bool) private wrappers;\n\n\n\n\tconstructor() public {\n\n\t\twrappers[0x880A845A85F843a5c67DB2061623c6Fc3bB4c511] = true;\n\n\t\twrappers[0x4c9B55f2083629A1F7aDa257ae984E03096eCD25] = true;\n\n\t\twrappers[0x42A9237b872368E1bec4Ca8D26A928D7d39d338C] = true;\n\n\t}\n\n\n\n\tfunction addWrapper(address _wrapper) public onlyOwner {\n\n\t\twrappers[_wrapper] = true;\n\n\t}\n\n\n\n\tfunction removeWrapper(address _wrapper) public onlyOwner {\n\n\t\twrappers[_wrapper] = false;\n\n\t}\n\n\n\n\tfunction isWrapper(address _wrapper) public view returns(bool) {\n\n\t\treturn wrappers[_wrapper];\n\n\t}\n\n}\n\nabstract contract CEtherInterface {\n\n function mint() external virtual payable;\n\n function repayBorrow() external virtual payable;\n\n}\n\nabstract contract Cat {\n\n struct Ilk {\n\n address flip; // Liquidator\n\n uint256 chop; // Liquidation Penalty [ray]\n\n uint256 lump; // Liquidation Quantity [wad]\n\n }\n\n\n\n mapping (bytes32 => Ilk) public ilks;\n\n}\n\nabstract contract CompoundOracleInterface {\n\n function getUnderlyingPrice(address cToken) external view virtual returns (uint);\n\n}\n\nabstract contract ComptrollerInterface {\n\n function enterMarkets(address[] calldata cTokens) external virtual returns (uint256[] memory);\n\n\n\n function exitMarket(address cToken) external virtual returns (uint256);\n\n\n\n function getAssetsIn(address account) external virtual view returns (address[] memory);\n\n\n\n function markets(address account) public virtual view returns (bool, uint256);\n\n\n\n function getAccountLiquidity(address account) external virtual view returns (uint256, uint256, uint256);\n\n\n\n function claimComp(address holder) virtual public;\n\n\n\n function oracle() public virtual view returns (address);\n\n}\n\nabstract contract DSProxyInterface {\n\n\n\n /// Truffle wont compile if this isn't commented\n\n // function execute(bytes memory _code, bytes memory _data)\n\n // public virtual\n\n // payable\n\n // returns (address, bytes32);\n\n\n\n function execute(address _target, bytes memory _data) public virtual payable returns (bytes32);\n\n\n\n function setCache(address _cacheAddr) public virtual payable returns (bool);\n\n\n\n function owner() public virtual returns (address);\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint) public virtual;\n\n function transfer(address, uint) public virtual;\n\n function transferFrom(address, address, uint) public virtual;\n\n function deposit() public virtual payable;\n\n function withdraw(uint) public virtual;\n\n}\n\nabstract contract ManagerLike {\n\n function cdpCan(address, uint, address) public virtual view returns (uint);\n\n function ilks(uint) public virtual view returns (bytes32);\n\n function owns(uint) public virtual view returns (address);\n\n function urns(uint) public virtual view returns (address);\n\n function vat() public virtual view returns (address);\n\n function open(bytes32) public virtual returns (uint);\n\n function give(uint, address) public virtual;\n\n function cdpAllow(uint, address, uint) public virtual;\n\n function urnAllow(address, uint) public virtual;\n\n function frob(uint, int, int) public virtual;\n\n function frob(uint, address, int, int) public virtual;\n\n function flux(uint, address, uint) public virtual;\n\n function move(uint, address, uint) public virtual;\n\n function exit(address, uint, address, uint) public virtual;\n\n function quit(uint, address) public virtual;\n\n function enter(address, uint) public virtual;\n\n function shift(uint, uint) public virtual;\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) public virtual view returns (uint);\n\n function ilks(bytes32) public virtual view returns (uint, uint, uint, uint, uint);\n\n function dai(address) public virtual view returns (uint);\n\n function urns(bytes32, address) public virtual view returns (uint, uint);\n\n function frob(bytes32, address, address, address, int, int) public virtual;\n\n function hope(address) public virtual;\n\n function move(address, address, uint) public virtual;\n\n}\n\nabstract contract GemJoinLike {\n\n function dec() public virtual returns (uint);\n\n function gem() public virtual returns (GemLike);\n\n function join(address, uint) public virtual payable;\n\n function exit(address, uint) public virtual;\n\n}\n\nabstract contract GNTJoinLike {\n\n function bags(address) public virtual view returns (address);\n\n function make(address) public virtual returns (address);\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() public virtual returns (VatLike);\n\n function dai() public virtual returns (GemLike);\n\n function join(address, uint) public virtual payable;\n\n function exit(address, uint) public virtual;\n\n}\n\nabstract contract HopeLike {\n\n function hope(address) public virtual;\n\n function nope(address) public virtual;\n\n}\n\nabstract contract EndLike {\n\n function fix(bytes32) public virtual view returns (uint);\n\n function cash(bytes32, uint) public virtual;\n\n function free(bytes32) public virtual;\n\n function pack(uint) public virtual;\n\n function skim(bytes32, address) public virtual;\n\n}\n\nabstract contract JugLike {\n\n function drip(bytes32) public virtual;\n\n}\n\nabstract contract PotLike {\n\n function chi() public virtual view returns (uint);\n\n function pie(address) public virtual view returns (uint);\n\n function drip() public virtual;\n\n function join(uint) public virtual;\n\n function exit(uint) public virtual;\n\n}\n\nabstract contract ProxyRegistryLike {\n\n function proxies(address) public virtual view returns (address);\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract ProxyLike {\n\n function owner() public virtual view returns (address);\n\n}\n\nabstract contract DssProxyActions {\n\n function daiJoin_join(address apt, address urn, uint wad) public virtual;\n\n function transfer(address gem, address dst, uint wad) public virtual;\n\n function ethJoin_join(address apt, address urn) public virtual payable;\n\n function gemJoin_join(address apt, address urn, uint wad, bool transferFrom) public virtual payable;\n\n\n\n function hope(address obj, address usr) public virtual;\n\n function nope(address obj, address usr) public virtual;\n\n\n\n function open(address manager, bytes32 ilk, address usr) public virtual returns (uint cdp);\n\n function give(address manager, uint cdp, address usr) public virtual;\n\n function giveToProxy(address proxyRegistry, address manager, uint cdp, address dst) public virtual;\n\n\n\n function cdpAllow(address manager, uint cdp, address usr, uint ok) public virtual;\n\n function urnAllow(address manager, address usr, uint ok) public virtual;\n\n function flux(address manager, uint cdp, address dst, uint wad) public virtual;\n\n function move(address manager, uint cdp, address dst, uint rad) public virtual;\n\n function frob(address manager, uint cdp, int dink, int dart) public virtual;\n\n function frob(address manager, uint cdp, address dst, int dink, int dart) public virtual;\n\n function quit(address manager, uint cdp, address dst) public virtual;\n\n function enter(address manager, address src, uint cdp) public virtual;\n\n function shift(address manager, uint cdpSrc, uint cdpOrg) public virtual;\n\n function makeGemBag(address gemJoin) public virtual returns (address bag);\n\n\n\n function lockETH(address manager, address ethJoin, uint cdp) public virtual payable;\n\n function safeLockETH(address manager, address ethJoin, uint cdp, address owner) public virtual payable;\n\n function lockGem(address manager, address gemJoin, uint cdp, uint wad, bool transferFrom) public virtual;\n\n function safeLockGem(address manager, address gemJoin, uint cdp, uint wad, bool transferFrom, address owner) public virtual;\n\n function freeETH(address manager, address ethJoin, uint cdp, uint wad) public virtual;\n\n function freeGem(address manager, address gemJoin, uint cdp, uint wad) public virtual;\n\n function draw(address manager, address jug, address daiJoin, uint cdp, uint wad) public virtual;\n\n\n\n function wipe(address manager, address daiJoin, uint cdp, uint wad) public virtual;\n\n function safeWipe(address manager, address daiJoin, uint cdp, uint wad, address owner) public virtual;\n\n function wipeAll(address manager, address daiJoin, uint cdp) public virtual;\n\n function safeWipeAll(address manager, address daiJoin, uint cdp, address owner) public virtual;\n\n function lockETHAndDraw(address manager, address jug, address ethJoin, address daiJoin, uint cdp, uint wadD) public virtual payable;\n\n function openLockETHAndDraw(address manager, address jug, address ethJoin, address daiJoin, bytes32 ilk, uint wadD) public virtual payable returns (uint cdp);\n\n function lockGemAndDraw(address manager, address jug, address gemJoin, address daiJoin, uint cdp, uint wadC, uint wadD, bool transferFrom) public virtual;\n\n function openLockGemAndDraw(address manager, address jug, address gemJoin, address daiJoin, bytes32 ilk, uint wadC, uint wadD, bool transferFrom) public virtual returns (uint cdp);\n\n\n\n function openLockGNTAndDraw(address manager, address jug, address gntJoin, address daiJoin, bytes32 ilk, uint wadC, uint wadD) public virtual returns (address bag, uint cdp);\n\n function wipeAndFreeETH(address manager, address ethJoin, address daiJoin, uint cdp, uint wadC, uint wadD) public virtual;\n\n function wipeAllAndFreeETH(address manager, address ethJoin, address daiJoin, uint cdp, uint wadC) public virtual;\n\n function wipeAndFreeGem(address manager, address gemJoin, address daiJoin, uint cdp, uint wadC, uint wadD) public virtual;\n\n function wipeAllAndFreeGem(address manager, address gemJoin, address daiJoin, uint cdp, uint wadC) public virtual;\n\n}\n\nabstract contract DaiJoin {\n\n function vat() public virtual returns (Vat);\n\n function dai() public virtual returns (Gem);\n\n function join(address, uint) public virtual payable;\n\n function exit(address, uint) public virtual;\n\n}\n\nabstract contract DssProxyActionsDsr {\n\n function join(address daiJoin, address pot, uint wad) virtual public;\n\n function exit(address daiJoin, address pot, uint wad) virtual public;\n\n function exitAll(address daiJoin, address pot) virtual public;\n\n}\n\ninterface ERC20 {\n\n function totalSupply() external view returns (uint256 supply);\n\n\n\n function balanceOf(address _owner) external view returns (uint256 balance);\n\n\n\n function transfer(address _to, uint256 _value) external returns (bool success);\n\n\n\n function transferFrom(address _from, address _to, uint256 _value)\n\n external\n\n returns (bool success);\n\n\n\n function approve(address _spender, uint256 _value) external returns (bool success);\n\n\n\n function allowance(address _owner, address _spender) external view returns (uint256 remaining);\n\n\n\n function decimals() external view returns (uint256 digits);\n\n\n\n event Approval(address indexed _owner, address indexed _spender, uint256 _value);\n\n}\n\ninterface ExchangeInterface {\n\n function swapEtherToToken(uint256 _ethAmount, address _tokenAddress, uint256 _maxAmount)\n\n external\n\n payable\n\n returns (uint256, uint256);\n\n\n\n function swapTokenToEther(address _tokenAddress, uint256 _amount, uint256 _maxAmount)\n\n external\n\n returns (uint256);\n\n\n\n function swapTokenToToken(address _src, address _dest, uint256 _amount)\n\n external\n\n payable\n\n returns (uint256);\n\n\n\n function getExpectedRate(address src, address dest, uint256 srcQty)\n\n external\n\n view\n\n returns (uint256 expectedRate);\n\n}\n\ninterface ExchangeInterfaceV2 {\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable returns (uint);\n\n\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external payable returns(uint);\n\n\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) external view returns (uint);\n\n\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _srcAmount) external view returns (uint);\n\n}\n\nabstract contract Faucet {\n\n function gulp(address) public virtual;\n\n}\n\nabstract contract Flipper {\n\n function bids(uint _bidId) public virtual returns (uint256, uint256, address, uint48, uint48, address, address, uint256);\n\n function tend(uint id, uint lot, uint bid) virtual external;\n\n function dent(uint id, uint lot, uint bid) virtual external;\n\n function deal(uint id) virtual external;\n\n}\n\nabstract contract GasTokenInterface is ERC20 {\n\n function free(uint256 value) public virtual returns (bool success);\n\n\n\n function freeUpTo(uint256 value) public virtual returns (uint256 freed);\n\n\n\n function freeFrom(address from, uint256 value) public virtual returns (bool success);\n\n\n\n function freeFromUpTo(address from, uint256 value) public virtual returns (uint256 freed);\n\n}\n\nabstract contract Gem {\n\n function dec() virtual public returns (uint);\n\n function gem() virtual public returns (Gem);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n\n\n function approve(address, uint) virtual public;\n\n function transfer(address, uint) virtual public returns (bool);\n\n function transferFrom(address, address, uint) virtual public returns (bool);\n\n function deposit() virtual public payable;\n\n function withdraw(uint) virtual public;\n\n function allowance(address, address) virtual public returns (uint);\n\n}\n\nabstract contract GetCdps {\n\n function getCdpsAsc(address manager, address guy) external view virtual returns (uint[] memory ids, address[] memory urns, bytes32[] memory ilks);\n\n function getCdpsDesc(address manager, address guy) external view virtual returns (uint[] memory ids, address[] memory urns, bytes32[] memory ilks);\n\n}\n\nabstract contract IAToken {\n\n function redeem(uint256 _amount) external virtual;\n\n}\n\nabstract contract IAaveSubscription {\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) public virtual;\n\n function unsubscribe() public virtual;\n\n}\n\nabstract contract ICompoundSubscription {\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) public virtual;\n\n function unsubscribe() public virtual;\n\n}\n\nabstract contract ILendingPool {\n\n function flashLoan( address payable _receiver, address _reserve, uint _amount, bytes calldata _params) external virtual;\n\n function deposit(address _reserve, uint256 _amount, uint16 _referralCode) external virtual payable;\n\n\tfunction setUserUseReserveAsCollateral(address _reserve, bool _useAsCollateral) external virtual;\n\n\tfunction borrow(address _reserve, uint256 _amount, uint256 _interestRateMode, uint16 _referralCode) external virtual;\n\n\tfunction repay( address _reserve, uint256 _amount, address payable _onBehalfOf) external virtual payable;\n\n\tfunction swapBorrowRateMode(address _reserve) external virtual;\n\n function getReserves() external virtual view returns(address[] memory);\n\n\n\n /// @param _reserve underlying token address\n\n function getReserveData(address _reserve)\n\n external virtual\n\n view\n\n returns (\n\n uint256 totalLiquidity, // reserve total liquidity\n\n uint256 availableLiquidity, // reserve available liquidity for borrowing\n\n uint256 totalBorrowsStable, // total amount of outstanding borrows at Stable rate\n\n uint256 totalBorrowsVariable, // total amount of outstanding borrows at Variable rate\n\n uint256 liquidityRate, // current deposit APY of the reserve for depositors, in Ray units.\n\n uint256 variableBorrowRate, // current variable rate APY of the reserve pool, in Ray units.\n\n uint256 stableBorrowRate, // current stable rate APY of the reserve pool, in Ray units.\n\n uint256 averageStableBorrowRate, // current average stable borrow rate\n\n uint256 utilizationRate, // expressed as total borrows/total liquidity.\n\n uint256 liquidityIndex, // cumulative liquidity index\n\n uint256 variableBorrowIndex, // cumulative variable borrow index\n\n address aTokenAddress, // aTokens contract address for the specific _reserve\n\n uint40 lastUpdateTimestamp // timestamp of the last update of reserve data\n\n );\n\n\n\n /// @param _user users address\n\n function getUserAccountData(address _user)\n\n external virtual\n\n view\n\n returns (\n\n uint256 totalLiquidityETH, // user aggregated deposits across all the reserves. In Wei\n\n uint256 totalCollateralETH, // user aggregated collateral across all the reserves. In Wei\n\n uint256 totalBorrowsETH, // user aggregated outstanding borrows across all the reserves. In Wei\n\n uint256 totalFeesETH, // user aggregated current outstanding fees in ETH. In Wei\n\n uint256 availableBorrowsETH, // user available amount to borrow in ETH\n\n uint256 currentLiquidationThreshold, // user current average liquidation threshold across all the collaterals deposited\n\n uint256 ltv, // user average Loan-to-Value between all the collaterals\n\n uint256 healthFactor // user current Health Factor\n\n ); \n\n\n\n /// @param _reserve underlying token address\n\n /// @param _user users address\n\n function getUserReserveData(address _reserve, address _user)\n\n external virtual\n\n view\n\n returns (\n\n uint256 currentATokenBalance, // user current reserve aToken balance\n\n uint256 currentBorrowBalance, // user current reserve outstanding borrow balance\n\n uint256 principalBorrowBalance, // user balance of borrowed asset\n\n uint256 borrowRateMode, // user borrow rate mode either Stable or Variable\n\n uint256 borrowRate, // user current borrow rate APY\n\n uint256 liquidityRate, // user current earn rate on _reserve\n\n uint256 originationFee, // user outstanding loan origination fee\n\n uint256 variableBorrowIndex, // user variable cumulative index\n\n uint256 lastUpdateTimestamp, // Timestamp of the last data update\n\n bool usageAsCollateralEnabled // Whether the user's current reserve is enabled as a collateral\n\n );\n\n\n\n function getReserveConfigurationData(address _reserve)\n\n external virtual\n\n view\n\n returns (\n\n uint256 ltv,\n\n uint256 liquidationThreshold,\n\n uint256 liquidationBonus,\n\n address rateStrategyAddress,\n\n bool usageAsCollateralEnabled,\n\n bool borrowingEnabled,\n\n bool stableBorrowRateEnabled,\n\n bool isActive\n\n );\n\n\n\n // ------------------ LendingPoolCoreData ------------------------\n\n function getReserveATokenAddress(address _reserve) public virtual view returns (address);\n\n function getReserveConfiguration(address _reserve)\n\n external virtual\n\n view\n\n returns (uint256, uint256, uint256, bool);\n\n function getUserUnderlyingAssetBalance(address _reserve, address _user)\n\n public virtual\n\n view\n\n returns (uint256);\n\n\n\n function getReserveCurrentLiquidityRate(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveCurrentVariableBorrowRate(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveTotalLiquidity(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveAvailableLiquidity(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveTotalBorrowsVariable(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n\n\n // ---------------- LendingPoolDataProvider ---------------------\n\n function calculateUserGlobalData(address _user)\n\n public virtual\n\n view\n\n returns (\n\n uint256 totalLiquidityBalanceETH,\n\n uint256 totalCollateralBalanceETH,\n\n uint256 totalBorrowBalanceETH,\n\n uint256 totalFeesETH,\n\n uint256 currentLtv,\n\n uint256 currentLiquidationThreshold,\n\n uint256 healthFactor,\n\n bool healthFactorBelowThreshold\n\n );\n\n}\n\nabstract contract ILendingPoolAddressesProvider {\n\n\n\n function getLendingPool() public virtual view returns (address);\n\n function getLendingPoolCore() public virtual view returns (address payable);\n\n function getLendingPoolConfigurator() public virtual view returns (address);\n\n function getLendingPoolDataProvider() public virtual view returns (address);\n\n function getLendingPoolParametersProvider() public virtual view returns (address);\n\n function getTokenDistributor() public virtual view returns (address);\n\n function getFeeProvider() public virtual view returns (address);\n\n function getLendingPoolLiquidationManager() public virtual view returns (address);\n\n function getLendingPoolManager() public virtual view returns (address);\n\n function getPriceOracle() public virtual view returns (address);\n\n function getLendingRateOracle() public virtual view returns (address);\n\n}\n\nabstract contract ILoanShifter {\n\n function getLoanAmount(uint, address) public virtual returns (uint);\n\n function getUnderlyingAsset(address _addr) public view virtual returns (address);\n\n}\n\nabstract contract IPriceOracleGetterAave {\n\n function getAssetPrice(address _asset) external virtual view returns (uint256);\n\n function getAssetsPrices(address[] calldata _assets) external virtual view returns(uint256[] memory);\n\n function getSourceOfAsset(address _asset) external virtual view returns(address);\n\n function getFallbackOracle() external virtual view returns(address);\n\n}\n\nabstract contract ITokenInterface is ERC20 {\n\n function assetBalanceOf(address _owner) public virtual view returns (uint256);\n\n\n\n function mint(address receiver, uint256 depositAmount) external virtual returns (uint256 mintAmount);\n\n\n\n function burn(address receiver, uint256 burnAmount) external virtual returns (uint256 loanAmountPaid);\n\n\n\n function tokenPrice() public virtual view returns (uint256 price);\n\n}\n\nabstract contract Join {\n\n bytes32 public ilk;\n\n\n\n function dec() virtual public view returns (uint);\n\n function gem() virtual public view returns (Gem);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\nabstract contract Jug {\n\n struct Ilk {\n\n uint256 duty;\n\n uint256 rho;\n\n }\n\n\n\n mapping (bytes32 => Ilk) public ilks;\n\n\n\n function drip(bytes32) public virtual returns (uint);\n\n}\n\nabstract contract KyberNetworkProxyInterface {\n\n function maxGasPrice() external virtual view returns (uint256);\n\n\n\n function getUserCapInWei(address user) external virtual view returns (uint256);\n\n\n\n function getUserCapInTokenWei(address user, ERC20 token) external virtual view returns (uint256);\n\n\n\n function enabled() external virtual view returns (bool);\n\n\n\n function info(bytes32 id) external virtual view returns (uint256);\n\n\n\n function getExpectedRate(ERC20 src, ERC20 dest, uint256 srcQty)\n\n public virtual\n\n view\n\n returns (uint256 expectedRate, uint256 slippageRate);\n\n\n\n function tradeWithHint(\n\n ERC20 src,\n\n uint256 srcAmount,\n\n ERC20 dest,\n\n address destAddress,\n\n uint256 maxDestAmount,\n\n uint256 minConversionRate,\n\n address walletId,\n\n bytes memory hint\n\n ) public virtual payable returns (uint256);\n\n\n\n function trade(\n\n ERC20 src,\n\n uint256 srcAmount,\n\n ERC20 dest,\n\n address destAddress,\n\n uint256 maxDestAmount,\n\n uint256 minConversionRate,\n\n address walletId\n\n ) public virtual payable returns (uint256);\n\n\n\n function swapEtherToToken(ERC20 token, uint256 minConversionRate)\n\n external virtual\n\n payable\n\n returns (uint256);\n\n\n\n function swapTokenToEther(ERC20 token, uint256 tokenQty, uint256 minRate)\n\n external virtual\n\n payable\n\n returns (uint256);\n\n\n\n function swapTokenToToken(ERC20 src, uint256 srcAmount, ERC20 dest, uint256 minConversionRate)\n\n public virtual\n\n returns (uint256);\n\n}\n\nabstract contract Manager {\n\n function last(address) virtual public returns (uint);\n\n function cdpCan(address, uint, address) virtual public view returns (uint);\n\n function ilks(uint) virtual public view returns (bytes32);\n\n function owns(uint) virtual public view returns (address);\n\n function urns(uint) virtual public view returns (address);\n\n function vat() virtual public view returns (address);\n\n function open(bytes32, address) virtual public returns (uint);\n\n function give(uint, address) virtual public;\n\n function cdpAllow(uint, address, uint) virtual public;\n\n function urnAllow(address, uint) virtual public;\n\n function frob(uint, int, int) virtual public;\n\n function flux(uint, address, uint) virtual public;\n\n function move(uint, address, uint) virtual public;\n\n function exit(address, uint, address, uint) virtual public;\n\n function quit(uint, address) virtual public;\n\n function enter(address, uint) virtual public;\n\n function shift(uint, uint) virtual public;\n\n}\n\nabstract contract OasisInterface {\n\n function getBuyAmount(address tokenToBuy, address tokenToPay, uint256 amountToPay)\n\n external\n\n virtual\n\n view\n\n returns (uint256 amountBought);\n\n\n\n function getPayAmount(address tokenToPay, address tokenToBuy, uint256 amountToBuy)\n\n public virtual\n\n view\n\n returns (uint256 amountPaid);\n\n\n\n function sellAllAmount(address pay_gem, uint256 pay_amt, address buy_gem, uint256 min_fill_amount)\n\n public virtual\n\n returns (uint256 fill_amt);\n\n\n\n function buyAllAmount(address buy_gem, uint256 buy_amt, address pay_gem, uint256 max_fill_amount)\n\n public virtual\n\n returns (uint256 fill_amt);\n\n}\n\nabstract contract Osm {\n\n mapping(address => uint256) public bud;\n\n\n\n function peep() external view virtual returns (bytes32, bool);\n\n}\n\nabstract contract OsmMom {\n\n mapping (bytes32 => address) public osms;\n\n}\n\nabstract contract OtcInterface {\n\n function buyAllAmount(address, uint256, address, uint256) public virtual returns (uint256);\n\n\n\n function getPayAmount(address, address, uint256) public virtual view returns (uint256);\n\n\n\n function getBuyAmount(address, address, uint256) public virtual view returns (uint256);\n\n}\n\nabstract contract PipInterface {\n\n function read() public virtual returns (bytes32);\n\n}\n\nabstract contract ProxyRegistryInterface {\n\n function proxies(address _owner) public virtual view returns (address);\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract SaverExchangeInterface {\n\n function getBestPrice(\n\n uint256 _amount,\n\n address _srcToken,\n\n address _destToken,\n\n uint256 _exchangeType\n\n ) public view virtual returns (address, uint256);\n\n}\n\nabstract contract Spotter {\n\n struct Ilk {\n\n PipInterface pip;\n\n uint256 mat;\n\n }\n\n\n\n mapping (bytes32 => Ilk) public ilks;\n\n\n\n uint256 public par;\n\n\n\n}\n\nabstract contract TokenInterface {\n\n function allowance(address, address) public virtual returns (uint256);\n\n\n\n function balanceOf(address) public virtual returns (uint256);\n\n\n\n function approve(address, uint256) public virtual;\n\n\n\n function transfer(address, uint256) public virtual returns (bool);\n\n\n\n function transferFrom(address, address, uint256) public virtual returns (bool);\n\n\n\n function deposit() public virtual payable;\n\n\n\n function withdraw(uint256) public virtual;\n\n}\n\nabstract contract UniswapExchangeInterface {\n\n function getEthToTokenInputPrice(uint256 eth_sold)\n\n external virtual\n\n view\n\n returns (uint256 tokens_bought);\n\n\n\n function getEthToTokenOutputPrice(uint256 tokens_bought)\n\n external virtual\n\n view\n\n returns (uint256 eth_sold);\n\n\n\n function getTokenToEthInputPrice(uint256 tokens_sold)\n\n external virtual\n\n view\n\n returns (uint256 eth_bought);\n\n\n\n function getTokenToEthOutputPrice(uint256 eth_bought)\n\n external virtual\n\n view\n\n returns (uint256 tokens_sold);\n\n\n\n function tokenToEthTransferInput(\n\n uint256 tokens_sold,\n\n uint256 min_eth,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual returns (uint256 eth_bought);\n\n\n\n function ethToTokenTransferInput(uint256 min_tokens, uint256 deadline, address recipient)\n\n external virtual\n\n payable\n\n returns (uint256 tokens_bought);\n\n\n\n function tokenToTokenTransferInput(\n\n uint256 tokens_sold,\n\n uint256 min_tokens_bought,\n\n uint256 min_eth_bought,\n\n uint256 deadline,\n\n address recipient,\n\n address token_addr\n\n ) external virtual returns (uint256 tokens_bought);\n\n\n\n function ethToTokenTransferOutput(\n\n uint256 tokens_bought,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual payable returns (uint256 eth_sold);\n\n\n\n function tokenToEthTransferOutput(\n\n uint256 eth_bought,\n\n uint256 max_tokens,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual returns (uint256 tokens_sold);\n\n\n\n function tokenToTokenTransferOutput(\n\n uint256 tokens_bought,\n\n uint256 max_tokens_sold,\n\n uint256 max_eth_sold,\n\n uint256 deadline,\n\n address recipient,\n\n address token_addr\n\n ) external virtual returns (uint256 tokens_sold);\n\n\n\n}\n\nabstract contract UniswapFactoryInterface {\n\n function getExchange(address token) external view virtual returns (address exchange);\n\n}\n\nabstract contract UniswapRouterInterface {\n\n function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)\n\n external\n\n virtual\n\n returns (uint[] memory amounts);\n\n\n\n function swapExactTokensForTokens(\n\n uint amountIn,\n\n uint amountOutMin,\n\n address[] calldata path,\n\n address to,\n\n uint deadline\n\n ) external virtual returns (uint[] memory amounts);\n\n\n\n function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)\n\n external virtual\n\n returns (uint[] memory amounts);\n\n\n\n function swapTokensForExactTokens(\n\n uint amountOut,\n\n uint amountInMax,\n\n address[] calldata path,\n\n address to,\n\n uint deadline\n\n ) external virtual returns (uint[] memory amounts);\n\n\n\n function getAmountsOut(uint amountIn, address[] memory path) public virtual view returns (uint[] memory amounts);\n\n\n\n function getAmountsIn(uint amountOut, address[] memory path) public virtual view returns (uint[] memory amounts);\n\n}\n\nabstract contract Vat {\n\n\n\n struct Urn {\n\n uint256 ink; // Locked Collateral [wad]\n\n uint256 art; // Normalised Debt [wad]\n\n }\n\n\n\n struct Ilk {\n\n uint256 Art; // Total Normalised Debt [wad]\n\n uint256 rate; // Accumulated Rates [ray]\n\n uint256 spot; // Price with Safety Margin [ray]\n\n uint256 line; // Debt Ceiling [rad]\n\n uint256 dust; // Urn Debt Floor [rad]\n\n }\n\n\n\n mapping (bytes32 => mapping (address => Urn )) public urns;\n\n mapping (bytes32 => Ilk) public ilks;\n\n mapping (bytes32 => mapping (address => uint)) public gem; // [wad]\n\n\n\n function can(address, address) virtual public view returns (uint);\n\n function dai(address) virtual public view returns (uint);\n\n function frob(bytes32, address, address, address, int, int) virtual public;\n\n function hope(address) virtual public;\n\n function move(address, address, uint) virtual public;\n\n function fork(bytes32, address, address, int, int) virtual public;\n\n}\n\ncontract DefisaverLogger {\n\n event LogEvent(\n\n address indexed contractAddress,\n\n address indexed caller,\n\n string indexed logName,\n\n bytes data\n\n );\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function Log(address _contract, address _caller, string memory _logName, bytes memory _data)\n\n public\n\n {\n\n emit LogEvent(_contract, _caller, _logName, _data);\n\n }\n\n}\n\ncontract MCDMonitorProxyV2 is AdminAuth {\n\n\n\n uint public CHANGE_PERIOD;\n\n address public monitor;\n\n address public newMonitor;\n\n address public lastMonitor;\n\n uint public changeRequestedTimestamp;\n\n\n\n mapping(address => bool) public allowed;\n\n\n\n event MonitorChangeInitiated(address oldMonitor, address newMonitor);\n\n event MonitorChangeCanceled();\n\n event MonitorChangeFinished(address monitor);\n\n event MonitorChangeReverted(address monitor);\n\n\n\n // if someone who is allowed become malicious, owner can't be changed\n\n modifier onlyAllowed() {\n\n require(allowed[msg.sender] || msg.sender == owner);\n\n _;\n\n }\n\n\n\n modifier onlyMonitor() {\n\n require (msg.sender == monitor);\n\n _;\n\n }\n\n\n\n constructor(uint _changePeriod) public {\n\n CHANGE_PERIOD = _changePeriod * 1 days;\n\n }\n\n\n\n /// @notice Only monitor contract is able to call execute on users proxy\n\n /// @param _owner Address of cdp owner (users DSProxy address)\n\n /// @param _saverProxy Address of MCDSaverProxy\n\n /// @param _data Data to send to MCDSaverProxy\n\n function callExecute(address _owner, address _saverProxy, bytes memory _data) public payable onlyMonitor {\n\n // execute reverts if calling specific method fails\n\n DSProxyInterface(_owner).execute{value: msg.value}(_saverProxy, _data);\n\n\n\n // return if anything left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Allowed users are able to set Monitor contract without any waiting period first time\n\n /// @param _monitor Address of Monitor contract\n\n function setMonitor(address _monitor) public onlyAllowed {\n\n require(monitor == address(0));\n\n monitor = _monitor;\n\n }\n\n\n\n /// @notice Allowed users are able to start procedure for changing monitor\n\n /// @dev after CHANGE_PERIOD needs to call confirmNewMonitor to actually make a change\n\n /// @param _newMonitor address of new monitor\n\n function changeMonitor(address _newMonitor) public onlyAllowed {\n\n require(changeRequestedTimestamp == 0);\n\n\n\n changeRequestedTimestamp = now;\n\n lastMonitor = monitor;\n\n newMonitor = _newMonitor;\n\n\n\n emit MonitorChangeInitiated(lastMonitor, newMonitor);\n\n }\n\n\n\n /// @notice At any point allowed users are able to cancel monitor change\n\n function cancelMonitorChange() public onlyAllowed {\n\n require(changeRequestedTimestamp > 0);\n\n\n\n changeRequestedTimestamp = 0;\n\n newMonitor = address(0);\n\n\n\n emit MonitorChangeCanceled();\n\n }\n\n\n\n /// @notice Anyone is able to confirm new monitor after CHANGE_PERIOD if process is started\n\n function confirmNewMonitor() public onlyAllowed {\n\n require((changeRequestedTimestamp + CHANGE_PERIOD) < now);\n\n require(changeRequestedTimestamp != 0);\n\n require(newMonitor != address(0));\n\n\n\n monitor = newMonitor;\n\n newMonitor = address(0);\n\n changeRequestedTimestamp = 0;\n\n\n\n emit MonitorChangeFinished(monitor);\n\n }\n\n\n\n /// @notice Its possible to revert monitor to last used monitor\n\n function revertMonitor() public onlyAllowed {\n\n require(lastMonitor != address(0));\n\n\n\n monitor = lastMonitor;\n\n\n\n emit MonitorChangeReverted(monitor);\n\n }\n\n\n\n\n\n /// @notice Allowed users are able to add new allowed user\n\n /// @param _user Address of user that will be allowed\n\n function addAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = true;\n\n }\n\n\n\n /// @notice Allowed users are able to remove allowed user\n\n /// @dev owner is always allowed even if someone tries to remove it from allowed mapping\n\n /// @param _user Address of allowed user\n\n function removeAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = false;\n\n }\n\n\n\n function setChangePeriod(uint _periodInDays) public onlyAllowed {\n\n require(_periodInDays * 1 days > CHANGE_PERIOD);\n\n\n\n CHANGE_PERIOD = _periodInDays * 1 days;\n\n }\n\n\n\n}\n\ncontract MCDPriceVerifier is AdminAuth {\n\n\n\n OsmMom public osmMom = OsmMom(0x76416A4d5190d071bfed309861527431304aA14f);\n\n Manager public manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n mapping(address => bool) public authorized;\n\n\n\n function verifyVaultNextPrice(uint _nextPrice, uint _cdpId) public view returns(bool) {\n\n require(authorized[msg.sender]);\n\n\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n return verifyNextPrice(_nextPrice, ilk);\n\n }\n\n\n\n function verifyNextPrice(uint _nextPrice, bytes32 _ilk) public view returns(bool) {\n\n require(authorized[msg.sender]);\n\n\n\n address osmAddress = osmMom.osms(_ilk);\n\n\n\n uint whitelisted = Osm(osmAddress).bud(address(this));\n\n // If contracts doesn't have access return true\n\n if (whitelisted != 1) return true;\n\n\n\n (bytes32 price, bool has) = Osm(osmAddress).peep();\n\n\n\n return has ? uint(price) == _nextPrice : false;\n\n }\n\n\n\n function setAuthorized(address _address, bool _allowed) public onlyOwner {\n\n authorized[_address] = _allowed;\n\n }\n\n}\n\nabstract contract StaticV2 {\n\n\n\n enum Method { Boost, Repay }\n\n\n\n struct CdpHolder {\n\n uint128 minRatio;\n\n uint128 maxRatio;\n\n uint128 optimalRatioBoost;\n\n uint128 optimalRatioRepay;\n\n address owner;\n\n uint cdpId;\n\n bool boostEnabled;\n\n bool nextPriceEnabled;\n\n }\n\n\n\n struct SubPosition {\n\n uint arrPos;\n\n bool subscribed;\n\n }\n\n}\n\ncontract SubscriptionsInterfaceV2 {\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled, bool _nextPriceEnabled) external {}\n\n function unsubscribe(uint _cdpId) external {}\n\n}\n\ncontract SubscriptionsProxyV2 {\n\n\n\n address public constant MONITOR_PROXY_ADDRESS = 0x7456f4218874eAe1aF8B83a64848A1B89fEB7d7C;\n\n address public constant OLD_SUBSCRIPTION = 0x83152CAA0d344a2Fd428769529e2d490A88f4393;\n\n address public constant FACTORY_ADDRESS = 0x5a15566417e6C1c9546523066500bDDBc53F88C7;\n\n\n\n function migrate(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(OLD_SUBSCRIPTION).unsubscribe(_cdpId);\n\n\n\n subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled, _subscriptions);\n\n }\n\n\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n\n\n address currAuthority = address(DSAuth(address(this)).authority());\n\n DSGuard guard = DSGuard(currAuthority);\n\n\n\n if (currAuthority == address(0)) {\n\n guard = DSGuardFactory(FACTORY_ADDRESS).newGuard();\n\n DSAuth(address(this)).setAuthority(DSAuthority(address(guard)));\n\n }\n\n\n\n guard.permit(MONITOR_PROXY_ADDRESS, address(this), bytes4(keccak256(\"execute(address,bytes)\")));\n\n\n\n SubscriptionsInterfaceV2(_subscriptions).subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled);\n\n }\n\n\n\n function update(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(_subscriptions).subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled);\n\n }\n\n\n\n function unsubscribe(uint _cdpId, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(_subscriptions).unsubscribe(_cdpId);\n\n }\n\n}\n\ncontract SubscriptionsV2 is AdminAuth, StaticV2 {\n\n\n\n bytes32 internal constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n bytes32 internal constant BAT_ILK = 0x4241542d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n\n\n CdpHolder[] public subscribers;\n\n mapping (uint => SubPosition) public subscribersPos;\n\n\n\n mapping (bytes32 => uint) public minLimits;\n\n\n\n uint public changeIndex;\n\n\n\n Manager public manager = Manager(MANAGER_ADDRESS);\n\n Vat public vat = Vat(VAT_ADDRESS);\n\n Spotter public spotter = Spotter(SPOTTER_ADDRESS);\n\n MCDSaverProxy public saverProxy;\n\n\n\n event Subscribed(address indexed owner, uint cdpId);\n\n event Unsubscribed(address indexed owner, uint cdpId);\n\n event Updated(address indexed owner, uint cdpId);\n\n event ParamUpdates(address indexed owner, uint cdpId, uint128, uint128, uint128, uint128, bool boostEnabled);\n\n\n\n /// @param _saverProxy Address of the MCDSaverProxy contract\n\n constructor(address _saverProxy) public {\n\n saverProxy = MCDSaverProxy(payable(_saverProxy));\n\n\n\n minLimits[ETH_ILK] = 1700000000000000000;\n\n minLimits[BAT_ILK] = 1700000000000000000;\n\n }\n\n\n\n /// @dev Called by the DSProxy contract which owns the CDP\n\n /// @notice Adds the users CDP in the list of subscriptions so it can be monitored\n\n /// @param _cdpId Id of the CDP\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalBoost Ratio amount which boost should target\n\n /// @param _optimalRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n /// @param _nextPriceEnabled Boolean determing if we can use nextPrice for this cdp\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled, bool _nextPriceEnabled) external {\n\n require(isOwner(msg.sender, _cdpId), \"Must be called by Cdp owner\");\n\n\n\n // if boost is not enabled, set max ratio to max uint\n\n uint128 localMaxRatio = _boostEnabled ? _maxRatio : uint128(-1);\n\n require(checkParams(manager.ilks(_cdpId), _minRatio, localMaxRatio), \"Must be correct params\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n CdpHolder memory subscription = CdpHolder({\n\n minRatio: _minRatio,\n\n maxRatio: localMaxRatio,\n\n optimalRatioBoost: _optimalBoost,\n\n optimalRatioRepay: _optimalRepay,\n\n owner: msg.sender,\n\n cdpId: _cdpId,\n\n boostEnabled: _boostEnabled,\n\n nextPriceEnabled: _nextPriceEnabled\n\n });\n\n\n\n changeIndex++;\n\n\n\n if (subInfo.subscribed) {\n\n subscribers[subInfo.arrPos] = subscription;\n\n\n\n emit Updated(msg.sender, _cdpId);\n\n emit ParamUpdates(msg.sender, _cdpId, _minRatio, localMaxRatio, _optimalBoost, _optimalRepay, _boostEnabled);\n\n } else {\n\n subscribers.push(subscription);\n\n\n\n subInfo.arrPos = subscribers.length - 1;\n\n subInfo.subscribed = true;\n\n\n\n emit Subscribed(msg.sender, _cdpId);\n\n }\n\n }\n\n\n\n /// @notice Called by the users DSProxy\n\n /// @dev Owner who subscribed cancels his subscription\n\n function unsubscribe(uint _cdpId) external {\n\n require(isOwner(msg.sender, _cdpId), \"Must be called by Cdp owner\");\n\n\n\n _unsubscribe(_cdpId);\n\n }\n\n\n\n /// @dev Checks if the _owner is the owner of the CDP\n\n function isOwner(address _owner, uint _cdpId) internal view returns (bool) {\n\n return getOwner(_cdpId) == _owner;\n\n }\n\n\n\n /// @dev Checks limit for minimum ratio and if minRatio is bigger than max\n\n function checkParams(bytes32 _ilk, uint128 _minRatio, uint128 _maxRatio) internal view returns (bool) {\n\n if (_minRatio < minLimits[_ilk]) {\n\n return false;\n\n }\n\n\n\n if (_minRatio > _maxRatio) {\n\n return false;\n\n }\n\n\n\n return true;\n\n }\n\n\n\n /// @dev Internal method to remove a subscriber from the list\n\n function _unsubscribe(uint _cdpId) internal {\n\n require(subscribers.length > 0, \"Must have subscribers in the list\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n require(subInfo.subscribed, \"Must first be subscribed\");\n\n\n\n uint lastCdpId = subscribers[subscribers.length - 1].cdpId;\n\n\n\n SubPosition storage subInfo2 = subscribersPos[lastCdpId];\n\n subInfo2.arrPos = subInfo.arrPos;\n\n\n\n subscribers[subInfo.arrPos] = subscribers[subscribers.length - 1];\n\n subscribers.pop();\n\n\n\n changeIndex++;\n\n subInfo.subscribed = false;\n\n subInfo.arrPos = 0;\n\n\n\n emit Unsubscribed(msg.sender, _cdpId);\n\n }\n\n\n\n /// @notice Returns an address that owns the CDP\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(uint _cdpId) public view returns(address) {\n\n return manager.owns(_cdpId);\n\n }\n\n\n\n /// @notice Helper method for the front to get all the info about the subscribed CDP\n\n function getSubscribedInfo(uint _cdpId) public view returns(bool, uint128, uint128, uint128, uint128, address, uint coll, uint debt) {\n\n SubPosition memory subInfo = subscribersPos[_cdpId];\n\n\n\n if (!subInfo.subscribed) return (false, 0, 0, 0, 0, address(0), 0, 0);\n\n\n\n (coll, debt) = saverProxy.getCdpInfo(manager, _cdpId, manager.ilks(_cdpId));\n\n\n\n CdpHolder memory subscriber = subscribers[subInfo.arrPos];\n\n\n\n return (\n\n true,\n\n subscriber.minRatio,\n\n subscriber.maxRatio,\n\n subscriber.optimalRatioRepay,\n\n subscriber.optimalRatioBoost,\n\n subscriber.owner,\n\n coll,\n\n debt\n\n );\n\n }\n\n\n\n function getCdpHolder(uint _cdpId) public view returns (bool subscribed, CdpHolder memory) {\n\n SubPosition memory subInfo = subscribersPos[_cdpId];\n\n\n\n if (!subInfo.subscribed) return (false, CdpHolder(0, 0, 0, 0, address(0), 0, false, false));\n\n\n\n CdpHolder memory subscriber = subscribers[subInfo.arrPos];\n\n\n\n return (true, subscriber);\n\n }\n\n\n\n /// @notice Helper method for the front to get the information about the ilk of a CDP\n\n function getIlkInfo(bytes32 _ilk, uint _cdpId) public view returns(bytes32 ilk, uint art, uint rate, uint spot, uint line, uint dust, uint mat, uint par) {\n\n // send either ilk or cdpId\n\n if (_ilk == bytes32(0)) {\n\n _ilk = manager.ilks(_cdpId);\n\n }\n\n\n\n ilk = _ilk;\n\n (,mat) = spotter.ilks(_ilk);\n\n par = spotter.par();\n\n (art, rate, spot, line, dust) = vat.ilks(_ilk);\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n function getSubscribers() public view returns (CdpHolder[] memory) {\n\n return subscribers;\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n function getSubscribersByPage(uint _page, uint _perPage) public view returns (CdpHolder[] memory) {\n\n CdpHolder[] memory holders = new CdpHolder[](_perPage);\n\n\n\n uint start = _page * _perPage;\n\n uint end = start + _perPage;\n\n\n\n uint count = 0;\n\n for (uint i=start; i<end; i++) {\n\n holders[count] = subscribers[i];\n\n count++;\n\n }\n\n\n\n return holders;\n\n }\n\n\n\n ////////////// ADMIN METHODS ///////////////////\n\n\n\n /// @notice Admin function to change a min. limit for an asset\n\n function changeMinRatios(bytes32 _ilk, uint _newRatio) public onlyOwner {\n\n minLimits[_ilk] = _newRatio;\n\n }\n\n\n\n /// @notice Admin function to unsubscribe a CDP\n\n function unsubscribeByAdmin(uint _cdpId) public onlyOwner {\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n if (subInfo.subscribed) {\n\n _unsubscribe(_cdpId);\n\n }\n\n }\n\n}\n\ncontract BidProxy {\n\n\n\n address public constant DAI_JOIN = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n function daiBid(uint _bidId, uint _amount, address _flipper) public {\n\n uint tendAmount = _amount * (10 ** 27);\n\n\n\n joinDai(_amount);\n\n\n\n (, uint lot, , , , , , ) = Flipper(_flipper).bids(_bidId);\n\n\n\n Vat(VAT_ADDRESS).hope(_flipper);\n\n\n\n Flipper(_flipper).tend(_bidId, lot, tendAmount);\n\n }\n\n\n\n function collateralBid(uint _bidId, uint _amount, address _flipper) public {\n\n (uint bid, , , , , , , ) = Flipper(_flipper).bids(_bidId);\n\n\n\n joinDai(bid / (10**27));\n\n\n\n Vat(VAT_ADDRESS).hope(_flipper);\n\n\n\n Flipper(_flipper).dent(_bidId, _amount, bid);\n\n }\n\n\n\n function closeBid(uint _bidId, address _flipper, address _joinAddr) public {\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n Flipper(_flipper).deal(_bidId);\n\n uint amount = Vat(VAT_ADDRESS).gem(ilk, address(this));\n\n\n\n Vat(VAT_ADDRESS).hope(_joinAddr);\n\n Gem(_joinAddr).exit(msg.sender, amount);\n\n }\n\n\n\n function exitCollateral(address _joinAddr) public {\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n uint amount = Vat(VAT_ADDRESS).gem(ilk, address(this));\n\n\n\n Vat(VAT_ADDRESS).hope(_joinAddr);\n\n Gem(_joinAddr).exit(msg.sender, amount);\n\n }\n\n\n\n function exitDai() public {\n\n uint amount = Vat(VAT_ADDRESS).dai(address(this)) / (10**27);\n\n\n\n Vat(VAT_ADDRESS).hope(DAI_JOIN);\n\n Gem(DAI_JOIN).exit(msg.sender, amount);\n\n }\n\n\n\n function withdrawToken(address _token) public {\n\n uint balance = ERC20(_token).balanceOf(address(this));\n\n ERC20(_token).transfer(msg.sender, balance);\n\n }\n\n\n\n function withdrawEth() public {\n\n uint balance = address(this).balance;\n\n msg.sender.transfer(balance);\n\n }\n\n\n\n function joinDai(uint _amount) internal {\n\n uint amountInVat = Vat(VAT_ADDRESS).dai(address(this)) / (10**27);\n\n\n\n if (_amount > amountInVat) {\n\n uint amountDiff = (_amount - amountInVat) + 1;\n\n\n\n ERC20(DAI_ADDRESS).transferFrom(msg.sender, address(this), amountDiff);\n\n ERC20(DAI_ADDRESS).approve(DAI_JOIN, amountDiff);\n\n Join(DAI_JOIN).join(address(this), amountDiff);\n\n }\n\n }\n\n}\n\nabstract contract IMCDSubscriptions {\n\n function unsubscribe(uint256 _cdpId) external virtual ;\n\n\n\n function subscribersPos(uint256 _cdpId) external virtual returns (uint256, bool);\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint256) public virtual;\n\n\n\n function transfer(address, uint256) public virtual;\n\n\n\n function transferFrom(address, address, uint256) public virtual;\n\n\n\n function deposit() public virtual payable;\n\n\n\n function withdraw(uint256) public virtual;\n\n}\n\nabstract contract ManagerLike {\n\n function cdpCan(address, uint256, address) public virtual view returns (uint256);\n\n\n\n function ilks(uint256) public virtual view returns (bytes32);\n\n\n\n function owns(uint256) public virtual view returns (address);\n\n\n\n function urns(uint256) public virtual view returns (address);\n\n\n\n function vat() public virtual view returns (address);\n\n\n\n function open(bytes32, address) public virtual returns (uint256);\n\n\n\n function give(uint256, address) public virtual;\n\n\n\n function cdpAllow(uint256, address, uint256) public virtual;\n\n\n\n function urnAllow(address, uint256) public virtual;\n\n\n\n function frob(uint256, int256, int256) public virtual;\n\n\n\n function flux(uint256, address, uint256) public virtual;\n\n\n\n function move(uint256, address, uint256) public virtual;\n\n\n\n function exit(address, uint256, address, uint256) public virtual;\n\n\n\n function quit(uint256, address) public virtual;\n\n\n\n function enter(address, uint256) public virtual;\n\n\n\n function shift(uint256, uint256) public virtual;\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) public virtual view returns (uint256);\n\n\n\n function ilks(bytes32) public virtual view returns (uint256, uint256, uint256, uint256, uint256);\n\n\n\n function dai(address) public virtual view returns (uint256);\n\n\n\n function urns(bytes32, address) public virtual view returns (uint256, uint256);\n\n\n\n function frob(bytes32, address, address, address, int256, int256) public virtual;\n\n\n\n function hope(address) public virtual;\n\n\n\n function move(address, address, uint256) public virtual;\n\n}\n\nabstract contract GemJoinLike {\n\n function dec() public virtual returns (uint256);\n\n\n\n function gem() public virtual returns (GemLike);\n\n\n\n function join(address, uint256) public virtual payable;\n\n\n\n function exit(address, uint256) public virtual;\n\n}\n\nabstract contract GNTJoinLike {\n\n function bags(address) public virtual view returns (address);\n\n\n\n function make(address) public virtual returns (address);\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() public virtual returns (VatLike);\n\n\n\n function dai() public virtual returns (GemLike);\n\n\n\n function join(address, uint256) public virtual payable;\n\n\n\n function exit(address, uint256) public virtual;\n\n}\n\nabstract contract HopeLike {\n\n function hope(address) public virtual;\n\n\n\n function nope(address) public virtual;\n\n}\n\nabstract contract ProxyRegistryInterface {\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract EndLike {\n\n function fix(bytes32) public virtual view returns (uint256);\n\n\n\n function cash(bytes32, uint256) public virtual;\n\n\n\n function free(bytes32) public virtual;\n\n\n\n function pack(uint256) public virtual;\n\n\n\n function skim(bytes32, address) public virtual;\n\n}\n\nabstract contract JugLike {\n\n function drip(bytes32) public virtual returns (uint256);\n\n}\n\nabstract contract PotLike {\n\n function pie(address) public virtual view returns (uint256);\n\n\n\n function drip() public virtual returns (uint256);\n\n\n\n function join(uint256) public virtual;\n\n\n\n function exit(uint256) public virtual;\n\n}\n\nabstract contract ProxyRegistryLike {\n\n function proxies(address) public virtual view returns (address);\n\n\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract ProxyLike {\n\n function owner() public virtual view returns (address);\n\n}\n\ncontract Common {\n\n uint256 constant RAY = 10**27;\n\n\n\n // Internal functions\n\n\n\n function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require(y == 0 || (z = x * y) / y == x, \"mul-overflow\");\n\n }\n\n\n\n // Public functions\n\n // solhint-disable-next-line func-name-mixedcase\n\n function daiJoin_join(address apt, address urn, uint256 wad) public {\n\n // Gets DAI from the user's wallet\n\n DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the DAI amount\n\n DaiJoinLike(apt).dai().approve(apt, wad);\n\n // Joins DAI into the vat\n\n DaiJoinLike(apt).join(urn, wad);\n\n }\n\n}\n\ncontract MCDCreateProxyActions is Common {\n\n // Internal functions\n\n\n\n function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require((z = x - y) <= x, \"sub-overflow\");\n\n }\n\n\n\n function toInt(uint256 x) internal pure returns (int256 y) {\n\n y = int256(x);\n\n require(y >= 0, \"int-overflow\");\n\n }\n\n\n\n function toRad(uint256 wad) internal pure returns (uint256 rad) {\n\n rad = mul(wad, 10**27);\n\n }\n\n\n\n function convertTo18(address gemJoin, uint256 amt) internal returns (uint256 wad) {\n\n // For those collaterals that have less than 18 decimals precision we need to do the conversion before passing to frob function\n\n // Adapters will automatically handle the difference of precision\n\n wad = mul(amt, 10**(18 - GemJoinLike(gemJoin).dec()));\n\n }\n\n\n\n function _getDrawDart(address vat, address jug, address urn, bytes32 ilk, uint256 wad)\n\n internal\n\n returns (int256 dart)\n\n {\n\n // Updates stability fee rate\n\n uint256 rate = JugLike(jug).drip(ilk);\n\n\n\n // Gets DAI balance of the urn in the vat\n\n uint256 dai = VatLike(vat).dai(urn);\n\n\n\n // If there was already enough DAI in the vat balance, just exits it without adding more debt\n\n if (dai < mul(wad, RAY)) {\n\n // Calculates the needed dart so together with the existing dai in the vat is enough to exit wad amount of DAI tokens\n\n dart = toInt(sub(mul(wad, RAY), dai) / rate);\n\n // This is neeeded due lack of precision. It might need to sum an extra dart wei (for the given DAI wad amount)\n\n dart = mul(uint256(dart), rate) < mul(wad, RAY) ? dart + 1 : dart;\n\n }\n\n }\n\n\n\n function _getWipeDart(address vat, uint256 dai, address urn, bytes32 ilk)\n\n internal\n\n view\n\n returns (int256 dart)\n\n {\n\n // Gets actual rate from the vat\n\n (, uint256 rate, , , ) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint256 art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Uses the whole dai balance in the vat to reduce the debt\n\n dart = toInt(dai / rate);\n\n // Checks the calculated dart is not higher than urn.art (total debt), otherwise uses its value\n\n dart = uint256(dart) <= art ? -dart : -toInt(art);\n\n }\n\n\n\n function _getWipeAllWad(address vat, address usr, address urn, bytes32 ilk)\n\n internal\n\n view\n\n returns (uint256 wad)\n\n {\n\n // Gets actual rate from the vat\n\n (, uint256 rate, , , ) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint256 art) = VatLike(vat).urns(ilk, urn);\n\n // Gets actual dai amount in the urn\n\n uint256 dai = VatLike(vat).dai(usr);\n\n\n\n uint256 rad = sub(mul(art, rate), dai);\n\n wad = rad / RAY;\n\n\n\n // If the rad precision has some dust, it will need to request for 1 extra wad wei\n\n wad = mul(wad, RAY) < rad ? wad + 1 : wad;\n\n }\n\n\n\n // Public functions\n\n\n\n function transfer(address gem, address dst, uint256 wad) public {\n\n GemLike(gem).transfer(dst, wad);\n\n }\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function ethJoin_join(address apt, address urn) public payable {\n\n // Wraps ETH in WETH\n\n GemJoinLike(apt).gem().deposit{value: msg.value}();\n\n // Approves adapter to take the WETH amount\n\n GemJoinLike(apt).gem().approve(address(apt), msg.value);\n\n // Joins WETH collateral into the vat\n\n GemJoinLike(apt).join(urn, msg.value);\n\n }\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function gemJoin_join(address apt, address urn, uint256 wad, bool transferFrom) public {\n\n // Only executes for tokens that have approval/transferFrom implementation\n\n if (transferFrom) {\n\n // Gets token from the user's wallet\n\n GemJoinLike(apt).gem().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the token amount\n\n GemJoinLike(apt).gem().approve(apt, 0);\n\n GemJoinLike(apt).gem().approve(apt, wad);\n\n }\n\n // Joins token collateral into the vat\n\n GemJoinLike(apt).join(urn, wad);\n\n }\n\n\n\n function hope(address obj, address usr) public {\n\n HopeLike(obj).hope(usr);\n\n }\n\n\n\n function nope(address obj, address usr) public {\n\n HopeLike(obj).nope(usr);\n\n }\n\n\n\n function open(address manager, bytes32 ilk, address usr) public returns (uint256 cdp) {\n\n cdp = ManagerLike(manager).open(ilk, usr);\n\n }\n\n\n\n function give(address manager, uint256 cdp, address usr) public {\n\n ManagerLike(manager).give(cdp, usr);\n\n }\n\n\n\n function move(address manager, uint256 cdp, address dst, uint256 rad) public {\n\n ManagerLike(manager).move(cdp, dst, rad);\n\n }\n\n\n\n function frob(address manager, uint256 cdp, int256 dink, int256 dart) public {\n\n ManagerLike(manager).frob(cdp, dink, dart);\n\n }\n\n\n\n function lockETH(address manager, address ethJoin, uint256 cdp) public payable {\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, address(this));\n\n // Locks WETH amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(msg.value),\n\n 0\n\n );\n\n }\n\n\n\n function lockGem(address manager, address gemJoin, uint256 cdp, uint256 wad, bool transferFrom)\n\n public\n\n {\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, address(this), wad, transferFrom);\n\n // Locks token amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(convertTo18(gemJoin, wad)),\n\n 0\n\n );\n\n }\n\n\n\n function draw(address manager, address jug, address daiJoin, uint256 cdp, uint256 wad) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Generates debt in the CDP\n\n frob(manager, cdp, 0, _getDrawDart(vat, jug, urn, ilk, wad));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wad));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wad);\n\n }\n\n\n\n function lockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n uint256 cdp,\n\n uint256 wadD\n\n ) public payable {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, urn);\n\n // Locks WETH amount into the CDP and generates debt\n\n frob(manager, cdp, toInt(msg.value), _getDrawDart(vat, jug, urn, ilk, wadD));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n }\n\n\n\n function openLockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint256 wadD,\n\n address owner\n\n ) public payable returns (uint256 cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockETHAndDraw(manager, jug, ethJoin, daiJoin, cdp, wadD);\n\n give(manager, cdp, owner);\n\n }\n\n\n\n function lockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n uint256 cdp,\n\n uint256 wadC,\n\n uint256 wadD,\n\n bool transferFrom\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, urn, wadC, transferFrom);\n\n // Locks token amount into the CDP and generates debt\n\n frob(\n\n manager,\n\n cdp,\n\n toInt(convertTo18(gemJoin, wadC)),\n\n _getDrawDart(vat, jug, urn, ilk, wadD)\n\n );\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n }\n\n\n\n function openLockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint256 wadC,\n\n uint256 wadD,\n\n bool transferFrom,\n\n address owner\n\n ) public returns (uint256 cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockGemAndDraw(manager, jug, gemJoin, daiJoin, cdp, wadC, wadD, transferFrom);\n\n give(manager, cdp, owner);\n\n }\n\n}\n\ncontract MCDCreateTaker {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant MCD_CREATE_FLASH_LOAN = 0x71eC9a4fCE561c3936a511D9ebb05B60CF2bA519;\n\n\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n address public constant ETH_JOIN_ADDRESS = 0x2F0b23f53734252Bda2277357e97e1517d6B042A;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n struct CreateData {\n\n uint collAmount;\n\n uint daiAmount;\n\n address joinAddr;\n\n }\n\n\n\n function openWithLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n CreateData memory _createData\n\n ) public payable {\n\n\n\n MCD_CREATE_FLASH_LOAN.transfer(msg.value); //0x fee\n\n\n\n\n\n if (_createData.joinAddr != ETH_JOIN_ADDRESS) {\n\n ERC20(getCollateralAddr(_createData.joinAddr)).safeTransferFrom(msg.sender, address(this), _createData.collAmount);\n\n ERC20(getCollateralAddr(_createData.joinAddr)).safeTransfer(MCD_CREATE_FLASH_LOAN, _createData.collAmount);\n\n }\n\n\n\n (uint[6] memory numData, address[5] memory addrData, bytes memory callData)\n\n = _packData(_createData, _exchangeData);\n\n bytes memory paramsData = abi.encode(numData, addrData, callData, address(this));\n\n\n\n lendingPool.flashLoan(MCD_CREATE_FLASH_LOAN, DAI_ADDRESS, _createData.daiAmount, paramsData);\n\n\n\n logger.Log(address(this), msg.sender, \"MCDCreate\", abi.encode(manager.last(address(this)), _createData.collAmount, _createData.daiAmount));\n\n }\n\n\n\n function getCollateralAddr(address _joinAddr) internal view returns (address) {\n\n return address(Join(_joinAddr).gem());\n\n }\n\n\n\n function _packData(\n\n CreateData memory _createData,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[6] memory numData, address[5] memory addrData, bytes memory callData) {\n\n\n\n numData = [\n\n _createData.collAmount,\n\n _createData.daiAmount,\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n addrData = [\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper,\n\n _createData.joinAddr\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint) virtual public;\n\n function transfer(address, uint) virtual public;\n\n function transferFrom(address, address, uint) virtual public;\n\n function deposit() virtual public payable;\n\n function withdraw(uint) virtual public;\n\n}\n\nabstract contract ManagerLike {\n\n function cdpCan(address, uint, address) virtual public view returns (uint);\n\n function ilks(uint) virtual public view returns (bytes32);\n\n function owns(uint) virtual public view returns (address);\n\n function urns(uint) virtual public view returns (address);\n\n function vat() virtual public view returns (address);\n\n function open(bytes32, address) virtual public returns (uint);\n\n function give(uint, address) virtual public;\n\n function cdpAllow(uint, address, uint) virtual public;\n\n function urnAllow(address, uint) virtual public;\n\n function frob(uint, int, int) virtual public;\n\n function flux(uint, address, uint) virtual public;\n\n function move(uint, address, uint) virtual public;\n\n function exit(address, uint, address, uint) virtual public;\n\n function quit(uint, address) virtual public;\n\n function enter(address, uint) virtual public;\n\n function shift(uint, uint) virtual public;\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) virtual public view returns (uint);\n\n function ilks(bytes32) virtual public view returns (uint, uint, uint, uint, uint);\n\n function dai(address) virtual public view returns (uint);\n\n function urns(bytes32, address) virtual public view returns (uint, uint);\n\n function frob(bytes32, address, address, address, int, int) virtual public;\n\n function hope(address) virtual public;\n\n function move(address, address, uint) virtual public;\n\n}\n\nabstract contract GemJoinLike {\n\n function dec() virtual public returns (uint);\n\n function gem() virtual public returns (GemLike);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\nabstract contract GNTJoinLike {\n\n function bags(address) virtual public view returns (address);\n\n function make(address) virtual public returns (address);\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() virtual public returns (VatLike);\n\n function dai() virtual public returns (GemLike);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\nabstract contract HopeLike {\n\n function hope(address) virtual public;\n\n function nope(address) virtual public;\n\n}\n\nabstract contract ProxyRegistryInterface {\n\n function proxies(address _owner) virtual public view returns (address);\n\n function build(address) virtual public returns (address);\n\n}\n\nabstract contract EndLike {\n\n function fix(bytes32) virtual public view returns (uint);\n\n function cash(bytes32, uint) virtual public;\n\n function free(bytes32) virtual public;\n\n function pack(uint) virtual public;\n\n function skim(bytes32, address) virtual public;\n\n}\n\nabstract contract JugLike {\n\n function drip(bytes32) virtual public returns (uint);\n\n}\n\nabstract contract PotLike {\n\n function pie(address) virtual public view returns (uint);\n\n function drip() virtual public returns (uint);\n\n function join(uint) virtual public;\n\n function exit(uint) virtual public;\n\n}\n\nabstract contract ProxyRegistryLike {\n\n function proxies(address) virtual public view returns (address);\n\n function build(address) virtual public returns (address);\n\n}\n\nabstract contract ProxyLike {\n\n function owner() virtual public view returns (address);\n\n}\n\nabstract contract DSProxy {\n\n function execute(address _target, bytes memory _data) virtual public payable returns (bytes32);\n\n function setOwner(address owner_) virtual public;\n\n}\n\ncontract Common {\n\n uint256 constant RAY = 10 ** 27;\n\n\n\n // Internal functions\n\n\n\n function mul(uint x, uint y) internal pure returns (uint z) {\n\n require(y == 0 || (z = x * y) / y == x, \"mul-overflow\");\n\n }\n\n\n\n // Public functions\n\n\n\n function daiJoin_join(address apt, address urn, uint wad) public {\n\n // Gets DAI from the user's wallet\n\n DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the DAI amount\n\n DaiJoinLike(apt).dai().approve(apt, wad);\n\n // Joins DAI into the vat\n\n DaiJoinLike(apt).join(urn, wad);\n\n }\n\n}\n\ncontract SaverProxyActions is Common {\n\n\n\n\n\n event CDPAction(string indexed, uint indexed, uint, uint);\n\n\n\n // Internal functions\n\n\n\n function sub(uint x, uint y) internal pure returns (uint z) {\n\n require((z = x - y) <= x, \"sub-overflow\");\n\n }\n\n\n\n function toInt(uint x) internal pure returns (int y) {\n\n y = int(x);\n\n require(y >= 0, \"int-overflow\");\n\n }\n\n\n\n function toRad(uint wad) internal pure returns (uint rad) {\n\n rad = mul(wad, 10 ** 27);\n\n }\n\n\n\n function convertTo18(address gemJoin, uint256 amt) internal returns (uint256 wad) {\n\n // For those collaterals that have less than 18 decimals precision we need to do the conversion before passing to frob function\n\n // Adapters will automatically handle the difference of precision\n\n wad = mul(\n\n amt,\n\n 10 ** (18 - GemJoinLike(gemJoin).dec())\n\n );\n\n }\n\n\n\n function _getDrawDart(\n\n address vat,\n\n address jug,\n\n address urn,\n\n bytes32 ilk,\n\n uint wad\n\n ) internal returns (int dart) {\n\n // Updates stability fee rate\n\n uint rate = JugLike(jug).drip(ilk);\n\n\n\n // Gets DAI balance of the urn in the vat\n\n uint dai = VatLike(vat).dai(urn);\n\n\n\n // If there was already enough DAI in the vat balance, just exits it without adding more debt\n\n if (dai < mul(wad, RAY)) {\n\n // Calculates the needed dart so together with the existing dai in the vat is enough to exit wad amount of DAI tokens\n\n dart = toInt(sub(mul(wad, RAY), dai) / rate);\n\n // This is neeeded due lack of precision. It might need to sum an extra dart wei (for the given DAI wad amount)\n\n dart = mul(uint(dart), rate) < mul(wad, RAY) ? dart + 1 : dart;\n\n }\n\n }\n\n\n\n function _getWipeDart(\n\n address vat,\n\n uint dai,\n\n address urn,\n\n bytes32 ilk\n\n ) internal view returns (int dart) {\n\n // Gets actual rate from the vat\n\n (, uint rate,,,) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Uses the whole dai balance in the vat to reduce the debt\n\n dart = toInt(dai / rate);\n\n // Checks the calculated dart is not higher than urn.art (total debt), otherwise uses its value\n\n dart = uint(dart) <= art ? - dart : - toInt(art);\n\n }\n\n\n\n function _getWipeAllWad(\n\n address vat,\n\n address usr,\n\n address urn,\n\n bytes32 ilk\n\n ) internal view returns (uint wad) {\n\n // Gets actual rate from the vat\n\n (, uint rate,,,) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n // Gets actual dai amount in the urn\n\n uint dai = VatLike(vat).dai(usr);\n\n\n\n uint rad = sub(mul(art, rate), dai);\n\n wad = rad / RAY;\n\n\n\n // If the rad precision has some dust, it will need to request for 1 extra wad wei\n\n wad = mul(wad, RAY) < rad ? wad + 1 : wad;\n\n }\n\n\n\n // Public functions\n\n\n\n function transfer(address gem, address dst, uint wad) public {\n\n GemLike(gem).transfer(dst, wad);\n\n }\n\n\n\n function ethJoin_join(address apt, address urn) public payable {\n\n // Wraps ETH in WETH\n\n GemJoinLike(apt).gem().deposit{value: msg.value}();\n\n // Approves adapter to take the WETH amount\n\n GemJoinLike(apt).gem().approve(address(apt), msg.value);\n\n // Joins WETH collateral into the vat\n\n GemJoinLike(apt).join(urn, msg.value);\n\n }\n\n\n\n function gemJoin_join(address apt, address urn, uint wad, bool transferFrom) public {\n\n // Only executes for tokens that have approval/transferFrom implementation\n\n if (transferFrom) {\n\n // Gets token from the user's wallet\n\n GemJoinLike(apt).gem().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the token amount\n\n GemJoinLike(apt).gem().approve(apt, 0);\n\n GemJoinLike(apt).gem().approve(apt, wad);\n\n }\n\n // Joins token collateral into the vat\n\n GemJoinLike(apt).join(urn, wad);\n\n }\n\n\n\n function hope(\n\n address obj,\n\n address usr\n\n ) public {\n\n HopeLike(obj).hope(usr);\n\n }\n\n\n\n function nope(\n\n address obj,\n\n address usr\n\n ) public {\n\n HopeLike(obj).nope(usr);\n\n }\n\n\n\n function open(\n\n address manager,\n\n bytes32 ilk,\n\n address usr\n\n ) public returns (uint cdp) {\n\n cdp = ManagerLike(manager).open(ilk, usr);\n\n }\n\n\n\n function give(\n\n address manager,\n\n uint cdp,\n\n address usr\n\n ) public {\n\n ManagerLike(manager).give(cdp, usr);\n\n\n\n emit CDPAction('give', cdp, 0, 0);\n\n }\n\n\n\n function giveToProxy(\n\n address proxyRegistry,\n\n address manager,\n\n uint cdp,\n\n address dst\n\n ) public {\n\n // Gets actual proxy address\n\n address proxy = ProxyRegistryLike(proxyRegistry).proxies(dst);\n\n // Checks if the proxy address already existed and dst address is still the owner\n\n if (proxy == address(0) || ProxyLike(proxy).owner() != dst) {\n\n uint csize;\n\n assembly {\n\n csize := extcodesize(dst)\n\n }\n\n // We want to avoid creating a proxy for a contract address that might not be able to handle proxies, then losing the CDP\n\n require(csize == 0, \"Dst-is-a-contract\");\n\n // Creates the proxy for the dst address\n\n proxy = ProxyRegistryLike(proxyRegistry).build(dst);\n\n }\n\n // Transfers CDP to the dst proxy\n\n give(manager, cdp, proxy);\n\n }\n\n\n\n function cdpAllow(\n\n address manager,\n\n uint cdp,\n\n address usr,\n\n uint ok\n\n ) public {\n\n ManagerLike(manager).cdpAllow(cdp, usr, ok);\n\n }\n\n\n\n function urnAllow(\n\n address manager,\n\n address usr,\n\n uint ok\n\n ) public {\n\n ManagerLike(manager).urnAllow(usr, ok);\n\n }\n\n\n\n function flux(\n\n address manager,\n\n uint cdp,\n\n address dst,\n\n uint wad\n\n ) public {\n\n ManagerLike(manager).flux(cdp, dst, wad);\n\n }\n\n\n\n function move(\n\n address manager,\n\n uint cdp,\n\n address dst,\n\n uint rad\n\n ) public {\n\n ManagerLike(manager).move(cdp, dst, rad);\n\n }\n\n\n\n function frob(\n\n address manager,\n\n uint cdp,\n\n int dink,\n\n int dart\n\n ) public {\n\n ManagerLike(manager).frob(cdp, dink, dart);\n\n }\n\n\n\n function quit(\n\n address manager,\n\n uint cdp,\n\n address dst\n\n ) public {\n\n ManagerLike(manager).quit(cdp, dst);\n\n }\n\n\n\n function enter(\n\n address manager,\n\n address src,\n\n uint cdp\n\n ) public {\n\n ManagerLike(manager).enter(src, cdp);\n\n }\n\n\n\n function shift(\n\n address manager,\n\n uint cdpSrc,\n\n uint cdpOrg\n\n ) public {\n\n ManagerLike(manager).shift(cdpSrc, cdpOrg);\n\n }\n\n\n\n function makeGemBag(\n\n address gemJoin\n\n ) public returns (address bag) {\n\n bag = GNTJoinLike(gemJoin).make(address(this));\n\n }\n\n\n\n function lockETH(\n\n address manager,\n\n address ethJoin,\n\n uint cdp\n\n ) public payable {\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, address(this));\n\n // Locks WETH amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(msg.value),\n\n 0\n\n );\n\n\n\n emit CDPAction('lockETH', cdp, msg.value, 0);\n\n }\n\n\n\n function lockGem(\n\n address manager,\n\n address gemJoin,\n\n uint cdp,\n\n uint wad,\n\n bool transferFrom\n\n ) public {\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, address(this), wad, transferFrom);\n\n // Locks token amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(convertTo18(gemJoin, wad)),\n\n 0\n\n );\n\n\n\n emit CDPAction('lockGem', cdp, wad, 0);\n\n }\n\n\n\n function freeETH(\n\n address manager,\n\n address ethJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n // Unlocks WETH amount from the CDP\n\n frob(manager, cdp, -toInt(wad), 0);\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad);\n\n // Exits WETH amount to proxy address as a token\n\n GemJoinLike(ethJoin).exit(address(this), wad);\n\n // Converts WETH to ETH\n\n GemJoinLike(ethJoin).gem().withdraw(wad);\n\n // Sends ETH back to the user's wallet\n\n msg.sender.transfer(wad);\n\n\n\n emit CDPAction('freeETH', cdp, wad, 0);\n\n }\n\n\n\n function freeGem(\n\n address manager,\n\n address gemJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n uint wad18 = convertTo18(gemJoin, wad);\n\n // Unlocks token amount from the CDP\n\n frob(manager, cdp, -toInt(wad18), 0);\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad18);\n\n // Exits token amount to the user's wallet as a token\n\n GemJoinLike(gemJoin).exit(msg.sender, wad);\n\n\n\n emit CDPAction('freeGem', cdp, wad, 0);\n\n }\n\n\n\n function exitETH(\n\n address manager,\n\n address ethJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad);\n\n\n\n // Exits WETH amount to proxy address as a token\n\n GemJoinLike(ethJoin).exit(address(this), wad);\n\n // Converts WETH to ETH\n\n GemJoinLike(ethJoin).gem().withdraw(wad);\n\n // Sends ETH back to the user's wallet\n\n msg.sender.transfer(wad);\n\n }\n\n\n\n function exitGem(\n\n address manager,\n\n address gemJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), convertTo18(gemJoin, wad));\n\n\n\n // Exits token amount to the user's wallet as a token\n\n GemJoinLike(gemJoin).exit(msg.sender, wad);\n\n }\n\n\n\n function draw(\n\n address manager,\n\n address jug,\n\n address daiJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Generates debt in the CDP\n\n frob(manager, cdp, 0, _getDrawDart(vat, jug, urn, ilk, wad));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wad));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wad);\n\n\n\n emit CDPAction('draw', cdp, 0, wad);\n\n }\n\n\n\n function wipe(\n\n address manager,\n\n address daiJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n address vat = ManagerLike(manager).vat();\n\n address urn = ManagerLike(manager).urns(cdp);\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n\n\n address own = ManagerLike(manager).owns(cdp);\n\n if (own == address(this) || ManagerLike(manager).cdpCan(own, cdp, address(this)) == 1) {\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, wad);\n\n // Paybacks debt to the CDP\n\n frob(manager, cdp, 0, _getWipeDart(vat, VatLike(vat).dai(urn), urn, ilk));\n\n } else {\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, address(this), wad);\n\n // Paybacks debt to the CDP\n\n VatLike(vat).frob(\n\n ilk,\n\n urn,\n\n address(this),\n\n address(this),\n\n 0,\n\n _getWipeDart(vat, wad * RAY, urn, ilk)\n\n );\n\n }\n\n\n\n emit CDPAction('wipe', cdp, 0, wad);\n\n }\n\n\n\n function wipeAll(\n\n address manager,\n\n address daiJoin,\n\n uint cdp\n\n ) public {\n\n address vat = ManagerLike(manager).vat();\n\n address urn = ManagerLike(manager).urns(cdp);\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n\n\n address own = ManagerLike(manager).owns(cdp);\n\n if (own == address(this) || ManagerLike(manager).cdpCan(own, cdp, address(this)) == 1) {\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, _getWipeAllWad(vat, urn, urn, ilk));\n\n // Paybacks debt to the CDP\n\n frob(manager, cdp, 0, -int(art));\n\n } else {\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, address(this), _getWipeAllWad(vat, address(this), urn, ilk));\n\n // Paybacks debt to the CDP\n\n VatLike(vat).frob(\n\n ilk,\n\n urn,\n\n address(this),\n\n address(this),\n\n 0,\n\n -int(art)\n\n );\n\n }\n\n\n\n emit CDPAction('wipeAll', cdp, 0, art);\n\n }\n\n\n\n function lockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadD\n\n ) public payable {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, urn);\n\n // Locks WETH amount into the CDP and generates debt\n\n frob(manager, cdp, toInt(msg.value), _getDrawDart(vat, jug, urn, ilk, wadD));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n }\n\n\n\n function openLockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint wadD\n\n ) public payable returns (uint cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockETHAndDraw(manager, jug, ethJoin, daiJoin, cdp, wadD);\n\n\n\n emit CDPAction('openLockETHAndDraw', cdp, msg.value, wadD);\n\n }\n\n\n\n function lockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadC,\n\n uint wadD,\n\n bool transferFrom\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, urn, wadC, transferFrom);\n\n // Locks token amount into the CDP and generates debt\n\n frob(manager, cdp, toInt(convertTo18(gemJoin, wadC)), _getDrawDart(vat, jug, urn, ilk, wadD));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n\n\n }\n\n\n\n function openLockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint wadC,\n\n uint wadD,\n\n bool transferFrom\n\n ) public returns (uint cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockGemAndDraw(manager, jug, gemJoin, daiJoin, cdp, wadC, wadD, transferFrom);\n\n\n\n emit CDPAction('openLockGemAndDraw', cdp, wadC, wadD);\n\n\n\n }\n\n\n\n function wipeAllAndFreeETH(\n\n address manager,\n\n address ethJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadC\n\n ) public {\n\n address vat = ManagerLike(manager).vat();\n\n address urn = ManagerLike(manager).urns(cdp);\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, _getWipeAllWad(vat, urn, urn, ilk));\n\n // Paybacks debt to the CDP and unlocks WETH amount from it\n\n frob(\n\n manager,\n\n cdp,\n\n -toInt(wadC),\n\n -int(art)\n\n );\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wadC);\n\n // Exits WETH amount to proxy address as a token\n\n GemJoinLike(ethJoin).exit(address(this), wadC);\n\n // Converts WETH to ETH\n\n GemJoinLike(ethJoin).gem().withdraw(wadC);\n\n // Sends ETH back to the user's wallet\n\n msg.sender.transfer(wadC);\n\n\n\n emit CDPAction('wipeAllAndFreeETH', cdp, wadC, art);\n\n }\n\n\n\n function wipeAndFreeGem(\n\n address manager,\n\n address gemJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadC,\n\n uint wadD\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, wadD);\n\n uint wad18 = convertTo18(gemJoin, wadC);\n\n // Paybacks debt to the CDP and unlocks token amount from it\n\n frob(\n\n manager,\n\n cdp,\n\n -toInt(wad18),\n\n _getWipeDart(ManagerLike(manager).vat(), VatLike(ManagerLike(manager).vat()).dai(urn), urn, ManagerLike(manager).ilks(cdp))\n\n );\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad18);\n\n // Exits token amount to the user's wallet as a token\n\n GemJoinLike(gemJoin).exit(msg.sender, wadC);\n\n }\n\n\n\n function wipeAllAndFreeGem(\n\n address manager,\n\n address gemJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadC\n\n ) public {\n\n address vat = ManagerLike(manager).vat();\n\n address urn = ManagerLike(manager).urns(cdp);\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, _getWipeAllWad(vat, urn, urn, ilk));\n\n uint wad18 = convertTo18(gemJoin, wadC);\n\n // Paybacks debt to the CDP and unlocks token amount from it\n\n frob(\n\n manager,\n\n cdp,\n\n -toInt(wad18),\n\n -int(art)\n\n );\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad18);\n\n // Exits token amount to the user's wallet as a token\n\n GemJoinLike(gemJoin).exit(msg.sender, wadC);\n\n\n\n emit CDPAction('wipeAllAndFreeGem', cdp, wadC, art);\n\n }\n\n\n\n function createProxyAndCDP(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint wadD,\n\n address registry\n\n ) public payable returns(uint) {\n\n\n\n address proxy = ProxyRegistryInterface(registry).build(msg.sender);\n\n\n\n uint cdp = openLockETHAndDraw(manager,\n\n jug,\n\n ethJoin,\n\n daiJoin,\n\n ilk,\n\n wadD\n\n );\n\n\n\n give(manager, cdp, address(proxy));\n\n\n\n return cdp;\n\n\n\n }\n\n\n\n function createProxyAndGemCDP(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint wadC,\n\n uint wadD,\n\n bool transferFrom,\n\n address registry\n\n ) public returns(uint) {\n\n\n\n\n\n address proxy = ProxyRegistryInterface(registry).build(msg.sender);\n\n\n\n uint cdp = openLockGemAndDraw(manager,\n\n jug,\n\n gemJoin,\n\n daiJoin,\n\n ilk,\n\n wadC,\n\n wadD,\n\n transferFrom);\n\n\n\n give(manager, cdp, address(proxy));\n\n\n\n return cdp;\n\n }\n\n}\n\ncontract MCDSaverProxyHelper is DSMath {\n\n\n\n /// @notice Returns a normalized debt _amount based on the current rate\n\n /// @param _amount Amount of dai to be normalized\n\n /// @param _rate Current rate of the stability fee\n\n /// @param _daiVatBalance Balance od Dai in the Vat for that CDP\n\n function normalizeDrawAmount(uint _amount, uint _rate, uint _daiVatBalance) internal pure returns (int dart) {\n\n if (_daiVatBalance < mul(_amount, RAY)) {\n\n dart = toPositiveInt(sub(mul(_amount, RAY), _daiVatBalance) / _rate);\n\n dart = mul(uint(dart), _rate) < mul(_amount, RAY) ? dart + 1 : dart;\n\n }\n\n }\n\n\n\n /// @notice Converts a number to Rad percision\n\n /// @param _wad The input number in wad percision\n\n function toRad(uint _wad) internal pure returns (uint) {\n\n return mul(_wad, 10 ** 27);\n\n }\n\n\n\n /// @notice Converts a number to 18 decimal percision\n\n /// @param _joinAddr Join address of the collateral\n\n /// @param _amount Number to be converted\n\n function convertTo18(address _joinAddr, uint256 _amount) internal view returns (uint256) {\n\n return mul(_amount, 10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n /// @notice Converts a uint to int and checks if positive\n\n /// @param _x Number to be converted\n\n function toPositiveInt(uint _x) internal pure returns (int y) {\n\n y = int(_x);\n\n require(y >= 0, \"int-overflow\");\n\n }\n\n\n\n /// @notice Gets Dai amount in Vat which can be added to Cdp\n\n /// @param _vat Address of Vat contract\n\n /// @param _urn Urn of the Cdp\n\n /// @param _ilk Ilk of the Cdp\n\n function normalizePaybackAmount(address _vat, address _urn, bytes32 _ilk) internal view returns (int amount) {\n\n uint dai = Vat(_vat).dai(_urn);\n\n\n\n (, uint rate,,,) = Vat(_vat).ilks(_ilk);\n\n (, uint art) = Vat(_vat).urns(_ilk, _urn);\n\n\n\n amount = toPositiveInt(dai / rate);\n\n amount = uint(amount) <= art ? - amount : - toPositiveInt(art);\n\n }\n\n\n\n /// @notice Gets the whole debt of the CDP\n\n /// @param _vat Address of Vat contract\n\n /// @param _usr Address of the Dai holder\n\n /// @param _urn Urn of the Cdp\n\n /// @param _ilk Ilk of the Cdp\n\n function getAllDebt(address _vat, address _usr, address _urn, bytes32 _ilk) internal view returns (uint daiAmount) {\n\n (, uint rate,,,) = Vat(_vat).ilks(_ilk);\n\n (, uint art) = Vat(_vat).urns(_ilk, _urn);\n\n uint dai = Vat(_vat).dai(_usr);\n\n\n\n uint rad = sub(mul(art, rate), dai);\n\n daiAmount = rad / RAY;\n\n\n\n daiAmount = mul(daiAmount, RAY) < rad ? daiAmount + 1 : daiAmount;\n\n }\n\n\n\n /// @notice Gets the token address from the Join contract\n\n /// @param _joinAddr Address of the Join contract\n\n function getCollateralAddr(address _joinAddr) internal view returns (address) {\n\n return address(Join(_joinAddr).gem());\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt)\n\n /// @param _manager Manager contract\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getCdpInfo(Manager _manager, uint _cdpId, bytes32 _ilk) public view returns (uint, uint) {\n\n address vat = _manager.vat();\n\n address urn = _manager.urns(_cdpId);\n\n\n\n (uint collateral, uint debt) = Vat(vat).urns(_ilk, urn);\n\n (,uint rate,,,) = Vat(vat).ilks(_ilk);\n\n\n\n return (collateral, rmul(debt, rate));\n\n }\n\n\n\n /// @notice Address that owns the DSProxy that owns the CDP\n\n /// @param _manager Manager contract\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(Manager _manager, uint _cdpId) public view returns (address) {\n\n DSProxy proxy = DSProxy(uint160(_manager.owns(_cdpId)));\n\n\n\n return proxy.owner();\n\n }\n\n}\n\nabstract contract ILendingPool {\n\n function flashLoan( address payable _receiver, address _reserve, uint _amount, bytes calldata _params) external virtual;\n\n}\n\nabstract contract ProtocolInterface {\n\n function deposit(address _user, uint256 _amount) public virtual;\n\n\n\n function withdraw(address _user, uint256 _amount) public virtual;\n\n}\n\ncontract SavingsLogger {\n\n event Deposit(address indexed sender, uint8 protocol, uint256 amount);\n\n event Withdraw(address indexed sender, uint8 protocol, uint256 amount);\n\n event Swap(address indexed sender, uint8 fromProtocol, uint8 toProtocol, uint256 amount);\n\n\n\n function logDeposit(address _sender, uint8 _protocol, uint256 _amount) external {\n\n emit Deposit(_sender, _protocol, _amount);\n\n }\n\n\n\n function logWithdraw(address _sender, uint8 _protocol, uint256 _amount) external {\n\n emit Withdraw(_sender, _protocol, _amount);\n\n }\n\n\n\n function logSwap(address _sender, uint8 _protocolFrom, uint8 _protocolTo, uint256 _amount)\n\n external\n\n {\n\n emit Swap(_sender, _protocolFrom, _protocolTo, _amount);\n\n }\n\n}\n\ncontract AaveSavingsProtocol is ProtocolInterface, DSAuth {\n\n\n\n address public constant ADAI_ADDRESS = 0xfC1E690f61EFd961294b3e1Ce3313fBD8aa4f85d;\n\n address public constant AAVE_LENDING_POOL = 0x398eC7346DcD622eDc5ae82352F02bE94C62d119;\n\n address public constant AAVE_LENDING_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n ERC20(DAI_ADDRESS).approve(AAVE_LENDING_POOL_CORE, uint(-1));\n\n ILendingPool(AAVE_LENDING_POOL).deposit(DAI_ADDRESS, _amount, 0);\n\n\n\n ERC20(ADAI_ADDRESS).transfer(_user, ERC20(ADAI_ADDRESS).balanceOf(address(this)));\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n require(ERC20(ADAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n IAToken(ADAI_ADDRESS).redeem(_amount);\n\n\n\n // return dai we have to user\n\n ERC20(DAI_ADDRESS).transfer(_user, _amount);\n\n }\n\n}\n\ncontract CompoundSavingsProtocol {\n\n\n\n address public constant NEW_CDAI_ADDRESS = 0x5d3a536E4D6DbD6114cc1Ead35777bAB948E3643;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n CTokenInterface public constant cDaiContract = CTokenInterface(NEW_CDAI_ADDRESS);\n\n\n\n function compDeposit(address _user, uint _amount) internal {\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n // mainnet only\n\n ERC20(DAI_ADDRESS).approve(NEW_CDAI_ADDRESS, uint(-1));\n\n\n\n // mint cDai\n\n require(cDaiContract.mint(_amount) == 0, \"Failed Mint\");\n\n }\n\n\n\n function compWithdraw(address _user, uint _amount) internal {\n\n // transfer all users balance to this contract\n\n require(cDaiContract.transferFrom(_user, address(this), ERC20(NEW_CDAI_ADDRESS).balanceOf(_user)));\n\n\n\n // approve cDai to compound contract\n\n cDaiContract.approve(NEW_CDAI_ADDRESS, uint(-1));\n\n // get dai from cDai contract\n\n require(cDaiContract.redeemUnderlying(_amount) == 0, \"Reedem Failed\");\n\n\n\n // return to user balance we didn't spend\n\n uint cDaiBalance = cDaiContract.balanceOf(address(this));\n\n if (cDaiBalance > 0) {\n\n cDaiContract.transfer(_user, cDaiBalance);\n\n }\n\n // return dai we have to user\n\n ERC20(DAI_ADDRESS).transfer(_user, _amount);\n\n }\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) virtual public view returns (uint);\n\n function ilks(bytes32) virtual public view returns (uint, uint, uint, uint, uint);\n\n function dai(address) virtual public view returns (uint);\n\n function urns(bytes32, address) virtual public view returns (uint, uint);\n\n function frob(bytes32, address, address, address, int, int) virtual public;\n\n function hope(address) virtual public;\n\n function move(address, address, uint) virtual public;\n\n}\n\nabstract contract PotLike {\n\n function pie(address) virtual public view returns (uint);\n\n function drip() virtual public returns (uint);\n\n function join(uint) virtual public;\n\n function exit(uint) virtual public;\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint) virtual public;\n\n function transfer(address, uint) virtual public;\n\n function transferFrom(address, address, uint) virtual public;\n\n function deposit() virtual public payable;\n\n function withdraw(uint) virtual public;\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() virtual public returns (VatLike);\n\n function dai() virtual public returns (GemLike);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\ncontract DSRSavingsProtocol is DSMath {\n\n\n\n // Mainnet\n\n address public constant POT_ADDRESS = 0x197E90f9FAD81970bA7976f33CbD77088E5D7cf7;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n\n\n function dsrDeposit(uint _amount, bool _fromUser) internal {\n\n VatLike vat = DaiJoinLike(DAI_JOIN_ADDRESS).vat();\n\n\n\n uint chi = PotLike(POT_ADDRESS).drip();\n\n\n\n daiJoin_join(DAI_JOIN_ADDRESS, address(this), _amount, _fromUser);\n\n\n\n if (vat.can(address(this), address(POT_ADDRESS)) == 0) {\n\n vat.hope(POT_ADDRESS);\n\n }\n\n\n\n PotLike(POT_ADDRESS).join(mul(_amount, RAY) / chi);\n\n }\n\n\n\n function dsrWithdraw(uint _amount, bool _toUser) internal {\n\n VatLike vat = DaiJoinLike(DAI_JOIN_ADDRESS).vat();\n\n\n\n uint chi = PotLike(POT_ADDRESS).drip();\n\n uint pie = mul(_amount, RAY) / chi;\n\n\n\n PotLike(POT_ADDRESS).exit(pie);\n\n uint balance = DaiJoinLike(DAI_JOIN_ADDRESS).vat().dai(address(this));\n\n\n\n if (vat.can(address(this), address(DAI_JOIN_ADDRESS)) == 0) {\n\n vat.hope(DAI_JOIN_ADDRESS);\n\n }\n\n\n\n address to;\n\n if (_toUser) {\n\n to = msg.sender;\n\n } else {\n\n to = address(this);\n\n }\n\n\n\n if (_amount == uint(-1)) {\n\n DaiJoinLike(DAI_JOIN_ADDRESS).exit(to, mul(chi, pie) / RAY);\n\n } else {\n\n DaiJoinLike(DAI_JOIN_ADDRESS).exit(\n\n to,\n\n balance >= mul(_amount, RAY) ? _amount : balance / RAY\n\n );\n\n }\n\n }\n\n\n\n function daiJoin_join(address apt, address urn, uint wad, bool _fromUser) internal {\n\n if (_fromUser) {\n\n DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);\n\n }\n\n\n\n DaiJoinLike(apt).dai().approve(apt, wad);\n\n\n\n DaiJoinLike(apt).join(urn, wad);\n\n }\n\n}\n\ncontract DydxSavingsProtocol is ProtocolInterface, DSAuth {\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n ISoloMargin public soloMargin;\n\n address public savingsProxy;\n\n\n\n uint daiMarketId = 3;\n\n\n\n constructor() public {\n\n soloMargin = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n }\n\n\n\n function addSavingsProxy(address _savingsProxy) public auth {\n\n savingsProxy = _savingsProxy;\n\n }\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n Account.Info[] memory accounts = new Account.Info[](1);\n\n accounts[0] = getAccount(_user, 0);\n\n\n\n Actions.ActionArgs[] memory actions = new Actions.ActionArgs[](1);\n\n Types.AssetAmount memory amount = Types.AssetAmount({\n\n sign: true,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: _amount\n\n });\n\n\n\n actions[0] = Actions.ActionArgs({\n\n actionType: Actions.ActionType.Deposit,\n\n accountId: 0,\n\n amount: amount,\n\n primaryMarketId: daiMarketId,\n\n otherAddress: _user,\n\n secondaryMarketId: 0, //not used\n\n otherAccountId: 0, //not used\n\n data: \"\" //not used\n\n });\n\n\n\n soloMargin.operate(accounts, actions);\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n Account.Info[] memory accounts = new Account.Info[](1);\n\n accounts[0] = getAccount(_user, 0);\n\n\n\n Actions.ActionArgs[] memory actions = new Actions.ActionArgs[](1);\n\n Types.AssetAmount memory amount = Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: _amount\n\n });\n\n\n\n actions[0] = Actions.ActionArgs({\n\n actionType: Actions.ActionType.Withdraw,\n\n accountId: 0,\n\n amount: amount,\n\n primaryMarketId: daiMarketId,\n\n otherAddress: _user,\n\n secondaryMarketId: 0, //not used\n\n otherAccountId: 0, //not used\n\n data: \"\" //not used\n\n });\n\n\n\n soloMargin.operate(accounts, actions);\n\n }\n\n\n\n function getWeiBalance(address _user, uint _index) public view returns(Types.Wei memory) {\n\n\n\n Types.Wei[] memory weiBalances;\n\n (,,weiBalances) = soloMargin.getAccountBalances(getAccount(_user, _index));\n\n\n\n return weiBalances[daiMarketId];\n\n }\n\n\n\n function getParBalance(address _user, uint _index) public view returns(Types.Par memory) {\n\n Types.Par[] memory parBalances;\n\n (,parBalances,) = soloMargin.getAccountBalances(getAccount(_user, _index));\n\n\n\n return parBalances[daiMarketId];\n\n }\n\n\n\n function getAccount(address _user, uint _index) public pure returns(Account.Info memory) {\n\n Account.Info memory account = Account.Info({\n\n owner: _user,\n\n number: _index\n\n });\n\n\n\n return account;\n\n }\n\n}\n\nabstract contract ISoloMargin {\n\n struct OperatorArg {\n\n address operator;\n\n bool trusted;\n\n }\n\n\n\n function operate(\n\n Account.Info[] memory accounts,\n\n Actions.ActionArgs[] memory actions\n\n ) public virtual;\n\n\n\n function getAccountBalances(\n\n Account.Info memory account\n\n ) public view virtual returns (\n\n address[] memory,\n\n Types.Par[] memory,\n\n Types.Wei[] memory\n\n );\n\n\n\n function setOperators(\n\n OperatorArg[] memory args\n\n ) public virtual;\n\n\n\n\n\n function getNumMarkets() public view virtual returns (uint256);\n\n\n\n function getMarketTokenAddress(uint256 marketId)\n\n public\n\n view\n\n virtual\n\n returns (address);\n\n}\n\nlibrary Account {\n\n // ============ Enums ============\n\n\n\n /*\n\n * Most-recently-cached account status.\n\n *\n\n * Normal: Can only be liquidated if the account values are violating the global margin-ratio.\n\n * Liquid: Can be liquidated no matter the account values.\n\n * Can be vaporized if there are no more positive account values.\n\n * Vapor: Has only negative (or zeroed) account values. Can be vaporized.\n\n *\n\n */\n\n enum Status {\n\n Normal,\n\n Liquid,\n\n Vapor\n\n }\n\n\n\n // ============ Structs ============\n\n\n\n // Represents the unique key that specifies an account\n\n struct Info {\n\n address owner; // The address that owns the account\n\n uint256 number; // A nonce that allows a single address to control many accounts\n\n }\n\n\n\n // The complete storage for any account\n\n struct Storage {\n\n mapping (uint256 => Types.Par) balances; // Mapping from marketId to principal\n\n Status status;\n\n }\n\n\n\n // ============ Library Functions ============\n\n\n\n function equals(\n\n Info memory a,\n\n Info memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.owner == b.owner && a.number == b.number;\n\n }\n\n}\n\nlibrary Actions {\n\n\n\n // ============ Constants ============\n\n\n\n bytes32 constant FILE = \"Actions\";\n\n\n\n // ============ Enums ============\n\n\n\n enum ActionType {\n\n Deposit, // supply tokens\n\n Withdraw, // borrow tokens\n\n Transfer, // transfer balance between accounts\n\n Buy, // buy an amount of some token (externally)\n\n Sell, // sell an amount of some token (externally)\n\n Trade, // trade tokens against another account\n\n Liquidate, // liquidate an undercollateralized or expiring account\n\n Vaporize, // use excess tokens to zero-out a completely negative account\n\n Call // send arbitrary data to an address\n\n }\n\n\n\n enum AccountLayout {\n\n OnePrimary,\n\n TwoPrimary,\n\n PrimaryAndSecondary\n\n }\n\n\n\n enum MarketLayout {\n\n ZeroMarkets,\n\n OneMarket,\n\n TwoMarkets\n\n }\n\n\n\n // ============ Structs ============\n\n\n\n /*\n\n * Arguments that are passed to Solo in an ordered list as part of a single operation.\n\n * Each ActionArgs has an actionType which specifies which action struct that this data will be\n\n * parsed into before being processed.\n\n */\n\n struct ActionArgs {\n\n ActionType actionType;\n\n uint256 accountId;\n\n Types.AssetAmount amount;\n\n uint256 primaryMarketId;\n\n uint256 secondaryMarketId;\n\n address otherAddress;\n\n uint256 otherAccountId;\n\n bytes data;\n\n }\n\n\n\n // ============ Action Types ============\n\n\n\n /*\n\n * Moves tokens from an address to Solo. Can either repay a borrow or provide additional supply.\n\n */\n\n struct DepositArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 market;\n\n address from;\n\n }\n\n\n\n /*\n\n * Moves tokens from Solo to another address. Can either borrow tokens or reduce the amount\n\n * previously supplied.\n\n */\n\n struct WithdrawArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 market;\n\n address to;\n\n }\n\n\n\n /*\n\n * Transfers balance between two accounts. The msg.sender must be an operator for both accounts.\n\n * The amount field applies to accountOne.\n\n * This action does not require any token movement since the trade is done internally to Solo.\n\n */\n\n struct TransferArgs {\n\n Types.AssetAmount amount;\n\n Account.Info accountOne;\n\n Account.Info accountTwo;\n\n uint256 market;\n\n }\n\n\n\n /*\n\n * Acquires a certain amount of tokens by spending other tokens. Sends takerMarket tokens to the\n\n * specified exchangeWrapper contract and expects makerMarket tokens in return. The amount field\n\n * applies to the makerMarket.\n\n */\n\n struct BuyArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 makerMarket;\n\n uint256 takerMarket;\n\n address exchangeWrapper;\n\n bytes orderData;\n\n }\n\n\n\n /*\n\n * Spends a certain amount of tokens to acquire other tokens. Sends takerMarket tokens to the\n\n * specified exchangeWrapper and expects makerMarket tokens in return. The amount field applies\n\n * to the takerMarket.\n\n */\n\n struct SellArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 takerMarket;\n\n uint256 makerMarket;\n\n address exchangeWrapper;\n\n bytes orderData;\n\n }\n\n\n\n /*\n\n * Trades balances between two accounts using any external contract that implements the\n\n * AutoTrader interface. The AutoTrader contract must be an operator for the makerAccount (for\n\n * which it is trading on-behalf-of). The amount field applies to the makerAccount and the\n\n * inputMarket. This proposed change to the makerAccount is passed to the AutoTrader which will\n\n * quote a change for the makerAccount in the outputMarket (or will disallow the trade).\n\n * This action does not require any token movement since the trade is done internally to Solo.\n\n */\n\n struct TradeArgs {\n\n Types.AssetAmount amount;\n\n Account.Info takerAccount;\n\n Account.Info makerAccount;\n\n uint256 inputMarket;\n\n uint256 outputMarket;\n\n address autoTrader;\n\n bytes tradeData;\n\n }\n\n\n\n /*\n\n * Each account must maintain a certain margin-ratio (specified globally). If the account falls\n\n * below this margin-ratio, it can be liquidated by any other account. This allows anyone else\n\n * (arbitrageurs) to repay any borrowed asset (owedMarket) of the liquidating account in\n\n * exchange for any collateral asset (heldMarket) of the liquidAccount. The ratio is determined\n\n * by the price ratio (given by the oracles) plus a spread (specified globally). Liquidating an\n\n * account also sets a flag on the account that the account is being liquidated. This allows\n\n * anyone to continue liquidating the account until there are no more borrows being taken by the\n\n * liquidating account. Liquidators do not have to liquidate the entire account all at once but\n\n * can liquidate as much as they choose. The liquidating flag allows liquidators to continue\n\n * liquidating the account even if it becomes collateralized through partial liquidation or\n\n * price movement.\n\n */\n\n struct LiquidateArgs {\n\n Types.AssetAmount amount;\n\n Account.Info solidAccount;\n\n Account.Info liquidAccount;\n\n uint256 owedMarket;\n\n uint256 heldMarket;\n\n }\n\n\n\n /*\n\n * Similar to liquidate, but vaporAccounts are accounts that have only negative balances\n\n * remaining. The arbitrageur pays back the negative asset (owedMarket) of the vaporAccount in\n\n * exchange for a collateral asset (heldMarket) at a favorable spread. However, since the\n\n * liquidAccount has no collateral assets, the collateral must come from Solo's excess tokens.\n\n */\n\n struct VaporizeArgs {\n\n Types.AssetAmount amount;\n\n Account.Info solidAccount;\n\n Account.Info vaporAccount;\n\n uint256 owedMarket;\n\n uint256 heldMarket;\n\n }\n\n\n\n /*\n\n * Passes arbitrary bytes of data to an external contract that implements the Callee interface.\n\n * Does not change any asset amounts. This function may be useful for setting certain variables\n\n * on layer-two contracts for certain accounts without having to make a separate Ethereum\n\n * transaction for doing so. Also, the second-layer contracts can ensure that the call is coming\n\n * from an operator of the particular account.\n\n */\n\n struct CallArgs {\n\n Account.Info account;\n\n address callee;\n\n bytes data;\n\n }\n\n\n\n // ============ Helper Functions ============\n\n\n\n function getMarketLayout(\n\n ActionType actionType\n\n )\n\n internal\n\n pure\n\n returns (MarketLayout)\n\n {\n\n if (\n\n actionType == Actions.ActionType.Deposit\n\n || actionType == Actions.ActionType.Withdraw\n\n || actionType == Actions.ActionType.Transfer\n\n ) {\n\n return MarketLayout.OneMarket;\n\n }\n\n else if (actionType == Actions.ActionType.Call) {\n\n return MarketLayout.ZeroMarkets;\n\n }\n\n return MarketLayout.TwoMarkets;\n\n }\n\n\n\n function getAccountLayout(\n\n ActionType actionType\n\n )\n\n internal\n\n pure\n\n returns (AccountLayout)\n\n {\n\n if (\n\n actionType == Actions.ActionType.Transfer\n\n || actionType == Actions.ActionType.Trade\n\n ) {\n\n return AccountLayout.TwoPrimary;\n\n } else if (\n\n actionType == Actions.ActionType.Liquidate\n\n || actionType == Actions.ActionType.Vaporize\n\n ) {\n\n return AccountLayout.PrimaryAndSecondary;\n\n }\n\n return AccountLayout.OnePrimary;\n\n }\n\n\n\n // ============ Parsing Functions ============\n\n\n\n function parseDepositArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (DepositArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Deposit);\n\n return DepositArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n market: args.primaryMarketId,\n\n from: args.otherAddress\n\n });\n\n }\n\n\n\n function parseWithdrawArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (WithdrawArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Withdraw);\n\n return WithdrawArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n market: args.primaryMarketId,\n\n to: args.otherAddress\n\n });\n\n }\n\n\n\n function parseTransferArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (TransferArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Transfer);\n\n return TransferArgs({\n\n amount: args.amount,\n\n accountOne: accounts[args.accountId],\n\n accountTwo: accounts[args.otherAccountId],\n\n market: args.primaryMarketId\n\n });\n\n }\n\n\n\n function parseBuyArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (BuyArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Buy);\n\n return BuyArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n makerMarket: args.primaryMarketId,\n\n takerMarket: args.secondaryMarketId,\n\n exchangeWrapper: args.otherAddress,\n\n orderData: args.data\n\n });\n\n }\n\n\n\n function parseSellArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (SellArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Sell);\n\n return SellArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n takerMarket: args.primaryMarketId,\n\n makerMarket: args.secondaryMarketId,\n\n exchangeWrapper: args.otherAddress,\n\n orderData: args.data\n\n });\n\n }\n\n\n\n function parseTradeArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (TradeArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Trade);\n\n return TradeArgs({\n\n amount: args.amount,\n\n takerAccount: accounts[args.accountId],\n\n makerAccount: accounts[args.otherAccountId],\n\n inputMarket: args.primaryMarketId,\n\n outputMarket: args.secondaryMarketId,\n\n autoTrader: args.otherAddress,\n\n tradeData: args.data\n\n });\n\n }\n\n\n\n function parseLiquidateArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (LiquidateArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Liquidate);\n\n return LiquidateArgs({\n\n amount: args.amount,\n\n solidAccount: accounts[args.accountId],\n\n liquidAccount: accounts[args.otherAccountId],\n\n owedMarket: args.primaryMarketId,\n\n heldMarket: args.secondaryMarketId\n\n });\n\n }\n\n\n\n function parseVaporizeArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (VaporizeArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Vaporize);\n\n return VaporizeArgs({\n\n amount: args.amount,\n\n solidAccount: accounts[args.accountId],\n\n vaporAccount: accounts[args.otherAccountId],\n\n owedMarket: args.primaryMarketId,\n\n heldMarket: args.secondaryMarketId\n\n });\n\n }\n\n\n\n function parseCallArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (CallArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Call);\n\n return CallArgs({\n\n account: accounts[args.accountId],\n\n callee: args.otherAddress,\n\n data: args.data\n\n });\n\n }\n\n}\n\nlibrary Math {\n\n using SafeMath for uint256;\n\n\n\n // ============ Constants ============\n\n\n\n bytes32 constant FILE = \"Math\";\n\n\n\n // ============ Library Functions ============\n\n\n\n /*\n\n * Return target * (numerator / denominator).\n\n */\n\n function getPartial(\n\n uint256 target,\n\n uint256 numerator,\n\n uint256 denominator\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return target.mul(numerator).div(denominator);\n\n }\n\n\n\n /*\n\n * Return target * (numerator / denominator), but rounded up.\n\n */\n\n function getPartialRoundUp(\n\n uint256 target,\n\n uint256 numerator,\n\n uint256 denominator\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n if (target == 0 || numerator == 0) {\n\n // SafeMath will check for zero denominator\n\n return SafeMath.div(0, denominator);\n\n }\n\n return target.mul(numerator).sub(1).div(denominator).add(1);\n\n }\n\n\n\n function to128(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint128)\n\n {\n\n uint128 result = uint128(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint128\"\n\n );\n\n return result;\n\n }\n\n\n\n function to96(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint96)\n\n {\n\n uint96 result = uint96(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint96\"\n\n );\n\n return result;\n\n }\n\n\n\n function to32(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint32)\n\n {\n\n uint32 result = uint32(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint32\"\n\n );\n\n return result;\n\n }\n\n\n\n function min(\n\n uint256 a,\n\n uint256 b\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return a < b ? a : b;\n\n }\n\n\n\n function max(\n\n uint256 a,\n\n uint256 b\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return a > b ? a : b;\n\n }\n\n}\n\nlibrary Require {\n\n\n\n // ============ Constants ============\n\n\n\n uint256 constant ASCII_ZERO = 48; // '0'\n\n uint256 constant ASCII_RELATIVE_ZERO = 87; // 'a' - 10\n\n uint256 constant ASCII_LOWER_EX = 120; // 'x'\n\n bytes2 constant COLON = 0x3a20; // ': '\n\n bytes2 constant COMMA = 0x2c20; // ', '\n\n bytes2 constant LPAREN = 0x203c; // ' <'\n\n byte constant RPAREN = 0x3e; // '>'\n\n uint256 constant FOUR_BIT_MASK = 0xf;\n\n\n\n // ============ Library Functions ============\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason)\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n uint256 payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n uint256 payloadA,\n\n uint256 payloadB\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA,\n\n uint256 payloadB\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA,\n\n uint256 payloadB,\n\n uint256 payloadC\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n COMMA,\n\n stringify(payloadC),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n bytes32 payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n bytes32 payloadA,\n\n uint256 payloadB,\n\n uint256 payloadC\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n COMMA,\n\n stringify(payloadC),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n // ============ Private Functions ============\n\n\n\n function stringifyTruncated(\n\n bytes32 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n // put the input bytes into the result\n\n bytes memory result = abi.encodePacked(input);\n\n\n\n // determine the length of the input by finding the location of the last non-zero byte\n\n for (uint256 i = 32; i > 0; ) {\n\n // reverse-for-loops with unsigned integer\n\n /* solium-disable-next-line security/no-modify-for-iter-var */\n\n i--;\n\n\n\n // find the last non-zero byte in order to determine the length\n\n if (result[i] != 0) {\n\n uint256 length = i + 1;\n\n\n\n /* solium-disable-next-line security/no-inline-assembly */\n\n assembly {\n\n mstore(result, length) // r.length = length;\n\n }\n\n\n\n return result;\n\n }\n\n }\n\n\n\n // all bytes are zero\n\n return new bytes(0);\n\n }\n\n\n\n function stringify(\n\n uint256 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n if (input == 0) {\n\n return \"0\";\n\n }\n\n\n\n // get the final string length\n\n uint256 j = input;\n\n uint256 length;\n\n while (j != 0) {\n\n length++;\n\n j /= 10;\n\n }\n\n\n\n // allocate the string\n\n bytes memory bstr = new bytes(length);\n\n\n\n // populate the string starting with the least-significant character\n\n j = input;\n\n for (uint256 i = length; i > 0; ) {\n\n // reverse-for-loops with unsigned integer\n\n /* solium-disable-next-line security/no-modify-for-iter-var */\n\n i--;\n\n\n\n // take last decimal digit\n\n bstr[i] = byte(uint8(ASCII_ZERO + (j % 10)));\n\n\n\n // remove the last decimal digit\n\n j /= 10;\n\n }\n\n\n\n return bstr;\n\n }\n\n\n\n function stringify(\n\n address input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n uint256 z = uint256(input);\n\n\n\n // addresses are \"0x\" followed by 20 bytes of data which take up 2 characters each\n\n bytes memory result = new bytes(42);\n\n\n\n // populate the result with \"0x\"\n\n result[0] = byte(uint8(ASCII_ZERO));\n\n result[1] = byte(uint8(ASCII_LOWER_EX));\n\n\n\n // for each byte (starting from the lowest byte), populate the result with two characters\n\n for (uint256 i = 0; i < 20; i++) {\n\n // each byte takes two characters\n\n uint256 shift = i * 2;\n\n\n\n // populate the least-significant character\n\n result[41 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n\n\n // populate the most-significant character\n\n result[40 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n }\n\n\n\n return result;\n\n }\n\n\n\n function stringify(\n\n bytes32 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n uint256 z = uint256(input);\n\n\n\n // bytes32 are \"0x\" followed by 32 bytes of data which take up 2 characters each\n\n bytes memory result = new bytes(66);\n\n\n\n // populate the result with \"0x\"\n\n result[0] = byte(uint8(ASCII_ZERO));\n\n result[1] = byte(uint8(ASCII_LOWER_EX));\n\n\n\n // for each byte (starting from the lowest byte), populate the result with two characters\n\n for (uint256 i = 0; i < 32; i++) {\n\n // each byte takes two characters\n\n uint256 shift = i * 2;\n\n\n\n // populate the least-significant character\n\n result[65 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n\n\n // populate the most-significant character\n\n result[64 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n }\n\n\n\n return result;\n\n }\n\n\n\n function char(\n\n uint256 input\n\n )\n\n private\n\n pure\n\n returns (byte)\n\n {\n\n // return ASCII digit (0-9)\n\n if (input < 10) {\n\n return byte(uint8(input + ASCII_ZERO));\n\n }\n\n\n\n // return ASCII letter (a-f)\n\n return byte(uint8(input + ASCII_RELATIVE_ZERO));\n\n }\n\n}\n\nlibrary Types {\n\n using Math for uint256;\n\n\n\n // ============ AssetAmount ============\n\n\n\n enum AssetDenomination {\n\n Wei, // the amount is denominated in wei\n\n Par // the amount is denominated in par\n\n }\n\n\n\n enum AssetReference {\n\n Delta, // the amount is given as a delta from the current value\n\n Target // the amount is given as an exact number to end up at\n\n }\n\n\n\n struct AssetAmount {\n\n bool sign; // true if positive\n\n AssetDenomination denomination;\n\n AssetReference ref;\n\n uint256 value;\n\n }\n\n\n\n // ============ Par (Principal Amount) ============\n\n\n\n // Total borrow and supply values for a market\n\n struct TotalPar {\n\n uint128 borrow;\n\n uint128 supply;\n\n }\n\n\n\n // Individual principal amount for an account\n\n struct Par {\n\n bool sign; // true if positive\n\n uint128 value;\n\n }\n\n\n\n function zeroPar()\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return Par({\n\n sign: false,\n\n value: 0\n\n });\n\n }\n\n\n\n function sub(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return add(a, negative(b));\n\n }\n\n\n\n function add(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n Par memory result;\n\n if (a.sign == b.sign) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.add(a.value, b.value).to128();\n\n } else {\n\n if (a.value >= b.value) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.sub(a.value, b.value).to128();\n\n } else {\n\n result.sign = b.sign;\n\n result.value = SafeMath.sub(b.value, a.value).to128();\n\n }\n\n }\n\n return result;\n\n }\n\n\n\n function equals(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n if (a.value == b.value) {\n\n if (a.value == 0) {\n\n return true;\n\n }\n\n return a.sign == b.sign;\n\n }\n\n return false;\n\n }\n\n\n\n function negative(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return Par({\n\n sign: !a.sign,\n\n value: a.value\n\n });\n\n }\n\n\n\n function isNegative(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return !a.sign && a.value > 0;\n\n }\n\n\n\n function isPositive(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.sign && a.value > 0;\n\n }\n\n\n\n function isZero(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.value == 0;\n\n }\n\n\n\n // ============ Wei (Token Amount) ============\n\n\n\n // Individual token amount for an account\n\n struct Wei {\n\n bool sign; // true if positive\n\n uint256 value;\n\n }\n\n\n\n function zeroWei()\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return Wei({\n\n sign: false,\n\n value: 0\n\n });\n\n }\n\n\n\n function sub(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return add(a, negative(b));\n\n }\n\n\n\n function add(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n Wei memory result;\n\n if (a.sign == b.sign) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.add(a.value, b.value);\n\n } else {\n\n if (a.value >= b.value) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.sub(a.value, b.value);\n\n } else {\n\n result.sign = b.sign;\n\n result.value = SafeMath.sub(b.value, a.value);\n\n }\n\n }\n\n return result;\n\n }\n\n\n\n function equals(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n if (a.value == b.value) {\n\n if (a.value == 0) {\n\n return true;\n\n }\n\n return a.sign == b.sign;\n\n }\n\n return false;\n\n }\n\n\n\n function negative(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return Wei({\n\n sign: !a.sign,\n\n value: a.value\n\n });\n\n }\n\n\n\n function isNegative(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return !a.sign && a.value > 0;\n\n }\n\n\n\n function isPositive(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.sign && a.value > 0;\n\n }\n\n\n\n function isZero(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.value == 0;\n\n }\n\n}\n\ncontract FulcrumSavingsProtocol is ProtocolInterface, DSAuth {\n\n\n\n address public constant NEW_IDAI_ADDRESS = 0x493C57C4763932315A328269E1ADaD09653B9081;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public savingsProxy;\n\n uint public decimals = 10 ** 18;\n\n\n\n function addSavingsProxy(address _savingsProxy) public auth {\n\n savingsProxy = _savingsProxy;\n\n }\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n // approve dai to Fulcrum\n\n ERC20(DAI_ADDRESS).approve(NEW_IDAI_ADDRESS, uint(-1));\n\n\n\n // mint iDai\n\n ITokenInterface(NEW_IDAI_ADDRESS).mint(_user, _amount);\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n // transfer all users tokens to our contract\n\n require(ERC20(NEW_IDAI_ADDRESS).transferFrom(_user, address(this), ITokenInterface(NEW_IDAI_ADDRESS).balanceOf(_user)));\n\n\n\n // approve iDai to that contract\n\n ERC20(NEW_IDAI_ADDRESS).approve(NEW_IDAI_ADDRESS, uint(-1));\n\n uint tokenPrice = ITokenInterface(NEW_IDAI_ADDRESS).tokenPrice();\n\n\n\n // get dai from iDai contract\n\n ITokenInterface(NEW_IDAI_ADDRESS).burn(_user, _amount * decimals / tokenPrice);\n\n\n\n // return all remaining tokens back to user\n\n require(ERC20(NEW_IDAI_ADDRESS).transfer(_user, ITokenInterface(NEW_IDAI_ADDRESS).balanceOf(address(this))));\n\n }\n\n}\n\ncontract LoanShifterTaker is AdminAuth, ProxyPermission {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n\n\n Manager public constant manager = Manager(MANAGER_ADDRESS);\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x597C52281b31B9d949a9D8fEbA08F7A2530a965e);\n\n\n\n enum Protocols { MCD, COMPOUND }\n\n enum SwapType { NO_SWAP, COLL_SWAP, DEBT_SWAP }\n\n\n\n struct LoanShiftData {\n\n Protocols fromProtocol;\n\n Protocols toProtocol;\n\n SwapType swapType;\n\n bool wholeDebt;\n\n uint collAmount;\n\n uint debtAmount;\n\n address debtAddr1;\n\n address debtAddr2;\n\n address addrLoan1;\n\n address addrLoan2;\n\n uint id1;\n\n uint id2;\n\n }\n\n\n\n /// @notice Main entry point, it will move or transform a loan\n\n /// @dev Called through DSProxy\n\n function moveLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n LoanShiftData memory _loanShift\n\n ) public payable {\n\n if (_isSameTypeVaults(_loanShift)) {\n\n _forkVault(_loanShift);\n\n return;\n\n }\n\n\n\n _callCloseAndOpen(_exchangeData, _loanShift);\n\n }\n\n\n\n //////////////////////// INTERNAL FUNCTIONS //////////////////////////\n\n\n\n function _callCloseAndOpen(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n LoanShiftData memory _loanShift\n\n ) internal {\n\n address protoAddr = shifterRegistry.getAddr(getNameByProtocol(uint8(_loanShift.fromProtocol)));\n\n\n\n uint loanAmount = _loanShift.debtAmount;\n\n\n\n if (_loanShift.wholeDebt) {\n\n loanAmount = ILoanShifter(protoAddr).getLoanAmount(_loanShift.id1, _loanShift.debtAddr1);\n\n }\n\n\n\n (\n\n uint[8] memory numData,\n\n address[8] memory addrData,\n\n uint8[3] memory enumData,\n\n bytes memory callData\n\n )\n\n = _packData(_loanShift, _exchangeData);\n\n\n\n // encode data\n\n bytes memory paramsData = abi.encode(numData, addrData, enumData, callData, address(this));\n\n\n\n address payable loanShifterReceiverAddr = payable(shifterRegistry.getAddr(\"LOAN_SHIFTER_RECEIVER\"));\n\n\n\n loanShifterReceiverAddr.transfer(address(this).balance);\n\n\n\n // call FL\n\n givePermission(loanShifterReceiverAddr);\n\n\n\n lendingPool.flashLoan(loanShifterReceiverAddr,\n\n getLoanAddr(_loanShift.debtAddr1, _loanShift.fromProtocol), loanAmount, paramsData);\n\n\n\n removePermission(loanShifterReceiverAddr);\n\n }\n\n\n\n function _forkVault(LoanShiftData memory _loanShift) internal {\n\n // Create new Vault to move to\n\n if (_loanShift.id2 == 0) {\n\n _loanShift.id2 = manager.open(manager.ilks(_loanShift.id1), address(this));\n\n }\n\n\n\n if (_loanShift.wholeDebt) {\n\n manager.shift(_loanShift.id1, _loanShift.id2);\n\n }\n\n }\n\n\n\n function _isSameTypeVaults(LoanShiftData memory _loanShift) internal pure returns (bool) {\n\n return _loanShift.fromProtocol == Protocols.MCD && _loanShift.toProtocol == Protocols.MCD\n\n && _loanShift.addrLoan1 == _loanShift.addrLoan2;\n\n }\n\n\n\n function getNameByProtocol(uint8 _proto) internal pure returns (string memory) {\n\n if (_proto == 0) {\n\n return \"MCD_SHIFTER\";\n\n } else if (_proto == 1) {\n\n return \"COMP_SHIFTER\";\n\n }\n\n }\n\n\n\n function getLoanAddr(address _address, Protocols _fromProtocol) internal returns (address) {\n\n if (_fromProtocol == Protocols.COMPOUND) {\n\n return CTokenInterface(_address).underlying();\n\n } else if (_fromProtocol == Protocols.MCD) {\n\n return DAI_ADDRESS;\n\n } else {\n\n return address(0);\n\n }\n\n }\n\n\n\n function _packData(\n\n LoanShiftData memory _loanShift,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[8] memory numData, address[8] memory addrData, uint8[3] memory enumData, bytes memory callData) {\n\n\n\n numData = [\n\n _loanShift.collAmount,\n\n _loanShift.debtAmount,\n\n _loanShift.id1,\n\n _loanShift.id2,\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n addrData = [\n\n _loanShift.addrLoan1,\n\n _loanShift.addrLoan2,\n\n _loanShift.debtAddr1,\n\n _loanShift.debtAddr2,\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper\n\n ];\n\n\n\n enumData = [\n\n uint8(_loanShift.fromProtocol),\n\n uint8(_loanShift.toProtocol),\n\n uint8(_loanShift.swapType)\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n\n\n}\n\ncontract ShifterRegistry is AdminAuth {\n\n mapping (string => address) public contractAddresses;\n\n bool public finalized;\n\n\n\n function changeContractAddr(string memory _contractName, address _protoAddr) public onlyOwner {\n\n require(!finalized);\n\n contractAddresses[_contractName] = _protoAddr;\n\n }\n\n\n\n function lock() public onlyOwner {\n\n finalized = true;\n\n }\n\n\n\n function getAddr(string memory _contractName) public view returns (address contractAddr) {\n\n contractAddr = contractAddresses[_contractName];\n\n\n\n require(contractAddr != address(0), \"No contract address registred\");\n\n }\n\n\n\n}\n\nlibrary Address {\n\n function isContract(address account) internal view returns (bool) {\n\n // According to EIP-1052, 0x0 is the value returned for not-yet created accounts\n\n // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned\n\n // for accounts without code, i.e. `keccak256('')`\n\n bytes32 codehash;\n\n bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly { codehash := extcodehash(account) }\n\n return (codehash != accountHash && codehash != 0x0);\n\n }\n\n\n\n function sendValue(address payable recipient, uint256 amount) internal {\n\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n\n (bool success, ) = recipient.call{ value: amount }(\"\");\n\n require(success, \"Address: unable to send value, recipient may have reverted\");\n\n }\n\n\n\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n\n return functionCall(target, data, \"Address: low-level call failed\");\n\n }\n\n\n\n function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n\n return _functionCallWithValue(target, data, 0, errorMessage);\n\n }\n\n\n\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n\n }\n\n\n\n function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\n\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n\n return _functionCallWithValue(target, data, value, errorMessage);\n\n }\n\n\n\n function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\n\n require(isContract(target), \"Address: call to non-contract\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls\n\n (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\n\n if (success) {\n\n return returndata;\n\n } else {\n\n // Look for revert reason and bubble it up if present\n\n if (returndata.length > 0) {\n\n // The easiest way to bubble the revert reason is using memory via assembly\n\n\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly {\n\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n\n }\n\n } else {\n\n revert(errorMessage);\n\n }\n\n }\n\n }\n\n}\n\ncontract BotRegistry is AdminAuth {\n\n\n\n mapping (address => bool) public botList;\n\n\n\n constructor() public {\n\n botList[0x776B4a13093e30B05781F97F6A4565B6aa8BE330] = true;\n\n\n\n botList[0xAED662abcC4FA3314985E67Ea993CAD064a7F5cF] = true;\n\n botList[0xa5d330F6619d6bF892A5B87D80272e1607b3e34D] = true;\n\n botList[0x5feB4DeE5150B589a7f567EA7CADa2759794A90A] = true;\n\n botList[0x7ca06417c1d6f480d3bB195B80692F95A6B66158] = true;\n\n }\n\n\n\n function setBot(address _botAddr, bool _state) public onlyOwner {\n\n botList[_botAddr] = _state;\n\n }\n\n\n\n}\n\ncontract DFSProxy is Auth {\n\n string public constant NAME = \"DFSProxy\";\n\n string public constant VERSION = \"v0.1\";\n\n\n\n mapping(address => mapping(uint => bool)) public nonces;\n\n\n\n // --- EIP712 niceties ---\n\n bytes32 public DOMAIN_SEPARATOR;\n\n bytes32 public constant PERMIT_TYPEHASH = keccak256(\"callProxy(address _user,address _proxy,address _contract,bytes _txData,uint256 _nonce)\");\n\n\n\n constructor(uint256 chainId_) public {\n\n DOMAIN_SEPARATOR = keccak256(abi.encode(\n\n keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"),\n\n keccak256(bytes(NAME)),\n\n keccak256(bytes(VERSION)),\n\n chainId_,\n\n address(this)\n\n ));\n\n }\n\n\n\n function callProxy(address _user, address _proxy, address _contract, bytes calldata _txData, uint256 _nonce,\n\n uint8 _v, bytes32 _r, bytes32 _s) external payable onlyAuthorized\n\n {\n\n bytes32 digest =\n\n keccak256(abi.encodePacked(\n\n \"\\x19\\x01\",\n\n DOMAIN_SEPARATOR,\n\n keccak256(abi.encode(PERMIT_TYPEHASH,\n\n _user,\n\n _proxy,\n\n _contract,\n\n _txData,\n\n _nonce))\n\n ));\n\n\n\n // user must be proxy owner\n\n require(DSProxyInterface(_proxy).owner() == _user);\n\n require(_user == ecrecover(digest, _v, _r, _s), \"DFSProxy/user-not-valid\");\n\n require(!nonces[_user][_nonce], \"DFSProxy/invalid-nonce\");\n\n \n\n nonces[_user][_nonce] = true;\n\n\n\n DSProxyInterface(_proxy).execute{value: msg.value}(_contract, _txData);\n\n }\n\n}\n\ncontract DebugInfo {\n\n\n\n mapping (string => uint) public uintValues;\n\n mapping (string => address) public addrValues;\n\n mapping (string => string) public stringValues;\n\n mapping (string => bytes32) public bytes32Values;\n\n\n\n function logUint(string memory _id, uint _value) public {\n\n uintValues[_id] = _value;\n\n }\n\n\n\n function logAddr(string memory _id, address _value) public {\n\n addrValues[_id] = _value;\n\n }\n\n\n\n function logString(string memory _id, string memory _value) public {\n\n stringValues[_id] = _value;\n\n }\n\n\n\n function logBytes32(string memory _id, bytes32 _value) public {\n\n bytes32Values[_id] = _value;\n\n }\n\n}\n\ncontract Discount {\n\n address public owner;\n\n mapping(address => CustomServiceFee) public serviceFees;\n\n\n\n uint256 constant MAX_SERVICE_FEE = 400;\n\n\n\n struct CustomServiceFee {\n\n bool active;\n\n uint256 amount;\n\n }\n\n\n\n constructor() public {\n\n owner = msg.sender;\n\n }\n\n\n\n function isCustomFeeSet(address _user) public view returns (bool) {\n\n return serviceFees[_user].active;\n\n }\n\n\n\n function getCustomServiceFee(address _user) public view returns (uint256) {\n\n return serviceFees[_user].amount;\n\n }\n\n\n\n function setServiceFee(address _user, uint256 _fee) public {\n\n require(msg.sender == owner, \"Only owner\");\n\n require(_fee >= MAX_SERVICE_FEE || _fee == 0);\n\n\n\n serviceFees[_user] = CustomServiceFee({active: true, amount: _fee});\n\n }\n\n\n\n function disableServiceFee(address _user) public {\n\n require(msg.sender == owner, \"Only owner\");\n\n\n\n serviceFees[_user] = CustomServiceFee({active: false, amount: 0});\n\n }\n\n}\n\ncontract DydxFlashLoanBase {\n\n using SafeMath for uint256;\n\n\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n function _getMarketIdFromTokenAddress(address token)\n\n internal\n\n view\n\n returns (uint256)\n\n {\n\n return 0;\n\n }\n\n\n\n function _getRepaymentAmountInternal(uint256 amount)\n\n internal\n\n view\n\n returns (uint256)\n\n {\n\n // Needs to be overcollateralize\n\n // Needs to provide +2 wei to be safe\n\n return amount.add(2);\n\n }\n\n\n\n function _getAccountInfo() internal view returns (Account.Info memory) {\n\n return Account.Info({owner: address(this), number: 1});\n\n }\n\n\n\n function _getWithdrawAction(uint marketId, uint256 amount, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Withdraw,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: amount\n\n }),\n\n primaryMarketId: marketId,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: \"\"\n\n });\n\n }\n\n\n\n function _getCallAction(bytes memory data, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Call,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: 0\n\n }),\n\n primaryMarketId: 0,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: data\n\n });\n\n }\n\n\n\n function _getDepositAction(uint marketId, uint256 amount, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Deposit,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: true,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: amount\n\n }),\n\n primaryMarketId: marketId,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: \"\"\n\n });\n\n }\n\n}\n\ncontract ExchangeDataParser {\n\n function decodeExchangeData(\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (address[4] memory, uint[4] memory, bytes memory) {\n\n return (\n\n [exchangeData.srcAddr, exchangeData.destAddr, exchangeData.exchangeAddr, exchangeData.wrapper],\n\n [exchangeData.srcAmount, exchangeData.destAmount, exchangeData.minPrice, exchangeData.price0x],\n\n exchangeData.callData\n\n );\n\n }\n\n\n\n function encodeExchangeData(\n\n address[4] memory exAddr, uint[4] memory exNum, bytes memory callData\n\n ) internal pure returns (SaverExchangeCore.ExchangeData memory) {\n\n return SaverExchangeCore.ExchangeData({\n\n srcAddr: exAddr[0],\n\n destAddr: exAddr[1],\n\n srcAmount: exNum[0],\n\n destAmount: exNum[1],\n\n minPrice: exNum[2],\n\n wrapper: exAddr[3],\n\n exchangeAddr: exAddr[2],\n\n callData: callData,\n\n price0x: exNum[3]\n\n });\n\n }\n\n}\n\ninterface IFlashLoanReceiver {\n\n function executeOperation(address _reserve, uint256 _amount, uint256 _fee, bytes calldata _params) external;\n\n}\n\nabstract contract ILendingPoolAddressesProvider {\n\n\n\n function getLendingPool() public view virtual returns (address);\n\n function setLendingPoolImpl(address _pool) public virtual;\n\n\n\n function getLendingPoolCore() public virtual view returns (address payable);\n\n function setLendingPoolCoreImpl(address _lendingPoolCore) public virtual;\n\n\n\n function getLendingPoolConfigurator() public virtual view returns (address);\n\n function setLendingPoolConfiguratorImpl(address _configurator) public virtual;\n\n\n\n function getLendingPoolDataProvider() public virtual view returns (address);\n\n function setLendingPoolDataProviderImpl(address _provider) public virtual;\n\n\n\n function getLendingPoolParametersProvider() public virtual view returns (address);\n\n function setLendingPoolParametersProviderImpl(address _parametersProvider) public virtual;\n\n\n\n function getTokenDistributor() public virtual view returns (address);\n\n function setTokenDistributor(address _tokenDistributor) public virtual;\n\n\n\n\n\n function getFeeProvider() public virtual view returns (address);\n\n function setFeeProviderImpl(address _feeProvider) public virtual;\n\n\n\n function getLendingPoolLiquidationManager() public virtual view returns (address);\n\n function setLendingPoolLiquidationManager(address _manager) public virtual;\n\n\n\n function getLendingPoolManager() public virtual view returns (address);\n\n function setLendingPoolManager(address _lendingPoolManager) public virtual;\n\n\n\n function getPriceOracle() public virtual view returns (address);\n\n function setPriceOracle(address _priceOracle) public virtual;\n\n\n\n function getLendingRateOracle() public view virtual returns (address);\n\n function setLendingRateOracle(address _lendingRateOracle) public virtual;\n\n}\n\nlibrary EthAddressLib {\n\n\n\n function ethAddress() internal pure returns(address) {\n\n return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n }\n\n}\n\nabstract contract FlashLoanReceiverBase is IFlashLoanReceiver {\n\n\n\n using SafeERC20 for ERC20;\n\n using SafeMath for uint256;\n\n\n\n ILendingPoolAddressesProvider public addressesProvider;\n\n\n\n constructor(ILendingPoolAddressesProvider _provider) public {\n\n addressesProvider = _provider;\n\n }\n\n\n\n receive () external virtual payable {}\n\n\n\n function transferFundsBackToPoolInternal(address _reserve, uint256 _amount) internal {\n\n\n\n address payable core = addressesProvider.getLendingPoolCore();\n\n\n\n transferInternal(core,_reserve, _amount);\n\n }\n\n\n\n function transferInternal(address payable _destination, address _reserve, uint256 _amount) internal {\n\n if(_reserve == EthAddressLib.ethAddress()) {\n\n //solium-disable-next-line\n\n _destination.call{value: _amount}(\"\");\n\n return;\n\n }\n\n\n\n ERC20(_reserve).safeTransfer(_destination, _amount);\n\n\n\n\n\n }\n\n\n\n function getBalanceInternal(address _target, address _reserve) internal view returns(uint256) {\n\n if(_reserve == EthAddressLib.ethAddress()) {\n\n\n\n return _target.balance;\n\n }\n\n\n\n return ERC20(_reserve).balanceOf(_target);\n\n\n\n }\n\n}\n\ncontract GasBurner {\n\n // solhint-disable-next-line const-name-snakecase\n\n GasTokenInterface public constant gasToken = GasTokenInterface(0x0000000000b3F879cb30FE243b4Dfee438691c04);\n\n\n\n modifier burnGas(uint _amount) {\n\n if (gasToken.balanceOf(address(this)) >= _amount) {\n\n gasToken.free(_amount);\n\n }\n\n\n\n _;\n\n }\n\n}\n\nlibrary SafeERC20 {\n\n using SafeMath for uint256;\n\n using Address for address;\n\n\n\n function safeTransfer(ERC20 token, address to, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n\n }\n\n\n\n function safeTransferFrom(ERC20 token, address from, address to, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n\n }\n\n\n\n /**\n\n * @dev Deprecated. This function has issues similar to the ones found in\n\n * {IERC20-approve}, and its usage is discouraged.\n\n */\n\n function safeApprove(ERC20 token, address spender, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n\n }\n\n\n\n function safeIncreaseAllowance(ERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).add(value);\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n function safeDecreaseAllowance(ERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).sub(value, \"SafeERC20: decreased allowance below zero\");\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n function _callOptionalReturn(ERC20 token, bytes memory data) private {\n\n\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n\n if (returndata.length > 0) { // Return data is optional\n\n // solhint-disable-next-line max-line-length\n\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n\n }\n\n }\n\n}\n\nlibrary SafeMath {\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n\n\n return c;\n\n }\n\n\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return sub(a, b, \"SafeMath: subtraction overflow\");\n\n }\n\n\n\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n\n\n return c;\n\n }\n\n\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n\n // benefit is lost if 'b' is also tested.\n\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n\n if (a == 0) {\n\n return 0;\n\n }\n\n\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n\n\n return c;\n\n }\n\n\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return div(a, b, \"SafeMath: division by zero\");\n\n }\n\n\n\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n\n\n return c;\n\n }\n\n\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return mod(a, b, \"SafeMath: modulo by zero\");\n\n }\n\n\n\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b != 0, errorMessage);\n\n return a % b;\n\n }\n\n}\n\ncontract ZrxAllowlist is AdminAuth {\n\n\n\n mapping (address => bool) public zrxAllowlist;\n\n mapping(address => bool) private nonPayableAddrs;\n\n\n\n constructor() public {\n\n zrxAllowlist[0x6958F5e95332D93D21af0D7B9Ca85B8212fEE0A5] = true;\n\n zrxAllowlist[0x61935CbDd02287B511119DDb11Aeb42F1593b7Ef] = true;\n\n zrxAllowlist[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;\n\n zrxAllowlist[0x080bf510FCbF18b91105470639e9561022937712] = true;\n\n\n\n nonPayableAddrs[0x080bf510FCbF18b91105470639e9561022937712] = true;\n\n }\n\n\n\n function setAllowlistAddr(address _zrxAddr, bool _state) public onlyOwner {\n\n zrxAllowlist[_zrxAddr] = _state;\n\n }\n\n\n\n function isZrxAddr(address _zrxAddr) public view returns (bool) {\n\n return zrxAllowlist[_zrxAddr];\n\n }\n\n\n\n function addNonPayableAddr(address _nonPayableAddr) public onlyOwner {\n\n\t\tnonPayableAddrs[_nonPayableAddr] = true;\n\n\t}\n\n\n\n\tfunction removeNonPayableAddr(address _nonPayableAddr) public onlyOwner {\n\n\t\tnonPayableAddrs[_nonPayableAddr] = false;\n\n\t}\n\n\n\n\tfunction isNonPayableAddr(address _addr) public view returns(bool) {\n\n\t\treturn nonPayableAddrs[_addr];\n\n\t}\n\n}\n\ncontract AaveBasicProxy is GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant AAVE_LENDING_POOL_ADDRESSES = 0x24a42fD28C976A61Df5D00D0599C34c4f90748c8;\n\n\n\n uint16 public constant AAVE_REFERRAL_CODE = 64;\n\n\n\n /// @notice User deposits tokens to the Aave protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n function deposit(address _tokenAddr, uint256 _amount) public burnGas(5) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint ethValue = _amount;\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n ethValue = 0;\n\n }\n\n\n\n ILendingPool(lendingPool).deposit{value: ethValue}(_tokenAddr, _amount, AAVE_REFERRAL_CODE);\n\n\n\n setUserUseReserveAsCollateralIfNeeded(_tokenAddr);\n\n }\n\n\n\n /// @notice User withdraws tokens from the Aave protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _aTokenAddr ATokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _wholeAmount If true we will take the whole amount on chain\n\n function withdraw(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeAmount) public burnGas(8) {\n\n uint256 amount = _wholeAmount ? ERC20(_aTokenAddr).balanceOf(address(this)) : _amount;\n\n\n\n IAToken(_aTokenAddr).redeem(amount);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @notice User borrows tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _type Send 1 for variable rate and 2 for fixed rate\n\n function borrow(address _tokenAddr, uint256 _amount, uint256 _type) public burnGas(8) {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).borrow(_tokenAddr, _amount, _type, AAVE_REFERRAL_CODE);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _aTokenAddr ATokens to be paybacked\n\n /// @param _amount Amount of tokens to be payed back\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeDebt) public burnGas(3) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint256 amount = _amount;\n\n\n\n (,uint256 borrowAmount,,,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, address(this));\n\n\n\n if (_wholeDebt) {\n\n amount = borrowAmount;\n\n }\n\n\n\n amount += originationFee;\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), amount);\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n }\n\n\n\n ILendingPool(lendingPool).repay{value: msg.value}(_tokenAddr, borrowAmount, payable(address(this)));\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _aTokenAddr ATokens to be paybacked\n\n /// @param _amount Amount of tokens to be payed back\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function paybackOnBehalf(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeDebt, address payable _onBehalf) public burnGas(3) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint256 amount = _amount;\n\n\n\n (,uint256 borrowAmount,,,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, _onBehalf);\n\n\n\n if (_wholeDebt) {\n\n amount = borrowAmount;\n\n }\n\n\n\n amount += originationFee;\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), amount);\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n }\n\n\n\n ILendingPool(lendingPool).repay{value: msg.value}(_tokenAddr, borrowAmount, _onBehalf);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n uint256 amount = _tokenAddr == ETH_ADDR ? address(this).balance : ERC20(_tokenAddr).balanceOf(address(this));\n\n\n\n if (amount > 0) {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, amount);\n\n } else {\n\n msg.sender.transfer(amount);\n\n }\n\n }\n\n }\n\n\n\n /// @notice Approves token contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _caller Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _caller) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_caller, 0);\n\n ERC20(_tokenAddr).safeApprove(_caller, uint256(-1));\n\n }\n\n }\n\n\n\n function setUserUseReserveAsCollateralIfNeeded(address _tokenAddr) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n (,,,,,,,,,bool collateralEnabled) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, address(this));\n\n\n\n if (!collateralEnabled) {\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_tokenAddr, true);\n\n }\n\n }\n\n\n\n function setUserUseReserveAsCollateral(address _tokenAddr, bool _true) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_tokenAddr, _true);\n\n }\n\n\n\n function swapBorrowRateMode(address _reserve) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).swapBorrowRateMode(_reserve);\n\n }\n\n}\n\ncontract AaveLoanInfo is AaveSafetyRatio {\n\n\n\n\tstruct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint256[] collAmounts;\n\n uint256[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address aTokenAddress;\n\n address underlyingTokenAddress;\n\n uint256 collateralFactor;\n\n uint256 price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n \taddress aTokenAddress;\n\n address underlyingTokenAddress;\n\n uint256 supplyRate;\n\n uint256 borrowRate;\n\n uint256 totalSupply;\n\n uint256 availableLiquidity;\n\n uint256 totalBorrow;\n\n uint256 collateralFactor;\n\n uint256 price;\n\n bool usageAsCollateralEnabled;\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint256) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches Aave prices for tokens\n\n /// @param _tokens Arr. of tokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _tokens) public view returns (uint256[] memory prices) {\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n prices = new uint[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; ++i) {\n\n prices[i] = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches Aave collateral factors for tokens\n\n /// @param _tokens Arr. of tokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _tokens) public view returns (uint256[] memory collFactors) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n collFactors = new uint256[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; ++i) {\n\n \t(,collFactors[i],,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_tokens[i]);\n\n }\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _tokens) public view returns (uint256[] memory balances, uint256[] memory borrows, bool[] memory enabledAsCollateral) {\n\n \taddress lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n balances = new uint256[](_tokens.length);\n\n borrows = new uint256[](_tokens.length);\n\n enabledAsCollateral = new bool[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; i++) {\n\n address asset = _tokens[i];\n\n\n\n (balances[i], borrows[i],,,,,,,,enabledAsCollateral[i]) = ILendingPool(lendingPoolAddress).getUserReserveData(asset, _user);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for an aave user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint256[] memory ratios) {\n\n ratios = new uint256[](_users.length);\n\n\n\n for (uint256 i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about reserves\n\n /// @param _tokenAddresses Array of tokens addresses\n\n /// @return tokens Array of reserves infomartion\n\n function getTokensInfo(address[] memory _tokenAddresses) public view returns(TokenInfo[] memory tokens) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n \taddress priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n tokens = new TokenInfo[](_tokenAddresses.length);\n\n\n\n for (uint256 i = 0; i < _tokenAddresses.length; ++i) {\n\n \t(,uint256 ltv,,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_tokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n aTokenAddress: ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(_tokenAddresses[i]),\n\n underlyingTokenAddress: _tokenAddresses[i],\n\n collateralFactor: ltv,\n\n price: IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about reserves\n\n /// @param _tokenAddresses Array of token addresses\n\n /// @return tokens Array of reserves infomartion\n\n function getFullTokensInfo(address[] memory _tokenAddresses) public view returns(TokenInfoFull[] memory tokens) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n \taddress priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n tokens = new TokenInfoFull[](_tokenAddresses.length);\n\n\n\n for (uint256 i = 0; i < _tokenAddresses.length; ++i) {\n\n \t(,uint256 ltv,,bool usageAsCollateralEnabled) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_tokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n \taTokenAddress: ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(_tokenAddresses[i]),\n\n underlyingTokenAddress: _tokenAddresses[i],\n\n supplyRate: ILendingPool(lendingPoolCoreAddress).getReserveCurrentLiquidityRate(_tokenAddresses[i]),\n\n borrowRate: ILendingPool(lendingPoolCoreAddress).getReserveCurrentVariableBorrowRate(_tokenAddresses[i]),\n\n totalSupply: ILendingPool(lendingPoolCoreAddress).getReserveTotalLiquidity(_tokenAddresses[i]),\n\n availableLiquidity: ILendingPool(lendingPoolCoreAddress).getReserveAvailableLiquidity(_tokenAddresses[i]),\n\n totalBorrow: ILendingPool(lendingPoolCoreAddress).getReserveTotalBorrowsVariable(_tokenAddresses[i]),\n\n collateralFactor: ltv,\n\n price: IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddresses[i]),\n\n usageAsCollateralEnabled: usageAsCollateralEnabled\n\n });\n\n }\n\n }\n\n\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in ether\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n address[] memory reserves = ILendingPool(lendingPoolAddress).getReserves();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](reserves.length),\n\n borrowAddr: new address[](reserves.length),\n\n collAmounts: new uint[](reserves.length),\n\n borrowAmounts: new uint[](reserves.length)\n\n });\n\n\n\n uint64 collPos = 0;\n\n uint64 borrowPos = 0;\n\n\n\n for (uint64 i = 0; i < reserves.length; i++) {\n\n address reserve = reserves[i];\n\n\n\n (uint256 aTokenBalance, uint256 borrowBalance,,,,,,,,) = ILendingPool(lendingPoolAddress).getUserReserveData(reserve, _user);\n\n uint256 price = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(reserves[i]);\n\n\n\n if (aTokenBalance > 0) {\n\n \tuint256 userTokenBalanceEth = wmul(aTokenBalance, price) * (10 ** (18 - _getDecimals(reserve)));\n\n \tdata.collAddr[collPos] = reserve;\n\n data.collAmounts[collPos] = userTokenBalanceEth;\n\n collPos++;\n\n \t}\n\n\n\n // Sum up debt in Eth\n\n if (borrowBalance > 0) {\n\n \tuint256 userBorrowBalanceEth = wmul(borrowBalance, price) * (10 ** (18 - _getDecimals(reserve)));\n\n data.borrowAddr[borrowPos] = reserve;\n\n data.borrowAmounts[borrowPos] = userBorrowBalanceEth;\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in ether\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n}\n\ncontract AaveMonitor is AdminAuth, DSMath, AaveSafetyRatio, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n enum Method { Boost, Repay }\n\n\n\n uint public REPAY_GAS_TOKEN = 19;\n\n uint public BOOST_GAS_TOKEN = 19;\n\n\n\n uint public MAX_GAS_PRICE = 200000000000; // 200 gwei\n\n\n\n uint public REPAY_GAS_COST = 2500000;\n\n uint public BOOST_GAS_COST = 2500000;\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n AaveMonitorProxy public aaveMonitorProxy;\n\n AaveSubscriptions public subscriptionsContract;\n\n address public aaveSaverProxy;\n\n\n\n DefisaverLogger public logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n /// @param _aaveMonitorProxy Proxy contracts that actually is authorized to call DSProxy\n\n /// @param _subscriptions Subscriptions contract for Aave positions\n\n /// @param _aaveSaverProxy Contract that actually performs Repay/Boost\n\n constructor(address _aaveMonitorProxy, address _subscriptions, address _aaveSaverProxy) public {\n\n aaveMonitorProxy = AaveMonitorProxy(_aaveMonitorProxy);\n\n subscriptionsContract = AaveSubscriptions(_subscriptions);\n\n aaveSaverProxy = _aaveSaverProxy;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _user The actual address that owns the Aave position\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address _user\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n aaveMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n aaveSaverProxy,\n\n abi.encodeWithSignature(\n\n \"repay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\",\n\n _exData,\n\n gasCost\n\n )\n\n );\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticAaveRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _user The actual address that owns the Aave position\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address _user\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n aaveMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n aaveSaverProxy,\n\n abi.encodeWithSignature(\n\n \"boost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\",\n\n _exData,\n\n gasCost\n\n )\n\n );\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticAaveBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by AaveMonitor to enforce the min/max check\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Boolean if it can be called and the ratio\n\n function canCall(Method _method, address _user) public view returns(bool, uint) {\n\n bool subscribed = subscriptionsContract.isSubscribed(_user);\n\n AaveSubscriptions.AaveHolder memory holder = subscriptionsContract.getHolder(_user);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Boolean if the recent action preformed correctly and the ratio\n\n function ratioGoodAfter(Method _method, address _user) public view returns(bool, uint) {\n\n AaveSubscriptions.AaveHolder memory holder;\n\n\n\n holder= subscriptionsContract.getHolder(_user);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change max gas price\n\n /// @param _maxGasPrice New max gas price\n\n function changeMaxGasPrice(uint _maxGasPrice) public onlyOwner {\n\n require(_maxGasPrice < 500000000000);\n\n\n\n MAX_GAS_PRICE = _maxGasPrice;\n\n }\n\n\n\n /// @notice Allows owner to change gas token amount\n\n /// @param _gasTokenAmount New gas token amount\n\n /// @param _repay true if repay gas token, false if boost gas token\n\n function changeGasTokenAmount(uint _gasTokenAmount, bool _repay) public onlyOwner {\n\n if (_repay) {\n\n REPAY_GAS_TOKEN = _gasTokenAmount;\n\n } else {\n\n BOOST_GAS_TOKEN = _gasTokenAmount;\n\n }\n\n }\n\n}\n\ncontract AaveMonitorProxy is AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint public CHANGE_PERIOD;\n\n address public monitor;\n\n address public newMonitor;\n\n address public lastMonitor;\n\n uint public changeRequestedTimestamp;\n\n\n\n mapping(address => bool) public allowed;\n\n\n\n event MonitorChangeInitiated(address oldMonitor, address newMonitor);\n\n event MonitorChangeCanceled();\n\n event MonitorChangeFinished(address monitor);\n\n event MonitorChangeReverted(address monitor);\n\n\n\n // if someone who is allowed become malicious, owner can't be changed\n\n modifier onlyAllowed() {\n\n require(allowed[msg.sender] || msg.sender == owner);\n\n _;\n\n }\n\n\n\n modifier onlyMonitor() {\n\n require (msg.sender == monitor);\n\n _;\n\n }\n\n\n\n constructor(uint _changePeriod) public {\n\n CHANGE_PERIOD = _changePeriod * 1 days;\n\n }\n\n\n\n /// @notice Only monitor contract is able to call execute on users proxy\n\n /// @param _owner Address of cdp owner (users DSProxy address)\n\n /// @param _aaveSaverProxy Address of AaveSaverProxy\n\n /// @param _data Data to send to AaveSaverProxy\n\n function callExecute(address _owner, address _aaveSaverProxy, bytes memory _data) public payable onlyMonitor {\n\n // execute reverts if calling specific method fails\n\n DSProxyInterface(_owner).execute{value: msg.value}(_aaveSaverProxy, _data);\n\n\n\n // return if anything left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Allowed users are able to set Monitor contract without any waiting period first time\n\n /// @param _monitor Address of Monitor contract\n\n function setMonitor(address _monitor) public onlyAllowed {\n\n require(monitor == address(0));\n\n monitor = _monitor;\n\n }\n\n\n\n /// @notice Allowed users are able to start procedure for changing monitor\n\n /// @dev after CHANGE_PERIOD needs to call confirmNewMonitor to actually make a change\n\n /// @param _newMonitor address of new monitor\n\n function changeMonitor(address _newMonitor) public onlyAllowed {\n\n require(changeRequestedTimestamp == 0);\n\n\n\n changeRequestedTimestamp = now;\n\n lastMonitor = monitor;\n\n newMonitor = _newMonitor;\n\n\n\n emit MonitorChangeInitiated(lastMonitor, newMonitor);\n\n }\n\n\n\n /// @notice At any point allowed users are able to cancel monitor change\n\n function cancelMonitorChange() public onlyAllowed {\n\n require(changeRequestedTimestamp > 0);\n\n\n\n changeRequestedTimestamp = 0;\n\n newMonitor = address(0);\n\n\n\n emit MonitorChangeCanceled();\n\n }\n\n\n\n /// @notice Anyone is able to confirm new monitor after CHANGE_PERIOD if process is started\n\n function confirmNewMonitor() public onlyAllowed {\n\n require((changeRequestedTimestamp + CHANGE_PERIOD) < now);\n\n require(changeRequestedTimestamp != 0);\n\n require(newMonitor != address(0));\n\n\n\n monitor = newMonitor;\n\n newMonitor = address(0);\n\n changeRequestedTimestamp = 0;\n\n\n\n emit MonitorChangeFinished(monitor);\n\n }\n\n\n\n /// @notice Its possible to revert monitor to last used monitor\n\n function revertMonitor() public onlyAllowed {\n\n require(lastMonitor != address(0));\n\n\n\n monitor = lastMonitor;\n\n\n\n emit MonitorChangeReverted(monitor);\n\n }\n\n\n\n\n\n /// @notice Allowed users are able to add new allowed user\n\n /// @param _user Address of user that will be allowed\n\n function addAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = true;\n\n }\n\n\n\n /// @notice Allowed users are able to remove allowed user\n\n /// @dev owner is always allowed even if someone tries to remove it from allowed mapping\n\n /// @param _user Address of allowed user\n\n function removeAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = false;\n\n }\n\n\n\n function setChangePeriod(uint _periodInDays) public onlyAllowed {\n\n require(_periodInDays * 1 days > CHANGE_PERIOD);\n\n\n\n CHANGE_PERIOD = _periodInDays * 1 days;\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n /// @param _token address of token to withdraw balance\n\n function withdrawToken(address _token) public onlyOwner {\n\n uint balance = ERC20(_token).balanceOf(address(this));\n\n ERC20(_token).safeTransfer(msg.sender, balance);\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n function withdrawEth() public onlyOwner {\n\n uint balance = address(this).balance;\n\n msg.sender.transfer(balance);\n\n }\n\n}\n\ncontract AaveSubscriptions is AdminAuth {\n\n\n\n struct AaveHolder {\n\n address user;\n\n uint128 minRatio;\n\n uint128 maxRatio;\n\n uint128 optimalRatioBoost;\n\n uint128 optimalRatioRepay;\n\n bool boostEnabled;\n\n }\n\n\n\n struct SubPosition {\n\n uint arrPos;\n\n bool subscribed;\n\n }\n\n\n\n AaveHolder[] public subscribers;\n\n mapping (address => SubPosition) public subscribersPos;\n\n\n\n uint public changeIndex;\n\n\n\n event Subscribed(address indexed user);\n\n event Unsubscribed(address indexed user);\n\n event Updated(address indexed user);\n\n event ParamUpdates(address indexed user, uint128, uint128, uint128, uint128, bool);\n\n\n\n /// @dev Called by the DSProxy contract which owns the Aave position\n\n /// @notice Adds the users Aave poistion in the list of subscriptions so it can be monitored\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalBoost Ratio amount which boost should target\n\n /// @param _optimalRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) external {\n\n\n\n // if boost is not enabled, set max ratio to max uint\n\n uint128 localMaxRatio = _boostEnabled ? _maxRatio : uint128(-1);\n\n require(checkParams(_minRatio, localMaxRatio), \"Must be correct params\");\n\n\n\n SubPosition storage subInfo = subscribersPos[msg.sender];\n\n\n\n AaveHolder memory subscription = AaveHolder({\n\n minRatio: _minRatio,\n\n maxRatio: localMaxRatio,\n\n optimalRatioBoost: _optimalBoost,\n\n optimalRatioRepay: _optimalRepay,\n\n user: msg.sender,\n\n boostEnabled: _boostEnabled\n\n });\n\n\n\n changeIndex++;\n\n\n\n if (subInfo.subscribed) {\n\n subscribers[subInfo.arrPos] = subscription;\n\n\n\n emit Updated(msg.sender);\n\n emit ParamUpdates(msg.sender, _minRatio, localMaxRatio, _optimalBoost, _optimalRepay, _boostEnabled);\n\n } else {\n\n subscribers.push(subscription);\n\n\n\n subInfo.arrPos = subscribers.length - 1;\n\n subInfo.subscribed = true;\n\n\n\n emit Subscribed(msg.sender);\n\n }\n\n }\n\n\n\n /// @notice Called by the users DSProxy\n\n /// @dev Owner who subscribed cancels his subscription\n\n function unsubscribe() external {\n\n _unsubscribe(msg.sender);\n\n }\n\n\n\n /// @dev Checks limit if minRatio is bigger than max\n\n /// @param _minRatio Minimum ratio, bellow which repay can be triggered\n\n /// @param _maxRatio Maximum ratio, over which boost can be triggered\n\n /// @return Returns bool if the params are correct\n\n function checkParams(uint128 _minRatio, uint128 _maxRatio) internal pure returns (bool) {\n\n\n\n if (_minRatio > _maxRatio) {\n\n return false;\n\n }\n\n\n\n return true;\n\n }\n\n\n\n /// @dev Internal method to remove a subscriber from the list\n\n /// @param _user The actual address that owns the Aave position\n\n function _unsubscribe(address _user) internal {\n\n require(subscribers.length > 0, \"Must have subscribers in the list\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n require(subInfo.subscribed, \"Must first be subscribed\");\n\n\n\n address lastOwner = subscribers[subscribers.length - 1].user;\n\n\n\n SubPosition storage subInfo2 = subscribersPos[lastOwner];\n\n subInfo2.arrPos = subInfo.arrPos;\n\n\n\n subscribers[subInfo.arrPos] = subscribers[subscribers.length - 1];\n\n subscribers.pop(); // remove last element and reduce arr length\n\n\n\n changeIndex++;\n\n subInfo.subscribed = false;\n\n subInfo.arrPos = 0;\n\n\n\n emit Unsubscribed(msg.sender);\n\n }\n\n\n\n /// @dev Checks if the user is subscribed\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return If the user is subscribed\n\n function isSubscribed(address _user) public view returns (bool) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subInfo.subscribed;\n\n }\n\n\n\n /// @dev Returns subscribtion information about a user\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Subscription information about the user if exists\n\n function getHolder(address _user) public view returns (AaveHolder memory) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subscribers[subInfo.arrPos];\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n /// @return List of all subscribers\n\n function getSubscribers() public view returns (AaveHolder[] memory) {\n\n return subscribers;\n\n }\n\n\n\n /// @notice Helper method for the frontend, returns all the subscribed CDPs paginated\n\n /// @param _page What page of subscribers you want\n\n /// @param _perPage Number of entries per page\n\n /// @return List of all subscribers for that page\n\n function getSubscribersByPage(uint _page, uint _perPage) public view returns (AaveHolder[] memory) {\n\n AaveHolder[] memory holders = new AaveHolder[](_perPage);\n\n\n\n uint start = _page * _perPage;\n\n uint end = start + _perPage;\n\n\n\n end = (end > holders.length) ? holders.length : end;\n\n\n\n uint count = 0;\n\n for (uint i = start; i < end; i++) {\n\n holders[count] = subscribers[i];\n\n count++;\n\n }\n\n\n\n return holders;\n\n }\n\n\n\n ////////////// ADMIN METHODS ///////////////////\n\n\n\n /// @notice Admin function to unsubscribe a position\n\n /// @param _user The actual address that owns the Aave position\n\n function unsubscribeByAdmin(address _user) public onlyOwner {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n if (subInfo.subscribed) {\n\n _unsubscribe(_user);\n\n }\n\n }\n\n}\n\ncontract AaveSubscriptionsProxy is ProxyPermission {\n\n\n\n address public constant AAVE_SUBSCRIPTION_ADDRESS = 0xe08ff7A2BADb634F0b581E675E6B3e583De086FC;\n\n address public constant AAVE_MONITOR_PROXY = 0xfA560Dba3a8D0B197cA9505A2B98120DD89209AC;\n\n\n\n /// @notice Calls subscription contract and creates a DSGuard if non existent\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n givePermission(AAVE_MONITOR_PROXY);\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).subscribe(\n\n _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls subscription contract and updated existing parameters\n\n /// @dev If subscription is non existent this will create one\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function update(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).subscribe(_minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls the subscription contract to unsubscribe the caller\n\n function unsubscribe() public {\n\n removePermission(AAVE_MONITOR_PROXY);\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).unsubscribe();\n\n }\n\n}\n\ncontract AaveImport is AaveHelper, AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant BASIC_PROXY = 0xd6d0E28DCAB2D0ffA55Ed6A2A685f2262B7e736E;\n\n address public constant AETH_ADDRESS = 0x3a3A65aAb0dd2A17E3F1947bA16138cd37d08c04;\n\n\n\n function callFunction(\n\n address sender,\n\n Account.Info memory account,\n\n bytes memory data\n\n ) public {\n\n\n\n (\n\n address collateralToken,\n\n address borrowToken,\n\n uint256 ethAmount,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(data, (address,address,uint256,address,address));\n\n\n\n // withdraw eth\n\n TokenInterface(WETH_ADDRESS).withdraw(ethAmount);\n\n\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n address aCollateralToken = ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(collateralToken);\n\n address aBorrowToken = ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(borrowToken);\n\n\n\n // deposit eth on behalf of proxy\n\n DSProxy(payable(proxy)).execute{value: ethAmount}(BASIC_PROXY, abi.encodeWithSignature(\"deposit(address,uint256)\", ETH_ADDR, ethAmount));\n\n // borrow needed amount to repay users borrow\n\n (,uint256 borrowAmount,,uint256 borrowRateMode,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(borrowToken, user);\n\n borrowAmount += originationFee;\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"borrow(address,uint256,uint256)\", borrowToken, borrowAmount, borrowRateMode));\n\n // payback on behalf of user\n\n ERC20(borrowToken).safeApprove(proxy, borrowAmount);\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"paybackOnBehalf(address,address,uint256,bool,address)\", borrowToken, aBorrowToken, 0, true, user));\n\n // pull tokens from user to proxy\n\n ERC20(aCollateralToken).safeTransferFrom(user, proxy, ERC20(aCollateralToken).balanceOf(user));\n\n\n\n // enable as collateral\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"setUserUseReserveAsCollateralIfNeeded(address)\", collateralToken));\n\n\n\n // withdraw deposited eth\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"withdraw(address,address,uint256,bool)\", ETH_ADDR, AETH_ADDRESS, ethAmount, false));\n\n\n\n // deposit eth, get weth and return to sender\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n ERC20(WETH_ADDRESS).safeTransfer(proxy, ethAmount+2);\n\n }\n\n\n\n /// @dev if contract receive eth, convert it to WETH\n\n receive() external payable {\n\n // deposit eth and get weth \n\n if (msg.sender == owner) {\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n }\n\n }\n\n}\n\ncontract AaveImportTaker is DydxFlashLoanBase, ProxyPermission {\n\n\n\n address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address payable public constant AAVE_IMPORT = 0x2f8ADA783E0696F610e5637CF873B967f47dF2E3;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must send 2 wei with this transaction\n\n /// @dev User must approve AaveImport to pull _aCollateralToken\n\n /// @param _collateralToken Collateral token we are moving to DSProxy\n\n /// @param _borrowToken Borrow token we are moving to DSProxy\n\n /// @param _ethAmount ETH amount that needs to be pulled from dydx\n\n function importLoan(address _collateralToken, address _borrowToken, uint _ethAmount) public {\n\n ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n\n\n // Get marketId from token address\n\n uint256 marketId = _getMarketIdFromTokenAddress(WETH_ADDR);\n\n\n\n // Calculate repay amount (_amount + (2 wei))\n\n // Approve transfer from\n\n uint256 repayAmount = _getRepaymentAmountInternal(_ethAmount);\n\n ERC20(WETH_ADDR).approve(SOLO_MARGIN_ADDRESS, repayAmount);\n\n\n\n Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);\n\n\n\n operations[0] = _getWithdrawAction(marketId, _ethAmount, AAVE_IMPORT);\n\n operations[1] = _getCallAction(\n\n abi.encode(_collateralToken, _borrowToken, _ethAmount, msg.sender, address(this)),\n\n AAVE_IMPORT\n\n );\n\n operations[2] = _getDepositAction(marketId, repayAmount, address(this));\n\n\n\n Account.Info[] memory accountInfos = new Account.Info[](1);\n\n accountInfos[0] = _getAccountInfo();\n\n\n\n givePermission(AAVE_IMPORT);\n\n solo.operate(accountInfos, operations);\n\n removePermission(AAVE_IMPORT);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveImport\", abi.encode(_collateralToken, _borrowToken));\n\n }\n\n}\n\ncontract CompoundBasicProxy is GasBurner {\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice User deposits tokens to the Compound protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _cTokenAddr CTokens to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n /// @param _inMarket True if the token is already in market for that address\n\n function deposit(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(5) payable {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: msg.value}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice User withdraws tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _cTokenAddr CTokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _isCAmount If true _amount is cTokens if falls _amount is underlying tokens\n\n function withdraw(address _tokenAddr, address _cTokenAddr, uint _amount, bool _isCAmount) public burnGas(5) {\n\n\n\n if (_isCAmount) {\n\n require(CTokenInterface(_cTokenAddr).redeem(_amount) == 0);\n\n } else {\n\n require(CTokenInterface(_cTokenAddr).redeemUnderlying(_amount) == 0);\n\n }\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n }\n\n\n\n /// @notice User borrows tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _cTokenAddr CTokens to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _inMarket True if the token is already in market for that address\n\n function borrow(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(8) {\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _cTokenAddr CTokens to be paybacked\n\n /// @param _amount Amount of tokens to be payedback\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _cTokenAddr, uint _amount, bool _wholeDebt) public burnGas(5) payable {\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (_wholeDebt) {\n\n _amount = CTokenInterface(_cTokenAddr).borrowBalanceCurrent(address(this));\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n\n\n require(CTokenInterface(_cTokenAddr).repayBorrow(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).repayBorrow{value: msg.value}();\n\n msg.sender.transfer(address(this).balance); // send back the extra eth\n\n }\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Enters the Compound market so it can be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Exits the Compound market so it can't be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function exitMarket(address _cTokenAddr) public {\n\n ComptrollerInterface(COMPTROLLER_ADDR).exitMarket(_cTokenAddr);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, 0);\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n}\n\ncontract CompoundSafetyRatio is Exponential, DSMath {\n\n // solhint-disable-next-line const-name-snakecase\n\n ComptrollerInterface public constant comp = ComptrollerInterface(0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B);\n\n\n\n /// @notice Calcualted the ratio of debt / adjusted collateral\n\n /// @param _user Address of the user\n\n function getSafetyRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n\n\n uint sumCollateral = 0;\n\n uint sumBorrow = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in Usd\n\n if (cTokenBalance != 0) {\n\n\n\n (, uint collFactorMantissa) = comp.markets(address(asset));\n\n\n\n Exp memory collateralFactor = Exp({mantissa: collFactorMantissa});\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n\n\n (, Exp memory tokensToUsd) = mulExp3(collateralFactor, exchangeRate, oraclePrice);\n\n\n\n (, sumCollateral) = mulScalarTruncateAddUInt(tokensToUsd, cTokenBalance, sumCollateral);\n\n }\n\n\n\n // Sum up debt in Usd\n\n if (borrowBalance != 0) {\n\n (, sumBorrow) = mulScalarTruncateAddUInt(oraclePrice, borrowBalance, sumBorrow);\n\n }\n\n }\n\n\n\n if (sumBorrow == 0) return uint(-1);\n\n\n\n uint borrowPowerUsed = (sumBorrow * 10**18) / sumCollateral;\n\n return wdiv(1e18, borrowPowerUsed);\n\n }\n\n}\n\ncontract CompoundMonitor is AdminAuth, DSMath, CompoundSafetyRatio, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n enum Method { Boost, Repay }\n\n\n\n uint public REPAY_GAS_TOKEN = 20;\n\n uint public BOOST_GAS_TOKEN = 20;\n\n\n\n uint constant public MAX_GAS_PRICE = 500000000000; // 500 gwei\n\n\n\n uint public REPAY_GAS_COST = 2000000;\n\n uint public BOOST_GAS_COST = 2000000;\n\n\n\n address public constant GAS_TOKEN_INTERFACE_ADDRESS = 0x0000000000b3F879cb30FE243b4Dfee438691c04;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n CompoundMonitorProxy public compoundMonitorProxy;\n\n CompoundSubscriptions public subscriptionsContract;\n\n address public compoundFlashLoanTakerAddress;\n\n\n\n DefisaverLogger public logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n /// @param _compoundMonitorProxy Proxy contracts that actually is authorized to call DSProxy\n\n /// @param _subscriptions Subscriptions contract for Compound positions\n\n /// @param _compoundFlashLoanTaker Contract that actually performs Repay/Boost\n\n constructor(address _compoundMonitorProxy, address _subscriptions, address _compoundFlashLoanTaker) public {\n\n compoundMonitorProxy = CompoundMonitorProxy(_compoundMonitorProxy);\n\n subscriptionsContract = CompoundSubscriptions(_subscriptions);\n\n compoundFlashLoanTakerAddress = _compoundFlashLoanTaker;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _user The actual address that owns the Compound position\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n address _user\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n compoundMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n compoundFlashLoanTakerAddress,\n\n abi.encodeWithSignature(\n\n \"repayWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256)\",\n\n _exData,\n\n _cAddresses,\n\n gasCost\n\n )\n\n );\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticCompoundRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _user The actual address that owns the Compound position\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n address _user\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n compoundMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n compoundFlashLoanTakerAddress,\n\n abi.encodeWithSignature(\n\n \"boostWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256)\",\n\n _exData,\n\n _cAddresses,\n\n gasCost\n\n )\n\n );\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticCompoundBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by MCDMonitor to enforce the min/max check\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return Boolean if it can be called and the ratio\n\n function canCall(Method _method, address _user) public view returns(bool, uint) {\n\n bool subscribed = subscriptionsContract.isSubscribed(_user);\n\n CompoundSubscriptions.CompoundHolder memory holder = subscriptionsContract.getHolder(_user);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return Boolean if the recent action preformed correctly and the ratio\n\n function ratioGoodAfter(Method _method, address _user) public view returns(bool, uint) {\n\n CompoundSubscriptions.CompoundHolder memory holder;\n\n\n\n holder= subscriptionsContract.getHolder(_user);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice If any tokens gets stuck in the contract owner can withdraw it\n\n /// @param _tokenAddress Address of the ERC20 token\n\n /// @param _to Address of the receiver\n\n /// @param _amount The amount to be sent\n\n function transferERC20(address _tokenAddress, address _to, uint _amount) public onlyOwner {\n\n ERC20(_tokenAddress).safeTransfer(_to, _amount);\n\n }\n\n\n\n /// @notice If any Eth gets stuck in the contract owner can withdraw it\n\n /// @param _to Address of the receiver\n\n /// @param _amount The amount to be sent\n\n function transferEth(address payable _to, uint _amount) public onlyOwner {\n\n _to.transfer(_amount);\n\n }\n\n}\n\ncontract CompoundSaverHelper is DSMath, Exponential {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;\n\n address public constant COMPTROLLER = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n address public constant COMPOUND_LOGGER = 0x3DD0CDf5fFA28C6847B4B276e2fD256046a44bb7;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n /// @notice Helper method to payback the Compound debt\n\n /// @dev If amount is bigger it will repay the whole debt and send the extra to the _user\n\n /// @param _amount Amount of tokens we want to repay\n\n /// @param _cBorrowToken Ctoken address we are repaying\n\n /// @param _borrowToken Token address we are repaying\n\n /// @param _user Owner of the compound position we are paying back\n\n function paybackDebt(uint _amount, address _cBorrowToken, address _borrowToken, address payable _user) internal {\n\n uint wholeDebt = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(address(this));\n\n\n\n if (_amount > wholeDebt) {\n\n if (_borrowToken == ETH_ADDRESS) {\n\n _user.transfer((_amount - wholeDebt));\n\n } else {\n\n ERC20(_borrowToken).safeTransfer(_user, (_amount - wholeDebt));\n\n }\n\n\n\n _amount = wholeDebt;\n\n }\n\n\n\n approveCToken(_borrowToken, _cBorrowToken);\n\n\n\n if (_borrowToken == ETH_ADDRESS) {\n\n CEtherInterface(_cBorrowToken).repayBorrow{value: _amount}();\n\n } else {\n\n require(CTokenInterface(_cBorrowToken).repayBorrow(_amount) == 0);\n\n }\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getFee(uint _amount, address _user, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(_user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(_user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint usdTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(CETH_ADDRESS);\n\n\n\n uint tokenPriceInEth = wdiv(usdTokenPrice, ethPrice);\n\n\n\n _gasCost = wdiv(_gasCost, tokenPriceInEth);\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Calculates the gas cost of transaction and send it to wallet\n\n /// @param _amount Amount that is converted\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getGasCost(uint _amount, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint usdTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(CETH_ADDRESS);\n\n\n\n uint tokenPriceInEth = wdiv(usdTokenPrice, ethPrice);\n\n\n\n feeAmount = wdiv(_gasCost, tokenPriceInEth);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Enters the market for the collatera and borrow tokens\n\n /// @param _cTokenAddrColl Collateral address we are entering the market in\n\n /// @param _cTokenAddrBorrow Borrow address we are entering the market in\n\n function enterMarket(address _cTokenAddrColl, address _cTokenAddrBorrow) internal {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cTokenAddrColl;\n\n markets[1] = _cTokenAddrBorrow;\n\n\n\n ComptrollerInterface(COMPTROLLER).