1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Distributed under the MIT/X11 software license, see the accompanying
3 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
17 static const unsigned int MAX_SIZE = 0x02000000;
18 static const unsigned int MAX_BLOCK_SIZE = 1000000;
19 static const int64 COIN = 100000000;
20 static const int64 CENT = 1000000;
21 static const int COINBASE_MATURITY = 100;
23 static const CBigNum bnProofOfWorkLimit(~uint256(0) >> 32);
30 extern CCriticalSection cs_main;
31 extern map<uint256, CBlockIndex*> mapBlockIndex;
32 extern const uint256 hashGenesisBlock;
33 extern CBlockIndex* pindexGenesisBlock;
34 extern int nBestHeight;
35 extern uint256 hashBestChain;
36 extern CBlockIndex* pindexBest;
37 extern unsigned int nTransactionsUpdated;
38 extern map<uint256, int> mapRequestCount;
39 extern CCriticalSection cs_mapRequestCount;
40 extern map<string, string> mapAddressBook;
41 extern CCriticalSection cs_mapAddressBook;
42 extern vector<unsigned char> vchDefaultKey;
45 extern int fGenerateBitcoins;
46 extern int64 nTransactionFee;
47 extern CAddress addrIncoming;
48 extern int fLimitProcessors;
49 extern int nLimitProcessors;
50 extern int fMinimizeToTray;
51 extern int fMinimizeOnClose;
59 bool CheckDiskSpace(int64 nAdditionalBytes=0);
60 FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode="rb");
61 FILE* AppendBlockFile(unsigned int& nFileRet);
62 bool AddKey(const CKey& key);
63 vector<unsigned char> GenerateNewKey();
64 bool AddToWallet(const CWalletTx& wtxIn);
65 void WalletUpdateSpent(const COutPoint& prevout);
66 void ReacceptWalletTransactions();
67 bool LoadBlockIndex(bool fAllowNew=true);
68 void PrintBlockTree();
69 bool ProcessMessages(CNode* pfrom);
70 bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv);
71 bool SendMessages(CNode* pto, bool fSendTrickle);
73 bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CKey& keyRet, int64& nFeeRequiredRet);
74 bool CommitTransaction(CWalletTx& wtxNew, const CKey& key);
75 bool BroadcastTransaction(CWalletTx& wtxNew);
76 string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
77 string SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
78 void GenerateBitcoins(bool fGenerate);
79 void ThreadBitcoinMiner(void* parg);
97 unsigned int nBlockPos;
105 CDiskTxPos(unsigned int nFileIn, unsigned int nBlockPosIn, unsigned int nTxPosIn)
108 nBlockPos = nBlockPosIn;
112 IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
113 void SetNull() { nFile = -1; nBlockPos = 0; nTxPos = 0; }
114 bool IsNull() const { return (nFile == -1); }
116 friend bool operator==(const CDiskTxPos& a, const CDiskTxPos& b)
118 return (a.nFile == b.nFile &&
119 a.nBlockPos == b.nBlockPos &&
120 a.nTxPos == b.nTxPos);
123 friend bool operator!=(const CDiskTxPos& a, const CDiskTxPos& b)
128 string ToString() const
131 return strprintf("null");
133 return strprintf("(nFile=%d, nBlockPos=%d, nTxPos=%d)", nFile, nBlockPos, nTxPos);
138 printf("%s", ToString().c_str());
151 CInPoint() { SetNull(); }
152 CInPoint(CTransaction* ptxIn, unsigned int nIn) { ptx = ptxIn; n = nIn; }
153 void SetNull() { ptx = NULL; n = -1; }
154 bool IsNull() const { return (ptx == NULL && n == -1); }
166 COutPoint() { SetNull(); }
167 COutPoint(uint256 hashIn, unsigned int nIn) { hash = hashIn; n = nIn; }
168 IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
169 void SetNull() { hash = 0; n = -1; }
170 bool IsNull() const { return (hash == 0 && n == -1); }
172 friend bool operator<(const COutPoint& a, const COutPoint& b)
174 return (a.hash < b.hash || (a.hash == b.hash && a.n < b.n));
177 friend bool operator==(const COutPoint& a, const COutPoint& b)
179 return (a.hash == b.hash && a.n == b.n);
182 friend bool operator!=(const COutPoint& a, const COutPoint& b)
187 string ToString() const
189 return strprintf("COutPoint(%s, %d)", hash.ToString().substr(0,6).c_str(), n);
194 printf("%s\n", ToString().c_str());
202 // An input of a transaction. It contains the location of the previous
203 // transaction's output that it claims and a signature that matches the
204 // output's public key.
