1 // Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
2 // Distributed under the MIT/X11 software license, see the accompanying
3 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
7 #include "cryptopp/sha.h"
13 //////////////////////////////////////////////////////////////////////////////
18 bool CWallet::AddKey(const CKey& key)
20 if (!CBasicKeyStore::AddKey(key))
24 return CWalletDB(strWalletFile).WriteKey(key.GetPubKey(), key.GetPrivKey());
27 void CWallet::WalletUpdateSpent(const CTransaction &tx)
29 // Anytime a signature is successfully verified, it's proof the outpoint is spent.
30 // Update the wallet spent flag if it doesn't know due to wallet.dat being
31 // restored from backup or the user making copies of wallet.dat.
32 CRITICAL_BLOCK(cs_mapWallet)
34 BOOST_FOREACH(const CTxIn& txin, tx.vin)
36 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
37 if (mi != mapWallet.end())
39 CWalletTx& wtx = (*mi).second;
40 if (!wtx.IsSpent(txin.prevout.n) && IsMine(wtx.vout[txin.prevout.n]))
42 printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
43 wtx.MarkSpent(txin.prevout.n);
45 vWalletUpdated.push_back(txin.prevout.hash);
52 bool CWallet::AddToWallet(const CWalletTx& wtxIn)
54 uint256 hash = wtxIn.GetHash();
55 CRITICAL_BLOCK(cs_mapWallet)
57 // Inserts only if not already there, returns tx inserted or tx found
58 pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
59 CWalletTx& wtx = (*ret.first).second;
61 bool fInsertedNew = ret.second;
63 wtx.nTimeReceived = GetAdjustedTime();
65 bool fUpdated = false;
69 if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
71 wtx.hashBlock = wtxIn.hashBlock;
74 if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
76 wtx.vMerkleBranch = wtxIn.vMerkleBranch;
77 wtx.nIndex = wtxIn.nIndex;
80 if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
82 wtx.fFromMe = wtxIn.fFromMe;
85 fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
89 printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().substr(0,10).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
92 if (fInsertedNew || fUpdated)
93 if (!wtx.WriteToDisk())
96 // If default receiving address gets used, replace it with a new one
97 CScript scriptDefaultKey;
98 scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);
99 BOOST_FOREACH(const CTxOut& txout, wtx.vout)
101 if (txout.scriptPubKey == scriptDefaultKey)
102 SetDefaultKey(GetKeyFromKeyPool());
106 vWalletUpdated.push_back(hash);
108 // since AddToWallet is called directly for self-originating transactions, check for consumption of own coins
109 WalletUpdateSpent(wtx);
117 bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
119 uint256 hash = tx.GetHash();
120 bool fExisted = mapWallet.count(hash);
121 if (fExisted && !fUpdate) return false;
122 if (fExisted || IsMine(tx) || IsFromMe(tx))
124 CWalletTx wtx(this,tx);
125 // Get merkle branch if transaction was found in a block
127 wtx.SetMerkleBranch(pblock);
128 return AddToWallet(wtx);
131 WalletUpdateSpent(tx);
135 bool CWallet::EraseFromWallet(uint256 hash)
139 CRITICAL_BLOCK(cs_mapWallet)
141 if (mapWallet.erase(hash))
142 CWalletDB(strWalletFile).EraseTx(hash);
148 bool CWallet::IsMine(const CTxIn &txin) const
150 CRITICAL_BLOCK(cs_mapWallet)
152 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
153 if (mi != mapWallet.end())
155 const CWalletTx& prev = (*mi).second;
156 if (txin.prevout.n < prev.vout.size())
157 if (IsMine(prev.vout[txin.prevout.n]))
164 int64 CWallet::GetDebit(const CTxIn &txin) const
166 CRITICAL_BLOCK(cs_mapWallet)
168 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
169 if (mi != mapWallet.end())
171 const CWalletTx& prev = (*mi).second;
172 if (txin.prevout.n < prev.vout.size())
173 if (IsMine(prev.vout[txin.prevout.n]))
174 return prev.vout[txin.prevout.n].nValue;
180 int64 CWalletTx::GetTxTime() const
182 if (!fTimeReceivedIsTxTime && hashBlock != 0)
184 // If we did not receive the transaction directly, we rely on the block's
185 // time to figure out when it happened. We use the median over a range
186 // of blocks to try to filter out inaccurate block times.
