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main.h
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main.h
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Distributed under the MIT/X11 software license, see the accompanying
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
class COutPoint;
class CInPoint;
class CDiskTxPos;
class CCoinBase;
class CTxIn;
class CTxOut;
class CTransaction;
class CBlock;
class CBlockIndex;
class CWalletTx;
class CKeyItem;
class CHooks;
static const unsigned int MAX_BLOCK_SIZE = 1000000;
static const unsigned int MAX_BLOCK_SIZE_GEN = MAX_BLOCK_SIZE/2;
static const int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
static const int64 COIN = 100000000;
static const int64 CENT = 1000000;
static const int64 MAX_MONEY = 21000000 * COIN;
inline bool MoneyRange(int64 nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
static const int COINBASE_MATURITY = 100;
#ifdef USE_UPNP
static const int fHaveUPnP = true;
#else
static const int fHaveUPnP = false;
#endif
extern CCriticalSection cs_main;
extern map<uint256, CBlockIndex*> mapBlockIndex;
extern uint256 hashGenesisBlock;
extern CBigNum bnProofOfWorkLimit;
extern CBlockIndex* pindexGenesisBlock;
extern int nBestHeight;
extern CBigNum bnBestChainWork;
extern CBigNum bnBestInvalidWork;
extern uint256 hashBestChain;
extern CBlockIndex* pindexBest;
extern unsigned int nTransactionsUpdated;
extern map<uint256, int> mapRequestCount;
extern CCriticalSection cs_mapRequestCount;
extern map<string, string> mapAddressBook;
extern CCriticalSection cs_mapAddressBook;
extern vector<unsigned char> vchDefaultKey;
extern double dHashesPerSec;
extern int64 nHPSTimerStart;
// Settings
extern int fGenerateBitcoins;
extern int64 nTransactionFee;
extern int fLimitProcessors;
extern int nLimitProcessors;
extern int fMinimizeToTray;
extern int fMinimizeOnClose;
extern int fUseUPnP;
extern CHooks* hooks;
bool CheckDiskSpace(uint64 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 WalletUpdateSpent(const COutPoint& prevout);
int ScanForWalletTransactions(CBlockIndex* pindexStart);
void ReacceptWalletTransactions();
bool LoadBlockIndex(bool fAllowNew=true);
void PrintBlockTree();
bool ProcessMessages(CNode* pfrom);
bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv);
bool SendMessages(CNode* pto, bool fSendTrickle);
int64 GetBalance();
bool CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet);
bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet);
bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey);
bool BroadcastTransaction(CWalletTx& wtxNew);
string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
string SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
void GenerateBitcoins(bool fGenerate);
void ThreadBitcoinMiner(void* parg);
CBlock* CreateNewBlock(CReserveKey& reservekey);
void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime);
void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1);
bool CheckWork(CBlock* pblock, CReserveKey& reservekey);
void BitcoinMiner();
bool CheckProofOfWork(uint256 hash, unsigned int nBits);
bool IsInitialBlockDownload();
string GetWarnings(string strFor);
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(0,10).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).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;
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 (!MoneyRange(nValue))
throw runtime_error("CTxOut::GetCredit() : value out of range");
return (IsMine() ? nValue : 0);
}
bool IsChange() const
{
// On a debit transaction, a txout that's mine but isn't in the address book is change
vector<unsigned char> vchPubKey;
if (ExtractPubKey(scriptPubKey, true, vchPubKey))
CRITICAL_BLOCK(cs_mapAddressBook)
if (!mapAddressBook.count(PubKeyToAddress(vchPubKey)))
return true;
return false;
}
int64 GetChange() const
{
if (!MoneyRange(nValue))
throw runtime_error("CTxOut::GetChange() : value out of range");
return (IsChange() ? nValue : 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=%"PRI64d".%08"PRI64d", scriptPubKey=%s)", nValue / COIN, nValue % COIN, scriptPubKey.ToString().substr(0,30).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;
unsigned 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(int nBlockHeight=0, int64 nBlockTime=0) const
{
// Time based nLockTime implemented in 0.1.6
if (nLockTime == 0)
return true;
if (nBlockHeight == 0)