211 unsigned int nSequence;
215 nSequence = UINT_MAX;
218 explicit CTxIn(COutPoint prevoutIn, CScript scriptSigIn=CScript(), unsigned int nSequenceIn=UINT_MAX)
221 scriptSig = scriptSigIn;
222 nSequence = nSequenceIn;
225 CTxIn(uint256 hashPrevTx, unsigned int nOut, CScript scriptSigIn=CScript(), unsigned int nSequenceIn=UINT_MAX)
227 prevout = COutPoint(hashPrevTx, nOut);
228 scriptSig = scriptSigIn;
229 nSequence = nSequenceIn;
235 READWRITE(scriptSig);
236 READWRITE(nSequence);
241 return (nSequence == UINT_MAX);
244 friend bool operator==(const CTxIn& a, const CTxIn& b)
246 return (a.prevout == b.prevout &&
247 a.scriptSig == b.scriptSig &&
248 a.nSequence == b.nSequence);
251 friend bool operator!=(const CTxIn& a, const CTxIn& b)
256 string ToString() const
259 str += strprintf("CTxIn(");
260 str += prevout.ToString();
261 if (prevout.IsNull())
262 str += strprintf(", coinbase %s", HexStr(scriptSig.begin(), scriptSig.end(), false).c_str());
264 str += strprintf(", scriptSig=%s", scriptSig.ToString().substr(0,24).c_str());
265 if (nSequence != UINT_MAX)
266 str += strprintf(", nSequence=%u", nSequence);
273 printf("%s\n", ToString().c_str());
277 int64 GetDebit() const;
284 // An output of a transaction. It contains the public key that the next input
285 // must be able to sign with to claim it.
291 CScript scriptPubKey;
299 CTxOut(int64 nValueIn, CScript scriptPubKeyIn)
302 scriptPubKey = scriptPubKeyIn;
308 READWRITE(scriptPubKey);
314 scriptPubKey.clear();
319 return (nValue == -1);
322 uint256 GetHash() const
324 return SerializeHash(*this);
329 return ::IsMine(scriptPubKey);
332 int64 GetCredit() const
339 friend bool operator==(const CTxOut& a, const CTxOut& b)
341 return (a.nValue == b.nValue &&
342 a.scriptPubKey == b.scriptPubKey);
345 friend bool operator!=(const CTxOut& a, const CTxOut& b)
350 string ToString() const
352 if (scriptPubKey.size() < 6)
353 return "CTxOut(error)";
354 return strprintf("CTxOut(nValue=%"PRI64d".%08"PRI64d", scriptPubKey=%s)", nValue / COIN, nValue % COIN, scriptPubKey.ToString().substr(0,24).c_str());
359 printf("%s\n", ToString().c_str());
367 // The basic transaction that is broadcasted on the network and contained in
368 // blocks. A transaction can contain multiple inputs and outputs.
376 unsigned int nLockTime;
386 READWRITE(this->nVersion);
387 nVersion = this->nVersion;
390 READWRITE(nLockTime);
403 return (vin.empty() && vout.empty());
406 uint256 GetHash() const
408 return SerializeHash(*this);
411 bool IsFinal(int64 nBlockTime=0) const
413 // Time based nLockTime implemented in 0.1.6,
414 // do not use time based until most 0.1.5 nodes have upgraded.
