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0.1099f41b9MOVEONLY: core.o -> core/block.o (jtimon)561e9e9MOVEONLY: Move script/compressor out of script and put CTxOutCompressor (from core) with it (jtimon)999a2abMOVEONLY: separate CTxUndo out of core (jtimon)4a3587dMOVEONLY: Separate CTransaction and dependencies from core (jtimon)eda3733MOVEONLY: Move CFeeRate and Amount constants to amount.o (jtimon)
Pieter Wuille
10 years ago
41 changed files with 992 additions and 939 deletions
@ -0,0 +1,31 @@
@@ -0,0 +1,31 @@
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// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 The Bitcoin 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 "amount.h" |
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#include "tinyformat.h" |
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CFeeRate::CFeeRate(const CAmount& nFeePaid, size_t nSize) |
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{ |
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if (nSize > 0) |
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nSatoshisPerK = nFeePaid*1000/nSize; |
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else |
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nSatoshisPerK = 0; |
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} |
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CAmount CFeeRate::GetFee(size_t nSize) const |
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{ |
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CAmount nFee = nSatoshisPerK*nSize / 1000; |
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if (nFee == 0 && nSatoshisPerK > 0) |
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nFee = nSatoshisPerK; |
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return nFee; |
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} |
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std::string CFeeRate::ToString() const |
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{ |
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return strprintf("%d.%08d BTC/kB", nSatoshisPerK / COIN, nSatoshisPerK % COIN); |
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} |
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@ -1,339 +0,0 @@
@@ -1,339 +0,0 @@
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// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 The Bitcoin developers
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// Distributed under the MIT/X11 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 "core.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", scriptSig.ToString().substr(0,24)); |
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if (nSequence != std::numeric_limits<unsigned int>::max()) |
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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, scriptPubKey.ToString().substr(0,30)); |
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} |
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CFeeRate::CFeeRate(const CAmount& nFeePaid, size_t nSize) |
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{ |
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if (nSize > 0) |
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nSatoshisPerK = nFeePaid*1000/nSize; |
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else |
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nSatoshisPerK = 0; |
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} |
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CAmount CFeeRate::GetFee(size_t nSize) const |
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{ |
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CAmount nFee = nSatoshisPerK*nSize / 1000; |
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if (nFee == 0 && nSatoshisPerK > 0) |
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nFee = nSatoshisPerK; |
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return nFee; |
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} |
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std::string CFeeRate::ToString() const |
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{ |
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return strprintf("%d.%08d BTC/kB", nSatoshisPerK / COIN, nSatoshisPerK % COIN); |
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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() : hash(0), 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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// Amount compression:
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// * If the amount is 0, output 0
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// * first, divide the amount (in base units) by the largest power of 10 possible; call the exponent e (e is max 9)
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// * if e<9, the last digit of the resulting number cannot be 0; store it as d, and drop it (divide by 10)
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// * call the result n
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// * output 1 + 10*(9*n + d - 1) + e
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// * if e==9, we only know the resulting number is not zero, so output 1 + 10*(n - 1) + 9
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// (this is decodable, as d is in [1-9] and e is in [0-9])
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uint64_t CTxOutCompressor::CompressAmount(uint64_t n) |
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{ |
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if (n == 0) |
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return 0; |
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int e = 0; |
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while (((n % 10) == 0) && e < 9) { |
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n /= 10; |
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e++; |
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} |
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if (e < 9) { |
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int d = (n % 10); |
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assert(d >= 1 && d <= 9); |
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n /= 10; |
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return 1 + (n*9 + d - 1)*10 + e; |
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} else { |
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return 1 + (n - 1)*10 + 9; |
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} |
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} |
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uint64_t CTxOutCompressor::DecompressAmount(uint64_t x) |
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{ |
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// x = 0 OR x = 1+10*(9*n + d - 1) + e OR x = 1+10*(n - 1) + 9
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if (x == 0) |
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return 0; |
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x--; |
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// x = 10*(9*n + d - 1) + e
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int e = x % 10; |
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x /= 10; |
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uint64_t n = 0; |
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if (e < 9) { |
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// x = 9*n + d - 1
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int d = (x % 9) + 1; |
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x /= 9; |
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// x = n
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n = x*10 + d; |
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} else { |
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n = x+1; |
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} |
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while (e) { |
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n *= 10; |
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e--; |
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} |
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return n; |
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} |
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uint256 CBlockHeader::GetHash() const |
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{ |
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return Hash(BEGIN(nVersion), END(nNonce)); |
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} |
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uint256 CBlock::BuildMerkleTree(bool* fMutated) const |
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{ |
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/* WARNING! If you're reading this because you're learning about crypto
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and/or designing a new system that will use merkle trees, keep in mind |
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that the following merkle tree algorithm has a serious flaw related to |
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duplicate txids, resulting in a vulnerability (CVE-2012-2459). |
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The reason is that if the number of hashes in the list at a given time |
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is odd, the last one is duplicated before computing the next level (which |
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is unusual in Merkle trees). This results in certain sequences of |
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transactions leading to the same merkle root. For example, these two |
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trees: |
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A A |
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/ \ / \ |
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B C B C |
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/ \ | / \ / \ |
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D E F D E F F |
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/ \ / \ / \ / \ / \ / \ / \ |
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1 2 3 4 5 6 1 2 3 4 5 6 5 6 |
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for transaction lists [1,2,3,4,5,6] and [1,2,3,4,5,6,5,6] (where 5 and |
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6 are repeated) result in the same root hash A (because the hash of both |
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of (F) and (F,F) is C). |
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The vulnerability results from being able to send a block with such a |
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transaction list, with the same merkle root, and the same block hash as |
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the original without duplication, resulting in failed validation. If the |
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receiving node proceeds to mark that block as permanently invalid |
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however, it will fail to accept further unmodified (and thus potentially |
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valid) versions of the same block. We defend against this by detecting |
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the case where we would hash two identical hashes at the end of the list |
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together, and treating that identically to the block having an invalid |
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merkle root. Assuming no double-SHA256 collisions, this will detect all |
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known ways of changing the transactions without affecting the merkle |
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root. |
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*/ |
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vMerkleTree.clear(); |
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vMerkleTree.reserve(vtx.size() * 2 + 16); // Safe upper bound for the number of total nodes.
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for (std::vector<CTransaction>::const_iterator it(vtx.begin()); it != vtx.end(); ++it) |
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vMerkleTree.push_back(it->GetHash()); |
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int j = 0; |
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bool mutated = false; |
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for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2) |
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{ |
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for (int i = 0; i < nSize; i += 2) |
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{ |
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int i2 = std::min(i+1, nSize-1); |
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if (i2 == i + 1 && i2 + 1 == nSize && vMerkleTree[j+i] == vMerkleTree[j+i2]) { |
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// Two identical hashes at the end of the list at a particular level.
