diff options
| author | sirius-m <sirius-m@1a98c847-1fd6-4fd8-948a-caf3550aa51b> | 2009-08-30 03:46:39 +0000 |
|---|---|---|
| committer | sirius-m <sirius-m@1a98c847-1fd6-4fd8-948a-caf3550aa51b> | 2009-08-30 03:46:39 +0000 |
| commit | 4405b78d6059e536c36974088a8ed4d9f0f29898 (patch) | |
| tree | 1e8dec58f70505a3dd554918ce9b07384d047415 /main.h | |
First commit
Diffstat (limited to 'main.h')
| -rw-r--r-- | main.h | 1329 |
1 files changed, 1329 insertions, 0 deletions
diff --git a/main.h b/main.h new file mode 100644 index 0000000000..3432b316e7 --- /dev/null +++ b/main.h @@ -0,0 +1,1329 @@ +// Copyright (c) 2009 Satoshi Nakamoto
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+
+class COutPoint;
+class CInPoint;
+class CDiskTxPos;
+class CCoinBase;
+class CTxIn;
+class CTxOut;
+class CTransaction;
+class CBlock;
+class CBlockIndex;
+class CWalletTx;
+class CKeyItem;
+
+static const unsigned int MAX_SIZE = 0x02000000;
+static const int64 COIN = 100000000;
+static const int64 CENT = 1000000;
+static const int COINBASE_MATURITY = 100;
+
+static const CBigNum bnProofOfWorkLimit(~uint256(0) >> 32);
+
+
+
+
+
+
+extern CCriticalSection cs_main;
+extern map<uint256, CBlockIndex*> mapBlockIndex;
+extern const uint256 hashGenesisBlock;
+extern CBlockIndex* pindexGenesisBlock;
+extern int nBestHeight;
+extern uint256 hashBestChain;
+extern CBlockIndex* pindexBest;
+extern unsigned int nTransactionsUpdated;
+extern string strSetDataDir;
+extern int nDropMessagesTest;
+
+// Settings
+extern int fGenerateBitcoins;
+extern int64 nTransactionFee;
+extern CAddress addrIncoming;
+
+
+
+
+
+
+
+string GetAppDir();
+bool CheckDiskSpace(int64 nAdditionalBytes=0);
+FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode="rb");
+FILE* AppendBlockFile(unsigned int& nFileRet);
+bool AddKey(const CKey& key);
+vector<unsigned char> GenerateNewKey();
+bool AddToWallet(const CWalletTx& wtxIn);
+void ReacceptWalletTransactions();
+void RelayWalletTransactions();
+bool LoadBlockIndex(bool fAllowNew=true);
+void PrintBlockTree();
+bool BitcoinMiner();
+bool ProcessMessages(CNode* pfrom);
+bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv);
+bool SendMessages(CNode* pto);
+int64 GetBalance();
+bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& txNew, int64& nFeeRequiredRet);
+bool CommitTransactionSpent(const CWalletTx& wtxNew);
+bool SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew);
+
+
+
+
+
+
+
+
+
+
+
+class CDiskTxPos
+{
+public:
+ unsigned int nFile;
+ unsigned int nBlockPos;
+ unsigned int nTxPos;
+
+ CDiskTxPos()
+ {
+ SetNull();
+ }
+
+ CDiskTxPos(unsigned int nFileIn, unsigned int nBlockPosIn, unsigned int nTxPosIn)
+ {
+ nFile = nFileIn;
+ nBlockPos = nBlockPosIn;
+ nTxPos = nTxPosIn;
+ }
+
+ IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
+ void SetNull() { nFile = -1; nBlockPos = 0; nTxPos = 0; }
+ bool IsNull() const { return (nFile == -1); }
+
+ friend bool operator==(const CDiskTxPos& a, const CDiskTxPos& b)
+ {
+ return (a.nFile == b.nFile &&
+ a.nBlockPos == b.nBlockPos &&
+ a.nTxPos == b.nTxPos);
+ }
+
+ friend bool operator!=(const CDiskTxPos& a, const CDiskTxPos& b)
+ {
+ return !(a == b);
+ }
+
+ string ToString() const
+ {
+ if (IsNull())
+ return strprintf("null");
+ else
+ return strprintf("(nFile=%d, nBlockPos=%d, nTxPos=%d)", nFile, nBlockPos, nTxPos);
+ }
+
+ void print() const
+ {
+ printf("%s", ToString().c_str());
+ }
+};
+
+
+
+
+class CInPoint
+{
+public:
+ CTransaction* ptx;
+ unsigned int n;
+
+ CInPoint() { SetNull(); }
+ CInPoint(CTransaction* ptxIn, unsigned int nIn) { ptx = ptxIn; n = nIn; }
+ void SetNull() { ptx = NULL; n = -1; }
+ bool IsNull() const { return (ptx == NULL && n == -1); }
+};
+
+
+
+
+class COutPoint
+{
+public:
+ uint256 hash;
+ unsigned int n;
+
+ COutPoint() { SetNull(); }
+ COutPoint(uint256 hashIn, unsigned int nIn) { hash = hashIn; n = nIn; }
+ IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
+ void SetNull() { hash = 0; n = -1; }
+ bool IsNull() const { return (hash == 0 && n == -1); }
+
+ friend bool operator<(const COutPoint& a, const COutPoint& b)
+ {
+ return (a.hash < b.hash || (a.hash == b.hash && a.n < b.n));
+ }
+
+ friend bool operator==(const COutPoint& a, const COutPoint& b)
+ {
+ return (a.hash == b.hash && a.n == b.n);
+ }
+
+ friend bool operator!=(const COutPoint& a, const COutPoint& b)
+ {
+ return !(a == b);
+ }
+
+ string ToString() const
+ {
+ return strprintf("COutPoint(%s, %d)", hash.ToString().substr(0,6).c_str(), n);
+ }
+
+ void print() const
+ {
+ printf("%s\n", ToString().c_str());
+ }
+};
+
+
+
+
+//
+// An input of a transaction. It contains the location of the previous
+// transaction's output that it claims and a signature that matches the
+// output's public key.