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveCToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, 0);\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n\n\n /// @notice Returns the owner of the DSProxy that called the contract\n\n function getUserAddress() internal view returns (address) {\n\n DSProxy proxy = DSProxy(uint160(address(this)));\n\n\n\n return proxy.owner();\n\n }\n\n\n\n /// @notice Returns the maximum amount of collateral available to withdraw\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cCollAddress Collateral we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. collateral amount in that token\n\n function getMaxCollateral(address _cCollAddress, address _account) public returns (uint) {\n\n (, uint liquidityInUsd, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n uint usersBalance = CTokenInterface(_cCollAddress).balanceOfUnderlying(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n if (liquidityInUsd == 0) return usersBalance;\n\n\n\n CTokenInterface(_cCollAddress).accrueInterest();\n\n\n\n (, uint collFactorMantissa) = ComptrollerInterface(COMPTROLLER).markets(_cCollAddress);\n\n Exp memory collateralFactor = Exp({mantissa: collFactorMantissa});\n\n\n\n (, uint tokensToUsd) = divScalarByExpTruncate(liquidityInUsd, collateralFactor);\n\n\n\n uint usdPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cCollAddress);\n\n uint liqInToken = wdiv(tokensToUsd, usdPrice);\n\n\n\n if (liqInToken > usersBalance) return usersBalance;\n\n\n\n return sub(liqInToken, (liqInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n\n\n /// @notice Returns the maximum amount of borrow amount available\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cBorrowAddress Borrow token we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. borrow amount in that token\n\n function getMaxBorrow(address _cBorrowAddress, address _account) public returns (uint) {\n\n (, uint liquidityInUsd, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n CTokenInterface(_cBorrowAddress).accrueInterest();\n\n\n\n uint usdPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cBorrowAddress);\n\n uint liquidityInToken = wdiv(liquidityInUsd, usdPrice);\n\n\n\n return sub(liquidityInToken, (liquidityInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n}\n\ncontract CompoundImportFlashLoan is FlashLoanReceiverBase {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant COMPOUND_BORROW_PROXY = 0xb7EDC39bE76107e2Cc645f0f6a3D164f5e173Ee2;\n\n\n\n address public owner;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (\n\n address cCollateralToken,\n\n address cBorrowToken,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(_params, (address,address,address,address));\n\n\n\n // approve FL tokens so we can repay them\n\n ERC20(_reserve).safeApprove(cBorrowToken, 0);\n\n ERC20(_reserve).safeApprove(cBorrowToken, uint(-1));\n\n\n\n // repay compound debt\n\n require(CTokenInterface(cBorrowToken).repayBorrowBehalf(user, uint(-1)) == 0, \"Repay borrow behalf fail\");\n\n\n\n // transfer cTokens to proxy\n\n uint cTokenBalance = CTokenInterface(cCollateralToken).balanceOf(user);\n\n require(CTokenInterface(cCollateralToken).transferFrom(user, proxy, cTokenBalance));\n\n\n\n // borrow\n\n bytes memory proxyData = getProxyData(cCollateralToken, cBorrowToken, _reserve, (_amount + _fee));\n\n DSProxyInterface(proxy).execute(COMPOUND_BORROW_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _cCollToken CToken address of collateral\n\n /// @param _cBorrowToken CToken address we will borrow\n\n /// @param _borrowToken Token address we will borrow\n\n /// @param _amount Amount that will be borrowed\n\n /// @return proxyData Formated function call data\n\n function getProxyData(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) internal pure returns (bytes memory proxyData) {\n\n proxyData = abi.encodeWithSignature(\n\n \"borrow(address,address,address,uint256)\",\n\n _cCollToken, _cBorrowToken, _borrowToken, _amount);\n\n }\n\n\n\n function withdrawStuckFunds(address _tokenAddr, uint _amount) public {\n\n require(owner == msg.sender, \"Must be owner\");\n\n\n\n if (_tokenAddr == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {\n\n msg.sender.transfer(_amount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(owner, _amount);\n\n }\n\n }\n\n}\n\ncontract CompoundImportTaker is CompoundSaverHelper, ProxyPermission, GasBurner {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_IMPORT_FLASH_LOAN = 0x0a9238e14d5A20CDb03811B12D1984587C3CE9a0;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must approve COMPOUND_IMPORT_FLASH_LOAN to pull _cCollateralToken\n\n /// @param _cCollateralToken Collateral we are moving to DSProxy\n\n /// @param _cBorrowToken Borrow token we are moving to DSProxy\n\n function importLoan(address _cCollateralToken, address _cBorrowToken) external burnGas(20) {\n\n address proxy = getProxy();\n\n\n\n uint loanAmount = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(msg.sender);\n\n bytes memory paramsData = abi.encode(_cCollateralToken, _cBorrowToken, msg.sender, proxy);\n\n\n\n givePermission(COMPOUND_IMPORT_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_IMPORT_FLASH_LOAN, getUnderlyingAddr(_cBorrowToken), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_IMPORT_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundImport\", abi.encode(loanAmount, 0, _cCollateralToken));\n\n }\n\n\n\n /// @notice Gets proxy address, if user doesn't has DSProxy build it\n\n /// @return proxy DsProxy address\n\n function getProxy() internal returns (address proxy) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).proxies(msg.sender);\n\n\n\n if (proxy == address(0)) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).build(msg.sender);\n\n }\n\n\n\n }\n\n}\n\ncontract CreamBasicProxy is GasBurner {\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice User deposits tokens to the cream protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _cTokenAddr CTokens to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n /// @param _inMarket True if the token is already in market for that address\n\n function deposit(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(5) payable {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: msg.value}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice User withdraws tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _cTokenAddr CTokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _isCAmount If true _amount is cTokens if falls _amount is underlying tokens\n\n function withdraw(address _tokenAddr, address _cTokenAddr, uint _amount, bool _isCAmount) public burnGas(5) {\n\n\n\n if (_isCAmount) {\n\n require(CTokenInterface(_cTokenAddr).redeem(_amount) == 0);\n\n } else {\n\n require(CTokenInterface(_cTokenAddr).redeemUnderlying(_amount) == 0);\n\n }\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n }\n\n\n\n /// @notice User borrows tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _cTokenAddr CTokens to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _inMarket True if the token is already in market for that address\n\n function borrow(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(8) {\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _cTokenAddr CTokens to be paybacked\n\n /// @param _amount Amount of tokens to be payedback\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _cTokenAddr, uint _amount, bool _wholeDebt) public burnGas(5) payable {\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (_wholeDebt) {\n\n _amount = CTokenInterface(_cTokenAddr).borrowBalanceCurrent(address(this));\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n\n\n require(CTokenInterface(_cTokenAddr).repayBorrow(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).repayBorrow{value: msg.value}();\n\n msg.sender.transfer(address(this).balance); // send back the extra eth\n\n }\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Enters the cream market so it can be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Exits the cream market so it can't be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function exitMarket(address _cTokenAddr) public {\n\n ComptrollerInterface(COMPTROLLER_ADDR).exitMarket(_cTokenAddr);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, 0);\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n}\n\ncontract CreamLoanInfo is CreamSafetyRatio {\n\n\n\n struct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint[] collAmounts;\n\n uint[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address cTokenAddress;\n\n address underlyingTokenAddress;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n address underlyingTokenAddress;\n\n uint supplyRate;\n\n uint borrowRate;\n\n uint exchangeRate;\n\n uint marketLiquidity;\n\n uint totalSupply;\n\n uint totalBorrow;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0xD06527D5e56A3495252A528C4987003b712860eE;\n\n\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a cream user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches cream prices for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _cTokens) public view returns (uint[] memory prices) {\n\n prices = new uint[](_cTokens.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n prices[i] = CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches cream collateral factors for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _cTokens) public view returns (uint[] memory collFactors) {\n\n collFactors = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n (, collFactors[i]) = comp.markets(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in eth\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](assets.length),\n\n borrowAddr: new address[](assets.length),\n\n collAmounts: new uint[](assets.length),\n\n borrowAmounts: new uint[](assets.length)\n\n });\n\n\n\n uint collPos = 0;\n\n uint borrowPos = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in eth\n\n if (cTokenBalance != 0) {\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, Exp memory tokensToEth) = mulExp(exchangeRate, oraclePrice);\n\n\n\n data.collAddr[collPos] = asset;\n\n (, data.collAmounts[collPos]) = mulScalarTruncate(tokensToEth, cTokenBalance);\n\n collPos++;\n\n }\n\n\n\n // Sum up debt in eth\n\n if (borrowBalance != 0) {\n\n data.borrowAddr[borrowPos] = asset;\n\n (, data.borrowAmounts[borrowPos]) = mulScalarTruncate(oraclePrice, borrowBalance);\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _cTokens) public view returns (uint[] memory balances, uint[] memory borrows) {\n\n balances = new uint[](_cTokens.length);\n\n borrows = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; i++) {\n\n address asset = _cTokens[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, balances[i]) = mulScalarTruncate(exchangeRate, cTokenBalance);\n\n\n\n borrows[i] = borrowBalance;\n\n }\n\n\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in eth\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a cream user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint[] memory ratios) {\n\n ratios = new uint[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfo[] memory tokens) {\n\n tokens = new TokenInfo[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n cTokenAddress: _cTokenAddresses[i],\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getFullTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfoFull[] memory tokens) {\n\n tokens = new TokenInfoFull[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n CTokenInterface cToken = CTokenInterface(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n supplyRate: cToken.supplyRatePerBlock(),\n\n borrowRate: cToken.borrowRatePerBlock(),\n\n exchangeRate: cToken.exchangeRateCurrent(),\n\n marketLiquidity: cToken.getCash(),\n\n totalSupply: cToken.totalSupply(),\n\n totalBorrow: cToken.totalBorrowsCurrent(),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n}\n\ncontract CreamImportFlashLoan is FlashLoanReceiverBase {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant CREAM_BORROW_PROXY = 0x87F198Ef6116CdBC5f36B581d212ad950b7e2Ddd;\n\n\n\n address public owner;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (\n\n address cCollateralToken,\n\n address cBorrowToken,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(_params, (address,address,address,address));\n\n\n\n // approve FL tokens so we can repay them\n\n ERC20(_reserve).safeApprove(cBorrowToken, 0);\n\n ERC20(_reserve).safeApprove(cBorrowToken, uint(-1));\n\n\n\n // repay cream debt\n\n require(CTokenInterface(cBorrowToken).repayBorrowBehalf(user, uint(-1)) == 0, \"Repay borrow behalf fail\");\n\n\n\n // transfer cTokens to proxy\n\n uint cTokenBalance = CTokenInterface(cCollateralToken).balanceOf(user);\n\n require(CTokenInterface(cCollateralToken).transferFrom(user, proxy, cTokenBalance));\n\n\n\n // borrow\n\n bytes memory proxyData = getProxyData(cCollateralToken, cBorrowToken, _reserve, (_amount + _fee));\n\n DSProxyInterface(proxy).execute(CREAM_BORROW_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _cCollToken CToken address of collateral\n\n /// @param _cBorrowToken CToken address we will borrow\n\n /// @param _borrowToken Token address we will borrow\n\n /// @param _amount Amount that will be borrowed\n\n /// @return proxyData Formated function call data\n\n function getProxyData(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) internal pure returns (bytes memory proxyData) {\n\n proxyData = abi.encodeWithSignature(\n\n \"borrow(address,address,address,uint256)\",\n\n _cCollToken, _cBorrowToken, _borrowToken, _amount);\n\n }\n\n\n\n function withdrawStuckFunds(address _tokenAddr, uint _amount) public {\n\n require(owner == msg.sender, \"Must be owner\");\n\n\n\n if (_tokenAddr == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {\n\n msg.sender.transfer(_amount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(owner, _amount);\n\n }\n\n }\n\n}\n\ncontract CreamImportTaker is CreamSaverHelper, ProxyPermission, GasBurner {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant CREAM_IMPORT_FLASH_LOAN = 0x24F4aC0Fe758c45cf8425D8Fbdd608cca9A7dBf8;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must approve cream_IMPORT_FLASH_LOAN to pull _cCollateralToken\n\n /// @param _cCollateralToken Collateral we are moving to DSProxy\n\n /// @param _cBorrowToken Borrow token we are moving to DSProxy\n\n function importLoan(address _cCollateralToken, address _cBorrowToken) external burnGas(20) {\n\n address proxy = getProxy();\n\n\n\n uint loanAmount = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(msg.sender);\n\n bytes memory paramsData = abi.encode(_cCollateralToken, _cBorrowToken, msg.sender, proxy);\n\n\n\n givePermission(CREAM_IMPORT_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(CREAM_IMPORT_FLASH_LOAN, getUnderlyingAddr(_cBorrowToken), loanAmount, paramsData);\n\n\n\n removePermission(CREAM_IMPORT_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamImport\", abi.encode(loanAmount, 0, _cCollateralToken));\n\n }\n\n\n\n /// @notice Gets proxy address, if user doesn't has DSProxy build it\n\n /// @return proxy DsProxy address\n\n function getProxy() internal returns (address proxy) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).proxies(msg.sender);\n\n\n\n if (proxy == address(0)) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).build(msg.sender);\n\n }\n\n\n\n }\n\n}\n\ncontract SaverExchangeCore is SaverExchangeHelper, DSMath {\n\n\n\n // first is empty to keep the legacy order in place\n\n enum ExchangeType { _, OASIS, KYBER, UNISWAP, ZEROX }\n\n\n\n enum ActionType { SELL, BUY }\n\n\n\n struct ExchangeData {\n\n address srcAddr;\n\n address destAddr;\n\n uint srcAmount;\n\n uint destAmount;\n\n uint minPrice;\n\n address wrapper;\n\n address exchangeAddr;\n\n bytes callData;\n\n uint256 price0x;\n\n }\n\n\n\n /// @notice Internal method that preforms a sell on 0x/on-chain\n\n /// @dev Usefull for other DFS contract to integrate for exchanging\n\n /// @param exData Exchange data struct\n\n /// @return (address, uint) Address of the wrapper used and destAmount\n\n function _sell(ExchangeData memory exData) internal returns (address, uint) {\n\n\n\n address wrapper;\n\n uint swapedTokens;\n\n bool success;\n\n uint tokensLeft = exData.srcAmount;\n\n\n\n // if selling eth, convert to weth\n\n if (exData.srcAddr == KYBER_ETH_ADDRESS) {\n\n exData.srcAddr = ethToWethAddr(exData.srcAddr);\n\n TokenInterface(WETH_ADDRESS).deposit.value(exData.srcAmount)();\n\n }\n\n\n\n // Try 0x first and then fallback on specific wrapper\n\n if (exData.price0x > 0) {\n\n approve0xProxy(exData.srcAddr, exData.srcAmount);\n\n\n\n uint ethAmount = getProtocolFee(exData.srcAddr, msg.value, exData.srcAmount);\n\n (success, swapedTokens, tokensLeft) = takeOrder(exData, ethAmount, ActionType.SELL);\n\n\n\n if (success) {\n\n wrapper = exData.exchangeAddr;\n\n }\n\n }\n\n\n\n // fallback to desired wrapper if 0x failed\n\n if (!success) {\n\n swapedTokens = saverSwap(exData, ActionType.SELL);\n\n wrapper = exData.wrapper;\n\n }\n\n\n\n require(getBalance(exData.destAddr) >= wmul(exData.minPrice, exData.srcAmount), \"Final amount isn't correct\");\n\n\n\n // if anything is left in weth, pull it to user as eth\n\n if (getBalance(WETH_ADDRESS) > 0) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n return (wrapper, swapedTokens);\n\n }\n\n\n\n /// @notice Internal method that preforms a buy on 0x/on-chain\n\n /// @dev Usefull for other DFS contract to integrate for exchanging\n\n /// @param exData Exchange data struct\n\n /// @return (address, uint) Address of the wrapper used and srcAmount\n\n function _buy(ExchangeData memory exData) internal returns (address, uint) {\n\n\n\n address wrapper;\n\n uint swapedTokens;\n\n bool success;\n\n\n\n require(exData.destAmount != 0, \"Dest amount must be specified\");\n\n\n\n // if selling eth, convert to weth\n\n if (exData.srcAddr == KYBER_ETH_ADDRESS) {\n\n exData.srcAddr = ethToWethAddr(exData.srcAddr);\n\n TokenInterface(WETH_ADDRESS).deposit.value(exData.srcAmount)();\n\n }\n\n\n\n if (exData.price0x > 0) {\n\n approve0xProxy(exData.srcAddr, exData.srcAmount);\n\n\n\n uint ethAmount = getProtocolFee(exData.srcAddr, msg.value, exData.srcAmount);\n\n (success, swapedTokens,) = takeOrder(exData, ethAmount, ActionType.BUY);\n\n\n\n if (success) {\n\n wrapper = exData.exchangeAddr;\n\n }\n\n }\n\n\n\n // fallback to desired wrapper if 0x failed\n\n if (!success) {\n\n swapedTokens = saverSwap(exData, ActionType.BUY);\n\n wrapper = exData.wrapper;\n\n }\n\n\n\n require(swapedTokens >= exData.destAmount, \"Final amount isn't correct\");\n\n\n\n // if anything is left in weth, pull it to user as eth\n\n if (getBalance(WETH_ADDRESS) > 0) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n return (wrapper, getBalance(exData.destAddr));\n\n }\n\n\n\n /// @notice Takes order from 0x and returns bool indicating if it is successful\n\n /// @param _exData Exchange data\n\n /// @param _ethAmount Ether fee needed for 0x order\n\n function takeOrder(\n\n ExchangeData memory _exData,\n\n uint256 _ethAmount,\n\n ActionType _type\n\n ) private returns (bool success, uint256, uint256) {\n\n\n\n // write in the exact amount we are selling/buing in an order\n\n if (_type == ActionType.SELL) {\n\n writeUint256(_exData.callData, 36, _exData.srcAmount);\n\n } else {\n\n writeUint256(_exData.callData, 36, _exData.destAmount);\n\n }\n\n\n\n if (ZrxAllowlist(ZRX_ALLOWLIST_ADDR).isNonPayableAddr(_exData.exchangeAddr)) {\n\n _ethAmount = 0;\n\n }\n\n\n\n uint256 tokensBefore = getBalance(_exData.destAddr);\n\n\n\n if (ZrxAllowlist(ZRX_ALLOWLIST_ADDR).isZrxAddr(_exData.exchangeAddr)) {\n\n (success, ) = _exData.exchangeAddr.call{value: _ethAmount}(_exData.callData);\n\n } else {\n\n success = false;\n\n }\n\n\n\n uint256 tokensSwaped = 0;\n\n uint256 tokensLeft = _exData.srcAmount;\n\n\n\n if (success) {\n\n // check to see if any _src tokens are left over after exchange\n\n tokensLeft = getBalance(_exData.srcAddr);\n\n\n\n // convert weth -> eth if needed\n\n if (_exData.destAddr == KYBER_ETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n // get the current balance of the swaped tokens\n\n tokensSwaped = getBalance(_exData.destAddr) - tokensBefore;\n\n }\n\n\n\n return (success, tokensSwaped, tokensLeft);\n\n }\n\n\n\n /// @notice Calls wraper contract for exchage to preform an on-chain swap\n\n /// @param _exData Exchange data struct\n\n /// @param _type Type of action SELL|BUY\n\n /// @return swapedTokens For Sell that the destAmount, for Buy thats the srcAmount\n\n function saverSwap(ExchangeData memory _exData, ActionType _type) internal returns (uint swapedTokens) {\n\n require(SaverExchangeRegistry(SAVER_EXCHANGE_REGISTRY).isWrapper(_exData.wrapper), \"Wrapper is not valid\");\n\n\n\n uint ethValue = 0;\n\n\n\n ERC20(_exData.srcAddr).safeTransfer(_exData.wrapper, _exData.srcAmount);\n\n\n\n if (_type == ActionType.SELL) {\n\n swapedTokens = ExchangeInterfaceV2(_exData.wrapper).\n\n sell{value: ethValue}(_exData.srcAddr, _exData.destAddr, _exData.srcAmount);\n\n } else {\n\n swapedTokens = ExchangeInterfaceV2(_exData.wrapper).\n\n buy{value: ethValue}(_exData.srcAddr, _exData.destAddr, _exData.destAmount);\n\n }\n\n }\n\n\n\n function writeUint256(bytes memory _b, uint256 _index, uint _input) internal pure {\n\n if (_b.length < _index + 32) {\n\n revert(\"Incorrent lengt while writting bytes32\");\n\n }\n\n\n\n bytes32 input = bytes32(_input);\n\n\n\n _index += 32;\n\n\n\n // Read the bytes32 from array memory\n\n assembly {\n\n mstore(add(_b, _index), input)\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n /// @notice Calculates protocol fee \n\n /// @param _srcAddr selling token address (if eth should be WETH)\n\n /// @param _msgValue msg.value in transaction\n\n /// @param _srcAmount amount we are selling\n\n function getProtocolFee(address _srcAddr, uint256 _msgValue, uint256 _srcAmount) internal returns(uint256) {\n\n // if we are not selling ETH msg value is always the protocol fee\n\n if (_srcAddr != WETH_ADDRESS) return _msgValue;\n\n\n\n // if msg value is larger than srcAmount, that means that msg value is protocol fee + srcAmount, so we subsctract srcAmount from msg value\n\n // we have an edge case here when protocol fee is higher than selling amount\n\n if (_msgValue > _srcAmount) return _msgValue - _srcAmount;\n\n\n\n // if msg value is lower than src amount, that means that srcAmount isn't included in msg value, so we return msg value\n\n return _msgValue;\n\n }\n\n\n\n function packExchangeData(ExchangeData memory _exData) public pure returns(bytes memory) {\n\n // splitting in two different bytes and encoding all because of stack too deep in decoding part\n\n\n\n bytes memory part1 = abi.encode(\n\n _exData.srcAddr,\n\n _exData.destAddr,\n\n _exData.srcAmount,\n\n _exData.destAmount\n\n );\n\n\n\n bytes memory part2 = abi.encode(\n\n _exData.minPrice,\n\n _exData.wrapper,\n\n _exData.exchangeAddr,\n\n _exData.callData,\n\n _exData.price0x\n\n );\n\n\n\n\n\n return abi.encode(part1, part2);\n\n }\n\n\n\n function unpackExchangeData(bytes memory _data) public pure returns(ExchangeData memory _exData) {\n\n (\n\n bytes memory part1,\n\n bytes memory part2\n\n ) = abi.decode(_data, (bytes,bytes));\n\n\n\n (\n\n _exData.srcAddr,\n\n _exData.destAddr,\n\n _exData.srcAmount,\n\n _exData.destAmount\n\n ) = abi.decode(part1, (address,address,uint256,uint256));\n\n\n\n (\n\n _exData.minPrice,\n\n _exData.wrapper,\n\n _exData.exchangeAddr,\n\n _exData.callData,\n\n _exData.price0x\n\n )\n\n = abi.decode(part2, (uint256,address,address,bytes,uint256));\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external virtual payable {}\n\n}\n\ncontract KyberWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant KYBER_INTERFACE = 0x9AAb3f75489902f3a48495025729a0AF77d4b11e;\n\n address payable public constant WALLET_ID = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Kyber\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external override payable returns (uint) {\n\n ERC20 srcToken = ERC20(_srcAddr);\n\n ERC20 destToken = ERC20(_destAddr);\n\n\n\n KyberNetworkProxyInterface kyberNetworkProxy = KyberNetworkProxyInterface(KYBER_INTERFACE);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcToken.safeApprove(address(kyberNetworkProxy), _srcAmount);\n\n }\n\n\n\n uint destAmount = kyberNetworkProxy.trade{value: msg.value}(\n\n srcToken,\n\n _srcAmount,\n\n destToken,\n\n msg.sender,\n\n uint(-1),\n\n 0,\n\n WALLET_ID\n\n );\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Kyber\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n ERC20 srcToken = ERC20(_srcAddr);\n\n ERC20 destToken = ERC20(_destAddr);\n\n\n\n uint srcAmount = 0;\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcAmount = srcToken.balanceOf(address(this));\n\n } else {\n\n srcAmount = msg.value;\n\n }\n\n\n\n KyberNetworkProxyInterface kyberNetworkProxy = KyberNetworkProxyInterface(KYBER_INTERFACE);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcToken.safeApprove(address(kyberNetworkProxy), srcAmount);\n\n }\n\n\n\n uint destAmount = kyberNetworkProxy.trade{value: msg.value}(\n\n srcToken,\n\n srcAmount,\n\n destToken,\n\n msg.sender,\n\n _destAmount,\n\n 0,\n\n WALLET_ID\n\n );\n\n\n\n require(destAmount == _destAmount, \"Wrong dest amount\");\n\n\n\n uint srcAmountAfter = 0;\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcAmountAfter = srcToken.balanceOf(address(this));\n\n } else {\n\n srcAmountAfter = address(this).balance;\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return (srcAmount - srcAmountAfter);\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return rate Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint rate) {\n\n (rate, ) = KyberNetworkProxyInterface(KYBER_INTERFACE)\n\n .getExpectedRate(ERC20(_srcAddr), ERC20(_destAddr), _srcAmount);\n\n\n\n // multiply with decimal difference in src token\n\n rate = rate * (10**(18 - getDecimals(_srcAddr)));\n\n // divide with decimal difference in dest token\n\n rate = rate / (10**(18 - getDecimals(_destAddr)));\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return rate Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint rate) {\n\n uint256 srcRate = getSellRate(_destAddr, _srcAddr, _destAmount);\n\n uint256 srcAmount = wmul(srcRate, _destAmount);\n\n\n\n rate = getSellRate(_srcAddr, _destAddr, srcAmount);\n\n\n\n // increase rate by 3% too account for inaccuracy between sell/buy conversion\n\n rate = rate + (rate / 30);\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n receive() payable external {}\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n}\n\ncontract OasisTradeWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant OTC_ADDRESS = 0x794e6e91555438aFc3ccF1c5076A74F42133d08D;\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Oasis\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external override payable returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n ERC20(srcAddr).safeApprove(OTC_ADDRESS, _srcAmount);\n\n\n\n uint destAmount = OasisInterface(OTC_ADDRESS).sellAllAmount(srcAddr, _srcAmount, destAddr, 0);\n\n\n\n // convert weth -> eth and send back\n\n if (destAddr == WETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(destAmount);\n\n msg.sender.transfer(destAmount);\n\n } else {\n\n ERC20(destAddr).safeTransfer(msg.sender, destAmount);\n\n }\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Oasis\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n ERC20(srcAddr).safeApprove(OTC_ADDRESS, uint(-1));\n\n\n\n uint srcAmount = OasisInterface(OTC_ADDRESS).buyAllAmount(destAddr, _destAmount, srcAddr, uint(-1));\n\n\n\n // convert weth -> eth and send back\n\n if (destAddr == WETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(_destAmount);\n\n msg.sender.transfer(_destAmount);\n\n } else {\n\n ERC20(destAddr).safeTransfer(msg.sender, _destAmount);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(srcAddr);\n\n\n\n return srcAmount;\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n return wdiv(OasisInterface(OTC_ADDRESS).getBuyAmount(destAddr, srcAddr, _srcAmount), _srcAmount);\n\n }\n\n\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n return wdiv(1 ether, wdiv(OasisInterface(OTC_ADDRESS).getPayAmount(srcAddr, destAddr, _destAmount), _destAmount));\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n\n\n receive() payable external {}\n\n}\n\ncontract UniswapV2Wrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n UniswapRouterInterface public constant router = UniswapRouterInterface(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at UniswapV2\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable override returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n uint[] memory amounts;\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n ERC20(_srcAddr).safeApprove(address(router), _srcAmount);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n amounts = router.swapExactTokensForETH(_srcAmount, 1, path, msg.sender, block.timestamp + 1);\n\n }\n\n // if we are selling token to token\n\n else {\n\n amounts = router.swapExactTokensForTokens(_srcAmount, 1, path, msg.sender, block.timestamp + 1);\n\n }\n\n\n\n return amounts[amounts.length - 1];\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at UniswapV2\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n uint[] memory amounts;\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n ERC20(_srcAddr).safeApprove(address(router), uint(-1));\n\n\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n amounts = router.swapTokensForExactETH(_destAmount, uint(-1), path, msg.sender, block.timestamp + 1);\n\n }\n\n // if we are buying token to token\n\n else {\n\n amounts = router.swapTokensForExactTokens(_destAmount, uint(-1), path, msg.sender, block.timestamp + 1);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return amounts[0];\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n uint[] memory amounts = router.getAmountsOut(_srcAmount, path);\n\n return wdiv(amounts[amounts.length - 1], _srcAmount);\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n uint[] memory amounts = router.getAmountsIn(_destAmount, path);\n\n return wdiv(_destAmount, amounts[0]);\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n receive() payable external {}\n\n}\n\ncontract UniswapWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant UNISWAP_FACTORY = 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Uniswap\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable override returns (uint) {\n\n address uniswapExchangeAddr;\n\n uint destAmount;\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, _srcAmount);\n\n\n\n destAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToEthTransferInput(_srcAmount, 1, block.timestamp + 1, msg.sender);\n\n }\n\n // if we are selling token to token\n\n else {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, _srcAmount);\n\n\n\n destAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToTokenTransferInput(_srcAmount, 1, 1, block.timestamp + 1, msg.sender, _destAddr);\n\n }\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Uniswap\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n address uniswapExchangeAddr;\n\n uint srcAmount;\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, uint(-1));\n\n\n\n srcAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToEthTransferOutput(_destAmount, uint(-1), block.timestamp + 1, msg.sender);\n\n }\n\n // if we are buying token to token\n\n else {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, uint(-1));\n\n\n\n srcAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToTokenTransferOutput(_destAmount, uint(-1), uint(-1), block.timestamp + 1, msg.sender, _destAddr);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return srcAmount;\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n if(_srcAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr);\n\n return wdiv(UniswapExchangeInterface(uniswapTokenAddress).getEthToTokenInputPrice(_srcAmount), _srcAmount);\n\n } else if (_destAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n return wdiv(UniswapExchangeInterface(uniswapTokenAddress).getTokenToEthInputPrice(_srcAmount), _srcAmount);\n\n } else {\n\n uint ethBought = UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr)).getTokenToEthInputPrice(_srcAmount);\n\n return wdiv(UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr)).getEthToTokenInputPrice(ethBought), _srcAmount);\n\n }\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n if(_srcAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(uniswapTokenAddress).getEthToTokenOutputPrice(_destAmount), _destAmount));\n\n } else if (_destAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(uniswapTokenAddress).getTokenToEthOutputPrice(_destAmount), _destAmount));\n\n } else {\n\n uint ethNeeded = UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr)).getTokenToEthOutputPrice(_destAmount);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr)).getEthToTokenOutputPrice(ethNeeded), _destAmount));\n\n }\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n receive() payable external {}\n\n}\n\ncontract DyDxFlashLoanTaker is DydxFlashLoanBase, ProxyPermission {\n\n\n\n address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n /// @notice Takes flash loan for _receiver\n\n /// @dev Receiver must send back WETH + 2 wei after executing transaction\n\n /// @dev Method is meant to be called from proxy and proxy will give authorization to _receiver\n\n /// @param _receiver Address of funds receiver\n\n /// @param _ethAmount ETH amount that needs to be pulled from dydx \n\n /// @param _encodedData Bytes with packed data\n\n function takeLoan(address _receiver, uint256 _ethAmount, bytes memory _encodedData) public {\n\n ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n\n\n // Get marketId from token address\n\n uint256 marketId = _getMarketIdFromTokenAddress(WETH_ADDR);\n\n\n\n // Calculate repay amount (_amount + (2 wei))\n\n // Approve transfer from\n\n uint256 repayAmount = _getRepaymentAmountInternal(_ethAmount);\n\n ERC20(WETH_ADDR).approve(SOLO_MARGIN_ADDRESS, repayAmount);\n\n\n\n Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);\n\n\n\n operations[0] = _getWithdrawAction(marketId, _ethAmount, _receiver);\n\n operations[1] = _getCallAction(\n\n _encodedData,\n\n _receiver\n\n );\n\n operations[2] = _getDepositAction(marketId, repayAmount, address(this));\n\n\n\n Account.Info[] memory accountInfos = new Account.Info[](1);\n\n accountInfos[0] = _getAccountInfo();\n\n\n\n givePermission(_receiver);\n\n solo.operate(accountInfos, operations);\n\n removePermission(_receiver);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"DyDxFlashLoanTaken\", abi.encode(_receiver, _ethAmount, _encodedData));\n\n }\n\n}\n\nabstract contract CTokenInterface is ERC20 {\n\n function mint(uint256 mintAmount) external virtual returns (uint256);\n\n\n\n // function mint() external virtual payable;\n\n\n\n function accrueInterest() public virtual returns (uint);\n\n\n\n function redeem(uint256 redeemTokens) external virtual returns (uint256);\n\n\n\n function redeemUnderlying(uint256 redeemAmount) external virtual returns (uint256);\n\n\n\n function borrow(uint256 borrowAmount) external virtual returns (uint256);\n\n\n\n function repayBorrow(uint256 repayAmount) external virtual returns (uint256);\n\n\n\n function repayBorrow() external virtual payable;\n\n\n\n function repayBorrowBehalf(address borrower, uint256 repayAmount) external virtual returns (uint256);\n\n\n\n function repayBorrowBehalf(address borrower) external virtual payable;\n\n\n\n function liquidateBorrow(address borrower, uint256 repayAmount, address cTokenCollateral)\n\n external virtual\n\n returns (uint256);\n\n\n\n function liquidateBorrow(address borrower, address cTokenCollateral) external virtual payable;\n\n\n\n function exchangeRateCurrent() external virtual returns (uint256);\n\n\n\n function supplyRatePerBlock() external virtual returns (uint256);\n\n\n\n function borrowRatePerBlock() external virtual returns (uint256);\n\n\n\n function totalReserves() external virtual returns (uint256);\n\n\n\n function reserveFactorMantissa() external virtual returns (uint256);\n\n\n\n function borrowBalanceCurrent(address account) external virtual returns (uint256);\n\n\n\n function totalBorrowsCurrent() external virtual returns (uint256);\n\n\n\n function getCash() external virtual returns (uint256);\n\n\n\n function balanceOfUnderlying(address owner) external virtual returns (uint256);\n\n\n\n function underlying() external virtual returns (address);\n\n\n\n function getAccountSnapshot(address account) external virtual view returns (uint, uint, uint, uint);\n\n}\n\nabstract contract ISubscriptionsV2 is StaticV2 {\n\n\n\n function getOwner(uint _cdpId) external view virtual returns(address);\n\n function getSubscribedInfo(uint _cdpId) public view virtual returns(bool, uint128, uint128, uint128, uint128, address, uint coll, uint debt);\n\n function getCdpHolder(uint _cdpId) public view virtual returns (bool subscribed, CdpHolder memory);\n\n}\n\ncontract MCDMonitorV2 is DSMath, AdminAuth, GasBurner, StaticV2 {\n\n\n\n uint public REPAY_GAS_TOKEN = 25;\n\n uint public BOOST_GAS_TOKEN = 25;\n\n\n\n uint public MAX_GAS_PRICE = 200000000000; // 200 gwei\n\n\n\n uint public REPAY_GAS_COST = 2500000;\n\n uint public BOOST_GAS_COST = 2500000;\n\n\n\n MCDMonitorProxyV2 public monitorProxyContract;\n\n ISubscriptionsV2 public subscriptionsContract;\n\n address public mcdSaverTakerAddress;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n Manager public manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n Vat public vat = Vat(0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B);\n\n Spotter public spotter = Spotter(0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3);\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n constructor(address _monitorProxy, address _subscriptions, address _mcdSaverTakerAddress) public {\n\n monitorProxyContract = MCDMonitorProxyV2(_monitorProxy);\n\n subscriptionsContract = ISubscriptionsV2(_subscriptions);\n\n mcdSaverTakerAddress = _mcdSaverTakerAddress;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _nextPrice,\n\n address _joinAddr\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _cdpId, _nextPrice);\n\n require(isAllowed);\n\n\n\n uint gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n address owner = subscriptionsContract.getOwner(_cdpId);\n\n\n\n monitorProxyContract.callExecute{value: msg.value}(\n\n owner,\n\n mcdSaverTakerAddress,\n\n abi.encodeWithSignature(\n\n \"repayWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256,uint256,address)\",\n\n _exchangeData, _cdpId, gasCost, _joinAddr));\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _cdpId, _nextPrice);\n\n require(isGoodRatio);\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), owner, \"AutomaticMCDRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _nextPrice,\n\n address _joinAddr\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _cdpId, _nextPrice);\n\n require(isAllowed);\n\n\n\n uint gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n address owner = subscriptionsContract.getOwner(_cdpId);\n\n\n\n monitorProxyContract.callExecute{value: msg.value}(\n\n owner,\n\n mcdSaverTakerAddress,\n\n abi.encodeWithSignature(\n\n \"boostWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256,uint256,address)\",\n\n _exchangeData, _cdpId, gasCost, _joinAddr));\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _cdpId, _nextPrice);\n\n require(isGoodRatio);\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), owner, \"AutomaticMCDBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Returns an address that owns the CDP\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(uint _cdpId) public view returns(address) {\n\n return manager.owns(_cdpId);\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt)\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getCdpInfo(uint _cdpId, bytes32 _ilk) public view returns (uint, uint) {\n\n address urn = manager.urns(_cdpId);\n\n\n\n (uint collateral, uint debt) = vat.urns(_ilk, urn);\n\n (,uint rate,,,) = vat.ilks(_ilk);\n\n\n\n return (collateral, rmul(debt, rate));\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint) {\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (,,uint spot,,) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n /// @notice Gets CDP ratio\n\n /// @param _cdpId Id of the CDP\n\n /// @param _nextPrice Next price for user\n\n function getRatio(uint _cdpId, uint _nextPrice) public view returns (uint) {\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n uint price = (_nextPrice == 0) ? getPrice(ilk) : _nextPrice;\n\n\n\n (uint collateral, uint debt) = getCdpInfo(_cdpId, ilk);\n\n\n\n if (debt == 0) return 0;\n\n\n\n return rdiv(wmul(collateral, price), debt) / (10 ** 18);\n\n }\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by MCDMonitor to enforce the min/max check\n\n function canCall(Method _method, uint _cdpId, uint _nextPrice) public view returns(bool, uint) {\n\n bool subscribed;\n\n CdpHolder memory holder;\n\n (subscribed, holder) = subscriptionsContract.getCdpHolder(_cdpId);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if using next price is allowed\n\n if (_nextPrice > 0 && !holder.nextPriceEnabled) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n // check if owner is still owner\n\n if (getOwner(_cdpId) != holder.owner) return (false, 0);\n\n\n\n uint currRatio = getRatio(_cdpId, _nextPrice);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n function ratioGoodAfter(Method _method, uint _cdpId, uint _nextPrice) public view returns(bool, uint) {\n\n CdpHolder memory holder;\n\n\n\n (, holder) = subscriptionsContract.getCdpHolder(_cdpId);\n\n\n\n uint currRatio = getRatio(_cdpId, _nextPrice);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change max gas price\n\n /// @param _maxGasPrice New max gas price\n\n function changeMaxGasPrice(uint _maxGasPrice) public onlyOwner {\n\n require(_maxGasPrice < 500000000000);\n\n\n\n MAX_GAS_PRICE = _maxGasPrice;\n\n }\n\n\n\n /// @notice Allows owner to change the amount of gas token burned per function call\n\n /// @param _gasAmount Amount of gas token\n\n /// @param _isRepay Flag to know for which function we are setting the gas token amount\n\n function changeGasTokenAmount(uint _gasAmount, bool _isRepay) public onlyOwner {\n\n if (_isRepay) {\n\n REPAY_GAS_TOKEN = _gasAmount;\n\n } else {\n\n BOOST_GAS_TOKEN = _gasAmount;\n\n }\n\n }\n\n}\n\ncontract MCDCloseFlashLoan is SaverExchangeCore, MCDSaverProxyHelper, FlashLoanReceiverBase, AdminAuth {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n uint public constant SERVICE_FEE = 400; // 0.25% Fee\n\n\n\n bytes32 internal constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant ETH_JOIN_ADDRESS = 0x2F0b23f53734252Bda2277357e97e1517d6B042A;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n DaiJoin public constant daiJoin = DaiJoin(DAI_JOIN_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n\n\n struct CloseData {\n\n uint cdpId;\n\n uint collAmount;\n\n uint daiAmount;\n\n uint minAccepted;\n\n address joinAddr;\n\n address proxy;\n\n uint flFee;\n\n bool toDai;\n\n address reserve;\n\n uint amount;\n\n }\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (\n\n uint[8] memory numData,\n\n address[5] memory addrData,\n\n bytes memory callData,\n\n address proxy,\n\n bool toDai\n\n )\n\n = abi.decode(_params, (uint256[8],address[5],bytes,address,bool));\n\n\n\n ExchangeData memory exchangeData = ExchangeData({\n\n srcAddr: addrData[0],\n\n destAddr: addrData[1],\n\n srcAmount: numData[4],\n\n destAmount: numData[5],\n\n minPrice: numData[6],\n\n wrapper: addrData[3],\n\n exchangeAddr: addrData[2],\n\n callData: callData,\n\n price0x: numData[7]\n\n });\n\n\n\n CloseData memory closeData = CloseData({\n\n cdpId: numData[0],\n\n collAmount: numData[1],\n\n daiAmount: numData[2],\n\n minAccepted: numData[3],\n\n joinAddr: addrData[4],\n\n proxy: proxy,\n\n flFee: _fee,\n\n toDai: toDai,\n\n reserve: _reserve,\n\n amount: _amount\n\n });\n\n\n\n address user = DSProxy(payable(closeData.proxy)).owner();\n\n\n\n closeCDP(closeData, exchangeData, user);\n\n }\n\n\n\n function closeCDP(\n\n CloseData memory _closeData,\n\n ExchangeData memory _exchangeData,\n\n address _user\n\n ) internal {\n\n\n\n paybackDebt(_closeData.cdpId, manager.ilks(_closeData.cdpId), _closeData.daiAmount); // payback whole debt\n\n drawMaxCollateral(_closeData.cdpId, _closeData.joinAddr, _closeData.collAmount); // draw whole collateral\n\n\n\n uint daiSwaped = 0;\n\n uint dfsFee = 0;\n\n\n\n if (_closeData.toDai) {\n\n _exchangeData.srcAmount = _closeData.collAmount;\n\n (, daiSwaped) = _sell(_exchangeData);\n\n\n\n dfsFee = getFee(daiSwaped, _user);\n\n } else {\n\n dfsFee = getFee(_closeData.daiAmount, _user);\n\n\n\n _exchangeData.destAmount = (_closeData.daiAmount + _closeData.flFee + dfsFee);\n\n (, daiSwaped) = _buy(_exchangeData);\n\n }\n\n\n\n takeFee(dfsFee);\n\n\n\n address tokenAddr = getVaultCollAddr(_closeData.joinAddr);\n\n\n\n if (_closeData.toDai) {\n\n tokenAddr = DAI_ADDRESS;\n\n }\n\n\n\n require(getBalance(tokenAddr) >= _closeData.minAccepted, \"Below min. number of eth specified\");\n\n\n\n transferFundsBackToPoolInternal(_closeData.reserve, _closeData.amount.add(_closeData.flFee));\n\n\n\n sendLeftover(tokenAddr, DAI_ADDRESS, payable(_user));\n\n\n\n }\n\n\n\n function drawMaxCollateral(uint _cdpId, address _joinAddr, uint _amount) internal returns (uint) {\n\n manager.frob(_cdpId, -toPositiveInt(_amount), 0);\n\n manager.flux(_cdpId, address(this), _amount);\n\n\n\n uint joinAmount = _amount;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n joinAmount = _amount / (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n Join(_joinAddr).exit(address(this), joinAmount);\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n Join(_joinAddr).gem().withdraw(joinAmount); // Weth -> Eth\n\n }\n\n\n\n return joinAmount;\n\n }\n\n\n\n function paybackDebt(uint _cdpId, bytes32 _ilk, uint _daiAmount) internal {\n\n address urn = manager.urns(_cdpId);\n\n\n\n daiJoin.dai().approve(DAI_JOIN_ADDRESS, _daiAmount);\n\n daiJoin.join(urn, _daiAmount);\n\n\n\n manager.frob(_cdpId, 0, normalizePaybackAmount(VAT_ADDRESS, urn, _ilk));\n\n }\n\n\n\n function takeFee(uint _feeAmount) internal returns (uint) {\n\n ERC20(DAI_ADDRESS).transfer(WALLET_ID, _feeAmount);\n\n }\n\n\n\n function getFee(uint _amount, address _owner) internal view returns (uint feeAmount) {\n\n uint fee = SERVICE_FEE;\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(_owner)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(_owner);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n }\n\n\n\n function getVaultCollAddr(address _joinAddr) internal view returns (address) {\n\n address tokenAddr = address(Join(_joinAddr).gem());\n\n\n\n if (tokenAddr == WETH_ADDRESS) {\n\n return KYBER_ETH_ADDRESS;\n\n }\n\n\n\n return tokenAddr;\n\n }\n\n\n\n function getPrice(bytes32 _ilk) public view returns (uint256) {\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (, , uint256 spot, , ) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n\n\n}\n\ncontract MCDCloseTaker is MCDSaverProxyHelper {\n\n\n\n address public constant SUBSCRIPTION_ADDRESS_NEW = 0xC45d4f6B6bf41b6EdAA58B01c4298B8d9078269a;\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n struct CloseData {\n\n uint cdpId;\n\n address joinAddr;\n\n uint collAmount;\n\n uint daiAmount;\n\n uint minAccepted;\n\n bool wholeDebt;\n\n bool toDai;\n\n }\n\n\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n\n\n function closeWithLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n CloseData memory _closeData,\n\n address payable mcdCloseFlashLoan\n\n ) public payable {\n\n mcdCloseFlashLoan.transfer(msg.value); // 0x fee\n\n\n\n if (_closeData.wholeDebt) {\n\n _closeData.daiAmount = getAllDebt(\n\n VAT_ADDRESS,\n\n manager.urns(_closeData.cdpId),\n\n manager.urns(_closeData.cdpId),\n\n manager.ilks(_closeData.cdpId)\n\n );\n\n\n\n (_closeData.collAmount, )\n\n = getCdpInfo(manager, _closeData.cdpId, manager.ilks(_closeData.cdpId));\n\n }\n\n\n\n manager.cdpAllow(_closeData.cdpId, mcdCloseFlashLoan, 1);\n\n\n\n (uint[8] memory numData, address[5] memory addrData, bytes memory callData)\n\n = _packData(_closeData, _exchangeData);\n\n bytes memory paramsData = abi.encode(numData, addrData, callData, address(this), _closeData.toDai);\n\n\n\n lendingPool.flashLoan(mcdCloseFlashLoan, DAI_ADDRESS, _closeData.daiAmount, paramsData);\n\n\n\n manager.cdpAllow(_closeData.cdpId, mcdCloseFlashLoan, 0);\n\n\n\n // If sub. to automatic protection unsubscribe\n\n unsubscribe(SUBSCRIPTION_ADDRESS_NEW, _closeData.cdpId);\n\n\n\n logger.Log(address(this), msg.sender, \"MCDClose\", abi.encode(_closeData.cdpId, _closeData.collAmount, _closeData.daiAmount, _closeData.toDai));\n\n }\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getMaxDebt(uint256 _cdpId, bytes32 _ilk) public view returns (uint256) {\n\n uint256 price = getPrice(_ilk);\n\n\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (uint256 collateral, uint256 debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(wdiv(wmul(collateral, price), mat), debt);\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint256) {\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (, , uint256 spot, , ) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n function unsubscribe(address _subContract, uint _cdpId) internal {\n\n (, bool isSubscribed) = IMCDSubscriptions(_subContract).subscribersPos(_cdpId);\n\n\n\n if (isSubscribed) {\n\n IMCDSubscriptions(_subContract).unsubscribe(_cdpId);\n\n }\n\n }\n\n\n\n function _packData(\n\n CloseData memory _closeData,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[8] memory numData, address[5] memory addrData, bytes memory callData) {\n\n\n\n numData = [\n\n _closeData.cdpId,\n\n _closeData.collAmount,\n\n _closeData.daiAmount,\n\n _closeData.minAccepted,\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n addrData = [\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper,\n\n _closeData.joinAddr\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n\n\n}\n\ncontract MCDCreateFlashLoan is SaverExchangeCore, AdminAuth, FlashLoanReceiverBase {\n\n address public constant CREATE_PROXY_ACTIONS = 0x6d0984E80a86f26c0dd564ca0CF74a8E9Da03305;\n\n\n\n uint public constant SERVICE_FEE = 400; // 0.25% Fee\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant ETH_JOIN_ADDRESS = 0x2F0b23f53734252Bda2277357e97e1517d6B042A;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant JUG_ADDRESS = 0x19c0976f590D67707E62397C87829d896Dc0f1F1;\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n //check the contract has the specified balance\n\n require(_amount <= getBalanceInternal(address(this), _reserve),\n\n \"Invalid balance for the contract\");\n\n\n\n (\n\n uint[6] memory numData,\n\n address[5] memory addrData,\n\n bytes memory callData,\n\n address proxy\n\n )\n\n = abi.decode(_params, (uint256[6],address[5],bytes,address));\n\n\n\n ExchangeData memory exchangeData = ExchangeData({\n\n srcAddr: addrData[0],\n\n destAddr: addrData[1],\n\n srcAmount: numData[2],\n\n destAmount: numData[3],\n\n minPrice: numData[4],\n\n wrapper: addrData[3],\n\n exchangeAddr: addrData[2],\n\n callData: callData,\n\n price0x: numData[5]\n\n });\n\n\n\n openAndLeverage(numData[0], numData[1] + _fee, addrData[4], proxy, exchangeData);\n\n\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function openAndLeverage(\n\n uint _collAmount,\n\n uint _daiAmountAndFee,\n\n address _joinAddr,\n\n address _proxy,\n\n ExchangeData memory _exchangeData\n\n ) public {\n\n\n\n uint dfsFee = getFee(_exchangeData.srcAmount, DSProxy(payable(_proxy)).owner());\n\n\n\n _exchangeData.srcAmount = (_exchangeData.srcAmount - dfsFee);\n\n (, uint256 collSwaped) = _sell(_exchangeData);\n\n\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n MCDCreateProxyActions(CREATE_PROXY_ACTIONS).openLockETHAndDraw{value: address(this).balance}(\n\n MANAGER_ADDRESS,\n\n JUG_ADDRESS,\n\n ETH_JOIN_ADDRESS,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _daiAmountAndFee,\n\n _proxy\n\n );\n\n } else {\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(CREATE_PROXY_ACTIONS, 0);\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(CREATE_PROXY_ACTIONS, uint256(-1));\n\n\n\n MCDCreateProxyActions(CREATE_PROXY_ACTIONS).openLockGemAndDraw(\n\n MANAGER_ADDRESS,\n\n JUG_ADDRESS,\n\n _joinAddr,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n (_collAmount + collSwaped),\n\n _daiAmountAndFee,\n\n true,\n\n _proxy\n\n );\n\n }\n\n }\n\n\n\n function getFee(uint _amount, address _owner) internal returns (uint feeAmount) {\n\n uint fee = SERVICE_FEE;\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(_owner)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(_owner);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n ERC20(DAI_ADDRESS).transfer(WALLET_ID, feeAmount);\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n}\n\ncontract MCDSaverProxy is SaverExchangeCore, MCDSaverProxyHelper {\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n bytes32 public constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant JUG_ADDRESS = 0x19c0976f590D67707E62397C87829d896Dc0f1F1;\n\n address public constant ETH_JOIN_ADDRESS = 0x2F0b23f53734252Bda2277357e97e1517d6B042A;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n Manager public constant manager = Manager(MANAGER_ADDRESS);\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n DaiJoin public constant daiJoin = DaiJoin(DAI_JOIN_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Repay - draws collateral, converts to Dai and repays the debt\n\n /// @dev Must be called by the DSProxy contract that owns the CDP\n\n function repay(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable {\n\n\n\n address owner = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n drawCollateral(_cdpId, _joinAddr, _exchangeData.srcAmount);\n\n\n\n (, uint daiAmount) = _sell(_exchangeData);\n\n\n\n uint daiAfterFee = sub(daiAmount, getFee(daiAmount, _gasCost, owner));\n\n\n\n paybackDebt(_cdpId, ilk, daiAfterFee, owner);\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n\n\n logger.Log(address(this), msg.sender, \"MCDRepay\", abi.encode(_cdpId, owner, _exchangeData.srcAmount, daiAmount));\n\n\n\n }\n\n\n\n /// @notice Boost - draws Dai, converts to collateral and adds to CDP\n\n /// @dev Must be called by the DSProxy contract that owns the CDP\n\n function boost(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable {\n\n address owner = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n uint daiDrawn = drawDai(_cdpId, ilk, _exchangeData.srcAmount);\n\n uint daiAfterFee = sub(daiDrawn, getFee(daiDrawn, _gasCost, owner));\n\n\n\n _exchangeData.srcAmount = daiAfterFee;\n\n (, uint swapedColl) = _sell(_exchangeData);\n\n\n\n addCollateral(_cdpId, _joinAddr, swapedColl);\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n\n\n logger.Log(address(this), msg.sender, \"MCDBoost\", abi.encode(_cdpId, owner, _exchangeData.srcAmount, swapedColl));\n\n }\n\n\n\n /// @notice Draws Dai from the CDP\n\n /// @dev If _daiAmount is bigger than max available we'll draw max\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _daiAmount Amount of Dai to draw\n\n function drawDai(uint _cdpId, bytes32 _ilk, uint _daiAmount) internal returns (uint) {\n\n uint rate = Jug(JUG_ADDRESS).drip(_ilk);\n\n uint daiVatBalance = vat.dai(manager.urns(_cdpId));\n\n\n\n uint maxAmount = getMaxDebt(_cdpId, _ilk);\n\n\n\n if (_daiAmount >= maxAmount) {\n\n _daiAmount = sub(maxAmount, 1);\n\n }\n\n\n\n manager.frob(_cdpId, int(0), normalizeDrawAmount(_daiAmount, rate, daiVatBalance));\n\n manager.move(_cdpId, address(this), toRad(_daiAmount));\n\n\n\n if (vat.can(address(this), address(DAI_JOIN_ADDRESS)) == 0) {\n\n vat.hope(DAI_JOIN_ADDRESS);\n\n }\n\n\n\n DaiJoin(DAI_JOIN_ADDRESS).exit(address(this), _daiAmount);\n\n\n\n return _daiAmount;\n\n }\n\n\n\n /// @notice Adds collateral to the CDP\n\n /// @param _cdpId Id of the CDP\n\n /// @param _joinAddr Address of the join contract for the CDP collateral\n\n /// @param _amount Amount of collateral to add\n\n function addCollateral(uint _cdpId, address _joinAddr, uint _amount) internal {\n\n int convertAmount = 0;\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n Join(_joinAddr).gem().deposit{value: _amount}();\n\n convertAmount = toPositiveInt(_amount);\n\n } else {\n\n convertAmount = toPositiveInt(convertTo18(_joinAddr, _amount));\n\n }\n\n\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(_joinAddr, 0);\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(_joinAddr, _amount);\n\n\n\n Join(_joinAddr).join(address(this), _amount);\n\n\n\n vat.frob(\n\n manager.ilks(_cdpId),\n\n manager.urns(_cdpId),\n\n address(this),\n\n address(this),\n\n convertAmount,\n\n 0\n\n );\n\n\n\n }\n\n\n\n /// @notice Draws collateral and returns it to DSProxy\n\n /// @dev If _amount is bigger than max available we'll draw max\n\n /// @param _cdpId Id of the CDP\n\n /// @param _joinAddr Address of the join contract for the CDP collateral\n\n /// @param _amount Amount of collateral to draw\n\n function drawCollateral(uint _cdpId, address _joinAddr, uint _amount) internal returns (uint) {\n\n uint frobAmount = _amount;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n frobAmount = _amount * (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n manager.frob(_cdpId, -toPositiveInt(frobAmount), 0);\n\n manager.flux(_cdpId, address(this), frobAmount);\n\n\n\n Join(_joinAddr).exit(address(this), _amount);\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n Join(_joinAddr).gem().withdraw(_amount); // Weth -> Eth\n\n }\n\n\n\n return _amount;\n\n }\n\n\n\n /// @notice Paybacks Dai debt\n\n /// @dev If the _daiAmount is bigger than the whole debt, returns extra Dai\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _daiAmount Amount of Dai to payback\n\n /// @param _owner Address that owns the DSProxy that owns the CDP\n\n function paybackDebt(uint _cdpId, bytes32 _ilk, uint _daiAmount, address _owner) internal {\n\n address urn = manager.urns(_cdpId);\n\n\n\n uint wholeDebt = getAllDebt(VAT_ADDRESS, urn, urn, _ilk);\n\n\n\n if (_daiAmount > wholeDebt) {\n\n ERC20(DAI_ADDRESS).transfer(_owner, sub(_daiAmount, wholeDebt));\n\n _daiAmount = wholeDebt;\n\n }\n\n\n\n if (ERC20(DAI_ADDRESS).allowance(address(this), DAI_JOIN_ADDRESS) == 0) {\n\n ERC20(DAI_ADDRESS).approve(DAI_JOIN_ADDRESS, uint(-1));\n\n }\n\n\n\n daiJoin.join(urn, _daiAmount);\n\n\n\n manager.frob(_cdpId, 0, normalizePaybackAmount(VAT_ADDRESS, urn, _ilk));\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Dai amount that is converted\n\n /// @param _gasCost Used for Monitor, estimated gas cost of tx\n\n /// @param _owner The address that controlls the DSProxy that owns the CDP\n\n function getFee(uint _amount, uint _gasCost, address _owner) internal returns (uint feeAmount) {\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(_owner)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(_owner);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n uint ethDaiPrice = getPrice(ETH_ILK);\n\n _gasCost = rmul(_gasCost, ethDaiPrice);\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n ERC20(DAI_ADDRESS).transfer(WALLET_ID, feeAmount);\n\n }\n\n\n\n /// @notice Gets the maximum amount of collateral available to draw\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _joinAddr Joind address of collateral\n\n /// @dev Substracts 10 wei to aviod rounding error later on\n\n function getMaxCollateral(uint _cdpId, bytes32 _ilk, address _joinAddr) public view returns (uint) {\n\n uint price = getPrice(_ilk);\n\n\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n (, uint mat) = Spotter(SPOTTER_ADDRESS).ilks(_ilk);\n\n\n\n uint maxCollateral = sub(sub(collateral, (div(mul(mat, debt), price))), 10);\n\n\n\n uint normalizeMaxCollateral = maxCollateral;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n normalizeMaxCollateral = maxCollateral / (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n return normalizeMaxCollateral;\n\n }\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @dev Substracts 10 wei to aviod rounding error later on\n\n function getMaxDebt(uint _cdpId, bytes32 _ilk) public virtual view returns (uint) {\n\n uint price = getPrice(_ilk);\n\n\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(sub(div(mul(collateral, price), mat), debt), 10);\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint) {\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (,,uint spot,,) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n /// @notice Gets CDP ratio\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getRatio(uint _cdpId, bytes32 _ilk) public view returns (uint) {\n\n uint price = getPrice( _ilk);\n\n\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n if (debt == 0) return 0;\n\n\n\n return rdiv(wmul(collateral, price), debt);\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt, price, ilk)\n\n /// @param _cdpId Id of the CDP\n\n function getCdpDetailedInfo(uint _cdpId) public view returns (uint collateral, uint debt, uint price, bytes32 ilk) {\n\n address urn = manager.urns(_cdpId);\n\n ilk = manager.ilks(_cdpId);\n\n\n\n (collateral, debt) = vat.urns(ilk, urn);\n\n (,uint rate,,,) = vat.ilks(ilk);\n\n\n\n debt = rmul(debt, rate);\n\n price = getPrice(ilk);\n\n }\n\n\n\n}\n\ncontract MCDSaverTaker is MCDSaverProxy, GasBurner {\n\n\n\n address payable public constant MCD_SAVER_FLASH_LOAN = 0x28e444b53a9e7E3F6fFe50E93b18dCce7838551F;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n function boostWithLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable burnGas(25) {\n\n uint256 maxDebt = getMaxDebt(_cdpId, manager.ilks(_cdpId));\n\n\n\n if (maxDebt >= _exchangeData.srcAmount) {\n\n boost(_exchangeData, _cdpId, _gasCost, _joinAddr);\n\n return;\n\n }\n\n\n\n MCD_SAVER_FLASH_LOAN.transfer(msg.value); // 0x fee\n\n\n\n uint256 loanAmount = sub(_exchangeData.srcAmount, maxDebt);\n\n uint maxLiq = getAvailableLiquidity(DAI_JOIN_ADDRESS);\n\n\n\n loanAmount = loanAmount > maxLiq ? maxLiq : loanAmount;\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 1);\n\n\n\n bytes memory paramsData = abi.encode(packExchangeData(_exchangeData), _cdpId, _gasCost, _joinAddr, false);\n\n\n\n lendingPool.flashLoan(MCD_SAVER_FLASH_LOAN, DAI_ADDRESS, loanAmount, paramsData);\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 0);\n\n }\n\n\n\n function repayWithLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable burnGas(25) {\n\n uint256 maxColl = getMaxCollateral(_cdpId, manager.ilks(_cdpId), _joinAddr);\n\n\n\n if (maxColl >= _exchangeData.srcAmount) {\n\n repay(_exchangeData, _cdpId, _gasCost, _joinAddr);\n\n return;\n\n }\n\n\n\n MCD_SAVER_FLASH_LOAN.transfer(msg.value); // 0x fee\n\n\n\n uint256 loanAmount = sub(_exchangeData.srcAmount, maxColl);\n\n uint maxLiq = getAvailableLiquidity(_joinAddr);\n\n\n\n loanAmount = loanAmount > maxLiq ? maxLiq : loanAmount;\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 1);\n\n\n\n bytes memory paramsData = abi.encode(packExchangeData(_exchangeData), _cdpId, _gasCost, _joinAddr, true);\n\n\n\n lendingPool.flashLoan(MCD_SAVER_FLASH_LOAN, getAaveCollAddr(_joinAddr), loanAmount, paramsData);\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 0);\n\n }\n\n\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getMaxDebt(uint256 _cdpId, bytes32 _ilk) public override view returns (uint256) {\n\n uint256 price = getPrice(_ilk);\n\n\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (uint256 collateral, uint256 debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(wdiv(wmul(collateral, price), mat), debt);\n\n }\n\n\n\n function getAaveCollAddr(address _joinAddr) internal view returns (address) {\n\n if (_joinAddr == 0x2F0b23f53734252Bda2277357e97e1517d6B042A\n\n || _joinAddr == 0x775787933e92b709f2a3C70aa87999696e74A9F8) {\n\n return KYBER_ETH_ADDRESS;\n\n } else if (_joinAddr == DAI_JOIN_ADDRESS) {\n\n return DAI_ADDRESS;\n\n } else\n\n {\n\n return getCollateralAddr(_joinAddr);\n\n }\n\n }\n\n\n\n function getAvailableLiquidity(address _joinAddr) internal view returns (uint liquidity) {\n\n address tokenAddr = getAaveCollAddr(_joinAddr);\n\n\n\n if (tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n }\n\n\n\n function _packData(\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[6] memory numData, address[5] memory addrData, bytes memory callData) {\n\n\n\n numData = [\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x,\n\n _cdpId,\n\n _gasCost\n\n ];\n\n\n\n addrData = [\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper,\n\n _joinAddr\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n\n\n}\n\ncontract SavingsProxy is DSRSavingsProtocol, CompoundSavingsProtocol {\n\n address public constant ADAI_ADDRESS = 0xfC1E690f61EFd961294b3e1Ce3313fBD8aa4f85d;\n\n\n\n address public constant SAVINGS_DYDX_ADDRESS = 0x03b1565e070df392e48e7a8e01798C4B00E534A5;\n\n address public constant SAVINGS_AAVE_ADDRESS = 0x535B9035E9bA8D7efe0FeAEac885fb65b303E37C;\n\n address public constant NEW_IDAI_ADDRESS = 0x493C57C4763932315A328269E1ADaD09653B9081;\n\n\n\n address public constant COMP_ADDRESS = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n address public constant SAVINGS_LOGGER_ADDRESS = 0x89b3635BD2bAD145C6f92E82C9e83f06D5654984;\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n enum SavingsProtocol {Compound, Dydx, Fulcrum, Dsr, Aave}\n\n\n\n function deposit(SavingsProtocol _protocol, uint256 _amount) public {\n\n if (_protocol == SavingsProtocol.Dsr) {\n\n dsrDeposit(_amount, true);\n\n } else if (_protocol == SavingsProtocol.Compound) {\n\n compDeposit(msg.sender, _amount);\n\n } else {\n\n _deposit(_protocol, _amount, true);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logDeposit(msg.sender, uint8(_protocol), _amount);\n\n }\n\n\n\n function withdraw(SavingsProtocol _protocol, uint256 _amount) public {\n\n if (_protocol == SavingsProtocol.Dsr) {\n\n dsrWithdraw(_amount, true);\n\n } else if (_protocol == SavingsProtocol.Compound) {\n\n compWithdraw(msg.sender, _amount);\n\n } else {\n\n _withdraw(_protocol, _amount, true);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logWithdraw(msg.sender, uint8(_protocol), _amount);\n\n }\n\n\n\n function swap(SavingsProtocol _from, SavingsProtocol _to, uint256 _amount) public {\n\n if (_from == SavingsProtocol.Dsr) {\n\n dsrWithdraw(_amount, false);\n\n } else if (_from == SavingsProtocol.Compound) {\n\n compWithdraw(msg.sender, _amount);\n\n } else {\n\n _withdraw(_from, _amount, false);\n\n }\n\n\n\n // possible to withdraw 1-2 wei less than actual amount due to division precision\n\n // so we deposit all amount on DSProxy\n\n uint256 amountToDeposit = ERC20(DAI_ADDRESS).balanceOf(address(this));\n\n\n\n if (_to == SavingsProtocol.Dsr) {\n\n dsrDeposit(amountToDeposit, false);\n\n } else if (_from == SavingsProtocol.Compound) {\n\n compDeposit(msg.sender, _amount);\n\n } else {\n\n _deposit(_to, amountToDeposit, false);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logSwap(\n\n msg.sender,\n\n uint8(_from),\n\n uint8(_to),\n\n _amount\n\n );\n\n }\n\n\n\n function withdrawDai() public {\n\n ERC20(DAI_ADDRESS).transfer(msg.sender, ERC20(DAI_ADDRESS).balanceOf(address(this)));\n\n }\n\n\n\n function claimComp() public {\n\n ComptrollerInterface(COMP_ADDRESS).claimComp(address(this));\n\n }\n\n\n\n function getAddress(SavingsProtocol _protocol) public pure returns (address) {\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n return SAVINGS_DYDX_ADDRESS;\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Aave) {\n\n return SAVINGS_AAVE_ADDRESS;\n\n }\n\n }\n\n\n\n function _deposit(SavingsProtocol _protocol, uint256 _amount, bool _fromUser) internal {\n\n if (_fromUser) {\n\n ERC20(DAI_ADDRESS).transferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveDeposit(_protocol);\n\n\n\n ProtocolInterface(getAddress(_protocol)).deposit(address(this), _amount);\n\n\n\n endAction(_protocol);\n\n }\n\n\n\n function _withdraw(SavingsProtocol _protocol, uint256 _amount, bool _toUser) public {\n\n approveWithdraw(_protocol);\n\n\n\n ProtocolInterface(getAddress(_protocol)).withdraw(address(this), _amount);\n\n\n\n endAction(_protocol);\n\n\n\n if (_toUser) {\n\n withdrawDai();\n\n }\n\n }\n\n\n\n function endAction(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n setDydxOperator(false);\n\n }\n\n }\n\n\n\n function approveDeposit(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Compound || _protocol == SavingsProtocol.Fulcrum || _protocol == SavingsProtocol.Aave) {\n\n ERC20(DAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n ERC20(DAI_ADDRESS).approve(SOLO_MARGIN_ADDRESS, uint256(-1));\n\n setDydxOperator(true);\n\n }\n\n }\n\n\n\n function approveWithdraw(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Compound) {\n\n ERC20(NEW_CDAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n setDydxOperator(true);\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Fulcrum) {\n\n ERC20(NEW_IDAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Aave) {\n\n ERC20(ADAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n }\n\n\n\n function setDydxOperator(bool _trusted) internal {\n\n ISoloMargin.OperatorArg[] memory operatorArgs = new ISoloMargin.OperatorArg[](1);\n\n operatorArgs[0] = ISoloMargin.OperatorArg({\n\n operator: getAddress(SavingsProtocol.Dydx),\n\n trusted: _trusted\n\n });\n\n\n\n ISoloMargin(SOLO_MARGIN_ADDRESS).setOperators(operatorArgs);\n\n }\n\n}\n\ncontract LoanShifterReceiver is SaverExchangeCore, FlashLoanReceiverBase, AdminAuth {\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x597C52281b31B9d949a9D8fEbA08F7A2530a965e);\n\n\n\n struct ParamData {\n\n bytes proxyData1;\n\n bytes proxyData2;\n\n address proxy;\n\n address debtAddr;\n\n uint8 protocol1;\n\n uint8 protocol2;\n\n uint8 swapType;\n\n }\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (ParamData memory paramData, ExchangeData memory exchangeData)\n\n = packFunctionCall(_amount, _fee, _params);\n\n\n\n address protocolAddr1 = shifterRegistry.getAddr(getNameByProtocol(paramData.protocol1));\n\n address protocolAddr2 = shifterRegistry.getAddr(getNameByProtocol(paramData.protocol2));\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendToProxy(payable(paramData.proxy), _reserve, _amount);\n\n\n\n // Execute the Close/Change debt operation\n\n DSProxyInterface(paramData.proxy).execute(protocolAddr1, paramData.proxyData1);\n\n\n\n if (paramData.swapType == 1) { // COLL_SWAP\n\n exchangeData.srcAmount = getBalance(exchangeData.srcAddr);\n\n (, uint amount) = _sell(exchangeData);\n\n\n\n sendToProxy(payable(paramData.proxy), exchangeData.destAddr, amount);\n\n } else if (paramData.swapType == 2) { // DEBT_SWAP\n\n exchangeData.destAmount = (_amount + _fee);\n\n _buy(exchangeData);\n\n\n\n // Send extra to DSProxy\n\n sendToProxy(payable(paramData.proxy), exchangeData.srcAddr, ERC20(exchangeData.srcAddr).balanceOf(address(this)));\n\n\n\n } else { // NO_SWAP just send tokens to proxy\n\n sendToProxy(payable(paramData.proxy), exchangeData.srcAddr, getBalance(exchangeData.srcAddr));\n\n }\n\n\n\n // Execute the Open operation\n\n DSProxyInterface(paramData.proxy).execute(protocolAddr2, paramData.proxyData2);\n\n\n\n // Repay FL\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params)\n\n internal pure returns (ParamData memory paramData, ExchangeData memory exchangeData) {\n\n\n\n (\n\n uint[8] memory numData, // collAmount, debtAmount, id1, id2, srcAmount, destAmount, minPrice, price0x\n\n address[8] memory addrData, // addrLoan1, addrLoan2, debtAddr1, debtAddr2, srcAddr, destAddr, exchangeAddr, wrapper\n\n uint8[3] memory enumData, // fromProtocol, toProtocol, swapType\n\n bytes memory callData,\n\n address proxy\n\n )\n\n = abi.decode(_params, (uint256[8],address[8],uint8[3],bytes,address));\n\n\n\n bytes memory proxyData1;\n\n bytes memory proxyData2;\n\n uint openDebtAmount = (_amount + _fee);\n\n\n\n if (enumData[0] == 0) { // MAKER FROM\n\n proxyData1 = abi.encodeWithSignature(\"close(uint256,address,uint256,uint256)\", numData[2], addrData[0], _amount, numData[0]);\n\n\n\n } else if(enumData[0] == 1) { // COMPOUND FROM\n\n if (enumData[2] == 2) { // DEBT_SWAP\n\n proxyData1 = abi.encodeWithSignature(\"changeDebt(address,address,uint256,uint256)\", addrData[2], addrData[3], (_amount + _fee), numData[4]);\n\n } else {\n\n proxyData1 = abi.encodeWithSignature(\"close(address,address,uint256,uint256)\", addrData[0], addrData[2], numData[0], numData[1]);\n\n }\n\n }\n\n\n\n if (enumData[1] == 0) { // MAKER TO\n\n proxyData2 = abi.encodeWithSignature(\"open(uint256,address,uint256)\", numData[3], addrData[1], openDebtAmount);\n\n } else if(enumData[1] == 1) { // COMPOUND TO\n\n if (enumData[2] == 2) { // DEBT_SWAP\n\n proxyData2 = abi.encodeWithSignature(\"repayAll(address)\", addrData[3]);\n\n } else {\n\n proxyData2 = abi.encodeWithSignature(\"open(address,address,uint256)\", addrData[1], addrData[3], openDebtAmount);\n\n }\n\n }\n\n\n\n\n\n paramData = ParamData({\n\n proxyData1: proxyData1,\n\n proxyData2: proxyData2,\n\n proxy: proxy,\n\n debtAddr: addrData[2],\n\n protocol1: enumData[0],\n\n protocol2: enumData[1],\n\n swapType: enumData[2]\n\n });\n\n\n\n exchangeData = SaverExchangeCore.ExchangeData({\n\n srcAddr: addrData[4],\n\n destAddr: addrData[5],\n\n srcAmount: numData[4],\n\n destAmount: numData[5],\n\n minPrice: numData[6],\n\n wrapper: addrData[7],\n\n exchangeAddr: addrData[6],\n\n callData: callData,\n\n price0x: numData[7]\n\n });\n\n\n\n }\n\n\n\n function sendToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n function getNameByProtocol(uint8 _proto) internal pure returns (string memory) {\n\n if (_proto == 0) {\n\n return \"MCD_SHIFTER\";\n\n } else if (_proto == 1) {\n\n return \"COMP_SHIFTER\";\n\n }\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n}\n\ncontract CompShifter is CompoundSaverHelper {\n\n\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n function getLoanAmount(uint _cdpId, address _joinAddr) public returns(uint loanAmount) {\n\n return getWholeDebt(_cdpId, _joinAddr);\n\n }\n\n\n\n function getWholeDebt(uint _cdpId, address _joinAddr) public returns(uint loanAmount) {\n\n CTokenInterface(_joinAddr).accrueInterest();\n\n return CTokenInterface(_joinAddr).borrowBalanceCurrent(msg.sender);\n\n }\n\n\n\n function close(\n\n address _cCollAddr,\n\n address _cBorrowAddr,\n\n uint _collAmount,\n\n uint _debtAmount\n\n ) public {\n\n address collAddr = getUnderlyingAddr(_cCollAddr);\n\n\n\n // payback debt\n\n paybackDebt(_debtAmount, _cBorrowAddr, getUnderlyingAddr(_cBorrowAddr), tx.origin);\n\n\n\n // draw coll\n\n if (CTokenInterface(_cBorrowAddr).borrowBalanceCurrent(address(this)) == 0) {\n\n uint cTokenBalance = CTokenInterface(_cCollAddr).balanceOf(address(this));\n\n require(CTokenInterface(_cCollAddr).redeem(cTokenBalance) == 0);\n\n } else {\n\n require(CTokenInterface(_cCollAddr).redeemUnderlying(_collAmount) == 0);\n\n }\n\n\n\n // Send back money to repay FL\n\n if (collAddr == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(collAddr).transfer(msg.sender, ERC20(collAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function changeDebt(\n\n address _cBorrowAddrOld,\n\n address _cBorrowAddrNew,\n\n uint _debtAmountOld,\n\n uint _debtAmountNew\n\n ) public {\n\n\n\n address borrowAddrNew = getUnderlyingAddr(_cBorrowAddrNew);\n\n\n\n // payback debt in one token\n\n paybackDebt(_debtAmountOld, _cBorrowAddrOld, getUnderlyingAddr(_cBorrowAddrOld), tx.origin);\n\n\n\n // draw debt in another one\n\n borrowCompound(_cBorrowAddrNew, _debtAmountNew);\n\n\n\n // Send back money to repay FL\n\n if (borrowAddrNew == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(borrowAddrNew).transfer(msg.sender, ERC20(borrowAddrNew).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function open(\n\n address _cCollAddr,\n\n address _cBorrowAddr,\n\n uint _debtAmount\n\n ) public {\n\n\n\n address collAddr = getUnderlyingAddr(_cCollAddr);\n\n address borrowAddr = getUnderlyingAddr(_cBorrowAddr);\n\n\n\n uint collAmount = 0;\n\n\n\n if (collAddr == ETH_ADDRESS) {\n\n collAmount = address(this).balance;\n\n } else {\n\n collAmount = ERC20(collAddr).balanceOf(address(this));\n\n }\n\n\n\n depositCompound(collAddr, _cCollAddr, collAmount);\n\n\n\n // draw debt\n\n borrowCompound(_cBorrowAddr, _debtAmount);\n\n\n\n // Send back money to repay FL\n\n if (borrowAddr == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(borrowAddr).transfer(msg.sender, ERC20(borrowAddr).balanceOf(address(this)));\n\n }\n\n\n\n }\n\n\n\n function repayAll(address _cTokenAddr) public {\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n uint amount = ERC20(tokenAddr).balanceOf(address(this));\n\n\n\n if (amount != 0) {\n\n paybackDebt(amount, _cTokenAddr, tokenAddr, tx.origin);\n\n }\n\n }\n\n\n\n function depositCompound(address _tokenAddr, address _cTokenAddr, uint _amount) internal {\n\n approveCToken(_tokenAddr, _cTokenAddr);\n\n\n\n enterMarket(_cTokenAddr);\n\n\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0, \"mint error\");\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: _amount}();\n\n }\n\n }\n\n\n\n function borrowCompound(address _cTokenAddr, uint _amount) internal {\n\n enterMarket(_cTokenAddr);\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n }\n\n\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n}\n\ncontract McdShifter is MCDSaverProxy {\n\n\n\n address public constant OPEN_PROXY_ACTIONS = 0x6d0984E80a86f26c0dd564ca0CF74a8E9Da03305;\n\n\n\n function getLoanAmount(uint _cdpId, address _joinAddr) public view virtual returns(uint loanAmount) {\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n (, uint rate,,,) = vat.ilks(ilk);\n\n (, uint art) = vat.urns(ilk, manager.urns(_cdpId));\n\n uint dai = vat.dai(manager.urns(_cdpId));\n\n\n\n uint rad = sub(mul(art, rate), dai);\n\n loanAmount = rad / RAY;\n\n\n\n loanAmount = mul(loanAmount, RAY) < rad ? loanAmount + 1 : loanAmount;\n\n }\n\n\n\n function close(\n\n uint _cdpId,\n\n address _joinAddr,\n\n uint _loanAmount,\n\n uint _collateral\n\n ) public {\n\n address owner = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n (uint maxColl, ) = getCdpInfo(manager, _cdpId, ilk);\n\n\n\n // repay dai debt cdp\n\n paybackDebt(_cdpId, ilk, _loanAmount, owner);\n\n\n\n maxColl = _collateral > maxColl ? maxColl : _collateral;\n\n\n\n // withdraw collateral from cdp\n\n drawMaxCollateral(_cdpId, _joinAddr, maxColl);\n\n\n\n // send back to msg.sender\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20 collToken = ERC20(getCollateralAddr(_joinAddr));\n\n collToken.transfer(msg.sender, collToken.balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function open(\n\n uint _cdpId,\n\n address _joinAddr,\n\n uint _debtAmount\n\n ) public {\n\n\n\n uint collAmount = 0;\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n collAmount = address(this).balance;\n\n } else {\n\n collAmount = ERC20(address(Join(_joinAddr).gem())).balanceOf(address(this));\n\n }\n\n\n\n if (_cdpId == 0) {\n\n openAndWithdraw(collAmount, _debtAmount, address(this), _joinAddr);\n\n } else {\n\n // add collateral\n\n addCollateral(_cdpId, _joinAddr, collAmount);\n\n // draw debt\n\n drawDai(_cdpId, manager.ilks(_cdpId), _debtAmount);\n\n }\n\n\n\n // transfer to repay FL\n\n ERC20(DAI_ADDRESS).transfer(msg.sender, ERC20(DAI_ADDRESS).balanceOf(address(this)));\n\n\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function openAndWithdraw(uint _collAmount, uint _debtAmount, address _proxy, address _joinAddrTo) internal {\n\n bytes32 ilk = Join(_joinAddrTo).ilk();\n\n\n\n if (_joinAddrTo == ETH_JOIN_ADDRESS) {\n\n MCDCreateProxyActions(OPEN_PROXY_ACTIONS).openLockETHAndDraw{value: address(this).balance}(\n\n address(manager),\n\n JUG_ADDRESS,\n\n ETH_JOIN_ADDRESS,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _debtAmount,\n\n _proxy\n\n );\n\n } else {\n\n ERC20(getCollateralAddr(_joinAddrTo)).approve(OPEN_PROXY_ACTIONS, uint256(-1));\n\n\n\n MCDCreateProxyActions(OPEN_PROXY_ACTIONS).openLockGemAndDraw(\n\n address(manager),\n\n JUG_ADDRESS,\n\n _joinAddrTo,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _collAmount,\n\n _debtAmount,\n\n true,\n\n _proxy\n\n );\n\n }\n\n }\n\n\n\n\n\n function drawMaxCollateral(uint _cdpId, address _joinAddr, uint _amount) internal returns (uint) {\n\n manager.frob(_cdpId, -toPositiveInt(_amount), 0);\n\n manager.flux(_cdpId, address(this), _amount);\n\n\n\n uint joinAmount = _amount;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n joinAmount = _amount / (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n Join(_joinAddr).exit(address(this), joinAmount);\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n Join(_joinAddr).gem().withdraw(joinAmount); // Weth -> Eth\n\n }\n\n\n\n return joinAmount;\n\n }\n\n\n\n}\n\ncontract AaveSaverProxy is GasBurner, SaverExchangeCore, AaveHelper {\n\n\n\n\taddress public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n uint public constant VARIABLE_RATE = 2;\n\n\n\n\tfunction repay(ExchangeData memory _data, uint _gasCost) public payable burnGas(20) {\n\n\n\n\t\taddress lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n\t\taddress lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\t\taddress payable user = payable(getUserAddress());\n\n\n\n\t\tuint256 maxCollateral = getMaxCollateral(_data.srcAddr, address(this));\n\n\t\t// don't swap more than maxCollateral\n\n\t\t_data.srcAmount = _data.srcAmount > maxCollateral ? maxCollateral : _data.srcAmount;\n\n\n\n\t\t// redeem collateral\n\n\t\taddress aTokenCollateral = ILendingPool(lendingPoolCore).getReserveATokenAddress(_data.srcAddr);\n\n\t\tIAToken(aTokenCollateral).redeem(_data.srcAmount);\n\n\n\n\t\tuint256 destAmount = _data.srcAmount;\n\n\t\tif (_data.srcAddr != _data.destAddr) {\n\n\t\t\t// swap\n\n\t\t\t(, destAmount) = _sell(_data);\n\n\t\t\tdestAmount -= getFee(destAmount, user, _gasCost, _data.destAddr);\n\n\t\t} else {\n\n\t\t\tdestAmount -= getGasCost(destAmount, user, _gasCost, _data.destAddr);\n\n\t\t}\n\n\n\n\t\t// payback\n\n\t\tif (_data.destAddr == ETH_ADDR) {\n\n\t\t\tILendingPool(lendingPool).repay{value: destAmount}(_data.destAddr, destAmount, payable(address(this)));\n\n\t\t} else {\n\n\t\t\tapproveToken(_data.destAddr, lendingPoolCore);\n\n\t\t\tILendingPool(lendingPool).repay(_data.destAddr, destAmount, payable(address(this)));\n\n\t\t}\n\n\n\n\t\t// first return 0x fee to msg.sender as it is the address that actually sent 0x fee\n\n\t\tsendContractBalance(ETH_ADDR, tx.origin, min(address(this).balance, msg.value));\n\n\t\t// send all leftovers from dest addr to proxy owner\n\n\t\tsendFullContractBalance(_data.destAddr, user);\n\n\n\n\t\tDefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveRepay\", abi.encode(_data.srcAddr, _data.destAddr, _data.srcAmount, destAmount));\n\n\t}\n\n\n\n\tfunction boost(ExchangeData memory _data, uint _gasCost) public payable burnGas(20) {\n\n\t\taddress lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n\t\taddress lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\t\t(,,,,,,,,,bool collateralEnabled) = ILendingPool(lendingPool).getUserReserveData(_data.destAddr, address(this));\n\n\t\taddress payable user = payable(getUserAddress());\n\n\n\n\t\tuint256 maxBorrow = getMaxBorrow(_data.srcAddr, address(this));\n\n\t\t_data.srcAmount = _data.srcAmount > maxBorrow ? maxBorrow : _data.srcAmount;\n\n\n\n\t\t// borrow amount\n\n\t\tILendingPool(lendingPool).borrow(_data.srcAddr, _data.srcAmount, VARIABLE_RATE, AAVE_REFERRAL_CODE);\n\n\n\n\t\tuint256 destAmount;\n\n\t\tif (_data.destAddr != _data.srcAddr) {\n\n\t\t\t_data.srcAmount -= getFee(_data.srcAmount, user, _gasCost, _data.srcAddr);\n\n\t\t\t// swap\n\n\t\t\t(, destAmount) = _sell(_data);\n\n\t\t} else {\n\n\t\t\t_data.srcAmount -= getGasCost(_data.srcAmount, user, _gasCost, _data.srcAddr);\n\n\t\t\tdestAmount = _data.srcAmount;\n\n\t\t}\n\n\n\n\t\tif (_data.destAddr == ETH_ADDR) {\n\n\t\t\tILendingPool(lendingPool).deposit{value: destAmount}(_data.destAddr, destAmount, AAVE_REFERRAL_CODE);\n\n\t\t} else {\n\n\t\t\tapproveToken(_data.destAddr, lendingPoolCore);\n\n\t\t\tILendingPool(lendingPool).deposit(_data.destAddr, destAmount, AAVE_REFERRAL_CODE);\n\n\t\t}\n\n\n\n\t\tif (!collateralEnabled) {\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_data.destAddr, true);\n\n }\n\n\n\n\t\t// returning to msg.sender as it is the address that actually sent 0x fee\n\n\t\tsendContractBalance(ETH_ADDR, tx.origin, min(address(this).balance, msg.value));\n\n\t\t// send all leftovers from dest addr to proxy owner\n\n\t\tsendFullContractBalance(_data.destAddr, user);\n\n\n\n\t\tDefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveBoost\", abi.encode(_data.srcAddr, _data.destAddr, _data.srcAmount, destAmount));\n\n\t}\n\n}\n\ncontract CompoundLoanInfo is CompoundSafetyRatio {\n\n\n\n struct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint[] collAmounts;\n\n uint[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address cTokenAddress;\n\n address underlyingTokenAddress;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n address underlyingTokenAddress;\n\n uint supplyRate;\n\n uint borrowRate;\n\n uint exchangeRate;\n\n uint marketLiquidity;\n\n uint totalSupply;\n\n uint totalBorrow;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;\n\n\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches Compound prices for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _cTokens) public view returns (uint[] memory prices) {\n\n prices = new uint[](_cTokens.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n prices[i] = CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches Compound collateral factors for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _cTokens) public view returns (uint[] memory collFactors) {\n\n collFactors = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n (, collFactors[i]) = comp.markets(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in usd\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](assets.length),\n\n borrowAddr: new address[](assets.length),\n\n collAmounts: new uint[](assets.length),\n\n borrowAmounts: new uint[](assets.length)\n\n });\n\n\n\n uint collPos = 0;\n\n uint borrowPos = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in Usd\n\n if (cTokenBalance != 0) {\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, Exp memory tokensToUsd) = mulExp(exchangeRate, oraclePrice);\n\n\n\n data.collAddr[collPos] = asset;\n\n (, data.collAmounts[collPos]) = mulScalarTruncate(tokensToUsd, cTokenBalance);\n\n collPos++;\n\n }\n\n\n\n // Sum up debt in Usd\n\n if (borrowBalance != 0) {\n\n data.borrowAddr[borrowPos] = asset;\n\n (, data.borrowAmounts[borrowPos]) = mulScalarTruncate(oraclePrice, borrowBalance);\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _cTokens) public view returns (uint[] memory balances, uint[] memory borrows) {\n\n balances = new uint[](_cTokens.length);\n\n borrows = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; i++) {\n\n address asset = _cTokens[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, balances[i]) = mulScalarTruncate(exchangeRate, cTokenBalance);\n\n\n\n borrows[i] = borrowBalance;\n\n }\n\n\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in usd\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint[] memory ratios) {\n\n ratios = new uint[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfo[] memory tokens) {\n\n tokens = new TokenInfo[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n cTokenAddress: _cTokenAddresses[i],\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getFullTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfoFull[] memory tokens) {\n\n tokens = new TokenInfoFull[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n CTokenInterface cToken = CTokenInterface(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n supplyRate: cToken.supplyRatePerBlock(),\n\n borrowRate: cToken.borrowRatePerBlock(),\n\n exchangeRate: cToken.exchangeRateCurrent(),\n\n marketLiquidity: cToken.getCash(),\n\n totalSupply: cToken.totalSupply(),\n\n totalBorrow: cToken.totalBorrowsCurrent(),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n}\n\ncontract CompoundCreateReceiver is FlashLoanReceiverBase, SaverExchangeCore {\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x2E82103bD91053C781aaF39da17aE58ceE39d0ab);\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n constructor() public FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) {}\n\n\n\n struct CompCreateData {\n\n address payable proxyAddr;\n\n bytes proxyData;\n\n address cCollAddr;\n\n address cDebtAddr;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (CompCreateData memory compCreate, ExchangeData memory exchangeData)\n\n = packFunctionCall(_amount, _fee, _params);\n\n\n\n\n\n address leveragedAsset = _reserve;\n\n\n\n // If the assets are different\n\n if (compCreate.cCollAddr != compCreate.cDebtAddr) {\n\n (, uint sellAmount) = _sell(exchangeData);\n\n getFee(sellAmount, exchangeData.destAddr, compCreate.proxyAddr);\n\n\n\n leveragedAsset = exchangeData.destAddr;\n\n }\n\n\n\n // Send amount to DSProxy\n\n sendToProxy(compCreate.proxyAddr, leveragedAsset);\n\n\n\n address compOpenProxy = shifterRegistry.getAddr(\"COMP_SHIFTER\");\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(compCreate.proxyAddr).execute(compOpenProxy, compCreate.proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n // solhint-disable-next-line avoid-tx-origin\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (CompCreateData memory compCreate, ExchangeData memory exchangeData) {\n\n (\n\n uint[4] memory numData, // srcAmount, destAmount, minPrice, price0x\n\n address[6] memory cAddresses, // cCollAddr, cDebtAddr, srcAddr, destAddr, exchangeAddr, wrapper\n\n bytes memory callData,\n\n address proxy\n\n )\n\n = abi.decode(_params, (uint256[4],address[6],bytes,address));\n\n\n\n bytes memory proxyData = abi.encodeWithSignature(\n\n \"open(address,address,uint256)\",\n\n cAddresses[0], cAddresses[1], (_amount + _fee));\n\n\n\n exchangeData = SaverExchangeCore.ExchangeData({\n\n srcAddr: cAddresses[2],\n\n destAddr: cAddresses[3],\n\n srcAmount: numData[0],\n\n destAmount: numData[1],\n\n minPrice: numData[2],\n\n wrapper: cAddresses[5],\n\n exchangeAddr: cAddresses[4],\n\n callData: callData,\n\n price0x: numData[3]\n\n });\n\n\n\n compCreate = CompCreateData({\n\n proxyAddr: payable(proxy),\n\n proxyData: proxyData,\n\n cCollAddr: cAddresses[0],\n\n cDebtAddr: cAddresses[1]\n\n });\n\n\n\n return (compCreate, exchangeData);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n function sendToProxy(address payable _proxy, address _reserve) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, ERC20(_reserve).balanceOf(address(this)));\n\n } else {\n\n _proxy.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function getFee(uint _amount, address _tokenAddr, address _proxy) internal returns (uint feeAmount) {\n\n uint fee = 400;\n\n\n\n DSProxy proxy = DSProxy(payable(_proxy));\n\n address user = proxy.owner();\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (_tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n}\n\ncontract CompoundSaverFlashLoan is FlashLoanReceiverBase, SaverExchangeCore {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address payable public COMPOUND_SAVER_FLASH_PROXY = 0xcEAb38B5C88F33Dabe4D31BDD384E08215526632;\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n address public owner;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (bytes memory proxyData, address payable proxyAddr) = packFunctionCall(_amount, _fee, _params);\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendLoanToProxy(proxyAddr, _reserve, _amount);\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(proxyAddr).execute(COMPOUND_SAVER_FLASH_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n /// @return proxyData Formated function call data\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (bytes memory proxyData, address payable) {\n\n (\n\n bytes memory exDataBytes,\n\n address[2] memory cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 gasCost,\n\n bool isRepay,\n\n address payable proxyAddr\n\n )\n\n = abi.decode(_params, (bytes,address[2],uint256,bool,address));\n\n\n\n ExchangeData memory _exData = unpackExchangeData(exDataBytes);\n\n\n\n uint[2] memory flashLoanData = [_amount, _fee];\n\n\n\n if (isRepay) {\n\n proxyData = abi.encodeWithSignature(\"flashRepay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n } else {\n\n proxyData = abi.encodeWithSignature(\"flashBoost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n }\n\n\n\n return (proxyData, proxyAddr);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n /// @param _amount Amount of tokens\n\n function sendLoanToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n receive() external override(SaverExchangeCore, FlashLoanReceiverBase) payable {}\n\n}\n\ncontract CompoundSaverFlashProxy is SaverExchangeCore, CompoundSaverHelper {\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Repays the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashRepay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n // draw max coll\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(maxColl) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // swap max coll + loanAmount\n\n _exData.srcAmount = maxColl + _flashLoanData[0];\n\n (,swapAmount) = _sell(_exData);\n\n\n\n // get fee\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = (maxColl + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // payback debt\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // draw collateral for loanAmount + loanFee\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(collToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CompoundRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Boosts the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashBoost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n // borrow max amount\n\n uint borrowAmount = getMaxBorrow(_cAddresses[1], address(this));\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // get dfs fee\n\n borrowAmount -= getFee((borrowAmount + _flashLoanData[0]), user, _gasCost, _cAddresses[1]);\n\n _exData.srcAmount = (borrowAmount + _flashLoanData[0]);\n\n\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = (borrowAmount + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // deposit swaped collateral\n\n depositCollateral(collToken, _cAddresses[0], swapAmount);\n\n\n\n // borrow token to repay flash loan\n\n require(CTokenInterface(_cAddresses[1]).borrow(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(borrowToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CompoundBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Helper method to deposit tokens in Compound\n\n /// @param _collToken Token address of the collateral\n\n /// @param _cCollToken CToken address of the collateral\n\n /// @param _depositAmount Amount to deposit\n\n function depositCollateral(address _collToken, address _cCollToken, uint _depositAmount) internal {\n\n approveCToken(_collToken, _cCollToken);\n\n\n\n if (_collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cCollToken).mint(_depositAmount) == 0);\n\n } else {\n\n CEtherInterface(_cCollToken).mint{value: _depositAmount}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice Returns the tokens/ether to the msg.sender which is the FL contract\n\n /// @param _tokenAddr Address of token which we return\n\n /// @param _amount Amount to return\n\n function returnFlashLoan(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, _amount);\n\n }\n\n\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n}\n\ncontract CompoundSaverProxy is CompoundSaverHelper, SaverExchangeCore {\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Withdraws collateral, converts to borrowed token and repays debt\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n uint collAmount = (_exData.srcAmount > maxColl) ? maxColl : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(collAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n _exData.srcAmount = collAmount;\n\n\n\n (, swapAmount) = _sell(_exData);\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = collAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CompoundRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Borrows token, converts to collateral, and adds to position\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint borrowAmount = (_exData.srcAmount > maxBorrow) ? maxBorrow : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n borrowAmount -= getFee(borrowAmount, user, _gasCost, _cAddresses[1]);\n\n\n\n _exData.srcAmount = borrowAmount;\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = borrowAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n approveCToken(collToken, _cAddresses[0]);\n\n\n\n if (collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cAddresses[0]).mint(swapAmount) == 0);\n\n } else {\n\n CEtherInterface(_cAddresses[0]).mint{value: swapAmount}(); // reverts on fail\n\n }\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CompoundBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n}\n\ncontract CreamSaverFlashLoan is FlashLoanReceiverBase, SaverExchangeCore {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address payable public COMPOUND_SAVER_FLASH_PROXY = 0x1e012554891d271eDc80ba8eB146EA5FF596fA51;\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n address public owner;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (bytes memory proxyData, address payable proxyAddr) = packFunctionCall(_amount, _fee, _params);\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendLoanToProxy(proxyAddr, _reserve, _amount);\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(proxyAddr).execute(COMPOUND_SAVER_FLASH_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n /// @return proxyData Formated function call data\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (bytes memory proxyData, address payable) {\n\n (\n\n bytes memory exDataBytes,\n\n address[2] memory cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 gasCost,\n\n bool isRepay,\n\n address payable proxyAddr\n\n )\n\n = abi.decode(_params, (bytes,address[2],uint256,bool,address));\n\n\n\n ExchangeData memory _exData = unpackExchangeData(exDataBytes);\n\n\n\n uint[2] memory flashLoanData = [_amount, _fee];\n\n\n\n if (isRepay) {\n\n proxyData = abi.encodeWithSignature(\"flashRepay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n } else {\n\n proxyData = abi.encodeWithSignature(\"flashBoost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n }\n\n\n\n return (proxyData, proxyAddr);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n /// @param _amount Amount of tokens\n\n function sendLoanToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n receive() external override(SaverExchangeCore, FlashLoanReceiverBase) payable {}\n\n}\n\ncontract CreamSaverFlashProxy is SaverExchangeCore, CreamSaverHelper {\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Repays the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashRepay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n // draw max coll\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(maxColl) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // swap max coll + loanAmount\n\n _exData.srcAmount = maxColl + _flashLoanData[0];\n\n (,swapAmount) = _sell(_exData);\n\n\n\n // get fee\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = (maxColl + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // payback debt\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // draw collateral for loanAmount + loanFee\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(collToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CreamRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Boosts the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashBoost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n // borrow max amount\n\n uint borrowAmount = getMaxBorrow(_cAddresses[1], address(this));\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // get dfs fee\n\n borrowAmount -= getFee((borrowAmount + _flashLoanData[0]), user, _gasCost, _cAddresses[1]);\n\n _exData.srcAmount = (borrowAmount + _flashLoanData[0]);\n\n\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = (borrowAmount + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // deposit swaped collateral\n\n depositCollateral(collToken, _cAddresses[0], swapAmount);\n\n\n\n // borrow token to repay flash loan\n\n require(CTokenInterface(_cAddresses[1]).borrow(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(borrowToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CreamBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Helper method to deposit tokens in Compound\n\n /// @param _collToken Token address of the collateral\n\n /// @param _cCollToken CToken address of the collateral\n\n /// @param _depositAmount Amount to deposit\n\n function depositCollateral(address _collToken, address _cCollToken, uint _depositAmount) internal {\n\n approveCToken(_collToken, _cCollToken);\n\n\n\n if (_collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cCollToken).mint(_depositAmount) == 0);\n\n } else {\n\n CEtherInterface(_cCollToken).mint{value: _depositAmount}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice Returns the tokens/ether to the msg.sender which is the FL contract\n\n /// @param _tokenAddr Address of token which we return\n\n /// @param _amount Amount to return\n\n function returnFlashLoan(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, _amount);\n\n }\n\n\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n}\n\ncontract CreamSaverProxy is CreamSaverHelper, SaverExchangeCore {\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Withdraws collateral, converts to borrowed token and repays debt\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n uint collAmount = (_exData.srcAmount > maxColl) ? maxColl : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(collAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n (, swapAmount) = _sell(_exData);\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = collAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CreamRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Borrows token, converts to collateral, and adds to position\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint borrowAmount = (_exData.srcAmount > maxBorrow) ? maxBorrow : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n borrowAmount -= getFee(borrowAmount, user, _gasCost, _cAddresses[1]);\n\n\n\n _exData.srcAmount = borrowAmount;\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = borrowAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n approveCToken(collToken, _cAddresses[0]);\n\n\n\n if (collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cAddresses[0]).mint(swapAmount) == 0);\n\n } else {\n\n CEtherInterface(_cAddresses[0]).mint{value: swapAmount}(); // reverts on fail\n\n }\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CreamBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n}\n\ncontract SaverExchange is SaverExchangeCore, AdminAuth, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint256 public constant SERVICE_FEE = 800; // 0.125% Fee\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n uint public burnAmount = 10;\n\n\n\n /// @notice Takes a src amount of tokens and converts it into the dest token\n\n /// @dev Takes fee from the _srcAmount before the exchange\n\n /// @param exData [srcAddr, destAddr, srcAmount, destAmount, minPrice, exchangeType, exchangeAddr, callData, price0x]\n\n /// @param _user User address who called the exchange\n\n function sell(ExchangeData memory exData, address payable _user) public payable burnGas(burnAmount) {\n\n\n\n // take fee\n\n uint dfsFee = getFee(exData.srcAmount, exData.srcAddr);\n\n exData.srcAmount = sub(exData.srcAmount, dfsFee);\n\n\n\n // Perform the exchange\n\n (address wrapper, uint destAmount) = _sell(exData);\n\n\n\n // send back any leftover ether or tokens\n\n sendLeftover(exData.srcAddr, exData.destAddr, _user);\n\n\n\n // log the event\n\n logger.Log(address(this), msg.sender, \"ExchangeSell\", abi.encode(wrapper, exData.srcAddr, exData.destAddr, exData.srcAmount, destAmount));\n\n }\n\n\n\n /// @notice Takes a dest amount of tokens and converts it from the src token\n\n /// @dev Send always more than needed for the swap, extra will be returned\n\n /// @param exData [srcAddr, destAddr, srcAmount, destAmount, minPrice, exchangeType, exchangeAddr, callData, price0x]\n\n /// @param _user User address who called the exchange\n\n function buy(ExchangeData memory exData, address payable _user) public payable burnGas(burnAmount){\n\n\n\n uint dfsFee = getFee(exData.srcAmount, exData.srcAddr);\n\n exData.srcAmount = sub(exData.srcAmount, dfsFee);\n\n\n\n // Perform the exchange\n\n (address wrapper, uint srcAmount) = _buy(exData);\n\n\n\n // send back any leftover ether or tokens\n\n sendLeftover(exData.srcAddr, exData.destAddr, _user);\n\n\n\n // log the event\n\n logger.Log(address(this), msg.sender, \"ExchangeBuy\", abi.encode(wrapper, exData.srcAddr, exData.destAddr, srcAmount, exData.destAmount));\n\n\n\n }\n\n\n\n /// @notice Takes a feePercentage and sends it to wallet\n\n /// @param _amount Dai amount of the whole trade\n\n /// @param _token Address of the token\n\n /// @return feeAmount Amount in Dai owner earned on the fee\n\n function getFee(uint256 _amount, address _token) internal returns (uint256 feeAmount) {\n\n uint256 fee = SERVICE_FEE;\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(msg.sender)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(msg.sender);\n\n }\n\n\n\n if (fee == 0) {\n\n feeAmount = 0;\n\n } else {\n\n feeAmount = _amount / fee;\n\n if (_token == KYBER_ETH_ADDRESS) {\n\n WALLET_ID.transfer(feeAmount);\n\n } else {\n\n ERC20(_token).safeTransfer(WALLET_ID, feeAmount);\n\n }\n\n }\n\n }\n\n\n\n /// @notice Changes the amount of gas token we burn for each call\n\n /// @dev Only callable by the owner\n\n /// @param _newBurnAmount New amount of gas tokens to be burned\n\n function changeBurnAmount(uint _newBurnAmount) public {\n\n require(owner == msg.sender);\n\n\n\n burnAmount = _newBurnAmount;\n\n }\n\n\n\n}\n\ncontract MCDSaverFlashLoan is MCDSaverProxy, AdminAuth, FlashLoanReceiverBase {\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n struct SaverData {\n\n uint cdpId;\n\n uint gasCost;\n\n uint loanAmount;\n\n uint fee;\n\n address joinAddr;\n\n }\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n //check the contract has the specified balance\n\n require(_amount <= getBalanceInternal(address(this), _reserve),\n\n \"Invalid balance for the contract\");\n\n\n\n (\n\n bytes memory exDataBytes,\n\n uint cdpId,\n\n uint gasCost,\n\n address joinAddr,\n\n bool isRepay\n\n )\n\n = abi.decode(_params, (bytes,uint256,uint256,address,bool));\n\n\n\n ExchangeData memory exchangeData = unpackExchangeData(exDataBytes);\n\n\n\n SaverData memory saverData = SaverData({\n\n cdpId: cdpId,\n\n gasCost: gasCost,\n\n loanAmount: _amount,\n\n fee: _fee,\n\n joinAddr: joinAddr\n\n });\n\n\n\n if (isRepay) {\n\n repayWithLoan(exchangeData, saverData);\n\n } else {\n\n boostWithLoan(exchangeData, saverData);\n\n }\n\n\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function boostWithLoan(\n\n ExchangeData memory _exchangeData,\n\n SaverData memory _saverData\n\n ) internal {\n\n\n\n address user = getOwner(manager, _saverData.cdpId);\n\n\n\n // Draw users Dai\n\n uint maxDebt = getMaxDebt(_saverData.cdpId, manager.ilks(_saverData.cdpId));\n\n uint daiDrawn = drawDai(_saverData.cdpId, manager.ilks(_saverData.cdpId), maxDebt);\n\n\n\n // Calc. fees\n\n uint dsfFee = getFee((daiDrawn + _saverData.loanAmount), _saverData.gasCost, user);\n\n uint afterFee = (daiDrawn + _saverData.loanAmount) - dsfFee;\n\n\n\n // Swap\n\n _exchangeData.srcAmount = afterFee;\n\n (, uint swapedAmount) = _sell(_exchangeData);\n\n\n\n // Return collateral\n\n addCollateral(_saverData.cdpId, _saverData.joinAddr, swapedAmount);\n\n\n\n // Draw Dai to repay the flash loan\n\n drawDai(_saverData.cdpId, manager.ilks(_saverData.cdpId), (_saverData.loanAmount + _saverData.fee));\n\n\n\n logger.Log(address(this), msg.sender, \"MCDFlashBoost\", abi.encode(_saverData.cdpId, owner, _exchangeData.srcAmount, swapedAmount));\n\n }\n\n\n\n function repayWithLoan(\n\n ExchangeData memory _exchangeData,\n\n SaverData memory _saverData\n\n ) internal {\n\n\n\n address user = getOwner(manager, _saverData.cdpId);\n\n bytes32 ilk = manager.ilks(_saverData.cdpId);\n\n\n\n // Draw collateral\n\n uint maxColl = getMaxCollateral(_saverData.cdpId, ilk, _saverData.joinAddr);\n\n uint collDrawn = drawCollateral(_saverData.cdpId, _saverData.joinAddr, maxColl);\n\n\n\n // Swap\n\n _exchangeData.srcAmount = (_saverData.loanAmount + collDrawn);\n\n (, uint swapedAmount) = _sell(_exchangeData);\n\n\n\n uint paybackAmount = (swapedAmount - getFee(swapedAmount, _saverData.gasCost, user));\n\n paybackAmount = limitLoanAmount(_saverData.cdpId, ilk, paybackAmount, user);\n\n\n\n // Payback the debt\n\n paybackDebt(_saverData.cdpId, ilk, paybackAmount, user);\n\n\n\n // Draw collateral to repay the flash loan\n\n drawCollateral(_saverData.cdpId, _saverData.joinAddr, (_saverData.loanAmount + _saverData.fee));\n\n\n\n logger.Log(address(this), msg.sender, \"MCDFlashRepay\", abi.encode(_saverData.cdpId, owner, _exchangeData.srcAmount, swapedAmount));\n\n }\n\n\n\n /// @notice Handles that the amount is not bigger than cdp debt and not dust\n\n function limitLoanAmount(uint _cdpId, bytes32 _ilk, uint _paybackAmount, address _owner) internal returns (uint256) {\n\n uint debt = getAllDebt(address(vat), manager.urns(_cdpId), manager.urns(_cdpId), _ilk);\n\n\n\n if (_paybackAmount > debt) {\n\n ERC20(DAI_ADDRESS).transfer(_owner, (_paybackAmount - debt));\n\n return debt;\n\n }\n\n\n\n uint debtLeft = debt - _paybackAmount;\n\n\n\n (,,,, uint dust) = vat.ilks(_ilk);\n\n dust = dust / 10**27;\n\n\n\n // Less than dust value\n\n if (debtLeft < dust) {\n\n uint amountOverDust = (dust - debtLeft);\n\n\n\n ERC20(DAI_ADDRESS).transfer(_owner, amountOverDust);\n\n\n\n return (_paybackAmount - amountOverDust);\n\n }\n\n\n\n return _paybackAmount;\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n\n\n}\n\ncontract CompoundFlashLoanTaker is CompoundSaverProxy, ProxyPermission, GasBurner {\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_SAVER_FLASH_LOAN = 0xCeB190A35D9D4804b9CE8d0CF79239f6949BfCcB;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n /// @notice Repays the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repayWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(25) {\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxColl || availableLiquidity == 0) {\n\n repay(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxColl);\n\n if (loanAmount > availableLiquidity) loanAmount = availableLiquidity;\n\n bytes memory encoded = packExchangeData(_exData);\n\n bytes memory paramsData = abi.encode(encoded, _cAddresses, _gasCost, true, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[0]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundFlashRepay\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[0]));\n\n }\n\n }\n\n\n\n /// @notice Boosts the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boostWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(20) {\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxBorrow || availableLiquidity == 0) {\n\n boost(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxBorrow);\n\n if (loanAmount > availableLiquidity) loanAmount = availableLiquidity;\n\n bytes memory paramsData = abi.encode(packExchangeData(_exData), _cAddresses, _gasCost, false, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[1]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundFlashBoost\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[1]));\n\n }\n\n\n\n }\n\n\n\n function getAvailableLiquidity(address _tokenAddr) internal view returns (uint liquidity) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(_tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n }\n\n}\n\ncontract CreamFlashLoanTaker is CreamSaverProxy, ProxyPermission, GasBurner {\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_SAVER_FLASH_LOAN = 0x3ceD2067c0B057611e4E2686Dbe40028962Cc625;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n /// @notice Repays the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repayWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(25) {\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxColl || availableLiquidity == 0) {\n\n repay(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxColl);\n\n bytes memory encoded = packExchangeData(_exData);\n\n bytes memory paramsData = abi.encode(encoded, _cAddresses, _gasCost, true, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[0]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamFlashRepay\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[0]));\n\n }\n\n }\n\n\n\n /// @notice Boosts the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boostWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(20) {\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxBorrow || availableLiquidity == 0) {\n\n boost(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxBorrow);\n\n bytes memory paramsData = abi.encode(packExchangeData(_exData), _cAddresses, _gasCost, false, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[1]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamFlashBoost\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[1]));\n\n }\n\n\n\n }\n\n\n\n function getAvailableLiquidity(address _tokenAddr) internal view returns (uint liquidity) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(_tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n }\n\n}\n"},"bytecode":{"kind":"string","value":"0x"},"slither":{"kind":"string","value":"{\"success\": true, \"error\": null, \"results\": {\"detectors\": [{\"check\": \"tx-origin\", \"impact\": \"Medium\", \"confidence\": \"Medium\"}, {\"check\": \"name-reused\", \"impact\": \"High\", \"confidence\": \"High\"}, {\"check\": \"erc20-interface\", \"impact\": \"Medium\", \"confidence\": \"High\"}, {\"check\": \"arbitrary-send\", \"impact\": \"High\", \"confidence\": \"Medium\"}, {\"check\": \"unchecked-lowlevel\", \"impact\": \"Medium\", 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0":{"kind":"number","value":591,"string":"591"},"address":{"kind":"string","value":"0xce593a29905951e8fc579bc092eca72577da575c"},"source_code":{"kind":"string","value":"pragma solidity 0.6.7;\n\nlibrary Address {\n\n /**\n\n * @dev Returns true if `account` is a contract.\n\n *\n\n * [IMPORTANT]\n\n * ====\n\n * It is unsafe to assume that an address for which this function returns\n\n * false is an externally-owned account (EOA) and not a contract.\n\n *\n\n * Among others, `isContract` will return false for the following\n\n * types of addresses:\n\n *\n\n * - an externally-owned account\n\n * - a contract in construction\n\n * - an address where a contract will be created\n\n * - an address where a contract lived, but was destroyed\n\n * ====\n\n */\n\n function isContract(address account) internal view returns (bool) {\n\n // This method relies on extcodesize, which returns 0 for contracts in\n\n // construction, since the code is only stored at the end of the\n\n // constructor execution.\n\n\n\n uint256 size;\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly { size := extcodesize(account) }\n\n return size > 0;\n\n }\n\n\n\n /**\n\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n\n * `recipient`, forwarding all available gas and reverting on errors.\n\n *\n\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n\n * imposed by `transfer`, making them unable to receive funds via\n\n * `transfer`. {sendValue} removes this limitation.\n\n *\n\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n\n *\n\n * IMPORTANT: because control is transferred to `recipient`, care must be\n\n * taken to not create reentrancy vulnerabilities. Consider using\n\n * {ReentrancyGuard} or the\n\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n\n */\n\n function sendValue(address payable recipient, uint256 amount) internal {\n\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n\n (bool success, ) = recipient.call{ value: amount }(\"\");\n\n require(success, \"Address: unable to send value, recipient may have reverted\");\n\n }\n\n\n\n /**\n\n * @dev Performs a Solidity function call using a low level `call`. A\n\n * plain`call` is an unsafe replacement for a function call: use this\n\n * function instead.\n\n *\n\n * If `target` reverts with a revert reason, it is bubbled up by this\n\n * function (like regular Solidity function calls).\n\n *\n\n * Returns the raw returned data. To convert to the expected return value,\n\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n\n *\n\n * Requirements:\n\n *\n\n * - `target` must be a contract.\n\n * - calling `target` with `data` must not revert.\n\n *\n\n * _Available since v3.1._\n\n */\n\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n\n return functionCall(target, data, \"Address: low-level call failed\");\n\n }\n\n\n\n /**\n\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n\n * `errorMessage` as a fallback revert reason when `target` reverts.\n\n *\n\n * _Available since v3.1._\n\n */\n\n function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n\n return _functionCallWithValue(target, data, 0, errorMessage);\n\n }\n\n\n\n /**\n\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n\n * but also transferring `value` wei to `target`.\n\n *\n\n * Requirements:\n\n *\n\n * - the calling contract must have an ETH balance of at least `value`.\n\n * - the called Solidity function must be `payable`.\n\n *\n\n * _Available since v3.1._\n\n */\n\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n\n }\n\n\n\n /**\n\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n\n *\n\n * _Available since v3.1._\n\n */\n\n function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\n\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n\n return _functionCallWithValue(target, data, value, errorMessage);\n\n }\n\n\n\n function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\n\n require(isContract(target), \"Address: call to non-contract\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls\n\n (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\n\n if (success) {\n\n return returndata;\n\n } else {\n\n // Look for revert reason and bubble it up if present\n\n if (returndata.length > 0) {\n\n // The easiest way to bubble the revert reason is using memory via assembly\n\n\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly {\n\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n\n }\n\n } else {\n\n revert(errorMessage);\n\n }\n\n }\n\n }\n\n}\n\nabstract contract Context {\n\n function _msgSender() internal view virtual returns (address payable) {\n\n return msg.sender;\n\n }\n\n\n\n function _msgData() internal view virtual returns (bytes memory) {\n\n this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n\n return msg.data;\n\n }\n\n}\n\ninterface IERC20 {\n\n /**\n\n * @dev Returns the amount of tokens in existence.\n\n */\n\n function totalSupply() external view returns (uint256);\n\n\n\n /**\n\n * @dev Returns the amount of tokens owned by `account`.\n\n */\n\n function balanceOf(address account) external view returns (uint256);\n\n\n\n /**\n\n * @dev Moves `amount` tokens from the caller's account to `recipient`.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * Emits a {Transfer} event.\n\n */\n\n function transfer(address recipient, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Returns the remaining number of tokens that `spender` will be\n\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n\n * zero by default.\n\n *\n\n * This value changes when {approve} or {transferFrom} are called.\n\n */\n\n function allowance(address owner, address spender) external view returns (uint256);\n\n\n\n /**\n\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n\n * that someone may use both the old and the new allowance by unfortunate\n\n * transaction ordering. One possible solution to mitigate this race\n\n * condition is to first reduce the spender's allowance to 0 and set the\n\n * desired value afterwards:\n\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n\n *\n\n * Emits an {Approval} event.\n\n */\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n\n * allowance mechanism. `amount` is then deducted from the caller's\n\n * allowance.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * Emits a {Transfer} event.\n\n */\n\n function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n\n * another (`to`).\n\n *\n\n * Note that `value` may be zero.\n\n */\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n\n\n /**\n\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n\n * a call to {approve}. `value` is the new allowance.\n\n */\n\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n}\n\nlibrary SafeMath {\n\n /**\n\n * @dev Returns the addition of two unsigned integers, reverting on\n\n * overflow.\n\n *\n\n * Counterpart to Solidity's `+` operator.\n\n *\n\n * Requirements:\n\n *\n\n * - Addition cannot overflow.\n\n */\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the subtraction of two unsigned integers, reverting on\n\n * overflow (when the result is negative).\n\n *\n\n * Counterpart to Solidity's `-` operator.\n\n *\n\n * Requirements:\n\n *\n\n * - Subtraction cannot overflow.\n\n */\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return sub(a, b, \"SafeMath: subtraction overflow\");\n\n }\n\n\n\n /**\n\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n\n * overflow (when the result is negative).\n\n *\n\n * Counterpart to Solidity's `-` operator.\n\n *\n\n * Requirements:\n\n *\n\n * - Subtraction cannot overflow.\n\n */\n\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the multiplication of two unsigned integers, reverting on\n\n * overflow.\n\n *\n\n * Counterpart to Solidity's `*` operator.\n\n *\n\n * Requirements:\n\n *\n\n * - Multiplication cannot overflow.\n\n */\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n\n // benefit is lost if 'b' is also tested.\n\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n\n if (a == 0) {\n\n return 0;\n\n }\n\n\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the integer division of two unsigned integers. Reverts on\n\n * division by zero. The result is rounded towards zero.\n\n *\n\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n\n * uses an invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n *\n\n * - The divisor cannot be zero.\n\n */\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return div(a, b, \"SafeMath: division by zero\");\n\n }\n\n\n\n /**\n\n * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\n\n * division by zero. The result is rounded towards zero.\n\n *\n\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n\n * uses an invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n *\n\n * - The divisor cannot be zero.\n\n */\n\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n\n * Reverts when dividing by zero.\n\n *\n\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n\n * invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n *\n\n * - The divisor cannot be zero.\n\n */\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return mod(a, b, \"SafeMath: modulo by zero\");\n\n }\n\n\n\n /**\n\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n\n * Reverts with custom message when dividing by zero.\n\n *\n\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n\n * invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n *\n\n * - The divisor cannot be zero.\n\n */\n\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b != 0, errorMessage);\n\n return a % b;\n\n }\n\n}\n\ncontract ERC20 is Context, IERC20 {\n\n using SafeMath for uint256;\n\n using Address for address;\n\n\n\n mapping (address => uint256) private _balances;\n\n\n\n mapping (address => mapping (address => uint256)) private _allowances;\n\n\n\n uint256 private _totalSupply;\n\n\n\n string private _name;\n\n string private _symbol;\n\n uint8 private _decimals;\n\n\n\n /**\n\n * @dev Sets the values for {name} and {symbol}, initializes {decimals} with\n\n * a default value of 18.\n\n *\n\n * To select a different value for {decimals}, use {_setupDecimals}.\n\n *\n\n * All three of these values are immutable: they can only be set once during\n\n * construction.\n\n */\n\n constructor (string memory name, string memory symbol) public {\n\n _name = name;\n\n _symbol = symbol;\n\n _decimals = 18;\n\n }\n\n\n\n /**\n\n * @dev Returns the name of the token.\n\n */\n\n function name() public view returns (string memory) {\n\n return _name;\n\n }\n\n\n\n /**\n\n * @dev Returns the symbol of the token, usually a shorter version of the\n\n * name.\n\n */\n\n function symbol() public view returns (string memory) {\n\n return _symbol;\n\n }\n\n\n\n /**\n\n * @dev Returns the number of decimals used to get its user representation.\n\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n\n * be displayed to a user as `5,05` (`505 / 10 ** 2`).\n\n *\n\n * Tokens usually opt for a value of 18, imitating the relationship between\n\n * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is\n\n * called.\n\n *\n\n * NOTE: This information is only used for _display_ purposes: it in\n\n * no way affects any of the arithmetic of the contract, including\n\n * {IERC20-balanceOf} and {IERC20-transfer}.\n\n */\n\n function decimals() public view returns (uint8) {\n\n return _decimals;\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-totalSupply}.\n\n */\n\n function totalSupply() public view override returns (uint256) {\n\n return _totalSupply;\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-balanceOf}.\n\n */\n\n function balanceOf(address account) public view override returns (uint256) {\n\n return _balances[account];\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-transfer}.\n\n *\n\n * Requirements:\n\n *\n\n * - `recipient` cannot be the zero address.\n\n * - the caller must have a balance of at least `amount`.\n\n */\n\n function transfer(address recipient, uint256 amount) public virtual override returns (bool) {\n\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-allowance}.\n\n */\n\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n\n return _allowances[owner][spender];\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-approve}.\n\n *\n\n * Requirements:\n\n *\n\n * - `spender` cannot be the zero address.\n\n */\n\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n\n _approve(_msgSender(), spender, amount);\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-transferFrom}.\n\n *\n\n * Emits an {Approval} event indicating the updated allowance. This is not\n\n * required by the EIP. See the note at the beginning of {ERC20};\n\n *\n\n * Requirements:\n\n * - `sender` and `recipient` cannot be the zero address.\n\n * - `sender` must have a balance of at least `amount`.\n\n * - the caller must have allowance for ``sender``'s tokens of at least\n\n * `amount`.\n\n */\n\n function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {\n\n _transfer(sender, recipient, amount);\n\n _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, \"ERC20: transfer amount exceeds allowance\"));\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n\n *\n\n * This is an alternative to {approve} that can be used as a mitigation for\n\n * problems described in {IERC20-approve}.\n\n *\n\n * Emits an {Approval} event indicating the updated allowance.\n\n *\n\n * Requirements:\n\n *\n\n * - `spender` cannot be the zero address.\n\n */\n\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n\n *\n\n * This is an alternative to {approve} that can be used as a mitigation for\n\n * problems described in {IERC20-approve}.\n\n *\n\n * Emits an {Approval} event indicating the updated allowance.\n\n *\n\n * Requirements:\n\n *\n\n * - `spender` cannot be the zero address.\n\n * - `spender` must have allowance for the caller of at least\n\n * `subtractedValue`.\n\n */\n\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, \"ERC20: decreased allowance below zero\"));\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev Moves tokens `amount` from `sender` to `recipient`.\n\n *\n\n * This is internal function is equivalent to {transfer}, and can be used to\n\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n\n *\n\n * Emits a {Transfer} event.\n\n *\n\n * Requirements:\n\n *\n\n * - `sender` cannot be the zero address.\n\n * - `recipient` cannot be the zero address.\n\n * - `sender` must have a balance of at least `amount`.\n\n */\n\n function _transfer(address sender, address recipient, uint256 amount) internal virtual {\n\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n\n\n _balances[sender] = _balances[sender].sub(amount, \"ERC20: transfer amount exceeds balance\");\n\n _balances[recipient] = _balances[recipient].add(amount);\n\n emit Transfer(sender, recipient, amount);\n\n }\n\n\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n\n * the total supply.\n\n *\n\n * Emits a {Transfer} event with `from` set to the zero address.\n\n *\n\n * Requirements\n\n *\n\n * - `to` cannot be the zero address.\n\n */\n\n function _mint(address account, uint256 amount) internal virtual {\n\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n\n\n _beforeTokenTransfer(address(0), account, amount);\n\n\n\n _totalSupply = _totalSupply.add(amount);\n\n _balances[account] = _balances[account].add(amount);\n\n emit Transfer(address(0), account, amount);\n\n }\n\n\n\n /**\n\n * @dev Destroys `amount` tokens from `account`, reducing the\n\n * total supply.\n\n *\n\n * Emits a {Transfer} event with `to` set to the zero address.\n\n *\n\n * Requirements\n\n *\n\n * - `account` cannot be the zero address.\n\n * - `account` must have at least `amount` tokens.\n\n */\n\n function _burn(address account, uint256 amount) internal virtual {\n\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n\n\n _beforeTokenTransfer(account, address(0), amount);\n\n\n\n _balances[account] = _balances[account].sub(amount, \"ERC20: burn amount exceeds balance\");\n\n _totalSupply = _totalSupply.sub(amount);\n\n emit Transfer(account, address(0), amount);\n\n }\n\n\n\n /**\n\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n\n *\n\n * This internal function is equivalent to `approve`, and can be used to\n\n * e.g. set automatic allowances for certain subsystems, etc.\n\n *\n\n * Emits an {Approval} event.\n\n *\n\n * Requirements:\n\n *\n\n * - `owner` cannot be the zero address.\n\n * - `spender` cannot be the zero address.\n\n */\n\n function _approve(address owner, address spender, uint256 amount) internal virtual {\n\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n\n }\n\n\n\n /**\n\n * @dev Sets {decimals} to a value other than the default one of 18.\n\n *\n\n * WARNING: This function should only be called from the constructor. Most\n\n * applications that interact with token contracts will not expect\n\n * {decimals} to ever change, and may work incorrectly if it does.\n\n */\n\n function _setupDecimals(uint8 decimals_) internal {\n\n _decimals = decimals_;\n\n }\n\n\n\n /**\n\n * @dev Hook that is called before any transfer of tokens. This includes\n\n * minting and burning.\n\n *\n\n * Calling conditions:\n\n *\n\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n\n * will be to transferred to `to`.\n\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n\n * - `from` and `to` are never both zero.\n\n *\n\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n\n */\n\n function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }\n\n}\n\ncontract GromToken is ERC20 {\n\n\n\n\n\n constructor () public ERC20(\"GROM\", \"GR\") {\n\n\n _setupDecimals(6);\n\n\n _mint(msg.sender, 100000000 * (10 ** uint256(decimals())));\n\n\n 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0":{"kind":"number","value":592,"string":"592"},"address":{"kind":"string","value":"0xce7467531f0Fa949e6cd09A3B8F39e287eec33b8"},"source_code":{"kind":"string","value":"pragma solidity 0.6.5;\n\nabstract contract Context {\n\n function _msgSender() internal view virtual returns (address payable) {\n\n return msg.sender;\n\n }\n\n\n\n function _msgData() internal view virtual returns (bytes memory) {\n\n this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n\n return msg.data;\n\n }\n\n}\n\ncontract Ownable is Context {\n\n address private _owner;\n\n\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n\n\n /**\n\n * @dev Initializes the contract setting the deployer as the initial owner.\n\n */\n\n constructor () internal {\n\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n\n }\n\n\n\n /**\n\n * @dev Returns the address of the current owner.\n\n */\n\n function owner() public view returns (address) {\n\n return _owner;\n\n }\n\n\n\n /**\n\n * @dev Throws if called by any account other than the owner.\n\n */\n\n modifier onlyOwner() {\n\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n\n }\n\n\n\n /**\n\n * @dev Leaves the contract without owner. It will not be possible to call\n\n * `onlyOwner` functions anymore. Can only be called by the current owner.\n\n *\n\n * NOTE: Renouncing ownership will leave the contract without an owner,\n\n * thereby removing any functionality that is only available to the owner.\n\n */\n\n function renounceOwnership() public virtual onlyOwner {\n\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n\n }\n\n\n\n /**\n\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n\n * Can only be called by the current owner.\n\n */\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n\n }\n\n}\n\nlibrary Math {\n\n /**\n\n * @dev Returns the largest of two numbers.\n\n */\n\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return a >= b ? a : b;\n\n }\n\n\n\n /**\n\n * @dev Returns the smallest of two numbers.\n\n */\n\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return a < b ? a : b;\n\n }\n\n\n\n /**\n\n * @dev Returns the average of two numbers. The result is rounded towards\n\n * zero.\n\n */\n\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n\n // (a + b) / 2 can overflow, so we distribute\n\n return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);\n\n }\n\n}\n\nlibrary SafeMath {\n\n /**\n\n * @dev Returns the addition of two unsigned integers, reverting on\n\n * overflow.\n\n *\n\n * Counterpart to Solidity's `+` operator.\n\n *\n\n * Requirements:\n\n *\n\n * - Addition cannot overflow.\n\n */\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the subtraction of two unsigned integers, reverting on\n\n * overflow (when the result is negative).\n\n *\n\n * Counterpart to Solidity's `-` operator.\n\n *\n\n * Requirements:\n\n *\n\n * - Subtraction cannot overflow.\n\n */\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return sub(a, b, \"SafeMath: subtraction overflow\");\n\n }\n\n\n\n /**\n\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n\n * overflow (when the result is negative).\n\n *\n\n * Counterpart to Solidity's `-` operator.\n\n *\n\n * Requirements:\n\n *\n\n * - Subtraction cannot overflow.\n\n */\n\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the multiplication of two unsigned integers, reverting on\n\n * overflow.\n\n *\n\n * Counterpart to Solidity's `*` operator.\n\n *\n\n * Requirements:\n\n *\n\n * - Multiplication cannot overflow.\n\n */\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n\n // benefit is lost if 'b' is also tested.\n\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n\n if (a == 0) {\n\n return 0;\n\n }\n\n\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the integer division of two unsigned integers. Reverts on\n\n * division by zero. The result is rounded towards zero.\n\n *\n\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n\n * uses an invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n *\n\n * - The divisor cannot be zero.\n\n */\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return div(a, b, \"SafeMath: division by zero\");\n\n }\n\n\n\n /**\n\n * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\n\n * division by zero. The result is rounded towards zero.\n\n *\n\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n\n * uses an invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n *\n\n * - The divisor cannot be zero.\n\n */\n\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n\n * Reverts when dividing by zero.\n\n *\n\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n\n * invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n *\n\n * - The divisor cannot be zero.\n\n */\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return mod(a, b, \"SafeMath: modulo by zero\");\n\n }\n\n\n\n /**\n\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n\n * Reverts with custom message when dividing by zero.\n\n *\n\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n\n * invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n *\n\n * - The divisor cannot be zero.\n\n */\n\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b != 0, errorMessage);\n\n return a % b;\n\n }\n\n}\n\ninterface IERC20 {\n\n /**\n\n * @dev Returns the amount of tokens in existence.\n\n */\n\n function totalSupply() external view returns (uint256);\n\n\n\n /**\n\n * @dev Returns the amount of tokens owned by `account`.\n\n */\n\n function balanceOf(address account) external view returns (uint256);\n\n\n\n /**\n\n * @dev Moves `amount` tokens from the caller's account to `recipient`.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * Emits a {Transfer} event.\n\n */\n\n function transfer(address recipient, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Returns the remaining number of tokens that `spender` will be\n\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n\n * zero by default.\n\n *\n\n * This value changes when {approve} or {transferFrom} are called.\n\n */\n\n function allowance(address owner, address spender) external view returns (uint256);\n\n\n\n /**\n\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n\n * that someone may use both the old and the new allowance by unfortunate\n\n * transaction ordering. One possible solution to mitigate this race\n\n * condition is to first reduce the spender's allowance to 0 and set the\n\n * desired value afterwards:\n\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n\n *\n\n * Emits an {Approval} event.\n\n */\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n\n * allowance mechanism. `amount` is then deducted from the caller's\n\n * allowance.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * Emits a {Transfer} event.\n\n */\n\n function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n\n * another (`to`).\n\n *\n\n * Note that `value` may be zero.\n\n */\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n\n\n /**\n\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n\n * a call to {approve}. `value` is the new allowance.\n\n */\n\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n}\n\nlibrary SafeERC20 {\n\n using SafeMath for uint256;\n\n using Address for address;\n\n\n\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n\n }\n\n\n\n function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n\n }\n\n\n\n /**\n\n * @dev Deprecated. This function has issues similar to the ones found in\n\n * {IERC20-approve}, and its usage is discouraged.\n\n *\n\n * Whenever possible, use {safeIncreaseAllowance} and\n\n * {safeDecreaseAllowance} instead.\n\n */\n\n function safeApprove(IERC20 token, address spender, uint256 value) internal {\n\n // safeApprove should only be called when setting an initial allowance,\n\n // or when resetting it to zero. To increase and decrease it, use\n\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n\n // solhint-disable-next-line max-line-length\n\n require((value == 0) || (token.allowance(address(this), spender) == 0),\n\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n\n );\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n\n }\n\n\n\n function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).add(value);\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).sub(value, \"SafeERC20: decreased allowance below zero\");\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n /**\n\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n\n * @param token The token targeted by the call.\n\n * @param data The call data (encoded using abi.encode or one of its variants).\n\n */\n\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n\n // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n\n // the target address contains contract code and also asserts for success in the low-level call.\n\n\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n\n if (returndata.length > 0) { // Return data is optional\n\n // solhint-disable-next-line max-line-length\n\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n\n }\n\n }\n\n}\n\nlibrary Address {\n\n /**\n\n * @dev Returns true if `account` is a contract.\n\n *\n\n * [IMPORTANT]\n\n * ====\n\n * It is unsafe to assume that an address for which this function returns\n\n * false is an externally-owned account (EOA) and not a contract.\n\n *\n\n * Among others, `isContract` will return false for the following\n\n * types of addresses:\n\n *\n\n * - an externally-owned account\n\n * - a contract in construction\n\n * - an address where a contract will be created\n\n * - an address where a contract lived, but was destroyed\n\n * ====\n\n */\n\n function isContract(address account) internal view returns (bool) {\n\n // This method relies in extcodesize, which returns 0 for contracts in\n\n // construction, since the code is only stored at the end of the\n\n // constructor execution.\n\n\n\n uint256 size;\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly { size := extcodesize(account) }\n\n return size > 0;\n\n }\n\n\n\n /**\n\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n\n * `recipient`, forwarding all available gas and reverting on errors.\n\n *\n\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n\n * imposed by `transfer`, making them unable to receive funds via\n\n * `transfer`. {sendValue} removes this limitation.\n\n *\n\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n\n *\n\n * IMPORTANT: because control is transferred to `recipient`, care must be\n\n * taken to not create reentrancy vulnerabilities. Consider using\n\n * {ReentrancyGuard} or the\n\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n\n */\n\n function sendValue(address payable recipient, uint256 amount) internal {\n\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n\n (bool success, ) = recipient.call{ value: amount }(\"\");\n\n require(success, \"Address: unable to send value, recipient may have reverted\");\n\n }\n\n\n\n /**\n\n * @dev Performs a Solidity function call using a low level `call`. A\n\n * plain`call` is an unsafe replacement for a function call: use this\n\n * function instead.\n\n *\n\n * If `target` reverts with a revert reason, it is bubbled up by this\n\n * function (like regular Solidity function calls).\n\n *\n\n * Returns the raw returned data. To convert to the expected return value,\n\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n\n *\n\n * Requirements:\n\n *\n\n * - `target` must be a contract.\n\n * - calling `target` with `data` must not revert.\n\n *\n\n * _Available since v3.1._\n\n */\n\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n\n return functionCall(target, data, \"Address: low-level call failed\");\n\n }\n\n\n\n /**\n\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n\n * `errorMessage` as a fallback revert reason when `target` reverts.\n\n *\n\n * _Available since v3.1._\n\n */\n\n function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n\n return _functionCallWithValue(target, data, 0, errorMessage);\n\n }\n\n\n\n /**\n\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n\n * but also transferring `value` wei to `target`.\n\n *\n\n * Requirements:\n\n *\n\n * - the calling contract must have an ETH balance of at least `value`.\n\n * - the called Solidity function must be `payable`.