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// Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_WALLET_H
#define BITCOIN_WALLET_H
#include "bignum.h"
#include "script.h"
class CWalletTx;
class CReserveKey;
class CWalletDB;
extern std::map<uint256, CWalletTx> mapWallet;
extern std::vector<uint256> vWalletUpdated;
extern CCriticalSection cs_mapWallet;
extern std::map<uint256, int> mapRequestCount;
extern CCriticalSection cs_mapRequestCount;
extern std::map<std::string, std::string> mapAddressBook;
extern CCriticalSection cs_mapAddressBook;
extern std::vector<unsigned char> vchDefaultKey;
extern CKey keyUser;
bool AddToWallet(const CWalletTx& wtxIn);
bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate = false);
bool EraseFromWallet(uint256 hash);
void WalletUpdateSpent(const COutPoint& prevout);
int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate = false);
void ReacceptWalletTransactions();
void ResendWalletTransactions();
int64 GetBalance();
bool CreateTransaction(const std::vector<std::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);
std::string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
std::string SendMoneyToBitcoinAddress(std::string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
//
// 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:
std::vector<CMerkleTx> vtxPrev;
std::map<std::string, std::string> mapValue;
std::vector<std::pair<std::string, std::string> > vOrderForm;
unsigned int fTimeReceivedIsTxTime;
unsigned int nTimeReceived; // time received by this node
char fFromMe;
std::string strFromAccount;
std::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;
std::string str;
BOOST_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"))
BOOST_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 std::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 std::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 std::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 std::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, std::list<std::pair<std::string /* address */, int64> >& listReceived,
std::list<std::pair<std::string /* address */, int64> >& listSent, int64& nFee, std::string& strSentAccount) const;
void GetAccountAmounts(const std::string& strAccount, int64& nGenerated, int64& nReceived,
int64& nSent, int64& nFee) const;
bool IsFromMe() const
{
return (GetDebit() > 0);
}
bool IsConfirmed() const
{
// Quick answer in most cases
if (!IsFinal())
return false;
if (GetDepthInMainChain() >= 1)
return true;
if (!IsFromMe()) // using wtx's cached debit
return false;
// If no confirmations but it's from us, we can still
// consider it confirmed if all dependencies are confirmed
std::map<uint256, const CMerkleTx*> mapPrev;
std::vector<const CMerkleTx*> vWorkQueue;
vWorkQueue.reserve(vtxPrev.size()+1);
vWorkQueue.push_back(this);
for (int i = 0; i < vWorkQueue.size(); i++)
{
const CMerkleTx* ptx = vWorkQueue[i];
if (!ptx->IsFinal())
return false;
if (ptx->GetDepthInMainChain() >= 1)
continue;
if (!ptx->IsFromMe())
return false;
if (mapPrev.empty())
BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
mapPrev[tx.GetHash()] = &tx;
BOOST_FOREACH(const CTxIn& txin, ptx->vin)
{
if (!mapPrev.count(txin.prevout.hash))
return false;
vWorkQueue.push_back(mapPrev[txin.prevout.hash]);
}
}
return true;
}
bool WriteToDisk();
int64 GetTxTime() const;
int GetRequestCount() const;
void AddSupportingTransactions(CTxDB& txdb);
bool AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs=true);
bool AcceptWalletTransaction();
void RelayWalletTransaction(CTxDB& txdb);
void RelayWalletTransaction();
};
//
// Private key that includes an expiration date in case it never gets used.
//
class CWalletKey
{
public:
CPrivKey vchPrivKey;
int64 nTimeCreated;
int64 nTimeExpires;
std::string strComment;
//// todo: add something to note what created it (user, getnewaddress, change)
//// maybe should have a map<string, string> property map
CWalletKey(int64 nExpires=0)
{
nTimeCreated = (nExpires ? GetTime() : 0);
nTimeExpires = nExpires;
}
IMPLEMENT_SERIALIZE
(
if (!(nType & SER_GETHASH))
READWRITE(nVersion);
READWRITE(vchPrivKey);
READWRITE(nTimeCreated);
READWRITE(nTimeExpires);
READWRITE(strComment);
)
};
//
// Account information.
// Stored in wallet with key "acc"+string account name
//
class CAccount
{
public:
std::vector<unsigned char> vchPubKey;
CAccount()
{
SetNull();
}
void SetNull()
{
vchPubKey.clear();
}
IMPLEMENT_SERIALIZE
(
if (!(nType & SER_GETHASH))
READWRITE(nVersion);
READWRITE(vchPubKey);
)
};
//
// Internal transfers.
// Database key is acentry<account><counter>
//
class CAccountingEntry
{
public:
std::string strAccount;
int64 nCreditDebit;
int64 nTime;
std::string strOtherAccount;
std::string strComment;
CAccountingEntry()
{
SetNull();
}
void SetNull()
{
nCreditDebit = 0;
nTime = 0;
strAccount.clear();
strOtherAccount.clear();
strComment.clear();
}
IMPLEMENT_SERIALIZE
(
if (!(nType & SER_GETHASH))
READWRITE(nVersion);
// Note: strAccount is serialized as part of the key, not here.
READWRITE(nCreditDebit);
READWRITE(nTime);
READWRITE(strOtherAccount);
READWRITE(strComment);
)
};
#endif