/src/main.cpp
C++ | 3112 lines | 2247 code | 518 blank | 347 comment | 631 complexity | 4e1b29ec025e8891647bb4485e5fb2cf MD5 | raw file
- // Copyright (c) 2009-2010 Satoshi Nakamoto
- // Distributed under the MIT/X11 software license, see the accompanying
- // file license.txt or http://www.opensource.org/licenses/mit-license.php.
- #include "headers.h"
- #include "db.h"
- #include "net.h"
- #include "init.h"
- #include "cryptopp/sha.h"
- #include <boost/filesystem.hpp>
- #include <boost/filesystem/fstream.hpp>
- using namespace std;
- using namespace boost;
- //
- // Global state
- //
- CCriticalSection cs_setpwalletRegistered;
- set<CWallet*> setpwalletRegistered;
- CCriticalSection cs_main;
- CCriticalSection cs_mapPubKeys;
- map<uint160, vector<unsigned char> > mapPubKeys;
- map<uint256, CTransaction> mapTransactions;
- CCriticalSection cs_mapTransactions;
- unsigned int nTransactionsUpdated = 0;
- map<COutPoint, CInPoint> mapNextTx;
- map<uint256, CBlockIndex*> mapBlockIndex;
- uint256 hashGenesisBlock("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f");
- CBigNum bnProofOfWorkLimit(~uint256(0) >> 32);
- const int nTotalBlocksEstimate = 134444; // Conservative estimate of total nr of blocks on main chain
- const int nInitialBlockThreshold = 120; // Regard blocks up until N-threshold as "initial download"
- CBlockIndex* pindexGenesisBlock = NULL;
- int nBestHeight = -1;
- CBigNum bnBestChainWork = 0;
- CBigNum bnBestInvalidWork = 0;
- uint256 hashBestChain = 0;
- CBlockIndex* pindexBest = NULL;
- int64 nTimeBestReceived = 0;
- map<uint256, CBlock*> mapOrphanBlocks;
- multimap<uint256, CBlock*> mapOrphanBlocksByPrev;
- map<uint256, CDataStream*> mapOrphanTransactions;
- multimap<uint256, CDataStream*> mapOrphanTransactionsByPrev;
- double dHashesPerSec;
- int64 nHPSTimerStart;
- // Settings
- int fGenerateBitcoins = false;
- int64 nTransactionFee = 0;
- CAddress addrIncoming;
- int fLimitProcessors = false;
- int nLimitProcessors = 1;
- int fMinimizeToTray = true;
- int fMinimizeOnClose = true;
- //////////////////////////////////////////////////////////////////////////////
- //
- // dispatching functions
- //
- void RegisterWallet(CWallet* pwalletIn)
- {
- CRITICAL_BLOCK(cs_setpwalletRegistered)
- {
- setpwalletRegistered.insert(pwalletIn);
- }
- }
- void UnregisterWallet(CWallet* pwalletIn)
- {
- CRITICAL_BLOCK(cs_setpwalletRegistered)
- {
- setpwalletRegistered.erase(pwalletIn);
- }
- }
- bool static IsFromMe(CTransaction& tx)
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- if (pwallet->IsFromMe(tx))
- return true;
- return false;
- }
- bool static GetTransaction(const uint256& hashTx, CWalletTx& wtx)
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- if (pwallet->GetTransaction(hashTx,wtx))
- return true;
- return false;
- }
- void static EraseFromWallets(uint256 hash)
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- pwallet->EraseFromWallet(hash);
- }
- void static SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL, bool fUpdate = false)
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- pwallet->AddToWalletIfInvolvingMe(tx, pblock, fUpdate);
- }
- void static SetBestChain(const CBlockLocator& loc)
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- pwallet->SetBestChain(loc);
- }
- void static UpdatedTransaction(const uint256& hashTx)
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- pwallet->UpdatedTransaction(hashTx);
- }
- void static PrintWallets(const CBlock& block)
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- pwallet->PrintWallet(block);
- }
- void static Inventory(const uint256& hash)
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- pwallet->Inventory(hash);
- }
- void static ResendWalletTransactions()
- {
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- pwallet->ResendWalletTransactions();
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // mapOrphanTransactions
- //
- void static AddOrphanTx(const CDataStream& vMsg)
- {
- CTransaction tx;
- CDataStream(vMsg) >> tx;
- uint256 hash = tx.GetHash();
- if (mapOrphanTransactions.count(hash))
- return;
- CDataStream* pvMsg = mapOrphanTransactions[hash] = new CDataStream(vMsg);
- BOOST_FOREACH(const CTxIn& txin, tx.vin)
- mapOrphanTransactionsByPrev.insert(make_pair(txin.prevout.hash, pvMsg));
- }
- void static EraseOrphanTx(uint256 hash)
- {
- if (!mapOrphanTransactions.count(hash))
- return;
- const CDataStream* pvMsg = mapOrphanTransactions[hash];
- CTransaction tx;
- CDataStream(*pvMsg) >> tx;
- BOOST_FOREACH(const CTxIn& txin, tx.vin)
- {
- for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(txin.prevout.hash);
- mi != mapOrphanTransactionsByPrev.upper_bound(txin.prevout.hash);)
- {
- if ((*mi).second == pvMsg)
- mapOrphanTransactionsByPrev.erase(mi++);
- else
- mi++;
- }
- }
- delete pvMsg;
- mapOrphanTransactions.erase(hash);
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // CTransaction and CTxIndex
- //
- bool CTransaction::ReadFromDisk(CTxDB& txdb, COutPoint prevout, CTxIndex& txindexRet)
- {
- SetNull();
- if (!txdb.ReadTxIndex(prevout.hash, txindexRet))
- return false;
- if (!ReadFromDisk(txindexRet.pos))
- return false;
- if (prevout.n >= vout.size())
- {
- SetNull();
- return false;
- }
- return true;
- }
- bool CTransaction::ReadFromDisk(CTxDB& txdb, COutPoint prevout)
- {
- CTxIndex txindex;
- return ReadFromDisk(txdb, prevout, txindex);
- }
- bool CTransaction::ReadFromDisk(COutPoint prevout)
- {
- CTxDB txdb("r");
- CTxIndex txindex;
- return ReadFromDisk(txdb, prevout, txindex);
- }
- int CMerkleTx::SetMerkleBranch(const CBlock* pblock)
- {
- if (fClient)
- {
- if (hashBlock == 0)
- return 0;
- }
- else
- {
- CBlock blockTmp;
- if (pblock == NULL)
- {
- // Load the block this tx is in
- CTxIndex txindex;
- if (!CTxDB("r").ReadTxIndex(GetHash(), txindex))
- return 0;
- if (!blockTmp.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos))
- return 0;
- pblock = &blockTmp;
- }
- // Update the tx's hashBlock
- hashBlock = pblock->GetHash();
- // Locate the transaction
- for (nIndex = 0; nIndex < pblock->vtx.size(); nIndex++)
- if (pblock->vtx[nIndex] == *(CTransaction*)this)
- break;
- if (nIndex == pblock->vtx.size())
- {
- vMerkleBranch.clear();
- nIndex = -1;
- printf("ERROR: SetMerkleBranch() : couldn't find tx in block\n");
- return 0;
- }
- // Fill in merkle branch
- vMerkleBranch = pblock->GetMerkleBranch(nIndex);
- }
- // Is the tx in a block that's in the main chain
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
- if (mi == mapBlockIndex.end())
- return 0;
- CBlockIndex* pindex = (*mi).second;
- if (!pindex || !pindex->IsInMainChain())
- return 0;
- return pindexBest->nHeight - pindex->nHeight + 1;
- }
- bool CTransaction::CheckTransaction() const
- {
- // Basic checks that don't depend on any context
- if (vin.empty() || vout.empty())
- return error("CTransaction::CheckTransaction() : vin or vout empty");
- // Size limits
- if (::GetSerializeSize(*this, SER_NETWORK) > MAX_BLOCK_SIZE)
- return error("CTransaction::CheckTransaction() : size limits failed");
- // Check for negative or overflow output values
- int64 nValueOut = 0;
- BOOST_FOREACH(const CTxOut& txout, vout)
- {
- if (txout.nValue < 0)
- return error("CTransaction::CheckTransaction() : txout.nValue negative");
- if (txout.nValue > MAX_MONEY)
- return error("CTransaction::CheckTransaction() : txout.nValue too high");
- nValueOut += txout.nValue;
- if (!MoneyRange(nValueOut))
- return error("CTransaction::CheckTransaction() : txout total out of range");
- }
- if (IsCoinBase())
- {
- if (vin[0].scriptSig.size() < 2 || vin[0].scriptSig.size() > 100)
- return error("CTransaction::CheckTransaction() : coinbase script size");
- }
- else
- {
- BOOST_FOREACH(const CTxIn& txin, vin)
- if (txin.prevout.IsNull())
- return error("CTransaction::CheckTransaction() : prevout is null");
- }
- return true;
- }
- bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMissingInputs)
- {
- if (pfMissingInputs)
- *pfMissingInputs = false;
- if (!CheckTransaction())
- return error("AcceptToMemoryPool() : CheckTransaction failed");
- // Coinbase is only valid in a block, not as a loose transaction
- if (IsCoinBase())
- return error("AcceptToMemoryPool() : coinbase as individual tx");
- // To help v0.1.5 clients who would see it as a negative number
- if ((int64)nLockTime > INT_MAX)
- return error("AcceptToMemoryPool() : not accepting nLockTime beyond 2038 yet");
- // Safety limits
- unsigned int nSize = ::GetSerializeSize(*this, SER_NETWORK);
- // Checking ECDSA signatures is a CPU bottleneck, so to avoid denial-of-service
- // attacks disallow transactions with more than one SigOp per 34 bytes.
- // 34 bytes because a TxOut is:
- // 20-byte address + 8 byte bitcoin amount + 5 bytes of ops + 1 byte script length
- if (GetSigOpCount() > nSize / 34 || nSize < 100)
- return error("AcceptToMemoryPool() : nonstandard transaction");
- // Rather not work on nonstandard transactions (unless -testnet)
- if (!fTestNet && !IsStandard())
- return error("AcceptToMemoryPool() : nonstandard transaction type");
- // Do we already have it?
- uint256 hash = GetHash();
- CRITICAL_BLOCK(cs_mapTransactions)
- if (mapTransactions.count(hash))
- return false;
- if (fCheckInputs)
- if (txdb.ContainsTx(hash))
- return false;
- // Check for conflicts with in-memory transactions
- CTransaction* ptxOld = NULL;
- for (int i = 0; i < vin.size(); i++)
- {
- COutPoint outpoint = vin[i].prevout;
- if (mapNextTx.count(outpoint))
- {
- // Disable replacement feature for now
- return false;
- // Allow replacing with a newer version of the same transaction
- if (i != 0)
- return false;
- ptxOld = mapNextTx[outpoint].ptx;
- if (ptxOld->IsFinal())
- return false;
- if (!IsNewerThan(*ptxOld))
- return false;
- for (int i = 0; i < vin.size(); i++)
- {
- COutPoint outpoint = vin[i].prevout;
- if (!mapNextTx.count(outpoint) || mapNextTx[outpoint].ptx != ptxOld)
- return false;
- }
- break;
- }
- }
- if (fCheckInputs)
- {
- // Check against previous transactions
- map<uint256, CTxIndex> mapUnused;
- int64 nFees = 0;
- if (!ConnectInputs(txdb, mapUnused, CDiskTxPos(1,1,1), pindexBest, nFees, false, false))
- {
- if (pfMissingInputs)
- *pfMissingInputs = true;
- return error("AcceptToMemoryPool() : ConnectInputs failed %s", hash.ToString().substr(0,10).c_str());
- }
- // Don't accept it if it can't get into a block
- if (nFees < GetMinFee(1000, true, true))
- return error("AcceptToMemoryPool() : not enough fees");
- // Continuously rate-limit free transactions
- // This mitigates 'penny-flooding' -- sending thousands of free transactions just to
- // be annoying or make other's transactions take longer to confirm.