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mutated = true; |
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} |
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vMerkleTree.push_back(Hash(BEGIN(vMerkleTree[j+i]), END(vMerkleTree[j+i]), |
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BEGIN(vMerkleTree[j+i2]), END(vMerkleTree[j+i2]))); |
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} |
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j += nSize; |
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} |
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if (fMutated) { |
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*fMutated = mutated; |
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} |
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return (vMerkleTree.empty() ? 0 : vMerkleTree.back()); |
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} |
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std::vector<uint256> CBlock::GetMerkleBranch(int nIndex) const |
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{ |
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if (vMerkleTree.empty()) |
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BuildMerkleTree(); |
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std::vector<uint256> vMerkleBranch; |
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int j = 0; |
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for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2) |
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{ |
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int i = std::min(nIndex^1, nSize-1); |
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vMerkleBranch.push_back(vMerkleTree[j+i]); |
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nIndex >>= 1; |
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j += nSize; |
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} |
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return vMerkleBranch; |
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} |
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uint256 CBlock::CheckMerkleBranch(uint256 hash, const std::vector<uint256>& vMerkleBranch, int nIndex) |
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{ |
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if (nIndex == -1) |
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return 0; |
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for (std::vector<uint256>::const_iterator it(vMerkleBranch.begin()); it != vMerkleBranch.end(); ++it) |
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{ |
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if (nIndex & 1) |
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hash = Hash(BEGIN(*it), END(*it), BEGIN(hash), END(hash)); |
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else |
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hash = Hash(BEGIN(hash), END(hash), BEGIN(*it), END(*it)); |
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nIndex >>= 1; |
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} |
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return hash; |
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} |
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std::string CBlock::ToString() const |
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{ |
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std::stringstream s; |
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s << strprintf("CBlock(hash=%s, ver=%d, hashPrevBlock=%s, hashMerkleRoot=%s, nTime=%u, nBits=%08x, nNonce=%u, vtx=%u)\n", |
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GetHash().ToString(), |
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nVersion, |
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hashPrevBlock.ToString(), |
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hashMerkleRoot.ToString(), |
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nTime, nBits, nNonce, |
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vtx.size()); |
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for (unsigned int i = 0; i < vtx.size(); i++) |
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{ |
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s << " " << vtx[i].ToString() << "\n"; |
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} |
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s << " vMerkleTree: "; |
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for (unsigned int i = 0; i < vMerkleTree.size(); i++) |
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s << " " << vMerkleTree[i].ToString(); |
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s << "\n"; |
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return s.str(); |
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} |
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@ -1,566 +0,0 @@
@@ -1,566 +0,0 @@
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// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2013 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_CORE_H |
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#define BITCOIN_CORE_H |
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#include "amount.h" |
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#include "script/compressor.h" |
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#include "script/script.h" |
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#include "serialize.h" |
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#include "uint256.h" |
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#include <stdint.h> |
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class CTransaction; |
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static const int64_t COIN = 100000000; |
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static const int64_t CENT = 1000000; |
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/** No amount larger than this (in satoshi) is valid */ |
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static const CAmount MAX_MONEY = 21000000 * COIN; |
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inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); } |
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/** An outpoint - a combination of a transaction hash and an index n into its vout */ |
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class COutPoint |
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{ |
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public: |
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uint256 hash; |
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uint32_t n; |
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COutPoint() { SetNull(); } |
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COutPoint(uint256 hashIn, uint32_t nIn) { hash = hashIn; n = nIn; } |
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ADD_SERIALIZE_METHODS; |
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template <typename Stream, typename Operation> |
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inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
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READWRITE(FLATDATA(*this)); |
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} |
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void SetNull() { hash = 0; n = (uint32_t) -1; } |
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bool IsNull() const { return (hash == 0 && n == (uint32_t) -1); } |
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friend bool operator<(const COutPoint& a, const COutPoint& b) |
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{ |
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return (a.hash < b.hash || (a.hash == b.hash && a.n < b.n)); |
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} |
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friend bool operator==(const COutPoint& a, const COutPoint& b) |
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{ |
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return (a.hash == b.hash && a.n == b.n); |
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} |
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friend bool operator!=(const COutPoint& a, const COutPoint& b) |
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{ |
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return !(a == b); |
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} |
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std::string ToString() const; |
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}; |
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/** An input of a transaction. It contains the location of the previous
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* transaction's output that it claims and a signature that matches the |
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* output's public key. |
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*/ |
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class CTxIn |
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{ |
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public: |
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COutPoint prevout; |
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CScript scriptSig; |
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uint32_t nSequence; |
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CTxIn() |
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{ |
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nSequence = std::numeric_limits<unsigned int>::max(); |
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} |
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explicit CTxIn(COutPoint prevoutIn, CScript scriptSigIn=CScript(), uint32_t nSequenceIn=std::numeric_limits<unsigned int>::max()); |
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CTxIn(uint256 hashPrevTx, uint32_t nOut, CScript scriptSigIn=CScript(), uint32_t nSequenceIn=std::numeric_limits<uint32_t>::max()); |
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ADD_SERIALIZE_METHODS; |
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template <typename Stream, typename Operation> |
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inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
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READWRITE(prevout); |
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READWRITE(scriptSig); |
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READWRITE(nSequence); |
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} |
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bool IsFinal() const |
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{ |
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return (nSequence == std::numeric_limits<uint32_t>::max()); |
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} |
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|
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friend bool operator==(const CTxIn& a, const CTxIn& b) |
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{ |
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return (a.prevout == b.prevout && |
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a.scriptSig == b.scriptSig && |
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a.nSequence == b.nSequence); |
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} |
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friend bool operator!=(const CTxIn& a, const CTxIn& b) |
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{ |
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return !(a == b); |
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} |
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std::string ToString() const; |
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}; |
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/** Type-safe wrapper class to for fee rates
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* (how much to pay based on transaction size) |
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*/ |
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class CFeeRate |
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{ |
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private: |
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CAmount nSatoshisPerK; // unit is satoshis-per-1,000-bytes
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public: |
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CFeeRate() : nSatoshisPerK(0) { } |
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explicit CFeeRate(const CAmount& _nSatoshisPerK): nSatoshisPerK(_nSatoshisPerK) { } |
||||
CFeeRate(const CAmount& nFeePaid, size_t nSize); |
||||
CFeeRate(const CFeeRate& other) { nSatoshisPerK = other.nSatoshisPerK; } |
||||
|
||||
CAmount GetFee(size_t size) const; // unit returned is satoshis
|
||||
CAmount GetFeePerK() const { return GetFee(1000); } // satoshis-per-1000-bytes
|
||||
|
||||
friend bool operator<(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK < b.nSatoshisPerK; } |
||||
friend bool operator>(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK > b.nSatoshisPerK; } |
||||
friend bool operator==(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK == b.nSatoshisPerK; } |
||||
friend bool operator<=(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK <= b.nSatoshisPerK; } |
||||
friend bool operator>=(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK >= b.nSatoshisPerK; } |
||||
std::string ToString() const; |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(nSatoshisPerK); |
||||
} |
||||
}; |
||||
|
||||
|
||||
/** An output of a transaction. It contains the public key that the next input
|
||||
* must be able to sign with to claim it. |
||||
*/ |
||||
class CTxOut |
||||
{ |
||||
public: |
||||
CAmount nValue; |
||||
CScript scriptPubKey; |
||||
|
||||
CTxOut() |
||||
{ |
||||
SetNull(); |
||||
} |
||||
|
||||
CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn); |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(nValue); |
||||
READWRITE(scriptPubKey); |
||||
} |
||||
|
||||
void SetNull() |
||||
{ |
||||
nValue = -1; |
||||
scriptPubKey.clear(); |
||||
} |
||||
|
||||
bool IsNull() const |
||||
{ |
||||
return (nValue == -1); |
||||
} |
||||
|
||||
uint256 GetHash() const; |
||||
|
||||
bool IsDust(CFeeRate minRelayTxFee) const |
||||
{ |
||||
// "Dust" is defined in terms of CTransaction::minRelayTxFee,
|
||||
// which has units satoshis-per-kilobyte.