418 nBlockTime = GetAdjustedTime();
419 if (nLockTime < (nLockTime < 500000000 ? nBestHeight : nBlockTime))
421 foreach(const CTxIn& txin, vin)
427 bool IsNewerThan(const CTransaction& old) const
429 if (vin.size() != old.vin.size())
431 for (int i = 0; i < vin.size(); i++)
432 if (vin[i].prevout != old.vin[i].prevout)
436 unsigned int nLowest = UINT_MAX;
437 for (int i = 0; i < vin.size(); i++)
439 if (vin[i].nSequence != old.vin[i].nSequence)
441 if (vin[i].nSequence <= nLowest)
444 nLowest = vin[i].nSequence;
446 if (old.vin[i].nSequence < nLowest)
449 nLowest = old.vin[i].nSequence;
456 bool IsCoinBase() const
458 return (vin.size() == 1 && vin[0].prevout.IsNull());
461 bool CheckTransaction() const
463 // Basic checks that don't depend on any context
464 if (vin.empty() || vout.empty())
465 return error("CTransaction::CheckTransaction() : vin or vout empty");
467 // Check for negative values
468 foreach(const CTxOut& txout, vout)
469 if (txout.nValue < 0)
470 return error("CTransaction::CheckTransaction() : txout.nValue negative");
474 if (vin[0].scriptSig.size() < 2 || vin[0].scriptSig.size() > 100)
475 return error("CTransaction::CheckTransaction() : coinbase script size");
479 foreach(const CTxIn& txin, vin)
480 if (txin.prevout.IsNull())
481 return error("CTransaction::CheckTransaction() : prevout is null");
489 foreach(const CTxOut& txout, vout)
495 int64 GetDebit() const
498 foreach(const CTxIn& txin, vin)
499 nDebit += txin.GetDebit();
503 int64 GetCredit() const
506 foreach(const CTxOut& txout, vout)
507 nCredit += txout.GetCredit();
511 int64 GetValueOut() const
514 foreach(const CTxOut& txout, vout)
516 if (txout.nValue < 0)
517 throw runtime_error("CTransaction::GetValueOut() : negative value");
518 nValueOut += txout.nValue;
523 int64 GetMinFee(unsigned int nBlockSize=1) const
525 // Base fee is 1 cent per kilobyte
526 unsigned int nBytes = ::GetSerializeSize(*this, SER_NETWORK);
527 int64 nMinFee = (1 + (int64)nBytes / 1000) * CENT;
529 // Transactions under 60K are free as long as block size is under 80K
530 // (about 27,000bc if made of 50bc inputs)
531 if (nBytes < 60000 && nBlockSize < 80000)
534 // Transactions under 3K are free as long as block size is under 200K
535 if (nBytes < 3000 && nBlockSize < 200000)
538 // To limit dust spam, require a 0.01 fee if any output is less than 0.01
540 foreach(const CTxOut& txout, vout)
541 if (txout.nValue < CENT)
549 bool ReadFromDisk(CDiskTxPos pos, FILE** pfileRet=NULL)
551 CAutoFile filein = OpenBlockFile(pos.nFile, 0, pfileRet ? "rb+" : "rb");
553 return error("CTransaction::ReadFromDisk() : OpenBlockFile failed");
556 if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
557 return error("CTransaction::ReadFromDisk() : fseek failed");
560 // Return file pointer
563 if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
564 return error("CTransaction::ReadFromDisk() : second fseek failed");
565 *pfileRet = filein.release();
571 friend bool operator==(const CTransaction& a, const CTransaction& b)
573 return (a.nVersion == b.nVersion &&
576 a.nLockTime == b.nLockTime);
579 friend bool operator!=(const CTransaction& a, const CTransaction& b)
585 string ToString() const
588 str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%d, vout.size=%d, nLockTime=%d)\n",
589 GetHash().ToString().substr(0,6).c_str(),
594 for (int i = 0; i < vin.size(); i++)
595 str += " " + vin[i].ToString() + "\n";
596 for (int i = 0; i < vout.size(); i++)
597 str += " " + vout[i].ToString() + "\n";
603 printf("%s", ToString().c_str());
608 bool DisconnectInputs(CTxDB& txdb);