- if (nFees < MIN_RELAY_TX_FEE)
- {
- static CCriticalSection cs;
- static double dFreeCount;
- static int64 nLastTime;
- int64 nNow = GetTime();
- CRITICAL_BLOCK(cs)
- {
- // Use an exponentially decaying ~10-minute window:
- dFreeCount *= pow(1.0 - 1.0/600.0, (double)(nNow - nLastTime));
- nLastTime = nNow;
- // -limitfreerelay unit is thousand-bytes-per-minute
- // At default rate it would take over a month to fill 1GB
- if (dFreeCount > GetArg("-limitfreerelay", 15)*10*1000 && !IsFromMe(*this))
- return error("AcceptToMemoryPool() : free transaction rejected by rate limiter");
- if (fDebug)
- printf("Rate limit dFreeCount: %g => %g\n", dFreeCount, dFreeCount+nSize);
- dFreeCount += nSize;
- }
- }
- }
- // Store transaction in memory
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- if (ptxOld)
- {
- printf("AcceptToMemoryPool() : replacing tx %s with new version\n", ptxOld->GetHash().ToString().c_str());
- ptxOld->RemoveFromMemoryPool();
- }
- AddToMemoryPoolUnchecked();
- }
- ///// are we sure this is ok when loading transactions or restoring block txes
- // If updated, erase old tx from wallet
- if (ptxOld)
- EraseFromWallets(ptxOld->GetHash());
- printf("AcceptToMemoryPool(): accepted %s\n", hash.ToString().substr(0,10).c_str());
- return true;
- }
- bool CTransaction::AcceptToMemoryPool(bool fCheckInputs, bool* pfMissingInputs)
- {
- CTxDB txdb("r");
- return AcceptToMemoryPool(txdb, fCheckInputs, pfMissingInputs);
- }
- bool CTransaction::AddToMemoryPoolUnchecked()
- {
- // Add to memory pool without checking anything. Don't call this directly,
- // call AcceptToMemoryPool to properly check the transaction first.
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- uint256 hash = GetHash();
- mapTransactions[hash] = *this;
- for (int i = 0; i < vin.size(); i++)
- mapNextTx[vin[i].prevout] = CInPoint(&mapTransactions[hash], i);
- nTransactionsUpdated++;
- }
- return true;
- }
- bool CTransaction::RemoveFromMemoryPool()
- {
- // Remove transaction from memory pool
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- BOOST_FOREACH(const CTxIn& txin, vin)
- mapNextTx.erase(txin.prevout);
- mapTransactions.erase(GetHash());
- nTransactionsUpdated++;
- }
- return true;
- }
- int CMerkleTx::GetDepthInMainChain(int& nHeightRet) const
- {
- if (hashBlock == 0 || nIndex == -1)
- return 0;
- // Find the block it claims to be in
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
- if (mi == mapBlockIndex.end())
- return 0;
- CBlockIndex* pindex = (*mi).second;
- if (!pindex || !pindex->IsInMainChain())
- return 0;
- // Make sure the merkle branch connects to this block
- if (!fMerkleVerified)
- {
- if (CBlock::CheckMerkleBranch(GetHash(), vMerkleBranch, nIndex) != pindex->hashMerkleRoot)
- return 0;
- fMerkleVerified = true;
- }
- nHeightRet = pindex->nHeight;
- return pindexBest->nHeight - pindex->nHeight + 1;
- }
- int CMerkleTx::GetBlocksToMaturity() const
- {
- if (!IsCoinBase())
- return 0;
- return max(0, (COINBASE_MATURITY+20) - GetDepthInMainChain());
- }
- bool CMerkleTx::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs)
- {
- if (fClient)
- {
- if (!IsInMainChain() && !ClientConnectInputs())
- return false;
- return CTransaction::AcceptToMemoryPool(txdb, false);
- }
- else
- {
- return CTransaction::AcceptToMemoryPool(txdb, fCheckInputs);
- }
- }
- bool CMerkleTx::AcceptToMemoryPool()
- {
- CTxDB txdb("r");
- return AcceptToMemoryPool(txdb);
- }
- bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)
- {
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- // Add previous supporting transactions first
- BOOST_FOREACH(CMerkleTx& tx, vtxPrev)
- {
- if (!tx.IsCoinBase())
- {
- uint256 hash = tx.GetHash();
- if (!mapTransactions.count(hash) && !txdb.ContainsTx(hash))
- tx.AcceptToMemoryPool(txdb, fCheckInputs);
- }
- }
- return AcceptToMemoryPool(txdb, fCheckInputs);
- }
- return false;
- }
- bool CWalletTx::AcceptWalletTransaction()
- {
- CTxDB txdb("r");
- return AcceptWalletTransaction(txdb);
- }
- int CTxIndex::GetDepthInMainChain() const
- {
- // Read block header
- CBlock block;
- if (!block.ReadFromDisk(pos.nFile, pos.nBlockPos, false))
- return 0;
- // Find the block in the index
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(block.GetHash());
- if (mi == mapBlockIndex.end())
- return 0;
- CBlockIndex* pindex = (*mi).second;
- if (!pindex || !pindex->IsInMainChain())
- return 0;
- return 1 + nBestHeight - pindex->nHeight;
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // CBlock and CBlockIndex
- //
- bool CBlock::ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions)
- {
- if (!fReadTransactions)
- {
- *this = pindex->GetBlockHeader();
- return true;
- }
- if (!ReadFromDisk(pindex->nFile, pindex->nBlockPos, fReadTransactions))
- return false;
- if (GetHash() != pindex->GetBlockHash())
- return error("CBlock::ReadFromDisk() : GetHash() doesn't match index");
- return true;
- }
- uint256 static GetOrphanRoot(const CBlock* pblock)
- {
- // Work back to the first block in the orphan chain
- while (mapOrphanBlocks.count(pblock->hashPrevBlock))
- pblock = mapOrphanBlocks[pblock->hashPrevBlock];
- return pblock->GetHash();
- }
- int64 static GetBlockValue(int nHeight, int64 nFees)
- {
- int64 nSubsidy = 50 * COIN;
- // Subsidy is cut in half every 4 years
- nSubsidy >>= (nHeight / 210000);
- return nSubsidy + nFees;
- }
- unsigned int static GetNextWorkRequired(const CBlockIndex* pindexLast)
- {
- const int64 nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
- const int64 nTargetSpacing = 10 * 60;
- const int64 nInterval = nTargetTimespan / nTargetSpacing;
- // Genesis block
- if (pindexLast == NULL)
- return bnProofOfWorkLimit.GetCompact();
- // Only change once per interval
- if ((pindexLast->nHeight+1) % nInterval != 0)
- return pindexLast->nBits;
- // Go back by what we want to be 14 days worth of blocks
- const CBlockIndex* pindexFirst = pindexLast;
- for (int i = 0; pindexFirst && i < nInterval-1; i++)
- pindexFirst = pindexFirst->pprev;
- assert(pindexFirst);
- // Limit adjustment step
- int64 nActualTimespan = pindexLast->GetBlockTime() - pindexFirst->GetBlockTime();
- printf(" nActualTimespan = %"PRI64d" before bounds\n", nActualTimespan);
- if (nActualTimespan < nTargetTimespan/4)
- nActualTimespan = nTargetTimespan/4;
- if (nActualTimespan > nTargetTimespan*4)
- nActualTimespan = nTargetTimespan*4;
- // Retarget
- CBigNum bnNew;
- bnNew.SetCompact(pindexLast->nBits);
- bnNew *= nActualTimespan;
- bnNew /= nTargetTimespan;
- if (bnNew > bnProofOfWorkLimit)
- bnNew = bnProofOfWorkLimit;
- /// debug print
- printf("GetNextWorkRequired RETARGET\n");
- printf("nTargetTimespan = %"PRI64d" nActualTimespan = %"PRI64d"\n", nTargetTimespan, nActualTimespan);
- printf("Before: %08x %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString().c_str());
- printf("After: %08x %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString().c_str());
- return bnNew.GetCompact();
- }
- bool CheckProofOfWork(uint256 hash, unsigned int nBits)
- {
- CBigNum bnTarget;
- bnTarget.SetCompact(nBits);
- // Check range
- if (bnTarget <= 0 || bnTarget > bnProofOfWorkLimit)
- return error("CheckProofOfWork() : nBits below minimum work");
- // Check proof of work matches claimed amount
- if (hash > bnTarget.getuint256())
- return error("CheckProofOfWork() : hash doesn't match nBits");
- return true;
- }
- // Return conservative estimate of total number of blocks, 0 if unknown
- int GetTotalBlocksEstimate()
- {
- if(fTestNet)
- {
- return 0;
- }
- else
- {
- return nTotalBlocksEstimate;
- }
- }
- bool IsInitialBlockDownload()
- {
- if (pindexBest == NULL || nBestHeight < (GetTotalBlocksEstimate()-nInitialBlockThreshold))
- return true;
- static int64 nLastUpdate;
- static CBlockIndex* pindexLastBest;
- if (pindexBest != pindexLastBest)
- {
- pindexLastBest = pindexBest;
- nLastUpdate = GetTime();
- }
- return (GetTime() - nLastUpdate < 10 &&
- pindexBest->GetBlockTime() < GetTime() - 24 * 60 * 60);
- }
- void static InvalidChainFound(CBlockIndex* pindexNew)
- {
- if (pindexNew->bnChainWork > bnBestInvalidWork)
- {
- bnBestInvalidWork = pindexNew->bnChainWork;
- CTxDB().WriteBestInvalidWork(bnBestInvalidWork);
- MainFrameRepaint();
- }
- printf("InvalidChainFound: invalid block=%s height=%d work=%s\n", pindexNew->GetBlockHash().ToString().substr(0,20).c_str(), pindexNew->nHeight, pindexNew->bnChainWork.ToString().c_str());
- printf("InvalidChainFound: current best=%s height=%d work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
- if (pindexBest && bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6)
- printf("InvalidChainFound: WARNING: Displayed transactions may not be correct! You may need to upgrade, or other nodes may need to upgrade.\n");
- }
- bool CTransaction::DisconnectInputs(CTxDB& txdb)
- {
- // Relinquish previous transactions' spent pointers
- if (!IsCoinBase())
- {
- BOOST_FOREACH(const CTxIn& txin, vin)
- {
- COutPoint prevout = txin.prevout;
- // Get prev txindex from disk
- CTxIndex txindex;
- if (!txdb.ReadTxIndex(prevout.hash, txindex))
- return error("DisconnectInputs() : ReadTxIndex failed");
- if (prevout.n >= txindex.vSpent.size())
- return error("DisconnectInputs() : prevout.n out of range");
- // Mark outpoint as not spent
- txindex.vSpent[prevout.n].SetNull();
- // Write back
- if (!txdb.UpdateTxIndex(prevout.hash, txindex))
- return error("DisconnectInputs() : UpdateTxIndex failed");
- }
- }
- // Remove transaction from index
- if (!txdb.EraseTxIndex(*this))
- return error("DisconnectInputs() : EraseTxPos failed");
- return true;
- }
- bool CTransaction::ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPool, CDiskTxPos posThisTx,
- CBlockIndex* pindexBlock, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee)
- {
- // Take over previous transactions' spent pointers
- if (!IsCoinBase())
- {
- int64 nValueIn = 0;
- for (int i = 0; i < vin.size(); i++)
- {
- COutPoint prevout = vin[i].prevout;
- // Read txindex
- CTxIndex txindex;
- bool fFound = true;
- if (fMiner && mapTestPool.count(prevout.hash))
- {
- // Get txindex from current proposed changes
- txindex = mapTestPool[prevout.hash];
- }
- else
- {
- // Read txindex from txdb
- fFound = txdb.ReadTxIndex(prevout.hash, txindex);
- }
- if (!fFound && (fBlock || fMiner))
- return fMiner ? false : error("ConnectInputs() : %s prev tx %s index entry not found", GetHash().ToString().substr(0,10).c_str(), prevout.hash.ToString().substr(0,10).c_str());
- // Read txPrev
- CTransaction txPrev;
- if (!fFound || txindex.pos == CDiskTxPos(1,1,1))
- {
- // Get prev tx from single transactions in memory
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- if (!mapTransactions.count(prevout.hash))
- return error("ConnectInputs() : %s mapTransactions prev not found %s", GetHash().ToString().substr(0,10).c_str(), prevout.hash.ToString().substr(0,10).c_str());
- txPrev = mapTransactions[prevout.hash];
- }
- if (!fFound)
- txindex.vSpent.resize(txPrev.vout.size());
- }
- else
- {
- // Get prev tx from disk
- if (!txPrev.ReadFromDisk(txindex.pos))
- return error("ConnectInputs() : %s ReadFromDisk prev tx %s failed", GetHash().ToString().substr(0,10).c_str(), prevout.hash.ToString().substr(0,10).c_str());
- }
- if (prevout.n >= txPrev.vout.size() || prevout.n >= txindex.vSpent.size())
