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Diffstat (limited to 'src/core.h')
| -rw-r--r-- | src/core.h | 566 |
1 files changed, 0 insertions, 566 deletions
diff --git a/src/core.h b/src/core.h deleted file mode 100644 index a024dad740..0000000000 --- a/src/core.h +++ /dev/null @@ -1,566 +0,0 @@ -// 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 BITCOIN_CORE_H -#define BITCOIN_CORE_H - -#include "amount.h" -#include "script/compressor.h" -#include "script/script.h" -#include "serialize.h" -#include "uint256.h" - -#include <stdint.h> - -class CTransaction; - -static const int64_t COIN = 100000000; -static const int64_t CENT = 1000000; - -/** No amount larger than this (in satoshi) is valid */ -static const CAmount MAX_MONEY = 21000000 * COIN; -inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); } - -/** 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; -}; - - - -/** Type-safe wrapper class to for fee rates - * (how much to pay based on transaction size) - */ -class CFeeRate -{ -private: - CAmount nSatoshisPerK; // unit is satoshis-per-1,000-bytes -public: - CFeeRate() : nSatoshisPerK(0) { } - 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 |