\n\n *\n\n * _Available since v3.1._\n\n */\n\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n\n }\n\n\n\n /**\n\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n\n *\n\n * _Available since v3.1._\n\n */\n\n function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\n\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n\n return _functionCallWithValue(target, data, value, errorMessage);\n\n }\n\n\n\n function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\n\n require(isContract(target), \"Address: call to non-contract\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls\n\n (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\n\n if (success) {\n\n return returndata;\n\n } else {\n\n // Look for revert reason and bubble it up if present\n\n if (returndata.length > 0) {\n\n // The easiest way to bubble the revert reason is using memory via assembly\n\n\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly {\n\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n\n }\n\n } else {\n\n revert(errorMessage);\n\n }\n\n }\n\n }\n\n}\n\nabstract contract IRewardDistributionRecipient is Ownable {\n\n address public rewardDistribution;\n\n\n\n function notifyRewardAmount(uint256 reward) external virtual;\n\n\n\n modifier onlyRewardDistribution() {\n\n require(_msgSender() == rewardDistribution, \"Caller is not reward distribution\");\n\n _;\n\n }\n\n\n\n function setRewardDistribution(address _rewardDistribution) external onlyOwner {\n\n rewardDistribution = _rewardDistribution;\n\n }\n\n}\n\ncontract LPTokenWrapper {\n\n using SafeMath for uint256;\n\n using SafeERC20 for IERC20;\n\n\n\n IERC20 public uni = IERC20(0x3dd49f67E9d5Bc4C5E6634b3F70BfD9dc1b6BD74); // lpToken contract address, currently set to the SAND-ETH pool contract address\n\n\n\n uint256 private _totalSupply;\n\n mapping(address => uint256) private _balances;\n\n\n\n function totalSupply() public view returns (uint256) {\n\n return _totalSupply;\n\n }\n\n\n\n function balanceOf(address account) public view returns (uint256) {\n\n return _balances[account];\n\n }\n\n\n\n function stake(uint256 amount) public virtual {\n\n _totalSupply = _totalSupply.add(amount);\n\n _balances[msg.sender] = _balances[msg.sender].add(amount);\n\n uni.safeTransferFrom(msg.sender, address(this), amount);\n\n }\n\n\n\n function withdraw(uint256 amount) public virtual {\n\n _totalSupply = _totalSupply.sub(amount);\n\n _balances[msg.sender] = _balances[msg.sender].sub(amount);\n\n uni.safeTransfer(msg.sender, amount);\n\n }\n\n}\n\ncontract SANDRewardPool is LPTokenWrapper, IRewardDistributionRecipient {\n\n IERC20 public sand = IERC20(0x3845badAde8e6dFF049820680d1F14bD3903a5d0); // Reward token: SAND\n\n uint256 public constant DURATION = 30 days; // Reward period\n\n\n\n uint256 public periodFinish = 0;\n\n uint256 public rewardRate = 0;\n\n uint256 public lastUpdateTime;\n\n uint256 public rewardPerTokenStored;\n\n mapping(address => uint256) public userRewardPerTokenPaid;\n\n mapping(address => uint256) public rewards;\n\n\n\n event RewardAdded(uint256 reward);\n\n event Staked(address indexed user, uint256 amount);\n\n event Withdrawn(address indexed user, uint256 amount);\n\n event RewardPaid(address indexed user, uint256 reward);\n\n\n\n modifier updateReward(address account) {\n\n rewardPerTokenStored = rewardPerToken();\n\n lastUpdateTime = lastTimeRewardApplicable();\n\n if (account != address(0)) {\n\n rewards[account] = earned(account);\n\n userRewardPerTokenPaid[account] = rewardPerTokenStored;\n\n }\n\n _;\n\n }\n\n\n\n function lastTimeRewardApplicable() public view returns (uint256) {\n\n return Math.min(block.timestamp, periodFinish);\n\n }\n\n\n\n function rewardPerToken() public view returns (uint256) {\n\n if (totalSupply() == 0) {\n\n return rewardPerTokenStored;\n\n }\n\n return rewardPerTokenStored.add(lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRate).mul(1e18).div(totalSupply()));\n\n }\n\n\n\n function earned(address account) public view returns (uint256) {\n\n return balanceOf(account).mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]);\n\n }\n\n\n\n // stake visibility is public as overriding LPTokenWrapper's stake() function\n\n function stake(uint256 amount) public override updateReward(msg.sender) {\n\n require(amount > 0, \"Cannot stake 0\");\n\n super.stake(amount);\n\n emit Staked(msg.sender, amount);\n\n }\n\n\n\n function withdraw(uint256 amount) public override updateReward(msg.sender) {\n\n require(amount > 0, \"Cannot withdraw 0\");\n\n super.withdraw(amount);\n\n emit Withdrawn(msg.sender, amount);\n\n }\n\n\n\n function exit() external {\n\n withdraw(balanceOf(msg.sender));\n\n getReward();\n\n }\n\n\n\n function getReward() public updateReward(msg.sender) {\n\n uint256 reward = earned(msg.sender);\n\n if (reward > 0) {\n\n rewards[msg.sender] = 0;\n\n sand.safeTransfer(msg.sender, reward);\n\n emit RewardPaid(msg.sender, reward);\n\n }\n\n }\n\n\n\n function notifyRewardAmount(uint256 reward) external override onlyRewardDistribution updateReward(address(0)) {\n\n if (block.timestamp >= periodFinish) {\n\n rewardRate = reward.div(DURATION);\n\n } else {\n\n uint256 remaining = periodFinish.sub(block.timestamp);\n\n uint256 leftover = remaining.mul(rewardRate);\n\n rewardRate = reward.add(leftover).div(DURATION);\n\n }\n\n lastUpdateTime = block.timestamp;\n\n periodFinish = block.timestamp.add(DURATION);\n\n emit RewardAdded(reward);\n\n 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0":{"kind":"number","value":593,"string":"593"},"address":{"kind":"string","value":"0xCf199786d4594F6537694E1b006c26E564665571"},"source_code":{"kind":"string","value":"pragma solidity 0.5.17;\npragma experimental ABIEncoderV2;\n\ncontract Context {\n\n // Empty internal constructor, to prevent people from mistakenly deploying\n\n // an instance of this contract, which should be used via inheritance.\n\n constructor () internal { }\n\n // solhint-disable-previous-line no-empty-blocks\n\n\n\n function _msgSender() internal view returns (address payable) {\n\n return msg.sender;\n\n }\n\n\n\n function _msgData() internal view returns (bytes memory) {\n\n this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n\n return msg.data;\n\n }\n\n}\n\nlibrary Roles {\n\n struct Role {\n\n mapping (address => bool) bearer;\n\n }\n\n\n\n /**\n\n * @dev Give an account access to this role.\n\n */\n\n function add(Role storage role, address account) internal {\n\n require(!has(role, account), \"Roles: account already has role\");\n\n role.bearer[account] = true;\n\n }\n\n\n\n /**\n\n * @dev Remove an account's access to this role.\n\n */\n\n function remove(Role storage role, address account) internal {\n\n require(has(role, account), \"Roles: account does not have role\");\n\n role.bearer[account] = false;\n\n }\n\n\n\n /**\n\n * @dev Check if an account has this role.\n\n * @return bool\n\n */\n\n function has(Role storage role, address account) internal view returns (bool) {\n\n require(account != address(0), \"Roles: account is the zero address\");\n\n return role.bearer[account];\n\n }\n\n}\n\ncontract SignerRole is Context {\n\n using Roles for Roles.Role;\n\n\n\n event SignerAdded(address indexed account);\n\n event SignerRemoved(address indexed account);\n\n\n\n Roles.Role private _signers;\n\n\n\n constructor () internal {\n\n _addSigner(_msgSender());\n\n }\n\n\n\n modifier onlySigner() {\n\n require(isSigner(_msgSender()), \"SignerRole: caller does not have the Signer role\");\n\n _;\n\n }\n\n\n\n function isSigner(address account) public view returns (bool) {\n\n return _signers.has(account);\n\n }\n\n\n\n function addSigner(address account) public onlySigner {\n\n _addSigner(account);\n\n }\n\n\n\n function renounceSigner() public {\n\n _removeSigner(_msgSender());\n\n }\n\n\n\n function _addSigner(address account) internal {\n\n _signers.add(account);\n\n emit SignerAdded(account);\n\n }\n\n\n\n function _removeSigner(address account) internal {\n\n _signers.remove(account);\n\n emit SignerRemoved(account);\n\n }\n\n}\n\nlibrary Counters {\n\n using SafeMath for uint256;\n\n\n\n struct Counter {\n\n // This variable should never be directly accessed by users of the library: interactions must be restricted to\n\n // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add\n\n // this feature: see https://github.com/ethereum/solidity/issues/4637\n\n uint256 _value; // default: 0\n\n }\n\n\n\n function current(Counter storage counter) internal view returns (uint256) {\n\n return counter._value;\n\n }\n\n\n\n function increment(Counter storage counter) internal {\n\n // The {SafeMath} overflow check can be skipped here, see the comment at the top\n\n counter._value += 1;\n\n }\n\n\n\n function decrement(Counter storage counter) internal {\n\n counter._value = counter._value.sub(1);\n\n }\n\n}\n\ninterface IERC165 {\n\n /**\n\n * @dev Returns true if this contract implements the interface defined by\n\n * `interfaceId`. See the corresponding\n\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n\n * to learn more about how these ids are created.\n\n *\n\n * This function call must use less than 30 000 gas.\n\n */\n\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n\n}\n\nlibrary Math {\n\n /**\n\n * @dev Returns the largest of two numbers.\n\n */\n\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return a >= b ? a : b;\n\n }\n\n\n\n /**\n\n * @dev Returns the smallest of two numbers.\n\n */\n\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return a < b ? a : b;\n\n }\n\n\n\n /**\n\n * @dev Returns the average of two numbers. The result is rounded towards\n\n * zero.\n\n */\n\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n\n // (a + b) / 2 can overflow, so we distribute\n\n return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);\n\n }\n\n}\n\nlibrary SafeMath {\n\n /**\n\n * @dev Returns the addition of two unsigned integers, reverting on\n\n * overflow.\n\n *\n\n * Counterpart to Solidity's `+` operator.\n\n *\n\n * Requirements:\n\n * - Addition cannot overflow.\n\n */\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the subtraction of two unsigned integers, reverting on\n\n * overflow (when the result is negative).\n\n *\n\n * Counterpart to Solidity's `-` operator.\n\n *\n\n * Requirements:\n\n * - Subtraction cannot overflow.\n\n */\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return sub(a, b, \"SafeMath: subtraction overflow\");\n\n }\n\n\n\n /**\n\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n\n * overflow (when the result is negative).\n\n *\n\n * Counterpart to Solidity's `-` operator.\n\n *\n\n * Requirements:\n\n * - Subtraction cannot overflow.\n\n *\n\n * _Available since v2.4.0._\n\n */\n\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the multiplication of two unsigned integers, reverting on\n\n * overflow.\n\n *\n\n * Counterpart to Solidity's `*` operator.\n\n *\n\n * Requirements:\n\n * - Multiplication cannot overflow.\n\n */\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n\n // benefit is lost if 'b' is also tested.\n\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n\n if (a == 0) {\n\n return 0;\n\n }\n\n\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the integer division of two unsigned integers. Reverts on\n\n * division by zero. The result is rounded towards zero.\n\n *\n\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n\n * uses an invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n * - The divisor cannot be zero.\n\n */\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return div(a, b, \"SafeMath: division by zero\");\n\n }\n\n\n\n /**\n\n * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\n\n * division by zero. The result is rounded towards zero.\n\n *\n\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n\n * uses an invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n * - The divisor cannot be zero.\n\n *\n\n * _Available since v2.4.0._\n\n */\n\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n // Solidity only automatically asserts when dividing by 0\n\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n\n\n return c;\n\n }\n\n\n\n /**\n\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n\n * Reverts when dividing by zero.\n\n *\n\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n\n * invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n * - The divisor cannot be zero.\n\n */\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return mod(a, b, \"SafeMath: modulo by zero\");\n\n }\n\n\n\n /**\n\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n\n * Reverts with custom message when dividing by zero.\n\n *\n\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n\n * invalid opcode to revert (consuming all remaining gas).\n\n *\n\n * Requirements:\n\n * - The divisor cannot be zero.\n\n *\n\n * _Available since v2.4.0._\n\n */\n\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b != 0, errorMessage);\n\n return a % b;\n\n }\n\n}\n\ncontract Ownable is Context {\n\n address private _owner;\n\n\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n\n\n /**\n\n * @dev Initializes the contract setting the deployer as the initial owner.\n\n */\n\n constructor () internal {\n\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n\n }\n\n\n\n /**\n\n * @dev Returns the address of the current owner.\n\n */\n\n function owner() public view returns (address) {\n\n return _owner;\n\n }\n\n\n\n /**\n\n * @dev Throws if called by any account other than the owner.\n\n */\n\n modifier onlyOwner() {\n\n require(isOwner(), \"Ownable: caller is not the owner\");\n\n _;\n\n }\n\n\n\n /**\n\n * @dev Returns true if the caller is the current owner.\n\n */\n\n function isOwner() public view returns (bool) {\n\n return _msgSender() == _owner;\n\n }\n\n\n\n /**\n\n * @dev Leaves the contract without owner. It will not be possible to call\n\n * `onlyOwner` functions anymore. Can only be called by the current owner.\n\n *\n\n * NOTE: Renouncing ownership will leave the contract without an owner,\n\n * thereby removing any functionality that is only available to the owner.\n\n */\n\n function renounceOwnership() public onlyOwner {\n\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n\n }\n\n\n\n /**\n\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n\n * Can only be called by the current owner.\n\n */\n\n function transferOwnership(address newOwner) public onlyOwner {\n\n _transferOwnership(newOwner);\n\n }\n\n\n\n /**\n\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n\n */\n\n function _transferOwnership(address newOwner) internal {\n\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n\n }\n\n}\n\ninterface IERC20 {\n\n /**\n\n * @dev Returns the amount of tokens in existence.\n\n */\n\n function totalSupply() external view returns (uint256);\n\n\n\n /**\n\n * @dev Returns the amount of tokens owned by `account`.\n\n */\n\n function balanceOf(address account) external view returns (uint256);\n\n\n\n /**\n\n * @dev Moves `amount` tokens from the caller's account to `recipient`.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * Emits a {Transfer} event.\n\n */\n\n function transfer(address recipient, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Returns the remaining number of tokens that `spender` will be\n\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n\n * zero by default.\n\n *\n\n * This value changes when {approve} or {transferFrom} are called.\n\n */\n\n function allowance(address owner, address spender) external view returns (uint256);\n\n\n\n /**\n\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n\n * that someone may use both the old and the new allowance by unfortunate\n\n * transaction ordering. One possible solution to mitigate this race\n\n * condition is to first reduce the spender's allowance to 0 and set the\n\n * desired value afterwards:\n\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n\n *\n\n * Emits an {Approval} event.\n\n */\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n\n * allowance mechanism. `amount` is then deducted from the caller's\n\n * allowance.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * Emits a {Transfer} event.\n\n */\n\n function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n\n * another (`to`).\n\n *\n\n * Note that `value` may be zero.\n\n */\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n\n\n /**\n\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n\n * a call to {approve}. `value` is the new allowance.\n\n */\n\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n}\n\nlibrary SafeERC20 {\n\n using SafeMath for uint256;\n\n using Address for address;\n\n\n\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n\n callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n\n }\n\n\n\n function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n\n callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n\n }\n\n\n\n function safeApprove(IERC20 token, address spender, uint256 value) internal {\n\n // safeApprove should only be called when setting an initial allowance,\n\n // or when resetting it to zero. To increase and decrease it, use\n\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n\n // solhint-disable-next-line max-line-length\n\n require((value == 0) || (token.allowance(address(this), spender) == 0),\n\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n\n );\n\n callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n\n }\n\n\n\n function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).add(value);\n\n callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).sub(value, \"SafeERC20: decreased allowance below zero\");\n\n callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n /**\n\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n\n * @param token The token targeted by the call.\n\n * @param data The call data (encoded using abi.encode or one of its variants).\n\n */\n\n function callOptionalReturn(IERC20 token, bytes memory data) private {\n\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n\n // we're implementing it ourselves.\n\n\n\n // A Solidity high level call has three parts:\n\n // 1. The target address is checked to verify it contains contract code\n\n // 2. The call itself is made, and success asserted\n\n // 3. The return value is decoded, which in turn checks the size of the returned data.\n\n // solhint-disable-next-line max-line-length\n\n require(address(token).isContract(), \"SafeERC20: call to non-contract\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls\n\n (bool success, bytes memory returndata) = address(token).call(data);\n\n require(success, \"SafeERC20: low-level call failed\");\n\n\n\n if (returndata.length > 0) { // Return data is optional\n\n // solhint-disable-next-line max-line-length\n\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n\n }\n\n }\n\n}\n\ncontract IERC721 is IERC165 {\n\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n\n\n /**\n\n * @dev Returns the number of NFTs in `owner`'s account.\n\n */\n\n function balanceOf(address owner) public view returns (uint256 balance);\n\n\n\n /**\n\n * @dev Returns the owner of the NFT specified by `tokenId`.\n\n */\n\n function ownerOf(uint256 tokenId) public view returns (address owner);\n\n\n\n /**\n\n * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to\n\n * another (`to`).\n\n *\n\n *\n\n *\n\n * Requirements:\n\n * - `from`, `to` cannot be zero.\n\n * - `tokenId` must be owned by `from`.\n\n * - If the caller is not `from`, it must be have been allowed to move this\n\n * NFT by either {approve} or {setApprovalForAll}.\n\n */\n\n function safeTransferFrom(address from, address to, uint256 tokenId) public;\n\n /**\n\n * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to\n\n * another (`to`).\n\n *\n\n * Requirements:\n\n * - If the caller is not `from`, it must be approved to move this NFT by\n\n * either {approve} or {setApprovalForAll}.\n\n */\n\n function transferFrom(address from, address to, uint256 tokenId) public;\n\n function approve(address to, uint256 tokenId) public;\n\n function getApproved(uint256 tokenId) public view returns (address operator);\n\n\n\n function setApprovalForAll(address operator, bool _approved) public;\n\n function isApprovedForAll(address owner, address operator) public view returns (bool);\n\n\n\n\n\n function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public;\n\n}\n\ncontract IERC721Metadata is IERC721 {\n\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function tokenURI(uint256 tokenId) external view returns (string memory);\n\n}\n\ncontract IERC721Receiver {\n\n /**\n\n * @notice Handle the receipt of an NFT\n\n * @dev The ERC721 smart contract calls this function on the recipient\n\n * after a {IERC721-safeTransferFrom}. This function MUST return the function selector,\n\n * otherwise the caller will revert the transaction. The selector to be\n\n * returned can be obtained as `this.onERC721Received.selector`. This\n\n * function MAY throw to revert and reject the transfer.\n\n * Note: the ERC721 contract address is always the message sender.\n\n * @param operator The address which called `safeTransferFrom` function\n\n * @param from The address which previously owned the token\n\n * @param tokenId The NFT identifier which is being transferred\n\n * @param data Additional data with no specified format\n\n * @return bytes4 `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`\n\n */\n\n function onERC721Received(address operator, address from, uint256 tokenId, bytes memory data)\n\n public returns (bytes4);\n\n}\n\nlibrary Address {\n\n /**\n\n * @dev Returns true if `account` is a contract.\n\n *\n\n * [IMPORTANT]\n\n * ====\n\n * It is unsafe to assume that an address for which this function returns\n\n * false is an externally-owned account (EOA) and not a contract.\n\n *\n\n * Among others, `isContract` will return false for the following \n\n * types of addresses:\n\n *\n\n * - an externally-owned account\n\n * - a contract in construction\n\n * - an address where a contract will be created\n\n * - an address where a contract lived, but was destroyed\n\n * ====\n\n */\n\n function isContract(address account) internal view returns (bool) {\n\n // According to EIP-1052, 0x0 is the value returned for not-yet created accounts\n\n // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned\n\n // for accounts without code, i.e. `keccak256('')`\n\n bytes32 codehash;\n\n bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly { codehash := extcodehash(account) }\n\n return (codehash != accountHash && codehash != 0x0);\n\n }\n\n\n\n /**\n\n * @dev Converts an `address` into `address payable`. Note that this is\n\n * simply a type cast: the actual underlying value is not changed.\n\n *\n\n * _Available since v2.4.0._\n\n */\n\n function toPayable(address account) internal pure returns (address payable) {\n\n return address(uint160(account));\n\n }\n\n\n\n /**\n\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n\n * `recipient`, forwarding all available gas and reverting on errors.\n\n *\n\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n\n * imposed by `transfer`, making them unable to receive funds via\n\n * `transfer`. {sendValue} removes this limitation.\n\n *\n\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n\n *\n\n * IMPORTANT: because control is transferred to `recipient`, care must be\n\n * taken to not create reentrancy vulnerabilities. Consider using\n\n * {ReentrancyGuard} or the\n\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n\n *\n\n * _Available since v2.4.0._\n\n */\n\n function sendValue(address payable recipient, uint256 amount) internal {\n\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n\n\n // solhint-disable-next-line avoid-call-value\n\n (bool success, ) = recipient.call.value(amount)(\"\");\n\n require(success, \"Address: unable to send value, recipient may have reverted\");\n\n }\n\n}\n\ncontract ReentrancyGuard {\n\n bool private _notEntered;\n\n\n\n constructor () internal {\n\n // Storing an initial non-zero value makes deployment a bit more\n\n // expensive, but in exchange the refund on every call to nonReentrant\n\n // will be lower in amount. Since refunds are capped to a percetange of\n\n // the total transaction's gas, it is best to keep them low in cases\n\n // like this one, to increase the likelihood of the full refund coming\n\n // into effect.\n\n _notEntered = true;\n\n }\n\n\n\n /**\n\n * @dev Prevents a contract from calling itself, directly or indirectly.\n\n * Calling a `nonReentrant` function from another `nonReentrant`\n\n * function is not supported. It is possible to prevent this from happening\n\n * by making the `nonReentrant` function external, and make it call a\n\n * `private` function that does the actual work.\n\n */\n\n modifier nonReentrant() {\n\n // On the first call to nonReentrant, _notEntered will be true\n\n require(_notEntered, \"ReentrancyGuard: reentrant call\");\n\n\n\n // Any calls to nonReentrant after this point will fail\n\n _notEntered = false;\n\n\n\n _;\n\n\n\n // By storing the original value once again, a refund is triggered (see\n\n // https://eips.ethereum.org/EIPS/eip-2200)\n\n _notEntered = true;\n\n }\n\n}\n\ncontract DInterest is ReentrancyGuard, Ownable {\n\n using SafeMath for uint256;\n\n using DecMath for uint256;\n\n using SafeERC20 for ERC20;\n\n using Address for address;\n\n\n\n // Constants\n\n uint256 internal constant PRECISION = 10**18;\n\n uint256 internal constant ONE = 10**18;\n\n\n\n // User deposit data\n\n // Each deposit has an ID used in the depositNFT, which is equal to its index in `deposits` plus 1\n\n struct Deposit {\n\n uint256 amount; // Amount of stablecoin deposited\n\n uint256 maturationTimestamp; // Unix timestamp after which the deposit may be withdrawn, in seconds\n\n uint256 interestOwed; // Deficit incurred to the pool at time of deposit\n\n uint256 initialMoneyMarketIncomeIndex; // Money market's income index at time of deposit\n\n bool active; // True if not yet withdrawn, false if withdrawn\n\n bool finalSurplusIsNegative;\n\n uint256 finalSurplusAmount; // Surplus remaining after withdrawal\n\n uint256 mintMPHAmount; // Amount of MPH minted to user\n\n }\n\n Deposit[] internal deposits;\n\n uint256 public latestFundedDepositID; // the ID of the most recently created deposit that was funded\n\n uint256 public unfundedUserDepositAmount; // the deposited stablecoin amount whose deficit hasn't been funded\n\n\n\n // Funding data\n\n // Each funding has an ID used in the fundingNFT, which is equal to its index in `fundingList` plus 1\n\n struct Funding {\n\n // deposits with fromDepositID < ID <= toDepositID are funded\n\n uint256 fromDepositID;\n\n uint256 toDepositID;\n\n uint256 recordedFundedDepositAmount;\n\n uint256 recordedMoneyMarketIncomeIndex;\n\n }\n\n Funding[] internal fundingList;\n\n\n\n // Params\n\n uint256 public MinDepositPeriod; // Minimum deposit period, in seconds\n\n uint256 public MaxDepositPeriod; // Maximum deposit period, in seconds\n\n uint256 public MinDepositAmount; // Minimum deposit amount for each deposit, in stablecoins\n\n uint256 public MaxDepositAmount; // Maximum deposit amount for each deposit, in stablecoins\n\n\n\n // Instance variables\n\n uint256 public totalDeposit;\n\n uint256 public totalInterestOwed;\n\n\n\n // External smart contracts\n\n IMoneyMarket public moneyMarket;\n\n ERC20 public stablecoin;\n\n IFeeModel public feeModel;\n\n IInterestModel public interestModel;\n\n IInterestOracle public interestOracle;\n\n NFT public depositNFT;\n\n NFT public fundingNFT;\n\n MPHMinter public mphMinter;\n\n\n\n // Events\n\n event EDeposit(\n\n address indexed sender,\n\n uint256 indexed depositID,\n\n uint256 amount,\n\n uint256 maturationTimestamp,\n\n uint256 interestAmount,\n\n uint256 mintMPHAmount\n\n );\n\n event EWithdraw(\n\n address indexed sender,\n\n uint256 indexed depositID,\n\n uint256 indexed fundingID,\n\n bool early,\n\n uint256 takeBackMPHAmount\n\n );\n\n event EFund(\n\n address indexed sender,\n\n uint256 indexed fundingID,\n\n uint256 deficitAmount,\n\n uint256 mintMPHAmount\n\n );\n\n event ESetParamAddress(\n\n address indexed sender,\n\n string indexed paramName,\n\n address newValue\n\n );\n\n event ESetParamUint(\n\n address indexed sender,\n\n string indexed paramName,\n\n uint256 newValue\n\n );\n\n\n\n struct DepositLimit {\n\n uint256 MinDepositPeriod;\n\n uint256 MaxDepositPeriod;\n\n uint256 MinDepositAmount;\n\n uint256 MaxDepositAmount;\n\n }\n\n\n\n constructor(\n\n DepositLimit memory _depositLimit,\n\n address _moneyMarket, // Address of IMoneyMarket that's used for generating interest (owner must be set to this DInterest contract)\n\n address _stablecoin, // Address of the stablecoin used to store funds\n\n address _feeModel, // Address of the FeeModel contract that determines how fees are charged\n\n address _interestModel, // Address of the InterestModel contract that determines how much interest to offer\n\n address _interestOracle, // Address of the InterestOracle contract that provides the average interest rate\n\n address _depositNFT, // Address of the NFT representing ownership of deposits (owner must be set to this DInterest contract)\n\n address _fundingNFT, // Address of the NFT representing ownership of fundings (owner must be set to this DInterest contract)\n\n address _mphMinter // Address of the contract for handling minting MPH to users\n\n ) public {\n\n // Verify input addresses\n\n require(\n\n _moneyMarket.isContract() &&\n\n _stablecoin.isContract() &&\n\n _feeModel.isContract() &&\n\n _interestModel.isContract() &&\n\n _interestOracle.isContract() &&\n\n _depositNFT.isContract() &&\n\n _fundingNFT.isContract() &&\n\n _mphMinter.isContract(),\n\n \"DInterest: An input address is not a contract\"\n\n );\n\n\n\n moneyMarket = IMoneyMarket(_moneyMarket);\n\n stablecoin = ERC20(_stablecoin);\n\n feeModel = IFeeModel(_feeModel);\n\n interestModel = IInterestModel(_interestModel);\n\n interestOracle = IInterestOracle(_interestOracle);\n\n depositNFT = NFT(_depositNFT);\n\n fundingNFT = NFT(_fundingNFT);\n\n mphMinter = MPHMinter(_mphMinter);\n\n\n\n // Ensure moneyMarket uses the same stablecoin\n\n require(\n\n moneyMarket.stablecoin() == _stablecoin,\n\n \"DInterest: moneyMarket.stablecoin() != _stablecoin\"\n\n );\n\n\n\n // Ensure interestOracle uses the same moneyMarket\n\n require(\n\n interestOracle.moneyMarket() == _moneyMarket,\n\n \"DInterest: interestOracle.moneyMarket() != _moneyMarket\"\n\n );\n\n\n\n // Verify input uint256 parameters\n\n require(\n\n _depositLimit.MaxDepositPeriod > 0 &&\n\n _depositLimit.MaxDepositAmount > 0,\n\n \"DInterest: An input uint256 is 0\"\n\n );\n\n require(\n\n _depositLimit.MinDepositPeriod <= _depositLimit.MaxDepositPeriod,\n\n \"DInterest: Invalid DepositPeriod range\"\n\n );\n\n require(\n\n _depositLimit.MinDepositAmount <= _depositLimit.MaxDepositAmount,\n\n \"DInterest: Invalid DepositAmount range\"\n\n );\n\n\n\n MinDepositPeriod = _depositLimit.MinDepositPeriod;\n\n MaxDepositPeriod = _depositLimit.MaxDepositPeriod;\n\n MinDepositAmount = _depositLimit.MinDepositAmount;\n\n MaxDepositAmount = _depositLimit.MaxDepositAmount;\n\n totalDeposit = 0;\n\n }\n\n\n\n /**\n\n Public actions\n\n */\n\n\n\n function deposit(uint256 amount, uint256 maturationTimestamp)\n\n external\n\n nonReentrant\n\n {\n\n _deposit(amount, maturationTimestamp);\n\n }\n\n\n\n function withdraw(uint256 depositID, uint256 fundingID)\n\n external\n\n nonReentrant\n\n {\n\n _withdraw(depositID, fundingID, false);\n\n }\n\n\n\n function earlyWithdraw(uint256 depositID, uint256 fundingID)\n\n external\n\n nonReentrant\n\n {\n\n _withdraw(depositID, fundingID, true);\n\n }\n\n\n\n function multiDeposit(\n\n uint256[] calldata amountList,\n\n uint256[] calldata maturationTimestampList\n\n ) external nonReentrant {\n\n require(\n\n amountList.length == maturationTimestampList.length,\n\n \"DInterest: List lengths unequal\"\n\n );\n\n for (uint256 i = 0; i < amountList.length; i = i.add(1)) {\n\n _deposit(amountList[i], maturationTimestampList[i]);\n\n }\n\n }\n\n\n\n function multiWithdraw(\n\n uint256[] calldata depositIDList,\n\n uint256[] calldata fundingIDList\n\n ) external nonReentrant {\n\n require(\n\n depositIDList.length == fundingIDList.length,\n\n \"DInterest: List lengths unequal\"\n\n );\n\n for (uint256 i = 0; i < depositIDList.length; i = i.add(1)) {\n\n _withdraw(depositIDList[i], fundingIDList[i], false);\n\n }\n\n }\n\n\n\n function multiEarlyWithdraw(\n\n uint256[] calldata depositIDList,\n\n uint256[] calldata fundingIDList\n\n ) external nonReentrant {\n\n require(\n\n depositIDList.length == fundingIDList.length,\n\n \"DInterest: List lengths unequal\"\n\n );\n\n for (uint256 i = 0; i < depositIDList.length; i = i.add(1)) {\n\n _withdraw(depositIDList[i], fundingIDList[i], true);\n\n }\n\n }\n\n\n\n /**\n\n Deficit funding\n\n */\n\n\n\n function fundAll() external nonReentrant {\n\n // Calculate current deficit\n\n (bool isNegative, uint256 deficit) = surplus();\n\n require(isNegative, \"DInterest: No deficit available\");\n\n require(\n\n !depositIsFunded(deposits.length),\n\n \"DInterest: All deposits funded\"\n\n );\n\n\n\n // Create funding struct\n\n uint256 incomeIndex = moneyMarket.incomeIndex();\n\n require(incomeIndex > 0, \"DInterest: incomeIndex == 0\");\n\n fundingList.push(\n\n Funding({\n\n fromDepositID: latestFundedDepositID,\n\n toDepositID: deposits.length,\n\n recordedFundedDepositAmount: unfundedUserDepositAmount,\n\n recordedMoneyMarketIncomeIndex: incomeIndex\n\n })\n\n );\n\n\n\n // Update relevant values\n\n latestFundedDepositID = deposits.length;\n\n unfundedUserDepositAmount = 0;\n\n\n\n _fund(deficit);\n\n }\n\n\n\n function fundMultiple(uint256 toDepositID) external nonReentrant {\n\n require(\n\n toDepositID > latestFundedDepositID,\n\n \"DInterest: Deposits already funded\"\n\n );\n\n require(\n\n toDepositID <= deposits.length,\n\n \"DInterest: Invalid toDepositID\"\n\n );\n\n\n\n (bool isNegative, uint256 surplus) = surplus();\n\n require(isNegative, \"DInterest: No deficit available\");\n\n\n\n uint256 totalDeficit = 0;\n\n uint256 totalSurplus = 0;\n\n uint256 totalDepositToFund = 0;\n\n // Deposits with ID [latestFundedDepositID+1, toDepositID] will be funded\n\n for (\n\n uint256 id = latestFundedDepositID.add(1);\n\n id <= toDepositID;\n\n id = id.add(1)\n\n ) {\n\n Deposit storage depositEntry = _getDeposit(id);\n\n if (depositEntry.active) {\n\n // Deposit still active, use current surplus\n\n (isNegative, surplus) = surplusOfDeposit(id);\n\n } else {\n\n // Deposit has been withdrawn, use recorded final surplus\n\n (isNegative, surplus) = (\n\n depositEntry.finalSurplusIsNegative,\n\n depositEntry.finalSurplusAmount\n\n );\n\n }\n\n\n\n if (isNegative) {\n\n // Add on deficit to total\n\n totalDeficit = totalDeficit.add(surplus);\n\n } else {\n\n // Has surplus\n\n totalSurplus = totalSurplus.add(surplus);\n\n }\n\n\n\n if (depositEntry.active) {\n\n totalDepositToFund = totalDepositToFund.add(\n\n depositEntry.amount\n\n );\n\n }\n\n }\n\n if (totalSurplus >= totalDeficit) {\n\n // Deposits selected have a surplus as a whole, revert\n\n revert(\"DInterest: Selected deposits in surplus\");\n\n } else {\n\n // Deduct surplus from totalDeficit\n\n totalDeficit = totalDeficit.sub(totalSurplus);\n\n }\n\n\n\n // Create funding struct\n\n uint256 incomeIndex = moneyMarket.incomeIndex();\n\n require(incomeIndex > 0, \"DInterest: incomeIndex == 0\");\n\n fundingList.push(\n\n Funding({\n\n fromDepositID: latestFundedDepositID,\n\n toDepositID: toDepositID,\n\n recordedFundedDepositAmount: totalDepositToFund,\n\n recordedMoneyMarketIncomeIndex: incomeIndex\n\n })\n\n );\n\n\n\n // Update relevant values\n\n latestFundedDepositID = toDepositID;\n\n unfundedUserDepositAmount = unfundedUserDepositAmount.sub(\n\n totalDepositToFund\n\n );\n\n\n\n _fund(totalDeficit);\n\n }\n\n\n\n /**\n\n Public getters\n\n */\n\n\n\n function calculateInterestAmount(\n\n uint256 depositAmount,\n\n uint256 depositPeriodInSeconds\n\n ) public returns (uint256 interestAmount) {\n\n (, uint256 moneyMarketInterestRatePerSecond) = interestOracle\n\n .updateAndQuery();\n\n (bool surplusIsNegative, uint256 surplusAmount) = surplus();\n\n\n\n return\n\n interestModel.calculateInterestAmount(\n\n depositAmount,\n\n depositPeriodInSeconds,\n\n moneyMarketInterestRatePerSecond,\n\n surplusIsNegative,\n\n surplusAmount\n\n );\n\n }\n\n\n\n function surplus() public returns (bool isNegative, uint256 surplusAmount) {\n\n uint256 totalValue = moneyMarket.totalValue();\n\n uint256 totalOwed = totalDeposit.add(totalInterestOwed);\n\n if (totalValue >= totalOwed) {\n\n // Locked value more than owed deposits, positive surplus\n\n isNegative = false;\n\n surplusAmount = totalValue.sub(totalOwed);\n\n } else {\n\n // Locked value less than owed deposits, negative surplus\n\n isNegative = true;\n\n surplusAmount = totalOwed.sub(totalValue);\n\n }\n\n }\n\n\n\n function surplusOfDeposit(uint256 depositID)\n\n public\n\n returns (bool isNegative, uint256 surplusAmount)\n\n {\n\n Deposit storage depositEntry = _getDeposit(depositID);\n\n uint256 currentMoneyMarketIncomeIndex = moneyMarket.incomeIndex();\n\n uint256 currentDepositValue = depositEntry\n\n .amount\n\n .mul(currentMoneyMarketIncomeIndex)\n\n .div(depositEntry.initialMoneyMarketIncomeIndex);\n\n uint256 owed = depositEntry.amount.add(depositEntry.interestOwed);\n\n if (currentDepositValue >= owed) {\n\n // Locked value more than owed deposits, positive surplus\n\n isNegative = false;\n\n surplusAmount = currentDepositValue.sub(owed);\n\n } else {\n\n // Locked value less than owed deposits, negative surplus\n\n isNegative = true;\n\n surplusAmount = owed.sub(currentDepositValue);\n\n }\n\n }\n\n\n\n function depositIsFunded(uint256 id) public view returns (bool) {\n\n return (id <= latestFundedDepositID);\n\n }\n\n\n\n function depositsLength() external view returns (uint256) {\n\n return deposits.length;\n\n }\n\n\n\n function fundingListLength() external view returns (uint256) {\n\n return fundingList.length;\n\n }\n\n\n\n function getDeposit(uint256 depositID)\n\n external\n\n view\n\n returns (Deposit memory)\n\n {\n\n return deposits[depositID.sub(1)];\n\n }\n\n\n\n function getFunding(uint256 fundingID)\n\n external\n\n view\n\n returns (Funding memory)\n\n {\n\n return fundingList[fundingID.sub(1)];\n\n }\n\n\n\n function moneyMarketIncomeIndex() external returns (uint256) {\n\n return moneyMarket.incomeIndex();\n\n }\n\n\n\n /**\n\n Param setters\n\n */\n\n function setFeeModel(address newValue) external onlyOwner {\n\n require(newValue.isContract(), \"DInterest: not contract\");\n\n feeModel = IFeeModel(newValue);\n\n emit ESetParamAddress(msg.sender, \"feeModel\", newValue);\n\n }\n\n\n\n function setInterestModel(address newValue) external onlyOwner {\n\n require(newValue.isContract(), \"DInterest: not contract\");\n\n interestModel = IInterestModel(newValue);\n\n emit ESetParamAddress(msg.sender, \"interestModel\", newValue);\n\n }\n\n\n\n function setInterestOracle(address newValue) external onlyOwner {\n\n require(newValue.isContract(), \"DInterest: not contract\");\n\n interestOracle = IInterestOracle(newValue);\n\n emit ESetParamAddress(msg.sender, \"interestOracle\", newValue);\n\n }\n\n\n\n function setRewards(address newValue) external onlyOwner {\n\n require(newValue.isContract(), \"DInterest: not contract\");\n\n moneyMarket.setRewards(newValue);\n\n emit ESetParamAddress(msg.sender, \"moneyMarket.rewards\", newValue);\n\n }\n\n\n\n function setMinDepositPeriod(uint256 newValue) external onlyOwner {\n\n require(newValue <= MaxDepositPeriod, \"DInterest: invalid value\");\n\n MinDepositPeriod = newValue;\n\n emit ESetParamUint(msg.sender, \"MinDepositPeriod\", newValue);\n\n }\n\n\n\n function setMaxDepositPeriod(uint256 newValue) external onlyOwner {\n\n require(\n\n newValue >= MinDepositPeriod && newValue > 0,\n\n \"DInterest: invalid value\"\n\n );\n\n MaxDepositPeriod = newValue;\n\n emit ESetParamUint(msg.sender, \"MaxDepositPeriod\", newValue);\n\n }\n\n\n\n function setMinDepositAmount(uint256 newValue) external onlyOwner {\n\n require(newValue <= MaxDepositAmount, \"DInterest: invalid value\");\n\n MinDepositAmount = newValue;\n\n emit ESetParamUint(msg.sender, \"MinDepositAmount\", newValue);\n\n }\n\n\n\n function setMaxDepositAmount(uint256 newValue) external onlyOwner {\n\n require(\n\n newValue >= MinDepositAmount && newValue > 0,\n\n \"DInterest: invalid value\"\n\n );\n\n MaxDepositAmount = newValue;\n\n emit ESetParamUint(msg.sender, \"MaxDepositAmount\", newValue);\n\n }\n\n\n\n function setDepositNFTTokenURI(uint256 tokenId, string calldata newURI)\n\n external\n\n onlyOwner\n\n {\n\n depositNFT.setTokenURI(tokenId, newURI);\n\n }\n\n\n\n function setDepositNFTBaseURI(string calldata newURI) external onlyOwner {\n\n depositNFT.setBaseURI(newURI);\n\n }\n\n\n\n function setDepositNFTContractURI(string calldata newURI)\n\n external\n\n onlyOwner\n\n {\n\n depositNFT.setContractURI(newURI);\n\n }\n\n\n\n function setFundingNFTTokenURI(uint256 tokenId, string calldata newURI)\n\n external\n\n onlyOwner\n\n {\n\n fundingNFT.setTokenURI(tokenId, newURI);\n\n }\n\n\n\n function setFundingNFTBaseURI(string calldata newURI) external onlyOwner {\n\n fundingNFT.setBaseURI(newURI);\n\n }\n\n\n\n function setFundingNFTContractURI(string calldata newURI)\n\n external\n\n onlyOwner\n\n {\n\n fundingNFT.setContractURI(newURI);\n\n }\n\n\n\n /**\n\n Internal getters\n\n */\n\n\n\n function _getDeposit(uint256 depositID)\n\n internal\n\n view\n\n returns (Deposit storage)\n\n {\n\n return deposits[depositID.sub(1)];\n\n }\n\n\n\n function _getFunding(uint256 fundingID)\n\n internal\n\n view\n\n returns (Funding storage)\n\n {\n\n return fundingList[fundingID.sub(1)];\n\n }\n\n\n\n /**\n\n Internals\n\n */\n\n\n\n function _deposit(uint256 amount, uint256 maturationTimestamp) internal {\n\n // Cannot deposit 0\n\n require(amount > 0, \"DInterest: Deposit amount is 0\");\n\n\n\n // Ensure deposit amount is not more than maximum\n\n require(\n\n amount >= MinDepositAmount && amount <= MaxDepositAmount,\n\n \"DInterest: Deposit amount out of range\"\n\n );\n\n\n\n // Ensure deposit period is at least MinDepositPeriod\n\n uint256 depositPeriod = maturationTimestamp.sub(now);\n\n require(\n\n depositPeriod >= MinDepositPeriod &&\n\n depositPeriod <= MaxDepositPeriod,\n\n \"DInterest: Deposit period out of range\"\n\n );\n\n\n\n // Update totalDeposit\n\n totalDeposit = totalDeposit.add(amount);\n\n\n\n // Update funding related data\n\n uint256 id = deposits.length.add(1);\n\n unfundedUserDepositAmount = unfundedUserDepositAmount.add(amount);\n\n\n\n // Calculate interest\n\n uint256 interestAmount = calculateInterestAmount(amount, depositPeriod);\n\n require(interestAmount > 0, \"DInterest: interestAmount == 0\");\n\n\n\n // Update totalInterestOwed\n\n totalInterestOwed = totalInterestOwed.add(interestAmount);\n\n\n\n // Mint MPH for msg.sender\n\n uint256 mintMPHAmount = mphMinter.mintDepositorReward(\n\n msg.sender,\n\n interestAmount\n\n );\n\n\n\n // Record deposit data for `msg.sender`\n\n deposits.push(\n\n Deposit({\n\n amount: amount,\n\n maturationTimestamp: maturationTimestamp,\n\n interestOwed: interestAmount,\n\n initialMoneyMarketIncomeIndex: moneyMarket.incomeIndex(),\n\n active: true,\n\n finalSurplusIsNegative: false,\n\n finalSurplusAmount: 0,\n\n mintMPHAmount: mintMPHAmount\n\n })\n\n );\n\n\n\n // Transfer `amount` stablecoin to DInterest\n\n stablecoin.safeTransferFrom(msg.sender, address(this), amount);\n\n\n\n // Lend `amount` stablecoin to money market\n\n stablecoin.safeIncreaseAllowance(address(moneyMarket), amount);\n\n moneyMarket.deposit(amount);\n\n\n\n // Mint depositNFT\n\n depositNFT.mint(msg.sender, id);\n\n\n\n // Emit event\n\n emit EDeposit(\n\n msg.sender,\n\n id,\n\n amount,\n\n maturationTimestamp,\n\n interestAmount,\n\n mintMPHAmount\n\n );\n\n }\n\n\n\n function _withdraw(\n\n uint256 depositID,\n\n uint256 fundingID,\n\n bool early\n\n ) internal {\n\n Deposit storage depositEntry = _getDeposit(depositID);\n\n\n\n // Verify deposit is active and set to inactive\n\n require(depositEntry.active, \"DInterest: Deposit not active\");\n\n depositEntry.active = false;\n\n\n\n if (early) {\n\n // Verify `now < depositEntry.maturationTimestamp`\n\n require(\n\n now < depositEntry.maturationTimestamp,\n\n \"DInterest: Deposit mature, use withdraw() instead\"\n\n );\n\n } else {\n\n // Verify `now >= depositEntry.maturationTimestamp`\n\n require(\n\n now >= depositEntry.maturationTimestamp,\n\n \"DInterest: Deposit not mature\"\n\n );\n\n }\n\n\n\n // Verify msg.sender owns the depositNFT\n\n require(\n\n depositNFT.ownerOf(depositID) == msg.sender,\n\n \"DInterest: Sender doesn't own depositNFT\"\n\n );\n\n\n\n // Take back MPH\n\n uint256 takeBackMPHAmount = mphMinter.takeBackDepositorReward(\n\n msg.sender,\n\n depositEntry.mintMPHAmount,\n\n early\n\n );\n\n\n\n // Update totalDeposit\n\n totalDeposit = totalDeposit.sub(depositEntry.amount);\n\n\n\n // Update totalInterestOwed\n\n totalInterestOwed = totalInterestOwed.sub(depositEntry.interestOwed);\n\n\n\n // Burn depositNFT\n\n depositNFT.burn(depositID);\n\n\n\n uint256 feeAmount;\n\n uint256 withdrawAmount;\n\n if (early) {\n\n // Withdraw the principal of the deposit from money market\n\n withdrawAmount = depositEntry.amount;\n\n } else {\n\n // Withdraw the principal & the interest from money market\n\n feeAmount = feeModel.getFee(depositEntry.interestOwed);\n\n withdrawAmount = depositEntry.amount.add(depositEntry.interestOwed);\n\n }\n\n withdrawAmount = moneyMarket.withdraw(withdrawAmount);\n\n\n\n (bool depositIsNegative, uint256 depositSurplus) = surplusOfDeposit(\n\n depositID\n\n );\n\n\n\n // If deposit was funded, payout interest to funder\n\n if (depositIsFunded(depositID)) {\n\n Funding storage f = _getFunding(fundingID);\n\n require(\n\n depositID > f.fromDepositID && depositID <= f.toDepositID,\n\n \"DInterest: Deposit not funded by fundingID\"\n\n );\n\n uint256 currentMoneyMarketIncomeIndex = moneyMarket.incomeIndex();\n\n require(\n\n currentMoneyMarketIncomeIndex > 0,\n\n \"DInterest: currentMoneyMarketIncomeIndex == 0\"\n\n );\n\n uint256 interestAmount = f\n\n .recordedFundedDepositAmount\n\n .mul(currentMoneyMarketIncomeIndex)\n\n .div(f.recordedMoneyMarketIncomeIndex)\n\n .sub(f.recordedFundedDepositAmount);\n\n\n\n // Update funding values\n\n f.recordedFundedDepositAmount = f.recordedFundedDepositAmount.sub(\n\n depositEntry.amount\n\n );\n\n f.recordedMoneyMarketIncomeIndex = currentMoneyMarketIncomeIndex;\n\n\n\n // Send interest to funder\n\n uint256 transferToFunderAmount = (early && depositIsNegative)\n\n ? interestAmount.add(depositSurplus)\n\n : interestAmount;\n\n if (transferToFunderAmount > 0) {\n\n transferToFunderAmount = moneyMarket.withdraw(\n\n transferToFunderAmount\n\n );\n\n stablecoin.safeTransfer(\n\n fundingNFT.ownerOf(fundingID),\n\n transferToFunderAmount\n\n );\n\n }\n\n } else {\n\n // Remove deposit from future deficit fundings\n\n unfundedUserDepositAmount = unfundedUserDepositAmount.sub(\n\n depositEntry.amount\n\n );\n\n\n\n // Record remaining surplus\n\n depositEntry.finalSurplusIsNegative = depositIsNegative;\n\n depositEntry.finalSurplusAmount = depositSurplus;\n\n }\n\n\n\n // Send `withdrawAmount - feeAmount` stablecoin to `msg.sender`\n\n stablecoin.safeTransfer(msg.sender, withdrawAmount.sub(feeAmount));\n\n\n\n // Send `feeAmount` stablecoin to feeModel beneficiary\n\n stablecoin.safeTransfer(feeModel.beneficiary(), feeAmount);\n\n\n\n // Emit event\n\n emit EWithdraw(\n\n msg.sender,\n\n depositID,\n\n fundingID,\n\n early,\n\n takeBackMPHAmount\n\n );\n\n }\n\n\n\n function _fund(uint256 totalDeficit) internal {\n\n // Transfer `totalDeficit` stablecoins from msg.sender\n\n stablecoin.safeTransferFrom(msg.sender, address(this), totalDeficit);\n\n\n\n // Deposit `totalDeficit` stablecoins into moneyMarket\n\n stablecoin.safeIncreaseAllowance(address(moneyMarket), totalDeficit);\n\n moneyMarket.deposit(totalDeficit);\n\n\n\n // Mint fundingNFT\n\n fundingNFT.mint(msg.sender, fundingList.length);\n\n\n\n // Mint MPH for msg.sender\n\n uint256 mintMPHAmount = mphMinter.mintFunderReward(\n\n msg.sender,\n\n totalDeficit\n\n );\n\n\n\n // Emit event\n\n uint256 fundingID = fundingList.length;\n\n emit EFund(msg.sender, fundingID, totalDeficit, mintMPHAmount);\n\n }\n\n}\n\nlibrary DecMath {\n\n using SafeMath for uint256;\n\n\n\n uint256 internal constant PRECISION = 10**18;\n\n\n\n function decmul(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return a.mul(b).div(PRECISION);\n\n }\n\n\n\n function decdiv(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return a.mul(PRECISION).div(b);\n\n }\n\n}\n\ncontract ComptrollerMock {\n\n uint256 public constant CLAIM_AMOUNT = 10**18;\n\n ERC20Mock public comp;\n\n\n\n constructor (address _comp) public {\n\n comp = ERC20Mock(_comp);\n\n }\n\n\n\n function claimComp(address holder) external {\n\n comp.mint(holder, CLAIM_AMOUNT);\n\n }\n\n\n\n function getCompAddress() external view returns (address) {\n\n return address(comp);\n\n }\n\n}\n\ncontract LendingPoolAddressesProviderMock {\n\n address internal pool;\n\n address internal core;\n\n\n\n function getLendingPool() external view returns (address) {\n\n return pool;\n\n }\n\n\n\n function setLendingPoolImpl(address _pool) external {\n\n pool = _pool;\n\n }\n\n\n\n function getLendingPoolCore() external view returns (address) {\n\n return core;\n\n }\n\n\n\n function setLendingPoolCoreImpl(address _pool) external {\n\n core = _pool;\n\n }\n\n}\n\ncontract LendingPoolCoreMock {\n\n LendingPoolMock internal lendingPool;\n\n\n\n function setLendingPool(address lendingPoolAddress) public {\n\n lendingPool = LendingPoolMock(lendingPoolAddress);\n\n }\n\n\n\n function bounceTransfer(address _reserve, address _sender, uint256 _amount)\n\n external\n\n {\n\n ERC20 token = ERC20(_reserve);\n\n token.transferFrom(_sender, address(this), _amount);\n\n\n\n token.transfer(msg.sender, _amount);\n\n }\n\n\n\n // The equivalent of exchangeRateStored() for Compound cTokens\n\n function getReserveNormalizedIncome(address _reserve) external view returns (uint256) {\n\n (, , , , , , , , , , , address aTokenAddress, ) = lendingPool\n\n .getReserveData(_reserve);\n\n ATokenMock aToken = ATokenMock(aTokenAddress);\n\n return aToken.normalizedIncome();\n\n }\n\n}\n\ncontract LendingPoolMock {\n\n mapping(address => address) internal reserveAToken;\n\n LendingPoolCoreMock public core;\n\n\n\n constructor(address _core) public {\n\n core = LendingPoolCoreMock(_core);\n\n }\n\n\n\n function setReserveAToken(address _reserve, address _aTokenAddress) external {\n\n reserveAToken[_reserve] = _aTokenAddress;\n\n }\n\n\n\n function deposit(address _reserve, uint256 _amount, uint16)\n\n external\n\n {\n\n ERC20 token = ERC20(_reserve);\n\n core.bounceTransfer(_reserve, msg.sender, _amount);\n\n\n\n // Mint aTokens\n\n address aTokenAddress = reserveAToken[_reserve];\n\n ATokenMock aToken = ATokenMock(aTokenAddress);\n\n aToken.mint(msg.sender, _amount);\n\n token.transfer(aTokenAddress, _amount);\n\n }\n\n\n\n function getReserveData(address _reserve)\n\n external\n\n view\n\n returns (\n\n uint256,\n\n uint256,\n\n uint256,\n\n uint256,\n\n uint256 liquidityRate,\n\n uint256,\n\n uint256,\n\n uint256,\n\n uint256,\n\n uint256,\n\n uint256,\n\n address aTokenAddress,\n\n uint40\n\n )\n\n {\n\n aTokenAddress = reserveAToken[_reserve];\n\n ATokenMock aToken = ATokenMock(aTokenAddress);\n\n liquidityRate = aToken.liquidityRate();\n\n }\n\n}\n\ninterface IFeeModel {\n\n function beneficiary() external view returns (address payable);\n\n\n\n function getFee(uint256 _txAmount)\n\n external\n\n pure\n\n returns (uint256 _feeAmount);\n\n}\n\ncontract PercentageFeeModel is IFeeModel {\n\n using SafeMath for uint256;\n\n\n\n address payable public beneficiary;\n\n\n\n constructor(address payable _beneficiary) public {\n\n beneficiary = _beneficiary;\n\n }\n\n\n\n function getFee(uint256 _txAmount)\n\n external\n\n pure\n\n returns (uint256 _feeAmount)\n\n {\n\n _feeAmount = _txAmount.div(10); // Precision is decreased by 1 decimal place\n\n }\n\n}\n\ninterface IInterestOracle {\n\n function updateAndQuery() external returns (bool updated, uint256 value);\n\n\n\n function query() external view returns (uint256 value);\n\n\n\n function moneyMarket() external view returns (address);\n\n}\n\ninterface IInterestModel {\n\n function calculateInterestAmount(\n\n uint256 depositAmount,\n\n uint256 depositPeriodInSeconds,\n\n uint256 moneyMarketInterestRatePerSecond,\n\n bool surplusIsNegative,\n\n uint256 surplusAmount\n\n ) external view returns (uint256 interestAmount);\n\n}\n\ncontract LinearInterestModel {\n\n using SafeMath for uint256;\n\n using DecMath for uint256;\n\n\n\n uint256 public constant PRECISION = 10**18;\n\n uint256 public IRMultiplier;\n\n\n\n constructor(uint256 _IRMultiplier) public {\n\n IRMultiplier = _IRMultiplier;\n\n }\n\n\n\n function calculateInterestAmount(\n\n uint256 depositAmount,\n\n uint256 depositPeriodInSeconds,\n\n uint256 moneyMarketInterestRatePerSecond,\n\n bool, /*surplusIsNegative*/\n\n uint256 /*surplusAmount*/\n\n ) external view returns (uint256 interestAmount) {\n\n // interestAmount = depositAmount * moneyMarketInterestRatePerSecond * IRMultiplier * depositPeriodInSeconds\n\n interestAmount = depositAmount\n\n .mul(PRECISION)\n\n .decmul(moneyMarketInterestRatePerSecond)\n\n .decmul(IRMultiplier)\n\n .mul(depositPeriodInSeconds)\n\n .div(PRECISION);\n\n }\n\n}\n\ninterface IMoneyMarket {\n\n function deposit(uint256 amount) external;\n\n\n\n function withdraw(uint256 amountInUnderlying)\n\n external\n\n returns (uint256 actualAmountWithdrawn);\n\n\n\n function claimRewards() external; // Claims farmed tokens (e.g. COMP, CRV) and sends it to the rewards pool\n\n\n\n function totalValue() external returns (uint256); // The total value locked in the money market, in terms of the underlying stablecoin\n\n\n\n function incomeIndex() external returns (uint256); // Used for calculating the interest generated (e.g. cDai's price for the Compound market)\n\n\n\n function stablecoin() external view returns (address);\n\n\n\n function setRewards(address newValue) external;\n\n\n\n event ESetParamAddress(\n\n address indexed sender,\n\n string indexed paramName,\n\n address newValue\n\n );\n\n}\n\ncontract AaveMarket is IMoneyMarket, Ownable {\n\n using SafeMath for uint256;\n\n using SafeERC20 for ERC20;\n\n using Address for address;\n\n\n\n uint16 internal constant REFERRALCODE = 20; // Aave referral program code\n\n\n\n ILendingPoolAddressesProvider public provider; // Used for fetching the current address of LendingPool\n\n ERC20 public stablecoin;\n\n\n\n constructor(address _provider, address _stablecoin) public {\n\n // Verify input addresses\n\n require(\n\n _provider != address(0) && _stablecoin != address(0),\n\n \"AaveMarket: An input address is 0\"\n\n );\n\n require(\n\n _provider.isContract() && _stablecoin.isContract(),\n\n \"AaveMarket: An input address is not a contract\"\n\n );\n\n\n\n provider = ILendingPoolAddressesProvider(_provider);\n\n stablecoin = ERC20(_stablecoin);\n\n }\n\n\n\n function deposit(uint256 amount) external onlyOwner {\n\n require(amount > 0, \"AaveMarket: amount is 0\");\n\n\n\n ILendingPool lendingPool = ILendingPool(provider.getLendingPool());\n\n address lendingPoolCore = provider.getLendingPoolCore();\n\n\n\n // Transfer `amount` stablecoin from `msg.sender`\n\n stablecoin.safeTransferFrom(msg.sender, address(this), amount);\n\n\n\n // Approve `amount` stablecoin to lendingPool\n\n stablecoin.safeIncreaseAllowance(lendingPoolCore, amount);\n\n\n\n // Deposit `amount` stablecoin to lendingPool\n\n lendingPool.deposit(address(stablecoin), amount, REFERRALCODE);\n\n }\n\n\n\n function withdraw(uint256 amountInUnderlying)\n\n external\n\n onlyOwner\n\n returns (uint256 actualAmountWithdrawn)\n\n {\n\n require(amountInUnderlying > 0, \"AaveMarket: amountInUnderlying is 0\");\n\n\n\n ILendingPool lendingPool = ILendingPool(provider.getLendingPool());\n\n\n\n // Initialize aToken\n\n (, , , , , , , , , , , address aTokenAddress, ) = lendingPool\n\n .getReserveData(address(stablecoin));\n\n IAToken aToken = IAToken(aTokenAddress);\n\n\n\n // Redeem `amountInUnderlying` aToken, since 1 aToken = 1 stablecoin\n\n aToken.redeem(amountInUnderlying);\n\n\n\n // Transfer `amountInUnderlying` stablecoin to `msg.sender`\n\n stablecoin.safeTransfer(msg.sender, amountInUnderlying);\n\n\n\n return amountInUnderlying;\n\n }\n\n\n\n function claimRewards() external {}\n\n\n\n function totalValue() external returns (uint256) {\n\n ILendingPool lendingPool = ILendingPool(provider.getLendingPool());\n\n\n\n // Initialize aToken\n\n (, , , , , , , , , , , address aTokenAddress, ) = lendingPool\n\n .getReserveData(address(stablecoin));\n\n IAToken aToken = IAToken(aTokenAddress);\n\n\n\n return aToken.balanceOf(address(this));\n\n }\n\n\n\n function incomeIndex() external returns (uint256) {\n\n ILendingPoolCore lendingPoolCore = ILendingPoolCore(\n\n provider.getLendingPoolCore()\n\n );\n\n return lendingPoolCore.getReserveNormalizedIncome(address(stablecoin));\n\n }\n\n\n\n function setRewards(address newValue) external {}\n\n}\n\ninterface IAToken {\n\n function redeem(uint256 _amount) external;\n\n\n\n function balanceOf(address owner) external view returns (uint256);\n\n}\n\ninterface ILendingPool {\n\n function deposit(address _reserve, uint256 _amount, uint16 _referralCode)\n\n external;\n\n\n\n function getReserveData(address _reserve)\n\n external\n\n view\n\n returns (\n\n uint256 totalLiquidity,\n\n uint256 availableLiquidity,\n\n uint256 totalBorrowsStable,\n\n uint256 totalBorrowsVariable,\n\n uint256 liquidityRate,\n\n uint256 variableBorrowRate,\n\n uint256 stableBorrowRate,\n\n uint256 averageStableBorrowRate,\n\n uint256 utilizationRate,\n\n uint256 liquidityIndex,\n\n uint256 variableBorrowIndex,\n\n address aTokenAddress,\n\n uint40 lastUpdateTimestamp\n\n );\n\n}\n\ninterface ILendingPoolAddressesProvider {\n\n function getLendingPool() external view returns (address);\n\n\n\n function setLendingPoolImpl(address _pool) external;\n\n\n\n function getLendingPoolCore() external view returns (address payable);\n\n\n\n function setLendingPoolCoreImpl(address _lendingPoolCore) external;\n\n\n\n function getLendingPoolConfigurator() external view returns (address);\n\n\n\n function setLendingPoolConfiguratorImpl(address _configurator) external;\n\n\n\n function getLendingPoolDataProvider() external view returns (address);\n\n\n\n function setLendingPoolDataProviderImpl(address _provider) external;\n\n\n\n function getLendingPoolParametersProvider() external view returns (address);\n\n\n\n function setLendingPoolParametersProviderImpl(address _parametersProvider)\n\n external;\n\n\n\n function getTokenDistributor() external view returns (address);\n\n\n\n function setTokenDistributor(address _tokenDistributor) external;\n\n\n\n function getFeeProvider() external view returns (address);\n\n\n\n function setFeeProviderImpl(address _feeProvider) external;\n\n\n\n function getLendingPoolLiquidationManager() external view returns (address);\n\n\n\n function setLendingPoolLiquidationManager(address _manager) external;\n\n\n\n function getLendingPoolManager() external view returns (address);\n\n\n\n function setLendingPoolManager(address _lendingPoolManager) external;\n\n\n\n function getPriceOracle() external view returns (address);\n\n\n\n function setPriceOracle(address _priceOracle) external;\n\n\n\n function getLendingRateOracle() external view returns (address);\n\n\n\n function setLendingRateOracle(address _lendingRateOracle) external;\n\n}\n\ninterface ILendingPoolCore {\n\n // The equivalent of exchangeRateStored() for Compound cTokens\n\n function getReserveNormalizedIncome(address _reserve)\n\n external\n\n view\n\n returns (uint256);\n\n}\n\ncontract CompoundERC20Market is IMoneyMarket, Ownable {\n\n using DecMath for uint256;\n\n using SafeERC20 for ERC20;\n\n using Address for address;\n\n\n\n uint256 internal constant ERRCODE_OK = 0;\n\n\n\n ICERC20 public cToken;\n\n IComptroller public comptroller;\n\n address public rewards;\n\n ERC20 public stablecoin;\n\n\n\n constructor(\n\n address _cToken,\n\n address _comptroller,\n\n address _rewards,\n\n address _stablecoin\n\n ) public {\n\n // Verify input addresses\n\n require(\n\n _cToken != address(0) &&\n\n _comptroller != address(0) &&\n\n _rewards != address(0) &&\n\n _stablecoin != address(0),\n\n \"CompoundERC20Market: An input address is 0\"\n\n );\n\n require(\n\n _cToken.isContract() &&\n\n _comptroller.isContract() &&\n\n _rewards.isContract() &&\n\n _stablecoin.isContract(),\n\n \"CompoundERC20Market: An input address is not a contract\"\n\n );\n\n\n\n cToken = ICERC20(_cToken);\n\n comptroller = IComptroller(_comptroller);\n\n rewards = _rewards;\n\n stablecoin = ERC20(_stablecoin);\n\n }\n\n\n\n function deposit(uint256 amount) external onlyOwner {\n\n require(amount > 0, \"CompoundERC20Market: amount is 0\");\n\n\n\n // Transfer `amount` stablecoin from `msg.sender`\n\n stablecoin.safeTransferFrom(msg.sender, address(this), amount);\n\n\n\n // Deposit `amount` stablecoin into cToken\n\n stablecoin.safeIncreaseAllowance(address(cToken), amount);\n\n require(\n\n cToken.mint(amount) == ERRCODE_OK,\n\n \"CompoundERC20Market: Failed to mint cTokens\"\n\n );\n\n }\n\n\n\n function withdraw(uint256 amountInUnderlying)\n\n external\n\n onlyOwner\n\n returns (uint256 actualAmountWithdrawn)\n\n {\n\n require(\n\n amountInUnderlying > 0,\n\n \"CompoundERC20Market: amountInUnderlying is 0\"\n\n );\n\n\n\n // Withdraw `amountInUnderlying` stablecoin from cToken\n\n require(\n\n cToken.redeemUnderlying(amountInUnderlying) == ERRCODE_OK,\n\n \"CompoundERC20Market: Failed to redeem\"\n\n );\n\n\n\n // Transfer `amountInUnderlying` stablecoin to `msg.sender`\n\n stablecoin.safeTransfer(msg.sender, amountInUnderlying);\n\n\n\n return amountInUnderlying;\n\n }\n\n\n\n function claimRewards() external {\n\n comptroller.claimComp(address(this));\n\n ERC20 comp = ERC20(comptroller.getCompAddress());\n\n comp.safeTransfer(rewards, comp.balanceOf(address(this)));\n\n }\n\n\n\n function totalValue() external returns (uint256) {\n\n uint256 cTokenBalance = cToken.balanceOf(address(this));\n\n // Amount of stablecoin units that 1 unit of cToken can be exchanged for, scaled by 10^18\n\n uint256 cTokenPrice = cToken.exchangeRateCurrent();\n\n return cTokenBalance.decmul(cTokenPrice);\n\n }\n\n\n\n function incomeIndex() external returns (uint256) {\n\n return cToken.exchangeRateCurrent();\n\n }\n\n\n\n /**\n\n Param setters\n\n */\n\n function setRewards(address newValue) external onlyOwner {\n\n require(newValue.isContract(), \"CompoundERC20Market: not contract\");\n\n rewards = newValue;\n\n emit ESetParamAddress(msg.sender, \"rewards\", newValue);\n\n }\n\n}\n\ninterface ICERC20 {\n\n function transfer(address dst, uint256 amount) external returns (bool);\n\n\n\n function transferFrom(address src, address dst, uint256 amount)\n\n external\n\n returns (bool);\n\n\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n\n\n function allowance(address owner, address spender)\n\n external\n\n view\n\n returns (uint256);\n\n\n\n function balanceOf(address owner) external view returns (uint256);\n\n\n\n function balanceOfUnderlying(address owner) external returns (uint256);\n\n\n\n function getAccountSnapshot(address account)\n\n external\n\n view\n\n returns (uint256, uint256, uint256, uint256);\n\n\n\n function borrowRatePerBlock() external view returns (uint256);\n\n\n\n function supplyRatePerBlock() external view returns (uint256);\n\n\n\n function totalBorrowsCurrent() external returns (uint256);\n\n\n\n function borrowBalanceCurrent(address account) external returns (uint256);\n\n\n\n function borrowBalanceStored(address account)\n\n external\n\n view\n\n returns (uint256);\n\n\n\n function exchangeRateCurrent() external returns (uint256);\n\n\n\n function exchangeRateStored() external view returns (uint256);\n\n\n\n function getCash() external view returns (uint256);\n\n\n\n function accrueInterest() external returns (uint256);\n\n\n\n function seize(address liquidator, address borrower, uint256 seizeTokens)\n\n external\n\n returns (uint256);\n\n\n\n function mint(uint256 mintAmount) external returns (uint256);\n\n\n\n function redeem(uint256 redeemTokens) external returns (uint256);\n\n\n\n function redeemUnderlying(uint256 redeemAmount) external returns (uint256);\n\n\n\n function borrow(uint256 borrowAmount) external returns (uint256);\n\n\n\n function repayBorrow(uint256 repayAmount) external returns (uint256);\n\n\n\n function repayBorrowBehalf(address borrower, uint256 repayAmount)\n\n external\n\n returns (uint256);\n\n\n\n function liquidateBorrow(\n\n address borrower,\n\n uint256 repayAmount,\n\n address cTokenCollateral\n\n ) external returns (uint256);\n\n}\n\ninterface IComptroller {\n\n function claimComp(address holder) external;\n\n function getCompAddress() external view returns (address);\n\n}\n\ncontract YVaultMarket is IMoneyMarket, Ownable {\n\n using SafeMath for uint256;\n\n using DecMath for uint256;\n\n using SafeERC20 for ERC20;\n\n using Address for address;\n\n\n\n Vault public vault;\n\n ERC20 public stablecoin;\n\n\n\n constructor(address _vault, address _stablecoin) public {\n\n // Verify input addresses\n\n require(\n\n _vault != address(0) && _stablecoin != address(0),\n\n \"YVaultMarket: An input address is 0\"\n\n );\n\n require(\n\n _vault.isContract() && _stablecoin.isContract(),\n\n \"YVaultMarket: An input address is not a contract\"\n\n );\n\n\n\n vault = Vault(_vault);\n\n stablecoin = ERC20(_stablecoin);\n\n }\n\n\n\n function deposit(uint256 amount) external onlyOwner {\n\n require(amount > 0, \"YVaultMarket: amount is 0\");\n\n\n\n // Transfer `amount` stablecoin from `msg.sender`\n\n stablecoin.safeTransferFrom(msg.sender, address(this), amount);\n\n\n\n // Approve `amount` stablecoin to vault\n\n stablecoin.safeIncreaseAllowance(address(vault), amount);\n\n\n\n // Deposit `amount` stablecoin to vault\n\n vault.deposit(amount);\n\n }\n\n\n\n function withdraw(uint256 amountInUnderlying)\n\n external\n\n onlyOwner\n\n returns (uint256 actualAmountWithdrawn)\n\n {\n\n require(\n\n amountInUnderlying > 0,\n\n \"YVaultMarket: amountInUnderlying is 0\"\n\n );\n\n\n\n // Withdraw `amountInShares` shares from vault\n\n uint256 sharePrice = vault.getPricePerFullShare();\n\n uint256 amountInShares = amountInUnderlying.decdiv(sharePrice);\n\n vault.withdraw(amountInShares);\n\n\n\n // Transfer stablecoin to `msg.sender`\n\n actualAmountWithdrawn = stablecoin.balanceOf(address(this));\n\n stablecoin.safeTransfer(msg.sender, actualAmountWithdrawn);\n\n }\n\n\n\n function claimRewards() external {}\n\n\n\n function totalValue() external returns (uint256) {\n\n uint256 sharePrice = vault.getPricePerFullShare();\n\n uint256 shareBalance = vault.balanceOf(address(this));\n\n return shareBalance.decmul(sharePrice);\n\n }\n\n\n\n function incomeIndex() external returns (uint256) {\n\n return vault.getPricePerFullShare();\n\n }\n\n\n\n function setRewards(address newValue) external {}\n\n}\n\ninterface Vault {\n\n function deposit(uint256) external;\n\n\n\n function withdraw(uint256) external;\n\n\n\n function getPricePerFullShare() external view returns (uint256);\n\n\n\n /**\n\n * @dev Returns the amount of tokens in existence.\n\n */\n\n function totalSupply() external view returns (uint256);\n\n\n\n /**\n\n * @dev Returns the amount of tokens owned by `account`.\n\n */\n\n function balanceOf(address account) external view returns (uint256);\n\n\n\n /**\n\n * @dev Moves `amount` tokens from the caller's account to `recipient`.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * Emits a {Transfer} event.\n\n */\n\n function transfer(address recipient, uint256 amount)\n\n external\n\n returns (bool);\n\n\n\n /**\n\n * @dev Returns the remaining number of tokens that `spender` will be\n\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n\n * zero by default.\n\n *\n\n * This value changes when {approve} or {transferFrom} are called.\n\n */\n\n function allowance(address owner, address spender)\n\n external\n\n view\n\n returns (uint256);\n\n\n\n /**\n\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n\n * that someone may use both the old and the new allowance by unfortunate\n\n * transaction ordering. One possible solution to mitigate this race\n\n * condition is to first reduce the spender's allowance to 0 and set the\n\n * desired value afterwards:\n\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n\n *\n\n * Emits an {Approval} event.\n\n */\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n\n\n /**\n\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n\n * allowance mechanism. `amount` is then deducted from the caller's\n\n * allowance.\n\n *\n\n * Returns a boolean value indicating whether the operation succeeded.\n\n *\n\n * Emits a {Transfer} event.\n\n */\n\n function transferFrom(\n\n address sender,\n\n address recipient,\n\n uint256 amount\n\n ) external returns (bool);\n\n\n\n /**\n\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n\n * another (`to`).\n\n *\n\n * Note that `value` may be zero.\n\n */\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n\n\n /**\n\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n\n * a call to {approve}. `value` is the new allowance.\n\n */\n\n event Approval(\n\n address indexed owner,\n\n address indexed spender,\n\n uint256 value\n\n );\n\n}\n\ninterface IRewards {\n\n function notifyRewardAmount(uint256 reward) external;\n\n}\n\ncontract MPHMinter is Ownable {\n\n using Address for address;\n\n using DecMath for uint256;\n\n using SafeMath for uint256;\n\n\n\n uint256 internal constant PRECISION = 10**18;\n\n\n\n /**\n\n @notice The multiplier applied to the interest generated by a pool when minting MPH\n\n */\n\n mapping(address => uint256) public poolMintingMultiplier;\n\n /**\n\n @notice The multiplier applied to the interest generated by a pool when letting depositors keep MPH\n\n */\n\n mapping(address => uint256) public poolDepositorRewardMultiplier;\n\n /**\n\n @notice The multiplier applied to the interest generated by a pool when letting deficit funders keep MPH\n\n */\n\n mapping(address => uint256) public poolFunderRewardMultiplier;\n\n /**\n\n @notice Multiplier used for calculating dev reward\n\n */\n\n uint256 public devRewardMultiplier;\n\n\n\n event ESetParamAddress(\n\n address indexed sender,\n\n string indexed paramName,\n\n address newValue\n\n );\n\n event ESetParamUint(\n\n address indexed sender,\n\n string indexed paramName,\n\n uint256 newValue\n\n );\n\n\n\n /**\n\n External contracts\n\n */\n\n MPHToken public mph;\n\n address public govTreasury;\n\n address public devWallet;\n\n\n\n constructor(\n\n address _mph,\n\n address _govTreasury,\n\n address _devWallet,\n\n uint256 _devRewardMultiplier\n\n ) public {\n\n mph = MPHToken(_mph);\n\n govTreasury = _govTreasury;\n\n devWallet = _devWallet;\n\n devRewardMultiplier = _devRewardMultiplier;\n\n }\n\n\n\n function mintDepositorReward(address to, uint256 interestAmount)\n\n external\n\n returns (uint256)\n\n {\n\n uint256 multiplier = poolMintingMultiplier[msg.sender];\n\n uint256 mintAmount = interestAmount.decmul(multiplier);\n\n if (mintAmount == 0) {\n\n // sender is not a pool/has been deactivated\n\n return 0;\n\n }\n\n\n\n mph.ownerMint(to, mintAmount);\n\n mph.ownerMint(devWallet, mintAmount.decmul(devRewardMultiplier));\n\n return mintAmount;\n\n }\n\n\n\n function mintFunderReward(address to, uint256 interestAmount)\n\n external\n\n returns (uint256)\n\n {\n\n uint256 multiplier = poolMintingMultiplier[msg.sender].decmul(\n\n poolFunderRewardMultiplier[msg.sender]\n\n );\n\n uint256 mintAmount = interestAmount.decmul(multiplier);\n\n if (mintAmount == 0) {\n\n // sender is not a pool/has been deactivated\n\n return 0;\n\n }\n\n\n\n mph.ownerMint(to, mintAmount);\n\n mph.ownerMint(devWallet, mintAmount.decmul(devRewardMultiplier));\n\n return mintAmount;\n\n }\n\n\n\n function takeBackDepositorReward(\n\n address from,\n\n uint256 mintMPHAmount,\n\n bool early\n\n ) external returns (uint256) {\n\n uint256 takeBackAmount = early\n\n ? mintMPHAmount\n\n : mintMPHAmount.decmul(\n\n PRECISION.sub(poolDepositorRewardMultiplier[msg.sender])\n\n );\n\n if (takeBackAmount == 0) {\n\n // sender is not a pool/has been deactivated\n\n return 0;\n\n }\n\n\n\n mph.ownerTransfer(from, govTreasury, takeBackAmount);\n\n return takeBackAmount;\n\n }\n\n\n\n /**\n\n Param setters\n\n */\n\n function setGovTreasury(address newValue) external onlyOwner {\n\n require(newValue != address(0), \"MPHMinter: 0 address\");\n\n govTreasury = newValue;\n\n emit ESetParamAddress(msg.sender, \"govTreasury\", newValue);\n\n }\n\n\n\n function setDevWallet(address newValue) external onlyOwner {\n\n require(newValue != address(0), \"MPHMinter: 0 address\");\n\n devWallet = newValue;\n\n emit ESetParamAddress(msg.sender, \"devWallet\", newValue);\n\n }\n\n\n\n function setPoolMintingMultiplier(address pool, uint256 newMultiplier)\n\n external\n\n onlyOwner\n\n {\n\n require(pool.isContract(), \"MPHMinter: pool not contract\");\n\n poolMintingMultiplier[pool] = newMultiplier;\n\n emit ESetParamUint(msg.sender, \"poolMintingMultiplier\", newMultiplier);\n\n }\n\n\n\n function setPoolDepositorRewardMultiplier(\n\n address pool,\n\n uint256 newMultiplier\n\n ) external onlyOwner {\n\n require(pool.isContract(), \"MPHMinter: pool not contract\");\n\n require(newMultiplier <= PRECISION, \"MPHMinter: invalid multiplier\");\n\n poolDepositorRewardMultiplier[pool] = newMultiplier;\n\n emit ESetParamUint(\n\n msg.sender,\n\n \"poolDepositorRewardMultiplier\",\n\n newMultiplier\n\n );\n\n }\n\n\n\n function setPoolFunderRewardMultiplier(address pool, uint256 newMultiplier)\n\n external\n\n onlyOwner\n\n {\n\n require(pool.isContract(), \"MPHMinter: pool not contract\");\n\n poolFunderRewardMultiplier[pool] = newMultiplier;\n\n emit ESetParamUint(\n\n msg.sender,\n\n \"poolFunderRewardMultiplier\",\n\n newMultiplier\n\n );\n\n }\n\n}\n\ncontract IRewardDistributionRecipient is Ownable {\n\n mapping(address => bool) public isRewardDistribution;\n\n\n\n function notifyRewardAmount(uint256 reward) external;\n\n\n\n modifier onlyRewardDistribution() {\n\n require(\n\n isRewardDistribution[_msgSender()],\n\n \"Caller is not reward distribution\"\n\n );\n\n _;\n\n }\n\n\n\n function setRewardDistribution(\n\n address _rewardDistribution,\n\n bool _isRewardDistribution\n\n ) external onlyOwner {\n\n isRewardDistribution[_rewardDistribution] = _isRewardDistribution;\n\n }\n\n}\n\ncontract LPTokenWrapper {\n\n using SafeMath for uint256;\n\n using SafeERC20 for IERC20;\n\n\n\n IERC20 public stakeToken;\n\n\n\n uint256 private _totalSupply;\n\n\n\n mapping(address => uint256) private _balances;\n\n\n\n constructor(address _stakeToken) public {\n\n stakeToken = IERC20(_stakeToken);\n\n }\n\n\n\n function totalSupply() public view returns (uint256) {\n\n return _totalSupply;\n\n }\n\n\n\n function balanceOf(address account) public view returns (uint256) {\n\n return _balances[account];\n\n }\n\n\n\n function stake(uint256 amount) public {\n\n _totalSupply = _totalSupply.add(amount);\n\n _balances[msg.sender] = _balances[msg.sender].add(amount);\n\n stakeToken.safeTransferFrom(msg.sender, address(this), amount);\n\n }\n\n\n\n function withdraw(uint256 amount) public {\n\n _totalSupply = _totalSupply.sub(amount);\n\n _balances[msg.sender] = _balances[msg.sender].sub(amount);\n\n stakeToken.safeTransfer(msg.sender, amount);\n\n }\n\n}\n\ncontract Rewards is LPTokenWrapper, IRewardDistributionRecipient {\n\n IERC20 public rewardToken;\n\n uint256 public constant DURATION = 7 days;\n\n\n\n uint256 public starttime;\n\n uint256 public periodFinish = 0;\n\n uint256 public rewardRate = 0;\n\n uint256 public lastUpdateTime;\n\n uint256 public rewardPerTokenStored;\n\n\n\n mapping(address => uint256) public userRewardPerTokenPaid;\n\n mapping(address => uint256) public rewards;\n\n\n\n event RewardAdded(uint256 reward);\n\n event Staked(address indexed user, uint256 amount);\n\n event Withdrawn(address indexed user, uint256 amount);\n\n event RewardPaid(address indexed user, uint256 reward);\n\n\n\n modifier updateReward(address account) {\n\n rewardPerTokenStored = rewardPerToken();\n\n lastUpdateTime = lastTimeRewardApplicable();\n\n if (account != address(0)) {\n\n rewards[account] = earned(account);\n\n userRewardPerTokenPaid[account] = rewardPerTokenStored;\n\n }\n\n _;\n\n }\n\n\n\n modifier checkStart {\n\n require(block.timestamp >= starttime, \"Rewards: not start\");\n\n _;\n\n }\n\n\n\n constructor(\n\n address _stakeToken,\n\n address _rewardToken,\n\n uint256 _starttime\n\n ) public LPTokenWrapper(_stakeToken) {\n\n rewardToken = IERC20(_rewardToken);\n\n starttime = _starttime;\n\n }\n\n\n\n function lastTimeRewardApplicable() public view returns (uint256) {\n\n return Math.min(block.timestamp, periodFinish);\n\n }\n\n\n\n function rewardPerToken() public view returns (uint256) {\n\n if (totalSupply() == 0) {\n\n return rewardPerTokenStored;\n\n }\n\n return\n\n rewardPerTokenStored.add(\n\n lastTimeRewardApplicable()\n\n .sub(lastUpdateTime)\n\n .mul(rewardRate)\n\n .mul(1e18)\n\n .div(totalSupply())\n\n );\n\n }\n\n\n\n function earned(address account) public view returns (uint256) {\n\n return\n\n balanceOf(account)\n\n .mul(rewardPerToken().sub(userRewardPerTokenPaid[account]))\n\n .div(1e18)\n\n .add(rewards[account]);\n\n }\n\n\n\n // stake visibility is public as overriding LPTokenWrapper's stake() function\n\n function stake(uint256 amount) public updateReward(msg.sender) checkStart {\n\n require(amount > 0, \"Rewards: cannot stake 0\");\n\n super.stake(amount);\n\n emit Staked(msg.sender, amount);\n\n }\n\n\n\n function withdraw(uint256 amount)\n\n public\n\n updateReward(msg.sender)\n\n checkStart\n\n {\n\n require(amount > 0, \"Rewards: cannot withdraw 0\");\n\n super.withdraw(amount);\n\n emit Withdrawn(msg.sender, amount);\n\n }\n\n\n\n function exit() external {\n\n withdraw(balanceOf(msg.sender));\n\n getReward();\n\n }\n\n\n\n function getReward() public updateReward(msg.sender) checkStart {\n\n uint256 reward = earned(msg.sender);\n\n if (reward > 0) {\n\n rewards[msg.sender] = 0;\n\n rewardToken.safeTransfer(msg.sender, reward);\n\n emit RewardPaid(msg.sender, reward);\n\n }\n\n }\n\n\n\n function notifyRewardAmount(uint256 reward)\n\n external\n\n onlyRewardDistribution\n\n updateReward(address(0))\n\n {\n\n // https://sips.synthetix.io/sips/sip-77\n\n require(reward > 0, \"Rewards: reward == 0\");\n\n require(\n\n reward < uint256(-1) / 10**18,\n\n \"Rewards: rewards too large, would lock\"\n\n );\n\n if (block.timestamp > starttime) {\n\n if (block.timestamp >= periodFinish) {\n\n rewardRate = reward.div(DURATION);\n\n } else {\n\n uint256 remaining = periodFinish.sub(block.timestamp);\n\n uint256 leftover = remaining.mul(rewardRate);\n\n rewardRate = reward.add(leftover).div(DURATION);\n\n }\n\n lastUpdateTime = block.timestamp;\n\n periodFinish = block.timestamp.add(DURATION);\n\n emit RewardAdded(reward);\n\n } else {\n\n rewardRate = reward.div(DURATION);\n\n lastUpdateTime = starttime;\n\n periodFinish = starttime.add(DURATION);\n\n emit RewardAdded(reward);\n\n }\n\n }\n\n}\n\ncontract OneSplitDumper is SignerRole {\n\n using SafeERC20 for IERC20;\n\n\n\n OneSplitAudit public oneSplit;\n\n IRewards public rewards;\n\n IERC20 public rewardToken;\n\n\n\n constructor(\n\n address _oneSplit,\n\n address _rewards,\n\n address _rewardToken\n\n ) public {\n\n oneSplit = OneSplitAudit(_oneSplit);\n\n rewards = IRewards(_rewards);\n\n rewardToken = IERC20(_rewardToken);\n\n }\n\n\n\n function getDumpParams(address tokenAddress, uint256 parts)\n\n external\n\n view\n\n returns (uint256 returnAmount, uint256[] memory distribution)\n\n {\n\n IERC20 token = IERC20(tokenAddress);\n\n uint256 tokenBalance = token.balanceOf(address(this));\n\n (returnAmount, distribution) = oneSplit.getExpectedReturn(\n\n tokenAddress,\n\n address(rewardToken),\n\n tokenBalance,\n\n parts,\n\n 0\n\n );\n\n }\n\n\n\n function dump(\n\n address tokenAddress,\n\n uint256 returnAmount,\n\n uint256[] calldata distribution\n\n ) external onlySigner {\n\n // dump token for rewardToken\n\n IERC20 token = IERC20(tokenAddress);\n\n uint256 tokenBalance = token.balanceOf(address(this));\n\n token.safeIncreaseAllowance(address(oneSplit), tokenBalance);\n\n\n\n uint256 receivedRewardTokenAmount = oneSplit.swap(\n\n tokenAddress,\n\n address(rewardToken),\n\n tokenBalance,\n\n returnAmount,\n\n distribution,\n\n 0\n\n );\n\n require(\n\n receivedRewardTokenAmount > 0,\n\n \"OneSplitDumper: receivedRewardTokenAmount == 0\"\n\n );\n\n }\n\n\n\n function notify() external onlySigner {\n\n uint256 balance = rewardToken.balanceOf(address(this));\n\n rewardToken.safeTransfer(address(rewards), balance);\n\n rewards.notifyRewardAmount(balance);\n\n }\n\n}\n\ninterface ICurveFi {\n\n function remove_liquidity_imbalance(\n\n uint256[2] calldata amounts,\n\n uint256 max_burn_amount\n\n ) external;\n\n\n\n function remove_liquidity_imbalance(\n\n uint256[3] calldata amounts,\n\n uint256 max_burn_amount\n\n ) external;\n\n\n\n function remove_liquidity_imbalance(\n\n uint256[4] calldata amounts,\n\n uint256 max_burn_amount\n\n ) external;\n\n\n\n function remove_liquidity_imbalance(\n\n uint256[5] calldata amounts,\n\n uint256 max_burn_amount\n\n ) external;\n\n\n\n function remove_liquidity(uint256 _amount, uint256[2] calldata amounts)\n\n external;\n\n\n\n function remove_liquidity(uint256 _amount, uint256[3] calldata amounts)\n\n external;\n\n\n\n function remove_liquidity(uint256 _amount, uint256[4] calldata amounts)\n\n external;\n\n\n\n function remove_liquidity(uint256 _amount, uint256[5] calldata amounts)\n\n external;\n\n}\n\ninterface Zap {\n\n function remove_liquidity_one_coin(\n\n uint256,\n\n int128,\n\n uint256\n\n ) external;\n\n}\n\ninterface OneSplitAudit {\n\n function swap(\n\n address fromToken,\n\n address destToken,\n\n uint256 amount,\n\n uint256 minReturn,\n\n uint256[] calldata distribution,\n\n uint256 flags\n\n ) external payable returns (uint256 returnAmount);\n\n\n\n function getExpectedReturn(\n\n address fromToken,\n\n address destToken,\n\n uint256 amount,\n\n uint256 parts,\n\n uint256 flags // See constants in IOneSplit.sol\n\n )\n\n external\n\n view\n\n returns (uint256 returnAmount, uint256[] memory distribution);\n\n}\n\ninterface yERC20 {\n\n function balanceOf(address owner) external view returns (uint256);\n\n\n\n function deposit(uint256 _amount) external;\n\n\n\n function withdraw(uint256 _amount) external;\n\n\n\n function getPricePerFullShare() external view returns (uint256);\n\n}\n\ncontract CurveLPWithdrawer is SignerRole {\n\n function curveWithdraw2(\n\n address lpTokenAddress,\n\n address curvePoolAddress,\n\n uint256[2] calldata minAmounts\n\n ) external onlySigner {\n\n IERC20 lpToken = IERC20(lpTokenAddress);\n\n uint256 lpTokenBalance = lpToken.balanceOf(address(this));\n\n ICurveFi curvePool = ICurveFi(curvePoolAddress);\n\n curvePool.remove_liquidity(lpTokenBalance, minAmounts);\n\n }\n\n\n\n function curveWithdraw3(\n\n address lpTokenAddress,\n\n address curvePoolAddress,\n\n uint256[3] calldata minAmounts\n\n ) external onlySigner {\n\n IERC20 lpToken = IERC20(lpTokenAddress);\n\n uint256 lpTokenBalance = lpToken.balanceOf(address(this));\n\n ICurveFi curvePool = ICurveFi(curvePoolAddress);\n\n curvePool.remove_liquidity(lpTokenBalance, minAmounts);\n\n }\n\n\n\n function curveWithdraw4(\n\n address lpTokenAddress,\n\n address curvePoolAddress,\n\n uint256[4] calldata minAmounts\n\n ) external onlySigner {\n\n IERC20 lpToken = IERC20(lpTokenAddress);\n\n uint256 lpTokenBalance = lpToken.balanceOf(address(this));\n\n ICurveFi curvePool = ICurveFi(curvePoolAddress);\n\n curvePool.remove_liquidity(lpTokenBalance, minAmounts);\n\n }\n\n\n\n function curveWithdraw5(\n\n address lpTokenAddress,\n\n address curvePoolAddress,\n\n uint256[5] calldata minAmounts\n\n ) external onlySigner {\n\n IERC20 lpToken = IERC20(lpTokenAddress);\n\n uint256 lpTokenBalance = lpToken.balanceOf(address(this));\n\n ICurveFi curvePool = ICurveFi(curvePoolAddress);\n\n curvePool.remove_liquidity(lpTokenBalance, minAmounts);\n\n }\n\n\n\n function curveWithdrawOneCoin(\n\n address lpTokenAddress,\n\n address curvePoolAddress,\n\n int128 coinIndex,\n\n uint256 minAmount\n\n ) external onlySigner {\n\n IERC20 lpToken = IERC20(lpTokenAddress);\n\n uint256 lpTokenBalance = lpToken.balanceOf(address(this));\n\n Zap curvePool = Zap(curvePoolAddress);\n\n curvePool.remove_liquidity_one_coin(\n\n lpTokenBalance,\n\n coinIndex,\n\n minAmount\n\n );\n\n }\n\n}\n\ncontract YearnWithdrawer is SignerRole {\n\n function yearnWithdraw(address yTokenAddress) external onlySigner {\n\n yERC20 yToken = yERC20(yTokenAddress);\n\n uint256 balance = yToken.balanceOf(address(this));\n\n yToken.withdraw(balance);\n\n }\n\n}\n\ncontract ERC165 is IERC165 {\n\n /*\n\n * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7\n\n */\n\n bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;\n\n\n\n /**\n\n * @dev Mapping of interface ids to whether or not it's supported.\n\n */\n\n mapping(bytes4 => bool) private _supportedInterfaces;\n\n\n\n constructor () internal {\n\n // Derived contracts need only register support for their own interfaces,\n\n // we register support for ERC165 itself here\n\n _registerInterface(_INTERFACE_ID_ERC165);\n\n }\n\n\n\n /**\n\n * @dev See {IERC165-supportsInterface}.\n\n *\n\n * Time complexity O(1), guaranteed to always use less than 30 000 gas.\n\n */\n\n function supportsInterface(bytes4 interfaceId) external view returns (bool) {\n\n return _supportedInterfaces[interfaceId];\n\n }\n\n\n\n /**\n\n * @dev Registers the contract as an implementer of the interface defined by\n\n * `interfaceId`. Support of the actual ERC165 interface is automatic and\n\n * registering its interface id is not required.\n\n *\n\n * See {IERC165-supportsInterface}.\n\n *\n\n * Requirements:\n\n *\n\n * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).\n\n */\n\n function _registerInterface(bytes4 interfaceId) internal {\n\n require(interfaceId != 0xffffffff, \"ERC165: invalid interface id\");\n\n _supportedInterfaces[interfaceId] = true;\n\n }\n\n}\n\ncontract ERC20 is Context, IERC20 {\n\n using SafeMath for uint256;\n\n\n\n mapping (address => uint256) private _balances;\n\n\n\n mapping (address => mapping (address => uint256)) private _allowances;\n\n\n\n uint256 private _totalSupply;\n\n\n\n /**\n\n * @dev See {IERC20-totalSupply}.\n\n */\n\n function totalSupply() public view returns (uint256) {\n\n return _totalSupply;\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-balanceOf}.\n\n */\n\n function balanceOf(address account) public view returns (uint256) {\n\n return _balances[account];\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-transfer}.\n\n *\n\n * Requirements:\n\n *\n\n * - `recipient` cannot be the zero address.\n\n * - the caller must have a balance of at least `amount`.\n\n */\n\n function transfer(address recipient, uint256 amount) public returns (bool) {\n\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-allowance}.\n\n */\n\n function allowance(address owner, address spender) public view returns (uint256) {\n\n return _allowances[owner][spender];\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-approve}.\n\n *\n\n * Requirements:\n\n *\n\n * - `spender` cannot be the zero address.\n\n */\n\n function approve(address spender, uint256 amount) public returns (bool) {\n\n _approve(_msgSender(), spender, amount);\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev See {IERC20-transferFrom}.\n\n *\n\n * Emits an {Approval} event indicating the updated allowance. This is not\n\n * required by the EIP. See the note at the beginning of {ERC20};\n\n *\n\n * Requirements:\n\n * - `sender` and `recipient` cannot be the zero address.\n\n * - `sender` must have a balance of at least `amount`.\n\n * - the caller must have allowance for `sender`'s tokens of at least\n\n * `amount`.\n\n */\n\n function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {\n\n _transfer(sender, recipient, amount);\n\n _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, \"ERC20: transfer amount exceeds allowance\"));\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n\n *\n\n * This is an alternative to {approve} that can be used as a mitigation for\n\n * problems described in {IERC20-approve}.\n\n *\n\n * Emits an {Approval} event indicating the updated allowance.\n\n *\n\n * Requirements:\n\n *\n\n * - `spender` cannot be the zero address.\n\n */\n\n function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {\n\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n\n *\n\n * This is an alternative to {approve} that can be used as a mitigation for\n\n * problems described in {IERC20-approve}.\n\n *\n\n * Emits an {Approval} event indicating the updated allowance.\n\n *\n\n * Requirements:\n\n *\n\n * - `spender` cannot be the zero address.\n\n * - `spender` must have allowance for the caller of at least\n\n * `subtractedValue`.\n\n */\n\n function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {\n\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, \"ERC20: decreased allowance below zero\"));\n\n return true;\n\n }\n\n\n\n /**\n\n * @dev Moves tokens `amount` from `sender` to `recipient`.\n\n *\n\n * This is internal function is equivalent to {transfer}, and can be used to\n\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n\n *\n\n * Emits a {Transfer} event.\n\n *\n\n * Requirements:\n\n *\n\n * - `sender` cannot be the zero address.\n\n * - `recipient` cannot be the zero address.\n\n * - `sender` must have a balance of at least `amount`.\n\n */\n\n function _transfer(address sender, address recipient, uint256 amount) internal {\n\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n\n\n _balances[sender] = _balances[sender].sub(amount, \"ERC20: transfer amount exceeds balance\");\n\n _balances[recipient] = _balances[recipient].add(amount);\n\n emit Transfer(sender, recipient, amount);\n\n }\n\n\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n\n * the total supply.\n\n *\n\n * Emits a {Transfer} event with `from` set to the zero address.\n\n *\n\n * Requirements\n\n *\n\n * - `to` cannot be the zero address.\n\n */\n\n function _mint(address account, uint256 amount) internal {\n\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n\n\n _totalSupply = _totalSupply.add(amount);\n\n _balances[account] = _balances[account].add(amount);\n\n emit Transfer(address(0), account, amount);\n\n }\n\n\n\n /**\n\n * @dev Destroys `amount` tokens from `account`, reducing the\n\n * total supply.\n\n *\n\n * Emits a {Transfer} event with `to` set to the zero address.\n\n *\n\n * Requirements\n\n *\n\n * - `account` cannot be the zero address.\n\n * - `account` must have at least `amount` tokens.\n\n */\n\n function _burn(address account, uint256 amount) internal {\n\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n\n\n _balances[account] = _balances[account].sub(amount, \"ERC20: burn amount exceeds balance\");\n\n _totalSupply = _totalSupply.sub(amount);\n\n emit Transfer(account, address(0), amount);\n\n }\n\n\n\n /**\n\n * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.\n\n *\n\n * This is internal function is equivalent to `approve`, and can be used to\n\n * e.g. set automatic allowances for certain subsystems, etc.\n\n *\n\n * Emits an {Approval} event.\n\n *\n\n * Requirements:\n\n *\n\n * - `owner` cannot be the zero address.\n\n * - `spender` cannot be the zero address.\n\n */\n\n function _approve(address owner, address spender, uint256 amount) internal {\n\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n\n }\n\n\n\n /**\n\n * @dev Destroys `amount` tokens from `account`.`amount` is then deducted\n\n * from the caller's allowance.\n\n *\n\n * See {_burn} and {_approve}.\n\n */\n\n function _burnFrom(address account, uint256 amount) internal {\n\n _burn(account, amount);\n\n _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, \"ERC20: burn amount exceeds allowance\"));\n\n }\n\n}\n\ncontract ERC20Detailed is IERC20 {\n\n string private _name;\n\n string private _symbol;\n\n uint8 private _decimals;\n\n\n\n /**\n\n * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of\n\n * these values are immutable: they can only be set once during\n\n * construction.\n\n */\n\n constructor (string memory name, string memory symbol, uint8 decimals) public {\n\n _name = name;\n\n _symbol = symbol;\n\n _decimals = decimals;\n\n }\n\n\n\n /**\n\n * @dev Returns the name of the token.\n\n */\n\n function name() public view returns (string memory) {\n\n return _name;\n\n }\n\n\n\n /**\n\n * @dev Returns the symbol of the token, usually a shorter version of the\n\n * name.\n\n */\n\n function symbol() public view returns (string memory) {\n\n return _symbol;\n\n }\n\n\n\n /**\n\n * @dev Returns the number of decimals used to get its user representation.\n\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n\n * be displayed to a user as `5,05` (`505 / 10 ** 2`).\n\n *\n\n * Tokens usually opt for a value of 18, imitating the relationship between\n\n * Ether and Wei.\n\n *\n\n * NOTE: This information is only used for _display_ purposes: it in\n\n * no way affects any of the arithmetic of the contract, including\n\n * {IERC20-balanceOf} and {IERC20-transfer}.\n\n */\n\n function decimals() public view returns (uint8) {\n\n return _decimals;\n\n }\n\n}\n\ncontract ERC721 is Context, ERC165, IERC721 {\n\n using SafeMath for uint256;\n\n using Address for address;\n\n using Counters for Counters.Counter;\n\n\n\n // Equals to `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`\n\n // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`\n\n bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;\n\n\n\n // Mapping from token ID to owner\n\n mapping (uint256 => address) private _tokenOwner;\n\n\n\n // Mapping from token ID to approved address\n\n mapping (uint256 => address) private _tokenApprovals;\n\n\n\n // Mapping from owner to number of owned token\n\n mapping (address => Counters.Counter) private _ownedTokensCount;\n\n\n\n // Mapping from owner to operator approvals\n\n mapping (address => mapping (address => bool)) private _operatorApprovals;\n\n\n\n /*\n\n * bytes4(keccak256('balanceOf(address)')) == 0x70a08231\n\n * bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e\n\n * bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3\n\n * bytes4(keccak256('getApproved(uint256)')) == 0x081812fc\n\n * bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465\n\n * bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5\n\n * bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd\n\n * bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e\n\n * bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde\n\n *\n\n * => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^\n\n * 0xa22cb465 ^ 0xe985e9c ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd\n\n */\n\n bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;\n\n\n\n constructor () public {\n\n // register the supported interfaces to conform to ERC721 via ERC165\n\n _registerInterface(_INTERFACE_ID_ERC721);\n\n }\n\n\n\n /**\n\n * @dev Gets the balance of the specified address.\n\n * @param owner address to query the balance of\n\n * @return uint256 representing the amount owned by the passed address\n\n */\n\n function balanceOf(address owner) public view returns (uint256) {\n\n require(owner != address(0), \"ERC721: balance query for the zero address\");\n\n\n\n return _ownedTokensCount[owner].current();\n\n }\n\n\n\n /**\n\n * @dev Gets the owner of the specified token ID.\n\n * @param tokenId uint256 ID of the token to query the owner of\n\n * @return address currently marked as the owner of the given token ID\n\n */\n\n function ownerOf(uint256 tokenId) public view returns (address) {\n\n address owner = _tokenOwner[tokenId];\n\n require(owner != address(0), \"ERC721: owner query for nonexistent token\");\n\n\n\n return owner;\n\n }\n\n\n\n /**\n\n * @dev Approves another address to transfer the given token ID\n\n * The zero address indicates there is no approved address.\n\n * There can only be one approved address per token at a given time.\n\n * Can only be called by the token owner or an approved operator.\n\n * @param to address to be approved for the given token ID\n\n * @param tokenId uint256 ID of the token to be approved\n\n */\n\n function approve(address to, uint256 tokenId) public {\n\n address owner = ownerOf(tokenId);\n\n require(to != owner, \"ERC721: approval to current owner\");\n\n\n\n require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n\n \"ERC721: approve caller is not owner nor approved for all\"\n\n );\n\n\n\n _tokenApprovals[tokenId] = to;\n\n emit Approval(owner, to, tokenId);\n\n }\n\n\n\n /**\n\n * @dev Gets the approved address for a token ID, or zero if no address set\n\n * Reverts if the token ID does not exist.\n\n * @param tokenId uint256 ID of the token to query the approval of\n\n * @return address currently approved for the given token ID\n\n */\n\n function getApproved(uint256 tokenId) public view returns (address) {\n\n require(_exists(tokenId), \"ERC721: approved query for nonexistent token\");\n\n\n\n return _tokenApprovals[tokenId];\n\n }\n\n\n\n /**\n\n * @dev Sets or unsets the approval of a given operator\n\n * An operator is allowed to transfer all tokens of the sender on their behalf.\n\n * @param to operator address to set the approval\n\n * @param approved representing the status of the approval to be set\n\n */\n\n function setApprovalForAll(address to, bool approved) public {\n\n require(to != _msgSender(), \"ERC721: approve to caller\");\n\n\n\n _operatorApprovals[_msgSender()][to] = approved;\n\n emit ApprovalForAll(_msgSender(), to, approved);\n\n }\n\n\n\n /**\n\n * @dev Tells whether an operator is approved by a given owner.\n\n * @param owner owner address which you want to query the approval of\n\n * @param operator operator address which you want to query the approval of\n\n * @return bool whether the given operator is approved by the given owner\n\n */\n\n function isApprovedForAll(address owner, address operator) public view returns (bool) {\n\n return _operatorApprovals[owner][operator];\n\n }\n\n\n\n /**\n\n * @dev Transfers the ownership of a given token ID to another address.\n\n * Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n\n * Requires the msg.sender to be the owner, approved, or operator.\n\n * @param from current owner of the token\n\n * @param to address to receive the ownership of the given token ID\n\n * @param tokenId uint256 ID of the token to be transferred\n\n */\n\n function transferFrom(address from, address to, uint256 tokenId) public {\n\n //solhint-disable-next-line max-line-length\n\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: transfer caller is not owner nor approved\");\n\n\n\n _transferFrom(from, to, tokenId);\n\n }\n\n\n\n /**\n\n * @dev Safely transfers the ownership of a given token ID to another address\n\n * If the target address is a contract, it must implement {IERC721Receiver-onERC721Received},\n\n * which is called upon a safe transfer, and return the magic value\n\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n\n * the transfer is reverted.\n\n * Requires the msg.sender to be the owner, approved, or operator\n\n * @param from current owner of the token\n\n * @param to address to receive the ownership of the given token ID\n\n * @param tokenId uint256 ID of the token to be transferred\n\n */\n\n function safeTransferFrom(address from, address to, uint256 tokenId) public {\n\n safeTransferFrom(from, to, tokenId, \"\");\n\n }\n\n\n\n /**\n\n * @dev Safely transfers the ownership of a given token ID to another address\n\n * If the target address is a contract, it must implement {IERC721Receiver-onERC721Received},\n\n * which is called upon a safe transfer, and return the magic value\n\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n\n * the transfer is reverted.\n\n * Requires the _msgSender() to be the owner, approved, or operator\n\n * @param from current owner of the token\n\n * @param to address to receive the ownership of the given token ID\n\n * @param tokenId uint256 ID of the token to be transferred\n\n * @param _data bytes data to send along with a safe transfer check\n\n */\n\n function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public {\n\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: transfer caller is not owner nor approved\");\n\n _safeTransferFrom(from, to, tokenId, _data);\n\n }\n\n\n\n /**\n\n * @dev Safely transfers the ownership of a given token ID to another address\n\n * If the target address is a contract, it must implement `onERC721Received`,\n\n * which is called upon a safe transfer, and return the magic value\n\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n\n * the transfer is reverted.\n\n * Requires the msg.sender to be the owner, approved, or operator\n\n * @param from current owner of the token\n\n * @param to address to receive the ownership of the given token ID\n\n * @param tokenId uint256 ID of the token to be transferred\n\n * @param _data bytes data to send along with a safe transfer check\n\n */\n\n function _safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) internal {\n\n _transferFrom(from, to, tokenId);\n\n require(_checkOnERC721Received(from, to, tokenId, _data), \"ERC721: transfer to non ERC721Receiver implementer\");\n\n }\n\n\n\n /**\n\n * @dev Returns whether the specified token exists.\n\n * @param tokenId uint256 ID of the token to query the existence of\n\n * @return bool whether the token exists\n\n */\n\n function _exists(uint256 tokenId) internal view returns (bool) {\n\n address owner = _tokenOwner[tokenId];\n\n return owner != address(0);\n\n }\n\n\n\n /**\n\n * @dev Returns whether the given spender can transfer a given token ID.\n\n * @param spender address of the spender to query\n\n * @param tokenId uint256 ID of the token to be transferred\n\n * @return bool whether the msg.sender is approved for the given token ID,\n\n * is an operator of the owner, or is the owner of the token\n\n */\n\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) {\n\n require(_exists(tokenId), \"ERC721: operator query for nonexistent token\");\n\n address owner = ownerOf(tokenId);\n\n return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));\n\n }\n\n\n\n /**\n\n * @dev Internal function to safely mint a new token.\n\n * Reverts if the given token ID already exists.\n\n * If the target address is a contract, it must implement `onERC721Received`,\n\n * which is called upon a safe transfer, and return the magic value\n\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n\n * the transfer is reverted.\n\n * @param to The address that will own the minted token\n\n * @param tokenId uint256 ID of the token to be minted\n\n */\n\n function _safeMint(address to, uint256 tokenId) internal {\n\n _safeMint(to, tokenId, \"\");\n\n }\n\n\n\n /**\n\n * @dev Internal function to safely mint a new token.\n\n * Reverts if the given token ID already exists.\n\n * If the target address is a contract, it must implement `onERC721Received`,\n\n * which is called upon a safe transfer, and return the magic value\n\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n\n * the transfer is reverted.\n\n * @param to The address that will own the minted token\n\n * @param tokenId uint256 ID of the token to be minted\n\n * @param _data bytes data to send along with a safe transfer check\n\n */\n\n function _safeMint(address to, uint256 tokenId, bytes memory _data) internal {\n\n _mint(to, tokenId);\n\n require(_checkOnERC721Received(address(0), to, tokenId, _data), \"ERC721: transfer to non ERC721Receiver implementer\");\n\n }\n\n\n\n /**\n\n * @dev Internal function to mint a new token.\n\n * Reverts if the given token ID already exists.\n\n * @param to The address that will own the minted token\n\n * @param tokenId uint256 ID of the token to be minted\n\n */\n\n function _mint(address to, uint256 tokenId) internal {\n\n require(to != address(0), \"ERC721: mint to the zero address\");\n\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n\n\n _tokenOwner[tokenId] = to;\n\n _ownedTokensCount[to].increment();\n\n\n\n emit Transfer(address(0), to, tokenId);\n\n }\n\n\n\n /**\n\n * @dev Internal function to burn a specific token.\n\n * Reverts if the token does not exist.\n\n * Deprecated, use {_burn} instead.\n\n * @param owner owner of the token to burn\n\n * @param tokenId uint256 ID of the token being burned\n\n */\n\n function _burn(address owner, uint256 tokenId) internal {\n\n require(ownerOf(tokenId) == owner, \"ERC721: burn of token that is not own\");\n\n\n\n _clearApproval(tokenId);\n\n\n\n _ownedTokensCount[owner].decrement();\n\n _tokenOwner[tokenId] = address(0);\n\n\n\n emit Transfer(owner, address(0), tokenId);\n\n }\n\n\n\n /**\n\n * @dev Internal function to burn a specific token.\n\n * Reverts if the token does not exist.\n\n * @param tokenId uint256 ID of the token being burned\n\n */\n\n function _burn(uint256 tokenId) internal {\n\n _burn(ownerOf(tokenId), tokenId);\n\n }\n\n\n\n /**\n\n * @dev Internal function to transfer ownership of a given token ID to another address.\n\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n\n * @param from current owner of the token\n\n * @param to address to receive the ownership of the given token ID\n\n * @param tokenId uint256 ID of the token to be transferred\n\n */\n\n function _transferFrom(address from, address to, uint256 tokenId) internal {\n\n require(ownerOf(tokenId) == from, \"ERC721: transfer of token that is not own\");\n\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n\n\n _clearApproval(tokenId);\n\n\n\n _ownedTokensCount[from].decrement();\n\n _ownedTokensCount[to].increment();\n\n\n\n _tokenOwner[tokenId] = to;\n\n\n\n emit Transfer(from, to, tokenId);\n\n }\n\n\n\n /**\n\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n\n * The call is not executed if the target address is not a contract.\n\n *\n\n * This is an internal detail of the `ERC721` contract and its use is deprecated.\n\n * @param from address representing the previous owner of the given token ID\n\n * @param to target address that will receive the tokens\n\n * @param tokenId uint256 ID of the token to be transferred\n\n * @param _data bytes optional data to send along with the call\n\n * @return bool whether the call correctly returned the expected magic value\n\n */\n\n function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)\n\n internal returns (bool)\n\n {\n\n if (!to.isContract()) {\n\n return true;\n\n }\n\n // solhint-disable-next-line avoid-low-level-calls\n\n (bool success, bytes memory returndata) = to.call(abi.encodeWithSelector(\n\n IERC721Receiver(to).onERC721Received.selector,\n\n _msgSender(),\n\n from,\n\n tokenId,\n\n _data\n\n ));\n\n if (!success) {\n\n if (returndata.length > 0) {\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly {\n\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n\n }\n\n } else {\n\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n\n }\n\n } else {\n\n bytes4 retval = abi.decode(returndata, (bytes4));\n\n return (retval == _ERC721_RECEIVED);\n\n }\n\n }\n\n\n\n /**\n\n * @dev Private function to clear current approval of a given token ID.\n\n * @param tokenId uint256 ID of the token to be transferred\n\n */\n\n function _clearApproval(uint256 tokenId) private {\n\n if (_tokenApprovals[tokenId] != address(0)) {\n\n _tokenApprovals[tokenId] = address(0);\n\n }\n\n }\n\n}\n\ncontract ERC721Metadata is Context, ERC165, ERC721, IERC721Metadata {\n\n // Token name\n\n string private _name;\n\n\n\n // Token symbol\n\n string private _symbol;\n\n\n\n // Base URI\n\n string private _baseURI;\n\n\n\n // Optional mapping for token URIs\n\n mapping(uint256 => string) private _tokenURIs;\n\n\n\n /*\n\n * bytes4(keccak256('name()')) == 0x06fdde03\n\n * bytes4(keccak256('symbol()')) == 0x95d89b41\n\n * bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd\n\n *\n\n * => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f\n\n */\n\n bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;\n\n\n\n /**\n\n * @dev Constructor function\n\n */\n\n constructor (string memory name, string memory symbol) public {\n\n _name = name;\n\n _symbol = symbol;\n\n\n\n // register the supported interfaces to conform to ERC721 via ERC165\n\n _registerInterface(_INTERFACE_ID_ERC721_METADATA);\n\n }\n\n\n\n /**\n\n * @dev Gets the token name.\n\n * @return string representing the token name\n\n */\n\n function name() external view returns (string memory) {\n\n return _name;\n\n }\n\n\n\n /**\n\n * @dev Gets the token symbol.\n\n * @return string representing the token symbol\n\n */\n\n function symbol() external view returns (string memory) {\n\n return _symbol;\n\n }\n\n\n\n /**\n\n * @dev Returns the URI for a given token ID. May return an empty string.\n\n *\n\n * If the token's URI is non-empty and a base URI was set (via\n\n * {_setBaseURI}), it will be added to the token ID's URI as a prefix.\n\n *\n\n * Reverts if the token ID does not exist.\n\n */\n\n function tokenURI(uint256 tokenId) external view returns (string memory) {\n\n require(_exists(tokenId), \"ERC721Metadata: URI query for nonexistent token\");\n\n\n\n string memory _tokenURI = _tokenURIs[tokenId];\n\n\n\n // Even if there is a base URI, it is only appended to non-empty token-specific URIs\n\n if (bytes(_tokenURI).length == 0) {\n\n return \"\";\n\n } else {\n\n // abi.encodePacked is being used to concatenate strings\n\n return string(abi.encodePacked(_baseURI, _tokenURI));\n\n }\n\n }\n\n\n\n /**\n\n * @dev Internal function to set the token URI for a given token.\n\n *\n\n * Reverts if the token ID does not exist.\n\n *\n\n * TIP: if all token IDs share a prefix (e.g. if your URIs look like\n\n * `http://api.myproject.com/token/<id>`), use {_setBaseURI} to store\n\n * it and save gas.\n\n */\n\n function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal {\n\n require(_exists(tokenId), \"ERC721Metadata: URI set of nonexistent token\");\n\n _tokenURIs[tokenId] = _tokenURI;\n\n }\n\n\n\n /**\n\n * @dev Internal function to set the base URI for all token IDs. It is\n\n * automatically added as a prefix to the value returned in {tokenURI}.\n\n *\n\n * _Available since v2.5.0._\n\n */\n\n function _setBaseURI(string memory baseURI) internal {\n\n _baseURI = baseURI;\n\n }\n\n\n\n /**\n\n * @dev Returns the base URI set via {_setBaseURI}. This will be\n\n * automatically added as a preffix in {tokenURI} to each token's URI, when\n\n * they are non-empty.\n\n *\n\n * _Available since v2.5.0._\n\n */\n\n function baseURI() external view returns (string memory) {\n\n return _baseURI;\n\n }\n\n\n\n /**\n\n * @dev Internal function to burn a specific token.\n\n * Reverts if the token does not exist.\n\n * Deprecated, use _burn(uint256) instead.\n\n * @param owner owner of the token to burn\n\n * @param tokenId uint256 ID of the token being burned by the msg.sender\n\n */\n\n function _burn(address owner, uint256 tokenId) internal {\n\n super._burn(owner, tokenId);\n\n\n\n // Clear metadata (if any)\n\n if (bytes(_tokenURIs[tokenId]).length != 0) {\n\n delete _tokenURIs[tokenId];\n\n }\n\n }\n\n}\n\ncontract NFT is ERC721Metadata, Ownable {\n\n string internal _contractURI;\n\n\n\n constructor(string memory name, string memory symbol)\n\n public\n\n ERC721Metadata(name, symbol)\n\n {}\n\n\n\n function contractURI() external view returns (string memory) {\n\n return _contractURI;\n\n }\n\n\n\n function mint(address to, uint256 tokenId) external onlyOwner {\n\n _safeMint(to, tokenId);\n\n }\n\n\n\n function burn(uint256 tokenId) external onlyOwner {\n\n _burn(tokenId);\n\n }\n\n\n\n function setContractURI(string calldata newURI) external onlyOwner {\n\n _contractURI = newURI;\n\n }\n\n\n\n function setTokenURI(uint256 tokenId, string calldata newURI)\n\n external\n\n onlyOwner\n\n {\n\n _setTokenURI(tokenId, newURI);\n\n }\n\n\n\n function setBaseURI(string calldata newURI) external onlyOwner {\n\n _setBaseURI(newURI);\n\n }\n\n}\n\ncontract ATokenMock is ERC20, ERC20Detailed {\n\n using SafeMath for uint256;\n\n using DecMath for uint256;\n\n\n\n uint256 internal constant YEAR = 31556952; // Number of seconds in one Gregorian calendar year (365.2425 days)\n\n\n\n ERC20 public dai;\n\n uint256 public liquidityRate;\n\n uint256 public normalizedIncome;\n\n address[] public users;\n\n mapping(address => bool) public isUser;\n\n\n\n constructor(address _dai)\n\n public\n\n ERC20Detailed(\"aDAI\", \"aDAI\", 18)\n\n {\n\n dai = ERC20(_dai);\n\n\n\n liquidityRate = 10 ** 26; // 10% APY\n\n normalizedIncome = 10 ** 27;\n\n }\n\n\n\n function redeem(uint256 _amount) external {\n\n _burn(msg.sender, _amount);\n\n dai.transfer(msg.sender, _amount);\n\n }\n\n\n\n function mint(address _user, uint256 _amount) external {\n\n _mint(_user, _amount);\n\n if (!isUser[_user]) {\n\n users.push(_user);\n\n isUser[_user] = true;\n\n }\n\n }\n\n\n\n function mintInterest(uint256 _seconds) external {\n\n uint256 interest;\n\n address user;\n\n for (uint256 i = 0; i < users.length; i++) {\n\n user = users[i];\n\n interest = balanceOf(user).mul(_seconds).mul(liquidityRate).div(YEAR.mul(10**27));\n\n _mint(user, interest);\n\n }\n\n normalizedIncome = normalizedIncome.mul(_seconds).mul(liquidityRate).div(YEAR.mul(10**27)).add(normalizedIncome);\n\n }\n\n\n\n function setLiquidityRate(uint256 _liquidityRate) external {\n\n liquidityRate = _liquidityRate;\n\n }\n\n}\n\ncontract CERC20Mock is ERC20, ERC20Detailed {\n\n address public dai;\n\n\n\n uint256 internal _supplyRate;\n\n uint256 internal _exchangeRate;\n\n\n\n constructor(address _dai) public ERC20Detailed(\"cDAI\", \"cDAI\", 8) {\n\n dai = _dai;\n\n uint256 daiDecimals = ERC20Detailed(_dai).decimals();\n\n _exchangeRate = 2 * (10**(daiDecimals + 8)); // 1 cDAI = 0.02 DAI\n\n _supplyRate = 45290900000; // 10% supply rate per year\n\n }\n\n\n\n function mint(uint256 amount) external returns (uint256) {\n\n require(\n\n ERC20(dai).transferFrom(msg.sender, address(this), amount),\n\n \"Error during transferFrom\"\n\n ); // 1 DAI\n\n _mint(msg.sender, (amount * 10**18) / _exchangeRate);\n\n return 0;\n\n }\n\n\n\n function redeemUnderlying(uint256 amount) external returns (uint256) {\n\n _burn(msg.sender, (amount * 10**18) / _exchangeRate);\n\n require(\n\n ERC20(dai).transfer(msg.sender, amount),\n\n \"Error during transfer\"\n\n ); // 1 DAI\n\n return 0;\n\n }\n\n\n\n function exchangeRateStored() external view returns (uint256) {\n\n return _exchangeRate;\n\n }\n\n\n\n function exchangeRateCurrent() external view returns (uint256) {\n\n return _exchangeRate;\n\n }\n\n\n\n function _setExchangeRateStored(uint256 _rate) external returns (uint256) {\n\n _exchangeRate = _rate;\n\n }\n\n\n\n function supplyRatePerBlock() external view returns (uint256) {\n\n return _supplyRate;\n\n }\n\n\n\n function _setSupplyRatePerBlock(uint256 _rate) external {\n\n _supplyRate = _rate;\n\n }\n\n}\n\ncontract ERC20Mock is ERC20, ERC20Detailed(\"\", \"\", 6) {\n\n function mint(address to, uint256 amount) public {\n\n _mint(to, amount);\n\n }\n\n}\n\ncontract VaultMock is ERC20, ERC20Detailed {\n\n using SafeMath for uint256;\n\n using DecMath for uint256;\n\n\n\n ERC20 public underlying;\n\n\n\n constructor(address _underlying) public ERC20Detailed(\"yUSD\", \"yUSD\", 18) {\n\n underlying = ERC20(_underlying);\n\n }\n\n\n\n function deposit(uint256 tokenAmount) public {\n\n uint256 sharePrice = getPricePerFullShare();\n\n _mint(msg.sender, tokenAmount.decdiv(sharePrice));\n\n\n\n underlying.transferFrom(msg.sender, address(this), tokenAmount);\n\n }\n\n\n\n function withdraw(uint256 sharesAmount) public {\n\n uint256 sharePrice = getPricePerFullShare();\n\n uint256 underlyingAmount = sharesAmount.decmul(sharePrice);\n\n _burn(msg.sender, sharesAmount);\n\n\n\n underlying.transfer(msg.sender, underlyingAmount);\n\n }\n\n\n\n function getPricePerFullShare() public view returns (uint256) {\n\n uint256 _totalSupply = totalSupply();\n\n if (_totalSupply == 0) {\n\n return 10**18;\n\n }\n\n return underlying.balanceOf(address(this)).decdiv(_totalSupply);\n\n }\n\n}\n\ncontract EMAOracle is IInterestOracle {\n\n using SafeMath for uint256;\n\n using DecMath for uint256;\n\n\n\n uint256 internal constant PRECISION = 10**18;\n\n\n\n /**\n\n Immutable parameters\n\n */\n\n uint256 public UPDATE_INTERVAL;\n\n uint256 public UPDATE_MULTIPLIER;\n\n uint256 public ONE_MINUS_UPDATE_MULTIPLIER;\n\n\n\n /**\n\n Public variables\n\n */\n\n uint256 public emaStored;\n\n uint256 public lastIncomeIndex;\n\n uint256 public lastUpdateTimestamp;\n\n\n\n /**\n\n External contracts\n\n */\n\n IMoneyMarket public moneyMarket;\n\n\n\n constructor(\n\n uint256 _emaInitial,\n\n uint256 _updateInterval,\n\n uint256 _smoothingFactor,\n\n uint256 _averageWindowInIntervals,\n\n address _moneyMarket\n\n ) public {\n\n emaStored = _emaInitial;\n\n UPDATE_INTERVAL = _updateInterval;\n\n lastUpdateTimestamp = now;\n\n\n\n uint256 updateMultiplier = _smoothingFactor.div(_averageWindowInIntervals.add(1));\n\n UPDATE_MULTIPLIER = updateMultiplier;\n\n ONE_MINUS_UPDATE_MULTIPLIER = PRECISION.sub(updateMultiplier);\n\n\n\n moneyMarket = IMoneyMarket(_moneyMarket);\n\n lastIncomeIndex = moneyMarket.incomeIndex();\n\n }\n\n\n\n function updateAndQuery() public returns (bool updated, uint256 value) {\n\n uint256 timeElapsed = now - lastUpdateTimestamp;\n\n if (timeElapsed < UPDATE_INTERVAL) {\n\n return (false, emaStored);\n\n }\n\n\n\n // save gas by loading storage variables to memory\n\n uint256 _lastIncomeIndex = lastIncomeIndex;\n\n uint256 _emaStored = emaStored;\n\n\n\n uint256 newIncomeIndex = moneyMarket.incomeIndex();\n\n uint256 incomingValue = newIncomeIndex.sub(_lastIncomeIndex).decdiv(_lastIncomeIndex).div(timeElapsed);\n\n\n\n updated = true;\n\n value = incomingValue.mul(UPDATE_MULTIPLIER).add(_emaStored.mul(ONE_MINUS_UPDATE_MULTIPLIER)).div(PRECISION);\n\n emaStored = value;\n\n lastIncomeIndex = newIncomeIndex;\n\n lastUpdateTimestamp = now;\n\n }\n\n\n\n function query() public view returns (uint256 value) {\n\n return emaStored;\n\n }\n\n}\n\ncontract MPHToken is ERC20, ERC20Detailed, Ownable {\n\n constructor() public ERC20Detailed(\"88mph.app\", \"MPH\", 18) {}\n\n\n\n function ownerMint(address account, uint256 amount)\n\n public\n\n onlyOwner\n\n returns (bool)\n\n {\n\n _mint(account, amount);\n\n return true;\n\n }\n\n\n\n function ownerTransfer(\n\n address from,\n\n address to,\n\n uint256 amount\n\n ) public onlyOwner returns (bool) {\n\n _transfer(from, to, amount);\n\n return true;\n\n }\n\n}\n\ncontract Dumper is OneSplitDumper, CurveLPWithdrawer, YearnWithdrawer {\n\n constructor(\n\n address _oneSplit,\n\n address _rewards,\n\n address _rewardToken\n\n ) public OneSplitDumper(_oneSplit, _rewards, _rewardToken) 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0":{"kind":"number","value":594,"string":"594"},"address":{"kind":"string","value":"0xCFbFaC74C26F8647cBDb8c5caf80BB5b32E43134"},"source_code":{"kind":"string","value":"pragma solidity 0.7.4;\n\ninterface GnosisSafe {\n\n /// @dev Allows a Module to execute a Safe transaction without any further confirmations.\n\n /// @param to Destination address of module transaction.\n\n /// @param value Ether value of module transaction.\n\n /// @param data Data payload of module transaction.\n\n /// @param operation Operation type of module transaction.\n\n function execTransactionFromModule(address to, uint256 value, bytes calldata data, Enum.Operation operation)\n\n external\n\n returns (bool success);\n\n}\n\ncontract Enum {\n\n enum Operation {\n\n Call,\n\n DelegateCall\n\n }\n\n}\n\ncontract SignatureDecoder {\n\n \n\n /// @dev Recovers address who signed the message\n\n /// @param messageHash operation ethereum signed message hash\n\n /// @param messageSignature message `txHash` signature\n\n /// @param pos which signature to read\n\n function recoverKey (\n\n bytes32 messageHash,\n\n bytes memory messageSignature,\n\n uint256 pos\n\n )\n\n internal\n\n pure\n\n returns (address)\n\n {\n\n uint8 v;\n\n bytes32 r;\n\n bytes32 s;\n\n (v, r, s) = signatureSplit(messageSignature, pos);\n\n return ecrecover(messageHash, v, r, s);\n\n }\n\n\n\n /// @dev divides bytes signature into `uint8 v, bytes32 r, bytes32 s`.\n\n /// @notice Make sure to peform a bounds check for @param pos, to avoid out of bounds access on @param signatures\n\n /// @param pos which signature to read. A prior bounds check of this parameter should be performed, to avoid out of bounds access\n\n /// @param signatures concatenated rsv signatures\n\n function signatureSplit(bytes memory signatures, uint256 pos)\n\n internal\n\n pure\n\n returns (uint8 v, bytes32 r, bytes32 s)\n\n {\n\n // The signature format is a compact form of:\n\n // {bytes32 r}{bytes32 s}{uint8 v}\n\n // Compact means, uint8 is not padded to 32 bytes.\n\n // solium-disable-next-line security/no-inline-assembly\n\n assembly {\n\n let signaturePos := mul(0x41, pos)\n\n r := mload(add(signatures, add(signaturePos, 0x20)))\n\n s := mload(add(signatures, add(signaturePos, 0x40)))\n\n // Here we are loading the last 32 bytes, including 31 bytes\n\n // of 's'. There is no 'mload8' to do this.\n\n //\n\n // 'byte' is not working due to the Solidity parser, so lets\n\n // use the second best option, 'and'\n\n v := and(mload(add(signatures, add(signaturePos, 0x41))), 0xff)\n\n }\n\n }\n\n}\n\ncontract AllowanceModule is SignatureDecoder {\n\n\n\n string public constant NAME = \"Allowance Module\";\n\n string public constant VERSION = \"0.1.0\";\n\n\n\n bytes32 public constant DOMAIN_SEPARATOR_TYPEHASH = 0x47e79534a245952e8b16893a336b85a3d9ea9fa8c573f3d803afb92a79469218;\n\n // keccak256(\n\n // \"EIP712Domain(uint256 chainId,address verifyingContract)\"\n\n // );\n\n\n\n bytes32 public constant ALLOWANCE_TRANSFER_TYPEHASH = 0x80b006280932094e7cc965863eb5118dc07e5d272c6670c4a7c87299e04fceeb;\n\n // keccak256(\n\n // \"AllowanceTransfer(address safe,address token,uint96 amount,address paymentToken,uint96 payment,uint16 nonce)\"\n\n // );\n\n\n\n // Safe -> Delegate -> Allowance\n\n mapping(address => mapping (address => mapping(address => Allowance))) public allowances;\n\n // Safe -> Delegate -> Tokens\n\n mapping(address => mapping (address => address[])) public tokens;\n\n // Safe -> Delegates double linked list entry points\n\n mapping(address => uint48) public delegatesStart;\n\n // Safe -> Delegates double linked list\n\n mapping(address => mapping (uint48 => Delegate)) public delegates;\n\n\n\n // We use a double linked list for the delegates. The id is the first 6 bytes. \n\n // To double check the address in case of collision, the address is part of the struct.\n\n struct Delegate {\n\n address delegate;\n\n uint48 prev;\n\n uint48 next;\n\n }\n\n\n\n // The allowance info is optimized to fit into one word of storage.\n\n struct Allowance {\n\n uint96 amount;\n\n uint96 spent;\n\n uint16 resetTimeMin; // Maximum reset time span is 65k minutes\n\n uint32 lastResetMin;\n\n uint16 nonce;\n\n }\n\n\n\n event AddDelegate(address indexed safe, address delegate);\n\n event RemoveDelegate(address indexed safe, address delegate);\n\n event ExecuteAllowanceTransfer(address indexed safe, address delegate, address token, address to, uint96 value, uint16 nonce);\n\n event PayAllowanceTransfer(address indexed safe, address delegate, address paymentToken, address paymentReceiver, uint96 payment);\n\n event SetAllowance(address indexed safe, address delegate, address token, uint96 allowanceAmount, uint16 resetTime);\n\n event ResetAllowance(address indexed safe, address delegate, address token);\n\n event DeleteAllowance(address indexed safe, address delegate, address token);\n\n\n\n /// @dev Allows to update the allowance for a specified token. This can only be done via a Safe transaction.\n\n /// @param delegate Delegate whose allowance should be updated.\n\n /// @param token Token contract address.\n\n /// @param allowanceAmount allowance in smallest token unit.\n\n /// @param resetTimeMin Time after which the allowance should reset\n\n /// @param resetBaseMin Time based on which the reset time should be increased\n\n function setAllowance(address delegate, address token, uint96 allowanceAmount, uint16 resetTimeMin, uint32 resetBaseMin)\n\n public\n\n {\n\n require(delegate != address(0), \"delegate != address(0)\");\n\n require(delegates[msg.sender][uint48(delegate)].delegate == delegate, \"delegates[msg.sender][uint48(delegate)].delegate == delegate\");\n\n Allowance memory allowance = getAllowance(msg.sender, delegate, token);\n\n if (allowance.nonce == 0) { // New token\n\n // Nonce should never be 0 once allowance has been activated\n\n allowance.nonce = 1;\n\n tokens[msg.sender][delegate].push(token);\n\n }\n\n // Divide by 60 to get current time in minutes\n\n // solium-disable-next-line security/no-block-members\n\n uint32 currentMin = uint32(block.timestamp / 60);\n\n if (resetBaseMin > 0) {\n\n require(resetBaseMin <= currentMin, \"resetBaseMin <= currentMin\");\n\n allowance.lastResetMin = currentMin - ((currentMin - resetBaseMin) % resetTimeMin);\n\n } else if (allowance.lastResetMin == 0) {\n\n allowance.lastResetMin = currentMin;\n\n }\n\n allowance.resetTimeMin = resetTimeMin;\n\n allowance.amount = allowanceAmount;\n\n updateAllowance(msg.sender, delegate, token, allowance);\n\n emit SetAllowance(msg.sender, delegate, token, allowanceAmount, resetTimeMin);\n\n }\n\n\n\n function getAllowance(address safe, address delegate, address token) private view returns (Allowance memory allowance) {\n\n allowance = allowances[safe][delegate][token];\n\n // solium-disable-next-line security/no-block-members\n\n uint32 currentMin = uint32(block.timestamp / 60);\n\n // Check if we should reset the time. We do this on load to minimize storage read/ writes\n\n if (allowance.resetTimeMin > 0 && allowance.lastResetMin <= currentMin - allowance.resetTimeMin) {\n\n allowance.spent = 0;\n\n // Resets happen in regular intervals and `lastResetMin` should be aligned to that\n\n allowance.lastResetMin = currentMin - ((currentMin - allowance.lastResetMin) % allowance.resetTimeMin);\n\n }\n\n return allowance;\n\n }\n\n\n\n function updateAllowance(address safe, address delegate, address token, Allowance memory allowance) private {\n\n allowances[safe][delegate][token] = allowance;\n\n }\n\n\n\n /// @dev Allows to reset the allowance for a specific delegate and token.\n\n /// @param delegate Delegate whose allowance should be updated.\n\n /// @param token Token contract address.\n\n function resetAllowance(address delegate, address token) public {\n\n Allowance memory allowance = getAllowance(msg.sender, delegate, token);\n\n allowance.spent = 0;\n\n updateAllowance(msg.sender, delegate, token, allowance);\n\n emit ResetAllowance(msg.sender, delegate, token);\n\n }\n\n\n\n /// @dev Allows to remove the allowance for a specific delegate and token. This will set all values except the `nonce` to 0.\n\n /// @param delegate Delegate whose allowance should be updated.\n\n /// @param token Token contract address.\n\n function deleteAllowance(address delegate, address token)\n\n public\n\n {\n\n Allowance memory allowance = getAllowance(msg.sender, delegate, token);\n\n allowance.amount = 0;\n\n allowance.spent = 0;\n\n allowance.resetTimeMin = 0;\n\n allowance.lastResetMin = 0;\n\n updateAllowance(msg.sender, delegate, token, allowance);\n\n emit DeleteAllowance(msg.sender, delegate, token);\n\n }\n\n\n\n /// @dev Allows to use the allowance to perform a transfer.\n\n /// @param safe The Safe whose funds should be used.\n\n /// @param token Token contract address.\n\n /// @param to Address that should receive the tokens.\n\n /// @param amount Amount that should be transferred.\n\n /// @param paymentToken Token that should be used to pay for the execution of the transfer.\n\n /// @param payment Amount to should be paid for executing the transfer.\n\n /// @param delegate Delegate whose allowance should be updated.\n\n /// @param signature Signature generated by the delegate to authorize the transfer.\n\n function executeAllowanceTransfer(\n\n GnosisSafe safe,\n\n address token,\n\n address payable to,\n\n uint96 amount,\n\n address paymentToken,\n\n uint96 payment,\n\n address delegate,\n\n bytes memory signature\n\n ) public {\n\n // Get current state\n\n Allowance memory allowance = getAllowance(address(safe), delegate, token);\n\n bytes memory transferHashData = generateTransferHashData(address(safe), token, to, amount, paymentToken, payment, allowance.nonce);\n\n\n\n // Update state\n\n allowance.nonce = allowance.nonce + 1;\n\n uint96 newSpent = allowance.spent + amount;\n\n // Check new spent amount and overflow\n\n require(newSpent > allowance.spent && newSpent <= allowance.amount, \"newSpent > allowance.spent && newSpent <= allowance.amount\");\n\n allowance.spent = newSpent;\n\n if (payment > 0) {\n\n // Use updated allowance if token and paymentToken are the same\n\n Allowance memory paymentAllowance = paymentToken == token ? allowance : getAllowance(address(safe), delegate, paymentToken);\n\n newSpent = paymentAllowance.spent + payment;\n\n // Check new spent amount and overflow\n\n require(newSpent > paymentAllowance.spent && newSpent <= paymentAllowance.amount, \"newSpent > paymentAllowance.spent && newSpent <= paymentAllowance.amount\");\n\n paymentAllowance.spent = newSpent;\n\n // Update payment allowance if different from allowance\n\n if (paymentToken != token) updateAllowance(address(safe), delegate, paymentToken, paymentAllowance);\n\n }\n\n updateAllowance(address(safe), delegate, token, allowance);\n\n\n\n // Perform external interactions\n\n // Check signature\n\n checkSignature(delegate, signature, transferHashData, safe);\n\n\n\n if (payment > 0) {\n\n // Transfer payment\n\n // solium-disable-next-line security/no-tx-origin\n\n transfer(safe, paymentToken, tx.origin, payment);\n\n // solium-disable-next-line security/no-tx-origin\n\n emit PayAllowanceTransfer(address(safe), delegate, paymentToken, tx.origin, payment);\n\n }\n\n // Transfer token\n\n transfer(safe, token, to, amount);\n\n emit ExecuteAllowanceTransfer(address(safe), delegate, token, to, amount, allowance.nonce - 1);\n\n }\n\n\n\n /// @dev Returns the chain id used by this contract.\n\n function getChainId() public pure returns (uint256) {\n\n uint256 id;\n\n // solium-disable-next-line security/no-inline-assembly\n\n assembly {\n\n id := chainid()\n\n }\n\n return id;\n\n }\n\n\n\n /// @dev Generates the data for the transfer hash (required for signing)\n\n function generateTransferHashData(\n\n address safe,\n\n address token,\n\n address to,\n\n uint96 amount,\n\n address paymentToken,\n\n uint96 payment,\n\n uint16 nonce\n\n ) private view returns (bytes memory) {\n\n uint256 chainId = getChainId();\n\n bytes32 domainSeparator = keccak256(abi.encode(DOMAIN_SEPARATOR_TYPEHASH, chainId, this));\n\n bytes32 transferHash = keccak256(\n\n abi.encode(ALLOWANCE_TRANSFER_TYPEHASH, safe, token, to, amount, paymentToken, payment, nonce)\n\n );\n\n return abi.encodePacked(byte(0x19), byte(0x01), domainSeparator, transferHash);\n\n }\n\n\n\n /// @dev Generates the transfer hash that should be signed to authorize a transfer\n\n function generateTransferHash(\n\n address safe,\n\n address token,\n\n address to,\n\n uint96 amount,\n\n address paymentToken,\n\n uint96 payment,\n\n uint16 nonce\n\n ) public view returns (bytes32) {\n\n return keccak256(generateTransferHashData(\n\n safe, token, to, amount, paymentToken, payment, nonce\n\n ));\n\n }\n\n\n\n function checkSignature(address expectedDelegate, bytes memory signature, bytes memory transferHashData, GnosisSafe safe) private view {\n\n address signer = recoverSignature(signature, transferHashData);\n\n require(\n\n expectedDelegate == signer && delegates[address(safe)][uint48(signer)].delegate == signer,\n\n \"expectedDelegate == signer && delegates[address(safe)][uint48(signer)].delegate == signer\"\n\n );\n\n }\n\n\n\n // We use the same format as used for the Safe contract, except that we only support exactly 1 signature and no contract signatures.\n\n function recoverSignature(bytes memory signature, bytes memory transferHashData) private view returns (address owner) {\n\n // If there is no signature data msg.sender should be used\n\n if (signature.length == 0) return msg.sender;\n\n // Check that the provided signature data is as long as 1 encoded ecsda signature\n\n require(signature.length == 65, \"signatures.length == 65\");\n\n uint8 v;\n\n bytes32 r;\n\n bytes32 s;\n\n (v, r, s) = signatureSplit(signature, 0);\n\n // If v is 0 then it is a contract signature\n\n if (v == 0) {\n\n revert(\"Contract signatures are not supported by this module\");\n\n } else if (v == 1) {\n\n // If v is 1 we also use msg.sender, this is so that we are compatible to the GnosisSafe signature scheme\n\n owner = msg.sender;\n\n } else if (v > 30) {\n\n // To support eth_sign and similar we adjust v and hash the transferHashData with the Ethereum message prefix before applying ecrecover\n\n owner = ecrecover(keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n32\", keccak256(transferHashData))), v - 4, r, s);\n\n } else {\n\n // Use ecrecover with the messageHash for EOA signatures\n\n owner = ecrecover(keccak256(transferHashData), v, r, s);\n\n }\n\n // 0 for the recovered owner indicates that an error happened.\n\n require(owner != address(0), \"owner != address(0)\");\n\n }\n\n\n\n function transfer(GnosisSafe safe, address token, address payable to, uint96 amount) private {\n\n if (token == address(0)) {\n\n // solium-disable-next-line security/no-send\n\n require(safe.execTransactionFromModule(to, amount, \"\", Enum.Operation.Call), \"Could not execute ether transfer\");\n\n } else {\n\n bytes memory data = abi.encodeWithSignature(\"transfer(address,uint256)\", to, amount);\n\n require(safe.execTransactionFromModule(token, 0, data, Enum.Operation.Call), \"Could not execute token transfer\");\n\n }\n\n }\n\n\n\n function getTokens(address safe, address delegate) public view returns (address[] memory) {\n\n return tokens[safe][delegate];\n\n }\n\n\n\n function getTokenAllowance(address safe, address delegate, address token) public view returns (uint256[5] memory) {\n\n Allowance memory allowance = getAllowance(safe, delegate, token);\n\n return [\n\n uint256(allowance.amount),\n\n uint256(allowance.spent),\n\n uint256(allowance.resetTimeMin),\n\n uint256(allowance.lastResetMin),\n\n uint256(allowance.nonce)\n\n ];\n\n }\n\n\n\n /// @dev Allows to add a delegate.\n\n /// @param delegate Delegate that should be added.\n\n function addDelegate(address delegate) public {\n\n uint48 index = uint48(delegate);\n\n require(index != uint(0), \"index != uint(0)\");\n\n address currentDelegate = delegates[msg.sender][index].delegate;\n\n if(currentDelegate != address(0)) {\n\n // We have a collision for the indices of delegates\n\n require(currentDelegate == delegate, \"currentDelegate == delegate\");\n\n // Delegate already exists, nothing to do\n\n return;\n\n }\n\n uint48 startIndex = delegatesStart[msg.sender];\n\n delegates[msg.sender][index] = Delegate(delegate, 0, startIndex);\n\n delegates[msg.sender][startIndex].prev = index;\n\n delegatesStart[msg.sender] = index;\n\n emit AddDelegate(msg.sender, delegate);\n\n }\n\n\n\n /// @dev Allows to remove a delegate.\n\n /// @param delegate Delegate that should be removed.\n\n /// @param removeAllowances Indicator if allowances should also be removed. This should be set to `true` unless this causes an out of gas, in this case the allowances should be \"manually\" deleted via `deleteAllowance`.\n\n function removeDelegate(address delegate, bool removeAllowances) public {\n\n Delegate memory current = delegates[msg.sender][uint48(delegate)];\n\n // Delegate doesn't exists, nothing to do\n\n if(current.delegate == address(0)) return;\n\n if (removeAllowances) {\n\n address[] storage delegateTokens = tokens[msg.sender][delegate];\n\n for (uint256 i = 0; i < delegateTokens.length; i++) {\n\n address token = delegateTokens[i];\n\n // Set all allowance params except the nonce to 0\n\n Allowance memory allowance = getAllowance(msg.sender, delegate, token);\n\n allowance.amount = 0;\n\n allowance.spent = 0;\n\n allowance.resetTimeMin = 0;\n\n allowance.lastResetMin = 0;\n\n updateAllowance(msg.sender, delegate, token, allowance);\n\n emit DeleteAllowance(msg.sender, delegate, token);\n\n }\n\n }\n\n if (current.prev == 0) {\n\n delegatesStart[msg.sender] = current.next;\n\n } else {\n\n delegates[msg.sender][current.prev].next = current.next;\n\n }\n\n if (current.next != 0) {\n\n delegates[msg.sender][current.next].prev = current.prev;\n\n }\n\n delete delegates[msg.sender][uint48(delegate)];\n\n emit RemoveDelegate(msg.sender, delegate);\n\n }\n\n\n\n function getDelegates(address safe, uint48 start, uint8 pageSize) public view returns (address[] memory results, uint48 next) {\n\n results = new address[](pageSize);\n\n uint8 i = 0;\n\n uint48 initialIndex = (start != 0) ? start : delegatesStart[safe];\n\n Delegate memory current = delegates[safe][initialIndex];\n\n while(current.delegate != address(0) && i < pageSize) {\n\n results[i] = current.delegate;\n\n i++;\n\n current = delegates[safe][current.next];\n\n }\n\n next = uint48(current.delegate);\n\n // Set the length of the array the number that has been used.\n\n // solium-disable-next-line security/no-inline-assembly\n\n assembly {\n\n mstore(results, i)\n\n }\n\n 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0":{"kind":"number","value":595,"string":"595"},"address":{"kind":"string","value":"0xd03a329e6a1f05d0c797215a82e8f0e14f241d4b"},"source_code":{"kind":"string","value":"pragma solidity 0.6.12;\n\nenum escrowstatus {CANCELLED, ACTIVATED, SETTLED}\n\ninterface DaiErc20 {\n\n function transfer(address, uint) external returns (bool);\n\n function transferFrom(address,address,uint256) external returns (bool);\n\n function approve(address,uint256) external returns (bool);\n\n function balanceOf(address) external view returns (uint);\n\n function allowance(address, address) external view returns (uint);\n\n}\n\nlibrary mathlib\n\n{\n\n \n\n // --- Math functions as implemented in DAI ERC20 Token---\n\n function add(uint x, uint y) internal pure returns (uint z) {\n\n require((z = x + y) >= x);\n\n }\n\n \n\n function sub(uint x, uint y) internal pure returns (uint z) {\n\n require((z = x - y) <= x);\n\n }\n\n \n\n function mul(uint x, uint y) internal pure returns (uint z) {\n\n require(y == 0 || (z = x * y) / y == x);\n\n }\n\n \n\n}\n\ncontract owned\n\n{\n\n /*\n\n \t1) Allows the manager to pause the main Factory contract, set a new manager or change the Escrow fee\n\n \t2) Only the Factory contract is owned, not the escrows that are created.\n\n\t \t3) The manager has no control over the outcome of the escrows that are created.\n\n */\n\n\n\n address public manager;\n\n \n\n constructor() public \n\n\t{\n\n\t manager = msg.sender;\n\n\t}\n\n\n\n modifier onlyManager()\n\n {\n\n require(msg.sender == manager);\n\n _;\n\n }\n\n \n\n function setManager(address newmanager) external onlyManager\n\n {\n\n /*\n\n Allows the current manager to set a new manager\n\n */\n\n \n\n require(newmanager.balance > 0);\n\n manager = newmanager;\n\n }\n\n \n\n}\n\ncontract EscrowFactory is owned\n\n{\n\n /*\n\n 1) The Escrow Factory contract to create and manage Escrows\n\n\t 2) Only the Escrow Factory is owned by the manager\n\n\t 3) The manager has no control over each Escrow or the cumulative payment locked in the Factory contract\n\n */\n\n \n\n address constant private dai_ = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n DaiErc20 constant private daiToken = DaiErc20(dai_);\n\n\n\n //Escrow Fee in wad payed to the manager to create a Escrow\n\n uint public escrowfee;\n\n \n\n //Switch that controls whether the factory is active\n\n bool public factorycontractactive;\n\n \n\n uint private escrowid;\n\n \n\n uint constant private maxuint = 2**256-1;\n\n \n\n struct Escrow \n\n {\n\n address escrowpayer;\n\n address escrowpayee;\n\n uint escrowamount;\n\n uint escrowsettlementamount;\n\n escrowstatus estatus;\n\n address escrowmoderator;\n\n uint escrowmoderatorfee;\n\n }\n\n \n\n mapping (bytes32 => Escrow) public Escrows;\n\n \n\n \n\n /** Events **/\n\n\n\n //Event for new Escrow Contract\n\n event NewEscrowEvent(bytes32 esid, address indexed escrowpayer, address indexed escrowpayee, uint escrowamount, uint eventtime);\n\n \n\n //Event overload with moderator\n\n event NewEscrowEvent(bytes32 esid, address indexed escrowpayer, address indexed escrowpayee, uint escrowamount, address indexed escrowmoderator, \n\n uint escrowmoderatorfee, uint eventtime);\n\n \n\n //The Escrowid is indexed\n\n event NewEscrowEventById(bytes32 indexed esid, address escrowpayer, address escrowpayee, uint escrowamount, uint eventtime);\n\n \n\n //The Escrowid is indexed overload for moderator\n\n event NewEscrowEventById(bytes32 indexed esid, address escrowpayer, address escrowpayee, uint escrowamount, address escrowmoderator, \n\n uint escrowmoderatorfee, uint eventtime);\n\n \n\n //Escrow Status Change Event\n\n event EscrowStatusEvent(bytes32 indexed esid, escrowstatus estatus, uint escrowsettlementamount, uint eventtime);\n\n \n\n constructor() public \n\n\t{\n\n\t\tescrowid = 0;\n\n\t escrowfee = 1000000000000000000; //1 DAI\n\n\t\tfactorycontractactive = true;\n\n\t}\n\n\n\n\n\n function setEscrowFee(uint newfee) external onlyManager\n\n {\n\n /*\n\n \t1) Changes the Escrow fee that is paid to the manager\n\n \t2) The Escrow fee at launch of contract is set to 1 DAI\n\n\t 3) The escrowfee is a public variable and can always queried\t\n\n */\n\n \n\n require(newfee > 0);\n\n \n\n escrowfee = newfee;\n\n }\n\n \n\n\n\n function setFactoryContractSwitch() external onlyManager\n\n {\n\n /*\n\n \t1) Switch that controls whether the contract is active\n\n\t 2) If the contract is paused new Escrows can not be created, but existing Escrows can still be Settled.\n\n */\n\n \n\n factorycontractactive = factorycontractactive == true ? false : true;\n\n }\n\n \n\n \n\n //create new escrow\n\n function createNewEscrow(address escrowpayee, uint escrowamount) external \n\n {\n\n \n\n require(factorycontractactive, \"Factory Contract should be Active\");\n\n require(escrowid < maxuint, \"Maximum escrowid reached\");\n\n require(msg.sender != escrowpayee,\"The Payer, payee should be different\");\n\n require(escrowpayee != address(0),\"The Escrow Payee can not be address(0)\");\n\n require(escrowamount > 0,\"Escrow amount has to be greater than 0\");\n\n \n\n require(daiToken.allowance(msg.sender,address(this)) >= mathlib.add(escrowamount, escrowfee), \"daiToken allowance exceeded\");\n\n \n\n bytes32 esid = keccak256(abi.encodePacked(escrowid));\n\n \n\n Escrows[esid] = Escrow({escrowpayer:msg.sender, escrowpayee:escrowpayee, escrowamount:escrowamount,\n\n escrowsettlementamount:escrowamount, estatus:escrowstatus.ACTIVATED,escrowmoderator:address(0),escrowmoderatorfee:0});\n\n \n\n escrowid = mathlib.add(escrowid,1);\n\n \n\n //The Esrow Amount gets transferred to factory contract\n\n daiToken.transferFrom(msg.sender, address(this), escrowamount);\n\n \n\n //Transfer the escrow fee to factory manager\n\n daiToken.transferFrom(msg.sender, manager, escrowfee);\n\n \n\n emit NewEscrowEvent(esid, msg.sender, escrowpayee, escrowamount, now);\n\n \n\n emit NewEscrowEventById(esid, msg.sender, escrowpayee, escrowamount, now);\n\n \n\n }\n\n \n\n //create new escrow overload\n\n function createNewEscrow(address escrowpayee, uint escrowamount, address escrowmoderator, uint escrowmoderatorfee) external \n\n {\n\n \n\n require(factorycontractactive, \"Factory Contract should be Active\");\n\n require(escrowid < maxuint, \"Maximum escrowid reached\");\n\n require(msg.sender != escrowpayee && msg.sender != escrowmoderator && escrowpayee != escrowmoderator,\"The Payer, payee & moderator should be different\");\n\n require(escrowpayee != address(0) && escrowmoderator!=address(0),\"Escrow Payee or moderator can not be address(0)\");\n\n require(escrowamount > 0,\"Escrow amount has to be greater than 0\");\n\n \n\n uint dailockedinnewescrow = mathlib.add(escrowamount,escrowmoderatorfee);\n\n \n\n require(daiToken.allowance(msg.sender,address(this)) >= mathlib.add(dailockedinnewescrow, escrowfee), \"daiToken allowance exceeded\");\n\n \n\n bytes32 esid = keccak256(abi.encodePacked(escrowid));\n\n \n\n Escrows[esid] = Escrows[esid] = Escrow({escrowpayer:msg.sender, escrowpayee:escrowpayee, escrowamount:escrowamount,\n\n escrowsettlementamount:escrowamount, estatus:escrowstatus.ACTIVATED,escrowmoderator:escrowmoderator,escrowmoderatorfee:escrowmoderatorfee});\n\n \n\n escrowid = mathlib.add(escrowid,1);\n\n \n\n //The Esrow Amount and Moderator fee gets transferred to factory contract\n\n daiToken.transferFrom(msg.sender, address(this), dailockedinnewescrow);\n\n \n\n //Transfer the escrow fee to factory manager\n\n daiToken.transferFrom(msg.sender, manager, escrowfee);\n\n \n\n emit NewEscrowEvent(esid, msg.sender, escrowpayee, escrowamount, escrowmoderator, escrowmoderatorfee ,now);\n\n \n\n emit NewEscrowEventById(esid, msg.sender, escrowpayee, escrowamount, escrowmoderator, escrowmoderatorfee, now);\n\n \n\n }\n\n \n\n modifier onlyPayerOrModerator(bytes32 esid)\n\n {\n\n require(msg.sender == Escrows[esid].escrowpayer || msg.sender == Escrows[esid].escrowmoderator, \"Only Payer or Moderator\");\n\n _;\n\n }\n\n \n\n modifier onlyPayeeOrModerator(bytes32 esid)\n\n {\n\n require(msg.sender == Escrows[esid].escrowpayee || msg.sender == Escrows[esid].escrowmoderator, \"Only Payee or Moderator\");\n\n _;\n\n }\n\n \n\n function getEscrowDetails(bytes32 esid) external view returns (escrowstatus, uint)\n\n {\n\n /*\n\n Gets the changing variables of a escrow based on escrowid\n\n */\n\n \n\n Escrow memory thisescrow = Escrows[esid];\n\n \n\n require(thisescrow.escrowpayee !=address(0),\"Escrow does not exist\");\n\n \n\n return(thisescrow.estatus, thisescrow.escrowsettlementamount);\n\n }\n\n \n\n \n\n function setEscrowSettlementAmount(bytes32 esid, uint esettlementamount) external onlyPayeeOrModerator(esid)\n\n {\n\n /*\n\n Only the escrow Payee or Moderator can change the escrow settlement amount to less than or equal to the original escrowamount\n\n */\n\n \n\n Escrow storage thisescrow = Escrows[esid];\n\n \n\n require(thisescrow.estatus == escrowstatus.ACTIVATED,\"Escrow should be Activated\");\n\n require(esettlementamount > 0 && esettlementamount <= thisescrow.escrowamount ,\"escrow settlementamount is incorrect\");\n\n \n\n thisescrow.escrowsettlementamount = esettlementamount;\n\n \n\n emit EscrowStatusEvent(esid, thisescrow.estatus, thisescrow.escrowsettlementamount,now);\n\n }\n\n \n\n function releaseFundsToPayee(bytes32 esid) external onlyPayerOrModerator(esid)\n\n {\n\n /*\n\n 1) The payee gets paid the escrow settlement amount\n\n 2) The moderator gets paid the moderation fee if exists\n\n 3) Any remaining amount is transferred to the Payer\n\n */\n\n \n\n Escrow storage thisescrow = Escrows[esid];\n\n \n\n require(thisescrow.estatus == escrowstatus.ACTIVATED, \"Escrow Should be activated\");\n\n \n\n require(thisescrow.escrowsettlementamount > 0, \"Escrow Settlement amount is 0\");\n\n \n\n uint payeramt = thisescrow.escrowamount > thisescrow.escrowsettlementamount ? mathlib.sub(thisescrow.escrowamount,thisescrow.escrowsettlementamount) : 0;\n\n \n\n uint settlementamount = thisescrow.escrowsettlementamount;\n\n thisescrow.escrowsettlementamount = 0;\n\n thisescrow.estatus = escrowstatus.SETTLED;\n\n \n\n //Payee gets paid\n\n daiToken.transfer(thisescrow.escrowpayee,settlementamount);\n\n \n\n //Moderator gets paid if exists\n\n if (thisescrow.escrowmoderatorfee > 0)\n\n {\n\n daiToken.transfer(thisescrow.escrowmoderator,thisescrow.escrowmoderatorfee);\n\n }\n\n \n\n //Payer gets paid any remaining balance\n\n if (payeramt > 0)\n\n {\n\n daiToken.transfer(thisescrow.escrowpayer,payeramt);\n\n }\n\n \n\n emit EscrowStatusEvent(esid, thisescrow.estatus, thisescrow.escrowsettlementamount,now);\n\n \n\n }\n\n \n\n function cancelEscrow(bytes32 esid) external onlyPayeeOrModerator(esid)\n\n {\n\n /*\n\n 1) The payer gets refunded the full escrow amount\n\n 2) The moderator gets paid the moderation fee if exists\n\n */\n\n \n\n Escrow storage thisescrow = Escrows[esid];\n\n \n\n require(thisescrow.estatus == escrowstatus.ACTIVATED, \"Escrow Should be activated\");\n\n \n\n require(thisescrow.escrowamount == thisescrow.escrowsettlementamount,\"Escrow amount and Escrow settlement amount should be equal\");\n\n \n\n uint settlementamount = thisescrow.escrowsettlementamount;\n\n thisescrow.escrowsettlementamount = 0;\n\n thisescrow.estatus = escrowstatus.CANCELLED;\n\n \n\n //Moderator gets paid if exists\n\n if (thisescrow.escrowmoderatorfee > 0)\n\n {\n\n daiToken.transfer(thisescrow.escrowmoderator,thisescrow.escrowmoderatorfee);\n\n }\n\n \n\n //Payer gets full refund\n\n daiToken.transfer(thisescrow.escrowpayer,settlementamount);\n\n \n\n emit EscrowStatusEvent(esid, thisescrow.estatus, thisescrow.escrowsettlementamount,now);\n\n }\n\n 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0":{"kind":"number","value":596,"string":"596"},"address":{"kind":"string","value":"0xd042D4E9B4186c545648c7FfFe87125c976D110B"},"source_code":{"kind":"string","value":"pragma solidity 0.6.6;\npragma experimental ABIEncoderV2;\n\ncontract DSAuthEvents {\n\n event LogSetAuthority(address indexed authority);\n\n event LogSetOwner(address indexed owner);\n\n}\n\ncontract DSAuth is DSAuthEvents {\n\n DSAuthority public authority;\n\n address public owner;\n\n\n\n constructor() public {\n\n owner = msg.sender;\n\n emit LogSetOwner(msg.sender);\n\n }\n\n\n\n function setOwner(address owner_) public auth {\n\n owner = owner_;\n\n emit LogSetOwner(owner);\n\n }\n\n\n\n function setAuthority(DSAuthority authority_) public auth {\n\n authority = authority_;\n\n emit LogSetAuthority(address(authority));\n\n }\n\n\n\n modifier auth {\n\n require(isAuthorized(msg.sender, msg.sig));\n\n _;\n\n }\n\n\n\n function isAuthorized(address src, bytes4 sig) internal view returns (bool) {\n\n if (src == address(this)) {\n\n return true;\n\n } else if (src == owner) {\n\n return true;\n\n } else if (authority == DSAuthority(0)) {\n\n return false;\n\n } else {\n\n return authority.canCall(src, address(this), sig);\n\n }\n\n }\n\n}\n\nabstract contract DSAuthority {\n\n function canCall(address src, address dst, bytes4 sig) public virtual view returns (bool);\n\n}\n\nabstract contract DSGuard {\n\n function canCall(address src_, address dst_, bytes4 sig) public view virtual returns (bool);\n\n\n\n function permit(bytes32 src, bytes32 dst, bytes32 sig) public virtual;\n\n\n\n function forbid(bytes32 src, bytes32 dst, bytes32 sig) public virtual;\n\n\n\n function permit(address src, address dst, bytes32 sig) public virtual;\n\n\n\n function forbid(address src, address dst, bytes32 sig) public virtual;\n\n}\n\nabstract contract DSGuardFactory {\n\n function newGuard() public virtual returns (DSGuard guard);\n\n}\n\ncontract DSMath {\n\n function add(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require((z = x + y) >= x);\n\n }\n\n\n\n function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require((z = x - y) <= x);\n\n }\n\n\n\n function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require(y == 0 || (z = x * y) / y == x);\n\n }\n\n\n\n function div(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n return x / y;\n\n }\n\n\n\n function min(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n return x <= y ? x : y;\n\n }\n\n\n\n function max(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n return x >= y ? x : y;\n\n }\n\n\n\n function imin(int256 x, int256 y) internal pure returns (int256 z) {\n\n return x <= y ? x : y;\n\n }\n\n\n\n function imax(int256 x, int256 y) internal pure returns (int256 z) {\n\n return x >= y ? x : y;\n\n }\n\n\n\n uint256 constant WAD = 10**18;\n\n uint256 constant RAY = 10**27;\n\n\n\n function wmul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n z = add(mul(x, y), WAD / 2) / WAD;\n\n }\n\n\n\n function rmul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n z = add(mul(x, y), RAY / 2) / RAY;\n\n }\n\n\n\n function wdiv(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n z = add(mul(x, WAD), y / 2) / y;\n\n }\n\n\n\n function rdiv(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n z = add(mul(x, RAY), y / 2) / y;\n\n }\n\n\n\n // This famous algorithm is called \"exponentiation by squaring\"\n\n // and calculates x^n with x as fixed-point and n as regular unsigned.\n\n //\n\n // It's O(log n), instead of O(n) for naive repeated multiplication.\n\n //\n\n // These facts are why it works:\n\n //\n\n // If n is even, then x^n = (x^2)^(n/2).\n\n // If n is odd, then x^n = x * x^(n-1),\n\n // and applying the equation for even x gives\n\n // x^n = x * (x^2)^((n-1) / 2).\n\n //\n\n // Also, EVM division is flooring and\n\n // floor[(n-1) / 2] = floor[n / 2].\n\n //\n\n function rpow(uint256 x, uint256 n) internal pure returns (uint256 z) {\n\n z = n % 2 != 0 ? x : RAY;\n\n\n\n for (n /= 2; n != 0; n /= 2) {\n\n x = rmul(x, x);\n\n\n\n if (n % 2 != 0) {\n\n z = rmul(z, x);\n\n }\n\n }\n\n }\n\n}\n\ncontract DSNote {\n\n event LogNote(\n\n bytes4 indexed sig,\n\n address indexed guy,\n\n bytes32 indexed foo,\n\n bytes32 indexed bar,\n\n uint256 wad,\n\n bytes fax\n\n ) anonymous;\n\n\n\n modifier note {\n\n bytes32 foo;\n\n bytes32 bar;\n\n\n\n assembly {\n\n foo := calldataload(4)\n\n bar := calldataload(36)\n\n }\n\n\n\n emit LogNote(msg.sig, msg.sender, foo, bar, msg.value, msg.data);\n\n\n\n _;\n\n }\n\n}\n\nabstract contract DSProxy is DSAuth, DSNote {\n\n DSProxyCache public cache; // global cache for contracts\n\n\n\n constructor(address _cacheAddr) public {\n\n require(setCache(_cacheAddr));\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external payable {}\n\n\n\n // use the proxy to execute calldata _data on contract _code\n\n // function execute(bytes memory _code, bytes memory _data)\n\n // public\n\n // payable\n\n // virtual\n\n // returns (address target, bytes32 response);\n\n\n\n function execute(address _target, bytes memory _data)\n\n public\n\n payable\n\n virtual\n\n returns (bytes32 response);\n\n\n\n //set new cache\n\n function setCache(address _cacheAddr) public virtual payable returns (bool);\n\n}\n\ncontract DSProxyCache {\n\n mapping(bytes32 => address) cache;\n\n\n\n function read(bytes memory _code) public view returns (address) {\n\n bytes32 hash = keccak256(_code);\n\n return cache[hash];\n\n }\n\n\n\n function write(bytes memory _code) public returns (address target) {\n\n assembly {\n\n target := create(0, add(_code, 0x20), mload(_code))\n\n switch iszero(extcodesize(target))\n\n case 1 {\n\n // throw if contract failed to deploy\n\n revert(0, 0)\n\n }\n\n }\n\n bytes32 hash = keccak256(_code);\n\n cache[hash] = target;\n\n }\n\n}\n\nabstract contract DSProxyFactoryInterface {\n\n function build(address owner) public virtual returns (DSProxy proxy);\n\n}\n\ncontract Migrations {\n\n address public owner;\n\n uint public last_completed_migration;\n\n\n\n modifier restricted() {\n\n if (msg.sender == owner) _;\n\n }\n\n\n\n constructor() public {\n\n owner = msg.sender;\n\n }\n\n\n\n function setCompleted(uint completed) public restricted {\n\n last_completed_migration = completed;\n\n }\n\n\n\n function upgrade(address new_address) public restricted {\n\n Migrations upgraded = Migrations(new_address);\n\n upgraded.setCompleted(last_completed_migration);\n\n }\n\n}\n\ncontract AaveHelper is DSMath {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n\taddress public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant AAVE_LENDING_POOL_ADDRESSES = 0x24a42fD28C976A61Df5D00D0599C34c4f90748c8;\n\n uint public constant NINETY_NINE_PERCENT_WEI = 990000000000000000;\n\n uint16 public constant AAVE_REFERRAL_CODE = 64;\n\n\n\n /// @param _collateralAddress underlying token address\n\n /// @param _user users address\n\n\tfunction getMaxCollateral(address _collateralAddress, address _user) public view returns (uint256) {\n\n address lendingPoolAddressDataProvider = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolDataProvider();\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n uint256 pow10 = 10 ** (18 - _getDecimals(_collateralAddress));\n\n\n\n // fetch all needed data\n\n (,uint256 totalCollateralETH, uint256 totalBorrowsETH,,uint256 currentLTV,,,) = ILendingPool(lendingPoolAddressDataProvider).calculateUserGlobalData(_user);\n\n (,uint256 tokenLTV,,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_collateralAddress);\n\n uint256 collateralPrice = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_collateralAddress);\n\n uint256 userTokenBalance = ILendingPool(lendingPoolCoreAddress).getUserUnderlyingAssetBalance(_collateralAddress, _user);\n\n uint256 userTokenBalanceEth = wmul(userTokenBalance * pow10, collateralPrice);\n\n\n\n\t\t// if borrow is 0, return whole user balance\n\n if (totalBorrowsETH == 0) {\n\n \treturn userTokenBalance;\n\n }\n\n\n\n uint256 maxCollateralEth = div(sub(mul(currentLTV, totalCollateralETH), mul(totalBorrowsETH, 100)), currentLTV);\n\n\t\t/// @dev final amount can't be higher than users token balance\n\n maxCollateralEth = maxCollateralEth > userTokenBalanceEth ? userTokenBalanceEth : maxCollateralEth;\n\n\n\n // might happen due to wmul precision\n\n if (maxCollateralEth >= totalCollateralETH) {\n\n \treturn wdiv(totalCollateralETH, collateralPrice) / pow10;\n\n }\n\n\n\n // get sum of all other reserves multiplied with their liquidation thresholds by reversing formula\n\n uint256 a = sub(wmul(currentLTV, totalCollateralETH), wmul(tokenLTV, userTokenBalanceEth));\n\n // add new collateral amount multiplied by its threshold, and then divide with new total collateral\n\n uint256 newLiquidationThreshold = wdiv(add(a, wmul(sub(userTokenBalanceEth, maxCollateralEth), tokenLTV)), sub(totalCollateralETH, maxCollateralEth));\n\n\n\n // if new threshold is lower than first one, calculate new max collateral with newLiquidationThreshold\n\n if (newLiquidationThreshold < currentLTV) {\n\n \tmaxCollateralEth = div(sub(mul(newLiquidationThreshold, totalCollateralETH), mul(totalBorrowsETH, 100)), newLiquidationThreshold);\n\n \tmaxCollateralEth = maxCollateralEth > userTokenBalanceEth ? userTokenBalanceEth : maxCollateralEth;\n\n }\n\n\n\n\t\treturn wmul(wdiv(maxCollateralEth, collateralPrice) / pow10, NINETY_NINE_PERCENT_WEI);\n\n\t}\n\n\n\n\t/// @param _borrowAddress underlying token address\n\n\t/// @param _user users address\n\n\tfunction getMaxBorrow(address _borrowAddress, address _user) public view returns (uint256) {\n\n\t\taddress lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\t\taddress priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n\t\t(,,,,uint256 availableBorrowsETH,,,) = ILendingPool(lendingPoolAddress).getUserAccountData(_user);\n\n\n\n\t\tuint256 borrowPrice = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_borrowAddress);\n\n\n\n\t\treturn wmul(wdiv(availableBorrowsETH, borrowPrice) / (10 ** (18 - _getDecimals(_borrowAddress))), NINETY_NINE_PERCENT_WEI);\n\n\t}\n\n\n\n function getMaxBoost(address _borrowAddress, address _collateralAddress, address _user) public view returns (uint256) {\n\n address lendingPoolAddressDataProvider = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolDataProvider();\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n (,uint256 totalCollateralETH, uint256 totalBorrowsETH,,uint256 currentLTV,,,) = ILendingPool(lendingPoolAddressDataProvider).calculateUserGlobalData(_user);\n\n (,uint256 tokenLTV,,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_collateralAddress);\n\n totalCollateralETH = div(mul(totalCollateralETH, currentLTV), 100);\n\n\n\n uint256 availableBorrowsETH = wmul(mul(div(sub(totalCollateralETH, totalBorrowsETH), sub(100, tokenLTV)), 100), NINETY_NINE_PERCENT_WEI);\n\n uint256 borrowPrice = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_borrowAddress);\n\n\n\n return wdiv(availableBorrowsETH, borrowPrice) / (10 ** (18 - _getDecimals(_borrowAddress)));\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _tokenAddr token addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getFee(uint _amount, address _user, uint _gasCost, address _tokenAddr) internal returns (uint feeAmount) {\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(_user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(_user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n uint256 price = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddr);\n\n\n\n _gasCost = wmul(_gasCost, price) / (10 ** (18 - _getDecimals(_tokenAddr)));\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (_tokenAddr == ETH_ADDR) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Calculates the gas cost for transaction\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _tokenAddr token addr. of token we are getting for the fee\n\n /// @return gasCost The amount we took for the gas cost\n\n function getGasCost(uint _amount, address _user, uint _gasCost, address _tokenAddr) internal returns (uint gasCost) {\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n if (_gasCost != 0) {\n\n uint256 price = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddr);\n\n _gasCost = wmul(_gasCost, price);\n\n\n\n gasCost = _gasCost;\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (gasCost > (_amount / 5)) {\n\n gasCost = _amount / 5;\n\n }\n\n\n\n if (_tokenAddr == ETH_ADDR) {\n\n WALLET_ADDR.transfer(gasCost);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(WALLET_ADDR, gasCost);\n\n }\n\n }\n\n\n\n\n\n /// @notice Returns the owner of the DSProxy that called the contract\n\n function getUserAddress() internal view returns (address) {\n\n DSProxy proxy = DSProxy(payable(address(this)));\n\n\n\n return proxy.owner();\n\n }\n\n\n\n /// @notice Approves token contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _caller Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _caller) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_caller, 0);\n\n ERC20(_tokenAddr).safeApprove(_caller, uint256(-1));\n\n }\n\n }\n\n\n\n /// @notice Send specific amount from contract to specific user\n\n /// @param _token Token we are trying to send\n\n /// @param _user User that should receive funds\n\n /// @param _amount Amount that should be sent\n\n function sendContractBalance(address _token, address _user, uint _amount) public {\n\n if (_amount == 0) return;\n\n\n\n if (_token == ETH_ADDR) {\n\n payable(_user).transfer(_amount);\n\n } else {\n\n ERC20(_token).safeTransfer(_user, _amount);\n\n }\n\n }\n\n\n\n function sendFullContractBalance(address _token, address _user) public {\n\n if (_token == ETH_ADDR) {\n\n sendContractBalance(_token, _user, address(this).balance);\n\n } else {\n\n sendContractBalance(_token, _user, ERC20(_token).