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- // 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 "cryptopp/sha.h"
- //
- // Global state
- //
- CCriticalSection cs_main;
- map<uint256, CTransaction> mapTransactions;
- CCriticalSection cs_mapTransactions;
- unsigned int nTransactionsUpdated = 0;
- map<COutPoint, CInPoint> mapNextTx;
- map<uint256, CBlockIndex*> mapBlockIndex;
- const uint256 hashGenesisBlock("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f");
- 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;
- map<uint256, CWalletTx> mapWallet;
- vector<uint256> vWalletUpdated;
- CCriticalSection cs_mapWallet;
- map<vector<unsigned char>, CPrivKey> mapKeys;
- map<uint160, vector<unsigned char> > mapPubKeys;
- CCriticalSection cs_mapKeys;
- CKey keyUser;
- map<uint256, int> mapRequestCount;
- CCriticalSection cs_mapRequestCount;
- map<string, string> mapAddressBook;
- CCriticalSection cs_mapAddressBook;
- vector<unsigned char> vchDefaultKey;
- 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;
- //////////////////////////////////////////////////////////////////////////////
- //
- // mapKeys
- //
- bool AddKey(const CKey& key)
- {
- CRITICAL_BLOCK(cs_mapKeys)
- {
- mapKeys[key.GetPubKey()] = key.GetPrivKey();
- mapPubKeys[Hash160(key.GetPubKey())] = key.GetPubKey();
- }
- return CWalletDB().WriteKey(key.GetPubKey(), key.GetPrivKey());
- }
- vector<unsigned char> GenerateNewKey()
- {
- RandAddSeedPerfmon();
- CKey key;
- key.MakeNewKey();
- if (!AddKey(key))
- throw runtime_error("GenerateNewKey() : AddKey failed\n");
- return key.GetPubKey();
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // mapWallet
- //
- bool AddToWallet(const CWalletTx& wtxIn)
- {
- uint256 hash = wtxIn.GetHash();
- CRITICAL_BLOCK(cs_mapWallet)
- {
- // Inserts only if not already there, returns tx inserted or tx found
- pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
- CWalletTx& wtx = (*ret.first).second;
- bool fInsertedNew = ret.second;
- if (fInsertedNew)
- wtx.nTimeReceived = GetAdjustedTime();
- bool fUpdated = false;
- if (!fInsertedNew)
- {
- // Merge
- if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
- {
- wtx.hashBlock = wtxIn.hashBlock;
- fUpdated = true;
- }
- if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
- {
- wtx.vMerkleBranch = wtxIn.vMerkleBranch;
- wtx.nIndex = wtxIn.nIndex;
- fUpdated = true;
- }
- if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
- {
- wtx.fFromMe = wtxIn.fFromMe;
- fUpdated = true;
- }
- if (wtxIn.fSpent && wtxIn.fSpent != wtx.fSpent)
- {
- wtx.fSpent = wtxIn.fSpent;
- fUpdated = true;
- }
- }
- //// debug print
- printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().substr(0,6).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
- // Write to disk
- if (fInsertedNew || fUpdated)
- if (!wtx.WriteToDisk())
- return false;
- // If default receiving address gets used, replace it with a new one
- CScript scriptDefaultKey;
- scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);
- foreach(const CTxOut& txout, wtx.vout)
- {
- if (txout.scriptPubKey == scriptDefaultKey)
- {
- CWalletDB walletdb;
- walletdb.WriteDefaultKey(GenerateNewKey());
- walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
- }
- }
- // Notify UI
- vWalletUpdated.push_back(hash);
- }
- // Refresh UI
- MainFrameRepaint();
- return true;
- }
- bool AddToWalletIfMine(const CTransaction& tx, const CBlock* pblock)
- {
- if (tx.IsMine() || mapWallet.count(tx.GetHash()))
- {
- CWalletTx wtx(tx);
- // Get merkle branch if transaction was found in a block
- if (pblock)
- wtx.SetMerkleBranch(pblock);
- return AddToWallet(wtx);
- }
- return true;
- }
- bool EraseFromWallet(uint256 hash)
- {
- CRITICAL_BLOCK(cs_mapWallet)
- {
- if (mapWallet.erase(hash))
- CWalletDB().EraseTx(hash);
- }
- return true;
- }
- void WalletUpdateSpent(const COutPoint& prevout)
- {
- // Anytime a signature is successfully verified, it's proof the outpoint is spent.
- // Update the wallet spent flag if it doesn't know due to wallet.dat being
- // restored from backup or the user making copies of wallet.dat.
- CRITICAL_BLOCK(cs_mapWallet)
- {
- map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
- if (mi != mapWallet.end())
- {
- CWalletTx& wtx = (*mi).second;
- if (!wtx.fSpent && wtx.vout[prevout.n].IsMine())
- {
- printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
- wtx.fSpent = true;
- wtx.WriteToDisk();
- vWalletUpdated.push_back(prevout.hash);
- }
- }
- }
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // mapOrphanTransactions
- //
- void 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);
- foreach(const CTxIn& txin, tx.vin)
- mapOrphanTransactionsByPrev.insert(make_pair(txin.prevout.hash, pvMsg));
- }
- void EraseOrphanTx(uint256 hash)
- {
- if (!mapOrphanTransactions.count(hash))
- return;
- const CDataStream* pvMsg = mapOrphanTransactions[hash];
- CTransaction tx;
- CDataStream(*pvMsg) >> tx;
- 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
- //
- bool CTxIn::IsMine() const
- {
- CRITICAL_BLOCK(cs_mapWallet)
- {
- map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
- if (mi != mapWallet.end())
- {
- const CWalletTx& prev = (*mi).second;
- if (prevout.n < prev.vout.size())
- if (prev.vout[prevout.n].IsMine())
- return true;
- }
- }
- return false;
- }
- int64 CTxIn::GetDebit() const
- {
- CRITICAL_BLOCK(cs_mapWallet)
- {
- map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
- if (mi != mapWallet.end())
- {
- const CWalletTx& prev = (*mi).second;
- if (prevout.n < prev.vout.size())
- if (prev.vout[prevout.n].IsMine())
- return prev.vout[prevout.n].nValue;
- }
- }
- return 0;
- }
- int64 CWalletTx::GetTxTime() const
- {
- if (!fTimeReceivedIsTxTime && hashBlock != 0)
- {
- // If we did not receive the transaction directly, we rely on the block's
- // time to figure out when it happened. We use the median over a range
- // of blocks to try to filter out inaccurate block times.
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
- if (mi != mapBlockIndex.end())
- {
- CBlockIndex* pindex = (*mi).second;
- if (pindex)
- return pindex->GetMedianTime();
- }
- }
- return nTimeReceived;
- }
- int CWalletTx::GetRequestCount() const
- {
- // Returns -1 if it wasn't being tracked
- int nRequests = -1;
- CRITICAL_BLOCK(cs_mapRequestCount)
- {
- if (IsCoinBase())
- {
- // Generated block
- if (hashBlock != 0)
- {
- map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);
- if (mi != mapRequestCount.end())
- nRequests = (*mi).second;
- }
- }
- else
- {
- // Did anyone request this transaction?
