1 // Copyright (c) 2009-2010 Satoshi Nakamoto
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2 // Distributed under the MIT/X11 software license, see the accompanying
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3 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
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6 #include "cryptopp/sha.h"
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16 CCriticalSection cs_main;
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18 map<uint256, CTransaction> mapTransactions;
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19 CCriticalSection cs_mapTransactions;
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20 unsigned int nTransactionsUpdated = 0;
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21 map<COutPoint, CInPoint> mapNextTx;
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23 map<uint256, CBlockIndex*> mapBlockIndex;
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24 const uint256 hashGenesisBlock("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f");
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25 CBlockIndex* pindexGenesisBlock = NULL;
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26 int nBestHeight = -1;
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27 CBigNum bnBestChainWork = 0;
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28 CBigNum bnBestInvalidWork = 0;
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29 uint256 hashBestChain = 0;
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30 CBlockIndex* pindexBest = NULL;
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31 int64 nTimeBestReceived = 0;
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33 map<uint256, CBlock*> mapOrphanBlocks;
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34 multimap<uint256, CBlock*> mapOrphanBlocksByPrev;
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36 map<uint256, CDataStream*> mapOrphanTransactions;
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37 multimap<uint256, CDataStream*> mapOrphanTransactionsByPrev;
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39 map<uint256, CWalletTx> mapWallet;
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40 vector<uint256> vWalletUpdated;
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41 CCriticalSection cs_mapWallet;
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43 map<vector<unsigned char>, CPrivKey> mapKeys;
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44 map<uint160, vector<unsigned char> > mapPubKeys;
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45 CCriticalSection cs_mapKeys;
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48 map<uint256, int> mapRequestCount;
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49 CCriticalSection cs_mapRequestCount;
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51 map<string, string> mapAddressBook;
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52 CCriticalSection cs_mapAddressBook;
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54 vector<unsigned char> vchDefaultKey;
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56 double dHashesPerSec;
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57 int64 nHPSTimerStart;
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60 int fGenerateBitcoins = false;
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61 int64 nTransactionFee = 0;
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62 CAddress addrIncoming;
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63 int fLimitProcessors = false;
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64 int nLimitProcessors = 1;
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65 int fMinimizeToTray = true;
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66 int fMinimizeOnClose = true;
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73 //////////////////////////////////////////////////////////////////////////////
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78 bool AddKey(const CKey& key)
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80 CRITICAL_BLOCK(cs_mapKeys)
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82 mapKeys[key.GetPubKey()] = key.GetPrivKey();
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83 mapPubKeys[Hash160(key.GetPubKey())] = key.GetPubKey();
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85 return CWalletDB().WriteKey(key.GetPubKey(), key.GetPrivKey());
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88 vector<unsigned char> GenerateNewKey()
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90 RandAddSeedPerfmon();
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94 throw runtime_error("GenerateNewKey() : AddKey failed\n");
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95 return key.GetPubKey();
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101 //////////////////////////////////////////////////////////////////////////////
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106 bool AddToWallet(const CWalletTx& wtxIn)
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108 uint256 hash = wtxIn.GetHash();
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109 CRITICAL_BLOCK(cs_mapWallet)
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111 // Inserts only if not already there, returns tx inserted or tx found
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112 pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
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113 CWalletTx& wtx = (*ret.first).second;
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114 bool fInsertedNew = ret.second;
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116 wtx.nTimeReceived = GetAdjustedTime();
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118 bool fUpdated = false;
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122 if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
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124 wtx.hashBlock = wtxIn.hashBlock;
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127 if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
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129 wtx.vMerkleBranch = wtxIn.vMerkleBranch;
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130 wtx.nIndex = wtxIn.nIndex;
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133 if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
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135 wtx.fFromMe = wtxIn.fFromMe;
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138 if (wtxIn.fSpent && wtxIn.fSpent != wtx.fSpent)
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140 wtx.fSpent = wtxIn.fSpent;
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146 printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().substr(0,6).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
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149 if (fInsertedNew || fUpdated)
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150 if (!wtx.WriteToDisk())
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153 // If default receiving address gets used, replace it with a new one
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154 CScript scriptDefaultKey;
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155 scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);
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156 foreach(const CTxOut& txout, wtx.vout)
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158 if (txout.scriptPubKey == scriptDefaultKey)
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160 CWalletDB walletdb;
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161 walletdb.WriteDefaultKey(GenerateNewKey());
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162 walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
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167 vWalletUpdated.push_back(hash);
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171 MainFrameRepaint();
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175 bool AddToWalletIfMine(const CTransaction& tx, const CBlock* pblock)
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177 if (tx.IsMine() || mapWallet.count(tx.GetHash()))
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180 // Get merkle branch if transaction was found in a block
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182 wtx.SetMerkleBranch(pblock);
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183 return AddToWallet(wtx);
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188 bool EraseFromWallet(uint256 hash)
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190 CRITICAL_BLOCK(cs_mapWallet)
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192 if (mapWallet.erase(hash))
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193 CWalletDB().EraseTx(hash);
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198 void WalletUpdateSpent(const COutPoint& prevout)
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200 // Anytime a signature is successfully verified, it's proof the outpoint is spent.
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201 // Update the wallet spent flag if it doesn't know due to wallet.dat being
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202 // restored from backup or the user making copies of wallet.dat.
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203 CRITICAL_BLOCK(cs_mapWallet)
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205 map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
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206 if (mi != mapWallet.end())
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208 CWalletTx& wtx = (*mi).second;
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209 if (!wtx.fSpent && wtx.vout[prevout.n].IsMine())
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211 printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
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214 vWalletUpdated.push_back(prevout.hash);
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227 //////////////////////////////////////////////////////////////////////////////
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229 // mapOrphanTransactions
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232 void AddOrphanTx(const CDataStream& vMsg)
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235 CDataStream(vMsg) >> tx;
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236 uint256 hash = tx.GetHash();
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237 if (mapOrphanTransactions.count(hash))
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239 CDataStream* pvMsg = mapOrphanTransactions[hash] = new CDataStream(vMsg);
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240 foreach(const CTxIn& txin, tx.vin)
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241 mapOrphanTransactionsByPrev.insert(make_pair(txin.prevout.hash, pvMsg));
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244 void EraseOrphanTx(uint256 hash)
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246 if (!mapOrphanTransactions.count(hash))
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248 const CDataStream* pvMsg = mapOrphanTransactions[hash];
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250 CDataStream(*pvMsg) >> tx;
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251 foreach(const CTxIn& txin, tx.vin)
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253 for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(txin.prevout.hash);
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254 mi != mapOrphanTransactionsByPrev.upper_bound(txin.prevout.hash);)
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256 if ((*mi).second == pvMsg)
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257 mapOrphanTransactionsByPrev.erase(mi++);
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263 mapOrphanTransactions.erase(hash);
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273 //////////////////////////////////////////////////////////////////////////////
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278 bool CTxIn::IsMine() const
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280 CRITICAL_BLOCK(cs_mapWallet)
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282 map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
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283 if (mi != mapWallet.end())
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285 const CWalletTx& prev = (*mi).second;
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286 if (prevout.n < prev.vout.size())
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287 if (prev.vout[prevout.n].IsMine())
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294 int64 CTxIn::GetDebit() const
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296 CRITICAL_BLOCK(cs_mapWallet)
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298 map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
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299 if (mi != mapWallet.end())
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301 const CWalletTx& prev = (*mi).second;
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302 if (prevout.n < prev.vout.size())
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303 if (prev.vout[prevout.n].IsMine())
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304 return prev.vout[prevout.n].nValue;
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310 int64 CWalletTx::GetTxTime() const
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312 if (!fTimeReceivedIsTxTime && hashBlock != 0)
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314 // If we did not receive the transaction directly, we rely on the block's
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315 // time to figure out when it happened. We use the median over a range
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316 // of blocks to try to filter out inaccurate block times.
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317 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
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318 if (mi != mapBlockIndex.end())
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320 CBlockIndex* pindex = (*mi).second;
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322 return pindex->GetMedianTime();
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325 return nTimeReceived;
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328 int CWalletTx::GetRequestCount() const
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330 // Returns -1 if it wasn't being tracked
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331 int nRequests = -1;
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332 CRITICAL_BLOCK(cs_mapRequestCount)
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337 if (hashBlock != 0)
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339 map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);
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340 if (mi != mapRequestCount.end())
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341 nRequests = (*mi).second;
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346 // Did anyone request this transaction?
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347 map<uint256, int>::iterator mi = mapRequestCount.find(GetHash());
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348 if (mi != mapRequestCount.end())
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350 nRequests = (*mi).second;
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352 // How about the block it's in?
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353 if (nRequests == 0 && hashBlock != 0)
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355 map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);
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356 if (mi != mapRequestCount.end())
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357 nRequests = (*mi).second;
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359 nRequests = 1; // If it's in someone else's block it must have got out
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370 int CMerkleTx::SetMerkleBranch(const CBlock* pblock)
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374 if (hashBlock == 0)
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380 if (pblock == NULL)
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382 // Load the block this tx is in
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384 if (!CTxDB("r").ReadTxIndex(GetHash(), txindex))
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386 if (!blockTmp.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos))
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388 pblock = &blockTmp;
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391 // Update the tx's hashBlock
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392 hashBlock = pblock->GetHash();
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394 // Locate the transaction
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395 for (nIndex = 0; nIndex < pblock->vtx.size(); nIndex++)
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396 if (pblock->vtx[nIndex] == *(CTransaction*)this)
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398 if (nIndex == pblock->vtx.size())
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400 vMerkleBranch.clear();
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402 printf("ERROR: SetMerkleBranch() : couldn't find tx in block\n");
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406 // Fill in merkle branch
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407 vMerkleBranch = pblock->GetMerkleBranch(nIndex);
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410 // Is the tx in a block that's in the main chain
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411 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
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412 if (mi == mapBlockIndex.end())
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414 CBlockIndex* pindex = (*mi).second;
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415 if (!pindex || !pindex->IsInMainChain())
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418 return pindexBest->nHeight - pindex->nHeight + 1;
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423 void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
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427 const int COPY_DEPTH = 3;
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428 if (SetMerkleBranch() < COPY_DEPTH)
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430 vector<uint256> vWorkQueue;
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431 foreach(const CTxIn& txin, vin)
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432 vWorkQueue.push_back(txin.prevout.hash);
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434 // This critsect is OK because txdb is already open
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435 CRITICAL_BLOCK(cs_mapWallet)
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437 map<uint256, const CMerkleTx*> mapWalletPrev;
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438 set<uint256> setAlreadyDone;
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439 for (int i = 0; i < vWorkQueue.size(); i++)
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441 uint256 hash = vWorkQueue[i];
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442 if (setAlreadyDone.count(hash))
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444 setAlreadyDone.insert(hash);
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447 if (mapWallet.count(hash))
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449 tx = mapWallet[hash];
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450 foreach(const CMerkleTx& txWalletPrev, mapWallet[hash].vtxPrev)
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451 mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
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453 else if (mapWalletPrev.count(hash))
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455 tx = *mapWalletPrev[hash];
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457 else if (!fClient && txdb.ReadDiskTx(hash, tx))
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463 printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
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467 int nDepth = tx.SetMerkleBranch();
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468 vtxPrev.push_back(tx);
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470 if (nDepth < COPY_DEPTH)
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471 foreach(const CTxIn& txin, tx.vin)
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472 vWorkQueue.push_back(txin.prevout.hash);
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477 reverse(vtxPrev.begin(), vtxPrev.end());
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490 bool CTransaction::AcceptTransaction(CTxDB& txdb, bool fCheckInputs, bool* pfMissingInputs)
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492 if (pfMissingInputs)
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493 *pfMissingInputs = false;
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495 // Coinbase is only valid in a block, not as a loose transaction
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497 return error("AcceptTransaction() : coinbase as individual tx");
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499 if (!CheckTransaction())
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500 return error("AcceptTransaction() : CheckTransaction failed");
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502 // To help v0.1.5 clients who would see it as a negative number
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503 if ((int64)nLockTime > INT_MAX)
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504 return error("AcceptTransaction() : not accepting nLockTime beyond 2038 yet");
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506 // Do we already have it?