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function _getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == ETH_ADDR) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n}\n\ncontract AaveSafetyRatio is AaveHelper {\n\n\n\n function getSafetyRatio(address _user) public view returns(uint256) {\n\n address lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n (,,uint256 totalBorrowsETH,,uint256 availableBorrowsETH,,,) = ILendingPool(lendingPoolAddress).getUserAccountData(_user);\n\n\n\n if (totalBorrowsETH == 0) return uint256(0);\n\n\n\n return wdiv(add(totalBorrowsETH, availableBorrowsETH), totalBorrowsETH);\n\n }\n\n}\n\ncontract AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public owner;\n\n address public admin;\n\n\n\n modifier onlyOwner() {\n\n require(owner == msg.sender);\n\n _;\n\n }\n\n\n\n constructor() public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Admin is set by owner first time, after that admin is super role and has permission to change owner\n\n /// @param _admin Address of multisig that becomes admin\n\n function setAdminByOwner(address _admin) public {\n\n require(msg.sender == owner);\n\n require(admin == address(0));\n\n\n\n admin = _admin;\n\n }\n\n\n\n /// @notice Admin is able to set new admin\n\n /// @param _admin Address of multisig that becomes new admin\n\n function setAdminByAdmin(address _admin) public {\n\n require(msg.sender == admin);\n\n\n\n admin = _admin;\n\n }\n\n\n\n /// @notice Admin is able to change owner\n\n /// @param _owner Address of new owner\n\n function setOwnerByAdmin(address _owner) public {\n\n require(msg.sender == admin);\n\n\n\n owner = _owner;\n\n }\n\n\n\n /// @notice Destroy the contract\n\n function kill() public onlyOwner {\n\n selfdestruct(payable(owner));\n\n }\n\n\n\n /// @notice withdraw stuck funds\n\n function withdrawStuckFunds(address _token, uint _amount) public onlyOwner {\n\n if (_token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {\n\n payable(owner).transfer(_amount);\n\n } else {\n\n ERC20(_token).safeTransfer(owner, _amount);\n\n }\n\n }\n\n}\n\ncontract Auth is AdminAuth {\n\n\n\n\tbool public ALL_AUTHORIZED = false;\n\n\n\n\tmapping(address => bool) public authorized;\n\n\n\n\tmodifier onlyAuthorized() {\n\n require(ALL_AUTHORIZED || authorized[msg.sender]);\n\n _;\n\n }\n\n\n\n\tconstructor() public {\n\n\t\tauthorized[msg.sender] = true;\n\n\t}\n\n\n\n\tfunction setAuthorized(address _user, bool _approved) public onlyOwner {\n\n\t\tauthorized[_user] = _approved;\n\n\t}\n\n\n\n\tfunction setAllAuthorized(bool _authorized) public onlyOwner {\n\n\t\tALL_AUTHORIZED = _authorized;\n\n\t}\n\n}\n\ncontract ProxyPermission {\n\n address public constant FACTORY_ADDRESS = 0x5a15566417e6C1c9546523066500bDDBc53F88C7;\n\n\n\n /// @notice Called in the context of DSProxy to authorize an address\n\n /// @param _contractAddr Address which will be authorized\n\n function givePermission(address _contractAddr) public {\n\n address currAuthority = address(DSAuth(address(this)).authority());\n\n DSGuard guard = DSGuard(currAuthority);\n\n\n\n if (currAuthority == address(0)) {\n\n guard = DSGuardFactory(FACTORY_ADDRESS).newGuard();\n\n DSAuth(address(this)).setAuthority(DSAuthority(address(guard)));\n\n }\n\n\n\n guard.permit(_contractAddr, address(this), bytes4(keccak256(\"execute(address,bytes)\")));\n\n }\n\n\n\n /// @notice Called in the context of DSProxy to remove authority of an address\n\n /// @param _contractAddr Auth address which will be removed from authority list\n\n function removePermission(address _contractAddr) public {\n\n address currAuthority = address(DSAuth(address(this)).authority());\n\n \n\n // if there is no authority, that means that contract doesn't have permission\n\n if (currAuthority == address(0)) {\n\n return;\n\n }\n\n\n\n DSGuard guard = DSGuard(currAuthority);\n\n guard.forbid(_contractAddr, address(this), bytes4(keccak256(\"execute(address,bytes)\")));\n\n }\n\n\n\n function proxyOwner() internal returns(address) {\n\n return DSAuth(address(this)).owner();\n\n } \n\n}\n\ncontract CompoundMonitorProxy is AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint public CHANGE_PERIOD;\n\n address public monitor;\n\n address public newMonitor;\n\n address public lastMonitor;\n\n uint public changeRequestedTimestamp;\n\n\n\n mapping(address => bool) public allowed;\n\n\n\n event MonitorChangeInitiated(address oldMonitor, address newMonitor);\n\n event MonitorChangeCanceled();\n\n event MonitorChangeFinished(address monitor);\n\n event MonitorChangeReverted(address monitor);\n\n\n\n // if someone who is allowed become malicious, owner can't be changed\n\n modifier onlyAllowed() {\n\n require(allowed[msg.sender] || msg.sender == owner);\n\n _;\n\n }\n\n\n\n modifier onlyMonitor() {\n\n require (msg.sender == monitor);\n\n _;\n\n }\n\n\n\n constructor(uint _changePeriod) public {\n\n CHANGE_PERIOD = _changePeriod * 1 days;\n\n }\n\n\n\n /// @notice Only monitor contract is able to call execute on users proxy\n\n /// @param _owner Address of cdp owner (users DSProxy address)\n\n /// @param _compoundSaverProxy Address of CompoundSaverProxy\n\n /// @param _data Data to send to CompoundSaverProxy\n\n function callExecute(address _owner, address _compoundSaverProxy, bytes memory _data) public payable onlyMonitor {\n\n // execute reverts if calling specific method fails\n\n DSProxyInterface(_owner).execute{value: msg.value}(_compoundSaverProxy, _data);\n\n\n\n // return if anything left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Allowed users are able to set Monitor contract without any waiting period first time\n\n /// @param _monitor Address of Monitor contract\n\n function setMonitor(address _monitor) public onlyAllowed {\n\n require(monitor == address(0));\n\n monitor = _monitor;\n\n }\n\n\n\n /// @notice Allowed users are able to start procedure for changing monitor\n\n /// @dev after CHANGE_PERIOD needs to call confirmNewMonitor to actually make a change\n\n /// @param _newMonitor address of new monitor\n\n function changeMonitor(address _newMonitor) public onlyAllowed {\n\n require(changeRequestedTimestamp == 0);\n\n\n\n changeRequestedTimestamp = now;\n\n lastMonitor = monitor;\n\n newMonitor = _newMonitor;\n\n\n\n emit MonitorChangeInitiated(lastMonitor, newMonitor);\n\n }\n\n\n\n /// @notice At any point allowed users are able to cancel monitor change\n\n function cancelMonitorChange() public onlyAllowed {\n\n require(changeRequestedTimestamp > 0);\n\n\n\n changeRequestedTimestamp = 0;\n\n newMonitor = address(0);\n\n\n\n emit MonitorChangeCanceled();\n\n }\n\n\n\n /// @notice Anyone is able to confirm new monitor after CHANGE_PERIOD if process is started\n\n function confirmNewMonitor() public onlyAllowed {\n\n require((changeRequestedTimestamp + CHANGE_PERIOD) < now);\n\n require(changeRequestedTimestamp != 0);\n\n require(newMonitor != address(0));\n\n\n\n monitor = newMonitor;\n\n newMonitor = address(0);\n\n changeRequestedTimestamp = 0;\n\n\n\n emit MonitorChangeFinished(monitor);\n\n }\n\n\n\n /// @notice Its possible to revert monitor to last used monitor\n\n function revertMonitor() public onlyAllowed {\n\n require(lastMonitor != address(0));\n\n\n\n monitor = lastMonitor;\n\n\n\n emit MonitorChangeReverted(monitor);\n\n }\n\n\n\n\n\n /// @notice Allowed users are able to add new allowed user\n\n /// @param _user Address of user that will be allowed\n\n function addAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = true;\n\n }\n\n\n\n /// @notice Allowed users are able to remove allowed user\n\n /// @dev owner is always allowed even if someone tries to remove it from allowed mapping\n\n /// @param _user Address of allowed user\n\n function removeAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = false;\n\n }\n\n\n\n function setChangePeriod(uint _periodInDays) public onlyAllowed {\n\n require(_periodInDays * 1 days > CHANGE_PERIOD);\n\n\n\n CHANGE_PERIOD = _periodInDays * 1 days;\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n /// @param _token address of token to withdraw balance\n\n function withdrawToken(address _token) public onlyOwner {\n\n uint balance = ERC20(_token).balanceOf(address(this));\n\n ERC20(_token).safeTransfer(msg.sender, balance);\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n function withdrawEth() public onlyOwner {\n\n uint balance = address(this).balance;\n\n msg.sender.transfer(balance);\n\n }\n\n}\n\ncontract CompoundSubscriptions is AdminAuth {\n\n\n\n struct CompoundHolder {\n\n address user;\n\n uint128 minRatio;\n\n uint128 maxRatio;\n\n uint128 optimalRatioBoost;\n\n uint128 optimalRatioRepay;\n\n bool boostEnabled;\n\n }\n\n\n\n struct SubPosition {\n\n uint arrPos;\n\n bool subscribed;\n\n }\n\n\n\n CompoundHolder[] public subscribers;\n\n mapping (address => SubPosition) public subscribersPos;\n\n\n\n uint public changeIndex;\n\n\n\n event Subscribed(address indexed user);\n\n event Unsubscribed(address indexed user);\n\n event Updated(address indexed user);\n\n event ParamUpdates(address indexed user, uint128, uint128, uint128, uint128, bool);\n\n\n\n /// @dev Called by the DSProxy contract which owns the Compound position\n\n /// @notice Adds the users Compound poistion in the list of subscriptions so it can be monitored\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalBoost Ratio amount which boost should target\n\n /// @param _optimalRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) external {\n\n\n\n // if boost is not enabled, set max ratio to max uint\n\n uint128 localMaxRatio = _boostEnabled ? _maxRatio : uint128(-1);\n\n require(checkParams(_minRatio, localMaxRatio), \"Must be correct params\");\n\n\n\n SubPosition storage subInfo = subscribersPos[msg.sender];\n\n\n\n CompoundHolder memory subscription = CompoundHolder({\n\n minRatio: _minRatio,\n\n maxRatio: localMaxRatio,\n\n optimalRatioBoost: _optimalBoost,\n\n optimalRatioRepay: _optimalRepay,\n\n user: msg.sender,\n\n boostEnabled: _boostEnabled\n\n });\n\n\n\n changeIndex++;\n\n\n\n if (subInfo.subscribed) {\n\n subscribers[subInfo.arrPos] = subscription;\n\n\n\n emit Updated(msg.sender);\n\n emit ParamUpdates(msg.sender, _minRatio, localMaxRatio, _optimalBoost, _optimalRepay, _boostEnabled);\n\n } else {\n\n subscribers.push(subscription);\n\n\n\n subInfo.arrPos = subscribers.length - 1;\n\n subInfo.subscribed = true;\n\n\n\n emit Subscribed(msg.sender);\n\n }\n\n }\n\n\n\n /// @notice Called by the users DSProxy\n\n /// @dev Owner who subscribed cancels his subscription\n\n function unsubscribe() external {\n\n _unsubscribe(msg.sender);\n\n }\n\n\n\n /// @dev Checks limit if minRatio is bigger than max\n\n /// @param _minRatio Minimum ratio, bellow which repay can be triggered\n\n /// @param _maxRatio Maximum ratio, over which boost can be triggered\n\n /// @return Returns bool if the params are correct\n\n function checkParams(uint128 _minRatio, uint128 _maxRatio) internal pure returns (bool) {\n\n\n\n if (_minRatio > _maxRatio) {\n\n return false;\n\n }\n\n\n\n return true;\n\n }\n\n\n\n /// @dev Internal method to remove a subscriber from the list\n\n /// @param _user The actual address that owns the Compound position\n\n function _unsubscribe(address _user) internal {\n\n require(subscribers.length > 0, \"Must have subscribers in the list\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n require(subInfo.subscribed, \"Must first be subscribed\");\n\n\n\n address lastOwner = subscribers[subscribers.length - 1].user;\n\n\n\n SubPosition storage subInfo2 = subscribersPos[lastOwner];\n\n subInfo2.arrPos = subInfo.arrPos;\n\n\n\n subscribers[subInfo.arrPos] = subscribers[subscribers.length - 1];\n\n subscribers.pop(); // remove last element and reduce arr length\n\n\n\n changeIndex++;\n\n subInfo.subscribed = false;\n\n subInfo.arrPos = 0;\n\n\n\n emit Unsubscribed(msg.sender);\n\n }\n\n\n\n /// @dev Checks if the user is subscribed\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return If the user is subscribed\n\n function isSubscribed(address _user) public view returns (bool) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subInfo.subscribed;\n\n }\n\n\n\n /// @dev Returns subscribtion information about a user\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return Subscription information about the user if exists\n\n function getHolder(address _user) public view returns (CompoundHolder memory) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subscribers[subInfo.arrPos];\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n /// @return List of all subscribers\n\n function getSubscribers() public view returns (CompoundHolder[] memory) {\n\n return subscribers;\n\n }\n\n\n\n /// @notice Helper method for the frontend, returns all the subscribed CDPs paginated\n\n /// @param _page What page of subscribers you want\n\n /// @param _perPage Number of entries per page\n\n /// @return List of all subscribers for that page\n\n function getSubscribersByPage(uint _page, uint _perPage) public view returns (CompoundHolder[] memory) {\n\n CompoundHolder[] memory holders = new CompoundHolder[](_perPage);\n\n\n\n uint start = _page * _perPage;\n\n uint end = start + _perPage;\n\n\n\n end = (end > holders.length) ? holders.length : end;\n\n\n\n uint count = 0;\n\n for (uint i = start; i < end; i++) {\n\n holders[count] = subscribers[i];\n\n count++;\n\n }\n\n\n\n return holders;\n\n }\n\n\n\n ////////////// ADMIN METHODS ///////////////////\n\n\n\n /// @notice Admin function to unsubscribe a CDP\n\n /// @param _user The actual address that owns the Compound position\n\n function unsubscribeByAdmin(address _user) public onlyOwner {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n if (subInfo.subscribed) {\n\n _unsubscribe(_user);\n\n }\n\n }\n\n}\n\ncontract CompoundSubscriptionsProxy is ProxyPermission {\n\n\n\n address public constant COMPOUND_SUBSCRIPTION_ADDRESS = 0x52015EFFD577E08f498a0CCc11905925D58D6207;\n\n address public constant COMPOUND_MONITOR_PROXY = 0xB1cF8DE8e791E4Ed1Bd86c03E2fc1f14389Cb10a;\n\n\n\n /// @notice Calls subscription contract and creates a DSGuard if non existent\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n givePermission(COMPOUND_MONITOR_PROXY);\n\n ICompoundSubscription(COMPOUND_SUBSCRIPTION_ADDRESS).subscribe(\n\n _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls subscription contract and updated existing parameters\n\n /// @dev If subscription is non existent this will create one\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function update(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n ICompoundSubscription(COMPOUND_SUBSCRIPTION_ADDRESS).subscribe(_minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls the subscription contract to unsubscribe the caller\n\n function unsubscribe() public {\n\n removePermission(COMPOUND_MONITOR_PROXY);\n\n ICompoundSubscription(COMPOUND_SUBSCRIPTION_ADDRESS).unsubscribe();\n\n }\n\n}\n\ncontract CompoundCreateTaker is ProxyPermission {\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n struct CreateInfo {\n\n address cCollAddress;\n\n address cBorrowAddress;\n\n uint depositAmount;\n\n }\n\n\n\n /// @notice Main function which will take a FL and open a leverage position\n\n /// @dev Call through DSProxy, if _exchangeData.destAddr is a token approve DSProxy\n\n /// @param _createInfo [cCollAddress, cBorrowAddress, depositAmount]\n\n /// @param _exchangeData Exchange data struct\n\n function openLeveragedLoan(\n\n CreateInfo memory _createInfo,\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n address payable _compReceiver\n\n ) public payable {\n\n uint loanAmount = _exchangeData.srcAmount;\n\n\n\n // Pull tokens from user\n\n if (_exchangeData.destAddr != ETH_ADDRESS) {\n\n ERC20(_exchangeData.destAddr).safeTransferFrom(msg.sender, address(this), _createInfo.depositAmount);\n\n } else {\n\n require(msg.value >= _createInfo.depositAmount, \"Must send correct amount of eth\");\n\n }\n\n\n\n // Send tokens to FL receiver\n\n sendDeposit(_compReceiver, _exchangeData.destAddr);\n\n\n\n // Pack the struct data\n\n (uint[4] memory numData, address[6] memory cAddresses, bytes memory callData)\n\n = _packData(_createInfo, _exchangeData);\n\n bytes memory paramsData = abi.encode(numData, cAddresses, callData, address(this));\n\n\n\n givePermission(_compReceiver);\n\n\n\n lendingPool.flashLoan(_compReceiver, _exchangeData.srcAddr, loanAmount, paramsData);\n\n\n\n removePermission(_compReceiver);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundLeveragedLoan\",\n\n abi.encode(_exchangeData.srcAddr, _exchangeData.destAddr, _exchangeData.srcAmount, _exchangeData.destAmount));\n\n }\n\n\n\n function sendDeposit(address payable _compoundReceiver, address _token) internal {\n\n if (_token != ETH_ADDRESS) {\n\n ERC20(_token).safeTransfer(_compoundReceiver, ERC20(_token).balanceOf(address(this)));\n\n }\n\n\n\n _compoundReceiver.transfer(address(this).balance);\n\n }\n\n\n\n function _packData(\n\n CreateInfo memory _createInfo,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[4] memory numData, address[6] memory cAddresses, bytes memory callData) {\n\n\n\n numData = [\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n cAddresses = [\n\n _createInfo.cCollAddress,\n\n _createInfo.cBorrowAddress,\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n}\n\ncontract CarefulMath {\n\n\n\n /**\n\n * @dev Possible error codes that we can return\n\n */\n\n enum MathError {\n\n NO_ERROR,\n\n DIVISION_BY_ZERO,\n\n INTEGER_OVERFLOW,\n\n INTEGER_UNDERFLOW\n\n }\n\n\n\n /**\n\n * @dev Multiplies two numbers, returns an error on overflow.\n\n */\n\n function mulUInt(uint a, uint b) internal pure returns (MathError, uint) {\n\n if (a == 0) {\n\n return (MathError.NO_ERROR, 0);\n\n }\n\n\n\n uint c = a * b;\n\n\n\n if (c / a != b) {\n\n return (MathError.INTEGER_OVERFLOW, 0);\n\n } else {\n\n return (MathError.NO_ERROR, c);\n\n }\n\n }\n\n\n\n /**\n\n * @dev Integer division of two numbers, truncating the quotient.\n\n */\n\n function divUInt(uint a, uint b) internal pure returns (MathError, uint) {\n\n if (b == 0) {\n\n return (MathError.DIVISION_BY_ZERO, 0);\n\n }\n\n\n\n return (MathError.NO_ERROR, a / b);\n\n }\n\n\n\n /**\n\n * @dev Subtracts two numbers, returns an error on overflow (i.e. if subtrahend is greater than minuend).\n\n */\n\n function subUInt(uint a, uint b) internal pure returns (MathError, uint) {\n\n if (b <= a) {\n\n return (MathError.NO_ERROR, a - b);\n\n } else {\n\n return (MathError.INTEGER_UNDERFLOW, 0);\n\n }\n\n }\n\n\n\n /**\n\n * @dev Adds two numbers, returns an error on overflow.\n\n */\n\n function addUInt(uint a, uint b) internal pure returns (MathError, uint) {\n\n uint c = a + b;\n\n\n\n if (c >= a) {\n\n return (MathError.NO_ERROR, c);\n\n } else {\n\n return (MathError.INTEGER_OVERFLOW, 0);\n\n }\n\n }\n\n\n\n /**\n\n * @dev add a and b and then subtract c\n\n */\n\n function addThenSubUInt(uint a, uint b, uint c) internal pure returns (MathError, uint) {\n\n (MathError err0, uint sum) = addUInt(a, b);\n\n\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, 0);\n\n }\n\n\n\n return subUInt(sum, c);\n\n }\n\n}\n\ncontract Exponential is CarefulMath {\n\n uint constant expScale = 1e18;\n\n uint constant halfExpScale = expScale/2;\n\n uint constant mantissaOne = expScale;\n\n\n\n struct Exp {\n\n uint mantissa;\n\n }\n\n\n\n /**\n\n * @dev Creates an exponential from numerator and denominator values.\n\n * Note: Returns an error if (`num` * 10e18) > MAX_INT,\n\n * or if `denom` is zero.\n\n */\n\n function getExp(uint num, uint denom) pure internal returns (MathError, Exp memory) {\n\n (MathError err0, uint scaledNumerator) = mulUInt(num, expScale);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n\n\n (MathError err1, uint rational) = divUInt(scaledNumerator, denom);\n\n if (err1 != MathError.NO_ERROR) {\n\n return (err1, Exp({mantissa: 0}));\n\n }\n\n\n\n return (MathError.NO_ERROR, Exp({mantissa: rational}));\n\n }\n\n\n\n /**\n\n * @dev Adds two exponentials, returning a new exponential.\n\n */\n\n function addExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {\n\n (MathError error, uint result) = addUInt(a.mantissa, b.mantissa);\n\n\n\n return (error, Exp({mantissa: result}));\n\n }\n\n\n\n /**\n\n * @dev Subtracts two exponentials, returning a new exponential.\n\n */\n\n function subExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {\n\n (MathError error, uint result) = subUInt(a.mantissa, b.mantissa);\n\n\n\n return (error, Exp({mantissa: result}));\n\n }\n\n\n\n /**\n\n * @dev Multiply an Exp by a scalar, returning a new Exp.\n\n */\n\n function mulScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {\n\n (MathError err0, uint scaledMantissa) = mulUInt(a.mantissa, scalar);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n\n\n return (MathError.NO_ERROR, Exp({mantissa: scaledMantissa}));\n\n }\n\n\n\n /**\n\n * @dev Multiply an Exp by a scalar, then truncate to return an unsigned integer.\n\n */\n\n function mulScalarTruncate(Exp memory a, uint scalar) pure internal returns (MathError, uint) {\n\n (MathError err, Exp memory product) = mulScalar(a, scalar);\n\n if (err != MathError.NO_ERROR) {\n\n return (err, 0);\n\n }\n\n\n\n return (MathError.NO_ERROR, truncate(product));\n\n }\n\n\n\n /**\n\n * @dev Multiply an Exp by a scalar, truncate, then add an to an unsigned integer, returning an unsigned integer.\n\n */\n\n function mulScalarTruncateAddUInt(Exp memory a, uint scalar, uint addend) pure internal returns (MathError, uint) {\n\n (MathError err, Exp memory product) = mulScalar(a, scalar);\n\n if (err != MathError.NO_ERROR) {\n\n return (err, 0);\n\n }\n\n\n\n return addUInt(truncate(product), addend);\n\n }\n\n\n\n /**\n\n * @dev Divide an Exp by a scalar, returning a new Exp.\n\n */\n\n function divScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {\n\n (MathError err0, uint descaledMantissa) = divUInt(a.mantissa, scalar);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n\n\n return (MathError.NO_ERROR, Exp({mantissa: descaledMantissa}));\n\n }\n\n\n\n /**\n\n * @dev Divide a scalar by an Exp, returning a new Exp.\n\n */\n\n function divScalarByExp(uint scalar, Exp memory divisor) pure internal returns (MathError, Exp memory) {\n\n /*\n\n We are doing this as:\n\n getExp(mulUInt(expScale, scalar), divisor.mantissa)\n\n\n\n How it works:\n\n Exp = a / b;\n\n Scalar = s;\n\n `s / (a / b)` = `b * s / a` and since for an Exp `a = mantissa, b = expScale`\n\n */\n\n (MathError err0, uint numerator) = mulUInt(expScale, scalar);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n return getExp(numerator, divisor.mantissa);\n\n }\n\n\n\n /**\n\n * @dev Divide a scalar by an Exp, then truncate to return an unsigned integer.\n\n */\n\n function divScalarByExpTruncate(uint scalar, Exp memory divisor) pure internal returns (MathError, uint) {\n\n (MathError err, Exp memory fraction) = divScalarByExp(scalar, divisor);\n\n if (err != MathError.NO_ERROR) {\n\n return (err, 0);\n\n }\n\n\n\n return (MathError.NO_ERROR, truncate(fraction));\n\n }\n\n\n\n /**\n\n * @dev Multiplies two exponentials, returning a new exponential.\n\n */\n\n function mulExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {\n\n\n\n (MathError err0, uint doubleScaledProduct) = mulUInt(a.mantissa, b.mantissa);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n\n\n // We add half the scale before dividing so that we get rounding instead of truncation.\n\n // See \"Listing 6\" and text above it at https://accu.org/index.php/journals/1717\n\n // Without this change, a result like 6.6...e-19 will be truncated to 0 instead of being rounded to 1e-18.\n\n (MathError err1, uint doubleScaledProductWithHalfScale) = addUInt(halfExpScale, doubleScaledProduct);\n\n if (err1 != MathError.NO_ERROR) {\n\n return (err1, Exp({mantissa: 0}));\n\n }\n\n\n\n (MathError err2, uint product) = divUInt(doubleScaledProductWithHalfScale, expScale);\n\n // The only error `div` can return is MathError.DIVISION_BY_ZERO but we control `expScale` and it is not zero.\n\n assert(err2 == MathError.NO_ERROR);\n\n\n\n return (MathError.NO_ERROR, Exp({mantissa: product}));\n\n }\n\n\n\n /**\n\n * @dev Multiplies two exponentials given their mantissas, returning a new exponential.\n\n */\n\n function mulExp(uint a, uint b) pure internal returns (MathError, Exp memory) {\n\n return mulExp(Exp({mantissa: a}), Exp({mantissa: b}));\n\n }\n\n\n\n /**\n\n * @dev Multiplies three exponentials, returning a new exponential.\n\n */\n\n function mulExp3(Exp memory a, Exp memory b, Exp memory c) pure internal returns (MathError, Exp memory) {\n\n (MathError err, Exp memory ab) = mulExp(a, b);\n\n if (err != MathError.NO_ERROR) {\n\n return (err, ab);\n\n }\n\n return mulExp(ab, c);\n\n }\n\n\n\n /**\n\n * @dev Divides two exponentials, returning a new exponential.\n\n * (a/scale) / (b/scale) = (a/scale) * (scale/b) = a/b,\n\n * which we can scale as an Exp by calling getExp(a.mantissa, b.mantissa)\n\n */\n\n function divExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {\n\n return getExp(a.mantissa, b.mantissa);\n\n }\n\n\n\n /**\n\n * @dev Truncates the given exp to a whole number value.\n\n * For example, truncate(Exp{mantissa: 15 * expScale}) = 15\n\n */\n\n function truncate(Exp memory exp) pure internal returns (uint) {\n\n // Note: We are not using careful math here as we're performing a division that cannot fail\n\n return exp.mantissa / expScale;\n\n }\n\n\n\n /**\n\n * @dev Checks if first Exp is less than second Exp.\n\n */\n\n function lessThanExp(Exp memory left, Exp memory right) pure internal returns (bool) {\n\n return left.mantissa < right.mantissa;\n\n }\n\n\n\n /**\n\n * @dev Checks if left Exp <= right Exp.\n\n */\n\n function lessThanOrEqualExp(Exp memory left, Exp memory right) pure internal returns (bool) {\n\n return left.mantissa <= right.mantissa;\n\n }\n\n\n\n /**\n\n * @dev Checks if left Exp > right Exp.\n\n */\n\n function greaterThanExp(Exp memory left, Exp memory right) pure internal returns (bool) {\n\n return left.mantissa > right.mantissa;\n\n }\n\n\n\n /**\n\n * @dev returns true if Exp is exactly zero\n\n */\n\n function isZeroExp(Exp memory value) pure internal returns (bool) {\n\n return value.mantissa == 0;\n\n }\n\n}\n\ncontract CompoundBorrowProxy {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n function borrow(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) public {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cCollToken;\n\n markets[1] = _cBorrowToken;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n\n\n require(CTokenInterface(_cBorrowToken).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_borrowToken != ETH_ADDR) {\n\n ERC20(_borrowToken).safeTransfer(msg.sender, ERC20(_borrowToken).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n}\n\ncontract CreamSafetyRatio is Exponential, DSMath {\n\n // solhint-disable-next-line const-name-snakecase\n\n ComptrollerInterface public constant comp = ComptrollerInterface(0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258);\n\n\n\n /// @notice Calcualted the ratio of debt / adjusted collateral\n\n /// @param _user Address of the user\n\n function getSafetyRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n\n\n uint sumCollateral = 0;\n\n uint sumBorrow = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in Eth\n\n if (cTokenBalance != 0) {\n\n\n\n (, uint collFactorMantissa) = comp.markets(address(asset));\n\n\n\n Exp memory collateralFactor = Exp({mantissa: collFactorMantissa});\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n\n\n (, Exp memory tokensToEther) = mulExp3(collateralFactor, exchangeRate, oraclePrice);\n\n\n\n (, sumCollateral) = mulScalarTruncateAddUInt(tokensToEther, cTokenBalance, sumCollateral);\n\n }\n\n\n\n // Sum up debt in Eth\n\n if (borrowBalance != 0) {\n\n (, sumBorrow) = mulScalarTruncateAddUInt(oraclePrice, borrowBalance, sumBorrow);\n\n }\n\n }\n\n\n\n if (sumBorrow == 0) return uint(-1);\n\n\n\n uint borrowPowerUsed = (sumBorrow * 10**18) / sumCollateral;\n\n return wdiv(1e18, borrowPowerUsed);\n\n }\n\n}\n\ncontract CreamSaverHelper is DSMath, Exponential {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0xD06527D5e56A3495252A528C4987003b712860eE;\n\n address public constant COMPTROLLER = 0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n /// @notice Helper method to payback the cream debt\n\n /// @dev If amount is bigger it will repay the whole debt and send the extra to the _user\n\n /// @param _amount Amount of tokens we want to repay\n\n /// @param _cBorrowToken Ctoken address we are repaying\n\n /// @param _borrowToken Token address we are repaying\n\n /// @param _user Owner of the cream position we are paying back\n\n function paybackDebt(uint _amount, address _cBorrowToken, address _borrowToken, address payable _user) internal {\n\n uint wholeDebt = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(address(this));\n\n\n\n if (_amount > wholeDebt) {\n\n if (_borrowToken == ETH_ADDRESS) {\n\n _user.transfer((_amount - wholeDebt));\n\n } else {\n\n ERC20(_borrowToken).safeTransfer(_user, (_amount - wholeDebt));\n\n }\n\n\n\n _amount = wholeDebt;\n\n }\n\n\n\n approveCToken(_borrowToken, _cBorrowToken);\n\n\n\n if (_borrowToken == ETH_ADDRESS) {\n\n CEtherInterface(_cBorrowToken).repayBorrow{value: _amount}();\n\n } else {\n\n require(CTokenInterface(_cBorrowToken).repayBorrow(_amount) == 0);\n\n }\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getFee(uint _amount, address _user, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(_user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(_user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint ethTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n\n\n _gasCost = wdiv(_gasCost, ethTokenPrice);\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Calculates the gas cost of transaction and send it to wallet\n\n /// @param _amount Amount that is converted\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getGasCost(uint _amount, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint ethTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n\n\n feeAmount = wdiv(_gasCost, ethTokenPrice);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Enters the market for the collatera and borrow tokens\n\n /// @param _cTokenAddrColl Collateral address we are entering the market in\n\n /// @param _cTokenAddrBorrow Borrow address we are entering the market in\n\n function enterMarket(address _cTokenAddrColl, address _cTokenAddrBorrow) internal {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cTokenAddrColl;\n\n markets[1] = _cTokenAddrBorrow;\n\n\n\n ComptrollerInterface(COMPTROLLER).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveCToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, 0);\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n\n\n /// @notice Returns the owner of the DSProxy that called the contract\n\n function getUserAddress() internal view returns (address) {\n\n DSProxy proxy = DSProxy(uint160(address(this)));\n\n\n\n return proxy.owner();\n\n }\n\n\n\n /// @notice Returns the maximum amount of collateral available to withdraw\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cCollAddress Collateral we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. collateral amount in that token\n\n function getMaxCollateral(address _cCollAddress, address _account) public returns (uint) {\n\n (, uint liquidityInEth, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n uint usersBalance = CTokenInterface(_cCollAddress).balanceOfUnderlying(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n if (liquidityInEth == 0) return usersBalance;\n\n\n\n CTokenInterface(_cCollAddress).accrueInterest();\n\n\n\n if (_cCollAddress == CETH_ADDRESS) {\n\n if (liquidityInEth > usersBalance) return usersBalance;\n\n\n\n return sub(liquidityInEth, (liquidityInEth / 100));\n\n }\n\n\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cCollAddress);\n\n uint liquidityInToken = wdiv(liquidityInEth, ethPrice);\n\n\n\n if (liquidityInToken > usersBalance) return usersBalance;\n\n\n\n return sub(liquidityInToken, (liquidityInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n\n\n /// @notice Returns the maximum amount of borrow amount available\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cBorrowAddress Borrow token we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. borrow amount in that token\n\n function getMaxBorrow(address _cBorrowAddress, address _account) public returns (uint) {\n\n (, uint liquidityInEth, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n CTokenInterface(_cBorrowAddress).accrueInterest();\n\n\n\n if (_cBorrowAddress == CETH_ADDRESS) return sub(liquidityInEth, (liquidityInEth / 100));\n\n\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cBorrowAddress);\n\n uint liquidityInToken = wdiv(liquidityInEth, ethPrice);\n\n\n\n return sub(liquidityInToken, (liquidityInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n}\n\ncontract CreamBorrowProxy {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258;\n\n\n\n function borrow(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) public {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cCollToken;\n\n markets[1] = _cBorrowToken;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n\n\n require(CTokenInterface(_cBorrowToken).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_borrowToken != ETH_ADDR) {\n\n ERC20(_borrowToken).safeTransfer(msg.sender, ERC20(_borrowToken).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n}\n\ncontract AllowanceProxy is AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n // TODO: Real saver exchange address\n\n SaverExchange saverExchange = SaverExchange(0x235abFAd01eb1BDa28Ef94087FBAA63E18074926);\n\n\n\n function callSell(SaverExchangeCore.ExchangeData memory exData) public payable {\n\n pullAndSendTokens(exData.srcAddr, exData.srcAmount);\n\n\n\n saverExchange.sell{value: msg.value}(exData, msg.sender);\n\n }\n\n\n\n function callBuy(SaverExchangeCore.ExchangeData memory exData) public payable {\n\n pullAndSendTokens(exData.srcAddr, exData.srcAmount);\n\n\n\n saverExchange.buy{value: msg.value}(exData, msg.sender);\n\n }\n\n\n\n function pullAndSendTokens(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n require(msg.value >= _amount, \"msg.value smaller than amount\");\n\n } else {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(saverExchange), _amount);\n\n }\n\n }\n\n\n\n function ownerChangeExchange(address payable _newExchange) public onlyOwner {\n\n saverExchange = SaverExchange(_newExchange);\n\n }\n\n}\n\ncontract Prices is DSMath {\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n enum ActionType { SELL, BUY }\n\n\n\n\n\n /// @notice Returns the best estimated price from 2 exchanges\n\n /// @param _amount Amount of source tokens you want to exchange\n\n /// @param _srcToken Address of the source token\n\n /// @param _destToken Address of the destination token\n\n /// @param _type Type of action SELL|BUY\n\n /// @param _wrappers Array of wrapper addresses to compare\n\n /// @return (address, uint) The address of the best exchange and the exchange price\n\n function getBestPrice(\n\n uint256 _amount,\n\n address _srcToken,\n\n address _destToken,\n\n ActionType _type,\n\n address[] memory _wrappers\n\n ) public returns (address, uint256) {\n\n\n\n uint256[] memory rates = new uint256[](_wrappers.length);\n\n for (uint i=0; i<_wrappers.length; i++) {\n\n rates[i] = getExpectedRate(_wrappers[i], _srcToken, _destToken, _amount, _type);\n\n }\n\n\n\n if (_type == ActionType.SELL) {\n\n return getBiggestRate(_wrappers, rates);\n\n } else {\n\n return getSmallestRate(_wrappers, rates);\n\n }\n\n }\n\n\n\n /// @notice Return the expected rate from the exchange wrapper\n\n /// @dev In case of Oasis/Uniswap handles the different precision tokens\n\n /// @param _wrapper Address of exchange wrapper\n\n /// @param _srcToken From token\n\n /// @param _destToken To token\n\n /// @param _amount Amount to be exchanged\n\n /// @param _type Type of action SELL|BUY\n\n function getExpectedRate(\n\n address _wrapper,\n\n address _srcToken,\n\n address _destToken,\n\n uint256 _amount,\n\n ActionType _type\n\n ) public returns (uint256) {\n\n bool success;\n\n bytes memory result;\n\n\n\n if (_type == ActionType.SELL) {\n\n (success, result) = _wrapper.call(abi.encodeWithSignature(\n\n \"getSellRate(address,address,uint256)\",\n\n _srcToken,\n\n _destToken,\n\n _amount\n\n ));\n\n\n\n } else {\n\n (success, result) = _wrapper.call(abi.encodeWithSignature(\n\n \"getBuyRate(address,address,uint256)\",\n\n _srcToken,\n\n _destToken,\n\n _amount\n\n ));\n\n }\n\n\n\n if (success) {\n\n return sliceUint(result, 0);\n\n }\n\n\n\n return 0;\n\n }\n\n\n\n /// @notice Finds the biggest rate between exchanges, needed for sell rate\n\n /// @param _wrappers Array of wrappers to compare\n\n /// @param _rates Array of rates to compare\n\n function getBiggestRate(\n\n address[] memory _wrappers,\n\n uint256[] memory _rates\n\n ) internal pure returns (address, uint) {\n\n uint256 maxIndex = 0;\n\n\n\n // starting from 0 in case there is only one rate in array\n\n for (uint256 i=0; i<_rates.length; i++) {\n\n if (_rates[i] > _rates[maxIndex]) {\n\n maxIndex = i;\n\n }\n\n }\n\n\n\n return (_wrappers[maxIndex], _rates[maxIndex]);\n\n }\n\n\n\n /// @notice Finds the smallest rate between exchanges, needed for buy rate\n\n /// @param _wrappers Array of wrappers to compare\n\n /// @param _rates Array of rates to compare\n\n function getSmallestRate(\n\n address[] memory _wrappers,\n\n uint256[] memory _rates\n\n ) internal pure returns (address, uint) {\n\n uint256 minIndex = 0;\n\n\n\n // starting from 0 in case there is only one rate in array\n\n for (uint256 i=0; i<_rates.length; i++) {\n\n if ((_rates[i] < _rates[minIndex] && _rates[i] > 0) || _rates[minIndex] == 0) {\n\n minIndex = i;\n\n }\n\n }\n\n\n\n return (_wrappers[minIndex], _rates[minIndex]);\n\n }\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n function sliceUint(bytes memory bs, uint256 start) internal pure returns (uint256) {\n\n require(bs.length >= start + 32, \"slicing out of range\");\n\n\n\n uint256 x;\n\n assembly {\n\n x := mload(add(bs, add(0x20, start)))\n\n }\n\n\n\n return x;\n\n }\n\n}\n\ncontract SaverExchangeHelper {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n\n\n address payable public constant WALLET_ID = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDRESS = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n address public constant SAVER_EXCHANGE_REGISTRY = 0x25dd3F51e0C3c3Ff164DDC02A8E4D65Bb9cBB12D;\n\n\n\n address public constant ERC20_PROXY_0X = 0x95E6F48254609A6ee006F7D493c8e5fB97094ceF;\n\n address public constant ZRX_ALLOWLIST_ADDR = 0x4BA1f38427b33B8ab7Bb0490200dAE1F1C36823F;\n\n\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n function getBalance(address _tokenAddr) internal view returns (uint balance) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n balance = address(this).balance;\n\n } else {\n\n balance = ERC20(_tokenAddr).balanceOf(address(this));\n\n }\n\n }\n\n\n\n function approve0xProxy(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeApprove(address(ERC20_PROXY_0X), _amount);\n\n }\n\n }\n\n\n\n function sendLeftover(address _srcAddr, address _destAddr, address payable _to) internal {\n\n // send back any leftover ether or tokens\n\n if (address(this).balance > 0) {\n\n _to.transfer(address(this).balance);\n\n }\n\n\n\n if (getBalance(_srcAddr) > 0) {\n\n ERC20(_srcAddr).safeTransfer(_to, getBalance(_srcAddr));\n\n }\n\n\n\n if (getBalance(_destAddr) > 0) {\n\n ERC20(_destAddr).safeTransfer(_to, getBalance(_destAddr));\n\n }\n\n }\n\n\n\n function sliceUint(bytes memory bs, uint256 start) internal pure returns (uint256) {\n\n require(bs.length >= start + 32, \"slicing out of range\");\n\n\n\n uint256 x;\n\n assembly {\n\n x := mload(add(bs, add(0x20, start)))\n\n }\n\n\n\n return x;\n\n }\n\n}\n\ncontract SaverExchangeRegistry is AdminAuth {\n\n\n\n\tmapping(address => bool) private wrappers;\n\n\n\n\tconstructor() public {\n\n\t\twrappers[0x880A845A85F843a5c67DB2061623c6Fc3bB4c511] = true;\n\n\t\twrappers[0x4c9B55f2083629A1F7aDa257ae984E03096eCD25] = true;\n\n\t\twrappers[0x42A9237b872368E1bec4Ca8D26A928D7d39d338C] = true;\n\n\t}\n\n\n\n\tfunction addWrapper(address _wrapper) public onlyOwner {\n\n\t\twrappers[_wrapper] = true;\n\n\t}\n\n\n\n\tfunction removeWrapper(address _wrapper) public onlyOwner {\n\n\t\twrappers[_wrapper] = false;\n\n\t}\n\n\n\n\tfunction isWrapper(address _wrapper) public view returns(bool) {\n\n\t\treturn wrappers[_wrapper];\n\n\t}\n\n}\n\nabstract contract CEtherInterface {\n\n function mint() external virtual payable;\n\n function repayBorrow() external virtual payable;\n\n}\n\nabstract contract Cat {\n\n struct Ilk {\n\n address flip; // Liquidator\n\n uint256 chop; // Liquidation Penalty [ray]\n\n uint256 lump; // Liquidation Quantity [wad]\n\n }\n\n\n\n mapping (bytes32 => Ilk) public ilks;\n\n}\n\nabstract contract CompoundOracleInterface {\n\n function getUnderlyingPrice(address cToken) external view virtual returns (uint);\n\n}\n\nabstract contract ComptrollerInterface {\n\n function enterMarkets(address[] calldata cTokens) external virtual returns (uint256[] memory);\n\n\n\n function exitMarket(address cToken) external virtual returns (uint256);\n\n\n\n function getAssetsIn(address account) external virtual view returns (address[] memory);\n\n\n\n function markets(address account) public virtual view returns (bool, uint256);\n\n\n\n function getAccountLiquidity(address account) external virtual view returns (uint256, uint256, uint256);\n\n\n\n function claimComp(address holder) virtual public;\n\n\n\n function oracle() public virtual view returns (address);\n\n}\n\nabstract contract DSProxyInterface {\n\n\n\n /// Truffle wont compile if this isn't commented\n\n // function execute(bytes memory _code, bytes memory _data)\n\n // public virtual\n\n // payable\n\n // returns (address, bytes32);\n\n\n\n function execute(address _target, bytes memory _data) public virtual payable returns (bytes32);\n\n\n\n function setCache(address _cacheAddr) public virtual payable returns (bool);\n\n\n\n function owner() public virtual returns (address);\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint) public virtual;\n\n function transfer(address, uint) public virtual;\n\n function transferFrom(address, address, uint) public virtual;\n\n function deposit() public virtual payable;\n\n function withdraw(uint) public virtual;\n\n}\n\nabstract contract ManagerLike {\n\n function cdpCan(address, uint, address) public virtual view returns (uint);\n\n function ilks(uint) public virtual view returns (bytes32);\n\n function owns(uint) public virtual view returns (address);\n\n function urns(uint) public virtual view returns (address);\n\n function vat() public virtual view returns (address);\n\n function open(bytes32) public virtual returns (uint);\n\n function give(uint, address) public virtual;\n\n function cdpAllow(uint, address, uint) public virtual;\n\n function urnAllow(address, uint) public virtual;\n\n function frob(uint, int, int) public virtual;\n\n function frob(uint, address, int, int) public virtual;\n\n function flux(uint, address, uint) public virtual;\n\n function move(uint, address, uint) public virtual;\n\n function exit(address, uint, address, uint) public virtual;\n\n function quit(uint, address) public virtual;\n\n function enter(address, uint) public virtual;\n\n function shift(uint, uint) public virtual;\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) public virtual view returns (uint);\n\n function ilks(bytes32) public virtual view returns (uint, uint, uint, uint, uint);\n\n function dai(address) public virtual view returns (uint);\n\n function urns(bytes32, address) public virtual view returns (uint, uint);\n\n function frob(bytes32, address, address, address, int, int) public virtual;\n\n function hope(address) public virtual;\n\n function move(address, address, uint) public virtual;\n\n}\n\nabstract contract GemJoinLike {\n\n function dec() public virtual returns (uint);\n\n function gem() public virtual returns (GemLike);\n\n function join(address, uint) public virtual payable;\n\n function exit(address, uint) public virtual;\n\n}\n\nabstract contract GNTJoinLike {\n\n function bags(address) public virtual view returns (address);\n\n function make(address) public virtual returns (address);\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() public virtual returns (VatLike);\n\n function dai() public virtual returns (GemLike);\n\n function join(address, uint) public virtual payable;\n\n function exit(address, uint) public virtual;\n\n}\n\nabstract contract HopeLike {\n\n function hope(address) public virtual;\n\n function nope(address) public virtual;\n\n}\n\nabstract contract EndLike {\n\n function fix(bytes32) public virtual view returns (uint);\n\n function cash(bytes32, uint) public virtual;\n\n function free(bytes32) public virtual;\n\n function pack(uint) public virtual;\n\n function skim(bytes32, address) public virtual;\n\n}\n\nabstract contract JugLike {\n\n function drip(bytes32) public virtual;\n\n}\n\nabstract contract PotLike {\n\n function chi() public virtual view returns (uint);\n\n function pie(address) public virtual view returns (uint);\n\n function drip() public virtual;\n\n function join(uint) public virtual;\n\n function exit(uint) public virtual;\n\n}\n\nabstract contract ProxyRegistryLike {\n\n function proxies(address) public virtual view returns (address);\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract ProxyLike {\n\n function owner() public virtual view returns (address);\n\n}\n\nabstract contract DssProxyActions {\n\n function daiJoin_join(address apt, address urn, uint wad) public virtual;\n\n function transfer(address gem, address dst, uint wad) public virtual;\n\n function ethJoin_join(address apt, address urn) public virtual payable;\n\n function gemJoin_join(address apt, address urn, uint wad, bool transferFrom) public virtual payable;\n\n\n\n function hope(address obj, address usr) public virtual;\n\n function nope(address obj, address usr) public virtual;\n\n\n\n function open(address manager, bytes32 ilk, address usr) public virtual returns (uint cdp);\n\n function give(address manager, uint cdp, address usr) public virtual;\n\n function giveToProxy(address proxyRegistry, address manager, uint cdp, address dst) public virtual;\n\n\n\n function cdpAllow(address manager, uint cdp, address usr, uint ok) public virtual;\n\n function urnAllow(address manager, address usr, uint ok) public virtual;\n\n function flux(address manager, uint cdp, address dst, uint wad) public virtual;\n\n function move(address manager, uint cdp, address dst, uint rad) public virtual;\n\n function frob(address manager, uint cdp, int dink, int dart) public virtual;\n\n function frob(address manager, uint cdp, address dst, int dink, int dart) public virtual;\n\n function quit(address manager, uint cdp, address dst) public virtual;\n\n function enter(address manager, address src, uint cdp) public virtual;\n\n function shift(address manager, uint cdpSrc, uint cdpOrg) public virtual;\n\n function makeGemBag(address gemJoin) public virtual returns (address bag);\n\n\n\n function lockETH(address manager, address ethJoin, uint cdp) public virtual payable;\n\n function safeLockETH(address manager, address ethJoin, uint cdp, address owner) public virtual payable;\n\n function lockGem(address manager, address gemJoin, uint cdp, uint wad, bool transferFrom) public virtual;\n\n function safeLockGem(address manager, address gemJoin, uint cdp, uint wad, bool transferFrom, address owner) public virtual;\n\n function freeETH(address manager, address ethJoin, uint cdp, uint wad) public virtual;\n\n function freeGem(address manager, address gemJoin, uint cdp, uint wad) public virtual;\n\n function draw(address manager, address jug, address daiJoin, uint cdp, uint wad) public virtual;\n\n\n\n function wipe(address manager, address daiJoin, uint cdp, uint wad) public virtual;\n\n function safeWipe(address manager, address daiJoin, uint cdp, uint wad, address owner) public virtual;\n\n function wipeAll(address manager, address daiJoin, uint cdp) public virtual;\n\n function safeWipeAll(address manager, address daiJoin, uint cdp, address owner) public virtual;\n\n function lockETHAndDraw(address manager, address jug, address ethJoin, address daiJoin, uint cdp, uint wadD) public virtual payable;\n\n function openLockETHAndDraw(address manager, address jug, address ethJoin, address daiJoin, bytes32 ilk, uint wadD) public virtual payable returns (uint cdp);\n\n function lockGemAndDraw(address manager, address jug, address gemJoin, address daiJoin, uint cdp, uint wadC, uint wadD, bool transferFrom) public virtual;\n\n function openLockGemAndDraw(address manager, address jug, address gemJoin, address daiJoin, bytes32 ilk, uint wadC, uint wadD, bool transferFrom) public virtual returns (uint cdp);\n\n\n\n function openLockGNTAndDraw(address manager, address jug, address gntJoin, address daiJoin, bytes32 ilk, uint wadC, uint wadD) public virtual returns (address bag, uint cdp);\n\n function wipeAndFreeETH(address manager, address ethJoin, address daiJoin, uint cdp, uint wadC, uint wadD) public virtual;\n\n function wipeAllAndFreeETH(address manager, address ethJoin, address daiJoin, uint cdp, uint wadC) public virtual;\n\n function wipeAndFreeGem(address manager, address gemJoin, address daiJoin, uint cdp, uint wadC, uint wadD) public virtual;\n\n function wipeAllAndFreeGem(address manager, address gemJoin, address daiJoin, uint cdp, uint wadC) public virtual;\n\n}\n\nabstract contract DaiJoin {\n\n function vat() public virtual returns (Vat);\n\n function dai() public virtual returns (Gem);\n\n function join(address, uint) public virtual payable;\n\n function exit(address, uint) public virtual;\n\n}\n\nabstract contract DssProxyActionsDsr {\n\n function join(address daiJoin, address pot, uint wad) virtual public;\n\n function exit(address daiJoin, address pot, uint wad) virtual public;\n\n function exitAll(address daiJoin, address pot) virtual public;\n\n}\n\ninterface ERC20 {\n\n function totalSupply() external view returns (uint256 supply);\n\n\n\n function balanceOf(address _owner) external view returns (uint256 balance);\n\n\n\n function transfer(address _to, uint256 _value) external returns (bool success);\n\n\n\n function transferFrom(address _from, address _to, uint256 _value)\n\n external\n\n returns (bool success);\n\n\n\n function approve(address _spender, uint256 _value) external returns (bool success);\n\n\n\n function allowance(address _owner, address _spender) external view returns (uint256 remaining);\n\n\n\n function decimals() external view returns (uint256 digits);\n\n\n\n event Approval(address indexed _owner, address indexed _spender, uint256 _value);\n\n}\n\ninterface ExchangeInterface {\n\n function swapEtherToToken(uint256 _ethAmount, address _tokenAddress, uint256 _maxAmount)\n\n external\n\n payable\n\n returns (uint256, uint256);\n\n\n\n function swapTokenToEther(address _tokenAddress, uint256 _amount, uint256 _maxAmount)\n\n external\n\n returns (uint256);\n\n\n\n function swapTokenToToken(address _src, address _dest, uint256 _amount)\n\n external\n\n payable\n\n returns (uint256);\n\n\n\n function getExpectedRate(address src, address dest, uint256 srcQty)\n\n external\n\n view\n\n returns (uint256 expectedRate);\n\n}\n\ninterface ExchangeInterfaceV2 {\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable returns (uint);\n\n\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external payable returns(uint);\n\n\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) external view returns (uint);\n\n\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _srcAmount) external view returns (uint);\n\n}\n\nabstract contract Faucet {\n\n function gulp(address) public virtual;\n\n}\n\nabstract contract Flipper {\n\n function bids(uint _bidId) public virtual returns (uint256, uint256, address, uint48, uint48, address, address, uint256);\n\n function tend(uint id, uint lot, uint bid) virtual external;\n\n function dent(uint id, uint lot, uint bid) virtual external;\n\n function deal(uint id) virtual external;\n\n}\n\nabstract contract GasTokenInterface is ERC20 {\n\n function free(uint256 value) public virtual returns (bool success);\n\n\n\n function freeUpTo(uint256 value) public virtual returns (uint256 freed);\n\n\n\n function freeFrom(address from, uint256 value) public virtual returns (bool success);\n\n\n\n function freeFromUpTo(address from, uint256 value) public virtual returns (uint256 freed);\n\n}\n\nabstract contract Gem {\n\n function dec() virtual public returns (uint);\n\n function gem() virtual public returns (Gem);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n\n\n function approve(address, uint) virtual public;\n\n function transfer(address, uint) virtual public returns (bool);\n\n function transferFrom(address, address, uint) virtual public returns (bool);\n\n function deposit() virtual public payable;\n\n function withdraw(uint) virtual public;\n\n function allowance(address, address) virtual public returns (uint);\n\n}\n\nabstract contract GetCdps {\n\n function getCdpsAsc(address manager, address guy) external view virtual returns (uint[] memory ids, address[] memory urns, bytes32[] memory ilks);\n\n function getCdpsDesc(address manager, address guy) external view virtual returns (uint[] memory ids, address[] memory urns, bytes32[] memory ilks);\n\n}\n\nabstract contract IAToken {\n\n function redeem(uint256 _amount) external virtual;\n\n function balanceOf(address _owner) external virtual view returns (uint256 balance);\n\n}\n\nabstract contract IAaveSubscription {\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) public virtual;\n\n function unsubscribe() public virtual;\n\n}\n\nabstract contract ICompoundSubscription {\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) public virtual;\n\n function unsubscribe() public virtual;\n\n}\n\nabstract contract ILendingPool {\n\n function flashLoan( address payable _receiver, address _reserve, uint _amount, bytes calldata _params) external virtual;\n\n function deposit(address _reserve, uint256 _amount, uint16 _referralCode) external virtual payable;\n\n\tfunction setUserUseReserveAsCollateral(address _reserve, bool _useAsCollateral) external virtual;\n\n\tfunction borrow(address _reserve, uint256 _amount, uint256 _interestRateMode, uint16 _referralCode) external virtual;\n\n\tfunction repay( address _reserve, uint256 _amount, address payable _onBehalfOf) external virtual payable;\n\n\tfunction swapBorrowRateMode(address _reserve) external virtual;\n\n function getReserves() external virtual view returns(address[] memory);\n\n\n\n /// @param _reserve underlying token address\n\n function getReserveData(address _reserve)\n\n external virtual\n\n view\n\n returns (\n\n uint256 totalLiquidity, // reserve total liquidity\n\n uint256 availableLiquidity, // reserve available liquidity for borrowing\n\n uint256 totalBorrowsStable, // total amount of outstanding borrows at Stable rate\n\n uint256 totalBorrowsVariable, // total amount of outstanding borrows at Variable rate\n\n uint256 liquidityRate, // current deposit APY of the reserve for depositors, in Ray units.\n\n uint256 variableBorrowRate, // current variable rate APY of the reserve pool, in Ray units.\n\n uint256 stableBorrowRate, // current stable rate APY of the reserve pool, in Ray units.\n\n uint256 averageStableBorrowRate, // current average stable borrow rate\n\n uint256 utilizationRate, // expressed as total borrows/total liquidity.\n\n uint256 liquidityIndex, // cumulative liquidity index\n\n uint256 variableBorrowIndex, // cumulative variable borrow index\n\n address aTokenAddress, // aTokens contract address for the specific _reserve\n\n uint40 lastUpdateTimestamp // timestamp of the last update of reserve data\n\n );\n\n\n\n /// @param _user users address\n\n function getUserAccountData(address _user)\n\n external virtual\n\n view\n\n returns (\n\n uint256 totalLiquidityETH, // user aggregated deposits across all the reserves. In Wei\n\n uint256 totalCollateralETH, // user aggregated collateral across all the reserves. In Wei\n\n uint256 totalBorrowsETH, // user aggregated outstanding borrows across all the reserves. In Wei\n\n uint256 totalFeesETH, // user aggregated current outstanding fees in ETH. In Wei\n\n uint256 availableBorrowsETH, // user available amount to borrow in ETH\n\n uint256 currentLiquidationThreshold, // user current average liquidation threshold across all the collaterals deposited\n\n uint256 ltv, // user average Loan-to-Value between all the collaterals\n\n uint256 healthFactor // user current Health Factor\n\n ); \n\n\n\n /// @param _reserve underlying token address\n\n /// @param _user users address\n\n function getUserReserveData(address _reserve, address _user)\n\n external virtual\n\n view\n\n returns (\n\n uint256 currentATokenBalance, // user current reserve aToken balance\n\n uint256 currentBorrowBalance, // user current reserve outstanding borrow balance\n\n uint256 principalBorrowBalance, // user balance of borrowed asset\n\n uint256 borrowRateMode, // user borrow rate mode either Stable or Variable\n\n uint256 borrowRate, // user current borrow rate APY\n\n uint256 liquidityRate, // user current earn rate on _reserve\n\n uint256 originationFee, // user outstanding loan origination fee\n\n uint256 variableBorrowIndex, // user variable cumulative index\n\n uint256 lastUpdateTimestamp, // Timestamp of the last data update\n\n bool usageAsCollateralEnabled // Whether the user's current reserve is enabled as a collateral\n\n );\n\n\n\n function getReserveConfigurationData(address _reserve)\n\n external virtual\n\n view\n\n returns (\n\n uint256 ltv,\n\n uint256 liquidationThreshold,\n\n uint256 liquidationBonus,\n\n address rateStrategyAddress,\n\n bool usageAsCollateralEnabled,\n\n bool borrowingEnabled,\n\n bool stableBorrowRateEnabled,\n\n bool isActive\n\n );\n\n\n\n // ------------------ LendingPoolCoreData ------------------------\n\n function getReserveATokenAddress(address _reserve) public virtual view returns (address);\n\n function getReserveConfiguration(address _reserve)\n\n external virtual\n\n view\n\n returns (uint256, uint256, uint256, bool);\n\n function getUserUnderlyingAssetBalance(address _reserve, address _user)\n\n public virtual\n\n view\n\n returns (uint256);\n\n\n\n function getReserveCurrentLiquidityRate(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveCurrentVariableBorrowRate(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveCurrentStableBorrowRate(address _reserve) \n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveTotalLiquidity(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveAvailableLiquidity(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveTotalBorrowsVariable(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n\n\n // ---------------- LendingPoolDataProvider ---------------------\n\n function calculateUserGlobalData(address _user)\n\n public virtual\n\n view\n\n returns (\n\n uint256 totalLiquidityBalanceETH,\n\n uint256 totalCollateralBalanceETH,\n\n uint256 totalBorrowBalanceETH,\n\n uint256 totalFeesETH,\n\n uint256 currentLtv,\n\n uint256 currentLiquidationThreshold,\n\n uint256 healthFactor,\n\n bool healthFactorBelowThreshold\n\n );\n\n}\n\nabstract contract ILendingPoolAddressesProvider {\n\n\n\n function getLendingPool() public virtual view returns (address);\n\n function getLendingPoolCore() public virtual view returns (address payable);\n\n function getLendingPoolConfigurator() public virtual view returns (address);\n\n function getLendingPoolDataProvider() public virtual view returns (address);\n\n function getLendingPoolParametersProvider() public virtual view returns (address);\n\n function getTokenDistributor() public virtual view returns (address);\n\n function getFeeProvider() public virtual view returns (address);\n\n function getLendingPoolLiquidationManager() public virtual view returns (address);\n\n function getLendingPoolManager() public virtual view returns (address);\n\n function getPriceOracle() public virtual view returns (address);\n\n function getLendingRateOracle() public virtual view returns (address);\n\n}\n\nabstract contract ILoanShifter {\n\n function getLoanAmount(uint, address) public virtual returns (uint);\n\n function getUnderlyingAsset(address _addr) public view virtual returns (address);\n\n}\n\nabstract contract IPriceOracleGetterAave {\n\n function getAssetPrice(address _asset) external virtual view returns (uint256);\n\n function getAssetsPrices(address[] calldata _assets) external virtual view returns(uint256[] memory);\n\n function getSourceOfAsset(address _asset) external virtual view returns(address);\n\n function getFallbackOracle() external virtual view returns(address);\n\n}\n\nabstract contract ITokenInterface is ERC20 {\n\n function assetBalanceOf(address _owner) public virtual view returns (uint256);\n\n\n\n function mint(address receiver, uint256 depositAmount) external virtual returns (uint256 mintAmount);\n\n\n\n function burn(address receiver, uint256 burnAmount) external virtual returns (uint256 loanAmountPaid);\n\n\n\n function tokenPrice() public virtual view returns (uint256 price);\n\n}\n\nabstract contract Join {\n\n bytes32 public ilk;\n\n\n\n function dec() virtual public view returns (uint);\n\n function gem() virtual public view returns (Gem);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\nabstract contract Jug {\n\n struct Ilk {\n\n uint256 duty;\n\n uint256 rho;\n\n }\n\n\n\n mapping (bytes32 => Ilk) public ilks;\n\n\n\n function drip(bytes32) public virtual returns (uint);\n\n}\n\nabstract contract KyberNetworkProxyInterface {\n\n function maxGasPrice() external virtual view returns (uint256);\n\n\n\n function getUserCapInWei(address user) external virtual view returns (uint256);\n\n\n\n function getUserCapInTokenWei(address user, ERC20 token) external virtual view returns (uint256);\n\n\n\n function enabled() external virtual view returns (bool);\n\n\n\n function info(bytes32 id) external virtual view returns (uint256);\n\n\n\n function getExpectedRate(ERC20 src, ERC20 dest, uint256 srcQty)\n\n public virtual\n\n view\n\n returns (uint256 expectedRate, uint256 slippageRate);\n\n\n\n function tradeWithHint(\n\n ERC20 src,\n\n uint256 srcAmount,\n\n ERC20 dest,\n\n address destAddress,\n\n uint256 maxDestAmount,\n\n uint256 minConversionRate,\n\n address walletId,\n\n bytes memory hint\n\n ) public virtual payable returns (uint256);\n\n\n\n function trade(\n\n ERC20 src,\n\n uint256 srcAmount,\n\n ERC20 dest,\n\n address destAddress,\n\n uint256 maxDestAmount,\n\n uint256 minConversionRate,\n\n address walletId\n\n ) public virtual payable returns (uint256);\n\n\n\n function swapEtherToToken(ERC20 token, uint256 minConversionRate)\n\n external virtual\n\n payable\n\n returns (uint256);\n\n\n\n function swapTokenToEther(ERC20 token, uint256 tokenQty, uint256 minRate)\n\n external virtual\n\n payable\n\n returns (uint256);\n\n\n\n function swapTokenToToken(ERC20 src, uint256 srcAmount, ERC20 dest, uint256 minConversionRate)\n\n public virtual\n\n returns (uint256);\n\n}\n\nabstract contract Manager {\n\n function last(address) virtual public returns (uint);\n\n function cdpCan(address, uint, address) virtual public view returns (uint);\n\n function ilks(uint) virtual public view returns (bytes32);\n\n function owns(uint) virtual public view returns (address);\n\n function urns(uint) virtual public view returns (address);\n\n function vat() virtual public view returns (address);\n\n function open(bytes32, address) virtual public returns (uint);\n\n function give(uint, address) virtual public;\n\n function cdpAllow(uint, address, uint) virtual public;\n\n function urnAllow(address, uint) virtual public;\n\n function frob(uint, int, int) virtual public;\n\n function flux(uint, address, uint) virtual public;\n\n function move(uint, address, uint) virtual public;\n\n function exit(address, uint, address, uint) virtual public;\n\n function quit(uint, address) virtual public;\n\n function enter(address, uint) virtual public;\n\n function shift(uint, uint) virtual public;\n\n}\n\nabstract contract OasisInterface {\n\n function getBuyAmount(address tokenToBuy, address tokenToPay, uint256 amountToPay)\n\n external\n\n virtual\n\n view\n\n returns (uint256 amountBought);\n\n\n\n function getPayAmount(address tokenToPay, address tokenToBuy, uint256 amountToBuy)\n\n public virtual\n\n view\n\n returns (uint256 amountPaid);\n\n\n\n function sellAllAmount(address pay_gem, uint256 pay_amt, address buy_gem, uint256 min_fill_amount)\n\n public virtual\n\n returns (uint256 fill_amt);\n\n\n\n function buyAllAmount(address buy_gem, uint256 buy_amt, address pay_gem, uint256 max_fill_amount)\n\n public virtual\n\n returns (uint256 fill_amt);\n\n}\n\nabstract contract Osm {\n\n mapping(address => uint256) public bud;\n\n\n\n function peep() external view virtual returns (bytes32, bool);\n\n}\n\nabstract contract OsmMom {\n\n mapping (bytes32 => address) public osms;\n\n}\n\nabstract contract OtcInterface {\n\n function buyAllAmount(address, uint256, address, uint256) public virtual returns (uint256);\n\n\n\n function getPayAmount(address, address, uint256) public virtual view returns (uint256);\n\n\n\n function getBuyAmount(address, address, uint256) public virtual view returns (uint256);\n\n}\n\nabstract contract PipInterface {\n\n function read() public virtual returns (bytes32);\n\n}\n\nabstract contract ProxyRegistryInterface {\n\n function proxies(address _owner) public virtual view returns (address);\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract SaverExchangeInterface {\n\n function getBestPrice(\n\n uint256 _amount,\n\n address _srcToken,\n\n address _destToken,\n\n uint256 _exchangeType\n\n ) public view virtual returns (address, uint256);\n\n}\n\nabstract contract Spotter {\n\n struct Ilk {\n\n PipInterface pip;\n\n uint256 mat;\n\n }\n\n\n\n mapping (bytes32 => Ilk) public ilks;\n\n\n\n uint256 public par;\n\n\n\n}\n\nabstract contract TokenInterface {\n\n function allowance(address, address) public virtual returns (uint256);\n\n\n\n function balanceOf(address) public virtual returns (uint256);\n\n\n\n function approve(address, uint256) public virtual;\n\n\n\n function transfer(address, uint256) public virtual returns (bool);\n\n\n\n function transferFrom(address, address, uint256) public virtual returns (bool);\n\n\n\n function deposit() public virtual payable;\n\n\n\n function withdraw(uint256) public virtual;\n\n}\n\nabstract contract UniswapExchangeInterface {\n\n function getEthToTokenInputPrice(uint256 eth_sold)\n\n external virtual\n\n view\n\n returns (uint256 tokens_bought);\n\n\n\n function getEthToTokenOutputPrice(uint256 tokens_bought)\n\n external virtual\n\n view\n\n returns (uint256 eth_sold);\n\n\n\n function getTokenToEthInputPrice(uint256 tokens_sold)\n\n external virtual\n\n view\n\n returns (uint256 eth_bought);\n\n\n\n function getTokenToEthOutputPrice(uint256 eth_bought)\n\n external virtual\n\n view\n\n returns (uint256 tokens_sold);\n\n\n\n function tokenToEthTransferInput(\n\n uint256 tokens_sold,\n\n uint256 min_eth,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual returns (uint256 eth_bought);\n\n\n\n function ethToTokenTransferInput(uint256 min_tokens, uint256 deadline, address recipient)\n\n external virtual\n\n payable\n\n returns (uint256 tokens_bought);\n\n\n\n function tokenToTokenTransferInput(\n\n uint256 tokens_sold,\n\n uint256 min_tokens_bought,\n\n uint256 min_eth_bought,\n\n uint256 deadline,\n\n address recipient,\n\n address token_addr\n\n ) external virtual returns (uint256 tokens_bought);\n\n\n\n function ethToTokenTransferOutput(\n\n uint256 tokens_bought,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual payable returns (uint256 eth_sold);\n\n\n\n function tokenToEthTransferOutput(\n\n uint256 eth_bought,\n\n uint256 max_tokens,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual returns (uint256 tokens_sold);\n\n\n\n function tokenToTokenTransferOutput(\n\n uint256 tokens_bought,\n\n uint256 max_tokens_sold,\n\n uint256 max_eth_sold,\n\n uint256 deadline,\n\n address recipient,\n\n address token_addr\n\n ) external virtual returns (uint256 tokens_sold);\n\n\n\n}\n\nabstract contract UniswapFactoryInterface {\n\n function getExchange(address token) external view virtual returns (address exchange);\n\n}\n\nabstract contract UniswapRouterInterface {\n\n function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)\n\n external\n\n virtual\n\n returns (uint[] memory amounts);\n\n\n\n function swapExactTokensForTokens(\n\n uint amountIn,\n\n uint amountOutMin,\n\n address[] calldata path,\n\n address to,\n\n uint deadline\n\n ) external virtual returns (uint[] memory amounts);\n\n\n\n function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)\n\n external virtual\n\n returns (uint[] memory amounts);\n\n\n\n function swapTokensForExactTokens(\n\n uint amountOut,\n\n uint amountInMax,\n\n address[] calldata path,\n\n address to,\n\n uint deadline\n\n ) external virtual returns (uint[] memory amounts);\n\n\n\n function getAmountsOut(uint amountIn, address[] memory path) public virtual view returns (uint[] memory amounts);\n\n\n\n function getAmountsIn(uint amountOut, address[] memory path) public virtual view returns (uint[] memory amounts);\n\n}\n\nabstract contract Vat {\n\n\n\n struct Urn {\n\n uint256 ink; // Locked Collateral [wad]\n\n uint256 art; // Normalised Debt [wad]\n\n }\n\n\n\n struct Ilk {\n\n uint256 Art; // Total Normalised Debt [wad]\n\n uint256 rate; // Accumulated Rates [ray]\n\n uint256 spot; // Price with Safety Margin [ray]\n\n uint256 line; // Debt Ceiling [rad]\n\n uint256 dust; // Urn Debt Floor [rad]\n\n }\n\n\n\n mapping (bytes32 => mapping (address => Urn )) public urns;\n\n mapping (bytes32 => Ilk) public ilks;\n\n mapping (bytes32 => mapping (address => uint)) public gem; // [wad]\n\n\n\n function can(address, address) virtual public view returns (uint);\n\n function dai(address) virtual public view returns (uint);\n\n function frob(bytes32, address, address, address, int, int) virtual public;\n\n function hope(address) virtual public;\n\n function move(address, address, uint) virtual public;\n\n function fork(bytes32, address, address, int, int) virtual public;\n\n}\n\ncontract DefisaverLogger {\n\n event LogEvent(\n\n address indexed contractAddress,\n\n address indexed caller,\n\n string indexed logName,\n\n bytes data\n\n );\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function Log(address _contract, address _caller, string memory _logName, bytes memory _data)\n\n public\n\n {\n\n emit LogEvent(_contract, _caller, _logName, _data);\n\n }\n\n}\n\ncontract MCDMonitorProxyV2 is AdminAuth {\n\n\n\n uint public CHANGE_PERIOD;\n\n address public monitor;\n\n address public newMonitor;\n\n address public lastMonitor;\n\n uint public changeRequestedTimestamp;\n\n\n\n mapping(address => bool) public allowed;\n\n\n\n event MonitorChangeInitiated(address oldMonitor, address newMonitor);\n\n event MonitorChangeCanceled();\n\n event MonitorChangeFinished(address monitor);\n\n event MonitorChangeReverted(address monitor);\n\n\n\n // if someone who is allowed become malicious, owner can't be changed\n\n modifier onlyAllowed() {\n\n require(allowed[msg.sender] || msg.sender == owner);\n\n _;\n\n }\n\n\n\n modifier onlyMonitor() {\n\n require (msg.sender == monitor);\n\n _;\n\n }\n\n\n\n constructor(uint _changePeriod) public {\n\n CHANGE_PERIOD = _changePeriod * 1 days;\n\n }\n\n\n\n /// @notice Only monitor contract is able to call execute on users proxy\n\n /// @param _owner Address of cdp owner (users DSProxy address)\n\n /// @param _saverProxy Address of MCDSaverProxy\n\n /// @param _data Data to send to MCDSaverProxy\n\n function callExecute(address _owner, address _saverProxy, bytes memory _data) public payable onlyMonitor {\n\n // execute reverts if calling specific method fails\n\n DSProxyInterface(_owner).execute{value: msg.value}(_saverProxy, _data);\n\n\n\n // return if anything left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Allowed users are able to set Monitor contract without any waiting period first time\n\n /// @param _monitor Address of Monitor contract\n\n function setMonitor(address _monitor) public onlyAllowed {\n\n require(monitor == address(0));\n\n monitor = _monitor;\n\n }\n\n\n\n /// @notice Allowed users are able to start procedure for changing monitor\n\n /// @dev after CHANGE_PERIOD needs to call confirmNewMonitor to actually make a change\n\n /// @param _newMonitor address of new monitor\n\n function changeMonitor(address _newMonitor) public onlyAllowed {\n\n require(changeRequestedTimestamp == 0);\n\n\n\n changeRequestedTimestamp = now;\n\n lastMonitor = monitor;\n\n newMonitor = _newMonitor;\n\n\n\n emit MonitorChangeInitiated(lastMonitor, newMonitor);\n\n }\n\n\n\n /// @notice At any point allowed users are able to cancel monitor change\n\n function cancelMonitorChange() public onlyAllowed {\n\n require(changeRequestedTimestamp > 0);\n\n\n\n changeRequestedTimestamp = 0;\n\n newMonitor = address(0);\n\n\n\n emit MonitorChangeCanceled();\n\n }\n\n\n\n /// @notice Anyone is able to confirm new monitor after CHANGE_PERIOD if process is started\n\n function confirmNewMonitor() public onlyAllowed {\n\n require((changeRequestedTimestamp + CHANGE_PERIOD) < now);\n\n require(changeRequestedTimestamp != 0);\n\n require(newMonitor != address(0));\n\n\n\n monitor = newMonitor;\n\n newMonitor = address(0);\n\n changeRequestedTimestamp = 0;\n\n\n\n emit MonitorChangeFinished(monitor);\n\n }\n\n\n\n /// @notice Its possible to revert monitor to last used monitor\n\n function revertMonitor() public onlyAllowed {\n\n require(lastMonitor != address(0));\n\n\n\n monitor = lastMonitor;\n\n\n\n emit MonitorChangeReverted(monitor);\n\n }\n\n\n\n\n\n /// @notice Allowed users are able to add new allowed user\n\n /// @param _user Address of user that will be allowed\n\n function addAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = true;\n\n }\n\n\n\n /// @notice Allowed users are able to remove allowed user\n\n /// @dev owner is always allowed even if someone tries to remove it from allowed mapping\n\n /// @param _user Address of allowed user\n\n function removeAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = false;\n\n }\n\n\n\n function setChangePeriod(uint _periodInDays) public onlyAllowed {\n\n require(_periodInDays * 1 days > CHANGE_PERIOD);\n\n\n\n CHANGE_PERIOD = _periodInDays * 1 days;\n\n }\n\n\n\n}\n\ncontract MCDPriceVerifier is AdminAuth {\n\n\n\n OsmMom public osmMom = OsmMom(0x76416A4d5190d071bfed309861527431304aA14f);\n\n Manager public manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n mapping(address => bool) public authorized;\n\n\n\n function verifyVaultNextPrice(uint _nextPrice, uint _cdpId) public view returns(bool) {\n\n require(authorized[msg.sender]);\n\n\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n return verifyNextPrice(_nextPrice, ilk);\n\n }\n\n\n\n function verifyNextPrice(uint _nextPrice, bytes32 _ilk) public view returns(bool) {\n\n require(authorized[msg.sender]);\n\n\n\n address osmAddress = osmMom.osms(_ilk);\n\n\n\n uint whitelisted = Osm(osmAddress).bud(address(this));\n\n // If contracts doesn't have access return true\n\n if (whitelisted != 1) return true;\n\n\n\n (bytes32 price, bool has) = Osm(osmAddress).peep();\n\n\n\n return has ? uint(price) == _nextPrice : false;\n\n }\n\n\n\n function setAuthorized(address _address, bool _allowed) public onlyOwner {\n\n authorized[_address] = _allowed;\n\n }\n\n}\n\nabstract contract StaticV2 {\n\n\n\n enum Method { Boost, Repay }\n\n\n\n struct CdpHolder {\n\n uint128 minRatio;\n\n uint128 maxRatio;\n\n uint128 optimalRatioBoost;\n\n uint128 optimalRatioRepay;\n\n address owner;\n\n uint cdpId;\n\n bool boostEnabled;\n\n bool nextPriceEnabled;\n\n }\n\n\n\n struct SubPosition {\n\n uint arrPos;\n\n bool subscribed;\n\n }\n\n}\n\ncontract SubscriptionsInterfaceV2 {\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled, bool _nextPriceEnabled) external {}\n\n function unsubscribe(uint _cdpId) external {}\n\n}\n\ncontract SubscriptionsProxyV2 {\n\n\n\n address public constant MONITOR_PROXY_ADDRESS = 0x7456f4218874eAe1aF8B83a64848A1B89fEB7d7C;\n\n address public constant OLD_SUBSCRIPTION = 0x83152CAA0d344a2Fd428769529e2d490A88f4393;\n\n address public constant FACTORY_ADDRESS = 0x5a15566417e6C1c9546523066500bDDBc53F88C7;\n\n\n\n function migrate(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(OLD_SUBSCRIPTION).unsubscribe(_cdpId);\n\n\n\n subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled, _subscriptions);\n\n }\n\n\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n\n\n address currAuthority = address(DSAuth(address(this)).authority());\n\n DSGuard guard = DSGuard(currAuthority);\n\n\n\n if (currAuthority == address(0)) {\n\n guard = DSGuardFactory(FACTORY_ADDRESS).newGuard();\n\n DSAuth(address(this)).setAuthority(DSAuthority(address(guard)));\n\n }\n\n\n\n guard.permit(MONITOR_PROXY_ADDRESS, address(this), bytes4(keccak256(\"execute(address,bytes)\")));\n\n\n\n SubscriptionsInterfaceV2(_subscriptions).subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled);\n\n }\n\n\n\n function update(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(_subscriptions).subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled);\n\n }\n\n\n\n function unsubscribe(uint _cdpId, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(_subscriptions).unsubscribe(_cdpId);\n\n }\n\n}\n\ncontract SubscriptionsV2 is AdminAuth, StaticV2 {\n\n\n\n bytes32 internal constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n bytes32 internal constant BAT_ILK = 0x4241542d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n\n\n CdpHolder[] public subscribers;\n\n mapping (uint => SubPosition) public subscribersPos;\n\n\n\n mapping (bytes32 => uint) public minLimits;\n\n\n\n uint public changeIndex;\n\n\n\n Manager public manager = Manager(MANAGER_ADDRESS);\n\n Vat public vat = Vat(VAT_ADDRESS);\n\n Spotter public spotter = Spotter(SPOTTER_ADDRESS);\n\n MCDSaverProxy public saverProxy;\n\n\n\n event Subscribed(address indexed owner, uint cdpId);\n\n event Unsubscribed(address indexed owner, uint cdpId);\n\n event Updated(address indexed owner, uint cdpId);\n\n event ParamUpdates(address indexed owner, uint cdpId, uint128, uint128, uint128, uint128, bool boostEnabled);\n\n\n\n /// @param _saverProxy Address of the MCDSaverProxy contract\n\n constructor(address _saverProxy) public {\n\n saverProxy = MCDSaverProxy(payable(_saverProxy));\n\n\n\n minLimits[ETH_ILK] = 1700000000000000000;\n\n minLimits[BAT_ILK] = 1700000000000000000;\n\n }\n\n\n\n /// @dev Called by the DSProxy contract which owns the CDP\n\n /// @notice Adds the users CDP in the list of subscriptions so it can be monitored\n\n /// @param _cdpId Id of the CDP\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalBoost Ratio amount which boost should target\n\n /// @param _optimalRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n /// @param _nextPriceEnabled Boolean determing if we can use nextPrice for this cdp\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled, bool _nextPriceEnabled) external {\n\n require(isOwner(msg.sender, _cdpId), \"Must be called by Cdp owner\");\n\n\n\n // if boost is not enabled, set max ratio to max uint\n\n uint128 localMaxRatio = _boostEnabled ? _maxRatio : uint128(-1);\n\n require(checkParams(manager.ilks(_cdpId), _minRatio, localMaxRatio), \"Must be correct params\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n CdpHolder memory subscription = CdpHolder({\n\n minRatio: _minRatio,\n\n maxRatio: localMaxRatio,\n\n optimalRatioBoost: _optimalBoost,\n\n optimalRatioRepay: _optimalRepay,\n\n owner: msg.sender,\n\n cdpId: _cdpId,\n\n boostEnabled: _boostEnabled,\n\n nextPriceEnabled: _nextPriceEnabled\n\n });\n\n\n\n changeIndex++;\n\n\n\n if (subInfo.subscribed) {\n\n subscribers[subInfo.arrPos] = subscription;\n\n\n\n emit Updated(msg.sender, _cdpId);\n\n emit ParamUpdates(msg.sender, _cdpId, _minRatio, localMaxRatio, _optimalBoost, _optimalRepay, _boostEnabled);\n\n } else {\n\n subscribers.push(subscription);\n\n\n\n subInfo.arrPos = subscribers.length - 1;\n\n subInfo.subscribed = true;\n\n\n\n emit Subscribed(msg.sender, _cdpId);\n\n }\n\n }\n\n\n\n /// @notice Called by the users DSProxy\n\n /// @dev Owner who subscribed cancels his subscription\n\n function unsubscribe(uint _cdpId) external {\n\n require(isOwner(msg.sender, _cdpId), \"Must be called by Cdp owner\");\n\n\n\n _unsubscribe(_cdpId);\n\n }\n\n\n\n /// @dev Checks if the _owner is the owner of the CDP\n\n function isOwner(address _owner, uint _cdpId) internal view returns (bool) {\n\n return getOwner(_cdpId) == _owner;\n\n }\n\n\n\n /// @dev Checks limit for minimum ratio and if minRatio is bigger than max\n\n function checkParams(bytes32 _ilk, uint128 _minRatio, uint128 _maxRatio) internal view returns (bool) {\n\n if (_minRatio < minLimits[_ilk]) {\n\n return false;\n\n }\n\n\n\n if (_minRatio > _maxRatio) {\n\n return false;\n\n }\n\n\n\n return true;\n\n }\n\n\n\n /// @dev Internal method to remove a subscriber from the list\n\n function _unsubscribe(uint _cdpId) internal {\n\n require(subscribers.length > 0, \"Must have subscribers in the list\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n require(subInfo.subscribed, \"Must first be subscribed\");\n\n\n\n uint lastCdpId = subscribers[subscribers.length - 1].cdpId;\n\n\n\n SubPosition storage subInfo2 = subscribersPos[lastCdpId];\n\n subInfo2.arrPos = subInfo.arrPos;\n\n\n\n subscribers[subInfo.arrPos] = subscribers[subscribers.length - 1];\n\n subscribers.pop();\n\n\n\n changeIndex++;\n\n subInfo.subscribed = false;\n\n subInfo.arrPos = 0;\n\n\n\n emit Unsubscribed(msg.sender, _cdpId);\n\n }\n\n\n\n /// @notice Returns an address that owns the CDP\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(uint _cdpId) public view returns(address) {\n\n return manager.owns(_cdpId);\n\n }\n\n\n\n /// @notice Helper method for the front to get all the info about the subscribed CDP\n\n function getSubscribedInfo(uint _cdpId) public view returns(bool, uint128, uint128, uint128, uint128, address, uint coll, uint debt) {\n\n SubPosition memory subInfo = subscribersPos[_cdpId];\n\n\n\n if (!subInfo.subscribed) return (false, 0, 0, 0, 0, address(0), 0, 0);\n\n\n\n (coll, debt) = saverProxy.getCdpInfo(manager, _cdpId, manager.ilks(_cdpId));\n\n\n\n CdpHolder memory subscriber = subscribers[subInfo.arrPos];\n\n\n\n return (\n\n true,\n\n subscriber.minRatio,\n\n subscriber.maxRatio,\n\n subscriber.optimalRatioRepay,\n\n subscriber.optimalRatioBoost,\n\n subscriber.owner,\n\n coll,\n\n debt\n\n );\n\n }\n\n\n\n function getCdpHolder(uint _cdpId) public view returns (bool subscribed, CdpHolder memory) {\n\n SubPosition memory subInfo = subscribersPos[_cdpId];\n\n\n\n if (!subInfo.subscribed) return (false, CdpHolder(0, 0, 0, 0, address(0), 0, false, false));\n\n\n\n CdpHolder memory subscriber = subscribers[subInfo.arrPos];\n\n\n\n return (true, subscriber);\n\n }\n\n\n\n /// @notice Helper method for the front to get the information about the ilk of a CDP\n\n function getIlkInfo(bytes32 _ilk, uint _cdpId) public view returns(bytes32 ilk, uint art, uint rate, uint spot, uint line, uint dust, uint mat, uint par) {\n\n // send either ilk or cdpId\n\n if (_ilk == bytes32(0)) {\n\n _ilk = manager.ilks(_cdpId);\n\n }\n\n\n\n ilk = _ilk;\n\n (,mat) = spotter.ilks(_ilk);\n\n par = spotter.par();\n\n (art, rate, spot, line, dust) = vat.ilks(_ilk);\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n function getSubscribers() public view returns (CdpHolder[] memory) {\n\n return subscribers;\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n function getSubscribersByPage(uint _page, uint _perPage) public view returns (CdpHolder[] memory) {\n\n CdpHolder[] memory holders = new CdpHolder[](_perPage);\n\n\n\n uint start = _page * _perPage;\n\n uint end = start + _perPage;\n\n\n\n uint count = 0;\n\n for (uint i=start; i<end; i++) {\n\n holders[count] = subscribers[i];\n\n count++;\n\n }\n\n\n\n return holders;\n\n }\n\n\n\n ////////////// ADMIN METHODS ///////////////////\n\n\n\n /// @notice Admin function to change a min. limit for an asset\n\n function changeMinRatios(bytes32 _ilk, uint _newRatio) public onlyOwner {\n\n minLimits[_ilk] = _newRatio;\n\n }\n\n\n\n /// @notice Admin function to unsubscribe a CDP\n\n function unsubscribeByAdmin(uint _cdpId) public onlyOwner {\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n if (subInfo.subscribed) {\n\n _unsubscribe(_cdpId);\n\n }\n\n }\n\n}\n\ncontract BidProxy {\n\n\n\n address public constant DAI_JOIN = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n function daiBid(uint _bidId, uint _amount, address _flipper) public {\n\n uint tendAmount = _amount * (10 ** 27);\n\n\n\n joinDai(_amount);\n\n\n\n (, uint lot, , , , , , ) = Flipper(_flipper).bids(_bidId);\n\n\n\n Vat(VAT_ADDRESS).hope(_flipper);\n\n\n\n Flipper(_flipper).tend(_bidId, lot, tendAmount);\n\n }\n\n\n\n function collateralBid(uint _bidId, uint _amount, address _flipper) public {\n\n (uint bid, , , , , , , ) = Flipper(_flipper).bids(_bidId);\n\n\n\n joinDai(bid / (10**27));\n\n\n\n Vat(VAT_ADDRESS).hope(_flipper);\n\n\n\n Flipper(_flipper).dent(_bidId, _amount, bid);\n\n }\n\n\n\n function closeBid(uint _bidId, address _flipper, address _joinAddr) public {\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n Flipper(_flipper).deal(_bidId);\n\n uint amount = Vat(VAT_ADDRESS).gem(ilk, address(this));\n\n\n\n Vat(VAT_ADDRESS).hope(_joinAddr);\n\n Gem(_joinAddr).exit(msg.sender, amount);\n\n }\n\n\n\n function exitCollateral(address _joinAddr) public {\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n uint amount = Vat(VAT_ADDRESS).gem(ilk, address(this));\n\n\n\n Vat(VAT_ADDRESS).hope(_joinAddr);\n\n Gem(_joinAddr).exit(msg.sender, amount);\n\n }\n\n\n\n function exitDai() public {\n\n uint amount = Vat(VAT_ADDRESS).dai(address(this)) / (10**27);\n\n\n\n Vat(VAT_ADDRESS).hope(DAI_JOIN);\n\n Gem(DAI_JOIN).exit(msg.sender, amount);\n\n }\n\n\n\n function withdrawToken(address _token) public {\n\n uint balance = ERC20(_token).balanceOf(address(this));\n\n ERC20(_token).transfer(msg.sender, balance);\n\n }\n\n\n\n function withdrawEth() public {\n\n uint balance = address(this).balance;\n\n msg.sender.transfer(balance);\n\n }\n\n\n\n function joinDai(uint _amount) internal {\n\n uint amountInVat = Vat(VAT_ADDRESS).dai(address(this)) / (10**27);\n\n\n\n if (_amount > amountInVat) {\n\n uint amountDiff = (_amount - amountInVat) + 1;\n\n\n\n ERC20(DAI_ADDRESS).transferFrom(msg.sender, address(this), amountDiff);\n\n ERC20(DAI_ADDRESS).approve(DAI_JOIN, amountDiff);\n\n Join(DAI_JOIN).join(address(this), amountDiff);\n\n }\n\n }\n\n}\n\nabstract contract IMCDSubscriptions {\n\n function unsubscribe(uint256 _cdpId) external virtual ;\n\n\n\n function subscribersPos(uint256 _cdpId) external virtual returns (uint256, bool);\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint256) public virtual;\n\n\n\n function transfer(address, uint256) public virtual;\n\n\n\n function transferFrom(address, address, uint256) public virtual;\n\n\n\n function deposit() public virtual payable;\n\n\n\n function withdraw(uint256) public virtual;\n\n}\n\nabstract contract ManagerLike {\n\n function cdpCan(address, uint256, address) public virtual view returns (uint256);\n\n\n\n function ilks(uint256) public virtual view returns (bytes32);\n\n\n\n function owns(uint256) public virtual view returns (address);\n\n\n\n function urns(uint256) public virtual view returns (address);\n\n\n\n function vat() public virtual view returns (address);\n\n\n\n function open(bytes32, address) public virtual returns (uint256);\n\n\n\n function give(uint256, address) public virtual;\n\n\n\n function cdpAllow(uint256, address, uint256) public virtual;\n\n\n\n function urnAllow(address, uint256) public virtual;\n\n\n\n function frob(uint256, int256, int256) public virtual;\n\n\n\n function flux(uint256, address, uint256) public virtual;\n\n\n\n function move(uint256, address, uint256) public virtual;\n\n\n\n function exit(address, uint256, address, uint256) public virtual;\n\n\n\n function quit(uint256, address) public virtual;\n\n\n\n function enter(address, uint256) public virtual;\n\n\n\n function shift(uint256, uint256) public virtual;\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) public virtual view returns (uint256);\n\n\n\n function ilks(bytes32) public virtual view returns (uint256, uint256, uint256, uint256, uint256);\n\n\n\n function dai(address) public virtual view returns (uint256);\n\n\n\n function urns(bytes32, address) public virtual view returns (uint256, uint256);\n\n\n\n function frob(bytes32, address, address, address, int256, int256) public virtual;\n\n\n\n function hope(address) public virtual;\n\n\n\n function move(address, address, uint256) public virtual;\n\n}\n\nabstract contract GemJoinLike {\n\n function dec() public virtual returns (uint256);\n\n\n\n function gem() public virtual returns (GemLike);\n\n\n\n function join(address, uint256) public virtual payable;\n\n\n\n function exit(address, uint256) public virtual;\n\n}\n\nabstract contract GNTJoinLike {\n\n function bags(address) public virtual view returns (address);\n\n\n\n function make(address) public virtual returns (address);\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() public virtual returns (VatLike);\n\n\n\n function dai() public virtual returns (GemLike);\n\n\n\n function join(address, uint256) public virtual payable;\n\n\n\n function exit(address, uint256) public virtual;\n\n}\n\nabstract contract HopeLike {\n\n function hope(address) public virtual;\n\n\n\n function nope(address) public virtual;\n\n}\n\nabstract contract ProxyRegistryInterface {\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract EndLike {\n\n function fix(bytes32) public virtual view returns (uint256);\n\n\n\n function cash(bytes32, uint256) public virtual;\n\n\n\n function free(bytes32) public virtual;\n\n\n\n function pack(uint256) public virtual;\n\n\n\n function skim(bytes32, address) public virtual;\n\n}\n\nabstract contract JugLike {\n\n function drip(bytes32) public virtual returns (uint256);\n\n}\n\nabstract contract PotLike {\n\n function pie(address) public virtual view returns (uint256);\n\n\n\n function drip() public virtual returns (uint256);\n\n\n\n function join(uint256) public virtual;\n\n\n\n function exit(uint256) public virtual;\n\n}\n\nabstract contract ProxyRegistryLike {\n\n function proxies(address) public virtual view returns (address);\n\n\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract ProxyLike {\n\n function owner() public virtual view returns (address);\n\n}\n\ncontract Common {\n\n uint256 constant RAY = 10**27;\n\n\n\n // Internal functions\n\n\n\n function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require(y == 0 || (z = x * y) / y == x, \"mul-overflow\");\n\n }\n\n\n\n // Public functions\n\n // solhint-disable-next-line func-name-mixedcase\n\n function daiJoin_join(address apt, address urn, uint256 wad) public {\n\n // Gets DAI from the user's wallet\n\n DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the DAI amount\n\n DaiJoinLike(apt).dai().approve(apt, wad);\n\n // Joins DAI into the vat\n\n DaiJoinLike(apt).join(urn, wad);\n\n }\n\n}\n\ncontract MCDCreateProxyActions is Common {\n\n // Internal functions\n\n\n\n function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require((z = x - y) <= x, \"sub-overflow\");\n\n }\n\n\n\n function toInt(uint256 x) internal pure returns (int256 y) {\n\n y = int256(x);\n\n require(y >= 0, \"int-overflow\");\n\n }\n\n\n\n function toRad(uint256 wad) internal pure returns (uint256 rad) {\n\n rad = mul(wad, 10**27);\n\n }\n\n\n\n function convertTo18(address gemJoin, uint256 amt) internal returns (uint256 wad) {\n\n // For those collaterals that have less than 18 decimals precision we need to do the conversion before passing to frob function\n\n // Adapters will automatically handle the difference of precision\n\n wad = mul(amt, 10**(18 - GemJoinLike(gemJoin).dec()));\n\n }\n\n\n\n function _getDrawDart(address vat, address jug, address urn, bytes32 ilk, uint256 wad)\n\n internal\n\n returns (int256 dart)\n\n {\n\n // Updates stability fee rate\n\n uint256 rate = JugLike(jug).drip(ilk);\n\n\n\n // Gets DAI balance of the urn in the vat\n\n uint256 dai = VatLike(vat).dai(urn);\n\n\n\n // If there was already enough DAI in the vat balance, just exits it without adding more debt\n\n if (dai < mul(wad, RAY)) {\n\n // Calculates the needed dart so together with the existing dai in the vat is enough to exit wad amount of DAI tokens\n\n dart = toInt(sub(mul(wad, RAY), dai) / rate);\n\n // This is neeeded due lack of precision. It might need to sum an extra dart wei (for the given DAI wad amount)\n\n dart = mul(uint256(dart), rate) < mul(wad, RAY) ? dart + 1 : dart;\n\n }\n\n }\n\n\n\n function _getWipeDart(address vat, uint256 dai, address urn, bytes32 ilk)\n\n internal\n\n view\n\n returns (int256 dart)\n\n {\n\n // Gets actual rate from the vat\n\n (, uint256 rate, , , ) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint256 art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Uses the whole dai balance in the vat to reduce the debt\n\n dart = toInt(dai / rate);\n\n // Checks the calculated dart is not higher than urn.art (total debt), otherwise uses its value\n\n dart = uint256(dart) <= art ? -dart : -toInt(art);\n\n }\n\n\n\n function _getWipeAllWad(address vat, address usr, address urn, bytes32 ilk)\n\n internal\n\n view\n\n returns (uint256 wad)\n\n {\n\n // Gets actual rate from the vat\n\n (, uint256 rate, , , ) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint256 art) = VatLike(vat).urns(ilk, urn);\n\n // Gets actual dai amount in the urn\n\n uint256 dai = VatLike(vat).dai(usr);\n\n\n\n uint256 rad = sub(mul(art, rate), dai);\n\n wad = rad / RAY;\n\n\n\n // If the rad precision has some dust, it will need to request for 1 extra wad wei\n\n wad = mul(wad, RAY) < rad ? wad + 1 : wad;\n\n }\n\n\n\n // Public functions\n\n\n\n function transfer(address gem, address dst, uint256 wad) public {\n\n GemLike(gem).transfer(dst, wad);\n\n }\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function ethJoin_join(address apt, address urn) public payable {\n\n // Wraps ETH in WETH\n\n GemJoinLike(apt).gem().deposit{value: msg.value}();\n\n // Approves adapter to take the WETH amount\n\n GemJoinLike(apt).gem().approve(address(apt), msg.value);\n\n // Joins WETH collateral into the vat\n\n GemJoinLike(apt).join(urn, msg.value);\n\n }\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function gemJoin_join(address apt, address urn, uint256 wad, bool transferFrom) public {\n\n // Only executes for tokens that have approval/transferFrom implementation\n\n if (transferFrom) {\n\n // Gets token from the user's wallet\n\n GemJoinLike(apt).gem().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the token amount\n\n GemJoinLike(apt).gem().approve(apt, 0);\n\n GemJoinLike(apt).gem().approve(apt, wad);\n\n }\n\n // Joins token collateral into the vat\n\n GemJoinLike(apt).join(urn, wad);\n\n }\n\n\n\n function hope(address obj, address usr) public {\n\n HopeLike(obj).hope(usr);\n\n }\n\n\n\n function nope(address obj, address usr) public {\n\n HopeLike(obj).nope(usr);\n\n }\n\n\n\n function open(address manager, bytes32 ilk, address usr) public returns (uint256 cdp) {\n\n cdp = ManagerLike(manager).open(ilk, usr);\n\n }\n\n\n\n function give(address manager, uint256 cdp, address usr) public {\n\n ManagerLike(manager).give(cdp, usr);\n\n }\n\n\n\n function move(address manager, uint256 cdp, address dst, uint256 rad) public {\n\n ManagerLike(manager).move(cdp, dst, rad);\n\n }\n\n\n\n function frob(address manager, uint256 cdp, int256 dink, int256 dart) public {\n\n ManagerLike(manager).frob(cdp, dink, dart);\n\n }\n\n\n\n function lockETH(address manager, address ethJoin, uint256 cdp) public payable {\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, address(this));\n\n // Locks WETH amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(msg.value),\n\n 0\n\n );\n\n }\n\n\n\n function lockGem(address manager, address gemJoin, uint256 cdp, uint256 wad, bool transferFrom)\n\n public\n\n {\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, address(this), wad, transferFrom);\n\n // Locks token amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(convertTo18(gemJoin, wad)),\n\n 0\n\n );\n\n }\n\n\n\n function draw(address manager, address jug, address daiJoin, uint256 cdp, uint256 wad) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Generates debt in the CDP\n\n frob(manager, cdp, 0, _getDrawDart(vat, jug, urn, ilk, wad));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wad));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wad);\n\n }\n\n\n\n function lockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n uint256 cdp,\n\n uint256 wadD\n\n ) public payable {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, urn);\n\n // Locks WETH amount into the CDP and generates debt\n\n frob(manager, cdp, toInt(msg.value), _getDrawDart(vat, jug, urn, ilk, wadD));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n }\n\n\n\n function openLockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint256 wadD,\n\n address owner\n\n ) public payable returns (uint256 cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockETHAndDraw(manager, jug, ethJoin, daiJoin, cdp, wadD);\n\n give(manager, cdp, owner);\n\n }\n\n\n\n function lockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n uint256 cdp,\n\n uint256 wadC,\n\n uint256 wadD,\n\n bool transferFrom\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, urn, wadC, transferFrom);\n\n // Locks token amount into the CDP and generates debt\n\n frob(\n\n manager,\n\n cdp,\n\n toInt(convertTo18(gemJoin, wadC)),\n\n _getDrawDart(vat, jug, urn, ilk, wadD)\n\n );\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n }\n\n\n\n function openLockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint256 wadC,\n\n uint256 wadD,\n\n bool transferFrom,\n\n address owner\n\n ) public returns (uint256 cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockGemAndDraw(manager, jug, gemJoin, daiJoin, cdp, wadC, wadD, transferFrom);\n\n give(manager, cdp, owner);\n\n }\n\n}\n\ncontract MCDCreateTaker {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant MCD_CREATE_FLASH_LOAN = 0x71eC9a4fCE561c3936a511D9ebb05B60CF2bA519;\n\n\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n address public constant ETH_JOIN_ADDRESS = 0x2F0b23f53734252Bda2277357e97e1517d6B042A;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n struct CreateData {\n\n uint collAmount;\n\n uint daiAmount;\n\n address joinAddr;\n\n }\n\n\n\n function openWithLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n CreateData memory _createData\n\n ) public payable {\n\n\n\n MCD_CREATE_FLASH_LOAN.transfer(msg.value); //0x fee\n\n\n\n\n\n if (_createData.joinAddr != ETH_JOIN_ADDRESS) {\n\n ERC20(getCollateralAddr(_createData.joinAddr)).safeTransferFrom(msg.sender, address(this), _createData.collAmount);\n\n ERC20(getCollateralAddr(_createData.joinAddr)).safeTransfer(MCD_CREATE_FLASH_LOAN, _createData.collAmount);\n\n }\n\n\n\n (uint[6] memory numData, address[5] memory addrData, bytes memory callData)\n\n = _packData(_createData, _exchangeData);\n\n bytes memory paramsData = abi.encode(numData, addrData, callData, address(this));\n\n\n\n lendingPool.flashLoan(MCD_CREATE_FLASH_LOAN, DAI_ADDRESS, _createData.daiAmount, paramsData);\n\n\n\n logger.Log(address(this), msg.sender, \"MCDCreate\", abi.encode(manager.last(address(this)), _createData.collAmount, _createData.daiAmount));\n\n }\n\n\n\n function getCollateralAddr(address _joinAddr) internal view returns (address) {\n\n return address(Join(_joinAddr).gem());\n\n }\n\n\n\n function _packData(\n\n CreateData memory _createData,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[6] memory numData, address[5] memory addrData, bytes memory callData) {\n\n\n\n numData = [\n\n _createData.collAmount,\n\n _createData.daiAmount,\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n addrData = [\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper,\n\n _createData.joinAddr\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint) virtual public;\n\n function transfer(address, uint) virtual public;\n\n function transferFrom(address, address, uint) virtual public;\n\n function deposit() virtual public payable;\n\n function withdraw(uint) virtual public;\n\n}\n\nabstract contract ManagerLike {\n\n function cdpCan(address, uint, address) virtual public view returns (uint);\n\n function ilks(uint) virtual public view returns (bytes32);\n\n function owns(uint) virtual public view returns (address);\n\n function urns(uint) virtual public view returns (address);\n\n function vat() virtual public view returns (address);\n\n function open(bytes32, address) virtual public returns (uint);\n\n function give(uint, address) virtual public;\n\n function cdpAllow(uint, address, uint) virtual public;\n\n function urnAllow(address, uint) virtual public;\n\n function frob(uint, int, int) virtual public;\n\n function flux(uint, address, uint) virtual public;\n\n function move(uint, address, uint) virtual public;\n\n function exit(address, uint, address, uint) virtual public;\n\n function quit(uint, address) virtual public;\n\n function enter(address, uint) virtual public;\n\n function shift(uint, uint) virtual public;\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) virtual public view returns (uint);\n\n function ilks(bytes32) virtual public view returns (uint, uint, uint, uint, uint);\n\n function dai(address) virtual public view returns (uint);\n\n function urns(bytes32, address) virtual public view returns (uint, uint);\n\n function frob(bytes32, address, address, address, int, int) virtual public;\n\n function hope(address) virtual public;\n\n function move(address, address, uint) virtual public;\n\n}\n\nabstract contract GemJoinLike {\n\n function dec() virtual public returns (uint);\n\n function gem() virtual public returns (GemLike);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\nabstract contract GNTJoinLike {\n\n function bags(address) virtual public view returns (address);\n\n function make(address) virtual public returns (address);\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() virtual public returns (VatLike);\n\n function dai() virtual public returns (GemLike);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\nabstract contract HopeLike {\n\n function hope(address) virtual public;\n\n function nope(address) virtual public;\n\n}\n\nabstract contract ProxyRegistryInterface {\n\n function proxies(address _owner) virtual public view returns (address);\n\n function build(address) virtual public returns (address);\n\n}\n\nabstract contract EndLike {\n\n function fix(bytes32) virtual public view returns (uint);\n\n function cash(bytes32, uint) virtual public;\n\n function free(bytes32) virtual public;\n\n function pack(uint) virtual public;\n\n function skim(bytes32, address) virtual public;\n\n}\n\nabstract contract JugLike {\n\n function drip(bytes32) virtual public returns (uint);\n\n}\n\nabstract contract PotLike {\n\n function pie(address) virtual public view returns (uint);\n\n function drip() virtual public returns (uint);\n\n function join(uint) virtual public;\n\n function exit(uint) virtual public;\n\n}\n\nabstract contract ProxyRegistryLike {\n\n function proxies(address) virtual public view returns (address);\n\n function build(address) virtual public returns (address);\n\n}\n\nabstract contract ProxyLike {\n\n function owner() virtual public view returns (address);\n\n}\n\nabstract contract DSProxy {\n\n function execute(address _target, bytes memory _data) virtual public payable returns (bytes32);\n\n function setOwner(address owner_) virtual public;\n\n}\n\ncontract Common {\n\n uint256 constant RAY = 10 ** 27;\n\n\n\n // Internal functions\n\n\n\n function mul(uint x, uint y) internal pure returns (uint z) {\n\n require(y == 0 || (z = x * y) / y == x, \"mul-overflow\");\n\n }\n\n\n\n // Public functions\n\n\n\n function daiJoin_join(address apt, address urn, uint wad) public {\n\n // Gets DAI from the user's wallet\n\n DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the DAI amount\n\n DaiJoinLike(apt).dai().approve(apt, wad);\n\n // Joins DAI into the vat\n\n DaiJoinLike(apt).join(urn, wad);\n\n }\n\n}\n\ncontract SaverProxyActions is Common {\n\n\n\n\n\n event CDPAction(string indexed, uint indexed, uint, uint);\n\n\n\n // Internal functions\n\n\n\n function sub(uint x, uint y) internal pure returns (uint z) {\n\n require((z = x - y) <= x, \"sub-overflow\");\n\n }\n\n\n\n function toInt(uint x) internal pure returns (int y) {\n\n y = int(x);\n\n require(y >= 0, \"int-overflow\");\n\n }\n\n\n\n function toRad(uint wad) internal pure returns (uint rad) {\n\n rad = mul(wad, 10 ** 27);\n\n }\n\n\n\n function convertTo18(address gemJoin, uint256 amt) internal returns (uint256 wad) {\n\n // For those collaterals that have less than 18 decimals precision we need to do the conversion before passing to frob function\n\n // Adapters will automatically handle the difference of precision\n\n wad = mul(\n\n amt,\n\n 10 ** (18 - GemJoinLike(gemJoin).dec())\n\n );\n\n }\n\n\n\n function _getDrawDart(\n\n address vat,\n\n address jug,\n\n address urn,\n\n bytes32 ilk,\n\n uint wad\n\n ) internal returns (int dart) {\n\n // Updates stability fee rate\n\n uint rate = JugLike(jug).drip(ilk);\n\n\n\n // Gets DAI balance of the urn in the vat\n\n uint dai = VatLike(vat).dai(urn);\n\n\n\n // If there was already enough DAI in the vat balance, just exits it without adding more debt\n\n if (dai < mul(wad, RAY)) {\n\n // Calculates the needed dart so together with the existing dai in the vat is enough to exit wad amount of DAI tokens\n\n dart = toInt(sub(mul(wad, RAY), dai) / rate);\n\n // This is neeeded due lack of precision. It might need to sum an extra dart wei (for the given DAI wad amount)\n\n dart = mul(uint(dart), rate) < mul(wad, RAY) ? dart + 1 : dart;\n\n }\n\n }\n\n\n\n function _getWipeDart(\n\n address vat,\n\n uint dai,\n\n address urn,\n\n bytes32 ilk\n\n ) internal view returns (int dart) {\n\n // Gets actual rate from the vat\n\n (, uint rate,,,) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Uses the whole dai balance in the vat to reduce the debt\n\n dart = toInt(dai / rate);\n\n // Checks the calculated dart is not higher than urn.art (total debt), otherwise uses its value\n\n dart = uint(dart) <= art ? - dart : - toInt(art);\n\n }\n\n\n\n function _getWipeAllWad(\n\n address vat,\n\n address usr,\n\n address urn,\n\n bytes32 ilk\n\n ) internal view returns (uint wad) {\n\n // Gets actual rate from the vat\n\n (, uint rate,,,) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n // Gets actual dai amount in the urn\n\n uint dai = VatLike(vat).dai(usr);\n\n\n\n uint rad = sub(mul(art, rate), dai);\n\n wad = rad / RAY;\n\n\n\n // If the rad precision has some dust, it will need to request for 1 extra wad wei\n\n wad = mul(wad, RAY) < rad ? wad + 1 : wad;\n\n }\n\n\n\n // Public functions\n\n\n\n function transfer(address gem, address dst, uint wad) public {\n\n GemLike(gem).transfer(dst, wad);\n\n }\n\n\n\n function ethJoin_join(address apt, address urn) public payable {\n\n // Wraps ETH in WETH\n\n GemJoinLike(apt).gem().deposit{value: msg.value}();\n\n // Approves adapter to take the WETH amount\n\n GemJoinLike(apt).gem().approve(address(apt), msg.value);\n\n // Joins WETH collateral into the vat\n\n GemJoinLike(apt).join(urn, msg.value);\n\n }\n\n\n\n function gemJoin_join(address apt, address urn, uint wad, bool transferFrom) public {\n\n // Only executes for tokens that have approval/transferFrom implementation\n\n if (transferFrom) {\n\n // Gets token from the user's wallet\n\n GemJoinLike(apt).gem().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the token amount\n\n GemJoinLike(apt).gem().approve(apt, 0);\n\n GemJoinLike(apt).gem().approve(apt, wad);\n\n }\n\n // Joins token collateral into the vat\n\n GemJoinLike(apt).join(urn, wad);\n\n }\n\n\n\n function hope(\n\n address obj,\n\n address usr\n\n ) public {\n\n HopeLike(obj).hope(usr);\n\n }\n\n\n\n function nope(\n\n address obj,\n\n address usr\n\n ) public {\n\n HopeLike(obj).nope(usr);\n\n }\n\n\n\n function open(\n\n address manager,\n\n bytes32 ilk,\n\n address usr\n\n ) public returns (uint cdp) {\n\n cdp = ManagerLike(manager).open(ilk, usr);\n\n }\n\n\n\n function give(\n\n address manager,\n\n uint cdp,\n\n address usr\n\n ) public {\n\n ManagerLike(manager).give(cdp, usr);\n\n\n\n emit CDPAction('give', cdp, 0, 0);\n\n }\n\n\n\n function giveToProxy(\n\n address proxyRegistry,\n\n address manager,\n\n uint cdp,\n\n address dst\n\n ) public {\n\n // Gets actual proxy address\n\n address proxy = ProxyRegistryLike(proxyRegistry).proxies(dst);\n\n // Checks if the proxy address already existed and dst address is still the owner\n\n if (proxy == address(0) || ProxyLike(proxy).owner() != dst) {\n\n uint csize;\n\n assembly {\n\n csize := extcodesize(dst)\n\n }\n\n // We want to avoid creating a proxy for a contract address that might not be able to handle proxies, then losing the CDP\n\n require(csize == 0, \"Dst-is-a-contract\");\n\n // Creates the proxy for the dst address\n\n proxy = ProxyRegistryLike(proxyRegistry).build(dst);\n\n }\n\n // Transfers CDP to the dst proxy\n\n give(manager, cdp, proxy);\n\n }\n\n\n\n function cdpAllow(\n\n address manager,\n\n uint cdp,\n\n address usr,\n\n uint ok\n\n ) public {\n\n ManagerLike(manager).cdpAllow(cdp, usr, ok);\n\n }\n\n\n\n function urnAllow(\n\n address manager,\n\n address usr,\n\n uint ok\n\n ) public {\n\n ManagerLike(manager).urnAllow(usr, ok);\n\n }\n\n\n\n function flux(\n\n address manager,\n\n uint cdp,\n\n address dst,\n\n uint wad\n\n ) public {\n\n ManagerLike(manager).flux(cdp, dst, wad);\n\n }\n\n\n\n function move(\n\n address manager,\n\n uint cdp,\n\n address dst,\n\n uint rad\n\n ) public {\n\n ManagerLike(manager).move(cdp, dst, rad);\n\n }\n\n\n\n function frob(\n\n address manager,\n\n uint cdp,\n\n int dink,\n\n int dart\n\n ) public {\n\n ManagerLike(manager).frob(cdp, dink, dart);\n\n }\n\n\n\n function quit(\n\n address manager,\n\n uint cdp,\n\n address dst\n\n ) public {\n\n ManagerLike(manager).quit(cdp, dst);\n\n }\n\n\n\n function enter(\n\n address manager,\n\n address src,\n\n uint cdp\n\n ) public {\n\n ManagerLike(manager).enter(src, cdp);\n\n }\n\n\n\n function shift(\n\n address manager,\n\n uint cdpSrc,\n\n uint cdpOrg\n\n ) public {\n\n ManagerLike(manager).shift(cdpSrc, cdpOrg);\n\n }\n\n\n\n function makeGemBag(\n\n address gemJoin\n\n ) public returns (address bag) {\n\n bag = GNTJoinLike(gemJoin).make(address(this));\n\n }\n\n\n\n function lockETH(\n\n address manager,\n\n address ethJoin,\n\n uint cdp\n\n ) public payable {\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, address(this));\n\n // Locks WETH amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(msg.value),\n\n 0\n\n );\n\n\n\n emit CDPAction('lockETH', cdp, msg.value, 0);\n\n }\n\n\n\n function lockGem(\n\n address manager,\n\n address gemJoin,\n\n uint cdp,\n\n uint wad,\n\n bool transferFrom\n\n ) public {\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, address(this), wad, transferFrom);\n\n // Locks token amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(convertTo18(gemJoin, wad)),\n\n 0\n\n );\n\n\n\n emit CDPAction('lockGem', cdp, wad, 0);\n\n }\n\n\n\n function freeETH(\n\n address manager,\n\n address ethJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n // Unlocks WETH amount from the CDP\n\n frob(manager, cdp, -toInt(wad), 0);\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad);\n\n // Exits WETH amount to proxy address as a token\n\n GemJoinLike(ethJoin).exit(address(this), wad);\n\n // Converts WETH to ETH\n\n GemJoinLike(ethJoin).gem().withdraw(wad);\n\n // Sends ETH back to the user's wallet\n\n msg.sender.transfer(wad);\n\n\n\n emit CDPAction('freeETH', cdp, wad, 0);\n\n }\n\n\n\n function freeGem(\n\n address manager,\n\n address gemJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n uint wad18 = convertTo18(gemJoin, wad);\n\n // Unlocks token amount from the CDP\n\n frob(manager, cdp, -toInt(wad18), 0);\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad18);\n\n // Exits token amount to the user's wallet as a token\n\n GemJoinLike(gemJoin).exit(msg.sender, wad);\n\n\n\n emit CDPAction('freeGem', cdp, wad, 0);\n\n }\n\n\n\n function exitETH(\n\n address manager,\n\n address ethJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad);\n\n\n\n // Exits WETH amount to proxy address as a token\n\n GemJoinLike(ethJoin).exit(address(this), wad);\n\n // Converts WETH to ETH\n\n GemJoinLike(ethJoin).gem().withdraw(wad);\n\n // Sends ETH back to the user's wallet\n\n msg.sender.transfer(wad);\n\n }\n\n\n\n function exitGem(\n\n address manager,\n\n address gemJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), convertTo18(gemJoin, wad));\n\n\n\n // Exits token amount to the user's wallet as a token\n\n GemJoinLike(gemJoin).exit(msg.sender, wad);\n\n }\n\n\n\n function draw(\n\n address manager,\n\n address jug,\n\n address daiJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Generates debt in the CDP\n\n frob(manager, cdp, 0, _getDrawDart(vat, jug, urn, ilk, wad));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wad));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wad);\n\n\n\n emit CDPAction('draw', cdp, 0, wad);\n\n }\n\n\n\n function wipe(\n\n address manager,\n\n address daiJoin,\n\n uint cdp,\n\n uint wad\n\n ) public {\n\n address vat = ManagerLike(manager).vat();\n\n address urn = ManagerLike(manager).urns(cdp);\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n\n\n address own = ManagerLike(manager).owns(cdp);\n\n if (own == address(this) || ManagerLike(manager).cdpCan(own, cdp, address(this)) == 1) {\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, wad);\n\n // Paybacks debt to the CDP\n\n frob(manager, cdp, 0, _getWipeDart(vat, VatLike(vat).dai(urn), urn, ilk));\n\n } else {\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, address(this), wad);\n\n // Paybacks debt to the CDP\n\n VatLike(vat).frob(\n\n ilk,\n\n urn,\n\n address(this),\n\n address(this),\n\n 0,\n\n _getWipeDart(vat, wad * RAY, urn, ilk)\n\n );\n\n }\n\n\n\n emit CDPAction('wipe', cdp, 0, wad);\n\n }\n\n\n\n function wipeAll(\n\n address manager,\n\n address daiJoin,\n\n uint cdp\n\n ) public {\n\n address vat = ManagerLike(manager).vat();\n\n address urn = ManagerLike(manager).urns(cdp);\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n\n\n address own = ManagerLike(manager).owns(cdp);\n\n if (own == address(this) || ManagerLike(manager).cdpCan(own, cdp, address(this)) == 1) {\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, _getWipeAllWad(vat, urn, urn, ilk));\n\n // Paybacks debt to the CDP\n\n frob(manager, cdp, 0, -int(art));\n\n } else {\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, address(this), _getWipeAllWad(vat, address(this), urn, ilk));\n\n // Paybacks debt to the CDP\n\n VatLike(vat).frob(\n\n ilk,\n\n urn,\n\n address(this),\n\n address(this),\n\n 0,\n\n -int(art)\n\n );\n\n }\n\n\n\n emit CDPAction('wipeAll', cdp, 0, art);\n\n }\n\n\n\n function lockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadD\n\n ) public payable {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, urn);\n\n // Locks WETH amount into the CDP and generates debt\n\n frob(manager, cdp, toInt(msg.value), _getDrawDart(vat, jug, urn, ilk, wadD));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n }\n\n\n\n function openLockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint wadD\n\n ) public payable returns (uint cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockETHAndDraw(manager, jug, ethJoin, daiJoin, cdp, wadD);\n\n\n\n emit CDPAction('openLockETHAndDraw', cdp, msg.value, wadD);\n\n }\n\n\n\n function lockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadC,\n\n uint wadD,\n\n bool transferFrom\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, urn, wadC, transferFrom);\n\n // Locks token amount into the CDP and generates debt\n\n frob(manager, cdp, toInt(convertTo18(gemJoin, wadC)), _getDrawDart(vat, jug, urn, ilk, wadD));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n\n\n }\n\n\n\n function openLockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint wadC,\n\n uint wadD,\n\n bool transferFrom\n\n ) public returns (uint cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockGemAndDraw(manager, jug, gemJoin, daiJoin, cdp, wadC, wadD, transferFrom);\n\n\n\n emit CDPAction('openLockGemAndDraw', cdp, wadC, wadD);\n\n\n\n }\n\n\n\n function wipeAllAndFreeETH(\n\n address manager,\n\n address ethJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadC\n\n ) public {\n\n address vat = ManagerLike(manager).vat();\n\n address urn = ManagerLike(manager).urns(cdp);\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, _getWipeAllWad(vat, urn, urn, ilk));\n\n // Paybacks debt to the CDP and unlocks WETH amount from it\n\n frob(\n\n manager,\n\n cdp,\n\n -toInt(wadC),\n\n -int(art)\n\n );\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wadC);\n\n // Exits WETH amount to proxy address as a token\n\n GemJoinLike(ethJoin).exit(address(this), wadC);\n\n // Converts WETH to ETH\n\n GemJoinLike(ethJoin).gem().withdraw(wadC);\n\n // Sends ETH back to the user's wallet\n\n msg.sender.transfer(wadC);\n\n\n\n emit CDPAction('wipeAllAndFreeETH', cdp, wadC, art);\n\n }\n\n\n\n function wipeAndFreeGem(\n\n address manager,\n\n address gemJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadC,\n\n uint wadD\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, wadD);\n\n uint wad18 = convertTo18(gemJoin, wadC);\n\n // Paybacks debt to the CDP and unlocks token amount from it\n\n frob(\n\n manager,\n\n cdp,\n\n -toInt(wad18),\n\n _getWipeDart(ManagerLike(manager).vat(), VatLike(ManagerLike(manager).vat()).dai(urn), urn, ManagerLike(manager).ilks(cdp))\n\n );\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad18);\n\n // Exits token amount to the user's wallet as a token\n\n GemJoinLike(gemJoin).exit(msg.sender, wadC);\n\n }\n\n\n\n function wipeAllAndFreeGem(\n\n address manager,\n\n address gemJoin,\n\n address daiJoin,\n\n uint cdp,\n\n uint wadC\n\n ) public {\n\n address vat = ManagerLike(manager).vat();\n\n address urn = ManagerLike(manager).urns(cdp);\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n (, uint art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Joins DAI amount into the vat\n\n daiJoin_join(daiJoin, urn, _getWipeAllWad(vat, urn, urn, ilk));\n\n uint wad18 = convertTo18(gemJoin, wadC);\n\n // Paybacks debt to the CDP and unlocks token amount from it\n\n frob(\n\n manager,\n\n cdp,\n\n -toInt(wad18),\n\n -int(art)\n\n );\n\n // Moves the amount from the CDP urn to proxy's address\n\n flux(manager, cdp, address(this), wad18);\n\n // Exits token amount to the user's wallet as a token\n\n GemJoinLike(gemJoin).exit(msg.sender, wadC);\n\n\n\n emit CDPAction('wipeAllAndFreeGem', cdp, wadC, art);\n\n }\n\n\n\n function createProxyAndCDP(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint wadD,\n\n address registry\n\n ) public payable returns(uint) {\n\n\n\n address proxy = ProxyRegistryInterface(registry).build(msg.sender);\n\n\n\n uint cdp = openLockETHAndDraw(manager,\n\n jug,\n\n ethJoin,\n\n daiJoin,\n\n ilk,\n\n wadD\n\n );\n\n\n\n give(manager, cdp, address(proxy));\n\n\n\n return cdp;\n\n\n\n }\n\n\n\n function createProxyAndGemCDP(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint wadC,\n\n uint wadD,\n\n bool transferFrom,\n\n address registry\n\n ) public returns(uint) {\n\n\n\n\n\n address proxy = ProxyRegistryInterface(registry).build(msg.sender);\n\n\n\n uint cdp = openLockGemAndDraw(manager,\n\n jug,\n\n gemJoin,\n\n daiJoin,\n\n ilk,\n\n wadC,\n\n wadD,\n\n transferFrom);\n\n\n\n give(manager, cdp, address(proxy));\n\n\n\n return cdp;\n\n }\n\n}\n\ncontract MCDSaverProxyHelper is DSMath {\n\n\n\n /// @notice Returns a normalized debt _amount based on the current rate\n\n /// @param _amount Amount of dai to be normalized\n\n /// @param _rate Current rate of the stability fee\n\n /// @param _daiVatBalance Balance od Dai in the Vat for that CDP\n\n function normalizeDrawAmount(uint _amount, uint _rate, uint _daiVatBalance) internal pure returns (int dart) {\n\n if (_daiVatBalance < mul(_amount, RAY)) {\n\n dart = toPositiveInt(sub(mul(_amount, RAY), _daiVatBalance) / _rate);\n\n dart = mul(uint(dart), _rate) < mul(_amount, RAY) ? dart + 1 : dart;\n\n }\n\n }\n\n\n\n /// @notice Converts a number to Rad percision\n\n /// @param _wad The input number in wad percision\n\n function toRad(uint _wad) internal pure returns (uint) {\n\n return mul(_wad, 10 ** 27);\n\n }\n\n\n\n /// @notice Converts a number to 18 decimal percision\n\n /// @param _joinAddr Join address of the collateral\n\n /// @param _amount Number to be converted\n\n function convertTo18(address _joinAddr, uint256 _amount) internal view returns (uint256) {\n\n return mul(_amount, 10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n /// @notice Converts a uint to int and checks if positive\n\n /// @param _x Number to be converted\n\n function toPositiveInt(uint _x) internal pure returns (int y) {\n\n y = int(_x);\n\n require(y >= 0, \"int-overflow\");\n\n }\n\n\n\n /// @notice Gets Dai amount in Vat which can be added to Cdp\n\n /// @param _vat Address of Vat contract\n\n /// @param _urn Urn of the Cdp\n\n /// @param _ilk Ilk of the Cdp\n\n function normalizePaybackAmount(address _vat, address _urn, bytes32 _ilk) internal view returns (int amount) {\n\n uint dai = Vat(_vat).dai(_urn);\n\n\n\n (, uint rate,,,) = Vat(_vat).ilks(_ilk);\n\n (, uint art) = Vat(_vat).urns(_ilk, _urn);\n\n\n\n amount = toPositiveInt(dai / rate);\n\n amount = uint(amount) <= art ? - amount : - toPositiveInt(art);\n\n }\n\n\n\n /// @notice Gets the whole debt of the CDP\n\n /// @param _vat Address of Vat contract\n\n /// @param _usr Address of the Dai holder\n\n /// @param _urn Urn of the Cdp\n\n /// @param _ilk Ilk of the Cdp\n\n function getAllDebt(address _vat, address _usr, address _urn, bytes32 _ilk) internal view returns (uint daiAmount) {\n\n (, uint rate,,,) = Vat(_vat).ilks(_ilk);\n\n (, uint art) = Vat(_vat).urns(_ilk, _urn);\n\n uint dai = Vat(_vat).dai(_usr);\n\n\n\n uint rad = sub(mul(art, rate), dai);\n\n daiAmount = rad / RAY;\n\n\n\n daiAmount = mul(daiAmount, RAY) < rad ? daiAmount + 1 : daiAmount;\n\n }\n\n\n\n /// @notice Gets the token address from the Join contract\n\n /// @param _joinAddr Address of the Join contract\n\n function getCollateralAddr(address _joinAddr) internal view returns (address) {\n\n return address(Join(_joinAddr).gem());\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt)\n\n /// @param _manager Manager contract\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getCdpInfo(Manager _manager, uint _cdpId, bytes32 _ilk) public view returns (uint, uint) {\n\n address vat = _manager.vat();\n\n address urn = _manager.urns(_cdpId);\n\n\n\n (uint collateral, uint debt) = Vat(vat).urns(_ilk, urn);\n\n (,uint rate,,,) = Vat(vat).ilks(_ilk);\n\n\n\n return (collateral, rmul(debt, rate));\n\n }\n\n\n\n /// @notice Address that owns the DSProxy that owns the CDP\n\n /// @param _manager Manager contract\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(Manager _manager, uint _cdpId) public view returns (address) {\n\n DSProxy proxy = DSProxy(uint160(_manager.owns(_cdpId)));\n\n\n\n return proxy.owner();\n\n }\n\n}\n\nabstract contract ProtocolInterface {\n\n function deposit(address _user, uint256 _amount) public virtual;\n\n\n\n function withdraw(address _user, uint256 _amount) public virtual;\n\n}\n\ncontract SavingsLogger {\n\n event Deposit(address indexed sender, uint8 protocol, uint256 amount);\n\n event Withdraw(address indexed sender, uint8 protocol, uint256 amount);\n\n event Swap(address indexed sender, uint8 fromProtocol, uint8 toProtocol, uint256 amount);\n\n\n\n function logDeposit(address _sender, uint8 _protocol, uint256 _amount) external {\n\n emit Deposit(_sender, _protocol, _amount);\n\n }\n\n\n\n function logWithdraw(address _sender, uint8 _protocol, uint256 _amount) external {\n\n emit Withdraw(_sender, _protocol, _amount);\n\n }\n\n\n\n function logSwap(address _sender, uint8 _protocolFrom, uint8 _protocolTo, uint256 _amount)\n\n external\n\n {\n\n emit Swap(_sender, _protocolFrom, _protocolTo, _amount);\n\n }\n\n}\n\ncontract AaveSavingsProtocol is ProtocolInterface, DSAuth {\n\n\n\n address public constant ADAI_ADDRESS = 0xfC1E690f61EFd961294b3e1Ce3313fBD8aa4f85d;\n\n address public constant AAVE_LENDING_POOL = 0x398eC7346DcD622eDc5ae82352F02bE94C62d119;\n\n address public constant AAVE_LENDING_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n ERC20(DAI_ADDRESS).approve(AAVE_LENDING_POOL_CORE, uint(-1));\n\n ILendingPool(AAVE_LENDING_POOL).deposit(DAI_ADDRESS, _amount, 0);\n\n\n\n ERC20(ADAI_ADDRESS).transfer(_user, ERC20(ADAI_ADDRESS).balanceOf(address(this)));\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n require(ERC20(ADAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n IAToken(ADAI_ADDRESS).redeem(_amount);\n\n\n\n // return dai we have to user\n\n ERC20(DAI_ADDRESS).transfer(_user, _amount);\n\n }\n\n}\n\ncontract CompoundSavingsProtocol {\n\n\n\n address public constant NEW_CDAI_ADDRESS = 0x5d3a536E4D6DbD6114cc1Ead35777bAB948E3643;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n CTokenInterface public constant cDaiContract = CTokenInterface(NEW_CDAI_ADDRESS);\n\n\n\n function compDeposit(address _user, uint _amount) internal {\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n // mainnet only\n\n ERC20(DAI_ADDRESS).approve(NEW_CDAI_ADDRESS, uint(-1));\n\n\n\n // mint cDai\n\n require(cDaiContract.mint(_amount) == 0, \"Failed Mint\");\n\n }\n\n\n\n function compWithdraw(address _user, uint _amount) internal {\n\n // transfer all users balance to this contract\n\n require(cDaiContract.transferFrom(_user, address(this), ERC20(NEW_CDAI_ADDRESS).balanceOf(_user)));\n\n\n\n // approve cDai to compound contract\n\n cDaiContract.approve(NEW_CDAI_ADDRESS, uint(-1));\n\n // get dai from cDai contract\n\n require(cDaiContract.redeemUnderlying(_amount) == 0, \"Reedem Failed\");\n\n\n\n // return to user balance we didn't spend\n\n uint cDaiBalance = cDaiContract.balanceOf(address(this));\n\n if (cDaiBalance > 0) {\n\n cDaiContract.transfer(_user, cDaiBalance);\n\n }\n\n // return dai we have to user\n\n ERC20(DAI_ADDRESS).transfer(_user, _amount);\n\n }\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) virtual public view returns (uint);\n\n function ilks(bytes32) virtual public view returns (uint, uint, uint, uint, uint);\n\n function dai(address) virtual public view returns (uint);\n\n function urns(bytes32, address) virtual public view returns (uint, uint);\n\n function frob(bytes32, address, address, address, int, int) virtual public;\n\n function hope(address) virtual public;\n\n function move(address, address, uint) virtual public;\n\n}\n\nabstract contract PotLike {\n\n function pie(address) virtual public view returns (uint);\n\n function drip() virtual public returns (uint);\n\n function join(uint) virtual public;\n\n function exit(uint) virtual public;\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint) virtual public;\n\n function transfer(address, uint) virtual public;\n\n function transferFrom(address, address, uint) virtual public;\n\n function deposit() virtual public payable;\n\n function withdraw(uint) virtual public;\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() virtual public returns (VatLike);\n\n function dai() virtual public returns (GemLike);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\ncontract DSRSavingsProtocol is DSMath {\n\n\n\n // Mainnet\n\n address public constant POT_ADDRESS = 0x197E90f9FAD81970bA7976f33CbD77088E5D7cf7;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n\n\n function dsrDeposit(uint _amount, bool _fromUser) internal {\n\n VatLike vat = DaiJoinLike(DAI_JOIN_ADDRESS).vat();\n\n\n\n uint chi = PotLike(POT_ADDRESS).drip();\n\n\n\n daiJoin_join(DAI_JOIN_ADDRESS, address(this), _amount, _fromUser);\n\n\n\n if (vat.can(address(this), address(POT_ADDRESS)) == 0) {\n\n vat.hope(POT_ADDRESS);\n\n }\n\n\n\n PotLike(POT_ADDRESS).join(mul(_amount, RAY) / chi);\n\n }\n\n\n\n function dsrWithdraw(uint _amount, bool _toUser) internal {\n\n VatLike vat = DaiJoinLike(DAI_JOIN_ADDRESS).vat();\n\n\n\n uint chi = PotLike(POT_ADDRESS).drip();\n\n uint pie = mul(_amount, RAY) / chi;\n\n\n\n PotLike(POT_ADDRESS).exit(pie);\n\n uint balance = DaiJoinLike(DAI_JOIN_ADDRESS).vat().dai(address(this));\n\n\n\n if (vat.can(address(this), address(DAI_JOIN_ADDRESS)) == 0) {\n\n vat.hope(DAI_JOIN_ADDRESS);\n\n }\n\n\n\n address to;\n\n if (_toUser) {\n\n to = msg.sender;\n\n } else {\n\n to = address(this);\n\n }\n\n\n\n if (_amount == uint(-1)) {\n\n DaiJoinLike(DAI_JOIN_ADDRESS).exit(to, mul(chi, pie) / RAY);\n\n } else {\n\n DaiJoinLike(DAI_JOIN_ADDRESS).exit(\n\n to,\n\n balance >= mul(_amount, RAY) ? _amount : balance / RAY\n\n );\n\n }\n\n }\n\n\n\n function daiJoin_join(address apt, address urn, uint wad, bool _fromUser) internal {\n\n if (_fromUser) {\n\n DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);\n\n }\n\n\n\n DaiJoinLike(apt).dai().approve(apt, wad);\n\n\n\n DaiJoinLike(apt).join(urn, wad);\n\n }\n\n}\n\ncontract DydxSavingsProtocol is ProtocolInterface, DSAuth {\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n ISoloMargin public soloMargin;\n\n address public savingsProxy;\n\n\n\n uint daiMarketId = 3;\n\n\n\n constructor() public {\n\n soloMargin = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n }\n\n\n\n function addSavingsProxy(address _savingsProxy) public auth {\n\n savingsProxy = _savingsProxy;\n\n }\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n Account.Info[] memory accounts = new Account.Info[](1);\n\n accounts[0] = getAccount(_user, 0);\n\n\n\n Actions.ActionArgs[] memory actions = new Actions.ActionArgs[](1);\n\n Types.AssetAmount memory amount = Types.AssetAmount({\n\n sign: true,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: _amount\n\n });\n\n\n\n actions[0] = Actions.ActionArgs({\n\n actionType: Actions.ActionType.Deposit,\n\n accountId: 0,\n\n amount: amount,\n\n primaryMarketId: daiMarketId,\n\n otherAddress: _user,\n\n secondaryMarketId: 0, //not used\n\n otherAccountId: 0, //not used\n\n data: \"\" //not used\n\n });\n\n\n\n soloMargin.operate(accounts, actions);\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n Account.Info[] memory accounts = new Account.Info[](1);\n\n accounts[0] = getAccount(_user, 0);\n\n\n\n Actions.ActionArgs[] memory actions = new Actions.ActionArgs[](1);\n\n Types.AssetAmount memory amount = Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: _amount\n\n });\n\n\n\n actions[0] = Actions.ActionArgs({\n\n actionType: Actions.ActionType.Withdraw,\n\n accountId: 0,\n\n amount: amount,\n\n primaryMarketId: daiMarketId,\n\n otherAddress: _user,\n\n secondaryMarketId: 0, //not used\n\n otherAccountId: 0, //not used\n\n data: \"\" //not used\n\n });\n\n\n\n soloMargin.operate(accounts, actions);\n\n }\n\n\n\n function getWeiBalance(address _user, uint _index) public view returns(Types.Wei memory) {\n\n\n\n Types.Wei[] memory weiBalances;\n\n (,,weiBalances) = soloMargin.getAccountBalances(getAccount(_user, _index));\n\n\n\n return weiBalances[daiMarketId];\n\n }\n\n\n\n function getParBalance(address _user, uint _index) public view returns(Types.Par memory) {\n\n Types.Par[] memory parBalances;\n\n (,parBalances,) = soloMargin.getAccountBalances(getAccount(_user, _index));\n\n\n\n return parBalances[daiMarketId];\n\n }\n\n\n\n function getAccount(address _user, uint _index) public pure returns(Account.Info memory) {\n\n Account.Info memory account = Account.Info({\n\n owner: _user,\n\n number: _index\n\n });\n\n\n\n return account;\n\n }\n\n}\n\nabstract contract ISoloMargin {\n\n struct OperatorArg {\n\n address operator;\n\n bool trusted;\n\n }\n\n\n\n function operate(\n\n Account.Info[] memory accounts,\n\n Actions.ActionArgs[] memory actions\n\n ) public virtual;\n\n\n\n function getAccountBalances(\n\n Account.Info memory account\n\n ) public view virtual returns (\n\n address[] memory,\n\n Types.Par[] memory,\n\n Types.Wei[] memory\n\n );\n\n\n\n function setOperators(\n\n OperatorArg[] memory args\n\n ) public virtual;\n\n\n\n\n\n function getNumMarkets() public view virtual returns (uint256);\n\n\n\n function getMarketTokenAddress(uint256 marketId)\n\n public\n\n view\n\n virtual\n\n returns (address);\n\n}\n\nlibrary Account {\n\n // ============ Enums ============\n\n\n\n /*\n\n * Most-recently-cached account status.\n\n *\n\n * Normal: Can only be liquidated if the account values are violating the global margin-ratio.\n\n * Liquid: Can be liquidated no matter the account values.\n\n * Can be vaporized if there are no more positive account values.\n\n * Vapor: Has only negative (or zeroed) account values. Can be vaporized.\n\n *\n\n */\n\n enum Status {\n\n Normal,\n\n Liquid,\n\n Vapor\n\n }\n\n\n\n // ============ Structs ============\n\n\n\n // Represents the unique key that specifies an account\n\n struct Info {\n\n address owner; // The address that owns the account\n\n uint256 number; // A nonce that allows a single address to control many accounts\n\n }\n\n\n\n // The complete storage for any account\n\n struct Storage {\n\n mapping (uint256 => Types.Par) balances; // Mapping from marketId to principal\n\n Status status;\n\n }\n\n\n\n // ============ Library Functions ============\n\n\n\n function equals(\n\n Info memory a,\n\n Info memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.owner == b.owner && a.number == b.number;\n\n }\n\n}\n\nlibrary Actions {\n\n\n\n // ============ Constants ============\n\n\n\n bytes32 constant FILE = \"Actions\";\n\n\n\n // ============ Enums ============\n\n\n\n enum ActionType {\n\n Deposit, // supply tokens\n\n Withdraw, // borrow tokens\n\n Transfer, // transfer balance between accounts\n\n Buy, // buy an amount of some token (externally)\n\n Sell, // sell an amount of some token (externally)\n\n Trade, // trade tokens against another account\n\n Liquidate, // liquidate an undercollateralized or expiring account\n\n Vaporize, // use excess tokens to zero-out a completely negative account\n\n Call // send arbitrary data to an address\n\n }\n\n\n\n enum AccountLayout {\n\n OnePrimary,\n\n TwoPrimary,\n\n PrimaryAndSecondary\n\n }\n\n\n\n enum MarketLayout {\n\n ZeroMarkets,\n\n OneMarket,\n\n TwoMarkets\n\n }\n\n\n\n // ============ Structs ============\n\n\n\n /*\n\n * Arguments that are passed to Solo in an ordered list as part of a single operation.\n\n * Each ActionArgs has an actionType which specifies which action struct that this data will be\n\n * parsed into before being processed.\n\n */\n\n struct ActionArgs {\n\n ActionType actionType;\n\n uint256 accountId;\n\n Types.AssetAmount amount;\n\n uint256 primaryMarketId;\n\n uint256 secondaryMarketId;\n\n address otherAddress;\n\n uint256 otherAccountId;\n\n bytes data;\n\n }\n\n\n\n // ============ Action Types ============\n\n\n\n /*\n\n * Moves tokens from an address to Solo. Can either repay a borrow or provide additional supply.\n\n */\n\n struct DepositArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 market;\n\n address from;\n\n }\n\n\n\n /*\n\n * Moves tokens from Solo to another address. Can either borrow tokens or reduce the amount\n\n * previously supplied.\n\n */\n\n struct WithdrawArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 market;\n\n address to;\n\n }\n\n\n\n /*\n\n * Transfers balance between two accounts. The msg.sender must be an operator for both accounts.\n\n * The amount field applies to accountOne.\n\n * This action does not require any token movement since the trade is done internally to Solo.\n\n */\n\n struct TransferArgs {\n\n Types.AssetAmount amount;\n\n Account.Info accountOne;\n\n Account.Info accountTwo;\n\n uint256 market;\n\n }\n\n\n\n /*\n\n * Acquires a certain amount of tokens by spending other tokens. Sends takerMarket tokens to the\n\n * specified exchangeWrapper contract and expects makerMarket tokens in return. The amount field\n\n * applies to the makerMarket.\n\n */\n\n struct BuyArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 makerMarket;\n\n uint256 takerMarket;\n\n address exchangeWrapper;\n\n bytes orderData;\n\n }\n\n\n\n /*\n\n * Spends a certain amount of tokens to acquire other tokens. Sends takerMarket tokens to the\n\n * specified exchangeWrapper and expects makerMarket tokens in return. The amount field applies\n\n * to the takerMarket.\n\n */\n\n struct SellArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 takerMarket;\n\n uint256 makerMarket;\n\n address exchangeWrapper;\n\n bytes orderData;\n\n }\n\n\n\n /*\n\n * Trades balances between two accounts using any external contract that implements the\n\n * AutoTrader interface. The AutoTrader contract must be an operator for the makerAccount (for\n\n * which it is trading on-behalf-of). The amount field applies to the makerAccount and the\n\n * inputMarket. This proposed change to the makerAccount is passed to the AutoTrader which will\n\n * quote a change for the makerAccount in the outputMarket (or will disallow the trade).\n\n * This action does not require any token movement since the trade is done internally to Solo.\n\n */\n\n struct TradeArgs {\n\n Types.AssetAmount amount;\n\n Account.Info takerAccount;\n\n Account.Info makerAccount;\n\n uint256 inputMarket;\n\n uint256 outputMarket;\n\n address autoTrader;\n\n bytes tradeData;\n\n }\n\n\n\n /*\n\n * Each account must maintain a certain margin-ratio (specified globally). If the account falls\n\n * below this margin-ratio, it can be liquidated by any other account. This allows anyone else\n\n * (arbitrageurs) to repay any borrowed asset (owedMarket) of the liquidating account in\n\n * exchange for any collateral asset (heldMarket) of the liquidAccount. The ratio is determined\n\n * by the price ratio (given by the oracles) plus a spread (specified globally). Liquidating an\n\n * account also sets a flag on the account that the account is being liquidated. This allows\n\n * anyone to continue liquidating the account until there are no more borrows being taken by the\n\n * liquidating account. Liquidators do not have to liquidate the entire account all at once but\n\n * can liquidate as much as they choose. The liquidating flag allows liquidators to continue\n\n * liquidating the account even if it becomes collateralized through partial liquidation or\n\n * price movement.\n\n */\n\n struct LiquidateArgs {\n\n Types.AssetAmount amount;\n\n Account.Info solidAccount;\n\n Account.Info liquidAccount;\n\n uint256 owedMarket;\n\n uint256 heldMarket;\n\n }\n\n\n\n /*\n\n * Similar to liquidate, but vaporAccounts are accounts that have only negative balances\n\n * remaining. The arbitrageur pays back the negative asset (owedMarket) of the vaporAccount in\n\n * exchange for a collateral asset (heldMarket) at a favorable spread. However, since the\n\n * liquidAccount has no collateral assets, the collateral must come from Solo's excess tokens.\n\n */\n\n struct VaporizeArgs {\n\n Types.AssetAmount amount;\n\n Account.Info solidAccount;\n\n Account.Info vaporAccount;\n\n uint256 owedMarket;\n\n uint256 heldMarket;\n\n }\n\n\n\n /*\n\n * Passes arbitrary bytes of data to an external contract that implements the Callee interface.\n\n * Does not change any asset amounts. This function may be useful for setting certain variables\n\n * on layer-two contracts for certain accounts without having to make a separate Ethereum\n\n * transaction for doing so. Also, the second-layer contracts can ensure that the call is coming\n\n * from an operator of the particular account.\n\n */\n\n struct CallArgs {\n\n Account.Info account;\n\n address callee;\n\n bytes data;\n\n }\n\n\n\n // ============ Helper Functions ============\n\n\n\n function getMarketLayout(\n\n ActionType actionType\n\n )\n\n internal\n\n pure\n\n returns (MarketLayout)\n\n {\n\n if (\n\n actionType == Actions.ActionType.Deposit\n\n || actionType == Actions.ActionType.Withdraw\n\n || actionType == Actions.ActionType.Transfer\n\n ) {\n\n return MarketLayout.OneMarket;\n\n }\n\n else if (actionType == Actions.ActionType.Call) {\n\n return MarketLayout.ZeroMarkets;\n\n }\n\n return MarketLayout.TwoMarkets;\n\n }\n\n\n\n function getAccountLayout(\n\n ActionType actionType\n\n )\n\n internal\n\n pure\n\n returns (AccountLayout)\n\n {\n\n if (\n\n actionType == Actions.ActionType.Transfer\n\n || actionType == Actions.ActionType.Trade\n\n ) {\n\n return AccountLayout.TwoPrimary;\n\n } else if (\n\n actionType == Actions.ActionType.Liquidate\n\n || actionType == Actions.ActionType.Vaporize\n\n ) {\n\n return AccountLayout.PrimaryAndSecondary;\n\n }\n\n return AccountLayout.OnePrimary;\n\n }\n\n\n\n // ============ Parsing Functions ============\n\n\n\n function parseDepositArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (DepositArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Deposit);\n\n return DepositArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n market: args.primaryMarketId,\n\n from: args.otherAddress\n\n });\n\n }\n\n\n\n function parseWithdrawArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (WithdrawArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Withdraw);\n\n return WithdrawArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n market: args.primaryMarketId,\n\n to: args.otherAddress\n\n });\n\n }\n\n\n\n function parseTransferArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (TransferArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Transfer);\n\n return TransferArgs({\n\n amount: args.amount,\n\n accountOne: accounts[args.accountId],\n\n accountTwo: accounts[args.otherAccountId],\n\n market: args.primaryMarketId\n\n });\n\n }\n\n\n\n function parseBuyArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (BuyArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Buy);\n\n return BuyArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n makerMarket: args.primaryMarketId,\n\n takerMarket: args.secondaryMarketId,\n\n exchangeWrapper: args.otherAddress,\n\n orderData: args.data\n\n });\n\n }\n\n\n\n function parseSellArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (SellArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Sell);\n\n return SellArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n takerMarket: args.primaryMarketId,\n\n makerMarket: args.secondaryMarketId,\n\n exchangeWrapper: args.otherAddress,\n\n orderData: args.data\n\n });\n\n }\n\n\n\n function parseTradeArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (TradeArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Trade);\n\n return TradeArgs({\n\n amount: args.amount,\n\n takerAccount: accounts[args.accountId],\n\n makerAccount: accounts[args.otherAccountId],\n\n inputMarket: args.primaryMarketId,\n\n outputMarket: args.secondaryMarketId,\n\n autoTrader: args.otherAddress,\n\n tradeData: args.data\n\n });\n\n }\n\n\n\n function parseLiquidateArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (LiquidateArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Liquidate);\n\n return LiquidateArgs({\n\n amount: args.amount,\n\n solidAccount: accounts[args.accountId],\n\n liquidAccount: accounts[args.otherAccountId],\n\n owedMarket: args.primaryMarketId,\n\n heldMarket: args.secondaryMarketId\n\n });\n\n }\n\n\n\n function parseVaporizeArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (VaporizeArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Vaporize);\n\n return VaporizeArgs({\n\n amount: args.amount,\n\n solidAccount: accounts[args.accountId],\n\n vaporAccount: accounts[args.otherAccountId],\n\n owedMarket: args.primaryMarketId,\n\n heldMarket: args.secondaryMarketId\n\n });\n\n }\n\n\n\n function parseCallArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (CallArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Call);\n\n return CallArgs({\n\n account: accounts[args.accountId],\n\n callee: args.otherAddress,\n\n data: args.data\n\n });\n\n }\n\n}\n\nlibrary Math {\n\n using SafeMath for uint256;\n\n\n\n // ============ Constants ============\n\n\n\n bytes32 constant FILE = \"Math\";\n\n\n\n // ============ Library Functions ============\n\n\n\n /*\n\n * Return target * (numerator / denominator).\n\n */\n\n function getPartial(\n\n uint256 target,\n\n uint256 numerator,\n\n uint256 denominator\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return target.mul(numerator).div(denominator);\n\n }\n\n\n\n /*\n\n * Return target * (numerator / denominator), but rounded up.\n\n */\n\n function getPartialRoundUp(\n\n uint256 target,\n\n uint256 numerator,\n\n uint256 denominator\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n if (target == 0 || numerator == 0) {\n\n // SafeMath will check for zero denominator\n\n return SafeMath.div(0, denominator);\n\n }\n\n return target.mul(numerator).sub(1).div(denominator).add(1);\n\n }\n\n\n\n function to128(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint128)\n\n {\n\n uint128 result = uint128(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint128\"\n\n );\n\n return result;\n\n }\n\n\n\n function to96(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint96)\n\n {\n\n uint96 result = uint96(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint96\"\n\n );\n\n return result;\n\n }\n\n\n\n function to32(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint32)\n\n {\n\n uint32 result = uint32(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint32\"\n\n );\n\n return result;\n\n }\n\n\n\n function min(\n\n uint256 a,\n\n uint256 b\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return a < b ? a : b;\n\n }\n\n\n\n function max(\n\n uint256 a,\n\n uint256 b\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return a > b ? a : b;\n\n }\n\n}\n\nlibrary Require {\n\n\n\n // ============ Constants ============\n\n\n\n uint256 constant ASCII_ZERO = 48; // '0'\n\n uint256 constant ASCII_RELATIVE_ZERO = 87; // 'a' - 10\n\n uint256 constant ASCII_LOWER_EX = 120; // 'x'\n\n bytes2 constant COLON = 0x3a20; // ': '\n\n bytes2 constant COMMA = 0x2c20; // ', '\n\n bytes2 constant LPAREN = 0x203c; // ' <'\n\n byte constant RPAREN = 0x3e; // '>'\n\n uint256 constant FOUR_BIT_MASK = 0xf;\n\n\n\n // ============ Library Functions ============\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason)\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n uint256 payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n uint256 payloadA,\n\n uint256 payloadB\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA,\n\n uint256 payloadB\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA,\n\n uint256 payloadB,\n\n uint256 payloadC\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n COMMA,\n\n stringify(payloadC),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n bytes32 payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n bytes32 payloadA,\n\n uint256 payloadB,\n\n uint256 payloadC\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n COMMA,\n\n stringify(payloadC),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n // ============ Private Functions ============\n\n\n\n function stringifyTruncated(\n\n bytes32 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n // put the input bytes into the result\n\n bytes memory result = abi.encodePacked(input);\n\n\n\n // determine the length of the input by finding the location of the last non-zero byte\n\n for (uint256 i = 32; i > 0; ) {\n\n // reverse-for-loops with unsigned integer\n\n /* solium-disable-next-line security/no-modify-for-iter-var */\n\n i--;\n\n\n\n // find the last non-zero byte in order to determine the length\n\n if (result[i] != 0) {\n\n uint256 length = i + 1;\n\n\n\n /* solium-disable-next-line security/no-inline-assembly */\n\n assembly {\n\n mstore(result, length) // r.length = length;\n\n }\n\n\n\n return result;\n\n }\n\n }\n\n\n\n // all bytes are zero\n\n return new bytes(0);\n\n }\n\n\n\n function stringify(\n\n uint256 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n if (input == 0) {\n\n return \"0\";\n\n }\n\n\n\n // get the final string length\n\n uint256 j = input;\n\n uint256 length;\n\n while (j != 0) {\n\n length++;\n\n j /= 10;\n\n }\n\n\n\n // allocate the string\n\n bytes memory bstr = new bytes(length);\n\n\n\n // populate the string starting with the least-significant character\n\n j = input;\n\n for (uint256 i = length; i > 0; ) {\n\n // reverse-for-loops with unsigned integer\n\n /* solium-disable-next-line security/no-modify-for-iter-var */\n\n i--;\n\n\n\n // take last decimal digit\n\n bstr[i] = byte(uint8(ASCII_ZERO + (j % 10)));\n\n\n\n // remove the last decimal digit\n\n j /= 10;\n\n }\n\n\n\n return bstr;\n\n }\n\n\n\n function stringify(\n\n address input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n uint256 z = uint256(input);\n\n\n\n // addresses are \"0x\" followed by 20 bytes of data which take up 2 characters each\n\n bytes memory result = new bytes(42);\n\n\n\n // populate the result with \"0x\"\n\n result[0] = byte(uint8(ASCII_ZERO));\n\n result[1] = byte(uint8(ASCII_LOWER_EX));\n\n\n\n // for each byte (starting from the lowest byte), populate the result with two characters\n\n for (uint256 i = 0; i < 20; i++) {\n\n // each byte takes two characters\n\n uint256 shift = i * 2;\n\n\n\n // populate the least-significant character\n\n result[41 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n\n\n // populate the most-significant character\n\n result[40 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n }\n\n\n\n return result;\n\n }\n\n\n\n function stringify(\n\n bytes32 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n uint256 z = uint256(input);\n\n\n\n // bytes32 are \"0x\" followed by 32 bytes of data which take up 2 characters each\n\n bytes memory result = new bytes(66);\n\n\n\n // populate the result with \"0x\"\n\n result[0] = byte(uint8(ASCII_ZERO));\n\n result[1] = byte(uint8(ASCII_LOWER_EX));\n\n\n\n // for each byte (starting from the lowest byte), populate the result with two characters\n\n for (uint256 i = 0; i < 32; i++) {\n\n // each byte takes two characters\n\n uint256 shift = i * 2;\n\n\n\n // populate the least-significant character\n\n result[65 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n\n\n // populate the most-significant character\n\n result[64 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n }\n\n\n\n return result;\n\n }\n\n\n\n function char(\n\n uint256 input\n\n )\n\n private\n\n pure\n\n returns (byte)\n\n {\n\n // return ASCII digit (0-9)\n\n if (input < 10) {\n\n return byte(uint8(input + ASCII_ZERO));\n\n }\n\n\n\n // return ASCII letter (a-f)\n\n return byte(uint8(input + ASCII_RELATIVE_ZERO));\n\n }\n\n}\n\nlibrary Types {\n\n using Math for uint256;\n\n\n\n // ============ AssetAmount ============\n\n\n\n enum AssetDenomination {\n\n Wei, // the amount is denominated in wei\n\n Par // the amount is denominated in par\n\n }\n\n\n\n enum AssetReference {\n\n Delta, // the amount is given as a delta from the current value\n\n Target // the amount is given as an exact number to end up at\n\n }\n\n\n\n struct AssetAmount {\n\n bool sign; // true if positive\n\n AssetDenomination denomination;\n\n AssetReference ref;\n\n uint256 value;\n\n }\n\n\n\n // ============ Par (Principal Amount) ============\n\n\n\n // Total borrow and supply values for a market\n\n struct TotalPar {\n\n uint128 borrow;\n\n uint128 supply;\n\n }\n\n\n\n // Individual principal amount for an account\n\n struct Par {\n\n bool sign; // true if positive\n\n uint128 value;\n\n }\n\n\n\n function zeroPar()\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return Par({\n\n sign: false,\n\n value: 0\n\n });\n\n }\n\n\n\n function sub(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return add(a, negative(b));\n\n }\n\n\n\n function add(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n Par memory result;\n\n if (a.sign == b.sign) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.add(a.value, b.value).to128();\n\n } else {\n\n if (a.value >= b.value) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.sub(a.value, b.value).to128();\n\n } else {\n\n result.sign = b.sign;\n\n result.value = SafeMath.sub(b.value, a.value).to128();\n\n }\n\n }\n\n return result;\n\n }\n\n\n\n function equals(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n if (a.value == b.value) {\n\n if (a.value == 0) {\n\n return true;\n\n }\n\n return a.sign == b.sign;\n\n }\n\n return false;\n\n }\n\n\n\n function negative(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return Par({\n\n sign: !a.sign,\n\n value: a.value\n\n });\n\n }\n\n\n\n function isNegative(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return !a.sign && a.value > 0;\n\n }\n\n\n\n function isPositive(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.sign && a.value > 0;\n\n }\n\n\n\n function isZero(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.value == 0;\n\n }\n\n\n\n // ============ Wei (Token Amount) ============\n\n\n\n // Individual token amount for an account\n\n struct Wei {\n\n bool sign; // true if positive\n\n uint256 value;\n\n }\n\n\n\n function zeroWei()\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return Wei({\n\n sign: false,\n\n value: 0\n\n });\n\n }\n\n\n\n function sub(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return add(a, negative(b));\n\n }\n\n\n\n function add(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n Wei memory result;\n\n if (a.sign == b.sign) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.add(a.value, b.value);\n\n } else {\n\n if (a.value >= b.value) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.sub(a.value, b.value);\n\n } else {\n\n result.sign = b.sign;\n\n result.value = SafeMath.sub(b.value, a.value);\n\n }\n\n }\n\n return result;\n\n }\n\n\n\n function equals(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n if (a.value == b.value) {\n\n if (a.value == 0) {\n\n return true;\n\n }\n\n return a.sign == b.sign;\n\n }\n\n return false;\n\n }\n\n\n\n function negative(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return Wei({\n\n sign: !a.sign,\n\n value: a.value\n\n });\n\n }\n\n\n\n function isNegative(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return !a.sign && a.value > 0;\n\n }\n\n\n\n function isPositive(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.sign && a.value > 0;\n\n }\n\n\n\n function isZero(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.value == 0;\n\n }\n\n}\n\ncontract FulcrumSavingsProtocol is ProtocolInterface, DSAuth {\n\n\n\n address public constant NEW_IDAI_ADDRESS = 0x493C57C4763932315A328269E1ADaD09653B9081;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public savingsProxy;\n\n uint public decimals = 10 ** 18;\n\n\n\n function addSavingsProxy(address _savingsProxy) public auth {\n\n savingsProxy = _savingsProxy;\n\n }\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n // approve dai to Fulcrum\n\n ERC20(DAI_ADDRESS).approve(NEW_IDAI_ADDRESS, uint(-1));\n\n\n\n // mint iDai\n\n ITokenInterface(NEW_IDAI_ADDRESS).mint(_user, _amount);\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n // transfer all users tokens to our contract\n\n require(ERC20(NEW_IDAI_ADDRESS).transferFrom(_user, address(this), ITokenInterface(NEW_IDAI_ADDRESS).balanceOf(_user)));\n\n\n\n // approve iDai to that contract\n\n ERC20(NEW_IDAI_ADDRESS).approve(NEW_IDAI_ADDRESS, uint(-1));\n\n uint tokenPrice = ITokenInterface(NEW_IDAI_ADDRESS).tokenPrice();\n\n\n\n // get dai from iDai contract\n\n ITokenInterface(NEW_IDAI_ADDRESS).burn(_user, _amount * decimals / tokenPrice);\n\n\n\n // return all remaining tokens back to user\n\n require(ERC20(NEW_IDAI_ADDRESS).transfer(_user, ITokenInterface(NEW_IDAI_ADDRESS).balanceOf(address(this))));\n\n }\n\n}\n\ncontract ShifterRegistry is AdminAuth {\n\n mapping (string => address) public contractAddresses;\n\n bool public finalized;\n\n\n\n function changeContractAddr(string memory _contractName, address _protoAddr) public onlyOwner {\n\n require(!finalized);\n\n contractAddresses[_contractName] = _protoAddr;\n\n }\n\n\n\n function lock() public onlyOwner {\n\n finalized = true;\n\n }\n\n\n\n function getAddr(string memory _contractName) public view returns (address contractAddr) {\n\n contractAddr = contractAddresses[_contractName];\n\n\n\n require(contractAddr != address(0), \"No contract address registred\");\n\n }\n\n\n\n}\n\nlibrary Address {\n\n function isContract(address account) internal view returns (bool) {\n\n // According to EIP-1052, 0x0 is the value returned for not-yet created accounts\n\n // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned\n\n // for accounts without code, i.e. `keccak256('')`\n\n bytes32 codehash;\n\n bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly { codehash := extcodehash(account) }\n\n return (codehash != accountHash && codehash != 0x0);\n\n }\n\n\n\n function sendValue(address payable recipient, uint256 amount) internal {\n\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n\n (bool success, ) = recipient.call{ value: amount }(\"\");\n\n require(success, \"Address: unable to send value, recipient may have reverted\");\n\n }\n\n\n\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n\n return functionCall(target, data, \"Address: low-level call failed\");\n\n }\n\n\n\n function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n\n return _functionCallWithValue(target, data, 0, errorMessage);\n\n }\n\n\n\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n\n }\n\n\n\n function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\n\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n\n return _functionCallWithValue(target, data, value, errorMessage);\n\n }\n\n\n\n function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\n\n require(isContract(target), \"Address: call to non-contract\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls\n\n (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\n\n if (success) {\n\n return returndata;\n\n } else {\n\n // Look for revert reason and bubble it up if present\n\n if (returndata.length > 0) {\n\n // The easiest way to bubble the revert reason is using memory via assembly\n\n\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly {\n\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n\n }\n\n } else {\n\n revert(errorMessage);\n\n }\n\n }\n\n }\n\n}\n\ncontract BotRegistry is AdminAuth {\n\n\n\n mapping (address => bool) public botList;\n\n\n\n constructor() public {\n\n botList[0x776B4a13093e30B05781F97F6A4565B6aa8BE330] = true;\n\n\n\n botList[0xAED662abcC4FA3314985E67Ea993CAD064a7F5cF] = true;\n\n botList[0xa5d330F6619d6bF892A5B87D80272e1607b3e34D] = true;\n\n botList[0x5feB4DeE5150B589a7f567EA7CADa2759794A90A] = true;\n\n botList[0x7ca06417c1d6f480d3bB195B80692F95A6B66158] = true;\n\n }\n\n\n\n function setBot(address _botAddr, bool _state) public onlyOwner {\n\n botList[_botAddr] = _state;\n\n }\n\n\n\n}\n\ncontract DFSProxy is Auth {\n\n string public constant NAME = \"DFSProxy\";\n\n string public constant VERSION = \"v0.1\";\n\n\n\n mapping(address => mapping(uint => bool)) public nonces;\n\n\n\n // --- EIP712 niceties ---\n\n bytes32 public DOMAIN_SEPARATOR;\n\n bytes32 public constant PERMIT_TYPEHASH = keccak256(\"callProxy(address _user,address _proxy,address _contract,bytes _txData,uint256 _nonce)\");\n\n\n\n constructor(uint256 chainId_) public {\n\n DOMAIN_SEPARATOR = keccak256(abi.encode(\n\n keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"),\n\n keccak256(bytes(NAME)),\n\n keccak256(bytes(VERSION)),\n\n chainId_,\n\n address(this)\n\n ));\n\n }\n\n\n\n function callProxy(address _user, address _proxy, address _contract, bytes calldata _txData, uint256 _nonce,\n\n uint8 _v, bytes32 _r, bytes32 _s) external payable onlyAuthorized\n\n {\n\n bytes32 digest =\n\n keccak256(abi.encodePacked(\n\n \"\\x19\\x01\",\n\n DOMAIN_SEPARATOR,\n\n keccak256(abi.encode(PERMIT_TYPEHASH,\n\n _user,\n\n _proxy,\n\n _contract,\n\n _txData,\n\n _nonce))\n\n ));\n\n\n\n // user must be proxy owner\n\n require(DSProxyInterface(_proxy).owner() == _user);\n\n require(_user == ecrecover(digest, _v, _r, _s), \"DFSProxy/user-not-valid\");\n\n require(!nonces[_user][_nonce], \"DFSProxy/invalid-nonce\");\n\n \n\n nonces[_user][_nonce] = true;\n\n\n\n DSProxyInterface(_proxy).execute{value: msg.value}(_contract, _txData);\n\n }\n\n}\n\ncontract DebugInfo {\n\n\n\n mapping (string => uint) public uintValues;\n\n mapping (string => address) public addrValues;\n\n mapping (string => string) public stringValues;\n\n mapping (string => bytes32) public bytes32Values;\n\n\n\n function logUint(string memory _id, uint _value) public {\n\n uintValues[_id] = _value;\n\n }\n\n\n\n function logAddr(string memory _id, address _value) public {\n\n addrValues[_id] = _value;\n\n }\n\n\n\n function logString(string memory _id, string memory _value) public {\n\n stringValues[_id] = _value;\n\n }\n\n\n\n function logBytes32(string memory _id, bytes32 _value) public {\n\n bytes32Values[_id] = _value;\n\n }\n\n}\n\ncontract Discount {\n\n address public owner;\n\n mapping(address => CustomServiceFee) public serviceFees;\n\n\n\n uint256 constant MAX_SERVICE_FEE = 400;\n\n\n\n struct CustomServiceFee {\n\n bool active;\n\n uint256 amount;\n\n }\n\n\n\n constructor() public {\n\n owner = msg.sender;\n\n }\n\n\n\n function isCustomFeeSet(address _user) public view returns (bool) {\n\n return serviceFees[_user].active;\n\n }\n\n\n\n function getCustomServiceFee(address _user) public view returns (uint256) {\n\n return serviceFees[_user].amount;\n\n }\n\n\n\n function setServiceFee(address _user, uint256 _fee) public {\n\n require(msg.sender == owner, \"Only owner\");\n\n require(_fee >= MAX_SERVICE_FEE || _fee == 0);\n\n\n\n serviceFees[_user] = CustomServiceFee({active: true, amount: _fee});\n\n }\n\n\n\n function disableServiceFee(address _user) public {\n\n require(msg.sender == owner, \"Only owner\");\n\n\n\n serviceFees[_user] = CustomServiceFee({active: false, amount: 0});\n\n }\n\n}\n\ncontract DydxFlashLoanBase {\n\n using SafeMath for uint256;\n\n\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n function _getMarketIdFromTokenAddress(address token)\n\n internal\n\n view\n\n returns (uint256)\n\n {\n\n return 0;\n\n }\n\n\n\n function _getRepaymentAmountInternal(uint256 amount)\n\n internal\n\n view\n\n returns (uint256)\n\n {\n\n // Needs to be overcollateralize\n\n // Needs to provide +2 wei to be safe\n\n return amount.add(2);\n\n }\n\n\n\n function _getAccountInfo() internal view returns (Account.Info memory) {\n\n return Account.Info({owner: address(this), number: 1});\n\n }\n\n\n\n function _getWithdrawAction(uint marketId, uint256 amount, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Withdraw,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: amount\n\n }),\n\n primaryMarketId: marketId,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: \"\"\n\n });\n\n }\n\n\n\n function _getCallAction(bytes memory data, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Call,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: 0\n\n }),\n\n primaryMarketId: 0,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: data\n\n });\n\n }\n\n\n\n function _getDepositAction(uint marketId, uint256 amount, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Deposit,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: true,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: amount\n\n }),\n\n primaryMarketId: marketId,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: \"\"\n\n });\n\n }\n\n}\n\ncontract ExchangeDataParser {\n\n function decodeExchangeData(\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (address[4] memory, uint[4] memory, bytes memory) {\n\n return (\n\n [exchangeData.srcAddr, exchangeData.destAddr, exchangeData.exchangeAddr, exchangeData.wrapper],\n\n [exchangeData.srcAmount, exchangeData.destAmount, exchangeData.minPrice, exchangeData.price0x],\n\n exchangeData.callData\n\n );\n\n }\n\n\n\n function encodeExchangeData(\n\n address[4] memory exAddr, uint[4] memory exNum, bytes memory callData\n\n ) internal pure returns (SaverExchangeCore.ExchangeData memory) {\n\n return SaverExchangeCore.ExchangeData({\n\n srcAddr: exAddr[0],\n\n destAddr: exAddr[1],\n\n srcAmount: exNum[0],\n\n destAmount: exNum[1],\n\n minPrice: exNum[2],\n\n wrapper: exAddr[3],\n\n exchangeAddr: exAddr[2],\n\n callData: callData,\n\n price0x: exNum[3]\n\n });\n\n }\n\n}\n\ninterface IFlashLoanReceiver {\n\n function executeOperation(address _reserve, uint256 _amount, uint256 _fee, bytes calldata _params) external;\n\n}\n\nabstract contract ILendingPoolAddressesProvider {\n\n\n\n function getLendingPool() public view virtual returns (address);\n\n function setLendingPoolImpl(address _pool) public virtual;\n\n\n\n function getLendingPoolCore() public virtual view returns (address payable);\n\n function setLendingPoolCoreImpl(address _lendingPoolCore) public virtual;\n\n\n\n function getLendingPoolConfigurator() public virtual view returns (address);\n\n function setLendingPoolConfiguratorImpl(address _configurator) public virtual;\n\n\n\n function getLendingPoolDataProvider() public virtual view returns (address);\n\n function setLendingPoolDataProviderImpl(address _provider) public virtual;\n\n\n\n function getLendingPoolParametersProvider() public virtual view returns (address);\n\n function setLendingPoolParametersProviderImpl(address _parametersProvider) public virtual;\n\n\n\n function getTokenDistributor() public virtual view returns (address);\n\n function setTokenDistributor(address _tokenDistributor) public virtual;\n\n\n\n\n\n function getFeeProvider() public virtual view returns (address);\n\n function setFeeProviderImpl(address _feeProvider) public virtual;\n\n\n\n function getLendingPoolLiquidationManager() public virtual view returns (address);\n\n function setLendingPoolLiquidationManager(address _manager) public virtual;\n\n\n\n function getLendingPoolManager() public virtual view returns (address);\n\n function setLendingPoolManager(address _lendingPoolManager) public virtual;\n\n\n\n function getPriceOracle() public virtual view returns (address);\n\n function setPriceOracle(address _priceOracle) public virtual;\n\n\n\n function getLendingRateOracle() public view virtual returns (address);\n\n function setLendingRateOracle(address _lendingRateOracle) public virtual;\n\n}\n\nlibrary EthAddressLib {\n\n\n\n function ethAddress() internal pure returns(address) {\n\n return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n }\n\n}\n\nabstract contract FlashLoanReceiverBase is IFlashLoanReceiver {\n\n\n\n using SafeERC20 for ERC20;\n\n using SafeMath for uint256;\n\n\n\n ILendingPoolAddressesProvider public addressesProvider;\n\n\n\n constructor(ILendingPoolAddressesProvider _provider) public {\n\n addressesProvider = _provider;\n\n }\n\n\n\n receive () external virtual payable {}\n\n\n\n function transferFundsBackToPoolInternal(address _reserve, uint256 _amount) internal {\n\n\n\n address payable core = addressesProvider.getLendingPoolCore();\n\n\n\n transferInternal(core,_reserve, _amount);\n\n }\n\n\n\n function transferInternal(address payable _destination, address _reserve, uint256 _amount) internal {\n\n if(_reserve == EthAddressLib.ethAddress()) {\n\n //solium-disable-next-line\n\n _destination.call{value: _amount}(\"\");\n\n return;\n\n }\n\n\n\n ERC20(_reserve).safeTransfer(_destination, _amount);\n\n\n\n\n\n }\n\n\n\n function getBalanceInternal(address _target, address _reserve) internal view returns(uint256) {\n\n if(_reserve == EthAddressLib.ethAddress()) {\n\n\n\n return _target.balance;\n\n }\n\n\n\n return ERC20(_reserve).balanceOf(_target);\n\n\n\n }\n\n}\n\ncontract GasBurner {\n\n // solhint-disable-next-line const-name-snakecase\n\n GasTokenInterface public constant gasToken = GasTokenInterface(0x0000000000b3F879cb30FE243b4Dfee438691c04);\n\n\n\n modifier burnGas(uint _amount) {\n\n if (gasToken.balanceOf(address(this)) >= _amount) {\n\n gasToken.free(_amount);\n\n }\n\n\n\n _;\n\n }\n\n}\n\nlibrary SafeERC20 {\n\n using SafeMath for uint256;\n\n using Address for address;\n\n\n\n function safeTransfer(ERC20 token, address to, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n\n }\n\n\n\n function safeTransferFrom(ERC20 token, address from, address to, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n\n }\n\n\n\n /**\n\n * @dev Deprecated. This function has issues similar to the ones found in\n\n * {IERC20-approve}, and its usage is discouraged.