- map<uint256, int>::iterator mi = mapRequestCount.find(GetHash());
- if (mi != mapRequestCount.end())
- {
- nRequests = (*mi).second;
- // How about the block it's in?
- if (nRequests == 0 && hashBlock != 0)
- {
- map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);
- if (mi != mapRequestCount.end())
- nRequests = (*mi).second;
- else
- nRequests = 1; // If it's in someone else's block it must have got out
- }
- }
- }
- }
- return nRequests;
- }
- 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;
- }
- void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
- {
- vtxPrev.clear();
- const int COPY_DEPTH = 3;
- if (SetMerkleBranch() < COPY_DEPTH)
- {
- vector<uint256> vWorkQueue;
- foreach(const CTxIn& txin, vin)
- vWorkQueue.push_back(txin.prevout.hash);
- // This critsect is OK because txdb is already open
- CRITICAL_BLOCK(cs_mapWallet)
- {
- map<uint256, const CMerkleTx*> mapWalletPrev;
- set<uint256> setAlreadyDone;
- for (int i = 0; i < vWorkQueue.size(); i++)
- {
- uint256 hash = vWorkQueue[i];
- if (setAlreadyDone.count(hash))
- continue;
- setAlreadyDone.insert(hash);
- CMerkleTx tx;
- if (mapWallet.count(hash))
- {
- tx = mapWallet[hash];
- foreach(const CMerkleTx& txWalletPrev, mapWallet[hash].vtxPrev)
- mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
- }
- else if (mapWalletPrev.count(hash))
- {
- tx = *mapWalletPrev[hash];
- }
- else if (!fClient && txdb.ReadDiskTx(hash, tx))
- {
- ;
- }
- else
- {
- printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
- continue;
- }
- int nDepth = tx.SetMerkleBranch();
- vtxPrev.push_back(tx);
- if (nDepth < COPY_DEPTH)
- foreach(const CTxIn& txin, tx.vin)
- vWorkQueue.push_back(txin.prevout.hash);
- }
- }
- }
- reverse(vtxPrev.begin(), vtxPrev.end());
- }
- bool CTransaction::AcceptTransaction(CTxDB& txdb, bool fCheckInputs, bool* pfMissingInputs)
- {
- if (pfMissingInputs)
- *pfMissingInputs = false;
- // Coinbase is only valid in a block, not as a loose transaction
- if (IsCoinBase())
- return error("AcceptTransaction() : coinbase as individual tx");
- if (!CheckTransaction())
- return error("AcceptTransaction() : CheckTransaction failed");
- // To help v0.1.5 clients who would see it as a negative number
- if (nLockTime > INT_MAX)
- return error("AcceptTransaction() : not accepting nLockTime beyond 2038");
- // 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))
- {
- // Allow replacing with a newer version of the same transaction
- if (i != 0)
- return false;
- ptxOld = mapNextTx[outpoint].ptx;
- 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;
- }
- }
- // Check against previous transactions
- map<uint256, CTxIndex> mapUnused;
- int64 nFees = 0;
- if (fCheckInputs && !ConnectInputs(txdb, mapUnused, CDiskTxPos(1,1,1), pindexBest, nFees, false, false))
- {
- if (pfMissingInputs)
- *pfMissingInputs = true;
- return error("AcceptTransaction() : ConnectInputs failed %s", hash.ToString().substr(0,6).c_str());
- }
- // Store transaction in memory
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- if (ptxOld)
- {
- printf("mapTransaction.erase(%s) replacing with new version\n", ptxOld->GetHash().ToString().c_str());
- mapTransactions.erase(ptxOld->GetHash());
- }
- AddToMemoryPool();
- }
- ///// are we sure this is ok when loading transactions or restoring block txes
- // If updated, erase old tx from wallet
- if (ptxOld)
- EraseFromWallet(ptxOld->GetHash());
- printf("AcceptTransaction(): accepted %s\n", hash.ToString().substr(0,6).c_str());
- return true;
- }
- bool CTransaction::AddToMemoryPool()
- {
- // Add to memory pool without checking anything. Don't call this directly,
- // call AcceptTransaction 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)
- {
- 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::AcceptTransaction(CTxDB& txdb, bool fCheckInputs)
- {
- if (fClient)
- {
- if (!IsInMainChain() && !ClientConnectInputs())
- return false;
- return CTransaction::AcceptTransaction(txdb, false);
- }
- else
- {
- return CTransaction::AcceptTransaction(txdb, fCheckInputs);
- }
- }
- bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)
- {
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- foreach(CMerkleTx& tx, vtxPrev)
- {
- if (!tx.IsCoinBase())
- {
- uint256 hash = tx.GetHash();
- if (!mapTransactions.count(hash) && !txdb.ContainsTx(hash))
- tx.AcceptTransaction(txdb, fCheckInputs);
- }
- }
- if (!IsCoinBase())
- return AcceptTransaction(txdb, fCheckInputs);
- }
- return true;
- }
- void ReacceptWalletTransactions()
- {
- CTxDB txdb("r");
- CRITICAL_BLOCK(cs_mapWallet)
- {
- foreach(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
- {
- CWalletTx& wtx = item.second;
- if (wtx.fSpent && wtx.IsCoinBase())
- continue;
- CTxIndex txindex;
- if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
- {
- // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
- if (!wtx.fSpent)
- {
- if (txindex.vSpent.size() != wtx.vout.size())
- {
- printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
- continue;
- }
- for (int i = 0; i < txindex.vSpent.size(); i++)
- {
- if (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())
- {
- printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
- wtx.fSpent = true;
- wtx.WriteToDisk();
- break;
- }
- }
- }
- }
- else
- {
- // Reaccept any txes of ours that aren't already in a block
- if (!wtx.IsCoinBase())
- wtx.AcceptWalletTransaction(txdb, false);
- }
- }
- }
- }
- void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
- {
- foreach(const CMerkleTx& tx, vtxPrev)
- {
- if (!tx.IsCoinBase())
- {
- uint256 hash = tx.GetHash();
- if (!txdb.ContainsTx(hash))
- RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
- }
- }
- if (!IsCoinBase())
- {
- uint256 hash = GetHash();
- if (!txdb.ContainsTx(hash))
- {
- printf("Relaying wtx %s\n", hash.ToString().substr(0,6).c_str());
- RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
- }
- }
- }
- void ResendWalletTransactions()
- {
- // Do this infrequently and randomly to avoid giving away
- // that these are our transactions.
- static int64 nNextTime;
- if (GetTime() < nNextTime)
- return;
- bool fFirst = (nNextTime == 0);
- nNextTime = GetTime() + GetRand(30 * 60);
- if (fFirst)
- return;
- // Rebroadcast any of our txes that aren't in a block yet
- printf("ResendWalletTransactions()\n");
- CTxDB txdb("r");
- CRITICAL_BLOCK(cs_mapWallet)
- {
- // Sort them in chronological order
- multimap<unsigned int, CWalletTx*> mapSorted;
- foreach(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
- {
- CWalletTx& wtx = item.second;
- // Don't rebroadcast until it's had plenty of time that
- // it should have gotten in already by now.
