X-Git-Url: https://git.novaco.in/?p=novacoin.git;a=blobdiff_plain;f=src%2Fmain.cpp;h=68190ad82c701793a802307947557ecac20caf79;hp=19d67a9ce17e64a69c0df99d51276d7bbfb02e5a;hb=f6123ec5244fa565ebeba660de94a47b28ef0105;hpb=3fca9acedf650c25da89ed500fe52c13505d65e6 diff --git a/src/main.cpp b/src/main.cpp index 19d67a9..68190ad 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -6,15 +6,17 @@ #include "alert.h" #include "checkpoints.h" #include "db.h" +#include "txdb.h" #include "net.h" #include "init.h" #include "ui_interface.h" #include "kernel.h" -#include "scrypt_mine.h" +#include "zerocoin/Zerocoin.h" #include #include #include + using namespace std; using namespace boost; @@ -32,6 +34,7 @@ unsigned int nTransactionsUpdated = 0; map mapBlockIndex; set > setStakeSeen; +libzerocoin::Params* ZCParams; CBigNum bnProofOfWorkLimit(~uint256(0) >> 20); // "standard" scrypt target limit for proof of work, results with 0,000244140625 proof-of-work difficulty CBigNum bnProofOfStakeLegacyLimit(~uint256(0) >> 24); // proof of stake target limit from block #15000 and until 20 June 2013, results with 0,00390625 proof of stake difficulty @@ -64,20 +67,18 @@ multimap mapOrphanBlocksByPrev; set > setStakeSeenOrphan; map mapProofOfStake; -map mapOrphanTransactions; -map > mapOrphanTransactionsByPrev; +map mapOrphanTransactions; +map > mapOrphanTransactionsByPrev; // Constant stuff for coinbase transactions we create: CScript COINBASE_FLAGS; const string strMessageMagic = "NovaCoin Signed Message:\n"; -double dHashesPerSec; -int64 nHPSTimerStart; - // Settings int64 nTransactionFee = MIN_TX_FEE; - +bool fStakeUsePooledKeys = false; +extern enum Checkpoints::CPMode CheckpointsMode; ////////////////////////////////////////////////////////////////////////////// // @@ -193,16 +194,12 @@ void ResendWalletTransactions() // mapOrphanTransactions // -bool AddOrphanTx(const CDataStream& vMsg) +bool AddOrphanTx(const CTransaction& tx) { - CTransaction tx; - CDataStream(vMsg) >> tx; uint256 hash = tx.GetHash(); if (mapOrphanTransactions.count(hash)) return false; - CDataStream* pvMsg = new CDataStream(vMsg); - // Ignore big transactions, to avoid a // send-big-orphans memory exhaustion attack. If a peer has a legitimate // large transaction with a missing parent then we assume @@ -210,16 +207,18 @@ bool AddOrphanTx(const CDataStream& vMsg) // have been mined or received. // 10,000 orphans, each of which is at most 5,000 bytes big is // at most 500 megabytes of orphans: - if (pvMsg->size() > 5000) + + size_t nSize = tx.GetSerializeSize(SER_NETWORK, CTransaction::CURRENT_VERSION); + + if (nSize > 5000) { - printf("ignoring large orphan tx (size: %"PRIszu", hash: %s)\n", pvMsg->size(), hash.ToString().substr(0,10).c_str()); - delete pvMsg; + printf("ignoring large orphan tx (size: %"PRIszu", hash: %s)\n", nSize, hash.ToString().substr(0,10).c_str()); return false; } - mapOrphanTransactions[hash] = pvMsg; + mapOrphanTransactions[hash] = tx; BOOST_FOREACH(const CTxIn& txin, tx.vin) - mapOrphanTransactionsByPrev[txin.prevout.hash].insert(make_pair(hash, pvMsg)); + mapOrphanTransactionsByPrev[txin.prevout.hash].insert(hash); printf("stored orphan tx %s (mapsz %"PRIszu")\n", hash.ToString().substr(0,10).c_str(), mapOrphanTransactions.size()); @@ -230,16 +229,13 @@ void static EraseOrphanTx(uint256 hash) { if (!mapOrphanTransactions.count(hash)) return; - const CDataStream* pvMsg = mapOrphanTransactions[hash]; - CTransaction tx; - CDataStream(*pvMsg) >> tx; + const CTransaction& tx = mapOrphanTransactions[hash]; BOOST_FOREACH(const CTxIn& txin, tx.vin) { mapOrphanTransactionsByPrev[txin.prevout.hash].erase(hash); if (mapOrphanTransactionsByPrev[txin.prevout.hash].empty()) mapOrphanTransactionsByPrev.erase(txin.prevout.hash); } - delete pvMsg; mapOrphanTransactions.erase(hash); } @@ -250,7 +246,7 @@ unsigned int LimitOrphanTxSize(unsigned int nMaxOrphans) { // Evict a random orphan: uint256 randomhash = GetRandHash(); - map::iterator it = mapOrphanTransactions.lower_bound(randomhash); + map::iterator it = mapOrphanTransactions.lower_bound(randomhash); if (it == mapOrphanTransactions.end()) it = mapOrphanTransactions.begin(); EraseOrphanTx(it->first); @@ -480,9 +476,7 @@ bool CTransaction::CheckTransaction() const return DoS(100, error("CTransaction::CheckTransaction() : txout empty for user transaction")); // NovaCoin: enforce minimum output amount for user transactions - // (and for all transactions until 20 Sep 2013) - if ((!IsCoinBase() || nTime < CHAINCHECKS_SWITCH_TIME) - && (!txout.IsEmpty()) && txout.nValue < MIN_TXOUT_AMOUNT) + if (!IsCoinBase() && !txout.IsEmpty() && txout.nValue < MIN_TXOUT_AMOUNT) return DoS(100, error("CTransaction::CheckTransaction() : txout.nValue below minimum")); if (txout.nValue > MAX_MONEY) @@ -998,7 +992,7 @@ int64 GetProofOfWorkReward(unsigned int nBits) // miner's coin stake reward based on nBits and coin age spent (coin-days) int64 GetProofOfStakeReward(int64 nCoinAge, unsigned int nBits, unsigned int nTime, bool bCoinYearOnly) { - int64 nRewardCoinYear, nSubsidy; + int64 nRewardCoinYear, nSubsidy, nSubsidyLimit = 10 * COIN; if(fTestNet || nTime > STAKE_SWITCH_TIME) { @@ -1032,8 +1026,8 @@ int64 GetProofOfStakeReward(int64 nCoinAge, unsigned int nBits, unsigned int nTi // Human readable form: nRewardCoinYear = 1 / (posdiff ^ 1/6) // - bnMidPart = bnMidValue * bnMidValue * bnMidValue * bnMidValue * bnMidValue * bnMidValue * bnTargetLimit; - bnRewardPart = bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnTarget; + bnMidPart = bnMidValue * bnMidValue * bnMidValue * bnMidValue * bnMidValue * bnMidValue; + bnRewardPart = bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit; } else { @@ -1045,11 +1039,11 @@ int64 GetProofOfStakeReward(int64 nCoinAge, unsigned int nBits, unsigned int nTi // Human readable form: nRewardCoinYear = 1 / (posdiff ^ 1/3) // - bnMidPart = bnMidValue * bnMidValue * bnMidValue * bnTargetLimit; - bnRewardPart = bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnTarget; + bnMidPart = bnMidValue * bnMidValue * bnMidValue; + bnRewardPart = bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit; } - if (bnMidPart > bnRewardPart) + if (bnMidPart * bnTargetLimit > bnRewardPart * bnTarget) bnUpperBound = bnMidValue; else bnLowerBound = bnMidValue; @@ -1067,11 +1061,18 @@ int64 GetProofOfStakeReward(int64 nCoinAge, unsigned int nBits, unsigned int nTi if(bCoinYearOnly) return nRewardCoinYear; - // Fix problem with proof-of-stake rewards calculation since 20 Sep 2013 - if(nTime < CHAINCHECKS_SWITCH_TIME) - nSubsidy = nCoinAge * 33 / (365 * 33 + 8) * nRewardCoinYear; - else - nSubsidy = nCoinAge * nRewardCoinYear * 33 / (365 * 33 + 8); + nSubsidy = nCoinAge * nRewardCoinYear * 33 / (365 * 33 + 8); + + // Set reasonable reward limit for large inputs since 20 Oct 2013 + // + // This will stimulate large holders to use smaller inputs, that's good for the network protection + if(fTestNet || STAKECURVE_SWITCH_TIME < nTime) + { + if (fDebug && GetBoolArg("-printcreation") && nSubsidyLimit < nSubsidy) + printf("GetProofOfStakeReward(): %s is greater than %s, coinstake reward will be truncated\n", FormatMoney(nSubsidy).c_str(), FormatMoney(nSubsidyLimit).c_str()); + + nSubsidy = min(nSubsidy, nSubsidyLimit); + } if (fDebug && GetBoolArg("-printcreation")) printf("GetProofOfStakeReward(): create=%s nCoinAge=%"PRI64d" nBits=%d\n", FormatMoney(nSubsidy).c_str(), nCoinAge, nBits); @@ -1093,13 +1094,10 @@ int64 inline GetTargetSpacingWorkMax(int nHeight, unsigned int nTime) } // -// minimum amount of work that could possibly be required nTime after -// minimum work required was nBase +// maximum nBits value could possible be required nTime after // -unsigned int ComputeMinWork(unsigned int nBase, int64 nTime) +unsigned int ComputeMaxBits(CBigNum bnTargetLimit, unsigned int nBase, int64 nTime) { - CBigNum bnTargetLimit = bnProofOfWorkLimit; - CBigNum bnResult; bnResult.SetCompact(nBase); bnResult *= 2; @@ -1114,6 +1112,25 @@ unsigned int ComputeMinWork(unsigned int nBase, int64 nTime) return bnResult.GetCompact(); } +// +// minimum amount of work that could possibly be required nTime after +// minimum proof-of-work required was nBase +// +unsigned int ComputeMinWork(unsigned int nBase, int64 nTime) +{ + return ComputeMaxBits(bnProofOfWorkLimit, nBase, nTime); +} + +// +// minimum amount of stake that could possibly be required nTime after +// minimum proof-of-stake required was nBase +// +unsigned int ComputeMinStake(unsigned int nBase, int64 nTime, unsigned int nBlockTime) +{ + return ComputeMaxBits(GetProofOfStakeLimit(0, nBlockTime), nBase, nTime); +} + + // ppcoin: find last block index up to pindex const CBlockIndex* GetLastBlockIndex(const CBlockIndex* pindex, bool fProofOfStake) { @@ -1469,9 +1486,12 @@ bool CTransaction::ConnectInputs(CTxDB& txdb, MapPrevTx inputs, uint64 nCoinAge; if (!GetCoinAge(txdb, nCoinAge)) return error("ConnectInputs() : %s unable to get coin age for coinstake", GetHash().ToString().substr(0,10).c_str()); + int64 nStakeReward = GetValueOut() - nValueIn; - if (nStakeReward > GetProofOfStakeReward(nCoinAge, pindexBlock->nBits, nTime) - GetMinFee() + MIN_TX_FEE) - return DoS(100, error("ConnectInputs() : %s stake reward exceeded", GetHash().ToString().substr(0,10).c_str())); + int64 nCalculatedStakeReward = GetProofOfStakeReward(nCoinAge, pindexBlock->nBits, nTime) - GetMinFee() + MIN_TX_FEE; + + if (nStakeReward > nCalculatedStakeReward) + return DoS(100, error("ConnectInputs() : coinstake pays too much(actual=%"PRI64d" vs calculated=%"PRI64d")", nStakeReward, nCalculatedStakeReward)); } else { @@ -1571,8 +1591,8 @@ bool CBlock::DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex) bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex, bool fJustCheck) { - // Check it again in case a previous version let a bad block in - if (!CheckBlock(!fJustCheck, !fJustCheck)) + // Check it again in case a previous version let a bad block in, but skip BlockSig checking + if (!CheckBlock(!fJustCheck, !fJustCheck, false)) return false; // Do not allow blocks that contain transactions which 'overwrite' older transactions, @@ -2028,7 +2048,7 @@ bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos) pindexNew->nChainTrust = (pindexNew->pprev ? pindexNew->pprev->nChainTrust : 0) + pindexNew->GetBlockTrust(); // ppcoin: compute stake entropy bit for stake modifier - if (!pindexNew->SetStakeEntropyBit(GetStakeEntropyBit(pindexNew->nHeight))) + if (!pindexNew->SetStakeEntropyBit(GetStakeEntropyBit(pindexNew->nTime))) return error("AddToBlockIndex() : SetStakeEntropyBit() failed"); // ppcoin: record proof-of-stake