\n\n */\n\n function safeApprove(ERC20 token, address spender, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n\n }\n\n\n\n function safeIncreaseAllowance(ERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).add(value);\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n function safeDecreaseAllowance(ERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).sub(value, \"SafeERC20: decreased allowance below zero\");\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n function _callOptionalReturn(ERC20 token, bytes memory data) private {\n\n\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n\n if (returndata.length > 0) { // Return data is optional\n\n // solhint-disable-next-line max-line-length\n\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n\n }\n\n }\n\n}\n\nlibrary SafeMath {\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n\n\n return c;\n\n }\n\n\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return sub(a, b, \"SafeMath: subtraction overflow\");\n\n }\n\n\n\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n\n\n return c;\n\n }\n\n\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n\n // benefit is lost if 'b' is also tested.\n\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n\n if (a == 0) {\n\n return 0;\n\n }\n\n\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n\n\n return c;\n\n }\n\n\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return div(a, b, \"SafeMath: division by zero\");\n\n }\n\n\n\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n\n\n return c;\n\n }\n\n\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return mod(a, b, \"SafeMath: modulo by zero\");\n\n }\n\n\n\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b != 0, errorMessage);\n\n return a % b;\n\n }\n\n}\n\ncontract ZrxAllowlist is AdminAuth {\n\n\n\n mapping (address => bool) public zrxAllowlist;\n\n mapping(address => bool) private nonPayableAddrs;\n\n\n\n constructor() public {\n\n zrxAllowlist[0x6958F5e95332D93D21af0D7B9Ca85B8212fEE0A5] = true;\n\n zrxAllowlist[0x61935CbDd02287B511119DDb11Aeb42F1593b7Ef] = true;\n\n zrxAllowlist[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;\n\n zrxAllowlist[0x080bf510FCbF18b91105470639e9561022937712] = true;\n\n\n\n nonPayableAddrs[0x080bf510FCbF18b91105470639e9561022937712] = true;\n\n }\n\n\n\n function setAllowlistAddr(address _zrxAddr, bool _state) public onlyOwner {\n\n zrxAllowlist[_zrxAddr] = _state;\n\n }\n\n\n\n function isZrxAddr(address _zrxAddr) public view returns (bool) {\n\n return zrxAllowlist[_zrxAddr];\n\n }\n\n\n\n function addNonPayableAddr(address _nonPayableAddr) public onlyOwner {\n\n\t\tnonPayableAddrs[_nonPayableAddr] = true;\n\n\t}\n\n\n\n\tfunction removeNonPayableAddr(address _nonPayableAddr) public onlyOwner {\n\n\t\tnonPayableAddrs[_nonPayableAddr] = false;\n\n\t}\n\n\n\n\tfunction isNonPayableAddr(address _addr) public view returns(bool) {\n\n\t\treturn nonPayableAddrs[_addr];\n\n\t}\n\n}\n\ncontract AaveBasicProxy is GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant AAVE_LENDING_POOL_ADDRESSES = 0x24a42fD28C976A61Df5D00D0599C34c4f90748c8;\n\n\n\n uint16 public constant AAVE_REFERRAL_CODE = 64;\n\n\n\n /// @notice User deposits tokens to the Aave protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n function deposit(address _tokenAddr, uint256 _amount) public burnGas(5) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint ethValue = _amount;\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n ethValue = 0;\n\n }\n\n\n\n ILendingPool(lendingPool).deposit{value: ethValue}(_tokenAddr, _amount, AAVE_REFERRAL_CODE);\n\n\n\n setUserUseReserveAsCollateralIfNeeded(_tokenAddr);\n\n }\n\n\n\n /// @notice User withdraws tokens from the Aave protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _aTokenAddr ATokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _wholeAmount If true we will take the whole amount on chain\n\n function withdraw(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeAmount) public burnGas(8) {\n\n uint256 amount = _wholeAmount ? ERC20(_aTokenAddr).balanceOf(address(this)) : _amount;\n\n\n\n IAToken(_aTokenAddr).redeem(amount);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @notice User borrows tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _type Send 1 for variable rate and 2 for fixed rate\n\n function borrow(address _tokenAddr, uint256 _amount, uint256 _type) public burnGas(8) {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).borrow(_tokenAddr, _amount, _type, AAVE_REFERRAL_CODE);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _aTokenAddr ATokens to be paybacked\n\n /// @param _amount Amount of tokens to be payed back\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeDebt) public burnGas(3) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint256 amount = _amount;\n\n\n\n (,uint256 borrowAmount,,,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, address(this));\n\n\n\n if (_wholeDebt) {\n\n amount = borrowAmount + originationFee;\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), amount);\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n }\n\n\n\n ILendingPool(lendingPool).repay{value: msg.value}(_tokenAddr, amount, payable(address(this)));\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _aTokenAddr ATokens to be paybacked\n\n /// @param _amount Amount of tokens to be payed back\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function paybackOnBehalf(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeDebt, address payable _onBehalf) public burnGas(3) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint256 amount = _amount;\n\n\n\n (,uint256 borrowAmount,,,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, _onBehalf);\n\n\n\n if (_wholeDebt) {\n\n amount = borrowAmount + originationFee;\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), amount);\n\n if (originationFee > 0) {\n\n ERC20(_tokenAddr).safeTransfer(_onBehalf, originationFee);\n\n }\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n }\n\n\n\n ILendingPool(lendingPool).repay{value: msg.value}(_tokenAddr, amount, _onBehalf);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n uint256 amount = _tokenAddr == ETH_ADDR ? address(this).balance : ERC20(_tokenAddr).balanceOf(address(this));\n\n\n\n if (amount > 0) {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, amount);\n\n } else {\n\n msg.sender.transfer(amount);\n\n }\n\n }\n\n }\n\n\n\n /// @notice Approves token contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _caller Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _caller) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_caller, 0);\n\n ERC20(_tokenAddr).safeApprove(_caller, uint256(-1));\n\n }\n\n }\n\n\n\n function setUserUseReserveAsCollateralIfNeeded(address _tokenAddr) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n (,,,,,,,,,bool collateralEnabled) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, address(this));\n\n\n\n if (!collateralEnabled) {\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_tokenAddr, true);\n\n }\n\n }\n\n\n\n function setUserUseReserveAsCollateral(address _tokenAddr, bool _true) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_tokenAddr, _true);\n\n }\n\n\n\n function swapBorrowRateMode(address _reserve) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).swapBorrowRateMode(_reserve);\n\n }\n\n}\n\ncontract AaveLoanInfo is AaveSafetyRatio {\n\n\n\n\tstruct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint256[] collAmounts;\n\n uint256[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address aTokenAddress;\n\n address underlyingTokenAddress;\n\n uint256 collateralFactor;\n\n uint256 price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n \taddress aTokenAddress;\n\n address underlyingTokenAddress;\n\n uint256 supplyRate;\n\n uint256 borrowRate;\n\n uint256 borrowRateStable;\n\n uint256 totalSupply;\n\n uint256 availableLiquidity;\n\n uint256 totalBorrow;\n\n uint256 collateralFactor;\n\n uint256 liquidationRatio;\n\n uint256 price;\n\n bool usageAsCollateralEnabled;\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint256) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches Aave prices for tokens\n\n /// @param _tokens Arr. of tokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _tokens) public view returns (uint256[] memory prices) {\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n prices = new uint[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; ++i) {\n\n prices[i] = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches Aave collateral factors for tokens\n\n /// @param _tokens Arr. of tokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _tokens) public view returns (uint256[] memory collFactors) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n collFactors = new uint256[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; ++i) {\n\n \t(,collFactors[i],,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_tokens[i]);\n\n }\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _tokens) public view returns (uint256[] memory balances, uint256[] memory borrows, bool[] memory enabledAsCollateral) {\n\n \taddress lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n balances = new uint256[](_tokens.length);\n\n borrows = new uint256[](_tokens.length);\n\n enabledAsCollateral = new bool[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; i++) {\n\n address asset = _tokens[i];\n\n\n\n (balances[i], borrows[i],,,,,,,,enabledAsCollateral[i]) = ILendingPool(lendingPoolAddress).getUserReserveData(asset, _user);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for an aave user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint256[] memory ratios) {\n\n ratios = new uint256[](_users.length);\n\n\n\n for (uint256 i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about reserves\n\n /// @param _tokenAddresses Array of tokens addresses\n\n /// @return tokens Array of reserves infomartion\n\n function getTokensInfo(address[] memory _tokenAddresses) public view returns(TokenInfo[] memory tokens) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n \taddress priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n tokens = new TokenInfo[](_tokenAddresses.length);\n\n\n\n for (uint256 i = 0; i < _tokenAddresses.length; ++i) {\n\n \t(,uint256 ltv,,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_tokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n aTokenAddress: ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(_tokenAddresses[i]),\n\n underlyingTokenAddress: _tokenAddresses[i],\n\n collateralFactor: ltv,\n\n price: IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about reserves\n\n /// @param _tokenAddresses Array of token addresses\n\n /// @return tokens Array of reserves infomartion\n\n function getFullTokensInfo(address[] memory _tokenAddresses) public view returns(TokenInfoFull[] memory tokens) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n \taddress priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n tokens = new TokenInfoFull[](_tokenAddresses.length);\n\n\n\n for (uint256 i = 0; i < _tokenAddresses.length; ++i) {\n\n \t(,uint256 ltv, uint256 liqRatio, bool usageAsCollateralEnabled) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_tokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n \taTokenAddress: ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(_tokenAddresses[i]),\n\n underlyingTokenAddress: _tokenAddresses[i],\n\n supplyRate: ILendingPool(lendingPoolCoreAddress).getReserveCurrentLiquidityRate(_tokenAddresses[i]),\n\n borrowRate: ILendingPool(lendingPoolCoreAddress).getReserveCurrentVariableBorrowRate(_tokenAddresses[i]),\n\n borrowRateStable: ILendingPool(lendingPoolCoreAddress).getReserveCurrentStableBorrowRate(_tokenAddresses[i]),\n\n totalSupply: ILendingPool(lendingPoolCoreAddress).getReserveTotalLiquidity(_tokenAddresses[i]),\n\n availableLiquidity: ILendingPool(lendingPoolCoreAddress).getReserveAvailableLiquidity(_tokenAddresses[i]),\n\n totalBorrow: ILendingPool(lendingPoolCoreAddress).getReserveTotalBorrowsVariable(_tokenAddresses[i]),\n\n collateralFactor: ltv,\n\n liquidationRatio: liqRatio,\n\n price: IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddresses[i]),\n\n usageAsCollateralEnabled: usageAsCollateralEnabled\n\n });\n\n }\n\n }\n\n\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in ether\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n address[] memory reserves = ILendingPool(lendingPoolAddress).getReserves();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](reserves.length),\n\n borrowAddr: new address[](reserves.length),\n\n collAmounts: new uint[](reserves.length),\n\n borrowAmounts: new uint[](reserves.length)\n\n });\n\n\n\n uint64 collPos = 0;\n\n uint64 borrowPos = 0;\n\n\n\n for (uint64 i = 0; i < reserves.length; i++) {\n\n address reserve = reserves[i];\n\n\n\n (uint256 aTokenBalance, uint256 borrowBalance,,,,,,,,) = ILendingPool(lendingPoolAddress).getUserReserveData(reserve, _user);\n\n uint256 price = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(reserves[i]);\n\n\n\n if (aTokenBalance > 0) {\n\n \tuint256 userTokenBalanceEth = wmul(aTokenBalance, price) * (10 ** (18 - _getDecimals(reserve)));\n\n \tdata.collAddr[collPos] = reserve;\n\n data.collAmounts[collPos] = userTokenBalanceEth;\n\n collPos++;\n\n \t}\n\n\n\n // Sum up debt in Eth\n\n if (borrowBalance > 0) {\n\n \tuint256 userBorrowBalanceEth = wmul(borrowBalance, price) * (10 ** (18 - _getDecimals(reserve)));\n\n data.borrowAddr[borrowPos] = reserve;\n\n data.borrowAmounts[borrowPos] = userBorrowBalanceEth;\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in ether\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n}\n\ncontract AaveMonitor is AdminAuth, DSMath, AaveSafetyRatio, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n enum Method { Boost, Repay }\n\n\n\n uint public REPAY_GAS_TOKEN = 19;\n\n uint public BOOST_GAS_TOKEN = 19;\n\n\n\n uint public MAX_GAS_PRICE = 200000000000; // 200 gwei\n\n\n\n uint public REPAY_GAS_COST = 2500000;\n\n uint public BOOST_GAS_COST = 2500000;\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n AaveMonitorProxy public aaveMonitorProxy;\n\n AaveSubscriptions public subscriptionsContract;\n\n address public aaveSaverProxy;\n\n\n\n DefisaverLogger public logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n /// @param _aaveMonitorProxy Proxy contracts that actually is authorized to call DSProxy\n\n /// @param _subscriptions Subscriptions contract for Aave positions\n\n /// @param _aaveSaverProxy Contract that actually performs Repay/Boost\n\n constructor(address _aaveMonitorProxy, address _subscriptions, address _aaveSaverProxy) public {\n\n aaveMonitorProxy = AaveMonitorProxy(_aaveMonitorProxy);\n\n subscriptionsContract = AaveSubscriptions(_subscriptions);\n\n aaveSaverProxy = _aaveSaverProxy;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _user The actual address that owns the Aave position\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address _user\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n aaveMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n aaveSaverProxy,\n\n abi.encodeWithSignature(\n\n \"repay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\",\n\n _exData,\n\n gasCost\n\n )\n\n );\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticAaveRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _user The actual address that owns the Aave position\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address _user\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n aaveMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n aaveSaverProxy,\n\n abi.encodeWithSignature(\n\n \"boost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\",\n\n _exData,\n\n gasCost\n\n )\n\n );\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticAaveBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by AaveMonitor to enforce the min/max check\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Boolean if it can be called and the ratio\n\n function canCall(Method _method, address _user) public view returns(bool, uint) {\n\n bool subscribed = subscriptionsContract.isSubscribed(_user);\n\n AaveSubscriptions.AaveHolder memory holder = subscriptionsContract.getHolder(_user);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Boolean if the recent action preformed correctly and the ratio\n\n function ratioGoodAfter(Method _method, address _user) public view returns(bool, uint) {\n\n AaveSubscriptions.AaveHolder memory holder;\n\n\n\n holder= subscriptionsContract.getHolder(_user);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change max gas price\n\n /// @param _maxGasPrice New max gas price\n\n function changeMaxGasPrice(uint _maxGasPrice) public onlyOwner {\n\n require(_maxGasPrice < 500000000000);\n\n\n\n MAX_GAS_PRICE = _maxGasPrice;\n\n }\n\n\n\n /// @notice Allows owner to change gas token amount\n\n /// @param _gasTokenAmount New gas token amount\n\n /// @param _repay true if repay gas token, false if boost gas token\n\n function changeGasTokenAmount(uint _gasTokenAmount, bool _repay) public onlyOwner {\n\n if (_repay) {\n\n REPAY_GAS_TOKEN = _gasTokenAmount;\n\n } else {\n\n BOOST_GAS_TOKEN = _gasTokenAmount;\n\n }\n\n }\n\n}\n\ncontract AaveMonitorProxy is AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint public CHANGE_PERIOD;\n\n address public monitor;\n\n address public newMonitor;\n\n address public lastMonitor;\n\n uint public changeRequestedTimestamp;\n\n\n\n mapping(address => bool) public allowed;\n\n\n\n event MonitorChangeInitiated(address oldMonitor, address newMonitor);\n\n event MonitorChangeCanceled();\n\n event MonitorChangeFinished(address monitor);\n\n event MonitorChangeReverted(address monitor);\n\n\n\n // if someone who is allowed become malicious, owner can't be changed\n\n modifier onlyAllowed() {\n\n require(allowed[msg.sender] || msg.sender == owner);\n\n _;\n\n }\n\n\n\n modifier onlyMonitor() {\n\n require (msg.sender == monitor);\n\n _;\n\n }\n\n\n\n constructor(uint _changePeriod) public {\n\n CHANGE_PERIOD = _changePeriod * 1 days;\n\n }\n\n\n\n /// @notice Only monitor contract is able to call execute on users proxy\n\n /// @param _owner Address of cdp owner (users DSProxy address)\n\n /// @param _aaveSaverProxy Address of AaveSaverProxy\n\n /// @param _data Data to send to AaveSaverProxy\n\n function callExecute(address _owner, address _aaveSaverProxy, bytes memory _data) public payable onlyMonitor {\n\n // execute reverts if calling specific method fails\n\n DSProxyInterface(_owner).execute{value: msg.value}(_aaveSaverProxy, _data);\n\n\n\n // return if anything left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Allowed users are able to set Monitor contract without any waiting period first time\n\n /// @param _monitor Address of Monitor contract\n\n function setMonitor(address _monitor) public onlyAllowed {\n\n require(monitor == address(0));\n\n monitor = _monitor;\n\n }\n\n\n\n /// @notice Allowed users are able to start procedure for changing monitor\n\n /// @dev after CHANGE_PERIOD needs to call confirmNewMonitor to actually make a change\n\n /// @param _newMonitor address of new monitor\n\n function changeMonitor(address _newMonitor) public onlyAllowed {\n\n require(changeRequestedTimestamp == 0);\n\n\n\n changeRequestedTimestamp = now;\n\n lastMonitor = monitor;\n\n newMonitor = _newMonitor;\n\n\n\n emit MonitorChangeInitiated(lastMonitor, newMonitor);\n\n }\n\n\n\n /// @notice At any point allowed users are able to cancel monitor change\n\n function cancelMonitorChange() public onlyAllowed {\n\n require(changeRequestedTimestamp > 0);\n\n\n\n changeRequestedTimestamp = 0;\n\n newMonitor = address(0);\n\n\n\n emit MonitorChangeCanceled();\n\n }\n\n\n\n /// @notice Anyone is able to confirm new monitor after CHANGE_PERIOD if process is started\n\n function confirmNewMonitor() public onlyAllowed {\n\n require((changeRequestedTimestamp + CHANGE_PERIOD) < now);\n\n require(changeRequestedTimestamp != 0);\n\n require(newMonitor != address(0));\n\n\n\n monitor = newMonitor;\n\n newMonitor = address(0);\n\n changeRequestedTimestamp = 0;\n\n\n\n emit MonitorChangeFinished(monitor);\n\n }\n\n\n\n /// @notice Its possible to revert monitor to last used monitor\n\n function revertMonitor() public onlyAllowed {\n\n require(lastMonitor != address(0));\n\n\n\n monitor = lastMonitor;\n\n\n\n emit MonitorChangeReverted(monitor);\n\n }\n\n\n\n\n\n /// @notice Allowed users are able to add new allowed user\n\n /// @param _user Address of user that will be allowed\n\n function addAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = true;\n\n }\n\n\n\n /// @notice Allowed users are able to remove allowed user\n\n /// @dev owner is always allowed even if someone tries to remove it from allowed mapping\n\n /// @param _user Address of allowed user\n\n function removeAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = false;\n\n }\n\n\n\n function setChangePeriod(uint _periodInDays) public onlyAllowed {\n\n require(_periodInDays * 1 days > CHANGE_PERIOD);\n\n\n\n CHANGE_PERIOD = _periodInDays * 1 days;\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n /// @param _token address of token to withdraw balance\n\n function withdrawToken(address _token) public onlyOwner {\n\n uint balance = ERC20(_token).balanceOf(address(this));\n\n ERC20(_token).safeTransfer(msg.sender, balance);\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n function withdrawEth() public onlyOwner {\n\n uint balance = address(this).balance;\n\n msg.sender.transfer(balance);\n\n }\n\n}\n\ncontract AaveSubscriptions is AdminAuth {\n\n\n\n struct AaveHolder {\n\n address user;\n\n uint128 minRatio;\n\n uint128 maxRatio;\n\n uint128 optimalRatioBoost;\n\n uint128 optimalRatioRepay;\n\n bool boostEnabled;\n\n }\n\n\n\n struct SubPosition {\n\n uint arrPos;\n\n bool subscribed;\n\n }\n\n\n\n AaveHolder[] public subscribers;\n\n mapping (address => SubPosition) public subscribersPos;\n\n\n\n uint public changeIndex;\n\n\n\n event Subscribed(address indexed user);\n\n event Unsubscribed(address indexed user);\n\n event Updated(address indexed user);\n\n event ParamUpdates(address indexed user, uint128, uint128, uint128, uint128, bool);\n\n\n\n /// @dev Called by the DSProxy contract which owns the Aave position\n\n /// @notice Adds the users Aave poistion in the list of subscriptions so it can be monitored\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalBoost Ratio amount which boost should target\n\n /// @param _optimalRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) external {\n\n\n\n // if boost is not enabled, set max ratio to max uint\n\n uint128 localMaxRatio = _boostEnabled ? _maxRatio : uint128(-1);\n\n require(checkParams(_minRatio, localMaxRatio), \"Must be correct params\");\n\n\n\n SubPosition storage subInfo = subscribersPos[msg.sender];\n\n\n\n AaveHolder memory subscription = AaveHolder({\n\n minRatio: _minRatio,\n\n maxRatio: localMaxRatio,\n\n optimalRatioBoost: _optimalBoost,\n\n optimalRatioRepay: _optimalRepay,\n\n user: msg.sender,\n\n boostEnabled: _boostEnabled\n\n });\n\n\n\n changeIndex++;\n\n\n\n if (subInfo.subscribed) {\n\n subscribers[subInfo.arrPos] = subscription;\n\n\n\n emit Updated(msg.sender);\n\n emit ParamUpdates(msg.sender, _minRatio, localMaxRatio, _optimalBoost, _optimalRepay, _boostEnabled);\n\n } else {\n\n subscribers.push(subscription);\n\n\n\n subInfo.arrPos = subscribers.length - 1;\n\n subInfo.subscribed = true;\n\n\n\n emit Subscribed(msg.sender);\n\n }\n\n }\n\n\n\n /// @notice Called by the users DSProxy\n\n /// @dev Owner who subscribed cancels his subscription\n\n function unsubscribe() external {\n\n _unsubscribe(msg.sender);\n\n }\n\n\n\n /// @dev Checks limit if minRatio is bigger than max\n\n /// @param _minRatio Minimum ratio, bellow which repay can be triggered\n\n /// @param _maxRatio Maximum ratio, over which boost can be triggered\n\n /// @return Returns bool if the params are correct\n\n function checkParams(uint128 _minRatio, uint128 _maxRatio) internal pure returns (bool) {\n\n\n\n if (_minRatio > _maxRatio) {\n\n return false;\n\n }\n\n\n\n return true;\n\n }\n\n\n\n /// @dev Internal method to remove a subscriber from the list\n\n /// @param _user The actual address that owns the Aave position\n\n function _unsubscribe(address _user) internal {\n\n require(subscribers.length > 0, \"Must have subscribers in the list\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n require(subInfo.subscribed, \"Must first be subscribed\");\n\n\n\n address lastOwner = subscribers[subscribers.length - 1].user;\n\n\n\n SubPosition storage subInfo2 = subscribersPos[lastOwner];\n\n subInfo2.arrPos = subInfo.arrPos;\n\n\n\n subscribers[subInfo.arrPos] = subscribers[subscribers.length - 1];\n\n subscribers.pop(); // remove last element and reduce arr length\n\n\n\n changeIndex++;\n\n subInfo.subscribed = false;\n\n subInfo.arrPos = 0;\n\n\n\n emit Unsubscribed(msg.sender);\n\n }\n\n\n\n /// @dev Checks if the user is subscribed\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return If the user is subscribed\n\n function isSubscribed(address _user) public view returns (bool) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subInfo.subscribed;\n\n }\n\n\n\n /// @dev Returns subscribtion information about a user\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Subscription information about the user if exists\n\n function getHolder(address _user) public view returns (AaveHolder memory) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subscribers[subInfo.arrPos];\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n /// @return List of all subscribers\n\n function getSubscribers() public view returns (AaveHolder[] memory) {\n\n return subscribers;\n\n }\n\n\n\n /// @notice Helper method for the frontend, returns all the subscribed CDPs paginated\n\n /// @param _page What page of subscribers you want\n\n /// @param _perPage Number of entries per page\n\n /// @return List of all subscribers for that page\n\n function getSubscribersByPage(uint _page, uint _perPage) public view returns (AaveHolder[] memory) {\n\n AaveHolder[] memory holders = new AaveHolder[](_perPage);\n\n\n\n uint start = _page * _perPage;\n\n uint end = start + _perPage;\n\n\n\n end = (end > holders.length) ? holders.length : end;\n\n\n\n uint count = 0;\n\n for (uint i = start; i < end; i++) {\n\n holders[count] = subscribers[i];\n\n count++;\n\n }\n\n\n\n return holders;\n\n }\n\n\n\n ////////////// ADMIN METHODS ///////////////////\n\n\n\n /// @notice Admin function to unsubscribe a position\n\n /// @param _user The actual address that owns the Aave position\n\n function unsubscribeByAdmin(address _user) public onlyOwner {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n if (subInfo.subscribed) {\n\n _unsubscribe(_user);\n\n }\n\n }\n\n}\n\ncontract AaveSubscriptionsProxy is ProxyPermission {\n\n\n\n address public constant AAVE_SUBSCRIPTION_ADDRESS = 0xe08ff7A2BADb634F0b581E675E6B3e583De086FC;\n\n address public constant AAVE_MONITOR_PROXY = 0xfA560Dba3a8D0B197cA9505A2B98120DD89209AC;\n\n\n\n /// @notice Calls subscription contract and creates a DSGuard if non existent\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n givePermission(AAVE_MONITOR_PROXY);\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).subscribe(\n\n _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls subscription contract and updated existing parameters\n\n /// @dev If subscription is non existent this will create one\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function update(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).subscribe(_minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls the subscription contract to unsubscribe the caller\n\n function unsubscribe() public {\n\n removePermission(AAVE_MONITOR_PROXY);\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).unsubscribe();\n\n }\n\n}\n\ncontract AaveImport is AaveHelper, AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant BASIC_PROXY = 0x29F4af15ad64C509c4140324cFE71FB728D10d2B;\n\n address public constant AETH_ADDRESS = 0x3a3A65aAb0dd2A17E3F1947bA16138cd37d08c04;\n\n\n\n function callFunction(\n\n address sender,\n\n Account.Info memory account,\n\n bytes memory data\n\n ) public {\n\n\n\n (\n\n address collateralToken,\n\n address borrowToken,\n\n uint256 ethAmount,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(data, (address,address,uint256,address,address));\n\n\n\n // withdraw eth\n\n TokenInterface(WETH_ADDRESS).withdraw(ethAmount);\n\n\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n address aCollateralToken = ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(collateralToken);\n\n address aBorrowToken = ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(borrowToken);\n\n\n\n // deposit eth on behalf of proxy\n\n DSProxy(payable(proxy)).execute{value: ethAmount}(BASIC_PROXY, abi.encodeWithSignature(\"deposit(address,uint256)\", ETH_ADDR, ethAmount));\n\n // borrow needed amount to repay users borrow\n\n (,uint256 borrowAmount,,uint256 borrowRateMode,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(borrowToken, user);\n\n borrowAmount += originationFee;\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"borrow(address,uint256,uint256)\", borrowToken, borrowAmount, borrowRateMode));\n\n // payback on behalf of user\n\n ERC20(borrowToken).safeApprove(proxy, borrowAmount);\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"paybackOnBehalf(address,address,uint256,bool,address)\", borrowToken, aBorrowToken, 0, true, user));\n\n // pull tokens from user to proxy\n\n ERC20(aCollateralToken).safeTransferFrom(user, proxy, ERC20(aCollateralToken).balanceOf(user));\n\n\n\n // enable as collateral\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"setUserUseReserveAsCollateralIfNeeded(address)\", collateralToken));\n\n\n\n // withdraw deposited eth\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"withdraw(address,address,uint256,bool)\", ETH_ADDR, AETH_ADDRESS, ethAmount, false));\n\n\n\n // deposit eth, get weth and return to sender\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n ERC20(WETH_ADDRESS).safeTransfer(proxy, ethAmount+2);\n\n }\n\n\n\n /// @dev if contract receive eth, convert it to WETH\n\n receive() external payable {\n\n // deposit eth and get weth \n\n if (msg.sender == owner) {\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n }\n\n }\n\n}\n\ncontract AaveImportTaker is DydxFlashLoanBase, ProxyPermission {\n\n\n\n address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address payable public constant AAVE_IMPORT = 0x11c937fD367D75465DC211c367684d8d4520E6f9;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must send 2 wei with this transaction\n\n /// @dev User must approve AaveImport to pull _aCollateralToken\n\n /// @param _collateralToken Collateral token we are moving to DSProxy\n\n /// @param _borrowToken Borrow token we are moving to DSProxy\n\n /// @param _ethAmount ETH amount that needs to be pulled from dydx\n\n function importLoan(address _collateralToken, address _borrowToken, uint _ethAmount) public {\n\n ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n\n\n // Get marketId from token address\n\n uint256 marketId = _getMarketIdFromTokenAddress(WETH_ADDR);\n\n\n\n // Calculate repay amount (_amount + (2 wei))\n\n // Approve transfer from\n\n uint256 repayAmount = _getRepaymentAmountInternal(_ethAmount);\n\n ERC20(WETH_ADDR).approve(SOLO_MARGIN_ADDRESS, repayAmount);\n\n\n\n Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);\n\n\n\n operations[0] = _getWithdrawAction(marketId, _ethAmount, AAVE_IMPORT);\n\n operations[1] = _getCallAction(\n\n abi.encode(_collateralToken, _borrowToken, _ethAmount, msg.sender, address(this)),\n\n AAVE_IMPORT\n\n );\n\n operations[2] = _getDepositAction(marketId, repayAmount, address(this));\n\n\n\n Account.Info[] memory accountInfos = new Account.Info[](1);\n\n accountInfos[0] = _getAccountInfo();\n\n\n\n givePermission(AAVE_IMPORT);\n\n solo.operate(accountInfos, operations);\n\n removePermission(AAVE_IMPORT);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveImport\", abi.encode(_collateralToken, _borrowToken));\n\n }\n\n}\n\ncontract CompoundBasicProxy is GasBurner {\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice User deposits tokens to the Compound protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _cTokenAddr CTokens to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n /// @param _inMarket True if the token is already in market for that address\n\n function deposit(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(5) payable {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: msg.value}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice User withdraws tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _cTokenAddr CTokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _isCAmount If true _amount is cTokens if falls _amount is underlying tokens\n\n function withdraw(address _tokenAddr, address _cTokenAddr, uint _amount, bool _isCAmount) public burnGas(5) {\n\n\n\n if (_isCAmount) {\n\n require(CTokenInterface(_cTokenAddr).redeem(_amount) == 0);\n\n } else {\n\n require(CTokenInterface(_cTokenAddr).redeemUnderlying(_amount) == 0);\n\n }\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n }\n\n\n\n /// @notice User borrows tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _cTokenAddr CTokens to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _inMarket True if the token is already in market for that address\n\n function borrow(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(8) {\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _cTokenAddr CTokens to be paybacked\n\n /// @param _amount Amount of tokens to be payedback\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _cTokenAddr, uint _amount, bool _wholeDebt) public burnGas(5) payable {\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (_wholeDebt) {\n\n _amount = CTokenInterface(_cTokenAddr).borrowBalanceCurrent(address(this));\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n\n\n require(CTokenInterface(_cTokenAddr).repayBorrow(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).repayBorrow{value: msg.value}();\n\n msg.sender.transfer(address(this).balance); // send back the extra eth\n\n }\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Enters the Compound market so it can be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Exits the Compound market so it can't be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function exitMarket(address _cTokenAddr) public {\n\n ComptrollerInterface(COMPTROLLER_ADDR).exitMarket(_cTokenAddr);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, 0);\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n}\n\ncontract CompoundSafetyRatio is Exponential, DSMath {\n\n // solhint-disable-next-line const-name-snakecase\n\n ComptrollerInterface public constant comp = ComptrollerInterface(0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B);\n\n\n\n /// @notice Calcualted the ratio of debt / adjusted collateral\n\n /// @param _user Address of the user\n\n function getSafetyRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n\n\n uint sumCollateral = 0;\n\n uint sumBorrow = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in Usd\n\n if (cTokenBalance != 0) {\n\n\n\n (, uint collFactorMantissa) = comp.markets(address(asset));\n\n\n\n Exp memory collateralFactor = Exp({mantissa: collFactorMantissa});\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n\n\n (, Exp memory tokensToUsd) = mulExp3(collateralFactor, exchangeRate, oraclePrice);\n\n\n\n (, sumCollateral) = mulScalarTruncateAddUInt(tokensToUsd, cTokenBalance, sumCollateral);\n\n }\n\n\n\n // Sum up debt in Usd\n\n if (borrowBalance != 0) {\n\n (, sumBorrow) = mulScalarTruncateAddUInt(oraclePrice, borrowBalance, sumBorrow);\n\n }\n\n }\n\n\n\n if (sumBorrow == 0) return uint(-1);\n\n\n\n uint borrowPowerUsed = (sumBorrow * 10**18) / sumCollateral;\n\n return wdiv(1e18, borrowPowerUsed);\n\n }\n\n}\n\ncontract CompoundMonitor is AdminAuth, DSMath, CompoundSafetyRatio, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n enum Method { Boost, Repay }\n\n\n\n uint public REPAY_GAS_TOKEN = 20;\n\n uint public BOOST_GAS_TOKEN = 20;\n\n\n\n uint constant public MAX_GAS_PRICE = 500000000000; // 500 gwei\n\n\n\n uint public REPAY_GAS_COST = 2000000;\n\n uint public BOOST_GAS_COST = 2000000;\n\n\n\n address public constant GAS_TOKEN_INTERFACE_ADDRESS = 0x0000000000b3F879cb30FE243b4Dfee438691c04;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n CompoundMonitorProxy public compoundMonitorProxy;\n\n CompoundSubscriptions public subscriptionsContract;\n\n address public compoundFlashLoanTakerAddress;\n\n\n\n DefisaverLogger public logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n /// @param _compoundMonitorProxy Proxy contracts that actually is authorized to call DSProxy\n\n /// @param _subscriptions Subscriptions contract for Compound positions\n\n /// @param _compoundFlashLoanTaker Contract that actually performs Repay/Boost\n\n constructor(address _compoundMonitorProxy, address _subscriptions, address _compoundFlashLoanTaker) public {\n\n compoundMonitorProxy = CompoundMonitorProxy(_compoundMonitorProxy);\n\n subscriptionsContract = CompoundSubscriptions(_subscriptions);\n\n compoundFlashLoanTakerAddress = _compoundFlashLoanTaker;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _user The actual address that owns the Compound position\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n address _user\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n compoundMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n compoundFlashLoanTakerAddress,\n\n abi.encodeWithSignature(\n\n \"repayWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256)\",\n\n _exData,\n\n _cAddresses,\n\n gasCost\n\n )\n\n );\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticCompoundRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _user The actual address that owns the Compound position\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n address _user\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n compoundMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n compoundFlashLoanTakerAddress,\n\n abi.encodeWithSignature(\n\n \"boostWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256)\",\n\n _exData,\n\n _cAddresses,\n\n gasCost\n\n )\n\n );\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticCompoundBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by MCDMonitor to enforce the min/max check\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return Boolean if it can be called and the ratio\n\n function canCall(Method _method, address _user) public view returns(bool, uint) {\n\n bool subscribed = subscriptionsContract.isSubscribed(_user);\n\n CompoundSubscriptions.CompoundHolder memory holder = subscriptionsContract.getHolder(_user);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return Boolean if the recent action preformed correctly and the ratio\n\n function ratioGoodAfter(Method _method, address _user) public view returns(bool, uint) {\n\n CompoundSubscriptions.CompoundHolder memory holder;\n\n\n\n holder= subscriptionsContract.getHolder(_user);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice If any tokens gets stuck in the contract owner can withdraw it\n\n /// @param _tokenAddress Address of the ERC20 token\n\n /// @param _to Address of the receiver\n\n /// @param _amount The amount to be sent\n\n function transferERC20(address _tokenAddress, address _to, uint _amount) public onlyOwner {\n\n ERC20(_tokenAddress).safeTransfer(_to, _amount);\n\n }\n\n\n\n /// @notice If any Eth gets stuck in the contract owner can withdraw it\n\n /// @param _to Address of the receiver\n\n /// @param _amount The amount to be sent\n\n function transferEth(address payable _to, uint _amount) public onlyOwner {\n\n _to.transfer(_amount);\n\n }\n\n}\n\ncontract CompoundSaverHelper is DSMath, Exponential {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;\n\n address public constant COMPTROLLER = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n address public constant COMPOUND_LOGGER = 0x3DD0CDf5fFA28C6847B4B276e2fD256046a44bb7;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n /// @notice Helper method to payback the Compound debt\n\n /// @dev If amount is bigger it will repay the whole debt and send the extra to the _user\n\n /// @param _amount Amount of tokens we want to repay\n\n /// @param _cBorrowToken Ctoken address we are repaying\n\n /// @param _borrowToken Token address we are repaying\n\n /// @param _user Owner of the compound position we are paying back\n\n function paybackDebt(uint _amount, address _cBorrowToken, address _borrowToken, address payable _user) internal {\n\n uint wholeDebt = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(address(this));\n\n\n\n if (_amount > wholeDebt) {\n\n if (_borrowToken == ETH_ADDRESS) {\n\n _user.transfer((_amount - wholeDebt));\n\n } else {\n\n ERC20(_borrowToken).safeTransfer(_user, (_amount - wholeDebt));\n\n }\n\n\n\n _amount = wholeDebt;\n\n }\n\n\n\n approveCToken(_borrowToken, _cBorrowToken);\n\n\n\n if (_borrowToken == ETH_ADDRESS) {\n\n CEtherInterface(_cBorrowToken).repayBorrow{value: _amount}();\n\n } else {\n\n require(CTokenInterface(_cBorrowToken).repayBorrow(_amount) == 0);\n\n }\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getFee(uint _amount, address _user, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(_user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(_user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint usdTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(CETH_ADDRESS);\n\n\n\n uint tokenPriceInEth = wdiv(usdTokenPrice, ethPrice);\n\n\n\n _gasCost = wdiv(_gasCost, tokenPriceInEth);\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Calculates the gas cost of transaction and send it to wallet\n\n /// @param _amount Amount that is converted\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getGasCost(uint _amount, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint usdTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(CETH_ADDRESS);\n\n\n\n uint tokenPriceInEth = wdiv(usdTokenPrice, ethPrice);\n\n\n\n feeAmount = wdiv(_gasCost, tokenPriceInEth);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Enters the market for the collatera and borrow tokens\n\n /// @param _cTokenAddrColl Collateral address we are entering the market in\n\n /// @param _cTokenAddrBorrow Borrow address we are entering the market in\n\n function enterMarket(address _cTokenAddrColl, address _cTokenAddrBorrow) internal {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cTokenAddrColl;\n\n markets[1] = _cTokenAddrBorrow;\n\n\n\n ComptrollerInterface(COMPTROLLER).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveCToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, 0);\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n\n\n /// @notice Returns the owner of the DSProxy that called the contract\n\n function getUserAddress() internal view returns (address) {\n\n DSProxy proxy = DSProxy(uint160(address(this)));\n\n\n\n return proxy.owner();\n\n }\n\n\n\n /// @notice Returns the maximum amount of collateral available to withdraw\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cCollAddress Collateral we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. collateral amount in that token\n\n function getMaxCollateral(address _cCollAddress, address _account) public returns (uint) {\n\n (, uint liquidityInUsd, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n uint usersBalance = CTokenInterface(_cCollAddress).balanceOfUnderlying(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n if (liquidityInUsd == 0) return usersBalance;\n\n\n\n CTokenInterface(_cCollAddress).accrueInterest();\n\n\n\n (, uint collFactorMantissa) = ComptrollerInterface(COMPTROLLER).markets(_cCollAddress);\n\n Exp memory collateralFactor = Exp({mantissa: collFactorMantissa});\n\n\n\n (, uint tokensToUsd) = divScalarByExpTruncate(liquidityInUsd, collateralFactor);\n\n\n\n uint usdPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cCollAddress);\n\n uint liqInToken = wdiv(tokensToUsd, usdPrice);\n\n\n\n if (liqInToken > usersBalance) return usersBalance;\n\n\n\n return sub(liqInToken, (liqInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n\n\n /// @notice Returns the maximum amount of borrow amount available\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cBorrowAddress Borrow token we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. borrow amount in that token\n\n function getMaxBorrow(address _cBorrowAddress, address _account) public returns (uint) {\n\n (, uint liquidityInUsd, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n CTokenInterface(_cBorrowAddress).accrueInterest();\n\n\n\n uint usdPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cBorrowAddress);\n\n uint liquidityInToken = wdiv(liquidityInUsd, usdPrice);\n\n\n\n return sub(liquidityInToken, (liquidityInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n}\n\ncontract CompoundImportFlashLoan is FlashLoanReceiverBase {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant COMPOUND_BORROW_PROXY = 0xb7EDC39bE76107e2Cc645f0f6a3D164f5e173Ee2;\n\n\n\n address public owner;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (\n\n address cCollateralToken,\n\n address cBorrowToken,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(_params, (address,address,address,address));\n\n\n\n // approve FL tokens so we can repay them\n\n ERC20(_reserve).safeApprove(cBorrowToken, 0);\n\n ERC20(_reserve).safeApprove(cBorrowToken, uint(-1));\n\n\n\n // repay compound debt\n\n require(CTokenInterface(cBorrowToken).repayBorrowBehalf(user, uint(-1)) == 0, \"Repay borrow behalf fail\");\n\n\n\n // transfer cTokens to proxy\n\n uint cTokenBalance = CTokenInterface(cCollateralToken).balanceOf(user);\n\n require(CTokenInterface(cCollateralToken).transferFrom(user, proxy, cTokenBalance));\n\n\n\n // borrow\n\n bytes memory proxyData = getProxyData(cCollateralToken, cBorrowToken, _reserve, (_amount + _fee));\n\n DSProxyInterface(proxy).execute(COMPOUND_BORROW_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _cCollToken CToken address of collateral\n\n /// @param _cBorrowToken CToken address we will borrow\n\n /// @param _borrowToken Token address we will borrow\n\n /// @param _amount Amount that will be borrowed\n\n /// @return proxyData Formated function call data\n\n function getProxyData(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) internal pure returns (bytes memory proxyData) {\n\n proxyData = abi.encodeWithSignature(\n\n \"borrow(address,address,address,uint256)\",\n\n _cCollToken, _cBorrowToken, _borrowToken, _amount);\n\n }\n\n\n\n function withdrawStuckFunds(address _tokenAddr, uint _amount) public {\n\n require(owner == msg.sender, \"Must be owner\");\n\n\n\n if (_tokenAddr == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {\n\n msg.sender.transfer(_amount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(owner, _amount);\n\n }\n\n }\n\n}\n\ncontract CompoundImportTaker is CompoundSaverHelper, ProxyPermission, GasBurner {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_IMPORT_FLASH_LOAN = 0x0a9238e14d5A20CDb03811B12D1984587C3CE9a0;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must approve COMPOUND_IMPORT_FLASH_LOAN to pull _cCollateralToken\n\n /// @param _cCollateralToken Collateral we are moving to DSProxy\n\n /// @param _cBorrowToken Borrow token we are moving to DSProxy\n\n function importLoan(address _cCollateralToken, address _cBorrowToken) external burnGas(20) {\n\n address proxy = getProxy();\n\n\n\n uint loanAmount = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(msg.sender);\n\n bytes memory paramsData = abi.encode(_cCollateralToken, _cBorrowToken, msg.sender, proxy);\n\n\n\n givePermission(COMPOUND_IMPORT_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_IMPORT_FLASH_LOAN, getUnderlyingAddr(_cBorrowToken), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_IMPORT_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundImport\", abi.encode(loanAmount, 0, _cCollateralToken));\n\n }\n\n\n\n /// @notice Gets proxy address, if user doesn't has DSProxy build it\n\n /// @return proxy DsProxy address\n\n function getProxy() internal returns (address proxy) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).proxies(msg.sender);\n\n\n\n if (proxy == address(0)) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).build(msg.sender);\n\n }\n\n\n\n }\n\n}\n\ncontract CreamBasicProxy is GasBurner {\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice User deposits tokens to the cream protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _cTokenAddr CTokens to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n /// @param _inMarket True if the token is already in market for that address\n\n function deposit(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(5) payable {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: msg.value}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice User withdraws tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _cTokenAddr CTokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _isCAmount If true _amount is cTokens if falls _amount is underlying tokens\n\n function withdraw(address _tokenAddr, address _cTokenAddr, uint _amount, bool _isCAmount) public burnGas(5) {\n\n\n\n if (_isCAmount) {\n\n require(CTokenInterface(_cTokenAddr).redeem(_amount) == 0);\n\n } else {\n\n require(CTokenInterface(_cTokenAddr).redeemUnderlying(_amount) == 0);\n\n }\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n }\n\n\n\n /// @notice User borrows tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _cTokenAddr CTokens to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _inMarket True if the token is already in market for that address\n\n function borrow(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(8) {\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _cTokenAddr CTokens to be paybacked\n\n /// @param _amount Amount of tokens to be payedback\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _cTokenAddr, uint _amount, bool _wholeDebt) public burnGas(5) payable {\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (_wholeDebt) {\n\n _amount = CTokenInterface(_cTokenAddr).borrowBalanceCurrent(address(this));\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n\n\n require(CTokenInterface(_cTokenAddr).repayBorrow(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).repayBorrow{value: msg.value}();\n\n msg.sender.transfer(address(this).balance); // send back the extra eth\n\n }\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Enters the cream market so it can be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Exits the cream market so it can't be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function exitMarket(address _cTokenAddr) public {\n\n ComptrollerInterface(COMPTROLLER_ADDR).exitMarket(_cTokenAddr);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, 0);\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n}\n\ncontract CreamLoanInfo is CreamSafetyRatio {\n\n\n\n struct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint[] collAmounts;\n\n uint[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address cTokenAddress;\n\n address underlyingTokenAddress;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n address underlyingTokenAddress;\n\n uint supplyRate;\n\n uint borrowRate;\n\n uint exchangeRate;\n\n uint marketLiquidity;\n\n uint totalSupply;\n\n uint totalBorrow;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0xD06527D5e56A3495252A528C4987003b712860eE;\n\n\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a cream user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches cream prices for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _cTokens) public view returns (uint[] memory prices) {\n\n prices = new uint[](_cTokens.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n prices[i] = CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches cream collateral factors for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _cTokens) public view returns (uint[] memory collFactors) {\n\n collFactors = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n (, collFactors[i]) = comp.markets(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in eth\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](assets.length),\n\n borrowAddr: new address[](assets.length),\n\n collAmounts: new uint[](assets.length),\n\n borrowAmounts: new uint[](assets.length)\n\n });\n\n\n\n uint collPos = 0;\n\n uint borrowPos = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in eth\n\n if (cTokenBalance != 0) {\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, Exp memory tokensToEth) = mulExp(exchangeRate, oraclePrice);\n\n\n\n data.collAddr[collPos] = asset;\n\n (, data.collAmounts[collPos]) = mulScalarTruncate(tokensToEth, cTokenBalance);\n\n collPos++;\n\n }\n\n\n\n // Sum up debt in eth\n\n if (borrowBalance != 0) {\n\n data.borrowAddr[borrowPos] = asset;\n\n (, data.borrowAmounts[borrowPos]) = mulScalarTruncate(oraclePrice, borrowBalance);\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _cTokens) public view returns (uint[] memory balances, uint[] memory borrows) {\n\n balances = new uint[](_cTokens.length);\n\n borrows = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; i++) {\n\n address asset = _cTokens[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, balances[i]) = mulScalarTruncate(exchangeRate, cTokenBalance);\n\n\n\n borrows[i] = borrowBalance;\n\n }\n\n\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in eth\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a cream user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint[] memory ratios) {\n\n ratios = new uint[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfo[] memory tokens) {\n\n tokens = new TokenInfo[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n cTokenAddress: _cTokenAddresses[i],\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getFullTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfoFull[] memory tokens) {\n\n tokens = new TokenInfoFull[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n CTokenInterface cToken = CTokenInterface(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n supplyRate: cToken.supplyRatePerBlock(),\n\n borrowRate: cToken.borrowRatePerBlock(),\n\n exchangeRate: cToken.exchangeRateCurrent(),\n\n marketLiquidity: cToken.getCash(),\n\n totalSupply: cToken.totalSupply(),\n\n totalBorrow: cToken.totalBorrowsCurrent(),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n}\n\ncontract CreamImportFlashLoan is FlashLoanReceiverBase {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant CREAM_BORROW_PROXY = 0x87F198Ef6116CdBC5f36B581d212ad950b7e2Ddd;\n\n\n\n address public owner;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (\n\n address cCollateralToken,\n\n address cBorrowToken,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(_params, (address,address,address,address));\n\n\n\n // approve FL tokens so we can repay them\n\n ERC20(_reserve).safeApprove(cBorrowToken, 0);\n\n ERC20(_reserve).safeApprove(cBorrowToken, uint(-1));\n\n\n\n // repay cream debt\n\n require(CTokenInterface(cBorrowToken).repayBorrowBehalf(user, uint(-1)) == 0, \"Repay borrow behalf fail\");\n\n\n\n // transfer cTokens to proxy\n\n uint cTokenBalance = CTokenInterface(cCollateralToken).balanceOf(user);\n\n require(CTokenInterface(cCollateralToken).transferFrom(user, proxy, cTokenBalance));\n\n\n\n // borrow\n\n bytes memory proxyData = getProxyData(cCollateralToken, cBorrowToken, _reserve, (_amount + _fee));\n\n DSProxyInterface(proxy).execute(CREAM_BORROW_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _cCollToken CToken address of collateral\n\n /// @param _cBorrowToken CToken address we will borrow\n\n /// @param _borrowToken Token address we will borrow\n\n /// @param _amount Amount that will be borrowed\n\n /// @return proxyData Formated function call data\n\n function getProxyData(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) internal pure returns (bytes memory proxyData) {\n\n proxyData = abi.encodeWithSignature(\n\n \"borrow(address,address,address,uint256)\",\n\n _cCollToken, _cBorrowToken, _borrowToken, _amount);\n\n }\n\n\n\n function withdrawStuckFunds(address _tokenAddr, uint _amount) public {\n\n require(owner == msg.sender, \"Must be owner\");\n\n\n\n if (_tokenAddr == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {\n\n msg.sender.transfer(_amount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(owner, _amount);\n\n }\n\n }\n\n}\n\ncontract CreamImportTaker is CreamSaverHelper, ProxyPermission, GasBurner {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant CREAM_IMPORT_FLASH_LOAN = 0x24F4aC0Fe758c45cf8425D8Fbdd608cca9A7dBf8;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must approve cream_IMPORT_FLASH_LOAN to pull _cCollateralToken\n\n /// @param _cCollateralToken Collateral we are moving to DSProxy\n\n /// @param _cBorrowToken Borrow token we are moving to DSProxy\n\n function importLoan(address _cCollateralToken, address _cBorrowToken) external burnGas(20) {\n\n address proxy = getProxy();\n\n\n\n uint loanAmount = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(msg.sender);\n\n bytes memory paramsData = abi.encode(_cCollateralToken, _cBorrowToken, msg.sender, proxy);\n\n\n\n givePermission(CREAM_IMPORT_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(CREAM_IMPORT_FLASH_LOAN, getUnderlyingAddr(_cBorrowToken), loanAmount, paramsData);\n\n\n\n removePermission(CREAM_IMPORT_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamImport\", abi.encode(loanAmount, 0, _cCollateralToken));\n\n }\n\n\n\n /// @notice Gets proxy address, if user doesn't has DSProxy build it\n\n /// @return proxy DsProxy address\n\n function getProxy() internal returns (address proxy) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).proxies(msg.sender);\n\n\n\n if (proxy == address(0)) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).build(msg.sender);\n\n }\n\n\n\n }\n\n}\n\ncontract SaverExchangeCore is SaverExchangeHelper, DSMath {\n\n\n\n // first is empty to keep the legacy order in place\n\n enum ExchangeType { _, OASIS, KYBER, UNISWAP, ZEROX }\n\n\n\n enum ActionType { SELL, BUY }\n\n\n\n struct ExchangeData {\n\n address srcAddr;\n\n address destAddr;\n\n uint srcAmount;\n\n uint destAmount;\n\n uint minPrice;\n\n address wrapper;\n\n address exchangeAddr;\n\n bytes callData;\n\n uint256 price0x;\n\n }\n\n\n\n /// @notice Internal method that preforms a sell on 0x/on-chain\n\n /// @dev Usefull for other DFS contract to integrate for exchanging\n\n /// @param exData Exchange data struct\n\n /// @return (address, uint) Address of the wrapper used and destAmount\n\n function _sell(ExchangeData memory exData) internal returns (address, uint) {\n\n\n\n address wrapper;\n\n uint swapedTokens;\n\n bool success;\n\n uint tokensLeft = exData.srcAmount;\n\n\n\n // if selling eth, convert to weth\n\n if (exData.srcAddr == KYBER_ETH_ADDRESS) {\n\n exData.srcAddr = ethToWethAddr(exData.srcAddr);\n\n TokenInterface(WETH_ADDRESS).deposit.value(exData.srcAmount)();\n\n }\n\n\n\n // Try 0x first and then fallback on specific wrapper\n\n if (exData.price0x > 0) {\n\n approve0xProxy(exData.srcAddr, exData.srcAmount);\n\n\n\n uint ethAmount = getProtocolFee(exData.srcAddr, msg.value, exData.srcAmount);\n\n (success, swapedTokens, tokensLeft) = takeOrder(exData, ethAmount, ActionType.SELL);\n\n\n\n if (success) {\n\n wrapper = exData.exchangeAddr;\n\n }\n\n }\n\n\n\n // fallback to desired wrapper if 0x failed\n\n if (!success) {\n\n swapedTokens = saverSwap(exData, ActionType.SELL);\n\n wrapper = exData.wrapper;\n\n }\n\n\n\n require(getBalance(exData.destAddr) >= wmul(exData.minPrice, exData.srcAmount), \"Final amount isn't correct\");\n\n\n\n // if anything is left in weth, pull it to user as eth\n\n if (getBalance(WETH_ADDRESS) > 0) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n return (wrapper, swapedTokens);\n\n }\n\n\n\n /// @notice Internal method that preforms a buy on 0x/on-chain\n\n /// @dev Usefull for other DFS contract to integrate for exchanging\n\n /// @param exData Exchange data struct\n\n /// @return (address, uint) Address of the wrapper used and srcAmount\n\n function _buy(ExchangeData memory exData) internal returns (address, uint) {\n\n\n\n address wrapper;\n\n uint swapedTokens;\n\n bool success;\n\n\n\n require(exData.destAmount != 0, \"Dest amount must be specified\");\n\n\n\n // if selling eth, convert to weth\n\n if (exData.srcAddr == KYBER_ETH_ADDRESS) {\n\n exData.srcAddr = ethToWethAddr(exData.srcAddr);\n\n TokenInterface(WETH_ADDRESS).deposit.value(exData.srcAmount)();\n\n }\n\n\n\n if (exData.price0x > 0) {\n\n approve0xProxy(exData.srcAddr, exData.srcAmount);\n\n\n\n uint ethAmount = getProtocolFee(exData.srcAddr, msg.value, exData.srcAmount);\n\n (success, swapedTokens,) = takeOrder(exData, ethAmount, ActionType.BUY);\n\n\n\n if (success) {\n\n wrapper = exData.exchangeAddr;\n\n }\n\n }\n\n\n\n // fallback to desired wrapper if 0x failed\n\n if (!success) {\n\n swapedTokens = saverSwap(exData, ActionType.BUY);\n\n wrapper = exData.wrapper;\n\n }\n\n\n\n require(getBalance(exData.destAddr) >= exData.destAmount, \"Final amount isn't correct\");\n\n\n\n // if anything is left in weth, pull it to user as eth\n\n if (getBalance(WETH_ADDRESS) > 0) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n return (wrapper, getBalance(exData.destAddr));\n\n }\n\n\n\n /// @notice Takes order from 0x and returns bool indicating if it is successful\n\n /// @param _exData Exchange data\n\n /// @param _ethAmount Ether fee needed for 0x order\n\n function takeOrder(\n\n ExchangeData memory _exData,\n\n uint256 _ethAmount,\n\n ActionType _type\n\n ) private returns (bool success, uint256, uint256) {\n\n\n\n // write in the exact amount we are selling/buing in an order\n\n if (_type == ActionType.SELL) {\n\n writeUint256(_exData.callData, 36, _exData.srcAmount);\n\n } else {\n\n writeUint256(_exData.callData, 36, _exData.destAmount);\n\n }\n\n\n\n if (ZrxAllowlist(ZRX_ALLOWLIST_ADDR).isNonPayableAddr(_exData.exchangeAddr)) {\n\n _ethAmount = 0;\n\n }\n\n\n\n uint256 tokensBefore = getBalance(_exData.destAddr);\n\n\n\n if (ZrxAllowlist(ZRX_ALLOWLIST_ADDR).isZrxAddr(_exData.exchangeAddr)) {\n\n (success, ) = _exData.exchangeAddr.call{value: _ethAmount}(_exData.callData);\n\n } else {\n\n success = false;\n\n }\n\n\n\n uint256 tokensSwaped = 0;\n\n uint256 tokensLeft = _exData.srcAmount;\n\n\n\n if (success) {\n\n // check to see if any _src tokens are left over after exchange\n\n tokensLeft = getBalance(_exData.srcAddr);\n\n\n\n // convert weth -> eth if needed\n\n if (_exData.destAddr == KYBER_ETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n // get the current balance of the swaped tokens\n\n tokensSwaped = getBalance(_exData.destAddr) - tokensBefore;\n\n }\n\n\n\n return (success, tokensSwaped, tokensLeft);\n\n }\n\n\n\n /// @notice Calls wraper contract for exchage to preform an on-chain swap\n\n /// @param _exData Exchange data struct\n\n /// @param _type Type of action SELL|BUY\n\n /// @return swapedTokens For Sell that the destAmount, for Buy thats the srcAmount\n\n function saverSwap(ExchangeData memory _exData, ActionType _type) internal returns (uint swapedTokens) {\n\n require(SaverExchangeRegistry(SAVER_EXCHANGE_REGISTRY).isWrapper(_exData.wrapper), \"Wrapper is not valid\");\n\n\n\n uint ethValue = 0;\n\n\n\n ERC20(_exData.srcAddr).safeTransfer(_exData.wrapper, _exData.srcAmount);\n\n\n\n if (_type == ActionType.SELL) {\n\n swapedTokens = ExchangeInterfaceV2(_exData.wrapper).\n\n sell{value: ethValue}(_exData.srcAddr, _exData.destAddr, _exData.srcAmount);\n\n } else {\n\n swapedTokens = ExchangeInterfaceV2(_exData.wrapper).\n\n buy{value: ethValue}(_exData.srcAddr, _exData.destAddr, _exData.destAmount);\n\n }\n\n }\n\n\n\n function writeUint256(bytes memory _b, uint256 _index, uint _input) internal pure {\n\n if (_b.length < _index + 32) {\n\n revert(\"Incorrent lengt while writting bytes32\");\n\n }\n\n\n\n bytes32 input = bytes32(_input);\n\n\n\n _index += 32;\n\n\n\n // Read the bytes32 from array memory\n\n assembly {\n\n mstore(add(_b, _index), input)\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n /// @notice Calculates protocol fee\n\n /// @param _srcAddr selling token address (if eth should be WETH)\n\n /// @param _msgValue msg.value in transaction\n\n /// @param _srcAmount amount we are selling\n\n function getProtocolFee(address _srcAddr, uint256 _msgValue, uint256 _srcAmount) internal returns(uint256) {\n\n // if we are not selling ETH msg value is always the protocol fee\n\n if (_srcAddr != WETH_ADDRESS) return _msgValue;\n\n\n\n // if msg value is larger than srcAmount, that means that msg value is protocol fee + srcAmount, so we subsctract srcAmount from msg value\n\n // we have an edge case here when protocol fee is higher than selling amount\n\n if (_msgValue > _srcAmount) return _msgValue - _srcAmount;\n\n\n\n // if msg value is lower than src amount, that means that srcAmount isn't included in msg value, so we return msg value\n\n return _msgValue;\n\n }\n\n\n\n function packExchangeData(ExchangeData memory _exData) public pure returns(bytes memory) {\n\n // splitting in two different bytes and encoding all because of stack too deep in decoding part\n\n\n\n bytes memory part1 = abi.encode(\n\n _exData.srcAddr,\n\n _exData.destAddr,\n\n _exData.srcAmount,\n\n _exData.destAmount\n\n );\n\n\n\n bytes memory part2 = abi.encode(\n\n _exData.minPrice,\n\n _exData.wrapper,\n\n _exData.exchangeAddr,\n\n _exData.callData,\n\n _exData.price0x\n\n );\n\n\n\n\n\n return abi.encode(part1, part2);\n\n }\n\n\n\n function unpackExchangeData(bytes memory _data) public pure returns(ExchangeData memory _exData) {\n\n (\n\n bytes memory part1,\n\n bytes memory part2\n\n ) = abi.decode(_data, (bytes,bytes));\n\n\n\n (\n\n _exData.srcAddr,\n\n _exData.destAddr,\n\n _exData.srcAmount,\n\n _exData.destAmount\n\n ) = abi.decode(part1, (address,address,uint256,uint256));\n\n\n\n (\n\n _exData.minPrice,\n\n _exData.wrapper,\n\n _exData.exchangeAddr,\n\n _exData.callData,\n\n _exData.price0x\n\n )\n\n = abi.decode(part2, (uint256,address,address,bytes,uint256));\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external virtual payable {}\n\n}\n\ncontract KyberWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant KYBER_INTERFACE = 0x9AAb3f75489902f3a48495025729a0AF77d4b11e;\n\n address payable public constant WALLET_ID = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Kyber\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external override payable returns (uint) {\n\n ERC20 srcToken = ERC20(_srcAddr);\n\n ERC20 destToken = ERC20(_destAddr);\n\n\n\n KyberNetworkProxyInterface kyberNetworkProxy = KyberNetworkProxyInterface(KYBER_INTERFACE);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcToken.safeApprove(address(kyberNetworkProxy), _srcAmount);\n\n }\n\n\n\n uint destAmount = kyberNetworkProxy.trade{value: msg.value}(\n\n srcToken,\n\n _srcAmount,\n\n destToken,\n\n msg.sender,\n\n uint(-1),\n\n 0,\n\n WALLET_ID\n\n );\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Kyber\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n ERC20 srcToken = ERC20(_srcAddr);\n\n ERC20 destToken = ERC20(_destAddr);\n\n\n\n uint srcAmount = 0;\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcAmount = srcToken.balanceOf(address(this));\n\n } else {\n\n srcAmount = msg.value;\n\n }\n\n\n\n KyberNetworkProxyInterface kyberNetworkProxy = KyberNetworkProxyInterface(KYBER_INTERFACE);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcToken.safeApprove(address(kyberNetworkProxy), srcAmount);\n\n }\n\n\n\n uint destAmount = kyberNetworkProxy.trade{value: msg.value}(\n\n srcToken,\n\n srcAmount,\n\n destToken,\n\n msg.sender,\n\n _destAmount,\n\n 0,\n\n WALLET_ID\n\n );\n\n\n\n require(destAmount == _destAmount, \"Wrong dest amount\");\n\n\n\n uint srcAmountAfter = 0;\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcAmountAfter = srcToken.balanceOf(address(this));\n\n } else {\n\n srcAmountAfter = address(this).balance;\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return (srcAmount - srcAmountAfter);\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return rate Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint rate) {\n\n (rate, ) = KyberNetworkProxyInterface(KYBER_INTERFACE)\n\n .getExpectedRate(ERC20(_srcAddr), ERC20(_destAddr), _srcAmount);\n\n\n\n // multiply with decimal difference in src token\n\n rate = rate * (10**(18 - getDecimals(_srcAddr)));\n\n // divide with decimal difference in dest token\n\n rate = rate / (10**(18 - getDecimals(_destAddr)));\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return rate Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint rate) {\n\n uint256 srcRate = getSellRate(_destAddr, _srcAddr, _destAmount);\n\n uint256 srcAmount = wmul(srcRate, _destAmount);\n\n\n\n rate = getSellRate(_srcAddr, _destAddr, srcAmount);\n\n\n\n // increase rate by 3% too account for inaccuracy between sell/buy conversion\n\n rate = rate + (rate / 30);\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n receive() payable external {}\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n}\n\ncontract OasisTradeWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant OTC_ADDRESS = 0x794e6e91555438aFc3ccF1c5076A74F42133d08D;\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Oasis\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external override payable returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n ERC20(srcAddr).safeApprove(OTC_ADDRESS, _srcAmount);\n\n\n\n uint destAmount = OasisInterface(OTC_ADDRESS).sellAllAmount(srcAddr, _srcAmount, destAddr, 0);\n\n\n\n // convert weth -> eth and send back\n\n if (destAddr == WETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(destAmount);\n\n msg.sender.transfer(destAmount);\n\n } else {\n\n ERC20(destAddr).safeTransfer(msg.sender, destAmount);\n\n }\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Oasis\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n ERC20(srcAddr).safeApprove(OTC_ADDRESS, uint(-1));\n\n\n\n uint srcAmount = OasisInterface(OTC_ADDRESS).buyAllAmount(destAddr, _destAmount, srcAddr, uint(-1));\n\n\n\n // convert weth -> eth and send back\n\n if (destAddr == WETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(_destAmount);\n\n msg.sender.transfer(_destAmount);\n\n } else {\n\n ERC20(destAddr).safeTransfer(msg.sender, _destAmount);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(srcAddr);\n\n\n\n return srcAmount;\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n return wdiv(OasisInterface(OTC_ADDRESS).getBuyAmount(destAddr, srcAddr, _srcAmount), _srcAmount);\n\n }\n\n\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n return wdiv(1 ether, wdiv(OasisInterface(OTC_ADDRESS).getPayAmount(srcAddr, destAddr, _destAmount), _destAmount));\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n\n\n receive() payable external {}\n\n}\n\ncontract UniswapV2Wrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n UniswapRouterInterface public constant router = UniswapRouterInterface(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at UniswapV2\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable override returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n uint[] memory amounts;\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n ERC20(_srcAddr).safeApprove(address(router), _srcAmount);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n amounts = router.swapExactTokensForETH(_srcAmount, 1, path, msg.sender, block.timestamp + 1);\n\n }\n\n // if we are selling token to token\n\n else {\n\n amounts = router.swapExactTokensForTokens(_srcAmount, 1, path, msg.sender, block.timestamp + 1);\n\n }\n\n\n\n return amounts[amounts.length - 1];\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at UniswapV2\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n uint[] memory amounts;\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n ERC20(_srcAddr).safeApprove(address(router), uint(-1));\n\n\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n amounts = router.swapTokensForExactETH(_destAmount, uint(-1), path, msg.sender, block.timestamp + 1);\n\n }\n\n // if we are buying token to token\n\n else {\n\n amounts = router.swapTokensForExactTokens(_destAmount, uint(-1), path, msg.sender, block.timestamp + 1);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return amounts[0];\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n uint[] memory amounts = router.getAmountsOut(_srcAmount, path);\n\n return wdiv(amounts[amounts.length - 1], _srcAmount);\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n uint[] memory amounts = router.getAmountsIn(_destAmount, path);\n\n return wdiv(_destAmount, amounts[0]);\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n receive() payable external {}\n\n}\n\ncontract UniswapWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant UNISWAP_FACTORY = 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Uniswap\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable override returns (uint) {\n\n address uniswapExchangeAddr;\n\n uint destAmount;\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, _srcAmount);\n\n\n\n destAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToEthTransferInput(_srcAmount, 1, block.timestamp + 1, msg.sender);\n\n }\n\n // if we are selling token to token\n\n else {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, _srcAmount);\n\n\n\n destAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToTokenTransferInput(_srcAmount, 1, 1, block.timestamp + 1, msg.sender, _destAddr);\n\n }\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Uniswap\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n address uniswapExchangeAddr;\n\n uint srcAmount;\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, uint(-1));\n\n\n\n srcAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToEthTransferOutput(_destAmount, uint(-1), block.timestamp + 1, msg.sender);\n\n }\n\n // if we are buying token to token\n\n else {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, uint(-1));\n\n\n\n srcAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToTokenTransferOutput(_destAmount, uint(-1), uint(-1), block.timestamp + 1, msg.sender, _destAddr);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return srcAmount;\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n if(_srcAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr);\n\n return wdiv(UniswapExchangeInterface(uniswapTokenAddress).getEthToTokenInputPrice(_srcAmount), _srcAmount);\n\n } else if (_destAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n return wdiv(UniswapExchangeInterface(uniswapTokenAddress).getTokenToEthInputPrice(_srcAmount), _srcAmount);\n\n } else {\n\n uint ethBought = UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr)).getTokenToEthInputPrice(_srcAmount);\n\n return wdiv(UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr)).getEthToTokenInputPrice(ethBought), _srcAmount);\n\n }\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n if(_srcAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(uniswapTokenAddress).getEthToTokenOutputPrice(_destAmount), _destAmount));\n\n } else if (_destAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(uniswapTokenAddress).getTokenToEthOutputPrice(_destAmount), _destAmount));\n\n } else {\n\n uint ethNeeded = UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr)).getTokenToEthOutputPrice(_destAmount);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr)).getEthToTokenOutputPrice(ethNeeded), _destAmount));\n\n }\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n receive() payable external {}\n\n}\n\ncontract DyDxFlashLoanTaker is DydxFlashLoanBase, ProxyPermission {\n\n\n\n address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n /// @notice Takes flash loan for _receiver\n\n /// @dev Receiver must send back WETH + 2 wei after executing transaction\n\n /// @dev Method is meant to be called from proxy and proxy will give authorization to _receiver\n\n /// @param _receiver Address of funds receiver\n\n /// @param _ethAmount ETH amount that needs to be pulled from dydx \n\n /// @param _encodedData Bytes with packed data\n\n function takeLoan(address _receiver, uint256 _ethAmount, bytes memory _encodedData) public {\n\n ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n\n\n // Get marketId from token address\n\n uint256 marketId = _getMarketIdFromTokenAddress(WETH_ADDR);\n\n\n\n // Calculate repay amount (_amount + (2 wei))\n\n // Approve transfer from\n\n uint256 repayAmount = _getRepaymentAmountInternal(_ethAmount);\n\n ERC20(WETH_ADDR).approve(SOLO_MARGIN_ADDRESS, repayAmount);\n\n\n\n Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);\n\n\n\n operations[0] = _getWithdrawAction(marketId, _ethAmount, _receiver);\n\n operations[1] = _getCallAction(\n\n _encodedData,\n\n _receiver\n\n );\n\n operations[2] = _getDepositAction(marketId, repayAmount, address(this));\n\n\n\n Account.Info[] memory accountInfos = new Account.Info[](1);\n\n accountInfos[0] = _getAccountInfo();\n\n\n\n givePermission(_receiver);\n\n solo.operate(accountInfos, operations);\n\n removePermission(_receiver);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"DyDxFlashLoanTaken\", abi.encode(_receiver, _ethAmount, _encodedData));\n\n }\n\n}\n\nabstract contract CTokenInterface is ERC20 {\n\n function mint(uint256 mintAmount) external virtual returns (uint256);\n\n\n\n // function mint() external virtual payable;\n\n\n\n function accrueInterest() public virtual returns (uint);\n\n\n\n function redeem(uint256 redeemTokens) external virtual returns (uint256);\n\n\n\n function redeemUnderlying(uint256 redeemAmount) external virtual returns (uint256);\n\n\n\n function borrow(uint256 borrowAmount) external virtual returns (uint256);\n\n\n\n function repayBorrow(uint256 repayAmount) external virtual returns (uint256);\n\n\n\n function repayBorrow() external virtual payable;\n\n\n\n function repayBorrowBehalf(address borrower, uint256 repayAmount) external virtual returns (uint256);\n\n\n\n function repayBorrowBehalf(address borrower) external virtual payable;\n\n\n\n function liquidateBorrow(address borrower, uint256 repayAmount, address cTokenCollateral)\n\n external virtual\n\n returns (uint256);\n\n\n\n function liquidateBorrow(address borrower, address cTokenCollateral) external virtual payable;\n\n\n\n function exchangeRateCurrent() external virtual returns (uint256);\n\n\n\n function supplyRatePerBlock() external virtual returns (uint256);\n\n\n\n function borrowRatePerBlock() external virtual returns (uint256);\n\n\n\n function totalReserves() external virtual returns (uint256);\n\n\n\n function reserveFactorMantissa() external virtual returns (uint256);\n\n\n\n function borrowBalanceCurrent(address account) external virtual returns (uint256);\n\n\n\n function totalBorrowsCurrent() external virtual returns (uint256);\n\n\n\n function getCash() external virtual returns (uint256);\n\n\n\n function balanceOfUnderlying(address owner) external virtual returns (uint256);\n\n\n\n function underlying() external virtual returns (address);\n\n\n\n function getAccountSnapshot(address account) external virtual view returns (uint, uint, uint, uint);\n\n}\n\nabstract contract ISubscriptionsV2 is StaticV2 {\n\n\n\n function getOwner(uint _cdpId) external view virtual returns(address);\n\n function getSubscribedInfo(uint _cdpId) public view virtual returns(bool, uint128, uint128, uint128, uint128, address, uint coll, uint debt);\n\n function getCdpHolder(uint _cdpId) public view virtual returns (bool subscribed, CdpHolder memory);\n\n}\n\ncontract MCDMonitorV2 is DSMath, AdminAuth, GasBurner, StaticV2 {\n\n\n\n uint public REPAY_GAS_TOKEN = 25;\n\n uint public BOOST_GAS_TOKEN = 25;\n\n\n\n uint public MAX_GAS_PRICE = 200000000000; // 200 gwei\n\n\n\n uint public REPAY_GAS_COST = 2500000;\n\n uint public BOOST_GAS_COST = 2500000;\n\n\n\n MCDMonitorProxyV2 public monitorProxyContract;\n\n ISubscriptionsV2 public subscriptionsContract;\n\n address public mcdSaverTakerAddress;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n Manager public manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n Vat public vat = Vat(0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B);\n\n Spotter public spotter = Spotter(0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3);\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n constructor(address _monitorProxy, address _subscriptions, address _mcdSaverTakerAddress) public {\n\n monitorProxyContract = MCDMonitorProxyV2(_monitorProxy);\n\n subscriptionsContract = ISubscriptionsV2(_subscriptions);\n\n mcdSaverTakerAddress = _mcdSaverTakerAddress;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _nextPrice,\n\n address _joinAddr\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _cdpId, _nextPrice);\n\n require(isAllowed);\n\n\n\n uint gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n address owner = subscriptionsContract.getOwner(_cdpId);\n\n\n\n monitorProxyContract.callExecute{value: msg.value}(\n\n owner,\n\n mcdSaverTakerAddress,\n\n abi.encodeWithSignature(\n\n \"repayWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256,uint256,address)\",\n\n _exchangeData, _cdpId, gasCost, _joinAddr));\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _cdpId, _nextPrice);\n\n require(isGoodRatio);\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), owner, \"AutomaticMCDRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _nextPrice,\n\n address _joinAddr\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _cdpId, _nextPrice);\n\n require(isAllowed);\n\n\n\n uint gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n address owner = subscriptionsContract.getOwner(_cdpId);\n\n\n\n monitorProxyContract.callExecute{value: msg.value}(\n\n owner,\n\n mcdSaverTakerAddress,\n\n abi.encodeWithSignature(\n\n \"boostWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256,uint256,address)\",\n\n _exchangeData, _cdpId, gasCost, _joinAddr));\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _cdpId, _nextPrice);\n\n require(isGoodRatio);\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), owner, \"AutomaticMCDBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Returns an address that owns the CDP\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(uint _cdpId) public view returns(address) {\n\n return manager.owns(_cdpId);\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt)\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getCdpInfo(uint _cdpId, bytes32 _ilk) public view returns (uint, uint) {\n\n address urn = manager.urns(_cdpId);\n\n\n\n (uint collateral, uint debt) = vat.urns(_ilk, urn);\n\n (,uint rate,,,) = vat.ilks(_ilk);\n\n\n\n return (collateral, rmul(debt, rate));\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint) {\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (,,uint spot,,) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n /// @notice Gets CDP ratio\n\n /// @param _cdpId Id of the CDP\n\n /// @param _nextPrice Next price for user\n\n function getRatio(uint _cdpId, uint _nextPrice) public view returns (uint) {\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n uint price = (_nextPrice == 0) ? getPrice(ilk) : _nextPrice;\n\n\n\n (uint collateral, uint debt) = getCdpInfo(_cdpId, ilk);\n\n\n\n if (debt == 0) return 0;\n\n\n\n return rdiv(wmul(collateral, price), debt) / (10 ** 18);\n\n }\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by MCDMonitor to enforce the min/max check\n\n function canCall(Method _method, uint _cdpId, uint _nextPrice) public view returns(bool, uint) {\n\n bool subscribed;\n\n CdpHolder memory holder;\n\n (subscribed, holder) = subscriptionsContract.getCdpHolder(_cdpId);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if using next price is allowed\n\n if (_nextPrice > 0 && !holder.nextPriceEnabled) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n // check if owner is still owner\n\n if (getOwner(_cdpId) != holder.owner) return (false, 0);\n\n\n\n uint currRatio = getRatio(_cdpId, _nextPrice);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n function ratioGoodAfter(Method _method, uint _cdpId, uint _nextPrice) public view returns(bool, uint) {\n\n CdpHolder memory holder;\n\n\n\n (, holder) = subscriptionsContract.getCdpHolder(_cdpId);\n\n\n\n uint currRatio = getRatio(_cdpId, _nextPrice);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change max gas price\n\n /// @param _maxGasPrice New max gas price\n\n function changeMaxGasPrice(uint _maxGasPrice) public onlyOwner {\n\n require(_maxGasPrice < 500000000000);\n\n\n\n MAX_GAS_PRICE = _maxGasPrice;\n\n }\n\n\n\n /// @notice Allows owner to change the amount of gas token burned per function call\n\n /// @param _gasAmount Amount of gas token\n\n /// @param _isRepay Flag to know for which function we are setting the gas token amount\n\n function changeGasTokenAmount(uint _gasAmount, bool _isRepay) public onlyOwner {\n\n if (_isRepay) {\n\n REPAY_GAS_TOKEN = _gasAmount;\n\n } else {\n\n BOOST_GAS_TOKEN = _gasAmount;\n\n }\n\n }\n\n}\n\ncontract MCDCloseFlashLoan is SaverExchangeCore, MCDSaverProxyHelper, FlashLoanReceiverBase, AdminAuth {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n uint public constant SERVICE_FEE = 400; // 0.25% Fee\n\n\n\n bytes32 internal constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant ETH_JOIN_ADDRESS = 0x2F0b23f53734252Bda2277357e97e1517d6B042A;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n DaiJoin public constant daiJoin = DaiJoin(DAI_JOIN_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n\n\n struct CloseData {\n\n uint cdpId;\n\n uint collAmount;\n\n uint daiAmount;\n\n uint minAccepted;\n\n address joinAddr;\n\n address proxy;\n\n uint flFee;\n\n bool toDai;\n\n address reserve;\n\n uint amount;\n\n }\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (\n\n uint[8] memory numData,\n\n address[5] memory addrData,\n\n bytes memory callData,\n\n address proxy,\n\n bool toDai\n\n )\n\n = abi.decode(_params, (uint256[8],address[5],bytes,address,bool));\n\n\n\n ExchangeData memory exchangeData = ExchangeData({\n\n srcAddr: addrData[0],\n\n destAddr: addrData[1],\n\n srcAmount: numData[4],\n\n destAmount: numData[5],\n\n minPrice: numData[6],\n\n wrapper: addrData[3],\n\n exchangeAddr: addrData[2],\n\n callData: callData,\n\n price0x: numData[7]\n\n });\n\n\n\n CloseData memory closeData = CloseData({\n\n cdpId: numData[0],\n\n collAmount: numData[1],\n\n daiAmount: numData[2],\n\n minAccepted: numData[3],\n\n joinAddr: addrData[4],\n\n proxy: proxy,\n\n flFee: _fee,\n\n toDai: toDai,\n\n reserve: _reserve,\n\n amount: _amount\n\n });\n\n\n\n address user = DSProxy(payable(closeData.proxy)).owner();\n\n\n\n closeCDP(closeData, exchangeData, user);\n\n }\n\n\n\n function closeCDP(\n\n CloseData memory _closeData,\n\n ExchangeData memory _exchangeData,\n\n address _user\n\n ) internal {\n\n\n\n paybackDebt(_closeData.cdpId, manager.ilks(_closeData.cdpId), _closeData.daiAmount); // payback whole debt\n\n drawMaxCollateral(_closeData.cdpId, _closeData.joinAddr, _closeData.collAmount); // draw whole collateral\n\n\n\n uint daiSwaped = 0;\n\n uint dfsFee = 0;\n\n\n\n if (_closeData.toDai) {\n\n _exchangeData.srcAmount = _closeData.collAmount;\n\n (, daiSwaped) = _sell(_exchangeData);\n\n\n\n dfsFee = getFee(daiSwaped, _user);\n\n } else {\n\n dfsFee = getFee(_closeData.daiAmount, _user);\n\n\n\n _exchangeData.destAmount = (_closeData.daiAmount + _closeData.flFee + dfsFee);\n\n (, daiSwaped) = _buy(_exchangeData);\n\n }\n\n\n\n takeFee(dfsFee);\n\n\n\n address tokenAddr = getVaultCollAddr(_closeData.joinAddr);\n\n\n\n if (_closeData.toDai) {\n\n tokenAddr = DAI_ADDRESS;\n\n }\n\n\n\n require(getBalance(tokenAddr) >= _closeData.minAccepted, \"Below min. number of eth specified\");\n\n\n\n transferFundsBackToPoolInternal(_closeData.reserve, _closeData.amount.add(_closeData.flFee));\n\n\n\n sendLeftover(tokenAddr, DAI_ADDRESS, payable(_user));\n\n\n\n }\n\n\n\n function drawMaxCollateral(uint _cdpId, address _joinAddr, uint _amount) internal returns (uint) {\n\n manager.frob(_cdpId, -toPositiveInt(_amount), 0);\n\n manager.flux(_cdpId, address(this), _amount);\n\n\n\n uint joinAmount = _amount;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n joinAmount = _amount / (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n Join(_joinAddr).exit(address(this), joinAmount);\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n Join(_joinAddr).gem().withdraw(joinAmount); // Weth -> Eth\n\n }\n\n\n\n return joinAmount;\n\n }\n\n\n\n function paybackDebt(uint _cdpId, bytes32 _ilk, uint _daiAmount) internal {\n\n address urn = manager.urns(_cdpId);\n\n\n\n daiJoin.dai().approve(DAI_JOIN_ADDRESS, _daiAmount);\n\n daiJoin.join(urn, _daiAmount);\n\n\n\n manager.frob(_cdpId, 0, normalizePaybackAmount(VAT_ADDRESS, urn, _ilk));\n\n }\n\n\n\n function takeFee(uint _feeAmount) internal returns (uint) {\n\n ERC20(DAI_ADDRESS).transfer(WALLET_ID, _feeAmount);\n\n }\n\n\n\n function getFee(uint _amount, address _owner) internal view returns (uint feeAmount) {\n\n uint fee = SERVICE_FEE;\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(_owner)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(_owner);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n }\n\n\n\n function getVaultCollAddr(address _joinAddr) internal view returns (address) {\n\n address tokenAddr = address(Join(_joinAddr).gem());\n\n\n\n if (tokenAddr == WETH_ADDRESS) {\n\n return KYBER_ETH_ADDRESS;\n\n }\n\n\n\n return tokenAddr;\n\n }\n\n\n\n function getPrice(bytes32 _ilk) public view returns (uint256) {\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (, , uint256 spot, , ) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n\n\n}\n\ncontract MCDCloseTaker is MCDSaverProxyHelper {\n\n\n\n address public constant SUBSCRIPTION_ADDRESS_NEW = 0xC45d4f6B6bf41b6EdAA58B01c4298B8d9078269a;\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n struct CloseData {\n\n uint cdpId;\n\n address joinAddr;\n\n uint collAmount;\n\n uint daiAmount;\n\n uint minAccepted;\n\n bool wholeDebt;\n\n bool toDai;\n\n }\n\n\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n\n\n function closeWithLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n CloseData memory _closeData,\n\n address payable mcdCloseFlashLoan\n\n ) public payable {\n\n mcdCloseFlashLoan.transfer(msg.value); // 0x fee\n\n\n\n if (_closeData.wholeDebt) {\n\n _closeData.daiAmount = getAllDebt(\n\n VAT_ADDRESS,\n\n manager.urns(_closeData.cdpId),\n\n manager.urns(_closeData.cdpId),\n\n manager.ilks(_closeData.cdpId)\n\n );\n\n\n\n (_closeData.collAmount, )\n\n = getCdpInfo(manager, _closeData.cdpId, manager.ilks(_closeData.cdpId));\n\n }\n\n\n\n manager.cdpAllow(_closeData.cdpId, mcdCloseFlashLoan, 1);\n\n\n\n (uint[8] memory numData, address[5] memory addrData, bytes memory callData)\n\n = _packData(_closeData, _exchangeData);\n\n bytes memory paramsData = abi.encode(numData, addrData, callData, address(this), _closeData.toDai);\n\n\n\n lendingPool.flashLoan(mcdCloseFlashLoan, DAI_ADDRESS, _closeData.daiAmount, paramsData);\n\n\n\n manager.cdpAllow(_closeData.cdpId, mcdCloseFlashLoan, 0);\n\n\n\n // If sub. to automatic protection unsubscribe\n\n unsubscribe(SUBSCRIPTION_ADDRESS_NEW, _closeData.cdpId);\n\n\n\n logger.Log(address(this), msg.sender, \"MCDClose\", abi.encode(_closeData.cdpId, _closeData.collAmount, _closeData.daiAmount, _closeData.toDai));\n\n }\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getMaxDebt(uint256 _cdpId, bytes32 _ilk) public view returns (uint256) {\n\n uint256 price = getPrice(_ilk);\n\n\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (uint256 collateral, uint256 debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(wdiv(wmul(collateral, price), mat), debt);\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint256) {\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (, , uint256 spot, , ) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n function unsubscribe(address _subContract, uint _cdpId) internal {\n\n (, bool isSubscribed) = IMCDSubscriptions(_subContract).subscribersPos(_cdpId);\n\n\n\n if (isSubscribed) {\n\n IMCDSubscriptions(_subContract).unsubscribe(_cdpId);\n\n }\n\n }\n\n\n\n function _packData(\n\n CloseData memory _closeData,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[8] memory numData, address[5] memory addrData, bytes memory callData) {\n\n\n\n numData = [\n\n _closeData.cdpId,\n\n _closeData.collAmount,\n\n _closeData.daiAmount,\n\n _closeData.minAccepted,\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n addrData = [\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper,\n\n _closeData.joinAddr\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n\n\n}\n\ncontract MCDCreateFlashLoan is SaverExchangeCore, AdminAuth, FlashLoanReceiverBase {\n\n address public constant CREATE_PROXY_ACTIONS = 0x6d0984E80a86f26c0dd564ca0CF74a8E9Da03305;\n\n\n\n uint public constant SERVICE_FEE = 400; // 0.25% Fee\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant ETH_JOIN_ADDRESS = 0x2F0b23f53734252Bda2277357e97e1517d6B042A;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant JUG_ADDRESS = 0x19c0976f590D67707E62397C87829d896Dc0f1F1;\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n //check the contract has the specified balance\n\n require(_amount <= getBalanceInternal(address(this), _reserve),\n\n \"Invalid balance for the contract\");\n\n\n\n (\n\n uint[6] memory numData,\n\n address[5] memory addrData,\n\n bytes memory callData,\n\n address proxy\n\n )\n\n = abi.decode(_params, (uint256[6],address[5],bytes,address));\n\n\n\n ExchangeData memory exchangeData = ExchangeData({\n\n srcAddr: addrData[0],\n\n destAddr: addrData[1],\n\n srcAmount: numData[2],\n\n destAmount: numData[3],\n\n minPrice: numData[4],\n\n wrapper: addrData[3],\n\n exchangeAddr: addrData[2],\n\n callData: callData,\n\n price0x: numData[5]\n\n });\n\n\n\n openAndLeverage(numData[0], numData[1] + _fee, addrData[4], proxy, exchangeData);\n\n\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function openAndLeverage(\n\n uint _collAmount,\n\n uint _daiAmountAndFee,\n\n address _joinAddr,\n\n address _proxy,\n\n ExchangeData memory _exchangeData\n\n ) public {\n\n\n\n uint dfsFee = getFee(_exchangeData.srcAmount, DSProxy(payable(_proxy)).owner());\n\n\n\n _exchangeData.srcAmount = (_exchangeData.srcAmount - dfsFee);\n\n (, uint256 collSwaped) = _sell(_exchangeData);\n\n\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n MCDCreateProxyActions(CREATE_PROXY_ACTIONS).openLockETHAndDraw{value: address(this).balance}(\n\n MANAGER_ADDRESS,\n\n JUG_ADDRESS,\n\n ETH_JOIN_ADDRESS,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _daiAmountAndFee,\n\n _proxy\n\n );\n\n } else {\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(CREATE_PROXY_ACTIONS, 0);\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(CREATE_PROXY_ACTIONS, uint256(-1));\n\n\n\n MCDCreateProxyActions(CREATE_PROXY_ACTIONS).openLockGemAndDraw(\n\n MANAGER_ADDRESS,\n\n JUG_ADDRESS,\n\n _joinAddr,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n (_collAmount + collSwaped),\n\n _daiAmountAndFee,\n\n true,\n\n _proxy\n\n );\n\n }\n\n }\n\n\n\n function getFee(uint _amount, address _owner) internal returns (uint feeAmount) {\n\n uint fee = SERVICE_FEE;\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(_owner)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(_owner);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n ERC20(DAI_ADDRESS).transfer(WALLET_ID, feeAmount);\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n}\n\ncontract MCDSaverProxy is SaverExchangeCore, MCDSaverProxyHelper {\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n bytes32 public constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant JUG_ADDRESS = 0x19c0976f590D67707E62397C87829d896Dc0f1F1;\n\n address public constant ETH_JOIN_ADDRESS = 0x2F0b23f53734252Bda2277357e97e1517d6B042A;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n Manager public constant manager = Manager(MANAGER_ADDRESS);\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n DaiJoin public constant daiJoin = DaiJoin(DAI_JOIN_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Repay - draws collateral, converts to Dai and repays the debt\n\n /// @dev Must be called by the DSProxy contract that owns the CDP\n\n function repay(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable {\n\n\n\n address owner = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n drawCollateral(_cdpId, _joinAddr, _exchangeData.srcAmount);\n\n\n\n (, uint daiAmount) = _sell(_exchangeData);\n\n\n\n uint daiAfterFee = sub(daiAmount, getFee(daiAmount, _gasCost, owner));\n\n\n\n paybackDebt(_cdpId, ilk, daiAfterFee, owner);\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n\n\n logger.Log(address(this), msg.sender, \"MCDRepay\", abi.encode(_cdpId, owner, _exchangeData.srcAmount, daiAmount));\n\n\n\n }\n\n\n\n /// @notice Boost - draws Dai, converts to collateral and adds to CDP\n\n /// @dev Must be called by the DSProxy contract that owns the CDP\n\n function boost(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable {\n\n address owner = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n uint daiDrawn = drawDai(_cdpId, ilk, _exchangeData.srcAmount);\n\n uint daiAfterFee = sub(daiDrawn, getFee(daiDrawn, _gasCost, owner));\n\n\n\n _exchangeData.srcAmount = daiAfterFee;\n\n (, uint swapedColl) = _sell(_exchangeData);\n\n\n\n addCollateral(_cdpId, _joinAddr, swapedColl);\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n\n\n logger.Log(address(this), msg.sender, \"MCDBoost\", abi.encode(_cdpId, owner, _exchangeData.srcAmount, swapedColl));\n\n }\n\n\n\n /// @notice Draws Dai from the CDP\n\n /// @dev If _daiAmount is bigger than max available we'll draw max\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _daiAmount Amount of Dai to draw\n\n function drawDai(uint _cdpId, bytes32 _ilk, uint _daiAmount) internal returns (uint) {\n\n uint rate = Jug(JUG_ADDRESS).drip(_ilk);\n\n uint daiVatBalance = vat.dai(manager.urns(_cdpId));\n\n\n\n uint maxAmount = getMaxDebt(_cdpId, _ilk);\n\n\n\n if (_daiAmount >= maxAmount) {\n\n _daiAmount = sub(maxAmount, 1);\n\n }\n\n\n\n manager.frob(_cdpId, int(0), normalizeDrawAmount(_daiAmount, rate, daiVatBalance));\n\n manager.move(_cdpId, address(this), toRad(_daiAmount));\n\n\n\n if (vat.can(address(this), address(DAI_JOIN_ADDRESS)) == 0) {\n\n vat.hope(DAI_JOIN_ADDRESS);\n\n }\n\n\n\n DaiJoin(DAI_JOIN_ADDRESS).exit(address(this), _daiAmount);\n\n\n\n return _daiAmount;\n\n }\n\n\n\n /// @notice Adds collateral to the CDP\n\n /// @param _cdpId Id of the CDP\n\n /// @param _joinAddr Address of the join contract for the CDP collateral\n\n /// @param _amount Amount of collateral to add\n\n function addCollateral(uint _cdpId, address _joinAddr, uint _amount) internal {\n\n int convertAmount = 0;\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n Join(_joinAddr).gem().deposit{value: _amount}();\n\n convertAmount = toPositiveInt(_amount);\n\n } else {\n\n convertAmount = toPositiveInt(convertTo18(_joinAddr, _amount));\n\n }\n\n\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(_joinAddr, 0);\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(_joinAddr, _amount);\n\n\n\n Join(_joinAddr).join(address(this), _amount);\n\n\n\n vat.frob(\n\n manager.ilks(_cdpId),\n\n manager.urns(_cdpId),\n\n address(this),\n\n address(this),\n\n convertAmount,\n\n 0\n\n );\n\n\n\n }\n\n\n\n /// @notice Draws collateral and returns it to DSProxy\n\n /// @dev If _amount is bigger than max available we'll draw max\n\n /// @param _cdpId Id of the CDP\n\n /// @param _joinAddr Address of the join contract for the CDP collateral\n\n /// @param _amount Amount of collateral to draw\n\n function drawCollateral(uint _cdpId, address _joinAddr, uint _amount) internal returns (uint) {\n\n uint frobAmount = _amount;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n frobAmount = _amount * (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n manager.frob(_cdpId, -toPositiveInt(frobAmount), 0);\n\n manager.flux(_cdpId, address(this), frobAmount);\n\n\n\n Join(_joinAddr).exit(address(this), _amount);\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n Join(_joinAddr).gem().withdraw(_amount); // Weth -> Eth\n\n }\n\n\n\n return _amount;\n\n }\n\n\n\n /// @notice Paybacks Dai debt\n\n /// @dev If the _daiAmount is bigger than the whole debt, returns extra Dai\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _daiAmount Amount of Dai to payback\n\n /// @param _owner Address that owns the DSProxy that owns the CDP\n\n function paybackDebt(uint _cdpId, bytes32 _ilk, uint _daiAmount, address _owner) internal {\n\n address urn = manager.urns(_cdpId);\n\n\n\n uint wholeDebt = getAllDebt(VAT_ADDRESS, urn, urn, _ilk);\n\n\n\n if (_daiAmount > wholeDebt) {\n\n ERC20(DAI_ADDRESS).transfer(_owner, sub(_daiAmount, wholeDebt));\n\n _daiAmount = wholeDebt;\n\n }\n\n\n\n if (ERC20(DAI_ADDRESS).allowance(address(this), DAI_JOIN_ADDRESS) == 0) {\n\n ERC20(DAI_ADDRESS).approve(DAI_JOIN_ADDRESS, uint(-1));\n\n }\n\n\n\n daiJoin.join(urn, _daiAmount);\n\n\n\n manager.frob(_cdpId, 0, normalizePaybackAmount(VAT_ADDRESS, urn, _ilk));\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Dai amount that is converted\n\n /// @param _gasCost Used for Monitor, estimated gas cost of tx\n\n /// @param _owner The address that controlls the DSProxy that owns the CDP\n\n function getFee(uint _amount, uint _gasCost, address _owner) internal returns (uint feeAmount) {\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(_owner)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(_owner);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n uint ethDaiPrice = getPrice(ETH_ILK);\n\n _gasCost = rmul(_gasCost, ethDaiPrice);\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n ERC20(DAI_ADDRESS).transfer(WALLET_ID, feeAmount);\n\n }\n\n\n\n /// @notice Gets the maximum amount of collateral available to draw\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _joinAddr Joind address of collateral\n\n /// @dev Substracts 10 wei to aviod rounding error later on\n\n function getMaxCollateral(uint _cdpId, bytes32 _ilk, address _joinAddr) public view returns (uint) {\n\n uint price = getPrice(_ilk);\n\n\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n (, uint mat) = Spotter(SPOTTER_ADDRESS).ilks(_ilk);\n\n\n\n uint maxCollateral = sub(sub(collateral, (div(mul(mat, debt), price))), 10);\n\n\n\n uint normalizeMaxCollateral = maxCollateral;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n normalizeMaxCollateral = maxCollateral / (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n return normalizeMaxCollateral;\n\n }\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @dev Substracts 10 wei to aviod rounding error later on\n\n function getMaxDebt(uint _cdpId, bytes32 _ilk) public virtual view returns (uint) {\n\n uint price = getPrice(_ilk);\n\n\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(sub(div(mul(collateral, price), mat), debt), 10);\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint) {\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (,,uint spot,,) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n /// @notice Gets CDP ratio\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getRatio(uint _cdpId, bytes32 _ilk) public view returns (uint) {\n\n uint price = getPrice( _ilk);\n\n\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n if (debt == 0) return 0;\n\n\n\n return rdiv(wmul(collateral, price), debt);\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt, price, ilk)\n\n /// @param _cdpId Id of the CDP\n\n function getCdpDetailedInfo(uint _cdpId) public view returns (uint collateral, uint debt, uint price, bytes32 ilk) {\n\n address urn = manager.urns(_cdpId);\n\n ilk = manager.ilks(_cdpId);\n\n\n\n (collateral, debt) = vat.urns(ilk, urn);\n\n (,uint rate,,,) = vat.ilks(ilk);\n\n\n\n debt = rmul(debt, rate);\n\n price = getPrice(ilk);\n\n }\n\n\n\n}\n\ncontract MCDSaverTaker is MCDSaverProxy, GasBurner {\n\n\n\n address payable public constant MCD_SAVER_FLASH_LOAN = 0x28e444b53a9e7E3F6fFe50E93b18dCce7838551F;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n function boostWithLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable burnGas(25) {\n\n uint256 maxDebt = getMaxDebt(_cdpId, manager.ilks(_cdpId));\n\n\n\n uint256 loanAmount = sub(_exchangeData.srcAmount, maxDebt);\n\n uint maxLiq = getAvailableLiquidity(DAI_JOIN_ADDRESS);\n\n\n\n loanAmount = loanAmount > maxLiq ? maxLiq : loanAmount;\n\n\n\n if (maxDebt >= _exchangeData.srcAmount || maxLiq == 0) {\n\n if (_exchangeData.srcAmount > maxDebt) {\n\n _exchangeData.srcAmount = maxDebt;\n\n }\n\n\n\n boost(_exchangeData, _cdpId, _gasCost, _joinAddr);\n\n return;\n\n }\n\n\n\n MCD_SAVER_FLASH_LOAN.transfer(msg.value); // 0x fee\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 1);\n\n\n\n bytes memory paramsData = abi.encode(packExchangeData(_exchangeData), _cdpId, _gasCost, _joinAddr, false);\n\n\n\n lendingPool.flashLoan(MCD_SAVER_FLASH_LOAN, DAI_ADDRESS, loanAmount, paramsData);\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 0);\n\n }\n\n\n\n function repayWithLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable burnGas(25) {\n\n uint256 maxColl = getMaxCollateral(_cdpId, manager.ilks(_cdpId), _joinAddr);\n\n\n\n uint256 loanAmount = sub(_exchangeData.srcAmount, maxColl);\n\n uint maxLiq = getAvailableLiquidity(_joinAddr);\n\n\n\n loanAmount = loanAmount > maxLiq ? maxLiq : loanAmount;\n\n\n\n if (maxColl >= _exchangeData.srcAmount || maxLiq == 0) {\n\n if (_exchangeData.srcAmount > maxColl) {\n\n _exchangeData.srcAmount = maxColl;\n\n }\n\n\n\n repay(_exchangeData, _cdpId, _gasCost, _joinAddr);\n\n return;\n\n }\n\n\n\n MCD_SAVER_FLASH_LOAN.transfer(msg.value); // 0x fee\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 1);\n\n\n\n bytes memory paramsData = abi.encode(packExchangeData(_exchangeData), _cdpId, _gasCost, _joinAddr, true);\n\n\n\n lendingPool.flashLoan(MCD_SAVER_FLASH_LOAN, getAaveCollAddr(_joinAddr), loanAmount, paramsData);\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 0);\n\n }\n\n\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getMaxDebt(uint256 _cdpId, bytes32 _ilk) public override view returns (uint256) {\n\n uint256 price = getPrice(_ilk);\n\n\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (uint256 collateral, uint256 debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(wdiv(wmul(collateral, price), mat), debt);\n\n }\n\n\n\n function getAaveCollAddr(address _joinAddr) internal view returns (address) {\n\n if (_joinAddr == 0x2F0b23f53734252Bda2277357e97e1517d6B042A\n\n || _joinAddr == 0x775787933e92b709f2a3C70aa87999696e74A9F8) {\n\n return KYBER_ETH_ADDRESS;\n\n } else if (_joinAddr == DAI_JOIN_ADDRESS) {\n\n return DAI_ADDRESS;\n\n } else\n\n {\n\n return getCollateralAddr(_joinAddr);\n\n }\n\n }\n\n\n\n function getAvailableLiquidity(address _joinAddr) internal view returns (uint liquidity) {\n\n address tokenAddr = getAaveCollAddr(_joinAddr);\n\n\n\n if (tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n }\n\n\n\n function _packData(\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[6] memory numData, address[5] memory addrData, bytes memory callData) {\n\n\n\n numData = [\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x,\n\n _cdpId,\n\n _gasCost\n\n ];\n\n\n\n addrData = [\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper,\n\n _joinAddr\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n\n\n}\n\ncontract SavingsProxy is DSRSavingsProtocol, CompoundSavingsProtocol {\n\n address public constant ADAI_ADDRESS = 0xfC1E690f61EFd961294b3e1Ce3313fBD8aa4f85d;\n\n\n\n address public constant SAVINGS_DYDX_ADDRESS = 0x03b1565e070df392e48e7a8e01798C4B00E534A5;\n\n address public constant SAVINGS_AAVE_ADDRESS = 0x535B9035E9bA8D7efe0FeAEac885fb65b303E37C;\n\n address public constant NEW_IDAI_ADDRESS = 0x493C57C4763932315A328269E1ADaD09653B9081;\n\n\n\n address public constant COMP_ADDRESS = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n address public constant SAVINGS_LOGGER_ADDRESS = 0x89b3635BD2bAD145C6f92E82C9e83f06D5654984;\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n enum SavingsProtocol {Compound, Dydx, Fulcrum, Dsr, Aave}\n\n\n\n function deposit(SavingsProtocol _protocol, uint256 _amount) public {\n\n if (_protocol == SavingsProtocol.Dsr) {\n\n dsrDeposit(_amount, true);\n\n } else if (_protocol == SavingsProtocol.Compound) {\n\n compDeposit(msg.sender, _amount);\n\n } else {\n\n _deposit(_protocol, _amount, true);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logDeposit(msg.sender, uint8(_protocol), _amount);\n\n }\n\n\n\n function withdraw(SavingsProtocol _protocol, uint256 _amount) public {\n\n if (_protocol == SavingsProtocol.Dsr) {\n\n dsrWithdraw(_amount, true);\n\n } else if (_protocol == SavingsProtocol.Compound) {\n\n compWithdraw(msg.sender, _amount);\n\n } else {\n\n _withdraw(_protocol, _amount, true);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logWithdraw(msg.sender, uint8(_protocol), _amount);\n\n }\n\n\n\n function swap(SavingsProtocol _from, SavingsProtocol _to, uint256 _amount) public {\n\n if (_from == SavingsProtocol.Dsr) {\n\n dsrWithdraw(_amount, false);\n\n } else if (_from == SavingsProtocol.Compound) {\n\n compWithdraw(msg.sender, _amount);\n\n } else {\n\n _withdraw(_from, _amount, false);\n\n }\n\n\n\n // possible to withdraw 1-2 wei less than actual amount due to division precision\n\n // so we deposit all amount on DSProxy\n\n uint256 amountToDeposit = ERC20(DAI_ADDRESS).balanceOf(address(this));\n\n\n\n if (_to == SavingsProtocol.Dsr) {\n\n dsrDeposit(amountToDeposit, false);\n\n } else if (_from == SavingsProtocol.Compound) {\n\n compDeposit(msg.sender, _amount);\n\n } else {\n\n _deposit(_to, amountToDeposit, false);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logSwap(\n\n msg.sender,\n\n uint8(_from),\n\n uint8(_to),\n\n _amount\n\n );\n\n }\n\n\n\n function withdrawDai() public {\n\n ERC20(DAI_ADDRESS).transfer(msg.sender, ERC20(DAI_ADDRESS).balanceOf(address(this)));\n\n }\n\n\n\n function claimComp() public {\n\n ComptrollerInterface(COMP_ADDRESS).claimComp(address(this));\n\n }\n\n\n\n function getAddress(SavingsProtocol _protocol) public pure returns (address) {\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n return SAVINGS_DYDX_ADDRESS;\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Aave) {\n\n return SAVINGS_AAVE_ADDRESS;\n\n }\n\n }\n\n\n\n function _deposit(SavingsProtocol _protocol, uint256 _amount, bool _fromUser) internal {\n\n if (_fromUser) {\n\n ERC20(DAI_ADDRESS).transferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveDeposit(_protocol);\n\n\n\n ProtocolInterface(getAddress(_protocol)).deposit(address(this), _amount);\n\n\n\n endAction(_protocol);\n\n }\n\n\n\n function _withdraw(SavingsProtocol _protocol, uint256 _amount, bool _toUser) public {\n\n approveWithdraw(_protocol);\n\n\n\n ProtocolInterface(getAddress(_protocol)).withdraw(address(this), _amount);\n\n\n\n endAction(_protocol);\n\n\n\n if (_toUser) {\n\n withdrawDai();\n\n }\n\n }\n\n\n\n function endAction(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n setDydxOperator(false);\n\n }\n\n }\n\n\n\n function approveDeposit(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Compound || _protocol == SavingsProtocol.Fulcrum || _protocol == SavingsProtocol.Aave) {\n\n ERC20(DAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n ERC20(DAI_ADDRESS).approve(SOLO_MARGIN_ADDRESS, uint256(-1));\n\n setDydxOperator(true);\n\n }\n\n }\n\n\n\n function approveWithdraw(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Compound) {\n\n ERC20(NEW_CDAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n setDydxOperator(true);\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Fulcrum) {\n\n ERC20(NEW_IDAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Aave) {\n\n ERC20(ADAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n }\n\n\n\n function setDydxOperator(bool _trusted) internal {\n\n ISoloMargin.OperatorArg[] memory operatorArgs = new ISoloMargin.OperatorArg[](1);\n\n operatorArgs[0] = ISoloMargin.OperatorArg({\n\n operator: getAddress(SavingsProtocol.Dydx),\n\n trusted: _trusted\n\n });\n\n\n\n ISoloMargin(SOLO_MARGIN_ADDRESS).setOperators(operatorArgs);\n\n }\n\n}\n\ncontract LoanShifterReceiver is SaverExchangeCore, FlashLoanReceiverBase, AdminAuth {\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x597C52281b31B9d949a9D8fEbA08F7A2530a965e);\n\n\n\n struct ParamData {\n\n bytes proxyData1;\n\n bytes proxyData2;\n\n address proxy;\n\n address debtAddr;\n\n uint8 protocol1;\n\n uint8 protocol2;\n\n uint8 swapType;\n\n }\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (ParamData memory paramData, ExchangeData memory exchangeData)\n\n = packFunctionCall(_amount, _fee, _params);\n\n\n\n address protocolAddr1 = shifterRegistry.getAddr(getNameByProtocol(paramData.protocol1));\n\n address protocolAddr2 = shifterRegistry.getAddr(getNameByProtocol(paramData.protocol2));\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendToProxy(payable(paramData.proxy), _reserve, _amount);\n\n\n\n // Execute the Close/Change debt operation\n\n DSProxyInterface(paramData.proxy).execute(protocolAddr1, paramData.proxyData1);\n\n\n\n if (paramData.swapType == 1) { // COLL_SWAP\n\n exchangeData.srcAmount = getBalance(exchangeData.srcAddr);\n\n (, uint amount) = _sell(exchangeData);\n\n\n\n sendToProxy(payable(paramData.proxy), exchangeData.destAddr, amount);\n\n } else if (paramData.swapType == 2) { // DEBT_SWAP\n\n exchangeData.destAmount = (_amount + _fee);\n\n _buy(exchangeData);\n\n\n\n // Send extra to DSProxy\n\n sendToProxy(payable(paramData.proxy), exchangeData.srcAddr, ERC20(exchangeData.srcAddr).balanceOf(address(this)));\n\n\n\n } else { // NO_SWAP just send tokens to proxy\n\n sendToProxy(payable(paramData.proxy), exchangeData.srcAddr, getBalance(exchangeData.srcAddr));\n\n }\n\n\n\n // Execute the Open operation\n\n DSProxyInterface(paramData.proxy).execute(protocolAddr2, paramData.proxyData2);\n\n\n\n // Repay FL\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params)\n\n internal pure returns (ParamData memory paramData, ExchangeData memory exchangeData) {\n\n\n\n (\n\n uint[8] memory numData, // collAmount, debtAmount, id1, id2, srcAmount, destAmount, minPrice, price0x\n\n address[8] memory addrData, // addrLoan1, addrLoan2, debtAddr1, debtAddr2, srcAddr, destAddr, exchangeAddr, wrapper\n\n uint8[3] memory enumData, // fromProtocol, toProtocol, swapType\n\n bytes memory callData,\n\n address proxy\n\n )\n\n = abi.decode(_params, (uint256[8],address[8],uint8[3],bytes,address));\n\n\n\n bytes memory proxyData1;\n\n bytes memory proxyData2;\n\n uint openDebtAmount = (_amount + _fee);\n\n\n\n if (enumData[0] == 0) { // MAKER FROM\n\n proxyData1 = abi.encodeWithSignature(\"close(uint256,address,uint256,uint256)\", numData[2], addrData[0], _amount, numData[0]);\n\n\n\n } else if(enumData[0] == 1) { // COMPOUND FROM\n\n if (enumData[2] == 2) { // DEBT_SWAP\n\n proxyData1 = abi.encodeWithSignature(\"changeDebt(address,address,uint256,uint256)\", addrData[2], addrData[3], _amount, numData[4]);\n\n } else {\n\n proxyData1 = abi.encodeWithSignature(\"close(address,address,uint256,uint256)\", addrData[0], addrData[2], numData[0], numData[1]);\n\n }\n\n }\n\n\n\n if (enumData[1] == 0) { // MAKER TO\n\n proxyData2 = abi.encodeWithSignature(\"open(uint256,address,uint256)\", numData[3], addrData[1], openDebtAmount);\n\n } else if(enumData[1] == 1) { // COMPOUND TO\n\n if (enumData[2] == 2) { // DEBT_SWAP\n\n proxyData2 = abi.encodeWithSignature(\"repayAll(address)\", addrData[3]);\n\n } else {\n\n proxyData2 = abi.encodeWithSignature(\"open(address,address,uint256)\", addrData[1], addrData[3], openDebtAmount);\n\n }\n\n }\n\n\n\n\n\n paramData = ParamData({\n\n proxyData1: proxyData1,\n\n proxyData2: proxyData2,\n\n proxy: proxy,\n\n debtAddr: addrData[2],\n\n protocol1: enumData[0],\n\n protocol2: enumData[1],\n\n swapType: enumData[2]\n\n });\n\n\n\n exchangeData = SaverExchangeCore.ExchangeData({\n\n srcAddr: addrData[4],\n\n destAddr: addrData[5],\n\n srcAmount: numData[4],\n\n destAmount: numData[5],\n\n minPrice: numData[6],\n\n wrapper: addrData[7],\n\n exchangeAddr: addrData[6],\n\n callData: callData,\n\n price0x: numData[7]\n\n });\n\n\n\n }\n\n\n\n function sendToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n function getNameByProtocol(uint8 _proto) internal pure returns (string memory) {\n\n if (_proto == 0) {\n\n return \"MCD_SHIFTER\";\n\n } else if (_proto == 1) {\n\n return \"COMP_SHIFTER\";\n\n }\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n}\n\ncontract LoanShifterTaker is AdminAuth, ProxyPermission, GasBurner {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n\n\n Manager public constant manager = Manager(MANAGER_ADDRESS);\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x597C52281b31B9d949a9D8fEbA08F7A2530a965e);\n\n\n\n enum Protocols { MCD, COMPOUND }\n\n enum SwapType { NO_SWAP, COLL_SWAP, DEBT_SWAP }\n\n\n\n struct LoanShiftData {\n\n Protocols fromProtocol;\n\n Protocols toProtocol;\n\n SwapType swapType;\n\n bool wholeDebt;\n\n uint collAmount;\n\n uint debtAmount;\n\n address debtAddr1;\n\n address debtAddr2;\n\n address addrLoan1;\n\n address addrLoan2;\n\n uint id1;\n\n uint id2;\n\n }\n\n\n\n /// @notice Main entry point, it will move or transform a loan\n\n /// @dev Called through DSProxy\n\n function moveLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n LoanShiftData memory _loanShift\n\n ) public payable burnGas(20) {\n\n if (_isSameTypeVaults(_loanShift)) {\n\n _forkVault(_loanShift);\n\n return;\n\n }\n\n\n\n _callCloseAndOpen(_exchangeData, _loanShift);\n\n }\n\n\n\n //////////////////////// INTERNAL FUNCTIONS //////////////////////////\n\n\n\n function _callCloseAndOpen(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n LoanShiftData memory _loanShift\n\n ) internal {\n\n address protoAddr = shifterRegistry.getAddr(getNameByProtocol(uint8(_loanShift.fromProtocol)));\n\n\n\n if (_loanShift.wholeDebt) {\n\n _loanShift.debtAmount = ILoanShifter(protoAddr).getLoanAmount(_loanShift.id1, _loanShift.debtAddr1);\n\n }\n\n\n\n (\n\n uint[8] memory numData,\n\n address[8] memory addrData,\n\n uint8[3] memory enumData,\n\n bytes memory callData\n\n )\n\n = _packData(_loanShift, _exchangeData);\n\n\n\n // encode data\n\n bytes memory paramsData = abi.encode(numData, addrData, enumData, callData, address(this));\n\n\n\n address payable loanShifterReceiverAddr = payable(shifterRegistry.getAddr(\"LOAN_SHIFTER_RECEIVER\"));\n\n\n\n loanShifterReceiverAddr.transfer(address(this).balance);\n\n\n\n // call FL\n\n givePermission(loanShifterReceiverAddr);\n\n\n\n lendingPool.flashLoan(loanShifterReceiverAddr,\n\n getLoanAddr(_loanShift.debtAddr1, _loanShift.fromProtocol), _loanShift.debtAmount, paramsData);\n\n\n\n removePermission(loanShifterReceiverAddr);\n\n }\n\n\n\n function _forkVault(LoanShiftData memory _loanShift) internal {\n\n // Create new Vault to move to\n\n if (_loanShift.id2 == 0) {\n\n _loanShift.id2 = manager.open(manager.ilks(_loanShift.id1), address(this));\n\n }\n\n\n\n if (_loanShift.wholeDebt) {\n\n manager.shift(_loanShift.id1, _loanShift.id2);\n\n }\n\n }\n\n\n\n function _isSameTypeVaults(LoanShiftData memory _loanShift) internal pure returns (bool) {\n\n return _loanShift.fromProtocol == Protocols.MCD && _loanShift.toProtocol == Protocols.MCD\n\n && _loanShift.addrLoan1 == _loanShift.addrLoan2;\n\n }\n\n\n\n function getNameByProtocol(uint8 _proto) internal pure returns (string memory) {\n\n if (_proto == 0) {\n\n return \"MCD_SHIFTER\";\n\n } else if (_proto == 1) {\n\n return \"COMP_SHIFTER\";\n\n }\n\n }\n\n\n\n function getLoanAddr(address _address, Protocols _fromProtocol) internal returns (address) {\n\n if (_fromProtocol == Protocols.COMPOUND) {\n\n return CTokenInterface(_address).underlying();\n\n } else if (_fromProtocol == Protocols.MCD) {\n\n return DAI_ADDRESS;\n\n } else {\n\n return address(0);\n\n }\n\n }\n\n\n\n function _packData(\n\n LoanShiftData memory _loanShift,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[8] memory numData, address[8] memory addrData, uint8[3] memory enumData, bytes memory callData) {\n\n\n\n numData = [\n\n _loanShift.collAmount,\n\n _loanShift.debtAmount,\n\n _loanShift.id1,\n\n _loanShift.id2,\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n addrData = [\n\n _loanShift.addrLoan1,\n\n _loanShift.addrLoan2,\n\n _loanShift.debtAddr1,\n\n _loanShift.debtAddr2,\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper\n\n ];\n\n\n\n enumData = [\n\n uint8(_loanShift.fromProtocol),\n\n uint8(_loanShift.toProtocol),\n\n uint8(_loanShift.swapType)\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n\n\n}\n\ncontract CompShifter is CompoundSaverHelper {\n\n\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n function getLoanAmount(uint _cdpId, address _joinAddr) public returns(uint loanAmount) {\n\n return getWholeDebt(_cdpId, _joinAddr);\n\n }\n\n\n\n function getWholeDebt(uint _cdpId, address _joinAddr) public returns(uint loanAmount) {\n\n return CTokenInterface(_joinAddr).borrowBalanceCurrent(msg.sender);\n\n }\n\n\n\n function close(\n\n address _cCollAddr,\n\n address _cBorrowAddr,\n\n uint _collAmount,\n\n uint _debtAmount\n\n ) public {\n\n address collAddr = getUnderlyingAddr(_cCollAddr);\n\n\n\n // payback debt\n\n paybackDebt(_debtAmount, _cBorrowAddr, getUnderlyingAddr(_cBorrowAddr), tx.origin);\n\n\n\n require(CTokenInterface(_cCollAddr).redeemUnderlying(_collAmount) == 0);\n\n\n\n // Send back money to repay FL\n\n if (collAddr == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(collAddr).transfer(msg.sender, ERC20(collAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function changeDebt(\n\n address _cBorrowAddrOld,\n\n address _cBorrowAddrNew,\n\n uint _debtAmountOld,\n\n uint _debtAmountNew\n\n ) public {\n\n\n\n address borrowAddrNew = getUnderlyingAddr(_cBorrowAddrNew);\n\n\n\n // payback debt in one token\n\n paybackDebt(_debtAmountOld, _cBorrowAddrOld, getUnderlyingAddr(_cBorrowAddrOld), tx.origin);\n\n\n\n // draw debt in another one\n\n borrowCompound(_cBorrowAddrNew, _debtAmountNew);\n\n\n\n // Send back money to repay FL\n\n if (borrowAddrNew == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(borrowAddrNew).transfer(msg.sender, ERC20(borrowAddrNew).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function open(\n\n address _cCollAddr,\n\n address _cBorrowAddr,\n\n uint _debtAmount\n\n ) public {\n\n\n\n address collAddr = getUnderlyingAddr(_cCollAddr);\n\n address borrowAddr = getUnderlyingAddr(_cBorrowAddr);\n\n\n\n uint collAmount = 0;\n\n\n\n if (collAddr == ETH_ADDRESS) {\n\n collAmount = address(this).balance;\n\n } else {\n\n collAmount = ERC20(collAddr).balanceOf(address(this));\n\n }\n\n\n\n depositCompound(collAddr, _cCollAddr, collAmount);\n\n\n\n // draw debt\n\n borrowCompound(_cBorrowAddr, _debtAmount);\n\n\n\n // Send back money to repay FL\n\n if (borrowAddr == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(borrowAddr).transfer(msg.sender, ERC20(borrowAddr).balanceOf(address(this)));\n\n }\n\n\n\n }\n\n\n\n function repayAll(address _cTokenAddr) public {\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n uint amount = ERC20(tokenAddr).balanceOf(address(this));\n\n\n\n if (amount != 0) {\n\n paybackDebt(amount, _cTokenAddr, tokenAddr, tx.origin);\n\n }\n\n }\n\n\n\n function depositCompound(address _tokenAddr, address _cTokenAddr, uint _amount) internal {\n\n approveCToken(_tokenAddr, _cTokenAddr);\n\n\n\n enterMarket(_cTokenAddr);\n\n\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0, \"mint error\");\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: _amount}();\n\n }\n\n }\n\n\n\n function borrowCompound(address _cTokenAddr, uint _amount) internal {\n\n enterMarket(_cTokenAddr);\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n }\n\n\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n}\n\ncontract McdShifter is MCDSaverProxy {\n\n\n\n address public constant OPEN_PROXY_ACTIONS = 0x6d0984E80a86f26c0dd564ca0CF74a8E9Da03305;\n\n\n\n function getLoanAmount(uint _cdpId, address _joinAddr) public view virtual returns(uint loanAmount) {\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n (, uint rate,,,) = vat.ilks(ilk);\n\n (, uint art) = vat.urns(ilk, manager.urns(_cdpId));\n\n uint dai = vat.dai(manager.urns(_cdpId));\n\n\n\n uint rad = sub(mul(art, rate), dai);\n\n loanAmount = rad / RAY;\n\n\n\n loanAmount = mul(loanAmount, RAY) < rad ? loanAmount + 1 : loanAmount;\n\n }\n\n\n\n function close(\n\n uint _cdpId,\n\n address _joinAddr,\n\n uint _loanAmount,\n\n uint _collateral\n\n ) public {\n\n address owner = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n (uint maxColl, ) = getCdpInfo(manager, _cdpId, ilk);\n\n\n\n // repay dai debt cdp\n\n paybackDebt(_cdpId, ilk, _loanAmount, owner);\n\n\n\n maxColl = _collateral > maxColl ? maxColl : _collateral;\n\n\n\n // withdraw collateral from cdp\n\n drawMaxCollateral(_cdpId, _joinAddr, maxColl);\n\n\n\n // send back to msg.sender\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20 collToken = ERC20(getCollateralAddr(_joinAddr));\n\n collToken.transfer(msg.sender, collToken.balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function open(\n\n uint _cdpId,\n\n address _joinAddr,\n\n uint _debtAmount\n\n ) public {\n\n\n\n uint collAmount = 0;\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n collAmount = address(this).balance;\n\n } else {\n\n collAmount = ERC20(address(Join(_joinAddr).gem())).balanceOf(address(this));\n\n }\n\n\n\n if (_cdpId == 0) {\n\n openAndWithdraw(collAmount, _debtAmount, address(this), _joinAddr);\n\n } else {\n\n // add collateral\n\n addCollateral(_cdpId, _joinAddr, collAmount);\n\n // draw debt\n\n drawDai(_cdpId, manager.ilks(_cdpId), _debtAmount);\n\n }\n\n\n\n // transfer to repay FL\n\n ERC20(DAI_ADDRESS).transfer(msg.sender, ERC20(DAI_ADDRESS).balanceOf(address(this)));\n\n\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function openAndWithdraw(uint _collAmount, uint _debtAmount, address _proxy, address _joinAddrTo) internal {\n\n bytes32 ilk = Join(_joinAddrTo).ilk();\n\n\n\n if (_joinAddrTo == ETH_JOIN_ADDRESS) {\n\n MCDCreateProxyActions(OPEN_PROXY_ACTIONS).openLockETHAndDraw{value: address(this).balance}(\n\n address(manager),\n\n JUG_ADDRESS,\n\n ETH_JOIN_ADDRESS,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _debtAmount,\n\n _proxy\n\n );\n\n } else {\n\n ERC20(getCollateralAddr(_joinAddrTo)).approve(OPEN_PROXY_ACTIONS, uint256(-1));\n\n\n\n MCDCreateProxyActions(OPEN_PROXY_ACTIONS).openLockGemAndDraw(\n\n address(manager),\n\n JUG_ADDRESS,\n\n _joinAddrTo,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _collAmount,\n\n _debtAmount,\n\n true,\n\n _proxy\n\n );\n\n }\n\n }\n\n\n\n\n\n function drawMaxCollateral(uint _cdpId, address _joinAddr, uint _amount) internal returns (uint) {\n\n manager.frob(_cdpId, -toPositiveInt(_amount), 0);\n\n manager.flux(_cdpId, address(this), _amount);\n\n\n\n uint joinAmount = _amount;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n joinAmount = _amount / (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n Join(_joinAddr).exit(address(this), joinAmount);\n\n\n\n if (_joinAddr == ETH_JOIN_ADDRESS) {\n\n Join(_joinAddr).gem().withdraw(joinAmount); // Weth -> Eth\n\n }\n\n\n\n return joinAmount;\n\n }\n\n\n\n}\n\ncontract AaveSaverProxy is GasBurner, SaverExchangeCore, AaveHelper {\n\n\n\n\taddress public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n uint public constant VARIABLE_RATE = 2;\n\n\n\n\tfunction repay(ExchangeData memory _data, uint _gasCost) public payable burnGas(20) {\n\n\n\n\t\taddress lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n\t\taddress lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\t\taddress payable user = payable(getUserAddress());\n\n\n\n\t\t// redeem collateral\n\n\t\taddress aTokenCollateral = ILendingPool(lendingPoolCore).getReserveATokenAddress(_data.srcAddr);\n\n\t\tuint256 maxCollateral = IAToken(aTokenCollateral).balanceOf(address(this)); \n\n\t\t// don't swap more than maxCollateral\n\n\t\t_data.srcAmount = _data.srcAmount > maxCollateral ? maxCollateral : _data.srcAmount;\n\n\t\tIAToken(aTokenCollateral).redeem(_data.srcAmount);\n\n\n\n\t\tuint256 destAmount = _data.srcAmount;\n\n\t\tif (_data.srcAddr != _data.destAddr) {\n\n\t\t\t// swap\n\n\t\t\t(, destAmount) = _sell(_data);\n\n\t\t\tdestAmount -= getFee(destAmount, user, _gasCost, _data.destAddr);\n\n\t\t} else {\n\n\t\t\tdestAmount -= getGasCost(destAmount, user, _gasCost, _data.destAddr);\n\n\t\t}\n\n\n\n\t\t// payback\n\n\t\tif (_data.destAddr == ETH_ADDR) {\n\n\t\t\tILendingPool(lendingPool).repay{value: destAmount}(_data.destAddr, destAmount, payable(address(this)));\n\n\t\t} else {\n\n\t\t\tapproveToken(_data.destAddr, lendingPoolCore);\n\n\t\t\tILendingPool(lendingPool).repay(_data.destAddr, destAmount, payable(address(this)));\n\n\t\t}\n\n\n\n\t\t// first return 0x fee to msg.sender as it is the address that actually sent 0x fee\n\n\t\tsendContractBalance(ETH_ADDR, tx.origin, min(address(this).balance, msg.value));\n\n\t\t// send all leftovers from dest addr to proxy owner\n\n\t\tsendFullContractBalance(_data.destAddr, user);\n\n\n\n\t\tDefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveRepay\", abi.encode(_data.srcAddr, _data.destAddr, _data.srcAmount, destAmount));\n\n\t}\n\n\n\n\tfunction boost(ExchangeData memory _data, uint _gasCost) public payable burnGas(20) {\n\n\t\taddress lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n\t\taddress lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\t\t(,,,uint256 borrowRateMode,,,,,,bool collateralEnabled) = ILendingPool(lendingPool).getUserReserveData(_data.destAddr, address(this));\n\n\t\taddress payable user = payable(getUserAddress());\n\n\n\n\t\tuint256 maxBorrow = getMaxBoost(_data.srcAddr, _data.destAddr, address(this));\n\n\t\t_data.srcAmount = _data.srcAmount > maxBorrow ? maxBorrow : _data.srcAmount;\n\n\n\n\t\t// borrow amount\n\n\t\tILendingPool(lendingPool).borrow(_data.srcAddr, _data.srcAmount, borrowRateMode == 0 ? VARIABLE_RATE : borrowRateMode, AAVE_REFERRAL_CODE);\n\n\n\n\t\tuint256 destAmount;\n\n\t\tif (_data.destAddr != _data.srcAddr) {\n\n\t\t\t_data.srcAmount -= getFee(_data.srcAmount, user, _gasCost, _data.srcAddr);\n\n\t\t\t// swap\n\n\t\t\t(, destAmount) = _sell(_data);\n\n\t\t} else {\n\n\t\t\t_data.srcAmount -= getGasCost(_data.srcAmount, user, _gasCost, _data.srcAddr);\n\n\t\t\tdestAmount = _data.srcAmount;\n\n\t\t}\n\n\n\n\t\tif (_data.destAddr == ETH_ADDR) {\n\n\t\t\tILendingPool(lendingPool).deposit{value: destAmount}(_data.destAddr, destAmount, AAVE_REFERRAL_CODE);\n\n\t\t} else {\n\n\t\t\tapproveToken(_data.destAddr, lendingPoolCore);\n\n\t\t\tILendingPool(lendingPool).deposit(_data.destAddr, destAmount, AAVE_REFERRAL_CODE);\n\n\t\t}\n\n\n\n\t\tif (!collateralEnabled) {\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_data.destAddr, true);\n\n }\n\n\n\n\t\t// returning to msg.sender as it is the address that actually sent 0x fee\n\n\t\tsendContractBalance(ETH_ADDR, tx.origin, min(address(this).balance, msg.value));\n\n\t\t// send all leftovers from dest addr to proxy owner\n\n\t\tsendFullContractBalance(_data.destAddr, user);\n\n\n\n\t\tDefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveBoost\", abi.encode(_data.srcAddr, _data.destAddr, _data.srcAmount, destAmount));\n\n\t}\n\n}\n\ncontract AaveSaverReceiver is AaveHelper, AdminAuth, SaverExchangeCore {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant AAVE_SAVER_PROXY = 0x87358D288C8b7183bF5Ebc7cf9eE7014Df876c10;\n\n address public constant AAVE_BASIC_PROXY = 0xFEd96F5b99A888Cf2567e8da6D33E112f1BD9A14;\n\n address public constant AETH_ADDRESS = 0x3a3A65aAb0dd2A17E3F1947bA16138cd37d08c04;\n\n\n\n function callFunction(\n\n address sender,\n\n Account.Info memory account,\n\n bytes memory data\n\n ) public {\n\n\n\n (\n\n bytes memory exchangeDataBytes,\n\n uint256 gasCost,\n\n bool isRepay,\n\n uint256 ethAmount,\n\n uint256 txValue,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(data, (bytes,uint256,bool,uint256,uint256,address,address));\n\n\n\n // withdraw eth\n\n TokenInterface(WETH_ADDRESS).withdraw(ethAmount);\n\n\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n \n\n // deposit eth on behalf of proxy\n\n DSProxy(payable(proxy)).execute{value: ethAmount}(AAVE_BASIC_PROXY, abi.encodeWithSignature(\"deposit(address,uint256)\", ETH_ADDR, ethAmount));\n\n \n\n bytes memory functionData = packFunctionCall(exchangeDataBytes, gasCost, isRepay);\n\n DSProxy(payable(proxy)).execute{value: txValue}(AAVE_SAVER_PROXY, functionData);\n\n\n\n // withdraw deposited eth\n\n DSProxy(payable(proxy)).execute(AAVE_BASIC_PROXY, abi.encodeWithSignature(\"withdraw(address,address,uint256,bool)\", ETH_ADDR, AETH_ADDRESS, ethAmount, false));\n\n\n\n // deposit eth, get weth and return to sender\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n ERC20(WETH_ADDRESS).safeTransfer(proxy, ethAmount+2);\n\n }\n\n\n\n function packFunctionCall(bytes memory _exchangeDataBytes, uint256 _gasCost, bool _isRepay) internal returns (bytes memory) {\n\n ExchangeData memory exData = unpackExchangeData(_exchangeDataBytes);\n\n\n\n bytes memory functionData;\n\n\n\n if (_isRepay) {\n\n functionData = abi.encodeWithSignature(\"repay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\", exData, _gasCost);\n\n } else {\n\n functionData = abi.encodeWithSignature(\"boost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\", exData, _gasCost);\n\n }\n\n\n\n return functionData;\n\n }\n\n\n\n /// @dev if contract receive eth, convert it to WETH\n\n receive() external override payable {\n\n // deposit eth and get weth \n\n if (msg.sender == owner) {\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n }\n\n }\n\n}\n\ncontract AaveSaverTaker is DydxFlashLoanBase, ProxyPermission, GasBurner, SaverExchangeCore {\n\n\n\n address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address payable public constant AAVE_RECEIVER = 0x482Af2AcA80BFF9BFa9a0d1d958bBCC4A7f0586e;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n function repay(ExchangeData memory _data, uint256 _gasCost) public payable {\n\n _flashLoan(_data, _gasCost, true);\n\n }\n\n\n\n function boost(ExchangeData memory _data, uint256 _gasCost) public payable {\n\n _flashLoan(_data, _gasCost, false);\n\n }\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must send 2 wei with this transaction\n\n function _flashLoan(ExchangeData memory _data, uint _gasCost, bool _isRepay) internal {\n\n ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n\n\n uint256 ethAmount = ERC20(WETH_ADDR).balanceOf(SOLO_MARGIN_ADDRESS);\n\n\n\n // Get marketId from token address\n\n uint256 marketId = _getMarketIdFromTokenAddress(WETH_ADDR);\n\n\n\n // Calculate repay amount (_amount + (2 wei))\n\n // Approve transfer from\n\n uint256 repayAmount = _getRepaymentAmountInternal(ethAmount);\n\n ERC20(WETH_ADDR).approve(SOLO_MARGIN_ADDRESS, repayAmount);\n\n\n\n Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);\n\n\n\n operations[0] = _getWithdrawAction(marketId, ethAmount, AAVE_RECEIVER);\n\n AAVE_RECEIVER.transfer(msg.value);\n\n bytes memory encodedData = packExchangeData(_data);\n\n operations[1] = _getCallAction(\n\n abi.encode(encodedData, _gasCost, _isRepay, ethAmount, msg.value, proxyOwner(), address(this)),\n\n AAVE_RECEIVER\n\n );\n\n operations[2] = _getDepositAction(marketId, repayAmount, address(this));\n\n\n\n Account.Info[] memory accountInfos = new Account.Info[](1);\n\n accountInfos[0] = _getAccountInfo();\n\n\n\n givePermission(AAVE_RECEIVER);\n\n solo.operate(accountInfos, operations);\n\n removePermission(AAVE_RECEIVER);\n\n }\n\n}\n\ncontract CompoundLoanInfo is CompoundSafetyRatio {\n\n\n\n struct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint[] collAmounts;\n\n uint[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address cTokenAddress;\n\n address underlyingTokenAddress;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n address underlyingTokenAddress;\n\n uint supplyRate;\n\n uint borrowRate;\n\n uint exchangeRate;\n\n uint marketLiquidity;\n\n uint totalSupply;\n\n uint totalBorrow;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;\n\n\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches Compound prices for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _cTokens) public view returns (uint[] memory prices) {\n\n prices = new uint[](_cTokens.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n prices[i] = CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches Compound collateral factors for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _cTokens) public view returns (uint[] memory collFactors) {\n\n collFactors = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n (, collFactors[i]) = comp.markets(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in usd\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](assets.length),\n\n borrowAddr: new address[](assets.length),\n\n collAmounts: new uint[](assets.length),\n\n borrowAmounts: new uint[](assets.length)\n\n });\n\n\n\n uint collPos = 0;\n\n uint borrowPos = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in Usd\n\n if (cTokenBalance != 0) {\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, Exp memory tokensToUsd) = mulExp(exchangeRate, oraclePrice);\n\n\n\n data.collAddr[collPos] = asset;\n\n (, data.collAmounts[collPos]) = mulScalarTruncate(tokensToUsd, cTokenBalance);\n\n collPos++;\n\n }\n\n\n\n // Sum up debt in Usd\n\n if (borrowBalance != 0) {\n\n data.borrowAddr[borrowPos] = asset;\n\n (, data.borrowAmounts[borrowPos]) = mulScalarTruncate(oraclePrice, borrowBalance);\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _cTokens) public view returns (uint[] memory balances, uint[] memory borrows) {\n\n balances = new uint[](_cTokens.length);\n\n borrows = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; i++) {\n\n address asset = _cTokens[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, balances[i]) = mulScalarTruncate(exchangeRate, cTokenBalance);\n\n\n\n borrows[i] = borrowBalance;\n\n }\n\n\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in usd\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint[] memory ratios) {\n\n ratios = new uint[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfo[] memory tokens) {\n\n tokens = new TokenInfo[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n cTokenAddress: _cTokenAddresses[i],\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getFullTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfoFull[] memory tokens) {\n\n tokens = new TokenInfoFull[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n CTokenInterface cToken = CTokenInterface(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n supplyRate: cToken.supplyRatePerBlock(),\n\n borrowRate: cToken.borrowRatePerBlock(),\n\n exchangeRate: cToken.exchangeRateCurrent(),\n\n marketLiquidity: cToken.getCash(),\n\n totalSupply: cToken.totalSupply(),\n\n totalBorrow: cToken.totalBorrowsCurrent(),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n}\n\ncontract CompoundCreateReceiver is FlashLoanReceiverBase, SaverExchangeCore {\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x2E82103bD91053C781aaF39da17aE58ceE39d0ab);\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n constructor() public FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) {}\n\n\n\n struct CompCreateData {\n\n address payable proxyAddr;\n\n bytes proxyData;\n\n address cCollAddr;\n\n address cDebtAddr;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (CompCreateData memory compCreate, ExchangeData memory exchangeData)\n\n = packFunctionCall(_amount, _fee, _params);\n\n\n\n\n\n address leveragedAsset = _reserve;\n\n\n\n // If the assets are different\n\n if (compCreate.cCollAddr != compCreate.cDebtAddr) {\n\n (, uint sellAmount) = _sell(exchangeData);\n\n getFee(sellAmount, exchangeData.destAddr, compCreate.proxyAddr);\n\n\n\n leveragedAsset = exchangeData.destAddr;\n\n }\n\n\n\n // Send amount to DSProxy\n\n sendToProxy(compCreate.proxyAddr, leveragedAsset);\n\n\n\n address compOpenProxy = shifterRegistry.getAddr(\"COMP_SHIFTER\");\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(compCreate.proxyAddr).execute(compOpenProxy, compCreate.proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n // solhint-disable-next-line avoid-tx-origin\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (CompCreateData memory compCreate, ExchangeData memory exchangeData) {\n\n (\n\n uint[4] memory numData, // srcAmount, destAmount, minPrice, price0x\n\n address[6] memory cAddresses, // cCollAddr, cDebtAddr, srcAddr, destAddr, exchangeAddr, wrapper\n\n bytes memory callData,\n\n address proxy\n\n )\n\n = abi.decode(_params, (uint256[4],address[6],bytes,address));\n\n\n\n bytes memory proxyData = abi.encodeWithSignature(\n\n \"open(address,address,uint256)\",\n\n cAddresses[0], cAddresses[1], (_amount + _fee));\n\n\n\n exchangeData = SaverExchangeCore.ExchangeData({\n\n srcAddr: cAddresses[2],\n\n destAddr: cAddresses[3],\n\n srcAmount: numData[0],\n\n destAmount: numData[1],\n\n minPrice: numData[2],\n\n wrapper: cAddresses[5],\n\n exchangeAddr: cAddresses[4],\n\n callData: callData,\n\n price0x: numData[3]\n\n });\n\n\n\n compCreate = CompCreateData({\n\n proxyAddr: payable(proxy),\n\n proxyData: proxyData,\n\n cCollAddr: cAddresses[0],\n\n cDebtAddr: cAddresses[1]\n\n });\n\n\n\n return (compCreate, exchangeData);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n function sendToProxy(address payable _proxy, address _reserve) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, ERC20(_reserve).balanceOf(address(this)));\n\n } else {\n\n _proxy.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function getFee(uint _amount, address _tokenAddr, address _proxy) internal returns (uint feeAmount) {\n\n uint fee = 400;\n\n\n\n DSProxy proxy = DSProxy(payable(_proxy));\n\n address user = proxy.owner();\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (_tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n}\n\ncontract CompoundSaverFlashLoan is FlashLoanReceiverBase, SaverExchangeCore {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address payable public COMPOUND_SAVER_FLASH_PROXY = 0xcEAb38B5C88F33Dabe4D31BDD384E08215526632;\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n address public owner;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (bytes memory proxyData, address payable proxyAddr) = packFunctionCall(_amount, _fee, _params);\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendLoanToProxy(proxyAddr, _reserve, _amount);\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(proxyAddr).execute(COMPOUND_SAVER_FLASH_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n /// @return proxyData Formated function call data\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (bytes memory proxyData, address payable) {\n\n (\n\n bytes memory exDataBytes,\n\n address[2] memory cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 gasCost,\n\n bool isRepay,\n\n address payable proxyAddr\n\n )\n\n = abi.decode(_params, (bytes,address[2],uint256,bool,address));\n\n\n\n ExchangeData memory _exData = unpackExchangeData(exDataBytes);\n\n\n\n uint[2] memory flashLoanData = [_amount, _fee];\n\n\n\n if (isRepay) {\n\n proxyData = abi.encodeWithSignature(\"flashRepay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n } else {\n\n proxyData = abi.encodeWithSignature(\"flashBoost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n }\n\n\n\n return (proxyData, proxyAddr);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n /// @param _amount Amount of tokens\n\n function sendLoanToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n receive() external override(SaverExchangeCore, FlashLoanReceiverBase) payable {}\n\n}\n\ncontract CompoundSaverFlashProxy is SaverExchangeCore, CompoundSaverHelper {\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Repays the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashRepay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n // draw max coll\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(maxColl) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // swap max coll + loanAmount\n\n _exData.srcAmount = maxColl + _flashLoanData[0];\n\n (,swapAmount) = _sell(_exData);\n\n\n\n // get fee\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = (maxColl + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // payback debt\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // draw collateral for loanAmount + loanFee\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(collToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CompoundRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Boosts the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashBoost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n // borrow max amount\n\n uint borrowAmount = getMaxBorrow(_cAddresses[1], address(this));\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // get dfs fee\n\n borrowAmount -= getFee((borrowAmount + _flashLoanData[0]), user, _gasCost, _cAddresses[1]);\n\n _exData.srcAmount = (borrowAmount + _flashLoanData[0]);\n\n\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = (borrowAmount + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // deposit swaped collateral\n\n depositCollateral(collToken, _cAddresses[0], swapAmount);\n\n\n\n // borrow token to repay flash loan\n\n require(CTokenInterface(_cAddresses[1]).borrow(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(borrowToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CompoundBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Helper method to deposit tokens in Compound\n\n /// @param _collToken Token address of the collateral\n\n /// @param _cCollToken CToken address of the collateral\n\n /// @param _depositAmount Amount to deposit\n\n function depositCollateral(address _collToken, address _cCollToken, uint _depositAmount) internal {\n\n approveCToken(_collToken, _cCollToken);\n\n\n\n if (_collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cCollToken).mint(_depositAmount) == 0);\n\n } else {\n\n CEtherInterface(_cCollToken).mint{value: _depositAmount}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice Returns the tokens/ether to the msg.sender which is the FL contract\n\n /// @param _tokenAddr Address of token which we return\n\n /// @param _amount Amount to return\n\n function returnFlashLoan(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, _amount);\n\n }\n\n\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n}\n\ncontract CompoundSaverProxy is CompoundSaverHelper, SaverExchangeCore {\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Withdraws collateral, converts to borrowed token and repays debt\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n uint collAmount = (_exData.srcAmount > maxColl) ? maxColl : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(collAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n _exData.srcAmount = collAmount;\n\n\n\n (, swapAmount) = _sell(_exData);\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = collAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CompoundRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Borrows token, converts to collateral, and adds to position\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint borrowAmount = (_exData.srcAmount > maxBorrow) ? maxBorrow : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n borrowAmount -= getFee(borrowAmount, user, _gasCost, _cAddresses[1]);\n\n\n\n _exData.srcAmount = borrowAmount;\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = borrowAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n approveCToken(collToken, _cAddresses[0]);\n\n\n\n if (collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cAddresses[0]).mint(swapAmount) == 0);\n\n } else {\n\n CEtherInterface(_cAddresses[0]).mint{value: swapAmount}(); // reverts on fail\n\n }\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CompoundBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n}\n\ncontract CreamSaverFlashLoan is FlashLoanReceiverBase, SaverExchangeCore {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address payable public COMPOUND_SAVER_FLASH_PROXY = 0x1e012554891d271eDc80ba8eB146EA5FF596fA51;\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n address public owner;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (bytes memory proxyData, address payable proxyAddr) = packFunctionCall(_amount, _fee, _params);\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendLoanToProxy(proxyAddr, _reserve, _amount);\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(proxyAddr).execute(COMPOUND_SAVER_FLASH_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n /// @return proxyData Formated function call data\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (bytes memory proxyData, address payable) {\n\n (\n\n bytes memory exDataBytes,\n\n address[2] memory cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 gasCost,\n\n bool isRepay,\n\n address payable proxyAddr\n\n )\n\n = abi.decode(_params, (bytes,address[2],uint256,bool,address));\n\n\n\n ExchangeData memory _exData = unpackExchangeData(exDataBytes);\n\n\n\n uint[2] memory flashLoanData = [_amount, _fee];\n\n\n\n if (isRepay) {\n\n proxyData = abi.encodeWithSignature(\"flashRepay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n } else {\n\n proxyData = abi.encodeWithSignature(\"flashBoost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n }\n\n\n\n return (proxyData, proxyAddr);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n /// @param _amount Amount of tokens\n\n function sendLoanToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n receive() external override(SaverExchangeCore, FlashLoanReceiverBase) payable {}\n\n}\n\ncontract CreamSaverFlashProxy is SaverExchangeCore, CreamSaverHelper {\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Repays the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashRepay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n // draw max coll\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(maxColl) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // swap max coll + loanAmount\n\n _exData.srcAmount = maxColl + _flashLoanData[0];\n\n (,swapAmount) = _sell(_exData);\n\n\n\n // get fee\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = (maxColl + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // payback debt\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // draw collateral for loanAmount + loanFee\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(collToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CreamRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Boosts the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashBoost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n // borrow max amount\n\n uint borrowAmount = getMaxBorrow(_cAddresses[1], address(this));\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // get dfs fee\n\n borrowAmount -= getFee((borrowAmount + _flashLoanData[0]), user, _gasCost, _cAddresses[1]);\n\n _exData.srcAmount = (borrowAmount + _flashLoanData[0]);\n\n\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = (borrowAmount + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // deposit swaped collateral\n\n depositCollateral(collToken, _cAddresses[0], swapAmount);\n\n\n\n // borrow token to repay flash loan\n\n require(CTokenInterface(_cAddresses[1]).borrow(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(borrowToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CreamBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Helper method to deposit tokens in Compound\n\n /// @param _collToken Token address of the collateral\n\n /// @param _cCollToken CToken address of the collateral\n\n /// @param _depositAmount Amount to deposit\n\n function depositCollateral(address _collToken, address _cCollToken, uint _depositAmount) internal {\n\n approveCToken(_collToken, _cCollToken);\n\n\n\n if (_collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cCollToken).mint(_depositAmount) == 0);\n\n } else {\n\n CEtherInterface(_cCollToken).mint{value: _depositAmount}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice Returns the tokens/ether to the msg.sender which is the FL contract\n\n /// @param _tokenAddr Address of token which we return\n\n /// @param _amount Amount to return\n\n function returnFlashLoan(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, _amount);\n\n }\n\n\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n}\n\ncontract CreamSaverProxy is CreamSaverHelper, SaverExchangeCore {\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Withdraws collateral, converts to borrowed token and repays debt\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n uint collAmount = (_exData.srcAmount > maxColl) ? maxColl : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(collAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n (, swapAmount) = _sell(_exData);\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = collAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CreamRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Borrows token, converts to collateral, and adds to position\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint borrowAmount = (_exData.srcAmount > maxBorrow) ? maxBorrow : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n borrowAmount -= getFee(borrowAmount, user, _gasCost, _cAddresses[1]);\n\n\n\n _exData.srcAmount = borrowAmount;\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = borrowAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n approveCToken(collToken, _cAddresses[0]);\n\n\n\n if (collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cAddresses[0]).mint(swapAmount) == 0);\n\n } else {\n\n CEtherInterface(_cAddresses[0]).mint{value: swapAmount}(); // reverts on fail\n\n }\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CreamBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n}\n\ncontract SaverExchange is SaverExchangeCore, AdminAuth, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint256 public constant SERVICE_FEE = 800; // 0.125% Fee\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n uint public burnAmount = 10;\n\n\n\n /// @notice Takes a src amount of tokens and converts it into the dest token\n\n /// @dev Takes fee from the _srcAmount before the exchange\n\n /// @param exData [srcAddr, destAddr, srcAmount, destAmount, minPrice, exchangeType, exchangeAddr, callData, price0x]\n\n /// @param _user User address who called the exchange\n\n function sell(ExchangeData memory exData, address payable _user) public payable burnGas(burnAmount) {\n\n\n\n // take fee\n\n uint dfsFee = getFee(exData.srcAmount, exData.srcAddr);\n\n exData.srcAmount = sub(exData.srcAmount, dfsFee);\n\n\n\n // Perform the exchange\n\n (address wrapper, uint destAmount) = _sell(exData);\n\n\n\n // send back any leftover ether or tokens\n\n sendLeftover(exData.srcAddr, exData.destAddr, _user);\n\n\n\n // log the event\n\n logger.Log(address(this), msg.sender, \"ExchangeSell\", abi.encode(wrapper, exData.srcAddr, exData.destAddr, exData.srcAmount, destAmount));\n\n }\n\n\n\n /// @notice Takes a dest amount of tokens and converts it from the src token\n\n /// @dev Send always more than needed for the swap, extra will be returned\n\n /// @param exData [srcAddr, destAddr, srcAmount, destAmount, minPrice, exchangeType, exchangeAddr, callData, price0x]\n\n /// @param _user User address who called the exchange\n\n function buy(ExchangeData memory exData, address payable _user) public payable burnGas(burnAmount){\n\n\n\n uint dfsFee = getFee(exData.srcAmount, exData.srcAddr);\n\n exData.srcAmount = sub(exData.srcAmount, dfsFee);\n\n\n\n // Perform the exchange\n\n (address wrapper, uint srcAmount) = _buy(exData);\n\n\n\n // send back any leftover ether or tokens\n\n sendLeftover(exData.srcAddr, exData.destAddr, _user);\n\n\n\n // log the event\n\n logger.Log(address(this), msg.sender, \"ExchangeBuy\", abi.encode(wrapper, exData.srcAddr, exData.destAddr, srcAmount, exData.destAmount));\n\n\n\n }\n\n\n\n /// @notice Takes a feePercentage and sends it to wallet\n\n /// @param _amount Dai amount of the whole trade\n\n /// @param _token Address of the token\n\n /// @return feeAmount Amount in Dai owner earned on the fee\n\n function getFee(uint256 _amount, address _token) internal returns (uint256 feeAmount) {\n\n uint256 fee = SERVICE_FEE;\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(msg.sender)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(msg.sender);\n\n }\n\n\n\n if (fee == 0) {\n\n feeAmount = 0;\n\n } else {\n\n feeAmount = _amount / fee;\n\n if (_token == KYBER_ETH_ADDRESS) {\n\n WALLET_ID.transfer(feeAmount);\n\n } else {\n\n ERC20(_token).safeTransfer(WALLET_ID, feeAmount);\n\n }\n\n }\n\n }\n\n\n\n /// @notice Changes the amount of gas token we burn for each call\n\n /// @dev Only callable by the owner\n\n /// @param _newBurnAmount New amount of gas tokens to be burned\n\n function changeBurnAmount(uint _newBurnAmount) public {\n\n require(owner == msg.sender);\n\n\n\n burnAmount = _newBurnAmount;\n\n }\n\n\n\n}\n\ncontract MCDSaverFlashLoan is MCDSaverProxy, AdminAuth, FlashLoanReceiverBase {\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n struct SaverData {\n\n uint cdpId;\n\n uint gasCost;\n\n uint loanAmount;\n\n uint fee;\n\n address joinAddr;\n\n }\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n //check the contract has the specified balance\n\n require(_amount <= getBalanceInternal(address(this), _reserve),\n\n \"Invalid balance for the contract\");\n\n\n\n (\n\n bytes memory exDataBytes,\n\n uint cdpId,\n\n uint gasCost,\n\n address joinAddr,\n\n bool isRepay\n\n )\n\n = abi.decode(_params, (bytes,uint256,uint256,address,bool));\n\n\n\n ExchangeData memory exchangeData = unpackExchangeData(exDataBytes);\n\n\n\n SaverData memory saverData = SaverData({\n\n cdpId: cdpId,\n\n gasCost: gasCost,\n\n loanAmount: _amount,\n\n fee: _fee,\n\n joinAddr: joinAddr\n\n });\n\n\n\n if (isRepay) {\n\n repayWithLoan(exchangeData, saverData);\n\n } else {\n\n boostWithLoan(exchangeData, saverData);\n\n }\n\n\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function boostWithLoan(\n\n ExchangeData memory _exchangeData,\n\n SaverData memory _saverData\n\n ) internal {\n\n\n\n address user = getOwner(manager, _saverData.cdpId);\n\n\n\n // Draw users Dai\n\n uint maxDebt = getMaxDebt(_saverData.cdpId, manager.ilks(_saverData.cdpId));\n\n uint daiDrawn = drawDai(_saverData.cdpId, manager.ilks(_saverData.cdpId), maxDebt);\n\n\n\n // Calc. fees\n\n uint dsfFee = getFee((daiDrawn + _saverData.loanAmount), _saverData.gasCost, user);\n\n uint afterFee = (daiDrawn + _saverData.loanAmount) - dsfFee;\n\n\n\n // Swap\n\n _exchangeData.srcAmount = afterFee;\n\n (, uint swapedAmount) = _sell(_exchangeData);\n\n\n\n // Return collateral\n\n addCollateral(_saverData.cdpId, _saverData.joinAddr, swapedAmount);\n\n\n\n // Draw Dai to repay the flash loan\n\n drawDai(_saverData.cdpId, manager.ilks(_saverData.cdpId), (_saverData.loanAmount + _saverData.fee));\n\n\n\n logger.Log(address(this), msg.sender, \"MCDFlashBoost\", abi.encode(_saverData.cdpId, owner, _exchangeData.srcAmount, swapedAmount));\n\n }\n\n\n\n function repayWithLoan(\n\n ExchangeData memory _exchangeData,\n\n SaverData memory _saverData\n\n ) internal {\n\n\n\n address user = getOwner(manager, _saverData.cdpId);\n\n bytes32 ilk = manager.ilks(_saverData.cdpId);\n\n\n\n // Draw collateral\n\n uint maxColl = getMaxCollateral(_saverData.cdpId, ilk, _saverData.joinAddr);\n\n uint collDrawn = drawCollateral(_saverData.cdpId, _saverData.joinAddr, maxColl);\n\n\n\n // Swap\n\n _exchangeData.srcAmount = (_saverData.loanAmount + collDrawn);\n\n (, uint swapedAmount) = _sell(_exchangeData);\n\n\n\n uint paybackAmount = (swapedAmount - getFee(swapedAmount, _saverData.gasCost, user));\n\n paybackAmount = limitLoanAmount(_saverData.cdpId, ilk, paybackAmount, user);\n\n\n\n // Payback the debt\n\n paybackDebt(_saverData.cdpId, ilk, paybackAmount, user);\n\n\n\n // Draw collateral to repay the flash loan\n\n drawCollateral(_saverData.cdpId, _saverData.joinAddr, (_saverData.loanAmount + _saverData.fee));\n\n\n\n logger.Log(address(this), msg.sender, \"MCDFlashRepay\", abi.encode(_saverData.cdpId, owner, _exchangeData.srcAmount, swapedAmount));\n\n }\n\n\n\n /// @notice Handles that the amount is not bigger than cdp debt and not dust\n\n function limitLoanAmount(uint _cdpId, bytes32 _ilk, uint _paybackAmount, address _owner) internal returns (uint256) {\n\n uint debt = getAllDebt(address(vat), manager.urns(_cdpId), manager.urns(_cdpId), _ilk);\n\n\n\n if (_paybackAmount > debt) {\n\n ERC20(DAI_ADDRESS).transfer(_owner, (_paybackAmount - debt));\n\n return debt;\n\n }\n\n\n\n uint debtLeft = debt - _paybackAmount;\n\n\n\n (,,,, uint dust) = vat.ilks(_ilk);\n\n dust = dust / 10**27;\n\n\n\n // Less than dust value\n\n if (debtLeft < dust) {\n\n uint amountOverDust = (dust - debtLeft);\n\n\n\n ERC20(DAI_ADDRESS).transfer(_owner, amountOverDust);\n\n\n\n return (_paybackAmount - amountOverDust);\n\n }\n\n\n\n return _paybackAmount;\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n\n\n}\n\ncontract CompoundFlashLoanTaker is CompoundSaverProxy, ProxyPermission, GasBurner {\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_SAVER_FLASH_LOAN = 0xCeB190A35D9D4804b9CE8d0CF79239f6949BfCcB;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n /// @notice Repays the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repayWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(25) {\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxColl || availableLiquidity == 0) {\n\n repay(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxColl);\n\n if (loanAmount > availableLiquidity) loanAmount = availableLiquidity;\n\n bytes memory encoded = packExchangeData(_exData);\n\n bytes memory paramsData = abi.encode(encoded, _cAddresses, _gasCost, true, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[0]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundFlashRepay\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[0]));\n\n }\n\n }\n\n\n\n /// @notice Boosts the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boostWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(20) {\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxBorrow || availableLiquidity == 0) {\n\n boost(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxBorrow);\n\n if (loanAmount > availableLiquidity) loanAmount = availableLiquidity;\n\n bytes memory paramsData = abi.encode(packExchangeData(_exData), _cAddresses, _gasCost, false, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[1]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundFlashBoost\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[1]));\n\n }\n\n\n\n }\n\n\n\n function getAvailableLiquidity(address _tokenAddr) internal view returns (uint liquidity) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(_tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n }\n\n}\n\ncontract CreamFlashLoanTaker is CreamSaverProxy, ProxyPermission, GasBurner {\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_SAVER_FLASH_LOAN = 0x3ceD2067c0B057611e4E2686Dbe40028962Cc625;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n /// @notice Repays the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repayWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(25) {\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxColl || availableLiquidity == 0) {\n\n repay(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxColl);\n\n bytes memory encoded = packExchangeData(_exData);\n\n bytes memory paramsData = abi.encode(encoded, _cAddresses, _gasCost, true, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[0]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamFlashRepay\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[0]));\n\n }\n\n }\n\n\n\n /// @notice Boosts the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boostWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(20) {\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxBorrow || availableLiquidity == 0) {\n\n boost(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxBorrow);\n\n bytes memory paramsData = abi.encode(packExchangeData(_exData), _cAddresses, _gasCost, false, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[1]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamFlashBoost\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[1]));\n\n }\n\n\n\n }\n\n\n\n function getAvailableLiquidity(address _tokenAddr) internal view returns (uint liquidity) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(_tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n 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true, \"error\": null, \"results\": {\"detectors\": [{\"check\": \"tx-origin\", \"impact\": \"Medium\", \"confidence\": \"Medium\"}, {\"check\": \"name-reused\", \"impact\": \"High\", \"confidence\": \"High\"}, {\"check\": \"erc20-interface\", \"impact\": \"Medium\", \"confidence\": \"High\"}, {\"check\": \"arbitrary-send\", \"impact\": \"High\", \"confidence\": \"Medium\"}, {\"check\": \"unchecked-lowlevel\", \"impact\": \"Medium\", \"confidence\": \"Medium\"}, {\"check\": \"incorrect-equality\", \"impact\": \"Medium\", \"confidence\": \"High\"}, {\"check\": \"uninitialized-local\", \"impact\": \"Medium\", \"confidence\": \"Medium\"}, {\"check\": \"unchecked-transfer\", \"impact\": \"High\", \"confidence\": \"Medium\"}, {\"check\": \"unused-return\", \"impact\": \"Medium\", \"confidence\": \"Medium\"}, {\"check\": \"locked-ether\", \"impact\": \"Medium\", \"confidence\": \"High\"}]}}"},"success":{"kind":"bool","value":true,"string":"true"},"error":{"kind":"null"},"results":{"kind":"string","value":"{'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowlevel', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'uninitialized-local', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'locked-ether', 'impact': 'Medium', 'confidence': 'High'}]}"},"input_ids":{"kind":"list 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0":{"kind":"number","value":597,"string":"597"},"address":{"kind":"string","value":"0xd05bba08a7a2209896cd5df11ffa0211bb03d418"},"source_code":{"kind":"string","value":"pragma solidity 0.7.4;\n\nlibrary Address {\n\n\n /**\n\n\n * @dev Returns true if `account` is a contract.