- if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
- mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
- }
- foreach(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
- {
- CWalletTx& wtx = *item.second;
- wtx.RelayWalletTransaction(txdb);
- }
- }
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // CBlock and CBlockIndex
- //
- bool CBlock::ReadFromDisk(const CBlockIndex* pblockindex, bool fReadTransactions)
- {
- return ReadFromDisk(pblockindex->nFile, pblockindex->nBlockPos, fReadTransactions);
- }
- uint256 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 CBlock::GetBlockValue(int nHeight, int64 nFees) const
- {
- int64 nSubsidy = 50 * COIN;
- // Subsidy is cut in half every 4 years
- nSubsidy >>= (nHeight / 210000);
- return nSubsidy + nFees;
- }
- unsigned int 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 = (int64)pindexLast->nTime - (int64)pindexFirst->nTime;
- 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 IsInitialBlockDownload()
- {
- if (pindexBest == NULL)
- return true;
- static int64 nLastUpdate;
- static CBlockIndex* pindexLastBest;
- if (pindexBest != pindexLastBest)
- {
- pindexLastBest = pindexBest;
- nLastUpdate = GetTime();
- }
- return (GetTime() - nLastUpdate < 10 &&
- pindexBest->nTime < GetTime() - 24 * 60 * 60);
- }
- bool IsLockdown()
- {
- if (!pindexBest)
- return false;
- return (bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6);
- }
- void Lockdown(CBlockIndex* pindexNew)
- {
- if (pindexNew->bnChainWork > bnBestInvalidWork)
- {
- bnBestInvalidWork = pindexNew->bnChainWork;
- CTxDB().WriteBestInvalidWork(bnBestInvalidWork);
- MainFrameRepaint();
- }
- printf("Lockdown: invalid block=%s height=%d work=%s\n", pindexNew->GetBlockHash().ToString().substr(0,22).c_str(), pindexNew->nHeight, pindexNew->bnChainWork.ToString().c_str());
- printf("Lockdown: current best=%s height=%d work=%s\n", hashBestChain.ToString().substr(0,22).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
- printf("Lockdown: IsLockdown()=%d\n", (IsLockdown() ? 1 : 0));
- if (IsLockdown())
- printf("Lockdown: 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())
- {
- 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
- txdb.UpdateTxIndex(prevout.hash, txindex);
- }
- }
- // 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(0,6).c_str(), prevout.hash.ToString().substr(0,6).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(0,6).c_str(), prevout.hash.ToString().substr(0,6).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(0,6).c_str(), prevout.hash.ToString().substr(0,6).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(0,6).c_str(), prevout.n, txPrev.vout.size(), txindex.vSpent.size(), prevout.hash.ToString().substr(0,6).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(0,6).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(0,6).c_str(), txindex.vSpent[prevout.n].ToString().c_str());
- // Mark outpoints as spent
- txindex.vSpent[prevout.n] = posThisTx;
- // Write back
- if (fBlock)
- txdb.UpdateTxIndex(prevout.hash, txindex);
- else if (fMiner)
- mapTestPool[prevout.hash] = txindex;
- nValueIn += txPrev.vout[prevout.n].nValue;
- // Check for negative or overflow input values
- if (txPrev.vout[prevout.n].nValue < 0)
- return error("ConnectInputs() : txin.nValue negative");
- if (txPrev.vout[prevout.n].nValue > MAX_MONEY)
- return error("ConnectInputs() : txin.nValue too high");
- if (nValueIn > MAX_MONEY)
- return error("ConnectInputs() : txin total too high");
- }
- // Tally transaction fees
- int64 nTxFee = nValueIn - GetValueOut();
- if (nTxFee < 0)
- return error("ConnectInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,6).c_str());
- if (nTxFee < nMinFee)
- return false;
- nFees += nTxFee;
- }
- 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 (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;
- txdb.WriteBlockIndex(blockindexPrev);
- }
- return true;
- }
- bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
- {
- //// 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;
- 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();
- txdb.WriteBlockIndex(blockindexPrev);
- }
- // Watch for transactions paying to me
- foreach(CTransaction& tx, vtx)
- AddToWalletIfMine(tx, this);
- return true;
- }
- bool 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;
- foreach(CBlockIndex* pindex, vDisconnect)
- {
- CBlock block;
- if (!block.ReadFromDisk(pindex->nFile, pindex->nBlockPos))
- return error("Reorganize() : ReadFromDisk for disconnect failed");
- if (!block.DisconnectBlock(txdb, pindex))
- return error("Reorganize() : DisconnectBlock failed");
- // Queue memory transactions to resurrect
- 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->nFile, pindex->nBlockPos))
- 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
- foreach(const CTransaction& tx, block.vtx)
- vDelete.push_back(tx);
- }
- if (!txdb.WriteHashBestChain(pindexNew->GetBlockHash()))
- return error("Reorganize() : WriteHashBestChain failed");
- // Commit now because resurrecting could take some time
- txdb.TxnCommit();
- // Disconnect shorter branch
- foreach(CBlockIndex* pindex, vDisconnect)
- if (pindex->pprev)
- pindex->pprev->pnext = NULL;
- // Connect longer branch
- foreach(CBlockIndex* pindex, vConnect)
- if (pindex->pprev)
- pindex->pprev->pnext = pindex;
- // Resurrect memory transactions that were in the disconnected branch
- foreach(CTransaction& tx, vResurrect)
- tx.AcceptTransaction(txdb, false);
- // Delete redundant memory transactions that are in the connected branch
- foreach(CTransaction& tx, vDelete)
- tx.RemoveFromMemoryPool();
- 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(0,16).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.WriteBlockIndex(CDiskBlockIndex(pindexNew));
- // New best
- if (pindexNew->bnChainWork > bnBestChainWork)
- {
- txdb.TxnBegin();
- if (pindexGenesisBlock == NULL && hash == hashGenesisBlock)
- {
- pindexGenesisBlock = pindexNew;
- txdb.WriteHashBestChain(hash);
- }
- else if (hashPrevBlock == hashBestChain)
- {
- // Adding to current best branch
- if (!ConnectBlock(txdb, pindexNew) || !txdb.WriteHashBestChain(hash))
- {
- txdb.TxnAbort();
- Lockdown(pindexNew);
- return error("AddToBlockIndex() : ConnectBlock failed");
- }
- txdb.TxnCommit();
- pindexNew->pprev->pnext = pindexNew;
- // Delete redundant memory transactions