hash value @@ -2068,8 +2088,6 @@ bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos) if (!SetBestChain(txdb, pindexNew)) return false; - txdb.Close(); - if (pindexNew == pindexBest) { // Notify UI to display prev block's coinbase if it was ours @@ -2085,7 +2103,7 @@ bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos) -bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const +bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot, bool fCheckSig) const { // These are checks that are independent of context // that can be verified before saving an orphan block. @@ -2094,24 +2112,6 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const if (vtx.empty() || vtx.size() > MAX_BLOCK_SIZE || ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION) > MAX_BLOCK_SIZE) return DoS(100, error("CheckBlock() : size limits failed")); - // Special short-term limits to avoid 10,000 BDB lock limit: - if (GetBlockTime() < LOCKS_SWITCH_TIME) - { - // Rule is: #unique txids referenced <= 4,500 - // ... to prevent 10,000 BDB lock exhaustion on old clients - set setTxIn; - for (size_t i = 0; i < vtx.size(); i++) - { - setTxIn.insert(vtx[i].GetHash()); - if (i == 0) continue; // skip coinbase txin - BOOST_FOREACH(const CTxIn& txin, vtx[i].vin) - setTxIn.insert(txin.prevout.hash); - } - size_t nTxids = setTxIn.size(); - if (nTxids > 4500) - return error("CheckBlock() : maxlocks violation"); - } - // Check proof of work matches claimed amount if (fCheckPOW && IsProofOfWork() && !CheckProofOfWork(GetHash(), nBits)) return DoS(50, error("CheckBlock() : proof of work failed")); @@ -2133,9 +2133,9 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const if (IsProofOfStake()) { - // ppcoin: coinbase output should be empty if proof-of-stake block + // Coinbase output should be empty if proof-of-stake block if (vtx[0].vout.size() != 1 || !vtx[0].vout[0].IsEmpty()) - return error("CheckBlock() : coinbase output not empty for proof-of-stake block"); + return DoS(100, error("CheckBlock() : coinbase output not empty for proof-of-stake block")); // Second transaction must be coinstake, the rest must not be if (vtx.empty() || !vtx[1].IsCoinStake()) @@ -2147,17 +2147,34 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const // Check coinstake timestamp if (!CheckCoinStakeTimestamp(GetBlockTime(), (int64)vtx[1].nTime)) return DoS(50, error("CheckBlock() : coinstake timestamp violation nTimeBlock=%"PRI64d" nTimeTx=%u", GetBlockTime(), vtx[1].nTime)); + + // NovaCoin: check proof-of-stake block signature + if (fCheckSig && !CheckBlockSignature(true)) + return DoS(100, error("CheckBlock() : bad proof-of-stake block signature")); } else { - // Coinbase fee paid until 20 Sep 2013 - int64 nFee = GetBlockTime() < CHAINCHECKS_SWITCH_TIME ? vtx[0].GetMinFee() - MIN_TX_FEE : 0; - + int64 nReward = GetProofOfWorkReward(nBits); // Check coinbase reward - if (vtx[0].GetValueOut() > (GetProofOfWorkReward(nBits) - nFee)) - return DoS(50, error("CheckBlock() : coinbase reward exceeded %s > %s", - FormatMoney(vtx[0].GetValueOut()).c_str(), - FormatMoney(GetProofOfWorkReward(nBits) - nFee).c_str())); + if (vtx[0].GetValueOut() > nReward) + return DoS(50, error("CheckBlock() : coinbase reward exceeded (actual=%"PRI64d" vs calculated=%"PRI64d")", + vtx[0].GetValueOut(), + nReward)); + + // Should we check proof-of-work block signature or not? + // + // * Always skip on TestNet + // * Perform checking for the first 9689 blocks + // * Perform checking since last checkpoint until 20 Sep 2013 (will be removed after) + + if(!fTestNet && fCheckSig) + { + bool checkEntropySig = (GetBlockTime() < ENTROPY_SWITCH_TIME); + + // NovaCoin: check proof-of-work block signature + if (checkEntropySig && !CheckBlockSignature(false)) + return DoS(100, error("CheckBlock() : bad proof-of-work block signature")); + } } // Check transactions @@ -2193,12 +2210,6 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const if (fCheckMerkleRoot && hashMerkleRoot != BuildMerkleTree()) return DoS(100, error("CheckBlock() : hashMerkleRoot mismatch")); - // NovaCoin: check proof-of-stake block signature - if (IsProofOfStake() || (!fTestNet && GetBlockTime() < CHAINCHECKS_SWITCH_TIME)) - { - if (!CheckBlockSignature()) - return DoS(100, error("CheckBlock() : bad block signature")); - } return true; } @@ -2234,26 +2245,19 @@ bool CBlock::AcceptBlock() if (!Checkpoints::CheckHardened(nHeight, hash)) return DoS(100, error("AcceptBlock() : rejected by hardened checkpoint lock-in at %d", nHeight)); - // ppcoin: check that the block satisfies synchronized checkpoint - if (!Checkpoints::CheckSync(hash, pindexPrev)) - { - if(!GetBoolArg("-nosynccheckpoints", false)) - { - return error("AcceptBlock() : rejected by synchronized checkpoint"); - } - else - { - strMiscWarning = _("WARNING: syncronized checkpoint violation detected, but skipped!"); - } - } + bool cpSatisfies = Checkpoints::CheckSync(hash, pindexPrev); + + // Check that the block satisfies synchronized checkpoint + if (CheckpointsMode == Checkpoints::STRICT && !cpSatisfies) + return error("AcceptBlock() : rejected by synchronized checkpoint"); - // Reject block.nVersion < 3 blocks since 95% threshold on mainNet and always on testNet: - if (nVersion < 3 && ((!fTestNet && nHeight > 14060) || (fTestNet && nHeight > 0))) - return error("CheckBlock() : rejected