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507 uint256 hash = GetHash();
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508 CRITICAL_BLOCK(cs_mapTransactions)
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509 if (mapTransactions.count(hash))
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512 if (txdb.ContainsTx(hash))
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515 // Check for conflicts with in-memory transactions
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516 CTransaction* ptxOld = NULL;
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517 for (int i = 0; i < vin.size(); i++)
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519 COutPoint outpoint = vin[i].prevout;
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520 if (mapNextTx.count(outpoint))
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522 // Disable replacement feature for now
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525 // Allow replacing with a newer version of the same transaction
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528 ptxOld = mapNextTx[outpoint].ptx;
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529 if (!IsNewerThan(*ptxOld))
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531 for (int i = 0; i < vin.size(); i++)
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533 COutPoint outpoint = vin[i].prevout;
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534 if (!mapNextTx.count(outpoint) || mapNextTx[outpoint].ptx != ptxOld)
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541 // Check against previous transactions
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542 map<uint256, CTxIndex> mapUnused;
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544 if (fCheckInputs && !ConnectInputs(txdb, mapUnused, CDiskTxPos(1,1,1), pindexBest, nFees, false, false))
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546 if (pfMissingInputs)
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547 *pfMissingInputs = true;
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548 return error("AcceptTransaction() : ConnectInputs failed %s", hash.ToString().substr(0,6).c_str());
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551 // Store transaction in memory
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552 CRITICAL_BLOCK(cs_mapTransactions)
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556 printf("AcceptTransaction() : replacing tx %s with new version\n", ptxOld->GetHash().ToString().c_str());
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557 ptxOld->RemoveFromMemoryPool();
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562 ///// are we sure this is ok when loading transactions or restoring block txes
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563 // If updated, erase old tx from wallet
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565 EraseFromWallet(ptxOld->GetHash());
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567 printf("AcceptTransaction(): accepted %s\n", hash.ToString().substr(0,6).c_str());
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572 bool CTransaction::AddToMemoryPool()
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574 // Add to memory pool without checking anything. Don't call this directly,
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575 // call AcceptTransaction to properly check the transaction first.
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576 CRITICAL_BLOCK(cs_mapTransactions)
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578 uint256 hash = GetHash();
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579 mapTransactions[hash] = *this;
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580 for (int i = 0; i < vin.size(); i++)
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581 mapNextTx[vin[i].prevout] = CInPoint(&mapTransactions[hash], i);
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582 nTransactionsUpdated++;
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588 bool CTransaction::RemoveFromMemoryPool()
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590 // Remove transaction from memory pool
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591 CRITICAL_BLOCK(cs_mapTransactions)
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593 foreach(const CTxIn& txin, vin)
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594 mapNextTx.erase(txin.prevout);
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595 mapTransactions.erase(GetHash());
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596 nTransactionsUpdated++;
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606 int CMerkleTx::GetDepthInMainChain(int& nHeightRet) const
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608 if (hashBlock == 0 || nIndex == -1)
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611 // Find the block it claims to be in
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612 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
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613 if (mi == mapBlockIndex.end())
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615 CBlockIndex* pindex = (*mi).second;
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616 if (!pindex || !pindex->IsInMainChain())
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619 // Make sure the merkle branch connects to this block
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620 if (!fMerkleVerified)
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622 if (CBlock::CheckMerkleBranch(GetHash(), vMerkleBranch, nIndex) != pindex->hashMerkleRoot)
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624 fMerkleVerified = true;
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627 nHeightRet = pindex->nHeight;
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628 return pindexBest->nHeight - pindex->nHeight + 1;
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632 int CMerkleTx::GetBlocksToMaturity() const
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636 return max(0, (COINBASE_MATURITY+20) - GetDepthInMainChain());
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640 bool CMerkleTx::AcceptTransaction(CTxDB& txdb, bool fCheckInputs)
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644 if (!IsInMainChain() && !ClientConnectInputs())
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646 return CTransaction::AcceptTransaction(txdb, false);
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650 return CTransaction::AcceptTransaction(txdb, fCheckInputs);
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656 bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)
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658 CRITICAL_BLOCK(cs_mapTransactions)
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660 foreach(CMerkleTx& tx, vtxPrev)
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662 if (!tx.IsCoinBase())
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664 uint256 hash = tx.GetHash();
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665 if (!mapTransactions.count(hash) && !txdb.ContainsTx(hash))
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666 tx.AcceptTransaction(txdb, fCheckInputs);
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670 return AcceptTransaction(txdb, fCheckInputs);
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675 void ReacceptWalletTransactions()
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678 CRITICAL_BLOCK(cs_mapWallet)
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680 foreach(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
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682 CWalletTx& wtx = item.second;
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683 if (wtx.fSpent && wtx.IsCoinBase())
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687 if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
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689 // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
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692 if (txindex.vSpent.size() != wtx.vout.size())
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694 printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
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697 for (int i = 0; i < txindex.vSpent.size(); i++)
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699 if (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())
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701 printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
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711 // Reaccept any txes of ours that aren't already in a block
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712 if (!wtx.IsCoinBase())
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713 wtx.AcceptWalletTransaction(txdb, false);
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720 void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
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722 foreach(const CMerkleTx& tx, vtxPrev)
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724 if (!tx.IsCoinBase())
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726 uint256 hash = tx.GetHash();
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727 if (!txdb.ContainsTx(hash))
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728 RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
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733 uint256 hash = GetHash();
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734 if (!txdb.ContainsTx(hash))
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736 printf("Relaying wtx %s\n", hash.ToString().substr(0,6).c_str());
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737 RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
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742 void ResendWalletTransactions()
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744 // Do this infrequently and randomly to avoid giving away
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745 // that these are our transactions.
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746 static int64 nNextTime;
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747 if (GetTime() < nNextTime)
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749 bool fFirst = (nNextTime == 0);
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750 nNextTime = GetTime() + GetRand(30 * 60);
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754 // Only do it if there's been a new block since last time
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755 static int64 nLastTime;
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756 if (nTimeBestReceived < nLastTime)
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758 nLastTime = GetTime();
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760 // Rebroadcast any of our txes that aren't in a block yet
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761 printf("ResendWalletTransactions()\n");
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763 CRITICAL_BLOCK(cs_mapWallet)
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765 // Sort them in chronological order
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766 multimap<unsigned int, CWalletTx*> mapSorted;
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767 foreach(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
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769 CWalletTx& wtx = item.second;
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770 // Don't rebroadcast until it's had plenty of time that
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771 // it should have gotten in already by now.
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772 if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
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773 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
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775 foreach(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
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777 CWalletTx& wtx = *item.second;
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778 wtx.RelayWalletTransaction(txdb);
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792 //////////////////////////////////////////////////////////////////////////////
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794 // CBlock and CBlockIndex
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797 bool CBlock::ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions)
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799 if (!ReadFromDisk(pindex->nFile, pindex->nBlockPos, fReadTransactions))
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801 if (GetHash() != pindex->GetBlockHash())
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802 return error("CBlock::ReadFromDisk() : GetHash() doesn't match index");
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806 uint256 GetOrphanRoot(const CBlock* pblock)
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808 // Work back to the first block in the orphan chain
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809 while (mapOrphanBlocks.count(pblock->hashPrevBlock))
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810 pblock = mapOrphanBlocks[pblock->hashPrevBlock];
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811 return pblock->GetHash();
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814 int64 CBlock::GetBlockValue(int nHeight, int64 nFees) const
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816 int64 nSubsidy = 50 * COIN;
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818 // Subsidy is cut in half every 4 years
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819 nSubsidy >>= (nHeight / 210000);
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821 return nSubsidy + nFees;
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824 unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast)
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826 const int64 nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
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827 const int64 nTargetSpacing = 10 * 60;
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828 const int64 nInterval = nTargetTimespan / nTargetSpacing;
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831 if (pindexLast == NULL)
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832 return bnProofOfWorkLimit.GetCompact();
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834 // Only change once per interval
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835 if ((pindexLast->nHeight+1) % nInterval != 0)
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836 return pindexLast->nBits;
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838 // Go back by what we want to be 14 days worth of blocks
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839 const CBlockIndex* pindexFirst = pindexLast;
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840 for (int i = 0; pindexFirst && i < nInterval-1; i++)
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841 pindexFirst = pindexFirst->pprev;
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842 assert(pindexFirst);