- foreach(CTransaction& tx, vtx)
- tx.RemoveFromMemoryPool();
- }
- else
- {
- // New best branch
- if (!Reorganize(txdb, pindexNew))
- {
- txdb.TxnAbort();
- Lockdown(pindexNew);
- return error("AddToBlockIndex() : Reorganize failed");
- }
- }
- txdb.TxnCommit();
- // New best block
- hashBestChain = hash;
- pindexBest = pindexNew;
- nBestHeight = pindexBest->nHeight;
- bnBestChainWork = pindexNew->bnChainWork;
- nTimeBestReceived = GetTime();
- nTransactionsUpdated++;
- printf("AddToBlockIndex: new best=%s height=%d work=%s\n", hashBestChain.ToString().substr(0,22).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
- }
- txdb.Close();
- if (pindexNew == pindexBest)
- {
- // Notify UI to display prev block's coinbase if it was ours
- static uint256 hashPrevBestCoinBase;
- CRITICAL_BLOCK(cs_mapWallet)
- vWalletUpdated.push_back(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_SIZE || ::GetSerializeSize(*this, SER_DISK) > MAX_SIZE)
- return error("CheckBlock() : size limits failed");
- // Check timestamp
- if (nTime > 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
- foreach(const CTransaction& tx, vtx)
- if (!tx.CheckTransaction())
- return error("CheckBlock() : CheckTransaction failed");
- // Check proof of work matches claimed amount
- if (CBigNum().SetCompact(nBits) > bnProofOfWorkLimit)
- return error("CheckBlock() : nBits below minimum work");
- if (GetHash() > CBigNum().SetCompact(nBits).getuint256())
- return error("CheckBlock() : hash doesn't match nBits");
- // 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;
- // Check timestamp against prev
- if (nTime <= pindexPrev->GetMedianTimePast())
- return error("AcceptBlock() : block's timestamp is too early");
- // Check that all transactions are finalized
- foreach(const CTransaction& tx, vtx)
- if (!tx.IsFinal(pindexPrev->nHeight+1, nTime))
- return error("AcceptBlock() : contains a non-final transaction");
- // Check proof of work
- if (nBits != GetNextWorkRequired(pindexPrev))
- return error("AcceptBlock() : incorrect proof of work");
- // Check that the block chain matches the known block chain up to a checkpoint
- if ((pindexPrev->nHeight+1 == 11111 && hash != uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")) ||
- (pindexPrev->nHeight+1 == 33333 && hash != uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")) ||
- (pindexPrev->nHeight+1 == 68555 && hash != uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a")) ||
- (pindexPrev->nHeight+1 == 70567 && hash != uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a")) ||
- (pindexPrev->nHeight+1 == 74000 && hash != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")))
- return error("AcceptBlock() : rejected by checkpoint lockin at %d", pindexPrev->nHeight+1);
- // Scanback checkpoint lockin
- for (CBlockIndex* pindex = pindexPrev; pindex->nHeight >= 74000; pindex = pindex->pprev)
- {
- if (pindex->nHeight == 74000 && pindex->GetBlockHash() != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
- return error("AcceptBlock() : rejected by scanback lockin at %d", pindex->nHeight);
- if (pindex->nHeight == 74638 && pindex->GetBlockHash() == uint256("0x0000000000790ab3f22ec756ad43b6ab569abf0bddeb97c67a6f7b1470a7ec1c"))
- return error("AcceptBlock() : rejected by scanback lockin at %d", pindex->nHeight);
- }
- // Write block to history file
- if (!CheckDiskSpace(::GetSerializeSize(*this, SER_DISK)))
- return error("AcceptBlock() : out of disk space");
- unsigned int nFile;
- unsigned int nBlockPos;
- if (!WriteToDisk(!fClient, 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)
- foreach(CNode* pnode, vNodes)
- if (nBestHeight > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : 55000))
- pnode->PushInventory(CInv(MSG_BLOCK, hash));
- return true;
- }
- bool 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(0,16).c_str());
- if (mapOrphanBlocks.count(hash))
- return error("ProcessBlock() : already have block (orphan) %s", hash.ToString().substr(0,16).c_str());
- // Preliminary checks
- if (!pblock->CheckBlock())
- {
- delete pblock;
- 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(0,16).c_str());
- mapOrphanBlocks.insert(make_pair(hash, pblock));
- mapOrphanBlocksByPrev.insert(make_pair(pblock->hashPrevBlock, pblock));
- // Ask this guy to fill in what we're missing
- if (pfrom)
- pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(pblock));
- return true;
- }
- // Store to disk
- if (!pblock->AcceptBlock())
- {
- delete pblock;
- return error("ProcessBlock() : AcceptBlock FAILED");
- }
- delete pblock;
- // 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 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(int64 nAdditionalBytes)
- {
- uint64 nFreeBytesAvailable = filesystem::space(GetDataDir()).available;
- // Check for 15MB because database could create another 10MB log file at any time
- if (nFreeBytesAvailable < (int64)15000000 + nAdditionalBytes)
- {
- fShutdown = true;
- printf("*** %s***\n", _("Warning: Disk space is low "));
- #ifdef GUI
- ThreadSafeMessageBox(_("Warning: Disk space is low "), "Bitcoin", wxOK | wxICON_EXCLAMATION);
- #endif
- 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)
- {
- //
- // 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:
- // GetHash() = 0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
- // hashMerkleRoot = 0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
- // txNew.vin[0].scriptSig = 486604799 4 0x736B6E616220726F662074756F6C69616220646E6F63657320666F206B6E697262206E6F20726F6C6C65636E61684320393030322F6E614A2F33302073656D695420656854
- // txNew.vout[0].nValue = 5000000000
- // txNew.vout[0].scriptPubKey = 0x5F1DF16B2B704C8A578D0BBAF74D385CDE12C11EE50455F3C438EF4C3FBCF649B6DE611FEAE06279A60939E028A8D65C10B73071A6F16719274855FEB0FD8A6704 OP_CHECKSIG
- // block.nVersion = 1
- // block.nTime = 1231006505
- // block.nBits = 0x1d00ffff
- // block.nNonce = 2083236893
- // 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;
- CBigNum bnPubKey;
- bnPubKey.SetHex("0x5F1DF16B2B704C8A578D0BBAF74D385CDE12C11EE50455F3C438EF4C3FBCF649B6DE611FEAE06279A60939E028A8D65C10B73071A6F16719274855FEB0FD8A6704");
- txNew.vout[0].scriptPubKey = CScript() << bnPubKey << 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;
- //// debug print
- printf("%s\n", block.GetHash().ToString().c_str());
- printf("%s\n", block.hashMerkleRoot.ToString().c_str());