187 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
188 if (mi != mapBlockIndex.end())
190 CBlockIndex* pindex = (*mi).second;
192 return pindex->GetMedianTime();
195 return nTimeReceived;
198 int CWalletTx::GetRequestCount() const
200 // Returns -1 if it wasn't being tracked
202 CRITICAL_BLOCK(pwallet->cs_mapRequestCount)
209 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
210 if (mi != pwallet->mapRequestCount.end())
211 nRequests = (*mi).second;
216 // Did anyone request this transaction?
217 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(GetHash());
218 if (mi != pwallet->mapRequestCount.end())
220 nRequests = (*mi).second;
222 // How about the block it's in?
223 if (nRequests == 0 && hashBlock != 0)
225 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
226 if (mi != pwallet->mapRequestCount.end())
227 nRequests = (*mi).second;
229 nRequests = 1; // If it's in someone else's block it must have got out
237 void CWalletTx::GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<string, int64> >& listReceived,
238 list<pair<string, int64> >& listSent, int64& nFee, string& strSentAccount) const
240 nGeneratedImmature = nGeneratedMature = nFee = 0;
241 listReceived.clear();
243 strSentAccount = strFromAccount;
247 if (GetBlocksToMaturity() > 0)
248 nGeneratedImmature = pwallet->GetCredit(*this);
250 nGeneratedMature = GetCredit();
255 int64 nDebit = GetDebit();
256 if (nDebit > 0) // debit>0 means we signed/sent this transaction
258 int64 nValueOut = GetValueOut();
259 nFee = nDebit - nValueOut;
262 // Sent/received. Standard client will never generate a send-to-multiple-recipients,
263 // but non-standard clients might (so return a list of address/amount pairs)
264 BOOST_FOREACH(const CTxOut& txout, vout)
268 vector<unsigned char> vchPubKey;
269 if (ExtractHash160(txout.scriptPubKey, hash160))
270 address = Hash160ToAddress(hash160);
271 else if (ExtractPubKey(txout.scriptPubKey, NULL, vchPubKey))
272 address = PubKeyToAddress(vchPubKey);
275 printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
276 this->GetHash().ToString().c_str());
277 address = " unknown ";
280 // Don't report 'change' txouts
281 if (nDebit > 0 && pwallet->IsChange(txout))
285 listSent.push_back(make_pair(address, txout.nValue));
287 if (pwallet->IsMine(txout))
288 listReceived.push_back(make_pair(address, txout.nValue));
293 void CWalletTx::GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived,
294 int64& nSent, int64& nFee) const
296 nGenerated = nReceived = nSent = nFee = 0;
298 int64 allGeneratedImmature, allGeneratedMature, allFee;
299 allGeneratedImmature = allGeneratedMature = allFee = 0;
300 string strSentAccount;
301 list<pair<string, int64> > listReceived;
302 list<pair<string, int64> > listSent;
303 GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
305 if (strAccount == "")
306 nGenerated = allGeneratedMature;
307 if (strAccount == strSentAccount)
309 BOOST_FOREACH(const PAIRTYPE(string,int64)& s, listSent)
313 CRITICAL_BLOCK(pwallet->cs_mapAddressBook)
315 BOOST_FOREACH(const PAIRTYPE(string,int64)& r, listReceived)
317 if (pwallet->mapAddressBook.count(r.first))
319 map<string, string>::const_iterator mi = pwallet->mapAddressBook.find(r.first);
320 if (mi != pwallet->mapAddressBook.end() && (*mi).second == strAccount)
321 nReceived += r.second;
323 else if (strAccount.empty())
325 nReceived += r.second;
331 void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
335 const int COPY_DEPTH = 3;
336 if (SetMerkleBranch() < COPY_DEPTH)
338 vector<uint256> vWorkQueue;
339 BOOST_FOREACH(const CTxIn& txin, vin)
340 vWorkQueue.push_back(txin.prevout.hash);
342 // This critsect is OK because txdb is already open
343 CRITICAL_BLOCK(pwallet->cs_mapWallet)
345 map<uint256, const CMerkleTx*> mapWalletPrev;
