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+ DA1E35BCCE58F94AE0C44B6C2D8AC21D3B8263A594B93EFA335A6C804A1B115C16A977AB237D78C4E9EB6899FF5C9A108F36A9A2FC9FAD96DDAA2E30267587F7bitcoin/src/wallet.cpp(0 . 0)(1 . 1415)
24623 // Copyright (c) 2009-2010 Satoshi Nakamoto
24624 // Copyright (c) 2011 The Bitcoin developers
24625 // Distributed under the MIT/X11 software license, see the accompanying
24626 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
24627
24628 #include "headers.h"
24629 #include "db.h"
24630 #include "crypter.h"
24631
24632 using namespace std;
24633
24634
24635 //////////////////////////////////////////////////////////////////////////////
24636 //
24637 // mapWallet
24638 //
24639
24640 bool CWallet::AddKey(const CKey& key)
24641 {
24642 if (!CCryptoKeyStore::AddKey(key))
24643 return false;
24644 if (!fFileBacked)
24645 return true;
24646 if (!IsCrypted())
24647 return CWalletDB(strWalletFile).WriteKey(key.GetPubKey(), key.GetPrivKey());
24648 return true;
24649 }
24650
24651 bool CWallet::AddCryptedKey(const vector<unsigned char> &vchPubKey, const vector<unsigned char> &vchCryptedSecret)
24652 {
24653 if (!CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret))
24654 return false;
24655 if (!fFileBacked)
24656 return true;
24657 CRITICAL_BLOCK(cs_wallet)
24658 {
24659 if (pwalletdbEncryption)
24660 return pwalletdbEncryption->WriteCryptedKey(vchPubKey, vchCryptedSecret);
24661 else
24662 return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret);
24663 }
24664 return false;
24665 }
24666
24667 bool CWallet::Unlock(const SecureString& strWalletPassphrase)
24668 {
24669 if (!IsLocked())
24670 return false;
24671
24672 CCrypter crypter;
24673 CKeyingMaterial vMasterKey;
24674
24675 CRITICAL_BLOCK(cs_wallet)
24676 BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
24677 {
24678 if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
24679 return false;
24680 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
24681 return false;
24682 if (CCryptoKeyStore::Unlock(vMasterKey))
24683 return true;
24684 }
24685 return false;
24686 }
24687
24688 bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
24689 {
24690 bool fWasLocked = IsLocked();
24691
24692 CRITICAL_BLOCK(cs_wallet)
24693 {
24694 Lock();
24695
24696 CCrypter crypter;
24697 CKeyingMaterial vMasterKey;
24698 BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
24699 {
24700 if(!crypter.SetKeyFromPassphrase(strOldWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
24701 return false;
24702 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
24703 return false;
24704 if (CCryptoKeyStore::Unlock(vMasterKey))
24705 {
24706 int64 nStartTime = GetTimeMillis();
24707 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
24708 pMasterKey.second.nDeriveIterations = pMasterKey.second.nDeriveIterations * (100 / ((double)(GetTimeMillis() - nStartTime)));
24709
24710 nStartTime = GetTimeMillis();
24711 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
24712 pMasterKey.second.nDeriveIterations = (pMasterKey.second.nDeriveIterations + pMasterKey.second.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
24713
24714 if (pMasterKey.second.nDeriveIterations < 25000)
24715 pMasterKey.second.nDeriveIterations = 25000;
24716
24717 printf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);
24718
24719 if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
24720 return false;
24721 if (!crypter.Encrypt(vMasterKey, pMasterKey.second.vchCryptedKey))
24722 return false;
24723 CWalletDB(strWalletFile).WriteMasterKey(pMasterKey.first, pMasterKey.second);
24724 if (fWasLocked)
24725 Lock();
24726 return true;
24727 }
24728 }
24729 }
24730
24731 return false;
24732 }
24733
24734
24735 // This class implements an addrIncoming entry that causes pre-0.4
24736 // clients to crash on startup if reading a private-key-encrypted wallet.