- return error("ConnectInputs() : %s prevout.n out of range %d %d %d prev tx %s\n%s", GetHash().ToString().substr(0,10).c_str(), prevout.n, txPrev.vout.size(), txindex.vSpent.size(), prevout.hash.ToString().substr(0,10).c_str(), txPrev.ToString().c_str());
- // If prev is coinbase, check that it's matured
- if (txPrev.IsCoinBase())
- for (CBlockIndex* pindex = pindexBlock; pindex && pindexBlock->nHeight - pindex->nHeight < COINBASE_MATURITY; pindex = pindex->pprev)
- if (pindex->nBlockPos == txindex.pos.nBlockPos && pindex->nFile == txindex.pos.nFile)
- return error("ConnectInputs() : tried to spend coinbase at depth %d", pindexBlock->nHeight - pindex->nHeight);
- // Verify signature
- if (!VerifySignature(txPrev, *this, i))
- return error("ConnectInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,10).c_str());
- // Check for conflicts
- if (!txindex.vSpent[prevout.n].IsNull())
- return fMiner ? false : error("ConnectInputs() : %s prev tx already used at %s", GetHash().ToString().substr(0,10).c_str(), txindex.vSpent[prevout.n].ToString().c_str());
- // Check for negative or overflow input values
- nValueIn += txPrev.vout[prevout.n].nValue;
- if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
- return error("ConnectInputs() : txin values out of range");
- // Mark outpoints as spent
- txindex.vSpent[prevout.n] = posThisTx;
- // Write back
- if (fBlock)
- {
- if (!txdb.UpdateTxIndex(prevout.hash, txindex))
- return error("ConnectInputs() : UpdateTxIndex failed");
- }
- else if (fMiner)
- {
- mapTestPool[prevout.hash] = txindex;
- }
- }
- if (nValueIn < GetValueOut())
- return error("ConnectInputs() : %s value in < value out", GetHash().ToString().substr(0,10).c_str());
- // Tally transaction fees
- int64 nTxFee = nValueIn - GetValueOut();
- if (nTxFee < 0)
- return error("ConnectInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,10).c_str());
- if (nTxFee < nMinFee)
- return false;
- nFees += nTxFee;
- if (!MoneyRange(nFees))
- return error("ConnectInputs() : nFees out of range");
- }
- if (fBlock)
- {
- // Add transaction to disk index
- if (!txdb.AddTxIndex(*this, posThisTx, pindexBlock->nHeight))
- return error("ConnectInputs() : AddTxPos failed");
- }
- else if (fMiner)
- {
- // Add transaction to test pool
- mapTestPool[GetHash()] = CTxIndex(CDiskTxPos(1,1,1), vout.size());
- }
- return true;
- }
- bool CTransaction::ClientConnectInputs()
- {
- if (IsCoinBase())
- return false;
- // Take over previous transactions' spent pointers
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- int64 nValueIn = 0;
- for (int i = 0; i < vin.size(); i++)
- {
- // Get prev tx from single transactions in memory
- COutPoint prevout = vin[i].prevout;
- if (!mapTransactions.count(prevout.hash))
- return false;
- CTransaction& txPrev = mapTransactions[prevout.hash];
- if (prevout.n >= txPrev.vout.size())
- return false;
- // Verify signature
- if (!VerifySignature(txPrev, *this, i))
- return error("ConnectInputs() : VerifySignature failed");
- ///// this is redundant with the mapNextTx stuff, not sure which I want to get rid of
- ///// this has to go away now that posNext is gone
- // // Check for conflicts
- // if (!txPrev.vout[prevout.n].posNext.IsNull())
- // return error("ConnectInputs() : prev tx already used");
- //
- // // Flag outpoints as used
- // txPrev.vout[prevout.n].posNext = posThisTx;
- nValueIn += txPrev.vout[prevout.n].nValue;
- if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
- return error("ClientConnectInputs() : txin values out of range");
- }
- if (GetValueOut() > nValueIn)
- return false;
- }
- return true;
- }
- bool CBlock::DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex)
- {
- // Disconnect in reverse order
- for (int i = vtx.size()-1; i >= 0; i--)
- if (!vtx[i].DisconnectInputs(txdb))
- return false;
- // Update block index on disk without changing it in memory.
- // The memory index structure will be changed after the db commits.
- if (pindex->pprev)
- {
- CDiskBlockIndex blockindexPrev(pindex->pprev);
- blockindexPrev.hashNext = 0;
- if (!txdb.WriteBlockIndex(blockindexPrev))
- return error("DisconnectBlock() : WriteBlockIndex failed");
- }
- return true;
- }
- bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
- {
- // Check it again in case a previous version let a bad block in
- if (!CheckBlock())
- return false;
- //// issue here: it doesn't know the version
- unsigned int nTxPos = pindex->nBlockPos + ::GetSerializeSize(CBlock(), SER_DISK) - 1 + GetSizeOfCompactSize(vtx.size());
- map<uint256, CTxIndex> mapUnused;
- int64 nFees = 0;
- BOOST_FOREACH(CTransaction& tx, vtx)
- {
- CDiskTxPos posThisTx(pindex->nFile, pindex->nBlockPos, nTxPos);
- nTxPos += ::GetSerializeSize(tx, SER_DISK);
- if (!tx.ConnectInputs(txdb, mapUnused, posThisTx, pindex, nFees, true, false))
- return false;
- }
- if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
- return false;
- // Update block index on disk without changing it in memory.
- // The memory index structure will be changed after the db commits.
- if (pindex->pprev)
- {
- CDiskBlockIndex blockindexPrev(pindex->pprev);
- blockindexPrev.hashNext = pindex->GetBlockHash();
- if (!txdb.WriteBlockIndex(blockindexPrev))
- return error("ConnectBlock() : WriteBlockIndex failed");
- }
- // Watch for transactions paying to me
- BOOST_FOREACH(CTransaction& tx, vtx)
- SyncWithWallets(tx, this, true);
- return true;
- }
- bool static Reorganize(CTxDB& txdb, CBlockIndex* pindexNew)
- {
- printf("REORGANIZE\n");
- // Find the fork
- CBlockIndex* pfork = pindexBest;
- CBlockIndex* plonger = pindexNew;
- while (pfork != plonger)
- {
- while (plonger->nHeight > pfork->nHeight)
- if (!(plonger = plonger->pprev))
- return error("Reorganize() : plonger->pprev is null");
- if (pfork == plonger)
- break;
- if (!(pfork = pfork->pprev))
- return error("Reorganize() : pfork->pprev is null");
- }
- // List of what to disconnect
- vector<CBlockIndex*> vDisconnect;
- for (CBlockIndex* pindex = pindexBest; pindex != pfork; pindex = pindex->pprev)
- vDisconnect.push_back(pindex);
- // List of what to connect
- vector<CBlockIndex*> vConnect;
- for (CBlockIndex* pindex = pindexNew; pindex != pfork; pindex = pindex->pprev)
- vConnect.push_back(pindex);
- reverse(vConnect.begin(), vConnect.end());
- // Disconnect shorter branch
- vector<CTransaction> vResurrect;
- BOOST_FOREACH(CBlockIndex* pindex, vDisconnect)
- {
- CBlock block;
- if (!block.ReadFromDisk(pindex))
- return error("Reorganize() : ReadFromDisk for disconnect failed");
- if (!block.DisconnectBlock(txdb, pindex))
- return error("Reorganize() : DisconnectBlock failed");
- // Queue memory transactions to resurrect
- BOOST_FOREACH(const CTransaction& tx, block.vtx)
- if (!tx.IsCoinBase())
- vResurrect.push_back(tx);
- }
- // Connect longer branch
- vector<CTransaction> vDelete;
- for (int i = 0; i < vConnect.size(); i++)
- {
- CBlockIndex* pindex = vConnect[i];
- CBlock block;
- if (!block.ReadFromDisk(pindex))
- return error("Reorganize() : ReadFromDisk for connect failed");
- if (!block.ConnectBlock(txdb, pindex))
- {
- // Invalid block
- txdb.TxnAbort();
- return error("Reorganize() : ConnectBlock failed");
- }
- // Queue memory transactions to delete
- BOOST_FOREACH(const CTransaction& tx, block.vtx)
- vDelete.push_back(tx);
- }
- if (!txdb.WriteHashBestChain(pindexNew->GetBlockHash()))
- return error("Reorganize() : WriteHashBestChain failed");
- // Make sure it's successfully written to disk before changing memory structure
- if (!txdb.TxnCommit())
- return error("Reorganize() : TxnCommit failed");
- // Disconnect shorter branch
- BOOST_FOREACH(CBlockIndex* pindex, vDisconnect)
- if (pindex->pprev)
- pindex->pprev->pnext = NULL;
- // Connect longer branch
- BOOST_FOREACH(CBlockIndex* pindex, vConnect)
- if (pindex->pprev)
- pindex->pprev->pnext = pindex;
- // Resurrect memory transactions that were in the disconnected branch
- BOOST_FOREACH(CTransaction& tx, vResurrect)
- tx.AcceptToMemoryPool(txdb, false);
- // Delete redundant memory transactions that are in the connected branch
- BOOST_FOREACH(CTransaction& tx, vDelete)
- tx.RemoveFromMemoryPool();
- return true;
- }
- bool CBlock::SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew)
- {
- uint256 hash = GetHash();
- txdb.TxnBegin();
- if (pindexGenesisBlock == NULL && hash == hashGenesisBlock)
- {
- txdb.WriteHashBestChain(hash);
- if (!txdb.TxnCommit())
- return error("SetBestChain() : TxnCommit failed");
- pindexGenesisBlock = pindexNew;
- }
- else if (hashPrevBlock == hashBestChain)
- {
- // Adding to current best branch
- if (!ConnectBlock(txdb, pindexNew) || !txdb.WriteHashBestChain(hash))
- {
- txdb.TxnAbort();
- InvalidChainFound(pindexNew);
- return error("SetBestChain() : ConnectBlock failed");
- }
- if (!txdb.TxnCommit())
- return error("SetBestChain() : TxnCommit failed");
- // Add to current best branch
- pindexNew->pprev->pnext = pindexNew;
- // Delete redundant memory transactions
- BOOST_FOREACH(CTransaction& tx, vtx)
- tx.RemoveFromMemoryPool();
- }
- else
- {
- // New best branch
- if (!Reorganize(txdb, pindexNew))
- {
- txdb.TxnAbort();
- InvalidChainFound(pindexNew);
- return error("SetBestChain() : Reorganize failed");
- }
- }
- // Update best block in wallet (so we can detect restored wallets)
- if (!IsInitialBlockDownload())
- {
- const CBlockLocator locator(pindexNew);
- ::SetBestChain(locator);
- }
- // New best block
- hashBestChain = hash;
- pindexBest = pindexNew;
- nBestHeight = pindexBest->nHeight;
- bnBestChainWork = pindexNew->bnChainWork;
- nTimeBestReceived = GetTime();
- nTransactionsUpdated++;
- printf("SetBestChain: new best=%s height=%d work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
- return true;
- }
- bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos)
- {
- // Check for duplicate
- uint256 hash = GetHash();
- if (mapBlockIndex.count(hash))
- return error("AddToBlockIndex() : %s already exists", hash.ToString().substr(0,20).c_str());
- // Construct new block index object
- CBlockIndex* pindexNew = new CBlockIndex(nFile, nBlockPos, *this);
- if (!pindexNew)
- return error("AddToBlockIndex() : new CBlockIndex failed");
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
- pindexNew->phashBlock = &((*mi).first);
- map<uint256, CBlockIndex*>::iterator miPrev = mapBlockIndex.find(hashPrevBlock);
- if (miPrev != mapBlockIndex.end())
- {
- pindexNew->pprev = (*miPrev).second;
- pindexNew->nHeight = pindexNew->pprev->nHeight + 1;
- }
- pindexNew->bnChainWork = (pindexNew->pprev ? pindexNew->pprev->bnChainWork : 0) + pindexNew->GetBlockWork();
- CTxDB txdb;
- txdb.TxnBegin();
- txdb.WriteBlockIndex(CDiskBlockIndex(pindexNew));
- if (!txdb.TxnCommit())
- return false;
- // New best
- if (pindexNew->bnChainWork > bnBestChainWork)
- if (!SetBestChain(txdb, pindexNew))
- return false;
- txdb.Close();
- if (pindexNew == pindexBest)
- {
- // Notify UI to display prev block's coinbase if it was ours
- static uint256 hashPrevBestCoinBase;
- UpdatedTransaction(hashPrevBestCoinBase);
- hashPrevBestCoinBase = vtx[0].GetHash();
- }
- MainFrameRepaint();
- return true;
- }
- bool CBlock::CheckBlock() const
- {
- // These are checks that are independent of context
- // that can be verified before saving an orphan block.