346 set<uint256> setAlreadyDone;
347 for (int i = 0; i < vWorkQueue.size(); i++)
349 uint256 hash = vWorkQueue[i];
350 if (setAlreadyDone.count(hash))
352 setAlreadyDone.insert(hash);
355 map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(hash);
356 if (mi != pwallet->mapWallet.end())
359 BOOST_FOREACH(const CMerkleTx& txWalletPrev, (*mi).second.vtxPrev)
360 mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
362 else if (mapWalletPrev.count(hash))
364 tx = *mapWalletPrev[hash];
366 else if (!fClient && txdb.ReadDiskTx(hash, tx))
372 printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
376 int nDepth = tx.SetMerkleBranch();
377 vtxPrev.push_back(tx);
379 if (nDepth < COPY_DEPTH)
380 BOOST_FOREACH(const CTxIn& txin, tx.vin)
381 vWorkQueue.push_back(txin.prevout.hash);
386 reverse(vtxPrev.begin(), vtxPrev.end());
389 bool CWalletTx::WriteToDisk()
391 return CWalletDB(pwallet->strWalletFile).WriteTx(GetHash(), *this);
394 int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
398 CBlockIndex* pindex = pindexStart;
399 CRITICAL_BLOCK(cs_mapWallet)
404 block.ReadFromDisk(pindex, true);
405 BOOST_FOREACH(CTransaction& tx, block.vtx)
407 if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
410 pindex = pindex->pnext;
416 void CWallet::ReacceptWalletTransactions()
420 while (fRepeat) CRITICAL_BLOCK(cs_mapWallet)
423 vector<CDiskTxPos> vMissingTx;
424 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
426 CWalletTx& wtx = item.second;
427 if (wtx.IsCoinBase() && wtx.IsSpent(0))
431 bool fUpdated = false;
432 if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
434 // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
435 if (txindex.vSpent.size() != wtx.vout.size())
437 printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
440 for (int i = 0; i < txindex.vSpent.size(); i++)
444 if (!txindex.vSpent[i].IsNull() && IsMine(wtx.vout[i]))
448 vMissingTx.push_back(txindex.vSpent[i]);
453 printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
460 // Reaccept any txes of ours that aren't already in a block
461 if (!wtx.IsCoinBase())
462 wtx.AcceptWalletTransaction(txdb, false);
465 if (!vMissingTx.empty())
467 // TODO: optimize this to scan just part of the block chain?
468 if (ScanForWalletTransactions(pindexGenesisBlock))
469 fRepeat = true; // Found missing transactions: re-do Reaccept.
474 void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
476 BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
478 if (!tx.IsCoinBase())
480 uint256 hash = tx.GetHash();
481 if (!txdb.ContainsTx(hash))
482 RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
487 uint256 hash = GetHash();
488 if (!txdb.ContainsTx(hash))
490 printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
491 RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
496 void CWalletTx::RelayWalletTransaction()
499 RelayWalletTransaction(txdb);
502 void CWallet::ResendWalletTransactions()
504 // Do this infrequently and randomly to avoid giving away
505 // that these are our transactions.
506 static int64 nNextTime;
507 if (GetTime() < nNextTime)
509 bool fFirst = (nNextTime == 0);
510 nNextTime = GetTime() + GetRand(30 * 60);
514 // Only do it if there's been a new block since last time
515 static int64 nLastTime;
516 if (nTimeBestReceived < nLastTime)
518 nLastTime = GetTime();
520 // Rebroadcast any of our txes that aren't in a block yet
521 printf("ResendWalletTransactions()\n");
523 CRITICAL_BLOCK(cs_mapWallet)
525 // Sort them in chronological order
526 multimap<unsigned int, CWalletTx*> mapSorted;
527 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
529 CWalletTx& wtx = item.second;
530 // Don't rebroadcast until it's had plenty of time that
531 // it should have gotten in already by now.