- printf("%s\n", hashGenesisBlock.ToString().c_str());
- txNew.vout[0].scriptPubKey.print();
- block.print();
- assert(block.hashMerkleRoot == uint256("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
- assert(block.GetHash() == hashGenesisBlock);
- // Start new block file
- unsigned int nFile;
- unsigned int nBlockPos;
- if (!block.WriteToDisk(!fClient, 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(0,16).c_str(),
- DateTimeStrFormat("%x %H:%M:%S", block.nTime).c_str(),
- block.vtx.size());
- CRITICAL_BLOCK(cs_mapWallet)
- {
- if (mapWallet.count(block.vtx[0].GetHash()))
- {
- CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
- printf(" mine: %d %d %d", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
- }
- }
- printf("\n");
- // 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]));
- }
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // Messages
- //
- bool AlreadyHave(CTxDB& txdb, const CInv& inv)
- {
- switch (inv.type)
- {
- case MSG_TX: return mapTransactions.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;
- }
- bool ProcessMessages(CNode* pfrom)
- {
- CDataStream& vRecv = pfrom->vRecv;
- if (vRecv.empty())
- return true;
- //if (fDebug)
- // printf("ProcessMessages(%d 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 > vRecv.size())
- {
- // Rewind and wait for rest of message
- ///// need a mechanism to give up waiting for overlong message size error
- vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());
- break;
- }
- // Copy message to its own buffer
- CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);
- vRecv.ignore(nMessageSize);
- // Checksum
- if (vRecv.GetVersion() >= 209)
- {
- uint256 hash = Hash(vMsg.begin(), vMsg.end());
- unsigned int nChecksum = 0;
- memcpy(&nChecksum, &hash, sizeof(nChecksum));
- if (nChecksum != hdr.nChecksum)
- {
- printf("ProcessMessage(%s, %d bytes) : CHECKSUM ERROR nChecksum=%08x hdr.nChecksum=%08x\n",
- strCommand.c_str(), nMessageSize, nChecksum, hdr.nChecksum);
- continue;
- }
- }
- // 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(), "CDataStream::read() : end of data"))
- {
- // Allow exceptions from underlength message on vRecv
- printf("ProcessMessage(%s, %d 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, %d bytes) : Exception '%s' caught\n", strCommand.c_str(), nMessageSize, e.what());
- }
- else
- {
- PrintException(&e, "ProcessMessage()");
- }
- }
- catch (std::exception& e) {
- PrintException(&e, "ProcessMessage()");
- } catch (...) {
- PrintException(NULL, "ProcessMessage()");
- }
- if (!fRet)
- printf("ProcessMessage(%s, %d bytes) FAILED\n", strCommand.c_str(), nMessageSize);
- }
- vRecv.Compact();
- return true;
- }
- bool 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;
- string strSubVer;
- 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 >> 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)
- {
- pfrom->fDisconnect = true;
- return true;
- }
- pfrom->fClient = !(pfrom->nServices & NODE_NETWORK);
- if (pfrom->fClient)
- {
- pfrom->vSend.nType |= SER_BLOCKHEADERONLY;
- pfrom->vRecv.nType |= SER_BLOCKHEADERONLY;
- }
- 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));
- // 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));
- }
- 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;
- if (pfrom->nVersion < 200) // don't want addresses from 0.1.5
- return true;
- if (pfrom->nVersion < 209 && mapAddresses.size() > 1000) // don't want addr from 0.2.0 unless seeding
- return true;
- if (vAddr.size() > 1000)
- return error("message addr size() = %d", vAddr.size());
- // Store the new addresses
- foreach(CAddress& addr, vAddr)
- {
- if (fShutdown)
- return true;
- // ignore IPv6 for now, since it isn't implemented anyway
- if (!addr.IsIPv4())
- continue;
- addr.nTime = GetAdjustedTime() - 2 * 60 * 60;
- if (pfrom->fGetAddr || vAddr.size() > 10)
- addr.nTime -= 5 * 24 * 60 * 60;
- AddAddress(addr);
- pfrom->AddAddressKnown(addr);
- if (!pfrom->fGetAddr && addr.IsRoutable())
- {
- // Relay to a limited number of other nodes
- CRITICAL_BLOCK(cs_vNodes)
- {
- // Use deterministic randomness to send to
- // the same places for 12 hours at a time
- static uint256 hashSalt;
- if (hashSalt == 0)
- RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
- uint256 hashRand = addr.ip ^ ((GetTime()+addr.ip)/(12*60*60)) ^ hashSalt;
- multimap<uint256, CNode*> mapMix;
- foreach(CNode* pnode, vNodes)
- mapMix.insert(make_pair(hashRand = Hash(BEGIN(hashRand), END(hashRand)), pnode));
- int nRelayNodes = 4;
- 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");
- 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
- CRITICAL_BLOCK(cs_mapRequestCount)
- {
- map<uint256, int>::iterator mi = mapRequestCount.find(inv.hash);
- if (mi != mapRequestCount.end())
- (*mi).second++;
- }
- }
- }
- else if (strCommand == "getdata")
- {
- vector<CInv> vInv;
- vRecv >> vInv;
- if (vInv.size() > 50000)
- return error("message getdata size() = %d", vInv.size());
- 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())
- {
- //// could optimize this to send header straight from blockindex for client
- CBlock block;
- block.ReadFromDisk((*mi).second, !pfrom->fClient);
- 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
- CRITICAL_BLOCK(cs_mapRequestCount)
- {
- map<uint256, int>::iterator mi = mapRequestCount.find(inv.hash);
- if (mi != mapRequestCount.end())
- (*mi).second++;
- }
- }
- }
- else if (strCommand == "getblocks")
- {
- CBlockLocator locator;
- uint256 hashStop;
- vRecv >> locator >> hashStop;
- // Find the first 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();
- printf("getblocks %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,16).c_str(), nLimit);
- for (; pindex; pindex = pindex->pnext)
- {
- if (pindex->GetBlockHash() == hashStop)
- {
- printf(" getblocks stopping at %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,16).c_str());
- break;
- }
- pfrom->PushInventory(CInv(MSG_BLOCK, pindex->GetBlockHash()));
- if (--nLimit <= 0)
- {
- // 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\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,16).c_str());
- pfrom->hashContinue = pindex->GetBlockHash();
- break;
- }
- }
- }
- 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.AcceptTransaction(true, &fMissingInputs))
- {
- AddToWalletIfMine(tx, NULL);