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844 // Limit adjustment step
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845 int64 nActualTimespan = pindexLast->GetBlockTime() - pindexFirst->GetBlockTime();
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846 printf(" nActualTimespan = %"PRI64d" before bounds\n", nActualTimespan);
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847 if (nActualTimespan < nTargetTimespan/4)
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848 nActualTimespan = nTargetTimespan/4;
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849 if (nActualTimespan > nTargetTimespan*4)
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850 nActualTimespan = nTargetTimespan*4;
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854 bnNew.SetCompact(pindexLast->nBits);
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855 bnNew *= nActualTimespan;
\r
856 bnNew /= nTargetTimespan;
\r
858 if (bnNew > bnProofOfWorkLimit)
\r
859 bnNew = bnProofOfWorkLimit;
\r
862 printf("GetNextWorkRequired RETARGET\n");
\r
863 printf("nTargetTimespan = %"PRI64d" nActualTimespan = %"PRI64d"\n", nTargetTimespan, nActualTimespan);
\r
864 printf("Before: %08x %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString().c_str());
\r
865 printf("After: %08x %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString().c_str());
\r
867 return bnNew.GetCompact();
\r
870 bool CheckProofOfWork(uint256 hash, unsigned int nBits)
\r
873 bnTarget.SetCompact(nBits);
\r
876 if (bnTarget <= 0 || bnTarget > bnProofOfWorkLimit)
\r
877 return error("CheckProofOfWork() : nBits below minimum work");
\r
879 // Check proof of work matches claimed amount
\r
880 if (hash > bnTarget.getuint256())
\r
881 return error("CheckProofOfWork() : hash doesn't match nBits");
\r
886 bool IsInitialBlockDownload()
\r
888 if (pindexBest == NULL)
\r
890 static int64 nLastUpdate;
\r
891 static CBlockIndex* pindexLastBest;
\r
892 if (pindexBest != pindexLastBest)
\r
894 pindexLastBest = pindexBest;
\r
895 nLastUpdate = GetTime();
\r
897 return (GetTime() - nLastUpdate < 10 &&
\r
898 pindexBest->GetBlockTime() < GetTime() - 24 * 60 * 60);
\r
905 return (bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6);
\r
908 void Lockdown(CBlockIndex* pindexNew)
\r
910 if (pindexNew->bnChainWork > bnBestInvalidWork)
\r
912 bnBestInvalidWork = pindexNew->bnChainWork;
\r
913 CTxDB().WriteBestInvalidWork(bnBestInvalidWork);
\r
914 MainFrameRepaint();
\r
916 printf("Lockdown: invalid block=%s height=%d work=%s\n", pindexNew->GetBlockHash().ToString().substr(0,20).c_str(), pindexNew->nHeight, pindexNew->bnChainWork.ToString().c_str());
\r
917 printf("Lockdown: current best=%s height=%d work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
\r
918 printf("Lockdown: IsLockdown()=%d\n", (IsLockdown() ? 1 : 0));
\r
920 printf("Lockdown: WARNING: Displayed transactions may not be correct! You may need to upgrade, or other nodes may need to upgrade.\n");
\r
930 bool CTransaction::DisconnectInputs(CTxDB& txdb)
\r
932 // Relinquish previous transactions' spent pointers
\r
935 foreach(const CTxIn& txin, vin)
\r
937 COutPoint prevout = txin.prevout;
\r
939 // Get prev txindex from disk
\r
941 if (!txdb.ReadTxIndex(prevout.hash, txindex))
\r
942 return error("DisconnectInputs() : ReadTxIndex failed");
\r
944 if (prevout.n >= txindex.vSpent.size())
\r
945 return error("DisconnectInputs() : prevout.n out of range");
\r
947 // Mark outpoint as not spent
\r
948 txindex.vSpent[prevout.n].SetNull();
\r
951 txdb.UpdateTxIndex(prevout.hash, txindex);
\r
955 // Remove transaction from index
\r
956 if (!txdb.EraseTxIndex(*this))
\r
957 return error("DisconnectInputs() : EraseTxPos failed");
\r
963 bool CTransaction::ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPool, CDiskTxPos posThisTx,
\r
964 CBlockIndex* pindexBlock, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee)
\r
966 // Take over previous transactions' spent pointers
\r
969 int64 nValueIn = 0;
\r
970 for (int i = 0; i < vin.size(); i++)
\r
972 COutPoint prevout = vin[i].prevout;
\r
976 bool fFound = true;
\r
977 if (fMiner && mapTestPool.count(prevout.hash))
\r
979 // Get txindex from current proposed changes
\r
980 txindex = mapTestPool[prevout.hash];
\r
984 // Read txindex from txdb
\r
985 fFound = txdb.ReadTxIndex(prevout.hash, txindex);
\r
987 if (!fFound && (fBlock || fMiner))
\r
988 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());
\r
991 CTransaction txPrev;
\r
992 if (!fFound || txindex.pos == CDiskTxPos(1,1,1))
\r
994 // Get prev tx from single transactions in memory
\r
995 CRITICAL_BLOCK(cs_mapTransactions)
\r
997 if (!mapTransactions.count(prevout.hash))
\r
998 return error("ConnectInputs() : %s mapTransactions prev not found %s", GetHash().ToString().substr(0,6).c_str(), prevout.hash.ToString().substr(0,6).c_str());
\r
999 txPrev = mapTransactions[prevout.hash];
\r
1002 txindex.vSpent.resize(txPrev.vout.size());
\r
1006 // Get prev tx from disk
\r
1007 if (!txPrev.ReadFromDisk(txindex.pos))
\r
1008 return error("ConnectInputs() : %s ReadFromDisk prev tx %s failed", GetHash().ToString().substr(0,6).c_str(), prevout.hash.ToString().substr(0,6).c_str());
\r
1011 if (prevout.n >= txPrev.vout.size() || prevout.n >= txindex.vSpent.size())
\r
1012 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());
\r
1014 // If prev is coinbase, check that it's matured
\r
1015 if (txPrev.IsCoinBase())
\r
1016 for (CBlockIndex* pindex = pindexBlock; pindex && pindexBlock->nHeight - pindex->nHeight < COINBASE_MATURITY; pindex = pindex->pprev)
\r
1017 if (pindex->nBlockPos == txindex.pos.nBlockPos && pindex->nFile == txindex.pos.nFile)
\r
1018 return error("ConnectInputs() : tried to spend coinbase at depth %d", pindexBlock->nHeight - pindex->nHeight);
\r
1020 // Verify signature
\r
1021 if (!VerifySignature(txPrev, *this, i))
\r
1022 return error("ConnectInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,6).c_str());
\r
1024 // Check for conflicts
\r
1025 if (!txindex.vSpent[prevout.n].IsNull())
\r
1026 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());
\r
1028 // Mark outpoints as spent
\r
1029 txindex.vSpent[prevout.n] = posThisTx;
\r
1033 txdb.UpdateTxIndex(prevout.hash, txindex);
\r
1035 mapTestPool[prevout.hash] = txindex;
\r
1037 nValueIn += txPrev.vout[prevout.n].nValue;
\r
1039 // Check for negative or overflow input values
\r
1040 if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
\r
1041 return error("ConnectInputs() : txin values out of range");
\r
1044 if (nValueIn < GetValueOut())
\r
1045 return error("ConnectInputs() : %s value in < value out", GetHash().ToString().substr(0,6).c_str());
\r
1047 // Tally transaction fees
\r
1048 int64 nTxFee = nValueIn - GetValueOut();
\r
1050 return error("ConnectInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,6).c_str());
\r
1051 if (nTxFee < nMinFee)
\r
1058 // Add transaction to disk index
\r
1059 if (!txdb.AddTxIndex(*this, posThisTx, pindexBlock->nHeight))
\r
1060 return error("ConnectInputs() : AddTxPos failed");
\r
1064 // Add transaction to test pool
\r
1065 mapTestPool[GetHash()] = CTxIndex(CDiskTxPos(1,1,1), vout.size());
\r
1072 bool CTransaction::ClientConnectInputs()
\r
1077 // Take over previous transactions' spent pointers
\r
1078 CRITICAL_BLOCK(cs_mapTransactions)
\r
1080 int64 nValueIn = 0;
\r
1081 for (int i = 0; i < vin.size(); i++)
\r
1083 // Get prev tx from single transactions in memory
\r
1084 COutPoint prevout = vin[i].prevout;
\r
1085 if (!mapTransactions.count(prevout.hash))
\r
1087 CTransaction& txPrev = mapTransactions[prevout.hash];
\r
1089 if (prevout.n >= txPrev.vout.size())
\r
1092 // Verify signature
\r
1093 if (!VerifySignature(txPrev, *this, i))
\r
1094 return error("ConnectInputs() : VerifySignature failed");
\r
1096 ///// this is redundant with the mapNextTx stuff, not sure which I want to get rid of
\r
1097 ///// this has to go away now that posNext is gone
\r
1098 // // Check for conflicts
\r
1099 // if (!txPrev.vout[prevout.n].posNext.IsNull())
\r
1100 // return error("ConnectInputs() : prev tx already used");
\r
1102 // // Flag outpoints as used
\r
1103 // txPrev.vout[prevout.n].posNext = posThisTx;
\r
1105 nValueIn += txPrev.vout[prevout.n].nValue;
\r
1107 if (GetValueOut() > nValueIn)
\r
1117 bool CBlock::DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex)
\r
1119 // Disconnect in reverse order
\r
1120 for (int i = vtx.size()-1; i >= 0; i--)
\r
1121 if (!vtx[i].DisconnectInputs(txdb))
\r
1124 // Update block index on disk without changing it in memory.
\r
1125 // The memory index structure will be changed after the db commits.
\r
1126 if (pindex->pprev)
\r
1128 CDiskBlockIndex blockindexPrev(pindex->pprev);
\r
1129 blockindexPrev.hashNext = 0;
\r
1130 txdb.WriteBlockIndex(blockindexPrev);
\r
1136 bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
\r
1138 // Check it again in case a previous version let a bad block in
\r
1139 if (!CheckBlock())
\r
1142 //// issue here: it doesn't know the version
\r
1143 unsigned int nTxPos = pindex->nBlockPos + ::GetSerializeSize(CBlock(), SER_DISK) - 1 + GetSizeOfCompactSize(vtx.size());
\r
1145 map<uint256, CTxIndex> mapUnused;
\r
1147 foreach(CTransaction& tx, vtx)
\r
1149 CDiskTxPos posThisTx(pindex->nFile, pindex->nBlockPos, nTxPos);
\r
1150 nTxPos += ::GetSerializeSize(tx, SER_DISK);
\r
1152 if (!tx.ConnectInputs(txdb, mapUnused, posThisTx, pindex, nFees, true, false))
\r
1156 if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
\r
1159 // Update block index on disk without changing it in memory.
\r
1160 // The memory index structure will be changed after the db commits.
\r
1161 if (pindex->pprev)
\r
1163 CDiskBlockIndex blockindexPrev(pindex->pprev);
\r
1164 blockindexPrev.hashNext = pindex->GetBlockHash();
\r
1165 txdb.WriteBlockIndex(blockindexPrev);
\r
1168 // Watch for transactions paying to me
\r
1169 foreach(CTransaction& tx, vtx)
\r
1170 AddToWalletIfMine(tx, this);
\r
1177 bool Reorganize(CTxDB& txdb, CBlockIndex* pindexNew)
\r
1179 printf("REORGANIZE\n");
\r
1182 CBlockIndex* pfork = pindexBest;
\r
1183 CBlockIndex* plonger = pindexNew;
\r
1184 while (pfork != plonger)
\r
1186 while (plonger->nHeight > pfork->nHeight)
\r
1187 if (!(plonger = plonger->pprev))
\r
1188 return error("Reorganize() : plonger->pprev is null");
\r
1189 if (pfork == plonger)
\r
1191 if (!(pfork = pfork->pprev))
\r
1192 return error("Reorganize() : pfork->pprev is null");
\r
1195 // List of what to disconnect
\r
1196 vector<CBlockIndex*> vDisconnect;
\r
1197 for (CBlockIndex* pindex = pindexBest; pindex != pfork; pindex = pindex->pprev)
\r
1198 vDisconnect.push_back(pindex);
\r
1200 // List of what to connect
\r
1201 vector<CBlockIndex*> vConnect;
\r
1202 for (CBlockIndex* pindex = pindexNew; pindex != pfork; pindex = pindex->pprev)
\r
1203 vConnect.push_back(pindex);
\r
1204 reverse(vConnect.begin(), vConnect.end());
\r
1206 // Disconnect shorter branch
\r
1207 vector<CTransaction> vResurrect;
\r
1208 foreach(CBlockIndex* pindex, vDisconnect)
\r
1211 if (!block.ReadFromDisk(pindex))
\r
1212 return error("Reorganize() : ReadFromDisk for disconnect failed");
\r
1213 if (!block.DisconnectBlock(txdb, pindex))
\r
1214 return error("Reorganize() : DisconnectBlock failed");
\r
1216 // Queue memory transactions to resurrect
\r
1217 foreach(const CTransaction& tx, block.vtx)
\r
1218 if (!tx.IsCoinBase())
\r
1219 vResurrect.push_back(tx);
\r
1222 // Connect longer branch
\r
1223 vector<CTransaction> vDelete;
\r
1224 for (int i = 0; i < vConnect.size(); i++)
\r
1226 CBlockIndex* pindex = vConnect[i];
\r
1228 if (!block.ReadFromDisk(pindex))
\r
1229 return error("Reorganize() : ReadFromDisk for connect failed");
\r
1230 if (!block.ConnectBlock(txdb, pindex))
\r
1234 return error("Reorganize() : ConnectBlock failed");
\r
1237 // Queue memory transactions to delete
\r
1238 foreach(const CTransaction& tx, block.vtx)
\r
1239 vDelete.push_back(tx);
\r
1241 if (!txdb.WriteHashBestChain(pindexNew->GetBlockHash()))
\r
1242 return error("Reorganize() : WriteHashBestChain failed");
\r
1244 // Commit now because resurrecting could take some time
\r
1247 // Disconnect shorter branch
\r
1248 foreach(CBlockIndex* pindex, vDisconnect)
\r
1249 if (pindex->pprev)
\r
1250 pindex->pprev->pnext = NULL;
\r
1252 // Connect longer branch
\r
1253 foreach(CBlockIndex* pindex, vConnect)
\r
1254 if (pindex->pprev)
\r
1255 pindex->pprev->pnext = pindex;
\r
1257 // Resurrect memory transactions that were in the disconnected branch
\r
1258 foreach(CTransaction& tx, vResurrect)
\r
1259 tx.AcceptTransaction(txdb, false);
\r
1261 // Delete redundant memory transactions that are in the connected branch
\r
1262 foreach(CTransaction& tx, vDelete)
\r
1263 tx.RemoveFromMemoryPool();
\r
1269 bool CBlock::SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew)
\r
1271 uint256 hash = GetHash();
\r
1274 if (pindexGenesisBlock == NULL && hash == hashGenesisBlock)
\r
1276 pindexGenesisBlock = pindexNew;
\r
1277 txdb.WriteHashBestChain(hash);
\r
1279 else if (hashPrevBlock == hashBestChain)
\r
1281 // Adding to current best branch
\r
1282 if (!ConnectBlock(txdb, pindexNew) || !txdb.WriteHashBestChain(hash))
\r
1285 Lockdown(pindexNew);
\r
1286 return error("SetBestChain() : ConnectBlock failed");
\r
1289 pindexNew->pprev->pnext = pindexNew;
\r
1291 // Delete redundant memory transactions
\r
1292 foreach(CTransaction& tx, vtx)
\r
1293 tx.RemoveFromMemoryPool();
\r
1297 // New best branch
\r
1298 if (!Reorganize(txdb, pindexNew))
\r
1301 Lockdown(pindexNew);
\r
1302 return error("SetBestChain() : Reorganize failed");
\r
1308 hashBestChain = hash;
\r
1309 pindexBest = pindexNew;
\r
1310 nBestHeight = pindexBest->nHeight;
\r
1311 bnBestChainWork = pindexNew->bnChainWork;
\r
1312 nTimeBestReceived = GetTime();
\r
1313 nTransactionsUpdated++;
\r
1314 printf("SetBestChain: new best=%s height=%d work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
\r
1320 bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos)
\r
1322 // Check for duplicate
\r
1323 uint256 hash = GetHash();
\r
1324 if (mapBlockIndex.count(hash))
\r
1325 return error("AddToBlockIndex() : %s already exists", hash.ToString().substr(0,20).c_str());
\r
1327 // Construct new block index object
\r
1328 CBlockIndex* pindexNew = new CBlockIndex(nFile, nBlockPos, *this);
\r
1330 return error("AddToBlockIndex() : new CBlockIndex failed");
\r
1331 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
\r
1332 pindexNew->phashBlock = &((*mi).first);
\r
1333 map<uint256, CBlockIndex*>::iterator miPrev = mapBlockIndex.find(hashPrevBlock);
\r
1334 if (miPrev != mapBlockIndex.end())
\r
1336 pindexNew->pprev = (*miPrev).second;
\r
1337 pindexNew->nHeight = pindexNew->pprev->nHeight + 1;
\r
1339 pindexNew->bnChainWork = (pindexNew->pprev ? pindexNew->pprev->bnChainWork : 0) + pindexNew->GetBlockWork();
\r
1342 txdb.WriteBlockIndex(CDiskBlockIndex(pindexNew));
\r
1345 if (pindexNew->bnChainWork > bnBestChainWork)
\r
1346 if (!SetBestChain(txdb, pindexNew))
\r
1351 if (pindexNew == pindexBest)
\r
1353 // Notify UI to display prev block's coinbase if it was ours
\r
1354 static uint256 hashPrevBestCoinBase;
\r
1355 CRITICAL_BLOCK(cs_mapWallet)
\r
1356 vWalletUpdated.push_back(hashPrevBestCoinBase);
\r
1357 hashPrevBestCoinBase = vtx[0].GetHash();
\r
1360 MainFrameRepaint();
\r
1367 bool CBlock::CheckBlock() const
\r
1369 // These are checks that are independent of context
\r
1370 // that can be verified before saving an orphan block.