532 if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
533 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
535 BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
537 CWalletTx& wtx = *item.second;
538 wtx.RelayWalletTransaction(txdb);
548 //////////////////////////////////////////////////////////////////////////////
554 int64 CWallet::GetBalance() const
556 int64 nStart = GetTimeMillis();
559 CRITICAL_BLOCK(cs_mapWallet)
561 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
563 const CWalletTx* pcoin = &(*it).second;
564 if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
566 nTotal += pcoin->GetAvailableCredit();
570 //printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart);
575 bool CWallet::SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
580 // List of values less than target
581 pair<int64, pair<const CWalletTx*,unsigned int> > coinLowestLarger;
582 coinLowestLarger.first = INT64_MAX;
583 coinLowestLarger.second.first = NULL;
584 vector<pair<int64, pair<const CWalletTx*,unsigned int> > > vValue;
585 int64 nTotalLower = 0;
587 CRITICAL_BLOCK(cs_mapWallet)
589 vector<const CWalletTx*> vCoins;
590 vCoins.reserve(mapWallet.size());
591 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
592 vCoins.push_back(&(*it).second);
593 random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
595 BOOST_FOREACH(const CWalletTx* pcoin, vCoins)
597 if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
600 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
603 int nDepth = pcoin->GetDepthInMainChain();
604 if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
607 for (int i = 0; i < pcoin->vout.size(); i++)
609 if (pcoin->IsSpent(i) || !IsMine(pcoin->vout[i]))
612 int64 n = pcoin->vout[i].nValue;
617 pair<int64,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin,i));
619 if (n == nTargetValue)
621 setCoinsRet.insert(coin.second);
622 nValueRet += coin.first;
625 else if (n < nTargetValue + CENT)
627 vValue.push_back(coin);
630 else if (n < coinLowestLarger.first)
632 coinLowestLarger = coin;
638 if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
640 for (int i = 0; i < vValue.size(); ++i)
642 setCoinsRet.insert(vValue[i].second);
643 nValueRet += vValue[i].first;
648 if (nTotalLower < nTargetValue + (coinLowestLarger.second.first ? CENT : 0))
650 if (coinLowestLarger.second.first == NULL)
652 setCoinsRet.insert(coinLowestLarger.second);
653 nValueRet += coinLowestLarger.first;
657 if (nTotalLower >= nTargetValue + CENT)
658 nTargetValue += CENT;
660 // Solve subset sum by stochastic approximation
661 sort(vValue.rbegin(), vValue.rend());
662 vector<char> vfIncluded;
663 vector<char> vfBest(vValue.size(), true);
664 int64 nBest = nTotalLower;
666 for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
668 vfIncluded.assign(vValue.size(), false);
670 bool fReachedTarget = false;
671 for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
673 for (int i = 0; i < vValue.size(); i++)
675 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
677 nTotal += vValue[i].first;
678 vfIncluded[i] = true;
679 if (nTotal >= nTargetValue)
681 fReachedTarget = true;
687 nTotal -= vValue[i].first;
688 vfIncluded[i] = false;
695 // If the next larger is still closer, return it
696 if (coinLowestLarger.second.first && coinLowestLarger.first - nTargetValue <= nBest - nTargetValue)
698 setCoinsRet.insert(coinLowestLarger.second);
699 nValueRet += coinLowestLarger.first;
702 for (int i = 0; i < vValue.size(); i++)
705 setCoinsRet.insert(vValue[i].second);
706 nValueRet += vValue[i].first;
710 printf("SelectCoins() best subset: ");
711 for (int i = 0; i < vValue.size(); i++)
713 printf("%s ", FormatMoney(vValue[i].first).c_str());
714 printf("total %s\n", FormatMoney(nBest).c_str());
720 bool CWallet::SelectCoins(int64 nTargetValue, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
722 return (SelectCoinsMinConf(nTargetValue, 1, 6, setCoinsRet, nValueRet) ||
723 SelectCoinsMinConf(nTargetValue, 1, 1, setCoinsRet, nValueRet) ||
724 SelectCoinsMinConf(nTargetValue, 0, 1, setCoinsRet, nValueRet));
730 bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
733 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
739 if (vecSend.empty() || nValue < 0)
742 wtxNew.pwallet = this;
744 CRITICAL_BLOCK(cs_main)
746 // txdb must be opened before the mapWallet lock
748 CRITICAL_BLOCK(cs_mapWallet)
750 nFeeRet = nTransactionFee;
755 wtxNew.fFromMe = true;
757 int64 nTotalValue = nValue + nFeeRet;
758 double dPriority = 0;
759 // vouts to the payees
760 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
761 wtxNew.vout.push_back(CTxOut(s.second, s.first));
763 // Choose coins to use
764 set<pair<const CWalletTx*,unsigned int> > setCoins;
766 if (!SelectCoins(nTotalValue, setCoins, nValueIn))
768 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
770 int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
771 dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
774 // Fill a vout back to self with any change
775 int64 nChange = nValueIn - nTotalValue;
778 // Note: We use a new key here to keep it from being obvious which side is the change.