609 bool ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPool, CDiskTxPos posThisTx, int nHeight, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee=0);
610 bool ClientConnectInputs();
612 bool AcceptTransaction(CTxDB& txdb, bool fCheckInputs=true, bool* pfMissingInputs=NULL);
614 bool AcceptTransaction(bool fCheckInputs=true, bool* pfMissingInputs=NULL)
617 return AcceptTransaction(txdb, fCheckInputs, pfMissingInputs);
621 bool AddToMemoryPool();
623 bool RemoveFromMemoryPool();
631 // A transaction with a merkle branch linking it to the block chain
633 class CMerkleTx : public CTransaction
637 vector<uint256> vMerkleBranch;
641 mutable bool fMerkleVerified;
642 mutable bool fGetCreditCached;
643 mutable int64 nGetCreditCached;
651 CMerkleTx(const CTransaction& txIn) : CTransaction(txIn)
660 fMerkleVerified = false;
661 fGetCreditCached = false;
662 nGetCreditCached = 0;
667 nSerSize += SerReadWrite(s, *(CTransaction*)this, nType, nVersion, ser_action);
668 nVersion = this->nVersion;
669 READWRITE(hashBlock);
670 READWRITE(vMerkleBranch);
674 int64 GetCredit(bool fUseCache=false) const
676 // Must wait until coinbase is safely deep enough in the chain before valuing it
677 if (IsCoinBase() && GetBlocksToMaturity() > 0)
680 // GetBalance can assume transactions in mapWallet won't change
681 if (fUseCache && fGetCreditCached)
682 return nGetCreditCached;
683 nGetCreditCached = CTransaction::GetCredit();
684 fGetCreditCached = true;
685 return nGetCreditCached;
689 int SetMerkleBranch(const CBlock* pblock=NULL);
690 int GetDepthInMainChain(int& nHeightRet) const;
691 int GetDepthInMainChain() const { int nHeight; return GetDepthInMainChain(nHeight); }
692 bool IsInMainChain() const { return GetDepthInMainChain() > 0; }
693 int GetBlocksToMaturity() const;
694 bool AcceptTransaction(CTxDB& txdb, bool fCheckInputs=true);
695 bool AcceptTransaction() { CTxDB txdb("r"); return AcceptTransaction(txdb); }
702 // A transaction with a bunch of additional info that only the owner cares
703 // about. It includes any unrecorded transactions needed to link it back
704 // to the block chain.
706 class CWalletTx : public CMerkleTx
709 vector<CMerkleTx> vtxPrev;
710 map<string, string> mapValue;
711 vector<pair<string, string> > vOrderForm;
712 unsigned int fTimeReceivedIsTxTime;
713 unsigned int nTimeReceived; // time received by this node
716 //// probably need to sign the order info so know it came from payer
718 // memory only UI hints
719 mutable unsigned int nTimeDisplayed;
720 mutable int nLinesDisplayed;
728 CWalletTx(const CMerkleTx& txIn) : CMerkleTx(txIn)
733 CWalletTx(const CTransaction& txIn) : CMerkleTx(txIn)
740 fTimeReceivedIsTxTime = false;
750 nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion, ser_action);
751 nVersion = this->nVersion;
754 READWRITE(vOrderForm);
755 READWRITE(fTimeReceivedIsTxTime);
756 READWRITE(nTimeReceived);
763 return CWalletDB().WriteTx(GetHash(), *this);
767 int64 GetTxTime() const;
768 int GetRequestCount() const;
770 void AddSupportingTransactions(CTxDB& txdb);
772 bool AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs=true);
773 bool AcceptWalletTransaction() { CTxDB txdb("r"); return AcceptWalletTransaction(txdb); }
775 void RelayWalletTransaction(CTxDB& txdb);
776 void RelayWalletTransaction() { CTxDB txdb("r"); RelayWalletTransaction(txdb); }
783 // A txdb record that contains the disk location of a transaction and the
784 // locations of transactions that spend its outputs. vSpent is really only
785 // used as a flag, but having the location is very helpful for debugging.