\r
1373 if (vtx.empty() || vtx.size() > MAX_SIZE || ::GetSerializeSize(*this, SER_DISK) > MAX_SIZE)
\r
1374 return error("CheckBlock() : size limits failed");
\r
1376 // Check timestamp
\r
1377 if (GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)
\r
1378 return error("CheckBlock() : block timestamp too far in the future");
\r
1380 // First transaction must be coinbase, the rest must not be
\r
1381 if (vtx.empty() || !vtx[0].IsCoinBase())
\r
1382 return error("CheckBlock() : first tx is not coinbase");
\r
1383 for (int i = 1; i < vtx.size(); i++)
\r
1384 if (vtx[i].IsCoinBase())
\r
1385 return error("CheckBlock() : more than one coinbase");
\r
1387 // Check transactions
\r
1388 foreach(const CTransaction& tx, vtx)
\r
1389 if (!tx.CheckTransaction())
\r
1390 return error("CheckBlock() : CheckTransaction failed");
\r
1392 // Check proof of work matches claimed amount
\r
1393 if (!CheckProofOfWork(GetHash(), nBits))
\r
1394 return error("CheckBlock() : proof of work failed");
\r
1396 // Check merkleroot
\r
1397 if (hashMerkleRoot != BuildMerkleTree())
\r
1398 return error("CheckBlock() : hashMerkleRoot mismatch");
\r
1403 bool CBlock::AcceptBlock()
\r
1405 // Check for duplicate
\r
1406 uint256 hash = GetHash();
\r
1407 if (mapBlockIndex.count(hash))
\r
1408 return error("AcceptBlock() : block already in mapBlockIndex");
\r
1410 // Get prev block index
\r
1411 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashPrevBlock);
\r
1412 if (mi == mapBlockIndex.end())
\r
1413 return error("AcceptBlock() : prev block not found");
\r
1414 CBlockIndex* pindexPrev = (*mi).second;
\r
1416 // Check timestamp against prev
\r
1417 if (GetBlockTime() <= pindexPrev->GetMedianTimePast())
\r
1418 return error("AcceptBlock() : block's timestamp is too early");
\r
1420 // Check that all transactions are finalized
\r
1421 foreach(const CTransaction& tx, vtx)
\r
1422 if (!tx.IsFinal(pindexPrev->nHeight+1, GetBlockTime()))
\r
1423 return error("AcceptBlock() : contains a non-final transaction");
\r
1425 // Check proof of work
\r
1426 if (nBits != GetNextWorkRequired(pindexPrev))
\r
1427 return error("AcceptBlock() : incorrect proof of work");
\r
1429 // Check that the block chain matches the known block chain up to a checkpoint
\r
1430 if ((pindexPrev->nHeight+1 == 11111 && hash != uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")) ||
\r
1431 (pindexPrev->nHeight+1 == 33333 && hash != uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")) ||
\r
1432 (pindexPrev->nHeight+1 == 68555 && hash != uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a")) ||
\r
1433 (pindexPrev->nHeight+1 == 70567 && hash != uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a")) ||
\r
1434 (pindexPrev->nHeight+1 == 74000 && hash != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")))
\r
1435 return error("AcceptBlock() : rejected by checkpoint lockin at %d", pindexPrev->nHeight+1);
\r
1437 // Scanback checkpoint lockin
\r
1438 for (CBlockIndex* pindex = pindexPrev; pindex->nHeight >= 74000; pindex = pindex->pprev)
\r
1440 if (pindex->nHeight == 74000 && pindex->GetBlockHash() != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
\r
1441 return error("AcceptBlock() : rejected by scanback lockin at %d", pindex->nHeight);
\r
1442 if (pindex->nHeight == 74638 && pindex->GetBlockHash() == uint256("0x0000000000790ab3f22ec756ad43b6ab569abf0bddeb97c67a6f7b1470a7ec1c"))
\r
1443 return error("AcceptBlock() : rejected by scanback lockin at %d", pindex->nHeight);
\r
1446 // Write block to history file
\r
1447 if (!CheckDiskSpace(::GetSerializeSize(*this, SER_DISK)))
\r
1448 return error("AcceptBlock() : out of disk space");
\r
1449 unsigned int nFile;
\r
1450 unsigned int nBlockPos;
\r
1451 if (!WriteToDisk(!fClient, nFile, nBlockPos))
\r
1452 return error("AcceptBlock() : WriteToDisk failed");
\r
1453 if (!AddToBlockIndex(nFile, nBlockPos))
\r
1454 return error("AcceptBlock() : AddToBlockIndex failed");
\r
1456 // Relay inventory, but don't relay old inventory during initial block download
\r
1457 if (hashBestChain == hash)
\r
1458 CRITICAL_BLOCK(cs_vNodes)
\r
1459 foreach(CNode* pnode, vNodes)
\r
1460 if (nBestHeight > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : 55000))
\r
1461 pnode->PushInventory(CInv(MSG_BLOCK, hash));
\r
1466 bool ProcessBlock(CNode* pfrom, CBlock* pblock)
\r
1468 // Check for duplicate
\r
1469 uint256 hash = pblock->GetHash();
\r
1470 if (mapBlockIndex.count(hash))
\r
1471 return error("ProcessBlock() : already have block %d %s", mapBlockIndex[hash]->nHeight, hash.ToString().substr(0,20).c_str());
\r
1472 if (mapOrphanBlocks.count(hash))
\r
1473 return error("ProcessBlock() : already have block (orphan) %s", hash.ToString().substr(0,20).c_str());
\r
1475 // Preliminary checks
\r
1476 if (!pblock->CheckBlock())
\r
1479 return error("ProcessBlock() : CheckBlock FAILED");
\r
1482 // If don't already have its previous block, shunt it off to holding area until we get it
\r
1483 if (!mapBlockIndex.count(pblock->hashPrevBlock))
\r
1485 printf("ProcessBlock: ORPHAN BLOCK, prev=%s\n", pblock->hashPrevBlock.ToString().substr(0,20).c_str());
\r
1486 mapOrphanBlocks.insert(make_pair(hash, pblock));
\r
1487 mapOrphanBlocksByPrev.insert(make_pair(pblock->hashPrevBlock, pblock));
\r
1489 // Ask this guy to fill in what we're missing
\r
1491 pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(pblock));
\r
1496 if (!pblock->AcceptBlock())
\r
1499 return error("ProcessBlock() : AcceptBlock FAILED");
\r
1503 // Recursively process any orphan blocks that depended on this one
\r
1504 vector<uint256> vWorkQueue;
\r
1505 vWorkQueue.push_back(hash);
\r
1506 for (int i = 0; i < vWorkQueue.size(); i++)
\r
1508 uint256 hashPrev = vWorkQueue[i];
\r
1509 for (multimap<uint256, CBlock*>::iterator mi = mapOrphanBlocksByPrev.lower_bound(hashPrev);
\r
1510 mi != mapOrphanBlocksByPrev.upper_bound(hashPrev);
\r
1513 CBlock* pblockOrphan = (*mi).second;
\r
1514 if (pblockOrphan->AcceptBlock())
\r
1515 vWorkQueue.push_back(pblockOrphan->GetHash());
\r
1516 mapOrphanBlocks.erase(pblockOrphan->GetHash());
\r
1517 delete pblockOrphan;
\r
1519 mapOrphanBlocksByPrev.erase(hashPrev);
\r
1522 printf("ProcessBlock: ACCEPTED\n");
\r
1533 template<typename Stream>
\r
1534 bool ScanMessageStart(Stream& s)
\r
1536 // Scan ahead to the next pchMessageStart, which should normally be immediately
\r
1537 // at the file pointer. Leaves file pointer at end of pchMessageStart.
\r
1539 short prevmask = s.exceptions(0);
\r
1540 const char* p = BEGIN(pchMessageStart);
\r
1550 s.exceptions(prevmask);
\r
1554 p = BEGIN(pchMessageStart);
\r
1557 if (++p == END(pchMessageStart))
\r
1560 s.exceptions(prevmask);
\r
1569 s.exceptions(prevmask);
\r
1574 bool CheckDiskSpace(int64 nAdditionalBytes)
\r
1576 uint64 nFreeBytesAvailable = filesystem::space(GetDataDir()).available;
\r
1578 // Check for 15MB because database could create another 10MB log file at any time
\r
1579 if (nFreeBytesAvailable < (int64)15000000 + nAdditionalBytes)
\r
1582 printf("*** %s***\n", _("Warning: Disk space is low "));
\r
1584 ThreadSafeMessageBox(_("Warning: Disk space is low "), "Bitcoin", wxOK | wxICON_EXCLAMATION);
\r
1586 CreateThread(Shutdown, NULL);
\r
1592 FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode)
\r
1596 FILE* file = fopen(strprintf("%s/blk%04d.dat", GetDataDir().c_str(), nFile).c_str(), pszMode);
\r
1599 if (nBlockPos != 0 && !strchr(pszMode, 'a') && !strchr(pszMode, 'w'))
\r
1601 if (fseek(file, nBlockPos, SEEK_SET) != 0)
\r
1610 static unsigned int nCurrentBlockFile = 1;
\r
1612 FILE* AppendBlockFile(unsigned int& nFileRet)
\r
1617 FILE* file = OpenBlockFile(nCurrentBlockFile, 0, "ab");
\r
1620 if (fseek(file, 0, SEEK_END) != 0)
\r
1622 // FAT32 filesize max 4GB, fseek and ftell max 2GB, so we must stay under 2GB
\r
1623 if (ftell(file) < 0x7F000000 - MAX_SIZE)
\r
1625 nFileRet = nCurrentBlockFile;
\r
1629 nCurrentBlockFile++;
\r
1633 bool LoadBlockIndex(bool fAllowNew)
\r
1636 // Load block index
\r
1639 if (!txdb.LoadBlockIndex())
\r
1644 // Init with genesis block
\r
1646 if (mapBlockIndex.empty())
\r
1653 // GetHash() = 0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
\r
1654 // hashMerkleRoot = 0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
\r
1655 // txNew.vin[0].scriptSig = 486604799 4 0x736B6E616220726F662074756F6C69616220646E6F63657320666F206B6E697262206E6F20726F6C6C65636E61684320393030322F6E614A2F33302073656D695420656854
\r
1656 // txNew.vout[0].nValue = 5000000000
\r
1657 // txNew.vout[0].scriptPubKey = 0x5F1DF16B2B704C8A578D0BBAF74D385CDE12C11EE50455F3C438EF4C3FBCF649B6DE611FEAE06279A60939E028A8D65C10B73071A6F16719274855FEB0FD8A6704 OP_CHECKSIG
\r
1658 // block.nVersion = 1
\r
1659 // block.nTime = 1231006505
\r
1660 // block.nBits = 0x1d00ffff
\r
1661 // block.nNonce = 2083236893
\r
1662 // CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
\r
1663 // CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
\r
1664 // CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
\r
1665 // CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
\r
1666 // vMerkleTree: 4a5e1e
\r
1669 const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
\r
1670 CTransaction txNew;
\r
1671 txNew.vin.resize(1);
\r
1672 txNew.vout.resize(1);
\r
1673 txNew.vin[0].scriptSig = CScript() << 486604799 << CBigNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
\r
1674 txNew.vout[0].nValue = 50 * COIN;
\r
1676 bnPubKey.SetHex("0x5F1DF16B2B704C8A578D0BBAF74D385CDE12C11EE50455F3C438EF4C3FBCF649B6DE611FEAE06279A60939E028A8D65C10B73071A6F16719274855FEB0FD8A6704");
\r
1677 txNew.vout[0].scriptPubKey = CScript() << bnPubKey << OP_CHECKSIG;
\r
1679 block.vtx.push_back(txNew);
\r
1680 block.hashPrevBlock = 0;
\r
1681 block.hashMerkleRoot = block.BuildMerkleTree();
\r
1682 block.nVersion = 1;
\r
1683 block.nTime = 1231006505;
\r
1684 block.nBits = 0x1d00ffff;
\r
1685 block.nNonce = 2083236893;
\r
1688 printf("%s\n", block.GetHash().ToString().c_str());
\r
1689 printf("%s\n", block.hashMerkleRoot.ToString().c_str());
\r
1690 printf("%s\n", hashGenesisBlock.ToString().c_str());
\r
1691 txNew.vout[0].scriptPubKey.print();
\r
1693 assert(block.hashMerkleRoot == uint256("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
\r
1695 assert(block.GetHash() == hashGenesisBlock);
\r
1697 // Start new block file
\r
1698 unsigned int nFile;
\r
1699 unsigned int nBlockPos;
\r
1700 if (!block.WriteToDisk(!fClient, nFile, nBlockPos))
\r
1701 return error("LoadBlockIndex() : writing genesis block to disk failed");
\r
1702 if (!block.AddToBlockIndex(nFile, nBlockPos))
\r