nVersion < 3 block"); + if (CheckpointsMode == Checkpoints::ADVISORY && !cpSatisfies) + strMiscWarning = _("WARNING: syncronized checkpoint violation detected, but skipped!"); // Enforce rule that the coinbase starts with serialized block height CScript expect = CScript() << nHeight; - if (!std::equal(expect.begin(), expect.end(), vtx[0].vin[0].scriptSig.begin())) + if (vtx[0].vin[0].scriptSig.size() < expect.size() || + !std::equal(expect.begin(), expect.end(), vtx[0].vin[0].scriptSig.begin())) return DoS(100, error("AcceptBlock() : block height mismatch in coinbase")); // Write block to history file @@ -2290,7 +2294,7 @@ uint256 CBlockIndex::GetBlockTrust() const if (bnTarget <= 0) return 0; - /* Old protocol, will be removed later */ + /* Old protocol */ if (!fTestNet && GetBlockTime() < CHAINCHECKS_SWITCH_TIME) return (IsProofOfStake()? ((CBigNum(1)<<256) / (bnTarget+1)).getuint256() : 1); @@ -2400,8 +2404,8 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock) // ppcoin: verify hash target and signature of coinstake tx if (pblock->IsProofOfStake()) { - uint256 hashProofOfStake = 0; - if (!CheckProofOfStake(pblock->vtx[1], pblock->nBits, hashProofOfStake)) + uint256 hashProofOfStake = 0, targetProofOfStake = 0; + if (!CheckProofOfStake(pblock->vtx[1], pblock->nBits, hashProofOfStake, targetProofOfStake)) { printf("WARNING: ProcessBlock(): check proof-of-stake failed for block %s\n", hash.ToString().c_str()); return false; // do not error here as we expect this during initial block download @@ -2418,7 +2422,12 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock) CBigNum bnNewBlock; bnNewBlock.SetCompact(pblock->nBits); CBigNum bnRequired; - bnRequired.SetCompact(ComputeMinWork(GetLastBlockIndex(pcheckpoint, pblock->IsProofOfStake())->nBits, deltaTime)); + + if (pblock->IsProofOfStake()) + bnRequired.SetCompact(ComputeMinStake(GetLastBlockIndex(pcheckpoint, true)->nBits, deltaTime, pblock->nTime)); + else + bnRequired.SetCompact(ComputeMinWork(GetLastBlockIndex(pcheckpoint, false)->nBits, deltaTime)); + if (bnNewBlock > bnRequired) { if (pfrom) @@ -2553,7 +2562,7 @@ bool CBlock::SignBlock(const CKeyStore& keystore) } // ppcoin: check block signature -bool CBlock::CheckBlockSignature() const +bool CBlock::CheckBlockSignature(bool fProofOfStake) const { if (GetHash() == (!fTestNet ? hashGenesisBlock : hashGenesisBlockTestNet)) return vchBlockSig.empty(); @@ -2561,7 +2570,7 @@ bool CBlock::CheckBlockSignature() const vector vSolutions; txnouttype whichType; - if(IsProofOfStake()) + if(fProofOfStake) { const CTxOut& txout = vtx[1].vout[1]; @@ -2653,7 +2662,7 @@ static unsigned int nCurrentBlockFile = 1; FILE* AppendBlockFile(unsigned int& nFileRet) { nFileRet = 0; - loop + while (true) { FILE* file = OpenBlockFile(nCurrentBlockFile, 0, "ab"); if (!file) @@ -2673,6 +2682,8 @@ FILE* AppendBlockFile(unsigned int& nFileRet) bool LoadBlockIndex(bool fAllowNew) { + CBigNum bnTrustedModulus; + if (fTestNet) { pchMessageStart[0] = 0xcd; @@ -2680,12 +2691,20 @@ bool LoadBlockIndex(bool fAllowNew) pchMessageStart[2] = 0xc0; pchMessageStart[3] = 0xef; + bnTrustedModulus.SetHex("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"); bnProofOfWorkLimit = bnProofOfWorkLimitTestNet; // 16 bits PoW target limit for testnet nStakeMinAge = 2 * 60 * 60; // test net min age is 2 hours nModifierInterval = 20 * 60; // test modifier interval is 20 minutes nCoinbaseMaturity = 10; // test maturity is 10 blocks nStakeTargetSpacing = 5 * 60; // test block spacing is 5 minutes } + else + { + bnTrustedModulus.SetHex("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"); + } + + // Set up the Zerocoin Params object + ZCParams = new libzerocoin::Params(bnTrustedModulus); // // Load block index @@ -2771,7 +2790,10 @@ bool LoadBlockIndex(bool fAllowNew) if ((!fTestNet) && !Checkpoints::ResetSyncCheckpoint()) return error("LoadBlockIndex() : failed to reset sync-checkpoint"); } +#ifndef USE_LEVELDB txdb.Close(); +#endif + } return true; @@ -2913,14 +2935,6 @@ bool LoadExternalBlockFile(FILE* fileIn) return nLoaded > 0; } - - - - - - - - ////////////////////////////////////////////////////////////////////////////// // // CAlert @@ -2929,8 +2943,8 @@ bool LoadExternalBlockFile(FILE* fileIn) extern map mapAlerts; extern CCriticalSection cs_mapAlerts; -static string strMintMessage = "Info: Minting suspended due to locked wallet."; -static string strMintWarning; +extern string strMintMessage; +extern string strMintWarning; string GetWarnings(string strFor) { @@ -2955,19 +2969,21 @@ string GetWarnings(string strFor) strStatusBar = strMiscWarning; } - // ppcoin: should not enter safe mode for longer invalid chain - // ppcoin: if sync-checkpoint is too old do not enter safe mode - if (Checkpoints::IsSyncCheckpointTooOld(60 * 60 * 24 * 10) && !fTestNet && !IsInitialBlockDownload()) + // * Should not enter safe mode for longer invalid chain + // * If sync-checkpoint is too old do not enter safe mode + // * Display warning only in the STRICT mode + if (CheckpointsMode == Checkpoints::STRICT && Checkpoints::IsSyncCheckpointTooOld(60 * 60 * 24 * 10) && + !fTestNet && !IsInitialBlockDownload()) { nPriority = 100; - strStatusBar = "WARNING: Checkpoint is too old. Wait for block chain to download, or notify developers."; + strStatusBar = _("WARNING: Checkpoint is too old. Wait for block chain to download, or notify developers."); } // ppcoin: if detected invalid checkpoint enter safe mode if (Checkpoints::hashInvalidCheckpoint != 0) { nPriority = 3000; - strStatusBar = strRPC = "WARNING: Invalid checkpoint found! Displayed transactions may not be correct! You may need to upgrade, or notify developers."; + strStatusBar = strRPC = _("WARNING: Invalid checkpoint found! Displayed transactions may not be correct! You may need to upgrade, or notify developers."); } // Alerts @@ -2981,7 +2997,7 @@ string GetWarnings(string strFor) nPriority = alert.nPriority; strStatusBar = alert.strStatusBar; if (nPriority > 1000) - strRPC = strStatusBar; // ppcoin: safe mode for high alert + strRPC = strStatusBar; } } } @@ -3051,10 +3067,6 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) return true; } - - - - if (strCommand == "version") { // Each connection can only send one version message @@ -3101,7 +3113,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) return true; } - // ppcoin: record my external IP reported by peer + // record my external IP reported by peer if (addrFrom.IsRoutable() && addrMe.IsRoutable()) addrSeenByPeer = addrMe; @@ -3161,7 +3173,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) item.second.RelayTo(pfrom); } - // ppcoin: relay sync-checkpoint + // Relay sync-checkpoint { LOCK(Checkpoints::cs_hashSyncCheckpoint); if (!Checkpoints::checkpointMessage.IsNull()) @@ -3260,7 +3272,6 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) pfrom->fDisconnect = true; } - else if (strCommand == "inv") { vector vInv; @@ -3483,17 +3494,11 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) CInv inv(MSG_TX, tx.GetHash()); pfrom->AddInventoryKnown(inv); - // Truncate messages to the size of the tx in them - unsigned int nSize = ::GetSerializeSize(tx,SER_NETWORK, PROTOCOL_VERSION); - if (nSize < vMsg.size()){ - vMsg.resize(nSize); - } - bool fMissingInputs = false; if (tx.AcceptToMemoryPool(txdb, true, &fMissingInputs)) { SyncWithWallets(tx, NULL, true); - RelayMessage(inv, vMsg); + RelayTransaction(tx, inv.hash); mapAlreadyAskedFor.erase(inv); vWorkQueue.push_back(inv.hash); vEraseQueue.push_back(inv.hash); @@ -3502,30 +3507,28 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) for (unsigned int i = 0; i < vWorkQueue.size(); i++) { uint256 hashPrev = vWorkQueue[i]; - for (map::iterator mi = mapOrphanTransactionsByPrev[hashPrev].begin(); + for (set::iterator mi = mapOrphanTransactionsByPrev[hashPrev].begin(); mi != mapOrphanTransactionsByPrev[hashPrev].end(); ++mi) { - const CDataStream& vMsg = *((*mi).second); - CTransaction tx; - CDataStream(vMsg) >> tx; - CInv inv(MSG_TX, tx.GetHash()); + const uint256& orphanTxHash = *mi; + CTransaction& orphanTx = mapOrphanTransactions[orphanTxHash]; bool fMissingInputs2 = false; - if (tx.AcceptToMemoryPool(txdb, true, &fMissingInputs2)) + if (orphanTx.AcceptToMemoryPool(txdb, true, &fMissingInputs2)) { - printf(" accepted orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str()); + printf(" accepted orphan tx %s\n", orphanTxHash.ToString().substr(0,10).c_str()); SyncWithWallets(tx, NULL, true); - RelayMessage(inv, vMsg); - mapAlreadyAskedFor.erase(inv); - vWorkQueue.push_back(inv.hash); - vEraseQueue.push_back(inv.hash); + RelayTransaction(orphanTx, orphanTxHash); + mapAlreadyAskedFor.erase(CInv(MSG_TX, orphanTxHash)); + vWorkQueue.push_back(orphanTxHash); + vEraseQueue.push_back(orphanTxHash); } else if (!fMissingInputs2) { // invalid orphan - vEraseQueue.push_back(inv.hash); - printf(" removed invalid orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str()); + vEraseQueue.push_back(orphanTxHash); + printf(" removed invalid orphan tx %s\n", orphanTxHash.ToString().substr(0,10).c_str()); } } } @@ -3535,7 +3538,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) } else if (fMissingInputs) { - AddOrphanTx(vMsg); + AddOrphanTx(tx); // DoS prevention: do not allow mapOrphanTransactions to grow unbounded unsigned int nEvicted = LimitOrphanTxSize(MAX_ORPHAN_TRANSACTIONS); @@ -3550,11 +3553,12 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) { CBlock block; vRecv >> block; + uint256 hashBlock = block.GetHash(); - printf("received block %s\n", block.GetHash().ToString().substr(0,20).c_str()); + printf("received block %s\n", hashBlock.ToString().substr(0,20).c_str()); // block.print(); - CInv inv(MSG_BLOCK, block.GetHash()); + CInv inv(MSG_BLOCK, hashBlock); pfrom->AddInventoryKnown(inv); if (ProcessBlock(pfrom, &block)) @@ -3565,10 +3569,13 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) else if (strCommand == "getaddr") { + // Don't return addresses older than nCutOff timestamp + int64 nCutOff = GetTime() - (nNodeLifespan * 24 * 60 * 60); pfrom->vAddrToSend.clear(); vector vAddr = addrman.GetAddr(); BOOST_FOREACH(const CAddress &addr, vAddr) - pfrom->PushAddress(addr); + if(addr.nTime > nCutOff) + pfrom->PushAddress(addr); } @@ -3720,7 +3727,7 @@ bool ProcessMessages(CNode* pfrom) // (x) data // - loop + while (true) { // Don't bother if send buffer is too full to respond anyway if (pfrom->vSend.size() >= SendBufferSize()) @@ -3984,562 +3991,3 @@ bool SendMessages(CNode* pto, bool fSendTrickle) } return true; } - - - - - - - - - - - - - - -////////////////////////////////////////////////////////////////////////////// -// -// BitcoinMiner -// - -int static FormatHashBlocks(void* pbuffer, unsigned int len) -{ - unsigned char* pdata = (unsigned char*)pbuffer; - unsigned int blocks = 1 + ((len + 8) / 64); - unsigned char* pend = pdata + 64 * blocks; - memset(pdata + len, 0, 64 * blocks - len); - pdata[len] = 0x80; - unsigned int bits = len * 8; - pend[-1] = (bits >> 0) & 0xff; - pend[-2] = (bits >> 8) & 0xff; - pend[-3] = (bits >> 16) & 0xff; - pend[-4] = (bits >> 24) & 0xff; - return blocks; -} - -static const unsigned int pSHA256InitState[8] = -{0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19}; - -void SHA256Transform(void* pstate, void* pinput, const void* pinit) -{ - SHA256_CTX ctx; - unsigned char data[64]; - - SHA256_Init(&ctx); - - for (int i = 0; i < 16; i++) - ((uint32_t*)data)[i] = ByteReverse(((uint32_t*)pinput)[i]); - - for (int i = 0; i < 8; i++) - ctx.h[i] = ((uint32_t*)pinit)[i]; - - SHA256_Update(&ctx, data, sizeof(data)); - for (int i = 0; i < 8; i++) - ((uint32_t*)pstate)[i] = ctx.h[i]; -} - -// Some explaining would be appreciated -class COrphan -{ -public: - CTransaction* ptx; - set setDependsOn; - double dPriority; - double dFeePerKb; - - COrphan(CTransaction* ptxIn) - { - ptx = ptxIn; - dPriority = dFeePerKb = 0; - } - - void print() const - { - printf("COrphan(hash=%s, dPriority=%.1f, dFeePerKb=%.1f)\n", - ptx->GetHash().ToString().substr(0,10).c_str(), dPriority, dFeePerKb); - BOOST_FOREACH(uint256 hash, setDependsOn) - printf(" setDependsOn %s\n", hash.ToString().substr(0,10).c_str()); - } -}; - - -uint64 nLastBlockTx = 0; -uint64 nLastBlockSize = 0; -int64 nLastCoinStakeSearchInterval = 0; - -// We want to sort transactions by priority and fee, so: -typedef boost::tuple TxPriority; -class TxPriorityCompare -{ - bool byFee; -public: - TxPriorityCompare(bool _byFee) : byFee(_byFee) { } - bool operator()(const TxPriority& a, const TxPriority& b) - { - if (byFee) - { - if (a.get<1>() == b.get<1>()) - return a.get<0>() < b.get<0>(); - return a.get<1>() < b.get<1>(); - } - else - { - if (a.get<0>() == b.get<0>()) - return a.get<1>() < b.get<1>(); - return a.get<0>() < b.get<0>(); - } - } -}; - -// CreateNewBlock: -// fProofOfStake: try (best effort) to make a proof-of-stake block -CBlock* CreateNewBlock(CWallet* pwallet, bool fProofOfStake) -{ - CReserveKey reservekey(pwallet); - - // Create new block - auto_ptr pblock(new CBlock()); - if (!pblock.get()) - return NULL; - - // Create coinbase tx - CTransaction txNew; - txNew.vin.resize(1); - txNew.vin[0].prevout.SetNull(); - txNew.vout.resize(1); - txNew.vout[0].scriptPubKey << reservekey.GetReservedKey() << OP_CHECKSIG; - - // Add our coinbase tx as first transaction - pblock->vtx.push_back(txNew); - - // Largest block you're willing to create: - unsigned int nBlockMaxSize = GetArg("-blockmaxsize", MAX_BLOCK_SIZE_GEN/2); - // Limit to betweeen 1K and MAX_BLOCK_SIZE-1K for sanity: - nBlockMaxSize = std::max((unsigned int)1000, std::min((unsigned int)(MAX_BLOCK_SIZE-1000), nBlockMaxSize)); - - // Special compatibility rule before 20 Aug: limit size to 500,000 bytes: - if (GetAdjustedTime() < LOCKS_SWITCH_TIME) - nBlockMaxSize = std::min(nBlockMaxSize, (unsigned int)(MAX_BLOCK_SIZE_GEN)); - - // How much of the block should be dedicated to high-priority transactions, - // included regardless of the fees they pay - unsigned int nBlockPrioritySize = GetArg("-blockprioritysize", 27000); - nBlockPrioritySize = std::min(nBlockMaxSize, nBlockPrioritySize); - - // Minimum block size you want to create; block will be filled with free transactions - // until there are no more or the block reaches this size: - unsigned int nBlockMinSize = GetArg("-blockminsize", 0); - nBlockMinSize = std::min(nBlockMaxSize, nBlockMinSize); - - // Fee-per-kilobyte amount considered the same as "free" - // Be careful setting this: if you set it to zero then - // a transaction spammer can cheaply fill blocks using - // 1-satoshi-fee transactions. It should be set above the real - // cost to you of processing a transaction. - int64 nMinTxFee = MIN_TX_FEE; - if (mapArgs.count("-mintxfee")) - ParseMoney(mapArgs["-mintxfee"], nMinTxFee); - - // ppcoin: if coinstake available add coinstake tx - static int64 nLastCoinStakeSearchTime = GetAdjustedTime(); // only initialized at startup - CBlockIndex* pindexPrev = pindexBest; - - if (fProofOfStake) // attempt to find a coinstake - { - pblock->nBits = GetNextTargetRequired(pindexPrev, true); - CTransaction txCoinStake; - int64 nSearchTime = txCoinStake.nTime; // search to current time - if (nSearchTime > nLastCoinStakeSearchTime) - { - if (pwallet->CreateCoinStake(*pwallet, pblock->nBits, nSearchTime-nLastCoinStakeSearchTime, txCoinStake)) - { - if (txCoinStake.nTime >= max(pindexPrev->GetMedianTimePast()+1, pindexPrev->GetBlockTime() - nMaxClockDrift)) - { // make sure coinstake would meet timestamp protocol - // as it would be the same as the block timestamp - pblock->vtx[0].vout[0].SetEmpty(); - pblock->vtx[0].nTime = txCoinStake.nTime; - pblock->vtx.push_back(txCoinStake); - } - } - nLastCoinStakeSearchInterval = nSearchTime - nLastCoinStakeSearchTime; - nLastCoinStakeSearchTime = nSearchTime; - } - } - - pblock->nBits = GetNextTargetRequired(pindexPrev, pblock->IsProofOfStake()); - - // Collect memory pool transactions into