+//
+class CTxIn
+{
+public:
+ COutPoint prevout;
+ CScript scriptSig;
+ unsigned int nSequence;
+
+ CTxIn()
+ {
+ nSequence = UINT_MAX;
+ }
+
+ explicit CTxIn(COutPoint prevoutIn, CScript scriptSigIn=CScript(), unsigned int nSequenceIn=UINT_MAX)
+ {
+ prevout = prevoutIn;
+ scriptSig = scriptSigIn;
+ nSequence = nSequenceIn;
+ }
+
+ CTxIn(uint256 hashPrevTx, unsigned int nOut, CScript scriptSigIn=CScript(), unsigned int nSequenceIn=UINT_MAX)
+ {
+ prevout = COutPoint(hashPrevTx, nOut);
+ scriptSig = scriptSigIn;
+ nSequence = nSequenceIn;
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(prevout);
+ READWRITE(scriptSig);
+ READWRITE(nSequence);
+ )
+
+ bool IsFinal() const
+ {
+ return (nSequence == UINT_MAX);
+ }
+
+ friend bool operator==(const CTxIn& a, const CTxIn& b)
+ {
+ return (a.prevout == b.prevout &&
+ a.scriptSig == b.scriptSig &&
+ a.nSequence == b.nSequence);
+ }
+
+ friend bool operator!=(const CTxIn& a, const CTxIn& b)
+ {
+ return !(a == b);
+ }
+
+ string ToString() const
+ {
+ string str;
+ str += strprintf("CTxIn(");
+ str += prevout.ToString();
+ if (prevout.IsNull())
+ str += strprintf(", coinbase %s", HexStr(scriptSig.begin(), scriptSig.end(), false).c_str());
+ else
+ str += strprintf(", scriptSig=%s", scriptSig.ToString().substr(0,24).c_str());
+ if (nSequence != UINT_MAX)
+ str += strprintf(", nSequence=%u", nSequence);
+ str += ")";
+ return str;
+ }
+
+ void print() const
+ {
+ printf("%s\n", ToString().c_str());
+ }
+
+ bool IsMine() const;
+ int64 GetDebit() const;
+};
+
+
+
+
+//
+// An output of a transaction. It contains the public key that the next input
+// must be able to sign with to claim it.
+//
+class CTxOut
+{
+public:
+ int64 nValue;
+ CScript scriptPubKey;
+
+public:
+ CTxOut()
+ {
+ SetNull();
+ }
+
+ CTxOut(int64 nValueIn, CScript scriptPubKeyIn)
+ {
+ nValue = nValueIn;
+ scriptPubKey = scriptPubKeyIn;
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(nValue);
+ READWRITE(scriptPubKey);
+ )
+
+ void SetNull()
+ {
+ nValue = -1;
+ scriptPubKey.clear();
+ }
+
+ bool IsNull()
+ {
+ return (nValue == -1);
+ }
+
+ uint256 GetHash() const
+ {
+ return SerializeHash(*this);
+ }
+
+ bool IsMine() const
+ {
+ return ::IsMine(scriptPubKey);
+ }
+
+ int64 GetCredit() const
+ {
+ if (IsMine())
+ return nValue;
+ return 0;
+ }
+
+ friend bool operator==(const CTxOut& a, const CTxOut& b)
+ {
+ return (a.nValue == b.nValue &&
+ a.scriptPubKey == b.scriptPubKey);
+ }
+
+ friend bool operator!=(const CTxOut& a, const CTxOut& b)
+ {
+ return !(a == b);
+ }
+
+ string ToString() const
+ {
+ if (scriptPubKey.size() < 6)
+ return "CTxOut(error)";
+ return strprintf("CTxOut(nValue=%I64d.%08I64d, scriptPubKey=%s)", nValue / COIN, nValue % COIN, scriptPubKey.ToString().substr(0,24).c_str());
+ }
+
+ void print() const
+ {
+ printf("%s\n", ToString().c_str());
+ }
+};
+
+
+
+
+//
+// The basic transaction that is broadcasted on the network and contained in
+// blocks. A transaction can contain multiple inputs and outputs.