1703 return error("LoadBlockIndex() : genesis block not accepted");
\r
1711 void PrintBlockTree()
\r
1713 // precompute tree structure
\r
1714 map<CBlockIndex*, vector<CBlockIndex*> > mapNext;
\r
1715 for (map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.begin(); mi != mapBlockIndex.end(); ++mi)
\r
1717 CBlockIndex* pindex = (*mi).second;
\r
1718 mapNext[pindex->pprev].push_back(pindex);
\r
1720 //while (rand() % 3 == 0)
\r
1721 // mapNext[pindex->pprev].push_back(pindex);
\r
1724 vector<pair<int, CBlockIndex*> > vStack;
\r
1725 vStack.push_back(make_pair(0, pindexGenesisBlock));
\r
1728 while (!vStack.empty())
\r
1730 int nCol = vStack.back().first;
\r
1731 CBlockIndex* pindex = vStack.back().second;
\r
1732 vStack.pop_back();
\r
1734 // print split or gap
\r
1735 if (nCol > nPrevCol)
\r
1737 for (int i = 0; i < nCol-1; i++)
\r
1741 else if (nCol < nPrevCol)
\r
1743 for (int i = 0; i < nCol; i++)
\r
1750 for (int i = 0; i < nCol; i++)
\r
1755 block.ReadFromDisk(pindex);
\r
1756 printf("%d (%u,%u) %s %s tx %d",
\r
1759 pindex->nBlockPos,
\r
1760 block.GetHash().ToString().substr(0,20).c_str(),
\r
1761 DateTimeStrFormat("%x %H:%M:%S", block.GetBlockTime()).c_str(),
\r
1762 block.vtx.size());
\r
1764 CRITICAL_BLOCK(cs_mapWallet)
\r
1766 if (mapWallet.count(block.vtx[0].GetHash()))
\r
1768 CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
\r
1769 printf(" mine: %d %d %d", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
\r
1775 // put the main timechain first
\r
1776 vector<CBlockIndex*>& vNext = mapNext[pindex];
\r
1777 for (int i = 0; i < vNext.size(); i++)
\r
1779 if (vNext[i]->pnext)
\r
1781 swap(vNext[0], vNext[i]);
\r
1786 // iterate children
\r
1787 for (int i = 0; i < vNext.size(); i++)
\r
1788 vStack.push_back(make_pair(nCol+i, vNext[i]));
\r
1801 //////////////////////////////////////////////////////////////////////////////
\r
1807 bool AlreadyHave(CTxDB& txdb, const CInv& inv)
\r
1811 case MSG_TX: return mapTransactions.count(inv.hash) || txdb.ContainsTx(inv.hash);
\r
1812 case MSG_BLOCK: return mapBlockIndex.count(inv.hash) || mapOrphanBlocks.count(inv.hash);
\r
1814 // Don't know what it is, just say we already got one
\r
1824 bool ProcessMessages(CNode* pfrom)
\r
1826 CDataStream& vRecv = pfrom->vRecv;
\r
1827 if (vRecv.empty())
\r
1830 // printf("ProcessMessages(%d bytes)\n", vRecv.size());
\r
1834 // (4) message start
\r
1843 // Scan for message start
\r
1844 CDataStream::iterator pstart = search(vRecv.begin(), vRecv.end(), BEGIN(pchMessageStart), END(pchMessageStart));
\r
1845 int nHeaderSize = vRecv.GetSerializeSize(CMessageHeader());
\r
1846 if (vRecv.end() - pstart < nHeaderSize)
\r
1848 if (vRecv.size() > nHeaderSize)
\r
1850 printf("\n\nPROCESSMESSAGE MESSAGESTART NOT FOUND\n\n");
\r
1851 vRecv.erase(vRecv.begin(), vRecv.end() - nHeaderSize);
\r
1855 if (pstart - vRecv.begin() > 0)
\r
1856 printf("\n\nPROCESSMESSAGE SKIPPED %d BYTES\n\n", pstart - vRecv.begin());
\r
1857 vRecv.erase(vRecv.begin(), pstart);
\r
1860 vector<char> vHeaderSave(vRecv.begin(), vRecv.begin() + nHeaderSize);
\r
1861 CMessageHeader hdr;
\r
1863 if (!hdr.IsValid())
\r
1865 printf("\n\nPROCESSMESSAGE: ERRORS IN HEADER %s\n\n\n", hdr.GetCommand().c_str());
\r
1868 string strCommand = hdr.GetCommand();
\r
1871 unsigned int nMessageSize = hdr.nMessageSize;
\r
1872 if (nMessageSize > vRecv.size())
\r
1874 // Rewind and wait for rest of message
\r
1875 ///// need a mechanism to give up waiting for overlong message size error
\r
1876 vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());
\r
1880 // Copy message to its own buffer
\r
1881 CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);
\r
1882 vRecv.ignore(nMessageSize);
\r
1885 if (vRecv.GetVersion() >= 209)
\r
1887 uint256 hash = Hash(vMsg.begin(), vMsg.end());
\r
1888 unsigned int nChecksum = 0;
\r
1889 memcpy(&nChecksum, &hash, sizeof(nChecksum));
\r
1890 if (nChecksum != hdr.nChecksum)
\r
1892 printf("ProcessMessage(%s, %d bytes) : CHECKSUM ERROR nChecksum=%08x hdr.nChecksum=%08x\n",
\r
1893 strCommand.c_str(), nMessageSize, nChecksum, hdr.nChecksum);
\r
1898 // Process message
\r
1899 bool fRet = false;
\r
1902 CRITICAL_BLOCK(cs_main)
\r
1903 fRet = ProcessMessage(pfrom, strCommand, vMsg);
\r
1907 catch (std::ios_base::failure& e)
\r
1909 if (strstr(e.what(), "CDataStream::read() : end of data"))
\r
1911 // Allow exceptions from underlength message on vRecv
\r
1912 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());
\r
1914 else if (strstr(e.what(), ": size too large"))
\r
1916 // Allow exceptions from overlong size
\r
1917 printf("ProcessMessage(%s, %d bytes) : Exception '%s' caught\n", strCommand.c_str(), nMessageSize, e.what());
\r
1921 PrintException(&e, "ProcessMessage()");
\r
1924 catch (std::exception& e) {
\r
1925 PrintException(&e, "ProcessMessage()");
\r
1927 PrintException(NULL, "ProcessMessage()");
\r
1931 printf("ProcessMessage(%s, %d bytes) FAILED\n", strCommand.c_str(), nMessageSize);
\r
1941 bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
\r
1943 static map<unsigned int, vector<unsigned char> > mapReuseKey;
\r
1944 RandAddSeedPerfmon();
\r
1946 printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
\r
1947 printf("received: %s (%d bytes)\n", strCommand.c_str(), vRecv.size());
\r
1948 if (mapArgs.count("-dropmessagestest") && GetRand(atoi(mapArgs["-dropmessagestest"])) == 0)
\r
1950 printf("dropmessagestest DROPPING RECV MESSAGE\n");
\r
1958 if (strCommand == "version")
\r
1960 // Each connection can only send one version message
\r
1961 if (pfrom->nVersion != 0)
\r
1966 CAddress addrFrom;
\r
1967 uint64 nNonce = 1;
\r
1969 vRecv >> pfrom->nVersion >> pfrom->nServices >> nTime >> addrMe;
\r
1970 if (pfrom->nVersion == 10300)
\r
1971 pfrom->nVersion = 300;
\r
1972 if (pfrom->nVersion >= 106 && !vRecv.empty())
\r
1973 vRecv >> addrFrom >> nNonce;
\r
1974 if (pfrom->nVersion >= 106 && !vRecv.empty())
\r
1975 vRecv >> strSubVer;
\r
1976 if (pfrom->nVersion >= 209 && !vRecv.empty())
\r
1977 vRecv >> pfrom->nStartingHeight;
\r
1979 if (pfrom->nVersion == 0)
\r
1982 // Disconnect if we connected to ourself
\r
1983 if (nNonce == nLocalHostNonce && nNonce > 1)
\r
1985 pfrom->fDisconnect = true;
\r
1989 pfrom->fClient = !(pfrom->nServices & NODE_NETWORK);
\r
1990 if (pfrom->fClient)
\r
1992 pfrom->vSend.nType |= SER_BLOCKHEADERONLY;
\r
1993 pfrom->vRecv.nType |= SER_BLOCKHEADERONLY;
\r
1996 AddTimeData(pfrom->addr.ip, nTime);
\r
1999 if (pfrom->nVersion >= 209)
\r
2000 pfrom->PushMessage("verack");
\r
2001 pfrom->vSend.SetVersion(min(pfrom->nVersion, VERSION));
\r
2002 if (pfrom->nVersion < 209)
\r
2003 pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));
\r
2005 // Ask the first connected node for block updates
\r
2006 static int nAskedForBlocks;
\r
2007 if (!pfrom->fClient && (nAskedForBlocks < 1 || vNodes.size() <= 1))
\r
2009 nAskedForBlocks++;
\r
2010 pfrom->PushGetBlocks(pindexBest, uint256(0));
\r
2013 pfrom->fSuccessfullyConnected = true;
\r
2015 printf("version message: version %d, blocks=%d\n", pfrom->nVersion, pfrom->nStartingHeight);
\r
2019 else if (pfrom->nVersion == 0)
\r
2021 // Must have a version message before anything else
\r
2026 else if (strCommand == "verack")
\r
2028 pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));
\r
2032 else if (strCommand == "addr")
\r
2034 vector<CAddress> vAddr;
\r
2036 if (pfrom->nVersion < 200) // don't want addresses from 0.1.5
\r
2038 if (pfrom->nVersion < 209 && mapAddresses.size() > 1000) // don't want addr from 0.2.0 unless seeding
\r
2040 if (vAddr.size() > 1000)
\r
2041 return error("message addr size() = %d", vAddr.size());
\r
2043 // Store the new addresses
\r
2044 foreach(CAddress& addr, vAddr)
\r
2048 // ignore IPv6 for now, since it isn't implemented anyway
\r
2049 if (!addr.IsIPv4())
\r
2051 addr.nTime = GetAdjustedTime() - 2 * 60 * 60;
\r
2052 if (pfrom->fGetAddr || vAddr.size() > 10)
\r
2053 addr.nTime -= 5 * 24 * 60 * 60;
\r
2055 pfrom->AddAddressKnown(addr);
\r
2056 if (!pfrom->fGetAddr && addr.IsRoutable())
\r
2058 // Relay to a limited number of other nodes
\r
2059 CRITICAL_BLOCK(cs_vNodes)
\r
2061 // Use deterministic randomness to send to
\r
2062 // the same places for 12 hours at a time
\r
2063 static uint256 hashSalt;
\r
2064 if (hashSalt == 0)
\r
2065 RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
\r
2066 uint256 hashRand = addr.ip ^ ((GetTime()+addr.ip)/(12*60*60)) ^ hashSalt;
\r
2067 multimap<uint256, CNode*> mapMix;
\r
2068 foreach(CNode* pnode, vNodes)
\r
2069 mapMix.insert(make_pair(hashRand = Hash(BEGIN(hashRand), END(hashRand)), pnode));
\r
2070 int nRelayNodes = 4;
\r
2071 for (multimap<uint256, CNode*>::iterator mi = mapMix.begin(); mi != mapMix.end() && nRelayNodes-- > 0; ++mi)
\r
2072 ((*mi).second)->PushAddress(addr);
\r
2076 if (vAddr.size() < 1000)
\r
2077 pfrom->fGetAddr = false;
\r
2081 else if (strCommand == "inv")
\r
2083 vector<CInv> vInv;
\r
2085 if (vInv.size() > 50000)
\r
2086 return error("message inv size() = %d", vInv.size());
\r
2089 foreach(const CInv& inv, vInv)
\r
2093 pfrom->AddInventoryKnown(inv);
\r
2095 bool fAlreadyHave = AlreadyHave(txdb, inv);
\r
2096 printf(" got inventory: %s %s\n", inv.ToString().c_str(), fAlreadyHave ? "have" : "new");
\r
2098 if (!fAlreadyHave)
\r
2099 pfrom->AskFor(inv);
\r
2100 else if (inv.type == MSG_BLOCK && mapOrphanBlocks.count(inv.hash))
\r
2101 pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(mapOrphanBlocks[inv.hash]));
\r
2103 // Track requests for our stuff
\r
2104 CRITICAL_BLOCK(cs_mapRequestCount)
\r
2106 map<uint256, int>::iterator mi = mapRequestCount.find(inv.hash);
\r
2107 if (mi != mapRequestCount.end())
\r
2114 else if (strCommand == "getdata")
\r
2116 vector<CInv> vInv;
\r
2118 if (vInv.size() > 50000)
\r
2119 return error("message getdata size() = %d", vInv.size());
\r
2121 foreach(const CInv& inv, vInv)
\r
2125 printf("received getdata for: %s\n", inv.ToString().c_str());
\r
2127 if (inv.type == MSG_BLOCK)
\r
2129 // Send block from disk
\r
2130 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(inv.hash);
\r
2131 if (mi != mapBlockIndex.end())
\r
2133 //// could optimize this to send header straight from blockindex for client
\r
2135 block.ReadFromDisk((*mi).second, !pfrom->fClient);
\r
2136 pfrom->PushMessage("block", block);
\r
2138 // Trigger them to send a getblocks request for the next batch of inventory
\r
2139 if (inv.hash == pfrom->hashContinue)
\r
2141 // Bypass PushInventory, this must send even if redundant,
\r
2142 // and we want it right after the last block so they don't
\r
2143 // wait for other stuff first.