|
||||
// If you'd pay more than 1/3 in fees
|
||||
// to spend something, then we consider it dust.
|
||||
// A typical txout is 34 bytes big, and will
|
||||
// need a CTxIn of at least 148 bytes to spend:
|
||||
// so dust is a txout less than 546 satoshis
|
||||
// with default minRelayTxFee.
|
||||
size_t nSize = GetSerializeSize(SER_DISK,0)+148u; |
||||
return (nValue < 3*minRelayTxFee.GetFee(nSize)); |
||||
} |
||||
|
||||
friend bool operator==(const CTxOut& a, const CTxOut& b) |
||||
{ |
||||
return (a.nValue == b.nValue && |
||||
a.scriptPubKey == b.scriptPubKey); |
||||
} |
||||
|
||||
friend bool operator!=(const CTxOut& a, const CTxOut& b) |
||||
{ |
||||
return !(a == b); |
||||
} |
||||
|
||||
std::string ToString() const; |
||||
}; |
||||
|
||||
|
||||
struct CMutableTransaction; |
||||
|
||||
/** The basic transaction that is broadcasted on the network and contained in
|
||||
* blocks. A transaction can contain multiple inputs and outputs. |
||||
*/ |
||||
class CTransaction |
||||
{ |
||||
private: |
||||
/** Memory only. */ |
||||
const uint256 hash; |
||||
void UpdateHash() const; |
||||
|
||||
public: |
||||
static const int32_t CURRENT_VERSION=1; |
||||
|
||||
// The local variables are made const to prevent unintended modification
|
||||
// without updating the cached hash value. However, CTransaction is not
|
||||
// actually immutable; deserialization and assignment are implemented,
|
||||
// and bypass the constness. This is safe, as they update the entire
|
||||
// structure, including the hash.
|
||||
const int32_t nVersion; |
||||
const std::vector<CTxIn> vin; |
||||
const std::vector<CTxOut> vout; |
||||
const uint32_t nLockTime; |
||||
|
||||
/** Construct a CTransaction that qualifies as IsNull() */ |
||||
CTransaction(); |
||||
|
||||
/** Convert a CMutableTransaction into a CTransaction. */ |
||||
CTransaction(const CMutableTransaction &tx); |
||||
|
||||
CTransaction& operator=(const CTransaction& tx); |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(*const_cast<int32_t*>(&this->nVersion)); |
||||
nVersion = this->nVersion; |
||||
READWRITE(*const_cast<std::vector<CTxIn>*>(&vin)); |
||||
READWRITE(*const_cast<std::vector<CTxOut>*>(&vout)); |
||||
READWRITE(*const_cast<uint32_t*>(&nLockTime)); |
||||
if (ser_action.ForRead()) |
||||
UpdateHash(); |
||||
} |
||||
|
||||
bool IsNull() const { |
||||
return vin.empty() && vout.empty(); |
||||
} |
||||
|
||||
const uint256& GetHash() const { |
||||
return hash; |
||||
} |
||||
|
||||
// Return sum of txouts.
|
||||
CAmount GetValueOut() const; |
||||
// GetValueIn() is a method on CCoinsViewCache, because
|
||||
// inputs must be known to compute value in.
|
||||
|
||||
// Compute priority, given priority of inputs and (optionally) tx size
|
||||
double ComputePriority(double dPriorityInputs, unsigned int nTxSize=0) const; |
||||
|
||||
// Compute modified tx size for priority calculation (optionally given tx size)
|
||||
unsigned int CalculateModifiedSize(unsigned int nTxSize=0) const; |
||||
|
||||
bool IsCoinBase() const |
||||
{ |
||||
return (vin.size() == 1 && vin[0].prevout.IsNull()); |
||||
} |
||||
|
||||
friend bool operator==(const CTransaction& a, const CTransaction& b) |
||||
{ |
||||
return a.hash == b.hash; |
||||
} |
||||
|
||||
friend bool operator!=(const CTransaction& a, const CTransaction& b) |
||||
{ |
||||
return a.hash != b.hash; |
||||
} |
||||
|
||||
std::string ToString() const; |
||||
}; |
||||
|
||||
/** A mutable version of CTransaction. */ |
||||
struct CMutableTransaction |
||||
{ |
||||
int32_t nVersion; |
||||
std::vector<CTxIn> vin; |
||||
std::vector<CTxOut> vout; |
||||
uint32_t nLockTime; |
||||
|
||||
CMutableTransaction(); |
||||
CMutableTransaction(const CTransaction& tx); |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(this->nVersion); |
||||
nVersion = this->nVersion; |
||||
READWRITE(vin); |
||||
READWRITE(vout); |
||||
READWRITE(nLockTime); |
||||
} |
||||
|
||||
/** Compute the hash of this CMutableTransaction. This is computed on the
|
||||
* fly, as opposed to GetHash() in CTransaction, which uses a cached result. |
||||
*/ |
||||
uint256 GetHash() const; |
||||
}; |
||||
|
||||
/** wrapper for CTxOut that provides a more compact serialization */ |
||||
class CTxOutCompressor |
||||
{ |
||||
private: |
||||
CTxOut &txout; |
||||
|
||||
public: |
||||
static uint64_t CompressAmount(uint64_t nAmount); |
||||
static uint64_t DecompressAmount(uint64_t nAmount); |
||||
|
||||
CTxOutCompressor(CTxOut &txoutIn) : txout(txoutIn) { } |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
if (!ser_action.ForRead()) { |
||||
uint64_t nVal = CompressAmount(txout.nValue); |
||||
READWRITE(VARINT(nVal)); |
||||
} else { |
||||
uint64_t nVal = 0; |
||||
READWRITE(VARINT(nVal)); |
||||
txout.nValue = DecompressAmount(nVal); |
||||
} |
||||
CScriptCompressor cscript(REF(txout.scriptPubKey)); |
||||
READWRITE(cscript); |
||||
} |
||||
}; |
||||
|
||||
/** Undo information for a CTxIn
|
||||
* |
||||
* Contains the prevout's CTxOut being spent, and if this was the |
||||
* last output of the affected transaction, its metadata as well |
||||
* (coinbase or not, height, transaction version) |
||||
*/ |
||||
class CTxInUndo |
||||
{ |
||||
public: |
||||
CTxOut txout; // the txout data before being spent
|
||||
bool fCoinBase; // if the outpoint was the last unspent: whether it belonged to a coinbase
|
||||
unsigned int nHeight; // if the outpoint was the last unspent: its height
|
||||
int nVersion; // if the outpoint was the last unspent: its version
|
||||
|
||||
CTxInUndo() : txout(), fCoinBase(false), nHeight(0), nVersion(0) {} |
||||
CTxInUndo(const CTxOut &txoutIn, bool fCoinBaseIn = false, unsigned int nHeightIn = 0, int nVersionIn = 0) : txout(txoutIn), fCoinBase(fCoinBaseIn), nHeight(nHeightIn), nVersion(nVersionIn) { } |
||||
|
||||
unsigned int GetSerializeSize(int nType, int nVersion) const { |
||||
return ::GetSerializeSize(VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion) + |
||||
(nHeight > 0 ? ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion) : 0) + |
||||
::GetSerializeSize(CTxOutCompressor(REF(txout)), nType, nVersion); |
||||
} |
||||
|
||||
template<typename Stream> |
||||
void Serialize(Stream &s, int nType, int nVersion) const { |
||||
::Serialize(s, VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion); |
||||
if (nHeight > 0) |
||||
::Serialize(s, VARINT(this->nVersion), nType, nVersion); |
||||
::Serialize(s, CTxOutCompressor(REF(txout)), nType, nVersion); |
||||
} |
||||
|
||||
template<typename Stream> |
||||
void Unserialize(Stream &s, int nType, int nVersion) { |
||||
unsigned int nCode = 0; |
||||
::Unserialize(s, VARINT(nCode), nType, nVersion); |
||||
nHeight = nCode / 2; |
||||