\n\n\n *\n\n\n * [IMPORTANT]\n\n\n * ====\n\n\n * It is unsafe to assume that an address for which this function returns\n\n\n * false is an externally-owned account (EOA) and not a contract.\n\n\n *\n\n\n * Among others, `isContract` will return false for the following\n\n\n * types of addresses:\n\n\n *\n\n\n * - an externally-owned account\n\n\n * - a contract in construction\n\n\n * - an address where a contract will be created\n\n\n * - an address where a contract lived, but was destroyed\n\n\n * ====\n\n\n */\n\n\n function isContract(address account) internal view returns (bool) {\n\n\n // According to EIP-1052, 0x0 is the value returned for not-yet created accounts\n\n\n // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned\n\n\n // for accounts without code, i.e. `keccak256('')`\n\n\n bytes32 codehash;\n\n\n bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;\n\n\n // solhint-disable-next-line no-inline-assembly\n\n\n assembly { codehash := extcodehash(account) }\n\n\n return (codehash != accountHash && codehash != 0x0);\n\n\n }\n\n\n\n\n\n function functionCallWithValue(address target, bytes memory data, uint256 weiValue) internal returns (bytes memory) {\n\n\n // solhint-disable-next-line avoid-low-level-calls\n\n\n require(data.length == 0 || isContract(target));\n\n\n (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\n\n\n if (success) {\n\n\n return returndata;\n\n\n } else {\n\n\n revert(string(returndata));\n\n\n }\n\n\n }\n\n\n}\n\ncontract MultiSigFactory {\n\n\n\n\n\n event ContractCreated(address contractAddress, string typeName);\n\n\n\n\n\n function create(address owner) public returns (address) {\n\n\n address instance = address(new MultiSig(owner));\n\n\n emit ContractCreated(instance, \"MultiSig\");\n\n\n return instance;\n\n\n }\n\n\n\n\n\n function predict(address owner, bytes32 salt) public view returns (address) {\n\n\n return address(uint(keccak256(abi.encodePacked(byte(0xff), address(this), salt,\n\n\n keccak256(abi.encodePacked(type(MultiSig).creationCode, owner))\n\n\n ))));\n\n\n }\n\n\n\n\n\n function create(address owner, bytes32 salt) public returns (address) {\n\n\n address instance = address(new MultiSig{salt: salt}(owner));\n\n\n emit ContractCreated(instance, \"MultiSig\");\n\n\n return instance;\n\n\n }\n\n\n}\n\ncontract Nonce {\n\n\n\n\n\n uint256 public constant MAX_INCREASE = 100;\n\n\n \n\n\n uint256 private compound;\n\n\n \n\n\n constructor(){\n\n\n setBoth(128, 0);\n\n\n }\n\n\n \n\n\n /**\n\n\n * The next recommended nonce, which is the highest nonce ever used plus one.\n\n\n */\n\n\n function nextNonce() public view returns (uint256){\n\n\n return getMax() + 1;\n\n\n }\n\n\n\n\n\n /**\n\n\n * Returns whether the provided nonce can be used.\n\n\n * For the 100 nonces in the interval [nextNonce(), nextNonce + 99], this is always true.\n\n\n * For the nonces in the interval [nextNonce() - 129, nextNonce() - 1], this is true for the nonces that have not been used yet.\n\n\n */ \n\n\n function isFree(uint128 nonce) public view returns (bool){\n\n\n uint128 max = getMax();\n\n\n return isValidHighNonce(max, nonce) || isValidLowNonce(max, getRegister(), nonce);\n\n\n }\n\n\n\n\n\n /**\n\n\n * Flags the given nonce as used.\n\n\n * Reverts if the provided nonce is not free.\n\n\n */\n\n\n function flagUsed(uint128 nonce) public {\n\n\n uint256 comp = compound;\n\n\n uint128 max = uint128(comp);\n\n\n uint128 reg = uint128(comp >> 128);\n\n\n if (isValidHighNonce(max, nonce)){\n\n\n setBoth(nonce, ((reg << 1) | 0x1) << (nonce - max - 1));\n\n\n } else if (isValidLowNonce(max, reg, nonce)){\n\n\n setBoth(max, uint128(reg | 0x1 << (max - nonce - 1)));\n\n\n } else {\n\n\n require(false);\n\n\n }\n\n\n }\n\n\n \n\n\n function getMax() private view returns (uint128) {\n\n\n return uint128(compound);\n\n\n }\n\n\n \n\n\n function getRegister() private view returns (uint128) {\n\n\n return uint128(compound >> 128);\n\n\n }\n\n\n \n\n\n function setBoth(uint128 max, uint128 reg) private {\n\n\n compound = uint256(reg) << 128 | max;\n\n\n }\n\n\n\n\n\n function isValidHighNonce(uint128 max, uint128 nonce) private pure returns (bool){\n\n\n return nonce > max && nonce <= max + MAX_INCREASE;\n\n\n }\n\n\n\n\n\n function isValidLowNonce(uint128 max, uint128 reg, uint256 nonce) private pure returns (bool){\n\n\n uint256 diff = max - nonce;\n\n\n return diff > 0 && diff <= 128 && ((0x1 << (diff - 1)) & reg == 0);\n\n\n }\n\n\n \n\n\n}\n\nlibrary RLPEncode {\n\n\n uint8 constant STRING_SHORT_PREFIX = 0x80;\n\n\n uint8 constant STRING_LONG_PREFIX = 0xb7;\n\n\n uint8 constant LIST_SHORT_PREFIX = 0xc0;\n\n\n uint8 constant LIST_LONG_PREFIX = 0xf7;\n\n\n\n\n\n /// @dev Rlp encodes a bytes\n\n\n /// @param self The bytes to be encoded\n\n\n /// @return The rlp encoded bytes\n\n\n function encodeBytes(bytes memory self) internal pure returns (bytes memory) {\n\n\n if(self.length == 1 && self[0] < 0x80) {\n\n\n return self;\n\n\n } else {\n\n\n return encode(self, STRING_SHORT_PREFIX, STRING_LONG_PREFIX);\n\n\n }\n\n\n }\n\n\n \n\n\n /// @dev Rlp encodes a bytes[]. Note that the items in the bytes[] will not automatically be rlp encoded.\n\n\n /// @param self The bytes[] to be encoded\n\n\n /// @return The rlp encoded bytes[]\n\n\n function encodeList(bytes[] memory self) internal pure returns (bytes memory) {\n\n\n bytes memory list = flatten(self);\n\n\n return encode(list, LIST_SHORT_PREFIX, LIST_LONG_PREFIX);\n\n\n }\n\n\n\n\n\n function encode(bytes memory self, uint8 prefix1, uint8 prefix2) private pure returns (bytes memory) {\n\n\n uint selfPtr;\n\n\n assembly { selfPtr := add(self, 0x20) }\n\n\n\n\n\n uint len = self.length;\n\n\n if(len <= 55) {\n\n\n bytes memory encoded = new bytes(len+1);\n\n\n uint8 lenshort = uint8(len);\n\n\n // length encoding byte\n\n\n encoded[0] = byte(prefix1+lenshort);\n\n\n\n\n\n // string/list contents\n\n\n uint encodedPtr;\n\n\n assembly { encodedPtr := add(encoded, 0x21) }\n\n\n memcpy(encodedPtr, selfPtr, len);\n\n\n return encoded;\n\n\n } else {\n\n\n uint8 lenLen;\n\n\n uint i = 0x1;\n\n\n while(len/i != 0) {\n\n\n lenLen++;\n\n\n i *= 0x100;\n\n\n }\n\n\n\n\n\n // 1 is the length of the length of the length\n\n\n bytes memory encoded = new bytes(1+lenLen+len);\n\n\n\n\n\n // length of the length encoding byte\n\n\n encoded[0] = byte(prefix2+lenLen);\n\n\n\n\n\n // length bytes\n\n\n for(i=1; i<=lenLen; i++) {\n\n\n encoded[i] = byte(uint8((len/(0x100**(lenLen-i)))%0x100));\n\n\n }\n\n\n\n\n\n // string/list contents\n\n\n uint encodedPtr;\n\n\n assembly { encodedPtr := add(add(encoded, 0x21), lenLen) }\n\n\n memcpy(encodedPtr, selfPtr, len);\n\n\n return encoded;\n\n\n }\n\n\n }\n\n\n \n\n\n function flatten(bytes[] memory self) private pure returns (bytes memory) {\n\n\n if(self.length == 0) {\n\n\n return new bytes(0);\n\n\n }\n\n\n\n\n\n uint len;\n\n\n for(uint i=0; i<self.length; i++) {\n\n\n len += self[i].length;\n\n\n }\n\n\n\n\n\n bytes memory flattened = new bytes(len);\n\n\n uint flattenedPtr;\n\n\n assembly { flattenedPtr := add(flattened, 0x20) }\n\n\n\n\n\n for(uint i=0; i<self.length; i++) {\n\n\n bytes memory item = self[i];\n\n\n \n\n\n uint selfPtr;\n\n\n assembly { selfPtr := add(item, 0x20)}\n\n\n\n\n\n memcpy(flattenedPtr, selfPtr, item.length);\n\n\n flattenedPtr += self[i].length;\n\n\n }\n\n\n\n\n\n return flattened;\n\n\n }\n\n\n\n\n\n /// This function is from Nick Johnson's string utils library\n\n\n function memcpy(uint dest, uint src, uint len) private pure {\n\n\n // Copy word-length chunks while possible\n\n\n for(; len >= 32; len -= 32) {\n\n\n assembly {\n\n\n mstore(dest, mload(src))\n\n\n }\n\n\n dest += 32;\n\n\n src += 32;\n\n\n }\n\n\n\n\n\n // Copy remaining bytes\n\n\n uint mask = 256 ** (32 - len) - 1;\n\n\n assembly {\n\n\n let srcpart := and(mload(src), not(mask))\n\n\n let destpart := and(mload(dest), mask)\n\n\n mstore(dest, or(destpart, srcpart))\n\n\n }\n\n\n }\n\n\n}\n\ncontract MultiSig is Nonce {\n\n\n\n\n\n mapping (address => uint8) public signers; // The addresses that can co-sign transactions and the number of signatures needed\n\n\n\n\n\n uint16 public signerCount;\n\n\n bytes public contractId; // most likely unique id of this contract\n\n\n\n\n\n event SignerChange(\n\n\n address indexed signer,\n\n\n uint8 cosignaturesNeeded\n\n\n );\n\n\n\n\n\n event Transacted(\n\n\n address indexed toAddress, // The address the transaction was sent to\n\n\n bytes4 selector, // selected operation\n\n\n address[] signers // Addresses of the signers used to initiate the transaction\n\n\n );\n\n\n\n\n\n constructor (address owner) {\n\n\n // We use the gas price to get a unique id into our transactions.\n\n\n // Note that 32 bits do not guarantee that no one can generate a contract with the\n\n\n // same id, but it practically rules out that someone accidentally creates two\n\n\n // two multisig contracts with the same id, and that's all we need to prevent\n\n\n // replay-attacks.\n\n\n contractId = toBytes(uint32(address(this)));\n\n\n _setSigner(owner, 1); // set initial owner\n\n\n }\n\n\n\n\n\n /**\n\n\n * It should be possible to store ether on this address.\n\n\n */\n\n\n receive() external payable {\n\n\n }\n\n\n\n\n\n /**\n\n\n * Checks if the provided signatures suffice to sign the transaction and if the nonce is correct.\n\n\n */\n\n\n function checkSignatures(uint128 nonce, address to, uint value, bytes calldata data,\n\n\n uint8[] calldata v, bytes32[] calldata r, bytes32[] calldata s) public view returns (address[] memory) {\n\n\n bytes32 transactionHash = calculateTransactionHash(nonce, contractId, to, value, data);\n\n\n return verifySignatures(transactionHash, v, r, s);\n\n\n }\n\n\n\n\n\n /**\n\n\n * Checks if the execution of a transaction would succeed if it was properly signed.\n\n\n */\n\n\n function checkExecution(address to, uint value, bytes calldata data) public {\n\n\n Address.functionCallWithValue(to, data, value);\n\n\n require(false, \"Test passed. Reverting.\");\n\n\n }\n\n\n\n\n\n function execute(uint128 nonce, address to, uint value, bytes calldata data, uint8[] calldata v, bytes32[] calldata r, bytes32[] calldata s) public returns (bytes memory) {\n\n\n bytes32 transactionHash = calculateTransactionHash(nonce, contractId, to, value, data);\n\n\n address[] memory found = verifySignatures(transactionHash, v, r, s);\n\n\n bytes memory returndata = Address.functionCallWithValue(to, data, value);\n\n\n flagUsed(nonce);\n\n\n emit Transacted(to, extractSelector(data), found);\n\n\n return returndata;\n\n\n }\n\n\n\n\n\n function extractSelector(bytes calldata data) private pure returns (bytes4){\n\n\n if (data.length < 4){\n\n\n return bytes4(0);\n\n\n } else {\n\n\n return bytes4(data[0]) | (bytes4(data[1]) >> 8) | (bytes4(data[2]) >> 16) | (bytes4(data[3]) >> 24);\n\n\n }\n\n\n }\n\n\n\n\n\n function toBytes(uint number) internal pure returns (bytes memory){\n\n\n uint len = 0;\n\n\n uint temp = 1;\n\n\n while (number >= temp){\n\n\n temp = temp << 8;\n\n\n len++;\n\n\n }\n\n\n temp = number;\n\n\n bytes memory data = new bytes(len);\n\n\n for (uint i = len; i>0; i--) {\n\n\n data[i-1] = bytes1(uint8(temp));\n\n\n temp = temp >> 8;\n\n\n }\n\n\n return data;\n\n\n }\n\n\n\n\n\n // Note: does not work with contract creation\n\n\n function calculateTransactionHash(uint128 sequence, bytes storage id, address to, uint value, bytes calldata data)\n\n\n private pure returns (bytes32){\n\n\n bytes[] memory all = new bytes[](9);\n\n\n all[0] = toBytes(sequence); // sequence number instead of nonce\n\n\n all[1] = id; // contract id instead of gas price\n\n\n all[2] = toBytes(21000); // gas limit\n\n\n all[3] = abi.encodePacked(to);\n\n\n all[4] = toBytes(value);\n\n\n all[5] = data;\n\n\n all[6] = toBytes(1);\n\n\n all[7] = toBytes(0);\n\n\n for (uint i = 0; i<8; i++){\n\n\n all[i] = RLPEncode.encodeBytes(all[i]);\n\n\n }\n\n\n all[8] = all[7];\n\n\n return keccak256(RLPEncode.encodeList(all));\n\n\n }\n\n\n\n\n\n function verifySignatures(bytes32 transactionHash, uint8[] calldata v, bytes32[] calldata r, bytes32[] calldata s)\n\n\n private view returns (address[] memory) {\n\n\n address[] memory found = new address[](r.length);\n\n\n for (uint i = 0; i < r.length; i++) {\n\n\n address signer = ecrecover(transactionHash, v[i], r[i], s[i]);\n\n\n uint8 cosignaturesNeeded = signers[signer];\n\n\n require(cosignaturesNeeded > 0 && cosignaturesNeeded <= r.length, \"cosigner error\");\n\n\n found[i] = signer;\n\n\n }\n\n\n requireNoDuplicates(found);\n\n\n return found;\n\n\n }\n\n\n\n\n\n function requireNoDuplicates(address[] memory found) private pure {\n\n\n for (uint i = 0; i < found.length; i++) {\n\n\n for (uint j = i+1; j < found.length; j++) {\n\n\n require(found[i] != found[j], \"duplicate signature\");\n\n\n }\n\n\n }\n\n\n }\n\n\n\n\n\n /**\n\n\n * Call this method through execute\n\n\n */\n\n\n function setSigner(address signer, uint8 cosignaturesNeeded) public authorized {\n\n\n _setSigner(signer, cosignaturesNeeded);\n\n\n require(signerCount > 0);\n\n\n }\n\n\n\n\n\n function migrate(address destination) public {\n\n\n _migrate(msg.sender, destination);\n\n\n }\n\n\n\n\n\n function migrate(address source, address destination) public authorized {\n\n\n _migrate(source, destination);\n\n\n }\n\n\n\n\n\n function _migrate(address source, address destination) private {\n\n\n require(signers[destination] == 0); // do not overwrite existing signer!\n\n\n _setSigner(destination, signers[source]);\n\n\n _setSigner(source, 0);\n\n\n }\n\n\n\n\n\n function _setSigner(address signer, uint8 cosignaturesNeeded) private {\n\n\n require(!Address.isContract(signer), \"signer cannot be a contract\");\n\n\n uint8 prevValue = signers[signer];\n\n\n signers[signer] = cosignaturesNeeded;\n\n\n if (prevValue > 0 && cosignaturesNeeded == 0){\n\n\n signerCount--;\n\n\n } else if (prevValue == 0 && cosignaturesNeeded > 0){\n\n\n signerCount++;\n\n\n }\n\n\n emit SignerChange(signer, cosignaturesNeeded);\n\n\n }\n\n\n\n\n\n modifier authorized() {\n\n\n require(address(this) == msg.sender || signers[msg.sender] == 1, \"not authorized\");\n\n\n _;\n\n\n 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0":{"kind":"number","value":598,"string":"598"},"address":{"kind":"string","value":"0xd06e1333b979c85e220abb557a67295c00de4942"},"source_code":{"kind":"string","value":"pragma solidity 0.4.18;\n\ncontract ERC20Basic {\n\n function totalSupply() public view returns (uint256);\n\n function balanceOf(address who) public view returns (uint256);\n\n function transfer(address to, uint256 value) public returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n}\n\ncontract ApproveAndCallFallBack {\n\n function receiveApproval(address from, uint256 tokens, address token, bytes data) public;\n\n}\n\ncontract Ownable {\n\n address public owner;\n\n\n\n\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n\n\n function Ownable() public {\n\n owner = msg.sender;\n\n }\n\n\n\n modifier onlyOwner() {\n\n require(msg.sender == owner);\n\n _;\n\n }\n\n }\n\ncontract Pausable is Ownable {\n\n event Pause();\n\n event Unpause();\n\n\n\n bool public paused = false;\n\n\n\n modifier whenNotPaused() {\n\n require(!paused);\n\n _;\n\n }\n\n\n\n modifier whenPaused() {\n\n require(paused);\n\n _;\n\n }\n\n\n\n function pause() onlyOwner whenNotPaused public {\n\n paused = true;\n\n Pause();\n\n }\n\n\n\n function unpause() onlyOwner whenPaused public {\n\n paused = false;\n\n Unpause();\n\n }\n\n }\n\nlibrary SafeERC20 {\n\n function safeTransfer(ERC20Basic token, address to, uint256 value) internal {\n\n assert(token.transfer(to, value));\n\n }\n\n\n\n function safeTransferFrom(ERC20 token, address from, address to, uint256 value) internal {\n\n assert(token.transferFrom(from, to, value));\n\n }\n\n\n\n function safeApprove(ERC20 token, address spender, uint256 value) internal {\n\n assert(token.approve(spender, value));\n\n }\n\n }\n\nlibrary SafeMath {\n\n\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n\n if (a == 0) {\n\n return 0;\n\n }\n\n uint256 c = a * b;\n\n assert(c / a == b);\n\n return c;\n\n }\n\n\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n\n uint256 c = a / b;\n\n return c;\n\n }\n\n\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n\n assert(b <= a);\n\n return a - b;\n\n }\n\n\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n\n uint256 c = a + b;\n\n assert(c >= a);\n\n return c;\n\n }\n\n }\n\ncontract ERC20Interface {\n\n function totalSupply() public view returns (uint);\n\n function balanceOf(address tokenOwner) public view returns (uint balance);\n\n function allowance(address tokenOwner, address spender) public view returns (uint remaining);\n\n function transfer(address to, uint tokens) public returns (bool success);\n\n function approve(address spender, uint tokens) public returns (bool success);\n\n function transferFrom(address from, address to, uint tokens) public returns (bool success);\n\n\n\n event Transfer(address indexed from, address indexed to, uint tokens);\n\n event Approval(address indexed tokenOwner, address indexed spender, uint tokens);\n\n}\n\ncontract TestTokenFallback is Ownable {\n\n bool public requireFlag = true;\n\n bool public successFlag = true;\n\n\n\n event LogTokenFallback(address indexed msgSender, address indexed from, uint256 amount, bytes data);\n\n event LogReceiveApproval(address indexed msgSender, uint256 amount, address indexed token, bytes data);\n\n\n\n function setRequireFlag(bool _requireFlag) public onlyOwner {\n\n requireFlag = _requireFlag;\n\n }\n\n\n\n function setSuccessFlag(bool _successFlag) public onlyOwner {\n\n successFlag = _successFlag;\n\n }\n\n\n\n function tokenFallback(address from, uint256 amount, bytes data) public returns (bool success) {\n\n // ERC20Interface(token).transferFrom(from, address(this), tokens);\n\n require(requireFlag);\n\n LogTokenFallback(msg.sender, from, amount, data);\n\n return successFlag;\n\n }\n\n\n\n function receiveApproval(address from, uint256 amount, address token, bytes data) public {\n\n require(requireFlag);\n\n ERC20Interface(token).transferFrom(from, address(this), amount);\n\n LogReceiveApproval(msg.sender, amount, token, data);\n\n }\n\n}\n\ncontract BasicToken is ERC20Basic {\n\n using SafeMath for uint256;\n\n\n\n mapping(address => uint256) balances;\n\n\n\n uint256 totalSupply_;\n\n\n\n function totalSupply() public view returns (uint256) {\n\n return totalSupply_;\n\n }\n\n function transfer(address _to, uint256 _value) public returns (bool) {\n\n require(_to != address(0));\n\n require(_value <= balances[msg.sender]);\n\n\n\n balances[msg.sender] = balances[msg.sender].sub(_value);\n\n balances[_to] = balances[_to].add(_value);\n\n Transfer(msg.sender, _to, _value);\n\n return true;\n\n }\n\n\n\n function balanceOf(address _owner) public view returns (uint256 balance) {\n\n return balances[_owner];\n\n }\n\n\n\n}\n\ncontract CanReclaimToken is Ownable {\n\n using SafeERC20 for ERC20Basic;\n\n\n\n function reclaimToken(ERC20Basic token) external onlyOwner {\n\n uint256 balance = token.balanceOf(this);\n\n token.safeTransfer(owner, balance);\n\n }\n\n }\n\ncontract Claimable is Ownable {\n\n address public pendingOwner;\n\n\n\n modifier onlyPendingOwner() {\n\n require(msg.sender == pendingOwner);\n\n _;\n\n }\n\n\n\n function transferOwnership(address newOwner) onlyOwner public {\n\n pendingOwner = newOwner;\n\n }\n\n\n\n function claimOwnership() onlyPendingOwner public {\n\n OwnershipTransferred(owner, pendingOwner);\n\n owner = pendingOwner;\n\n pendingOwner = address(0);\n\n }\n\n }\n\ncontract ERC20 is ERC20Basic {\n\n function allowance(address owner, address spender) public view returns (uint256);\n\n function transferFrom(address from, address to, uint256 value) public returns (bool);\n\n function approve(address spender, uint256 value) public returns (bool);\n\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n}\n\ncontract StandardToken is ERC20, BasicToken {\n\n\n\n mapping (address => mapping (address => uint256)) internal allowed;\n\n\n\n function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {\n\n require(_to != address(0));\n\n require(_value <= balances[_from]);\n\n require(_value <= allowed[_from][msg.sender]);\n\n\n\n balances[_from] = balances[_from].sub(_value);\n\n balances[_to] = balances[_to].add(_value);\n\n allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);\n\n Transfer(_from, _to, _value);\n\n return true;\n\n }\n\n\n\n function approve(address _spender, uint256 _value) public returns (bool) {\n\n allowed[msg.sender][_spender] = _value;\n\n Approval(msg.sender, _spender, _value);\n\n return true;\n\n }\n\n\n\n function allowance(address _owner, address _spender) public view returns (uint256) {\n\n return allowed[_owner][_spender];\n\n }\n\n\n\n function increaseApproval(address _spender, uint _addedValue) public returns (bool) {\n\n allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);\n\n Approval(msg.sender, _spender, allowed[msg.sender][_spender]);\n\n return true;\n\n }\n\n\n\n function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {\n\n uint oldValue = allowed[msg.sender][_spender];\n\n if (_subtractedValue > oldValue) {\n\n allowed[msg.sender][_spender] = 0;\n\n } else {\n\n allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);\n\n }\n\n Approval(msg.sender, _spender, allowed[msg.sender][_spender]);\n\n return true;\n\n }\n\n }\n\ncontract MintableToken is StandardToken, Ownable, Claimable {\n\n event Mint(address indexed to, uint256 amount);\n\n event MintFinished();\n\n\n\n bool public mintingFinished = false;\n\n uint public maxSupply = 400000000 * (10 ** 18);\n\n\n\n\n\n modifier canMint() {\n\n require(!mintingFinished);\n\n _;\n\n }\n\n\n\n function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {\n\n if (maxSupply < totalSupply_.add(_amount) ) {\n\n revert();\n\n }\n\n\n\n totalSupply_ = totalSupply_.add(_amount);\n\n balances[_to] = balances[_to].add(_amount);\n\n Mint(_to, _amount);\n\n Transfer(address(0), _to, _amount);\n\n return true;\n\n }\n\n function finishMinting() onlyOwner canMint public returns (bool) {\n\n mintingFinished = true;\n\n MintFinished();\n\n return true;\n\n }\n\n }\n\ncontract PausableToken is StandardToken, Pausable {\n\n\n\n function transfer(address _to, uint256 _value) public whenNotPaused returns (bool) {\n\n return super.transfer(_to, _value);\n\n }\n\n\n\n function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool) {\n\n return super.transferFrom(_from, _to, _value);\n\n }\n\n\n\n function approve(address _spender, uint256 _value) public whenNotPaused returns (bool) {\n\n return super.approve(_spender, _value);\n\n }\n\n\n\n function increaseApproval(address _spender, uint _addedValue) public whenNotPaused returns (bool success) {\n\n return super.increaseApproval(_spender, _addedValue);\n\n }\n\n\n\n function decreaseApproval(address _spender, uint _subtractedValue) public whenNotPaused returns (bool success) {\n\n return super.decreaseApproval(_spender, _subtractedValue);\n\n }\n\n }\n\ncontract MOOVEToken is StandardToken, PausableToken, MintableToken {\n\n\n\n string public constant name = \"MOOVE CURRENCY\"; \n\n string public constant symbol = \"MOOVE\"; \n\n uint8 public constant decimals = 18; \n\n\n\n uint256 public constant INITIAL_SUPPLY = 0 * (10 ** uint256(decimals));\n\n\n\n function MOOVEToken() public {\n\n totalSupply_ = INITIAL_SUPPLY;\n\n balances[msg.sender] = INITIAL_SUPPLY;\n\n maxSupply = 400000000 * (10 ** uint256(decimals));\n\n\n\n Transfer(0x0, msg.sender, INITIAL_SUPPLY);\n\n }\n\n\n\n function approveAndCall(address spender, uint _value, bytes data) public returns (bool success) {\n\n approve(spender, _value);\n\n ApproveAndCallFallBack(spender).receiveApproval(msg.sender, _value, address(this), data);\n\n return true;\n\n 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0":{"kind":"number","value":599,"string":"599"},"address":{"kind":"string","value":"0xD0eB57ff3eA4Def2b74dc29681fd529D1611880f"},"source_code":{"kind":"string","value":"pragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\ncontract DSAuthEvents {\n\n event LogSetAuthority(address indexed authority);\n\n event LogSetOwner(address indexed owner);\n\n}\n\ncontract DSAuth is DSAuthEvents {\n\n DSAuthority public authority;\n\n address public owner;\n\n\n\n constructor() public {\n\n owner = msg.sender;\n\n emit LogSetOwner(msg.sender);\n\n }\n\n\n\n function setOwner(address owner_) public auth {\n\n owner = owner_;\n\n emit LogSetOwner(owner);\n\n }\n\n\n\n function setAuthority(DSAuthority authority_) public auth {\n\n authority = authority_;\n\n emit LogSetAuthority(address(authority));\n\n }\n\n\n\n modifier auth {\n\n require(isAuthorized(msg.sender, msg.sig));\n\n _;\n\n }\n\n\n\n function isAuthorized(address src, bytes4 sig) internal view returns (bool) {\n\n if (src == address(this)) {\n\n return true;\n\n } else if (src == owner) {\n\n return true;\n\n } else if (authority == DSAuthority(0)) {\n\n return false;\n\n } else {\n\n return authority.canCall(src, address(this), sig);\n\n }\n\n }\n\n}\n\nabstract contract DSAuthority {\n\n function canCall(address src, address dst, bytes4 sig) public virtual view returns (bool);\n\n}\n\nabstract contract DSGuard {\n\n function canCall(address src_, address dst_, bytes4 sig) public view virtual returns (bool);\n\n\n\n function permit(bytes32 src, bytes32 dst, bytes32 sig) public virtual;\n\n\n\n function forbid(bytes32 src, bytes32 dst, bytes32 sig) public virtual;\n\n\n\n function permit(address src, address dst, bytes32 sig) public virtual;\n\n\n\n function forbid(address src, address dst, bytes32 sig) public virtual;\n\n}\n\nabstract contract DSGuardFactory {\n\n function newGuard() public virtual returns (DSGuard guard);\n\n}\n\ncontract DSMath {\n\n function add(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require((z = x + y) >= x);\n\n }\n\n\n\n function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require((z = x - y) <= x);\n\n }\n\n\n\n function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require(y == 0 || (z = x * y) / y == x);\n\n }\n\n\n\n function div(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n return x / y;\n\n }\n\n\n\n function min(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n return x <= y ? x : y;\n\n }\n\n\n\n function max(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n return x >= y ? x : y;\n\n }\n\n\n\n function imin(int256 x, int256 y) internal pure returns (int256 z) {\n\n return x <= y ? x : y;\n\n }\n\n\n\n function imax(int256 x, int256 y) internal pure returns (int256 z) {\n\n return x >= y ? x : y;\n\n }\n\n\n\n uint256 constant WAD = 10**18;\n\n uint256 constant RAY = 10**27;\n\n\n\n function wmul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n z = add(mul(x, y), WAD / 2) / WAD;\n\n }\n\n\n\n function rmul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n z = add(mul(x, y), RAY / 2) / RAY;\n\n }\n\n\n\n function wdiv(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n z = add(mul(x, WAD), y / 2) / y;\n\n }\n\n\n\n function rdiv(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n z = add(mul(x, RAY), y / 2) / y;\n\n }\n\n\n\n // This famous algorithm is called \"exponentiation by squaring\"\n\n // and calculates x^n with x as fixed-point and n as regular unsigned.\n\n //\n\n // It's O(log n), instead of O(n) for naive repeated multiplication.\n\n //\n\n // These facts are why it works:\n\n //\n\n // If n is even, then x^n = (x^2)^(n/2).\n\n // If n is odd, then x^n = x * x^(n-1),\n\n // and applying the equation for even x gives\n\n // x^n = x * (x^2)^((n-1) / 2).\n\n //\n\n // Also, EVM division is flooring and\n\n // floor[(n-1) / 2] = floor[n / 2].\n\n //\n\n function rpow(uint256 x, uint256 n) internal pure returns (uint256 z) {\n\n z = n % 2 != 0 ? x : RAY;\n\n\n\n for (n /= 2; n != 0; n /= 2) {\n\n x = rmul(x, x);\n\n\n\n if (n % 2 != 0) {\n\n z = rmul(z, x);\n\n }\n\n }\n\n }\n\n}\n\ncontract DSNote {\n\n event LogNote(\n\n bytes4 indexed sig,\n\n address indexed guy,\n\n bytes32 indexed foo,\n\n bytes32 indexed bar,\n\n uint256 wad,\n\n bytes fax\n\n ) anonymous;\n\n\n\n modifier note {\n\n bytes32 foo;\n\n bytes32 bar;\n\n\n\n assembly {\n\n foo := calldataload(4)\n\n bar := calldataload(36)\n\n }\n\n\n\n emit LogNote(msg.sig, msg.sender, foo, bar, msg.value, msg.data);\n\n\n\n _;\n\n }\n\n}\n\nabstract contract DSProxy is DSAuth, DSNote {\n\n DSProxyCache public cache; // global cache for contracts\n\n\n\n constructor(address _cacheAddr) public {\n\n require(setCache(_cacheAddr));\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external payable {}\n\n\n\n // use the proxy to execute calldata _data on contract _code\n\n // function execute(bytes memory _code, bytes memory _data)\n\n // public\n\n // payable\n\n // virtual\n\n // returns (address target, bytes32 response);\n\n\n\n function execute(address _target, bytes memory _data)\n\n public\n\n payable\n\n virtual\n\n returns (bytes32 response);\n\n\n\n //set new cache\n\n function setCache(address _cacheAddr) public virtual payable returns (bool);\n\n}\n\ncontract DSProxyCache {\n\n mapping(bytes32 => address) cache;\n\n\n\n function read(bytes memory _code) public view returns (address) {\n\n bytes32 hash = keccak256(_code);\n\n return cache[hash];\n\n }\n\n\n\n function write(bytes memory _code) public returns (address target) {\n\n assembly {\n\n target := create(0, add(_code, 0x20), mload(_code))\n\n switch iszero(extcodesize(target))\n\n case 1 {\n\n // throw if contract failed to deploy\n\n revert(0, 0)\n\n }\n\n }\n\n bytes32 hash = keccak256(_code);\n\n cache[hash] = target;\n\n }\n\n}\n\nabstract contract DSProxyFactoryInterface {\n\n function build(address owner) public virtual returns (DSProxy proxy);\n\n}\n\ncontract AaveHelper is DSMath {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n\taddress public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant AAVE_LENDING_POOL_ADDRESSES = 0x24a42fD28C976A61Df5D00D0599C34c4f90748c8;\n\n uint public constant NINETY_NINE_PERCENT_WEI = 990000000000000000;\n\n uint16 public constant AAVE_REFERRAL_CODE = 64;\n\n\n\n /// @param _collateralAddress underlying token address\n\n /// @param _user users address\n\n\tfunction getMaxCollateral(address _collateralAddress, address _user) public view returns (uint256) {\n\n address lendingPoolAddressDataProvider = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolDataProvider();\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n uint256 pow10 = 10 ** (18 - _getDecimals(_collateralAddress));\n\n\n\n // fetch all needed data\n\n (,uint256 totalCollateralETH, uint256 totalBorrowsETH,,uint256 currentLTV,,,) = ILendingPool(lendingPoolAddressDataProvider).calculateUserGlobalData(_user);\n\n (,uint256 tokenLTV,,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_collateralAddress);\n\n uint256 collateralPrice = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_collateralAddress);\n\n uint256 userTokenBalance = ILendingPool(lendingPoolCoreAddress).getUserUnderlyingAssetBalance(_collateralAddress, _user);\n\n uint256 userTokenBalanceEth = wmul(userTokenBalance * pow10, collateralPrice);\n\n\n\n\t\t// if borrow is 0, return whole user balance\n\n if (totalBorrowsETH == 0) {\n\n \treturn userTokenBalance;\n\n }\n\n\n\n uint256 maxCollateralEth = div(sub(mul(currentLTV, totalCollateralETH), mul(totalBorrowsETH, 100)), currentLTV);\n\n\t\t/// @dev final amount can't be higher than users token balance\n\n maxCollateralEth = maxCollateralEth > userTokenBalanceEth ? userTokenBalanceEth : maxCollateralEth;\n\n\n\n // might happen due to wmul precision\n\n if (maxCollateralEth >= totalCollateralETH) {\n\n \treturn wdiv(totalCollateralETH, collateralPrice) / pow10;\n\n }\n\n\n\n // get sum of all other reserves multiplied with their liquidation thresholds by reversing formula\n\n uint256 a = sub(wmul(currentLTV, totalCollateralETH), wmul(tokenLTV, userTokenBalanceEth));\n\n // add new collateral amount multiplied by its threshold, and then divide with new total collateral\n\n uint256 newLiquidationThreshold = wdiv(add(a, wmul(sub(userTokenBalanceEth, maxCollateralEth), tokenLTV)), sub(totalCollateralETH, maxCollateralEth));\n\n\n\n // if new threshold is lower than first one, calculate new max collateral with newLiquidationThreshold\n\n if (newLiquidationThreshold < currentLTV) {\n\n \tmaxCollateralEth = div(sub(mul(newLiquidationThreshold, totalCollateralETH), mul(totalBorrowsETH, 100)), newLiquidationThreshold);\n\n \tmaxCollateralEth = maxCollateralEth > userTokenBalanceEth ? userTokenBalanceEth : maxCollateralEth;\n\n }\n\n\n\n\t\treturn wmul(wdiv(maxCollateralEth, collateralPrice) / pow10, NINETY_NINE_PERCENT_WEI);\n\n\t}\n\n\n\n\t/// @param _borrowAddress underlying token address\n\n\t/// @param _user users address\n\n\tfunction getMaxBorrow(address _borrowAddress, address _user) public view returns (uint256) {\n\n\t\taddress lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\t\taddress priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n\t\t(,,,,uint256 availableBorrowsETH,,,) = ILendingPool(lendingPoolAddress).getUserAccountData(_user);\n\n\n\n\t\tuint256 borrowPrice = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_borrowAddress);\n\n\n\n\t\treturn wmul(wdiv(availableBorrowsETH, borrowPrice) / (10 ** (18 - _getDecimals(_borrowAddress))), NINETY_NINE_PERCENT_WEI);\n\n\t}\n\n\n\n function getMaxBoost(address _borrowAddress, address _collateralAddress, address _user) public view returns (uint256) {\n\n address lendingPoolAddressDataProvider = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolDataProvider();\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n (,uint256 totalCollateralETH, uint256 totalBorrowsETH,,uint256 currentLTV,,,) = ILendingPool(lendingPoolAddressDataProvider).calculateUserGlobalData(_user);\n\n (,uint256 tokenLTV,,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_collateralAddress);\n\n totalCollateralETH = div(mul(totalCollateralETH, currentLTV), 100);\n\n\n\n uint256 availableBorrowsETH = wmul(mul(div(sub(totalCollateralETH, totalBorrowsETH), sub(100, tokenLTV)), 100), NINETY_NINE_PERCENT_WEI);\n\n uint256 borrowPrice = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_borrowAddress);\n\n\n\n return wdiv(availableBorrowsETH, borrowPrice) / (10 ** (18 - _getDecimals(_borrowAddress)));\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _tokenAddr token addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getFee(uint _amount, address _user, uint _gasCost, address _tokenAddr) internal returns (uint feeAmount) {\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(_user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(_user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n uint256 price = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddr);\n\n\n\n _gasCost = wdiv(_gasCost, price) / (10 ** (18 - _getDecimals(_tokenAddr)));\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (_tokenAddr == ETH_ADDR) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Calculates the gas cost for transaction\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _tokenAddr token addr. of token we are getting for the fee\n\n /// @return gasCost The amount we took for the gas cost\n\n function getGasCost(uint _amount, address _user, uint _gasCost, address _tokenAddr) internal returns (uint gasCost) {\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n if (_gasCost != 0) {\n\n uint256 price = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddr);\n\n _gasCost = wmul(_gasCost, price);\n\n\n\n gasCost = _gasCost;\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (gasCost > (_amount / 5)) {\n\n gasCost = _amount / 5;\n\n }\n\n\n\n if (_tokenAddr == ETH_ADDR) {\n\n WALLET_ADDR.transfer(gasCost);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(WALLET_ADDR, gasCost);\n\n }\n\n }\n\n\n\n\n\n /// @notice Returns the owner of the DSProxy that called the contract\n\n function getUserAddress() internal view returns (address) {\n\n DSProxy proxy = DSProxy(payable(address(this)));\n\n\n\n return proxy.owner();\n\n }\n\n\n\n /// @notice Approves token contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _caller Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _caller) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_caller, uint256(-1));\n\n }\n\n }\n\n\n\n /// @notice Send specific amount from contract to specific user\n\n /// @param _token Token we are trying to send\n\n /// @param _user User that should receive funds\n\n /// @param _amount Amount that should be sent\n\n function sendContractBalance(address _token, address _user, uint _amount) public {\n\n if (_amount == 0) return;\n\n\n\n if (_token == ETH_ADDR) {\n\n payable(_user).transfer(_amount);\n\n } else {\n\n ERC20(_token).safeTransfer(_user, _amount);\n\n }\n\n }\n\n\n\n function sendFullContractBalance(address _token, address _user) public {\n\n if (_token == ETH_ADDR) {\n\n sendContractBalance(_token, _user, address(this).balance);\n\n } else {\n\n sendContractBalance(_token, _user, ERC20(_token).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function _getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == ETH_ADDR) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n}\n\ncontract AaveSafetyRatio is AaveHelper {\n\n\n\n function getSafetyRatio(address _user) public view returns(uint256) {\n\n address lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n (,,uint256 totalBorrowsETH,,uint256 availableBorrowsETH,,,) = ILendingPool(lendingPoolAddress).getUserAccountData(_user);\n\n\n\n if (totalBorrowsETH == 0) return uint256(0);\n\n\n\n return wdiv(add(totalBorrowsETH, availableBorrowsETH), totalBorrowsETH);\n\n }\n\n}\n\ncontract AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public owner;\n\n address public admin;\n\n\n\n modifier onlyOwner() {\n\n require(owner == msg.sender);\n\n _;\n\n }\n\n\n\n constructor() public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Admin is set by owner first time, after that admin is super role and has permission to change owner\n\n /// @param _admin Address of multisig that becomes admin\n\n function setAdminByOwner(address _admin) public {\n\n require(msg.sender == owner);\n\n require(admin == address(0));\n\n\n\n admin = _admin;\n\n }\n\n\n\n /// @notice Admin is able to set new admin\n\n /// @param _admin Address of multisig that becomes new admin\n\n function setAdminByAdmin(address _admin) public {\n\n require(msg.sender == admin);\n\n\n\n admin = _admin;\n\n }\n\n\n\n /// @notice Admin is able to change owner\n\n /// @param _owner Address of new owner\n\n function setOwnerByAdmin(address _owner) public {\n\n require(msg.sender == admin);\n\n\n\n owner = _owner;\n\n }\n\n\n\n /// @notice Destroy the contract\n\n function kill() public onlyOwner {\n\n selfdestruct(payable(owner));\n\n }\n\n\n\n /// @notice withdraw stuck funds\n\n function withdrawStuckFunds(address _token, uint _amount) public onlyOwner {\n\n if (_token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {\n\n payable(owner).transfer(_amount);\n\n } else {\n\n ERC20(_token).safeTransfer(owner, _amount);\n\n }\n\n }\n\n}\n\ncontract Auth is AdminAuth {\n\n\n\n\tbool public ALL_AUTHORIZED = false;\n\n\n\n\tmapping(address => bool) public authorized;\n\n\n\n\tmodifier onlyAuthorized() {\n\n require(ALL_AUTHORIZED || authorized[msg.sender]);\n\n _;\n\n }\n\n\n\n\tconstructor() public {\n\n\t\tauthorized[msg.sender] = true;\n\n\t}\n\n\n\n\tfunction setAuthorized(address _user, bool _approved) public onlyOwner {\n\n\t\tauthorized[_user] = _approved;\n\n\t}\n\n\n\n\tfunction setAllAuthorized(bool _authorized) public onlyOwner {\n\n\t\tALL_AUTHORIZED = _authorized;\n\n\t}\n\n}\n\ncontract ProxyPermission {\n\n address public constant FACTORY_ADDRESS = 0x5a15566417e6C1c9546523066500bDDBc53F88C7;\n\n\n\n /// @notice Called in the context of DSProxy to authorize an address\n\n /// @param _contractAddr Address which will be authorized\n\n function givePermission(address _contractAddr) public {\n\n address currAuthority = address(DSAuth(address(this)).authority());\n\n DSGuard guard = DSGuard(currAuthority);\n\n\n\n if (currAuthority == address(0)) {\n\n guard = DSGuardFactory(FACTORY_ADDRESS).newGuard();\n\n DSAuth(address(this)).setAuthority(DSAuthority(address(guard)));\n\n }\n\n\n\n guard.permit(_contractAddr, address(this), bytes4(keccak256(\"execute(address,bytes)\")));\n\n }\n\n\n\n /// @notice Called in the context of DSProxy to remove authority of an address\n\n /// @param _contractAddr Auth address which will be removed from authority list\n\n function removePermission(address _contractAddr) public {\n\n address currAuthority = address(DSAuth(address(this)).authority());\n\n \n\n // if there is no authority, that means that contract doesn't have permission\n\n if (currAuthority == address(0)) {\n\n return;\n\n }\n\n\n\n DSGuard guard = DSGuard(currAuthority);\n\n guard.forbid(_contractAddr, address(this), bytes4(keccak256(\"execute(address,bytes)\")));\n\n }\n\n\n\n function proxyOwner() internal returns(address) {\n\n return DSAuth(address(this)).owner();\n\n } \n\n}\n\ncontract CompoundMonitorProxy is AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint public CHANGE_PERIOD;\n\n address public monitor;\n\n address public newMonitor;\n\n address public lastMonitor;\n\n uint public changeRequestedTimestamp;\n\n\n\n mapping(address => bool) public allowed;\n\n\n\n event MonitorChangeInitiated(address oldMonitor, address newMonitor);\n\n event MonitorChangeCanceled();\n\n event MonitorChangeFinished(address monitor);\n\n event MonitorChangeReverted(address monitor);\n\n\n\n // if someone who is allowed become malicious, owner can't be changed\n\n modifier onlyAllowed() {\n\n require(allowed[msg.sender] || msg.sender == owner);\n\n _;\n\n }\n\n\n\n modifier onlyMonitor() {\n\n require (msg.sender == monitor);\n\n _;\n\n }\n\n\n\n constructor(uint _changePeriod) public {\n\n CHANGE_PERIOD = _changePeriod * 1 days;\n\n }\n\n\n\n /// @notice Only monitor contract is able to call execute on users proxy\n\n /// @param _owner Address of cdp owner (users DSProxy address)\n\n /// @param _compoundSaverProxy Address of CompoundSaverProxy\n\n /// @param _data Data to send to CompoundSaverProxy\n\n function callExecute(address _owner, address _compoundSaverProxy, bytes memory _data) public payable onlyMonitor {\n\n // execute reverts if calling specific method fails\n\n DSProxyInterface(_owner).execute{value: msg.value}(_compoundSaverProxy, _data);\n\n\n\n // return if anything left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Allowed users are able to set Monitor contract without any waiting period first time\n\n /// @param _monitor Address of Monitor contract\n\n function setMonitor(address _monitor) public onlyAllowed {\n\n require(monitor == address(0));\n\n monitor = _monitor;\n\n }\n\n\n\n /// @notice Allowed users are able to start procedure for changing monitor\n\n /// @dev after CHANGE_PERIOD needs to call confirmNewMonitor to actually make a change\n\n /// @param _newMonitor address of new monitor\n\n function changeMonitor(address _newMonitor) public onlyAllowed {\n\n require(changeRequestedTimestamp == 0);\n\n\n\n changeRequestedTimestamp = now;\n\n lastMonitor = monitor;\n\n newMonitor = _newMonitor;\n\n\n\n emit MonitorChangeInitiated(lastMonitor, newMonitor);\n\n }\n\n\n\n /// @notice At any point allowed users are able to cancel monitor change\n\n function cancelMonitorChange() public onlyAllowed {\n\n require(changeRequestedTimestamp > 0);\n\n\n\n changeRequestedTimestamp = 0;\n\n newMonitor = address(0);\n\n\n\n emit MonitorChangeCanceled();\n\n }\n\n\n\n /// @notice Anyone is able to confirm new monitor after CHANGE_PERIOD if process is started\n\n function confirmNewMonitor() public onlyAllowed {\n\n require((changeRequestedTimestamp + CHANGE_PERIOD) < now);\n\n require(changeRequestedTimestamp != 0);\n\n require(newMonitor != address(0));\n\n\n\n monitor = newMonitor;\n\n newMonitor = address(0);\n\n changeRequestedTimestamp = 0;\n\n\n\n emit MonitorChangeFinished(monitor);\n\n }\n\n\n\n /// @notice Its possible to revert monitor to last used monitor\n\n function revertMonitor() public onlyAllowed {\n\n require(lastMonitor != address(0));\n\n\n\n monitor = lastMonitor;\n\n\n\n emit MonitorChangeReverted(monitor);\n\n }\n\n\n\n\n\n /// @notice Allowed users are able to add new allowed user\n\n /// @param _user Address of user that will be allowed\n\n function addAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = true;\n\n }\n\n\n\n /// @notice Allowed users are able to remove allowed user\n\n /// @dev owner is always allowed even if someone tries to remove it from allowed mapping\n\n /// @param _user Address of allowed user\n\n function removeAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = false;\n\n }\n\n\n\n function setChangePeriod(uint _periodInDays) public onlyAllowed {\n\n require(_periodInDays * 1 days > CHANGE_PERIOD);\n\n\n\n CHANGE_PERIOD = _periodInDays * 1 days;\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n /// @param _token address of token to withdraw balance\n\n function withdrawToken(address _token) public onlyOwner {\n\n uint balance = ERC20(_token).balanceOf(address(this));\n\n ERC20(_token).safeTransfer(msg.sender, balance);\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n function withdrawEth() public onlyOwner {\n\n uint balance = address(this).balance;\n\n msg.sender.transfer(balance);\n\n }\n\n}\n\ncontract CompoundSubscriptions is AdminAuth {\n\n\n\n struct CompoundHolder {\n\n address user;\n\n uint128 minRatio;\n\n uint128 maxRatio;\n\n uint128 optimalRatioBoost;\n\n uint128 optimalRatioRepay;\n\n bool boostEnabled;\n\n }\n\n\n\n struct SubPosition {\n\n uint arrPos;\n\n bool subscribed;\n\n }\n\n\n\n CompoundHolder[] public subscribers;\n\n mapping (address => SubPosition) public subscribersPos;\n\n\n\n uint public changeIndex;\n\n\n\n event Subscribed(address indexed user);\n\n event Unsubscribed(address indexed user);\n\n event Updated(address indexed user);\n\n event ParamUpdates(address indexed user, uint128, uint128, uint128, uint128, bool);\n\n\n\n /// @dev Called by the DSProxy contract which owns the Compound position\n\n /// @notice Adds the users Compound poistion in the list of subscriptions so it can be monitored\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalBoost Ratio amount which boost should target\n\n /// @param _optimalRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) external {\n\n\n\n // if boost is not enabled, set max ratio to max uint\n\n uint128 localMaxRatio = _boostEnabled ? _maxRatio : uint128(-1);\n\n require(checkParams(_minRatio, localMaxRatio), \"Must be correct params\");\n\n\n\n SubPosition storage subInfo = subscribersPos[msg.sender];\n\n\n\n CompoundHolder memory subscription = CompoundHolder({\n\n minRatio: _minRatio,\n\n maxRatio: localMaxRatio,\n\n optimalRatioBoost: _optimalBoost,\n\n optimalRatioRepay: _optimalRepay,\n\n user: msg.sender,\n\n boostEnabled: _boostEnabled\n\n });\n\n\n\n changeIndex++;\n\n\n\n if (subInfo.subscribed) {\n\n subscribers[subInfo.arrPos] = subscription;\n\n\n\n emit Updated(msg.sender);\n\n emit ParamUpdates(msg.sender, _minRatio, localMaxRatio, _optimalBoost, _optimalRepay, _boostEnabled);\n\n } else {\n\n subscribers.push(subscription);\n\n\n\n subInfo.arrPos = subscribers.length - 1;\n\n subInfo.subscribed = true;\n\n\n\n emit Subscribed(msg.sender);\n\n }\n\n }\n\n\n\n /// @notice Called by the users DSProxy\n\n /// @dev Owner who subscribed cancels his subscription\n\n function unsubscribe() external {\n\n _unsubscribe(msg.sender);\n\n }\n\n\n\n /// @dev Checks limit if minRatio is bigger than max\n\n /// @param _minRatio Minimum ratio, bellow which repay can be triggered\n\n /// @param _maxRatio Maximum ratio, over which boost can be triggered\n\n /// @return Returns bool if the params are correct\n\n function checkParams(uint128 _minRatio, uint128 _maxRatio) internal pure returns (bool) {\n\n\n\n if (_minRatio > _maxRatio) {\n\n return false;\n\n }\n\n\n\n return true;\n\n }\n\n\n\n /// @dev Internal method to remove a subscriber from the list\n\n /// @param _user The actual address that owns the Compound position\n\n function _unsubscribe(address _user) internal {\n\n require(subscribers.length > 0, \"Must have subscribers in the list\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n require(subInfo.subscribed, \"Must first be subscribed\");\n\n\n\n address lastOwner = subscribers[subscribers.length - 1].user;\n\n\n\n SubPosition storage subInfo2 = subscribersPos[lastOwner];\n\n subInfo2.arrPos = subInfo.arrPos;\n\n\n\n subscribers[subInfo.arrPos] = subscribers[subscribers.length - 1];\n\n subscribers.pop(); // remove last element and reduce arr length\n\n\n\n changeIndex++;\n\n subInfo.subscribed = false;\n\n subInfo.arrPos = 0;\n\n\n\n emit Unsubscribed(msg.sender);\n\n }\n\n\n\n /// @dev Checks if the user is subscribed\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return If the user is subscribed\n\n function isSubscribed(address _user) public view returns (bool) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subInfo.subscribed;\n\n }\n\n\n\n /// @dev Returns subscribtion information about a user\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return Subscription information about the user if exists\n\n function getHolder(address _user) public view returns (CompoundHolder memory) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subscribers[subInfo.arrPos];\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n /// @return List of all subscribers\n\n function getSubscribers() public view returns (CompoundHolder[] memory) {\n\n return subscribers;\n\n }\n\n\n\n /// @notice Helper method for the frontend, returns all the subscribed CDPs paginated\n\n /// @param _page What page of subscribers you want\n\n /// @param _perPage Number of entries per page\n\n /// @return List of all subscribers for that page\n\n function getSubscribersByPage(uint _page, uint _perPage) public view returns (CompoundHolder[] memory) {\n\n CompoundHolder[] memory holders = new CompoundHolder[](_perPage);\n\n\n\n uint start = _page * _perPage;\n\n uint end = start + _perPage;\n\n\n\n end = (end > holders.length) ? holders.length : end;\n\n\n\n uint count = 0;\n\n for (uint i = start; i < end; i++) {\n\n holders[count] = subscribers[i];\n\n count++;\n\n }\n\n\n\n return holders;\n\n }\n\n\n\n ////////////// ADMIN METHODS ///////////////////\n\n\n\n /// @notice Admin function to unsubscribe a CDP\n\n /// @param _user The actual address that owns the Compound position\n\n function unsubscribeByAdmin(address _user) public onlyOwner {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n if (subInfo.subscribed) {\n\n _unsubscribe(_user);\n\n }\n\n }\n\n}\n\ncontract CompoundSubscriptionsProxy is ProxyPermission {\n\n\n\n address public constant COMPOUND_SUBSCRIPTION_ADDRESS = 0x52015EFFD577E08f498a0CCc11905925D58D6207;\n\n address public constant COMPOUND_MONITOR_PROXY = 0xB1cF8DE8e791E4Ed1Bd86c03E2fc1f14389Cb10a;\n\n\n\n /// @notice Calls subscription contract and creates a DSGuard if non existent\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n givePermission(COMPOUND_MONITOR_PROXY);\n\n ICompoundSubscription(COMPOUND_SUBSCRIPTION_ADDRESS).subscribe(\n\n _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls subscription contract and updated existing parameters\n\n /// @dev If subscription is non existent this will create one\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function update(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n ICompoundSubscription(COMPOUND_SUBSCRIPTION_ADDRESS).subscribe(_minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls the subscription contract to unsubscribe the caller\n\n function unsubscribe() public {\n\n removePermission(COMPOUND_MONITOR_PROXY);\n\n ICompoundSubscription(COMPOUND_SUBSCRIPTION_ADDRESS).unsubscribe();\n\n }\n\n}\n\ncontract CompoundCreateTaker is ProxyPermission {\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n struct CreateInfo {\n\n address cCollAddress;\n\n address cBorrowAddress;\n\n uint depositAmount;\n\n }\n\n\n\n /// @notice Main function which will take a FL and open a leverage position\n\n /// @dev Call through DSProxy, if _exchangeData.destAddr is a token approve DSProxy\n\n /// @param _createInfo [cCollAddress, cBorrowAddress, depositAmount]\n\n /// @param _exchangeData Exchange data struct\n\n function openLeveragedLoan(\n\n CreateInfo memory _createInfo,\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n address payable _compReceiver\n\n ) public payable {\n\n uint loanAmount = _exchangeData.srcAmount;\n\n\n\n // Pull tokens from user\n\n if (_exchangeData.destAddr != ETH_ADDRESS) {\n\n ERC20(_exchangeData.destAddr).safeTransferFrom(msg.sender, address(this), _createInfo.depositAmount);\n\n } else {\n\n require(msg.value >= _createInfo.depositAmount, \"Must send correct amount of eth\");\n\n }\n\n\n\n // Send tokens to FL receiver\n\n sendDeposit(_compReceiver, _exchangeData.destAddr);\n\n\n\n // Pack the struct data\n\n (uint[4] memory numData, address[6] memory cAddresses, bytes memory callData)\n\n = _packData(_createInfo, _exchangeData);\n\n bytes memory paramsData = abi.encode(numData, cAddresses, callData, address(this));\n\n\n\n givePermission(_compReceiver);\n\n\n\n lendingPool.flashLoan(_compReceiver, _exchangeData.srcAddr, loanAmount, paramsData);\n\n\n\n removePermission(_compReceiver);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundLeveragedLoan\",\n\n abi.encode(_exchangeData.srcAddr, _exchangeData.destAddr, _exchangeData.srcAmount, _exchangeData.destAmount));\n\n }\n\n\n\n function sendDeposit(address payable _compoundReceiver, address _token) internal {\n\n if (_token != ETH_ADDRESS) {\n\n ERC20(_token).safeTransfer(_compoundReceiver, ERC20(_token).balanceOf(address(this)));\n\n }\n\n\n\n _compoundReceiver.transfer(address(this).balance);\n\n }\n\n\n\n function _packData(\n\n CreateInfo memory _createInfo,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[4] memory numData, address[6] memory cAddresses, bytes memory callData) {\n\n\n\n numData = [\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n cAddresses = [\n\n _createInfo.cCollAddress,\n\n _createInfo.cBorrowAddress,\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n}\n\ncontract CarefulMath {\n\n\n\n /**\n\n * @dev Possible error codes that we can return\n\n */\n\n enum MathError {\n\n NO_ERROR,\n\n DIVISION_BY_ZERO,\n\n INTEGER_OVERFLOW,\n\n INTEGER_UNDERFLOW\n\n }\n\n\n\n /**\n\n * @dev Multiplies two numbers, returns an error on overflow.\n\n */\n\n function mulUInt(uint a, uint b) internal pure returns (MathError, uint) {\n\n if (a == 0) {\n\n return (MathError.NO_ERROR, 0);\n\n }\n\n\n\n uint c = a * b;\n\n\n\n if (c / a != b) {\n\n return (MathError.INTEGER_OVERFLOW, 0);\n\n } else {\n\n return (MathError.NO_ERROR, c);\n\n }\n\n }\n\n\n\n /**\n\n * @dev Integer division of two numbers, truncating the quotient.\n\n */\n\n function divUInt(uint a, uint b) internal pure returns (MathError, uint) {\n\n if (b == 0) {\n\n return (MathError.DIVISION_BY_ZERO, 0);\n\n }\n\n\n\n return (MathError.NO_ERROR, a / b);\n\n }\n\n\n\n /**\n\n * @dev Subtracts two numbers, returns an error on overflow (i.e. if subtrahend is greater than minuend).\n\n */\n\n function subUInt(uint a, uint b) internal pure returns (MathError, uint) {\n\n if (b <= a) {\n\n return (MathError.NO_ERROR, a - b);\n\n } else {\n\n return (MathError.INTEGER_UNDERFLOW, 0);\n\n }\n\n }\n\n\n\n /**\n\n * @dev Adds two numbers, returns an error on overflow.\n\n */\n\n function addUInt(uint a, uint b) internal pure returns (MathError, uint) {\n\n uint c = a + b;\n\n\n\n if (c >= a) {\n\n return (MathError.NO_ERROR, c);\n\n } else {\n\n return (MathError.INTEGER_OVERFLOW, 0);\n\n }\n\n }\n\n\n\n /**\n\n * @dev add a and b and then subtract c\n\n */\n\n function addThenSubUInt(uint a, uint b, uint c) internal pure returns (MathError, uint) {\n\n (MathError err0, uint sum) = addUInt(a, b);\n\n\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, 0);\n\n }\n\n\n\n return subUInt(sum, c);\n\n }\n\n}\n\ncontract Exponential is CarefulMath {\n\n uint constant expScale = 1e18;\n\n uint constant doubleScale = 1e36;\n\n uint constant halfExpScale = expScale/2;\n\n uint constant mantissaOne = expScale;\n\n\n\n struct Exp {\n\n uint mantissa;\n\n }\n\n\n\n struct Double {\n\n uint mantissa;\n\n }\n\n\n\n /**\n\n * @dev Creates an exponential from numerator and denominator values.\n\n * Note: Returns an error if (`num` * 10e18) > MAX_INT,\n\n * or if `denom` is zero.\n\n */\n\n function getExp(uint num, uint denom) pure internal returns (MathError, Exp memory) {\n\n (MathError err0, uint scaledNumerator) = mulUInt(num, expScale);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n\n\n (MathError err1, uint rational) = divUInt(scaledNumerator, denom);\n\n if (err1 != MathError.NO_ERROR) {\n\n return (err1, Exp({mantissa: 0}));\n\n }\n\n\n\n return (MathError.NO_ERROR, Exp({mantissa: rational}));\n\n }\n\n\n\n /**\n\n * @dev Adds two exponentials, returning a new exponential.\n\n */\n\n function addExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {\n\n (MathError error, uint result) = addUInt(a.mantissa, b.mantissa);\n\n\n\n return (error, Exp({mantissa: result}));\n\n }\n\n\n\n /**\n\n * @dev Subtracts two exponentials, returning a new exponential.\n\n */\n\n function subExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {\n\n (MathError error, uint result) = subUInt(a.mantissa, b.mantissa);\n\n\n\n return (error, Exp({mantissa: result}));\n\n }\n\n\n\n /**\n\n * @dev Multiply an Exp by a scalar, returning a new Exp.\n\n */\n\n function mulScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {\n\n (MathError err0, uint scaledMantissa) = mulUInt(a.mantissa, scalar);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n\n\n return (MathError.NO_ERROR, Exp({mantissa: scaledMantissa}));\n\n }\n\n\n\n /**\n\n * @dev Multiply an Exp by a scalar, then truncate to return an unsigned integer.\n\n */\n\n function mulScalarTruncate(Exp memory a, uint scalar) pure internal returns (MathError, uint) {\n\n (MathError err, Exp memory product) = mulScalar(a, scalar);\n\n if (err != MathError.NO_ERROR) {\n\n return (err, 0);\n\n }\n\n\n\n return (MathError.NO_ERROR, truncate(product));\n\n }\n\n\n\n /**\n\n * @dev Multiply an Exp by a scalar, truncate, then add an to an unsigned integer, returning an unsigned integer.\n\n */\n\n function mulScalarTruncateAddUInt(Exp memory a, uint scalar, uint addend) pure internal returns (MathError, uint) {\n\n (MathError err, Exp memory product) = mulScalar(a, scalar);\n\n if (err != MathError.NO_ERROR) {\n\n return (err, 0);\n\n }\n\n\n\n return addUInt(truncate(product), addend);\n\n }\n\n\n\n /**\n\n * @dev Divide an Exp by a scalar, returning a new Exp.\n\n */\n\n function divScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {\n\n (MathError err0, uint descaledMantissa) = divUInt(a.mantissa, scalar);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n\n\n return (MathError.NO_ERROR, Exp({mantissa: descaledMantissa}));\n\n }\n\n\n\n /**\n\n * @dev Divide a scalar by an Exp, returning a new Exp.\n\n */\n\n function divScalarByExp(uint scalar, Exp memory divisor) pure internal returns (MathError, Exp memory) {\n\n /*\n\n We are doing this as:\n\n getExp(mulUInt(expScale, scalar), divisor.mantissa)\n\n\n\n How it works:\n\n Exp = a / b;\n\n Scalar = s;\n\n `s / (a / b)` = `b * s / a` and since for an Exp `a = mantissa, b = expScale`\n\n */\n\n (MathError err0, uint numerator) = mulUInt(expScale, scalar);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n return getExp(numerator, divisor.mantissa);\n\n }\n\n\n\n /**\n\n * @dev Divide a scalar by an Exp, then truncate to return an unsigned integer.\n\n */\n\n function divScalarByExpTruncate(uint scalar, Exp memory divisor) pure internal returns (MathError, uint) {\n\n (MathError err, Exp memory fraction) = divScalarByExp(scalar, divisor);\n\n if (err != MathError.NO_ERROR) {\n\n return (err, 0);\n\n }\n\n\n\n return (MathError.NO_ERROR, truncate(fraction));\n\n }\n\n\n\n /**\n\n * @dev Multiplies two exponentials, returning a new exponential.\n\n */\n\n function mulExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {\n\n\n\n (MathError err0, uint doubleScaledProduct) = mulUInt(a.mantissa, b.mantissa);\n\n if (err0 != MathError.NO_ERROR) {\n\n return (err0, Exp({mantissa: 0}));\n\n }\n\n\n\n // We add half the scale before dividing so that we get rounding instead of truncation.\n\n // See \"Listing 6\" and text above it at https://accu.org/index.php/journals/1717\n\n // Without this change, a result like 6.6...e-19 will be truncated to 0 instead of being rounded to 1e-18.\n\n (MathError err1, uint doubleScaledProductWithHalfScale) = addUInt(halfExpScale, doubleScaledProduct);\n\n if (err1 != MathError.NO_ERROR) {\n\n return (err1, Exp({mantissa: 0}));\n\n }\n\n\n\n (MathError err2, uint product) = divUInt(doubleScaledProductWithHalfScale, expScale);\n\n // The only error `div` can return is MathError.DIVISION_BY_ZERO but we control `expScale` and it is not zero.\n\n assert(err2 == MathError.NO_ERROR);\n\n\n\n return (MathError.NO_ERROR, Exp({mantissa: product}));\n\n }\n\n\n\n /**\n\n * @dev Multiplies two exponentials given their mantissas, returning a new exponential.\n\n */\n\n function mulExp(uint a, uint b) pure internal returns (MathError, Exp memory) {\n\n return mulExp(Exp({mantissa: a}), Exp({mantissa: b}));\n\n }\n\n\n\n /**\n\n * @dev Multiplies three exponentials, returning a new exponential.\n\n */\n\n function mulExp3(Exp memory a, Exp memory b, Exp memory c) pure internal returns (MathError, Exp memory) {\n\n (MathError err, Exp memory ab) = mulExp(a, b);\n\n if (err != MathError.NO_ERROR) {\n\n return (err, ab);\n\n }\n\n return mulExp(ab, c);\n\n }\n\n\n\n /**\n\n * @dev Divides two exponentials, returning a new exponential.\n\n * (a/scale) / (b/scale) = (a/scale) * (scale/b) = a/b,\n\n * which we can scale as an Exp by calling getExp(a.mantissa, b.mantissa)\n\n */\n\n function divExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {\n\n return getExp(a.mantissa, b.mantissa);\n\n }\n\n\n\n /**\n\n * @dev Truncates the given exp to a whole number value.\n\n * For example, truncate(Exp{mantissa: 15 * expScale}) = 15\n\n */\n\n function truncate(Exp memory exp) pure internal returns (uint) {\n\n // Note: We are not using careful math here as we're performing a division that cannot fail\n\n return exp.mantissa / expScale;\n\n }\n\n\n\n /**\n\n * @dev Checks if first Exp is less than second Exp.\n\n */\n\n function lessThanExp(Exp memory left, Exp memory right) pure internal returns (bool) {\n\n return left.mantissa < right.mantissa;\n\n }\n\n\n\n /**\n\n * @dev Checks if left Exp <= right Exp.\n\n */\n\n function lessThanOrEqualExp(Exp memory left, Exp memory right) pure internal returns (bool) {\n\n return left.mantissa <= right.mantissa;\n\n }\n\n\n\n /**\n\n * @dev Checks if left Exp > right Exp.\n\n */\n\n function greaterThanExp(Exp memory left, Exp memory right) pure internal returns (bool) {\n\n return left.mantissa > right.mantissa;\n\n }\n\n\n\n /**\n\n * @dev returns true if Exp is exactly zero\n\n */\n\n function isZeroExp(Exp memory value) pure internal returns (bool) {\n\n return value.mantissa == 0;\n\n }\n\n\n\n function sub_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {\n\n return Exp({mantissa: sub_(a.mantissa, b.mantissa)});\n\n }\n\n\n\n function sub_(Double memory a, Double memory b) pure internal returns (Double memory) {\n\n return Double({mantissa: sub_(a.mantissa, b.mantissa)});\n\n }\n\n\n\n function sub_(uint a, uint b) pure internal returns (uint) {\n\n return sub_(a, b, \"subtraction underflow\");\n\n }\n\n\n\n function sub_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {\n\n require(b <= a, errorMessage);\n\n return a - b;\n\n }\n\n\n\n function mul_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {\n\n return Exp({mantissa: mul_(a.mantissa, b.mantissa) / expScale});\n\n }\n\n\n\n function mul_(Exp memory a, uint b) pure internal returns (Exp memory) {\n\n return Exp({mantissa: mul_(a.mantissa, b)});\n\n }\n\n\n\n function mul_(uint a, Exp memory b) pure internal returns (uint) {\n\n return mul_(a, b.mantissa) / expScale;\n\n }\n\n\n\n function mul_(Double memory a, Double memory b) pure internal returns (Double memory) {\n\n return Double({mantissa: mul_(a.mantissa, b.mantissa) / doubleScale});\n\n }\n\n\n\n function mul_(Double memory a, uint b) pure internal returns (Double memory) {\n\n return Double({mantissa: mul_(a.mantissa, b)});\n\n }\n\n\n\n function mul_(uint a, Double memory b) pure internal returns (uint) {\n\n return mul_(a, b.mantissa) / doubleScale;\n\n }\n\n\n\n function mul_(uint a, uint b) pure internal returns (uint) {\n\n return mul_(a, b, \"multiplication overflow\");\n\n }\n\n\n\n function mul_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {\n\n if (a == 0 || b == 0) {\n\n return 0;\n\n }\n\n uint c = a * b;\n\n require(c / a == b, errorMessage);\n\n return c;\n\n }\n\n\n\n function div_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {\n\n return Exp({mantissa: div_(mul_(a.mantissa, expScale), b.mantissa)});\n\n }\n\n\n\n function div_(Exp memory a, uint b) pure internal returns (Exp memory) {\n\n return Exp({mantissa: div_(a.mantissa, b)});\n\n }\n\n\n\n function div_(uint a, Exp memory b) pure internal returns (uint) {\n\n return div_(mul_(a, expScale), b.mantissa);\n\n }\n\n\n\n function div_(Double memory a, Double memory b) pure internal returns (Double memory) {\n\n return Double({mantissa: div_(mul_(a.mantissa, doubleScale), b.mantissa)});\n\n }\n\n\n\n function div_(Double memory a, uint b) pure internal returns (Double memory) {\n\n return Double({mantissa: div_(a.mantissa, b)});\n\n }\n\n\n\n function div_(uint a, Double memory b) pure internal returns (uint) {\n\n return div_(mul_(a, doubleScale), b.mantissa);\n\n }\n\n\n\n function div_(uint a, uint b) pure internal returns (uint) {\n\n return div_(a, b, \"divide by zero\");\n\n }\n\n\n\n function div_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {\n\n require(b > 0, errorMessage);\n\n return a / b;\n\n }\n\n\n\n function add_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {\n\n return Exp({mantissa: add_(a.mantissa, b.mantissa)});\n\n }\n\n\n\n function add_(Double memory a, Double memory b) pure internal returns (Double memory) {\n\n return Double({mantissa: add_(a.mantissa, b.mantissa)});\n\n }\n\n\n\n function add_(uint a, uint b) pure internal returns (uint) {\n\n return add_(a, b, \"addition overflow\");\n\n }\n\n\n\n function add_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {\n\n uint c = a + b;\n\n require(c >= a, errorMessage);\n\n return c;\n\n }\n\n}\n\ncontract CompoundBorrowProxy {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n function borrow(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) public {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cCollToken;\n\n markets[1] = _cBorrowToken;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n\n\n require(CTokenInterface(_cBorrowToken).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_borrowToken != ETH_ADDR) {\n\n ERC20(_borrowToken).safeTransfer(msg.sender, ERC20(_borrowToken).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n}\n\ncontract CreamSafetyRatio is Exponential, DSMath {\n\n // solhint-disable-next-line const-name-snakecase\n\n ComptrollerInterface public constant comp = ComptrollerInterface(0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258);\n\n\n\n /// @notice Calcualted the ratio of debt / adjusted collateral\n\n /// @param _user Address of the user\n\n function getSafetyRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n\n\n uint sumCollateral = 0;\n\n uint sumBorrow = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in Eth\n\n if (cTokenBalance != 0) {\n\n\n\n (, uint collFactorMantissa) = comp.markets(address(asset));\n\n\n\n Exp memory collateralFactor = Exp({mantissa: collFactorMantissa});\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n\n\n (, Exp memory tokensToEther) = mulExp3(collateralFactor, exchangeRate, oraclePrice);\n\n\n\n (, sumCollateral) = mulScalarTruncateAddUInt(tokensToEther, cTokenBalance, sumCollateral);\n\n }\n\n\n\n // Sum up debt in Eth\n\n if (borrowBalance != 0) {\n\n (, sumBorrow) = mulScalarTruncateAddUInt(oraclePrice, borrowBalance, sumBorrow);\n\n }\n\n }\n\n\n\n if (sumBorrow == 0) return uint(-1);\n\n\n\n uint borrowPowerUsed = (sumBorrow * 10**18) / sumCollateral;\n\n return wdiv(1e18, borrowPowerUsed);\n\n }\n\n}\n\ncontract CreamSaverHelper is DSMath, Exponential {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0xD06527D5e56A3495252A528C4987003b712860eE;\n\n address public constant COMPTROLLER = 0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n /// @notice Helper method to payback the cream debt\n\n /// @dev If amount is bigger it will repay the whole debt and send the extra to the _user\n\n /// @param _amount Amount of tokens we want to repay\n\n /// @param _cBorrowToken Ctoken address we are repaying\n\n /// @param _borrowToken Token address we are repaying\n\n /// @param _user Owner of the cream position we are paying back\n\n function paybackDebt(uint _amount, address _cBorrowToken, address _borrowToken, address payable _user) internal {\n\n uint wholeDebt = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(address(this));\n\n\n\n if (_amount > wholeDebt) {\n\n if (_borrowToken == ETH_ADDRESS) {\n\n _user.transfer((_amount - wholeDebt));\n\n } else {\n\n ERC20(_borrowToken).safeTransfer(_user, (_amount - wholeDebt));\n\n }\n\n\n\n _amount = wholeDebt;\n\n }\n\n\n\n approveCToken(_borrowToken, _cBorrowToken);\n\n\n\n if (_borrowToken == ETH_ADDRESS) {\n\n CEtherInterface(_cBorrowToken).repayBorrow{value: _amount}();\n\n } else {\n\n require(CTokenInterface(_cBorrowToken).repayBorrow(_amount) == 0);\n\n }\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getFee(uint _amount, address _user, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(_user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(_user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint ethTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n\n\n _gasCost = wdiv(_gasCost, ethTokenPrice);\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Calculates the gas cost of transaction and send it to wallet\n\n /// @param _amount Amount that is converted\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getGasCost(uint _amount, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint ethTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n\n\n feeAmount = wdiv(_gasCost, ethTokenPrice);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Enters the market for the collatera and borrow tokens\n\n /// @param _cTokenAddrColl Collateral address we are entering the market in\n\n /// @param _cTokenAddrBorrow Borrow address we are entering the market in\n\n function enterMarket(address _cTokenAddrColl, address _cTokenAddrBorrow) internal {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cTokenAddrColl;\n\n markets[1] = _cTokenAddrBorrow;\n\n\n\n ComptrollerInterface(COMPTROLLER).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveCToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n\n\n /// @notice Returns the owner of the DSProxy that called the contract\n\n function getUserAddress() internal view returns (address) {\n\n DSProxy proxy = DSProxy(uint160(address(this)));\n\n\n\n return proxy.owner();\n\n }\n\n\n\n /// @notice Returns the maximum amount of collateral available to withdraw\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cCollAddress Collateral we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. collateral amount in that token\n\n function getMaxCollateral(address _cCollAddress, address _account) public returns (uint) {\n\n (, uint liquidityInEth, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n uint usersBalance = CTokenInterface(_cCollAddress).balanceOfUnderlying(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n if (liquidityInEth == 0) return usersBalance;\n\n\n\n CTokenInterface(_cCollAddress).accrueInterest();\n\n\n\n if (_cCollAddress == CETH_ADDRESS) {\n\n if (liquidityInEth > usersBalance) return usersBalance;\n\n\n\n return sub(liquidityInEth, (liquidityInEth / 100));\n\n }\n\n\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cCollAddress);\n\n uint liquidityInToken = wdiv(liquidityInEth, ethPrice);\n\n\n\n if (liquidityInToken > usersBalance) return usersBalance;\n\n\n\n return sub(liquidityInToken, (liquidityInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n\n\n /// @notice Returns the maximum amount of borrow amount available\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cBorrowAddress Borrow token we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. borrow amount in that token\n\n function getMaxBorrow(address _cBorrowAddress, address _account) public returns (uint) {\n\n (, uint liquidityInEth, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n CTokenInterface(_cBorrowAddress).accrueInterest();\n\n\n\n if (_cBorrowAddress == CETH_ADDRESS) return sub(liquidityInEth, (liquidityInEth / 100));\n\n\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cBorrowAddress);\n\n uint liquidityInToken = wdiv(liquidityInEth, ethPrice);\n\n\n\n return sub(liquidityInToken, (liquidityInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n}\n\ncontract CreamBorrowProxy {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258;\n\n\n\n function borrow(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) public {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cCollToken;\n\n markets[1] = _cBorrowToken;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n\n\n require(CTokenInterface(_cBorrowToken).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_borrowToken != ETH_ADDR) {\n\n ERC20(_borrowToken).safeTransfer(msg.sender, ERC20(_borrowToken).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n}\n\ncontract AllowanceProxy is AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n // TODO: Real saver exchange address\n\n SaverExchange saverExchange = SaverExchange(0x235abFAd01eb1BDa28Ef94087FBAA63E18074926);\n\n\n\n function callSell(SaverExchangeCore.ExchangeData memory exData) public payable {\n\n pullAndSendTokens(exData.srcAddr, exData.srcAmount);\n\n\n\n saverExchange.sell{value: msg.value}(exData, msg.sender);\n\n }\n\n\n\n function callBuy(SaverExchangeCore.ExchangeData memory exData) public payable {\n\n pullAndSendTokens(exData.srcAddr, exData.srcAmount);\n\n\n\n saverExchange.buy{value: msg.value}(exData, msg.sender);\n\n }\n\n\n\n function pullAndSendTokens(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n require(msg.value >= _amount, \"msg.value smaller than amount\");\n\n } else {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(saverExchange), _amount);\n\n }\n\n }\n\n\n\n function ownerChangeExchange(address payable _newExchange) public onlyOwner {\n\n saverExchange = SaverExchange(_newExchange);\n\n }\n\n}\n\ncontract Prices is DSMath {\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n enum ActionType { SELL, BUY }\n\n\n\n\n\n /// @notice Returns the best estimated price from 2 exchanges\n\n /// @param _amount Amount of source tokens you want to exchange\n\n /// @param _srcToken Address of the source token\n\n /// @param _destToken Address of the destination token\n\n /// @param _type Type of action SELL|BUY\n\n /// @param _wrappers Array of wrapper addresses to compare\n\n /// @return (address, uint) The address of the best exchange and the exchange price\n\n function getBestPrice(\n\n uint256 _amount,\n\n address _srcToken,\n\n address _destToken,\n\n ActionType _type,\n\n address[] memory _wrappers\n\n ) public returns (address, uint256) {\n\n\n\n uint256[] memory rates = new uint256[](_wrappers.length);\n\n for (uint i=0; i<_wrappers.length; i++) {\n\n rates[i] = getExpectedRate(_wrappers[i], _srcToken, _destToken, _amount, _type);\n\n }\n\n\n\n return getBiggestRate(_wrappers, rates);\n\n }\n\n\n\n /// @notice Return the expected rate from the exchange wrapper\n\n /// @dev In case of Oasis/Uniswap handles the different precision tokens\n\n /// @param _wrapper Address of exchange wrapper\n\n /// @param _srcToken From token\n\n /// @param _destToken To token\n\n /// @param _amount Amount to be exchanged\n\n /// @param _type Type of action SELL|BUY\n\n function getExpectedRate(\n\n address _wrapper,\n\n address _srcToken,\n\n address _destToken,\n\n uint256 _amount,\n\n ActionType _type\n\n ) public returns (uint256) {\n\n bool success;\n\n bytes memory result;\n\n\n\n if (_type == ActionType.SELL) {\n\n (success, result) = _wrapper.call(abi.encodeWithSignature(\n\n \"getSellRate(address,address,uint256)\",\n\n _srcToken,\n\n _destToken,\n\n _amount\n\n ));\n\n\n\n } else {\n\n (success, result) = _wrapper.call(abi.encodeWithSignature(\n\n \"getBuyRate(address,address,uint256)\",\n\n _srcToken,\n\n _destToken,\n\n _amount\n\n ));\n\n }\n\n\n\n if (success) {\n\n return sliceUint(result, 0);\n\n }\n\n\n\n return 0;\n\n }\n\n\n\n /// @notice Finds the biggest rate between exchanges, needed for sell rate\n\n /// @param _wrappers Array of wrappers to compare\n\n /// @param _rates Array of rates to compare\n\n function getBiggestRate(\n\n address[] memory _wrappers,\n\n uint256[] memory _rates\n\n ) internal pure returns (address, uint) {\n\n uint256 maxIndex = 0;\n\n\n\n // starting from 0 in case there is only one rate in array\n\n for (uint256 i=0; i<_rates.length; i++) {\n\n if (_rates[i] > _rates[maxIndex]) {\n\n maxIndex = i;\n\n }\n\n }\n\n\n\n return (_wrappers[maxIndex], _rates[maxIndex]);\n\n }\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n function sliceUint(bytes memory bs, uint256 start) internal pure returns (uint256) {\n\n require(bs.length >= start + 32, \"slicing out of range\");\n\n\n\n uint256 x;\n\n assembly {\n\n x := mload(add(bs, add(0x20, start)))\n\n }\n\n\n\n return x;\n\n }\n\n}\n\ncontract SaverExchangeHelper {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n\n\n address payable public constant WALLET_ID = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDRESS = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n address public constant SAVER_EXCHANGE_REGISTRY = 0x25dd3F51e0C3c3Ff164DDC02A8E4D65Bb9cBB12D;\n\n\n\n address public constant ERC20_PROXY_0X = 0x95E6F48254609A6ee006F7D493c8e5fB97094ceF;\n\n address public constant ZRX_ALLOWLIST_ADDR = 0x4BA1f38427b33B8ab7Bb0490200dAE1F1C36823F;\n\n\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n function getBalance(address _tokenAddr) internal view returns (uint balance) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n balance = address(this).balance;\n\n } else {\n\n balance = ERC20(_tokenAddr).balanceOf(address(this));\n\n }\n\n }\n\n\n\n function approve0xProxy(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeApprove(address(ERC20_PROXY_0X), _amount);\n\n }\n\n }\n\n\n\n function sendLeftover(address _srcAddr, address _destAddr, address payable _to) internal {\n\n // send back any leftover ether or tokens\n\n if (address(this).balance > 0) {\n\n _to.transfer(address(this).balance);\n\n }\n\n\n\n if (getBalance(_srcAddr) > 0) {\n\n ERC20(_srcAddr).safeTransfer(_to, getBalance(_srcAddr));\n\n }\n\n\n\n if (getBalance(_destAddr) > 0) {\n\n ERC20(_destAddr).safeTransfer(_to, getBalance(_destAddr));\n\n }\n\n }\n\n\n\n function sliceUint(bytes memory bs, uint256 start) internal pure returns (uint256) {\n\n require(bs.length >= start + 32, \"slicing out of range\");\n\n\n\n uint256 x;\n\n assembly {\n\n x := mload(add(bs, add(0x20, start)))\n\n }\n\n\n\n return x;\n\n }\n\n}\n\ncontract SaverExchangeRegistry is AdminAuth {\n\n\n\n\tmapping(address => bool) private wrappers;\n\n\n\n\tconstructor() public {\n\n\t\twrappers[0x880A845A85F843a5c67DB2061623c6Fc3bB4c511] = true;\n\n\t\twrappers[0x4c9B55f2083629A1F7aDa257ae984E03096eCD25] = true;\n\n\t\twrappers[0x42A9237b872368E1bec4Ca8D26A928D7d39d338C] = true;\n\n\t}\n\n\n\n\tfunction addWrapper(address _wrapper) public onlyOwner {\n\n\t\twrappers[_wrapper] = true;\n\n\t}\n\n\n\n\tfunction removeWrapper(address _wrapper) public onlyOwner {\n\n\t\twrappers[_wrapper] = false;\n\n\t}\n\n\n\n\tfunction isWrapper(address _wrapper) public view returns(bool) {\n\n\t\treturn wrappers[_wrapper];\n\n\t}\n\n}\n\ncontract DFSExchangeData {\n\n\n\n // first is empty to keep the legacy order in place\n\n enum ExchangeType { _, OASIS, KYBER, UNISWAP, ZEROX }\n\n\n\n enum ActionType { SELL, BUY }\n\n\n\n struct OffchainData {\n\n address exchangeAddr;\n\n address allowanceTarget;\n\n uint256 price;\n\n uint256 protocolFee;\n\n bytes callData;\n\n }\n\n\n\n struct ExchangeData {\n\n address srcAddr;\n\n address destAddr;\n\n uint256 srcAmount;\n\n uint256 destAmount;\n\n uint256 minPrice;\n\n uint256 dfsFeeDivider; // service fee divider\n\n address user; // user to check special fee\n\n address wrapper;\n\n bytes wrapperData;\n\n OffchainData offchainData;\n\n }\n\n\n\n function packExchangeData(ExchangeData memory _exData) public pure returns(bytes memory) {\n\n return abi.encode(_exData);\n\n }\n\n\n\n function unpackExchangeData(bytes memory _data) public pure returns(ExchangeData memory _exData) {\n\n _exData = abi.decode(_data, (ExchangeData));\n\n }\n\n}\n\ncontract DFSExchangeHelper {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n\n\n address payable public constant WALLET_ID = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDRESS = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n address public constant SAVER_EXCHANGE_REGISTRY = 0x25dd3F51e0C3c3Ff164DDC02A8E4D65Bb9cBB12D;\n\n\n\n address public constant ZRX_ALLOWLIST_ADDR = 0x4BA1f38427b33B8ab7Bb0490200dAE1F1C36823F;\n\n\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n function getBalance(address _tokenAddr) internal view returns (uint balance) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n balance = address(this).balance;\n\n } else {\n\n balance = ERC20(_tokenAddr).balanceOf(address(this));\n\n }\n\n }\n\n\n\n function sendLeftover(address _srcAddr, address _destAddr, address payable _to) internal {\n\n // send back any leftover ether or tokens\n\n if (address(this).balance > 0) {\n\n _to.transfer(address(this).balance);\n\n }\n\n\n\n if (getBalance(_srcAddr) > 0) {\n\n ERC20(_srcAddr).safeTransfer(_to, getBalance(_srcAddr));\n\n }\n\n\n\n if (getBalance(_destAddr) > 0) {\n\n ERC20(_destAddr).safeTransfer(_to, getBalance(_destAddr));\n\n }\n\n }\n\n\n\n /// @notice Takes a feePercentage and sends it to wallet\n\n /// @param _amount Dai amount of the whole trade\n\n /// @param _user Address of the user\n\n /// @param _token Address of the token\n\n /// @param _dfsFeeDivider Dfs fee divider\n\n /// @return feeAmount Amount in Dai owner earned on the fee\n\n function getFee(uint256 _amount, address _user, address _token, uint256 _dfsFeeDivider) internal returns (uint256 feeAmount) {\n\n if (_dfsFeeDivider != 0 && Discount(DISCOUNT_ADDRESS).isCustomFeeSet(_user)) {\n\n _dfsFeeDivider = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(_user);\n\n }\n\n\n\n if (_dfsFeeDivider == 0) {\n\n feeAmount = 0;\n\n } else {\n\n feeAmount = _amount / _dfsFeeDivider;\n\n\n\n // fee can't go over 10% of the whole amount\n\n if (feeAmount > (_amount / 10)) {\n\n feeAmount = _amount / 10;\n\n }\n\n\n\n if (_token == KYBER_ETH_ADDRESS) {\n\n WALLET_ID.transfer(feeAmount);\n\n } else {\n\n ERC20(_token).safeTransfer(WALLET_ID, feeAmount);\n\n }\n\n }\n\n }\n\n\n\n function sliceUint(bytes memory bs, uint256 start) internal pure returns (uint256) {\n\n require(bs.length >= start + 32, \"slicing out of range\");\n\n\n\n uint256 x;\n\n assembly {\n\n x := mload(add(bs, add(0x20, start)))\n\n }\n\n\n\n return x;\n\n }\n\n}\n\ncontract DFSPrices is DSMath {\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n enum ActionType { SELL, BUY }\n\n\n\n\n\n /// @notice Returns the best estimated price from 2 exchanges\n\n /// @param _amount Amount of source tokens you want to exchange\n\n /// @param _srcToken Address of the source token\n\n /// @param _destToken Address of the destination token\n\n /// @param _type Type of action SELL|BUY\n\n /// @param _wrappers Array of wrapper addresses to compare\n\n /// @return (address, uint) The address of the best exchange and the exchange price\n\n function getBestPrice(\n\n uint256 _amount,\n\n address _srcToken,\n\n address _destToken,\n\n ActionType _type,\n\n address[] memory _wrappers,\n\n bytes[] memory _additionalData\n\n ) public returns (address, uint256) {\n\n\n\n uint256[] memory rates = new uint256[](_wrappers.length);\n\n for (uint i=0; i<_wrappers.length; i++) {\n\n rates[i] = getExpectedRate(_wrappers[i], _srcToken, _destToken, _amount, _type, _additionalData[i]);\n\n }\n\n\n\n return getBiggestRate(_wrappers, rates);\n\n }\n\n\n\n /// @notice Return the expected rate from the exchange wrapper\n\n /// @dev In case of Oasis/Uniswap handles the different precision tokens\n\n /// @param _wrapper Address of exchange wrapper\n\n /// @param _srcToken From token\n\n /// @param _destToken To token\n\n /// @param _amount Amount to be exchanged\n\n /// @param _type Type of action SELL|BUY\n\n function getExpectedRate(\n\n address _wrapper,\n\n address _srcToken,\n\n address _destToken,\n\n uint256 _amount,\n\n ActionType _type,\n\n bytes memory _additionalData\n\n ) public returns (uint256) {\n\n bool success;\n\n bytes memory result;\n\n\n\n if (_type == ActionType.SELL) {\n\n (success, result) = _wrapper.call(abi.encodeWithSignature(\n\n \"getSellRate(address,address,uint256,bytes)\",\n\n _srcToken,\n\n _destToken,\n\n _amount,\n\n _additionalData\n\n ));\n\n\n\n } else {\n\n (success, result) = _wrapper.call(abi.encodeWithSignature(\n\n \"getBuyRate(address,address,uint256,bytes)\",\n\n _srcToken,\n\n _destToken,\n\n _amount,\n\n _additionalData\n\n ));\n\n }\n\n\n\n if (success) {\n\n return sliceUint(result, 0);\n\n }\n\n\n\n return 0;\n\n }\n\n\n\n /// @notice Finds the biggest rate between exchanges, needed for sell rate\n\n /// @param _wrappers Array of wrappers to compare\n\n /// @param _rates Array of rates to compare\n\n function getBiggestRate(\n\n address[] memory _wrappers,\n\n uint256[] memory _rates\n\n ) internal pure returns (address, uint) {\n\n uint256 maxIndex = 0;\n\n\n\n // starting from 0 in case there is only one rate in array\n\n for (uint256 i=0; i<_rates.length; i++) {\n\n if (_rates[i] > _rates[maxIndex]) {\n\n maxIndex = i;\n\n }\n\n }\n\n\n\n return (_wrappers[maxIndex], _rates[maxIndex]);\n\n }\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n function sliceUint(bytes memory bs, uint256 start) internal pure returns (uint256) {\n\n require(bs.length >= start + 32, \"slicing out of range\");\n\n\n\n uint256 x;\n\n assembly {\n\n x := mload(add(bs, add(0x20, start)))\n\n }\n\n\n\n return x;\n\n }\n\n}\n\nabstract contract CEtherInterface {\n\n function mint() external virtual payable;\n\n function repayBorrow() external virtual payable;\n\n}\n\nabstract contract CompoundOracleInterface {\n\n function getUnderlyingPrice(address cToken) external view virtual returns (uint);\n\n}\n\nabstract contract ComptrollerInterface {\n\n struct CompMarketState {\n\n uint224 index;\n\n uint32 block;\n\n }\n\n\n\n function claimComp(address holder) public virtual;\n\n function claimComp(address holder, address[] memory cTokens) public virtual;\n\n function claimComp(address[] memory holders, address[] memory cTokens, bool borrowers, bool suppliers) public virtual;\n\n\n\n function compSupplyState(address) public view virtual returns (CompMarketState memory);\n\n function compSupplierIndex(address,address) public view virtual returns (uint);\n\n function compAccrued(address) public view virtual returns (uint);\n\n\n\n function compBorrowState(address) public view virtual returns (CompMarketState memory);\n\n function compBorrowerIndex(address,address) public view virtual returns (uint);\n\n\n\n function enterMarkets(address[] calldata cTokens) external virtual returns (uint256[] memory);\n\n\n\n function exitMarket(address cToken) external virtual returns (uint256);\n\n\n\n function getAssetsIn(address account) external virtual view returns (address[] memory);\n\n\n\n function markets(address account) public virtual view returns (bool, uint256);\n\n\n\n function getAccountLiquidity(address account) external virtual view returns (uint256, uint256, uint256);\n\n\n\n function oracle() public virtual view returns (address);\n\n}\n\nabstract contract DSProxyInterface {\n\n\n\n /// Truffle wont compile if this isn't commented\n\n // function execute(bytes memory _code, bytes memory _data)\n\n // public virtual\n\n // payable\n\n // returns (address, bytes32);\n\n\n\n function execute(address _target, bytes memory _data) public virtual payable returns (bytes32);\n\n\n\n function setCache(address _cacheAddr) public virtual payable returns (bool);\n\n\n\n function owner() public virtual returns (address);\n\n}\n\nabstract contract DaiJoin {\n\n function vat() public virtual returns (Vat);\n\n function dai() public virtual returns (Gem);\n\n function join(address, uint) public virtual payable;\n\n function exit(address, uint) public virtual;\n\n}\n\ninterface ERC20 {\n\n function totalSupply() external view returns (uint256 supply);\n\n\n\n function balanceOf(address _owner) external view returns (uint256 balance);\n\n\n\n function transfer(address _to, uint256 _value) external returns (bool success);\n\n\n\n function transferFrom(address _from, address _to, uint256 _value)\n\n external\n\n returns (bool success);\n\n\n\n function approve(address _spender, uint256 _value) external returns (bool success);\n\n\n\n function allowance(address _owner, address _spender) external view returns (uint256 remaining);\n\n\n\n function decimals() external view returns (uint256 digits);\n\n\n\n event Approval(address indexed _owner, address indexed _spender, uint256 _value);\n\n}\n\ninterface ExchangeInterface {\n\n function swapEtherToToken(uint256 _ethAmount, address _tokenAddress, uint256 _maxAmount)\n\n external\n\n payable\n\n returns (uint256, uint256);\n\n\n\n function swapTokenToEther(address _tokenAddress, uint256 _amount, uint256 _maxAmount)\n\n external\n\n returns (uint256);\n\n\n\n function swapTokenToToken(address _src, address _dest, uint256 _amount)\n\n external\n\n payable\n\n returns (uint256);\n\n\n\n function getExpectedRate(address src, address dest, uint256 srcQty)\n\n external\n\n view\n\n returns (uint256 expectedRate);\n\n}\n\ninterface ExchangeInterfaceV2 {\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable returns (uint);\n\n\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external payable returns(uint);\n\n\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) external view returns (uint);\n\n\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _srcAmount) external view returns (uint);\n\n}\n\ninterface ExchangeInterfaceV3 {\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) external payable returns (uint);\n\n\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount, bytes memory _additionalData) external payable returns(uint);\n\n\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) external view returns (uint);\n\n\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) external view returns (uint);\n\n}\n\nabstract contract Flipper {\n\n function bids(uint _bidId) public virtual returns (uint256, uint256, address, uint48, uint48, address, address, uint256);\n\n function tend(uint id, uint lot, uint bid) virtual external;\n\n function dent(uint id, uint lot, uint bid) virtual external;\n\n function deal(uint id) virtual external;\n\n}\n\nabstract contract GasTokenInterface is ERC20 {\n\n function free(uint256 value) public virtual returns (bool success);\n\n\n\n function freeUpTo(uint256 value) public virtual returns (uint256 freed);\n\n\n\n function freeFrom(address from, uint256 value) public virtual returns (bool success);\n\n\n\n function freeFromUpTo(address from, uint256 value) public virtual returns (uint256 freed);\n\n}\n\nabstract contract Gem {\n\n function dec() virtual public returns (uint);\n\n function gem() virtual public returns (Gem);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n\n\n function approve(address, uint) virtual public;\n\n function transfer(address, uint) virtual public returns (bool);\n\n function transferFrom(address, address, uint) virtual public returns (bool);\n\n function deposit() virtual public payable;\n\n function withdraw(uint) virtual public;\n\n function allowance(address, address) virtual public returns (uint);\n\n}\n\nabstract contract IAToken {\n\n function redeem(uint256 _amount) external virtual;\n\n function balanceOf(address _owner) external virtual view returns (uint256 balance);\n\n}\n\nabstract contract IAaveSubscription {\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) public virtual;\n\n function unsubscribe() public virtual;\n\n}\n\nabstract contract ICompoundSubscription {\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) public virtual;\n\n function unsubscribe() public virtual;\n\n}\n\nabstract contract ICompoundSubscriptions {\n\n function unsubscribe() external virtual ;\n\n}\n\nabstract contract ILendingPool {\n\n function flashLoan( address payable _receiver, address _reserve, uint _amount, bytes calldata _params) external virtual;\n\n function deposit(address _reserve, uint256 _amount, uint16 _referralCode) external virtual payable;\n\n\tfunction setUserUseReserveAsCollateral(address _reserve, bool _useAsCollateral) external virtual;\n\n\tfunction borrow(address _reserve, uint256 _amount, uint256 _interestRateMode, uint16 _referralCode) external virtual;\n\n\tfunction repay( address _reserve, uint256 _amount, address payable _onBehalfOf) external virtual payable;\n\n\tfunction swapBorrowRateMode(address _reserve) external virtual;\n\n function getReserves() external virtual view returns(address[] memory);\n\n\n\n /// @param _reserve underlying token address\n\n function getReserveData(address _reserve)\n\n external virtual\n\n view\n\n returns (\n\n uint256 totalLiquidity, // reserve total liquidity\n\n uint256 availableLiquidity, // reserve available liquidity for borrowing\n\n uint256 totalBorrowsStable, // total amount of outstanding borrows at Stable rate\n\n uint256 totalBorrowsVariable, // total amount of outstanding borrows at Variable rate\n\n uint256 liquidityRate, // current deposit APY of the reserve for depositors, in Ray units.\n\n uint256 variableBorrowRate, // current variable rate APY of the reserve pool, in Ray units.\n\n uint256 stableBorrowRate, // current stable rate APY of the reserve pool, in Ray units.\n\n uint256 averageStableBorrowRate, // current average stable borrow rate\n\n uint256 utilizationRate, // expressed as total borrows/total liquidity.\n\n uint256 liquidityIndex, // cumulative liquidity index\n\n uint256 variableBorrowIndex, // cumulative variable borrow index\n\n address aTokenAddress, // aTokens contract address for the specific _reserve\n\n uint40 lastUpdateTimestamp // timestamp of the last update of reserve data\n\n );\n\n\n\n /// @param _user users address\n\n function getUserAccountData(address _user)\n\n external virtual\n\n view\n\n returns (\n\n uint256 totalLiquidityETH, // user aggregated deposits across all the reserves. In Wei\n\n uint256 totalCollateralETH, // user aggregated collateral across all the reserves. In Wei\n\n uint256 totalBorrowsETH, // user aggregated outstanding borrows across all the reserves. In Wei\n\n uint256 totalFeesETH, // user aggregated current outstanding fees in ETH. In Wei\n\n uint256 availableBorrowsETH, // user available amount to borrow in ETH\n\n uint256 currentLiquidationThreshold, // user current average liquidation threshold across all the collaterals deposited\n\n uint256 ltv, // user average Loan-to-Value between all the collaterals\n\n uint256 healthFactor // user current Health Factor\n\n ); \n\n\n\n /// @param _reserve underlying token address\n\n /// @param _user users address\n\n function getUserReserveData(address _reserve, address _user)\n\n external virtual\n\n view\n\n returns (\n\n uint256 currentATokenBalance, // user current reserve aToken balance\n\n uint256 currentBorrowBalance, // user current reserve outstanding borrow balance\n\n uint256 principalBorrowBalance, // user balance of borrowed asset\n\n uint256 borrowRateMode, // user borrow rate mode either Stable or Variable\n\n uint256 borrowRate, // user current borrow rate APY\n\n uint256 liquidityRate, // user current earn rate on _reserve\n\n uint256 originationFee, // user outstanding loan origination fee\n\n uint256 variableBorrowIndex, // user variable cumulative index\n\n uint256 lastUpdateTimestamp, // Timestamp of the last data update\n\n bool usageAsCollateralEnabled // Whether the user's current reserve is enabled as a collateral\n\n );\n\n\n\n function getReserveConfigurationData(address _reserve)\n\n external virtual\n\n view\n\n returns (\n\n uint256 ltv,\n\n uint256 liquidationThreshold,\n\n uint256 liquidationBonus,\n\n address rateStrategyAddress,\n\n bool usageAsCollateralEnabled,\n\n bool borrowingEnabled,\n\n bool stableBorrowRateEnabled,\n\n bool isActive\n\n );\n\n\n\n // ------------------ LendingPoolCoreData ------------------------\n\n function getReserveATokenAddress(address _reserve) public virtual view returns (address);\n\n function getReserveConfiguration(address _reserve)\n\n external virtual\n\n view\n\n returns (uint256, uint256, uint256, bool);\n\n function getUserUnderlyingAssetBalance(address _reserve, address _user)\n\n public virtual\n\n view\n\n returns (uint256);\n\n\n\n function getReserveCurrentLiquidityRate(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveCurrentVariableBorrowRate(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveCurrentStableBorrowRate(address _reserve) \n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveTotalLiquidity(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveAvailableLiquidity(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n function getReserveTotalBorrowsVariable(address _reserve)\n\n public virtual\n\n view\n\n returns (uint256);\n\n\n\n // ---------------- LendingPoolDataProvider ---------------------\n\n function calculateUserGlobalData(address _user)\n\n public virtual\n\n view\n\n returns (\n\n uint256 totalLiquidityBalanceETH,\n\n uint256 totalCollateralBalanceETH,\n\n uint256 totalBorrowBalanceETH,\n\n uint256 totalFeesETH,\n\n uint256 currentLtv,\n\n uint256 currentLiquidationThreshold,\n\n uint256 healthFactor,\n\n bool healthFactorBelowThreshold\n\n );\n\n}\n\nabstract contract ILendingPoolAddressesProvider {\n\n\n\n function getLendingPool() public virtual view returns (address);\n\n function getLendingPoolCore() public virtual view returns (address payable);\n\n function getLendingPoolConfigurator() public virtual view returns (address);\n\n function getLendingPoolDataProvider() public virtual view returns (address);\n\n function getLendingPoolParametersProvider() public virtual view returns (address);\n\n function getTokenDistributor() public virtual view returns (address);\n\n function getFeeProvider() public virtual view returns (address);\n\n function getLendingPoolLiquidationManager() public virtual view returns (address);\n\n function getLendingPoolManager() public virtual view returns (address);\n\n function getPriceOracle() public virtual view returns (address);\n\n function getLendingRateOracle() public virtual view returns (address);\n\n}\n\nabstract contract ILoanShifter {\n\n function getLoanAmount(uint, address) public virtual returns (uint);\n\n function getUnderlyingAsset(address _addr) public view virtual returns (address);\n\n}\n\nabstract contract IMCDSubscriptions {\n\n function unsubscribe(uint256 _cdpId) external virtual ;\n\n function subscribersPos(uint256 _cdpId) external virtual returns (uint256, bool);\n\n}\n\nabstract contract IPriceOracleGetterAave {\n\n function getAssetPrice(address _asset) external virtual view returns (uint256);\n\n function getAssetsPrices(address[] calldata _assets) external virtual view returns(uint256[] memory);\n\n function getSourceOfAsset(address _asset) external virtual view returns(address);\n\n function getFallbackOracle() external virtual view returns(address);\n\n}\n\nabstract contract ITokenInterface is ERC20 {\n\n function assetBalanceOf(address _owner) public virtual view returns (uint256);\n\n\n\n function mint(address receiver, uint256 depositAmount) external virtual returns (uint256 mintAmount);\n\n\n\n function burn(address receiver, uint256 burnAmount) external virtual returns (uint256 loanAmountPaid);\n\n\n\n function tokenPrice() public virtual view returns (uint256 price);\n\n}\n\nabstract contract Join {\n\n bytes32 public ilk;\n\n\n\n function dec() virtual public view returns (uint);\n\n function gem() virtual public view returns (Gem);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\nabstract contract Jug {\n\n struct Ilk {\n\n uint256 duty;\n\n uint256 rho;\n\n }\n\n\n\n mapping (bytes32 => Ilk) public ilks;\n\n\n\n function drip(bytes32) public virtual returns (uint);\n\n}\n\nabstract contract KyberNetworkProxyInterface {\n\n function maxGasPrice() external virtual view returns (uint256);\n\n\n\n function getUserCapInWei(address user) external virtual view returns (uint256);\n\n\n\n function getUserCapInTokenWei(address user, ERC20 token) external virtual view returns (uint256);\n\n\n\n function enabled() external virtual view returns (bool);\n\n\n\n function info(bytes32 id) external virtual view returns (uint256);\n\n\n\n function getExpectedRate(ERC20 src, ERC20 dest, uint256 srcQty)\n\n public virtual\n\n view\n\n returns (uint256 expectedRate, uint256 slippageRate);\n\n\n\n function tradeWithHint(\n\n ERC20 src,\n\n uint256 srcAmount,\n\n ERC20 dest,\n\n address destAddress,\n\n uint256 maxDestAmount,\n\n uint256 minConversionRate,\n\n address walletId,\n\n bytes memory hint\n\n ) public virtual payable returns (uint256);\n\n\n\n function trade(\n\n ERC20 src,\n\n uint256 srcAmount,\n\n ERC20 dest,\n\n address destAddress,\n\n uint256 maxDestAmount,\n\n uint256 minConversionRate,\n\n address walletId\n\n ) public virtual payable returns (uint256);\n\n\n\n function swapEtherToToken(ERC20 token, uint256 minConversionRate)\n\n external virtual\n\n payable\n\n returns (uint256);\n\n\n\n function swapTokenToEther(ERC20 token, uint256 tokenQty, uint256 minRate)\n\n external virtual\n\n payable\n\n returns (uint256);\n\n\n\n function swapTokenToToken(ERC20 src, uint256 srcAmount, ERC20 dest, uint256 minConversionRate)\n\n public virtual\n\n returns (uint256);\n\n}\n\nabstract contract Manager {\n\n function last(address) virtual public returns (uint);\n\n function cdpCan(address, uint, address) virtual public view returns (uint);\n\n function ilks(uint) virtual public view returns (bytes32);\n\n function owns(uint) virtual public view returns (address);\n\n function urns(uint) virtual public view returns (address);\n\n function vat() virtual public view returns (address);\n\n function open(bytes32, address) virtual public returns (uint);\n\n function give(uint, address) virtual public;\n\n function cdpAllow(uint, address, uint) virtual public;\n\n function urnAllow(address, uint) virtual public;\n\n function frob(uint, int, int) virtual public;\n\n function flux(uint, address, uint) virtual public;\n\n function move(uint, address, uint) virtual public;\n\n function exit(address, uint, address, uint) virtual public;\n\n function quit(uint, address) virtual public;\n\n function enter(address, uint) virtual public;\n\n function shift(uint, uint) virtual public;\n\n}\n\nabstract contract OasisInterface {\n\n function getBuyAmount(address tokenToBuy, address tokenToPay, uint256 amountToPay)\n\n external\n\n virtual\n\n view\n\n returns (uint256 amountBought);\n\n\n\n function getPayAmount(address tokenToPay, address tokenToBuy, uint256 amountToBuy)\n\n public virtual\n\n view\n\n returns (uint256 amountPaid);\n\n\n\n function sellAllAmount(address pay_gem, uint256 pay_amt, address buy_gem, uint256 min_fill_amount)\n\n public virtual\n\n returns (uint256 fill_amt);\n\n\n\n function buyAllAmount(address buy_gem, uint256 buy_amt, address pay_gem, uint256 max_fill_amount)\n\n public virtual\n\n returns (uint256 fill_amt);\n\n}\n\nabstract contract Osm {\n\n mapping(address => uint256) public bud;\n\n\n\n function peep() external view virtual returns (bytes32, bool);\n\n}\n\nabstract contract OsmMom {\n\n mapping (bytes32 => address) public osms;\n\n}\n\nabstract contract PipInterface {\n\n function read() public virtual returns (bytes32);\n\n}\n\nabstract contract ProxyRegistryInterface {\n\n function proxies(address _owner) public virtual view returns (address);\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract Spotter {\n\n struct Ilk {\n\n PipInterface pip;\n\n uint256 mat;\n\n }\n\n\n\n mapping (bytes32 => Ilk) public ilks;\n\n\n\n uint256 public par;\n\n\n\n}\n\nabstract contract TokenInterface {\n\n function allowance(address, address) public virtual returns (uint256);\n\n\n\n function balanceOf(address) public virtual returns (uint256);\n\n\n\n function approve(address, uint256) public virtual;\n\n\n\n function transfer(address, uint256) public virtual returns (bool);\n\n\n\n function transferFrom(address, address, uint256) public virtual returns (bool);\n\n\n\n function deposit() public virtual payable;\n\n\n\n function withdraw(uint256) public virtual;\n\n}\n\nabstract contract UniswapExchangeInterface {\n\n function getEthToTokenInputPrice(uint256 eth_sold)\n\n external virtual\n\n view\n\n returns (uint256 tokens_bought);\n\n\n\n function getEthToTokenOutputPrice(uint256 tokens_bought)\n\n external virtual\n\n view\n\n returns (uint256 eth_sold);\n\n\n\n function getTokenToEthInputPrice(uint256 tokens_sold)\n\n external virtual\n\n view\n\n returns (uint256 eth_bought);\n\n\n\n function getTokenToEthOutputPrice(uint256 eth_bought)\n\n external virtual\n\n view\n\n returns (uint256 tokens_sold);\n\n\n\n function tokenToEthTransferInput(\n\n uint256 tokens_sold,\n\n uint256 min_eth,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual returns (uint256 eth_bought);\n\n\n\n function ethToTokenTransferInput(uint256 min_tokens, uint256 deadline, address recipient)\n\n external virtual\n\n payable\n\n returns (uint256 tokens_bought);\n\n\n\n function tokenToTokenTransferInput(\n\n uint256 tokens_sold,\n\n uint256 min_tokens_bought,\n\n uint256 min_eth_bought,\n\n uint256 deadline,\n\n address recipient,\n\n address token_addr\n\n ) external virtual returns (uint256 tokens_bought);\n\n\n\n function ethToTokenTransferOutput(\n\n uint256 tokens_bought,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual payable returns (uint256 eth_sold);\n\n\n\n function tokenToEthTransferOutput(\n\n uint256 eth_bought,\n\n uint256 max_tokens,\n\n uint256 deadline,\n\n address recipient\n\n ) external virtual returns (uint256 tokens_sold);\n\n\n\n function tokenToTokenTransferOutput(\n\n uint256 tokens_bought,\n\n uint256 max_tokens_sold,\n\n uint256 max_eth_sold,\n\n uint256 deadline,\n\n address recipient,\n\n address token_addr\n\n ) external virtual returns (uint256 tokens_sold);\n\n\n\n}\n\nabstract contract UniswapFactoryInterface {\n\n function getExchange(address token) external view virtual returns (address exchange);\n\n}\n\nabstract contract UniswapRouterInterface {\n\n function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)\n\n external\n\n virtual\n\n returns (uint[] memory amounts);\n\n\n\n function swapExactTokensForTokens(\n\n uint amountIn,\n\n uint amountOutMin,\n\n address[] calldata path,\n\n address to,\n\n uint deadline\n\n ) external virtual returns (uint[] memory amounts);\n\n\n\n function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)\n\n external virtual\n\n returns (uint[] memory amounts);\n\n\n\n function swapTokensForExactTokens(\n\n uint amountOut,\n\n uint amountInMax,\n\n address[] calldata path,\n\n address to,\n\n uint deadline\n\n ) external virtual returns (uint[] memory amounts);\n\n\n\n function getAmountsOut(uint amountIn, address[] memory path) public virtual view returns (uint[] memory amounts);\n\n\n\n function getAmountsIn(uint amountOut, address[] memory path) public virtual view returns (uint[] memory amounts);\n\n}\n\nabstract contract Vat {\n\n\n\n struct Urn {\n\n uint256 ink; // Locked Collateral [wad]\n\n uint256 art; // Normalised Debt [wad]\n\n }\n\n\n\n struct Ilk {\n\n uint256 Art; // Total Normalised Debt [wad]\n\n uint256 rate; // Accumulated Rates [ray]\n\n uint256 spot; // Price with Safety Margin [ray]\n\n uint256 line; // Debt Ceiling [rad]\n\n uint256 dust; // Urn Debt Floor [rad]\n\n }\n\n\n\n mapping (bytes32 => mapping (address => Urn )) public urns;\n\n mapping (bytes32 => Ilk) public ilks;\n\n mapping (bytes32 => mapping (address => uint)) public gem; // [wad]\n\n\n\n function can(address, address) virtual public view returns (uint);\n\n function dai(address) virtual public view returns (uint);\n\n function frob(bytes32, address, address, address, int, int) virtual public;\n\n function hope(address) virtual public;\n\n function move(address, address, uint) virtual public;\n\n function fork(bytes32, address, address, int, int) virtual public;\n\n}\n\ncontract DefisaverLogger {\n\n event LogEvent(\n\n address indexed contractAddress,\n\n address indexed caller,\n\n string indexed logName,\n\n bytes data\n\n );\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function Log(address _contract, address _caller, string memory _logName, bytes memory _data)\n\n public\n\n {\n\n emit LogEvent(_contract, _caller, _logName, _data);\n\n }\n\n}\n\ncontract MCDMonitorProxyV2 is AdminAuth {\n\n\n\n uint public CHANGE_PERIOD;\n\n address public monitor;\n\n address public newMonitor;\n\n address public lastMonitor;\n\n uint public changeRequestedTimestamp;\n\n\n\n mapping(address => bool) public allowed;\n\n\n\n event MonitorChangeInitiated(address oldMonitor, address newMonitor);\n\n event MonitorChangeCanceled();\n\n event MonitorChangeFinished(address monitor);\n\n event MonitorChangeReverted(address monitor);\n\n\n\n // if someone who is allowed become malicious, owner can't be changed\n\n modifier onlyAllowed() {\n\n require(allowed[msg.sender] || msg.sender == owner);\n\n _;\n\n }\n\n\n\n modifier onlyMonitor() {\n\n require (msg.sender == monitor);\n\n _;\n\n }\n\n\n\n constructor(uint _changePeriod) public {\n\n CHANGE_PERIOD = _changePeriod * 1 days;\n\n }\n\n\n\n /// @notice Only monitor contract is able to call execute on users proxy\n\n /// @param _owner Address of cdp owner (users DSProxy address)\n\n /// @param _saverProxy Address of MCDSaverProxy\n\n /// @param _data Data to send to MCDSaverProxy\n\n function callExecute(address _owner, address _saverProxy, bytes memory _data) public payable onlyMonitor {\n\n // execute reverts if calling specific method fails\n\n DSProxyInterface(_owner).execute{value: msg.value}(_saverProxy, _data);\n\n\n\n // return if anything left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Allowed users are able to set Monitor contract without any waiting period first time\n\n /// @param _monitor Address of Monitor contract\n\n function setMonitor(address _monitor) public onlyAllowed {\n\n require(monitor == address(0));\n\n monitor = _monitor;\n\n }\n\n\n\n /// @notice Allowed users are able to start procedure for changing monitor\n\n /// @dev after CHANGE_PERIOD needs to call confirmNewMonitor to actually make a change\n\n /// @param _newMonitor address of new monitor\n\n function changeMonitor(address _newMonitor) public onlyAllowed {\n\n require(changeRequestedTimestamp == 0);\n\n\n\n changeRequestedTimestamp = now;\n\n lastMonitor = monitor;\n\n newMonitor = _newMonitor;\n\n\n\n emit MonitorChangeInitiated(lastMonitor, newMonitor);\n\n }\n\n\n\n /// @notice At any point allowed users are able to cancel monitor change\n\n function cancelMonitorChange() public onlyAllowed {\n\n require(changeRequestedTimestamp > 0);\n\n\n\n changeRequestedTimestamp = 0;\n\n newMonitor = address(0);\n\n\n\n emit MonitorChangeCanceled();\n\n }\n\n\n\n /// @notice Anyone is able to confirm new monitor after CHANGE_PERIOD if process is started\n\n function confirmNewMonitor() public onlyAllowed {\n\n require((changeRequestedTimestamp + CHANGE_PERIOD) < now);\n\n require(changeRequestedTimestamp != 0);\n\n require(newMonitor != address(0));\n\n\n\n monitor = newMonitor;\n\n newMonitor = address(0);\n\n changeRequestedTimestamp = 0;\n\n\n\n emit MonitorChangeFinished(monitor);\n\n }\n\n\n\n /// @notice Its possible to revert monitor to last used monitor\n\n function revertMonitor() public onlyAllowed {\n\n require(lastMonitor != address(0));\n\n\n\n monitor = lastMonitor;\n\n\n\n emit MonitorChangeReverted(monitor);\n\n }\n\n\n\n\n\n /// @notice Allowed users are able to add new allowed user\n\n /// @param _user Address of user that will be allowed\n\n function addAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = true;\n\n }\n\n\n\n /// @notice Allowed users are able to remove allowed user\n\n /// @dev owner is always allowed even if someone tries to remove it from allowed mapping\n\n /// @param _user Address of allowed user\n\n function removeAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = false;\n\n }\n\n\n\n function setChangePeriod(uint _periodInDays) public onlyAllowed {\n\n require(_periodInDays * 1 days > CHANGE_PERIOD);\n\n\n\n CHANGE_PERIOD = _periodInDays * 1 days;\n\n }\n\n\n\n}\n\ncontract MCDPriceVerifier is AdminAuth {\n\n\n\n OsmMom public osmMom = OsmMom(0x76416A4d5190d071bfed309861527431304aA14f);\n\n Manager public manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n mapping(address => bool) public authorized;\n\n\n\n function verifyVaultNextPrice(uint _nextPrice, uint _cdpId) public view returns(bool) {\n\n require(authorized[msg.sender]);\n\n\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n return verifyNextPrice(_nextPrice, ilk);\n\n }\n\n\n\n function verifyNextPrice(uint _nextPrice, bytes32 _ilk) public view returns(bool) {\n\n require(authorized[msg.sender]);\n\n\n\n address osmAddress = osmMom.osms(_ilk);\n\n\n\n uint whitelisted = Osm(osmAddress).bud(address(this));\n\n // If contracts doesn't have access return true\n\n if (whitelisted != 1) return true;\n\n\n\n (bytes32 price, bool has) = Osm(osmAddress).peep();\n\n\n\n return has ? uint(price) == _nextPrice : false;\n\n }\n\n\n\n function setAuthorized(address _address, bool _allowed) public onlyOwner {\n\n authorized[_address] = _allowed;\n\n }\n\n}\n\nabstract contract StaticV2 {\n\n\n\n enum Method { Boost, Repay }\n\n\n\n struct CdpHolder {\n\n uint128 minRatio;\n\n uint128 maxRatio;\n\n uint128 optimalRatioBoost;\n\n uint128 optimalRatioRepay;\n\n address owner;\n\n uint cdpId;\n\n bool boostEnabled;\n\n bool nextPriceEnabled;\n\n }\n\n\n\n struct SubPosition {\n\n uint arrPos;\n\n bool subscribed;\n\n }\n\n}\n\ncontract SubscriptionsInterfaceV2 {\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled, bool _nextPriceEnabled) external {}\n\n function unsubscribe(uint _cdpId) external {}\n\n}\n\ncontract SubscriptionsProxyV2 {\n\n\n\n address public constant MONITOR_PROXY_ADDRESS = 0x7456f4218874eAe1aF8B83a64848A1B89fEB7d7C;\n\n address public constant OLD_SUBSCRIPTION = 0x83152CAA0d344a2Fd428769529e2d490A88f4393;\n\n address public constant FACTORY_ADDRESS = 0x5a15566417e6C1c9546523066500bDDBc53F88C7;\n\n\n\n function migrate(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(OLD_SUBSCRIPTION).unsubscribe(_cdpId);\n\n\n\n subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled, _subscriptions);\n\n }\n\n\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n\n\n address currAuthority = address(DSAuth(address(this)).authority());\n\n DSGuard guard = DSGuard(currAuthority);\n\n\n\n if (currAuthority == address(0)) {\n\n guard = DSGuardFactory(FACTORY_ADDRESS).newGuard();\n\n DSAuth(address(this)).setAuthority(DSAuthority(address(guard)));\n\n }\n\n\n\n guard.permit(MONITOR_PROXY_ADDRESS, address(this), bytes4(keccak256(\"execute(address,bytes)\")));\n\n\n\n SubscriptionsInterfaceV2(_subscriptions).subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled);\n\n }\n\n\n\n function update(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalRatioBoost, uint128 _optimalRatioRepay, bool _boostEnabled, bool _nextPriceEnabled, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(_subscriptions).subscribe(_cdpId, _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled, _nextPriceEnabled);\n\n }\n\n\n\n function unsubscribe(uint _cdpId, address _subscriptions) public {\n\n SubscriptionsInterfaceV2(_subscriptions).unsubscribe(_cdpId);\n\n }\n\n}\n\ncontract SubscriptionsV2 is AdminAuth, StaticV2 {\n\n\n\n bytes32 internal constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n bytes32 internal constant BAT_ILK = 0x4241542d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n\n\n CdpHolder[] public subscribers;\n\n mapping (uint => SubPosition) public subscribersPos;\n\n\n\n mapping (bytes32 => uint) public minLimits;\n\n\n\n uint public changeIndex;\n\n\n\n Manager public manager = Manager(MANAGER_ADDRESS);\n\n Vat public vat = Vat(VAT_ADDRESS);\n\n Spotter public spotter = Spotter(SPOTTER_ADDRESS);\n\n MCDSaverProxy public saverProxy;\n\n\n\n event Subscribed(address indexed owner, uint cdpId);\n\n event Unsubscribed(address indexed owner, uint cdpId);\n\n event Updated(address indexed owner, uint cdpId);\n\n event ParamUpdates(address indexed owner, uint cdpId, uint128, uint128, uint128, uint128, bool boostEnabled);\n\n\n\n /// @param _saverProxy Address of the MCDSaverProxy contract\n\n constructor(address _saverProxy) public {\n\n saverProxy = MCDSaverProxy(payable(_saverProxy));\n\n\n\n minLimits[ETH_ILK] = 1700000000000000000;\n\n minLimits[BAT_ILK] = 1700000000000000000;\n\n }\n\n\n\n /// @dev Called by the DSProxy contract which owns the CDP\n\n /// @notice Adds the users CDP in the list of subscriptions so it can be monitored\n\n /// @param _cdpId Id of the CDP\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalBoost Ratio amount which boost should target\n\n /// @param _optimalRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n /// @param _nextPriceEnabled Boolean determing if we can use nextPrice for this cdp\n\n function subscribe(uint _cdpId, uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled, bool _nextPriceEnabled) external {\n\n require(isOwner(msg.sender, _cdpId), \"Must be called by Cdp owner\");\n\n\n\n // if boost is not enabled, set max ratio to max uint\n\n uint128 localMaxRatio = _boostEnabled ? _maxRatio : uint128(-1);\n\n require(checkParams(manager.ilks(_cdpId), _minRatio, localMaxRatio), \"Must be correct params\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n CdpHolder memory subscription = CdpHolder({\n\n minRatio: _minRatio,\n\n maxRatio: localMaxRatio,\n\n optimalRatioBoost: _optimalBoost,\n\n optimalRatioRepay: _optimalRepay,\n\n owner: msg.sender,\n\n cdpId: _cdpId,\n\n boostEnabled: _boostEnabled,\n\n nextPriceEnabled: _nextPriceEnabled\n\n });\n\n\n\n changeIndex++;\n\n\n\n if (subInfo.subscribed) {\n\n subscribers[subInfo.arrPos] = subscription;\n\n\n\n emit Updated(msg.sender, _cdpId);\n\n emit ParamUpdates(msg.sender, _cdpId, _minRatio, localMaxRatio, _optimalBoost, _optimalRepay, _boostEnabled);\n\n } else {\n\n subscribers.push(subscription);\n\n\n\n subInfo.arrPos = subscribers.length - 1;\n\n subInfo.subscribed = true;\n\n\n\n emit Subscribed(msg.sender, _cdpId);\n\n }\n\n }\n\n\n\n /// @notice Called by the users DSProxy\n\n /// @dev Owner who subscribed cancels his subscription\n\n function unsubscribe(uint _cdpId) external {\n\n require(isOwner(msg.sender, _cdpId), \"Must be called by Cdp owner\");\n\n\n\n _unsubscribe(_cdpId);\n\n }\n\n\n\n /// @dev Checks if the _owner is the owner of the CDP\n\n function isOwner(address _owner, uint _cdpId) internal view returns (bool) {\n\n return getOwner(_cdpId) == _owner;\n\n }\n\n\n\n /// @dev Checks limit for minimum ratio and if minRatio is bigger than max\n\n function checkParams(bytes32 _ilk, uint128 _minRatio, uint128 _maxRatio) internal view returns (bool) {\n\n if (_minRatio < minLimits[_ilk]) {\n\n return false;\n\n }\n\n\n\n if (_minRatio > _maxRatio) {\n\n return false;\n\n }\n\n\n\n return true;\n\n }\n\n\n\n /// @dev Internal method to remove a subscriber from the list\n\n function _unsubscribe(uint _cdpId) internal {\n\n require(subscribers.length > 0, \"Must have subscribers in the list\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n require(subInfo.subscribed, \"Must first be subscribed\");\n\n\n\n uint lastCdpId = subscribers[subscribers.length - 1].cdpId;\n\n\n\n SubPosition storage subInfo2 = subscribersPos[lastCdpId];\n\n subInfo2.arrPos = subInfo.arrPos;\n\n\n\n subscribers[subInfo.arrPos] = subscribers[subscribers.length - 1];\n\n subscribers.pop();\n\n\n\n changeIndex++;\n\n subInfo.subscribed = false;\n\n subInfo.arrPos = 0;\n\n\n\n emit Unsubscribed(msg.sender, _cdpId);\n\n }\n\n\n\n /// @notice Returns an address that owns the CDP\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(uint _cdpId) public view returns(address) {\n\n return manager.owns(_cdpId);\n\n }\n\n\n\n /// @notice Helper method for the front to get all the info about the subscribed CDP\n\n function getSubscribedInfo(uint _cdpId) public view returns(bool, uint128, uint128, uint128, uint128, address, uint coll, uint debt) {\n\n SubPosition memory subInfo = subscribersPos[_cdpId];\n\n\n\n if (!subInfo.subscribed) return (false, 0, 0, 0, 0, address(0), 0, 0);\n\n\n\n (coll, debt) = saverProxy.getCdpInfo(manager, _cdpId, manager.ilks(_cdpId));\n\n\n\n CdpHolder memory subscriber = subscribers[subInfo.arrPos];\n\n\n\n return (\n\n true,\n\n subscriber.minRatio,\n\n subscriber.maxRatio,\n\n subscriber.optimalRatioRepay,\n\n subscriber.optimalRatioBoost,\n\n subscriber.owner,\n\n coll,\n\n debt\n\n );\n\n }\n\n\n\n function getCdpHolder(uint _cdpId) public view returns (bool subscribed, CdpHolder memory) {\n\n SubPosition memory subInfo = subscribersPos[_cdpId];\n\n\n\n if (!subInfo.subscribed) return (false, CdpHolder(0, 0, 0, 0, address(0), 0, false, false));\n\n\n\n CdpHolder memory subscriber = subscribers[subInfo.arrPos];\n\n\n\n return (true, subscriber);\n\n }\n\n\n\n /// @notice Helper method for the front to get the information about the ilk of a CDP\n\n function getIlkInfo(bytes32 _ilk, uint _cdpId) public view returns(bytes32 ilk, uint art, uint rate, uint spot, uint line, uint dust, uint mat, uint par) {\n\n // send either ilk or cdpId\n\n if (_ilk == bytes32(0)) {\n\n _ilk = manager.ilks(_cdpId);\n\n }\n\n\n\n ilk = _ilk;\n\n (,mat) = spotter.ilks(_ilk);\n\n par = spotter.par();\n\n (art, rate, spot, line, dust) = vat.ilks(_ilk);\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n function getSubscribers() public view returns (CdpHolder[] memory) {\n\n return subscribers;\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n function getSubscribersByPage(uint _page, uint _perPage) public view returns (CdpHolder[] memory) {\n\n CdpHolder[] memory holders = new CdpHolder[](_perPage);\n\n\n\n uint start = _page * _perPage;\n\n uint end = start + _perPage;\n\n\n\n uint count = 0;\n\n for (uint i=start; i<end; i++) {\n\n holders[count] = subscribers[i];\n\n count++;\n\n }\n\n\n\n return holders;\n\n }\n\n\n\n ////////////// ADMIN METHODS ///////////////////\n\n\n\n /// @notice Admin function to change a min. limit for an asset\n\n function changeMinRatios(bytes32 _ilk, uint _newRatio) public onlyOwner {\n\n minLimits[_ilk] = _newRatio;\n\n }\n\n\n\n /// @notice Admin function to unsubscribe a CDP\n\n function unsubscribeByAdmin(uint _cdpId) public onlyOwner {\n\n SubPosition storage subInfo = subscribersPos[_cdpId];\n\n\n\n if (subInfo.subscribed) {\n\n _unsubscribe(_cdpId);\n\n }\n\n }\n\n}\n\ncontract BidProxy {\n\n\n\n address public constant DAI_JOIN = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n function daiBid(uint _bidId, uint _amount, address _flipper) public {\n\n uint tendAmount = _amount * (10 ** 27);\n\n\n\n joinDai(_amount);\n\n\n\n (, uint lot, , , , , , ) = Flipper(_flipper).bids(_bidId);\n\n\n\n Vat(VAT_ADDRESS).hope(_flipper);\n\n\n\n Flipper(_flipper).tend(_bidId, lot, tendAmount);\n\n }\n\n\n\n function collateralBid(uint _bidId, uint _amount, address _flipper) public {\n\n (uint bid, , , , , , , ) = Flipper(_flipper).bids(_bidId);\n\n\n\n joinDai(bid / (10**27));\n\n\n\n Vat(VAT_ADDRESS).hope(_flipper);\n\n\n\n Flipper(_flipper).dent(_bidId, _amount, bid);\n\n }\n\n\n\n function closeBid(uint _bidId, address _flipper, address _joinAddr) public {\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n Flipper(_flipper).deal(_bidId);\n\n uint amount = Vat(VAT_ADDRESS).gem(ilk, address(this));\n\n\n\n Vat(VAT_ADDRESS).hope(_joinAddr);\n\n Gem(_joinAddr).exit(msg.sender, amount);\n\n }\n\n\n\n function exitCollateral(address _joinAddr) public {\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n uint amount = Vat(VAT_ADDRESS).gem(ilk, address(this));\n\n\n\n Vat(VAT_ADDRESS).hope(_joinAddr);\n\n Gem(_joinAddr).exit(msg.sender, amount);\n\n }\n\n\n\n function exitDai() public {\n\n uint amount = Vat(VAT_ADDRESS).dai(address(this)) / (10**27);\n\n\n\n Vat(VAT_ADDRESS).hope(DAI_JOIN);\n\n Gem(DAI_JOIN).exit(msg.sender, amount);\n\n }\n\n\n\n function withdrawToken(address _token) public {\n\n uint balance = ERC20(_token).balanceOf(address(this));\n\n ERC20(_token).transfer(msg.sender, balance);\n\n }\n\n\n\n function withdrawEth() public {\n\n uint balance = address(this).balance;\n\n msg.sender.transfer(balance);\n\n }\n\n\n\n function joinDai(uint _amount) internal {\n\n uint amountInVat = Vat(VAT_ADDRESS).dai(address(this)) / (10**27);\n\n\n\n if (_amount > amountInVat) {\n\n uint amountDiff = (_amount - amountInVat) + 1;\n\n\n\n ERC20(DAI_ADDRESS).transferFrom(msg.sender, address(this), amountDiff);\n\n ERC20(DAI_ADDRESS).approve(DAI_JOIN, amountDiff);\n\n Join(DAI_JOIN).join(address(this), amountDiff);\n\n }\n\n }\n\n}\n\nabstract contract IMCDSubscriptions {\n\n function unsubscribe(uint256 _cdpId) external virtual ;\n\n\n\n function subscribersPos(uint256 _cdpId) external virtual returns (uint256, bool);\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint256) public virtual;\n\n\n\n function transfer(address, uint256) public virtual;\n\n\n\n function transferFrom(address, address, uint256) public virtual;\n\n\n\n function deposit() public virtual payable;\n\n\n\n function withdraw(uint256) public virtual;\n\n}\n\nabstract contract ManagerLike {\n\n function cdpCan(address, uint256, address) public virtual view returns (uint256);\n\n\n\n function ilks(uint256) public virtual view returns (bytes32);\n\n\n\n function owns(uint256) public virtual view returns (address);\n\n\n\n function urns(uint256) public virtual view returns (address);\n\n\n\n function vat() public virtual view returns (address);\n\n\n\n function open(bytes32, address) public virtual returns (uint256);\n\n\n\n function give(uint256, address) public virtual;\n\n\n\n function cdpAllow(uint256, address, uint256) public virtual;\n\n\n\n function urnAllow(address, uint256) public virtual;\n\n\n\n function frob(uint256, int256, int256) public virtual;\n\n\n\n function flux(uint256, address, uint256) public virtual;\n\n\n\n function move(uint256, address, uint256) public virtual;\n\n\n\n function exit(address, uint256, address, uint256) public virtual;\n\n\n\n function quit(uint256, address) public virtual;\n\n\n\n function enter(address, uint256) public virtual;\n\n\n\n function shift(uint256, uint256) public virtual;\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) public virtual view returns (uint256);\n\n\n\n function ilks(bytes32) public virtual view returns (uint256, uint256, uint256, uint256, uint256);\n\n\n\n function dai(address) public virtual view returns (uint256);\n\n\n\n function urns(bytes32, address) public virtual view returns (uint256, uint256);\n\n\n\n function frob(bytes32, address, address, address, int256, int256) public virtual;\n\n\n\n function hope(address) public virtual;\n\n\n\n function move(address, address, uint256) public virtual;\n\n}\n\nabstract contract GemJoinLike {\n\n function dec() public virtual returns (uint256);\n\n\n\n function gem() public virtual returns (GemLike);\n\n\n\n function join(address, uint256) public virtual payable;\n\n\n\n function exit(address, uint256) public virtual;\n\n}\n\nabstract contract GNTJoinLike {\n\n function bags(address) public virtual view returns (address);\n\n\n\n function make(address) public virtual returns (address);\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() public virtual returns (VatLike);\n\n\n\n function dai() public virtual returns (GemLike);\n\n\n\n function join(address, uint256) public virtual payable;\n\n\n\n function exit(address, uint256) public virtual;\n\n}\n\nabstract contract HopeLike {\n\n function hope(address) public virtual;\n\n\n\n function nope(address) public virtual;\n\n}\n\nabstract contract ProxyRegistryInterface {\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract EndLike {\n\n function fix(bytes32) public virtual view returns (uint256);\n\n\n\n function cash(bytes32, uint256) public virtual;\n\n\n\n function free(bytes32) public virtual;\n\n\n\n function pack(uint256) public virtual;\n\n\n\n function skim(bytes32, address) public virtual;\n\n}\n\nabstract contract JugLike {\n\n function drip(bytes32) public virtual returns (uint256);\n\n}\n\nabstract contract PotLike {\n\n function pie(address) public virtual view returns (uint256);\n\n\n\n function drip() public virtual returns (uint256);\n\n\n\n function join(uint256) public virtual;\n\n\n\n function exit(uint256) public virtual;\n\n}\n\nabstract contract ProxyRegistryLike {\n\n function proxies(address) public virtual view returns (address);\n\n\n\n function build(address) public virtual returns (address);\n\n}\n\nabstract contract ProxyLike {\n\n function owner() public virtual view returns (address);\n\n}\n\ncontract Common {\n\n uint256 constant RAY = 10**27;\n\n\n\n // Internal functions\n\n\n\n function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require(y == 0 || (z = x * y) / y == x, \"mul-overflow\");\n\n }\n\n\n\n // Public functions\n\n // solhint-disable-next-line func-name-mixedcase\n\n function daiJoin_join(address apt, address urn, uint256 wad) public {\n\n // Gets DAI from the user's wallet\n\n DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the DAI amount\n\n DaiJoinLike(apt).dai().approve(apt, wad);\n\n // Joins DAI into the vat\n\n DaiJoinLike(apt).join(urn, wad);\n\n }\n\n}\n\ncontract MCDCreateProxyActions is Common {\n\n // Internal functions\n\n\n\n function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {\n\n require((z = x - y) <= x, \"sub-overflow\");\n\n }\n\n\n\n function toInt(uint256 x) internal pure returns (int256 y) {\n\n y = int256(x);\n\n require(y >= 0, \"int-overflow\");\n\n }\n\n\n\n function toRad(uint256 wad) internal pure returns (uint256 rad) {\n\n rad = mul(wad, 10**27);\n\n }\n\n\n\n function convertTo18(address gemJoin, uint256 amt) internal returns (uint256 wad) {\n\n // For those collaterals that have less than 18 decimals precision we need to do the conversion before passing to frob function\n\n // Adapters will automatically handle the difference of precision\n\n wad = mul(amt, 10**(18 - GemJoinLike(gemJoin).dec()));\n\n }\n\n\n\n function _getDrawDart(address vat, address jug, address urn, bytes32 ilk, uint256 wad)\n\n internal\n\n returns (int256 dart)\n\n {\n\n // Updates stability fee rate\n\n uint256 rate = JugLike(jug).drip(ilk);\n\n\n\n // Gets DAI balance of the urn in the vat\n\n uint256 dai = VatLike(vat).dai(urn);\n\n\n\n // If there was already enough DAI in the vat balance, just exits it without adding more debt\n\n if (dai < mul(wad, RAY)) {\n\n // Calculates the needed dart so together with the existing dai in the vat is enough to exit wad amount of DAI tokens\n\n dart = toInt(sub(mul(wad, RAY), dai) / rate);\n\n // This is neeeded due lack of precision. It might need to sum an extra dart wei (for the given DAI wad amount)\n\n dart = mul(uint256(dart), rate) < mul(wad, RAY) ? dart + 1 : dart;\n\n }\n\n }\n\n\n\n function _getWipeDart(address vat, uint256 dai, address urn, bytes32 ilk)\n\n internal\n\n view\n\n returns (int256 dart)\n\n {\n\n // Gets actual rate from the vat\n\n (, uint256 rate, , , ) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint256 art) = VatLike(vat).urns(ilk, urn);\n\n\n\n // Uses the whole dai balance in the vat to reduce the debt\n\n dart = toInt(dai / rate);\n\n // Checks the calculated dart is not higher than urn.art (total debt), otherwise uses its value\n\n dart = uint256(dart) <= art ? -dart : -toInt(art);\n\n }\n\n\n\n function _getWipeAllWad(address vat, address usr, address urn, bytes32 ilk)\n\n internal\n\n view\n\n returns (uint256 wad)\n\n {\n\n // Gets actual rate from the vat\n\n (, uint256 rate, , , ) = VatLike(vat).ilks(ilk);\n\n // Gets actual art value of the urn\n\n (, uint256 art) = VatLike(vat).urns(ilk, urn);\n\n // Gets actual dai amount in the urn\n\n uint256 dai = VatLike(vat).dai(usr);\n\n\n\n uint256 rad = sub(mul(art, rate), dai);\n\n wad = rad / RAY;\n\n\n\n // If the rad precision has some dust, it will need to request for 1 extra wad wei\n\n wad = mul(wad, RAY) < rad ? wad + 1 : wad;\n\n }\n\n\n\n // Public functions\n\n\n\n function transfer(address gem, address dst, uint256 wad) public {\n\n GemLike(gem).transfer(dst, wad);\n\n }\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function ethJoin_join(address apt, address urn) public payable {\n\n // Wraps ETH in WETH\n\n GemJoinLike(apt).gem().deposit{value: msg.value}();\n\n // Approves adapter to take the WETH amount\n\n GemJoinLike(apt).gem().approve(address(apt), msg.value);\n\n // Joins WETH collateral into the vat\n\n GemJoinLike(apt).join(urn, msg.value);\n\n }\n\n\n\n // solhint-disable-next-line func-name-mixedcase\n\n function gemJoin_join(address apt, address urn, uint256 wad, bool transferFrom) public {\n\n // Only executes for tokens that have approval/transferFrom implementation\n\n if (transferFrom) {\n\n // Gets token from the user's wallet\n\n GemJoinLike(apt).gem().transferFrom(msg.sender, address(this), wad);\n\n // Approves adapter to take the token amount\n\n GemJoinLike(apt).gem().approve(apt, 0);\n\n GemJoinLike(apt).gem().approve(apt, wad);\n\n }\n\n // Joins token collateral into the vat\n\n GemJoinLike(apt).join(urn, wad);\n\n }\n\n\n\n function hope(address obj, address usr) public {\n\n HopeLike(obj).hope(usr);\n\n }\n\n\n\n function nope(address obj, address usr) public {\n\n HopeLike(obj).nope(usr);\n\n }\n\n\n\n function open(address manager, bytes32 ilk, address usr) public returns (uint256 cdp) {\n\n cdp = ManagerLike(manager).open(ilk, usr);\n\n }\n\n\n\n function give(address manager, uint256 cdp, address usr) public {\n\n ManagerLike(manager).give(cdp, usr);\n\n }\n\n\n\n function move(address manager, uint256 cdp, address dst, uint256 rad) public {\n\n ManagerLike(manager).move(cdp, dst, rad);\n\n }\n\n\n\n function frob(address manager, uint256 cdp, int256 dink, int256 dart) public {\n\n ManagerLike(manager).frob(cdp, dink, dart);\n\n }\n\n\n\n function lockETH(address manager, address ethJoin, uint256 cdp) public payable {\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, address(this));\n\n // Locks WETH amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(msg.value),\n\n 0\n\n );\n\n }\n\n\n\n function lockGem(address manager, address gemJoin, uint256 cdp, uint256 wad, bool transferFrom)\n\n public\n\n {\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, address(this), wad, transferFrom);\n\n // Locks token amount into the CDP\n\n VatLike(ManagerLike(manager).vat()).frob(\n\n ManagerLike(manager).ilks(cdp),\n\n ManagerLike(manager).urns(cdp),\n\n address(this),\n\n address(this),\n\n toInt(convertTo18(gemJoin, wad)),\n\n 0\n\n );\n\n }\n\n\n\n function draw(address manager, address jug, address daiJoin, uint256 cdp, uint256 wad) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Generates debt in the CDP\n\n frob(manager, cdp, 0, _getDrawDart(vat, jug, urn, ilk, wad));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wad));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wad);\n\n }\n\n\n\n function lockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n uint256 cdp,\n\n uint256 wadD\n\n ) public payable {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Receives ETH amount, converts it to WETH and joins it into the vat\n\n ethJoin_join(ethJoin, urn);\n\n // Locks WETH amount into the CDP and generates debt\n\n frob(manager, cdp, toInt(msg.value), _getDrawDart(vat, jug, urn, ilk, wadD));\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n }\n\n\n\n function openLockETHAndDraw(\n\n address manager,\n\n address jug,\n\n address ethJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint256 wadD,\n\n address owner\n\n ) public payable returns (uint256 cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockETHAndDraw(manager, jug, ethJoin, daiJoin, cdp, wadD);\n\n give(manager, cdp, owner);\n\n }\n\n\n\n function lockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n uint256 cdp,\n\n uint256 wadC,\n\n uint256 wadD,\n\n bool transferFrom\n\n ) public {\n\n address urn = ManagerLike(manager).urns(cdp);\n\n address vat = ManagerLike(manager).vat();\n\n bytes32 ilk = ManagerLike(manager).ilks(cdp);\n\n // Takes token amount from user's wallet and joins into the vat\n\n gemJoin_join(gemJoin, urn, wadC, transferFrom);\n\n // Locks token amount into the CDP and generates debt\n\n frob(\n\n manager,\n\n cdp,\n\n toInt(convertTo18(gemJoin, wadC)),\n\n _getDrawDart(vat, jug, urn, ilk, wadD)\n\n );\n\n // Moves the DAI amount (balance in the vat in rad) to proxy's address\n\n move(manager, cdp, address(this), toRad(wadD));\n\n // Allows adapter to access to proxy's DAI balance in the vat\n\n if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {\n\n VatLike(vat).hope(daiJoin);\n\n }\n\n // Exits DAI to the user's wallet as a token\n\n DaiJoinLike(daiJoin).exit(msg.sender, wadD);\n\n }\n\n\n\n function openLockGemAndDraw(\n\n address manager,\n\n address jug,\n\n address gemJoin,\n\n address daiJoin,\n\n bytes32 ilk,\n\n uint256 wadC,\n\n uint256 wadD,\n\n bool transferFrom,\n\n address owner\n\n ) public returns (uint256 cdp) {\n\n cdp = open(manager, ilk, address(this));\n\n lockGemAndDraw(manager, jug, gemJoin, daiJoin, cdp, wadC, wadD, transferFrom);\n\n give(manager, cdp, owner);\n\n }\n\n}\n\ncontract MCDCreateTaker {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant MCD_CREATE_FLASH_LOAN = 0x78aF7A2Ee6C2240c748aDdc42aBc9A693559dcaF;\n\n\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n struct CreateData {\n\n uint collAmount;\n\n uint daiAmount;\n\n address joinAddr;\n\n }\n\n\n\n function openWithLoan(\n\n DFSExchangeData.ExchangeData memory _exchangeData,\n\n CreateData memory _createData\n\n ) public payable {\n\n\n\n MCD_CREATE_FLASH_LOAN.transfer(msg.value); //0x fee\n\n\n\n\n\n if (!isEthJoinAddr(_createData.joinAddr)) {\n\n ERC20(getCollateralAddr(_createData.joinAddr)).safeTransferFrom(msg.sender, address(this), _createData.collAmount);\n\n ERC20(getCollateralAddr(_createData.joinAddr)).safeTransfer(MCD_CREATE_FLASH_LOAN, _createData.collAmount);\n\n }\n\n\n\n bytes memory packedData = _packData(_createData, _exchangeData);\n\n bytes memory paramsData = abi.encode(address(this), packedData);\n\n\n\n lendingPool.flashLoan(MCD_CREATE_FLASH_LOAN, DAI_ADDRESS, _createData.daiAmount, paramsData);\n\n\n\n logger.Log(address(this), msg.sender, \"MCDCreate\", abi.encode(manager.last(address(this)), _createData.collAmount, _createData.daiAmount));\n\n }\n\n\n\n function getCollateralAddr(address _joinAddr) internal view returns (address) {\n\n return address(Join(_joinAddr).gem());\n\n }\n\n\n\n /// @notice Checks if the join address is one of the Ether coll. types\n\n /// @param _joinAddr Join address to check\n\n function isEthJoinAddr(address _joinAddr) internal view returns (bool) {\n\n // if it's dai_join_addr don't check gem() it will fail\n\n if (_joinAddr == 0x9759A6Ac90977b93B58547b4A71c78317f391A28) return false;\n\n\n\n // if coll is weth it's and eth type coll\n\n if (address(Join(_joinAddr).gem()) == 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2) {\n\n return true;\n\n }\n\n\n\n return false;\n\n }\n\n\n\n function _packData(\n\n CreateData memory _createData,\n\n DFSExchangeData.ExchangeData memory _exchangeData\n\n ) internal pure returns (bytes memory) {\n\n\n\n return abi.encode(_createData, _exchangeData);\n\n }\n\n}\n\ncontract MCDSaverProxyHelper is DSMath {\n\n\n\n /// @notice Returns a normalized debt _amount based on the current rate\n\n /// @param _amount Amount of dai to be normalized\n\n /// @param _rate Current rate of the stability fee\n\n /// @param _daiVatBalance Balance od Dai in the Vat for that CDP\n\n function normalizeDrawAmount(uint _amount, uint _rate, uint _daiVatBalance) internal pure returns (int dart) {\n\n if (_daiVatBalance < mul(_amount, RAY)) {\n\n dart = toPositiveInt(sub(mul(_amount, RAY), _daiVatBalance) / _rate);\n\n dart = mul(uint(dart), _rate) < mul(_amount, RAY) ? dart + 1 : dart;\n\n }\n\n }\n\n\n\n /// @notice Converts a number to Rad percision\n\n /// @param _wad The input number in wad percision\n\n function toRad(uint _wad) internal pure returns (uint) {\n\n return mul(_wad, 10 ** 27);\n\n }\n\n\n\n /// @notice Converts a number to 18 decimal percision\n\n /// @param _joinAddr Join address of the collateral\n\n /// @param _amount Number to be converted\n\n function convertTo18(address _joinAddr, uint256 _amount) internal view returns (uint256) {\n\n return mul(_amount, 10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n /// @notice Converts a uint to int and checks if positive\n\n /// @param _x Number to be converted\n\n function toPositiveInt(uint _x) internal pure returns (int y) {\n\n y = int(_x);\n\n require(y >= 0, \"int-overflow\");\n\n }\n\n\n\n /// @notice Gets Dai amount in Vat which can be added to Cdp\n\n /// @param _vat Address of Vat contract\n\n /// @param _urn Urn of the Cdp\n\n /// @param _ilk Ilk of the Cdp\n\n function normalizePaybackAmount(address _vat, address _urn, bytes32 _ilk) internal view returns (int amount) {\n\n uint dai = Vat(_vat).dai(_urn);\n\n\n\n (, uint rate,,,) = Vat(_vat).ilks(_ilk);\n\n (, uint art) = Vat(_vat).urns(_ilk, _urn);\n\n\n\n amount = toPositiveInt(dai / rate);\n\n amount = uint(amount) <= art ? - amount : - toPositiveInt(art);\n\n }\n\n\n\n /// @notice Gets the whole debt of the CDP\n\n /// @param _vat Address of Vat contract\n\n /// @param _usr Address of the Dai holder\n\n /// @param _urn Urn of the Cdp\n\n /// @param _ilk Ilk of the Cdp\n\n function getAllDebt(address _vat, address _usr, address _urn, bytes32 _ilk) internal view returns (uint daiAmount) {\n\n (, uint rate,,,) = Vat(_vat).ilks(_ilk);\n\n (, uint art) = Vat(_vat).urns(_ilk, _urn);\n\n uint dai = Vat(_vat).dai(_usr);\n\n\n\n uint rad = sub(mul(art, rate), dai);\n\n daiAmount = rad / RAY;\n\n\n\n daiAmount = mul(daiAmount, RAY) < rad ? daiAmount + 1 : daiAmount;\n\n }\n\n\n\n /// @notice Gets the token address from the Join contract\n\n /// @param _joinAddr Address of the Join contract\n\n function getCollateralAddr(address _joinAddr) internal view returns (address) {\n\n return address(Join(_joinAddr).gem());\n\n }\n\n\n\n /// @notice Checks if the join address is one of the Ether coll. types\n\n /// @param _joinAddr Join address to check\n\n function isEthJoinAddr(address _joinAddr) internal view returns (bool) {\n\n // if it's dai_join_addr don't check gem() it will fail\n\n if (_joinAddr == 0x9759A6Ac90977b93B58547b4A71c78317f391A28) return false;\n\n\n\n // if coll is weth it's and eth type coll\n\n if (address(Join(_joinAddr).gem()) == 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2) {\n\n return true;\n\n }\n\n\n\n return false;\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt)\n\n /// @param _manager Manager contract\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getCdpInfo(Manager _manager, uint _cdpId, bytes32 _ilk) public view returns (uint, uint) {\n\n address vat = _manager.vat();\n\n address urn = _manager.urns(_cdpId);\n\n\n\n (uint collateral, uint debt) = Vat(vat).urns(_ilk, urn);\n\n (,uint rate,,,) = Vat(vat).ilks(_ilk);\n\n\n\n return (collateral, rmul(debt, rate));\n\n }\n\n\n\n /// @notice Address that owns the DSProxy that owns the CDP\n\n /// @param _manager Manager contract\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(Manager _manager, uint _cdpId) public view returns (address) {\n\n DSProxy proxy = DSProxy(uint160(_manager.owns(_cdpId)));\n\n\n\n return proxy.owner();\n\n }\n\n}\n\nabstract contract ProtocolInterface {\n\n function deposit(address _user, uint256 _amount) public virtual;\n\n\n\n function withdraw(address _user, uint256 _amount) public virtual;\n\n}\n\ncontract SavingsLogger {\n\n event Deposit(address indexed sender, uint8 protocol, uint256 amount);\n\n event Withdraw(address indexed sender, uint8 protocol, uint256 amount);\n\n event Swap(address indexed sender, uint8 fromProtocol, uint8 toProtocol, uint256 amount);\n\n\n\n function logDeposit(address _sender, uint8 _protocol, uint256 _amount) external {\n\n emit Deposit(_sender, _protocol, _amount);\n\n }\n\n\n\n function logWithdraw(address _sender, uint8 _protocol, uint256 _amount) external {\n\n emit Withdraw(_sender, _protocol, _amount);\n\n }\n\n\n\n function logSwap(address _sender, uint8 _protocolFrom, uint8 _protocolTo, uint256 _amount)\n\n external\n\n {\n\n emit Swap(_sender, _protocolFrom, _protocolTo, _amount);\n\n }\n\n}\n\ncontract AaveSavingsProtocol is ProtocolInterface, DSAuth {\n\n\n\n address public constant ADAI_ADDRESS = 0xfC1E690f61EFd961294b3e1Ce3313fBD8aa4f85d;\n\n address public constant AAVE_LENDING_POOL = 0x398eC7346DcD622eDc5ae82352F02bE94C62d119;\n\n address public constant AAVE_LENDING_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n ERC20(DAI_ADDRESS).approve(AAVE_LENDING_POOL_CORE, uint(-1));\n\n ILendingPool(AAVE_LENDING_POOL).deposit(DAI_ADDRESS, _amount, 0);\n\n\n\n ERC20(ADAI_ADDRESS).transfer(_user, ERC20(ADAI_ADDRESS).balanceOf(address(this)));\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n require(ERC20(ADAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n IAToken(ADAI_ADDRESS).redeem(_amount);\n\n\n\n // return dai we have to user\n\n ERC20(DAI_ADDRESS).transfer(_user, _amount);\n\n }\n\n}\n\ncontract CompoundSavingsProtocol {\n\n\n\n address public constant NEW_CDAI_ADDRESS = 0x5d3a536E4D6DbD6114cc1Ead35777bAB948E3643;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n CTokenInterface public constant cDaiContract = CTokenInterface(NEW_CDAI_ADDRESS);\n\n\n\n function compDeposit(address _user, uint _amount) internal {\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n // mainnet only\n\n ERC20(DAI_ADDRESS).approve(NEW_CDAI_ADDRESS, uint(-1));\n\n\n\n // mint cDai\n\n require(cDaiContract.mint(_amount) == 0, \"Failed Mint\");\n\n }\n\n\n\n function compWithdraw(address _user, uint _amount) internal {\n\n // transfer all users balance to this contract\n\n require(cDaiContract.transferFrom(_user, address(this), ERC20(NEW_CDAI_ADDRESS).balanceOf(_user)));\n\n\n\n // approve cDai to compound contract\n\n cDaiContract.approve(NEW_CDAI_ADDRESS, uint(-1));\n\n // get dai from cDai contract\n\n require(cDaiContract.redeemUnderlying(_amount) == 0, \"Reedem Failed\");\n\n\n\n // return to user balance we didn't spend\n\n uint cDaiBalance = cDaiContract.balanceOf(address(this));\n\n if (cDaiBalance > 0) {\n\n cDaiContract.transfer(_user, cDaiBalance);\n\n }\n\n // return dai we have to user\n\n ERC20(DAI_ADDRESS).transfer(_user, _amount);\n\n }\n\n}\n\nabstract contract VatLike {\n\n function can(address, address) virtual public view returns (uint);\n\n function ilks(bytes32) virtual public view returns (uint, uint, uint, uint, uint);\n\n function dai(address) virtual public view returns (uint);\n\n function urns(bytes32, address) virtual public view returns (uint, uint);\n\n function frob(bytes32, address, address, address, int, int) virtual public;\n\n function hope(address) virtual public;\n\n function move(address, address, uint) virtual public;\n\n}\n\nabstract contract PotLike {\n\n function pie(address) virtual public view returns (uint);\n\n function drip() virtual public returns (uint);\n\n function join(uint) virtual public;\n\n function exit(uint) virtual public;\n\n}\n\nabstract contract GemLike {\n\n function approve(address, uint) virtual public;\n\n function transfer(address, uint) virtual public;\n\n function transferFrom(address, address, uint) virtual public;\n\n function deposit() virtual public payable;\n\n function withdraw(uint) virtual public;\n\n}\n\nabstract contract DaiJoinLike {\n\n function vat() virtual public returns (VatLike);\n\n function dai() virtual public returns (GemLike);\n\n function join(address, uint) virtual public payable;\n\n function exit(address, uint) virtual public;\n\n}\n\ncontract DSRSavingsProtocol is DSMath {\n\n\n\n // Mainnet\n\n address public constant POT_ADDRESS = 0x197E90f9FAD81970bA7976f33CbD77088E5D7cf7;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n\n\n function dsrDeposit(uint _amount, bool _fromUser) internal {\n\n VatLike vat = DaiJoinLike(DAI_JOIN_ADDRESS).vat();\n\n\n\n uint chi = PotLike(POT_ADDRESS).drip();\n\n\n\n daiJoin_join(DAI_JOIN_ADDRESS, address(this), _amount, _fromUser);\n\n\n\n if (vat.can(address(this), address(POT_ADDRESS)) == 0) {\n\n vat.hope(POT_ADDRESS);\n\n }\n\n\n\n PotLike(POT_ADDRESS).join(mul(_amount, RAY) / chi);\n\n }\n\n\n\n function dsrWithdraw(uint _amount, bool _toUser) internal {\n\n VatLike vat = DaiJoinLike(DAI_JOIN_ADDRESS).vat();\n\n\n\n uint chi = PotLike(POT_ADDRESS).drip();\n\n uint pie = mul(_amount, RAY) / chi;\n\n\n\n PotLike(POT_ADDRESS).exit(pie);\n\n uint balance = DaiJoinLike(DAI_JOIN_ADDRESS).vat().dai(address(this));\n\n\n\n if (vat.can(address(this), address(DAI_JOIN_ADDRESS)) == 0) {\n\n vat.hope(DAI_JOIN_ADDRESS);\n\n }\n\n\n\n address to;\n\n if (_toUser) {\n\n to = msg.sender;\n\n } else {\n\n to = address(this);\n\n }\n\n\n\n if (_amount == uint(-1)) {\n\n DaiJoinLike(DAI_JOIN_ADDRESS).exit(to, mul(chi, pie) / RAY);\n\n } else {\n\n DaiJoinLike(DAI_JOIN_ADDRESS).exit(\n\n to,\n\n balance >= mul(_amount, RAY) ? _amount : balance / RAY\n\n );\n\n }\n\n }\n\n\n\n function daiJoin_join(address apt, address urn, uint wad, bool _fromUser) internal {\n\n if (_fromUser) {\n\n DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);\n\n }\n\n\n\n DaiJoinLike(apt).dai().approve(apt, wad);\n\n\n\n DaiJoinLike(apt).join(urn, wad);\n\n }\n\n}\n\ncontract DydxSavingsProtocol is ProtocolInterface, DSAuth {\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n ISoloMargin public soloMargin;\n\n address public savingsProxy;\n\n\n\n uint daiMarketId = 3;\n\n\n\n constructor() public {\n\n soloMargin = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n }\n\n\n\n function addSavingsProxy(address _savingsProxy) public auth {\n\n savingsProxy = _savingsProxy;\n\n }\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n Account.Info[] memory accounts = new Account.Info[](1);\n\n accounts[0] = getAccount(_user, 0);\n\n\n\n Actions.ActionArgs[] memory actions = new Actions.ActionArgs[](1);\n\n Types.AssetAmount memory amount = Types.AssetAmount({\n\n sign: true,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: _amount\n\n });\n\n\n\n actions[0] = Actions.ActionArgs({\n\n actionType: Actions.ActionType.Deposit,\n\n accountId: 0,\n\n amount: amount,\n\n primaryMarketId: daiMarketId,\n\n otherAddress: _user,\n\n secondaryMarketId: 0, //not used\n\n otherAccountId: 0, //not used\n\n data: \"\" //not used\n\n });\n\n\n\n soloMargin.operate(accounts, actions);\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n Account.Info[] memory accounts = new Account.Info[](1);\n\n accounts[0] = getAccount(_user, 0);\n\n\n\n Actions.ActionArgs[] memory actions = new Actions.ActionArgs[](1);\n\n Types.AssetAmount memory amount = Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: _amount\n\n });\n\n\n\n actions[0] = Actions.ActionArgs({\n\n actionType: Actions.ActionType.Withdraw,\n\n accountId: 0,\n\n amount: amount,\n\n primaryMarketId: daiMarketId,\n\n otherAddress: _user,\n\n secondaryMarketId: 0, //not used\n\n otherAccountId: 0, //not used\n\n data: \"\" //not used\n\n });\n\n\n\n soloMargin.operate(accounts, actions);\n\n }\n\n\n\n function getWeiBalance(address _user, uint _index) public view returns(Types.Wei memory) {\n\n\n\n Types.Wei[] memory weiBalances;\n\n (,,weiBalances) = soloMargin.getAccountBalances(getAccount(_user, _index));\n\n\n\n return weiBalances[daiMarketId];\n\n }\n\n\n\n function getParBalance(address _user, uint _index) public view returns(Types.Par memory) {\n\n Types.Par[] memory parBalances;\n\n (,parBalances,) = soloMargin.getAccountBalances(getAccount(_user, _index));\n\n\n\n return parBalances[daiMarketId];\n\n }\n\n\n\n function getAccount(address _user, uint _index) public pure returns(Account.Info memory) {\n\n Account.Info memory account = Account.Info({\n\n owner: _user,\n\n number: _index\n\n });\n\n\n\n return account;\n\n }\n\n}\n\nabstract contract ISoloMargin {\n\n struct OperatorArg {\n\n address operator;\n\n bool trusted;\n\n }\n\n\n\n function operate(\n\n Account.Info[] memory accounts,\n\n Actions.ActionArgs[] memory actions\n\n ) public virtual;\n\n\n\n function getAccountBalances(\n\n Account.Info memory account\n\n ) public view virtual returns (\n\n address[] memory,\n\n Types.Par[] memory,\n\n Types.Wei[] memory\n\n );\n\n\n\n function setOperators(\n\n OperatorArg[] memory args\n\n ) public virtual;\n\n\n\n\n\n function getNumMarkets() public view virtual returns (uint256);\n\n\n\n function getMarketTokenAddress(uint256 marketId)\n\n public\n\n view\n\n virtual\n\n returns (address);\n\n}\n\nlibrary Account {\n\n // ============ Enums ============\n\n\n\n /*\n\n * Most-recently-cached account status.