\r
2144 vector<CInv> vInv;
\r
2145 vInv.push_back(CInv(MSG_BLOCK, hashBestChain));
\r
2146 pfrom->PushMessage("inv", vInv);
\r
2147 pfrom->hashContinue = 0;
\r
2151 else if (inv.IsKnownType())
\r
2153 // Send stream from relay memory
\r
2154 CRITICAL_BLOCK(cs_mapRelay)
\r
2156 map<CInv, CDataStream>::iterator mi = mapRelay.find(inv);
\r
2157 if (mi != mapRelay.end())
\r
2158 pfrom->PushMessage(inv.GetCommand(), (*mi).second);
\r
2162 // Track requests for our stuff
\r
2163 CRITICAL_BLOCK(cs_mapRequestCount)
\r
2165 map<uint256, int>::iterator mi = mapRequestCount.find(inv.hash);
\r
2166 if (mi != mapRequestCount.end())
\r
2173 else if (strCommand == "getblocks")
\r
2175 CBlockLocator locator;
\r
2177 vRecv >> locator >> hashStop;
\r
2179 // Find the first block the caller has in the main chain
\r
2180 CBlockIndex* pindex = locator.GetBlockIndex();
\r
2182 // Send the rest of the chain
\r
2184 pindex = pindex->pnext;
\r
2185 int nLimit = 500 + locator.GetDistanceBack();
\r
2186 printf("getblocks %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,20).c_str(), nLimit);
\r
2187 for (; pindex; pindex = pindex->pnext)
\r
2189 if (pindex->GetBlockHash() == hashStop)
\r
2191 printf(" getblocks stopping at %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str());
\r
2194 pfrom->PushInventory(CInv(MSG_BLOCK, pindex->GetBlockHash()));
\r
2195 if (--nLimit <= 0)
\r
2197 // When this block is requested, we'll send an inv that'll make them
\r
2198 // getblocks the next batch of inventory.
\r
2199 printf(" getblocks stopping at limit %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str());
\r
2200 pfrom->hashContinue = pindex->GetBlockHash();
\r
2207 else if (strCommand == "tx")
\r
2209 vector<uint256> vWorkQueue;
\r
2210 CDataStream vMsg(vRecv);
\r
2214 CInv inv(MSG_TX, tx.GetHash());
\r
2215 pfrom->AddInventoryKnown(inv);
\r
2217 bool fMissingInputs = false;
\r
2218 if (tx.AcceptTransaction(true, &fMissingInputs))
\r
2220 AddToWalletIfMine(tx, NULL);
\r
2221 RelayMessage(inv, vMsg);
\r
2222 mapAlreadyAskedFor.erase(inv);
\r
2223 vWorkQueue.push_back(inv.hash);
\r
2225 // Recursively process any orphan transactions that depended on this one
\r
2226 for (int i = 0; i < vWorkQueue.size(); i++)
\r
2228 uint256 hashPrev = vWorkQueue[i];
\r
2229 for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(hashPrev);
\r
2230 mi != mapOrphanTransactionsByPrev.upper_bound(hashPrev);
\r
2233 const CDataStream& vMsg = *((*mi).second);
\r
2235 CDataStream(vMsg) >> tx;
\r
2236 CInv inv(MSG_TX, tx.GetHash());
\r
2238 if (tx.AcceptTransaction(true))
\r
2240 printf(" accepted orphan tx %s\n", inv.hash.ToString().substr(0,6).c_str());
\r
2241 AddToWalletIfMine(tx, NULL);
\r
2242 RelayMessage(inv, vMsg);
\r
2243 mapAlreadyAskedFor.erase(inv);
\r
2244 vWorkQueue.push_back(inv.hash);
\r
2249 foreach(uint256 hash, vWorkQueue)
\r
2250 EraseOrphanTx(hash);
\r
2252 else if (fMissingInputs)
\r
2254 printf("storing orphan tx %s\n", inv.hash.ToString().substr(0,6).c_str());
\r
2255 AddOrphanTx(vMsg);
\r
2260 else if (strCommand == "block")
\r
2262 auto_ptr<CBlock> pblock(new CBlock);
\r
2266 printf("received block %s\n", pblock->GetHash().ToString().substr(0,20).c_str());
\r
2267 // pblock->print();
\r
2269 CInv inv(MSG_BLOCK, pblock->GetHash());
\r
2270 pfrom->AddInventoryKnown(inv);
\r
2272 if (ProcessBlock(pfrom, pblock.release()))
\r
2273 mapAlreadyAskedFor.erase(inv);
\r
2277 else if (strCommand == "getaddr")
\r
2279 // This includes all nodes that are currently online,
\r
2280 // since they rebroadcast an addr every 24 hours
\r
2281 pfrom->vAddrToSend.clear();
\r
2282 int64 nSince = GetAdjustedTime() - 12 * 60 * 60; // in the last 12 hours
\r
2283 CRITICAL_BLOCK(cs_mapAddresses)
\r
2285 unsigned int nSize = mapAddresses.size();
\r
2286 foreach(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
\r
2290 const CAddress& addr = item.second;
\r
2291 if (addr.nTime > nSince)
\r
2292 pfrom->PushAddress(addr);
\r
2298 else if (strCommand == "checkorder")
\r
2300 uint256 hashReply;
\r
2302 vRecv >> hashReply >> order;
\r
2304 /// we have a chance to check the order here
\r
2306 // Keep giving the same key to the same ip until they use it
\r
2307 if (!mapReuseKey.count(pfrom->addr.ip))
\r
2308 mapReuseKey[pfrom->addr.ip] = GenerateNewKey();
\r
2310 // Send back approval of order and pubkey to use
\r
2311 CScript scriptPubKey;
\r
2312 scriptPubKey << mapReuseKey[pfrom->addr.ip] << OP_CHECKSIG;
\r
2313 pfrom->PushMessage("reply", hashReply, (int)0, scriptPubKey);
\r
2317 else if (strCommand == "submitorder")
\r
2319 uint256 hashReply;
\r
2321 vRecv >> hashReply >> wtxNew;
\r
2322 wtxNew.fFromMe = false;
\r
2325 if (!wtxNew.AcceptWalletTransaction())
\r
2327 pfrom->PushMessage("reply", hashReply, (int)1);
\r
2328 return error("submitorder AcceptWalletTransaction() failed, returning error 1");
\r
2330 wtxNew.fTimeReceivedIsTxTime = true;
\r
2331 AddToWallet(wtxNew);
\r
2332 wtxNew.RelayWalletTransaction();
\r
2333 mapReuseKey.erase(pfrom->addr.ip);
\r
2335 // Send back confirmation
\r
2336 pfrom->PushMessage("reply", hashReply, (int)0);
\r
2340 else if (strCommand == "reply")
\r
2342 uint256 hashReply;
\r
2343 vRecv >> hashReply;
\r
2345 CRequestTracker tracker;
\r
2346 CRITICAL_BLOCK(pfrom->cs_mapRequests)
\r
2348 map<uint256, CRequestTracker>::iterator mi = pfrom->mapRequests.find(hashReply);
\r
2349 if (mi != pfrom->mapRequests.end())
\r
2351 tracker = (*mi).second;
\r
2352 pfrom->mapRequests.erase(mi);
\r
2355 if (!tracker.IsNull())
\r
2356 tracker.fn(tracker.param1, vRecv);
\r
2360 else if (strCommand == "ping")
\r
2367 // Ignore unknown commands for extensibility
\r
2371 // Update the last seen time for this node's address
\r
2372 if (pfrom->fNetworkNode)
\r
2373 if (strCommand == "version" || strCommand == "addr" || strCommand == "inv" || strCommand == "getdata" || strCommand == "ping")
\r
2374 AddressCurrentlyConnected(pfrom->addr);
\r
2388 bool SendMessages(CNode* pto, bool fSendTrickle)
\r
2390 CRITICAL_BLOCK(cs_main)
\r
2392 // Don't send anything until we get their version message
\r
2393 if (pto->nVersion == 0)
\r
2396 // Keep-alive ping
\r
2397 if (pto->nLastSend && GetTime() - pto->nLastSend > 30 * 60 && pto->vSend.empty())
\r
2398 pto->PushMessage("ping");
\r
2400 // Address refresh broadcast
\r
2401 static int64 nLastRebroadcast;
\r
2402 if (GetTime() - nLastRebroadcast > 24 * 60 * 60) // every 24 hours
\r
2404 nLastRebroadcast = GetTime();
\r
2405 CRITICAL_BLOCK(cs_vNodes)
\r
2407 foreach(CNode* pnode, vNodes)
\r
2409 // Periodically clear setAddrKnown to allow refresh broadcasts
\r
2410 pnode->setAddrKnown.clear();
\r
2412 // Rebroadcast our address
\r
2413 if (addrLocalHost.IsRoutable() && !fUseProxy)
\r
2414 pnode->PushAddress(addrLocalHost);
\r
2419 // Resend wallet transactions that haven't gotten in a block yet
\r
2420 ResendWalletTransactions();
\r
2428 vector<CAddress> vAddr;
\r
2429 vAddr.reserve(pto->vAddrToSend.size());
\r
2430 foreach(const CAddress& addr, pto->vAddrToSend)
\r
2432 // returns true if wasn't already contained in the set
\r
2433 if (pto->setAddrKnown.insert(addr).second)
\r
2435 vAddr.push_back(addr);
\r
2436 // receiver rejects addr messages larger than 1000
\r
2437 if (vAddr.size() >= 1000)
\r
2439 pto->PushMessage("addr", vAddr);
\r
2444 pto->vAddrToSend.clear();
\r
2445 if (!vAddr.empty())
\r
2446 pto->PushMessage("addr", vAddr);
\r
2451 // Message: inventory
\r
2453 vector<CInv> vInv;
\r
2454 vector<CInv> vInvWait;
\r
2455 CRITICAL_BLOCK(pto->cs_inventory)
\r
2457 vInv.reserve(pto->vInventoryToSend.size());
\r
2458 vInvWait.reserve(pto->vInventoryToSend.size());
\r
2459 foreach(const CInv& inv, pto->vInventoryToSend)
\r
2461 if (pto->setInventoryKnown.count(inv))
\r
2464 // trickle out tx inv to protect privacy
\r
2465 if (inv.type == MSG_TX && !fSendTrickle)
\r
2467 // 1/4 of tx invs blast to all immediately
\r
2468 static uint256 hashSalt;
\r
2469 if (hashSalt == 0)
\r
2470 RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
\r
2471 uint256 hashRand = inv.hash ^ hashSalt;
\r
2472 hashRand = Hash(BEGIN(hashRand), END(hashRand));
\r
2473 bool fTrickleWait = ((hashRand & 3) != 0);
\r
2475 // always trickle our own transactions
\r
2476 if (!fTrickleWait)
\r
2478 TRY_CRITICAL_BLOCK(cs_mapWallet)
\r
2480 map<uint256, CWalletTx>::iterator mi = mapWallet.find(inv.hash);
\r
2481 if (mi != mapWallet.end())
\r
2483 CWalletTx& wtx = (*mi).second;
\r
2485 fTrickleWait = true;
\r
2492 vInvWait.push_back(inv);
\r
2497 // returns true if wasn't already contained in the set
\r
2498 if (pto->setInventoryKnown.insert(inv).second)
\r
2500 vInv.push_back(inv);
\r
2501 if (vInv.size() >= 1000)
\r
2503 pto->PushMessage("inv", vInv);
\r
2508 pto->vInventoryToSend = vInvWait;
\r
2510 if (!vInv.empty())
\r
2511 pto->PushMessage("inv", vInv);
\r
2515 // Message: getdata
\r
2517 vector<CInv> vGetData;
\r
2518 int64 nNow = GetTime() * 1000000;
\r
2520 while (!pto->mapAskFor.empty() && (*pto->mapAskFor.begin()).first <= nNow)
\r
2522 const CInv& inv = (*pto->mapAskFor.begin()).second;
\r
2523 if (!AlreadyHave(txdb, inv))
\r
2525 printf("sending getdata: %s\n", inv.ToString().c_str());
\r
2526 vGetData.push_back(inv);
\r
2527 if (vGetData.size() >= 1000)
\r
2529 pto->PushMessage("getdata", vGetData);
\r
