jtimon
10 years ago
26 changed files with 441 additions and 419 deletions
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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 "core/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", 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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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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@ -0,0 +1,276 @@
@@ -0,0 +1,276 @@
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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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#ifndef H_BITCOIN_CORE_TRANSACTION |
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#define H_BITCOIN_CORE_TRANSACTION |
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#include "amount.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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/** 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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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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/** An output of a transaction. It contains the public key that the next input
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* must be able to sign with to claim it. |
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*/ |
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class CTxOut |
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{ |
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public: |
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CAmount nValue; |
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CScript scriptPubKey; |
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CTxOut() |
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{ |
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SetNull(); |
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} |
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CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn); |
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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(nValue); |
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READWRITE(scriptPubKey); |
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} |
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void SetNull() |
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{ |
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nValue = -1; |
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scriptPubKey.clear(); |
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} |
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bool IsNull() const |
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{ |
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return (nValue == -1); |
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} |
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uint256 GetHash() const; |
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bool IsDust(CFeeRate minRelayTxFee) const |
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{ |
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// "Dust" is defined in terms of CTransaction::minRelayTxFee,
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// which has units satoshis-per-kilobyte.
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// If you'd pay more than 1/3 in fees
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// to spend something, then we consider it dust.
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// A typical txout is 34 bytes big, and will
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// need a CTxIn of at least 148 bytes to spend:
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// so dust is a txout less than 546 satoshis
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// with default minRelayTxFee.
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size_t nSize = GetSerializeSize(SER_DISK,0)+148u; |
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return (nValue < 3*minRelayTxFee.GetFee(nSize)); |
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} |
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friend bool operator==(const CTxOut& a, const CTxOut& b) |
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{ |
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return (a.nValue == b.nValue && |
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a.scriptPubKey == b.scriptPubKey); |
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} |
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friend bool operator!=(const CTxOut& a, const CTxOut& 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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struct CMutableTransaction; |
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/** The basic transaction that is broadcasted on the network and contained in
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* blocks. A transaction can contain multiple inputs and outputs. |
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*/ |
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class CTransaction |
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{ |
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private: |
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/** Memory only. */ |
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const uint256 hash; |
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void UpdateHash() const; |
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public: |
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static const int32_t CURRENT_VERSION=1; |
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// The local variables are made const to prevent unintended modification
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// without updating the cached hash value. However, CTransaction is not
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// actually immutable; deserialization and assignment are implemented,
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// and bypass the constness. This is safe, as they update the entire
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// structure, including the hash.
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const int32_t nVersion; |
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const std::vector<CTxIn> vin; |
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const std::vector<CTxOut> vout; |
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const uint32_t nLockTime; |
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/** Construct a CTransaction that qualifies as IsNull() */ |
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CTransaction(); |
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/** Convert a CMutableTransaction into a CTransaction. */ |
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CTransaction(const CMutableTransaction &tx); |
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CTransaction& operator=(const CTransaction& tx); |
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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(*const_cast<int32_t*>(&this->nVersion)); |
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nVersion = this->nVersion; |
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READWRITE(*const_cast<std::vector<CTxIn>*>(&vin)); |
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READWRITE(*const_cast<std::vector<CTxOut>*>(&vout)); |
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READWRITE(*const_cast<uint32_t*>(&nLockTime)); |
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if (ser_action.ForRead()) |
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UpdateHash(); |
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} |
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bool IsNull() const { |
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return vin.empty() && vout.empty(); |
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} |
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const uint256& GetHash() const { |
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return hash; |
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} |
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// Return sum of txouts.
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CAmount GetValueOut() const; |
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// GetValueIn() is a method on CCoinsViewCache, because
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// inputs must be known to compute value in.
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// Compute priority, given priority of inputs and (optionally) tx size
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double ComputePriority(double dPriorityInputs, unsigned int nTxSize=0) const; |
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// Compute modified tx size for priority calculation (optionally given tx size)
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unsigned int CalculateModifiedSize(unsigned int nTxSize=0) const; |
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bool IsCoinBase() const |
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{ |
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return (vin.size() == 1 && vin[0].prevout.IsNull()); |
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} |
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friend bool operator==(const CTransaction& a, const CTransaction& b) |
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{ |
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return a.hash == b.hash; |
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} |
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friend bool operator!=(const CTransaction& a, const CTransaction& b) |
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{ |
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return a.hash != b.hash; |
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} |
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std::string ToString() const; |
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}; |
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/** A mutable version of CTransaction. */ |
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struct CMutableTransaction |
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{ |
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int32_t nVersion; |
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std::vector<CTxIn> vin; |
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std::vector<CTxOut> vout; |
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uint32_t nLockTime; |
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CMutableTransaction(); |
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CMutableTransaction(const CTransaction& tx); |
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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(this->nVersion); |
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nVersion = this->nVersion; |
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READWRITE(vin); |
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READWRITE(vout); |
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READWRITE(nLockTime); |
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} |
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/** Compute the hash of this CMutableTransaction. This is computed on the
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* fly, as opposed to GetHash() in CTransaction, which uses a cached result. |
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*/ |
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uint256 GetHash() const; |
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}; |
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#endif // H_BITCOIN_CORE_TRANSACTION
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