779 // The drawback is that by not reusing a previous key, the change may be lost if a
780 // backup is restored, if the backup doesn't have the new private key for the change.
781 // If we reused the old key, it would be possible to add code to look for and
782 // rediscover unknown transactions that were written with keys of ours to recover
783 // post-backup change.
785 // Reserve a new key pair from key pool
786 vector<unsigned char> vchPubKey = reservekey.GetReservedKey();
787 // assert(mapKeys.count(vchPubKey));
789 // Fill a vout to ourself, using same address type as the payment
790 CScript scriptChange;
791 if (vecSend[0].first.GetBitcoinAddressHash160() != 0)
792 scriptChange.SetBitcoinAddress(vchPubKey);
794 scriptChange << vchPubKey << OP_CHECKSIG;
796 // Insert change txn at random position:
797 vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
798 wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
801 reservekey.ReturnKey();
804 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
805 wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
809 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
810 if (!SignSignature(*this, *coin.first, wtxNew, nIn++))
814 unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK);
815 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
819 // Check that enough fee is included
820 int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
821 bool fAllowFree = CTransaction::AllowFree(dPriority);
822 int64 nMinFee = wtxNew.GetMinFee(1, fAllowFree);
823 if (nFeeRet < max(nPayFee, nMinFee))
825 nFeeRet = max(nPayFee, nMinFee);
829 // Fill vtxPrev by copying from previous transactions vtxPrev
830 wtxNew.AddSupportingTransactions(txdb);
831 wtxNew.fTimeReceivedIsTxTime = true;
840 bool CWallet::CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
842 vector< pair<CScript, int64> > vecSend;
843 vecSend.push_back(make_pair(scriptPubKey, nValue));
844 return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
847 // Call after CreateTransaction unless you want to abort
848 bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
850 CRITICAL_BLOCK(cs_main)
852 printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
853 CRITICAL_BLOCK(cs_mapWallet)
855 // This is only to keep the database open to defeat the auto-flush for the
856 // duration of this scope. This is the only place where this optimization
857 // maybe makes sense; please don't do it anywhere else.
858 CWalletDB* pwalletdb = fFileBacked ? new CWalletDB(strWalletFile,"r") : NULL;
860 // Take key pair from key pool so it won't be used again
861 reservekey.KeepKey();
863 // Add tx to wallet, because if it has change it's also ours,
864 // otherwise just for transaction history.
867 // Mark old coins as spent
868 set<CWalletTx*> setCoins;
869 BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
871 CWalletTx &coin = mapWallet[txin.prevout.hash];
873 coin.MarkSpent(txin.prevout.n);
875 vWalletUpdated.push_back(coin.GetHash());
882 // Track how many getdata requests our transaction gets
883 CRITICAL_BLOCK(cs_mapRequestCount)
884 mapRequestCount[wtxNew.GetHash()] = 0;
887 if (!wtxNew.AcceptToMemoryPool())
889 // This must not fail. The transaction has already been signed and recorded.