2533 pto->mapAskFor.erase(pto->mapAskFor.begin());
\r
2535 if (!vGetData.empty())
\r
2536 pto->PushMessage("getdata", vGetData);
\r
2555 //////////////////////////////////////////////////////////////////////////////
\r
2560 void GenerateBitcoins(bool fGenerate)
\r
2562 if (fGenerateBitcoins != fGenerate)
\r
2564 fGenerateBitcoins = fGenerate;
\r
2565 CWalletDB().WriteSetting("fGenerateBitcoins", fGenerateBitcoins);
\r
2566 MainFrameRepaint();
\r
2568 if (fGenerateBitcoins)
\r
2570 int nProcessors = boost::thread::hardware_concurrency();
\r
2571 printf("%d processors\n", nProcessors);
\r
2572 if (nProcessors < 1)
\r
2574 if (fLimitProcessors && nProcessors > nLimitProcessors)
\r
2575 nProcessors = nLimitProcessors;
\r
2576 int nAddThreads = nProcessors - vnThreadsRunning[3];
\r
2577 printf("Starting %d BitcoinMiner threads\n", nAddThreads);
\r
2578 for (int i = 0; i < nAddThreads; i++)
\r
2580 if (!CreateThread(ThreadBitcoinMiner, NULL))
\r
2581 printf("Error: CreateThread(ThreadBitcoinMiner) failed\n");
\r
2587 void ThreadBitcoinMiner(void* parg)
\r
2591 vnThreadsRunning[3]++;
\r
2593 vnThreadsRunning[3]--;
\r
2595 catch (std::exception& e) {
\r
2596 vnThreadsRunning[3]--;
\r
2597 PrintException(&e, "ThreadBitcoinMiner()");
\r
2599 vnThreadsRunning[3]--;
\r
2600 PrintException(NULL, "ThreadBitcoinMiner()");
\r
2602 UIThreadCall(bind(CalledSetStatusBar, "", 0));
\r
2603 nHPSTimerStart = 0;
\r
2604 if (vnThreadsRunning[3] == 0)
\r
2605 dHashesPerSec = 0;
\r
2606 printf("ThreadBitcoinMiner exiting, %d threads remaining\n", vnThreadsRunning[3]);
\r
2609 int FormatHashBlocks(void* pbuffer, unsigned int len)
\r
2611 unsigned char* pdata = (unsigned char*)pbuffer;
\r
2612 unsigned int blocks = 1 + ((len + 8) / 64);
\r
2613 unsigned char* pend = pdata + 64 * blocks;
\r
2614 memset(pdata + len, 0, 64 * blocks - len);
\r
2615 pdata[len] = 0x80;
\r
2616 unsigned int bits = len * 8;
\r
2617 pend[-1] = (bits >> 0) & 0xff;
\r
2618 pend[-2] = (bits >> 8) & 0xff;
\r
2619 pend[-3] = (bits >> 16) & 0xff;
\r
2620 pend[-4] = (bits >> 24) & 0xff;
\r
2624 using CryptoPP::ByteReverse;
\r
2626 static const unsigned int pSHA256InitState[8] =
\r
2627 {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};
\r
2629 inline void SHA256Transform(void* pstate, void* pinput, const void* pinit)
\r
2631 memcpy(pstate, pinit, 32);
\r
2632 CryptoPP::SHA256::Transform((CryptoPP::word32*)pstate, (CryptoPP::word32*)pinput);
\r
2635 static const int NPAR = 32;
\r
2636 extern void Double_BlockSHA256(const void* pin, void* pout, const void* pinit, unsigned int hash[8][NPAR], const void* init2);
\r
2641 void BitcoinMiner()
\r
2643 printf("BitcoinMiner started\n");
\r
2644 SetThreadPriority(THREAD_PRIORITY_LOWEST);
\r
2648 CBigNum bnExtraNonce = 0;
\r
2649 while (fGenerateBitcoins)
\r
2654 while (vNodes.empty() || IsInitialBlockDownload())
\r
2659 if (!fGenerateBitcoins)
\r
2663 unsigned int nTransactionsUpdatedLast = nTransactionsUpdated;
\r
2664 CBlockIndex* pindexPrev = pindexBest;
\r
2665 unsigned int nBits = GetNextWorkRequired(pindexPrev);
\r
2669 // Create coinbase tx
\r
2671 CTransaction txNew;
\r
2672 txNew.vin.resize(1);
\r
2673 txNew.vin[0].prevout.SetNull();
\r
2674 txNew.vin[0].scriptSig << nBits << ++bnExtraNonce;
\r
2675 txNew.vout.resize(1);
\r
2676 txNew.vout[0].scriptPubKey << key.GetPubKey() << OP_CHECKSIG;
\r
2680 // Create new block
\r
2682 auto_ptr<CBlock> pblock(new CBlock());
\r
2683 if (!pblock.get())
\r
2686 // Add our coinbase tx as first transaction
\r
2687 pblock->vtx.push_back(txNew);
\r
2689 // Collect the latest transactions into the block
\r
2691 CRITICAL_BLOCK(cs_main)
\r
2692 CRITICAL_BLOCK(cs_mapTransactions)
\r
2695 map<uint256, CTxIndex> mapTestPool;
\r
2696 vector<char> vfAlreadyAdded(mapTransactions.size());
\r
2697 bool fFoundSomething = true;
\r
2698 unsigned int nBlockSize = 0;
\r
2699 while (fFoundSomething && nBlockSize < MAX_SIZE/2)
\r
2701 fFoundSomething = false;
\r
2702 unsigned int n = 0;
\r
2703 for (map<uint256, CTransaction>::iterator mi = mapTransactions.begin(); mi != mapTransactions.end(); ++mi, ++n)
\r
2705 if (vfAlreadyAdded[n])
\r
2707 CTransaction& tx = (*mi).second;
\r
2708 if (tx.IsCoinBase() || !tx.IsFinal())
\r
2710 unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK);
\r
2711 if (nBlockSize + nTxSize >= MAX_BLOCK_SIZE - 10000)
\r
2714 // Transaction fee based on block size
\r
2715 int64 nMinFee = tx.GetMinFee(nBlockSize);
\r
2717 map<uint256, CTxIndex> mapTestPoolTmp(mapTestPool);
\r
2718 if (!tx.ConnectInputs(txdb, mapTestPoolTmp, CDiskTxPos(1,1,1), pindexPrev, nFees, false, true, nMinFee))
\r
2720 swap(mapTestPool, mapTestPoolTmp);
\r
2722 pblock->vtx.push_back(tx);
\r
2723 nBlockSize += nTxSize;
\r
2724 vfAlreadyAdded[n] = true;
\r
2725 fFoundSomething = true;
\r
2729 pblock->nBits = nBits;
\r
2730 pblock->vtx[0].vout[0].nValue = pblock->GetBlockValue(pindexPrev->nHeight+1, nFees);
\r
2731 printf("Running BitcoinMiner with %d transactions in block\n", pblock->vtx.size());
\r
2735 // Prebuild hash buffer
\r
2737 struct tmpworkspace
\r
2742 uint256 hashPrevBlock;
\r
2743 uint256 hashMerkleRoot;
\r
2744 unsigned int nTime;
\r
2745 unsigned int nBits;
\r
2746 unsigned int nNonce;
\r
2749 unsigned char pchPadding0[64];
\r
2751 unsigned char pchPadding1[64];
\r
2753 char tmpbuf[sizeof(tmpworkspace)+16];
\r
2754 tmpworkspace& tmp = *(tmpworkspace*)alignup<16>(tmpbuf);
\r
2756 tmp.block.nVersion = pblock->nVersion;
\r
2757 tmp.block.hashPrevBlock = pblock->hashPrevBlock = (pindexPrev ? pindexPrev->GetBlockHash() : 0);
\r
2758 tmp.block.hashMerkleRoot = pblock->hashMerkleRoot = pblock->BuildMerkleTree();
\r
2759 tmp.block.nTime = pblock->nTime = max((pindexPrev ? pindexPrev->GetMedianTimePast()+1 : 0), GetAdjustedTime());
\r
2760 tmp.block.nBits = pblock->nBits = nBits;
\r
2761 tmp.block.nNonce = pblock->nNonce = 0;
\r
2763 unsigned int nBlocks0 = FormatHashBlocks(&tmp.block, sizeof(tmp.block));
\r
2764 unsigned int nBlocks1 = FormatHashBlocks(&tmp.hash1, sizeof(tmp.hash1));
\r
2766 // Byte swap all the input buffer
\r
2767 for (int i = 0; i < sizeof(tmp)/4; i++)
\r
2768 ((unsigned int*)&tmp)[i] = ByteReverse(((unsigned int*)&tmp)[i]);
\r
2770 // Precalc the first half of the first hash, which stays constant
\r
2771 uint256 midstatebuf[2];
\r
2772 uint256& midstate = *alignup<16>(midstatebuf);
\r
2773 SHA256Transform(&midstate, &tmp.block, pSHA256InitState);
\r
2779 bool f4WaySSE2 = mapArgs.count("-4way");
\r
2780 int64 nStart = GetTime();
\r
2781 uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
\r
2782 uint256 hashbuf[2];
\r
2783 uint256& hash = *alignup<16>(hashbuf);
\r
2786 #ifdef FOURWAYSSE2
\r
2789 // tcatm's 4-way SSE2 SHA-256
\r
2790 tmp.block.nNonce += NPAR;
\r
2791 unsigned int thashbuf[9][NPAR];
\r
2792 unsigned int (&thash)[9][NPAR] = *alignup<16>(&thashbuf);
\r
2793 Double_BlockSHA256((char*)&tmp.block + 64, &tmp.hash1, &midstate, thash, pSHA256InitState);
\r
2794 ((unsigned short*)&hash)[14] = 0xffff;
\r
2795 for (int j = 0; j < NPAR; j++)
\r
2797 if (thash[7][j] == 0)
\r
2799 for (int i = 0; i < sizeof(hash)/4; i++)
\r
2800 ((unsigned int*)&hash)[i] = thash[i][j];
\r
2801 pblock->nNonce = ByteReverse(tmp.block.nNonce + j);
\r
2808 // Crypto++ SHA-256
\r
2809 tmp.block.nNonce++;
\r
2810 SHA256Transform(&tmp.hash1, (char*)&tmp.block + 64, &midstate);
\r
2811 SHA256Transform(&hash, &tmp.hash1, pSHA256InitState);
\r
2814 if (((unsigned short*)&hash)[14] == 0)
\r
2816 // Byte swap the result after preliminary check
\r
2817 for (int i = 0; i < sizeof(hash)/4; i++)
\r
2818 ((unsigned int*)&hash)[i] = ByteReverse(((unsigned int*)&hash)[i]);
\r
2820 if (hash <= hashTarget)
\r
2822 #ifdef FOURWAYSSE2
\r
2825 pblock->nNonce = ByteReverse(tmp.block.nNonce);
\r
2826 assert(hash == pblock->GetHash());
\r
2829 printf("BitcoinMiner:\n");
\r
2830 printf("proof-of-work found \n hash: %s \ntarget: %s\n", hash.GetHex().c_str(), hashTarget.GetHex().c_str());
\r
2832 printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());
\r
2833 printf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue).c_str());
\r
2835 SetThreadPriority(THREAD_PRIORITY_NORMAL);
\r
2836 CRITICAL_BLOCK(cs_main)
\r
2838 if (pindexPrev == pindexBest)
\r
2845 // Track how many getdata requests this block gets
\r
2846 CRITICAL_BLOCK(cs_mapRequestCount)
\r
2847 mapRequestCount[pblock->GetHash()] = 0;
\r
2849 // Process this block the same as if we had received it from another node
\r
2850 if (!ProcessBlock(NULL, pblock.release()))
\r
2851 printf("ERROR in BitcoinMiner, ProcessBlock, block not accepted\n");
\r
2854 SetThreadPriority(THREAD_PRIORITY_LOWEST);
\r
2861 // Update nTime every few seconds
\r
2862 const unsigned int nMask = 0xffff;
\r
2863 const int nHashesPerCycle = (nMask+1);
\r
2864 if ((tmp.block.nNonce & nMask) == 0)
\r
2866 // Meter hashes/sec
\r
2867 static int nCycleCounter;
\r
2868 if (nHPSTimerStart == 0)
\r
2870 nHPSTimerStart = GetTimeMillis();
\r
2871 nCycleCounter = 0;
\r
2875 if (GetTimeMillis() - nHPSTimerStart > 4000)
\r
2877 static CCriticalSection cs;
\r
2878 CRITICAL_BLOCK(cs)
\r
2880 if (GetTimeMillis() - nHPSTimerStart > 4000)
\r
2882 dHashesPerSec = 1000.0 * nHashesPerCycle * nCycleCounter / (GetTimeMillis() - nHPSTimerStart);
\r
2883 nHPSTimerStart = GetTimeMillis();
\r