791 vector<CDiskTxPos> vSpent;
798 CTxIndex(const CDiskTxPos& posIn, unsigned int nOutputs)
801 vSpent.resize(nOutputs);
806 if (!(nType & SER_GETHASH))
823 friend bool operator==(const CTxIndex& a, const CTxIndex& b)
825 if (a.pos != b.pos || a.vSpent.size() != b.vSpent.size())
827 for (int i = 0; i < a.vSpent.size(); i++)
828 if (a.vSpent[i] != b.vSpent[i])
833 friend bool operator!=(const CTxIndex& a, const CTxIndex& b)
844 // Nodes collect new transactions into a block, hash them into a hash tree,
845 // and scan through nonce values to make the block's hash satisfy proof-of-work
846 // requirements. When they solve the proof-of-work, they broadcast the block
847 // to everyone and the block is added to the block chain. The first transaction
848 // in the block is a special one that creates a new coin owned by the creator
851 // Blocks are appended to blk0001.dat files on disk. Their location on disk
852 // is indexed by CBlockIndex objects in memory.
859 uint256 hashPrevBlock;
860 uint256 hashMerkleRoot;
866 vector<CTransaction> vtx;
869 mutable vector<uint256> vMerkleTree;
879 READWRITE(this->nVersion);
880 nVersion = this->nVersion;
881 READWRITE(hashPrevBlock);
882 READWRITE(hashMerkleRoot);
887 // ConnectBlock depends on vtx being last so it can calculate offset
888 if (!(nType & (SER_GETHASH|SER_BLOCKHEADERONLY)))
891 const_cast<CBlock*>(this)->vtx.clear();
911 uint256 GetHash() const
913 return Hash(BEGIN(nVersion), END(nNonce));
917 uint256 BuildMerkleTree() const
920 foreach(const CTransaction& tx, vtx)
921 vMerkleTree.push_back(tx.GetHash());
923 for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2)
925 for (int i = 0; i < nSize; i += 2)
927 int i2 = min(i+1, nSize-1);
928 vMerkleTree.push_back(Hash(BEGIN(vMerkleTree[j+i]), END(vMerkleTree[j+i]),
929 BEGIN(vMerkleTree[j+i2]), END(vMerkleTree[j+i2])));
933 return (vMerkleTree.empty() ? 0 : vMerkleTree.back());
936 vector<uint256> GetMerkleBranch(int nIndex) const
938 if (vMerkleTree.empty())
940 vector<uint256> vMerkleBranch;
942 for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2)
944 int i = min(nIndex^1, nSize-1);
945 vMerkleBranch.push_back(vMerkleTree[j+i]);
949 return vMerkleBranch;
952 static uint256 CheckMerkleBranch(uint256 hash, const vector<uint256>& vMerkleBranch, int nIndex)
956 foreach(const uint256& otherside, vMerkleBranch)
959 hash = Hash(BEGIN(otherside), END(otherside), BEGIN(hash), END(hash));
961 hash = Hash(BEGIN(hash), END(hash), BEGIN(otherside), END(otherside));
968 bool WriteToDisk(bool fWriteTransactions, unsigned int& nFileRet, unsigned int& nBlockPosRet)
970 // Open history file to append
971 CAutoFile fileout = AppendBlockFile(nFileRet);
973 return error("CBlock::WriteToDisk() : AppendBlockFile failed");
974 if (!fWriteTransactions)
975 fileout.nType |= SER_BLOCKHEADERONLY;
977 // Write index header
978 unsigned int nSize = fileout.GetSerializeSize(*this);
979 fileout << FLATDATA(pchMessageStart) << nSize;
982 nBlockPosRet = ftell(fileout);
983 if (nBlockPosRet == -1)
984 return error("CBlock::WriteToDisk() : ftell failed");
987 // Flush stdio buffers and commit to disk before returning
990 _commit(_fileno(fileout));
992 fsync(fileno(fileout));
998 bool ReadFromDisk(unsigned int nFile, unsigned int nBlockPos, bool fReadTransactions=true)
1002 // Open history file to read
1003 CAutoFile filein = OpenBlockFile(nFile, nBlockPos, "rb");