\n\n *\n\n * Normal: Can only be liquidated if the account values are violating the global margin-ratio.\n\n * Liquid: Can be liquidated no matter the account values.\n\n * Can be vaporized if there are no more positive account values.\n\n * Vapor: Has only negative (or zeroed) account values. Can be vaporized.\n\n *\n\n */\n\n enum Status {\n\n Normal,\n\n Liquid,\n\n Vapor\n\n }\n\n\n\n // ============ Structs ============\n\n\n\n // Represents the unique key that specifies an account\n\n struct Info {\n\n address owner; // The address that owns the account\n\n uint256 number; // A nonce that allows a single address to control many accounts\n\n }\n\n\n\n // The complete storage for any account\n\n struct Storage {\n\n mapping (uint256 => Types.Par) balances; // Mapping from marketId to principal\n\n Status status;\n\n }\n\n\n\n // ============ Library Functions ============\n\n\n\n function equals(\n\n Info memory a,\n\n Info memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.owner == b.owner && a.number == b.number;\n\n }\n\n}\n\nlibrary Actions {\n\n\n\n // ============ Constants ============\n\n\n\n bytes32 constant FILE = \"Actions\";\n\n\n\n // ============ Enums ============\n\n\n\n enum ActionType {\n\n Deposit, // supply tokens\n\n Withdraw, // borrow tokens\n\n Transfer, // transfer balance between accounts\n\n Buy, // buy an amount of some token (externally)\n\n Sell, // sell an amount of some token (externally)\n\n Trade, // trade tokens against another account\n\n Liquidate, // liquidate an undercollateralized or expiring account\n\n Vaporize, // use excess tokens to zero-out a completely negative account\n\n Call // send arbitrary data to an address\n\n }\n\n\n\n enum AccountLayout {\n\n OnePrimary,\n\n TwoPrimary,\n\n PrimaryAndSecondary\n\n }\n\n\n\n enum MarketLayout {\n\n ZeroMarkets,\n\n OneMarket,\n\n TwoMarkets\n\n }\n\n\n\n // ============ Structs ============\n\n\n\n /*\n\n * Arguments that are passed to Solo in an ordered list as part of a single operation.\n\n * Each ActionArgs has an actionType which specifies which action struct that this data will be\n\n * parsed into before being processed.\n\n */\n\n struct ActionArgs {\n\n ActionType actionType;\n\n uint256 accountId;\n\n Types.AssetAmount amount;\n\n uint256 primaryMarketId;\n\n uint256 secondaryMarketId;\n\n address otherAddress;\n\n uint256 otherAccountId;\n\n bytes data;\n\n }\n\n\n\n // ============ Action Types ============\n\n\n\n /*\n\n * Moves tokens from an address to Solo. Can either repay a borrow or provide additional supply.\n\n */\n\n struct DepositArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 market;\n\n address from;\n\n }\n\n\n\n /*\n\n * Moves tokens from Solo to another address. Can either borrow tokens or reduce the amount\n\n * previously supplied.\n\n */\n\n struct WithdrawArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 market;\n\n address to;\n\n }\n\n\n\n /*\n\n * Transfers balance between two accounts. The msg.sender must be an operator for both accounts.\n\n * The amount field applies to accountOne.\n\n * This action does not require any token movement since the trade is done internally to Solo.\n\n */\n\n struct TransferArgs {\n\n Types.AssetAmount amount;\n\n Account.Info accountOne;\n\n Account.Info accountTwo;\n\n uint256 market;\n\n }\n\n\n\n /*\n\n * Acquires a certain amount of tokens by spending other tokens. Sends takerMarket tokens to the\n\n * specified exchangeWrapper contract and expects makerMarket tokens in return. The amount field\n\n * applies to the makerMarket.\n\n */\n\n struct BuyArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 makerMarket;\n\n uint256 takerMarket;\n\n address exchangeWrapper;\n\n bytes orderData;\n\n }\n\n\n\n /*\n\n * Spends a certain amount of tokens to acquire other tokens. Sends takerMarket tokens to the\n\n * specified exchangeWrapper and expects makerMarket tokens in return. The amount field applies\n\n * to the takerMarket.\n\n */\n\n struct SellArgs {\n\n Types.AssetAmount amount;\n\n Account.Info account;\n\n uint256 takerMarket;\n\n uint256 makerMarket;\n\n address exchangeWrapper;\n\n bytes orderData;\n\n }\n\n\n\n /*\n\n * Trades balances between two accounts using any external contract that implements the\n\n * AutoTrader interface. The AutoTrader contract must be an operator for the makerAccount (for\n\n * which it is trading on-behalf-of). The amount field applies to the makerAccount and the\n\n * inputMarket. This proposed change to the makerAccount is passed to the AutoTrader which will\n\n * quote a change for the makerAccount in the outputMarket (or will disallow the trade).\n\n * This action does not require any token movement since the trade is done internally to Solo.\n\n */\n\n struct TradeArgs {\n\n Types.AssetAmount amount;\n\n Account.Info takerAccount;\n\n Account.Info makerAccount;\n\n uint256 inputMarket;\n\n uint256 outputMarket;\n\n address autoTrader;\n\n bytes tradeData;\n\n }\n\n\n\n /*\n\n * Each account must maintain a certain margin-ratio (specified globally). If the account falls\n\n * below this margin-ratio, it can be liquidated by any other account. This allows anyone else\n\n * (arbitrageurs) to repay any borrowed asset (owedMarket) of the liquidating account in\n\n * exchange for any collateral asset (heldMarket) of the liquidAccount. The ratio is determined\n\n * by the price ratio (given by the oracles) plus a spread (specified globally). Liquidating an\n\n * account also sets a flag on the account that the account is being liquidated. This allows\n\n * anyone to continue liquidating the account until there are no more borrows being taken by the\n\n * liquidating account. Liquidators do not have to liquidate the entire account all at once but\n\n * can liquidate as much as they choose. The liquidating flag allows liquidators to continue\n\n * liquidating the account even if it becomes collateralized through partial liquidation or\n\n * price movement.\n\n */\n\n struct LiquidateArgs {\n\n Types.AssetAmount amount;\n\n Account.Info solidAccount;\n\n Account.Info liquidAccount;\n\n uint256 owedMarket;\n\n uint256 heldMarket;\n\n }\n\n\n\n /*\n\n * Similar to liquidate, but vaporAccounts are accounts that have only negative balances\n\n * remaining. The arbitrageur pays back the negative asset (owedMarket) of the vaporAccount in\n\n * exchange for a collateral asset (heldMarket) at a favorable spread. However, since the\n\n * liquidAccount has no collateral assets, the collateral must come from Solo's excess tokens.\n\n */\n\n struct VaporizeArgs {\n\n Types.AssetAmount amount;\n\n Account.Info solidAccount;\n\n Account.Info vaporAccount;\n\n uint256 owedMarket;\n\n uint256 heldMarket;\n\n }\n\n\n\n /*\n\n * Passes arbitrary bytes of data to an external contract that implements the Callee interface.\n\n * Does not change any asset amounts. This function may be useful for setting certain variables\n\n * on layer-two contracts for certain accounts without having to make a separate Ethereum\n\n * transaction for doing so. Also, the second-layer contracts can ensure that the call is coming\n\n * from an operator of the particular account.\n\n */\n\n struct CallArgs {\n\n Account.Info account;\n\n address callee;\n\n bytes data;\n\n }\n\n\n\n // ============ Helper Functions ============\n\n\n\n function getMarketLayout(\n\n ActionType actionType\n\n )\n\n internal\n\n pure\n\n returns (MarketLayout)\n\n {\n\n if (\n\n actionType == Actions.ActionType.Deposit\n\n || actionType == Actions.ActionType.Withdraw\n\n || actionType == Actions.ActionType.Transfer\n\n ) {\n\n return MarketLayout.OneMarket;\n\n }\n\n else if (actionType == Actions.ActionType.Call) {\n\n return MarketLayout.ZeroMarkets;\n\n }\n\n return MarketLayout.TwoMarkets;\n\n }\n\n\n\n function getAccountLayout(\n\n ActionType actionType\n\n )\n\n internal\n\n pure\n\n returns (AccountLayout)\n\n {\n\n if (\n\n actionType == Actions.ActionType.Transfer\n\n || actionType == Actions.ActionType.Trade\n\n ) {\n\n return AccountLayout.TwoPrimary;\n\n } else if (\n\n actionType == Actions.ActionType.Liquidate\n\n || actionType == Actions.ActionType.Vaporize\n\n ) {\n\n return AccountLayout.PrimaryAndSecondary;\n\n }\n\n return AccountLayout.OnePrimary;\n\n }\n\n\n\n // ============ Parsing Functions ============\n\n\n\n function parseDepositArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (DepositArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Deposit);\n\n return DepositArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n market: args.primaryMarketId,\n\n from: args.otherAddress\n\n });\n\n }\n\n\n\n function parseWithdrawArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (WithdrawArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Withdraw);\n\n return WithdrawArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n market: args.primaryMarketId,\n\n to: args.otherAddress\n\n });\n\n }\n\n\n\n function parseTransferArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (TransferArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Transfer);\n\n return TransferArgs({\n\n amount: args.amount,\n\n accountOne: accounts[args.accountId],\n\n accountTwo: accounts[args.otherAccountId],\n\n market: args.primaryMarketId\n\n });\n\n }\n\n\n\n function parseBuyArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (BuyArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Buy);\n\n return BuyArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n makerMarket: args.primaryMarketId,\n\n takerMarket: args.secondaryMarketId,\n\n exchangeWrapper: args.otherAddress,\n\n orderData: args.data\n\n });\n\n }\n\n\n\n function parseSellArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (SellArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Sell);\n\n return SellArgs({\n\n amount: args.amount,\n\n account: accounts[args.accountId],\n\n takerMarket: args.primaryMarketId,\n\n makerMarket: args.secondaryMarketId,\n\n exchangeWrapper: args.otherAddress,\n\n orderData: args.data\n\n });\n\n }\n\n\n\n function parseTradeArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (TradeArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Trade);\n\n return TradeArgs({\n\n amount: args.amount,\n\n takerAccount: accounts[args.accountId],\n\n makerAccount: accounts[args.otherAccountId],\n\n inputMarket: args.primaryMarketId,\n\n outputMarket: args.secondaryMarketId,\n\n autoTrader: args.otherAddress,\n\n tradeData: args.data\n\n });\n\n }\n\n\n\n function parseLiquidateArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (LiquidateArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Liquidate);\n\n return LiquidateArgs({\n\n amount: args.amount,\n\n solidAccount: accounts[args.accountId],\n\n liquidAccount: accounts[args.otherAccountId],\n\n owedMarket: args.primaryMarketId,\n\n heldMarket: args.secondaryMarketId\n\n });\n\n }\n\n\n\n function parseVaporizeArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (VaporizeArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Vaporize);\n\n return VaporizeArgs({\n\n amount: args.amount,\n\n solidAccount: accounts[args.accountId],\n\n vaporAccount: accounts[args.otherAccountId],\n\n owedMarket: args.primaryMarketId,\n\n heldMarket: args.secondaryMarketId\n\n });\n\n }\n\n\n\n function parseCallArgs(\n\n Account.Info[] memory accounts,\n\n ActionArgs memory args\n\n )\n\n internal\n\n pure\n\n returns (CallArgs memory)\n\n {\n\n assert(args.actionType == ActionType.Call);\n\n return CallArgs({\n\n account: accounts[args.accountId],\n\n callee: args.otherAddress,\n\n data: args.data\n\n });\n\n }\n\n}\n\nlibrary Math {\n\n using SafeMath for uint256;\n\n\n\n // ============ Constants ============\n\n\n\n bytes32 constant FILE = \"Math\";\n\n\n\n // ============ Library Functions ============\n\n\n\n /*\n\n * Return target * (numerator / denominator).\n\n */\n\n function getPartial(\n\n uint256 target,\n\n uint256 numerator,\n\n uint256 denominator\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return target.mul(numerator).div(denominator);\n\n }\n\n\n\n /*\n\n * Return target * (numerator / denominator), but rounded up.\n\n */\n\n function getPartialRoundUp(\n\n uint256 target,\n\n uint256 numerator,\n\n uint256 denominator\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n if (target == 0 || numerator == 0) {\n\n // SafeMath will check for zero denominator\n\n return SafeMath.div(0, denominator);\n\n }\n\n return target.mul(numerator).sub(1).div(denominator).add(1);\n\n }\n\n\n\n function to128(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint128)\n\n {\n\n uint128 result = uint128(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint128\"\n\n );\n\n return result;\n\n }\n\n\n\n function to96(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint96)\n\n {\n\n uint96 result = uint96(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint96\"\n\n );\n\n return result;\n\n }\n\n\n\n function to32(\n\n uint256 number\n\n )\n\n internal\n\n pure\n\n returns (uint32)\n\n {\n\n uint32 result = uint32(number);\n\n Require.that(\n\n result == number,\n\n FILE,\n\n \"Unsafe cast to uint32\"\n\n );\n\n return result;\n\n }\n\n\n\n function min(\n\n uint256 a,\n\n uint256 b\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return a < b ? a : b;\n\n }\n\n\n\n function max(\n\n uint256 a,\n\n uint256 b\n\n )\n\n internal\n\n pure\n\n returns (uint256)\n\n {\n\n return a > b ? a : b;\n\n }\n\n}\n\nlibrary Require {\n\n\n\n // ============ Constants ============\n\n\n\n uint256 constant ASCII_ZERO = 48; // '0'\n\n uint256 constant ASCII_RELATIVE_ZERO = 87; // 'a' - 10\n\n uint256 constant ASCII_LOWER_EX = 120; // 'x'\n\n bytes2 constant COLON = 0x3a20; // ': '\n\n bytes2 constant COMMA = 0x2c20; // ', '\n\n bytes2 constant LPAREN = 0x203c; // ' <'\n\n byte constant RPAREN = 0x3e; // '>'\n\n uint256 constant FOUR_BIT_MASK = 0xf;\n\n\n\n // ============ Library Functions ============\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason)\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n uint256 payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n uint256 payloadA,\n\n uint256 payloadB\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA,\n\n uint256 payloadB\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n address payloadA,\n\n uint256 payloadB,\n\n uint256 payloadC\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n COMMA,\n\n stringify(payloadC),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n bytes32 payloadA\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n function that(\n\n bool must,\n\n bytes32 file,\n\n bytes32 reason,\n\n bytes32 payloadA,\n\n uint256 payloadB,\n\n uint256 payloadC\n\n )\n\n internal\n\n pure\n\n {\n\n if (!must) {\n\n revert(\n\n string(\n\n abi.encodePacked(\n\n stringifyTruncated(file),\n\n COLON,\n\n stringifyTruncated(reason),\n\n LPAREN,\n\n stringify(payloadA),\n\n COMMA,\n\n stringify(payloadB),\n\n COMMA,\n\n stringify(payloadC),\n\n RPAREN\n\n )\n\n )\n\n );\n\n }\n\n }\n\n\n\n // ============ Private Functions ============\n\n\n\n function stringifyTruncated(\n\n bytes32 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n // put the input bytes into the result\n\n bytes memory result = abi.encodePacked(input);\n\n\n\n // determine the length of the input by finding the location of the last non-zero byte\n\n for (uint256 i = 32; i > 0; ) {\n\n // reverse-for-loops with unsigned integer\n\n /* solium-disable-next-line security/no-modify-for-iter-var */\n\n i--;\n\n\n\n // find the last non-zero byte in order to determine the length\n\n if (result[i] != 0) {\n\n uint256 length = i + 1;\n\n\n\n /* solium-disable-next-line security/no-inline-assembly */\n\n assembly {\n\n mstore(result, length) // r.length = length;\n\n }\n\n\n\n return result;\n\n }\n\n }\n\n\n\n // all bytes are zero\n\n return new bytes(0);\n\n }\n\n\n\n function stringify(\n\n uint256 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n if (input == 0) {\n\n return \"0\";\n\n }\n\n\n\n // get the final string length\n\n uint256 j = input;\n\n uint256 length;\n\n while (j != 0) {\n\n length++;\n\n j /= 10;\n\n }\n\n\n\n // allocate the string\n\n bytes memory bstr = new bytes(length);\n\n\n\n // populate the string starting with the least-significant character\n\n j = input;\n\n for (uint256 i = length; i > 0; ) {\n\n // reverse-for-loops with unsigned integer\n\n /* solium-disable-next-line security/no-modify-for-iter-var */\n\n i--;\n\n\n\n // take last decimal digit\n\n bstr[i] = byte(uint8(ASCII_ZERO + (j % 10)));\n\n\n\n // remove the last decimal digit\n\n j /= 10;\n\n }\n\n\n\n return bstr;\n\n }\n\n\n\n function stringify(\n\n address input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n uint256 z = uint256(input);\n\n\n\n // addresses are \"0x\" followed by 20 bytes of data which take up 2 characters each\n\n bytes memory result = new bytes(42);\n\n\n\n // populate the result with \"0x\"\n\n result[0] = byte(uint8(ASCII_ZERO));\n\n result[1] = byte(uint8(ASCII_LOWER_EX));\n\n\n\n // for each byte (starting from the lowest byte), populate the result with two characters\n\n for (uint256 i = 0; i < 20; i++) {\n\n // each byte takes two characters\n\n uint256 shift = i * 2;\n\n\n\n // populate the least-significant character\n\n result[41 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n\n\n // populate the most-significant character\n\n result[40 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n }\n\n\n\n return result;\n\n }\n\n\n\n function stringify(\n\n bytes32 input\n\n )\n\n private\n\n pure\n\n returns (bytes memory)\n\n {\n\n uint256 z = uint256(input);\n\n\n\n // bytes32 are \"0x\" followed by 32 bytes of data which take up 2 characters each\n\n bytes memory result = new bytes(66);\n\n\n\n // populate the result with \"0x\"\n\n result[0] = byte(uint8(ASCII_ZERO));\n\n result[1] = byte(uint8(ASCII_LOWER_EX));\n\n\n\n // for each byte (starting from the lowest byte), populate the result with two characters\n\n for (uint256 i = 0; i < 32; i++) {\n\n // each byte takes two characters\n\n uint256 shift = i * 2;\n\n\n\n // populate the least-significant character\n\n result[65 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n\n\n // populate the most-significant character\n\n result[64 - shift] = char(z & FOUR_BIT_MASK);\n\n z = z >> 4;\n\n }\n\n\n\n return result;\n\n }\n\n\n\n function char(\n\n uint256 input\n\n )\n\n private\n\n pure\n\n returns (byte)\n\n {\n\n // return ASCII digit (0-9)\n\n if (input < 10) {\n\n return byte(uint8(input + ASCII_ZERO));\n\n }\n\n\n\n // return ASCII letter (a-f)\n\n return byte(uint8(input + ASCII_RELATIVE_ZERO));\n\n }\n\n}\n\nlibrary Types {\n\n using Math for uint256;\n\n\n\n // ============ AssetAmount ============\n\n\n\n enum AssetDenomination {\n\n Wei, // the amount is denominated in wei\n\n Par // the amount is denominated in par\n\n }\n\n\n\n enum AssetReference {\n\n Delta, // the amount is given as a delta from the current value\n\n Target // the amount is given as an exact number to end up at\n\n }\n\n\n\n struct AssetAmount {\n\n bool sign; // true if positive\n\n AssetDenomination denomination;\n\n AssetReference ref;\n\n uint256 value;\n\n }\n\n\n\n // ============ Par (Principal Amount) ============\n\n\n\n // Total borrow and supply values for a market\n\n struct TotalPar {\n\n uint128 borrow;\n\n uint128 supply;\n\n }\n\n\n\n // Individual principal amount for an account\n\n struct Par {\n\n bool sign; // true if positive\n\n uint128 value;\n\n }\n\n\n\n function zeroPar()\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return Par({\n\n sign: false,\n\n value: 0\n\n });\n\n }\n\n\n\n function sub(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return add(a, negative(b));\n\n }\n\n\n\n function add(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n Par memory result;\n\n if (a.sign == b.sign) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.add(a.value, b.value).to128();\n\n } else {\n\n if (a.value >= b.value) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.sub(a.value, b.value).to128();\n\n } else {\n\n result.sign = b.sign;\n\n result.value = SafeMath.sub(b.value, a.value).to128();\n\n }\n\n }\n\n return result;\n\n }\n\n\n\n function equals(\n\n Par memory a,\n\n Par memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n if (a.value == b.value) {\n\n if (a.value == 0) {\n\n return true;\n\n }\n\n return a.sign == b.sign;\n\n }\n\n return false;\n\n }\n\n\n\n function negative(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (Par memory)\n\n {\n\n return Par({\n\n sign: !a.sign,\n\n value: a.value\n\n });\n\n }\n\n\n\n function isNegative(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return !a.sign && a.value > 0;\n\n }\n\n\n\n function isPositive(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.sign && a.value > 0;\n\n }\n\n\n\n function isZero(\n\n Par memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.value == 0;\n\n }\n\n\n\n // ============ Wei (Token Amount) ============\n\n\n\n // Individual token amount for an account\n\n struct Wei {\n\n bool sign; // true if positive\n\n uint256 value;\n\n }\n\n\n\n function zeroWei()\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return Wei({\n\n sign: false,\n\n value: 0\n\n });\n\n }\n\n\n\n function sub(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return add(a, negative(b));\n\n }\n\n\n\n function add(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n Wei memory result;\n\n if (a.sign == b.sign) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.add(a.value, b.value);\n\n } else {\n\n if (a.value >= b.value) {\n\n result.sign = a.sign;\n\n result.value = SafeMath.sub(a.value, b.value);\n\n } else {\n\n result.sign = b.sign;\n\n result.value = SafeMath.sub(b.value, a.value);\n\n }\n\n }\n\n return result;\n\n }\n\n\n\n function equals(\n\n Wei memory a,\n\n Wei memory b\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n if (a.value == b.value) {\n\n if (a.value == 0) {\n\n return true;\n\n }\n\n return a.sign == b.sign;\n\n }\n\n return false;\n\n }\n\n\n\n function negative(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (Wei memory)\n\n {\n\n return Wei({\n\n sign: !a.sign,\n\n value: a.value\n\n });\n\n }\n\n\n\n function isNegative(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return !a.sign && a.value > 0;\n\n }\n\n\n\n function isPositive(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.sign && a.value > 0;\n\n }\n\n\n\n function isZero(\n\n Wei memory a\n\n )\n\n internal\n\n pure\n\n returns (bool)\n\n {\n\n return a.value == 0;\n\n }\n\n}\n\ncontract FulcrumSavingsProtocol is ProtocolInterface, DSAuth {\n\n\n\n address public constant NEW_IDAI_ADDRESS = 0x493C57C4763932315A328269E1ADaD09653B9081;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public savingsProxy;\n\n uint public decimals = 10 ** 18;\n\n\n\n function addSavingsProxy(address _savingsProxy) public auth {\n\n savingsProxy = _savingsProxy;\n\n }\n\n\n\n function deposit(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n // get dai from user\n\n require(ERC20(DAI_ADDRESS).transferFrom(_user, address(this), _amount));\n\n\n\n // approve dai to Fulcrum\n\n ERC20(DAI_ADDRESS).approve(NEW_IDAI_ADDRESS, uint(-1));\n\n\n\n // mint iDai\n\n ITokenInterface(NEW_IDAI_ADDRESS).mint(_user, _amount);\n\n }\n\n\n\n function withdraw(address _user, uint _amount) public override {\n\n require(msg.sender == _user);\n\n\n\n // transfer all users tokens to our contract\n\n require(ERC20(NEW_IDAI_ADDRESS).transferFrom(_user, address(this), ITokenInterface(NEW_IDAI_ADDRESS).balanceOf(_user)));\n\n\n\n // approve iDai to that contract\n\n ERC20(NEW_IDAI_ADDRESS).approve(NEW_IDAI_ADDRESS, uint(-1));\n\n uint tokenPrice = ITokenInterface(NEW_IDAI_ADDRESS).tokenPrice();\n\n\n\n // get dai from iDai contract\n\n ITokenInterface(NEW_IDAI_ADDRESS).burn(_user, _amount * decimals / tokenPrice);\n\n\n\n // return all remaining tokens back to user\n\n require(ERC20(NEW_IDAI_ADDRESS).transfer(_user, ITokenInterface(NEW_IDAI_ADDRESS).balanceOf(address(this))));\n\n }\n\n}\n\ncontract ShifterRegistry is AdminAuth {\n\n mapping (string => address) public contractAddresses;\n\n bool public finalized;\n\n\n\n function changeContractAddr(string memory _contractName, address _protoAddr) public onlyOwner {\n\n require(!finalized);\n\n contractAddresses[_contractName] = _protoAddr;\n\n }\n\n\n\n function lock() public onlyOwner {\n\n finalized = true;\n\n }\n\n\n\n function getAddr(string memory _contractName) public view returns (address contractAddr) {\n\n contractAddr = contractAddresses[_contractName];\n\n\n\n require(contractAddr != address(0), \"No contract address registred\");\n\n }\n\n\n\n}\n\nlibrary Address {\n\n function isContract(address account) internal view returns (bool) {\n\n // According to EIP-1052, 0x0 is the value returned for not-yet created accounts\n\n // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned\n\n // for accounts without code, i.e. `keccak256('')`\n\n bytes32 codehash;\n\n bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly { codehash := extcodehash(account) }\n\n return (codehash != accountHash && codehash != 0x0);\n\n }\n\n\n\n function sendValue(address payable recipient, uint256 amount) internal {\n\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n\n (bool success, ) = recipient.call{ value: amount }(\"\");\n\n require(success, \"Address: unable to send value, recipient may have reverted\");\n\n }\n\n\n\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n\n return functionCall(target, data, \"Address: low-level call failed\");\n\n }\n\n\n\n function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n\n return _functionCallWithValue(target, data, 0, errorMessage);\n\n }\n\n\n\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n\n }\n\n\n\n function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\n\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n\n return _functionCallWithValue(target, data, value, errorMessage);\n\n }\n\n\n\n function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\n\n require(isContract(target), \"Address: call to non-contract\");\n\n\n\n // solhint-disable-next-line avoid-low-level-calls\n\n (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\n\n if (success) {\n\n return returndata;\n\n } else {\n\n // Look for revert reason and bubble it up if present\n\n if (returndata.length > 0) {\n\n // The easiest way to bubble the revert reason is using memory via assembly\n\n\n\n // solhint-disable-next-line no-inline-assembly\n\n assembly {\n\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n\n }\n\n } else {\n\n revert(errorMessage);\n\n }\n\n }\n\n }\n\n}\n\ncontract BotRegistry is AdminAuth {\n\n\n\n mapping (address => bool) public botList;\n\n\n\n constructor() public {\n\n botList[0x776B4a13093e30B05781F97F6A4565B6aa8BE330] = true;\n\n\n\n botList[0xAED662abcC4FA3314985E67Ea993CAD064a7F5cF] = true;\n\n botList[0xa5d330F6619d6bF892A5B87D80272e1607b3e34D] = true;\n\n botList[0x5feB4DeE5150B589a7f567EA7CADa2759794A90A] = true;\n\n botList[0x7ca06417c1d6f480d3bB195B80692F95A6B66158] = true;\n\n }\n\n\n\n function setBot(address _botAddr, bool _state) public onlyOwner {\n\n botList[_botAddr] = _state;\n\n }\n\n\n\n}\n\ncontract DFSProxy is Auth {\n\n string public constant NAME = \"DFSProxy\";\n\n string public constant VERSION = \"v0.1\";\n\n\n\n mapping(address => mapping(uint => bool)) public nonces;\n\n\n\n // --- EIP712 niceties ---\n\n bytes32 public DOMAIN_SEPARATOR;\n\n bytes32 public constant PERMIT_TYPEHASH = keccak256(\"callProxy(address _user,address _proxy,address _contract,bytes _txData,uint256 _nonce)\");\n\n\n\n constructor(uint256 chainId_) public {\n\n DOMAIN_SEPARATOR = keccak256(abi.encode(\n\n keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"),\n\n keccak256(bytes(NAME)),\n\n keccak256(bytes(VERSION)),\n\n chainId_,\n\n address(this)\n\n ));\n\n }\n\n\n\n function callProxy(address _user, address _proxy, address _contract, bytes calldata _txData, uint256 _nonce,\n\n uint8 _v, bytes32 _r, bytes32 _s) external payable onlyAuthorized\n\n {\n\n bytes32 digest =\n\n keccak256(abi.encodePacked(\n\n \"\\x19\\x01\",\n\n DOMAIN_SEPARATOR,\n\n keccak256(abi.encode(PERMIT_TYPEHASH,\n\n _user,\n\n _proxy,\n\n _contract,\n\n _txData,\n\n _nonce))\n\n ));\n\n\n\n // user must be proxy owner\n\n require(DSProxyInterface(_proxy).owner() == _user);\n\n require(_user == ecrecover(digest, _v, _r, _s), \"DFSProxy/user-not-valid\");\n\n require(!nonces[_user][_nonce], \"DFSProxy/invalid-nonce\");\n\n \n\n nonces[_user][_nonce] = true;\n\n\n\n DSProxyInterface(_proxy).execute{value: msg.value}(_contract, _txData);\n\n }\n\n}\n\ncontract Discount {\n\n address public owner;\n\n mapping(address => CustomServiceFee) public serviceFees;\n\n\n\n uint256 constant MAX_SERVICE_FEE = 400;\n\n\n\n struct CustomServiceFee {\n\n bool active;\n\n uint256 amount;\n\n }\n\n\n\n constructor() public {\n\n owner = msg.sender;\n\n }\n\n\n\n function isCustomFeeSet(address _user) public view returns (bool) {\n\n return serviceFees[_user].active;\n\n }\n\n\n\n function getCustomServiceFee(address _user) public view returns (uint256) {\n\n return serviceFees[_user].amount;\n\n }\n\n\n\n function setServiceFee(address _user, uint256 _fee) public {\n\n require(msg.sender == owner, \"Only owner\");\n\n require(_fee >= MAX_SERVICE_FEE || _fee == 0);\n\n\n\n serviceFees[_user] = CustomServiceFee({active: true, amount: _fee});\n\n }\n\n\n\n function disableServiceFee(address _user) public {\n\n require(msg.sender == owner, \"Only owner\");\n\n\n\n serviceFees[_user] = CustomServiceFee({active: false, amount: 0});\n\n }\n\n}\n\ncontract DydxFlashLoanBase {\n\n using SafeMath for uint256;\n\n\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n function _getMarketIdFromTokenAddress(address token)\n\n internal\n\n view\n\n returns (uint256)\n\n {\n\n return 0;\n\n }\n\n\n\n function _getRepaymentAmountInternal(uint256 amount)\n\n internal\n\n view\n\n returns (uint256)\n\n {\n\n // Needs to be overcollateralize\n\n // Needs to provide +2 wei to be safe\n\n return amount.add(2);\n\n }\n\n\n\n function _getAccountInfo() internal view returns (Account.Info memory) {\n\n return Account.Info({owner: address(this), number: 1});\n\n }\n\n\n\n function _getWithdrawAction(uint marketId, uint256 amount, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Withdraw,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: amount\n\n }),\n\n primaryMarketId: marketId,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: \"\"\n\n });\n\n }\n\n\n\n function _getCallAction(bytes memory data, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Call,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: false,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: 0\n\n }),\n\n primaryMarketId: 0,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: data\n\n });\n\n }\n\n\n\n function _getDepositAction(uint marketId, uint256 amount, address contractAddr)\n\n internal\n\n view\n\n returns (Actions.ActionArgs memory)\n\n {\n\n return\n\n Actions.ActionArgs({\n\n actionType: Actions.ActionType.Deposit,\n\n accountId: 0,\n\n amount: Types.AssetAmount({\n\n sign: true,\n\n denomination: Types.AssetDenomination.Wei,\n\n ref: Types.AssetReference.Delta,\n\n value: amount\n\n }),\n\n primaryMarketId: marketId,\n\n secondaryMarketId: 0,\n\n otherAddress: contractAddr,\n\n otherAccountId: 0,\n\n data: \"\"\n\n });\n\n }\n\n}\n\ncontract ExchangeDataParser {\n\n function decodeExchangeData(\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (address[4] memory, uint[4] memory, bytes memory) {\n\n return (\n\n [exchangeData.srcAddr, exchangeData.destAddr, exchangeData.exchangeAddr, exchangeData.wrapper],\n\n [exchangeData.srcAmount, exchangeData.destAmount, exchangeData.minPrice, exchangeData.price0x],\n\n exchangeData.callData\n\n );\n\n }\n\n\n\n function encodeExchangeData(\n\n address[4] memory exAddr, uint[4] memory exNum, bytes memory callData\n\n ) internal pure returns (SaverExchangeCore.ExchangeData memory) {\n\n return SaverExchangeCore.ExchangeData({\n\n srcAddr: exAddr[0],\n\n destAddr: exAddr[1],\n\n srcAmount: exNum[0],\n\n destAmount: exNum[1],\n\n minPrice: exNum[2],\n\n wrapper: exAddr[3],\n\n exchangeAddr: exAddr[2],\n\n callData: callData,\n\n price0x: exNum[3]\n\n });\n\n }\n\n}\n\ninterface IFlashLoanReceiver {\n\n function executeOperation(address _reserve, uint256 _amount, uint256 _fee, bytes calldata _params) external;\n\n}\n\nabstract contract ILendingPoolAddressesProvider {\n\n\n\n function getLendingPool() public view virtual returns (address);\n\n function setLendingPoolImpl(address _pool) public virtual;\n\n\n\n function getLendingPoolCore() public virtual view returns (address payable);\n\n function setLendingPoolCoreImpl(address _lendingPoolCore) public virtual;\n\n\n\n function getLendingPoolConfigurator() public virtual view returns (address);\n\n function setLendingPoolConfiguratorImpl(address _configurator) public virtual;\n\n\n\n function getLendingPoolDataProvider() public virtual view returns (address);\n\n function setLendingPoolDataProviderImpl(address _provider) public virtual;\n\n\n\n function getLendingPoolParametersProvider() public virtual view returns (address);\n\n function setLendingPoolParametersProviderImpl(address _parametersProvider) public virtual;\n\n\n\n function getTokenDistributor() public virtual view returns (address);\n\n function setTokenDistributor(address _tokenDistributor) public virtual;\n\n\n\n\n\n function getFeeProvider() public virtual view returns (address);\n\n function setFeeProviderImpl(address _feeProvider) public virtual;\n\n\n\n function getLendingPoolLiquidationManager() public virtual view returns (address);\n\n function setLendingPoolLiquidationManager(address _manager) public virtual;\n\n\n\n function getLendingPoolManager() public virtual view returns (address);\n\n function setLendingPoolManager(address _lendingPoolManager) public virtual;\n\n\n\n function getPriceOracle() public virtual view returns (address);\n\n function setPriceOracle(address _priceOracle) public virtual;\n\n\n\n function getLendingRateOracle() public view virtual returns (address);\n\n function setLendingRateOracle(address _lendingRateOracle) public virtual;\n\n}\n\nlibrary EthAddressLib {\n\n\n\n function ethAddress() internal pure returns(address) {\n\n return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n }\n\n}\n\nabstract contract FlashLoanReceiverBase is IFlashLoanReceiver {\n\n\n\n using SafeERC20 for ERC20;\n\n using SafeMath for uint256;\n\n\n\n ILendingPoolAddressesProvider public addressesProvider;\n\n\n\n constructor(ILendingPoolAddressesProvider _provider) public {\n\n addressesProvider = _provider;\n\n }\n\n\n\n receive () external virtual payable {}\n\n\n\n function transferFundsBackToPoolInternal(address _reserve, uint256 _amount) internal {\n\n\n\n address payable core = addressesProvider.getLendingPoolCore();\n\n\n\n transferInternal(core,_reserve, _amount);\n\n }\n\n\n\n function transferInternal(address payable _destination, address _reserve, uint256 _amount) internal {\n\n if(_reserve == EthAddressLib.ethAddress()) {\n\n //solium-disable-next-line\n\n _destination.call{value: _amount}(\"\");\n\n return;\n\n }\n\n\n\n ERC20(_reserve).safeTransfer(_destination, _amount);\n\n\n\n\n\n }\n\n\n\n function getBalanceInternal(address _target, address _reserve) internal view returns(uint256) {\n\n if(_reserve == EthAddressLib.ethAddress()) {\n\n\n\n return _target.balance;\n\n }\n\n\n\n return ERC20(_reserve).balanceOf(_target);\n\n\n\n }\n\n}\n\ncontract GasBurner {\n\n // solhint-disable-next-line const-name-snakecase\n\n GasTokenInterface public constant gasToken = GasTokenInterface(0x0000000000b3F879cb30FE243b4Dfee438691c04);\n\n\n\n modifier burnGas(uint _amount) {\n\n if (gasToken.balanceOf(address(this)) >= _amount) {\n\n gasToken.free(_amount);\n\n }\n\n\n\n _;\n\n }\n\n}\n\nlibrary SafeERC20 {\n\n using SafeMath for uint256;\n\n using Address for address;\n\n\n\n function safeTransfer(ERC20 token, address to, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n\n }\n\n\n\n function safeTransferFrom(ERC20 token, address from, address to, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n\n }\n\n\n\n /**\n\n * @dev Deprecated. This function has issues similar to the ones found in\n\n * {IERC20-approve}, and its usage is discouraged.\n\n */\n\n function safeApprove(ERC20 token, address spender, uint256 value) internal {\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n\n }\n\n\n\n function safeIncreaseAllowance(ERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).add(value);\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n function safeDecreaseAllowance(ERC20 token, address spender, uint256 value) internal {\n\n uint256 newAllowance = token.allowance(address(this), spender).sub(value, \"SafeERC20: decreased allowance below zero\");\n\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n\n }\n\n\n\n function _callOptionalReturn(ERC20 token, bytes memory data) private {\n\n\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n\n if (returndata.length > 0) { // Return data is optional\n\n // solhint-disable-next-line max-line-length\n\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n\n }\n\n }\n\n}\n\nlibrary SafeMath {\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n\n\n return c;\n\n }\n\n\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return sub(a, b, \"SafeMath: subtraction overflow\");\n\n }\n\n\n\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n\n\n return c;\n\n }\n\n\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n\n // benefit is lost if 'b' is also tested.\n\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n\n if (a == 0) {\n\n return 0;\n\n }\n\n\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n\n\n return c;\n\n }\n\n\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return div(a, b, \"SafeMath: division by zero\");\n\n }\n\n\n\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n\n\n return c;\n\n }\n\n\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n\n return mod(a, b, \"SafeMath: modulo by zero\");\n\n }\n\n\n\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n\n require(b != 0, errorMessage);\n\n return a % b;\n\n }\n\n}\n\ncontract ZrxAllowlist is AdminAuth {\n\n\n\n mapping (address => bool) public zrxAllowlist;\n\n mapping(address => bool) private nonPayableAddrs;\n\n\n\n constructor() public {\n\n zrxAllowlist[0x6958F5e95332D93D21af0D7B9Ca85B8212fEE0A5] = true;\n\n zrxAllowlist[0x61935CbDd02287B511119DDb11Aeb42F1593b7Ef] = true;\n\n zrxAllowlist[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;\n\n zrxAllowlist[0x080bf510FCbF18b91105470639e9561022937712] = true;\n\n\n\n nonPayableAddrs[0x080bf510FCbF18b91105470639e9561022937712] = true;\n\n }\n\n\n\n function setAllowlistAddr(address _zrxAddr, bool _state) public onlyOwner {\n\n zrxAllowlist[_zrxAddr] = _state;\n\n }\n\n\n\n function isZrxAddr(address _zrxAddr) public view returns (bool) {\n\n return zrxAllowlist[_zrxAddr];\n\n }\n\n\n\n function addNonPayableAddr(address _nonPayableAddr) public onlyOwner {\n\n\t\tnonPayableAddrs[_nonPayableAddr] = true;\n\n\t}\n\n\n\n\tfunction removeNonPayableAddr(address _nonPayableAddr) public onlyOwner {\n\n\t\tnonPayableAddrs[_nonPayableAddr] = false;\n\n\t}\n\n\n\n\tfunction isNonPayableAddr(address _addr) public view returns(bool) {\n\n\t\treturn nonPayableAddrs[_addr];\n\n\t}\n\n}\n\ncontract AaveBasicProxy is GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant AAVE_LENDING_POOL_ADDRESSES = 0x24a42fD28C976A61Df5D00D0599C34c4f90748c8;\n\n\n\n uint16 public constant AAVE_REFERRAL_CODE = 64;\n\n\n\n /// @notice User deposits tokens to the Aave protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n function deposit(address _tokenAddr, uint256 _amount) public burnGas(5) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint ethValue = _amount;\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n ethValue = 0;\n\n }\n\n\n\n ILendingPool(lendingPool).deposit{value: ethValue}(_tokenAddr, _amount, AAVE_REFERRAL_CODE);\n\n\n\n setUserUseReserveAsCollateralIfNeeded(_tokenAddr);\n\n }\n\n\n\n /// @notice User withdraws tokens from the Aave protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _aTokenAddr ATokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _wholeAmount If true we will take the whole amount on chain\n\n function withdraw(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeAmount) public burnGas(8) {\n\n uint256 amount = _wholeAmount ? ERC20(_aTokenAddr).balanceOf(address(this)) : _amount;\n\n\n\n IAToken(_aTokenAddr).redeem(amount);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @notice User borrows tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _type Send 1 for variable rate and 2 for fixed rate\n\n function borrow(address _tokenAddr, uint256 _amount, uint256 _type) public burnGas(8) {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).borrow(_tokenAddr, _amount, _type, AAVE_REFERRAL_CODE);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _aTokenAddr ATokens to be paybacked\n\n /// @param _amount Amount of tokens to be payed back\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeDebt) public burnGas(3) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint256 amount = _amount;\n\n\n\n (,uint256 borrowAmount,,,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, address(this));\n\n\n\n if (_wholeDebt) {\n\n amount = borrowAmount + originationFee;\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), amount);\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n }\n\n\n\n ILendingPool(lendingPool).repay{value: msg.value}(_tokenAddr, amount, payable(address(this)));\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Aave protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _aTokenAddr ATokens to be paybacked\n\n /// @param _amount Amount of tokens to be payed back\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function paybackOnBehalf(address _tokenAddr, address _aTokenAddr, uint256 _amount, bool _wholeDebt, address payable _onBehalf) public burnGas(3) payable {\n\n address lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n uint256 amount = _amount;\n\n\n\n (,uint256 borrowAmount,,,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, _onBehalf);\n\n\n\n if (_wholeDebt) {\n\n amount = borrowAmount + originationFee;\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), amount);\n\n if (originationFee > 0) {\n\n ERC20(_tokenAddr).safeTransfer(_onBehalf, originationFee);\n\n }\n\n approveToken(_tokenAddr, lendingPoolCore);\n\n }\n\n\n\n ILendingPool(lendingPool).repay{value: msg.value}(_tokenAddr, amount, _onBehalf);\n\n\n\n withdrawTokens(_tokenAddr);\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n uint256 amount = _tokenAddr == ETH_ADDR ? address(this).balance : ERC20(_tokenAddr).balanceOf(address(this));\n\n\n\n if (amount > 0) {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, amount);\n\n } else {\n\n msg.sender.transfer(amount);\n\n }\n\n }\n\n }\n\n\n\n /// @notice Approves token contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _caller Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _caller) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_caller, uint256(-1));\n\n }\n\n }\n\n\n\n function setUserUseReserveAsCollateralIfNeeded(address _tokenAddr) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n (,,,,,,,,,bool collateralEnabled) = ILendingPool(lendingPool).getUserReserveData(_tokenAddr, address(this));\n\n\n\n if (!collateralEnabled) {\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_tokenAddr, true);\n\n }\n\n }\n\n\n\n function setUserUseReserveAsCollateral(address _tokenAddr, bool _true) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_tokenAddr, _true);\n\n }\n\n\n\n function swapBorrowRateMode(address _reserve) public {\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n ILendingPool(lendingPool).swapBorrowRateMode(_reserve);\n\n }\n\n}\n\ncontract AaveLoanInfo is AaveSafetyRatio {\n\n\n\n\tstruct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint256[] collAmounts;\n\n uint256[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address aTokenAddress;\n\n address underlyingTokenAddress;\n\n uint256 collateralFactor;\n\n uint256 price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n \taddress aTokenAddress;\n\n address underlyingTokenAddress;\n\n uint256 supplyRate;\n\n uint256 borrowRate;\n\n uint256 borrowRateStable;\n\n uint256 totalSupply;\n\n uint256 availableLiquidity;\n\n uint256 totalBorrow;\n\n uint256 collateralFactor;\n\n uint256 liquidationRatio;\n\n uint256 price;\n\n bool usageAsCollateralEnabled;\n\n }\n\n\n\n struct UserToken {\n\n address token;\n\n uint256 balance;\n\n uint256 borrows;\n\n uint256 borrowRateMode;\n\n bool enabledAsCollateral;\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint256) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches Aave prices for tokens\n\n /// @param _tokens Arr. of tokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _tokens) public view returns (uint256[] memory prices) {\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n prices = new uint[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; ++i) {\n\n prices[i] = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches Aave collateral factors for tokens\n\n /// @param _tokens Arr. of tokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _tokens) public view returns (uint256[] memory collFactors) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n collFactors = new uint256[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; ++i) {\n\n \t(,collFactors[i],,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_tokens[i]);\n\n }\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _tokens) public view returns (UserToken[] memory userTokens) {\n\n \taddress lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\n\n userTokens = new UserToken[](_tokens.length);\n\n\n\n for (uint256 i = 0; i < _tokens.length; i++) {\n\n address asset = _tokens[i];\n\n userTokens[i].token = asset;\n\n\n\n (userTokens[i].balance, userTokens[i].borrows,,userTokens[i].borrowRateMode,,,,,,userTokens[i].enabledAsCollateral) = ILendingPool(lendingPoolAddress).getUserReserveData(asset, _user);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for an aave user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint256[] memory ratios) {\n\n ratios = new uint256[](_users.length);\n\n\n\n for (uint256 i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about reserves\n\n /// @param _tokenAddresses Array of tokens addresses\n\n /// @return tokens Array of reserves infomartion\n\n function getTokensInfo(address[] memory _tokenAddresses) public view returns(TokenInfo[] memory tokens) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n \taddress priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n tokens = new TokenInfo[](_tokenAddresses.length);\n\n\n\n for (uint256 i = 0; i < _tokenAddresses.length; ++i) {\n\n \t(,uint256 ltv,,) = ILendingPool(lendingPoolCoreAddress).getReserveConfiguration(_tokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n aTokenAddress: ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(_tokenAddresses[i]),\n\n underlyingTokenAddress: _tokenAddresses[i],\n\n collateralFactor: ltv,\n\n price: IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about reserves\n\n /// @param _tokenAddresses Array of token addresses\n\n /// @return tokens Array of reserves infomartion\n\n function getFullTokensInfo(address[] memory _tokenAddresses) public view returns(TokenInfoFull[] memory tokens) {\n\n \taddress lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n \taddress priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n tokens = new TokenInfoFull[](_tokenAddresses.length);\n\n\n\n for (uint256 i = 0; i < _tokenAddresses.length; ++i) {\n\n \t(uint256 ltv, uint256 liqRatio,,, bool usageAsCollateralEnabled, bool borrowingEnabled, bool stableBorrowingEnabled,) = ILendingPool(lendingPoolAddress).getReserveConfigurationData(_tokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n \taTokenAddress: ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(_tokenAddresses[i]),\n\n underlyingTokenAddress: _tokenAddresses[i],\n\n supplyRate: ILendingPool(lendingPoolCoreAddress).getReserveCurrentLiquidityRate(_tokenAddresses[i]),\n\n borrowRate: borrowingEnabled ? ILendingPool(lendingPoolCoreAddress).getReserveCurrentVariableBorrowRate(_tokenAddresses[i]) : 0,\n\n borrowRateStable: stableBorrowingEnabled ? ILendingPool(lendingPoolCoreAddress).getReserveCurrentStableBorrowRate(_tokenAddresses[i]) : 0,\n\n totalSupply: ILendingPool(lendingPoolCoreAddress).getReserveTotalLiquidity(_tokenAddresses[i]),\n\n availableLiquidity: ILendingPool(lendingPoolCoreAddress).getReserveAvailableLiquidity(_tokenAddresses[i]),\n\n totalBorrow: ILendingPool(lendingPoolCoreAddress).getReserveTotalBorrowsVariable(_tokenAddresses[i]),\n\n collateralFactor: ltv,\n\n liquidationRatio: liqRatio,\n\n price: IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(_tokenAddresses[i]),\n\n usageAsCollateralEnabled: usageAsCollateralEnabled\n\n });\n\n }\n\n }\n\n\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in ether\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address lendingPoolAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n address priceOracleAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getPriceOracle();\n\n\n\n address[] memory reserves = ILendingPool(lendingPoolAddress).getReserves();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](reserves.length),\n\n borrowAddr: new address[](reserves.length),\n\n collAmounts: new uint[](reserves.length),\n\n borrowAmounts: new uint[](reserves.length)\n\n });\n\n\n\n uint64 collPos = 0;\n\n uint64 borrowPos = 0;\n\n\n\n for (uint64 i = 0; i < reserves.length; i++) {\n\n address reserve = reserves[i];\n\n\n\n (uint256 aTokenBalance, uint256 borrowBalance,,,,,,,,) = ILendingPool(lendingPoolAddress).getUserReserveData(reserve, _user);\n\n uint256 price = IPriceOracleGetterAave(priceOracleAddress).getAssetPrice(reserves[i]);\n\n\n\n if (aTokenBalance > 0) {\n\n \tuint256 userTokenBalanceEth = wmul(aTokenBalance, price) * (10 ** (18 - _getDecimals(reserve)));\n\n \tdata.collAddr[collPos] = reserve;\n\n data.collAmounts[collPos] = userTokenBalanceEth;\n\n collPos++;\n\n \t}\n\n\n\n // Sum up debt in Eth\n\n if (borrowBalance > 0) {\n\n \tuint256 userBorrowBalanceEth = wmul(borrowBalance, price) * (10 ** (18 - _getDecimals(reserve)));\n\n data.borrowAddr[borrowPos] = reserve;\n\n data.borrowAmounts[borrowPos] = userBorrowBalanceEth;\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in ether\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n}\n\ncontract AaveMonitor is AdminAuth, DSMath, AaveSafetyRatio, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n enum Method { Boost, Repay }\n\n\n\n uint public REPAY_GAS_TOKEN = 19;\n\n uint public BOOST_GAS_TOKEN = 19;\n\n\n\n uint public MAX_GAS_PRICE = 200000000000; // 200 gwei\n\n\n\n uint public REPAY_GAS_COST = 2500000;\n\n uint public BOOST_GAS_COST = 2500000;\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n AaveMonitorProxy public aaveMonitorProxy;\n\n AaveSubscriptions public subscriptionsContract;\n\n address public aaveSaverProxy;\n\n\n\n DefisaverLogger public logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n /// @param _aaveMonitorProxy Proxy contracts that actually is authorized to call DSProxy\n\n /// @param _subscriptions Subscriptions contract for Aave positions\n\n /// @param _aaveSaverProxy Contract that actually performs Repay/Boost\n\n constructor(address _aaveMonitorProxy, address _subscriptions, address _aaveSaverProxy) public {\n\n aaveMonitorProxy = AaveMonitorProxy(_aaveMonitorProxy);\n\n subscriptionsContract = AaveSubscriptions(_subscriptions);\n\n aaveSaverProxy = _aaveSaverProxy;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _user The actual address that owns the Aave position\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address _user\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n aaveMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n aaveSaverProxy,\n\n abi.encodeWithSignature(\n\n \"repay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\",\n\n _exData,\n\n gasCost\n\n )\n\n );\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticAaveRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _user The actual address that owns the Aave position\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address _user\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n aaveMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n aaveSaverProxy,\n\n abi.encodeWithSignature(\n\n \"boost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\",\n\n _exData,\n\n gasCost\n\n )\n\n );\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticAaveBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by AaveMonitor to enforce the min/max check\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Boolean if it can be called and the ratio\n\n function canCall(Method _method, address _user) public view returns(bool, uint) {\n\n bool subscribed = subscriptionsContract.isSubscribed(_user);\n\n AaveSubscriptions.AaveHolder memory holder = subscriptionsContract.getHolder(_user);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Boolean if the recent action preformed correctly and the ratio\n\n function ratioGoodAfter(Method _method, address _user) public view returns(bool, uint) {\n\n AaveSubscriptions.AaveHolder memory holder;\n\n\n\n holder= subscriptionsContract.getHolder(_user);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change max gas price\n\n /// @param _maxGasPrice New max gas price\n\n function changeMaxGasPrice(uint _maxGasPrice) public onlyOwner {\n\n require(_maxGasPrice < 500000000000);\n\n\n\n MAX_GAS_PRICE = _maxGasPrice;\n\n }\n\n\n\n /// @notice Allows owner to change gas token amount\n\n /// @param _gasTokenAmount New gas token amount\n\n /// @param _repay true if repay gas token, false if boost gas token\n\n function changeGasTokenAmount(uint _gasTokenAmount, bool _repay) public onlyOwner {\n\n if (_repay) {\n\n REPAY_GAS_TOKEN = _gasTokenAmount;\n\n } else {\n\n BOOST_GAS_TOKEN = _gasTokenAmount;\n\n }\n\n }\n\n}\n\ncontract AaveMonitorProxy is AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint public CHANGE_PERIOD;\n\n address public monitor;\n\n address public newMonitor;\n\n address public lastMonitor;\n\n uint public changeRequestedTimestamp;\n\n\n\n mapping(address => bool) public allowed;\n\n\n\n event MonitorChangeInitiated(address oldMonitor, address newMonitor);\n\n event MonitorChangeCanceled();\n\n event MonitorChangeFinished(address monitor);\n\n event MonitorChangeReverted(address monitor);\n\n\n\n // if someone who is allowed become malicious, owner can't be changed\n\n modifier onlyAllowed() {\n\n require(allowed[msg.sender] || msg.sender == owner);\n\n _;\n\n }\n\n\n\n modifier onlyMonitor() {\n\n require (msg.sender == monitor);\n\n _;\n\n }\n\n\n\n constructor(uint _changePeriod) public {\n\n CHANGE_PERIOD = _changePeriod * 1 days;\n\n }\n\n\n\n /// @notice Only monitor contract is able to call execute on users proxy\n\n /// @param _owner Address of cdp owner (users DSProxy address)\n\n /// @param _aaveSaverProxy Address of AaveSaverProxy\n\n /// @param _data Data to send to AaveSaverProxy\n\n function callExecute(address _owner, address _aaveSaverProxy, bytes memory _data) public payable onlyMonitor {\n\n // execute reverts if calling specific method fails\n\n DSProxyInterface(_owner).execute{value: msg.value}(_aaveSaverProxy, _data);\n\n\n\n // return if anything left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Allowed users are able to set Monitor contract without any waiting period first time\n\n /// @param _monitor Address of Monitor contract\n\n function setMonitor(address _monitor) public onlyAllowed {\n\n require(monitor == address(0));\n\n monitor = _monitor;\n\n }\n\n\n\n /// @notice Allowed users are able to start procedure for changing monitor\n\n /// @dev after CHANGE_PERIOD needs to call confirmNewMonitor to actually make a change\n\n /// @param _newMonitor address of new monitor\n\n function changeMonitor(address _newMonitor) public onlyAllowed {\n\n require(changeRequestedTimestamp == 0);\n\n\n\n changeRequestedTimestamp = now;\n\n lastMonitor = monitor;\n\n newMonitor = _newMonitor;\n\n\n\n emit MonitorChangeInitiated(lastMonitor, newMonitor);\n\n }\n\n\n\n /// @notice At any point allowed users are able to cancel monitor change\n\n function cancelMonitorChange() public onlyAllowed {\n\n require(changeRequestedTimestamp > 0);\n\n\n\n changeRequestedTimestamp = 0;\n\n newMonitor = address(0);\n\n\n\n emit MonitorChangeCanceled();\n\n }\n\n\n\n /// @notice Anyone is able to confirm new monitor after CHANGE_PERIOD if process is started\n\n function confirmNewMonitor() public onlyAllowed {\n\n require((changeRequestedTimestamp + CHANGE_PERIOD) < now);\n\n require(changeRequestedTimestamp != 0);\n\n require(newMonitor != address(0));\n\n\n\n monitor = newMonitor;\n\n newMonitor = address(0);\n\n changeRequestedTimestamp = 0;\n\n\n\n emit MonitorChangeFinished(monitor);\n\n }\n\n\n\n /// @notice Its possible to revert monitor to last used monitor\n\n function revertMonitor() public onlyAllowed {\n\n require(lastMonitor != address(0));\n\n\n\n monitor = lastMonitor;\n\n\n\n emit MonitorChangeReverted(monitor);\n\n }\n\n\n\n\n\n /// @notice Allowed users are able to add new allowed user\n\n /// @param _user Address of user that will be allowed\n\n function addAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = true;\n\n }\n\n\n\n /// @notice Allowed users are able to remove allowed user\n\n /// @dev owner is always allowed even if someone tries to remove it from allowed mapping\n\n /// @param _user Address of allowed user\n\n function removeAllowed(address _user) public onlyAllowed {\n\n allowed[_user] = false;\n\n }\n\n\n\n function setChangePeriod(uint _periodInDays) public onlyAllowed {\n\n require(_periodInDays * 1 days > CHANGE_PERIOD);\n\n\n\n CHANGE_PERIOD = _periodInDays * 1 days;\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n /// @param _token address of token to withdraw balance\n\n function withdrawToken(address _token) public onlyOwner {\n\n uint balance = ERC20(_token).balanceOf(address(this));\n\n ERC20(_token).safeTransfer(msg.sender, balance);\n\n }\n\n\n\n /// @notice In case something is left in contract, owner is able to withdraw it\n\n function withdrawEth() public onlyOwner {\n\n uint balance = address(this).balance;\n\n msg.sender.transfer(balance);\n\n }\n\n}\n\ncontract AaveSubscriptions is AdminAuth {\n\n\n\n struct AaveHolder {\n\n address user;\n\n uint128 minRatio;\n\n uint128 maxRatio;\n\n uint128 optimalRatioBoost;\n\n uint128 optimalRatioRepay;\n\n bool boostEnabled;\n\n }\n\n\n\n struct SubPosition {\n\n uint arrPos;\n\n bool subscribed;\n\n }\n\n\n\n AaveHolder[] public subscribers;\n\n mapping (address => SubPosition) public subscribersPos;\n\n\n\n uint public changeIndex;\n\n\n\n event Subscribed(address indexed user);\n\n event Unsubscribed(address indexed user);\n\n event Updated(address indexed user);\n\n event ParamUpdates(address indexed user, uint128, uint128, uint128, uint128, bool);\n\n\n\n /// @dev Called by the DSProxy contract which owns the Aave position\n\n /// @notice Adds the users Aave poistion in the list of subscriptions so it can be monitored\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalBoost Ratio amount which boost should target\n\n /// @param _optimalRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(uint128 _minRatio, uint128 _maxRatio, uint128 _optimalBoost, uint128 _optimalRepay, bool _boostEnabled) external {\n\n\n\n // if boost is not enabled, set max ratio to max uint\n\n uint128 localMaxRatio = _boostEnabled ? _maxRatio : uint128(-1);\n\n require(checkParams(_minRatio, localMaxRatio), \"Must be correct params\");\n\n\n\n SubPosition storage subInfo = subscribersPos[msg.sender];\n\n\n\n AaveHolder memory subscription = AaveHolder({\n\n minRatio: _minRatio,\n\n maxRatio: localMaxRatio,\n\n optimalRatioBoost: _optimalBoost,\n\n optimalRatioRepay: _optimalRepay,\n\n user: msg.sender,\n\n boostEnabled: _boostEnabled\n\n });\n\n\n\n changeIndex++;\n\n\n\n if (subInfo.subscribed) {\n\n subscribers[subInfo.arrPos] = subscription;\n\n\n\n emit Updated(msg.sender);\n\n emit ParamUpdates(msg.sender, _minRatio, localMaxRatio, _optimalBoost, _optimalRepay, _boostEnabled);\n\n } else {\n\n subscribers.push(subscription);\n\n\n\n subInfo.arrPos = subscribers.length - 1;\n\n subInfo.subscribed = true;\n\n\n\n emit Subscribed(msg.sender);\n\n }\n\n }\n\n\n\n /// @notice Called by the users DSProxy\n\n /// @dev Owner who subscribed cancels his subscription\n\n function unsubscribe() external {\n\n _unsubscribe(msg.sender);\n\n }\n\n\n\n /// @dev Checks limit if minRatio is bigger than max\n\n /// @param _minRatio Minimum ratio, bellow which repay can be triggered\n\n /// @param _maxRatio Maximum ratio, over which boost can be triggered\n\n /// @return Returns bool if the params are correct\n\n function checkParams(uint128 _minRatio, uint128 _maxRatio) internal pure returns (bool) {\n\n\n\n if (_minRatio > _maxRatio) {\n\n return false;\n\n }\n\n\n\n return true;\n\n }\n\n\n\n /// @dev Internal method to remove a subscriber from the list\n\n /// @param _user The actual address that owns the Aave position\n\n function _unsubscribe(address _user) internal {\n\n require(subscribers.length > 0, \"Must have subscribers in the list\");\n\n\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n require(subInfo.subscribed, \"Must first be subscribed\");\n\n\n\n address lastOwner = subscribers[subscribers.length - 1].user;\n\n\n\n SubPosition storage subInfo2 = subscribersPos[lastOwner];\n\n subInfo2.arrPos = subInfo.arrPos;\n\n\n\n subscribers[subInfo.arrPos] = subscribers[subscribers.length - 1];\n\n subscribers.pop(); // remove last element and reduce arr length\n\n\n\n changeIndex++;\n\n subInfo.subscribed = false;\n\n subInfo.arrPos = 0;\n\n\n\n emit Unsubscribed(msg.sender);\n\n }\n\n\n\n /// @dev Checks if the user is subscribed\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return If the user is subscribed\n\n function isSubscribed(address _user) public view returns (bool) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subInfo.subscribed;\n\n }\n\n\n\n /// @dev Returns subscribtion information about a user\n\n /// @param _user The actual address that owns the Aave position\n\n /// @return Subscription information about the user if exists\n\n function getHolder(address _user) public view returns (AaveHolder memory) {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n return subscribers[subInfo.arrPos];\n\n }\n\n\n\n /// @notice Helper method to return all the subscribed CDPs\n\n /// @return List of all subscribers\n\n function getSubscribers() public view returns (AaveHolder[] memory) {\n\n return subscribers;\n\n }\n\n\n\n /// @notice Helper method for the frontend, returns all the subscribed CDPs paginated\n\n /// @param _page What page of subscribers you want\n\n /// @param _perPage Number of entries per page\n\n /// @return List of all subscribers for that page\n\n function getSubscribersByPage(uint _page, uint _perPage) public view returns (AaveHolder[] memory) {\n\n AaveHolder[] memory holders = new AaveHolder[](_perPage);\n\n\n\n uint start = _page * _perPage;\n\n uint end = start + _perPage;\n\n\n\n end = (end > holders.length) ? holders.length : end;\n\n\n\n uint count = 0;\n\n for (uint i = start; i < end; i++) {\n\n holders[count] = subscribers[i];\n\n count++;\n\n }\n\n\n\n return holders;\n\n }\n\n\n\n ////////////// ADMIN METHODS ///////////////////\n\n\n\n /// @notice Admin function to unsubscribe a position\n\n /// @param _user The actual address that owns the Aave position\n\n function unsubscribeByAdmin(address _user) public onlyOwner {\n\n SubPosition storage subInfo = subscribersPos[_user];\n\n\n\n if (subInfo.subscribed) {\n\n _unsubscribe(_user);\n\n }\n\n }\n\n}\n\ncontract AaveSubscriptionsProxy is ProxyPermission {\n\n\n\n address public constant AAVE_SUBSCRIPTION_ADDRESS = 0xe08ff7A2BADb634F0b581E675E6B3e583De086FC;\n\n address public constant AAVE_MONITOR_PROXY = 0xfA560Dba3a8D0B197cA9505A2B98120DD89209AC;\n\n\n\n /// @notice Calls subscription contract and creates a DSGuard if non existent\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function subscribe(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n givePermission(AAVE_MONITOR_PROXY);\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).subscribe(\n\n _minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls subscription contract and updated existing parameters\n\n /// @dev If subscription is non existent this will create one\n\n /// @param _minRatio Minimum ratio below which repay is triggered\n\n /// @param _maxRatio Maximum ratio after which boost is triggered\n\n /// @param _optimalRatioBoost Ratio amount which boost should target\n\n /// @param _optimalRatioRepay Ratio amount which repay should target\n\n /// @param _boostEnabled Boolean determing if boost is enabled\n\n function update(\n\n uint128 _minRatio,\n\n uint128 _maxRatio,\n\n uint128 _optimalRatioBoost,\n\n uint128 _optimalRatioRepay,\n\n bool _boostEnabled\n\n ) public {\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).subscribe(_minRatio, _maxRatio, _optimalRatioBoost, _optimalRatioRepay, _boostEnabled);\n\n }\n\n\n\n /// @notice Calls the subscription contract to unsubscribe the caller\n\n function unsubscribe() public {\n\n removePermission(AAVE_MONITOR_PROXY);\n\n IAaveSubscription(AAVE_SUBSCRIPTION_ADDRESS).unsubscribe();\n\n }\n\n}\n\ncontract AaveImport is AaveHelper, AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant BASIC_PROXY = 0x29F4af15ad64C509c4140324cFE71FB728D10d2B;\n\n address public constant AETH_ADDRESS = 0x3a3A65aAb0dd2A17E3F1947bA16138cd37d08c04;\n\n\n\n function callFunction(\n\n address sender,\n\n Account.Info memory account,\n\n bytes memory data\n\n ) public {\n\n\n\n (\n\n address collateralToken,\n\n address borrowToken,\n\n uint256 ethAmount,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(data, (address,address,uint256,address,address));\n\n\n\n // withdraw eth\n\n TokenInterface(WETH_ADDRESS).withdraw(ethAmount);\n\n\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n address aCollateralToken = ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(collateralToken);\n\n address aBorrowToken = ILendingPool(lendingPoolCoreAddress).getReserveATokenAddress(borrowToken);\n\n uint256 globalBorrowAmount = 0;\n\n\n\n { // avoid stack too deep\n\n // deposit eth on behalf of proxy\n\n DSProxy(payable(proxy)).execute{value: ethAmount}(BASIC_PROXY, abi.encodeWithSignature(\"deposit(address,uint256)\", ETH_ADDR, ethAmount));\n\n // borrow needed amount to repay users borrow\n\n (,uint256 borrowAmount,,uint256 borrowRateMode,,,uint256 originationFee,,,) = ILendingPool(lendingPool).getUserReserveData(borrowToken, user);\n\n borrowAmount += originationFee;\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"borrow(address,uint256,uint256)\", borrowToken, borrowAmount, borrowRateMode));\n\n globalBorrowAmount = borrowAmount;\n\n }\n\n \n\n // payback on behalf of user\n\n if (borrowToken != ETH_ADDR) {\n\n ERC20(borrowToken).safeApprove(proxy, globalBorrowAmount);\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"paybackOnBehalf(address,address,uint256,bool,address)\", borrowToken, aBorrowToken, 0, true, user));\n\n } else {\n\n DSProxy(payable(proxy)).execute{value: globalBorrowAmount}(BASIC_PROXY, abi.encodeWithSignature(\"paybackOnBehalf(address,address,uint256,bool,address)\", borrowToken, aBorrowToken, 0, true, user));\n\n }\n\n\n\n // pull tokens from user to proxy\n\n ERC20(aCollateralToken).safeTransferFrom(user, proxy, ERC20(aCollateralToken).balanceOf(user));\n\n\n\n // enable as collateral\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"setUserUseReserveAsCollateralIfNeeded(address)\", collateralToken));\n\n\n\n // withdraw deposited eth\n\n DSProxy(payable(proxy)).execute(BASIC_PROXY, abi.encodeWithSignature(\"withdraw(address,address,uint256,bool)\", ETH_ADDR, AETH_ADDRESS, ethAmount, false));\n\n \n\n\n\n // deposit eth, get weth and return to sender\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n ERC20(WETH_ADDRESS).safeTransfer(proxy, ethAmount+2);\n\n }\n\n\n\n /// @dev if contract receive eth, convert it to WETH\n\n receive() external payable {\n\n // deposit eth and get weth \n\n if (msg.sender == owner) {\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n }\n\n }\n\n}\n\ncontract AaveImportTaker is DydxFlashLoanBase, ProxyPermission {\n\n\n\n address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address payable public constant AAVE_IMPORT = 0x7b856af5753a9f80968EA002641E69AdF1d795aB;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must send 2 wei with this transaction\n\n /// @dev User must approve AaveImport to pull _aCollateralToken\n\n /// @param _collateralToken Collateral token we are moving to DSProxy\n\n /// @param _borrowToken Borrow token we are moving to DSProxy\n\n /// @param _ethAmount ETH amount that needs to be pulled from dydx\n\n function importLoan(address _collateralToken, address _borrowToken, uint _ethAmount) public {\n\n ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n\n\n // Get marketId from token address\n\n uint256 marketId = _getMarketIdFromTokenAddress(WETH_ADDR);\n\n\n\n // Calculate repay amount (_amount + (2 wei))\n\n // Approve transfer from\n\n uint256 repayAmount = _getRepaymentAmountInternal(_ethAmount);\n\n ERC20(WETH_ADDR).approve(SOLO_MARGIN_ADDRESS, repayAmount);\n\n\n\n Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);\n\n\n\n operations[0] = _getWithdrawAction(marketId, _ethAmount, AAVE_IMPORT);\n\n operations[1] = _getCallAction(\n\n abi.encode(_collateralToken, _borrowToken, _ethAmount, msg.sender, address(this)),\n\n AAVE_IMPORT\n\n );\n\n operations[2] = _getDepositAction(marketId, repayAmount, address(this));\n\n\n\n Account.Info[] memory accountInfos = new Account.Info[](1);\n\n accountInfos[0] = _getAccountInfo();\n\n\n\n givePermission(AAVE_IMPORT);\n\n solo.operate(accountInfos, operations);\n\n removePermission(AAVE_IMPORT);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveImport\", abi.encode(_collateralToken, _borrowToken));\n\n }\n\n}\n\ncontract CompoundBasicProxy is GasBurner {\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice User deposits tokens to the Compound protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _cTokenAddr CTokens to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n /// @param _inMarket True if the token is already in market for that address\n\n function deposit(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(5) payable {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: msg.value}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice User withdraws tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _cTokenAddr CTokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _isCAmount If true _amount is cTokens if falls _amount is underlying tokens\n\n function withdraw(address _tokenAddr, address _cTokenAddr, uint _amount, bool _isCAmount) public burnGas(5) {\n\n\n\n if (_isCAmount) {\n\n require(CTokenInterface(_cTokenAddr).redeem(_amount) == 0);\n\n } else {\n\n require(CTokenInterface(_cTokenAddr).redeemUnderlying(_amount) == 0);\n\n }\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n }\n\n\n\n /// @notice User borrows tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _cTokenAddr CTokens to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _inMarket True if the token is already in market for that address\n\n function borrow(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(8) {\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the Compound protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _cTokenAddr CTokens to be paybacked\n\n /// @param _amount Amount of tokens to be payedback\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _cTokenAddr, uint _amount, bool _wholeDebt) public burnGas(5) payable {\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (_wholeDebt) {\n\n _amount = CTokenInterface(_cTokenAddr).borrowBalanceCurrent(address(this));\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n\n\n require(CTokenInterface(_cTokenAddr).repayBorrow(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).repayBorrow{value: msg.value}();\n\n msg.sender.transfer(address(this).balance); // send back the extra eth\n\n }\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Enters the Compound market so it can be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Exits the Compound market so it can't be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function exitMarket(address _cTokenAddr) public {\n\n ComptrollerInterface(COMPTROLLER_ADDR).exitMarket(_cTokenAddr);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n}\n\ncontract CompoundSafetyRatio is Exponential, DSMath {\n\n // solhint-disable-next-line const-name-snakecase\n\n ComptrollerInterface public constant comp = ComptrollerInterface(0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B);\n\n\n\n /// @notice Calcualted the ratio of debt / adjusted collateral\n\n /// @param _user Address of the user\n\n function getSafetyRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n\n\n uint sumCollateral = 0;\n\n uint sumBorrow = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in Usd\n\n if (cTokenBalance != 0) {\n\n\n\n (, uint collFactorMantissa) = comp.markets(address(asset));\n\n\n\n Exp memory collateralFactor = Exp({mantissa: collFactorMantissa});\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n\n\n (, Exp memory tokensToUsd) = mulExp3(collateralFactor, exchangeRate, oraclePrice);\n\n\n\n (, sumCollateral) = mulScalarTruncateAddUInt(tokensToUsd, cTokenBalance, sumCollateral);\n\n }\n\n\n\n // Sum up debt in Usd\n\n if (borrowBalance != 0) {\n\n (, sumBorrow) = mulScalarTruncateAddUInt(oraclePrice, borrowBalance, sumBorrow);\n\n }\n\n }\n\n\n\n if (sumBorrow == 0) return uint(-1);\n\n\n\n uint borrowPowerUsed = (sumBorrow * 10**18) / sumCollateral;\n\n return wdiv(1e18, borrowPowerUsed);\n\n }\n\n}\n\ncontract CompoundMonitor is AdminAuth, DSMath, CompoundSafetyRatio, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n enum Method { Boost, Repay }\n\n\n\n uint public REPAY_GAS_TOKEN = 20;\n\n uint public BOOST_GAS_TOKEN = 20;\n\n\n\n uint constant public MAX_GAS_PRICE = 500000000000; // 500 gwei\n\n\n\n uint public REPAY_GAS_COST = 2000000;\n\n uint public BOOST_GAS_COST = 2000000;\n\n\n\n address public constant GAS_TOKEN_INTERFACE_ADDRESS = 0x0000000000b3F879cb30FE243b4Dfee438691c04;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n CompoundMonitorProxy public compoundMonitorProxy;\n\n CompoundSubscriptions public subscriptionsContract;\n\n address public compoundFlashLoanTakerAddress;\n\n\n\n DefisaverLogger public logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n /// @param _compoundMonitorProxy Proxy contracts that actually is authorized to call DSProxy\n\n /// @param _subscriptions Subscriptions contract for Compound positions\n\n /// @param _compoundFlashLoanTaker Contract that actually performs Repay/Boost\n\n constructor(address _compoundMonitorProxy, address _subscriptions, address _compoundFlashLoanTaker) public {\n\n compoundMonitorProxy = CompoundMonitorProxy(_compoundMonitorProxy);\n\n subscriptionsContract = CompoundSubscriptions(_subscriptions);\n\n compoundFlashLoanTakerAddress = _compoundFlashLoanTaker;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _user The actual address that owns the Compound position\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n address _user\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n compoundMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n compoundFlashLoanTakerAddress,\n\n abi.encodeWithSignature(\n\n \"repayWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256)\",\n\n _exData,\n\n _cAddresses,\n\n gasCost\n\n )\n\n );\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticCompoundRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _user The actual address that owns the Compound position\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n address _user\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _user);\n\n require(isAllowed); // check if conditions are met\n\n\n\n uint256 gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n compoundMonitorProxy.callExecute{value: msg.value}(\n\n _user,\n\n compoundFlashLoanTakerAddress,\n\n abi.encodeWithSignature(\n\n \"boostWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256)\",\n\n _exData,\n\n _cAddresses,\n\n gasCost\n\n )\n\n );\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _user);\n\n require(isGoodRatio); // check if the after result of the actions is good\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), _user, \"AutomaticCompoundBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by MCDMonitor to enforce the min/max check\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return Boolean if it can be called and the ratio\n\n function canCall(Method _method, address _user) public view returns(bool, uint) {\n\n bool subscribed = subscriptionsContract.isSubscribed(_user);\n\n CompoundSubscriptions.CompoundHolder memory holder = subscriptionsContract.getHolder(_user);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n /// @param _method Type of action to be called\n\n /// @param _user The actual address that owns the Compound position\n\n /// @return Boolean if the recent action preformed correctly and the ratio\n\n function ratioGoodAfter(Method _method, address _user) public view returns(bool, uint) {\n\n CompoundSubscriptions.CompoundHolder memory holder;\n\n\n\n holder= subscriptionsContract.getHolder(_user);\n\n\n\n uint currRatio = getSafetyRatio(_user);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice If any tokens gets stuck in the contract owner can withdraw it\n\n /// @param _tokenAddress Address of the ERC20 token\n\n /// @param _to Address of the receiver\n\n /// @param _amount The amount to be sent\n\n function transferERC20(address _tokenAddress, address _to, uint _amount) public onlyOwner {\n\n ERC20(_tokenAddress).safeTransfer(_to, _amount);\n\n }\n\n\n\n /// @notice If any Eth gets stuck in the contract owner can withdraw it\n\n /// @param _to Address of the receiver\n\n /// @param _amount The amount to be sent\n\n function transferEth(address payable _to, uint _amount) public onlyOwner {\n\n _to.transfer(_amount);\n\n }\n\n}\n\ncontract CompBalance is Exponential, GasBurner {\n\n\n\n ComptrollerInterface public constant comp = ComptrollerInterface(0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B);\n\n address public constant COMP_ADDR = 0xc00e94Cb662C3520282E6f5717214004A7f26888;\n\n uint224 public constant compInitialIndex = 1e36;\n\n\n\n function claimComp(address _user, address[] memory _cTokensSupply, address[] memory _cTokensBorrow) public burnGas(8) {\n\n _claim(_user, _cTokensSupply, _cTokensBorrow);\n\n\n\n ERC20(COMP_ADDR).transfer(msg.sender, ERC20(COMP_ADDR).balanceOf(address(this)));\n\n }\n\n\n\n function _claim(address _user, address[] memory _cTokensSupply, address[] memory _cTokensBorrow) internal {\n\n address[] memory u = new address[](1);\n\n u[0] = _user;\n\n\n\n comp.claimComp(u, _cTokensSupply, false, true);\n\n comp.claimComp(u, _cTokensBorrow, true, false);\n\n }\n\n\n\n function getBalance(address _user, address[] memory _cTokens) public view returns (uint) {\n\n uint compBalance = 0;\n\n\n\n for(uint i = 0; i < _cTokens.length; ++i) {\n\n compBalance += getSuppyBalance(_cTokens[i], _user);\n\n compBalance += getBorrowBalance(_cTokens[i], _user);\n\n }\n\n\n\n compBalance += ERC20(COMP_ADDR).balanceOf(_user);\n\n\n\n return compBalance;\n\n }\n\n\n\n\n\n function getSuppyBalance(address _cToken, address _supplier) public view returns (uint supplierAccrued) {\n\n ComptrollerInterface.CompMarketState memory supplyState = comp.compSupplyState(_cToken);\n\n Double memory supplyIndex = Double({mantissa: supplyState.index});\n\n Double memory supplierIndex = Double({mantissa: comp.compSupplierIndex(_cToken, _supplier)});\n\n\n\n if (supplierIndex.mantissa == 0 && supplyIndex.mantissa > 0) {\n\n supplierIndex.mantissa = compInitialIndex;\n\n }\n\n\n\n Double memory deltaIndex = sub_(supplyIndex, supplierIndex);\n\n uint supplierTokens = CTokenInterface(_cToken).balanceOf(_supplier);\n\n uint supplierDelta = mul_(supplierTokens, deltaIndex);\n\n supplierAccrued = add_(comp.compAccrued(_supplier), supplierDelta);\n\n }\n\n\n\n function getBorrowBalance(address _cToken, address _borrower) public view returns (uint borrowerAccrued) {\n\n ComptrollerInterface.CompMarketState memory borrowState = comp.compBorrowState(_cToken);\n\n Double memory borrowIndex = Double({mantissa: borrowState.index});\n\n Double memory borrowerIndex = Double({mantissa: comp.compBorrowerIndex(_cToken, _borrower)});\n\n\n\n Exp memory marketBorrowIndex = Exp({mantissa: CTokenInterface(_cToken).borrowIndex()});\n\n\n\n if (borrowerIndex.mantissa > 0) {\n\n Double memory deltaIndex = sub_(borrowIndex, borrowerIndex);\n\n uint borrowerAmount = div_(CTokenInterface(_cToken).borrowBalanceStored(_borrower), marketBorrowIndex);\n\n uint borrowerDelta = mul_(borrowerAmount, deltaIndex);\n\n borrowerAccrued = add_(comp.compAccrued(_borrower), borrowerDelta);\n\n }\n\n }\n\n}\n\ncontract CompoundSaverHelper is DSMath, Exponential {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;\n\n address public constant COMPTROLLER = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n address public constant COMPOUND_LOGGER = 0x3DD0CDf5fFA28C6847B4B276e2fD256046a44bb7;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n /// @notice Helper method to payback the Compound debt\n\n /// @dev If amount is bigger it will repay the whole debt and send the extra to the _user\n\n /// @param _amount Amount of tokens we want to repay\n\n /// @param _cBorrowToken Ctoken address we are repaying\n\n /// @param _borrowToken Token address we are repaying\n\n /// @param _user Owner of the compound position we are paying back\n\n function paybackDebt(uint _amount, address _cBorrowToken, address _borrowToken, address payable _user) internal {\n\n uint wholeDebt = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(address(this));\n\n\n\n if (_amount > wholeDebt) {\n\n if (_borrowToken == ETH_ADDRESS) {\n\n _user.transfer((_amount - wholeDebt));\n\n } else {\n\n ERC20(_borrowToken).safeTransfer(_user, (_amount - wholeDebt));\n\n }\n\n\n\n _amount = wholeDebt;\n\n }\n\n\n\n approveCToken(_borrowToken, _cBorrowToken);\n\n\n\n if (_borrowToken == ETH_ADDRESS) {\n\n CEtherInterface(_cBorrowToken).repayBorrow{value: _amount}();\n\n } else {\n\n require(CTokenInterface(_cBorrowToken).repayBorrow(_amount) == 0);\n\n }\n\n }\n\n\n\n /// @notice Calculates the fee amount\n\n /// @param _amount Amount that is converted\n\n /// @param _user Actuall user addr not DSProxy\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getFee(uint _amount, address _user, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n uint fee = MANUAL_SERVICE_FEE;\n\n\n\n if (BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin)) {\n\n fee = AUTOMATIC_SERVICE_FEE;\n\n }\n\n\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(_user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(_user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint usdTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(CETH_ADDRESS);\n\n\n\n uint tokenPriceInEth = wdiv(usdTokenPrice, ethPrice);\n\n\n\n _gasCost = wdiv(_gasCost, tokenPriceInEth);\n\n\n\n feeAmount = add(feeAmount, _gasCost);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Calculates the gas cost of transaction and send it to wallet\n\n /// @param _amount Amount that is converted\n\n /// @param _gasCost Ether amount of gas we are spending for tx\n\n /// @param _cTokenAddr CToken addr. of token we are getting for the fee\n\n /// @return feeAmount The amount we took for the fee\n\n function getGasCost(uint _amount, uint _gasCost, address _cTokenAddr) internal returns (uint feeAmount) {\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n\n\n if (_gasCost != 0) {\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n uint usdTokenPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cTokenAddr);\n\n uint ethPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(CETH_ADDRESS);\n\n\n\n uint tokenPriceInEth = wdiv(usdTokenPrice, ethPrice);\n\n\n\n feeAmount = wdiv(_gasCost, tokenPriceInEth);\n\n }\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n /// @notice Enters the market for the collatera and borrow tokens\n\n /// @param _cTokenAddrColl Collateral address we are entering the market in\n\n /// @param _cTokenAddrBorrow Borrow address we are entering the market in\n\n function enterMarket(address _cTokenAddrColl, address _cTokenAddrBorrow) internal {\n\n address[] memory markets = new address[](2);\n\n markets[0] = _cTokenAddrColl;\n\n markets[1] = _cTokenAddrBorrow;\n\n\n\n ComptrollerInterface(COMPTROLLER).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveCToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n\n\n /// @notice Returns the owner of the DSProxy that called the contract\n\n function getUserAddress() internal view returns (address) {\n\n DSProxy proxy = DSProxy(uint160(address(this)));\n\n\n\n return proxy.owner();\n\n }\n\n\n\n /// @notice Returns the maximum amount of collateral available to withdraw\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cCollAddress Collateral we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. collateral amount in that token\n\n function getMaxCollateral(address _cCollAddress, address _account) public returns (uint) {\n\n (, uint liquidityInUsd, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n uint usersBalance = CTokenInterface(_cCollAddress).balanceOfUnderlying(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n if (liquidityInUsd == 0) return usersBalance;\n\n\n\n CTokenInterface(_cCollAddress).accrueInterest();\n\n\n\n (, uint collFactorMantissa) = ComptrollerInterface(COMPTROLLER).markets(_cCollAddress);\n\n Exp memory collateralFactor = Exp({mantissa: collFactorMantissa});\n\n\n\n (, uint tokensToUsd) = divScalarByExpTruncate(liquidityInUsd, collateralFactor);\n\n\n\n uint usdPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cCollAddress);\n\n uint liqInToken = wdiv(tokensToUsd, usdPrice);\n\n\n\n if (liqInToken > usersBalance) return usersBalance;\n\n\n\n return sub(liqInToken, (liqInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n\n\n /// @notice Returns the maximum amount of borrow amount available\n\n /// @dev Due to rounding errors the result is - 1% wei from the exact amount\n\n /// @param _cBorrowAddress Borrow token we are getting the max value of\n\n /// @param _account Users account\n\n /// @return Returns the max. borrow amount in that token\n\n function getMaxBorrow(address _cBorrowAddress, address _account) public returns (uint) {\n\n (, uint liquidityInUsd, ) = ComptrollerInterface(COMPTROLLER).getAccountLiquidity(_account);\n\n address oracle = ComptrollerInterface(COMPTROLLER).oracle();\n\n\n\n CTokenInterface(_cBorrowAddress).accrueInterest();\n\n\n\n uint usdPrice = CompoundOracleInterface(oracle).getUnderlyingPrice(_cBorrowAddress);\n\n uint liquidityInToken = wdiv(liquidityInUsd, usdPrice);\n\n\n\n return sub(liquidityInToken, (liquidityInToken / 100)); // cut off 1% due to rounding issues\n\n }\n\n}\n\ncontract CompoundImportFlashLoan is FlashLoanReceiverBase {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant COMPOUND_BORROW_PROXY = 0xb7EDC39bE76107e2Cc645f0f6a3D164f5e173Ee2;\n\n\n\n address public owner;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (\n\n address cCollateralToken,\n\n address cBorrowToken,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(_params, (address,address,address,address));\n\n\n\n // approve FL tokens so we can repay them\n\n ERC20(_reserve).safeApprove(cBorrowToken, 0);\n\n ERC20(_reserve).safeApprove(cBorrowToken, uint(-1));\n\n\n\n // repay compound debt\n\n require(CTokenInterface(cBorrowToken).repayBorrowBehalf(user, uint(-1)) == 0, \"Repay borrow behalf fail\");\n\n\n\n // transfer cTokens to proxy\n\n uint cTokenBalance = CTokenInterface(cCollateralToken).balanceOf(user);\n\n require(CTokenInterface(cCollateralToken).transferFrom(user, proxy, cTokenBalance));\n\n\n\n // borrow\n\n bytes memory proxyData = getProxyData(cCollateralToken, cBorrowToken, _reserve, (_amount + _fee));\n\n DSProxyInterface(proxy).execute(COMPOUND_BORROW_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _cCollToken CToken address of collateral\n\n /// @param _cBorrowToken CToken address we will borrow\n\n /// @param _borrowToken Token address we will borrow\n\n /// @param _amount Amount that will be borrowed\n\n /// @return proxyData Formated function call data\n\n function getProxyData(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) internal pure returns (bytes memory proxyData) {\n\n proxyData = abi.encodeWithSignature(\n\n \"borrow(address,address,address,uint256)\",\n\n _cCollToken, _cBorrowToken, _borrowToken, _amount);\n\n }\n\n\n\n function withdrawStuckFunds(address _tokenAddr, uint _amount) public {\n\n require(owner == msg.sender, \"Must be owner\");\n\n\n\n if (_tokenAddr == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {\n\n msg.sender.transfer(_amount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(owner, _amount);\n\n }\n\n }\n\n}\n\ncontract CompoundImportTaker is CompoundSaverHelper, ProxyPermission, GasBurner {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_IMPORT_FLASH_LOAN = 0xaf9f8781A4c39Ce2122019fC05F22e3a662B0A32;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must approve COMPOUND_IMPORT_FLASH_LOAN to pull _cCollateralToken\n\n /// @param _cCollateralToken Collateral we are moving to DSProxy\n\n /// @param _cBorrowToken Borrow token we are moving to DSProxy\n\n function importLoan(address _cCollateralToken, address _cBorrowToken) external burnGas(20) {\n\n address proxy = getProxy();\n\n\n\n uint loanAmount = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(msg.sender);\n\n bytes memory paramsData = abi.encode(_cCollateralToken, _cBorrowToken, msg.sender, proxy);\n\n\n\n givePermission(COMPOUND_IMPORT_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_IMPORT_FLASH_LOAN, getUnderlyingAddr(_cBorrowToken), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_IMPORT_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundImport\", abi.encode(loanAmount, 0, _cCollateralToken));\n\n }\n\n\n\n /// @notice Gets proxy address, if user doesn't has DSProxy build it\n\n /// @return proxy DsProxy address\n\n function getProxy() internal returns (address proxy) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).proxies(msg.sender);\n\n\n\n if (proxy == address(0)) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).build(msg.sender);\n\n }\n\n\n\n }\n\n}\n\ncontract CreamBasicProxy is GasBurner {\n\n\n\n address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant COMPTROLLER_ADDR = 0x3d5BC3c8d13dcB8bF317092d84783c2697AE9258;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice User deposits tokens to the cream protocol\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @param _tokenAddr The address of the token to be deposited\n\n /// @param _cTokenAddr CTokens to be deposited\n\n /// @param _amount Amount of tokens to be deposited\n\n /// @param _inMarket True if the token is already in market for that address\n\n function deposit(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(5) payable {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: msg.value}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice User withdraws tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be withdrawn\n\n /// @param _cTokenAddr CTokens to be withdrawn\n\n /// @param _amount Amount of tokens to be withdrawn\n\n /// @param _isCAmount If true _amount is cTokens if falls _amount is underlying tokens\n\n function withdraw(address _tokenAddr, address _cTokenAddr, uint _amount, bool _isCAmount) public burnGas(5) {\n\n\n\n if (_isCAmount) {\n\n require(CTokenInterface(_cTokenAddr).redeem(_amount) == 0);\n\n } else {\n\n require(CTokenInterface(_cTokenAddr).redeemUnderlying(_amount) == 0);\n\n }\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n }\n\n\n\n /// @notice User borrows tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be borrowed\n\n /// @param _cTokenAddr CTokens to be borrowed\n\n /// @param _amount Amount of tokens to be borrowed\n\n /// @param _inMarket True if the token is already in market for that address\n\n function borrow(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(8) {\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n\n\n // withdraw funds to msg.sender\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @dev User needs to approve the DSProxy to pull the _tokenAddr tokens\n\n /// @notice User paybacks tokens to the cream protocol\n\n /// @param _tokenAddr The address of the token to be paybacked\n\n /// @param _cTokenAddr CTokens to be paybacked\n\n /// @param _amount Amount of tokens to be payedback\n\n /// @param _wholeDebt If true the _amount will be set to the whole amount of the debt\n\n function payback(address _tokenAddr, address _cTokenAddr, uint _amount, bool _wholeDebt) public burnGas(5) payable {\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (_wholeDebt) {\n\n _amount = CTokenInterface(_cTokenAddr).borrowBalanceCurrent(address(this));\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransferFrom(msg.sender, address(this), _amount);\n\n\n\n require(CTokenInterface(_cTokenAddr).repayBorrow(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).repayBorrow{value: msg.value}();\n\n msg.sender.transfer(address(this).balance); // send back the extra eth\n\n }\n\n }\n\n\n\n /// @notice Helper method to withdraw tokens from the DSProxy\n\n /// @param _tokenAddr Address of the token to be withdrawn\n\n function withdrawTokens(address _tokenAddr) public {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, ERC20(_tokenAddr).balanceOf(address(this)));\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Enters the cream market so it can be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n /// @notice Exits the cream market so it can't be deposited/borrowed\n\n /// @param _cTokenAddr CToken address of the token\n\n function exitMarket(address _cTokenAddr) public {\n\n ComptrollerInterface(COMPTROLLER_ADDR).exitMarket(_cTokenAddr);\n\n }\n\n\n\n /// @notice Approves CToken contract to pull underlying tokens from the DSProxy\n\n /// @param _tokenAddr Token we are trying to approve\n\n /// @param _cTokenAddr Address which will gain the approval\n\n function approveToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDR) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n}\n\ncontract CreamLoanInfo is CreamSafetyRatio {\n\n\n\n struct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint[] collAmounts;\n\n uint[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address cTokenAddress;\n\n address underlyingTokenAddress;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n address underlyingTokenAddress;\n\n uint supplyRate;\n\n uint borrowRate;\n\n uint exchangeRate;\n\n uint marketLiquidity;\n\n uint totalSupply;\n\n uint totalBorrow;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0xD06527D5e56A3495252A528C4987003b712860eE;\n\n\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a cream user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches cream prices for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _cTokens) public view returns (uint[] memory prices) {\n\n prices = new uint[](_cTokens.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n prices[i] = CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches cream collateral factors for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _cTokens) public view returns (uint[] memory collFactors) {\n\n collFactors = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n (, collFactors[i]) = comp.markets(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in eth\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](assets.length),\n\n borrowAddr: new address[](assets.length),\n\n collAmounts: new uint[](assets.length),\n\n borrowAmounts: new uint[](assets.length)\n\n });\n\n\n\n uint collPos = 0;\n\n uint borrowPos = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in eth\n\n if (cTokenBalance != 0) {\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, Exp memory tokensToEth) = mulExp(exchangeRate, oraclePrice);\n\n\n\n data.collAddr[collPos] = asset;\n\n (, data.collAmounts[collPos]) = mulScalarTruncate(tokensToEth, cTokenBalance);\n\n collPos++;\n\n }\n\n\n\n // Sum up debt in eth\n\n if (borrowBalance != 0) {\n\n data.borrowAddr[borrowPos] = asset;\n\n (, data.borrowAmounts[borrowPos]) = mulScalarTruncate(oraclePrice, borrowBalance);\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _cTokens) public view returns (uint[] memory balances, uint[] memory borrows) {\n\n balances = new uint[](_cTokens.length);\n\n borrows = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; i++) {\n\n address asset = _cTokens[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, balances[i]) = mulScalarTruncate(exchangeRate, cTokenBalance);\n\n\n\n borrows[i] = borrowBalance;\n\n }\n\n\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in eth\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a cream user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint[] memory ratios) {\n\n ratios = new uint[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfo[] memory tokens) {\n\n tokens = new TokenInfo[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n cTokenAddress: _cTokenAddresses[i],\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getFullTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfoFull[] memory tokens) {\n\n tokens = new TokenInfoFull[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n CTokenInterface cToken = CTokenInterface(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n supplyRate: cToken.supplyRatePerBlock(),\n\n borrowRate: cToken.borrowRatePerBlock(),\n\n exchangeRate: cToken.exchangeRateCurrent(),\n\n marketLiquidity: cToken.getCash(),\n\n totalSupply: cToken.totalSupply(),\n\n totalBorrow: cToken.totalBorrowsCurrent(),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n}\n\ncontract CreamImportFlashLoan is FlashLoanReceiverBase {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant CREAM_BORROW_PROXY = 0x87F198Ef6116CdBC5f36B581d212ad950b7e2Ddd;\n\n\n\n address public owner;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (\n\n address cCollateralToken,\n\n address cBorrowToken,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(_params, (address,address,address,address));\n\n\n\n // approve FL tokens so we can repay them\n\n ERC20(_reserve).safeApprove(cBorrowToken, uint(-1));\n\n\n\n // repay cream debt\n\n require(CTokenInterface(cBorrowToken).repayBorrowBehalf(user, uint(-1)) == 0, \"Repay borrow behalf fail\");\n\n\n\n // transfer cTokens to proxy\n\n uint cTokenBalance = CTokenInterface(cCollateralToken).balanceOf(user);\n\n require(CTokenInterface(cCollateralToken).transferFrom(user, proxy, cTokenBalance));\n\n\n\n // borrow\n\n bytes memory proxyData = getProxyData(cCollateralToken, cBorrowToken, _reserve, (_amount + _fee));\n\n DSProxyInterface(proxy).execute(CREAM_BORROW_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _cCollToken CToken address of collateral\n\n /// @param _cBorrowToken CToken address we will borrow\n\n /// @param _borrowToken Token address we will borrow\n\n /// @param _amount Amount that will be borrowed\n\n /// @return proxyData Formated function call data\n\n function getProxyData(address _cCollToken, address _cBorrowToken, address _borrowToken, uint _amount) internal pure returns (bytes memory proxyData) {\n\n proxyData = abi.encodeWithSignature(\n\n \"borrow(address,address,address,uint256)\",\n\n _cCollToken, _cBorrowToken, _borrowToken, _amount);\n\n }\n\n\n\n function withdrawStuckFunds(address _tokenAddr, uint _amount) public {\n\n require(owner == msg.sender, \"Must be owner\");\n\n\n\n if (_tokenAddr == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {\n\n msg.sender.transfer(_amount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(owner, _amount);\n\n }\n\n }\n\n}\n\ncontract CreamImportTaker is CreamSaverHelper, ProxyPermission, GasBurner {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant CREAM_IMPORT_FLASH_LOAN = 0x24F4aC0Fe758c45cf8425D8Fbdd608cca9A7dBf8;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must approve cream_IMPORT_FLASH_LOAN to pull _cCollateralToken\n\n /// @param _cCollateralToken Collateral we are moving to DSProxy\n\n /// @param _cBorrowToken Borrow token we are moving to DSProxy\n\n function importLoan(address _cCollateralToken, address _cBorrowToken) external burnGas(20) {\n\n address proxy = getProxy();\n\n\n\n uint loanAmount = CTokenInterface(_cBorrowToken).borrowBalanceCurrent(msg.sender);\n\n bytes memory paramsData = abi.encode(_cCollateralToken, _cBorrowToken, msg.sender, proxy);\n\n\n\n givePermission(CREAM_IMPORT_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(CREAM_IMPORT_FLASH_LOAN, getUnderlyingAddr(_cBorrowToken), loanAmount, paramsData);\n\n\n\n removePermission(CREAM_IMPORT_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamImport\", abi.encode(loanAmount, 0, _cCollateralToken));\n\n }\n\n\n\n /// @notice Gets proxy address, if user doesn't has DSProxy build it\n\n /// @return proxy DsProxy address\n\n function getProxy() internal returns (address proxy) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).proxies(msg.sender);\n\n\n\n if (proxy == address(0)) {\n\n proxy = ProxyRegistryInterface(PROXY_REGISTRY_ADDRESS).build(msg.sender);\n\n }\n\n\n\n }\n\n}\n\ncontract SaverExchangeCore is SaverExchangeHelper, DSMath {\n\n\n\n // first is empty to keep the legacy order in place\n\n enum ExchangeType { _, OASIS, KYBER, UNISWAP, ZEROX }\n\n\n\n enum ActionType { SELL, BUY }\n\n\n\n struct ExchangeData {\n\n address srcAddr;\n\n address destAddr;\n\n uint srcAmount;\n\n uint destAmount;\n\n uint minPrice;\n\n address wrapper;\n\n address exchangeAddr;\n\n bytes callData;\n\n uint256 price0x;\n\n }\n\n\n\n /// @notice Internal method that preforms a sell on 0x/on-chain\n\n /// @dev Usefull for other DFS contract to integrate for exchanging\n\n /// @param exData Exchange data struct\n\n /// @return (address, uint) Address of the wrapper used and destAmount\n\n function _sell(ExchangeData memory exData) internal returns (address, uint) {\n\n\n\n address wrapper;\n\n uint swapedTokens;\n\n bool success;\n\n uint tokensLeft = exData.srcAmount;\n\n\n\n // if selling eth, convert to weth\n\n if (exData.srcAddr == KYBER_ETH_ADDRESS) {\n\n exData.srcAddr = ethToWethAddr(exData.srcAddr);\n\n TokenInterface(WETH_ADDRESS).deposit.value(exData.srcAmount)();\n\n }\n\n\n\n // Try 0x first and then fallback on specific wrapper\n\n if (exData.price0x > 0) {\n\n approve0xProxy(exData.srcAddr, exData.srcAmount);\n\n\n\n uint ethAmount = getProtocolFee(exData.srcAddr, exData.srcAmount);\n\n (success, swapedTokens, tokensLeft) = takeOrder(exData, ethAmount, ActionType.SELL);\n\n\n\n if (success) {\n\n wrapper = exData.exchangeAddr;\n\n }\n\n }\n\n\n\n // fallback to desired wrapper if 0x failed\n\n if (!success) {\n\n swapedTokens = saverSwap(exData, ActionType.SELL);\n\n wrapper = exData.wrapper;\n\n }\n\n\n\n require(getBalance(exData.destAddr) >= wmul(exData.minPrice, exData.srcAmount), \"Final amount isn't correct\");\n\n\n\n // if anything is left in weth, pull it to user as eth\n\n if (getBalance(WETH_ADDRESS) > 0) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n return (wrapper, swapedTokens);\n\n }\n\n\n\n /// @notice Internal method that preforms a buy on 0x/on-chain\n\n /// @dev Usefull for other DFS contract to integrate for exchanging\n\n /// @param exData Exchange data struct\n\n /// @return (address, uint) Address of the wrapper used and srcAmount\n\n function _buy(ExchangeData memory exData) internal returns (address, uint) {\n\n\n\n address wrapper;\n\n uint swapedTokens;\n\n bool success;\n\n\n\n require(exData.destAmount != 0, \"Dest amount must be specified\");\n\n\n\n // if selling eth, convert to weth\n\n if (exData.srcAddr == KYBER_ETH_ADDRESS) {\n\n exData.srcAddr = ethToWethAddr(exData.srcAddr);\n\n TokenInterface(WETH_ADDRESS).deposit.value(exData.srcAmount)();\n\n }\n\n\n\n if (exData.price0x > 0) {\n\n approve0xProxy(exData.srcAddr, exData.srcAmount);\n\n\n\n uint ethAmount = getProtocolFee(exData.srcAddr, exData.srcAmount);\n\n (success, swapedTokens,) = takeOrder(exData, ethAmount, ActionType.BUY);\n\n\n\n if (success) {\n\n wrapper = exData.exchangeAddr;\n\n }\n\n }\n\n\n\n // fallback to desired wrapper if 0x failed\n\n if (!success) {\n\n swapedTokens = saverSwap(exData, ActionType.BUY);\n\n wrapper = exData.wrapper;\n\n }\n\n\n\n require(getBalance(exData.destAddr) >= exData.destAmount, \"Final amount isn't correct\");\n\n\n\n // if anything is left in weth, pull it to user as eth\n\n if (getBalance(WETH_ADDRESS) > 0) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n return (wrapper, getBalance(exData.destAddr));\n\n }\n\n\n\n /// @notice Takes order from 0x and returns bool indicating if it is successful\n\n /// @param _exData Exchange data\n\n /// @param _ethAmount Ether fee needed for 0x order\n\n function takeOrder(\n\n ExchangeData memory _exData,\n\n uint256 _ethAmount,\n\n ActionType _type\n\n ) private returns (bool success, uint256, uint256) {\n\n\n\n // write in the exact amount we are selling/buing in an order\n\n if (_type == ActionType.SELL) {\n\n writeUint256(_exData.callData, 36, _exData.srcAmount);\n\n } else {\n\n writeUint256(_exData.callData, 36, _exData.destAmount);\n\n }\n\n\n\n if (ZrxAllowlist(ZRX_ALLOWLIST_ADDR).isNonPayableAddr(_exData.exchangeAddr)) {\n\n _ethAmount = 0;\n\n }\n\n\n\n uint256 tokensBefore = getBalance(_exData.destAddr);\n\n\n\n if (ZrxAllowlist(ZRX_ALLOWLIST_ADDR).isZrxAddr(_exData.exchangeAddr)) {\n\n (success, ) = _exData.exchangeAddr.call{value: _ethAmount}(_exData.callData);\n\n } else {\n\n success = false;\n\n }\n\n\n\n uint256 tokensSwaped = 0;\n\n uint256 tokensLeft = _exData.srcAmount;\n\n\n\n if (success) {\n\n // check to see if any _src tokens are left over after exchange\n\n tokensLeft = getBalance(_exData.srcAddr);\n\n\n\n // convert weth -> eth if needed\n\n if (_exData.destAddr == KYBER_ETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n // get the current balance of the swaped tokens\n\n tokensSwaped = getBalance(_exData.destAddr) - tokensBefore;\n\n }\n\n\n\n return (success, tokensSwaped, tokensLeft);\n\n }\n\n\n\n /// @notice Calls wraper contract for exchage to preform an on-chain swap\n\n /// @param _exData Exchange data struct\n\n /// @param _type Type of action SELL|BUY\n\n /// @return swapedTokens For Sell that the destAmount, for Buy thats the srcAmount\n\n function saverSwap(ExchangeData memory _exData, ActionType _type) internal returns (uint swapedTokens) {\n\n require(SaverExchangeRegistry(SAVER_EXCHANGE_REGISTRY).isWrapper(_exData.wrapper), \"Wrapper is not valid\");\n\n\n\n uint ethValue = 0;\n\n\n\n ERC20(_exData.srcAddr).safeTransfer(_exData.wrapper, _exData.srcAmount);\n\n\n\n if (_type == ActionType.SELL) {\n\n swapedTokens = ExchangeInterfaceV2(_exData.wrapper).\n\n sell{value: ethValue}(_exData.srcAddr, _exData.destAddr, _exData.srcAmount);\n\n } else {\n\n swapedTokens = ExchangeInterfaceV2(_exData.wrapper).\n\n buy{value: ethValue}(_exData.srcAddr, _exData.destAddr, _exData.destAmount);\n\n }\n\n }\n\n\n\n function writeUint256(bytes memory _b, uint256 _index, uint _input) internal pure {\n\n if (_b.length < _index + 32) {\n\n revert(\"Incorrent lengt while writting bytes32\");\n\n }\n\n\n\n bytes32 input = bytes32(_input);\n\n\n\n _index += 32;\n\n\n\n // Read the bytes32 from array memory\n\n assembly {\n\n mstore(add(_b, _index), input)\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n /// @notice Calculates protocol fee\n\n /// @param _srcAddr selling token address (if eth should be WETH)\n\n /// @param _srcAmount amount we are selling\n\n function getProtocolFee(address _srcAddr, uint256 _srcAmount) internal view returns(uint256) {\n\n // if we are not selling ETH msg value is always the protocol fee\n\n if (_srcAddr != WETH_ADDRESS) return address(this).balance;\n\n\n\n // if msg value is larger than srcAmount, that means that msg value is protocol fee + srcAmount, so we subsctract srcAmount from msg value\n\n // we have an edge case here when protocol fee is higher than selling amount\n\n if (address(this).balance > _srcAmount) return address(this).balance - _srcAmount;\n\n\n\n // if msg value is lower than src amount, that means that srcAmount isn't included in msg value, so we return msg value\n\n return address(this).balance;\n\n }\n\n\n\n function packExchangeData(ExchangeData memory _exData) public pure returns(bytes memory) {\n\n // splitting in two different bytes and encoding all because of stack too deep in decoding part\n\n\n\n bytes memory part1 = abi.encode(\n\n _exData.srcAddr,\n\n _exData.destAddr,\n\n _exData.srcAmount,\n\n _exData.destAmount\n\n );\n\n\n\n bytes memory part2 = abi.encode(\n\n _exData.minPrice,\n\n _exData.wrapper,\n\n _exData.exchangeAddr,\n\n _exData.callData,\n\n _exData.price0x\n\n );\n\n\n\n\n\n return abi.encode(part1, part2);\n\n }\n\n\n\n function unpackExchangeData(bytes memory _data) public pure returns(ExchangeData memory _exData) {\n\n (\n\n bytes memory part1,\n\n bytes memory part2\n\n ) = abi.decode(_data, (bytes,bytes));\n\n\n\n (\n\n _exData.srcAddr,\n\n _exData.destAddr,\n\n _exData.srcAmount,\n\n _exData.destAmount\n\n ) = abi.decode(part1, (address,address,uint256,uint256));\n\n\n\n (\n\n _exData.minPrice,\n\n _exData.wrapper,\n\n _exData.exchangeAddr,\n\n _exData.callData,\n\n _exData.price0x\n\n )\n\n = abi.decode(part2, (uint256,address,address,bytes,uint256));\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external virtual payable {}\n\n}\n\ncontract KyberWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant KYBER_INTERFACE = 0x9AAb3f75489902f3a48495025729a0AF77d4b11e;\n\n address payable public constant WALLET_ID = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Kyber\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external override payable returns (uint) {\n\n ERC20 srcToken = ERC20(_srcAddr);\n\n ERC20 destToken = ERC20(_destAddr);\n\n\n\n KyberNetworkProxyInterface kyberNetworkProxy = KyberNetworkProxyInterface(KYBER_INTERFACE);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcToken.safeApprove(address(kyberNetworkProxy), _srcAmount);\n\n }\n\n\n\n uint destAmount = kyberNetworkProxy.trade{value: msg.value}(\n\n srcToken,\n\n _srcAmount,\n\n destToken,\n\n msg.sender,\n\n uint(-1),\n\n 0,\n\n WALLET_ID\n\n );\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Kyber\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n ERC20 srcToken = ERC20(_srcAddr);\n\n ERC20 destToken = ERC20(_destAddr);\n\n\n\n uint srcAmount = 0;\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcAmount = srcToken.balanceOf(address(this));\n\n } else {\n\n srcAmount = msg.value;\n\n }\n\n\n\n KyberNetworkProxyInterface kyberNetworkProxy = KyberNetworkProxyInterface(KYBER_INTERFACE);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcToken.safeApprove(address(kyberNetworkProxy), srcAmount);\n\n }\n\n\n\n uint destAmount = kyberNetworkProxy.trade{value: msg.value}(\n\n srcToken,\n\n srcAmount,\n\n destToken,\n\n msg.sender,\n\n _destAmount,\n\n 0,\n\n WALLET_ID\n\n );\n\n\n\n require(destAmount == _destAmount, \"Wrong dest amount\");\n\n\n\n uint srcAmountAfter = 0;\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcAmountAfter = srcToken.balanceOf(address(this));\n\n } else {\n\n srcAmountAfter = address(this).balance;\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return (srcAmount - srcAmountAfter);\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return rate Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint rate) {\n\n (rate, ) = KyberNetworkProxyInterface(KYBER_INTERFACE)\n\n .getExpectedRate(ERC20(_srcAddr), ERC20(_destAddr), _srcAmount);\n\n\n\n // multiply with decimal difference in src token\n\n rate = rate * (10**(18 - getDecimals(_srcAddr)));\n\n // divide with decimal difference in dest token\n\n rate = rate / (10**(18 - getDecimals(_destAddr)));\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return rate Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint rate) {\n\n uint256 srcRate = getSellRate(_destAddr, _srcAddr, _destAmount);\n\n uint256 srcAmount = wmul(srcRate, _destAmount);\n\n\n\n rate = getSellRate(_srcAddr, _destAddr, srcAmount);\n\n\n\n // increase rate by 3% too account for inaccuracy between sell/buy conversion\n\n rate = rate + (rate / 30);\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n receive() payable external {}\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n}\n\ncontract OasisTradeWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant OTC_ADDRESS = 0x794e6e91555438aFc3ccF1c5076A74F42133d08D;\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Oasis\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external override payable returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n ERC20(srcAddr).safeApprove(OTC_ADDRESS, _srcAmount);\n\n\n\n uint destAmount = OasisInterface(OTC_ADDRESS).sellAllAmount(srcAddr, _srcAmount, destAddr, 0);\n\n\n\n // convert weth -> eth and send back\n\n if (destAddr == WETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(destAmount);\n\n msg.sender.transfer(destAmount);\n\n } else {\n\n ERC20(destAddr).safeTransfer(msg.sender, destAmount);\n\n }\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Oasis\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n ERC20(srcAddr).safeApprove(OTC_ADDRESS, uint(-1));\n\n\n\n uint srcAmount = OasisInterface(OTC_ADDRESS).buyAllAmount(destAddr, _destAmount, srcAddr, uint(-1));\n\n\n\n // convert weth -> eth and send back\n\n if (destAddr == WETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(_destAmount);\n\n msg.sender.transfer(_destAmount);\n\n } else {\n\n ERC20(destAddr).safeTransfer(msg.sender, _destAmount);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(srcAddr);\n\n\n\n return srcAmount;\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n return wdiv(OasisInterface(OTC_ADDRESS).getBuyAmount(destAddr, srcAddr, _srcAmount), _srcAmount);\n\n }\n\n\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n return wdiv(1 ether, wdiv(OasisInterface(OTC_ADDRESS).getPayAmount(srcAddr, destAddr, _destAmount), _destAmount));\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n\n\n receive() payable external {}\n\n}\n\ncontract UniswapV2Wrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n UniswapRouterInterface public constant router = UniswapRouterInterface(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at UniswapV2\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable override returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n uint[] memory amounts;\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n ERC20(_srcAddr).safeApprove(address(router), _srcAmount);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n amounts = router.swapExactTokensForETH(_srcAmount, 1, path, msg.sender, block.timestamp + 1);\n\n }\n\n // if we are selling token to token\n\n else {\n\n amounts = router.swapExactTokensForTokens(_srcAmount, 1, path, msg.sender, block.timestamp + 1);\n\n }\n\n\n\n return amounts[amounts.length - 1];\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at UniswapV2\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n uint[] memory amounts;\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n ERC20(_srcAddr).safeApprove(address(router), uint(-1));\n\n\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n amounts = router.swapTokensForExactETH(_destAmount, uint(-1), path, msg.sender, block.timestamp + 1);\n\n }\n\n // if we are buying token to token\n\n else {\n\n amounts = router.swapTokensForExactTokens(_destAmount, uint(-1), path, msg.sender, block.timestamp + 1);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return amounts[0];\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n uint[] memory amounts = router.getAmountsOut(_srcAmount, path);\n\n return wdiv(amounts[amounts.length - 1], _srcAmount);\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n address[] memory path = new address[](2);\n\n path[0] = _srcAddr;\n\n path[1] = _destAddr;\n\n\n\n uint[] memory amounts = router.getAmountsIn(_destAmount, path);\n\n return wdiv(_destAmount, amounts[0]);\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n receive() payable external {}\n\n}\n\ncontract UniswapWrapper is DSMath, ExchangeInterfaceV2, AdminAuth {\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant UNISWAP_FACTORY = 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Uniswap\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount) external payable override returns (uint) {\n\n address uniswapExchangeAddr;\n\n uint destAmount;\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, _srcAmount);\n\n\n\n destAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToEthTransferInput(_srcAmount, 1, block.timestamp + 1, msg.sender);\n\n }\n\n // if we are selling token to token\n\n else {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, _srcAmount);\n\n\n\n destAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToTokenTransferInput(_srcAmount, 1, 1, block.timestamp + 1, msg.sender, _destAddr);\n\n }\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Uniswap\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount) external override payable returns(uint) {\n\n address uniswapExchangeAddr;\n\n uint srcAmount;\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, uint(-1));\n\n\n\n srcAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToEthTransferOutput(_destAmount, uint(-1), block.timestamp + 1, msg.sender);\n\n }\n\n // if we are buying token to token\n\n else {\n\n uniswapExchangeAddr = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n\n\n ERC20(_srcAddr).safeApprove(uniswapExchangeAddr, uint(-1));\n\n\n\n srcAmount = UniswapExchangeInterface(uniswapExchangeAddr).\n\n tokenToTokenTransferOutput(_destAmount, uint(-1), uint(-1), block.timestamp + 1, msg.sender, _destAddr);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return srcAmount;\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n if(_srcAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr);\n\n return wdiv(UniswapExchangeInterface(uniswapTokenAddress).getEthToTokenInputPrice(_srcAmount), _srcAmount);\n\n } else if (_destAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n return wdiv(UniswapExchangeInterface(uniswapTokenAddress).getTokenToEthInputPrice(_srcAmount), _srcAmount);\n\n } else {\n\n uint ethBought = UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr)).getTokenToEthInputPrice(_srcAmount);\n\n return wdiv(UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr)).getEthToTokenInputPrice(ethBought), _srcAmount);\n\n }\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n if(_srcAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(uniswapTokenAddress).getEthToTokenOutputPrice(_destAmount), _destAmount));\n\n } else if (_destAddr == WETH_ADDRESS) {\n\n address uniswapTokenAddress = UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(uniswapTokenAddress).getTokenToEthOutputPrice(_destAmount), _destAmount));\n\n } else {\n\n uint ethNeeded = UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_destAddr)).getTokenToEthOutputPrice(_destAmount);\n\n return wdiv(1 ether, wdiv(UniswapExchangeInterface(UniswapFactoryInterface(UNISWAP_FACTORY).getExchange(_srcAddr)).getEthToTokenOutputPrice(ethNeeded), _destAmount));\n\n }\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n receive() payable external {}\n\n}\n\ncontract DFSExchangeCore is DFSExchangeHelper, DSMath, DFSExchangeData {\n\n\n\n string public constant ERR_SLIPPAGE_HIT = \"Slippage hit\";\n\n string public constant ERR_DEST_AMOUNT_MISSING = \"Dest amount missing\";\n\n string public constant ERR_WRAPPER_INVALID = \"Wrapper invalid\";\n\n string public constant ERR_OFFCHAIN_DATA_INVALID = \"Offchain data invalid\";\n\n\n\n /// @notice Internal method that preforms a sell on 0x/on-chain\n\n /// @dev Usefull for other DFS contract to integrate for exchanging\n\n /// @param exData Exchange data struct\n\n /// @return (address, uint) Address of the wrapper used and destAmount\n\n function _sell(ExchangeData memory exData) internal returns (address, uint) {\n\n\n\n address wrapper;\n\n uint swapedTokens;\n\n bool success;\n\n\n\n // if selling eth, convert to weth\n\n if (exData.srcAddr == KYBER_ETH_ADDRESS) {\n\n exData.srcAddr = ethToWethAddr(exData.srcAddr);\n\n TokenInterface(WETH_ADDRESS).deposit.value(exData.srcAmount)();\n\n }\n\n\n\n exData.srcAmount -= getFee(exData.srcAmount, exData.user, exData.srcAddr, exData.dfsFeeDivider);\n\n\n\n // Try 0x first and then fallback on specific wrapper\n\n if (exData.offchainData.price > 0) {\n\n (success, swapedTokens) = takeOrder(exData, ActionType.SELL);\n\n\n\n if (success) {\n\n wrapper = exData.offchainData.exchangeAddr;\n\n }\n\n }\n\n\n\n // fallback to desired wrapper if 0x failed\n\n if (!success) {\n\n swapedTokens = saverSwap(exData, ActionType.SELL);\n\n wrapper = exData.wrapper;\n\n }\n\n\n\n require(getBalance(exData.destAddr) >= wmul(exData.minPrice, exData.srcAmount), ERR_SLIPPAGE_HIT);\n\n\n\n // if anything is left in weth, pull it to user as eth\n\n if (getBalance(WETH_ADDRESS) > 0) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n return (wrapper, swapedTokens);\n\n }\n\n\n\n /// @notice Internal method that preforms a buy on 0x/on-chain\n\n /// @dev Usefull for other DFS contract to integrate for exchanging\n\n /// @param exData Exchange data struct\n\n /// @return (address, uint) Address of the wrapper used and srcAmount\n\n function _buy(ExchangeData memory exData) internal returns (address, uint) {\n\n\n\n address wrapper;\n\n uint swapedTokens;\n\n bool success;\n\n\n\n require(exData.destAmount != 0, ERR_DEST_AMOUNT_MISSING);\n\n\n\n exData.srcAmount -= getFee(exData.srcAmount, exData.user, exData.srcAddr, exData.dfsFeeDivider);\n\n\n\n // if selling eth, convert to weth\n\n if (exData.srcAddr == KYBER_ETH_ADDRESS) {\n\n exData.srcAddr = ethToWethAddr(exData.srcAddr);\n\n TokenInterface(WETH_ADDRESS).deposit.value(exData.srcAmount)();\n\n }\n\n\n\n if (exData.offchainData.price > 0) {\n\n (success, swapedTokens) = takeOrder(exData, ActionType.BUY);\n\n\n\n if (success) {\n\n wrapper = exData.offchainData.exchangeAddr;\n\n }\n\n }\n\n\n\n // fallback to desired wrapper if 0x failed\n\n if (!success) {\n\n swapedTokens = saverSwap(exData, ActionType.BUY);\n\n wrapper = exData.wrapper;\n\n }\n\n\n\n require(getBalance(exData.destAddr) >= exData.destAmount, ERR_SLIPPAGE_HIT);\n\n\n\n // if anything is left in weth, pull it to user as eth\n\n if (getBalance(WETH_ADDRESS) > 0) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n return (wrapper, getBalance(exData.destAddr));\n\n }\n\n\n\n /// @notice Takes order from 0x and returns bool indicating if it is successful\n\n /// @param _exData Exchange data\n\n function takeOrder(\n\n ExchangeData memory _exData,\n\n ActionType _type\n\n ) private returns (bool success, uint256) {\n\n\n\n if (_exData.srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_exData.srcAddr).safeApprove(_exData.offchainData.allowanceTarget, _exData.srcAmount);\n\n }\n\n\n\n // write in the exact amount we are selling/buing in an order\n\n if (_type == ActionType.SELL) {\n\n writeUint256(_exData.offchainData.callData, 36, _exData.srcAmount);\n\n } else {\n\n writeUint256(_exData.offchainData.callData, 36, _exData.destAmount);\n\n }\n\n\n\n uint256 tokensBefore = getBalance(_exData.destAddr);\n\n\n\n if (ZrxAllowlist(ZRX_ALLOWLIST_ADDR).isZrxAddr(_exData.offchainData.exchangeAddr)) {\n\n (success, ) = _exData.offchainData.exchangeAddr.call{value: _exData.offchainData.protocolFee}(_exData.offchainData.callData);\n\n } else {\n\n success = false;\n\n }\n\n\n\n uint256 tokensSwaped = 0;\n\n\n\n if (success) {\n\n\n\n // convert weth -> eth if needed\n\n if (_exData.destAddr == KYBER_ETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(\n\n TokenInterface(WETH_ADDRESS).balanceOf(address(this))\n\n );\n\n }\n\n\n\n // get the current balance of the swaped tokens\n\n tokensSwaped = getBalance(_exData.destAddr) - tokensBefore;\n\n }\n\n\n\n return (success, tokensSwaped);\n\n }\n\n\n\n /// @notice Calls wraper contract for exchage to preform an on-chain swap\n\n /// @param _exData Exchange data struct\n\n /// @param _type Type of action SELL|BUY\n\n /// @return swapedTokens For Sell that the destAmount, for Buy thats the srcAmount\n\n function saverSwap(ExchangeData memory _exData, ActionType _type) internal returns (uint swapedTokens) {\n\n require(SaverExchangeRegistry(SAVER_EXCHANGE_REGISTRY).isWrapper(_exData.wrapper), ERR_WRAPPER_INVALID);\n\n\n\n ERC20(_exData.srcAddr).safeTransfer(_exData.wrapper, _exData.srcAmount);\n\n\n\n if (_type == ActionType.SELL) {\n\n swapedTokens = ExchangeInterfaceV3(_exData.wrapper).\n\n sell(_exData.srcAddr, _exData.destAddr, _exData.srcAmount, _exData.wrapperData);\n\n } else {\n\n swapedTokens = ExchangeInterfaceV3(_exData.wrapper).\n\n buy(_exData.srcAddr, _exData.destAddr, _exData.destAmount, _exData.wrapperData);\n\n }\n\n }\n\n\n\n function writeUint256(bytes memory _b, uint256 _index, uint _input) internal pure {\n\n if (_b.length < _index + 32) {\n\n revert(ERR_OFFCHAIN_DATA_INVALID);\n\n }\n\n\n\n bytes32 input = bytes32(_input);\n\n\n\n _index += 32;\n\n\n\n // Read the bytes32 from array memory\n\n assembly {\n\n mstore(add(_b, _index), input)\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external virtual payable {}\n\n}\n\ncontract KyberWrapperV3 is DSMath, ExchangeInterfaceV3, AdminAuth {\n\n\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant KYBER_INTERFACE = 0x9AAb3f75489902f3a48495025729a0AF77d4b11e;\n\n address payable public constant WALLET_ID = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Kyber\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) external override payable returns (uint) {\n\n ERC20 srcToken = ERC20(_srcAddr);\n\n ERC20 destToken = ERC20(_destAddr);\n\n\n\n KyberNetworkProxyInterface kyberNetworkProxy = KyberNetworkProxyInterface(KYBER_INTERFACE);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcToken.safeApprove(address(kyberNetworkProxy), _srcAmount);\n\n }\n\n\n\n uint destAmount = kyberNetworkProxy.trade{value: msg.value}(\n\n srcToken,\n\n _srcAmount,\n\n destToken,\n\n msg.sender,\n\n uint(-1),\n\n 0,\n\n WALLET_ID\n\n );\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Kyber\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount, bytes memory _additionalData) external override payable returns(uint) {\n\n ERC20 srcToken = ERC20(_srcAddr);\n\n ERC20 destToken = ERC20(_destAddr);\n\n\n\n uint srcAmount = 0;\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcAmount = srcToken.balanceOf(address(this));\n\n } else {\n\n srcAmount = msg.value;\n\n }\n\n\n\n KyberNetworkProxyInterface kyberNetworkProxy = KyberNetworkProxyInterface(KYBER_INTERFACE);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcToken.safeApprove(address(kyberNetworkProxy), srcAmount);\n\n }\n\n\n\n uint destAmount = kyberNetworkProxy.trade{value: msg.value}(\n\n srcToken,\n\n srcAmount,\n\n destToken,\n\n msg.sender,\n\n _destAmount,\n\n 0,\n\n WALLET_ID\n\n );\n\n\n\n require(destAmount == _destAmount, \"Wrong dest amount\");\n\n\n\n uint srcAmountAfter = 0;\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n srcAmountAfter = srcToken.balanceOf(address(this));\n\n } else {\n\n srcAmountAfter = address(this).balance;\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return (srcAmount - srcAmountAfter);\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return rate Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) public override view returns (uint rate) {\n\n (rate, ) = KyberNetworkProxyInterface(KYBER_INTERFACE)\n\n .getExpectedRate(ERC20(_srcAddr), ERC20(_destAddr), _srcAmount);\n\n\n\n // multiply with decimal difference in src token\n\n rate = rate * (10**(18 - getDecimals(_srcAddr)));\n\n // divide with decimal difference in dest token\n\n rate = rate / (10**(18 - getDecimals(_destAddr)));\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return rate Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount, bytes memory _additionalData) public override view returns (uint rate) {\n\n uint256 srcRate = getSellRate(_destAddr, _srcAddr, _destAmount, _additionalData);\n\n uint256 srcAmount = wmul(srcRate, _destAmount);\n\n\n\n rate = getSellRate(_srcAddr, _destAddr, srcAmount, _additionalData);\n\n\n\n // increase rate by 3% too account for inaccuracy between sell/buy conversion\n\n rate = rate + (rate / 30);\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n receive() payable external {}\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n}\n\ncontract OasisTradeWrapperV3 is DSMath, ExchangeInterfaceV3, AdminAuth {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant OTC_ADDRESS = 0x794e6e91555438aFc3ccF1c5076A74F42133d08D;\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n /// @notice Sells a _srcAmount of tokens at Oasis\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) external override payable returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n ERC20(srcAddr).safeApprove(OTC_ADDRESS, _srcAmount);\n\n\n\n uint destAmount = OasisInterface(OTC_ADDRESS).sellAllAmount(srcAddr, _srcAmount, destAddr, 0);\n\n\n\n // convert weth -> eth and send back\n\n if (destAddr == WETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(destAmount);\n\n msg.sender.transfer(destAmount);\n\n } else {\n\n ERC20(destAddr).safeTransfer(msg.sender, destAmount);\n\n }\n\n\n\n return destAmount;\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at Oasis\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount, bytes memory _additionalData) external override payable returns(uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n ERC20(srcAddr).safeApprove(OTC_ADDRESS, uint(-1));\n\n\n\n uint srcAmount = OasisInterface(OTC_ADDRESS).buyAllAmount(destAddr, _destAmount, srcAddr, uint(-1));\n\n\n\n // convert weth -> eth and send back\n\n if (destAddr == WETH_ADDRESS) {\n\n TokenInterface(WETH_ADDRESS).withdraw(_destAmount);\n\n msg.sender.transfer(_destAmount);\n\n } else {\n\n ERC20(destAddr).safeTransfer(msg.sender, _destAmount);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(srcAddr);\n\n\n\n return srcAmount;\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) public override view returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n return wdiv(OasisInterface(OTC_ADDRESS).getBuyAmount(destAddr, srcAddr, _srcAmount), _srcAmount);\n\n }\n\n\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount, bytes memory _additionalData) public override view returns (uint) {\n\n address srcAddr = ethToWethAddr(_srcAddr);\n\n address destAddr = ethToWethAddr(_destAddr);\n\n\n\n return wdiv(1 ether, wdiv(OasisInterface(OTC_ADDRESS).getPayAmount(srcAddr, destAddr, _destAmount), _destAmount));\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n\n\n receive() payable external {}\n\n}\n\ncontract UniswapWrapperV3 is DSMath, ExchangeInterfaceV3, AdminAuth {\n\n\n\n address public constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n UniswapRouterInterface public constant router = UniswapRouterInterface(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Sells a _srcAmount of tokens at UniswapV2\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Destination amount\n\n function sell(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) external payable override returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n uint[] memory amounts;\n\n address[] memory path = abi.decode(_additionalData, (address[]));\n\n\n\n ERC20(_srcAddr).safeApprove(address(router), _srcAmount);\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n amounts = router.swapExactTokensForETH(_srcAmount, 1, path, msg.sender, block.timestamp + 1);\n\n }\n\n // if we are selling token to token\n\n else {\n\n amounts = router.swapExactTokensForTokens(_srcAmount, 1, path, msg.sender, block.timestamp + 1);\n\n }\n\n\n\n return amounts[amounts.length - 1];\n\n }\n\n\n\n /// @notice Buys a _destAmount of tokens at UniswapV2\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint srcAmount\n\n function buy(address _srcAddr, address _destAddr, uint _destAmount, bytes memory _additionalData) external override payable returns(uint) {\n\n\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n uint[] memory amounts;\n\n address[] memory path = abi.decode(_additionalData, (address[]));\n\n\n\n ERC20(_srcAddr).safeApprove(address(router), uint(-1));\n\n\n\n\n\n // if we are buying ether\n\n if (_destAddr == WETH_ADDRESS) {\n\n amounts = router.swapTokensForExactETH(_destAmount, uint(-1), path, msg.sender, block.timestamp + 1);\n\n }\n\n // if we are buying token to token\n\n else {\n\n amounts = router.swapTokensForExactTokens(_destAmount, uint(-1), path, msg.sender, block.timestamp + 1);\n\n }\n\n\n\n // Send the leftover from the source token back\n\n sendLeftOver(_srcAddr);\n\n\n\n return amounts[0];\n\n }\n\n\n\n /// @notice Return a rate for which we can sell an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _srcAmount From amount\n\n /// @return uint Rate\n\n function getSellRate(address _srcAddr, address _destAddr, uint _srcAmount, bytes memory _additionalData) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n address[] memory path = abi.decode(_additionalData, (address[]));\n\n\n\n uint[] memory amounts = router.getAmountsOut(_srcAmount, path);\n\n return wdiv(amounts[amounts.length - 1], _srcAmount);\n\n }\n\n\n\n /// @notice Return a rate for which we can buy an amount of tokens\n\n /// @param _srcAddr From token\n\n /// @param _destAddr To token\n\n /// @param _destAmount To amount\n\n /// @return uint Rate\n\n function getBuyRate(address _srcAddr, address _destAddr, uint _destAmount, bytes memory _additionalData) public override view returns (uint) {\n\n _srcAddr = ethToWethAddr(_srcAddr);\n\n _destAddr = ethToWethAddr(_destAddr);\n\n\n\n address[] memory path = abi.decode(_additionalData, (address[]));\n\n\n\n uint[] memory amounts = router.getAmountsIn(_destAmount, path);\n\n return wdiv(_destAmount, amounts[0]);\n\n }\n\n\n\n /// @notice Send any leftover tokens, we use to clear out srcTokens after buy\n\n /// @param _srcAddr Source token address\n\n function sendLeftOver(address _srcAddr) internal {\n\n msg.sender.transfer(address(this).balance);\n\n\n\n if (_srcAddr != KYBER_ETH_ADDRESS) {\n\n ERC20(_srcAddr).safeTransfer(msg.sender, ERC20(_srcAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n /// @notice Converts Kybers Eth address -> Weth\n\n /// @param _src Input address\n\n function ethToWethAddr(address _src) internal pure returns (address) {\n\n return _src == KYBER_ETH_ADDRESS ? WETH_ADDRESS : _src;\n\n }\n\n\n\n function getDecimals(address _token) internal view returns (uint256) {\n\n if (_token == KYBER_ETH_ADDRESS) return 18;\n\n\n\n return ERC20(_token).decimals();\n\n }\n\n\n\n receive() payable external {}\n\n}\n\ncontract DyDxFlashLoanTaker is DydxFlashLoanBase, ProxyPermission {\n\n\n\n address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n /// @notice Takes flash loan for _receiver\n\n /// @dev Receiver must send back WETH + 2 wei after executing transaction\n\n /// @dev Method is meant to be called from proxy and proxy will give authorization to _receiver\n\n /// @param _receiver Address of funds receiver\n\n /// @param _ethAmount ETH amount that needs to be pulled from dydx \n\n /// @param _encodedData Bytes with packed data\n\n function takeLoan(address _receiver, uint256 _ethAmount, bytes memory _encodedData) public {\n\n ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n\n\n // Get marketId from token address\n\n uint256 marketId = _getMarketIdFromTokenAddress(WETH_ADDR);\n\n\n\n // Calculate repay amount (_amount + (2 wei))\n\n // Approve transfer from\n\n uint256 repayAmount = _getRepaymentAmountInternal(_ethAmount);\n\n ERC20(WETH_ADDR).approve(SOLO_MARGIN_ADDRESS, repayAmount);\n\n\n\n Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);\n\n\n\n operations[0] = _getWithdrawAction(marketId, _ethAmount, _receiver);\n\n operations[1] = _getCallAction(\n\n _encodedData,\n\n _receiver\n\n );\n\n operations[2] = _getDepositAction(marketId, repayAmount, address(this));\n\n\n\n Account.Info[] memory accountInfos = new Account.Info[](1);\n\n accountInfos[0] = _getAccountInfo();\n\n\n\n givePermission(_receiver);\n\n solo.operate(accountInfos, operations);\n\n removePermission(_receiver);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"DyDxFlashLoanTaken\", abi.encode(_receiver, _ethAmount, _encodedData));\n\n }\n\n}\n\nabstract contract CTokenInterface is ERC20 {\n\n function mint(uint256 mintAmount) external virtual returns (uint256);\n\n\n\n // function mint() external virtual payable;\n\n\n\n function accrueInterest() public virtual returns (uint);\n\n\n\n function redeem(uint256 redeemTokens) external virtual returns (uint256);\n\n\n\n function redeemUnderlying(uint256 redeemAmount) external virtual returns (uint256);\n\n\n\n function borrow(uint256 borrowAmount) external virtual returns (uint256);\n\n function borrowIndex() public view virtual returns (uint);\n\n function borrowBalanceStored(address) public view virtual returns(uint);\n\n\n\n function repayBorrow(uint256 repayAmount) external virtual returns (uint256);\n\n\n\n function repayBorrow() external virtual payable;\n\n\n\n function repayBorrowBehalf(address borrower, uint256 repayAmount) external virtual returns (uint256);\n\n\n\n function repayBorrowBehalf(address borrower) external virtual payable;\n\n\n\n function liquidateBorrow(address borrower, uint256 repayAmount, address cTokenCollateral)\n\n external virtual\n\n returns (uint256);\n\n\n\n function liquidateBorrow(address borrower, address cTokenCollateral) external virtual payable;\n\n\n\n function exchangeRateCurrent() external virtual returns (uint256);\n\n\n\n function supplyRatePerBlock() external virtual returns (uint256);\n\n\n\n function borrowRatePerBlock() external virtual returns (uint256);\n\n\n\n function totalReserves() external virtual returns (uint256);\n\n\n\n function reserveFactorMantissa() external virtual returns (uint256);\n\n\n\n function borrowBalanceCurrent(address account) external virtual returns (uint256);\n\n\n\n function totalBorrowsCurrent() external virtual returns (uint256);\n\n\n\n function getCash() external virtual returns (uint256);\n\n\n\n function balanceOfUnderlying(address owner) external virtual returns (uint256);\n\n\n\n function underlying() external virtual returns (address);\n\n\n\n function getAccountSnapshot(address account) external virtual view returns (uint, uint, uint, uint);\n\n}\n\nabstract contract ISubscriptionsV2 is StaticV2 {\n\n\n\n function getOwner(uint _cdpId) external view virtual returns(address);\n\n function getSubscribedInfo(uint _cdpId) public view virtual returns(bool, uint128, uint128, uint128, uint128, address, uint coll, uint debt);\n\n function getCdpHolder(uint _cdpId) public view virtual returns (bool subscribed, CdpHolder memory);\n\n}\n\ncontract MCDMonitorV2 is DSMath, AdminAuth, GasBurner, StaticV2 {\n\n\n\n uint public REPAY_GAS_TOKEN = 25;\n\n uint public BOOST_GAS_TOKEN = 25;\n\n\n\n uint public MAX_GAS_PRICE = 500000000000; // 500 gwei\n\n\n\n uint public REPAY_GAS_COST = 1800000;\n\n uint public BOOST_GAS_COST = 1800000;\n\n\n\n MCDMonitorProxyV2 public monitorProxyContract;\n\n ISubscriptionsV2 public subscriptionsContract;\n\n address public mcdSaverTakerAddress;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n Manager public manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n Vat public vat = Vat(0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B);\n\n Spotter public spotter = Spotter(0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3);\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n modifier onlyApproved() {\n\n require(BotRegistry(BOT_REGISTRY_ADDRESS).botList(msg.sender), \"Not auth bot\");\n\n _;\n\n }\n\n\n\n constructor(address _monitorProxy, address _subscriptions, address _mcdSaverTakerAddress) public {\n\n monitorProxyContract = MCDMonitorProxyV2(_monitorProxy);\n\n subscriptionsContract = ISubscriptionsV2(_subscriptions);\n\n mcdSaverTakerAddress = _mcdSaverTakerAddress;\n\n }\n\n\n\n /// @notice Bots call this method to repay for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n function repayFor(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _nextPrice,\n\n address _joinAddr\n\n ) public payable onlyApproved burnGas(REPAY_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Repay, _cdpId, _nextPrice);\n\n require(isAllowed);\n\n\n\n uint gasCost = calcGasCost(REPAY_GAS_COST);\n\n\n\n address owner = subscriptionsContract.getOwner(_cdpId);\n\n\n\n monitorProxyContract.callExecute{value: msg.value}(\n\n owner,\n\n mcdSaverTakerAddress,\n\n abi.encodeWithSignature(\n\n \"repayWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256,uint256,address)\",\n\n _exchangeData, _cdpId, gasCost, _joinAddr));\n\n\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Repay, _cdpId, _nextPrice);\n\n require(isGoodRatio);\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), owner, \"AutomaticMCDRepay\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n /// @notice Bots call this method to boost for user when conditions are met\n\n /// @dev If the contract ownes gas token it will try and use it for gas price reduction\n\n function boostFor(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _nextPrice,\n\n address _joinAddr\n\n ) public payable onlyApproved burnGas(BOOST_GAS_TOKEN) {\n\n\n\n (bool isAllowed, uint ratioBefore) = canCall(Method.Boost, _cdpId, _nextPrice);\n\n require(isAllowed);\n\n\n\n uint gasCost = calcGasCost(BOOST_GAS_COST);\n\n\n\n address owner = subscriptionsContract.getOwner(_cdpId);\n\n\n\n monitorProxyContract.callExecute{value: msg.value}(\n\n owner,\n\n mcdSaverTakerAddress,\n\n abi.encodeWithSignature(\n\n \"boostWithLoan((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256,uint256,address)\",\n\n _exchangeData, _cdpId, gasCost, _joinAddr));\n\n\n\n (bool isGoodRatio, uint ratioAfter) = ratioGoodAfter(Method.Boost, _cdpId, _nextPrice);\n\n require(isGoodRatio);\n\n\n\n returnEth();\n\n\n\n logger.Log(address(this), owner, \"AutomaticMCDBoost\", abi.encode(ratioBefore, ratioAfter));\n\n }\n\n\n\n/******************* INTERNAL METHODS ********************************/\n\n function returnEth() internal {\n\n // return if some eth left\n\n if (address(this).balance > 0) {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n/******************* STATIC METHODS ********************************/\n\n\n\n /// @notice Returns an address that owns the CDP\n\n /// @param _cdpId Id of the CDP\n\n function getOwner(uint _cdpId) public view returns(address) {\n\n return manager.owns(_cdpId);\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt)\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getCdpInfo(uint _cdpId, bytes32 _ilk) public view returns (uint, uint) {\n\n address urn = manager.urns(_cdpId);\n\n\n\n (uint collateral, uint debt) = vat.urns(_ilk, urn);\n\n (,uint rate,,,) = vat.ilks(_ilk);\n\n\n\n return (collateral, rmul(debt, rate));\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint) {\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (,,uint spot,,) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n /// @notice Gets CDP ratio\n\n /// @param _cdpId Id of the CDP\n\n /// @param _nextPrice Next price for user\n\n function getRatio(uint _cdpId, uint _nextPrice) public view returns (uint) {\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n uint price = (_nextPrice == 0) ? getPrice(ilk) : _nextPrice;\n\n\n\n (uint collateral, uint debt) = getCdpInfo(_cdpId, ilk);\n\n\n\n if (debt == 0) return 0;\n\n\n\n return rdiv(wmul(collateral, price), debt) / (10 ** 18);\n\n }\n\n\n\n /// @notice Checks if Boost/Repay could be triggered for the CDP\n\n /// @dev Called by MCDMonitor to enforce the min/max check\n\n function canCall(Method _method, uint _cdpId, uint _nextPrice) public view returns(bool, uint) {\n\n bool subscribed;\n\n CdpHolder memory holder;\n\n (subscribed, holder) = subscriptionsContract.getCdpHolder(_cdpId);\n\n\n\n // check if cdp is subscribed\n\n if (!subscribed) return (false, 0);\n\n\n\n // check if using next price is allowed\n\n if (_nextPrice > 0 && !holder.nextPriceEnabled) return (false, 0);\n\n\n\n // check if boost and boost allowed\n\n if (_method == Method.Boost && !holder.boostEnabled) return (false, 0);\n\n\n\n // check if owner is still owner\n\n if (getOwner(_cdpId) != holder.owner) return (false, 0);\n\n\n\n uint currRatio = getRatio(_cdpId, _nextPrice);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.minRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.maxRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @dev After the Boost/Repay check if the ratio doesn't trigger another call\n\n function ratioGoodAfter(Method _method, uint _cdpId, uint _nextPrice) public view returns(bool, uint) {\n\n CdpHolder memory holder;\n\n\n\n (, holder) = subscriptionsContract.getCdpHolder(_cdpId);\n\n\n\n uint currRatio = getRatio(_cdpId, _nextPrice);\n\n\n\n if (_method == Method.Repay) {\n\n return (currRatio < holder.maxRatio, currRatio);\n\n } else if (_method == Method.Boost) {\n\n return (currRatio > holder.minRatio, currRatio);\n\n }\n\n }\n\n\n\n /// @notice Calculates gas cost (in Eth) of tx\n\n /// @dev Gas price is limited to MAX_GAS_PRICE to prevent attack of draining user CDP\n\n /// @param _gasAmount Amount of gas used for the tx\n\n function calcGasCost(uint _gasAmount) public view returns (uint) {\n\n uint gasPrice = tx.gasprice <= MAX_GAS_PRICE ? tx.gasprice : MAX_GAS_PRICE;\n\n\n\n return mul(gasPrice, _gasAmount);\n\n }\n\n\n\n/******************* OWNER ONLY OPERATIONS ********************************/\n\n\n\n /// @notice Allows owner to change gas cost for boost operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for boost method\n\n function changeBoostGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n BOOST_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change gas cost for repay operation, but only up to 3 millions\n\n /// @param _gasCost New gas cost for repay method\n\n function changeRepayGasCost(uint _gasCost) public onlyOwner {\n\n require(_gasCost < 3000000);\n\n\n\n REPAY_GAS_COST = _gasCost;\n\n }\n\n\n\n /// @notice Allows owner to change max gas price\n\n /// @param _maxGasPrice New max gas price\n\n function changeMaxGasPrice(uint _maxGasPrice) public onlyOwner {\n\n require(_maxGasPrice < 500000000000);\n\n\n\n MAX_GAS_PRICE = _maxGasPrice;\n\n }\n\n\n\n /// @notice Allows owner to change the amount of gas token burned per function call\n\n /// @param _gasAmount Amount of gas token\n\n /// @param _isRepay Flag to know for which function we are setting the gas token amount\n\n function changeGasTokenAmount(uint _gasAmount, bool _isRepay) public onlyOwner {\n\n if (_isRepay) {\n\n REPAY_GAS_TOKEN = _gasAmount;\n\n } else {\n\n BOOST_GAS_TOKEN = _gasAmount;\n\n }\n\n }\n\n}\n\ncontract MCDCloseFlashLoan is DFSExchangeCore, MCDSaverProxyHelper, FlashLoanReceiverBase, AdminAuth {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n uint public constant SERVICE_FEE = 400; // 0.25% Fee\n\n\n\n bytes32 internal constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n DaiJoin public constant daiJoin = DaiJoin(DAI_JOIN_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n\n\n struct CloseData {\n\n uint cdpId;\n\n uint collAmount;\n\n uint daiAmount;\n\n uint minAccepted;\n\n address joinAddr;\n\n address proxy;\n\n uint flFee;\n\n bool toDai;\n\n address reserve;\n\n uint amount;\n\n }\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n (address proxy, bytes memory packedData) = abi.decode(_params, (address,bytes));\n\n\n\n (MCDCloseTaker.CloseData memory closeDataSent, ExchangeData memory exchangeData) = abi.decode(packedData, (MCDCloseTaker.CloseData,ExchangeData));\n\n\n\n CloseData memory closeData = CloseData({\n\n cdpId: closeDataSent.cdpId,\n\n collAmount: closeDataSent.collAmount,\n\n daiAmount: closeDataSent.daiAmount,\n\n minAccepted: closeDataSent.minAccepted,\n\n joinAddr: closeDataSent.joinAddr,\n\n proxy: proxy,\n\n flFee: _fee,\n\n toDai: closeDataSent.toDai,\n\n reserve: _reserve,\n\n amount: _amount\n\n });\n\n\n\n address user = DSProxy(payable(closeData.proxy)).owner();\n\n\n\n exchangeData.dfsFeeDivider = SERVICE_FEE;\n\n exchangeData.user = user;\n\n\n\n closeCDP(closeData, exchangeData, user);\n\n }\n\n\n\n function closeCDP(\n\n CloseData memory _closeData,\n\n ExchangeData memory _exchangeData,\n\n address _user\n\n ) internal {\n\n\n\n paybackDebt(_closeData.cdpId, manager.ilks(_closeData.cdpId), _closeData.daiAmount); // payback whole debt\n\n uint drawnAmount = drawMaxCollateral(_closeData.cdpId, _closeData.joinAddr, _closeData.collAmount); // draw whole collateral\n\n\n\n uint daiSwaped = 0;\n\n\n\n if (_closeData.toDai) {\n\n _exchangeData.srcAmount = drawnAmount;\n\n (, daiSwaped) = _sell(_exchangeData);\n\n } else {\n\n _exchangeData.destAmount = _closeData.daiAmount;\n\n (, daiSwaped) = _buy(_exchangeData);\n\n }\n\n\n\n address tokenAddr = getVaultCollAddr(_closeData.joinAddr);\n\n\n\n if (_closeData.toDai) {\n\n tokenAddr = DAI_ADDRESS;\n\n }\n\n\n\n require(getBalance(tokenAddr) >= _closeData.minAccepted, \"Below min. number of eth specified\");\n\n\n\n transferFundsBackToPoolInternal(_closeData.reserve, _closeData.amount.add(_closeData.flFee));\n\n\n\n sendLeftover(tokenAddr, DAI_ADDRESS, payable(_user));\n\n\n\n }\n\n\n\n function drawMaxCollateral(uint _cdpId, address _joinAddr, uint _amount) internal returns (uint) {\n\n manager.frob(_cdpId, -toPositiveInt(_amount), 0);\n\n manager.flux(_cdpId, address(this), _amount);\n\n\n\n uint joinAmount = _amount;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n joinAmount = _amount / (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n Join(_joinAddr).exit(address(this), joinAmount);\n\n\n\n if (isEthJoinAddr(_joinAddr)) {\n\n Join(_joinAddr).gem().withdraw(joinAmount); // Weth -> Eth\n\n }\n\n\n\n return joinAmount;\n\n }\n\n\n\n function paybackDebt(uint _cdpId, bytes32 _ilk, uint _daiAmount) internal {\n\n address urn = manager.urns(_cdpId);\n\n\n\n daiJoin.dai().approve(DAI_JOIN_ADDRESS, _daiAmount);\n\n daiJoin.join(urn, _daiAmount);\n\n\n\n manager.frob(_cdpId, 0, normalizePaybackAmount(VAT_ADDRESS, urn, _ilk));\n\n }\n\n\n\n function getVaultCollAddr(address _joinAddr) internal view returns (address) {\n\n address tokenAddr = address(Join(_joinAddr).gem());\n\n\n\n if (tokenAddr == WETH_ADDRESS) {\n\n return KYBER_ETH_ADDRESS;\n\n }\n\n\n\n return tokenAddr;\n\n }\n\n\n\n function getPrice(bytes32 _ilk) public view returns (uint256) {\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (, , uint256 spot, , ) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, DFSExchangeCore) payable {}\n\n\n\n}\n\ncontract MCDCloseTaker is MCDSaverProxyHelper {\n\n\n\n address public constant SUBSCRIPTION_ADDRESS_NEW = 0xC45d4f6B6bf41b6EdAA58B01c4298B8d9078269a;\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n Manager public constant manager = Manager(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);\n\n\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(DEFISAVER_LOGGER);\n\n\n\n struct CloseData {\n\n uint cdpId;\n\n address joinAddr;\n\n uint collAmount;\n\n uint daiAmount;\n\n uint minAccepted;\n\n bool wholeDebt;\n\n bool toDai;\n\n }\n\n\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n\n\n function closeWithLoan(\n\n DFSExchangeData.ExchangeData memory _exchangeData,\n\n CloseData memory _closeData,\n\n address payable mcdCloseFlashLoan\n\n ) public payable {\n\n mcdCloseFlashLoan.transfer(msg.value); // 0x fee\n\n\n\n if (_closeData.wholeDebt) {\n\n _closeData.daiAmount = getAllDebt(\n\n VAT_ADDRESS,\n\n manager.urns(_closeData.cdpId),\n\n manager.urns(_closeData.cdpId),\n\n manager.ilks(_closeData.cdpId)\n\n );\n\n\n\n (_closeData.collAmount, )\n\n = getCdpInfo(manager, _closeData.cdpId, manager.ilks(_closeData.cdpId));\n\n }\n\n\n\n manager.cdpAllow(_closeData.cdpId, mcdCloseFlashLoan, 1);\n\n\n\n bytes memory packedData = _packData(_closeData, _exchangeData);\n\n bytes memory paramsData = abi.encode(address(this), packedData);\n\n\n\n lendingPool.flashLoan(mcdCloseFlashLoan, DAI_ADDRESS, _closeData.daiAmount, paramsData);\n\n\n\n manager.cdpAllow(_closeData.cdpId, mcdCloseFlashLoan, 0);\n\n\n\n // If sub. to automatic protection unsubscribe\n\n unsubscribe(SUBSCRIPTION_ADDRESS_NEW, _closeData.cdpId);\n\n\n\n logger.Log(address(this), msg.sender, \"MCDClose\", abi.encode(_closeData.cdpId, _closeData.collAmount, _closeData.daiAmount, _closeData.toDai));\n\n }\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getMaxDebt(uint256 _cdpId, bytes32 _ilk) public view returns (uint256) {\n\n uint256 price = getPrice(_ilk);\n\n\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (uint256 collateral, uint256 debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(wdiv(wmul(collateral, price), mat), debt);\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint256) {\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (, , uint256 spot, , ) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n function unsubscribe(address _subContract, uint _cdpId) internal {\n\n (, bool isSubscribed) = IMCDSubscriptions(_subContract).subscribersPos(_cdpId);\n\n\n\n if (isSubscribed) {\n\n IMCDSubscriptions(_subContract).unsubscribe(_cdpId);\n\n }\n\n }\n\n\n\n function _packData(\n\n CloseData memory _closeData,\n\n DFSExchangeData.ExchangeData memory _exchangeData\n\n ) internal pure returns (bytes memory) {\n\n\n\n return abi.encode(_closeData, _exchangeData);\n\n }\n\n\n\n}\n\ncontract MCDCreateFlashLoan is DFSExchangeCore, AdminAuth, FlashLoanReceiverBase {\n\n address public constant CREATE_PROXY_ACTIONS = 0x6d0984E80a86f26c0dd564ca0CF74a8E9Da03305;\n\n\n\n uint public constant SERVICE_FEE = 400; // 0.25% Fee\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant JUG_ADDRESS = 0x19c0976f590D67707E62397C87829d896Dc0f1F1;\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n //check the contract has the specified balance\n\n require(_amount <= getBalanceInternal(address(this), _reserve),\n\n \"Invalid balance for the contract\");\n\n\n\n (address proxy, bytes memory packedData) = abi.decode(_params, (address,bytes));\n\n (MCDCreateTaker.CreateData memory createData, ExchangeData memory exchangeData) = abi.decode(packedData, (MCDCreateTaker.CreateData,ExchangeData));\n\n\n\n exchangeData.dfsFeeDivider = SERVICE_FEE;\n\n exchangeData.user = DSProxy(payable(proxy)).owner();\n\n\n\n openAndLeverage(createData.collAmount, createData.daiAmount + _fee, createData.joinAddr, proxy, exchangeData);\n\n\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function openAndLeverage(\n\n uint _collAmount,\n\n uint _daiAmountAndFee,\n\n address _joinAddr,\n\n address _proxy,\n\n ExchangeData memory _exchangeData\n\n ) public {\n\n (, uint256 collSwaped) = _sell(_exchangeData);\n\n\n\n bytes32 ilk = Join(_joinAddr).ilk();\n\n\n\n if (isEthJoinAddr(_joinAddr)) {\n\n MCDCreateProxyActions(CREATE_PROXY_ACTIONS).openLockETHAndDraw{value: address(this).balance}(\n\n MANAGER_ADDRESS,\n\n JUG_ADDRESS,\n\n _joinAddr,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _daiAmountAndFee,\n\n _proxy\n\n );\n\n } else {\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(CREATE_PROXY_ACTIONS, uint256(-1));\n\n\n\n MCDCreateProxyActions(CREATE_PROXY_ACTIONS).openLockGemAndDraw(\n\n