2884 nCycleCounter = 0;
\r
2885 string strStatus = strprintf(" %.0f khash/s", dHashesPerSec/1000.0);
\r
2886 UIThreadCall(bind(CalledSetStatusBar, strStatus, 0));
\r
2887 static int64 nLogTime;
\r
2888 if (GetTime() - nLogTime > 30 * 60)
\r
2890 nLogTime = GetTime();
\r
2891 printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());
\r
2892 printf("hashmeter %3d CPUs %6.0f khash/s\n", vnThreadsRunning[3], dHashesPerSec/1000.0);
\r
2898 // Check for stop or if block needs to be rebuilt
\r
2901 if (!fGenerateBitcoins)
\r
2903 if (fLimitProcessors && vnThreadsRunning[3] > nLimitProcessors)
\r
2905 if (vNodes.empty())
\r
2907 if (tmp.block.nNonce == 0)
\r
2909 if (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60)
\r
2911 if (pindexPrev != pindexBest)
\r
2914 pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
\r
2915 tmp.block.nTime = ByteReverse(pblock->nTime);
\r
2938 //////////////////////////////////////////////////////////////////////////////
\r
2944 int64 GetBalance()
\r
2946 int64 nStart = GetTimeMillis();
\r
2949 CRITICAL_BLOCK(cs_mapWallet)
\r
2951 for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
\r
2953 CWalletTx* pcoin = &(*it).second;
\r
2954 if (!pcoin->IsFinal() || pcoin->fSpent)
\r
2956 nTotal += pcoin->GetCredit(true);
\r
2960 //printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart);
\r
2965 int GetRandInt(int nMax)
\r
2967 return GetRand(nMax);
\r
2970 bool SelectCoins(int64 nTargetValue, set<CWalletTx*>& setCoinsRet)
\r
2972 setCoinsRet.clear();
\r
2974 // List of values less than target
\r
2975 int64 nLowestLarger = INT64_MAX;
\r
2976 CWalletTx* pcoinLowestLarger = NULL;
\r
2977 vector<pair<int64, CWalletTx*> > vValue;
\r
2978 int64 nTotalLower = 0;
\r
2980 CRITICAL_BLOCK(cs_mapWallet)
\r
2982 vector<CWalletTx*> vCoins;
\r
2983 vCoins.reserve(mapWallet.size());
\r
2984 for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
\r
2985 vCoins.push_back(&(*it).second);
\r
2986 random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
\r
2988 foreach(CWalletTx* pcoin, vCoins)
\r
2990 if (!pcoin->IsFinal() || pcoin->fSpent)
\r
2992 int64 n = pcoin->GetCredit();
\r
2995 if (n < nTargetValue)
\r
2997 vValue.push_back(make_pair(n, pcoin));
\r
3000 else if (n == nTargetValue)
\r
3002 setCoinsRet.insert(pcoin);
\r
3005 else if (n < nLowestLarger)
\r
3007 nLowestLarger = n;
\r
3008 pcoinLowestLarger = pcoin;
\r
3013 if (nTotalLower < nTargetValue)
\r
3015 if (pcoinLowestLarger == NULL)
\r
3017 setCoinsRet.insert(pcoinLowestLarger);
\r
3021 // Solve subset sum by stochastic approximation
\r
3022 sort(vValue.rbegin(), vValue.rend());
\r
3023 vector<char> vfIncluded;
\r
3024 vector<char> vfBest(vValue.size(), true);
\r
3025 int64 nBest = nTotalLower;
\r
3027 for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
\r
3029 vfIncluded.assign(vValue.size(), false);
\r
3031 bool fReachedTarget = false;
\r
3032 for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
\r
3034 for (int i = 0; i < vValue.size(); i++)
\r
3036 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
\r
3038 nTotal += vValue[i].first;
\r
3039 vfIncluded[i] = true;
\r
3040 if (nTotal >= nTargetValue)
\r
3042 fReachedTarget = true;
\r
3043 if (nTotal < nBest)
\r
3046 vfBest = vfIncluded;
\r
3048 nTotal -= vValue[i].first;
\r
3049 vfIncluded[i] = false;
\r
3056 // If the next larger is still closer, return it
\r
3057 if (pcoinLowestLarger && nLowestLarger - nTargetValue <= nBest - nTargetValue)
\r
3058 setCoinsRet.insert(pcoinLowestLarger);
\r
3061 for (int i = 0; i < vValue.size(); i++)
\r
3063 setCoinsRet.insert(vValue[i].second);
\r
3066 printf("SelectCoins() best subset: ");
\r
3067 for (int i = 0; i < vValue.size(); i++)
\r
3069 printf("%s ", FormatMoney(vValue[i].first).c_str());
\r
3070 printf("total %s\n", FormatMoney(nBest).c_str());
\r
3079 bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CKey& keyRet, int64& nFeeRequiredRet)
\r
3081 nFeeRequiredRet = 0;
\r
3082 CRITICAL_BLOCK(cs_main)
\r
3084 // txdb must be opened before the mapWallet lock
\r
3086 CRITICAL_BLOCK(cs_mapWallet)
\r
3088 int64 nFee = nTransactionFee;
\r
3091 wtxNew.vin.clear();
\r
3092 wtxNew.vout.clear();
\r
3093 wtxNew.fFromMe = true;
\r
3096 int64 nValueOut = nValue;
\r
3097 int64 nTotalValue = nValue + nFee;
\r
3099 // Choose coins to use
\r
3100 set<CWalletTx*> setCoins;
\r
3101 if (!SelectCoins(nTotalValue, setCoins))
\r
3103 int64 nValueIn = 0;
\r
3104 foreach(CWalletTx* pcoin, setCoins)
\r
3105 nValueIn += pcoin->GetCredit();
\r
3107 // Fill a vout to the payee
\r
3108 bool fChangeFirst = GetRand(2);
\r
3109 if (!fChangeFirst)
\r
3110 wtxNew.vout.push_back(CTxOut(nValueOut, scriptPubKey));
\r
3112 // Fill a vout back to self with any change
\r
3113 if (nValueIn > nTotalValue)
\r
3115 // Note: We use a new key here to keep it from being obvious which side is the change.
\r
3116 // The drawback is that by not reusing a previous key, the change may be lost if a
\r
3117 // backup is restored, if the backup doesn't have the new private key for the change.
\r
3118 // If we reused the old key, it would be possible to add code to look for and
\r
3119 // rediscover unknown transactions that were written with keys of ours to recover
\r
3120 // post-backup change.
\r
3122 // New private key
\r
3123 if (keyRet.IsNull())
\r
3124 keyRet.MakeNewKey();
\r
3126 // Fill a vout to ourself, using same address type as the payment
\r
3127 CScript scriptChange;
\r
3128 if (scriptPubKey.GetBitcoinAddressHash160() != 0)
\r
3129 scriptChange.SetBitcoinAddress(keyRet.GetPubKey());
\r
3131 scriptChange << keyRet.GetPubKey() << OP_CHECKSIG;
\r
3132 wtxNew.vout.push_back(CTxOut(nValueIn - nTotalValue, scriptChange));
\r
3135 // Fill a vout to the payee
\r
3137 wtxNew.vout.push_back(CTxOut(nValueOut, scriptPubKey));
\r
3140 foreach(CWalletTx* pcoin, setCoins)
\r
3141 for (int nOut = 0; nOut < pcoin->vout.size(); nOut++)
\r
3142 if (pcoin->vout[nOut].IsMine())
\r
3143 wtxNew.vin.push_back(CTxIn(pcoin->GetHash(), nOut));
\r
3147 foreach(CWalletTx* pcoin, setCoins)
\r
3148 for (int nOut = 0; nOut < pcoin->vout.size(); nOut++)
\r
3149 if (pcoin->vout[nOut].IsMine())
\r
3150 if (!SignSignature(*pcoin, wtxNew, nIn++))
\r
3153 // Check that enough fee is included
\r
3154 if (nFee < wtxNew.GetMinFee())
\r
3156 nFee = nFeeRequiredRet = wtxNew.GetMinFee();
\r
3160 // Fill vtxPrev by copying from previous transactions vtxPrev
\r
3161 wtxNew.AddSupportingTransactions(txdb);
\r
3162 wtxNew.fTimeReceivedIsTxTime = true;
\r
3171 // Call after CreateTransaction unless you want to abort
\r
3172 bool CommitTransaction(CWalletTx& wtxNew, const CKey& key)
\r
3174 CRITICAL_BLOCK(cs_main)
\r
3176 printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
\r
3177 CRITICAL_BLOCK(cs_mapWallet)
\r
3179 // This is only to keep the database open to defeat the auto-flush for the
\r
3180 // duration of this scope. This is the only place where this optimization
\r
3181 // maybe makes sense; please don't do it anywhere else.
\r
3182 CWalletDB walletdb("r");
\r
3184 // Add the change's private key to wallet
\r
3185 if (!key.IsNull() && !AddKey(key))
\r
3186 throw runtime_error("CommitTransaction() : AddKey failed\n");
\r
3188 // Add tx to wallet, because if it has change it's also ours,
\r
3189 // otherwise just for transaction history.
\r
3190 AddToWallet(wtxNew);
\r
3192 // Mark old coins as spent
\r
3193 set<CWalletTx*> setCoins;
\r
3194 foreach(const CTxIn& txin, wtxNew.vin)
\r
3195 setCoins.insert(&mapWallet[txin.prevout.hash]);
\r
3196 foreach(CWalletTx* pcoin, setCoins)
\r
3198 pcoin->fSpent = true;
\r
3199 pcoin->WriteToDisk();
\r
3200 vWalletUpdated.push_back(pcoin->GetHash());
\r
3204 // Track how many getdata requests our transaction gets
\r
3205 CRITICAL_BLOCK(cs_mapRequestCount)
\r
3206 mapRequestCount[wtxNew.GetHash()] = 0;
\r
3209 if (!wtxNew.AcceptTransaction())
\r
3211 // This must not fail. The transaction has already been signed and recorded.
\r
3212 printf("CommitTransaction() : Error: Transaction not valid");
\r
3215 wtxNew.RelayWalletTransaction();
\r
3217 MainFrameRepaint();
\r
3224 string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
\r
3226 CRITICAL_BLOCK(cs_main)
\r
3229 int64 nFeeRequired;
\r
3230 if (!CreateTransaction(scriptPubKey, nValue, wtxNew, key, nFeeRequired))
\r
3233 if (nValue + nFeeRequired > GetBalance())
\r
3234 strError = strprintf(_("Error: This is an oversized transaction that requires a transaction fee of %s "), FormatMoney(nFeeRequired).c_str());
\r
3236 strError = _("Error: Transaction creation failed ");
\r
3237 printf("SendMoney() : %s", strError.c_str());
\r
3241 if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
\r
3244 if (!CommitTransaction(wtxNew, key))
\r
3245 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.");
\r
3247 MainFrameRepaint();
\r
3253 string SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
\r
3257 return _("Invalid amount");
\r
3258 if (nValue + nTransactionFee > GetBalance())
\r
3259 return _("Insufficient funds");
\r
3261 // Parse bitcoin address
\r
3262 CScript scriptPubKey;
\r
3263 if (!scriptPubKey.SetBitcoinAddress(strAddress))
\r
3264 return _("Invalid bitcoin address");
\r
3266 return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
\r
git://git.novaco.in / novacoin.git / blob