X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=src%2Fmain.h;h=21bb4c8a0bc7f798886227184c661b352bfd40be;hb=3b36da6d277c6f5ad671343e724e0336ce55c893;hp=0757ef50ab5affe017f2d02fc72516b36d26b054;hpb=7414733beac92ce8ba365def592d0363fb24872c;p=novacoin.git diff --git a/src/main.h b/src/main.h index 0757ef5..21bb4c8 100644 --- a/src/main.h +++ b/src/main.h @@ -1,6 +1,7 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto +// Copyright (c) 2009-2012 The Bitcoin developers // Distributed under the MIT/X11 software license, see the accompanying -// file license.txt or http://www.opensource.org/licenses/mit-license.php. +// file COPYING or http://www.opensource.org/licenses/mit-license.php. #ifndef BITCOIN_MAIN_H #define BITCOIN_MAIN_H @@ -20,7 +21,6 @@ class CKeyItem; class CReserveKey; class CWalletDB; -class CMessageHeader; class CAddress; class CInv; class CRequestTracker; @@ -30,6 +30,7 @@ class CBlockIndex; static const unsigned int MAX_BLOCK_SIZE = 1000000; static const unsigned int MAX_BLOCK_SIZE_GEN = MAX_BLOCK_SIZE/2; static const int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50; +static const int MAX_ORPHAN_TRANSACTIONS = MAX_BLOCK_SIZE/100; static const int64 COIN = 100000000; static const int64 CENT = 1000000; static const int64 MIN_TX_FEE = 50000; @@ -37,6 +38,8 @@ static const int64 MIN_RELAY_TX_FEE = 10000; static const int64 MAX_MONEY = 21000000 * COIN; inline bool MoneyRange(int64 nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); } static const int COINBASE_MATURITY = 100; +// Threshold for nLockTime: below this value it is interpreted as block number, otherwise as UNIX timestamp. +static const int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 1985 UTC #ifdef USE_UPNP static const int fHaveUPnP = true; #else @@ -51,7 +54,6 @@ static const int fHaveUPnP = false; extern CCriticalSection cs_main; extern std::map mapBlockIndex; extern uint256 hashGenesisBlock; -extern CBigNum bnProofOfWorkLimit; extern CBlockIndex* pindexGenesisBlock; extern int nBestHeight; extern CBigNum bnBestChainWork; @@ -84,6 +86,7 @@ class CTxIndex; void RegisterWallet(CWallet* pwalletIn); void UnregisterWallet(CWallet* pwalletIn); +bool ProcessBlock(CNode* pfrom, CBlock* pblock); bool CheckDiskSpace(uint64 nAdditionalBytes=0); FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode="rb"); FILE* AppendBlockFile(unsigned int& nFileRet); @@ -93,11 +96,12 @@ bool ProcessMessages(CNode* pfrom); bool SendMessages(CNode* pto, bool fSendTrickle); void GenerateBitcoins(bool fGenerate, CWallet* pwallet); CBlock* CreateNewBlock(CReserveKey& reservekey); -void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime); +void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce); void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1); bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey); bool CheckProofOfWork(uint256 hash, unsigned int nBits); -int GetTotalBlocksEstimate(); +unsigned int ComputeMinWork(unsigned int nBase, int64 nTime); +int GetNumBlocksOfPeers(); bool IsInitialBlockDownload(); std::string GetWarnings(std::string strFor); @@ -384,6 +388,7 @@ public: }; +typedef std::map > MapPrevTx; // @@ -398,6 +403,9 @@ public: std::vector vout; unsigned int nLockTime; + // Denial-of-service detection: + mutable int nDoS; + bool DoS(int nDoSIn, bool fIn) const { nDoS += nDoSIn; return fIn; } CTransaction() { @@ -419,6 +427,7 @@ public: vin.clear(); vout.clear(); nLockTime = 0; + nDoS = 0; // Denial-of-service