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/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2019 Ripple Labs Inc.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef RIPPLE_RPC_CTID_H_INCLUDED
#define RIPPLE_RPC_CTID_H_INCLUDED
#include <boost/algorithm/string/predicate.hpp>
#include <boost/regex.hpp>
#include <optional>
#include <regex>
#include <sstream>
namespace ripple {
namespace RPC {
inline std::optional<std::string>
encodeCTID(
uint32_t ledger_seq,
uint16_t txn_index,
uint16_t network_id) noexcept
{
if (ledger_seq > 0x0FFF'FFFF)
return {};
uint64_t ctidValue =
((0xC000'0000ULL + static_cast<uint64_t>(ledger_seq)) << 32) +
(static_cast<uint64_t>(txn_index) << 16) + network_id;
std::stringstream buffer;
buffer << std::hex << std::uppercase << std::setfill('0') << std::setw(16)
<< ctidValue;
return {buffer.str()};
}
template <typename T>
inline std::optional<std::tuple<uint32_t, uint16_t, uint16_t>>
decodeCTID(const T ctid) noexcept
{
uint64_t ctidValue{0};
if constexpr (
std::is_same_v<T, std::string> || std::is_same_v<T, char*> ||
std::is_same_v<T, const char*> || std::is_same_v<T, std::string_view>)
{
std::string const ctidString(ctid);
if (ctidString.length() != 16)
return {};
if (!boost::regex_match(ctidString, boost::regex("^[0-9A-F]+$")))
return {};
ctidValue = std::stoull(ctidString, nullptr, 16);
}
else if constexpr (std::is_integral_v<T>)
ctidValue = ctid;
else
return {};
if ((ctidValue & 0xF000'0000'0000'0000ULL) != 0xC000'0000'0000'0000ULL)
return {};
uint32_t ledger_seq = (ctidValue >> 32) & 0xFFFF'FFFUL;
uint16_t txn_index = (ctidValue >> 16) & 0xFFFFU;
uint16_t network_id = ctidValue & 0xFFFFU;
return {{ledger_seq, txn_index, network_id}};
}
} // namespace RPC
} // namespace ripple
#endif
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