nBlockHeight = nBestHeight;
if (nBlockTime == 0)
nBlockTime = GetAdjustedTime();
if ((int64)nLockTime < (nLockTime < 500000000 ? (int64)nBlockHeight : nBlockTime))
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());
}
int GetSigOpCount() const
{
int n = 0;
foreach(const CTxIn& txin, vin)
n += txin.scriptSig.GetSigOpCount();
foreach(const CTxOut& txout, vout)
n += txout.scriptPubKey.GetSigOpCount();
return n;
}
bool IsStandard() const
{
foreach(const CTxIn& txin, vin)
if (!txin.scriptSig.IsPushOnly())
return error("nonstandard txin: %s", txin.scriptSig.ToString().c_str());
foreach(const CTxOut& txout, vout)
if (!::IsStandard(txout.scriptPubKey))
return error("nonstandard txout: %s", txout.scriptPubKey.ToString().c_str());
return true;
}
bool IsMine() const;
bool IsFromMe() const
{
return (GetDebit() > 0);
}
int64 GetDebit() const
{
int64 nDebit = 0;
foreach(const CTxIn& txin, vin)
{
nDebit += txin.GetDebit();
if (!MoneyRange(nDebit))
throw runtime_error("CTransaction::GetDebit() : value out of range");
}
return nDebit;
}
int64 GetCredit() const
{
int64 nCredit = 0;
foreach(const CTxOut& txout, vout)
{
nCredit += txout.GetCredit();
if (!MoneyRange(nCredit))
throw runtime_error("CTransaction::GetCredit() : value out of range");
}
return nCredit;
}
int64 GetChange() const
{
if (IsCoinBase())
return 0;
int64 nChange = 0;
foreach(const CTxOut& txout, vout)
{
nChange += txout.GetChange();
if (!MoneyRange(nChange))
throw runtime_error("CTransaction::GetChange() : value out of range");
}
return nChange;
}
int64 GetValueOut() const
{
int64 nValueOut = 0;
foreach(const CTxOut& txout, vout)
{
nValueOut += txout.nValue;
if (!MoneyRange(txout.nValue) || !MoneyRange(nValueOut))
throw runtime_error("CTransaction::GetValueOut() : value out of range");
}
return nValueOut;
}
static bool AllowFree(double dPriority)
{
// Large (in bytes) low-priority (new, small-coin) transactions
// need a fee.
return dPriority > COIN * 144 / 250;
}
int64 GetMinFee(unsigned int nBlockSize=1, bool fAllowFree=true) const
{
// Base fee is 1 cent per kilobyte
unsigned int nBytes = ::GetSerializeSize(*this, SER_NETWORK);
unsigned int nNewBlockSize = nBlockSize + nBytes;
int64 nMinFee = (1 + (int64)nBytes / 1000) * CENT;
if (fAllowFree)
{
if (nBlockSize == 1)
{
// Transactions under 10K are free
// (about 4500bc if made of 50bc inputs)
if (nBytes < 10000)
nMinFee = 0;
}
else
{
// Free transaction area
if (nNewBlockSize < 27000)
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;
// Raise the price as the block approaches full
if (nBlockSize != 1 && nNewBlockSize >= MAX_BLOCK_SIZE_GEN/2)
{
if (nNewBlockSize >= MAX_BLOCK_SIZE_GEN)
return MAX_MONEY;
nMinFee *= MAX_BLOCK_SIZE_GEN / (MAX_BLOCK_SIZE_GEN - nNewBlockSize);
}
if (!MoneyRange(nMinFee))
nMinFee = MAX_MONEY;
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(0,10).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 ReadFromDisk(CTxDB& txdb, COutPoint prevout, CTxIndex& txindexRet);
bool ReadFromDisk(CTxDB& txdb, COutPoint prevout);
bool ReadFromDisk(COutPoint prevout);
bool DisconnectInputs(CTxDB& txdb, CBlockIndex* pindex);
bool ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPool, CDiskTxPos posThisTx,
CBlockIndex* pindexBlock, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee=0);
bool ClientConnectInputs();
bool CheckTransaction() const;
bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true, bool* pfMissingInputs=NULL);
bool AcceptToMemoryPool(bool fCheckInputs=true, bool* pfMissingInputs=NULL)
{
CTxDB txdb("r");
return AcceptToMemoryPool(txdb, fCheckInputs, pfMissingInputs);
}
protected:
bool AddToMemoryPoolUnchecked();
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 char fMerkleVerified;
CMerkleTx()
{
Init();
}
CMerkleTx(const CTransaction& txIn) : CTransaction(txIn)
{
Init();
}
void Init()
{
hashBlock = 0;
nIndex = -1;
fMerkleVerified = false;
}
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(int& nHeightRet) const;
int GetDepthInMainChain() const { int nHeight; return GetDepthInMainChain(nHeight); }
bool IsInMainChain() const { return GetDepthInMainChain() > 0; }
int GetBlocksToMaturity() const;
bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true);
bool AcceptToMemoryPool() { CTxDB txdb("r"); return AcceptToMemoryPool(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;
string strFromAccount;
vector<char> vfSpent;
// memory only