24737 class CCorruptAddress
24738 {
24739 public:
24740 IMPLEMENT_SERIALIZE
24741 (
24742 if (nType & SER_DISK)
24743 READWRITE(nVersion);
24744 )
24745 };
24746
24747 bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
24748 {
24749 if (IsCrypted())
24750 return false;
24751
24752 CKeyingMaterial vMasterKey;
24753 RandAddSeedPerfmon();
24754
24755 vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
24756 RAND_bytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
24757
24758 CMasterKey kMasterKey;
24759
24760 RandAddSeedPerfmon();
24761 kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE);
24762 RAND_bytes(&kMasterKey.vchSalt[0], WALLET_CRYPTO_SALT_SIZE);
24763
24764 CCrypter crypter;
24765 int64 nStartTime = GetTimeMillis();
24766 crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, 25000, kMasterKey.nDerivationMethod);
24767 kMasterKey.nDeriveIterations = 2500000 / ((double)(GetTimeMillis() - nStartTime));
24768
24769 nStartTime = GetTimeMillis();
24770 crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod);
24771 kMasterKey.nDeriveIterations = (kMasterKey.nDeriveIterations + kMasterKey.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
24772
24773 if (kMasterKey.nDeriveIterations < 25000)
24774 kMasterKey.nDeriveIterations = 25000;
24775
24776 printf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey.nDeriveIterations);
24777
24778 if (!crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod))
24779 return false;
24780 if (!crypter.Encrypt(vMasterKey, kMasterKey.vchCryptedKey))
24781 return false;
24782
24783 CRITICAL_BLOCK(cs_wallet)
24784 {
24785 mapMasterKeys[++nMasterKeyMaxID] = kMasterKey;
24786 if (fFileBacked)
24787 {
24788 pwalletdbEncryption = new CWalletDB(strWalletFile);
24789 pwalletdbEncryption->TxnBegin();
24790 pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
24791 }
24792
24793 if (!EncryptKeys(vMasterKey))
24794 {
24795 if (fFileBacked)
24796 pwalletdbEncryption->TxnAbort();
24797 exit(1); //We now probably have half of our keys encrypted in memory, and half not...die and let the user reload their unencrypted wallet.
24798 }
24799
24800 if (fFileBacked)
24801 {
24802 CCorruptAddress corruptAddress;
24803 pwalletdbEncryption->WriteSetting("addrIncoming", corruptAddress);
24804 if (!pwalletdbEncryption->TxnCommit())
24805 exit(1); //We now have keys encrypted in memory, but no on disk...die to avoid confusion and let the user reload their unencrypted wallet.
24806
24807 delete pwalletdbEncryption;
24808 pwalletdbEncryption = NULL;
24809 }
24810
24811 Lock();
24812 Unlock(strWalletPassphrase);
24813 NewKeyPool();
24814 Lock();
24815
24816 // Need to completely rewrite the wallet file; if we don't, bdb might keep
24817 // bits of the unencrypted private key in slack space in the database file.
24818 CDB::Rewrite(strWalletFile);
24819 }
24820
24821 return true;
24822 }
24823
24824 void CWallet::WalletUpdateSpent(const CTransaction &tx)
24825 {
24826 // Anytime a signature is successfully verified, it's proof the outpoint is spent.
24827 // Update the wallet spent flag if it doesn't know due to wallet.dat being
24828 // restored from backup or the user making copies of wallet.dat.
24829 CRITICAL_BLOCK(cs_wallet)
24830 {
24831 BOOST_FOREACH(const CTxIn& txin, tx.vin)
24832 {
24833 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
24834 if (mi != mapWallet.end())
24835 {
24836 CWalletTx& wtx = (*mi).second;
24837 if (!wtx.IsSpent(txin.prevout.n) && IsMine(wtx.vout[txin.prevout.n]))
24838 {
24839 printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
24840 wtx.MarkSpent(txin.prevout.n);
24841 wtx.WriteToDisk();
24842 vWalletUpdated.push_back(txin.prevout.hash);
24843 }
24844 }
24845 }
24846 }
24847 }
24848
24849 bool CWallet::AddToWallet(const CWalletTx& wtxIn)
24850 {
24851 uint256 hash = wtxIn.GetHash();
24852 CRITICAL_BLOCK(cs_wallet)
24853 {
24854 // Inserts only if not already there, returns tx inserted or tx found
24855 pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
24856 CWalletTx& wtx = (*ret.first).second;
24857 wtx.pwallet = this;
24858 bool fInsertedNew = ret.second;
24859 if (fInsertedNew)
24860 wtx.nTimeReceived = GetAdjustedTime();
24861