the block - int64 nFees = 0; - { - LOCK2(cs_main, mempool.cs); - CBlockIndex* pindexPrev = pindexBest; - CTxDB txdb("r"); - - // Priority order to process transactions - list vOrphan; // list memory doesn't move - map > mapDependers; - - // This vector will be sorted into a priority queue: - vector vecPriority; - vecPriority.reserve(mempool.mapTx.size()); - for (map::iterator mi = mempool.mapTx.begin(); mi != mempool.mapTx.end(); ++mi) - { - CTransaction& tx = (*mi).second; - if (tx.IsCoinBase() || tx.IsCoinStake() || !tx.IsFinal()) - continue; - - COrphan* porphan = NULL; - double dPriority = 0; - int64 nTotalIn = 0; - bool fMissingInputs = false; - BOOST_FOREACH(const CTxIn& txin, tx.vin) - { - // Read prev transaction - CTransaction txPrev; - CTxIndex txindex; - if (!txPrev.ReadFromDisk(txdb, txin.prevout, txindex)) - { - // This should never happen; all transactions in the memory - // pool should connect to either transactions in the chain - // or other transactions in the memory pool. - if (!mempool.mapTx.count(txin.prevout.hash)) - { - printf("ERROR: mempool transaction missing input\n"); - if (fDebug) assert("mempool transaction missing input" == 0); - fMissingInputs = true; - if (porphan) - vOrphan.pop_back(); - break; - } - - // Has to wait for dependencies - if (!porphan) - { - // Use list for automatic deletion - vOrphan.push_back(COrphan(&tx)); - porphan = &vOrphan.back(); - } - mapDependers[txin.prevout.hash].push_back(porphan); - porphan->setDependsOn.insert(txin.prevout.hash); - nTotalIn += mempool.mapTx[txin.prevout.hash].vout[txin.prevout.n].nValue; - continue; - } - int64 nValueIn = txPrev.vout[txin.prevout.n].nValue; - nTotalIn += nValueIn; - - int nConf = txindex.GetDepthInMainChain(); - dPriority += (double)nValueIn * nConf; - } - if (fMissingInputs) continue; - - // Priority is sum(valuein * age) / txsize - unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); - dPriority /= nTxSize; - - // This is a more accurate fee-per-kilobyte than is used by the client code, because the - // client code rounds up the size to the nearest 1K. That's good, because it gives an - // incentive to create smaller transactions. - double dFeePerKb = double(nTotalIn-tx.GetValueOut()) / (double(nTxSize)/1000.0); - - if (porphan) - { - porphan->dPriority = dPriority; - porphan->dFeePerKb = dFeePerKb; - } - else - vecPriority.push_back(TxPriority(dPriority, dFeePerKb, &(*mi).second)); - } - - // Collect transactions into block - map mapTestPool; - uint64 nBlockSize = 1000; - uint64 nBlockTx = 0; - int nBlockSigOps = 100; - bool fSortedByFee = (nBlockPrioritySize <= 0); - - TxPriorityCompare comparer(fSortedByFee); - std::make_heap(vecPriority.begin(), vecPriority.end(), comparer); - - while (!vecPriority.empty()) - { - // Take highest priority transaction off the priority queue: - double dPriority = vecPriority.front().get<0>(); - double dFeePerKb = vecPriority.front().get<1>(); - CTransaction& tx = *(vecPriority.front().get<2>()); - - std::pop_heap(vecPriority.begin(), vecPriority.end(), comparer); - vecPriority.pop_back(); - - // Size limits - unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); - if (nBlockSize + nTxSize >= nBlockMaxSize) - continue; - - // Legacy limits on sigOps: - unsigned int nTxSigOps = tx.GetLegacySigOpCount(); - if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS) - continue; - - // Timestamp limit - if (tx.nTime > GetAdjustedTime() || (pblock->IsProofOfStake() && tx.nTime > pblock->vtx[1].nTime)) - continue; - - // ppcoin: simplify transaction fee - allow free = false - int64 nMinFee = tx.GetMinFee(nBlockSize, false, GMF_BLOCK); - - // Skip free transactions if we're past the minimum block size: - if (fSortedByFee && (dFeePerKb < nMinTxFee) && (nBlockSize + nTxSize >= nBlockMinSize)) - continue; - - // Prioritize by fee once past the priority size or we run out of high-priority - // transactions: - if (!fSortedByFee && - ((nBlockSize + nTxSize >= nBlockPrioritySize) || (dPriority < COIN * 144 / 250))) - { - fSortedByFee = true; - comparer = TxPriorityCompare(fSortedByFee); - std::make_heap(vecPriority.begin(), vecPriority.end(), comparer); - } - - // Connecting shouldn't fail due to dependency on other memory pool transactions - // because we're already processing them in order of dependency - map mapTestPoolTmp(mapTestPool); - MapPrevTx mapInputs; - bool fInvalid; - if (!tx.FetchInputs(txdb, mapTestPoolTmp, false, true, mapInputs, fInvalid)) - continue; - - int64 nTxFees = tx.GetValueIn(mapInputs)-tx.GetValueOut(); - if (nTxFees < nMinFee) - continue; - - nTxSigOps += tx.GetP2SHSigOpCount(mapInputs); - if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS) - continue; - - if (!tx.ConnectInputs(txdb, mapInputs, mapTestPoolTmp, CDiskTxPos(1,1,1), pindexPrev, false, true)) - continue; - mapTestPoolTmp[tx.GetHash()] = CTxIndex(CDiskTxPos(1,1,1), tx.vout.size()); - swap(mapTestPool, mapTestPoolTmp); - - // Added - pblock->vtx.push_back(tx); - nBlockSize += nTxSize; - ++nBlockTx; - nBlockSigOps += nTxSigOps; - nFees += nTxFees; - - if (fDebug && GetBoolArg("-printpriority")) - { - printf("priority %.1f feeperkb %.1f txid %s\n", - dPriority, dFeePerKb, tx.GetHash().ToString().c_str()); - } - - // Add transactions that depend on this one to the priority queue - uint256 hash = tx.GetHash(); - if (mapDependers.count(hash)) - { - BOOST_FOREACH(COrphan* porphan, mapDependers[hash]) - { - if (!porphan->setDependsOn.empty()) - { - porphan->setDependsOn.erase(hash); - if (porphan->setDependsOn.empty()) - { - vecPriority.push_back(TxPriority(porphan->dPriority, porphan->dFeePerKb, porphan->ptx)); - std::push_heap(vecPriority.begin(), vecPriority.end(), comparer); - } - } - } - } - } - - nLastBlockTx = nBlockTx; - nLastBlockSize = nBlockSize; - - if (fDebug && GetBoolArg("-printpriority")) - printf("CreateNewBlock(): total size %"PRI64u"\n", nBlockSize); - - if (pblock->IsProofOfWork()) - pblock->vtx[0].vout[0].nValue = GetProofOfWorkReward(pblock->nBits); - - // Fill in header - pblock->hashPrevBlock = pindexPrev->GetBlockHash(); - if (pblock->IsProofOfStake()) - pblock->nTime = pblock->vtx[1].nTime; //same as coinstake timestamp - pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, pblock->GetMaxTransactionTime()); - pblock->nTime = max(pblock->GetBlockTime(), pindexPrev->GetBlockTime() - nMaxClockDrift); - if (pblock->IsProofOfWork()) - pblock->UpdateTime(pindexPrev); - pblock->nNonce = 0; - } - - return pblock.release(); -} - - -void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce) -{ - // Update nExtraNonce - static uint256 hashPrevBlock; - if (hashPrevBlock != pblock->hashPrevBlock) - { - nExtraNonce = 0; - hashPrevBlock = pblock->hashPrevBlock; - } - ++nExtraNonce; - unsigned int nHeight = pindexPrev->nHeight+1; // Height first in coinbase required for block.version=2 - pblock->vtx[0].vin[0].scriptSig = (CScript() << nHeight << CBigNum(nExtraNonce)) + COINBASE_FLAGS; - assert(pblock->vtx[0].vin[0].scriptSig.size() <= 100); - - pblock->hashMerkleRoot = pblock->BuildMerkleTree(); -} - - -void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1) -{ - // - // Pre-build hash buffers - // - struct - { - struct unnamed2 - { - int nVersion; - uint256 hashPrevBlock; - uint256 hashMerkleRoot; - unsigned int nTime; - unsigned int nBits; - unsigned int nNonce; - } - block; - unsigned char pchPadding0[64]; - uint256 hash1; - unsigned char pchPadding1[64]; - } - tmp; - memset(&tmp, 0, sizeof(tmp)); - - tmp.block.nVersion = pblock->nVersion; - tmp.block.hashPrevBlock = pblock->hashPrevBlock; - tmp.block.hashMerkleRoot = pblock->hashMerkleRoot; - tmp.block.nTime = pblock->nTime; - tmp.block.nBits = pblock->nBits; - tmp.block.nNonce = pblock->nNonce; - - FormatHashBlocks(&tmp.block, sizeof(tmp.block)); - FormatHashBlocks(&tmp.hash1, sizeof(tmp.hash1)); - - // Byte swap all the input buffer - for (unsigned int i = 0; i < sizeof(tmp)/4; i++) - ((unsigned int*)&tmp)[i] = ByteReverse(((unsigned int*)&tmp)[i]); - - // Precalc the first half of the first hash, which stays constant - SHA256Transform(pmidstate, &tmp.block, pSHA256InitState); - - memcpy(pdata, &tmp.block, 128); - memcpy(phash1, &tmp.hash1, 64); -} - - -bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey) -{ - uint256 hash = pblock->GetHash(); - uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256(); - - if (hash > hashTarget && pblock->IsProofOfWork()) - return error("BitcoinMiner : proof-of-work not meeting target"); - - //// debug print - printf("BitcoinMiner:\n"); - printf("new block found \n hash: %s \ntarget: %s\n", hash.GetHex().c_str(), hashTarget.GetHex().c_str()); - pblock->print(); - printf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue).c_str()); - - // Found a solution - { - LOCK(cs_main); - if (pblock->hashPrevBlock != hashBestChain) - return error("BitcoinMiner : generated block is stale"); - - // Remove key from key pool - reservekey.KeepKey(); - - // Track how many getdata requests this block gets - { - LOCK(wallet.cs_wallet); - wallet.mapRequestCount[pblock->GetHash()] = 0; - } - - // Process this block the same as if we had received it from another node - if (!ProcessBlock(NULL, pblock)) - return error("BitcoinMiner : ProcessBlock, block not accepted"); - } - - return true; -} - -void BitcoinMiner(CWallet *pwallet, bool fProofOfStake) -{ - SetThreadPriority(THREAD_PRIORITY_LOWEST); - - // Make this thread recognisable as the mining thread - RenameThread("bitcoin-miner"); - - // Each thread has its own key and counter - CReserveKey reservekey(pwallet); - unsigned int nExtraNonce = 0; - - while (fProofOfStake) - { - if (fShutdown) - return; - while (vNodes.empty() || IsInitialBlockDownload()) - { - Sleep(1000); - if (fShutdown) - return; - if (!fProofOfStake) - return; - } - - while (pwallet->IsLocked()) - { - strMintWarning = strMintMessage; - Sleep(1000); - } - strMintWarning = ""; - - // - // Create new block - // - CBlockIndex* pindexPrev = pindexBest; - - auto_ptr pblock(CreateNewBlock(pwallet, fProofOfStake)); - if (!pblock.get()) - return; - IncrementExtraNonce(pblock.get(), pindexPrev, nExtraNonce); - - if (fProofOfStake) - { - // ppcoin: if proof-of-stake block found then process block - if (pblock->IsProofOfStake()) - { - if (!pblock->SignBlock(*pwalletMain)) - { - strMintWarning = strMintMessage; - continue; - } - strMintWarning = ""; - printf("StakeMiner : proof-of-stake block found %s\n", pblock->GetHash().ToString().c_str()); - SetThreadPriority(THREAD_PRIORITY_NORMAL); - CheckWork(pblock.get(), *pwalletMain, reservekey); - SetThreadPriority(THREAD_PRIORITY_LOWEST); - } - Sleep(500); - continue; - } - } -} -