- 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.AcceptTransaction(true))
- {
- printf(" accepted orphan tx %s\n", inv.hash.ToString().substr(0,6).c_str());
- AddToWalletIfMine(tx, NULL);
- RelayMessage(inv, vMsg);
- mapAlreadyAskedFor.erase(inv);
- vWorkQueue.push_back(inv.hash);
- }
- }
- }
- foreach(uint256 hash, vWorkQueue)
- EraseOrphanTx(hash);
- }
- else if (fMissingInputs)
- {
- printf("storing orphan tx %s\n", inv.hash.ToString().substr(0,6).c_str());
- AddOrphanTx(vMsg);
- }
- }
- else if (strCommand == "block")
- {
- auto_ptr<CBlock> pblock(new CBlock);
- vRecv >> *pblock;
- //// debug print
- printf("received block %s\n", pblock->GetHash().ToString().substr(0,16).c_str());
- // pblock->print();
- CInv inv(MSG_BLOCK, pblock->GetHash());
- pfrom->AddInventoryKnown(inv);
- if (ProcessBlock(pfrom, pblock.release()))
- mapAlreadyAskedFor.erase(inv);
- }
- else if (strCommand == "getaddr")
- {
- // This includes all nodes that are currently online,
- // since they rebroadcast an addr every 24 hours
- pfrom->vAddrToSend.clear();
- int64 nSince = GetAdjustedTime() - 12 * 60 * 60; // in the last 12 hours
- CRITICAL_BLOCK(cs_mapAddresses)
- {
- unsigned int nSize = mapAddresses.size();
- foreach(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
- {
- if (fShutdown)
- return true;
- const CAddress& addr = item.second;
- if (addr.nTime > nSince)
- pfrom->PushAddress(addr);
- }
- }
- }
- else if (strCommand == "checkorder")
- {
- uint256 hashReply;
- CWalletTx order;
- vRecv >> hashReply >> 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] = GenerateNewKey();
- // 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 == "submitorder")
- {
- uint256 hashReply;
- CWalletTx wtxNew;
- vRecv >> hashReply >> wtxNew;
- wtxNew.fFromMe = false;
- // Broadcast
- if (!wtxNew.AcceptWalletTransaction())
- {
- pfrom->PushMessage("reply", hashReply, (int)1);
- return error("submitorder AcceptWalletTransaction() failed, returning error 1");
- }
- wtxNew.fTimeReceivedIsTxTime = true;
- AddToWallet(wtxNew);
- wtxNew.RelayWalletTransaction();
- mapReuseKey.erase(pfrom->addr.ip);
- // Send back confirmation
- pfrom->PushMessage("reply", hashReply, (int)0);
- }
- 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
- {
- // 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 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");
- // Address refresh broadcast
- static int64 nLastRebroadcast;
- if (GetTime() - nLastRebroadcast > 24 * 60 * 60) // every 24 hours
- {
- nLastRebroadcast = GetTime();
- CRITICAL_BLOCK(cs_vNodes)
- {
- foreach(CNode* pnode, vNodes)
- {
- // Periodically clear setAddrKnown to allow refresh broadcasts
- pnode->setAddrKnown.clear();
- // Rebroadcast our address
- if (addrLocalHost.IsRoutable() && !fUseProxy)
- pnode->PushAddress(addrLocalHost);
- }
- }
- }
- // Resend wallet transactions that haven't gotten in a block yet
- ResendWalletTransactions();
- //
- // Message: addr
- //
- if (fSendTrickle)
- {
- vector<CAddress> vAddr;
- vAddr.reserve(pto->vAddrToSend.size());
- 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());
- 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)
- {
- TRY_CRITICAL_BLOCK(cs_mapWallet)
- {
- map<uint256, CWalletTx>::iterator mi = mapWallet.find(inv.hash);
- if (mi != mapWallet.end())
- {
- CWalletTx& wtx = (*mi).second;
- 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
- //
- void GenerateBitcoins(bool fGenerate)
- {
- if (fGenerateBitcoins != fGenerate)
- {
- fGenerateBitcoins = fGenerate;
- CWalletDB().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, NULL))
- printf("Error: CreateThread(ThreadBitcoinMiner) failed\n");
- Sleep(10);
- }
- }
- }
- void ThreadBitcoinMiner(void* parg)
- {
- try
- {
- vnThreadsRunning[3]++;
- BitcoinMiner();
- vnThreadsRunning[3]--;
- }
- catch (std::exception& e) {
- vnThreadsRunning[3]--;
- PrintException(&e, "ThreadBitcoinMiner()");
- } catch (...) {
- vnThreadsRunning[3]--;
- PrintException(NULL, "ThreadBitcoinMiner()");
- }
- UIThreadCall(bind(CalledSetStatusBar, "", 0));
- nHPSTimerStart = 0;
- if (vnThreadsRunning[3] == 0)
- dHashesPerSec = 0;
- printf("ThreadBitcoinMiner exiting, %d threads remaining\n", vnThreadsRunning[3]);
- }
- int 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);
- }
- static const int NPAR = 32;
- extern void Double_BlockSHA256(const void* pin, void* pout, const void* pinit, unsigned int hash[8][NPAR], const void* init2);
- void BitcoinMiner()
- {
- printf("BitcoinMiner started\n");
- SetThreadPriority(THREAD_PRIORITY_LOWEST);
- CKey key;
- key.MakeNewKey();
- CBigNum bnExtraNonce = 0;
- while (fGenerateBitcoins)
- {
- Sleep(50);
- if (fShutdown)
- return;
- while (vNodes.empty() || IsInitialBlockDownload())
- {
- Sleep(1000);
- if (fShutdown)
- return;
- if (!fGenerateBitcoins)
- return;
- }
- unsigned int nTransactionsUpdatedLast = nTransactionsUpdated;
- CBlockIndex* pindexPrev = pindexBest;
- unsigned int nBits = GetNextWorkRequired(pindexPrev);
- //
- // Create coinbase tx
- //
- CTransaction txNew;
- txNew.vin.resize(1);
- txNew.vin[0].prevout.SetNull();
- txNew.vin[0].scriptSig << nBits << ++bnExtraNonce;
- txNew.vout.resize(1);
- txNew.vout[0].scriptPubKey << key.GetPubKey() << OP_CHECKSIG;
- //
- // Create new block
- //
- auto_ptr<CBlock> pblock(new CBlock());
- if (!pblock.get())
- return;
- // Add our coinbase tx as first transaction
- pblock->vtx.push_back(txNew);
- // Collect the latest transactions into the block
- int64 nFees = 0;
- CRITICAL_BLOCK(cs_main)
- CRITICAL_BLOCK(cs_mapTransactions)
- {
- CTxDB txdb("r");
- map<uint256, CTxIndex> mapTestPool;
- vector<char> vfAlreadyAdded(mapTransactions.size());
- bool fFoundSomething = true;
- unsigned int nBlockSize = 0;
- while (fFoundSomething && nBlockSize < MAX_SIZE/2)
- {
- fFoundSomething = false;
- unsigned int n = 0;
- for (map<uint256, CTransaction>::iterator mi = mapTransactions.begin(); mi != mapTransactions.end(); ++mi, ++n)
- {
- if (vfAlreadyAdded[n])
- continue;
- CTransaction& tx = (*mi).second;
- if (tx.IsCoinBase() || !tx.IsFinal())
- continue;
- unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK);
- if (nBlockSize + nTxSize >= MAX_BLOCK_SIZE - 10000)
- continue;
- // Transaction fee based on block size
- int64 nMinFee = tx.GetMinFee(nBlockSize);
- map<uint256, CTxIndex> mapTestPoolTmp(mapTestPool);