+//
+class CTransaction
+{
+public:
+ int nVersion;
+ vector<CTxIn> vin;
+ vector<CTxOut> vout;
+ int nLockTime;
+
+
+ CTransaction()
+ {
+ SetNull();
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(this->nVersion);
+ nVersion = this->nVersion;
+ READWRITE(vin);
+ READWRITE(vout);
+ READWRITE(nLockTime);
+ )
+
+ void SetNull()
+ {
+ nVersion = 1;
+ vin.clear();
+ vout.clear();
+ nLockTime = 0;
+ }
+
+ bool IsNull() const
+ {
+ return (vin.empty() && vout.empty());
+ }
+
+ uint256 GetHash() const
+ {
+ return SerializeHash(*this);
+ }
+
+ bool IsFinal() const
+ {
+ if (nLockTime == 0 || nLockTime < nBestHeight)
+ return true;
+ foreach(const CTxIn& txin, vin)
+ if (!txin.IsFinal())
+ return false;
+ return true;
+ }
+
+ bool IsNewerThan(const CTransaction& old) const
+ {
+ if (vin.size() != old.vin.size())
+ return false;
+ for (int i = 0; i < vin.size(); i++)
+ if (vin[i].prevout != old.vin[i].prevout)
+ return false;
+
+ bool fNewer = false;
+ unsigned int nLowest = UINT_MAX;
+ for (int i = 0; i < vin.size(); i++)
+ {
+ if (vin[i].nSequence != old.vin[i].nSequence)
+ {
+ if (vin[i].nSequence <= nLowest)
+ {
+ fNewer = false;
+ nLowest = vin[i].nSequence;
+ }
+ if (old.vin[i].nSequence < nLowest)
+ {
+ fNewer = true;
+ nLowest = old.vin[i].nSequence;
+ }
+ }
+ }
+ return fNewer;
+ }
+
+ bool IsCoinBase() const
+ {
+ return (vin.size() == 1 && vin[0].prevout.IsNull());
+ }
+
+ bool CheckTransaction() const
+ {
+ // Basic checks that don't depend on any context
+ if (vin.empty() || vout.empty())
+ return error("CTransaction::CheckTransaction() : vin or vout empty");
+
+ // Check for negative values
+ foreach(const CTxOut& txout, vout)
+ if (txout.nValue < 0)
+ return error("CTransaction::CheckTransaction() : txout.nValue negative");
+
+ if (IsCoinBase())
+ {
+ if (vin[0].scriptSig.size() < 2 || vin[0].scriptSig.size() > 100)
+ return error("CTransaction::CheckTransaction() : coinbase script size");
+ }
+ else
+ {
+ foreach(const CTxIn& txin, vin)
+ if (txin.prevout.IsNull())
+ return error("CTransaction::CheckTransaction() : prevout is null");
+ }
+
+ return true;
+ }
+
+ bool IsMine() const
+ {
+ foreach(const CTxOut& txout, vout)
+ if (txout.IsMine())
+ return true;
+ return false;
+ }
+
+ int64 GetDebit() const
+ {
+ int64 nDebit = 0;
+ foreach(const CTxIn& txin, vin)
+ nDebit += txin.GetDebit();
+ return nDebit;
+ }
+
+ int64 GetCredit() const
+ {
+ int64 nCredit = 0;
+ foreach(const CTxOut& txout, vout)
+ nCredit += txout.GetCredit();
+ return nCredit;
+ }
+
+ int64 GetValueOut() const
+ {
+ int64 nValueOut = 0;
+ foreach(const CTxOut& txout, vout)
+ {
+ if (txout.nValue < 0)
+ throw runtime_error("CTransaction::GetValueOut() : negative value");
+ nValueOut += txout.nValue;
+ }
+ return nValueOut;
+ }
+
+ int64 GetMinFee(bool fDiscount=false) const
+ {
+ // Base fee is 1 cent per kilobyte
+ unsigned int nBytes = ::GetSerializeSize(*this, SER_NETWORK);
+ int64 nMinFee = (1 + (int64)nBytes / 1000) * CENT;
+
+ // First 100 transactions in a block are free
+ if (fDiscount && nBytes < 10000)
+ nMinFee = 0;
+
+ // To limit dust spam, require a 0.01 fee if any output is less than 0.01
+ if (nMinFee < CENT)
+ foreach(const CTxOut& txout, vout)
+ if (txout.nValue < CENT)
+ nMinFee = CENT;
+
+ return nMinFee;
+ }
+
+
+
+ bool ReadFromDisk(CDiskTxPos pos, FILE** pfileRet=NULL)
+ {