1005 return error("CBlock::ReadFromDisk() : OpenBlockFile failed");
1006 if (!fReadTransactions)
1007 filein.nType |= SER_BLOCKHEADERONLY;
1013 if (CBigNum().SetCompact(nBits) > bnProofOfWorkLimit)
1014 return error("CBlock::ReadFromDisk() : nBits errors in block header");
1015 if (GetHash() > CBigNum().SetCompact(nBits).getuint256())
1016 return error("CBlock::ReadFromDisk() : GetHash() errors in block header");
1025 printf("CBlock(hash=%s, ver=%d, hashPrevBlock=%s, hashMerkleRoot=%s, nTime=%u, nBits=%08x, nNonce=%u, vtx=%d)\n",
1026 GetHash().ToString().substr(0,16).c_str(),
1028 hashPrevBlock.ToString().substr(0,16).c_str(),
1029 hashMerkleRoot.ToString().substr(0,6).c_str(),
1030 nTime, nBits, nNonce,
1032 for (int i = 0; i < vtx.size(); i++)
1037 printf(" vMerkleTree: ");
1038 for (int i = 0; i < vMerkleTree.size(); i++)
1039 printf("%s ", vMerkleTree[i].ToString().substr(0,6).c_str());
1044 int64 GetBlockValue(int64 nFees) const;
1045 bool DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex);
1046 bool ConnectBlock(CTxDB& txdb, CBlockIndex* pindex);
1047 bool ReadFromDisk(const CBlockIndex* blockindex, bool fReadTransactions=true);
1048 bool AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos);
1049 bool CheckBlock() const;
1059 // The block chain is a tree shaped structure starting with the
1060 // genesis block at the root, with each block potentially having multiple
1061 // candidates to be the next block. pprev and pnext link a path through the
1062 // main/longest chain. A blockindex may have multiple pprev pointing back
1063 // to it, but pnext will only point forward to the longest branch, or will
1064 // be null if the block is not part of the longest chain.
1069 const uint256* phashBlock;
1073 unsigned int nBlockPos;
1078 uint256 hashMerkleRoot;
1081 unsigned int nNonce;
1100 CBlockIndex(unsigned int nFileIn, unsigned int nBlockPosIn, CBlock& block)
1106 nBlockPos = nBlockPosIn;
1109 nVersion = block.nVersion;
1110 hashMerkleRoot = block.hashMerkleRoot;
1111 nTime = block.nTime;
1112 nBits = block.nBits;
1113 nNonce = block.nNonce;
1116 uint256 GetBlockHash() const
1121 bool IsInMainChain() const
1123 return (pnext || this == pindexBest);
1126 bool EraseBlockFromDisk()
1128 // Open history file
1129 CAutoFile fileout = OpenBlockFile(nFile, nBlockPos, "rb+");
1133 // Overwrite with empty null block
1141 enum { nMedianTimeSpan=11 };
1143 int64 GetMedianTimePast() const
1145 unsigned int pmedian[nMedianTimeSpan];
1146 unsigned int* pbegin = &pmedian[nMedianTimeSpan];
1147 unsigned int* pend = &pmedian[nMedianTimeSpan];
1149 const CBlockIndex* pindex = this;
1150 for (int i = 0; i < nMedianTimeSpan && pindex; i++, pindex = pindex->pprev)
1151 *(--pbegin) = pindex->nTime;
1154 return pbegin[(pend - pbegin)/2];
1157 int64 GetMedianTime() const
1159 const CBlockIndex* pindex = this;
1160 for (int i = 0; i < nMedianTimeSpan/2; i++)
1164 pindex = pindex->pnext;
1166 return pindex->GetMedianTimePast();
1171 string ToString() const
1173 return strprintf("CBlockIndex(nprev=%08x, pnext=%08x, nFile=%d, nBlockPos=%-6d nHeight=%d, merkle=%s, hashBlock=%s)",
1174 pprev, pnext, nFile, nBlockPos, nHeight,
1175 hashMerkleRoot.ToString().substr(0,6).c_str(),
1176 GetBlockHash().ToString().substr(0,16).c_str());
1181 printf("%s\n", ToString().c_str());
1188 // Used to marshal pointers into hashes for db storage.