- if (!tx.ConnectInputs(txdb, mapTestPoolTmp, CDiskTxPos(1,1,1), pindexPrev, nFees, false, true, nMinFee))
- continue;
- swap(mapTestPool, mapTestPoolTmp);
- pblock->vtx.push_back(tx);
- nBlockSize += nTxSize;
- vfAlreadyAdded[n] = true;
- fFoundSomething = true;
- }
- }
- }
- pblock->nBits = nBits;
- pblock->vtx[0].vout[0].nValue = pblock->GetBlockValue(pindexPrev->nHeight+1, nFees);
- printf("Running BitcoinMiner with %d transactions in block\n", pblock->vtx.size());
- //
- // Prebuild hash buffer
- //
- struct tmpworkspace
- {
- 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];
- };
- char tmpbuf[sizeof(tmpworkspace)+16];
- tmpworkspace& tmp = *(tmpworkspace*)alignup<16>(tmpbuf);
- tmp.block.nVersion = pblock->nVersion;
- tmp.block.hashPrevBlock = pblock->hashPrevBlock = (pindexPrev ? pindexPrev->GetBlockHash() : 0);
- tmp.block.hashMerkleRoot = pblock->hashMerkleRoot = pblock->BuildMerkleTree();
- tmp.block.nTime = pblock->nTime = max((pindexPrev ? pindexPrev->GetMedianTimePast()+1 : 0), GetAdjustedTime());
- tmp.block.nBits = pblock->nBits = nBits;
- tmp.block.nNonce = pblock->nNonce = 0;
- unsigned int nBlocks0 = FormatHashBlocks(&tmp.block, sizeof(tmp.block));
- unsigned int nBlocks1 = 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
- uint256 midstatebuf[2];
- uint256& midstate = *alignup<16>(midstatebuf);
- SHA256Transform(&midstate, &tmp.block, pSHA256InitState);
- //
- // Search
- //
- bool f4WaySSE2 = mapArgs.count("-4way");
- int64 nStart = GetTime();
- uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
- uint256 hashbuf[2];
- uint256& hash = *alignup<16>(hashbuf);
- loop
- {
- #ifdef FOURWAYSSE2
- if (f4WaySSE2)
- {
- // tcatm's 4-way SSE2 SHA-256
- tmp.block.nNonce += NPAR;
- unsigned int thashbuf[9][NPAR];
- unsigned int (&thash)[9][NPAR] = *alignup<16>(&thashbuf);
- Double_BlockSHA256((char*)&tmp.block + 64, &tmp.hash1, &midstate, thash, pSHA256InitState);
- ((unsigned short*)&hash)[14] = 0xffff;
- for (int j = 0; j < NPAR; j++)
- {
- if (thash[7][j] == 0)
- {
- for (int i = 0; i < sizeof(hash)/4; i++)
- ((unsigned int*)&hash)[i] = thash[i][j];
- pblock->nNonce = ByteReverse(tmp.block.nNonce + j);
- }
- }
- }
- else
- #endif
- {
- // Crypto++ SHA-256
- tmp.block.nNonce++;
- SHA256Transform(&tmp.hash1, (char*)&tmp.block + 64, &midstate);
- SHA256Transform(&hash, &tmp.hash1, pSHA256InitState);
- }
- if (((unsigned short*)&hash)[14] == 0)
- {
- // Byte swap the result after preliminary check
- for (int i = 0; i < sizeof(hash)/4; i++)
- ((unsigned int*)&hash)[i] = ByteReverse(((unsigned int*)&hash)[i]);
- if (hash <= hashTarget)
- {
- #ifdef FOURWAYSSE2
- if (!f4WaySSE2)
- #endif
- pblock->nNonce = ByteReverse(tmp.block.nNonce);
- assert(hash == pblock->GetHash());
- //// 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());
- SetThreadPriority(THREAD_PRIORITY_NORMAL);
- CRITICAL_BLOCK(cs_main)
- {
- if (pindexPrev == pindexBest)
- {
- // Save key
- if (!AddKey(key))
- return;
- key.MakeNewKey();
- // Track how many getdata requests this block gets
- CRITICAL_BLOCK(cs_mapRequestCount)
- mapRequestCount[pblock->GetHash()] = 0;
- // Process this block the same as if we had received it from another node
- if (!ProcessBlock(NULL, pblock.release()))
- printf("ERROR in BitcoinMiner, ProcessBlock, block not accepted\n");
- }
- }
- SetThreadPriority(THREAD_PRIORITY_LOWEST);
- Sleep(500);
- break;
- }
- }
- // Update nTime every few seconds
- const unsigned int nMask = 0xffff;
- const int nHashesPerCycle = (nMask+1);
- if ((tmp.block.nNonce & nMask) == 0)
- {
- // Meter hashes/sec
- static int nCycleCounter;
- if (nHPSTimerStart == 0)
- {
- nHPSTimerStart = GetTimeMillis();
- nCycleCounter = 0;
- }
- else
- nCycleCounter++;
- if (GetTimeMillis() - nHPSTimerStart > 4000)
- {
- static CCriticalSection cs;
- CRITICAL_BLOCK(cs)
- {
- if (GetTimeMillis() - nHPSTimerStart > 4000)
- {
- dHashesPerSec = 1000.0 * nHashesPerCycle * nCycleCounter / (GetTimeMillis() - nHPSTimerStart);
- nHPSTimerStart = GetTimeMillis();
- nCycleCounter = 0;
- string strStatus = strprintf(" %.0f khash/s", dHashesPerSec/1000.0);
- UIThreadCall(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 (tmp.block.nNonce == 0)
- break;
- if (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60)
- break;
- if (pindexPrev != pindexBest)
- break;
- pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
- tmp.block.nTime = ByteReverse(pblock->nTime);
- }
- }
- }
- }
- //////////////////////////////////////////////////////////////////////////////
- //
- // Actions
- //
- int64 GetBalance()
- {
- int64 nStart = GetTimeMillis();
- int64 nTotal = 0;
- CRITICAL_BLOCK(cs_mapWallet)
- {
- for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
- {
- CWalletTx* pcoin = &(*it).second;
- if (!pcoin->IsFinal() || pcoin->fSpent)
- continue;
- nTotal += pcoin->GetCredit(true);
- }
- }
- //printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart);
- return nTotal;
- }
- int GetRandInt(int nMax)
- {
- return GetRand(nMax);
- }
- bool SelectCoins(int64 nTargetValue, set<CWalletTx*>& setCoinsRet)
- {
- setCoinsRet.clear();
- // List of values less than target
- int64 nLowestLarger = INT64_MAX;
- CWalletTx* pcoinLowestLarger = NULL;
- vector<pair<int64, CWalletTx*> > vValue;
- int64 nTotalLower = 0;
- CRITICAL_BLOCK(cs_mapWallet)
- {
- vector<CWalletTx*> vCoins;
- vCoins.reserve(mapWallet.size());
- for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
- vCoins.push_back(&(*it).second);
- random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
- foreach(CWalletTx* pcoin, vCoins)
- {
- if (!pcoin->IsFinal() || pcoin->fSpent)
- continue;
- int64 n = pcoin->GetCredit();
- if (n <= 0)
- continue;
- if (n < nTargetValue)
- {
- vValue.push_back(make_pair(n, pcoin));
- nTotalLower += n;
- }
- else if (n == nTargetValue)
- {
- setCoinsRet.insert(pcoin);
- return true;
- }
- else if (n < nLowestLarger)
- {
- nLowestLarger = n;
- pcoinLowestLarger = pcoin;
- }
- }
- }
- if (nTotalLower < nTargetValue)
- {
- if (pcoinLowestLarger == NULL)
- return false;
- setCoinsRet.insert(pcoinLowestLarger);
- return true;
- }
- // Solve subset sum by stochastic approximation
- sort(vValue.rbegin(), vValue.rend());
- vector<char> vfIncluded;
- vector<char> vfBest(vValue.size(), true);
- int64 nBest = nTotalLower;
- for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
- {
- vfIncluded.assign(vValue.size(), false);
- int64 nTotal = 0;