+ CAutoFile filein = OpenBlockFile(pos.nFile, 0, pfileRet ? "rb+" : "rb");
+ if (!filein)
+ return error("CTransaction::ReadFromDisk() : OpenBlockFile failed");
+
+ // Read transaction
+ if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
+ return error("CTransaction::ReadFromDisk() : fseek failed");
+ filein >> *this;
+
+ // Return file pointer
+ if (pfileRet)
+ {
+ if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
+ return error("CTransaction::ReadFromDisk() : second fseek failed");
+ *pfileRet = filein.release();
+ }
+ return true;
+ }
+
+
+ friend bool operator==(const CTransaction& a, const CTransaction& b)
+ {
+ return (a.nVersion == b.nVersion &&
+ a.vin == b.vin &&
+ a.vout == b.vout &&
+ a.nLockTime == b.nLockTime);
+ }
+
+ friend bool operator!=(const CTransaction& a, const CTransaction& b)
+ {
+ return !(a == b);
+ }
+
+
+ string ToString() const
+ {
+ string str;
+ str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%d, vout.size=%d, nLockTime=%d)\n",
+ GetHash().ToString().substr(0,6).c_str(),
+ nVersion,
+ vin.size(),
+ vout.size(),
+ nLockTime);
+ for (int i = 0; i < vin.size(); i++)
+ str += " " + vin[i].ToString() + "\n";
+ for (int i = 0; i < vout.size(); i++)
+ str += " " + vout[i].ToString() + "\n";
+ return str;
+ }
+
+ void print() const
+ {
+ printf("%s", ToString().c_str());
+ }
+
+
+
+ bool DisconnectInputs(CTxDB& txdb);
+ bool ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPool, CDiskTxPos posThisTx, int nHeight, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee=0);
+ bool ClientConnectInputs();
+
+ bool AcceptTransaction(CTxDB& txdb, bool fCheckInputs=true, bool* pfMissingInputs=NULL);
+
+ bool AcceptTransaction(bool fCheckInputs=true, bool* pfMissingInputs=NULL)
+ {
+ CTxDB txdb("r");
+ return AcceptTransaction(txdb, fCheckInputs, pfMissingInputs);
+ }
+
+protected:
+ bool AddToMemoryPool();
+public:
+ bool RemoveFromMemoryPool();
+};
+
+
+
+
+
+//
+// A transaction with a merkle branch linking it to the block chain
+//
+class CMerkleTx : public CTransaction
+{
+public:
+ uint256 hashBlock;
+ vector<uint256> vMerkleBranch;
+ int nIndex;
+
+ // memory only
+ mutable bool fMerkleVerified;
+
+
+ CMerkleTx()
+ {
+ Init();
+ }
+
+ CMerkleTx(const CTransaction& txIn) : CTransaction(txIn)
+ {
+ Init();
+ }
+
+ void Init()
+ {
+ hashBlock = 0;
+ nIndex = -1;
+ fMerkleVerified = false;
+ }
+
+ int64 GetCredit() const
+ {
+ // Must wait until coinbase is safely deep enough in the chain before valuing it
+ if (IsCoinBase() && GetBlocksToMaturity() > 0)
+ return 0;
+ return CTransaction::GetCredit();
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ nSerSize += SerReadWrite(s, *(CTransaction*)this, nType, nVersion, ser_action);
+ nVersion = this->nVersion;
+ READWRITE(hashBlock);
+ READWRITE(vMerkleBranch);
+ READWRITE(nIndex);
+ )
+
+
+ int SetMerkleBranch(const CBlock* pblock=NULL);
+ int GetDepthInMainChain() const;
+ bool IsInMainChain() const { return GetDepthInMainChain() > 0; }
+ int GetBlocksToMaturity() const;
+ bool AcceptTransaction(CTxDB& txdb, bool fCheckInputs=true);
+ bool AcceptTransaction() { CTxDB txdb("r"); return AcceptTransaction(txdb); }
+};
+
+
+
+
+//
+// A transaction with a bunch of additional info that only the owner cares
+// about. It includes any unrecorded transactions needed to link it back
+// to the block chain.