- // Size limits
- if (vtx.empty() || vtx.size() > MAX_BLOCK_SIZE || ::GetSerializeSize(*this, SER_NETWORK) > MAX_BLOCK_SIZE)
- return error("CheckBlock() : size limits failed");
- // Check proof of work matches claimed amount
- if (!CheckProofOfWork(GetHash(), nBits))
- return error("CheckBlock() : proof of work failed");
- // Check timestamp
- if (GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)
- return error("CheckBlock() : block timestamp too far in the future");
- // First transaction must be coinbase, the rest must not be
- if (vtx.empty() || !vtx[0].IsCoinBase())
- return error("CheckBlock() : first tx is not coinbase");
- for (int i = 1; i < vtx.size(); i++)
- if (vtx[i].IsCoinBase())
- return error("CheckBlock() : more than one coinbase");
- // Check transactions
- BOOST_FOREACH(const CTransaction& tx, vtx)
- if (!tx.CheckTransaction())
- return error("CheckBlock() : CheckTransaction failed");
- // Check that it's not full of nonstandard transactions
- if (GetSigOpCount() > MAX_BLOCK_SIGOPS)
- return error("CheckBlock() : too many nonstandard transactions");
- // Check merkleroot
- if (hashMerkleRoot != BuildMerkleTree())
- return error("CheckBlock() : hashMerkleRoot mismatch");
- return true;
- }
- bool CBlock::AcceptBlock()
- {
- // Check for duplicate
- uint256 hash = GetHash();
- if (mapBlockIndex.count(hash))
- return error("AcceptBlock() : block already in mapBlockIndex");
- // Get prev block index
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashPrevBlock);
- if (mi == mapBlockIndex.end())
- return error("AcceptBlock() : prev block not found");
- CBlockIndex* pindexPrev = (*mi).second;
- int nHeight = pindexPrev->nHeight+1;
- // Check proof of work
- if (nBits != GetNextWorkRequired(pindexPrev))
- return error("AcceptBlock() : incorrect proof of work");
- // Check timestamp against prev
- if (GetBlockTime() <= pindexPrev->GetMedianTimePast())
- return error("AcceptBlock() : block's timestamp is too early");
- // Check that all transactions are finalized
- BOOST_FOREACH(const CTransaction& tx, vtx)
- if (!tx.IsFinal(nHeight, GetBlockTime()))
- return error("AcceptBlock() : contains a non-final transaction");
- // Check that the block chain matches the known block chain up to a checkpoint
- if (!fTestNet)
- if ((nHeight == 11111 && hash != uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")) ||
- (nHeight == 33333 && hash != uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")) ||
- (nHeight == 68555 && hash != uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a")) ||
- (nHeight == 70567 && hash != uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a")) ||
- (nHeight == 74000 && hash != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")) ||
- (nHeight == 105000 && hash != uint256("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")) ||
- (nHeight == 118000 && hash != uint256("0x000000000000774a7f8a7a12dc906ddb9e17e75d684f15e00f8767f9e8f36553")) ||
- (nHeight == 134444 && hash != uint256("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")))
- return error("AcceptBlock() : rejected by checkpoint lockin at %d", nHeight);
- // Write block to history file
- if (!CheckDiskSpace(::GetSerializeSize(*this, SER_DISK)))
- return error("AcceptBlock() : out of disk space");
- unsigned int nFile = -1;
- unsigned int nBlockPos = 0;
- if (!WriteToDisk(nFile, nBlockPos))
- return error("AcceptBlock() : WriteToDisk failed");
- if (!AddToBlockIndex(nFile, nBlockPos))
- return error("AcceptBlock() : AddToBlockIndex failed");
- // Relay inventory, but don't relay old inventory during initial block download
- if (hashBestChain == hash)
- CRITICAL_BLOCK(cs_vNodes)
- BOOST_FOREACH(CNode* pnode, vNodes)
- if (nBestHeight > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : 134444))
- pnode->PushInventory(CInv(MSG_BLOCK, hash));
- return true;
- }
- bool static ProcessBlock(CNode* pfrom, CBlock* pblock)
- {
- // Check for duplicate
- uint256 hash = pblock->GetHash();
- if (mapBlockIndex.count(hash))
- return error("ProcessBlock() : already have block %d %s", mapBlockIndex[hash]->nHeight, hash.ToString().substr(0,20).c_str());
- if (mapOrphanBlocks.count(hash))
- return error("ProcessBlock() : already have block (orphan) %s", hash.ToString().substr(0,20).c_str());
- // Preliminary checks
- if (!pblock->CheckBlock())
- return error("ProcessBlock() : CheckBlock FAILED");
- // If don't already have its previous block, shunt it off to holding area until we get it
- if (!mapBlockIndex.count(pblock->hashPrevBlock))
- {
- printf("ProcessBlock: ORPHAN BLOCK, prev=%s\n", pblock->hashPrevBlock.ToString().substr(0,20).c_str());
- CBlock* pblock2 = new CBlock(*pblock);
- mapOrphanBlocks.insert(make_pair(hash, pblock2));
- mapOrphanBlocksByPrev.insert(make_pair(pblock2->hashPrevBlock, pblock2));
- // Ask this guy to fill in what we're missing
- if (pfrom)
- pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(pblock2));
- return true;
- }
- // Store to disk
- if (!pblock->AcceptBlock())
- return error("ProcessBlock() : AcceptBlock FAILED");
- // Recursively process any orphan blocks that depended on this one
- vector<uint256> vWorkQueue;
- vWorkQueue.push_back(hash);
- for (int i = 0; i < vWorkQueue.size(); i++)
- {
- uint256 hashPrev = vWorkQueue[i];
- for (multimap<uint256, CBlock*>::iterator mi = mapOrphanBlocksByPrev.lower_bound(hashPrev);
- mi != mapOrphanBlocksByPrev.upper_bound(hashPrev);
- ++mi)
- {
- CBlock* pblockOrphan = (*mi).second;
- if (pblockOrphan->AcceptBlock())
- vWorkQueue.push_back(pblockOrphan->GetHash());
- mapOrphanBlocks.erase(pblockOrphan->GetHash());
- delete pblockOrphan;
- }
- mapOrphanBlocksByPrev.erase(hashPrev);
- }
- printf("ProcessBlock: ACCEPTED\n");
- return true;
- }
- template<typename Stream>
- bool static ScanMessageStart(Stream& s)
- {
- // Scan ahead to the next pchMessageStart, which should normally be immediately
- // at the file pointer. Leaves file pointer at end of pchMessageStart.
- s.clear(0);
- short prevmask = s.exceptions(0);
- const char* p = BEGIN(pchMessageStart);
- try
- {
- loop
- {
- char c;
- s.read(&c, 1);
- if (s.fail())
- {
- s.clear(0);
- s.exceptions(prevmask);
- return false;
- }
- if (*p != c)
- p = BEGIN(pchMessageStart);
- if (*p == c)
- {
- if (++p == END(pchMessageStart))
- {
- s.clear(0);
- s.exceptions(prevmask);
- return true;
- }
- }
- }
- }
- catch (...)