fCoinBase = nCode & 1; |
||||
if (nHeight > 0) |
||||
::Unserialize(s, VARINT(this->nVersion), nType, nVersion); |
||||
::Unserialize(s, REF(CTxOutCompressor(REF(txout))), nType, nVersion); |
||||
} |
||||
}; |
||||
|
||||
/** Undo information for a CTransaction */ |
||||
class CTxUndo |
||||
{ |
||||
public: |
||||
// undo information for all txins
|
||||
std::vector<CTxInUndo> vprevout; |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(vprevout); |
||||
} |
||||
}; |
||||
|
||||
|
||||
/** Nodes collect new transactions into a block, hash them into a hash tree,
|
||||
* and scan through nonce values to make the block's hash satisfy proof-of-work |
||||
* requirements. When they solve the proof-of-work, they broadcast the block |
||||
* to everyone and the block is added to the block chain. The first transaction |
||||
* in the block is a special one that creates a new coin owned by the creator |
||||
* of the block. |
||||
*/ |
||||
class CBlockHeader |
||||
{ |
||||
public: |
||||
// header
|
||||
static const int32_t CURRENT_VERSION=2; |
||||
int32_t nVersion; |
||||
uint256 hashPrevBlock; |
||||
uint256 hashMerkleRoot; |
||||
uint32_t nTime; |
||||
uint32_t nBits; |
||||
uint32_t nNonce; |
||||
|
||||
CBlockHeader() |
||||
{ |
||||
SetNull(); |
||||
} |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(this->nVersion); |
||||
nVersion = this->nVersion; |
||||
READWRITE(hashPrevBlock); |
||||
READWRITE(hashMerkleRoot); |
||||
READWRITE(nTime); |
||||
READWRITE(nBits); |
||||
READWRITE(nNonce); |
||||
} |
||||
|
||||
void SetNull() |
||||
{ |
||||
nVersion = CBlockHeader::CURRENT_VERSION; |
||||
hashPrevBlock = 0; |
||||
hashMerkleRoot = 0; |
||||
nTime = 0; |
||||
nBits = 0; |
||||
nNonce = 0; |
||||
} |
||||
|
||||
bool IsNull() const |
||||
{ |
||||
return (nBits == 0); |
||||
} |
||||
|
||||
uint256 GetHash() const; |
||||
|
||||
int64_t GetBlockTime() const |
||||
{ |
||||
return (int64_t)nTime; |
||||
} |
||||
}; |
||||
|
||||
|
||||
class CBlock : public CBlockHeader |
||||
{ |
||||
public: |
||||
// network and disk
|
||||
std::vector<CTransaction> vtx; |
||||
|
||||
// memory only
|
||||
mutable std::vector<uint256> vMerkleTree; |
||||
|
||||
CBlock() |
||||
{ |
||||
SetNull(); |
||||
} |
||||
|
||||
CBlock(const CBlockHeader &header) |
||||
{ |
||||
SetNull(); |
||||
*((CBlockHeader*)this) = header; |
||||
} |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(*(CBlockHeader*)this); |
||||
READWRITE(vtx); |
||||
} |
||||
|
||||
void SetNull() |
||||
{ |
||||
CBlockHeader::SetNull(); |
||||
vtx.clear(); |
||||
vMerkleTree.clear(); |
||||
} |
||||
|
||||
CBlockHeader GetBlockHeader() const |
||||
{ |
||||
CBlockHeader block; |
||||
block.nVersion = nVersion; |
||||
block.hashPrevBlock = hashPrevBlock; |
||||
block.hashMerkleRoot = hashMerkleRoot; |
||||
block.nTime = nTime; |
||||
block.nBits = nBits; |
||||
block.nNonce = nNonce; |
||||
return block; |
||||
} |
||||
|
||||
// Build the in-memory merkle tree for this block and return the merkle root.
|
||||
// If non-NULL, *mutated is set to whether mutation was detected in the merkle
|
||||
// tree (a duplication of transactions in the block leading to an identical
|
||||
// merkle root).
|
||||
uint256 BuildMerkleTree(bool* mutated = NULL) const; |
||||
|
||||
std::vector<uint256> GetMerkleBranch(int nIndex) const; |
||||
static uint256 CheckMerkleBranch(uint256 hash, const std::vector<uint256>& vMerkleBranch, int nIndex); |
||||
std::string ToString() const; |
||||
}; |
||||
|
||||
|
||||
/** Describes a place in the block chain to another node such that if the
|
||||
* other node doesn't have the same branch, it can find a recent common trunk. |
||||
* The further back it is, the further before the fork it may be. |
||||
*/ |
||||
struct CBlockLocator |
||||
{ |
||||
std::vector<uint256> vHave; |
||||
|
||||
CBlockLocator() {} |
||||
|
||||
CBlockLocator(const std::vector<uint256>& vHaveIn) |
||||
{ |
||||
vHave = vHaveIn; |
||||
} |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
if (!(nType & SER_GETHASH)) |
||||
READWRITE(nVersion); |
||||
READWRITE(vHave); |
||||
} |
||||
|
||||
void SetNull() |
||||
{ |
||||
vHave.clear(); |
||||
} |
||||
|
||||
bool IsNull() |
||||
{ |
||||
return vHave.empty(); |
||||
} |
||||
}; |
||||
|
||||
#endif // BITCOIN_CORE_H
|
||||
@ -0,0 +1,130 @@
@@ -0,0 +1,130 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2009-2014 The Bitcoin developers
|
||||
// Distributed under the MIT/X11 software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#include "core/block.h" |
||||
|
||||
#include "hash.h" |
||||
#include "tinyformat.h" |
||||
#include "utilstrencodings.h" |
||||
|
||||
uint256 CBlockHeader::GetHash() const |
||||
{ |
||||
return Hash(BEGIN(nVersion), END(nNonce)); |
||||
} |
||||
|
||||
uint256 CBlock::BuildMerkleTree(bool* fMutated) const |
||||
{ |
||||
/* WARNING! If you're reading this because you're learning about crypto
|
||||
and/or designing a new system that will use merkle trees, keep in mind |
||||
that the following merkle tree algorithm has a serious flaw related to |
||||
duplicate txids, resulting in a vulnerability (CVE-2012-2459). |
||||
|
||||
The reason is that if the number of hashes in the list at a given time |
||||
is odd, the last one is duplicated before computing the next level (which |
||||
is unusual in Merkle trees). This results in certain sequences of |
||||
transactions leading to the same merkle root. For example, these two |
||||
trees: |
||||
|
||||
A A |
||||
/ \ / \ |
||||
B C B C |
||||
/ \ | / \ / \ |
||||
D E F D E F F |
||||
/ \ / \ / \ / \ / \ / \ / \ |
||||
1 2 3 4 5 6 1 2 3 4 5 6 5 6 |
||||
|
||||
for transaction lists [1,2,3,4,5,6] and [1,2,3,4,5,6,5,6] (where 5 and |
||||
6 are repeated) result in the same root hash A (because the hash of both |
||||
of (F) and (F,F) is C). |
||||
|
||||
The vulnerability results from being able to send a block with such a |
||||
transaction list, with the same merkle root, and the same block hash as |
||||
the original without duplication, resulting in failed validation. If the |
||||
receiving node proceeds to mark that block as permanently invalid |
||||
however, it will fail to accept further unmodified (and thus potentially |
||||
valid) versions of the same block. We defend against this by detecting |
||||
the case where we would hash two identical hashes at the end of the list |
||||
together, and treating that identically to the block having an invalid |
||||
merkle root. Assuming no double-SHA256 collisions, this will detect all |
||||
known ways of changing the transactions without affecting the merkle |
||||
root. |
||||
*/ |
||||
vMerkleTree.clear(); |
||||
vMerkleTree.reserve(vtx.size() * 2 + 16); // Safe upper bound for the number of total nodes.