890 printf("CommitTransaction() : Error: Transaction not valid");
893 wtxNew.RelayWalletTransaction();
902 // requires cs_main lock
903 string CWallet::SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
905 CReserveKey reservekey(this);
907 if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
910 if (nValue + nFeeRequired > GetBalance())
911 strError = strprintf(_("Error: This transaction requires a transaction fee of at least %s because of its amount, complexity, or use of recently received funds "), FormatMoney(nFeeRequired).c_str());
913 strError = _("Error: Transaction creation failed ");
914 printf("SendMoney() : %s", strError.c_str());
918 if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
921 if (!CommitTransaction(wtxNew, reservekey))
922 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.");
930 // requires cs_main lock
931 string CWallet::SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
935 return _("Invalid amount");
936 if (nValue + nTransactionFee > GetBalance())
937 return _("Insufficient funds");
939 // Parse bitcoin address
940 CScript scriptPubKey;
941 if (!scriptPubKey.SetBitcoinAddress(strAddress))
942 return _("Invalid bitcoin address");
944 return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
950 bool CWallet::LoadWallet(bool& fFirstRunRet)
954 fFirstRunRet = false;
955 if (!CWalletDB(strWalletFile,"cr+").LoadWallet(this))
957 fFirstRunRet = vchDefaultKey.empty();
959 if (!mapKeys.count(vchDefaultKey))
961 // Create new keyUser and set as default key
962 RandAddSeedPerfmon();
964 SetDefaultKey(GetKeyFromKeyPool());
965 if (!SetAddressBookName(PubKeyToAddress(vchDefaultKey), ""))
969 CreateThread(ThreadFlushWalletDB, &strWalletFile);
974 bool CWallet::SetAddressBookName(const string& strAddress, const string& strName)
976 mapAddressBook[strAddress] = strName;
979 return CWalletDB(strWalletFile).WriteName(strAddress, strName);
982 bool CWallet::DelAddressBookName(const string& strAddress)
984 mapAddressBook.erase(strAddress);
987 return CWalletDB(strWalletFile).EraseName(strAddress);
991 void CWallet::PrintWallet(const CBlock& block)
993 CRITICAL_BLOCK(cs_mapWallet)
995 if (mapWallet.count(block.vtx[0].GetHash()))
997 CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
998 printf(" mine: %d %d %d", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
1004 bool CWallet::GetTransaction(const uint256 &hashTx, CWalletTx& wtx)
1006 CRITICAL_BLOCK(cs_mapWallet)
1008 map<uint256, CWalletTx>::iterator mi = mapWallet.find(hashTx);
1009 if (mi != mapWallet.end())
1018 bool CWallet::SetDefaultKey(const std::vector<unsigned char> &vchPubKey)
1022 if (!CWalletDB(strWalletFile).WriteDefaultKey(vchPubKey))
1025 vchDefaultKey = vchPubKey;
1029 bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut)
1031 if (!pwallet->fFileBacked)
1033 strWalletFileOut = pwallet->strWalletFile;
1037 void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
1040 keypool.vchPubKey.clear();
1041 CRITICAL_BLOCK(cs_main)
1042 CRITICAL_BLOCK(cs_mapWallet)
1043 CRITICAL_BLOCK(cs_setKeyPool)
1045 CWalletDB walletdb(strWalletFile);
1048 int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
1049 while (setKeyPool.size() < nTargetSize+1)
1052 if (!setKeyPool.empty())
1053 nEnd = *(--setKeyPool.end()) + 1;
1054 if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
1055 throw runtime_error("ReserveKeyFromKeyPool() : writing generated key failed");
1056 setKeyPool.insert(nEnd);
1057 printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size());
1060 // Get the oldest key
1061 assert(!setKeyPool.empty());
1062 nIndex = *(setKeyPool.begin());
1063 setKeyPool.erase(setKeyPool.begin());
1064 if (!walletdb.ReadPool(nIndex, keypool))
1065 throw runtime_error("ReserveKeyFromKeyPool() : read failed");
1066 if (!HaveKey(keypool.vchPubKey))
1067 throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
1068 assert(!keypool.vchPubKey.empty());
1069 printf("keypool reserve %"PRI64d"\n", nIndex);
1073 void CWallet::KeepKey(int64 nIndex)
1075 // Remove from key pool
1078 CWalletDB walletdb(strWalletFile);
1079 CRITICAL_BLOCK(cs_main)
1081 walletdb.ErasePool(nIndex);
1084 printf("keypool keep %"PRI64d"\n", nIndex);
1087 void CWallet::ReturnKey(int64 nIndex)
1089 // Return to key pool
1090 CRITICAL_BLOCK(cs_setKeyPool)
1091 setKeyPool.insert(nIndex);
1092 printf("keypool return %"PRI64d"\n", nIndex);
1095 vector<unsigned char> CWallet::GetKeyFromKeyPool()
1099 ReserveKeyFromKeyPool(nIndex, keypool);
1101 return keypool.vchPubKey;
1104 int64 CWallet::GetOldestKeyPoolTime()
1108 ReserveKeyFromKeyPool(nIndex, keypool);
1110 return keypool.nTime;
1113 vector<unsigned char> CReserveKey::GetReservedKey()
1118 pwallet->ReserveKeyFromKeyPool(nIndex, keypool);
1119 vchPubKey = keypool.vchPubKey;
1121 assert(!vchPubKey.empty());
1125 void CReserveKey::KeepKey()
1128 pwallet->KeepKey(nIndex);
1133 void CReserveKey::ReturnKey()
1136 pwallet->ReturnKey(nIndex);