prevention } bool IsNull() const @@ -440,7 +449,7 @@ public: nBlockHeight = nBestHeight; if (nBlockTime == 0) nBlockTime = GetAdjustedTime(); - if ((int64)nLockTime < (nLockTime < 500000000 ? (int64)nBlockHeight : nBlockTime)) + if ((int64)nLockTime < (nLockTime < LOCKTIME_THRESHOLD ? (int64)nBlockHeight : nBlockTime)) return true; BOOST_FOREACH(const CTxIn& txin, vin) if (!txin.IsFinal()) @@ -452,13 +461,13 @@ public: { if (vin.size() != old.vin.size()) return false; - for (int i = 0; i < vin.size(); i++) + for (unsigned int i = 0; i < vin.size(); i++) if (vin[i].prevout != old.vin[i].prevout) return false; bool fNewer = false; unsigned int nLowest = UINT_MAX; - for (int i = 0; i < vin.size(); i++) + for (unsigned int i = 0; i < vin.size(); i++) { if (vin[i].nSequence != old.vin[i].nSequence) { @@ -492,6 +501,15 @@ public: return n; } + /** Count ECDSA signature operations in pay-to-script-hash inputs. + This is a better measure of how expensive it is to process this transaction. + + @param[in] mapInputsMap of previous transactions that have outputs we're spending + @return maximum number of sigops required to validate this transaction's inputs + @see CTransaction::FetchInputs + */ + int GetP2SHSigOpCount(const MapPrevTx& mapInputs) const; + bool IsStandard() const { BOOST_FOREACH(const CTxIn& txin, vin) @@ -515,6 +533,16 @@ public: return nValueOut; } + /** Amount of bitcoins coming in to this transaction + Note that lightweight clients may not know anything besides the hash of previous transactions, + so may not be able to calculate this. + + @param[in] mapInputsMap of previous transactions that have outputs we're spending + @returnSum of value of all inputs (scriptSigs) + @see CTransaction::FetchInputs + */ + int64 GetValueIn(const MapPrevTx& mapInputs) const; + static bool AllowFree(double dPriority) { // Large (in bytes) low-priority (new, small-coin) transactions @@ -550,9 +578,11 @@ public: // To limit dust spam, require MIN_TX_FEE/MIN_RELAY_TX_FEE if any output is less than 0.01 if (nMinFee < nBaseFee) + { BOOST_FOREACH(const CTxOut& txout, vout) if (txout.nValue < CENT) nMinFee = nBaseFee; + } // Raise the price as the block approaches full if (nBlockSize != 1 && nNewBlockSize >= MAX_BLOCK_SIZE_GEN/2) @@ -577,7 +607,13 @@ public: // Read transaction if (fseek(filein, pos.nTxPos, SEEK_SET) != 0) return error("CTransaction::ReadFromDisk() : fseek failed"); - filein >> *this; + + try { + filein >> *this; + } + catch (std::exception &e) { + return error("%s() : deserialize or I/O error", __PRETTY_FUNCTION__); + } // Return file pointer if (pfileRet) @@ -612,9 +648,9 @@ public: vin.size(), vout.size(), nLockTime); - for (int i = 0; i < vin.size(); i++) + for (unsigned int i = 0; i < vin.size(); i++) str += " " + vin[i].ToString() + "\n"; - for (int i = 0; i < vout.size(); i++) + for (unsigned int i = 0; i < vout.size(); i++) str += " " + vout[i].ToString() + "\n"; return str; } @@ -629,13 +665,41 @@ public: bool ReadFromDisk(CTxDB& txdb, COutPoint prevout); bool ReadFromDisk(COutPoint prevout); bool DisconnectInputs(CTxDB& txdb); - bool ConnectInputs(CTxDB& txdb, std::map& mapTestPool, CDiskTxPos posThisTx, - CBlockIndex* pindexBlock, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee=0); + + /** Fetch from memory and/or disk. inputsRet keys are transaction hashes. + + @param[in] txdb Transaction database + @param[in] mapTestPool List of pending changes to the transaction index database + @param[in] fBlock True if being