- {
- s.clear(0);
- s.exceptions(prevmask);
- return false;
- }
- }
- bool CheckDiskSpace(uint64 nAdditionalBytes)
- {
- uint64 nFreeBytesAvailable = filesystem::space(GetDataDir()).available;
- // Check for 15MB because database could create another 10MB log file at any time
- if (nFreeBytesAvailable < (uint64)15000000 + nAdditionalBytes)
- {
- fShutdown = true;
- string strMessage = _("Warning: Disk space is low ");
- strMiscWarning = strMessage;
- printf("*** %s\n", strMessage.c_str());
- ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION);
- CreateThread(Shutdown, NULL);
- return false;
- }
- return true;
- }
- FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode)
- {
- if (nFile == -1)
- return NULL;
- FILE* file = fopen(strprintf("%s/blk%04d.dat", GetDataDir().c_str(), nFile).c_str(), pszMode);
- if (!file)
- return NULL;
- if (nBlockPos != 0 && !strchr(pszMode, 'a') && !strchr(pszMode, 'w'))
- {
- if (fseek(file, nBlockPos, SEEK_SET) != 0)
- {
- fclose(file);
- return NULL;
- }
- }
- return file;
- }
- static unsigned int nCurrentBlockFile = 1;
- FILE* AppendBlockFile(unsigned int& nFileRet)
- {
- nFileRet = 0;
- loop
- {
- FILE* file = OpenBlockFile(nCurrentBlockFile, 0, "ab");
- if (!file)
- return NULL;
- if (fseek(file, 0, SEEK_END) != 0)
- return NULL;
- // FAT32 filesize max 4GB, fseek and ftell max 2GB, so we must stay under 2GB
- if (ftell(file) < 0x7F000000 - MAX_SIZE)
- {
- nFileRet = nCurrentBlockFile;
- return file;
- }
- fclose(file);
- nCurrentBlockFile++;
- }
- }
- bool LoadBlockIndex(bool fAllowNew)
- {
- if (fTestNet)
- {
- hashGenesisBlock = uint256("0x00000007199508e34a9ff81e6ec0c477a4cccff2a4767a8eee39c11db367b008");
- bnProofOfWorkLimit = CBigNum(~uint256(0) >> 28);
- pchMessageStart[0] = 0xfa;
- pchMessageStart[1] = 0xbf;
- pchMessageStart[2] = 0xb5;
- pchMessageStart[3] = 0xda;
- }
- //
- // Load block index
- //
- CTxDB txdb("cr");
- if (!txdb.LoadBlockIndex())
- return false;
- txdb.Close();
- //
- // Init with genesis block
- //
- if (mapBlockIndex.empty())
- {
- if (!fAllowNew)
- return false;
- // Genesis Block:
- // CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
- // CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
- // CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
- // CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
- // vMerkleTree: 4a5e1e
- // Genesis block
- const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
- CTransaction txNew;
- txNew.vin.resize(1);
- txNew.vout.resize(1);
- txNew.vin[0].scriptSig = CScript() << 486604799 << CBigNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
- txNew.vout[0].nValue = 50 * COIN;
- txNew.vout[0].scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
- CBlock block;
- block.vtx.push_back(txNew);
- block.hashPrevBlock = 0;
- block.hashMerkleRoot = block.BuildMerkleTree();
- block.nVersion = 1;
- block.nTime = 1231006505;
- block.nBits = 0x1d00ffff;
- block.nNonce = 2083236893;
- if (fTestNet)
- {
- block.nTime = 1296688602;
- block.nBits = 0x1d07fff8;
- block.nNonce = 384568319;
- }
- //// debug print
- printf("%s\n", block.GetHash().ToString().c_str());
- printf("%s\n", hashGenesisBlock.ToString().c_str());
- printf("%s\n", block.hashMerkleRoot.ToString().c_str());
- assert(block.hashMerkleRoot == uint256("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
- block.print();
- assert(block.GetHash() == hashGenesisBlock);
- // Start new block file
- unsigned int nFile;
- unsigned int nBlockPos;
- if (!block.WriteToDisk(nFile, nBlockPos))
- return error("LoadBlockIndex() : writing genesis block to disk failed");
- if (!block.AddToBlockIndex(nFile, nBlockPos))
- return error("LoadBlockIndex() : genesis block not accepted");
- }
- return true;
- }
- void PrintBlockTree()
- {
- // precompute tree structure
- map<CBlockIndex*, vector<CBlockIndex*> > mapNext;
- for (map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.begin(); mi != mapBlockIndex.end(); ++mi)
- {
- CBlockIndex* pindex = (*mi).second;
- mapNext[pindex->pprev].push_back(pindex);
- // test
- //while (rand() % 3 == 0)
- // mapNext[pindex->pprev].push_back(pindex);
- }
- vector<pair<int, CBlockIndex*> > vStack;
- vStack.push_back(make_pair(0, pindexGenesisBlock));
- int nPrevCol = 0;
- while (!vStack.empty())
- {
- int nCol = vStack.back().first;
- CBlockIndex* pindex = vStack.back().second;
- vStack.pop_back();
- // print split or gap
- if (nCol > nPrevCol)
- {
- for (int i = 0; i < nCol-1; i++)
- printf("| ");
- printf("|\\\n");
- }
- else if (nCol < nPrevCol)
- {
- for (int i = 0; i < nCol; i++)
- printf("| ");
- printf("|\n");
- }
- nPrevCol = nCol;
- // print columns
- for (int i = 0; i < nCol; i++)
- printf("| ");
- // print item
- CBlock block;
- block.ReadFromDisk(pindex);
- printf("%d (%u,%u) %s %s tx %d",
- pindex->nHeight,
- pindex->nFile,
- pindex->nBlockPos,
- block.GetHash().ToString().substr(0,20).c_str(),
- DateTimeStrFormat("%x %H:%M:%S", block.GetBlockTime()).c_str(),
- block.vtx.size());
- PrintWallets(block);
- // put the main timechain first
- vector<CBlockIndex*>& vNext = mapNext[pindex];
- for (int i = 0; i < vNext.size(); i++)
- {
- if (vNext[i]->pnext)
- {
- swap(vNext[0], vNext[i]);
- break;
- }
- }
- // iterate children
- for (int i = 0; i < vNext.size(); i++)
- vStack.push_back(make_pair(nCol+i, vNext[i]));
- }
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // CAlert
- //
- map<uint256, CAlert> mapAlerts;
- CCriticalSection cs_mapAlerts;
- string GetWarnings(string strFor)
- {
- int nPriority = 0;
- string strStatusBar;
- string strRPC;
- if (GetBoolArg("-testsafemode"))
- strRPC = "test";
- // Misc warnings like out of disk space and clock is wrong
- if (strMiscWarning != "")
- {
- nPriority = 1000;
- strStatusBar = strMiscWarning;
- }
- // Longer invalid proof-of-work chain
- if (pindexBest && bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6)
- {
- nPriority = 2000;
- strStatusBar = strRPC = "WARNING: Displayed transactions may not be correct! You may need to upgrade, or other nodes may need to upgrade.";
- }
- // Alerts
- CRITICAL_BLOCK(cs_mapAlerts)
- {
- BOOST_FOREACH(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
- {
- const CAlert& alert = item.second;
- if (alert.AppliesToMe() && alert.nPriority > nPriority)
- {
- nPriority = alert.nPriority;
- strStatusBar = alert.strStatusBar;
- }
- }
- }
- if (strFor == "statusbar")
- return strStatusBar;
- else if (strFor == "rpc")
- return strRPC;
- assert(("GetWarnings() : invalid parameter", false));
- return "error";
- }
- bool CAlert::ProcessAlert()
- {
- if (!CheckSignature())
- return false;
- if (!IsInEffect())
- return false;
- CRITICAL_BLOCK(cs_mapAlerts)
- {
- // Cancel previous alerts
- for (map<uint256, CAlert>::iterator mi = mapAlerts.begin(); mi != mapAlerts.end();)
- {
- const CAlert& alert = (*mi).second;
- if (Cancels(alert))
- {
- printf("cancelling alert %d\n", alert.nID);
- mapAlerts.erase(mi++);
- }
- else if (!alert.IsInEffect())
- {
- printf("expiring alert %d\n", alert.nID);
- mapAlerts.erase(mi++);
- }
- else
- mi++;
- }
- // Check if this alert has been cancelled
- BOOST_FOREACH(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
- {
- const CAlert& alert = item.second;
- if (alert.Cancels(*this))
- {
- printf("alert already cancelled by %d\n", alert.nID);
- return false;
- }
- }
- // Add to mapAlerts
- mapAlerts.insert(make_pair(GetHash(), *this));
- }
- printf("accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe());
- MainFrameRepaint();
- return true;
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // Messages
- //
- bool static AlreadyHave(CTxDB& txdb, const CInv& inv)
- {
- switch (inv.type)
- {
- case MSG_TX: return mapTransactions.count(inv.hash) || mapOrphanTransactions.count(inv.hash) || txdb.ContainsTx(inv.hash);
- case MSG_BLOCK: return mapBlockIndex.count(inv.hash) || mapOrphanBlocks.count(inv.hash);
- }
- // Don't know what it is, just say we already got one
- return true;
- }
- // The message start string is designed to be unlikely to occur in normal data.
- // The characters are rarely used upper ascii, not valid as UTF-8, and produce
- // a large 4-byte int at any alignment.
- char pchMessageStart[4] = { 0xf9, 0xbe, 0xb4, 0xd9 };
- bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
- {
- static map<unsigned int, vector<unsigned char> > mapReuseKey;
- RandAddSeedPerfmon();
- if (fDebug)
- printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
- printf("received: %s (%d bytes)\n", strCommand.c_str(), vRecv.size());
- if (mapArgs.count("-dropmessagestest") && GetRand(atoi(mapArgs["-dropmessagestest"])) == 0)
- {
- printf("dropmessagestest DROPPING RECV MESSAGE\n");
- return true;
- }
- if (strCommand == "version")
- {
- // Each connection can only send one version message
- if (pfrom->nVersion != 0)
- return false;
- int64 nTime;
- CAddress addrMe;
- CAddress addrFrom;
- uint64 nNonce = 1;
- vRecv >> pfrom->nVersion >> pfrom->nServices >> nTime >> addrMe;
- if (pfrom->nVersion == 10300)
- pfrom->nVersion = 300;
- if (pfrom->nVersion >= 106 && !vRecv.empty())
- vRecv >> addrFrom >> nNonce;
- if (pfrom->nVersion >= 106 && !vRecv.empty())
- vRecv >> pfrom->strSubVer;
- if (pfrom->nVersion >= 209 && !vRecv.empty())
- vRecv >> pfrom->nStartingHeight;
- if (pfrom->nVersion == 0)
- return false;
- // Disconnect if we connected to ourself
- if (nNonce == nLocalHostNonce && nNonce > 1)
- {
- printf("connected to self at %s, disconnecting\n", pfrom->addr.ToString().c_str());
- pfrom->fDisconnect = true;
- return true;
- }
- // Be shy and don't send version until we hear
- if (pfrom->fInbound)
- pfrom->PushVersion();
