d342424301
This makes the following changes: * In undo data and the chainstate database, the transaction nVersion field is removed from the data structures, always written as 0, and ignored when reading. * The definition of hash_serialized in gettxoutsetinfo is changed to no longer incude the nVersion field. It is renamed to hash_serialized_2 to avoid confusion. The new definition also includes transaction height and coinbase information, as this information was missing before. This depends on having a CHashVerifier-based undo data checksum verifier. Apart from changing the definition of serialized_hash, downgrading after using this patch is supported, as no release ever used the value of nVersion field in UTXO entries.
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2016 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_UNDO_H
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#define BITCOIN_UNDO_H
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#include "compressor.h"
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#include "primitives/transaction.h"
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#include "serialize.h"
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/** Undo information for a CTxIn
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*
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* Contains the prevout's CTxOut being spent, and if this was the
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* last output of the affected transaction, its metadata as well
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* (coinbase or not, height). Earlier versions also stored the transaction
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* version.
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*/
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class CTxInUndo
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{
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public:
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CTxOut txout; // the txout data before being spent
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bool fCoinBase; // if the outpoint was the last unspent: whether it belonged to a coinbase
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unsigned int nHeight; // if the outpoint was the last unspent: its height
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CTxInUndo() : txout(), fCoinBase(false), nHeight(0) {}
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CTxInUndo(const CTxOut &txoutIn, bool fCoinBaseIn = false, unsigned int nHeightIn = 0) : txout(txoutIn), fCoinBase(fCoinBaseIn), nHeight(nHeightIn) { }
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template<typename Stream>
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void Serialize(Stream &s) const {
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::Serialize(s, VARINT(nHeight*2+(fCoinBase ? 1 : 0)));
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if (nHeight > 0) {
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int nVersionDummy = 0;
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::Serialize(s, VARINT(nVersionDummy));
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}
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::Serialize(s, CTxOutCompressor(REF(txout)));
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}
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template<typename Stream>
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void Unserialize(Stream &s) {
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unsigned int nCode = 0;
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::Unserialize(s, VARINT(nCode));
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nHeight = nCode / 2;
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fCoinBase = nCode & 1;
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if (nHeight > 0) {
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int nVersionDummy;
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::Unserialize(s, VARINT(nVersionDummy));
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}
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::Unserialize(s, REF(CTxOutCompressor(REF(txout))));
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}
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};
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/** Undo information for a CTransaction */
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class CTxUndo
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{
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public:
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// undo information for all txins
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std::vector<CTxInUndo> vprevout;
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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) {
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READWRITE(vprevout);
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}
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};
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/** Undo information for a CBlock */
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class CBlockUndo
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{
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public:
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std::vector<CTxUndo> vtxundo; // for all but the coinbase
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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) {
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READWRITE(vtxundo);
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}
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};
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#endif // BITCOIN_UNDO_H
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