called to add a new best-block to the chain + @param[in] fMiner True if being called by CreateNewBlock + @param[out] inputsRet Pointers to this transaction's inputs + @param[out] fInvalid returns true if transaction is invalid + @return Returns true if all inputs are in txdb or mapTestPool + */ + bool FetchInputs(CTxDB& txdb, const std::map& mapTestPool, + bool fBlock, bool fMiner, MapPrevTx& inputsRet, bool& fInvalid); + + /** Sanity check previous transactions, then, if all checks succeed, + mark them as spent by this transaction. + + @param[in] inputsPrevious transactions (from FetchInputs) + @param[out] mapTestPoolKeeps track of inputs that need to be updated on disk + @param[in] posThisTxPosition of this transaction on disk + @param[in] pindexBlock + @param[in] fBlock true if called from ConnectBlock + @param[in] fMiner true if called from CreateNewBlock + @param[in] fStrictPayToScriptHash true if fully validating p2sh transactions + @return Returns true if all checks succeed + */ + bool ConnectInputs(MapPrevTx inputs, + std::map& mapTestPool, const CDiskTxPos& posThisTx, + const CBlockIndex* pindexBlock, bool fBlock, bool fMiner, bool fStrictPayToScriptHash=true); bool ClientConnectInputs(); bool CheckTransaction() const; bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true, bool* pfMissingInputs=NULL); bool AcceptToMemoryPool(bool fCheckInputs=true, bool* pfMissingInputs=NULL); protected: + const CTxOut& GetOutputFor(const CTxIn& input, const MapPrevTx& inputs) const; bool AddToMemoryPoolUnchecked(); public: bool RemoveFromMemoryPool(); @@ -785,6 +849,9 @@ public: // memory only mutable std::vector vMerkleTree; + // Denial-of-service detection: + mutable int nDoS; + bool DoS(int nDoSIn, bool fIn) const { nDoS += nDoSIn; return fIn; } CBlock() { @@ -818,6 +885,7 @@ public: nNonce = 0; vtx.clear(); vMerkleTree.clear(); + nDoS = 0; } bool IsNull() const @@ -843,6 +911,8 @@ public: return n; } + void UpdateTime(const CBlockIndex* pindexPrev); + uint256 BuildMerkleTree() const { @@ -907,16 +977,17 @@ public: fileout << FLATDATA(pchMessageStart) << nSize; // Write block - nBlockPosRet = ftell(fileout); - if (nBlockPosRet == -1) + long fileOutPos = ftell(fileout); + if (fileOutPos < 0) return error("CBlock::WriteToDisk() : ftell failed"); + nBlockPosRet = fileOutPos; fileout << *this; // Flush stdio buffers and commit to disk before returning fflush(fileout); if (!IsInitialBlockDownload() || (nBestHeight+1) % 500 == 0) { -#ifdef __WXMSW__ +#ifdef WIN32 _commit(_fileno(fileout)); #else fsync(fileno(fileout)); @@ -938,7 +1009,12 @@ public: filein.nType |= SER_BLOCKHEADERONLY; // Read block - filein >> *this; + try { + filein >> *this; + } + catch (std::exception &e) { + return error("%s() : deserialize or I/O error", __PRETTY_FUNCTION__); + } // Check the header if (!CheckProofOfWork(GetHash(), nBits)) @@ -958,13 +1034,13 @@ public: hashMerkleRoot.ToString().substr(0,10).c_str(), nTime, nBits, nNonce, vtx.size()); - for (int i = 0; i < vtx.size(); i++) + for (unsigned int i = 0; i < vtx.size(); i++) { printf(" "); vtx[i].print(); } printf(" vMerkleTree: "); - for (int i = 0; i < vMerkleTree.size(); i++) + for (unsigned int i = 0; i < vMerkleTree.size(); i++) printf("%s ", vMerkleTree[i].ToString().substr(0,10).c_str()); printf("\n"); } @@ -1555,18 +1631,4 @@ public: bool ProcessAlert(); }; - - - - - - - - - - -extern std::map mapTransactions; -extern std::map > mapPubKeys; -extern CCriticalSection cs_mapPubKeys; - #endif