c6c2f0fd78
SequenceLocks functions are used to evaluate sequence lock times or heights per BIP 68. The majority of this code is copied from maaku in #6312 Further credit: btcdrak, sipa, NicolasDorier
143 lines
4.5 KiB
C++
143 lines
4.5 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "primitives/transaction.h"
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#include "hash.h"
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#include "tinyformat.h"
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#include "utilstrencodings.h"
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std::string COutPoint::ToString() const
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{
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return strprintf("COutPoint(%s, %u)", hash.ToString().substr(0,10), n);
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}
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CTxIn::CTxIn(COutPoint prevoutIn, CScript scriptSigIn, uint32_t nSequenceIn)
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{
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prevout = prevoutIn;
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scriptSig = scriptSigIn;
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nSequence = nSequenceIn;
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}
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CTxIn::CTxIn(uint256 hashPrevTx, uint32_t nOut, CScript scriptSigIn, uint32_t nSequenceIn)
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{
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prevout = COutPoint(hashPrevTx, nOut);
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scriptSig = scriptSigIn;
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nSequence = nSequenceIn;
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}
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std::string CTxIn::ToString() const
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{
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std::string str;
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str += "CTxIn(";
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str += prevout.ToString();
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if (prevout.IsNull())
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str += strprintf(", coinbase %s", HexStr(scriptSig));
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else
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str += strprintf(", scriptSig=%s", HexStr(scriptSig).substr(0, 24));
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if (nSequence != SEQUENCE_FINAL)
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str += strprintf(", nSequence=%u", nSequence);
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str += ")";
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return str;
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}
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CTxOut::CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn)
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{
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nValue = nValueIn;
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scriptPubKey = scriptPubKeyIn;
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}
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uint256 CTxOut::GetHash() const
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{
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return SerializeHash(*this);
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}
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std::string CTxOut::ToString() const
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{
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return strprintf("CTxOut(nValue=%d.%08d, scriptPubKey=%s)", nValue / COIN, nValue % COIN, HexStr(scriptPubKey).substr(0, 30));
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}
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CMutableTransaction::CMutableTransaction() : nVersion(CTransaction::CURRENT_VERSION), nLockTime(0) {}
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CMutableTransaction::CMutableTransaction(const CTransaction& tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime) {}
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uint256 CMutableTransaction::GetHash() const
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{
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return SerializeHash(*this);
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}
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void CTransaction::UpdateHash() const
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{
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*const_cast<uint256*>(&hash) = SerializeHash(*this);
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}
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CTransaction::CTransaction() : nVersion(CTransaction::CURRENT_VERSION), vin(), vout(), nLockTime(0) { }
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CTransaction::CTransaction(const CMutableTransaction &tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime) {
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UpdateHash();
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}
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CTransaction& CTransaction::operator=(const CTransaction &tx) {
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*const_cast<int*>(&nVersion) = tx.nVersion;
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*const_cast<std::vector<CTxIn>*>(&vin) = tx.vin;
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*const_cast<std::vector<CTxOut>*>(&vout) = tx.vout;
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*const_cast<unsigned int*>(&nLockTime) = tx.nLockTime;
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*const_cast<uint256*>(&hash) = tx.hash;
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return *this;
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}
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CAmount CTransaction::GetValueOut() const
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{
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CAmount nValueOut = 0;
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for (std::vector<CTxOut>::const_iterator it(vout.begin()); it != vout.end(); ++it)
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{
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nValueOut += it->nValue;
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if (!MoneyRange(it->nValue) || !MoneyRange(nValueOut))
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throw std::runtime_error("CTransaction::GetValueOut(): value out of range");
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}
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return nValueOut;
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}
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double CTransaction::ComputePriority(double dPriorityInputs, unsigned int nTxSize) const
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{
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nTxSize = CalculateModifiedSize(nTxSize);
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if (nTxSize == 0) return 0.0;
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return dPriorityInputs / nTxSize;
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}
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unsigned int CTransaction::CalculateModifiedSize(unsigned int nTxSize) const
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{
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// In order to avoid disincentivizing cleaning up the UTXO set we don't count
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// the constant overhead for each txin and up to 110 bytes of scriptSig (which
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// is enough to cover a compressed pubkey p2sh redemption) for priority.
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// Providing any more cleanup incentive than making additional inputs free would
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// risk encouraging people to create junk outputs to redeem later.
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if (nTxSize == 0)
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nTxSize = ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION);
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for (std::vector<CTxIn>::const_iterator it(vin.begin()); it != vin.end(); ++it)
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{
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unsigned int offset = 41U + std::min(110U, (unsigned int)it->scriptSig.size());
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if (nTxSize > offset)
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nTxSize -= offset;
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}
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return nTxSize;
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}
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std::string CTransaction::ToString() const
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{
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std::string str;
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str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%u, vout.size=%u, nLockTime=%u)\n",
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GetHash().ToString().substr(0,10),
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nVersion,
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vin.size(),
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vout.size(),
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nLockTime);
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for (unsigned int i = 0; i < vin.size(); i++)
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str += " " + vin[i].ToString() + "\n";
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for (unsigned int i = 0; i < vout.size(); i++)
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str += " " + vout[i].ToString() + "\n";
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return str;
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}
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