mutable char fDebitCached;
mutable char fCreditCached;
mutable char fAvailableCreditCached;
mutable char fChangeCached;
mutable int64 nDebitCached;
mutable int64 nCreditCached;
mutable int64 nAvailableCreditCached;
mutable int64 nChangeCached;
// memory only UI hints
mutable unsigned int nTimeDisplayed;
mutable int nLinesDisplayed;
mutable char fConfirmedDisplayed;
CWalletTx()
{
Init();
}
CWalletTx(const CMerkleTx& txIn) : CMerkleTx(txIn)
{
Init();
}
CWalletTx(const CTransaction& txIn) : CMerkleTx(txIn)
{
Init();
}
void Init()
{
vtxPrev.clear();
mapValue.clear();
vOrderForm.clear();
fTimeReceivedIsTxTime = false;
nTimeReceived = 0;
fFromMe = false;
strFromAccount.clear();
vfSpent.clear();
fDebitCached = false;
fCreditCached = false;
fAvailableCreditCached = false;
fChangeCached = false;
nDebitCached = 0;
nCreditCached = 0;
nAvailableCreditCached = 0;
nChangeCached = 0;
nTimeDisplayed = 0;
nLinesDisplayed = 0;
fConfirmedDisplayed = false;
}
IMPLEMENT_SERIALIZE
(
CWalletTx* pthis = const_cast<CWalletTx*>(this);
if (fRead)
pthis->Init();
char fSpent = false;
if (!fRead)
{
pthis->mapValue["fromaccount"] = pthis->strFromAccount;
string str;
foreach(char f, vfSpent)
{
str += (f ? '1' : '0');
if (f)
fSpent = true;
}
pthis->mapValue["spent"] = str;
}
nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion,ser_action);
READWRITE(vtxPrev);
READWRITE(mapValue);
READWRITE(vOrderForm);
READWRITE(fTimeReceivedIsTxTime);
READWRITE(nTimeReceived);
READWRITE(fFromMe);
READWRITE(fSpent);
if (fRead)
{
pthis->strFromAccount = pthis->mapValue["fromaccount"];
if (mapValue.count("spent"))
foreach(char c, pthis->mapValue["spent"])
pthis->vfSpent.push_back(c != '0');
else
pthis->vfSpent.assign(vout.size(), fSpent);
}
pthis->mapValue.erase("fromaccount");
pthis->mapValue.erase("version");
pthis->mapValue.erase("spent");
)
// marks certain txout's as spent
// returns true if any update took place
bool UpdateSpent(const vector<char>& vfNewSpent)
{
bool fReturn = false;
for (int i=0; i < vfNewSpent.size(); i++)
{
if (i == vfSpent.size())
break;
if (vfNewSpent[i] && !vfSpent[i])
{
vfSpent[i] = true;
fReturn = true;
fAvailableCreditCached = false;
}
}
return fReturn;
}
void MarkDirty()
{
fCreditCached = false;
fAvailableCreditCached = false;
fDebitCached = false;
fChangeCached = false;
}
void MarkSpent(unsigned int nOut)
{
if (nOut >= vout.size())
throw runtime_error("CWalletTx::MarkSpent() : nOut out of range");
vfSpent.resize(vout.size());
if (!vfSpent[nOut])
{
vfSpent[nOut] = true;
fAvailableCreditCached = false;
}
}
bool IsSpent(unsigned int nOut) const
{
if (nOut >= vout.size())
throw runtime_error("CWalletTx::IsSpent() : nOut out of range");
if (nOut >= vfSpent.size())
return false;
return (!!vfSpent[nOut]);
}
int64 GetDebit() const
{
if (vin.empty())
return 0;
if (fDebitCached)
return nDebitCached;
nDebitCached = CTransaction::GetDebit();
fDebitCached = true;
return nDebitCached;
}
int64 GetCredit(bool fUseCache=true) const
{
// Must wait until coinbase is safely deep enough in the chain before valuing it
if (IsCoinBase() && GetBlocksToMaturity() > 0)
return 0;
// GetBalance can assume transactions in mapWallet won't change
if (fUseCache && fCreditCached)
return nCreditCached;
nCreditCached = CTransaction::GetCredit();
fCreditCached = true;
return nCreditCached;
}
int64 GetAvailableCredit(bool fUseCache=true) const
{
// Must wait until coinbase is safely deep enough in the chain before valuing it
if (IsCoinBase() && GetBlocksToMaturity() > 0)
return 0;
if (fUseCache && fAvailableCreditCached)
return nAvailableCreditCached;
int64 nCredit = 0;
for (int i = 0; i < vout.size(); i++)
{
if (!IsSpent(i))
{
const CTxOut &txout = vout[i];
nCredit += txout.GetCredit();
if (!MoneyRange(nCredit))
throw runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
}
}
nAvailableCreditCached = nCredit;
fAvailableCreditCached = true;
return nCredit;
}
int64 GetChange() const
{
if (fChangeCached)
return nChangeCached;
nChangeCached = CTransaction::GetChange();
fChangeCached = true;
return nChangeCached;
}
void GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<string /* address */, int64> >& listReceived,
list<pair<string /* address */, int64> >& listSent, int64& nFee, string& strSentAccount) const;
void GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived,
int64& nSent, int64& nFee) const;
bool IsFromMe() const
{
return (GetDebit() > 0);
}