|
||||
for (std::vector<CTransaction>::const_iterator it(vtx.begin()); it != vtx.end(); ++it) |
||||
vMerkleTree.push_back(it->GetHash()); |
||||
int j = 0; |
||||
bool mutated = false; |
||||
for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2) |
||||
{ |
||||
for (int i = 0; i < nSize; i += 2) |
||||
{ |
||||
int i2 = std::min(i+1, nSize-1); |
||||
if (i2 == i + 1 && i2 + 1 == nSize && vMerkleTree[j+i] == vMerkleTree[j+i2]) { |
||||
// Two identical hashes at the end of the list at a particular level.
|
||||
mutated = true; |
||||
} |
||||
vMerkleTree.push_back(Hash(BEGIN(vMerkleTree[j+i]), END(vMerkleTree[j+i]), |
||||
BEGIN(vMerkleTree[j+i2]), END(vMerkleTree[j+i2]))); |
||||
} |
||||
j += nSize; |
||||
} |
||||
if (fMutated) { |
||||
*fMutated = mutated; |
||||
} |
||||
return (vMerkleTree.empty() ? 0 : vMerkleTree.back()); |
||||
} |
||||
|
||||
std::vector<uint256> CBlock::GetMerkleBranch(int nIndex) const |
||||
{ |
||||
if (vMerkleTree.empty()) |
||||
BuildMerkleTree(); |
||||
std::vector<uint256> vMerkleBranch; |
||||
int j = 0; |
||||
for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2) |
||||
{ |
||||
int i = std::min(nIndex^1, nSize-1); |
||||
vMerkleBranch.push_back(vMerkleTree[j+i]); |
||||
nIndex >>= 1; |
||||
j += nSize; |
||||
} |
||||
return vMerkleBranch; |
||||
} |
||||
|
||||
uint256 CBlock::CheckMerkleBranch(uint256 hash, const std::vector<uint256>& vMerkleBranch, int nIndex) |
||||
{ |
||||
if (nIndex == -1) |
||||
return 0; |
||||
for (std::vector<uint256>::const_iterator it(vMerkleBranch.begin()); it != vMerkleBranch.end(); ++it) |
||||
{ |
||||
if (nIndex & 1) |
||||
hash = Hash(BEGIN(*it), END(*it), BEGIN(hash), END(hash)); |
||||
else |
||||
hash = Hash(BEGIN(hash), END(hash), BEGIN(*it), END(*it)); |
||||
nIndex >>= 1; |
||||
} |
||||
return hash; |
||||
} |
||||
|
||||
std::string CBlock::ToString() const |
||||
{ |
||||
std::stringstream s; |
||||
s << strprintf("CBlock(hash=%s, ver=%d, hashPrevBlock=%s, hashMerkleRoot=%s, nTime=%u, nBits=%08x, nNonce=%u, vtx=%u)\n", |
||||
GetHash().ToString(), |
||||
nVersion, |
||||
hashPrevBlock.ToString(), |
||||
hashMerkleRoot.ToString(), |
||||
nTime, nBits, nNonce, |
||||
vtx.size()); |
||||
for (unsigned int i = 0; i < vtx.size(); i++) |
||||
{ |
||||
s << " " << vtx[i].ToString() << "\n"; |
||||
} |
||||
s << " vMerkleTree: "; |
||||
for (unsigned int i = 0; i < vMerkleTree.size(); i++) |
||||
s << " " << vMerkleTree[i].ToString(); |
||||
s << "\n"; |
||||
return s.str(); |
||||
} |
||||
@ -0,0 +1,168 @@
@@ -0,0 +1,168 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2009-2013 The Bitcoin developers
|
||||
// Distributed under the MIT/X11 software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#ifndef H_BITCOIN_CORE_BLOCK |
||||
#define H_BITCOIN_CORE_BLOCK |
||||
|
||||
#include "core/transaction.h" |
||||
#include "serialize.h" |
||||
#include "uint256.h" |
||||
|
||||
/** Nodes collect new transactions into a block, hash them into a hash tree,
|
||||
* and scan through nonce values to make the block's hash satisfy proof-of-work |
||||
* requirements. When they solve the proof-of-work, they broadcast the block |
||||
* to everyone and the block is added to the block chain. The first transaction |
||||
* in the block is a special one that creates a new coin owned by the creator |
||||
* of the block. |
||||
*/ |
||||
class CBlockHeader |
||||
{ |
||||
public: |
||||
// header
|
||||
static const int32_t CURRENT_VERSION=2; |
||||
int32_t nVersion; |
||||
uint256 hashPrevBlock; |
||||
uint256 hashMerkleRoot; |
||||
uint32_t nTime; |
||||
uint32_t nBits; |
||||
uint32_t nNonce; |
||||
|
||||
CBlockHeader() |
||||
{ |
||||
SetNull(); |
||||
} |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(this->nVersion); |
||||
nVersion = this->nVersion; |
||||
READWRITE(hashPrevBlock); |
||||
READWRITE(hashMerkleRoot); |
||||
READWRITE(nTime); |
||||
READWRITE(nBits); |
||||
READWRITE(nNonce); |
||||
} |
||||
|
||||
void SetNull() |
||||
{ |
||||
nVersion = CBlockHeader::CURRENT_VERSION; |
||||
hashPrevBlock = 0; |
||||
hashMerkleRoot = 0; |
||||
nTime = 0; |
||||
nBits = 0; |
||||
nNonce = 0; |
||||
} |
||||
|
||||
bool IsNull() const |
||||
{ |
||||
return (nBits == 0); |
||||
} |
||||
|
||||
uint256 GetHash() const; |
||||
|
||||
int64_t GetBlockTime() const |
||||
{ |
||||
return (int64_t)nTime; |
||||
} |
||||
}; |
||||
|
||||
|
||||
class CBlock : public CBlockHeader |
||||
{ |
||||
public: |
||||
// network and disk
|
||||
std::vector<CTransaction> vtx; |
||||
|
||||
// memory only
|
||||
mutable std::vector<uint256> vMerkleTree; |
||||
|
||||
CBlock() |
||||
{ |
||||
SetNull(); |
||||
} |
||||
|
||||
CBlock(const CBlockHeader &header) |
||||
{ |
||||
SetNull(); |
||||
*((CBlockHeader*)this) = header; |
||||
} |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(*(CBlockHeader*)this); |
||||
READWRITE(vtx); |
||||
} |
||||
|
||||
void SetNull() |
||||
{ |
||||
CBlockHeader::SetNull(); |
||||
vtx.clear(); |
||||
vMerkleTree.clear(); |
||||
} |
||||
|
||||
CBlockHeader GetBlockHeader() const |
||||
{ |
||||
CBlockHeader block; |
||||
block.nVersion = nVersion; |
||||
block.hashPrevBlock = hashPrevBlock; |
||||
block.hashMerkleRoot = hashMerkleRoot; |
||||
block.nTime = nTime; |
||||
block.nBits = nBits; |
||||
block.nNonce = nNonce; |
||||
return block; |
||||
} |
||||
|
||||
// Build the in-memory merkle tree for this block and return the merkle root.