- pfrom->fClient = !(pfrom->nServices & NODE_NETWORK);
- AddTimeData(pfrom->addr.ip, nTime);
- // Change version
- if (pfrom->nVersion >= 209)
- pfrom->PushMessage("verack");
- pfrom->vSend.SetVersion(min(pfrom->nVersion, VERSION));
- if (pfrom->nVersion < 209)
- pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));
- if (!pfrom->fInbound)
- {
- // Advertise our address
- if (addrLocalHost.IsRoutable() && !fUseProxy)
- {
- CAddress addr(addrLocalHost);
- addr.nTime = GetAdjustedTime();
- pfrom->PushAddress(addr);
- }
- // Get recent addresses
- if (pfrom->nVersion >= 31402 || mapAddresses.size() < 1000)
- {
- pfrom->PushMessage("getaddr");
- pfrom->fGetAddr = true;
- }
- }
- // Ask the first connected node for block updates
- static int nAskedForBlocks;
- if (!pfrom->fClient && (nAskedForBlocks < 1 || vNodes.size() <= 1))
- {
- nAskedForBlocks++;
- pfrom->PushGetBlocks(pindexBest, uint256(0));
- }
- // Relay alerts
- CRITICAL_BLOCK(cs_mapAlerts)
- BOOST_FOREACH(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
- item.second.RelayTo(pfrom);
- pfrom->fSuccessfullyConnected = true;
- printf("version message: version %d, blocks=%d\n", pfrom->nVersion, pfrom->nStartingHeight);
- }
- else if (pfrom->nVersion == 0)
- {
- // Must have a version message before anything else
- return false;
- }
- else if (strCommand == "verack")
- {
- pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));
- }
- else if (strCommand == "addr")
- {
- vector<CAddress> vAddr;
- vRecv >> vAddr;
- // Don't want addr from older versions unless seeding
- if (pfrom->nVersion < 209)
- return true;
- if (pfrom->nVersion < 31402 && mapAddresses.size() > 1000)
- return true;
- if (vAddr.size() > 1000)
- return error("message addr size() = %d", vAddr.size());
- // Store the new addresses
- int64 nNow = GetAdjustedTime();
- int64 nSince = nNow - 10 * 60;
- BOOST_FOREACH(CAddress& addr, vAddr)
- {
- if (fShutdown)
- return true;
- // ignore IPv6 for now, since it isn't implemented anyway
- if (!addr.IsIPv4())
- continue;
- if (addr.nTime <= 100000000 || addr.nTime > nNow + 10 * 60)
- addr.nTime = nNow - 5 * 24 * 60 * 60;
- AddAddress(addr, 2 * 60 * 60);
- pfrom->AddAddressKnown(addr);
- if (addr.nTime > nSince && !pfrom->fGetAddr && vAddr.size() <= 10 && addr.IsRoutable())
- {
- // Relay to a limited number of other nodes
- CRITICAL_BLOCK(cs_vNodes)
- {
- // Use deterministic randomness to send to the same nodes for 24 hours
- // at a time so the setAddrKnowns of the chosen nodes prevent repeats
- static uint256 hashSalt;
- if (hashSalt == 0)
- RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
- uint256 hashRand = hashSalt ^ (((int64)addr.ip)<<32) ^ ((GetTime()+addr.ip)/(24*60*60));
- hashRand = Hash(BEGIN(hashRand), END(hashRand));
- multimap<uint256, CNode*> mapMix;
- BOOST_FOREACH(CNode* pnode, vNodes)
- {
- if (pnode->nVersion < 31402)
- continue;
- unsigned int nPointer;
- memcpy(&nPointer, &pnode, sizeof(nPointer));
- uint256 hashKey = hashRand ^ nPointer;
- hashKey = Hash(BEGIN(hashKey), END(hashKey));
- mapMix.insert(make_pair(hashKey, pnode));
- }
- int nRelayNodes = 2;
- for (multimap<uint256, CNode*>::iterator mi = mapMix.begin(); mi != mapMix.end() && nRelayNodes-- > 0; ++mi)
- ((*mi).second)->PushAddress(addr);
- }
- }
- }
- if (vAddr.size() < 1000)
- pfrom->fGetAddr = false;
- }
- else if (strCommand == "inv")
- {
- vector<CInv> vInv;
- vRecv >> vInv;
- if (vInv.size() > 50000)
- return error("message inv size() = %d", vInv.size());
- CTxDB txdb("r");
- BOOST_FOREACH(const CInv& inv, vInv)
- {
- if (fShutdown)
- return true;
- pfrom->AddInventoryKnown(inv);
- bool fAlreadyHave = AlreadyHave(txdb, inv);
- printf(" got inventory: %s %s\n", inv.ToString().c_str(), fAlreadyHave ? "have" : "new");
- if (!fAlreadyHave)
- pfrom->AskFor(inv);
- else if (inv.type == MSG_BLOCK && mapOrphanBlocks.count(inv.hash))
- pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(mapOrphanBlocks[inv.hash]));
- // Track requests for our stuff
- Inventory(inv.hash);
- }
- }
- else if (strCommand == "getdata")
- {
- vector<CInv> vInv;
- vRecv >> vInv;
- if (vInv.size() > 50000)
- return error("message getdata size() = %d", vInv.size());
- BOOST_FOREACH(const CInv& inv, vInv)
- {
- if (fShutdown)
- return true;
- printf("received getdata for: %s\n", inv.ToString().c_str());
- if (inv.type == MSG_BLOCK)
- {
- // Send block from disk
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(inv.hash);
- if (mi != mapBlockIndex.end())
- {
- CBlock block;
- block.ReadFromDisk((*mi).second);
- pfrom->PushMessage("block", block);
- // Trigger them to send a getblocks request for the next batch of inventory
- if (inv.hash == pfrom->hashContinue)
- {
- // Bypass PushInventory, this must send even if redundant,
- // and we want it right after the last block so they don't
- // wait for other stuff first.
- vector<CInv> vInv;
- vInv.push_back(CInv(MSG_BLOCK, hashBestChain));
- pfrom->PushMessage("inv", vInv);
- pfrom->hashContinue = 0;
- }
- }
- }
- else if (inv.IsKnownType())
- {
- // Send stream from relay memory
- CRITICAL_BLOCK(cs_mapRelay)
- {
- map<CInv, CDataStream>::iterator mi = mapRelay.find(inv);
- if (mi != mapRelay.end())
- pfrom->PushMessage(inv.GetCommand(), (*mi).second);
- }
- }
- // Track requests for our stuff
- Inventory(inv.hash);
- }
- }
- else if (strCommand == "getblocks")
- {
- CBlockLocator locator;
- uint256 hashStop;
- vRecv >> locator >> hashStop;
- // Find the last block the caller has in the main chain
- CBlockIndex* pindex = locator.GetBlockIndex();
- // Send the rest of the chain
- if (pindex)
- pindex = pindex->pnext;
- int nLimit = 500 + locator.GetDistanceBack();
- unsigned int nBytes = 0;
- printf("getblocks %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,20).c_str(), nLimit);
- for (; pindex; pindex = pindex->pnext)
- {
- if (pindex->GetBlockHash() == hashStop)
- {
- printf(" getblocks stopping at %d %s (%u bytes)\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str(), nBytes);
- break;
- }
- pfrom->PushInventory(CInv(MSG_BLOCK, pindex->GetBlockHash()));
- CBlock block;
- block.ReadFromDisk(pindex, true);
- nBytes += block.GetSerializeSize(SER_NETWORK);
- if (--nLimit <= 0 || nBytes >= SendBufferSize()/2)
- {
- // When this block is requested, we'll send an inv that'll make them
- // getblocks the next batch of inventory.
- printf(" getblocks stopping at limit %d %s (%u bytes)\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str(), nBytes);
- pfrom->hashContinue = pindex->GetBlockHash();
- break;
- }
- }
- }
- else if (strCommand == "getheaders")
- {
- CBlockLocator locator;
- uint256 hashStop;
- vRecv >> locator >> hashStop;
- CBlockIndex* pindex = NULL;
- if (locator.IsNull())
- {
- // If locator is null, return the hashStop block
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashStop);
- if (mi == mapBlockIndex.end())
- return true;
- pindex = (*mi).second;
- }
- else
- {
- // Find the last block the caller has in the main chain
- pindex = locator.GetBlockIndex();
- if (pindex)
- pindex = pindex->pnext;
- }
- vector<CBlock> vHeaders;
- int nLimit = 2000 + locator.GetDistanceBack();
- printf("getheaders %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,20).c_str(), nLimit);
- for (; pindex; pindex = pindex->pnext)
- {
- vHeaders.push_back(pindex->GetBlockHeader());
- if (--nLimit <= 0 || pindex->GetBlockHash() == hashStop)
- break;
- }
- pfrom->PushMessage("headers", vHeaders);
- }
- else if (strCommand == "tx")
- {
- vector<uint256> vWorkQueue;
- CDataStream vMsg(vRecv);
- CTransaction tx;
- vRecv >> tx;
- CInv inv(MSG_TX, tx.GetHash());
- pfrom->AddInventoryKnown(inv);
- bool fMissingInputs = false;
- if (tx.AcceptToMemoryPool(true, &fMissingInputs))
- {
- SyncWithWallets(tx, NULL, true);
- RelayMessage(inv, vMsg);
- mapAlreadyAskedFor.erase(inv);
- vWorkQueue.push_back(inv.hash);
- // Recursively process any orphan transactions that depended on this one
- for (int i = 0; i < vWorkQueue.size(); i++)
- {
- uint256 hashPrev = vWorkQueue[i];
- for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(hashPrev);
- mi != mapOrphanTransactionsByPrev.upper_bound(hashPrev);
- ++mi)
- {
- const CDataStream& vMsg = *((*mi).second);
- CTransaction tx;
- CDataStream(vMsg) >> tx;
- CInv inv(MSG_TX, tx.GetHash());
- if (tx.AcceptToMemoryPool(true))
- {
- printf(" accepted orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
- SyncWithWallets(tx, NULL, true);
- RelayMessage(inv, vMsg);
- mapAlreadyAskedFor.erase(inv);
- vWorkQueue.push_back(inv.hash);
- }
- }
- }
- BOOST_FOREACH(uint256 hash, vWorkQueue)
- EraseOrphanTx(hash);
- }
- else if (fMissingInputs)
- {
- printf("storing orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
- AddOrphanTx(vMsg);
- }
- }
- else if (strCommand == "block")
- {
- CBlock block;
- vRecv >> block;
- printf("received block %s\n", block.GetHash().ToString().substr(0,20).c_str());
- // block.print();
- CInv inv(MSG_BLOCK, block.GetHash());
- pfrom->AddInventoryKnown(inv);
- if (ProcessBlock(pfrom, &block))
- mapAlreadyAskedFor.erase(inv);
- }
- else if (strCommand == "getaddr")
- {
- // Nodes rebroadcast an addr every 24 hours
- pfrom->vAddrToSend.clear();
- int64 nSince = GetAdjustedTime() - 3 * 60 * 60; // in the last 3 hours
- CRITICAL_BLOCK(cs_mapAddresses)
- {
- unsigned int nCount = 0;
- BOOST_FOREACH(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
- {
- const CAddress& addr = item.second;
- if (addr.nTime > nSince)
- nCount++;
- }
- BOOST_FOREACH(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
- {
- const CAddress& addr = item.second;
- if (addr.nTime > nSince && GetRand(nCount) < 2500)
- pfrom->PushAddress(addr);
- }
- }
- }