24862 bool fUpdated = false;
24863 if (!fInsertedNew)
24864 {
24865 // Merge
24866 if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
24867 {
24868 wtx.hashBlock = wtxIn.hashBlock;
24869 fUpdated = true;
24870 }
24871 if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
24872 {
24873 wtx.vMerkleBranch = wtxIn.vMerkleBranch;
24874 wtx.nIndex = wtxIn.nIndex;
24875 fUpdated = true;
24876 }
24877 if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
24878 {
24879 wtx.fFromMe = wtxIn.fFromMe;
24880 fUpdated = true;
24881 }
24882 fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
24883 }
24884
24885 //// debug print
24886 printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().substr(0,10).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
24887
24888 // Write to disk
24889 if (fInsertedNew || fUpdated)
24890 if (!wtx.WriteToDisk())
24891 return false;
24892 #ifndef QT_GUI
24893 // If default receiving address gets used, replace it with a new one
24894 CScript scriptDefaultKey;
24895 scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);
24896 BOOST_FOREACH(const CTxOut& txout, wtx.vout)
24897 {
24898 if (txout.scriptPubKey == scriptDefaultKey)
24899 {
24900 std::vector<unsigned char> newDefaultKey;
24901 if (GetKeyFromPool(newDefaultKey, false))
24902 {
24903 SetDefaultKey(newDefaultKey);
24904 SetAddressBookName(CBitcoinAddress(vchDefaultKey), "");
24905 }
24906 }
24907 }
24908 #endif
24909 // Notify UI
24910 vWalletUpdated.push_back(hash);
24911
24912 // since AddToWallet is called directly for self-originating transactions, check for consumption of own coins
24913 WalletUpdateSpent(wtx);
24914 }
24915
24916 // Refresh UI
24917 MainFrameRepaint();
24918 return true;
24919 }
24920
24921 // Add a transaction to the wallet, or update it.
24922 // pblock is optional, but should be provided if the transaction is known to be in a block.
24923 // If fUpdate is true, existing transactions will be updated.
24924 bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
24925 {
24926 uint256 hash = tx.GetHash();
24927 CRITICAL_BLOCK(cs_wallet)
24928 {
24929 bool fExisted = mapWallet.count(hash);
24930 if (fExisted && !fUpdate) return false;
24931 if (fExisted || IsMine(tx) || IsFromMe(tx))
24932 {
24933 CWalletTx wtx(this,tx);
24934 // Get merkle branch if transaction was found in a block
24935 if (pblock)
24936 wtx.SetMerkleBranch(pblock);
24937 return AddToWallet(wtx);
24938 }
24939 else
24940 WalletUpdateSpent(tx);
24941 }
24942 return false;
24943 }
24944
24945 bool CWallet::EraseFromWallet(uint256 hash)
24946 {
24947 if (!fFileBacked)
24948 return false;
24949 CRITICAL_BLOCK(cs_wallet)
24950 {
24951 if (mapWallet.erase(hash))
24952 CWalletDB(strWalletFile).EraseTx(hash);
24953 }
24954 return true;
24955 }
24956
24957
24958 bool CWallet::IsMine(const CTxIn &txin) const
24959 {
24960 CRITICAL_BLOCK(cs_wallet)
24961 {
24962 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
24963 if (mi != mapWallet.end())
24964 {
24965 const CWalletTx& prev = (*mi).second;
24966 if (txin.prevout.n < prev.vout.size())
24967 if (IsMine(prev.vout[txin.prevout.n]))
24968 return true;
24969 }
24970 }
24971 return false;
24972 }
24973
24974 int64 CWallet::GetDebit(const CTxIn &txin) const
24975 {
24976 CRITICAL_BLOCK(cs_wallet)
24977 {
24978 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
24979 if (mi != mapWallet.end())
24980 {
24981 const CWalletTx& prev = (*mi).second;
24982 if (txin.prevout.n < prev.vout.size())
24983 if (IsMine(prev.vout[txin.prevout.n]))
24984 return prev.vout[txin.prevout.n].nValue;
24985 }
24986 }
24987 return 0;
24988 }
24989
24990 int64 CWalletTx::GetTxTime() const
24991 {
24992 return nTimeReceived;
24993 }
24994
24995 int CWalletTx::GetRequestCount() const
24996 {
24997 // Returns -1 if it wasn't being tracked
24998 int nRequests = -1;
24999 CRITICAL_BLOCK(pwallet->cs_wallet)
25000 {
25001 if (IsCoinBase())
25002 {
25003 // Generated block
25004 if (hashBlock != 0)
25005 {
25006 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
25007 if (mi != pwallet->mapRequestCount.end())
25008 nRequests = (*mi).second;
25009 }
25010 }
25011 else
25012 {
25013 // Did anyone request this transaction?