|
||||
// If non-NULL, *mutated is set to whether mutation was detected in the merkle
|
||||
// tree (a duplication of transactions in the block leading to an identical
|
||||
// merkle root).
|
||||
uint256 BuildMerkleTree(bool* mutated = NULL) const; |
||||
|
||||
std::vector<uint256> GetMerkleBranch(int nIndex) const; |
||||
static uint256 CheckMerkleBranch(uint256 hash, const std::vector<uint256>& vMerkleBranch, int nIndex); |
||||
std::string ToString() const; |
||||
}; |
||||
|
||||
|
||||
/** Describes a place in the block chain to another node such that if the
|
||||
* other node doesn't have the same branch, it can find a recent common trunk. |
||||
* The further back it is, the further before the fork it may be. |
||||
*/ |
||||
struct CBlockLocator |
||||
{ |
||||
std::vector<uint256> vHave; |
||||
|
||||
CBlockLocator() {} |
||||
|
||||
CBlockLocator(const std::vector<uint256>& vHaveIn) |
||||
{ |
||||
vHave = vHaveIn; |
||||
} |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
if (!(nType & SER_GETHASH)) |
||||
READWRITE(nVersion); |
||||
READWRITE(vHave); |
||||
} |
||||
|
||||
void SetNull() |
||||
{ |
||||
vHave.clear(); |
||||
} |
||||
|
||||
bool IsNull() |
||||
{ |
||||
return vHave.empty(); |
||||
} |
||||
}; |
||||
|
||||
#endif // H_BITCOIN_CORE_BLOCK
|
||||
@ -0,0 +1,142 @@
@@ -0,0 +1,142 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2009-2014 The Bitcoin developers
|
||||
// Distributed under the MIT software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#include "core/transaction.h" |
||||
|
||||
#include "hash.h" |
||||
#include "tinyformat.h" |
||||
#include "utilstrencodings.h" |
||||
|
||||
std::string COutPoint::ToString() const |
||||
{ |
||||
return strprintf("COutPoint(%s, %u)", hash.ToString().substr(0,10), n); |
||||
} |
||||
|
||||
CTxIn::CTxIn(COutPoint prevoutIn, CScript scriptSigIn, uint32_t nSequenceIn) |
||||
{ |
||||
prevout = prevoutIn; |
||||
scriptSig = scriptSigIn; |
||||
nSequence = nSequenceIn; |
||||
} |
||||
|
||||
CTxIn::CTxIn(uint256 hashPrevTx, uint32_t nOut, CScript scriptSigIn, uint32_t nSequenceIn) |
||||
{ |
||||
prevout = COutPoint(hashPrevTx, nOut); |
||||
scriptSig = scriptSigIn; |
||||
nSequence = nSequenceIn; |
||||
} |
||||
|
||||
std::string CTxIn::ToString() const |
||||
{ |
||||
std::string str; |
||||
str += "CTxIn("; |
||||
str += prevout.ToString(); |
||||
if (prevout.IsNull()) |
||||
str += strprintf(", coinbase %s", HexStr(scriptSig)); |
||||
else |
||||
str += strprintf(", scriptSig=%s", scriptSig.ToString().substr(0,24)); |
||||
if (nSequence != std::numeric_limits<unsigned int>::max()) |
||||
str += strprintf(", nSequence=%u", nSequence); |
||||
str += ")"; |
||||
return str; |
||||
} |
||||
|
||||
CTxOut::CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn) |
||||
{ |
||||
nValue = nValueIn; |
||||
scriptPubKey = scriptPubKeyIn; |
||||
} |
||||
|
||||
uint256 CTxOut::GetHash() const |
||||
{ |
||||
return SerializeHash(*this); |
||||
} |
||||
|
||||
std::string CTxOut::ToString() const |
||||
{ |
||||
return strprintf("CTxOut(nValue=%d.%08d, scriptPubKey=%s)", nValue / COIN, nValue % COIN, scriptPubKey.ToString().substr(0,30)); |
||||
} |
||||
|
||||
CMutableTransaction::CMutableTransaction() : nVersion(CTransaction::CURRENT_VERSION), nLockTime(0) {} |
||||
CMutableTransaction::CMutableTransaction(const CTransaction& tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime) {} |
||||
|
||||
uint256 CMutableTransaction::GetHash() const |
||||
{ |
||||
return SerializeHash(*this); |
||||
} |
||||
|
||||
void CTransaction::UpdateHash() const |
||||
{ |
||||
*const_cast<uint256*>(&hash) = SerializeHash(*this); |
||||
} |
||||
|
||||
CTransaction::CTransaction() : hash(0), nVersion(CTransaction::CURRENT_VERSION), vin(), vout(), nLockTime(0) { } |
||||
|
||||
CTransaction::CTransaction(const CMutableTransaction &tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime) { |
||||
UpdateHash(); |
||||
} |
||||
|
||||
CTransaction& CTransaction::operator=(const CTransaction &tx) { |
||||
*const_cast<int*>(&nVersion) = tx.nVersion; |
||||
*const_cast<std::vector<CTxIn>*>(&vin) = tx.vin; |
||||
*const_cast<std::vector<CTxOut>*>(&vout) = tx.vout; |
||||
*const_cast<unsigned int*>(&nLockTime) = tx.nLockTime; |
||||
*const_cast<uint256*>(&hash) = tx.hash; |
||||
return *this; |
||||
} |
||||
|
||||
CAmount CTransaction::GetValueOut() const |
||||
{ |
||||
CAmount nValueOut = 0; |
||||
for (std::vector<CTxOut>::const_iterator it(vout.begin()); it != vout.end(); ++it) |
||||
{ |
||||
nValueOut += it->nValue; |
||||
if (!MoneyRange(it->nValue) || !MoneyRange(nValueOut)) |
||||
throw std::runtime_error("CTransaction::GetValueOut() : value out of range"); |
||||
} |
||||
return nValueOut; |
||||
} |
||||
|
||||
double CTransaction::ComputePriority(double dPriorityInputs, unsigned int nTxSize) const |
||||
{ |
||||
nTxSize = CalculateModifiedSize(nTxSize); |
||||
if (nTxSize == 0) return 0.0; |
||||
|
||||
return dPriorityInputs / nTxSize; |
||||
} |
||||
|
||||
unsigned int CTransaction::CalculateModifiedSize(unsigned int nTxSize) const |
||||
{ |
||||
// In order to avoid disincentivizing cleaning up the UTXO set we don't count
|
||||
// the constant overhead for each txin and up to 110 bytes of scriptSig (which
|
||||
// is enough to cover a compressed pubkey p2sh redemption) for priority.