- else if (strCommand == "checkorder")
- {
- uint256 hashReply;
- vRecv >> hashReply;
- if (!GetBoolArg("-allowreceivebyip"))
- {
- pfrom->PushMessage("reply", hashReply, (int)2, string(""));
- return true;
- }
- CWalletTx order;
- vRecv >> order;
- /// we have a chance to check the order here
- // Keep giving the same key to the same ip until they use it
- if (!mapReuseKey.count(pfrom->addr.ip))
- mapReuseKey[pfrom->addr.ip] = pwalletMain->GetKeyFromKeyPool();
- // Send back approval of order and pubkey to use
- CScript scriptPubKey;
- scriptPubKey << mapReuseKey[pfrom->addr.ip] << OP_CHECKSIG;
- pfrom->PushMessage("reply", hashReply, (int)0, scriptPubKey);
- }
- else if (strCommand == "reply")
- {
- uint256 hashReply;
- vRecv >> hashReply;
- CRequestTracker tracker;
- CRITICAL_BLOCK(pfrom->cs_mapRequests)
- {
- map<uint256, CRequestTracker>::iterator mi = pfrom->mapRequests.find(hashReply);
- if (mi != pfrom->mapRequests.end())
- {
- tracker = (*mi).second;
- pfrom->mapRequests.erase(mi);
- }
- }
- if (!tracker.IsNull())
- tracker.fn(tracker.param1, vRecv);
- }
- else if (strCommand == "ping")
- {
- }
- else if (strCommand == "alert")
- {
- CAlert alert;
- vRecv >> alert;
- if (alert.ProcessAlert())
- {
- // Relay
- pfrom->setKnown.insert(alert.GetHash());
- CRITICAL_BLOCK(cs_vNodes)
- BOOST_FOREACH(CNode* pnode, vNodes)
- alert.RelayTo(pnode);
- }
- }
- else
- {
- // Ignore unknown commands for extensibility
- }
- // Update the last seen time for this node's address
- if (pfrom->fNetworkNode)
- if (strCommand == "version" || strCommand == "addr" || strCommand == "inv" || strCommand == "getdata" || strCommand == "ping")
- AddressCurrentlyConnected(pfrom->addr);
- return true;
- }
- bool ProcessMessages(CNode* pfrom)
- {
- CDataStream& vRecv = pfrom->vRecv;
- if (vRecv.empty())
- return true;
- //if (fDebug)
- // printf("ProcessMessages(%u bytes)\n", vRecv.size());
- //
- // Message format
- // (4) message start
- // (12) command
- // (4) size
- // (4) checksum
- // (x) data
- //
- loop
- {
- // Scan for message start
- CDataStream::iterator pstart = search(vRecv.begin(), vRecv.end(), BEGIN(pchMessageStart), END(pchMessageStart));
- int nHeaderSize = vRecv.GetSerializeSize(CMessageHeader());
- if (vRecv.end() - pstart < nHeaderSize)
- {
- if (vRecv.size() > nHeaderSize)
- {
- printf("\n\nPROCESSMESSAGE MESSAGESTART NOT FOUND\n\n");
- vRecv.erase(vRecv.begin(), vRecv.end() - nHeaderSize);
- }
- break;
- }
- if (pstart - vRecv.begin() > 0)
- printf("\n\nPROCESSMESSAGE SKIPPED %d BYTES\n\n", pstart - vRecv.begin());
- vRecv.erase(vRecv.begin(), pstart);
- // Read header
- vector<char> vHeaderSave(vRecv.begin(), vRecv.begin() + nHeaderSize);
- CMessageHeader hdr;
- vRecv >> hdr;
- if (!hdr.IsValid())
- {
- printf("\n\nPROCESSMESSAGE: ERRORS IN HEADER %s\n\n\n", hdr.GetCommand().c_str());
- continue;
- }
- string strCommand = hdr.GetCommand();
- // Message size
- unsigned int nMessageSize = hdr.nMessageSize;
- if (nMessageSize > MAX_SIZE)
- {
- printf("ProcessMessage(%s, %u bytes) : nMessageSize > MAX_SIZE\n", strCommand.c_str(), nMessageSize);
- continue;
- }
- if (nMessageSize > vRecv.size())
- {
- // Rewind and wait for rest of message
- vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());
- break;
- }
- // Checksum
- if (vRecv.GetVersion() >= 209)
- {
- uint256 hash = Hash(vRecv.begin(), vRecv.begin() + nMessageSize);
- unsigned int nChecksum = 0;
- memcpy(&nChecksum, &hash, sizeof(nChecksum));
- if (nChecksum != hdr.nChecksum)
- {
- printf("ProcessMessage(%s, %u bytes) : CHECKSUM ERROR nChecksum=%08x hdr.nChecksum=%08x\n",
- strCommand.c_str(), nMessageSize, nChecksum, hdr.nChecksum);
- continue;
- }
- }
- // Copy message to its own buffer
- CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);
- vRecv.ignore(nMessageSize);
- // Process message
- bool fRet = false;
- try
- {
- CRITICAL_BLOCK(cs_main)
- fRet = ProcessMessage(pfrom, strCommand, vMsg);
- if (fShutdown)
- return true;
- }
- catch (std::ios_base::failure& e)
- {
- if (strstr(e.what(), "end of data"))
- {
- // Allow exceptions from underlength message on vRecv
- printf("ProcessMessage(%s, %u bytes) : Exception '%s' caught, normally caused by a message being shorter than its stated length\n", strCommand.c_str(), nMessageSize, e.what());
- }
- else if (strstr(e.what(), "size too large"))
- {
- // Allow exceptions from overlong size
- printf("ProcessMessage(%s, %u bytes) : Exception '%s' caught\n", strCommand.c_str(), nMessageSize, e.what());
- }
- else
- {
- PrintExceptionContinue(&e, "ProcessMessage()");
- }
- }
- catch (std::exception& e) {
- PrintExceptionContinue(&e, "ProcessMessage()");
- } catch (...) {
- PrintExceptionContinue(NULL, "ProcessMessage()");
- }
- if (!fRet)
- printf("ProcessMessage(%s, %u bytes) FAILED\n", strCommand.c_str(), nMessageSize);
- }
- vRecv.Compact();
- return true;
- }
- bool SendMessages(CNode* pto, bool fSendTrickle)
- {
- CRITICAL_BLOCK(cs_main)
- {
- // Don't send anything until we get their version message
- if (pto->nVersion == 0)
- return true;
- // Keep-alive ping
- if (pto->nLastSend && GetTime() - pto->nLastSend > 30 * 60 && pto->vSend.empty())
- pto->PushMessage("ping");
- // Resend wallet transactions that haven't gotten in a block yet
- ResendWalletTransactions();
- // Address refresh broadcast
- static int64 nLastRebroadcast;
- if (GetTime() - nLastRebroadcast > 24 * 60 * 60)
- {
- nLastRebroadcast = GetTime();
- CRITICAL_BLOCK(cs_vNodes)
- {
- BOOST_FOREACH(CNode* pnode, vNodes)
- {
- // Periodically clear setAddrKnown to allow refresh broadcasts
- pnode->setAddrKnown.clear();
- // Rebroadcast our address
- if (addrLocalHost.IsRoutable() && !fUseProxy)
- {
- CAddress addr(addrLocalHost);
- addr.nTime = GetAdjustedTime();
- pnode->PushAddress(addr);
- }
- }
- }
- }
- // Clear out old addresses periodically so it's not too much work at once
- static int64 nLastClear;
- if (nLastClear == 0)
- nLastClear = GetTime();
- if (GetTime() - nLastClear > 10 * 60 && vNodes.size() >= 3)
- {
- nLastClear = GetTime();
- CRITICAL_BLOCK(cs_mapAddresses)
- {
- CAddrDB addrdb;
- int64 nSince = GetAdjustedTime() - 14 * 24 * 60 * 60;
- for (map<vector<unsigned char>, CAddress>::iterator mi = mapAddresses.begin();
- mi != mapAddresses.end();)
- {
- const CAddress& addr = (*mi).second;
- if (addr.nTime < nSince)
- {
- if (mapAddresses.size() < 1000 || GetTime() > nLastClear + 20)
- break;
- addrdb.EraseAddress(addr);
- mapAddresses.erase(mi++);
- }
- else
- mi++;
- }
- }
- }
- //
- // Message: addr
- //
- if (fSendTrickle)
- {
- vector<CAddress> vAddr;
- vAddr.reserve(pto->vAddrToSend.size());
- BOOST_FOREACH(const CAddress& addr, pto->vAddrToSend)
- {
- // returns true if wasn't already contained in the set
- if (pto->setAddrKnown.insert(addr).second)
- {
- vAddr.push_back(addr);
- // receiver rejects addr messages larger than 1000
- if (vAddr.size() >= 1000)
- {
- pto->PushMessage("addr", vAddr);
- vAddr.clear();
- }
- }
- }
- pto->vAddrToSend.clear();
- if (!vAddr.empty())
- pto->PushMessage("addr", vAddr);
- }
- //
- // Message: inventory
- //
- vector<CInv> vInv;
- vector<CInv> vInvWait;
- CRITICAL_BLOCK(pto->cs_inventory)
- {
- vInv.reserve(pto->vInventoryToSend.size());
- vInvWait.reserve(pto->vInventoryToSend.size());
- BOOST_FOREACH(const CInv& inv, pto->vInventoryToSend)
- {
- if (pto->setInventoryKnown.count(inv))
- continue;
- // trickle out tx inv to protect privacy
- if (inv.type == MSG_TX && !fSendTrickle)
- {
- // 1/4 of tx invs blast to all immediately
- static uint256 hashSalt;
- if (hashSalt == 0)
- RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
- uint256 hashRand = inv.hash ^ hashSalt;
- hashRand = Hash(BEGIN(hashRand), END(hashRand));
- bool fTrickleWait = ((hashRand & 3) != 0);
- // always trickle our own transactions
- if (!fTrickleWait)
- {
- CWalletTx wtx;
- if (GetTransaction(inv.hash, wtx))
- if (wtx.fFromMe)
- fTrickleWait = true;
- }
- if (fTrickleWait)
- {
- vInvWait.push_back(inv);
- continue;
- }
- }
- // returns true if wasn't already contained in the set
- if (pto->setInventoryKnown.insert(inv).second)
- {
- vInv.push_back(inv);
- if (vInv.size() >= 1000)
- {
- pto->PushMessage("inv", vInv);
- vInv.clear();
- }
- }
- }
- pto->vInventoryToSend = vInvWait;
- }
- if (!vInv.empty())
- pto->PushMessage("inv", vInv);
- //
- // Message: getdata
- //
- vector<CInv> vGetData;
- int64 nNow = GetTime() * 1000000;
- CTxDB txdb("r");
- while (!pto->mapAskFor.empty() && (*pto->mapAskFor.begin()).first <= nNow)
- {
- const CInv& inv = (*pto->mapAskFor.begin()).second;
- if (!AlreadyHave(txdb, inv))
- {
- printf("sending getdata: %s\n", inv.ToString().c_str());
- vGetData.push_back(inv);
- if (vGetData.size() >= 1000)
- {
- pto->PushMessage("getdata", vGetData);
- vGetData.clear();
- }
- }
- pto->mapAskFor.erase(pto->mapAskFor.begin());
- }
- if (!vGetData.empty())
- pto->PushMessage("getdata", vGetData);
- }
- 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;
- }
- using CryptoPP::ByteReverse;
- static const unsigned int pSHA256InitState[8] =
- {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};
- inline void SHA256Transform(void* pstate, void* pinput, const void* pinit)
- {
- memcpy(pstate, pinit, 32);
- CryptoPP::SHA256::Transform((CryptoPP::word32*)pstate, (CryptoPP::word32*)pinput);
- }
- //
- // ScanHash scans nonces looking for a hash with at least some zero bits.
- // It operates on big endian data. Caller does the byte reversing.
- // All input buffers are 16-byte aligned. nNonce is usually preserved
- // between calls, but periodically or if nNonce is 0xffff0000 or above,
- // the block is rebuilt and nNonce starts over at zero.