1190 class CDiskBlockIndex : public CBlockIndex
1202 explicit CDiskBlockIndex(CBlockIndex* pindex) : CBlockIndex(*pindex)
1204 hashPrev = (pprev ? pprev->GetBlockHash() : 0);
1205 hashNext = (pnext ? pnext->GetBlockHash() : 0);
1210 if (!(nType & SER_GETHASH))
1211 READWRITE(nVersion);
1213 READWRITE(hashNext);
1215 READWRITE(nBlockPos);
1219 READWRITE(this->nVersion);
1220 READWRITE(hashPrev);
1221 READWRITE(hashMerkleRoot);
1227 uint256 GetBlockHash() const
1230 block.nVersion = nVersion;
1231 block.hashPrevBlock = hashPrev;
1232 block.hashMerkleRoot = hashMerkleRoot;
1233 block.nTime = nTime;
1234 block.nBits = nBits;
1235 block.nNonce = nNonce;
1236 return block.GetHash();
1240 string ToString() const
1242 string str = "CDiskBlockIndex(";
1243 str += CBlockIndex::ToString();
1244 str += strprintf("\n hashBlock=%s, hashPrev=%s, hashNext=%s)",
1245 GetBlockHash().ToString().c_str(),
1246 hashPrev.ToString().substr(0,16).c_str(),
1247 hashNext.ToString().substr(0,16).c_str());
1253 printf("%s\n", ToString().c_str());
1265 // Describes a place in the block chain to another node such that if the
1266 // other node doesn't have the same branch, it can find a recent common trunk.
1267 // The further back it is, the further before the fork it may be.
1272 vector<uint256> vHave;
1279 explicit CBlockLocator(const CBlockIndex* pindex)
1284 explicit CBlockLocator(uint256 hashBlock)
1286 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
1287 if (mi != mapBlockIndex.end())
1293 if (!(nType & SER_GETHASH))
1294 READWRITE(nVersion);
1298 void Set(const CBlockIndex* pindex)
1304 vHave.push_back(pindex->GetBlockHash());
1306 // Exponentially larger steps back
1307 for (int i = 0; pindex && i < nStep; i++)
1308 pindex = pindex->pprev;
1309 if (vHave.size() > 10)
1312 vHave.push_back(hashGenesisBlock);
1315 int GetDistanceBack()
1317 // Retrace how far back it was in the sender's branch
1320 foreach(const uint256& hash, vHave)
1322 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
1323 if (mi != mapBlockIndex.end())
1325 CBlockIndex* pindex = (*mi).second;
1326 if (pindex->IsInMainChain())
1336 CBlockIndex* GetBlockIndex()
1338 // Find the first block the caller has in the main chain
1339 foreach(const uint256& hash, vHave)
1341 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
1342 if (mi != mapBlockIndex.end())
1344 CBlockIndex* pindex = (*mi).second;
1345 if (pindex->IsInMainChain())
1349 return pindexGenesisBlock;
1352 uint256 GetBlockHash()
1354 // Find the first block the caller has in the main chain
1355 foreach(const uint256& hash, vHave)
1357 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
1358 if (mi != mapBlockIndex.end())
1360 CBlockIndex* pindex = (*mi).second;
1361 if (pindex->IsInMainChain())
1365 return hashGenesisBlock;
1370 CBlockIndex* pindex = GetBlockIndex();
1373 return pindex->nHeight;
1383 // Private key that includes an expiration date in case it never gets used.
1388 CPrivKey vchPrivKey;
1392 //// todo: add something to note what created it (user, getnewaddress, change)
1393 //// maybe should have a map<string, string> property map
1395 CWalletKey(int64 nTimeExpiresIn=0)
1397 nTimeCreated = (nTimeExpiresIn ? GetTime() : 0);
1398 nTimeExpires = nTimeExpiresIn;
1403 if (!(nType & SER_GETHASH))
1404 READWRITE(nVersion);
1405 READWRITE(vchPrivKey);
1406 READWRITE(nTimeCreated);
1407 READWRITE(nTimeExpires);
1408 READWRITE(strComment);
1417 extern map<uint256, CTransaction> mapTransactions;
1418 extern map<uint256, CWalletTx> mapWallet;
1419 extern vector<uint256> vWalletUpdated;
1420 extern CCriticalSection cs_mapWallet;
1421 extern map<vector<unsigned char>, CPrivKey> mapKeys;
1422 extern map<uint160, vector<unsigned char> > mapPubKeys;
1423 extern CCriticalSection cs_mapKeys;
1424 extern CKey keyUser;