|
||||
// Providing any more cleanup incentive than making additional inputs free would
|
||||
// risk encouraging people to create junk outputs to redeem later.
|
||||
if (nTxSize == 0) |
||||
nTxSize = ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION); |
||||
for (std::vector<CTxIn>::const_iterator it(vin.begin()); it != vin.end(); ++it) |
||||
{ |
||||
unsigned int offset = 41U + std::min(110U, (unsigned int)it->scriptSig.size()); |
||||
if (nTxSize > offset) |
||||
nTxSize -= offset; |
||||
} |
||||
return nTxSize; |
||||
} |
||||
|
||||
std::string CTransaction::ToString() const |
||||
{ |
||||
std::string str; |
||||
str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%u, vout.size=%u, nLockTime=%u)\n", |
||||
GetHash().ToString().substr(0,10), |
||||
nVersion, |
||||
vin.size(), |
||||
vout.size(), |
||||
nLockTime); |
||||
for (unsigned int i = 0; i < vin.size(); i++) |
||||
str += " " + vin[i].ToString() + "\n"; |
||||
for (unsigned int i = 0; i < vout.size(); i++) |
||||
str += " " + vout[i].ToString() + "\n"; |
||||
return str; |
||||
} |
||||
@ -0,0 +1,276 @@
@@ -0,0 +1,276 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2009-2014 The Bitcoin developers
|
||||
// Distributed under the MIT software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#ifndef H_BITCOIN_CORE_TRANSACTION |
||||
#define H_BITCOIN_CORE_TRANSACTION |
||||
|
||||
#include "amount.h" |
||||
#include "script/script.h" |
||||
#include "serialize.h" |
||||
#include "uint256.h" |
||||
|
||||
/** An outpoint - a combination of a transaction hash and an index n into its vout */ |
||||
class COutPoint |
||||
{ |
||||
public: |
||||
uint256 hash; |
||||
uint32_t n; |
||||
|
||||
COutPoint() { SetNull(); } |
||||
COutPoint(uint256 hashIn, uint32_t nIn) { hash = hashIn; n = nIn; } |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(FLATDATA(*this)); |
||||
} |
||||
|
||||
void SetNull() { hash = 0; n = (uint32_t) -1; } |
||||
bool IsNull() const { return (hash == 0 && n == (uint32_t) -1); } |
||||
|
||||
friend bool operator<(const COutPoint& a, const COutPoint& b) |
||||
{ |
||||
return (a.hash < b.hash || (a.hash == b.hash && a.n < b.n)); |
||||
} |
||||
|
||||
friend bool operator==(const COutPoint& a, const COutPoint& b) |
||||
{ |
||||
return (a.hash == b.hash && a.n == b.n); |
||||
} |
||||
|
||||
friend bool operator!=(const COutPoint& a, const COutPoint& b) |
||||
{ |
||||
return !(a == b); |
||||
} |
||||
|
||||
std::string ToString() const; |
||||
}; |
||||
|
||||
/** An input of a transaction. It contains the location of the previous
|
||||
* transaction's output that it claims and a signature that matches the |
||||
* output's public key. |
||||
*/ |
||||
class CTxIn |
||||
{ |
||||
public: |
||||
COutPoint prevout; |
||||
CScript scriptSig; |
||||
uint32_t nSequence; |
||||
|
||||
CTxIn() |
||||
{ |
||||
nSequence = std::numeric_limits<unsigned int>::max(); |
||||
} |
||||
|
||||
explicit CTxIn(COutPoint prevoutIn, CScript scriptSigIn=CScript(), uint32_t nSequenceIn=std::numeric_limits<unsigned int>::max()); |
||||
CTxIn(uint256 hashPrevTx, uint32_t nOut, CScript scriptSigIn=CScript(), uint32_t nSequenceIn=std::numeric_limits<uint32_t>::max()); |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(prevout); |
||||
READWRITE(scriptSig); |
||||
READWRITE(nSequence); |
||||
} |
||||
|
||||
bool IsFinal() const |
||||
{ |
||||
return (nSequence == std::numeric_limits<uint32_t>::max()); |
||||
} |
||||
|
||||
friend bool operator==(const CTxIn& a, const CTxIn& b) |
||||
{ |
||||
return (a.prevout == b.prevout && |
||||
a.scriptSig == b.scriptSig && |
||||
a.nSequence == b.nSequence); |
||||
} |
||||
|
||||
friend bool operator!=(const CTxIn& a, const CTxIn& b) |
||||
{ |
||||
return !(a == b); |
||||
} |
||||
|
||||
std::string ToString() const; |
||||
}; |
||||
|
||||
/** An output of a transaction. It contains the public key that the next input
|
||||
* must be able to sign with to claim it. |
||||
*/ |
||||
class CTxOut |
||||
{ |
||||
public: |
||||
CAmount nValue; |
||||
CScript scriptPubKey; |
||||
|
||||
CTxOut() |
||||
{ |
||||
SetNull(); |
||||
} |
||||
|
||||
CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn); |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(nValue); |
||||
READWRITE(scriptPubKey); |
||||
} |
||||
|
||||
void SetNull() |
||||
{ |
||||
nValue = -1; |
||||
scriptPubKey.clear(); |
||||
} |
||||
|
||||
bool IsNull() const |
||||
{ |
||||
return (nValue == -1); |
||||
} |
||||
|
||||
uint256 GetHash() const; |
||||
|
||||
bool IsDust(CFeeRate minRelayTxFee) const |
||||
{ |
||||
// "Dust" is defined in terms of CTransaction::minRelayTxFee,
|
||||
// which has units satoshis-per-kilobyte.
|
||||
// If you'd pay more than 1/3 in fees
|
||||
// to spend something, then we consider it dust.
|
||||
// A typical txout is 34 bytes big, and will
|
||||
// need a CTxIn of at least 148 bytes to spend:
|
||||
// so dust is a txout less than 546 satoshis
|
||||
// with default minRelayTxFee.