- //
- unsigned int static ScanHash_CryptoPP(char* pmidstate, char* pdata, char* phash1, char* phash, unsigned int& nHashesDone)
- {
- unsigned int& nNonce = *(unsigned int*)(pdata + 12);
- for (;;)
- {
- // Crypto++ SHA-256
- // Hash pdata using pmidstate as the starting state into
- // preformatted buffer phash1, then hash phash1 into phash
- nNonce++;
- SHA256Transform(phash1, pdata, pmidstate);
- SHA256Transform(phash, phash1, pSHA256InitState);
- // Return the nonce if the hash has at least some zero bits,
- // caller will check if it has enough to reach the target
- if (((unsigned short*)phash)[14] == 0)
- return nNonce;
- // If nothing found after trying for a while, return -1
- if ((nNonce & 0xffff) == 0)
- {
- nHashesDone = 0xffff+1;
- return -1;
- }
- }
- }
- class COrphan
- {
- public:
- CTransaction* ptx;
- set<uint256> setDependsOn;
- double dPriority;
- COrphan(CTransaction* ptxIn)
- {
- ptx = ptxIn;
- dPriority = 0;
- }
- void print() const
- {
- printf("COrphan(hash=%s, dPriority=%.1f)\n", ptx->GetHash().ToString().substr(0,10).c_str(), dPriority);
- BOOST_FOREACH(uint256 hash, setDependsOn)
- printf(" setDependsOn %s\n", hash.ToString().substr(0,10).c_str());
- }
- };
- CBlock* CreateNewBlock(CReserveKey& reservekey)
- {
- CBlockIndex* pindexPrev = pindexBest;
- // Create new block
- auto_ptr<CBlock> 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);
- // Collect memory pool transactions into the block
- int64 nFees = 0;
- CRITICAL_BLOCK(cs_main)
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- CTxDB txdb("r");
- // Priority order to process transactions
- list<COrphan> vOrphan; // list memory doesn't move
- map<uint256, vector<COrphan*> > mapDependers;
- multimap<double, CTransaction*> mapPriority;
- for (map<uint256, CTransaction>::iterator mi = mapTransactions.begin(); mi != mapTransactions.end(); ++mi)
- {
- CTransaction& tx = (*mi).second;
- if (tx.IsCoinBase() || !tx.IsFinal())
- continue;
- COrphan* porphan = NULL;
- double dPriority = 0;
- BOOST_FOREACH(const CTxIn& txin, tx.vin)
- {
- // Read prev transaction
- CTransaction txPrev;
- CTxIndex txindex;
- if (!txPrev.ReadFromDisk(txdb, txin.prevout, txindex))
- {
- // 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);
- continue;
- }
- int64 nValueIn = txPrev.vout[txin.prevout.n].nValue;
- // Read block header
- int nConf = txindex.GetDepthInMainChain();
- dPriority += (double)nValueIn * nConf;
- if (fDebug && GetBoolArg("-printpriority"))
- printf("priority nValueIn=%-12I64d nConf=%-5d dPriority=%-20.1f\n", nValueIn, nConf, dPriority);
- }
- // Priority is sum(valuein * age) / txsize
- dPriority /= ::GetSerializeSize(tx, SER_NETWORK);
- if (porphan)
- porphan->dPriority = dPriority;
- else
- mapPriority.insert(make_pair(-dPriority, &(*mi).second));
- if (fDebug && GetBoolArg("-printpriority"))
- {
- printf("priority %-20.1f %s\n%s", dPriority, tx.GetHash().ToString().substr(0,10).c_str(), tx.ToString().c_str());
- if (porphan)
- porphan->print();
- printf("\n");
- }
- }
- // Collect transactions into block
- map<uint256, CTxIndex> mapTestPool;
- uint64 nBlockSize = 1000;
- int nBlockSigOps = 100;
- while (!mapPriority.empty())
- {
- // Take highest priority transaction off priority queue
- double dPriority = -(*mapPriority.begin()).first;
- CTransaction& tx = *(*mapPriority.begin()).second;
- mapPriority.erase(mapPriority.begin());
- // Size limits
- unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK);
- if (nBlockSize + nTxSize >= MAX_BLOCK_SIZE_GEN)
- continue;
- int nTxSigOps = tx.GetSigOpCount();
- if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS)
- continue;
- // Transaction fee required depends on block size
- bool fAllowFree = (nBlockSize + nTxSize < 4000 || CTransaction::AllowFree(dPriority));
- int64 nMinFee = tx.GetMinFee(nBlockSize, fAllowFree, true);
- // Connecting shouldn't fail due to dependency on other memory pool transactions
- // because we're already processing them in order of dependency
- map<uint256, CTxIndex> mapTestPoolTmp(mapTestPool);
- if (!tx.ConnectInputs(txdb, mapTestPoolTmp, CDiskTxPos(1,1,1), pindexPrev, nFees, false, true, nMinFee))
- continue;
- swap(mapTestPool, mapTestPoolTmp);
- // Added
- pblock->vtx.push_back(tx);
- nBlockSize += nTxSize;
- nBlockSigOps += nTxSigOps;
- // 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())
- mapPriority.insert(make_pair(-porphan->dPriority, porphan->ptx));
- }
- }
- }
- }
- }
- pblock->vtx[0].vout[0].nValue = GetBlockValue(pindexPrev->nHeight+1, nFees);
- // Fill in header
- pblock->hashPrevBlock = pindexPrev->GetBlockHash();
- pblock->hashMerkleRoot = pblock->BuildMerkleTree();
- pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
- pblock->nBits = GetNextWorkRequired(pindexPrev);
- pblock->nNonce = 0;
- return pblock.release();
- }
- void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime)
- {
- // Update nExtraNonce
- int64 nNow = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
- if (++nExtraNonce >= 0x7f && nNow > nPrevTime+1)
- {
- nExtraNonce = 1;
- nPrevTime = nNow;
- }
- pblock->vtx[0].vin[0].scriptSig = CScript() << pblock->nBits << CBigNum(nExtraNonce);
- pblock->hashMerkleRoot = pblock->BuildMerkleTree();
- }
- void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1)
- {
- //
- // Prebuild 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 (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)
- return false;
- //// debug print
- printf("BitcoinMiner:\n");
- printf("proof-of-work found \n hash: %s \ntarget: %s\n", hash.GetHex().c_str(), hashTarget.GetHex().c_str());
- pblock->print();
- printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());
- printf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue).c_str());
- // Found a solution
- CRITICAL_BLOCK(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
- CRITICAL_BLOCK(wallet.cs_mapRequestCount)
- 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");
- }
- Sleep(2000);
- return true;
- }
- void static ThreadBitcoinMiner(void* parg);
- void static BitcoinMiner(CWallet *pwallet)
- {
- printf("BitcoinMiner started\n");
- SetThreadPriority(THREAD_PRIORITY_LOWEST);
- // Each thread has its own key and counter
- CReserveKey reservekey(pwallet);
- unsigned int nExtraNonce = 0;
- int64 nPrevTime = 0;
- while (fGenerateBitcoins)
- {
- if (AffinityBugWorkaround(ThreadBitcoinMiner))
- return;
- if (fShutdown)
- return;
- while (vNodes.empty() || IsInitialBlockDownload())
- {
- Sleep(1000);
- if (fShutdown)
- return;
- if (!fGenerateBitcoins)
- return;
- }
- //
- // Create new block
- //
- unsigned int nTransactionsUpdatedLast = nTransactionsUpdated;
- CBlockIndex* pindexPrev = pindexBest;
- auto_ptr<CBlock> pblock(CreateNewBlock(reservekey));
- if (!pblock.get())
- return;
- IncrementExtraNonce(pblock.get(), pindexPrev, nExtraNonce, nPrevTime);
- printf("Running BitcoinMiner with %d transactions in block\n", pblock->vtx.size());
- //
- // Prebuild hash buffers
- //
- char pmidstatebuf[32+16]; char* pmidstate = alignup<16>(pmidstatebuf);
- char pdatabuf[128+16]; char* pdata = alignup<16>(pdatabuf);
- char phash1buf[64+16]; char* phash1 = alignup<16>(phash1buf);
- FormatHashBuffers(pblock.get(), pmidstate, pdata, phash1);
- unsigned int& nBlockTime = *(unsigned int*)(pdata + 64 + 4);
- unsigned int& nBlockNonce = *(unsigned int*)(pdata + 64 + 12);
- //
- // Search
- //
- int64 nStart = GetTime();
- uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
- uint256 hashbuf[2];
- uint256& hash = *alignup<16>(hashbuf);
- loop
- {
- unsigned int nHashesDone = 0;
- unsigned int nNonceFound;
- // Crypto++ SHA-256
- nNonceFound = ScanHash_CryptoPP(pmidstate, pdata + 64, phash1,
- (char*)&hash, nHashesDone);
- // Check if something found
- if (nNonceFound != -1)
- {
- for (int i = 0; i < sizeof(hash)/4; i++)
- ((unsigned int*)&hash)[i] = ByteReverse(((unsigned int*)&hash)[i]);
- if (hash <= hashTarget)
- {
- // Found a solution
- pblock->nNonce = ByteReverse(nNonceFound);
- assert(hash == pblock->GetHash());
- SetThreadPriority(THREAD_PRIORITY_NORMAL);
- CheckWork(pblock.get(), *pwalletMain, reservekey);
- SetThreadPriority(THREAD_PRIORITY_LOWEST);
- break;
- }
- }
- // Meter hashes/sec
- static int64 nHashCounter;
- if (nHPSTimerStart == 0)
- {
- nHPSTimerStart = GetTimeMillis();
- nHashCounter = 0;
- }
- else
- nHashCounter += nHashesDone;
- if (GetTimeMillis() - nHPSTimerStart > 4000)
- {
- static CCriticalSection cs;
- CRITICAL_BLOCK(cs)
- {
- if (GetTimeMillis() - nHPSTimerStart > 4000)
- {
- dHashesPerSec = 1000.0 * nHashCounter / (GetTimeMillis() - nHPSTimerStart);
- nHPSTimerStart = GetTimeMillis();
- nHashCounter = 0;
- string strStatus = strprintf(" %.0f khash/s", dHashesPerSec/1000.0);
- UIThreadCall(boost::bind(CalledSetStatusBar, strStatus, 0));
- static int64 nLogTime;
- if (GetTime() - nLogTime > 30 * 60)
- {
- nLogTime = GetTime();
- printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());
- printf("hashmeter %3d CPUs %6.0f khash/s\n", vnThreadsRunning[3], dHashesPerSec/1000.0);
- }
- }
- }
- }
- // Check for stop or if block needs to be rebuilt
- if (fShutdown)
- return;
- if (!fGenerateBitcoins)
- return;
- if (fLimitProcessors && vnThreadsRunning[3] > nLimitProcessors)
- return;
- if (vNodes.empty())
- break;
- if (nBlockNonce >= 0xffff0000)
- break;
- if (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60)
- break;
- if (pindexPrev != pindexBest)
- break;
- // Update nTime every few seconds
- pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
- nBlockTime = ByteReverse(pblock->nTime);
- }
- }
- }
- void static ThreadBitcoinMiner(void* parg)
- {
- CWallet* pwallet = (CWallet*)parg;
- try
- {
- vnThreadsRunning[3]++;
- BitcoinMiner(pwallet);
- vnThreadsRunning[3]--;
- }
- catch (std::exception& e) {
- vnThreadsRunning[3]--;
- PrintException(&e, "ThreadBitcoinMiner()");
- } catch (...) {
- vnThreadsRunning[3]--;
- PrintException(NULL, "ThreadBitcoinMiner()");
- }
- UIThreadCall(boost::bind(CalledSetStatusBar, "", 0));
- nHPSTimerStart = 0;
- if (vnThreadsRunning[3] == 0)
- dHashesPerSec = 0;
- printf("ThreadBitcoinMiner exiting, %d threads remaining\n", vnThreadsRunning[3]);
- }
- void GenerateBitcoins(bool fGenerate, CWallet* pwallet)
- {
- if (fGenerateBitcoins != fGenerate)
- {
- fGenerateBitcoins = fGenerate;
- WriteSetting("fGenerateBitcoins", fGenerateBitcoins);
- MainFrameRepaint();
- }
- if (fGenerateBitcoins)
- {
- int nProcessors = boost::thread::hardware_concurrency();
- printf("%d processors\n", nProcessors);
- if (nProcessors < 1)
- nProcessors = 1;
- if (fLimitProcessors && nProcessors > nLimitProcessors)
- nProcessors = nLimitProcessors;
- int nAddThreads = nProcessors - vnThreadsRunning[3];
- printf("Starting %d BitcoinMiner threads\n", nAddThreads);
- for (int i = 0; i < nAddThreads; i++)
- {
- if (!CreateThread(ThreadBitcoinMiner, pwallet))
- printf("Error: CreateThread(ThreadBitcoinMiner) failed\n");
- Sleep(10);
- }
- }
- }