MANAGER_ADDRESS,\n\n JUG_ADDRESS,\n\n _joinAddr,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n (_collAmount + collSwaped),\n\n _daiAmountAndFee,\n\n true,\n\n _proxy\n\n );\n\n }\n\n }\n\n\n\n /// @notice Checks if the join address is one of the Ether coll. types\n\n /// @param _joinAddr Join address to check\n\n function isEthJoinAddr(address _joinAddr) internal view returns (bool) {\n\n // if it's dai_join_addr don't check gem() it will fail\n\n if (_joinAddr == 0x9759A6Ac90977b93B58547b4A71c78317f391A28) return false;\n\n\n\n // if coll is weth it's and eth type coll\n\n if (address(Join(_joinAddr).gem()) == 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2) {\n\n return true;\n\n }\n\n\n\n return false;\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, DFSExchangeCore) payable {}\n\n}\n\ncontract MCDSaverProxy is DFSExchangeCore, MCDSaverProxyHelper {\n\n\n\n uint public constant MANUAL_SERVICE_FEE = 400; // 0.25% Fee\n\n uint public constant AUTOMATIC_SERVICE_FEE = 333; // 0.3% Fee\n\n\n\n bytes32 public constant ETH_ILK = 0x4554482d41000000000000000000000000000000000000000000000000000000;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n address public constant VAT_ADDRESS = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;\n\n address public constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;\n\n address public constant DAI_JOIN_ADDRESS = 0x9759A6Ac90977b93B58547b4A71c78317f391A28;\n\n address public constant JUG_ADDRESS = 0x19c0976f590D67707E62397C87829d896Dc0f1F1;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;\n\n\n\n Manager public constant manager = Manager(MANAGER_ADDRESS);\n\n Vat public constant vat = Vat(VAT_ADDRESS);\n\n DaiJoin public constant daiJoin = DaiJoin(DAI_JOIN_ADDRESS);\n\n Spotter public constant spotter = Spotter(SPOTTER_ADDRESS);\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Repay - draws collateral, converts to Dai and repays the debt\n\n /// @dev Must be called by the DSProxy contract that owns the CDP\n\n function repay(\n\n ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable {\n\n\n\n address user = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n drawCollateral(_cdpId, _joinAddr, _exchangeData.srcAmount);\n\n\n\n _exchangeData.user = user;\n\n _exchangeData.dfsFeeDivider = isAutomation() ? AUTOMATIC_SERVICE_FEE : MANUAL_SERVICE_FEE;\n\n (, uint daiAmount) = _sell(_exchangeData);\n\n\n\n daiAmount -= takeFee(_gasCost, daiAmount);\n\n\n\n paybackDebt(_cdpId, ilk, daiAmount, user);\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n\n\n logger.Log(address(this), msg.sender, \"MCDRepay\", abi.encode(_cdpId, user, _exchangeData.srcAmount, daiAmount));\n\n\n\n }\n\n\n\n /// @notice Boost - draws Dai, converts to collateral and adds to CDP\n\n /// @dev Must be called by the DSProxy contract that owns the CDP\n\n function boost(\n\n ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable {\n\n address user = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n uint daiDrawn = drawDai(_cdpId, ilk, _exchangeData.srcAmount);\n\n\n\n _exchangeData.user = user;\n\n _exchangeData.dfsFeeDivider = isAutomation() ? AUTOMATIC_SERVICE_FEE : MANUAL_SERVICE_FEE;\n\n _exchangeData.srcAmount = daiDrawn - takeFee(_gasCost, daiDrawn);\n\n (, uint swapedColl) = _sell(_exchangeData);\n\n\n\n addCollateral(_cdpId, _joinAddr, swapedColl);\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n\n\n logger.Log(address(this), msg.sender, \"MCDBoost\", abi.encode(_cdpId, user, _exchangeData.srcAmount, swapedColl));\n\n }\n\n\n\n /// @notice Draws Dai from the CDP\n\n /// @dev If _daiAmount is bigger than max available we'll draw max\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _daiAmount Amount of Dai to draw\n\n function drawDai(uint _cdpId, bytes32 _ilk, uint _daiAmount) internal returns (uint) {\n\n uint rate = Jug(JUG_ADDRESS).drip(_ilk);\n\n uint daiVatBalance = vat.dai(manager.urns(_cdpId));\n\n\n\n uint maxAmount = getMaxDebt(_cdpId, _ilk);\n\n\n\n if (_daiAmount >= maxAmount) {\n\n _daiAmount = sub(maxAmount, 1);\n\n }\n\n\n\n manager.frob(_cdpId, int(0), normalizeDrawAmount(_daiAmount, rate, daiVatBalance));\n\n manager.move(_cdpId, address(this), toRad(_daiAmount));\n\n\n\n if (vat.can(address(this), address(DAI_JOIN_ADDRESS)) == 0) {\n\n vat.hope(DAI_JOIN_ADDRESS);\n\n }\n\n\n\n DaiJoin(DAI_JOIN_ADDRESS).exit(address(this), _daiAmount);\n\n\n\n return _daiAmount;\n\n }\n\n\n\n /// @notice Adds collateral to the CDP\n\n /// @param _cdpId Id of the CDP\n\n /// @param _joinAddr Address of the join contract for the CDP collateral\n\n /// @param _amount Amount of collateral to add\n\n function addCollateral(uint _cdpId, address _joinAddr, uint _amount) internal {\n\n int convertAmount = 0;\n\n\n\n if (isEthJoinAddr(_joinAddr)) {\n\n Join(_joinAddr).gem().deposit{value: _amount}();\n\n convertAmount = toPositiveInt(_amount);\n\n } else {\n\n convertAmount = toPositiveInt(convertTo18(_joinAddr, _amount));\n\n }\n\n\n\n ERC20(address(Join(_joinAddr).gem())).safeApprove(_joinAddr, _amount);\n\n\n\n Join(_joinAddr).join(address(this), _amount);\n\n\n\n vat.frob(\n\n manager.ilks(_cdpId),\n\n manager.urns(_cdpId),\n\n address(this),\n\n address(this),\n\n convertAmount,\n\n 0\n\n );\n\n\n\n }\n\n\n\n /// @notice Draws collateral and returns it to DSProxy\n\n /// @dev If _amount is bigger than max available we'll draw max\n\n /// @param _cdpId Id of the CDP\n\n /// @param _joinAddr Address of the join contract for the CDP collateral\n\n /// @param _amount Amount of collateral to draw\n\n function drawCollateral(uint _cdpId, address _joinAddr, uint _amount) internal returns (uint) {\n\n uint frobAmount = _amount;\n\n\n\n if (Join(_joinAddr).dec() != 18) {\n\n frobAmount = _amount * (10 ** (18 - Join(_joinAddr).dec()));\n\n }\n\n\n\n manager.frob(_cdpId, -toPositiveInt(frobAmount), 0);\n\n manager.flux(_cdpId, address(this), frobAmount);\n\n\n\n Join(_joinAddr).exit(address(this), _amount);\n\n\n\n if (isEthJoinAddr(_joinAddr)) {\n\n Join(_joinAddr).gem().withdraw(_amount); // Weth -> Eth\n\n }\n\n\n\n return _amount;\n\n }\n\n\n\n /// @notice Paybacks Dai debt\n\n /// @dev If the _daiAmount is bigger than the whole debt, returns extra Dai\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _daiAmount Amount of Dai to payback\n\n /// @param _owner Address that owns the DSProxy that owns the CDP\n\n function paybackDebt(uint _cdpId, bytes32 _ilk, uint _daiAmount, address _owner) internal {\n\n address urn = manager.urns(_cdpId);\n\n\n\n uint wholeDebt = getAllDebt(VAT_ADDRESS, urn, urn, _ilk);\n\n\n\n if (_daiAmount > wholeDebt) {\n\n ERC20(DAI_ADDRESS).transfer(_owner, sub(_daiAmount, wholeDebt));\n\n _daiAmount = wholeDebt;\n\n }\n\n\n\n if (ERC20(DAI_ADDRESS).allowance(address(this), DAI_JOIN_ADDRESS) == 0) {\n\n ERC20(DAI_ADDRESS).approve(DAI_JOIN_ADDRESS, uint(-1));\n\n }\n\n\n\n daiJoin.join(urn, _daiAmount);\n\n\n\n manager.frob(_cdpId, 0, normalizePaybackAmount(VAT_ADDRESS, urn, _ilk));\n\n }\n\n\n\n /// @notice Gets the maximum amount of collateral available to draw\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @param _joinAddr Joind address of collateral\n\n /// @dev Substracts 10 wei to aviod rounding error later on\n\n function getMaxCollateral(uint _cdpId, bytes32 _ilk, address _joinAddr) public view returns (uint) {\n\n uint price = getPrice(_ilk);\n\n\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n (, uint mat) = Spotter(SPOTTER_ADDRESS).ilks(_ilk);\n\n\n\n uint maxCollateral = sub(collateral, (div(mul(mat, debt), price)));\n\n\n\n uint normalizeMaxCollateral = maxCollateral / (10 ** (18 - Join(_joinAddr).dec()));\n\n\n\n // take one percent due to precision issues\n\n return normalizeMaxCollateral * 99 / 100;\n\n }\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n /// @dev Substracts 10 wei to aviod rounding error later on\n\n function getMaxDebt(uint _cdpId, bytes32 _ilk) public virtual view returns (uint) {\n\n uint price = getPrice(_ilk);\n\n\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(sub(div(mul(collateral, price), mat), debt), 10);\n\n }\n\n\n\n /// @notice Gets a price of the asset\n\n /// @param _ilk Ilk of the CDP\n\n function getPrice(bytes32 _ilk) public view returns (uint) {\n\n (, uint mat) = spotter.ilks(_ilk);\n\n (,,uint spot,,) = vat.ilks(_ilk);\n\n\n\n return rmul(rmul(spot, spotter.par()), mat);\n\n }\n\n\n\n /// @notice Gets CDP ratio\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getRatio(uint _cdpId, bytes32 _ilk) public view returns (uint) {\n\n uint price = getPrice( _ilk);\n\n\n\n (uint collateral, uint debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n if (debt == 0) return 0;\n\n\n\n return rdiv(wmul(collateral, price), debt);\n\n }\n\n\n\n /// @notice Gets CDP info (collateral, debt, price, ilk)\n\n /// @param _cdpId Id of the CDP\n\n function getCdpDetailedInfo(uint _cdpId) public view returns (uint collateral, uint debt, uint price, bytes32 ilk) {\n\n address urn = manager.urns(_cdpId);\n\n ilk = manager.ilks(_cdpId);\n\n\n\n (collateral, debt) = vat.urns(ilk, urn);\n\n (,uint rate,,,) = vat.ilks(ilk);\n\n\n\n debt = rmul(debt, rate);\n\n price = getPrice(ilk);\n\n }\n\n\n\n function isAutomation() internal view returns(bool) {\n\n return BotRegistry(BOT_REGISTRY_ADDRESS).botList(tx.origin);\n\n }\n\n\n\n function takeFee(uint256 _gasCost, uint _amount) internal returns(uint) {\n\n if (_gasCost > 0) {\n\n uint ethDaiPrice = getPrice(ETH_ILK);\n\n uint feeAmount = rmul(_gasCost, ethDaiPrice);\n\n\n\n uint balance = ERC20(DAI_ADDRESS).balanceOf(address(this));\n\n\n\n if (feeAmount > _amount / 10) {\n\n feeAmount = _amount / 10;\n\n }\n\n\n\n ERC20(DAI_ADDRESS).transfer(WALLET_ID, feeAmount);\n\n\n\n return feeAmount;\n\n }\n\n\n\n return 0;\n\n }\n\n}\n\ncontract MCDSaverTaker is MCDSaverProxy, GasBurner {\n\n\n\n address payable public constant MCD_SAVER_FLASH_LOAN = 0xec504C93A40A557cC85dAc3e908E85A887438079;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n function boostWithLoan(\n\n ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable burnGas(25) {\n\n uint256 maxDebt = getMaxDebt(_cdpId, manager.ilks(_cdpId));\n\n\n\n uint maxLiq = getAvailableLiquidity(DAI_JOIN_ADDRESS);\n\n\n\n if (maxDebt >= _exchangeData.srcAmount || maxLiq == 0) {\n\n if (_exchangeData.srcAmount > maxDebt) {\n\n _exchangeData.srcAmount = maxDebt;\n\n }\n\n\n\n boost(_exchangeData, _cdpId, _gasCost, _joinAddr);\n\n return;\n\n }\n\n\n\n uint256 loanAmount = sub(_exchangeData.srcAmount, maxDebt);\n\n loanAmount = loanAmount > maxLiq ? maxLiq : loanAmount;\n\n\n\n MCD_SAVER_FLASH_LOAN.transfer(msg.value); // 0x fee\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 1);\n\n\n\n bytes memory paramsData = abi.encode(packExchangeData(_exchangeData), _cdpId, _gasCost, _joinAddr, false);\n\n\n\n lendingPool.flashLoan(MCD_SAVER_FLASH_LOAN, DAI_ADDRESS, loanAmount, paramsData);\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 0);\n\n }\n\n\n\n function repayWithLoan(\n\n ExchangeData memory _exchangeData,\n\n uint _cdpId,\n\n uint _gasCost,\n\n address _joinAddr\n\n ) public payable burnGas(25) {\n\n uint256 maxColl = getMaxCollateral(_cdpId, manager.ilks(_cdpId), _joinAddr);\n\n\n\n\n\n uint maxLiq = getAvailableLiquidity(_joinAddr);\n\n\n\n if (maxColl >= _exchangeData.srcAmount || maxLiq == 0) {\n\n if (_exchangeData.srcAmount > maxColl) {\n\n _exchangeData.srcAmount = maxColl;\n\n }\n\n\n\n repay(_exchangeData, _cdpId, _gasCost, _joinAddr);\n\n return;\n\n }\n\n\n\n uint256 loanAmount = sub(_exchangeData.srcAmount, maxColl);\n\n loanAmount = loanAmount > maxLiq ? maxLiq : loanAmount;\n\n\n\n MCD_SAVER_FLASH_LOAN.transfer(msg.value); // 0x fee\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 1);\n\n\n\n bytes memory paramsData = abi.encode(packExchangeData(_exchangeData), _cdpId, _gasCost, _joinAddr, true);\n\n\n\n lendingPool.flashLoan(MCD_SAVER_FLASH_LOAN, getAaveCollAddr(_joinAddr), loanAmount, paramsData);\n\n\n\n manager.cdpAllow(_cdpId, MCD_SAVER_FLASH_LOAN, 0);\n\n }\n\n\n\n\n\n /// @notice Gets the maximum amount of debt available to generate\n\n /// @param _cdpId Id of the CDP\n\n /// @param _ilk Ilk of the CDP\n\n function getMaxDebt(uint256 _cdpId, bytes32 _ilk) public override view returns (uint256) {\n\n uint256 price = getPrice(_ilk);\n\n\n\n (, uint256 mat) = spotter.ilks(_ilk);\n\n (uint256 collateral, uint256 debt) = getCdpInfo(manager, _cdpId, _ilk);\n\n\n\n return sub(wdiv(wmul(collateral, price), mat), debt);\n\n }\n\n\n\n function getAaveCollAddr(address _joinAddr) internal view returns (address) {\n\n if (isEthJoinAddr(_joinAddr)\n\n || _joinAddr == 0x775787933e92b709f2a3C70aa87999696e74A9F8) {\n\n return KYBER_ETH_ADDRESS;\n\n } else if (_joinAddr == DAI_JOIN_ADDRESS) {\n\n return DAI_ADDRESS;\n\n } else\n\n {\n\n return getCollateralAddr(_joinAddr);\n\n }\n\n }\n\n\n\n function getAvailableLiquidity(address _joinAddr) internal view returns (uint liquidity) {\n\n address tokenAddr = getAaveCollAddr(_joinAddr);\n\n\n\n if (tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n }\n\n\n\n}\n\ncontract SavingsProxy is DSRSavingsProtocol, CompoundSavingsProtocol {\n\n address public constant ADAI_ADDRESS = 0xfC1E690f61EFd961294b3e1Ce3313fBD8aa4f85d;\n\n\n\n address public constant SAVINGS_DYDX_ADDRESS = 0x03b1565e070df392e48e7a8e01798C4B00E534A5;\n\n address public constant SAVINGS_AAVE_ADDRESS = 0x535B9035E9bA8D7efe0FeAEac885fb65b303E37C;\n\n address public constant NEW_IDAI_ADDRESS = 0x493C57C4763932315A328269E1ADaD09653B9081;\n\n\n\n address public constant COMP_ADDRESS = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n address public constant SAVINGS_LOGGER_ADDRESS = 0x89b3635BD2bAD145C6f92E82C9e83f06D5654984;\n\n address public constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;\n\n\n\n enum SavingsProtocol {Compound, Dydx, Fulcrum, Dsr, Aave}\n\n\n\n function deposit(SavingsProtocol _protocol, uint256 _amount) public {\n\n if (_protocol == SavingsProtocol.Dsr) {\n\n dsrDeposit(_amount, true);\n\n } else if (_protocol == SavingsProtocol.Compound) {\n\n compDeposit(msg.sender, _amount);\n\n } else {\n\n _deposit(_protocol, _amount, true);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logDeposit(msg.sender, uint8(_protocol), _amount);\n\n }\n\n\n\n function withdraw(SavingsProtocol _protocol, uint256 _amount) public {\n\n if (_protocol == SavingsProtocol.Dsr) {\n\n dsrWithdraw(_amount, true);\n\n } else if (_protocol == SavingsProtocol.Compound) {\n\n compWithdraw(msg.sender, _amount);\n\n } else {\n\n _withdraw(_protocol, _amount, true);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logWithdraw(msg.sender, uint8(_protocol), _amount);\n\n }\n\n\n\n function swap(SavingsProtocol _from, SavingsProtocol _to, uint256 _amount) public {\n\n if (_from == SavingsProtocol.Dsr) {\n\n dsrWithdraw(_amount, false);\n\n } else if (_from == SavingsProtocol.Compound) {\n\n compWithdraw(msg.sender, _amount);\n\n } else {\n\n _withdraw(_from, _amount, false);\n\n }\n\n\n\n // possible to withdraw 1-2 wei less than actual amount due to division precision\n\n // so we deposit all amount on DSProxy\n\n uint256 amountToDeposit = ERC20(DAI_ADDRESS).balanceOf(address(this));\n\n\n\n if (_to == SavingsProtocol.Dsr) {\n\n dsrDeposit(amountToDeposit, false);\n\n } else if (_from == SavingsProtocol.Compound) {\n\n compDeposit(msg.sender, _amount);\n\n } else {\n\n _deposit(_to, amountToDeposit, false);\n\n }\n\n\n\n SavingsLogger(SAVINGS_LOGGER_ADDRESS).logSwap(\n\n msg.sender,\n\n uint8(_from),\n\n uint8(_to),\n\n _amount\n\n );\n\n }\n\n\n\n function withdrawDai() public {\n\n ERC20(DAI_ADDRESS).transfer(msg.sender, ERC20(DAI_ADDRESS).balanceOf(address(this)));\n\n }\n\n\n\n function claimComp() public {\n\n ComptrollerInterface(COMP_ADDRESS).claimComp(address(this));\n\n }\n\n\n\n function getAddress(SavingsProtocol _protocol) public pure returns (address) {\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n return SAVINGS_DYDX_ADDRESS;\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Aave) {\n\n return SAVINGS_AAVE_ADDRESS;\n\n }\n\n }\n\n\n\n function _deposit(SavingsProtocol _protocol, uint256 _amount, bool _fromUser) internal {\n\n if (_fromUser) {\n\n ERC20(DAI_ADDRESS).transferFrom(msg.sender, address(this), _amount);\n\n }\n\n\n\n approveDeposit(_protocol);\n\n\n\n ProtocolInterface(getAddress(_protocol)).deposit(address(this), _amount);\n\n\n\n endAction(_protocol);\n\n }\n\n\n\n function _withdraw(SavingsProtocol _protocol, uint256 _amount, bool _toUser) public {\n\n approveWithdraw(_protocol);\n\n\n\n ProtocolInterface(getAddress(_protocol)).withdraw(address(this), _amount);\n\n\n\n endAction(_protocol);\n\n\n\n if (_toUser) {\n\n withdrawDai();\n\n }\n\n }\n\n\n\n function endAction(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n setDydxOperator(false);\n\n }\n\n }\n\n\n\n function approveDeposit(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Compound || _protocol == SavingsProtocol.Fulcrum || _protocol == SavingsProtocol.Aave) {\n\n ERC20(DAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n ERC20(DAI_ADDRESS).approve(SOLO_MARGIN_ADDRESS, uint256(-1));\n\n setDydxOperator(true);\n\n }\n\n }\n\n\n\n function approveWithdraw(SavingsProtocol _protocol) internal {\n\n if (_protocol == SavingsProtocol.Compound) {\n\n ERC20(NEW_CDAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Dydx) {\n\n setDydxOperator(true);\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Fulcrum) {\n\n ERC20(NEW_IDAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n\n\n if (_protocol == SavingsProtocol.Aave) {\n\n ERC20(ADAI_ADDRESS).approve(getAddress(_protocol), uint256(-1));\n\n }\n\n }\n\n\n\n function setDydxOperator(bool _trusted) internal {\n\n ISoloMargin.OperatorArg[] memory operatorArgs = new ISoloMargin.OperatorArg[](1);\n\n operatorArgs[0] = ISoloMargin.OperatorArg({\n\n operator: getAddress(SavingsProtocol.Dydx),\n\n trusted: _trusted\n\n });\n\n\n\n ISoloMargin(SOLO_MARGIN_ADDRESS).setOperators(operatorArgs);\n\n }\n\n}\n\ncontract LoanShifterReceiver is SaverExchangeCore, FlashLoanReceiverBase, AdminAuth {\n\n\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x597C52281b31B9d949a9D8fEbA08F7A2530a965e);\n\n\n\n struct ParamData {\n\n bytes proxyData1;\n\n bytes proxyData2;\n\n address proxy;\n\n address debtAddr;\n\n uint8 protocol1;\n\n uint8 protocol2;\n\n uint8 swapType;\n\n }\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (ParamData memory paramData, ExchangeData memory exchangeData)\n\n = packFunctionCall(_amount, _fee, _params);\n\n\n\n address protocolAddr1 = shifterRegistry.getAddr(getNameByProtocol(paramData.protocol1));\n\n address protocolAddr2 = shifterRegistry.getAddr(getNameByProtocol(paramData.protocol2));\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendToProxy(payable(paramData.proxy), _reserve, _amount);\n\n\n\n // Execute the Close/Change debt operation\n\n DSProxyInterface(paramData.proxy).execute(protocolAddr1, paramData.proxyData1);\n\n\n\n if (paramData.swapType == 1) { // COLL_SWAP\n\n exchangeData.srcAmount -= getFee(getBalance(exchangeData.srcAddr), exchangeData.srcAddr, paramData.proxy);\n\n (, uint amount) = _sell(exchangeData);\n\n\n\n sendToProxy(payable(paramData.proxy), exchangeData.destAddr, amount);\n\n } else if (paramData.swapType == 2) { // DEBT_SWAP\n\n exchangeData.srcAmount -= getFee(exchangeData.srcAmount, exchangeData.srcAddr, paramData.proxy);\n\n\n\n exchangeData.destAmount = (_amount + _fee);\n\n _buy(exchangeData);\n\n\n\n // Send extra to DSProxy\n\n sendToProxy(payable(paramData.proxy), exchangeData.srcAddr, ERC20(exchangeData.srcAddr).balanceOf(address(this)));\n\n\n\n } else { // NO_SWAP just send tokens to proxy\n\n sendToProxy(payable(paramData.proxy), exchangeData.srcAddr, getBalance(exchangeData.srcAddr));\n\n }\n\n\n\n // Execute the Open operation\n\n DSProxyInterface(paramData.proxy).execute(protocolAddr2, paramData.proxyData2);\n\n\n\n // Repay FL\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params)\n\n internal pure returns (ParamData memory paramData, ExchangeData memory exchangeData) {\n\n\n\n (\n\n uint[8] memory numData, // collAmount, debtAmount, id1, id2, srcAmount, destAmount, minPrice, price0x\n\n address[8] memory addrData, // addrLoan1, addrLoan2, debtAddr1, debtAddr2, srcAddr, destAddr, exchangeAddr, wrapper\n\n uint8[3] memory enumData, // fromProtocol, toProtocol, swapType\n\n bytes memory callData,\n\n address proxy\n\n )\n\n = abi.decode(_params, (uint256[8],address[8],uint8[3],bytes,address));\n\n\n\n bytes memory proxyData1;\n\n bytes memory proxyData2;\n\n uint openDebtAmount = (_amount + _fee);\n\n\n\n if (enumData[0] == 0) { // MAKER FROM\n\n proxyData1 = abi.encodeWithSignature(\"close(uint256,address,uint256,uint256)\", numData[2], addrData[0], _amount, numData[0]);\n\n\n\n } else if(enumData[0] == 1) { // COMPOUND FROM\n\n if (enumData[2] == 2) { // DEBT_SWAP\n\n proxyData1 = abi.encodeWithSignature(\"changeDebt(address,address,uint256,uint256)\", addrData[2], addrData[3], _amount, numData[4]);\n\n } else {\n\n proxyData1 = abi.encodeWithSignature(\"close(address,address,uint256,uint256)\", addrData[0], addrData[2], numData[0], numData[1]);\n\n }\n\n }\n\n\n\n if (enumData[1] == 0) { // MAKER TO\n\n proxyData2 = abi.encodeWithSignature(\"open(uint256,address,uint256)\", numData[3], addrData[1], openDebtAmount);\n\n } else if(enumData[1] == 1) { // COMPOUND TO\n\n if (enumData[2] == 2) { // DEBT_SWAP\n\n proxyData2 = abi.encodeWithSignature(\"repayAll(address)\", addrData[3]);\n\n } else {\n\n proxyData2 = abi.encodeWithSignature(\"open(address,address,uint256)\", addrData[1], addrData[3], openDebtAmount);\n\n }\n\n }\n\n\n\n\n\n paramData = ParamData({\n\n proxyData1: proxyData1,\n\n proxyData2: proxyData2,\n\n proxy: proxy,\n\n debtAddr: addrData[2],\n\n protocol1: enumData[0],\n\n protocol2: enumData[1],\n\n swapType: enumData[2]\n\n });\n\n\n\n exchangeData = SaverExchangeCore.ExchangeData({\n\n srcAddr: addrData[4],\n\n destAddr: addrData[5],\n\n srcAmount: numData[4],\n\n destAmount: numData[5],\n\n minPrice: numData[6],\n\n wrapper: addrData[7],\n\n exchangeAddr: addrData[6],\n\n callData: callData,\n\n price0x: numData[7]\n\n });\n\n\n\n }\n\n\n\n function sendToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n function getNameByProtocol(uint8 _proto) internal pure returns (string memory) {\n\n if (_proto == 0) {\n\n return \"MCD_SHIFTER\";\n\n } else if (_proto == 1) {\n\n return \"COMP_SHIFTER\";\n\n }\n\n }\n\n\n\n function getFee(uint _amount, address _tokenAddr, address _proxy) internal returns (uint feeAmount) {\n\n uint fee = 400;\n\n\n\n DSProxyInterface proxy = DSProxyInterface(payable(_proxy));\n\n address user = proxy.owner();\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (_tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n}\n\ncontract LoanShifterTaker is AdminAuth, ProxyPermission, GasBurner {\n\n\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;\n\n\n\n address public constant MCD_SUB_ADDRESS = 0xC45d4f6B6bf41b6EdAA58B01c4298B8d9078269a;\n\n address public constant COMPOUND_SUB_ADDRESS = 0x52015EFFD577E08f498a0CCc11905925D58D6207;\n\n\n\n address public constant MANAGER_ADDRESS = 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n Manager public constant manager = Manager(MANAGER_ADDRESS);\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x597C52281b31B9d949a9D8fEbA08F7A2530a965e);\n\n\n\n enum Protocols { MCD, COMPOUND }\n\n enum SwapType { NO_SWAP, COLL_SWAP, DEBT_SWAP }\n\n enum Unsub { NO_UNSUB, FIRST_UNSUB, SECOND_UNSUB, BOTH_UNSUB }\n\n\n\n struct LoanShiftData {\n\n Protocols fromProtocol;\n\n Protocols toProtocol;\n\n SwapType swapType;\n\n Unsub unsub;\n\n bool wholeDebt;\n\n uint collAmount;\n\n uint debtAmount;\n\n address debtAddr1;\n\n address debtAddr2;\n\n address addrLoan1;\n\n address addrLoan2;\n\n uint id1;\n\n uint id2;\n\n }\n\n\n\n /// @notice Main entry point, it will move or transform a loan\n\n /// @dev Called through DSProxy\n\n function moveLoan(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n LoanShiftData memory _loanShift\n\n ) public payable burnGas(20) {\n\n if (_isSameTypeVaults(_loanShift)) {\n\n _forkVault(_loanShift);\n\n logEvent(_exchangeData, _loanShift);\n\n return;\n\n }\n\n\n\n _callCloseAndOpen(_exchangeData, _loanShift);\n\n }\n\n\n\n //////////////////////// INTERNAL FUNCTIONS //////////////////////////\n\n\n\n function _callCloseAndOpen(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n LoanShiftData memory _loanShift\n\n ) internal {\n\n address protoAddr = shifterRegistry.getAddr(getNameByProtocol(uint8(_loanShift.fromProtocol)));\n\n\n\n if (_loanShift.wholeDebt) {\n\n _loanShift.debtAmount = ILoanShifter(protoAddr).getLoanAmount(_loanShift.id1, _loanShift.debtAddr1);\n\n }\n\n\n\n (\n\n uint[8] memory numData,\n\n address[8] memory addrData,\n\n uint8[3] memory enumData,\n\n bytes memory callData\n\n )\n\n = _packData(_loanShift, _exchangeData);\n\n\n\n // encode data\n\n bytes memory paramsData = abi.encode(numData, addrData, enumData, callData, address(this));\n\n\n\n address payable loanShifterReceiverAddr = payable(shifterRegistry.getAddr(\"LOAN_SHIFTER_RECEIVER\"));\n\n\n\n loanShifterReceiverAddr.transfer(address(this).balance);\n\n\n\n // call FL\n\n givePermission(loanShifterReceiverAddr);\n\n\n\n lendingPool.flashLoan(loanShifterReceiverAddr,\n\n getLoanAddr(_loanShift.debtAddr1, _loanShift.fromProtocol), _loanShift.debtAmount, paramsData);\n\n\n\n removePermission(loanShifterReceiverAddr);\n\n\n\n unsubFromAutomation(\n\n _loanShift.unsub,\n\n _loanShift.id1,\n\n _loanShift.id2,\n\n _loanShift.fromProtocol,\n\n _loanShift.toProtocol\n\n );\n\n\n\n logEvent(_exchangeData, _loanShift);\n\n }\n\n\n\n function _forkVault(LoanShiftData memory _loanShift) internal {\n\n // Create new Vault to move to\n\n if (_loanShift.id2 == 0) {\n\n _loanShift.id2 = manager.open(manager.ilks(_loanShift.id1), address(this));\n\n }\n\n\n\n if (_loanShift.wholeDebt) {\n\n manager.shift(_loanShift.id1, _loanShift.id2);\n\n }\n\n }\n\n\n\n function _isSameTypeVaults(LoanShiftData memory _loanShift) internal pure returns (bool) {\n\n return _loanShift.fromProtocol == Protocols.MCD && _loanShift.toProtocol == Protocols.MCD\n\n && _loanShift.addrLoan1 == _loanShift.addrLoan2;\n\n }\n\n\n\n function getNameByProtocol(uint8 _proto) internal pure returns (string memory) {\n\n if (_proto == 0) {\n\n return \"MCD_SHIFTER\";\n\n } else if (_proto == 1) {\n\n return \"COMP_SHIFTER\";\n\n }\n\n }\n\n\n\n function getLoanAddr(address _address, Protocols _fromProtocol) internal returns (address) {\n\n if (_fromProtocol == Protocols.COMPOUND) {\n\n return CTokenInterface(_address).underlying();\n\n } else if (_fromProtocol == Protocols.MCD) {\n\n return DAI_ADDRESS;\n\n } else {\n\n return address(0);\n\n }\n\n }\n\n\n\n function logEvent(\n\n SaverExchangeCore.ExchangeData memory _exchangeData,\n\n LoanShiftData memory _loanShift\n\n ) internal {\n\n address srcAddr = _exchangeData.srcAddr;\n\n address destAddr = _exchangeData.destAddr;\n\n\n\n uint collAmount = _exchangeData.srcAmount;\n\n uint debtAmount = _exchangeData.destAmount;\n\n\n\n if (_loanShift.swapType == SwapType.NO_SWAP) {\n\n srcAddr = _loanShift.addrLoan1;\n\n destAddr = _loanShift.debtAddr1;\n\n\n\n collAmount = _loanShift.collAmount;\n\n debtAmount = _loanShift.debtAmount;\n\n }\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER)\n\n .Log(address(this), msg.sender, \"LoanShifter\",\n\n abi.encode(\n\n _loanShift.fromProtocol,\n\n _loanShift.toProtocol,\n\n _loanShift.swapType,\n\n srcAddr,\n\n destAddr,\n\n collAmount,\n\n debtAmount\n\n ));\n\n }\n\n\n\n function unsubFromAutomation(Unsub _unsub, uint _cdp1, uint _cdp2, Protocols _from, Protocols _to) internal {\n\n if (_unsub != Unsub.NO_UNSUB) {\n\n if (_unsub == Unsub.FIRST_UNSUB || _unsub == Unsub.BOTH_UNSUB) {\n\n unsubscribe(_cdp1, _from);\n\n }\n\n\n\n if (_unsub == Unsub.SECOND_UNSUB || _unsub == Unsub.BOTH_UNSUB) {\n\n unsubscribe(_cdp2, _to);\n\n }\n\n }\n\n }\n\n\n\n function unsubscribe(uint _cdpId, Protocols _protocol) internal {\n\n if (_cdpId != 0 && _protocol == Protocols.MCD) {\n\n IMCDSubscriptions(MCD_SUB_ADDRESS).unsubscribe(_cdpId);\n\n }\n\n\n\n if (_protocol == Protocols.COMPOUND) {\n\n ICompoundSubscriptions(COMPOUND_SUB_ADDRESS).unsubscribe();\n\n }\n\n }\n\n\n\n function _packData(\n\n LoanShiftData memory _loanShift,\n\n SaverExchangeCore.ExchangeData memory exchangeData\n\n ) internal pure returns (uint[8] memory numData, address[8] memory addrData, uint8[3] memory enumData, bytes memory callData) {\n\n\n\n numData = [\n\n _loanShift.collAmount,\n\n _loanShift.debtAmount,\n\n _loanShift.id1,\n\n _loanShift.id2,\n\n exchangeData.srcAmount,\n\n exchangeData.destAmount,\n\n exchangeData.minPrice,\n\n exchangeData.price0x\n\n ];\n\n\n\n addrData = [\n\n _loanShift.addrLoan1,\n\n _loanShift.addrLoan2,\n\n _loanShift.debtAddr1,\n\n _loanShift.debtAddr2,\n\n exchangeData.srcAddr,\n\n exchangeData.destAddr,\n\n exchangeData.exchangeAddr,\n\n exchangeData.wrapper\n\n ];\n\n\n\n enumData = [\n\n uint8(_loanShift.fromProtocol),\n\n uint8(_loanShift.toProtocol),\n\n uint8(_loanShift.swapType)\n\n ];\n\n\n\n callData = exchangeData.callData;\n\n }\n\n\n\n}\n\ncontract CompShifter is CompoundSaverHelper {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n function getLoanAmount(uint _cdpId, address _joinAddr) public returns(uint loanAmount) {\n\n return getWholeDebt(_cdpId, _joinAddr);\n\n }\n\n\n\n function getWholeDebt(uint _cdpId, address _joinAddr) public returns(uint loanAmount) {\n\n return CTokenInterface(_joinAddr).borrowBalanceCurrent(msg.sender);\n\n }\n\n\n\n function close(\n\n address _cCollAddr,\n\n address _cBorrowAddr,\n\n uint _collAmount,\n\n uint _debtAmount\n\n ) public {\n\n address collAddr = getUnderlyingAddr(_cCollAddr);\n\n\n\n // payback debt\n\n paybackDebt(_debtAmount, _cBorrowAddr, getUnderlyingAddr(_cBorrowAddr), tx.origin);\n\n\n\n require(CTokenInterface(_cCollAddr).redeemUnderlying(_collAmount) == 0);\n\n\n\n // Send back money to repay FL\n\n if (collAddr == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(collAddr).safeTransfer(msg.sender, ERC20(collAddr).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function changeDebt(\n\n address _cBorrowAddrOld,\n\n address _cBorrowAddrNew,\n\n uint _debtAmountOld,\n\n uint _debtAmountNew\n\n ) public {\n\n\n\n address borrowAddrNew = getUnderlyingAddr(_cBorrowAddrNew);\n\n\n\n // payback debt in one token\n\n paybackDebt(_debtAmountOld, _cBorrowAddrOld, getUnderlyingAddr(_cBorrowAddrOld), tx.origin);\n\n\n\n // draw debt in another one\n\n borrowCompound(_cBorrowAddrNew, _debtAmountNew);\n\n\n\n // Send back money to repay FL\n\n if (borrowAddrNew == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(borrowAddrNew).safeTransfer(msg.sender, ERC20(borrowAddrNew).balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function open(\n\n address _cCollAddr,\n\n address _cBorrowAddr,\n\n uint _debtAmount\n\n ) public {\n\n\n\n address collAddr = getUnderlyingAddr(_cCollAddr);\n\n address borrowAddr = getUnderlyingAddr(_cBorrowAddr);\n\n\n\n uint collAmount = 0;\n\n\n\n if (collAddr == ETH_ADDRESS) {\n\n collAmount = address(this).balance;\n\n } else {\n\n collAmount = ERC20(collAddr).balanceOf(address(this));\n\n }\n\n\n\n depositCompound(collAddr, _cCollAddr, collAmount);\n\n\n\n // draw debt\n\n borrowCompound(_cBorrowAddr, _debtAmount);\n\n\n\n // Send back money to repay FL\n\n if (borrowAddr == ETH_ADDRESS) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20(borrowAddr).safeTransfer(msg.sender, ERC20(borrowAddr).balanceOf(address(this)));\n\n }\n\n\n\n }\n\n\n\n function repayAll(address _cTokenAddr) public {\n\n address tokenAddr = getUnderlyingAddr(_cTokenAddr);\n\n uint amount = ERC20(tokenAddr).balanceOf(address(this));\n\n\n\n if (amount != 0) {\n\n paybackDebt(amount, _cTokenAddr, tokenAddr, tx.origin);\n\n }\n\n }\n\n\n\n function depositCompound(address _tokenAddr, address _cTokenAddr, uint _amount) internal {\n\n approveCToken(_tokenAddr, _cTokenAddr);\n\n\n\n enterMarket(_cTokenAddr);\n\n\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0, \"mint error\");\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: _amount}();\n\n }\n\n }\n\n\n\n function borrowCompound(address _cTokenAddr, uint _amount) internal {\n\n enterMarket(_cTokenAddr);\n\n\n\n require(CTokenInterface(_cTokenAddr).borrow(_amount) == 0);\n\n }\n\n\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n}\n\ncontract McdShifter is MCDSaverProxy {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant OPEN_PROXY_ACTIONS = 0x6d0984E80a86f26c0dd564ca0CF74a8E9Da03305;\n\n\n\n function getLoanAmount(uint _cdpId, address _joinAddr) public view virtual returns(uint loanAmount) {\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n\n\n (, uint rate,,,) = vat.ilks(ilk);\n\n (, uint art) = vat.urns(ilk, manager.urns(_cdpId));\n\n uint dai = vat.dai(manager.urns(_cdpId));\n\n\n\n uint rad = sub(mul(art, rate), dai);\n\n loanAmount = rad / RAY;\n\n\n\n loanAmount = mul(loanAmount, RAY) < rad ? loanAmount + 1 : loanAmount;\n\n }\n\n\n\n function close(\n\n uint _cdpId,\n\n address _joinAddr,\n\n uint _loanAmount,\n\n uint _collateral\n\n ) public {\n\n address owner = getOwner(manager, _cdpId);\n\n bytes32 ilk = manager.ilks(_cdpId);\n\n (uint maxColl, ) = getCdpInfo(manager, _cdpId, ilk);\n\n\n\n // repay dai debt cdp\n\n paybackDebt(_cdpId, ilk, _loanAmount, owner);\n\n\n\n maxColl = _collateral > maxColl ? maxColl : _collateral;\n\n\n\n // withdraw collateral from cdp\n\n drawCollateral(_cdpId, _joinAddr, maxColl);\n\n\n\n // send back to msg.sender\n\n if (isEthJoinAddr(_joinAddr)) {\n\n msg.sender.transfer(address(this).balance);\n\n } else {\n\n ERC20 collToken = ERC20(getCollateralAddr(_joinAddr));\n\n collToken.safeTransfer(msg.sender, collToken.balanceOf(address(this)));\n\n }\n\n }\n\n\n\n function open(\n\n uint _cdpId,\n\n address _joinAddr,\n\n uint _debtAmount\n\n ) public {\n\n\n\n uint collAmount = 0;\n\n\n\n if (isEthJoinAddr(_joinAddr)) {\n\n collAmount = address(this).balance;\n\n } else {\n\n collAmount = ERC20(address(Join(_joinAddr).gem())).balanceOf(address(this));\n\n }\n\n\n\n if (_cdpId == 0) {\n\n openAndWithdraw(collAmount, _debtAmount, address(this), _joinAddr);\n\n } else {\n\n // add collateral\n\n addCollateral(_cdpId, _joinAddr, collAmount);\n\n // draw debt\n\n drawDai(_cdpId, manager.ilks(_cdpId), _debtAmount);\n\n }\n\n\n\n // transfer to repay FL\n\n ERC20(DAI_ADDRESS).transfer(msg.sender, ERC20(DAI_ADDRESS).balanceOf(address(this)));\n\n\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function openAndWithdraw(uint _collAmount, uint _debtAmount, address _proxy, address _joinAddrTo) internal {\n\n bytes32 ilk = Join(_joinAddrTo).ilk();\n\n\n\n if (isEthJoinAddr(_joinAddrTo)) {\n\n MCDCreateProxyActions(OPEN_PROXY_ACTIONS).openLockETHAndDraw{value: address(this).balance}(\n\n address(manager),\n\n JUG_ADDRESS,\n\n _joinAddrTo,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _debtAmount,\n\n _proxy\n\n );\n\n } else {\n\n ERC20(getCollateralAddr(_joinAddrTo)).approve(OPEN_PROXY_ACTIONS, uint256(-1));\n\n\n\n MCDCreateProxyActions(OPEN_PROXY_ACTIONS).openLockGemAndDraw(\n\n address(manager),\n\n JUG_ADDRESS,\n\n _joinAddrTo,\n\n DAI_JOIN_ADDRESS,\n\n ilk,\n\n _collAmount,\n\n _debtAmount,\n\n true,\n\n _proxy\n\n );\n\n }\n\n }\n\n\n\n}\n\ncontract AaveSaverProxy is GasBurner, SaverExchangeCore, AaveHelper {\n\n\n\n\taddress public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n uint public constant VARIABLE_RATE = 2;\n\n\n\n\tfunction repay(ExchangeData memory _data, uint _gasCost) public payable burnGas(20) {\n\n\n\n\t\taddress lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n\t\taddress lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\t\taddress payable user = payable(getUserAddress());\n\n\n\n\t\t// redeem collateral\n\n\t\taddress aTokenCollateral = ILendingPool(lendingPoolCore).getReserveATokenAddress(_data.srcAddr);\n\n\t\t// uint256 maxCollateral = IAToken(aTokenCollateral).balanceOf(address(this)); \n\n\t\t// don't swap more than maxCollateral\n\n\t\t// _data.srcAmount = _data.srcAmount > maxCollateral ? maxCollateral : _data.srcAmount;\n\n\t\tIAToken(aTokenCollateral).redeem(_data.srcAmount);\n\n\n\n\t\tuint256 destAmount = _data.srcAmount;\n\n\t\tif (_data.srcAddr != _data.destAddr) {\n\n\t\t\t// swap\n\n\t\t\t(, destAmount) = _sell(_data);\n\n\t\t\tdestAmount -= getFee(destAmount, user, _gasCost, _data.destAddr);\n\n\t\t} else {\n\n\t\t\tdestAmount -= getGasCost(destAmount, user, _gasCost, _data.destAddr);\n\n\t\t}\n\n\n\n\t\t// payback\n\n\t\tif (_data.destAddr == ETH_ADDR) {\n\n\t\t\tILendingPool(lendingPool).repay{value: destAmount}(_data.destAddr, destAmount, payable(address(this)));\n\n\t\t} else {\n\n\t\t\tapproveToken(_data.destAddr, lendingPoolCore);\n\n\t\t\tILendingPool(lendingPool).repay(_data.destAddr, destAmount, payable(address(this)));\n\n\t\t}\n\n\n\n\t\t// first return 0x fee to msg.sender as it is the address that actually sent 0x fee\n\n\t\tsendContractBalance(ETH_ADDR, tx.origin, min(address(this).balance, msg.value));\n\n\t\t// send all leftovers from dest addr to proxy owner\n\n\t\tsendFullContractBalance(_data.destAddr, user);\n\n\n\n\t\tDefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveRepay\", abi.encode(_data.srcAddr, _data.destAddr, _data.srcAmount, destAmount));\n\n\t}\n\n\n\n\tfunction boost(ExchangeData memory _data, uint _gasCost) public payable burnGas(20) {\n\n\t\taddress lendingPoolCore = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n\t\taddress lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n\t\t(,,,uint256 borrowRateMode,,,,,,bool collateralEnabled) = ILendingPool(lendingPool).getUserReserveData(_data.destAddr, address(this));\n\n\t\taddress payable user = payable(getUserAddress());\n\n\n\n\t\t// skipping this check as its too expensive\n\n\t\t// uint256 maxBorrow = getMaxBoost(_data.srcAddr, _data.destAddr, address(this));\n\n\t\t// _data.srcAmount = _data.srcAmount > maxBorrow ? maxBorrow : _data.srcAmount;\n\n\n\n\t\t// borrow amount\n\n\t\tILendingPool(lendingPool).borrow(_data.srcAddr, _data.srcAmount, borrowRateMode == 0 ? VARIABLE_RATE : borrowRateMode, AAVE_REFERRAL_CODE);\n\n\n\n\t\tuint256 destAmount;\n\n\t\tif (_data.destAddr != _data.srcAddr) {\n\n\t\t\t_data.srcAmount -= getFee(_data.srcAmount, user, _gasCost, _data.srcAddr);\n\n\t\t\t// swap\n\n\t\t\t(, destAmount) = _sell(_data);\n\n\t\t} else {\n\n\t\t\t_data.srcAmount -= getGasCost(_data.srcAmount, user, _gasCost, _data.srcAddr);\n\n\t\t\tdestAmount = _data.srcAmount;\n\n\t\t}\n\n\n\n\t\tif (_data.destAddr == ETH_ADDR) {\n\n\t\t\tILendingPool(lendingPool).deposit{value: destAmount}(_data.destAddr, destAmount, AAVE_REFERRAL_CODE);\n\n\t\t} else {\n\n\t\t\tapproveToken(_data.destAddr, lendingPoolCore);\n\n\t\t\tILendingPool(lendingPool).deposit(_data.destAddr, destAmount, AAVE_REFERRAL_CODE);\n\n\t\t}\n\n\n\n\t\tif (!collateralEnabled) {\n\n ILendingPool(lendingPool).setUserUseReserveAsCollateral(_data.destAddr, true);\n\n }\n\n\n\n\t\t// returning to msg.sender as it is the address that actually sent 0x fee\n\n\t\tsendContractBalance(ETH_ADDR, tx.origin, min(address(this).balance, msg.value));\n\n\t\t// send all leftovers from dest addr to proxy owner\n\n\t\tsendFullContractBalance(_data.destAddr, user);\n\n\n\n\t\tDefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"AaveBoost\", abi.encode(_data.srcAddr, _data.destAddr, _data.srcAmount, destAmount));\n\n\t}\n\n}\n\ncontract AaveSaverReceiver is AaveHelper, AdminAuth, SaverExchangeCore {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n address public constant AAVE_SAVER_PROXY = 0xCab7ce9148499E0dD8228c3c8cDb9B56Ac2bb57a;\n\n address public constant AAVE_BASIC_PROXY = 0xd042D4E9B4186c545648c7FfFe87125c976D110B;\n\n address public constant AETH_ADDRESS = 0x3a3A65aAb0dd2A17E3F1947bA16138cd37d08c04;\n\n\n\n function callFunction(\n\n address sender,\n\n Account.Info memory account,\n\n bytes memory data\n\n ) public {\n\n\n\n (\n\n bytes memory exchangeDataBytes,\n\n uint256 gasCost,\n\n bool isRepay,\n\n uint256 ethAmount,\n\n uint256 txValue,\n\n address user,\n\n address proxy\n\n )\n\n = abi.decode(data, (bytes,uint256,bool,uint256,uint256,address,address));\n\n\n\n // withdraw eth\n\n TokenInterface(WETH_ADDRESS).withdraw(ethAmount);\n\n\n\n address lendingPoolCoreAddress = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPoolCore();\n\n address lendingPool = ILendingPoolAddressesProvider(AAVE_LENDING_POOL_ADDRESSES).getLendingPool();\n\n \n\n // deposit eth on behalf of proxy\n\n DSProxy(payable(proxy)).execute{value: ethAmount}(AAVE_BASIC_PROXY, abi.encodeWithSignature(\"deposit(address,uint256)\", ETH_ADDR, ethAmount));\n\n \n\n bytes memory functionData = packFunctionCall(exchangeDataBytes, gasCost, isRepay);\n\n DSProxy(payable(proxy)).execute{value: txValue}(AAVE_SAVER_PROXY, functionData);\n\n\n\n // withdraw deposited eth\n\n DSProxy(payable(proxy)).execute(AAVE_BASIC_PROXY, abi.encodeWithSignature(\"withdraw(address,address,uint256,bool)\", ETH_ADDR, AETH_ADDRESS, ethAmount, false));\n\n\n\n // deposit eth, get weth and return to sender\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n ERC20(WETH_ADDRESS).safeTransfer(proxy, ethAmount+2);\n\n }\n\n\n\n function packFunctionCall(bytes memory _exchangeDataBytes, uint256 _gasCost, bool _isRepay) internal returns (bytes memory) {\n\n ExchangeData memory exData = unpackExchangeData(_exchangeDataBytes);\n\n\n\n bytes memory functionData;\n\n\n\n if (_isRepay) {\n\n functionData = abi.encodeWithSignature(\"repay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\", exData, _gasCost);\n\n } else {\n\n functionData = abi.encodeWithSignature(\"boost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),uint256)\", exData, _gasCost);\n\n }\n\n\n\n return functionData;\n\n }\n\n\n\n /// @dev if contract receive eth, convert it to WETH\n\n receive() external override payable {\n\n // deposit eth and get weth \n\n if (msg.sender == owner) {\n\n TokenInterface(WETH_ADDRESS).deposit.value(address(this).balance)();\n\n }\n\n }\n\n}\n\ncontract AaveSaverTaker is DydxFlashLoanBase, ProxyPermission, GasBurner, SaverExchangeCore {\n\n\n\n address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n\n address payable public constant AAVE_RECEIVER = 0x969DfE84ac318531f13B731c7f21af9918802B94;\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n address public constant PROXY_REGISTRY_ADDRESS = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;\n\n\n\n function repay(ExchangeData memory _data, uint256 _gasCost) public payable {\n\n _flashLoan(_data, _gasCost, true);\n\n }\n\n\n\n function boost(ExchangeData memory _data, uint256 _gasCost) public payable {\n\n _flashLoan(_data, _gasCost, false);\n\n }\n\n\n\n /// @notice Starts the process to move users position 1 collateral and 1 borrow\n\n /// @dev User must send 2 wei with this transaction\n\n function _flashLoan(ExchangeData memory _data, uint _gasCost, bool _isRepay) internal {\n\n ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);\n\n\n\n uint256 ethAmount = ERC20(WETH_ADDR).balanceOf(SOLO_MARGIN_ADDRESS);\n\n\n\n // Get marketId from token address\n\n uint256 marketId = _getMarketIdFromTokenAddress(WETH_ADDR);\n\n\n\n // Calculate repay amount (_amount + (2 wei))\n\n // Approve transfer from\n\n uint256 repayAmount = _getRepaymentAmountInternal(ethAmount);\n\n ERC20(WETH_ADDR).approve(SOLO_MARGIN_ADDRESS, repayAmount);\n\n\n\n Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);\n\n\n\n operations[0] = _getWithdrawAction(marketId, ethAmount, AAVE_RECEIVER);\n\n AAVE_RECEIVER.transfer(msg.value);\n\n bytes memory encodedData = packExchangeData(_data);\n\n operations[1] = _getCallAction(\n\n abi.encode(encodedData, _gasCost, _isRepay, ethAmount, msg.value, proxyOwner(), address(this)),\n\n AAVE_RECEIVER\n\n );\n\n operations[2] = _getDepositAction(marketId, repayAmount, address(this));\n\n\n\n Account.Info[] memory accountInfos = new Account.Info[](1);\n\n accountInfos[0] = _getAccountInfo();\n\n\n\n givePermission(AAVE_RECEIVER);\n\n solo.operate(accountInfos, operations);\n\n removePermission(AAVE_RECEIVER);\n\n }\n\n}\n\ncontract CompoundLoanInfo is CompoundSafetyRatio {\n\n\n\n struct LoanData {\n\n address user;\n\n uint128 ratio;\n\n address[] collAddr;\n\n address[] borrowAddr;\n\n uint[] collAmounts;\n\n uint[] borrowAmounts;\n\n }\n\n\n\n struct TokenInfo {\n\n address cTokenAddress;\n\n address underlyingTokenAddress;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n struct TokenInfoFull {\n\n address underlyingTokenAddress;\n\n uint supplyRate;\n\n uint borrowRate;\n\n uint exchangeRate;\n\n uint marketLiquidity;\n\n uint totalSupply;\n\n uint totalBorrow;\n\n uint collateralFactor;\n\n uint price;\n\n }\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;\n\n\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _user Address of the user\n\n function getRatio(address _user) public view returns (uint) {\n\n // For each asset the account is in\n\n return getSafetyRatio(_user);\n\n }\n\n\n\n /// @notice Fetches Compound prices for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the prices\n\n /// @return prices Array of prices\n\n function getPrices(address[] memory _cTokens) public view returns (uint[] memory prices) {\n\n prices = new uint[](_cTokens.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n prices[i] = CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches Compound collateral factors for tokens\n\n /// @param _cTokens Arr. of cTokens for which to get the coll. factors\n\n /// @return collFactors Array of coll. factors\n\n function getCollFactors(address[] memory _cTokens) public view returns (uint[] memory collFactors) {\n\n collFactors = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; ++i) {\n\n (, collFactors[i]) = comp.markets(_cTokens[i]);\n\n }\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in usd\n\n /// @param _user Address of the user\n\n /// @return data LoanData information\n\n function getLoanData(address _user) public view returns (LoanData memory data) {\n\n address[] memory assets = comp.getAssetsIn(_user);\n\n address oracleAddr = comp.oracle();\n\n\n\n data = LoanData({\n\n user: _user,\n\n ratio: 0,\n\n collAddr: new address[](assets.length),\n\n borrowAddr: new address[](assets.length),\n\n collAmounts: new uint[](assets.length),\n\n borrowAmounts: new uint[](assets.length)\n\n });\n\n\n\n uint collPos = 0;\n\n uint borrowPos = 0;\n\n\n\n for (uint i = 0; i < assets.length; i++) {\n\n address asset = assets[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory oraclePrice;\n\n\n\n if (cTokenBalance != 0 || borrowBalance != 0) {\n\n oraclePrice = Exp({mantissa: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(asset)});\n\n }\n\n\n\n // Sum up collateral in Usd\n\n if (cTokenBalance != 0) {\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, Exp memory tokensToUsd) = mulExp(exchangeRate, oraclePrice);\n\n\n\n data.collAddr[collPos] = asset;\n\n (, data.collAmounts[collPos]) = mulScalarTruncate(tokensToUsd, cTokenBalance);\n\n collPos++;\n\n }\n\n\n\n // Sum up debt in Usd\n\n if (borrowBalance != 0) {\n\n data.borrowAddr[borrowPos] = asset;\n\n (, data.borrowAmounts[borrowPos]) = mulScalarTruncate(oraclePrice, borrowBalance);\n\n borrowPos++;\n\n }\n\n }\n\n\n\n data.ratio = uint128(getSafetyRatio(_user));\n\n\n\n return data;\n\n }\n\n\n\n function getTokenBalances(address _user, address[] memory _cTokens) public view returns (uint[] memory balances, uint[] memory borrows) {\n\n balances = new uint[](_cTokens.length);\n\n borrows = new uint[](_cTokens.length);\n\n\n\n for (uint i = 0; i < _cTokens.length; i++) {\n\n address asset = _cTokens[i];\n\n\n\n (, uint cTokenBalance, uint borrowBalance, uint exchangeRateMantissa)\n\n = CTokenInterface(asset).getAccountSnapshot(_user);\n\n\n\n Exp memory exchangeRate = Exp({mantissa: exchangeRateMantissa});\n\n (, balances[i]) = mulScalarTruncate(exchangeRate, cTokenBalance);\n\n\n\n borrows[i] = borrowBalance;\n\n }\n\n\n\n }\n\n\n\n /// @notice Fetches all the collateral/debt address and amounts, denominated in usd\n\n /// @param _users Addresses of the user\n\n /// @return loans Array of LoanData information\n\n function getLoanDataArr(address[] memory _users) public view returns (LoanData[] memory loans) {\n\n loans = new LoanData[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n loans[i] = getLoanData(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Calcualted the ratio of coll/debt for a compound user\n\n /// @param _users Addresses of the user\n\n /// @return ratios Array of ratios\n\n function getRatios(address[] memory _users) public view returns (uint[] memory ratios) {\n\n ratios = new uint[](_users.length);\n\n\n\n for (uint i = 0; i < _users.length; ++i) {\n\n ratios[i] = getSafetyRatio(_users[i]);\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfo[] memory tokens) {\n\n tokens = new TokenInfo[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfo({\n\n cTokenAddress: _cTokenAddresses[i],\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Information about cTokens\n\n /// @param _cTokenAddresses Array of cTokens addresses\n\n /// @return tokens Array of cTokens infomartion\n\n function getFullTokensInfo(address[] memory _cTokenAddresses) public returns(TokenInfoFull[] memory tokens) {\n\n tokens = new TokenInfoFull[](_cTokenAddresses.length);\n\n address oracleAddr = comp.oracle();\n\n\n\n for (uint i = 0; i < _cTokenAddresses.length; ++i) {\n\n (, uint collFactor) = comp.markets(_cTokenAddresses[i]);\n\n CTokenInterface cToken = CTokenInterface(_cTokenAddresses[i]);\n\n\n\n tokens[i] = TokenInfoFull({\n\n underlyingTokenAddress: getUnderlyingAddr(_cTokenAddresses[i]),\n\n supplyRate: cToken.supplyRatePerBlock(),\n\n borrowRate: cToken.borrowRatePerBlock(),\n\n exchangeRate: cToken.exchangeRateCurrent(),\n\n marketLiquidity: cToken.getCash(),\n\n totalSupply: cToken.totalSupply(),\n\n totalBorrow: cToken.totalBorrowsCurrent(),\n\n collateralFactor: collFactor,\n\n price: CompoundOracleInterface(oracleAddr).getUnderlyingPrice(_cTokenAddresses[i])\n\n });\n\n }\n\n }\n\n\n\n /// @notice Returns the underlying address of the cToken asset\n\n /// @param _cTokenAddress cToken address\n\n /// @return Token address of the cToken specified\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n}\n\ncontract CompLeverage is DFSExchangeCore, CompBalance {\n\n address public constant C_COMP_ADDR = 0x70e36f6BF80a52b3B46b3aF8e106CC0ed743E8e4;\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address public constant CETH_ADDRESS = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n address public constant COMPTROLLER_ADDR = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Should claim COMP and sell it to the specified token and deposit it back\n\n /// @param exchangeData Standard Exchange struct\n\n /// @param _cTokensSupply List of cTokens user is supplying\n\n /// @param _cTokensBorrow List of cTokens user is borrowing\n\n /// @param _cDepositAddr The cToken address of the asset you want to deposit\n\n /// @param _inMarket Flag if the cToken is used as collateral\n\n function claimAndSell(\n\n ExchangeData memory exchangeData,\n\n address[] memory _cTokensSupply,\n\n address[] memory _cTokensBorrow,\n\n address _cDepositAddr,\n\n bool _inMarket\n\n ) public payable {\n\n // Claim COMP token\n\n _claim(address(this), _cTokensSupply, _cTokensBorrow);\n\n\n\n uint compBalance = ERC20(COMP_ADDR).balanceOf(address(this));\n\n uint depositAmount = 0;\n\n\n\n // Exchange COMP\n\n if (exchangeData.srcAddr != address(0)) {\n\n exchangeData.dfsFeeDivider = 400; // 0.25%\n\n exchangeData.srcAmount = compBalance;\n\n\n\n (, depositAmount) = _sell(exchangeData);\n\n\n\n // if we have no deposit after, send back tokens to the user\n\n if (_cDepositAddr == address(0)) {\n\n if (exchangeData.destAddr != ETH_ADDRESS) {\n\n ERC20(exchangeData.destAddr).safeTransfer(msg.sender, depositAmount);\n\n } else {\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n }\n\n }\n\n\n\n // Deposit back a token\n\n if (_cDepositAddr != address(0)) {\n\n // if we are just depositing COMP without a swap\n\n if (_cDepositAddr == C_COMP_ADDR) {\n\n depositAmount = compBalance;\n\n }\n\n\n\n address tokenAddr = getUnderlyingAddr(_cDepositAddr);\n\n deposit(tokenAddr, _cDepositAddr, depositAmount, _inMarket);\n\n }\n\n\n\n logger.Log(address(this), msg.sender, \"CompLeverage\", abi.encode(compBalance, depositAmount, _cDepositAddr, exchangeData.destAmount));\n\n }\n\n\n\n function getUnderlyingAddr(address _cTokenAddress) internal returns (address) {\n\n if (_cTokenAddress == CETH_ADDRESS) {\n\n return ETH_ADDRESS;\n\n } else {\n\n return CTokenInterface(_cTokenAddress).underlying();\n\n }\n\n }\n\n\n\n function deposit(address _tokenAddr, address _cTokenAddr, uint _amount, bool _inMarket) public burnGas(5) payable {\n\n approveToken(_tokenAddr, _cTokenAddr);\n\n\n\n if (!_inMarket) {\n\n enterMarket(_cTokenAddr);\n\n }\n\n\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n require(CTokenInterface(_cTokenAddr).mint(_amount) == 0);\n\n } else {\n\n CEtherInterface(_cTokenAddr).mint{value: msg.value}(); // reverts on fail\n\n }\n\n }\n\n\n\n function enterMarket(address _cTokenAddr) public {\n\n address[] memory markets = new address[](1);\n\n markets[0] = _cTokenAddr;\n\n\n\n ComptrollerInterface(COMPTROLLER_ADDR).enterMarkets(markets);\n\n }\n\n\n\n function approveToken(address _tokenAddr, address _cTokenAddr) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeApprove(_cTokenAddr, uint(-1));\n\n }\n\n }\n\n}\n\ncontract CompoundCreateReceiver is FlashLoanReceiverBase, SaverExchangeCore {\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n ShifterRegistry public constant shifterRegistry = ShifterRegistry(0x2E82103bD91053C781aaF39da17aE58ceE39d0ab);\n\n\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n address payable public constant WALLET_ADDR = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;\n\n address public constant DISCOUNT_ADDR = 0x1b14E8D511c9A4395425314f849bD737BAF8208F;\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n constructor() public FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) {}\n\n\n\n struct CompCreateData {\n\n address payable proxyAddr;\n\n bytes proxyData;\n\n address cCollAddr;\n\n address cDebtAddr;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (CompCreateData memory compCreate, ExchangeData memory exchangeData)\n\n = packFunctionCall(_amount, _fee, _params);\n\n\n\n\n\n address leveragedAsset = _reserve;\n\n\n\n // If the assets are different\n\n if (compCreate.cCollAddr != compCreate.cDebtAddr) {\n\n (, uint sellAmount) = _sell(exchangeData);\n\n getFee(sellAmount, exchangeData.destAddr, compCreate.proxyAddr);\n\n\n\n leveragedAsset = exchangeData.destAddr;\n\n }\n\n\n\n // Send amount to DSProxy\n\n sendToProxy(compCreate.proxyAddr, leveragedAsset);\n\n\n\n address compOpenProxy = shifterRegistry.getAddr(\"COMP_SHIFTER\");\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(compCreate.proxyAddr).execute(compOpenProxy, compCreate.proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n // solhint-disable-next-line avoid-tx-origin\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (CompCreateData memory compCreate, ExchangeData memory exchangeData) {\n\n (\n\n uint[4] memory numData, // srcAmount, destAmount, minPrice, price0x\n\n address[6] memory cAddresses, // cCollAddr, cDebtAddr, srcAddr, destAddr, exchangeAddr, wrapper\n\n bytes memory callData,\n\n address proxy\n\n )\n\n = abi.decode(_params, (uint256[4],address[6],bytes,address));\n\n\n\n bytes memory proxyData = abi.encodeWithSignature(\n\n \"open(address,address,uint256)\",\n\n cAddresses[0], cAddresses[1], (_amount + _fee));\n\n\n\n exchangeData = SaverExchangeCore.ExchangeData({\n\n srcAddr: cAddresses[2],\n\n destAddr: cAddresses[3],\n\n srcAmount: numData[0],\n\n destAmount: numData[1],\n\n minPrice: numData[2],\n\n wrapper: cAddresses[5],\n\n exchangeAddr: cAddresses[4],\n\n callData: callData,\n\n price0x: numData[3]\n\n });\n\n\n\n compCreate = CompCreateData({\n\n proxyAddr: payable(proxy),\n\n proxyData: proxyData,\n\n cCollAddr: cAddresses[0],\n\n cDebtAddr: cAddresses[1]\n\n });\n\n\n\n return (compCreate, exchangeData);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n function sendToProxy(address payable _proxy, address _reserve) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, ERC20(_reserve).balanceOf(address(this)));\n\n } else {\n\n _proxy.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function getFee(uint _amount, address _tokenAddr, address _proxy) internal returns (uint feeAmount) {\n\n uint fee = 400;\n\n\n\n DSProxy proxy = DSProxy(payable(_proxy));\n\n address user = proxy.owner();\n\n\n\n if (Discount(DISCOUNT_ADDR).isCustomFeeSet(user)) {\n\n fee = Discount(DISCOUNT_ADDR).getCustomServiceFee(user);\n\n }\n\n\n\n feeAmount = (fee == 0) ? 0 : (_amount / fee);\n\n\n\n // fee can't go over 20% of the whole amount\n\n if (feeAmount > (_amount / 5)) {\n\n feeAmount = _amount / 5;\n\n }\n\n\n\n if (_tokenAddr == ETH_ADDRESS) {\n\n WALLET_ADDR.transfer(feeAmount);\n\n } else {\n\n ERC20(_tokenAddr).safeTransfer(WALLET_ADDR, feeAmount);\n\n }\n\n }\n\n\n\n // solhint-disable-next-line no-empty-blocks\n\n receive() external override(FlashLoanReceiverBase, SaverExchangeCore) payable {}\n\n}\n\ncontract CompoundSaverFlashLoan is FlashLoanReceiverBase, SaverExchangeCore {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address payable public COMPOUND_SAVER_FLASH_PROXY = 0xcEAb38B5C88F33Dabe4D31BDD384E08215526632;\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n address public owner;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (bytes memory proxyData, address payable proxyAddr) = packFunctionCall(_amount, _fee, _params);\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendLoanToProxy(proxyAddr, _reserve, _amount);\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(proxyAddr).execute(COMPOUND_SAVER_FLASH_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n /// @return proxyData Formated function call data\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (bytes memory proxyData, address payable) {\n\n (\n\n bytes memory exDataBytes,\n\n address[2] memory cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 gasCost,\n\n bool isRepay,\n\n address payable proxyAddr\n\n )\n\n = abi.decode(_params, (bytes,address[2],uint256,bool,address));\n\n\n\n ExchangeData memory _exData = unpackExchangeData(exDataBytes);\n\n\n\n uint[2] memory flashLoanData = [_amount, _fee];\n\n\n\n if (isRepay) {\n\n proxyData = abi.encodeWithSignature(\"flashRepay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n } else {\n\n proxyData = abi.encodeWithSignature(\"flashBoost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n }\n\n\n\n return (proxyData, proxyAddr);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n /// @param _amount Amount of tokens\n\n function sendLoanToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n receive() external override(SaverExchangeCore, FlashLoanReceiverBase) payable {}\n\n}\n\ncontract CompoundSaverFlashProxy is SaverExchangeCore, CompoundSaverHelper {\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Repays the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashRepay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n // draw max coll\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(maxColl) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // swap max coll + loanAmount\n\n _exData.srcAmount = maxColl + _flashLoanData[0];\n\n (,swapAmount) = _sell(_exData);\n\n\n\n // get fee\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = (maxColl + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // payback debt\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // draw collateral for loanAmount + loanFee\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(collToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CompoundRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Boosts the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashBoost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n // borrow max amount\n\n uint borrowAmount = getMaxBorrow(_cAddresses[1], address(this));\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // get dfs fee\n\n borrowAmount -= getFee((borrowAmount + _flashLoanData[0]), user, _gasCost, _cAddresses[1]);\n\n _exData.srcAmount = (borrowAmount + _flashLoanData[0]);\n\n\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = (borrowAmount + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // deposit swaped collateral\n\n depositCollateral(collToken, _cAddresses[0], swapAmount);\n\n\n\n // borrow token to repay flash loan\n\n require(CTokenInterface(_cAddresses[1]).borrow(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(borrowToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CompoundBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Helper method to deposit tokens in Compound\n\n /// @param _collToken Token address of the collateral\n\n /// @param _cCollToken CToken address of the collateral\n\n /// @param _depositAmount Amount to deposit\n\n function depositCollateral(address _collToken, address _cCollToken, uint _depositAmount) internal {\n\n approveCToken(_collToken, _cCollToken);\n\n\n\n if (_collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cCollToken).mint(_depositAmount) == 0);\n\n } else {\n\n CEtherInterface(_cCollToken).mint{value: _depositAmount}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice Returns the tokens/ether to the msg.sender which is the FL contract\n\n /// @param _tokenAddr Address of token which we return\n\n /// @param _amount Amount to return\n\n function returnFlashLoan(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, _amount);\n\n }\n\n\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n}\n\ncontract CompoundSaverProxy is CompoundSaverHelper, SaverExchangeCore {\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Withdraws collateral, converts to borrowed token and repays debt\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n uint collAmount = (_exData.srcAmount > maxColl) ? maxColl : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(collAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n _exData.srcAmount = collAmount;\n\n\n\n (, swapAmount) = _sell(_exData);\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = collAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CompoundRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Borrows token, converts to collateral, and adds to position\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint borrowAmount = (_exData.srcAmount > maxBorrow) ? maxBorrow : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n borrowAmount -= getFee(borrowAmount, user, _gasCost, _cAddresses[1]);\n\n\n\n _exData.srcAmount = borrowAmount;\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = borrowAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n approveCToken(collToken, _cAddresses[0]);\n\n\n\n if (collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cAddresses[0]).mint(swapAmount) == 0);\n\n } else {\n\n CEtherInterface(_cAddresses[0]).mint{value: swapAmount}(); // reverts on fail\n\n }\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CompoundBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n}\n\ncontract CreamSaverFlashLoan is FlashLoanReceiverBase, SaverExchangeCore {\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n address payable public COMPOUND_SAVER_FLASH_PROXY = 0x1e012554891d271eDc80ba8eB146EA5FF596fA51;\n\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n\n\n address public owner;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n constructor()\n\n FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER)\n\n public {\n\n owner = msg.sender;\n\n }\n\n\n\n /// @notice Called by Aave when sending back the FL amount\n\n /// @param _reserve The address of the borrowed token\n\n /// @param _amount Amount of FL tokens received\n\n /// @param _fee FL Aave fee\n\n /// @param _params The params that are sent from the original FL caller contract\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n // Format the call data for DSProxy\n\n (bytes memory proxyData, address payable proxyAddr) = packFunctionCall(_amount, _fee, _params);\n\n\n\n // Send Flash loan amount to DSProxy\n\n sendLoanToProxy(proxyAddr, _reserve, _amount);\n\n\n\n // Execute the DSProxy call\n\n DSProxyInterface(proxyAddr).execute(COMPOUND_SAVER_FLASH_PROXY, proxyData);\n\n\n\n // Repay the loan with the money DSProxy sent back\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n /// @notice Formats function data call so we can call it through DSProxy\n\n /// @param _amount Amount of FL\n\n /// @param _fee Fee of the FL\n\n /// @param _params Saver proxy params\n\n /// @return proxyData Formated function call data\n\n function packFunctionCall(uint _amount, uint _fee, bytes memory _params) internal pure returns (bytes memory proxyData, address payable) {\n\n (\n\n bytes memory exDataBytes,\n\n address[2] memory cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 gasCost,\n\n bool isRepay,\n\n address payable proxyAddr\n\n )\n\n = abi.decode(_params, (bytes,address[2],uint256,bool,address));\n\n\n\n ExchangeData memory _exData = unpackExchangeData(exDataBytes);\n\n\n\n uint[2] memory flashLoanData = [_amount, _fee];\n\n\n\n if (isRepay) {\n\n proxyData = abi.encodeWithSignature(\"flashRepay((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n } else {\n\n proxyData = abi.encodeWithSignature(\"flashBoost((address,address,uint256,uint256,uint256,address,address,bytes,uint256),address[2],uint256,uint256[2])\", _exData, cAddresses, gasCost, flashLoanData);\n\n }\n\n\n\n return (proxyData, proxyAddr);\n\n }\n\n\n\n /// @notice Send the FL funds received to DSProxy\n\n /// @param _proxy DSProxy address\n\n /// @param _reserve Token address\n\n /// @param _amount Amount of tokens\n\n function sendLoanToProxy(address payable _proxy, address _reserve, uint _amount) internal {\n\n if (_reserve != ETH_ADDRESS) {\n\n ERC20(_reserve).safeTransfer(_proxy, _amount);\n\n }\n\n\n\n _proxy.transfer(address(this).balance);\n\n }\n\n\n\n receive() external override(SaverExchangeCore, FlashLoanReceiverBase) payable {}\n\n}\n\ncontract CreamSaverFlashProxy is SaverExchangeCore, CreamSaverHelper {\n\n\n\n address public constant DEFISAVER_LOGGER = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126;\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n /// @notice Repays the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashRepay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n // draw max coll\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(maxColl) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // swap max coll + loanAmount\n\n _exData.srcAmount = maxColl + _flashLoanData[0];\n\n (,swapAmount) = _sell(_exData);\n\n\n\n // get fee\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = (maxColl + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // payback debt\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // draw collateral for loanAmount + loanFee\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(collToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CreamRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Boosts the position and sends tokens back for FL\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n /// @param _flashLoanData Data about FL [amount, fee]\n\n function flashBoost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost,\n\n uint[2] memory _flashLoanData // amount, fee\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n uint flashBorrowed = _flashLoanData[0] + _flashLoanData[1];\n\n\n\n // borrow max amount\n\n uint borrowAmount = getMaxBorrow(_cAddresses[1], address(this));\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n // get dfs fee\n\n borrowAmount -= getFee((borrowAmount + _flashLoanData[0]), user, _gasCost, _cAddresses[1]);\n\n _exData.srcAmount = (borrowAmount + _flashLoanData[0]);\n\n\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = (borrowAmount + _flashLoanData[0]);\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n // deposit swaped collateral\n\n depositCollateral(collToken, _cAddresses[0], swapAmount);\n\n\n\n // borrow token to repay flash loan\n\n require(CTokenInterface(_cAddresses[1]).borrow(flashBorrowed) == 0);\n\n\n\n // repay flash loan\n\n returnFlashLoan(borrowToken, flashBorrowed);\n\n\n\n DefisaverLogger(DEFISAVER_LOGGER).Log(address(this), msg.sender, \"CreamBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Helper method to deposit tokens in Compound\n\n /// @param _collToken Token address of the collateral\n\n /// @param _cCollToken CToken address of the collateral\n\n /// @param _depositAmount Amount to deposit\n\n function depositCollateral(address _collToken, address _cCollToken, uint _depositAmount) internal {\n\n approveCToken(_collToken, _cCollToken);\n\n\n\n if (_collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cCollToken).mint(_depositAmount) == 0);\n\n } else {\n\n CEtherInterface(_cCollToken).mint{value: _depositAmount}(); // reverts on fail\n\n }\n\n }\n\n\n\n /// @notice Returns the tokens/ether to the msg.sender which is the FL contract\n\n /// @param _tokenAddr Address of token which we return\n\n /// @param _amount Amount to return\n\n function returnFlashLoan(address _tokenAddr, uint _amount) internal {\n\n if (_tokenAddr != ETH_ADDRESS) {\n\n ERC20(_tokenAddr).safeTransfer(msg.sender, _amount);\n\n }\n\n\n\n msg.sender.transfer(address(this).balance);\n\n }\n\n\n\n}\n\ncontract CreamSaverProxy is CreamSaverHelper, SaverExchangeCore {\n\n\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n /// @notice Withdraws collateral, converts to borrowed token and repays debt\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repay(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n\n\n uint collAmount = (_exData.srcAmount > maxColl) ? maxColl : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[0]).redeemUnderlying(collAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n (, swapAmount) = _sell(_exData);\n\n swapAmount -= getFee(swapAmount, user, _gasCost, _cAddresses[1]);\n\n } else {\n\n swapAmount = collAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n paybackDebt(swapAmount, _cAddresses[1], borrowToken, user);\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CreamRepay\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n /// @notice Borrows token, converts to collateral, and adds to position\n\n /// @dev Called through the DSProxy\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses Coll/Debt addresses [cCollAddress, cBorrowAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boost(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable {\n\n enterMarket(_cAddresses[0], _cAddresses[1]);\n\n\n\n address payable user = payable(getUserAddress());\n\n\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint borrowAmount = (_exData.srcAmount > maxBorrow) ? maxBorrow : _exData.srcAmount;\n\n\n\n require(CTokenInterface(_cAddresses[1]).borrow(borrowAmount) == 0);\n\n\n\n address collToken = getUnderlyingAddr(_cAddresses[0]);\n\n address borrowToken = getUnderlyingAddr(_cAddresses[1]);\n\n\n\n uint swapAmount = 0;\n\n\n\n if (collToken != borrowToken) {\n\n borrowAmount -= getFee(borrowAmount, user, _gasCost, _cAddresses[1]);\n\n\n\n _exData.srcAmount = borrowAmount;\n\n (,swapAmount) = _sell(_exData);\n\n } else {\n\n swapAmount = borrowAmount;\n\n swapAmount -= getGasCost(swapAmount, _gasCost, _cAddresses[1]);\n\n }\n\n\n\n approveCToken(collToken, _cAddresses[0]);\n\n\n\n if (collToken != ETH_ADDRESS) {\n\n require(CTokenInterface(_cAddresses[0]).mint(swapAmount) == 0);\n\n } else {\n\n CEtherInterface(_cAddresses[0]).mint{value: swapAmount}(); // reverts on fail\n\n }\n\n\n\n // handle 0x fee\n\n tx.origin.transfer(address(this).balance);\n\n\n\n // log amount, collToken, borrowToken\n\n logger.Log(address(this), msg.sender, \"CreamBoost\", abi.encode(_exData.srcAmount, swapAmount, collToken, borrowToken));\n\n }\n\n\n\n}\n\ncontract SaverExchange is SaverExchangeCore, AdminAuth, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint256 public constant SERVICE_FEE = 800; // 0.125% Fee\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n uint public burnAmount = 10;\n\n\n\n /// @notice Takes a src amount of tokens and converts it into the dest token\n\n /// @dev Takes fee from the _srcAmount before the exchange\n\n /// @param exData [srcAddr, destAddr, srcAmount, destAmount, minPrice, exchangeType, exchangeAddr, callData, price0x]\n\n /// @param _user User address who called the exchange\n\n function sell(ExchangeData memory exData, address payable _user) public payable burnGas(burnAmount) {\n\n\n\n // take fee\n\n uint dfsFee = getFee(exData.srcAmount, exData.srcAddr);\n\n exData.srcAmount = sub(exData.srcAmount, dfsFee);\n\n\n\n // Perform the exchange\n\n (address wrapper, uint destAmount) = _sell(exData);\n\n\n\n // send back any leftover ether or tokens\n\n sendLeftover(exData.srcAddr, exData.destAddr, _user);\n\n\n\n // log the event\n\n logger.Log(address(this), msg.sender, \"ExchangeSell\", abi.encode(wrapper, exData.srcAddr, exData.destAddr, exData.srcAmount, destAmount));\n\n }\n\n\n\n /// @notice Takes a dest amount of tokens and converts it from the src token\n\n /// @dev Send always more than needed for the swap, extra will be returned\n\n /// @param exData [srcAddr, destAddr, srcAmount, destAmount, minPrice, exchangeType, exchangeAddr, callData, price0x]\n\n /// @param _user User address who called the exchange\n\n function buy(ExchangeData memory exData, address payable _user) public payable burnGas(burnAmount){\n\n\n\n uint dfsFee = getFee(exData.srcAmount, exData.srcAddr);\n\n exData.srcAmount = sub(exData.srcAmount, dfsFee);\n\n\n\n // Perform the exchange\n\n (address wrapper, uint srcAmount) = _buy(exData);\n\n\n\n // send back any leftover ether or tokens\n\n sendLeftover(exData.srcAddr, exData.destAddr, _user);\n\n\n\n // log the event\n\n logger.Log(address(this), msg.sender, \"ExchangeBuy\", abi.encode(wrapper, exData.srcAddr, exData.destAddr, srcAmount, exData.destAmount));\n\n\n\n }\n\n\n\n /// @notice Takes a feePercentage and sends it to wallet\n\n /// @param _amount Dai amount of the whole trade\n\n /// @param _token Address of the token\n\n /// @return feeAmount Amount in Dai owner earned on the fee\n\n function getFee(uint256 _amount, address _token) internal returns (uint256 feeAmount) {\n\n uint256 fee = SERVICE_FEE;\n\n\n\n if (Discount(DISCOUNT_ADDRESS).isCustomFeeSet(msg.sender)) {\n\n fee = Discount(DISCOUNT_ADDRESS).getCustomServiceFee(msg.sender);\n\n }\n\n\n\n if (fee == 0) {\n\n feeAmount = 0;\n\n } else {\n\n feeAmount = _amount / fee;\n\n if (_token == KYBER_ETH_ADDRESS) {\n\n WALLET_ID.transfer(feeAmount);\n\n } else {\n\n ERC20(_token).safeTransfer(WALLET_ID, feeAmount);\n\n }\n\n }\n\n }\n\n\n\n /// @notice Changes the amount of gas token we burn for each call\n\n /// @dev Only callable by the owner\n\n /// @param _newBurnAmount New amount of gas tokens to be burned\n\n function changeBurnAmount(uint _newBurnAmount) public {\n\n require(owner == msg.sender);\n\n\n\n burnAmount = _newBurnAmount;\n\n }\n\n\n\n}\n\ncontract DFSExchange is DFSExchangeCore, AdminAuth, GasBurner {\n\n\n\n using SafeERC20 for ERC20;\n\n\n\n uint256 public constant SERVICE_FEE = 800; // 0.125% Fee\n\n\n\n // solhint-disable-next-line const-name-snakecase\n\n DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);\n\n\n\n uint public burnAmount = 10;\n\n\n\n /// @notice Takes a src amount of tokens and converts it into the dest token\n\n /// @dev Takes fee from the _srcAmount before the exchange\n\n /// @param exData [srcAddr, destAddr, srcAmount, destAmount, minPrice, exchangeType, exchangeAddr, callData, price0x]\n\n /// @param _user User address who called the exchange\n\n function sell(ExchangeData memory exData, address payable _user) public payable burnGas(burnAmount) {\n\n\n\n exData.dfsFeeDivider = SERVICE_FEE;\n\n\n\n // Perform the exchange\n\n (address wrapper, uint destAmount) = _sell(exData);\n\n\n\n // send back any leftover ether or tokens\n\n sendLeftover(exData.srcAddr, exData.destAddr, _user);\n\n\n\n // log the event\n\n logger.Log(address(this), msg.sender, \"ExchangeSell\", abi.encode(wrapper, exData.srcAddr, exData.destAddr, exData.srcAmount, destAmount));\n\n }\n\n\n\n /// @notice Takes a dest amount of tokens and converts it from the src token\n\n /// @dev Send always more than needed for the swap, extra will be returned\n\n /// @param exData [srcAddr, destAddr, srcAmount, destAmount, minPrice, exchangeType, exchangeAddr, callData, price0x]\n\n /// @param _user User address who called the exchange\n\n function buy(ExchangeData memory exData, address payable _user) public payable burnGas(burnAmount){\n\n\n\n exData.dfsFeeDivider = SERVICE_FEE;\n\n\n\n // Perform the exchange\n\n (address wrapper, uint srcAmount) = _buy(exData);\n\n\n\n // send back any leftover ether or tokens\n\n sendLeftover(exData.srcAddr, exData.destAddr, _user);\n\n\n\n // log the event\n\n logger.Log(address(this), msg.sender, \"ExchangeBuy\", abi.encode(wrapper, exData.srcAddr, exData.destAddr, srcAmount, exData.destAmount));\n\n\n\n }\n\n\n\n /// @notice Changes the amount of gas token we burn for each call\n\n /// @dev Only callable by the owner\n\n /// @param _newBurnAmount New amount of gas tokens to be burned\n\n function changeBurnAmount(uint _newBurnAmount) public {\n\n require(owner == msg.sender);\n\n\n\n burnAmount = _newBurnAmount;\n\n }\n\n\n\n}\n\ncontract MCDSaverFlashLoan is MCDSaverProxy, AdminAuth, FlashLoanReceiverBase {\n\n\n\n ILendingPoolAddressesProvider public LENDING_POOL_ADDRESS_PROVIDER = ILendingPoolAddressesProvider(0x24a42fD28C976A61Df5D00D0599C34c4f90748c8);\n\n\n\n constructor() FlashLoanReceiverBase(LENDING_POOL_ADDRESS_PROVIDER) public {}\n\n\n\n struct SaverData {\n\n uint cdpId;\n\n uint gasCost;\n\n uint loanAmount;\n\n uint fee;\n\n address joinAddr;\n\n }\n\n\n\n function executeOperation(\n\n address _reserve,\n\n uint256 _amount,\n\n uint256 _fee,\n\n bytes calldata _params)\n\n external override {\n\n\n\n //check the contract has the specified balance\n\n require(_amount <= getBalanceInternal(address(this), _reserve),\n\n \"Invalid balance for the contract\");\n\n\n\n (\n\n bytes memory exDataBytes,\n\n uint cdpId,\n\n uint gasCost,\n\n address joinAddr,\n\n bool isRepay\n\n )\n\n = abi.decode(_params, (bytes,uint256,uint256,address,bool));\n\n\n\n ExchangeData memory exchangeData = unpackExchangeData(exDataBytes);\n\n\n\n SaverData memory saverData = SaverData({\n\n cdpId: cdpId,\n\n gasCost: gasCost,\n\n loanAmount: _amount,\n\n fee: _fee,\n\n joinAddr: joinAddr\n\n });\n\n\n\n if (isRepay) {\n\n repayWithLoan(exchangeData, saverData);\n\n } else {\n\n boostWithLoan(exchangeData, saverData);\n\n }\n\n\n\n transferFundsBackToPoolInternal(_reserve, _amount.add(_fee));\n\n\n\n // if there is some eth left (0x fee), return it to user\n\n if (address(this).balance > 0) {\n\n tx.origin.transfer(address(this).balance);\n\n }\n\n }\n\n\n\n function boostWithLoan(\n\n ExchangeData memory _exchangeData,\n\n SaverData memory _saverData\n\n ) internal {\n\n\n\n address user = getOwner(manager, _saverData.cdpId);\n\n\n\n // Draw users Dai\n\n uint maxDebt = getMaxDebt(_saverData.cdpId, manager.ilks(_saverData.cdpId));\n\n uint daiDrawn = drawDai(_saverData.cdpId, manager.ilks(_saverData.cdpId), maxDebt);\n\n\n\n // Swap\n\n _exchangeData.srcAmount = daiDrawn + _saverData.loanAmount - takeFee(_saverData.gasCost, daiDrawn + _saverData.loanAmount);\n\n _exchangeData.user = user;\n\n _exchangeData.dfsFeeDivider = isAutomation() ? AUTOMATIC_SERVICE_FEE : MANUAL_SERVICE_FEE;\n\n (, uint swapedAmount) = _sell(_exchangeData);\n\n\n\n // Return collateral\n\n addCollateral(_saverData.cdpId, _saverData.joinAddr, swapedAmount);\n\n\n\n // Draw Dai to repay the flash loan\n\n drawDai(_saverData.cdpId, manager.ilks(_saverData.cdpId), (_saverData.loanAmount + _saverData.fee));\n\n\n\n logger.Log(address(this), msg.sender, \"MCDFlashBoost\", abi.encode(_saverData.cdpId, user, _exchangeData.srcAmount, swapedAmount));\n\n }\n\n\n\n function repayWithLoan(\n\n ExchangeData memory _exchangeData,\n\n SaverData memory _saverData\n\n ) internal {\n\n\n\n address user = getOwner(manager, _saverData.cdpId);\n\n bytes32 ilk = manager.ilks(_saverData.cdpId);\n\n\n\n // Draw collateral\n\n uint maxColl = getMaxCollateral(_saverData.cdpId, ilk, _saverData.joinAddr);\n\n uint collDrawn = drawCollateral(_saverData.cdpId, _saverData.joinAddr, maxColl);\n\n\n\n // Swap\n\n _exchangeData.srcAmount = (_saverData.loanAmount + collDrawn);\n\n _exchangeData.user = user;\n\n _exchangeData.dfsFeeDivider = isAutomation() ? AUTOMATIC_SERVICE_FEE : MANUAL_SERVICE_FEE;\n\n (, uint paybackAmount) = _sell(_exchangeData);\n\n\n\n paybackAmount -= takeFee(_saverData.gasCost, paybackAmount);\n\n paybackAmount = limitLoanAmount(_saverData.cdpId, ilk, paybackAmount, user);\n\n\n\n // Payback the debt\n\n paybackDebt(_saverData.cdpId, ilk, paybackAmount, user);\n\n\n\n // Draw collateral to repay the flash loan\n\n drawCollateral(_saverData.cdpId, _saverData.joinAddr, (_saverData.loanAmount + _saverData.fee));\n\n\n\n logger.Log(address(this), msg.sender, \"MCDFlashRepay\", abi.encode(_saverData.cdpId, user, _exchangeData.srcAmount, paybackAmount));\n\n }\n\n\n\n /// @notice Handles that the amount is not bigger than cdp debt and not dust\n\n function limitLoanAmount(uint _cdpId, bytes32 _ilk, uint _paybackAmount, address _owner) internal returns (uint256) {\n\n uint debt = getAllDebt(address(vat), manager.urns(_cdpId), manager.urns(_cdpId), _ilk);\n\n\n\n if (_paybackAmount > debt) {\n\n ERC20(DAI_ADDRESS).transfer(_owner, (_paybackAmount - debt));\n\n return debt;\n\n }\n\n\n\n uint debtLeft = debt - _paybackAmount;\n\n\n\n (,,,, uint dust) = vat.ilks(_ilk);\n\n dust = dust / 10**27;\n\n\n\n // Less than dust value\n\n if (debtLeft < dust) {\n\n uint amountOverDust = (dust - debtLeft);\n\n\n\n ERC20(DAI_ADDRESS).transfer(_owner, amountOverDust);\n\n\n\n return (_paybackAmount - amountOverDust);\n\n }\n\n\n\n return _paybackAmount;\n\n }\n\n\n\n receive() external override(FlashLoanReceiverBase, DFSExchangeCore) payable {}\n\n\n\n}\n\ncontract CompoundFlashLoanTaker is CompoundSaverProxy, ProxyPermission, GasBurner {\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_SAVER_FLASH_LOAN = 0xCeB190A35D9D4804b9CE8d0CF79239f6949BfCcB;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n /// @notice Repays the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repayWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(25) {\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxColl || availableLiquidity == 0) {\n\n repay(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxColl);\n\n if (loanAmount > availableLiquidity) loanAmount = availableLiquidity;\n\n bytes memory encoded = packExchangeData(_exData);\n\n bytes memory paramsData = abi.encode(encoded, _cAddresses, _gasCost, true, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[0]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundFlashRepay\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[0]));\n\n }\n\n }\n\n\n\n /// @notice Boosts the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boostWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(20) {\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxBorrow || availableLiquidity == 0) {\n\n boost(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxBorrow);\n\n if (loanAmount > availableLiquidity) loanAmount = availableLiquidity;\n\n bytes memory paramsData = abi.encode(packExchangeData(_exData), _cAddresses, _gasCost, false, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[1]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CompoundFlashBoost\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[1]));\n\n }\n\n\n\n }\n\n\n\n function getAvailableLiquidity(address _tokenAddr) internal view returns (uint liquidity) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(_tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n }\n\n}\n\ncontract CreamFlashLoanTaker is CreamSaverProxy, ProxyPermission, GasBurner {\n\n ILendingPool public constant lendingPool = ILendingPool(0x398eC7346DcD622eDc5ae82352F02bE94C62d119);\n\n\n\n address payable public constant COMPOUND_SAVER_FLASH_LOAN = 0x3ceD2067c0B057611e4E2686Dbe40028962Cc625;\n\n address public constant AAVE_POOL_CORE = 0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3;\n\n\n\n /// @notice Repays the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function repayWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(25) {\n\n uint maxColl = getMaxCollateral(_cAddresses[0], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxColl || availableLiquidity == 0) {\n\n repay(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxColl);\n\n bytes memory encoded = packExchangeData(_exData);\n\n bytes memory paramsData = abi.encode(encoded, _cAddresses, _gasCost, true, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[0]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamFlashRepay\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[0]));\n\n }\n\n }\n\n\n\n /// @notice Boosts the position with it's own fund or with FL if needed\n\n /// @param _exData Exchange data\n\n /// @param _cAddresses cTokens addreses and exchange [cCollAddress, cBorrowAddress, exchangeAddress]\n\n /// @param _gasCost Gas cost for specific transaction\n\n function boostWithLoan(\n\n ExchangeData memory _exData,\n\n address[2] memory _cAddresses, // cCollAddress, cBorrowAddress\n\n uint256 _gasCost\n\n ) public payable burnGas(20) {\n\n uint maxBorrow = getMaxBorrow(_cAddresses[1], address(this));\n\n uint availableLiquidity = getAvailableLiquidity(_exData.srcAddr);\n\n\n\n if (_exData.srcAmount <= maxBorrow || availableLiquidity == 0) {\n\n boost(_exData, _cAddresses, _gasCost);\n\n } else {\n\n // 0x fee\n\n COMPOUND_SAVER_FLASH_LOAN.transfer(msg.value);\n\n\n\n uint loanAmount = (_exData.srcAmount - maxBorrow);\n\n bytes memory paramsData = abi.encode(packExchangeData(_exData), _cAddresses, _gasCost, false, address(this));\n\n\n\n givePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n lendingPool.flashLoan(COMPOUND_SAVER_FLASH_LOAN, getUnderlyingAddr(_cAddresses[1]), loanAmount, paramsData);\n\n\n\n removePermission(COMPOUND_SAVER_FLASH_LOAN);\n\n\n\n logger.Log(address(this), msg.sender, \"CreamFlashBoost\", abi.encode(loanAmount, _exData.srcAmount, _cAddresses[1]));\n\n }\n\n\n\n }\n\n\n\n function getAvailableLiquidity(address _tokenAddr) internal view returns (uint liquidity) {\n\n if (_tokenAddr == KYBER_ETH_ADDRESS) {\n\n liquidity = AAVE_POOL_CORE.balance;\n\n } else {\n\n liquidity = ERC20(_tokenAddr).balanceOf(AAVE_POOL_CORE);\n\n }\n\n 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Unnamed: 0 int64 0 60k | address stringlengths 42 42 | source_code stringlengths 52 864k | bytecode stringlengths 2 49.2k | slither stringlengths 47 956 | success bool 1
class | error float64 | results stringlengths 2 911 | input_ids listlengths 128 128 | attention_mask listlengths 128 128 |
|---|---|---|---|---|---|---|---|---|---|
500 | 0xAE31fA90EEc26961FC2257c896Da7AFC68493716 | pragma solidity 0.6.10;
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view retu... | 0x608060405234801561001057600080fd5b506004361061004c5760003560e01c806393b9740a14610051578063c029e8681461006f578063c2412676146100b9578063fd22103114610103575b600080fd5b61005961010d565b6040518082815260200191505060405180910390f35b610077610113565b604051808273ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffff... | {"success": true, "error": null, "results": {"detectors": [{"check": "unchecked-transfer", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}]} | [
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501 | 0xae9cbe6ebf72a51c9fcea3830485614486318fd4 | pragma solidity 0.4.21;
contract EIP20Interface {
/* This is a slight change to the ERC20 base standard.
function totalSupply() constant returns (uint256 supply);
is replaced with:
uint256 public totalSupply;
This automatically creates a getter function for the totalSupply.
This is moved ... | 0x6060604052600436106100af576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100b4578063095ea7b31461014257806318160ddd1461019c57806323b872dd146101c557806327e235e31461023e578063313ce5671461028b5780635c658165146102ba57806370a082311461032657806395d89b4114610373578063a9059cbb... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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502 | 0xaeBdBBEc6a0A44dae994cd82675eb26ACEC19Df9 | pragma solidity 0.6.8;
pragma experimental ABIEncoderV2;
contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/... | 0x73aebdbbec6a0a44dae994cd82675eb26acec19df930146080604052600436106100925760003560e01c8063567d1ebf11610065578063567d1ebf146100fc578063a385fb9614610104578063d7cc2a031461010c578063e6092ca61461012c57610092565b8063030293b2146100975780630f12fd2b146100c057806346784971146100d35780634cfea68a146100f4575b600080fd5b6100aa6100a536... | {"success": true, "error": null, "results": {"detectors": [{"check": "uninitialized-state", "impact": "High", "confidence": "High"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality"... | true | null | {'detectors': [{'check': 'uninitialized-state', 'impact': 'High', 'confidence': 'High'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'},... | [
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503 | 0xaeda53544201731426b6e07cfe3b396e0a1d40dd | pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a... | 0x608060405234801561001057600080fd5b50600436106100cf5760003560e01c8063a795d2931161008c578063ca15c87311610066578063ca15c8731461022f578063d547741f1461024c578063eb5f533b14610278578063f5b98f411461029b576100cf565b8063a795d293146101e4578063b39e12cf14610201578063c4d66de814610209576100cf565b8063248a9ca3146100d45780632f2ff15d14... | {"success": true, "error": null, "results": {"detectors": [{"check": "write-after-write", "impact": "Medium", "confidence": "High"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "reentrancy-no-eth", ... | true | null | {'detectors': [{'check': 'write-after-write', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}]... | [
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504 | 0xb08ad45aeec745466c4cd45f87ee197794e156c4 | pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
contract IAbacusOracle{
uint public callFee;
function getJobResponse(uint64 _jobId) public view returns(uint64[] memory _values){ }
function scheduleFunc(address to ,uint callTime, bytes memory data , uint fee , uint gaslimit ,uint gasprice... | 0x6080604052600436106101185760003560e01c80638da5cb5b116100a0578063d4001a0511610064578063d4001a05146102bf578063e0059b31146102ec578063f7f56d631461030c578063fd950f751461032c578063fea6884d1461033f5761011f565b80638da5cb5b1461021b578063a6f9dae11461023d578063b734c0f41461025d578063bc01b2ba14610272578063c012aa3a146102925761011f... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "imp... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'che... | [
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505 | 0xB09CB135726F30D4750087689509BF133CaA43fe | pragma solidity 0.7.4;
enum MathError { NO_ERROR, DIVISION_BY_ZERO, INTEGER_OVERFLOW, INTEGER_UNDERFLOW, MODULO_BY_ZERO }
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function ret... | 0x608060405234801561001057600080fd5b50600436106101a95760003560e01c8063a0642c9c116100f9578063d476910411610097578063e6abb5ae11610071578063e6abb5ae14610566578063e79628ab1461058c578063f851a440146105b2578063fa23f21a146105ba576101a9565b8063d4769104146104ec578063d59f3f5314610512578063e60f077314610540576101a9565b8063bb23ffec11... | {"success": true, "error": null, "results": {"detectors": [{"check": "unused-return", "impact": "Medium", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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506 | 0xB0A6c00ed4D68BEFB869Ae1e697c28a923C5D7a2 | pragma solidity 0.5.12;
interface IERC1820Implementer {
function canImplementInterfaceForAddress(bytes32 interfaceHash, address account) external view returns (bytes32);
}
interface IERC1820Registry {
/**
* @dev Sets `newManager` as the manager for `account`. A manager of an
* account is able to ... | 0x608060405234801561001057600080fd5b506004361061018e5760003560e01c80638da5cb5b116100de578063d95b637111610097578063e0732ae511610071578063e0732ae514610b23578063fad8b32a14610b67578063fc673c4f14610bab578063fe9d930314610ca35761018e565b8063d95b6371146109d3578063dd62ed3e14610a4f578063dfd361a114610ac75761018e565b80638da5cb5b14... | {"success": true, "error": null, "results": {"detectors": [{"check": "controlled-array-length", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'controlled-array-length', 'impact': 'High', 'confidence': 'Medium'}]} | [
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507 | 0xb0b6f45653e6532faab164d366d52b9512e63ad4 | pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
contract IAbacusOracle{
uint public callFee;
function getJobResponse(uint64 _jobId) public view returns(uint64[] memory _values){ }
function scheduleFunc(address to ,uint callTime, bytes memory data , uint fee , uint gaslimit ,uint gasprice... | 0x608060405234801561001057600080fd5b50600436106101c45760003560e01c8063a87430ba116100f9578063e0059b3111610097578063ec020d4511610071578063ec020d45146103ed578063f1d80b891461040d578063f5da23ab14610420578063fd90d09714610433576101c4565b8063e0059b31146103b4578063e364db92146103c7578063e86ef40b146103da576101c4565b8063c012aa3a11... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "imp... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'che... | [
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508 | 0xB11822C35a5Ffda4b569E93173CB1fA865D6A666 | pragma solidity 0.6.5;
interface LandToken {
function mintQuad(
address to,
uint256 size,
uint256 x,
uint256 y,
bytes calldata data
) external;
}
contract Admin {
address internal _admin;
/// @dev emitted when the contract administrator is changed.
... | 0x608060405234801561001057600080fd5b50600436106101515760003560e01c8063984d6252116100cd578063dc5074af11610081578063ecb255b511610066578063ecb255b514610857578063f23a6e6114610874578063f2e7b3811461090957610151565b8063dc5074af14610814578063e56f8a9e1461083a57610151565b8063bc197c81116100b2578063bc197c81146105d3578063c10a420814... | {"success": true, "error": null, "results": {"detectors": [{"check": "arbitrary-send", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}]} | [
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509 | 0xb177bd7919c399dde531744a20d5078baa1ecff2 | pragma solidity 0.7.2;
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () { }
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal... | 0x608060405234801561001057600080fd5b50600436106102485760003560e01c806373f425611161013b57806395d89b41116100b8578063beaca0e11161007c578063beaca0e114610b10578063d5abeb0114610b2e578063dd62ed3e14610b4c578063e2b52bee14610bc4578063e7d260aa14610bf457610248565b806395d89b411461093f5780639eb50f1b146109c2578063a0712d6814610a1a5780... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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510 | 0xb1d765ee23d410a72773fedb38cbc4e39b01e24f | pragma solidity 0.6.12;
kenAddress,
string TokenName,
string TokenSymbol,
uint Decimals
);
function updateEcoceliumAddress(address ecoAddress) public {
require(msg.sender == owner);
EcoceliumAddress = ecoAddress;
f
rivate view... | 0x608060405234801561001057600080fd5b50600436106101da5760003560e01c80638b42426711610104578063b4e33963116100a2578063db775ec311610071578063db775ec314610b1d578063e333024e14610b5f578063e5361ea914610c24578063ff8eefea14610cdd576101da565b8063b4e33963146109a7578063cd68ea1914610a4b578063d5db72eb14610a53578063d8e146e214610a795761... | {"success": true, "error": null, "results": {"detectors": [{"check": "uninitialized-state", "impact": "High", "confidence": "High"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "erc20-interface", "... | true | null | {'detectors': [{'check': 'uninitialized-state', 'impact': 'High', 'confidence': 'High'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'... | [
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511 | 0xb1D89477d1b505C261bab6e73f08fA834544CD21 | pragma solidity 0.6.6;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - s... | 0x608060405234801561001057600080fd5b50600436106100885760003560e01c80638678a7b21161005b5780638678a7b21461011a5780638da5cb5b146101455780639d2a5f9814610169578063f2fde38b1461019e57610088565b80630d37b5371461008d57806319c2b4c3146100b85780633a19b9bc146100d9578063715018a614610110575b600080fd5b6100956101c4565b604080516001600160... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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512 | 0xB1e9157c2Fdcc5a856C8DA8b2d89b6C32b3c1229 | pragma solidity 0.6.2;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
*... | 0x608060405234801561001057600080fd5b50600436106100b45760003560e01c806370a082311161007157806370a08231146102d0578063893d20e81461032857806395d89b4114610372578063a457c2d7146103f5578063a9059cbb1461045b578063dd62ed3e146104c1576100b4565b806306fdde03146100b9578063095ea7b31461013c57806318160ddd146101a257806323b872dd146101c05780... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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513 | 0xb200a7200F14b97Ba4D970943aAD4410A54CA8EF | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106101e75760003560e01c80635684e3e511610102578063a59a997311610095578063d3661fa511610064578063d3661fa514610307578063e074bb4714610485578063f24ccbfe146104a5578063f708847b146104ba576101ee565b8063a59a997314610446578063a734f06e14610288578063c91d59fe1461045b578063d0cc728914610470576101ee565b80638823151b116100... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confiden... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowleve... | [
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514 | 0xb2133d170b3bcab71358fc4eb2f95a384e5d328a | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
interface ERC20 {
function approve(address, uint256) external returns (bool);
function transfer(address, uint256) external returns (bool);
function transferFrom(address, address, uint256) external returns (bool);
function name() external view... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c806330fa738c14610046578063d4fac45d14610064578063f72c079114610084575b600080fd5b61004e61008c565b60405161005b91906102e1565b60405180910390f35b610077610072366004610274565b6100c5565b60405161005b9190610352565b61004e610217565b604051806040016040528060058152602001... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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515 | 0xb252c48376Ae6018B041a42319637D1e5bf8aCD1 | pragma solidity 0.5.16;
contract CarefulMath {
/**
* @dev Possible error codes that we can return
*/
enum MathError {
NO_ERROR,
DIVISION_BY_ZERO,
INTEGER_OVERFLOW,
INTEGER_UNDERFLOW
}
/**
* @dev Multiplies two numbers, returns an error on ove... | 0x608060405234801561001057600080fd5b50600436106100365760003560e01c806358326b7a1461003b578063704b6c021461005a575b600080fd5b6100586004803603602081101561005157600080fd5b5035610080565b005b6100586004803603602081101561007057600080fd5b50356001600160a01b0316610384565b6003546001546001600160a01b03918216911633146100d0576040516246... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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516 | 0xb27E93A88Efe98A9be54560e1Dda51F62Eb9e8A6 | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106101d85760003560e01c806379521f0211610102578063c91d59fe11610095578063e9bb84c211610064578063e9bb84c2146104a7578063ec23ef27146104c7578063f24ccbfe146104dc578063f851a440146104f1576101d8565b8063c91d59fe146102c2578063d98bb5b114610452578063deca5f8814610472578063e3bbb4f114610492576101d8565b8063a56f9718116100... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confiden... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowleve... | [
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1... |
517 | 0xb2B3c885C6E2D72E0bc28e944Ff3f67c236c7e69 | pragma solidity 0.5.15;
library Addresses {
function isContract(address account) internal view returns (bool) {
uint256 size;
// solium-disable-next-line security/no-inline-assembly
assembly {
size := extcodesize(account)
}
return size > 0;
}
f... | 0x608060405234801561001057600080fd5b506004361061018e5760003560e01c806372eb3688116100e45780639e3adac4116100925780639e3adac414610446578063a1cc921e14610475578063b76631121461049b578063c23b60ef146104a3578063dd7202d814610520578063e6de62821461053d578063eeb7286614610545578063f288a3ff1461054d5761018e565b806372eb3688146103d25780... | {"success": true, "error": null, "results": {"detectors": [{"check": "uninitialized-state", "impact": "High", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'uninitialized-state', 'impact': 'High', 'confidence': 'High'}]} | [
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518 | 0xb2be281e8b11b47fec825973fc8bb95332022a54 | pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
struct FullAbsoluteTokenAmount {
AbsoluteTokenAmountMeta base;
AbsoluteTokenAmountMeta[] underlying;
}
struct AbsoluteTokenAmountMeta {
AbsoluteTokenAmount absoluteTokenAmount;
ERC20Metadata erc20metadata;
}
struct ERC20Metadata {
s... | 0x6080604052600436106100c75760003560e01c80638da5cb5b11610074578063e6096b4d1161004e578063e6096b4d146101e3578063e89db67114610203578063f2f4eb2614610223576100c7565b80638da5cb5b1461018c578063a4592161146101ae578063e30c3978146101ce576100c7565b8063710bf322116100a5578063710bf3221461014257806379ba5097146101645780638042c01f146101... | {"success": true, "error": null, "results": {"detectors": [{"check": "controlled-delegatecall", "impact": "High", "confidence": "Medium"}, {"check": "arbitrary-send", "impact": "High", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "delegatecall-loop", "imp... | true | null | {'detectors': [{'check': 'controlled-delegatecall', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'delegatecall-loop', 'impact': 'High', 'confidence': 'Medium'}, {'che... | [
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519 | 0xB2DC5571f477b1C5b36509a71013BFedD9Cc492F | pragma solidity 0.6.6;
contract VRFRequestIDBase {
/**
* @notice returns the seed which is actually input to the VRF coordinator
*
* @dev To prevent repetition of VRF output due to repetition of the
* @dev user-supplied seed, that seed is combined in a hash with the
* @dev user-specific nonce,... | 0x608060405234801561001057600080fd5b506004361061010b5760003560e01c80638678a7b2116100a25780639e317f12116100715780639e317f121461028e578063dc6cfe10146102ab578063ddca3f43146102d4578063e2d84e23146102dc578063f2fde38b146102e45761010b565b80638678a7b2146101f95780638da5cb5b1461022457806394985ddd146102485780639d2a5f981461026b5761... | {"success": true, "error": null, "results": {"detectors": [{"check": "unused-return", "impact": "Medium", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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520 | 0xb32fb6b4807fba07087016bd763955385739d14c | pragma solidity 0.6.12;
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
... | 0x6080604052600436106100c65760003560e01c806340c10f191161007f578063a457c2d711610059578063a457c2d714610486578063a9059cbb146104f7578063ab6ac11a14610568578063dd62ed3e14610572576100d5565b806340c10f191461033657806370a082311461039157806395d89b41146103f6576100d5565b806306fdde03146100da578063095ea7b31461016a57806318160ddd146101... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "unchecked-transfer", "impac... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}, {'check... | [
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521 | 0xb3775fb83f7d12a36e0475abdd1fca35c091efbe | pragma solidity 0.4.20;
contract Hourglass {
/*=================================
= MODIFIERS =
=================================*/
// only people with tokens
modifier onlyBagholders() {
require(myTokens() > 0);
_;
}
// only peop... | 0x60606040526004361061015d5763ffffffff7c010000000000000000000000000000000000000000000000000000000060003504166265318b811461016b57806306fdde031461019c57806310d0ffdd1461022657806318160ddd1461023c578063226093731461024f57806327defa1f14610265578063313ce5671461028c578063392efb52146102b55780633ccfd60b146102cb5780634b7503341461... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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522 | 0xb4012544e8adb374cd68be1cac1e1ba624920cbc | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
struct ProtocolBalance {
ProtocolMetadata metadata;
AdapterBalance[] adapterBalances;
}
struct ProtocolMetadata {
string name;
string description;
string websiteURL;
string iconURL;
uint256 version;
}
struct AdapterBalance ... | 0x608060405234801561001057600080fd5b50600436106100365760003560e01c80632a50c1461461003b57806379b1833414610064575b600080fd5b61004e6100493660046104d2565b610084565b60405161005b9190610720565b60405180910390f35b6100776100723660046104d2565b610286565b60405161005b919061066e565b61008c61045a565b60405180608001604052808373ffffffffff... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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523 | 0xB414a17dd9DAb4F6E9fC7BBc90b4Fb93A1627c6A | pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c806329f7fc9e1461004657806389cb014014610064578063a9e925fd14610084575b600080fd5b61004e6100a5565b60405161005b9190610651565b60405180910390f35b6100776100723660046104ba565b6100bd565b60405161005b9190610700565b610097610092366004610544565b610242565b60405161005b92... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitra... | [
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524 | 0xB4bC70CF6B831F7963711FC762e87464222178A6 | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106100745760003560e01c8063b91351e11161004e578063b91351e11461013c578063cae270b61461017f578063ce9bde1d146101b5578063d3661fa5146101ca5761007b565b8063153e66e61461008057806329f7fc9e146100c85780632f73fc1a146100f95761007b565b3661007b57005b600080fd5b6100b66004803603606081101561009657600080fd5b506001600160a01b... | {"success": true, "error": null, "results": {"detectors": [{"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confidence": "Medium"}, {"check": "unchecked-lowlevel", "impact": "Medium", ... | true | null | {'detectors': [{'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowlevel', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrec... | [
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525 | 0xb4c805797afd2b70c841dee85002f3a7039208e9 | pragma solidity 0.7.0;
interface IOwnershipTransferrable {
function transferOwnership(address owner) external;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
}
abstract contract Ownable is IOwnershipTransferrable {
address private _owner;
constructor(address ... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c8063365a5306146100465780638da5cb5b14610065578063f2fde38b14610089575b600080fd5b6100636004803603602081101561005c57600080fd5b50356100af565b005b61006d6103f3565b604080516001600160a01b039092168252519081900360200190f35b6100636004803603602081101561009f57600080fd... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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526 | 0xb597f5eb77e18ba2b4a0c1badee55fe2b6deb5a7 | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
struct ProtocolBalance {
ProtocolMetadata metadata;
AdapterBalance[] adapterBalances;
}
struct ProtocolMetadata {
string name;
string description;
string websiteURL;
string iconURL;
uint256 version;
}
struct AdapterBalance ... | 0x608060405234801561001057600080fd5b50600436106100365760003560e01c80632a50c1461461003b57806379b1833414610064575b600080fd5b61004e610049366004610c6e565b610084565b60405161005b9190610ef7565b60405180910390f35b610077610072366004610c6e565b6101f1565b60405161005b9190610e37565b61008c610bf6565b60405180608001604052808373ffffffffff... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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527 | 0xb6b750ef0ab68cc029db015a25c3117fc9e7d59c | pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a... | 0x608060405234801561001057600080fd5b50600436106100a95760003560e01c806391d148541161007157806391d148541461013f578063a217fddf14610152578063b39e12cf1461015a578063c4d66de814610162578063ca15c87314610175578063d547741f14610188576100a9565b8063248a9ca3146100ae5780632f2ff15d146100d757806336568abe146100ec5780634890f9c0146100ff5780... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "write-after-write"... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'write-after-write', 'impact': 'Medium', 'confidence': 'High'},... | [
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528 | 0xb743339d669fcd84e4f4957804350492991a3b96 | pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a... | 0x608060405234801561001057600080fd5b506004361061010a5760003560e01c806391d14854116100a2578063c2a9925611610071578063c2a9925614610204578063c4d66de814610217578063ca15c8731461022a578063d547741f1461023d578063ee8c4bbf146102505761010a565b806391d14854146101c1578063a217fddf146101e1578063b39e12cf146101e9578063be07f57c146101f15761... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "write-after-write"... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'write-after-write', 'impact': 'Medium', 'confidence': 'High'},... | [
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529 | 0xb8B63650A9f91772668d5e82ea9Bf63a3299c627 | pragma solidity 0.5.16;
contract CarefulMath {
/**
* @dev Possible error codes that we can return
*/
enum MathError {
NO_ERROR,
DIVISION_BY_ZERO,
INTEGER_OVERFLOW,
INTEGER_UNDERFLOW
}
/**
* @dev Multiplies two numbers, returns an error on ove... | 0x6080604052600436106100865760003560e01c8063c1e8033411610059578063c1e80334146101a9578063d29d44ee146101be578063e992a041146101f1578063e9c714f214610224578063f851a4401461023957610086565b8063267822471461010957806353d5216b1461013a578063b28b1d271461014f578063b71d1a0c14610164575b6002546040516000916001600160a01b0316908290369080... | {"success": true, "error": null, "results": {"detectors": [{"check": "controlled-delegatecall", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'controlled-delegatecall', 'impact': 'High', 'confidence': 'Medium'}]} | [
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530 | 0xB994a94CCe737A1E9750A6772b3E0661Ed6CA72f | pragma solidity 0.5.17;
interface IErc20Token {
function transfer(address recipient, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}
contract NamedContract {
/// @notice The name of contract, which can be set ... | 0x6080604052600436106101d85760003560e01c80636f97e8a911610102578063c630d16e11610095578063f01c11a911610064578063f01c11a914610959578063f2ad7908146109c8578063f3af1b2314610a37578063f4c66e6114610a62576101d8565b8063c630d16e14610869578063c74cab49146108dc578063ca2b6dae14610917578063da37bad314610942576101d8565b8063a9778eba116100... | {"success": true, "error": null, "results": {"detectors": [{"check": "locked-ether", "impact": "Medium", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'locked-ether', 'impact': 'Medium', 'confidence': 'High'}]} | [
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531 | 0xb9cfc55a243CE278d318Bd3D311416B77972951a | pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
contract CoreUniLotterySettings
{
// Percentage calculations.
// As Solidity doesn't have floats, we have to use integers for
// percentage arithmetics.
// We set 1 percent to be equal to 1,000,000 - thus, we
// simulate 6 decimal poi... | 0x608060405234801561001057600080fd5b50600436106100365760003560e01c80636dddf4031461003b5780638129fc1c14610059575b600080fd5b610043610063565b604051610050919061013d565b60405180910390f35b6100616100e1565b005b6000805473ffffffffffffffffffffffffffffffffffffffff16331461008857600080fd5b7f000000000000000000000000d6498775fc8b6e2439... | {"success": true, "error": null, "results": {"detectors": [{"check": "write-after-write", "impact": "Medium", "confidence": "High"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "controlled-delegate... | true | null | {'detectors': [{'check': 'write-after-write', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'controlled-delegatecall', 'impact': 'High', 'confidence': 'Medi... | [
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532 | 0xba31aef54734a89d7b89aba2e0c7bf2564f6657f | pragma solidity 0.5.12;
contract BColor {
function getColor()
external view
returns (bytes32);
}
contract BBronze is BColor {
function getColor()
external view
returns (bytes32) {
return bytes32("BRONZE");
}
}
contract BConst is BBronze {
uin... | 0x608060405234801561001057600080fd5b50600436106103925760003560e01c806392eefe9b116101e0578063bc063e1a11610110578063d73dd623116100a8578063d73dd62314610c1a578063dd62ed3e14610c46578063e4a28a52146104f2578063e4e1e53814610c74578063ec09302114610ca6578063f1b8a9b714610cae578063f8b2cb4f14610cd4578063f8d6aed414610cfa578063fde924f7... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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533 | 0xbaa063fd1b0b631e13f9ff2b5aff872fe140087c | pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a... | 0x608060405234801561001057600080fd5b506004361061014d5760003560e01c806391d14854116100c3578063c20e9c211161007c578063c20e9c21146102f0578063c4d66de8146102f8578063ca15c8731461031e578063d081f2b81461033b578063d547741f14610343578063e68d5f631461036f5761014d565b806391d148541461029c5780639da69ccf146102c85780639df57f7f146102d05780... | {"success": true, "error": null, "results": {"detectors": [{"check": "write-after-write", "impact": "Medium", "confidence": "High"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "reentrancy-no-eth", ... | true | null | {'detectors': [{'check': 'write-after-write', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}]... | [
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534 | 0xbaae36cef9ad432a40debafa26d7a479cbbd0642 | pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
contract IAbacusOracle{
uint public callFee;
function getJobResponse(uint64 _jobId) public view returns(uint64[] memory _values){ }
function scheduleFunc(address to ,uint callTime, bytes memory data , uint fee , uint gaslimit ,uint gasprice... | 0x6080604052600436106102765760003560e01c806359f833701161014f578063a6f9dae1116100c1578063db775ec31161007a578063db775ec31461073e578063dbe3a3811461075e578063e333024e14610773578063f01fba9314610793578063f3f37d6e146107b3578063ff8eefea146107c85761027d565b8063a6f9dae114610689578063af92a693146106a9578063b0251e6d146106c9578063cd... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "imp... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'che... | [
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535 | 0xbb1416998df32605ebce0348a6c87aa9131be9a9 | pragma solidity 0.4.26;
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }
contract TokenERC20 {
string public name;
string public symbol;
uint8 public decimals = 18;
uint256 public totalSupply;
// ��mapping����ÿ����ַ��Ӧ����... | 0x6080604052600436106100ba576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100bf578063095ea7b31461014f57806318160ddd146101b457806323b872dd146101df578063313ce5671461026457806342966c681461029557806370a08231146102da57806379cc67901461033157806395d89b4114610396578063a9059cbb... | {"success": true, "error": null, "results": {"detectors": [{"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "name-reused", "impact": "High", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}]} | [
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536 | 0xBb306DC9000666767F9eF68045f3EE6c50DdD60F | pragma solidity 0.5.15;
contract MemoryMap {
/*
We store the state of the verifer in a contiguous chunk of memory.
The offsets of the different fields are listed below.
E.g. The offset of the i'th hash is [mm_hashes + i].
*/
uint256 constant internal CHANNEL_STATE_SIZE = 3;
uin... | 0x608060405234801561001057600080fd5b506060602060016000350102604051915080820160405280600083375060408051611e008082526203c0208201909252606091602082016203c0008038833901905050905061005f82826115ef565b60007e4000000000000110000000000001210000000000000000000000000000000090507f0800000000000011000000000000000000000000000000000000... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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537 | 0xbb963750b4e02e044e9b91a68ef1fb0d35787654 | pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
library Address {
function isContract(
address account
) internal view returns (bool) {
uint256 size;
assembly { size := extcodesize(account) }
return size > 0;
}
function sendValue(
address payable recipient,
... | 0x608060405234801561001057600080fd5b506004361061030c5760003560e01c806379cc67901161019d578063a694fc3a116100e9578063d547741f116100a2578063e4fbb6091161007c578063e4fbb6091461091b578063ed7c1b2014610939578063f5b944eb14610955578063fefaef3f146109735761030c565b8063d547741f146108b3578063dd62ed3e146108cf578063e487948d146108ff5761... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}]} | [
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538 | 0xbbd3c0c794f40c4f993b03f65343acc6fcfcb2e2 | pragma solidity 0.7.0;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among ot... | 0x6080604052600436106100c65760003560e01c80638f32d59b1161007f578063d4b8399211610059578063d4b839921461031e578063e38a303b14610333578063e8dccd061461035e578063f2fde38b1461039157610145565b80638f32d59b146102ad5780639afd9d78146102d6578063b9626d21146102eb57610145565b80630900f010146101e15780634555d5c9146102165780634b2cd118146102... | {"success": true, "error": null, "results": {"detectors": [{"check": "controlled-delegatecall", "impact": "High", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'controlled-delegatecall', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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539 | 0xbbdE1047EE332A3798AD9028714217622daC776f | pragma solidity 0.6.12;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - ... | 0x6080604052600436106102975760003560e01c8063715018a61161015a578063ad7a672f116100c1578063ea8499f21161007a578063ea8499f2146109d8578063ebd0905414610a02578063f011a7af14610a17578063f02a7d1914610a2c578063f2fde38b14610a5f578063fbcd9b0514610a925761029e565b8063ad7a672f1461090a578063b6b55f251461091f578063c57981b514610949578063d0... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "tautology", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": ... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'tautology', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': '... | [
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540 | 0xbbee20bce00001f36291f2655e94eb71ace992a8 | pragma solidity 0.4.19;
interface ERC20 {
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, ... | 0x6060604052600436106100af576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100b4578063095ea7b31461014257806318160ddd1461019c57806323b872dd146101c5578063313ce5671461023e578063661884631461026d57806370a08231146102c757806395d89b4114610314578063a9059cbb146103a2578063d73dd623... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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541 | 0xBC7166DEE7B0D157fa949d4b7c0Cc75982F3aE14 | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
struct TypedToken {
string tokenType;
address token;
}
interface AdapterRegistry {
function isValidTokenAdapter(
string calldata tokenAdapterName
)
external
returns (bool);
}
library EnumerableSet {
// ... | 0x608060405234801561001057600080fd5b506004361061011b5760003560e01c80637488ff76116100b2578063c8dbbf7211610081578063f2fde38b11610066578063f2fde38b1461023d578063f3697ccd14610250578063fe7c9c92146102635761011b565b8063c8dbbf7214610217578063e495eecb1461022a5761011b565b80637488ff76146101d2578063787b6725146101e75780638da5cb5b14... | {"success": true, "error": null, "results": {"detectors": [{"check": "unused-return", "impact": "Medium", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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542 | 0xbc9fe01e36c49c2ba039d0dd9399b5f21868e707 | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
struct ProtocolBalance {
ProtocolMetadata metadata;
AdapterBalance[] adapterBalances;
}
struct ProtocolMetadata {
string name;
string description;
string websiteURL;
string iconURL;
uint256 version;
}
struct AdapterBalance ... | 0x608060405234801561001057600080fd5b50600436106100365760003560e01c80632a50c1461461003b57806379b1833414610064575b600080fd5b61004e6100493660046106a4565b610084565b60405161005b919061092d565b60405180910390f35b6100776100723660046106a4565b6101ef565b60405161005b919061086d565b61008c61062c565b60405180608001604052808373ffffffffff... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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543 | 0xbcc1c418cea8f6b56612e3430d7770f814fb6e66 | pragma solidity 0.6.10;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among o... | 0x608060405234801561001057600080fd5b506004361061030c5760003560e01c80639379c8071161019d578063c83ee0b3116100e9578063d9dd800d116100a2578063e54a0a231161007c578063e54a0a23146106c5578063e88dc5b7146106cd578063ed089aa7146106d5578063ff3d2fb8146106dd5761030c565b8063d9dd800d14610698578063da72d128146106a0578063e0c6190d146106bd5761... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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544 | 0xbce9f63920f34c32872048810c216a18ac53d40d | pragma solidity 0.7.1;
interface IUnifiedStableFarming {
function percentage() external view returns(uint256[] memory);
//Earn pumping uSD - Means swap a chosen stableCoin for uSD, then burn the difference of uSD to obtain a greater uSD value in Uniswap Pool tokens
function earnByPump(
addr... | 0x6080604052600436106100345760003560e01c806314100127146100395780636b214d8f14610199578063c78ad77f146101e7575b600080fd5b34801561004557600080fd5b50610197600480360361010081101561005d57600080fd5b6001600160a01b038235169160208101359160408201359160608101359160808201359160a08101359181019060e0810160c0820135600160201b8111156100a4... | {"success": true, "error": null, "results": {"detectors": [{"check": "unchecked-transfer", "impact": "High", "confidence": "Medium"}, {"check": "unused-return", "impact": "Medium", "confidence": "Medium"}, {"check": "arbitrary-send", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}]} | [
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545 | 0xbd0d47d7ecf0978f13878615635f3d3dc5fecde1 | pragma solidity 0.6.6;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - s... | 0x608060405234801561001057600080fd5b506004361061009e5760003560e01c806370a082311161006657806370a082311461025457806395d89b41146102ac5780639dc29fac1461032f578063a9059cbb1461037d578063dd62ed3e146103e35761009e565b806306fdde03146100a3578063095ea7b31461012657806318160ddd1461018c57806323b872dd146101aa578063313ce56714610230575b... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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546 | 0xbdbc4fec8273709a4b8132c2324076ca5e583cbe | pragma solidity 0.5.7;
library Roles {
struct Role {
mapping (address => bool) bearer;
}
function add(Role storage role, address account) internal {
require(account != address(0));
require(!has(role, account));
role.bearer[account] = true;
}
... | 0x608060405234801561001057600080fd5b50600436106100a95760003560e01c80633950935111610071578063395093511461025f57806370a08231146102c557806395d89b411461031d578063a457c2d7146103a0578063a9059cbb14610406578063dd62ed3e1461046c576100a9565b806306fdde03146100ae578063095ea7b31461013157806318160ddd1461019757806323b872dd146101b55780... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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547 | 0xbde8e028cb66b04642770fe48500d0c152d11875 | pragma solidity 0.6.0;
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view retur... | 0x608060405234801561001057600080fd5b506004361061010b5760003560e01c806370a08231116100a257806395d89b411161007157806395d89b4114610330578063a457c2d714610338578063a9059cbb14610364578063dd62ed3e14610390578063f2fde38b146103be5761010b565b806370a08231146102b2578063715018a6146102d857806379cc6790146102e05780638da5cb5b1461030c5761... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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548 | 0xbe989dbcf88552715f1d658104f231262a8e8cd0 | pragma solidity 0.7.1;
abstract contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () { }
function _msgSender() internal view virtual returns (address payable) {
... | 0x6080604052600436106100955760003560e01c80638bd89075116100595780638bd89075146101745780638da5cb5b146101c5578063f27ce4ac14610206578063f2fde38b14610277578063ff247dc7146102c8576100a5565b806359af95eb146100aa578063715018a6146100ca57806372bf079e146100e157806387e0fcb91461011c5780638b56b77a14610133576100a5565b366100a5576100a261... | {"success": true, "error": null, "results": {"detectors": [{"check": "unchecked-transfer", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}]} | [
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549 | 0xbefac467ef43d5ab22287042ff75f314d21b342c | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
interface ERC20 {
function approve(address, uint256) external returns (bool);
function transfer(address, uint256) external returns (bool);
function transferFrom(address, address, uint256) external returns (bool);
function name() external view... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c806330fa738c14610046578063d4fac45d14610064578063f72c079114610084575b600080fd5b61004e61008c565b60405161005b919061186d565b60405180910390f35b610077610072366004611800565b6100c5565b60405161005b91906118de565b61004e6117a3565b604051806040016040528060058152602001... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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550 | 0xbFB00e7021BcCbeD3323Ef68DcD388b4D6a8204D | pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitra... | [
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551 | 0xBFb9977e5b93494f0025bdf3C436310c69eCCAA3 | pragma solidity 0.6.2;
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view retur... | 0x608060405234801561001057600080fd5b50600436106100a95760003560e01c80633950935111610071578063395093511461025f57806370a08231146102c557806395d89b411461031d578063a457c2d7146103a0578063a9059cbb14610406578063dd62ed3e1461046c576100a9565b806306fdde03146100ae578063095ea7b31461013157806318160ddd1461019757806323b872dd146101b55780... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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552 | 0xc014a4ecd15a2fa00f1caf89f13962a48cce1942 | pragma solidity 0.5.17;
pragma experimental ABIEncoderV2;
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks... | 0x608060405234801561001057600080fd5b50600436106100365760003560e01c8063bf448ef31461003b578063d09be34e14610055575b600080fd5b61004361008c565b60408051918252519081900360200190f35b610043600480360360a081101561006b57600080fd5b50803590602081013590604081013590606081013515159060800135610092565b60005481565b60006100c9856100bd600054... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "uninitialized-loca... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'uninitialized-local', 'impact': 'Medium', 'confidence': 'Mediu... | [
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553 | 0xc01a4900ad0b660432836d40ec0f6fd336895f38 | pragma solidity 0.6.12;
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view retu... | 0x6080604052600436106102305760003560e01c8063754178511161012e578063db02fc60116100ab578063eb87e89b1161006f578063eb87e89b14610984578063f1e5ff3e146109ae578063f851a440146109e1578063fed0a20e146109f6578063ffbb698914610a0b57610230565b8063db02fc60146108d1578063db374cbb14610904578063e4d01a641461093d578063e7f9cefd14610967578063eb... | {"success": true, "error": null, "results": {"detectors": [{"check": "reentrancy-eth", "impact": "High", "confidence": "Medium"}, {"check": "weak-prng", "impact": "High", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'reentrancy-eth', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'weak-prng', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}]} | [
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554 | 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2 | pragma solidity 0.4.19;
contract WETH9 {
string public name = "Wrapped Ether";
string public symbol = "WETH";
uint8 public decimals = 18;
event Approval(address indexed src, address indexed guy, uint wad);
event Transfer(address indexed src, address indexed dst, uint wad);
... | 0x6060604052600436106100af576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100b9578063095ea7b31461014757806318160ddd146101a157806323b872dd146101ca5780632e1a7d4d14610243578063313ce5671461026657806370a082311461029557806395d89b41146102e2578063a9059cbb14610370578063d0e30db0... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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555 | 0xc03fcc2d5c0361408cacf5577f67b8613b28e2f4 | pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a... | 0x608060405234801561001057600080fd5b50600436106101c45760003560e01c806391d14854116100f9578063c4d66de811610097578063ca718dc111610071578063ca718dc1146103d5578063d0e11f26146103e8578063d547741f146103fb578063dc8d734f1461040e576101c4565b8063c4d66de81461039c578063c978f668146103af578063ca15c873146103c2576101c4565b8063acad7a4b11... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "write-after-write"... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'write-after-write', 'impact': 'Medium', 'confidence': 'High'},... | [
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556 | 0xc09b80b7dfcc6b9cab6c2fad028da91425ceb9f4 | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106101a05760003560e01c806353485907116100ec578063a46a66c91161008a578063ce245c8011610064578063ce245c80146103f1578063d0cc728914610406578063d3661fa51461029a578063f1d021621461041b576101a7565b8063a46a66c91461035b578063bfe142a3146103c7578063c91d59fe146103dc576101a7565b80637b925ab1116100c65780637b925ab1146103... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confiden... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowleve... | [
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557 | 0xc2cc1269c131bfbd45fe65e6bb2de1a6f66ab6f3 | pragma solidity 0.4.21;
contract EIP20Interface {
/* This is a slight change to the ERC20 base standard.
function totalSupply() constant returns (uint256 supply);
is replaced with:
uint256 public totalSupply;
This automatically creates a getter function for the totalSupply.
This is ... | 0x6060604052600436106100af576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100b4578063095ea7b31461014257806318160ddd1461019c57806323b872dd146101c557806327e235e31461023e578063313ce5671461028b5780635c658165146102ba57806370a082311461032657806395d89b4114610373578063a9059cbb... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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558 | 0xc2fc97425b426a70c74a7b68c63595092e8c4118 | pragma solidity 0.4.24;
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address _who) public view returns (uint256);
function transfer(address _to, uint256 _value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
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559 | 0xc3162705Af0e10108FF837E450A14669b2711129 | pragma solidity 0.7.4;
interface IArbitrable {
/**
* @dev To be raised when a ruling is given.
* @param _arbitrator The arbitrator giving the ruling.
* @param _disputeID ID of the dispute in the Arbitrator contract.
* @param _ruling The ruling which was given.
*/
event Ruling(IA... | 0x60806040526004361061023b5760003560e01c806382b350171161012e578063b5f3918b116100ab578063cc7b9d061161006f578063cc7b9d0614610a77578063d2dbe1d814610aa2578063d661dd3114610acc578063e4c0aaf414610ae1578063fc6f8f1614610b145761023b565b8063b5f3918b14610984578063b8573185146109ae578063c17a340e146109cb578063c36cd196146109e0578063c4... | {"success": true, "error": null, "results": {"detectors": [{"check": "reentrancy-eth", "impact": "High", "confidence": "Medium"}, {"check": "unchecked-send", "impact": "Medium", "confidence": "Medium"}, {"check": "arbitrary-send", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'reentrancy-eth', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-send', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}]} | [
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560 | 0xc338753a517c6f12f15626bfd2bdd745f9a1ad78 | pragma solidity 0.6.6;
interface IERC20 {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external view returns (string memory);
function symbol() external view returns (string m... | 0x60806040526004361061014f5760003560e01c80638803dbee116100b6578063c45a01551161006f578063c45a015514610a10578063d06ca61f14610a25578063ded9382a14610ada578063e8e3370014610b4d578063f305d71914610bcd578063fb3bdb4114610c1357610188565b80638803dbee146107df578063ad5c464814610875578063ad615dec146108a6578063af2979eb146108dc578063b6... | {"success": true, "error": null, "results": {"detectors": [{"check": "uninitialized-local", "impact": "Medium", "confidence": "Medium"}, {"check": "unchecked-transfer", "impact": "High", "confidence": "Medium"}, {"check": "unused-return", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "... | true | null | {'detectors': [{'check': 'uninitialized-local', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}]} | [
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561 | 0xc3AB64924E552646a0Fa119DC4Ff1B2cD8Ab2D84 | pragma solidity 0.6.5;
interface LandToken {
function mintQuad(
address to,
uint256 size,
uint256 x,
uint256 y,
bytes calldata data
) external;
}
contract Admin {
address internal _admin;
/// @dev emitted when the contract administrator is changed.
... | 0x608060405234801561001057600080fd5b50600436106101515760003560e01c8063984d6252116100cd578063dc5074af11610081578063ecb255b511610066578063ecb255b514610857578063f23a6e6114610874578063f2e7b3811461090957610151565b8063dc5074af14610814578063e56f8a9e1461083a57610151565b8063bc197c81116100b2578063bc197c81146105d3578063c10a420814... | {"success": true, "error": null, "results": {"detectors": [{"check": "arbitrary-send", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}]} | [
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562 | 0xc3ec96b940d184238025b43150480d36e4d1c40e | pragma solidity 0.6.12;
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly { size := extcodesize(account) }
return size > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
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563 | 0xc49eaf505de79f0457c085a31576edc5dc9fbad3 | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
struct ProtocolBalance {
ProtocolMetadata metadata;
AdapterBalance[] adapterBalances;
}
struct ProtocolMetadata {
string name;
string description;
string websiteURL;
string iconURL;
uint256 version;
}
struct AdapterBalance ... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c806330fa738c14610046578063d4fac45d14610064578063f72c079114610084575b600080fd5b61004e61008c565b60405161005b919061023d565b60405180910390f35b6100776100723660046101d0565b6100c5565b60405161005b91906102ae565b61004e610173565b604051806040016040528060058152602001... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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564 | 0xc4ae575a46b04a0696d0e9437c78c923c2ad001a | pragma solidity 0.5.17;
interface IERC20 {
function totalSupply() external view returns (uint);
function balanceOf(address account) external view returns (uint);
function transfer(address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external vi... | 0x608060405234801561001057600080fd5b50600436106100625760003560e01c80630affded61461006757806312307e1414610085578063541bcb76146100cf5780635d1f7ef3146101195780637f815f2714610171578063d17c61dc1461018f575b600080fd5b61006f6101e7565b6040518082815260200191505060405180910390f35b61008d610291565b604051808273ffffffffffffffffffffff... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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565 | 0xc5142a066dfcabbd20ff8b581c5e82f523af21bc | pragma solidity 0.6.12;
abstract contract ERC20Interface {
function totalSupply() public virtual view returns (uint);
function balanceOf(address tokenOwner) public virtual view returns (uint256 balance);
function allowance(address tokenOwner, address spender) public virtual view returns (uint256 rema... | 0x6080604052600436106102465760003560e01c80638da5cb5b11610139578063c1672177116100b6578063e1bea1af1161007a578063e1bea1af14610829578063e486033914610862578063f2fde38b146108b0578063faea0532146108e3578063fe995a4e14610916578063fea167e01461094f57610246565b8063c167217714610752578063c74e9f771461077c578063cd926e13146107a6578063ce... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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566 | 0xC56BC07F40C145DC3cD05B938E63831C08ab7602 | pragma solidity 0.4.21;
contract EIP20Interface {
/* This is a slight change to the ERC20 base standard.
function totalSupply() constant returns (uint256 supply);
is replaced with:
uint256 public totalSupply;
This automatically creates a getter function for the totalSupply.
This is moved ... | 0x6060604052600436106100af576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100b4578063095ea7b31461014257806318160ddd1461019c57806323b872dd146101c557806327e235e31461023e578063313ce5671461028b5780635c658165146102ba57806370a082311461032657806395d89b4114610373578063a9059cbb... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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567 | 0xc5731b82fd66a511dd2a452a9cb3c90917fc3ad1 | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
interface ERC20 {
function approve(address, uint256) external returns (bool);
function transfer(address, uint256) external returns (bool);
function transferFrom(address, address, uint256) external returns (bool);
function name() external view... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c806330fa738c14610046578063d4fac45d14610064578063f72c079114610084575b600080fd5b61004e61008c565b60405161005b9190610ed1565b60405180910390f35b610077610072366004610e64565b6100c5565b60405161005b9190610f42565b61004e610e07565b604051806040016040528060058152602001... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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568 | 0xc588ab49e9b70ec9e0177e9039e38a0dfff16f7c | pragma solidity 0.6.12;
contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifi... | 0x608060405234801561001057600080fd5b50600436106103db5760003560e01c806376d8b1171161020a578063c0c53b8b11610125578063e1522536116100b8578063f301af4211610087578063f301af4214610ac0578063f77c479114610add578063f8453e7c14610ae5578063fd96044b14610bb0578063fec8ee0c14610bd6576103db565b8063e152253614610a63578063e6f1daf214610a915780... | {"success": true, "error": null, "results": {"detectors": [{"check": "unused-return", "impact": "Medium", "confidence": "Medium"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "reentrancy-no-eth", "i... | true | null | {'detectors': [{'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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569 | 0xc67a3b1587b2421728750294f0a049e98eb0da65 | pragma solidity 0.6.0;
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
function _msgSender() inter... | 0x608060405234801561001057600080fd5b506004361061012c5760003560e01c80636ebcf607116100ad57806398fd3f581161007157806398fd3f58146105ef578063a457c2d71461063d578063a9059cbb146106a3578063d2bd03b214610709578063dd62ed3e146107275761012c565b80636ebcf607146104545780636f309291146104ac57806370a08231146104f6578063931ad5091461054e5780... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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570 | 0xc6bd5ae5f9ff04f2f07b9b839950f3546cdfa59f | pragma solidity 0.5.3;
library OpenZeppelinUpgradesAddress {
/**
* Returns whether the target address is a contract
* @dev This function will return false if invoked during the constructor of a contract,
* as the code is not actually created until after the constructor finishes.
* @param a... | 0x6080604052600436106100705760003560e01c80638f2839701161004e5780638f283970146101bb578063cf7a1d771461020c578063d1f5789414610307578063f851a440146103e257610070565b80633659cfe61461007a5780634f1ef286146100cb5780635c60da1b14610164575b610078610439565b005b34801561008657600080fd5b506100c96004803603602081101561009d57600080fd5b81... | {"success": true, "error": null, "results": {"detectors": [{"check": "controlled-delegatecall", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'controlled-delegatecall', 'impact': 'High', 'confidence': 'Medium'}]} | [
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571 | 0xc72624Ac68c2928edcD109a6be994155ecd87320 | pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(a... | 0x6080604052600436106100295760003560e01c8063a60573701461002e578063c24126761461005e575b600080fd5b6100486004803603810190610043919061060e565b610089565b6040516100559190610789565b60405180910390f35b34801561006a57600080fd5b506100736103dc565b60405161008091906107a4565b60405180910390f35b60008251845114801561009d575081518351145b61... | {"success": true, "error": null, "results": {"detectors": [{"check": "uninitialized-state", "impact": "High", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'uninitialized-state', 'impact': 'High', 'confidence': 'High'}]} | [
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572 | 0xc7eb100c1f923c933e5121a8c3ce04e3c515a239 | pragma solidity 0.4.21;
contract EIP20Interface {
/* This is a slight change to the ERC20 base standard.
function totalSupply() constant returns (uint256 supply);
is replaced with:
uint256 public totalSupply;
This automatically creates a getter function for the totalSupply.
This is ... | 0x6060604052600436106100af576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100b4578063095ea7b31461014257806318160ddd1461019c57806323b872dd146101c557806327e235e31461023e578063313ce5671461028b5780635c658165146102ba57806370a082311461032657806395d89b4114610373578063a9059cbb... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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573 | 0xc7eec2c723b6fad28290e0755ca4e3d75c0d6958 | pragma solidity 0.5.17;
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure... | 0x6080604052600436106100c25760003560e01c80636a42b8f81161007f578063c1a287e211610059578063c1a287e2146105dd578063e177246e146105f2578063f2b065371461061c578063f851a4401461065a576100c2565b80636a42b8f81461059e5780637d645fab146105b3578063b1b43ae5146105c8576100c2565b80630825f38f146100c45780630e18b6811461027957806326782247146102... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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574 | 0xc8218f0599b648e8c1436802fe30f0cbab4d97e2 | pragma solidity 0.6.12;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among o... | 0x608060405234801561001057600080fd5b50600436106100f55760003560e01c806370a0823111610097578063a457c2d711610066578063a457c2d7146102e7578063a6f9dae114610313578063a9059cbb14610339578063dd62ed3e14610365576100f5565b806370a082311461027057806379cc67901461029657806395d89b41146102c2578063a0712d68146102ca576100f5565b806323b872dd11... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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575 | 0xc83f1d1174070ec51687498eed9e8ab9b5495144 | pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
interface ERC20 {
function approve(address, uint256) external returns (bool);
function transfer(address, uint256) external returns (bool);
function transferFrom(address, address, uint256) external returns (bool);
function name() external view... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c806330fa738c14610046578063d4fac45d14610064578063f72c079114610084575b600080fd5b61004e61008c565b60405161005b9190610684565b60405180910390f35b610077610072366004610617565b6100c5565b60405161005b91906106f5565b61004e6105ba565b604051806040016040528060058152602001... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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576 | 0xc8538d7355c36a1dd0a8f3f66a11b02eb0c68fb5 | pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
contract IAbacusOracle{
uint public callFee;
function getJobResponse(uint64 _jobId) public view returns(uint64[] memory _values){ }
function scheduleFunc(address to ,uint callTime, bytes memory data , uint fee , uint gaslimit ,uint gasprice... | 0x608060405234801561001057600080fd5b50600436106101585760003560e01c8063a58c2a33116100c3578063c78cd5261161007c578063c78cd52614610327578063d542050b1461033a578063e0059b311461034d578063e364db9214610360578063ec020d4514610373578063f1d80b891461038657610158565b8063a58c2a3314610280578063a87430ba146102a9578063b43c12ce146102ca5780... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "imp... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'che... | [
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577 | 0xc87aad6dccd9b543b7131c93560df48d0ea86e8a | pragma solidity 0.4.24;
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
function _msgSender() inte... | 0x608060405260043610610112576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde0314610117578063087fad41146101a7578063095ea7b31461022457806318160ddd14610289578063231224ef146102b457806323b872dd146102df57806325c8a8bc14610364578063313ce567146103e157806339509351146104125780633cd8e5a5... | {"success": true, "error": null, "results": {"detectors": [{"check": "tautology", "impact": "Medium", "confidence": "High"}, {"check": "controlled-array-length", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'tautology', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'controlled-array-length', 'impact': 'High', 'confidence': 'Medium'}]} | [
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578 | 0xc883c1774bc4e699dfd3abd122fdb751702b7146 | pragma solidity 0.6.8;
pragma experimental ABIEncoderV2;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a ... | 0x608060405234801561001057600080fd5b50600436106100835760003560e01c8063403f3731146100885780636034c5941461009d578063704b6c02146100b057806379fbe988146100c3578063856bf4fb146100cb5780639a202d47146100de578063a2bb645b146100e6578063b48a25de146100f9578063e72b81d31461010c575b600080fd5b61009b610096366004610d46565b610114565b005b61... | {"success": true, "error": null, "results": {"detectors": [{"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}]} | [
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579 | 0xc8e4EE91E7C14D625B829D2C2E87cF7348Eca449 | pragma solidity 0.5.15;
contract IFactRegistry {
/*
Returns true if the given fact was previously registered in the contract.
*/
function isValid(bytes32 fact)
external view
returns(bool);
}
contract IQueryableFactRegistry is IFactRegistry {
/*
Returns true if at... | 0x608060405234801561001057600080fd5b506004361061004c5760003560e01c8063405a6362146100515780635578ceae146100eb5780636a938567146101a0578063d6354e15146101d1575b600080fd5b6100cd6004803603608081101561006757600080fd5b81019060208101813564010000000081111561008257600080fd5b82018360208201111561009457600080fd5b80359060200191846020... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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580 | 0xC93d7034FBBE4cdbb0B90C4de9703a767A00197d | pragma solidity 0.5.15;
contract IFactRegistry {
/*
Returns true if the given fact was previously registered in the contract.
*/
function isValid(bytes32 fact)
external view
returns(bool);
}
contract IQueryableFactRegistry is IFactRegistry {
/*
Returns true if at... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c80636a93856714610046578063d6354e1514610077578063eeb728661461007f575b600080fd5b6100636004803603602081101561005c57600080fd5b50356100fc565b604080519115158252519081900360200190f35b6100636101a2565b610087610222565b6040805160208082528351818301528351919283929083... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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581 | 0xC9567Fa163F642baC8Fc01252ED425A3D45a78E5 | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106101a05760003560e01c806353485907116100ec578063a46a66c91161008a578063ce245c8011610064578063ce245c80146103f1578063d0cc728914610406578063d3661fa51461029a578063f1d021621461041b576101a7565b8063a46a66c91461035b578063bfe142a3146103c7578063c91d59fe146103dc576101a7565b80637b925ab1116100c65780637b925ab1146103... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confiden... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowleve... | [
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582 | 0xc9f8dc8482d3c29aa26815abc65f146fcfce1680 | pragma solidity 0.6.12;
contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifi... | 0x608060405234801561001057600080fd5b50600436106103995760003560e01c806376d8b117116101e9578063bf88a6ff1161010f578063dfe05031116100ad578063efbe1c1c1161007c578063efbe1c1c146109d6578063f77c4791146109de578063fd96044b146109e6578063fec8ee0c14610a0c57610399565b8063dfe0503114610979578063e152253614610981578063e6f1daf2146109af5780... | {"success": true, "error": null, "results": {"detectors": [{"check": "unused-return", "impact": "Medium", "confidence": "Medium"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "reentrancy-no-eth", "i... | true | null | {'detectors': [{'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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583 | 0xcAA46E3a5D2c3c07A0C4F7723c7977c3e643C2B1 | pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warn... | 0x6080604052600436106100c25760003560e01c80637835d2961161007f578063c345315311610059578063c345315314610211578063d48a9d431461023e578063f48f8ac71461025e578063f9bce3111461027e576100c2565b80637835d296146101a45780637aeb642a146101c4578063c23a5cea146101f1576100c2565b806309a08af4146100c757806316934fc4146100e957806347116c6e146101... | {"success": true, "error": null, "results": {"detectors": [{"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "arbitrary-send", "impact": "High", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "uninitialized-local", "impac... | true | null | {'detectors': [{'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'uninitialized-local', 'impact': 'Medium', 'confidence': 'Medium'}, {'che... | [
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584 | 0xCab7ce9148499E0dD8228c3c8cDb9B56Ac2bb57a | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106101bb5760003560e01c80635c1e4172116100ec578063a46a66c91161008a578063ce245c8011610064578063ce245c801461042c578063d0cc728914610441578063d3661fa5146102b5578063f1d0216214610456576101c2565b8063a46a66c914610396578063bfe142a314610402578063c91d59fe14610417576101c2565b80637b925ab1116100c65780637b925ab1146103... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confiden... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowleve... | [
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585 | 0xcb127f47b716d4c257f5d5cc79a478215c608f0a | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106101a05760003560e01c806353485907116100ec578063a46a66c91161008a578063ce245c8011610064578063ce245c80146103f1578063d0cc728914610406578063d3661fa51461029a578063f1d021621461041b576101a7565b8063a46a66c91461035b578063bfe142a3146103c7578063c91d59fe146103dc576101a7565b80637b925ab1116100c65780637b925ab1146103... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confiden... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowleve... | [
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586 | 0xcb6c1bb3585b3a358eb74357e0d077efe89ede1d | pragma solidity 0.4.21;
contract EIP20Interface {
/* This is a slight change to the ERC20 base standard.
function totalSupply() constant returns (uint256 supply);
is replaced with:
uint256 public totalSupply;
This automatically creates a getter function for the totalSupply.
This is moved ... | 0x6060604052600436106100af576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100b4578063095ea7b31461014257806318160ddd1461019c57806323b872dd146101c557806327e235e31461023e578063313ce5671461028b5780635c658165146102ba57806370a082311461032657806395d89b4114610373578063a9059cbb... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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587 | 0xcbf8412e939b7712251eb5ec07220573283a4e90 | pragma solidity 0.6.12;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among o... | 0x608060405234801561001057600080fd5b50600436106100885760003560e01c80638da5cb5b1161005b5780638da5cb5b1461011d5780638fd3ab8014610151578063e0705b8b1461015b578063f2fde38b1461017957610088565b8063186f03541461008d578063715018a6146100c157806378e97925146100cb5780637d499aa4146100e9575b600080fd5b6100956101bd565b604051808273ffffff... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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588 | 0xcc73944e04edaa27cef95f87a9ebbd022fedb1b9 | pragma solidity 0.6.8;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender)... | 0x60806040523480156200001157600080fd5b50600436106200005e5760003560e01c80632c9f55ed14620000635780633914a04f146200008e578063933a9ce81462000098578063a7d5a1ee14620000be578063a9771afd1462000311575b600080fd5b6200008c600480360360208110156200007b57600080fd5b50356001600160a01b03166200034e565b005b6200008c620006f8565b620000a26200... | {"success": true, "error": null, "results": {"detectors": [{"check": "unchecked-transfer", "impact": "High", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}]} | [
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589 | 0xcc8e7e56d448b765ffa0ce6a72075af75057f431 | pragma solidity 0.6.12;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among o... | 0x608060405234801561001057600080fd5b506004361061004c5760003560e01c806338af3eed1461005157806386d1a69f14610075578063b91d40011461007f578063fc0c546a14610099575b600080fd5b6100596100a1565b604080516001600160a01b039092168252519081900360200190f35b61007d6100b0565b005b6100876101c7565b60408051918252519081900360200190f35b6100596101... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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590 | 0xCE4c11c339be0CddAf07eacF18d7e6884800F43E | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confiden... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowleve... | [
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591 | 0xce593a29905951e8fc579bc092eca72577da575c | pragma solidity 0.6.7;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among ot... | 0x608060405234801561001057600080fd5b50600436106100a95760003560e01c80633950935111610071578063395093511461025f57806370a08231146102c557806395d89b411461031d578063a457c2d7146103a0578063a9059cbb14610406578063dd62ed3e1461046c576100a9565b806306fdde03146100ae578063095ea7b31461013157806318160ddd1461019757806323b872dd146101b55780... | {"success": true, "error": null, "results": {}} | true | null | {} | [
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592 | 0xce7467531f0Fa949e6cd09A3B8F39e287eec33b8 | pragma solidity 0.6.5;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - s... | 0x608060405234801561001057600080fd5b50600436106101975760003560e01c80637b0a47ee116100e3578063cd3daf9d1161008c578063ebe2b12b11610066578063ebe2b12b14610349578063edc9af9514610351578063f2fde38b1461035957610197565b8063cd3daf9d14610331578063df136d6514610339578063e9fad8ee1461034157610197565b80638da5cb5b116100bd5780638da5cb5b14... | {"success": true, "error": null, "results": {"detectors": [{"check": "reentrancy-eth", "impact": "High", "confidence": "Medium"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'reentrancy-eth', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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593 | 0xCf199786d4594F6537694E1b006c26E564665571 | pragma solidity 0.5.17;
pragma experimental ABIEncoderV2;
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks... | 0x608060405234801561001057600080fd5b50600436106100f55760003560e01c80639ec5a89411610097578063e5c8b03d11610066578063e5c8b03d1461037a578063eb12d61e14610382578063ee599f36146103a8578063f7c618c1146103dd576100f5565b80639ec5a894146102c9578063b31a4bfa146102d1578063d193769414610310578063d7180cc814610345576100f5565b8063572913b811... | {"success": true, "error": null, "results": {"detectors": [{"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "reentrancy-no-eth", "impact": "Medium", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}, {"check": "uninitialized-loca... | true | null | {'detectors': [{'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'reentrancy-no-eth', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'uninitialized-local', 'impact': 'Medium', 'confidence': 'Mediu... | [
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594 | 0xCFbFaC74C26F8647cBDb8c5caf80BB5b32E43134 | pragma solidity 0.7.4;
interface GnosisSafe {
/// @dev Allows a Module to execute a Safe transaction without any further confirmations.
/// @param to Destination address of module transaction.
/// @param value Ether value of module transaction.
/// @param data Data payload of module transaction.
... | 0x608060405234801561001057600080fd5b50600436106101215760003560e01c8063b713c9d4116100ad578063dd43a79f11610071578063dd43a79f1461093c578063e71bdf411461098c578063eb37abe0146109d0578063f56e81fa14610a97578063ffa1ad7414610b2f57610121565b8063b713c9d4146105cc578063beaeb388146106aa578063c19bf50e14610744578063ce60c692146107a85780... | {"success": true, "error": null, "results": {"detectors": [{"check": "weak-prng", "impact": "High", "confidence": "Medium"}, {"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}]}} | true | null | {'detectors': [{'check': 'weak-prng', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'incorrect-equality', 'impact': 'Medium', 'confidence': 'High'}]} | [
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595 | 0xd03a329e6a1f05d0c797215a82e8f0e14f241d4b | pragma solidity 0.6.12;
enum escrowstatus {CANCELLED, ACTIVATED, SETTLED}
interface DaiErc20 {
function transfer(address, uint) external returns (bool);
function transferFrom(address,address,uint256) external returns (bool);
function approve(address,uint256) external returns (bool);
function balan... | 0x608060405234801561001057600080fd5b50600436106100cf5760003560e01c8063867b568b1161008c578063bb7291f311610066578063bb7291f31461026f578063d0ebdbe7146102a9578063eb31d6fe146102cf578063ee5e3b81146102e9576100cf565b8063867b568b146101ad57806387534f8d146101c95780638e63c7f9146101ec576100cf565b806314081e39146100d4578063372e0e9c14... | {"success": true, "error": null, "results": {"detectors": [{"check": "unchecked-transfer", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}]} | [
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596 | 0xd042D4E9B4186c545648c7FfFe87125c976D110B | pragma solidity 0.6.6;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106100c25760003560e01c80637753f47b1161007f578063934785b711610059578063934785b7146102aa578063bfe142a3146102f5578063c1bce0b71461030a578063c91d59fe14610349576100c2565b80637753f47b1461020857806383c2120c146102395780638905d1781461026c576100c2565b806305a363de146100c757806313120a4e146100f357806347e7ef24146101... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium", "confidence": "High"}, {"check": "arbitrary-send", "impact": "High", "confiden... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitrary-send', 'impact': 'High', 'confidence': 'Medium'}, {'check': 'unchecked-lowleve... | [
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597 | 0xd05bba08a7a2209896cd5df11ffa0211bb03d418 | pragma solidity 0.7.4;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
*... | 0x608060405234801561001057600080fd5b50600436106100415760003560e01c806364fb6f5e146100465780639ed933181461008e578063a3def923146100b4575b600080fd5b6100726004803603604081101561005c57600080fd5b506001600160a01b0381351690602001356100e0565b604080516001600160a01b039092168252519081900360200190f35b610072600480360360208110156100a4... | {"success": true, "error": null, "results": {"detectors": [{"check": "unused-return", "impact": "Medium", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unused-return', 'impact': 'Medium', 'confidence': 'Medium'}]} | [
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598 | 0xd06e1333b979c85e220abb557a67295c00de4942 | pragma solidity 0.4.18;
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
... | 0x60606040526004361061013e576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806305d2035b1461014357806306fdde0314610170578063095ea7b3146101fe57806318160ddd1461025857806323b872dd146102815780632ff2e9dc146102fa578063313ce567146103235780633f4ba83a1461035257806340c10f19146103675780634e71e0c8... | {"success": true, "error": null, "results": {"detectors": [{"check": "unchecked-transfer", "impact": "High", "confidence": "Medium"}]}} | true | null | {'detectors': [{'check': 'unchecked-transfer', 'impact': 'High', 'confidence': 'Medium'}]} | [
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599 | 0xD0eB57ff3eA4Def2b74dc29681fd529D1611880f | pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
... | 0x6080604052600436106102815760003560e01c8063821b4cd31161014f578063c72c4d10116100c1578063e304c6081161007a578063e304c60814610638578063e31f584c14610668578063ed20210914610688578063ee872558146106a8578063f24ccbfe146106c8578063f851a440146106dd57610288565b8063c72c4d10146105d9578063cc694d48146105ee578063cf786f8f146103fa578063cf... | {"success": true, "error": null, "results": {"detectors": [{"check": "tx-origin", "impact": "Medium", "confidence": "Medium"}, {"check": "divide-before-multiply", "impact": "Medium", "confidence": "Medium"}, {"check": "name-reused", "impact": "High", "confidence": "High"}, {"check": "erc20-interface", "impact": "Medium... | true | null | {'detectors': [{'check': 'tx-origin', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'divide-before-multiply', 'impact': 'Medium', 'confidence': 'Medium'}, {'check': 'name-reused', 'impact': 'High', 'confidence': 'High'}, {'check': 'erc20-interface', 'impact': 'Medium', 'confidence': 'High'}, {'check': 'arbitra... | [
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