- bool fReachedTarget = false;
- for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
- {
- for (int i = 0; i < vValue.size(); i++)
- {
- if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
- {
- nTotal += vValue[i].first;
- vfIncluded[i] = true;
- if (nTotal >= nTargetValue)
- {
- fReachedTarget = true;
- if (nTotal < nBest)
- {
- nBest = nTotal;
- vfBest = vfIncluded;
- }
- nTotal -= vValue[i].first;
- vfIncluded[i] = false;
- }
- }
- }
- }
- }
- // If the next larger is still closer, return it
- if (pcoinLowestLarger && nLowestLarger - nTargetValue <= nBest - nTargetValue)
- setCoinsRet.insert(pcoinLowestLarger);
- else
- {
- for (int i = 0; i < vValue.size(); i++)
- if (vfBest[i])
- setCoinsRet.insert(vValue[i].second);
- //// debug print
- printf("SelectCoins() best subset: ");
- for (int i = 0; i < vValue.size(); i++)
- if (vfBest[i])
- printf("%s ", FormatMoney(vValue[i].first).c_str());
- printf("total %s\n", FormatMoney(nBest).c_str());
- }
- return true;
- }
- bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CKey& keyRet, int64& nFeeRequiredRet)
- {
- nFeeRequiredRet = 0;
- CRITICAL_BLOCK(cs_main)
- {
- // txdb must be opened before the mapWallet lock
- CTxDB txdb("r");
- CRITICAL_BLOCK(cs_mapWallet)
- {
- int64 nFee = nTransactionFee;
- loop
- {
- wtxNew.vin.clear();
- wtxNew.vout.clear();
- wtxNew.fFromMe = true;
- if (nValue < 0)
- return false;
- int64 nValueOut = nValue;
- int64 nTotalValue = nValue + nFee;
- // Choose coins to use
- set<CWalletTx*> setCoins;
- if (!SelectCoins(nTotalValue, setCoins))
- return false;
- int64 nValueIn = 0;
- foreach(CWalletTx* pcoin, setCoins)
- nValueIn += pcoin->GetCredit();
- // Fill a vout to the payee
- bool fChangeFirst = GetRand(2);
- if (!fChangeFirst)
- wtxNew.vout.push_back(CTxOut(nValueOut, scriptPubKey));
- // Fill a vout back to self with any change
- if (nValueIn > nTotalValue)
- {
- // Note: We use a new key here to keep it from being obvious which side is the change.
- // The drawback is that by not reusing a previous key, the change may be lost if a
- // backup is restored, if the backup doesn't have the new private key for the change.
- // If we reused the old key, it would be possible to add code to look for and
- // rediscover unknown transactions that were written with keys of ours to recover
- // post-backup change.
- // New private key
- if (keyRet.IsNull())
- keyRet.MakeNewKey();
- // Fill a vout to ourself, using same address type as the payment
- CScript scriptChange;
- if (scriptPubKey.GetBitcoinAddressHash160() != 0)
- scriptChange.SetBitcoinAddress(keyRet.GetPubKey());
- else
- scriptChange << keyRet.GetPubKey() << OP_CHECKSIG;
- wtxNew.vout.push_back(CTxOut(nValueIn - nTotalValue, scriptChange));
- }
- // Fill a vout to the payee
- if (fChangeFirst)
- wtxNew.vout.push_back(CTxOut(nValueOut, scriptPubKey));
- // Fill vin
- foreach(CWalletTx* pcoin, setCoins)
- for (int nOut = 0; nOut < pcoin->vout.size(); nOut++)
- if (pcoin->vout[nOut].IsMine())
- wtxNew.vin.push_back(CTxIn(pcoin->GetHash(), nOut));
- // Sign
- int nIn = 0;
- foreach(CWalletTx* pcoin, setCoins)
- for (int nOut = 0; nOut < pcoin->vout.size(); nOut++)
- if (pcoin->vout[nOut].IsMine())
- if (!SignSignature(*pcoin, wtxNew, nIn++))
- return false;
- // Check that enough fee is included
- if (nFee < wtxNew.GetMinFee())
- {
- nFee = nFeeRequiredRet = wtxNew.GetMinFee();
- continue;
- }
- // Fill vtxPrev by copying from previous transactions vtxPrev
- wtxNew.AddSupportingTransactions(txdb);
- wtxNew.fTimeReceivedIsTxTime = true;
- break;
- }
- }
- }
- return true;
- }
- // Call after CreateTransaction unless you want to abort
- bool CommitTransaction(CWalletTx& wtxNew, const CKey& key)
- {
- CRITICAL_BLOCK(cs_main)
- {
- printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
- CRITICAL_BLOCK(cs_mapWallet)
- {
- // This is only to keep the database open to defeat the auto-flush for the
- // duration of this scope. This is the only place where this optimization
- // maybe makes sense; please don't do it anywhere else.
- CWalletDB walletdb("r");
- // Add the change's private key to wallet
- if (!key.IsNull() && !AddKey(key))
- throw runtime_error("CommitTransaction() : AddKey failed\n");
- // Add tx to wallet, because if it has change it's also ours,
- // otherwise just for transaction history.
- AddToWallet(wtxNew);
- // Mark old coins as spent
- set<CWalletTx*> setCoins;
- foreach(const CTxIn& txin, wtxNew.vin)
- setCoins.insert(&mapWallet[txin.prevout.hash]);
- foreach(CWalletTx* pcoin, setCoins)
- {
- pcoin->fSpent = true;
- pcoin->WriteToDisk();
- vWalletUpdated.push_back(pcoin->GetHash());
- }
- }
- // Track how many getdata requests our transaction gets
- CRITICAL_BLOCK(cs_mapRequestCount)
- mapRequestCount[wtxNew.GetHash()] = 0;
- // Broadcast
- if (!wtxNew.AcceptTransaction())
- {
- // This must not fail. The transaction has already been signed and recorded.
- printf("CommitTransaction() : Error: Transaction not valid");
- return false;
- }
- wtxNew.RelayWalletTransaction();
- }
- MainFrameRepaint();
- return true;
- }
- string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
- {
- CRITICAL_BLOCK(cs_main)
- {
- CKey key;
- int64 nFeeRequired;
- if (!CreateTransaction(scriptPubKey, nValue, wtxNew, key, nFeeRequired))
- {
- string strError;
- if (nValue + nFeeRequired > GetBalance())
- strError = strprintf(_("Error: This is an oversized transaction that requires a transaction fee of %s "), FormatMoney(nFeeRequired).c_str());
- else
- strError = _("Error: Transaction creation failed ");
- printf("SendMoney() : %s", strError.c_str());
- return strError;
- }
- if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
- return "ABORTED";
- if (!CommitTransaction(wtxNew, key))
- return _("Error: The transaction was rejected. This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here.");
- }
- MainFrameRepaint();
- return "";
- }
- string SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
- {
- // Check amount
- if (nValue <= 0)
- return _("Invalid amount");
- if (nValue + nTransactionFee > GetBalance())
- return _("Insufficient funds");
- // Parse bitcoin address
- CScript scriptPubKey;
- if (!scriptPubKey.SetBitcoinAddress(strAddress))
- return _("Invalid bitcoin address");
- return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
- }
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