+//
+class CWalletTx : public CMerkleTx
+{
+public:
+ vector<CMerkleTx> vtxPrev;
+ map<string, string> mapValue;
+ vector<pair<string, string> > vOrderForm;
+ unsigned int fTimeReceivedIsTxTime;
+ unsigned int nTimeReceived; // time received by this node
+ char fFromMe;
+ char fSpent;
+ //// probably need to sign the order info so know it came from payer
+
+ // memory only
+ mutable unsigned int nTimeDisplayed;
+
+
+ CWalletTx()
+ {
+ Init();
+ }
+
+ CWalletTx(const CMerkleTx& txIn) : CMerkleTx(txIn)
+ {
+ Init();
+ }
+
+ CWalletTx(const CTransaction& txIn) : CMerkleTx(txIn)
+ {
+ Init();
+ }
+
+ void Init()
+ {
+ fTimeReceivedIsTxTime = false;
+ nTimeReceived = 0;
+ fFromMe = false;
+ fSpent = false;
+ nTimeDisplayed = 0;
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion, ser_action);
+ nVersion = this->nVersion;
+ READWRITE(vtxPrev);
+ READWRITE(mapValue);
+ READWRITE(vOrderForm);
+ READWRITE(fTimeReceivedIsTxTime);
+ READWRITE(nTimeReceived);
+ READWRITE(fFromMe);
+ READWRITE(fSpent);
+ )
+
+ bool WriteToDisk()
+ {
+ return CWalletDB().WriteTx(GetHash(), *this);
+ }
+
+
+ int64 GetTxTime() const;
+
+ void AddSupportingTransactions(CTxDB& txdb);
+
+ bool AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs=true);
+ bool AcceptWalletTransaction() { CTxDB txdb("r"); return AcceptWalletTransaction(txdb); }
+
+ void RelayWalletTransaction(CTxDB& txdb);
+ void RelayWalletTransaction() { CTxDB txdb("r"); RelayWalletTransaction(txdb); }
+};
+
+
+
+
+//
+// A txdb record that contains the disk location of a transaction and the
+// locations of transactions that spend its outputs. vSpent is really only
+// used as a flag, but having the location is very helpful for debugging.
+//
+class CTxIndex
+{
+public:
+ CDiskTxPos pos;
+ vector<CDiskTxPos> vSpent;
+
+ CTxIndex()
+ {
+ SetNull();
+ }
+
+ CTxIndex(const CDiskTxPos& posIn, unsigned int nOutputs)
+ {
+ pos = posIn;
+ vSpent.resize(nOutputs);
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ if (!(nType & SER_GETHASH))
+ READWRITE(nVersion);
+ READWRITE(pos);
+ READWRITE(vSpent);
+ )
+
+ void SetNull()
+ {
+ pos.SetNull();
+ vSpent.clear();
+ }
+
+ bool IsNull()
+ {
+ return pos.IsNull();
+ }
+
+ friend bool operator==(const CTxIndex& a, const CTxIndex& b)
+ {
+ if (a.pos != b.pos || a.vSpent.size() != b.vSpent.size())
+ return false;
+ for (int i = 0; i < a.vSpent.size(); i++)
+ if (a.vSpent[i] != b.vSpent[i])
+ return false;
+ return true;
+ }
+
+ friend bool operator!=(const CTxIndex& a, const CTxIndex& b)
+ {
+ return !(a == b);
+ }
+};
+
+
+
+
+
+//
+// Nodes collect new transactions into a block, hash them into a hash tree,
+// and scan through nonce values to make the block's hash satisfy proof-of-work
+// requirements. When they solve the proof-of-work, they broadcast the block
+// to everyone and the block is added to the block chain. The first transaction
+// in the block is a special one that creates a new coin owned by the creator
+// of the block.
+//
+// Blocks are appended to blk0001.dat files on disk. Their location on disk
+// is indexed by CBlockIndex objects in memory.
