File size: 4,438 Bytes
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contract Owned {
address public owner;
address public signer;
constructor() public {
owner = msg.sender;
signer = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
modifier onlySigner {
require(msg.sender == signer);
_;
}
function transferOwnership(address newOwner) public onlyOwner {
owner = newOwner;
}
function transferSignership(address newSigner) public onlyOwner {
signer = newSigner;
}
}
contract ERC20Token {
string public name;
string public symbol;
uint8 public decimals = 18;
uint256 public totalSupply;
mapping (address => uint256) public balances;
mapping (address => mapping (address => uint256)) public allowed;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed sender, address indexed spender, uint256 value);
constructor(uint256 _supply, string _name, string _symbol)
public
{
totalSupply = _supply * 10**uint256(decimals);
balances[msg.sender] = totalSupply;
name=_name;
symbol=_symbol;
emit Transfer(0x0, msg.sender, totalSupply);
}
function totalSupply()
public
constant
returns (uint256)
{
return totalSupply;
}
function balanceOf(address _owner)
public
constant
returns (uint256 balance)
{
return balances[_owner];
}
function approve(address _spender, uint256 _value)
public
returns (bool success)
{
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender)
public
constant
returns (uint256 remaining)
{
return allowed[_owner][_spender];
}
function _transfer(address _from, address _to, uint256 _value)
internal
returns (bool success)
{
require((_to != address(0)) && (_to != address(this)) && (_to != _from));
require((_value > 0) && (balances[_from] >= _value));
require(balances[_to] + _value > balances[_to]);
balances[_from] -= _value;
balances[_to] += _value;
emit Transfer(_from, _to, _value);
return true;
}
function transfer(address _to, uint256 _value)
public
returns (bool success)
{
return _transfer(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value)
public
returns (bool success)
{
require(_value <= allowed[_from][msg.sender]);
allowed[_from][msg.sender] -= _value;
return _transfer(_from, _to, _value);
}
}
library SafeMath {
function mul(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract CrowdSaleTeleToken is Owned {
using SafeMath for uint256;
uint256 public price;
ERC20Token public crowdSaleToken;
constructor(uint256 _price, address _tokenAddress)
public
{
price = _price;
crowdSaleToken = ERC20Token(_tokenAddress);
}
function ()
payable
public
{
uint256 amount = msg.value / price;
require(amount != 0);
crowdSaleToken.transfer(msg.sender, amount.mul(10**18));
}
function withdrawalEth(uint256 _amount)
public
onlyOwner
{
msg.sender.transfer(_amount);
}
function withdrawalToken(uint256 _amount)
public
onlyOwner
{
crowdSaleToken.transfer(msg.sender, _amount);
}
function setPrice(uint256 _price)
public
onlyOwner
{
assert(_price != 0);
price = _price;
}
} |