|
||||
size_t nSize = GetSerializeSize(SER_DISK,0)+148u; |
||||
return (nValue < 3*minRelayTxFee.GetFee(nSize)); |
||||
} |
||||
|
||||
friend bool operator==(const CTxOut& a, const CTxOut& b) |
||||
{ |
||||
return (a.nValue == b.nValue && |
||||
a.scriptPubKey == b.scriptPubKey); |
||||
} |
||||
|
||||
friend bool operator!=(const CTxOut& a, const CTxOut& b) |
||||
{ |
||||
return !(a == b); |
||||
} |
||||
|
||||
std::string ToString() const; |
||||
}; |
||||
|
||||
struct CMutableTransaction; |
||||
|
||||
/** The basic transaction that is broadcasted on the network and contained in
|
||||
* blocks. A transaction can contain multiple inputs and outputs. |
||||
*/ |
||||
class CTransaction |
||||
{ |
||||
private: |
||||
/** Memory only. */ |
||||
const uint256 hash; |
||||
void UpdateHash() const; |
||||
|
||||
public: |
||||
static const int32_t CURRENT_VERSION=1; |
||||
|
||||
// The local variables are made const to prevent unintended modification
|
||||
// without updating the cached hash value. However, CTransaction is not
|
||||
// actually immutable; deserialization and assignment are implemented,
|
||||
// and bypass the constness. This is safe, as they update the entire
|
||||
// structure, including the hash.
|
||||
const int32_t nVersion; |
||||
const std::vector<CTxIn> vin; |
||||
const std::vector<CTxOut> vout; |
||||
const uint32_t nLockTime; |
||||
|
||||
/** Construct a CTransaction that qualifies as IsNull() */ |
||||
CTransaction(); |
||||
|
||||
/** Convert a CMutableTransaction into a CTransaction. */ |
||||
CTransaction(const CMutableTransaction &tx); |
||||
|
||||
CTransaction& operator=(const CTransaction& tx); |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(*const_cast<int32_t*>(&this->nVersion)); |
||||
nVersion = this->nVersion; |
||||
READWRITE(*const_cast<std::vector<CTxIn>*>(&vin)); |
||||
READWRITE(*const_cast<std::vector<CTxOut>*>(&vout)); |
||||
READWRITE(*const_cast<uint32_t*>(&nLockTime)); |
||||
if (ser_action.ForRead()) |
||||
UpdateHash(); |
||||
} |
||||
|
||||
bool IsNull() const { |
||||
return vin.empty() && vout.empty(); |
||||
} |
||||
|
||||
const uint256& GetHash() const { |
||||
return hash; |
||||
} |
||||
|
||||
// Return sum of txouts.
|
||||
CAmount GetValueOut() const; |
||||
// GetValueIn() is a method on CCoinsViewCache, because
|
||||
// inputs must be known to compute value in.
|
||||
|
||||
// Compute priority, given priority of inputs and (optionally) tx size
|
||||
double ComputePriority(double dPriorityInputs, unsigned int nTxSize=0) const; |
||||
|
||||
// Compute modified tx size for priority calculation (optionally given tx size)
|
||||
unsigned int CalculateModifiedSize(unsigned int nTxSize=0) const; |
||||
|
||||
bool IsCoinBase() const |
||||
{ |
||||
return (vin.size() == 1 && vin[0].prevout.IsNull()); |
||||
} |
||||
|
||||
friend bool operator==(const CTransaction& a, const CTransaction& b) |
||||
{ |
||||
return a.hash == b.hash; |
||||
} |
||||
|
||||
friend bool operator!=(const CTransaction& a, const CTransaction& b) |
||||
{ |
||||
return a.hash != b.hash; |
||||
} |
||||
|
||||
std::string ToString() const; |
||||
}; |
||||
|
||||
/** A mutable version of CTransaction. */ |
||||
struct CMutableTransaction |
||||
{ |
||||
int32_t nVersion; |
||||
std::vector<CTxIn> vin; |
||||
std::vector<CTxOut> vout; |
||||
uint32_t nLockTime; |
||||
|
||||
CMutableTransaction(); |
||||
CMutableTransaction(const CTransaction& tx); |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(this->nVersion); |
||||
nVersion = this->nVersion; |
||||
READWRITE(vin); |
||||
READWRITE(vout); |
||||
READWRITE(nLockTime); |
||||
} |
||||
|
||||
/** Compute the hash of this CMutableTransaction. This is computed on the
|
||||
* fly, as opposed to GetHash() in CTransaction, which uses a cached result. |
||||
*/ |
||||
uint256 GetHash() const; |
||||
}; |
||||
|
||||
#endif // H_BITCOIN_CORE_TRANSACTION
|
||||
@ -0,0 +1,71 @@
@@ -0,0 +1,71 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2009-2013 The Bitcoin developers
|
||||
// Distributed under the MIT software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#ifndef H_BITCOIN_TXUNDO |
||||
#define H_BITCOIN_TXUNDO |
||||
|
||||
#include "compressor.h" |
||||
#include "core/transaction.h" |
||||
#include "serialize.h" |
||||
|
||||
/** Undo information for a CTxIn
|
||||
* |
||||
* Contains the prevout's CTxOut being spent, and if this was the |
||||
* last output of the affected transaction, its metadata as well |
||||
* (coinbase or not, height, transaction version) |
||||
*/ |
||||
class CTxInUndo |
||||
{ |
||||
public: |
||||
CTxOut txout; // the txout data before being spent
|
||||
bool fCoinBase; // if the outpoint was the last unspent: whether it belonged to a coinbase
|
||||
unsigned int nHeight; // if the outpoint was the last unspent: its height
|
||||
int nVersion; // if the outpoint was the last unspent: its version
|
||||
|
||||
CTxInUndo() : txout(), fCoinBase(false), nHeight(0), nVersion(0) {} |
||||
CTxInUndo(const CTxOut &txoutIn, bool fCoinBaseIn = false, unsigned int nHeightIn = 0, int nVersionIn = 0) : txout(txoutIn), fCoinBase(fCoinBaseIn), nHeight(nHeightIn), nVersion(nVersionIn) { } |
||||
|
||||
unsigned int GetSerializeSize(int nType, int nVersion) const { |
||||
return ::GetSerializeSize(VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion) + |
||||
(nHeight > 0 ? ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion) : 0) + |
||||
::GetSerializeSize(CTxOutCompressor(REF(txout)), nType, nVersion); |
||||
} |
||||
|
||||
template<typename Stream> |
||||
void Serialize(Stream &s, int nType, int nVersion) const { |
||||
::Serialize(s, VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion); |
||||
if (nHeight > 0) |
||||
::Serialize(s, VARINT(this->nVersion), nType, nVersion); |
||||
::Serialize(s, CTxOutCompressor(REF(txout)), nType, nVersion); |
||||
} |
||||
|
||||
template<typename Stream> |
||||
void Unserialize(Stream &s, int nType, int nVersion) { |
||||
unsigned int nCode = 0; |
||||
::Unserialize(s, VARINT(nCode), nType, nVersion); |
||||
nHeight = nCode / 2; |
||||
fCoinBase = nCode & 1; |
||||
if (nHeight > 0) |
||||
::Unserialize(s, VARINT(this->nVersion), nType, nVersion); |
||||
::Unserialize(s, REF(CTxOutCompressor(REF(txout))), nType, nVersion); |
||||
} |
||||
}; |
||||
|
||||
/** Undo information for a CTransaction */ |
||||
class CTxUndo |
||||
{ |
||||
public: |
||||
// undo information for all txins
|
||||
std::vector<CTxInUndo> vprevout; |
||||
|
||||
ADD_SERIALIZE_METHODS; |
||||
|
||||
template <typename Stream, typename Operation> |
||||
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
||||
READWRITE(vprevout); |
||||
} |
||||
}; |
||||
|
||||
#endif // H_BITCOIN_TXUNDO
|
||||
Loading…
Reference in new issue