+//
+class CBlock
+{
+public:
+ // header
+ int nVersion;
+ uint256 hashPrevBlock;
+ uint256 hashMerkleRoot;
+ unsigned int nTime;
+ unsigned int nBits;
+ unsigned int nNonce;
+
+ // network and disk
+ vector<CTransaction> vtx;
+
+ // memory only
+ mutable vector<uint256> vMerkleTree;
+
+
+ CBlock()
+ {
+ SetNull();
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(this->nVersion);
+ nVersion = this->nVersion;
+ READWRITE(hashPrevBlock);
+ READWRITE(hashMerkleRoot);
+ READWRITE(nTime);
+ READWRITE(nBits);
+ READWRITE(nNonce);
+
+ // ConnectBlock depends on vtx being last so it can calculate offset
+ if (!(nType & (SER_GETHASH|SER_BLOCKHEADERONLY)))
+ READWRITE(vtx);
+ else if (fRead)
+ const_cast<CBlock*>(this)->vtx.clear();
+ )
+
+ void SetNull()
+ {
+ nVersion = 1;
+ hashPrevBlock = 0;
+ hashMerkleRoot = 0;
+ nTime = 0;
+ nBits = 0;
+ nNonce = 0;
+ vtx.clear();
+ vMerkleTree.clear();
+ }
+
+ bool IsNull() const
+ {
+ return (nBits == 0);
+ }
+
+ uint256 GetHash() const
+ {
+ return Hash(BEGIN(nVersion), END(nNonce));
+ }
+
+
+ uint256 BuildMerkleTree() const
+ {
+ vMerkleTree.clear();
+ foreach(const CTransaction& tx, vtx)
+ vMerkleTree.push_back(tx.GetHash());
+ int j = 0;
+ for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2)
+ {
+ for (int i = 0; i < nSize; i += 2)
+ {
+ int i2 = min(i+1, nSize-1);
+ vMerkleTree.push_back(Hash(BEGIN(vMerkleTree[j+i]), END(vMerkleTree[j+i]),
+ BEGIN(vMerkleTree[j+i2]), END(vMerkleTree[j+i2])));
+ }
+ j += nSize;
+ }
+ return (vMerkleTree.empty() ? 0 : vMerkleTree.back());
+ }
+
+ vector<uint256> GetMerkleBranch(int nIndex) const
+ {
+ if (vMerkleTree.empty())
+ BuildMerkleTree();
+ vector<uint256> vMerkleBranch;
+ int j = 0;
+ for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2)
+ {
+ int i = min(nIndex^1, nSize-1);
+ vMerkleBranch.push_back(vMerkleTree[j+i]);
+ nIndex >>= 1;
+ j += nSize;
+ }
+ return vMerkleBranch;
+ }
+
+ static uint256 CheckMerkleBranch(uint256 hash, const vector<uint256>& vMerkleBranch, int nIndex)
+ {
+ if (nIndex == -1)
+ return 0;
+ foreach(const uint256& otherside, vMerkleBranch)
+ {
+ if (nIndex & 1)
+ hash = Hash(BEGIN(otherside), END(otherside), BEGIN(hash), END(hash));
+ else
+ hash = Hash(BEGIN(hash), END(hash), BEGIN(otherside), END(otherside));
+ nIndex >>= 1;
+ }
+ return hash;
+ }
+
+
+ bool WriteToDisk(bool fWriteTransactions, unsigned int& nFileRet, unsigned int& nBlockPosRet)
+ {
+ // Open history file to append
+ CAutoFile fileout = AppendBlockFile(nFileRet);
+ if (!fileout)
+ return error("CBlock::WriteToDisk() : AppendBlockFile failed");
+ if (!fWriteTransactions)
+ fileout.nType |= SER_BLOCKHEADERONLY;
+
+ // Write index header
+ unsigned int nSize = fileout.GetSerializeSize(*this);
+ fileout << FLATDATA(pchMessageStart) << nSize;
+
+ // Write block
+ nBlockPosRet = ftell(fileout);
+ if (nBlockPosRet == -1)
+ return error("CBlock::WriteToDisk() : ftell failed");
+ fileout << *this;
+
+ return true;
+ }
+
+ bool ReadFromDisk(unsigned int nFile, unsigned int nBlockPos, bool fReadTransactions)
+ {
+ SetNull();
+
+ // Open history file to read
+ CAutoFile filein = OpenBlockFile(nFile, nBlockPos, "rb");
+ if (!filein)
+ return error("CBlock::ReadFromDisk() : OpenBlockFile failed");
+ if (!fReadTransactions)
+ filein.nType |= SER_BLOCKHEADERONLY;
+
+ // Read block
+ filein >> *this;
+
+ // Check the header
+ if (CBigNum().SetCompact(nBits) > bnProofOfWorkLimit)
+ return error("CBlock::ReadFromDisk() : nBits errors in block header");
+ if (GetHash() > CBigNum().SetCompact(nBits).getuint256())
+ return error("CBlock::ReadFromDisk() : GetHash() errors in block header");
+
+ return true;
+ }
+
+
+
+ void print() const
+ {
+ printf("CBlock(hash=%s, ver=%d, hashPrevBlock=%s, hashMerkleRoot=%s, nTime=%u, nBits=%08x, nNonce=%u, vtx=%d)\n",
+ GetHash().ToString().substr(0,14).c_str(),
+ nVersion,
+ hashPrevBlock.ToString().substr(0,14).c_str(),
+ hashMerkleRoot.ToString().substr(0,6).c_str(),
+ nTime, nBits, nNonce,
+ vtx.size());
+ for (int i = 0; i < vtx.size(); i++)
+ {
+ printf(" ");
+ vtx[i].print();
+ }
+ printf(" vMerkleTree: ");
+ for (int i = 0; i < vMerkleTree.size(); i++)
+ printf("%s ", vMerkleTree[i].ToString().substr(0,6).c_str());
+ printf("\n");
+ }
+
+
+ int64 GetBlockValue(int64 nFees) const;
+ bool DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex);
+ bool ConnectBlock(CTxDB& txdb, CBlockIndex* pindex);
+ bool ReadFromDisk(const CBlockIndex* blockindex, bool fReadTransactions);
+ bool AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos);
+ bool CheckBlock() const;
+ bool AcceptBlock();
+};
+
+
+
+
+
+
+//
+// The block chain is a tree shaped structure starting with the
+// genesis block at the root, with each block potentially having multiple
+// candidates to be the next block. pprev and pnext link a path through the
+// main/longest chain. A blockindex may have multiple pprev pointing back
+// to it, but pnext will only point forward to the longest branch, or will
+// be null if the block is not part of the longest chain.
+//
+class CBlockIndex
+{
+public:
+ const uint256* phashBlock;
+ CBlockIndex* pprev;
+ CBlockIndex* pnext;
+ unsigned int nFile;
+ unsigned int nBlockPos;
+ int nHeight;
+
+ // block header
+ int nVersion;
+ uint256 hashMerkleRoot;
+ unsigned int nTime;
+ unsigned int nBits;
+ unsigned int nNonce;
+
+
+ CBlockIndex()
+ {
+ phashBlock = NULL;
+ pprev = NULL;
+ pnext = NULL;
+ nFile = 0;
+ nBlockPos = 0;
+ nHeight = 0;
+
+ nVersion = 0;
+ hashMerkleRoot = 0;
+ nTime = 0;
+ nBits = 0;
+ nNonce = 0;
+ }
+
+ CBlockIndex(unsigned int nFileIn, unsigned int nBlockPosIn, CBlock& block)
+ {
+ phashBlock = NULL;
+ pprev = NULL;
+ pnext = NULL;
+ nFile = nFileIn;
+ nBlockPos = nBlockPosIn;
+ nHeight = 0;
+
+ nVersion = block.nVersion;
+ hashMerkleRoot = block.hashMerkleRoot;
+ nTime = block.nTime;
+ nBits = block.nBits;
+ nNonce = block.nNonce;
+ }
+
+ uint256 GetBlockHash() const
+ {
+ return *phashBlock;
+ }
+
+ bool IsInMainChain() const
+ {
+ return (pnext || this == pindexBest);
+ }
+
+ bool EraseBlockFromDisk()
+ {
+ // Open history file
+ CAutoFile fileout = OpenBlockFile(nFile, nBlockPos, "rb+");
+ if (!fileout)
+ return false;
+
+ // Overwrite with empty null block
+ CBlock block;
+ block.SetNull();
+ fileout << block;
+
+ return true;
+ }
+
+ enum { nMedianTimeSpan=11 };
+
+ int64 GetMedianTimePast() const
+ {
+ unsigned int pmedian[nMedianTimeSpan];
+ unsigned int* pbegin = &pmedian[nMedianTimeSpan];
+ unsigned int* pend = &pmedian[nMedianTimeSpan];
+
+ const CBlockIndex* pindex = this;
+ for (int i = 0; i < nMedianTimeSpan && pindex; i++, pindex = pindex->pprev)
+ *(--pbegin) = pindex->nTime;
+
+ sort(pbegin, pend);
+ return pbegin[(pend - pbegin)/2];
+ }
+
+ int64 GetMedianTime() const
+ {
+ const CBlockIndex* pindex = this;
+ for (int i = 0; i < nMedianTimeSpan/2; i++)
+ {
+ if (!pindex->pnext)
+ return nTime;
+ pindex = pindex->pnext;
+ }
+ return pindex->GetMedianTimePast();
+ }
+
+
+
+ string ToString() const
+ {
+ return strprintf("CBlockIndex(nprev=%08x, pnext=%08x, nFile=%d, nBlockPos=%-6d nHeight=%d, merkle=%s, hashBlock=%s)",
+ pprev, pnext, nFile, nBlockPos, nHeight,
+ hashMerkleRoot.ToString().substr(0,6).c_str(),
+ GetBlockHash().ToString().substr(0,14).c_str());
+ }
+
+ void print() const
+ {
+ printf("%s\n", ToString().c_str());
+ }
+};
+
+
+
+//
+// Used to marshal pointers into hashes for db storage.
+//
+class CDiskBlockIndex : public CBlockIndex
+{
+public:
+ uint256 hashPrev;
+ uint256 hashNext;
+
+ CDiskBlockIndex()
+ {
+ hashPrev = 0;
+ hashNext = 0;
+ }
+
+ explicit CDiskBlockIndex(CBlockIndex* pindex) : CBlockIndex(*pindex)
+ {
+ hashPrev = (pprev ? pprev->GetBlockHash() : 0);
+ hashNext = (pnext ? pnext->GetBlockHash() : 0);
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ if (!(nType & SER_GETHASH))
+ READWRITE(nVersion);
+
+ READWRITE(hashNext);
+ READWRITE(nFile);
+ READWRITE(nBlockPos);
+ READWRITE(nHeight);
+
+ // block header
+ READWRITE(this->nVersion);
+ READWRITE(hashPrev);
+ READWRITE(hashMerkleRoot);
+ READWRITE(nTime);
+ READWRITE(nBits);
+ READWRITE(nNonce);
+ )
+
+ uint256 GetBlockHash() const
+ {
+ CBlock block;
+ block.nVersion = nVersion;
+ block.hashPrevBlock = hashPrev;
+ block.hashMerkleRoot = hashMerkleRoot;
+ block.nTime = nTime;
+ block.nBits = nBits;
+ block.nNonce = nNonce;
+ return block.GetHash();
+ }
+
+
+ string ToString() const
+ {
+ string str = "CDiskBlockIndex(";
+ str += CBlockIndex::ToString();
+ str += strprintf("\n hashBlock=%s, hashPrev=%s, hashNext=%s)",
+ GetBlockHash().ToString().c_str(),
+ hashPrev.ToString().substr(0,14).c_str(),
+ hashNext.ToString().substr(0,14).c_str());
+ return str;
+ }
+
+ void print() const
+ {
+ printf("%s\n", ToString().c_str());
+ }
+};
+
+
+
+
+
+
+
+
+//
+// Describes a place in the block chain to another node such that if the
+// other node doesn't have the same branch, it can find a recent common trunk.
+// The further back it is, the further before the fork it may be.
+//
+class CBlockLocator
+{
+protected:
+ vector<uint256> vHave;
+public:
+
+ CBlockLocator()
+ {
+ }
+
+ explicit CBlockLocator(const CBlockIndex* pindex)
+ {
+ Set(pindex);
+ }
+
+ explicit CBlockLocator(uint256 hashBlock)
+ {
+ map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
+ if (mi != mapBlockIndex.end())
+ Set((*mi).second);
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ if (!(nType & SER_GETHASH))
+ READWRITE(nVersion);
+ READWRITE(vHave);
+ )
+
+ void Set(const CBlockIndex* pindex)
+ {
+ vHave.clear();
+ int nStep = 1;
+ while (pindex)
+ {
+ vHave.push_back(pindex->GetBlockHash());
+
+ // Exponentially larger steps back
+ for (int i = 0; pindex && i < nStep; i++)
+ pindex = pindex->pprev;
+ if (vHave.size() > 10)
+ nStep *= 2;
+ }
+ vHave.push_back(hashGenesisBlock);
+ }
+
+ CBlockIndex* GetBlockIndex()
+ {
+ // Find the first block the caller has in the main chain
+ foreach(const uint256& hash, vHave)
+ {
+ map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
+ if (mi != mapBlockIndex.end())
+ {
+ CBlockIndex* pindex = (*mi).second;
+ if (pindex->IsInMainChain())
+ return pindex;
+ }
+ }
+ return pindexGenesisBlock;
+ }
+
+ uint256 GetBlockHash()
+ {
+ // Find the first block the caller has in the main chain
+ foreach(const uint256& hash, vHave)
+ {
+ map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
+ if (mi != mapBlockIndex.end())
+ {
+ CBlockIndex* pindex = (*mi).second;
+ if (pindex->IsInMainChain())
+ return hash;
+ }
+ }
+ return hashGenesisBlock;
+ }
+
+ int GetHeight()
+ {
+ CBlockIndex* pindex = GetBlockIndex();
+ if (!pindex)
+ return 0;
+ return pindex->nHeight;
+ }
+};
+
+
+
+
+
+
+
+
+
+
+
+
+extern map<uint256, CTransaction> mapTransactions;
+extern map<uint256, CWalletTx> mapWallet;
+extern vector<pair<uint256, bool> > vWalletUpdated;
+extern CCriticalSection cs_mapWallet;
+extern map<vector<unsigned char>, CPrivKey> mapKeys;
+extern map<uint160, vector<unsigned char> > mapPubKeys;
+extern CCriticalSection cs_mapKeys;
+extern CKey keyUser;
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