25014 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(GetHash());
25015 if (mi != pwallet->mapRequestCount.end())
25016 {
25017 nRequests = (*mi).second;
25018
25019 // How about the block it's in?
25020 if (nRequests == 0 && hashBlock != 0)
25021 {
25022 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
25023 if (mi != pwallet->mapRequestCount.end())
25024 nRequests = (*mi).second;
25025 else
25026 nRequests = 1; // If it's in someone else's block it must have got out
25027 }
25028 }
25029 }
25030 }
25031 return nRequests;
25032 }
25033
25034 void CWalletTx::GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<CBitcoinAddress, int64> >& listReceived,
25035 list<pair<CBitcoinAddress, int64> >& listSent, int64& nFee, string& strSentAccount) const
25036 {
25037 nGeneratedImmature = nGeneratedMature = nFee = 0;
25038 listReceived.clear();
25039 listSent.clear();
25040 strSentAccount = strFromAccount;
25041
25042 if (IsCoinBase())
25043 {
25044 if (GetBlocksToMaturity() > 0)
25045 nGeneratedImmature = pwallet->GetCredit(*this);
25046 else
25047 nGeneratedMature = GetCredit();
25048 return;
25049 }
25050
25051 // Compute fee:
25052 int64 nDebit = GetDebit();
25053 if (nDebit > 0) // debit>0 means we signed/sent this transaction
25054 {
25055 int64 nValueOut = GetValueOut();
25056 nFee = nDebit - nValueOut;
25057 }
25058
25059 // Sent/received. Standard client will never generate a send-to-multiple-recipients,
25060 // but non-standard clients might (so return a list of address/amount pairs)
25061 BOOST_FOREACH(const CTxOut& txout, vout)
25062 {
25063 CBitcoinAddress address;
25064 vector<unsigned char> vchPubKey;
25065 if (!ExtractAddress(txout.scriptPubKey, NULL, address))
25066 {
25067 printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
25068 this->GetHash().ToString().c_str());
25069 address = " unknown ";
25070 }
25071
25072 // Don't report 'change' txouts
25073 if (nDebit > 0 && pwallet->IsChange(txout))
25074 continue;
25075
25076 if (nDebit > 0)
25077 listSent.push_back(make_pair(address, txout.nValue));
25078
25079 if (pwallet->IsMine(txout))
25080 listReceived.push_back(make_pair(address, txout.nValue));
25081 }
25082
25083 }
25084
25085 void CWalletTx::GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived,
25086 int64& nSent, int64& nFee) const
25087 {
25088 nGenerated = nReceived = nSent = nFee = 0;
25089
25090 int64 allGeneratedImmature, allGeneratedMature, allFee;
25091 allGeneratedImmature = allGeneratedMature = allFee = 0;
25092 string strSentAccount;
25093 list<pair<CBitcoinAddress, int64> > listReceived;
25094 list<pair<CBitcoinAddress, int64> > listSent;
25095 GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
25096
25097 if (strAccount == "")
25098 nGenerated = allGeneratedMature;
25099 if (strAccount == strSentAccount)
25100 {
25101 BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64)& s, listSent)
25102 nSent += s.second;
25103 nFee = allFee;
25104 }
25105 CRITICAL_BLOCK(pwallet->cs_wallet)
25106 {
25107 BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64)& r, listReceived)
25108 {
25109 if (pwallet->mapAddressBook.count(r.first))
25110 {
25111 map<CBitcoinAddress, string>::const_iterator mi = pwallet->mapAddressBook.find(r.first);
25112 if (mi != pwallet->mapAddressBook.end() && (*mi).second == strAccount)
25113 nReceived += r.second;
25114 }
25115 else if (strAccount.empty())
25116 {
25117 nReceived += r.second;
25118 }
25119 }
25120 }
25121 }
25122
25123 void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
25124 {
25125 vtxPrev.clear();
25126
25127 const int COPY_DEPTH = 3;
25128 if (SetMerkleBranch() < COPY_DEPTH)
25129 {
25130 vector<uint256> vWorkQueue;
25131 BOOST_FOREACH(const CTxIn& txin, vin)
25132 vWorkQueue.push_back(txin.prevout.hash);
25133
25134 // This critsect is OK because txdb is already open
25135 CRITICAL_BLOCK(pwallet->cs_wallet)
25136 {
25137 map<uint256, const CMerkleTx*> mapWalletPrev;
25138 set<uint256> setAlreadyDone;
25139 for (int i = 0; i < vWorkQueue.size(); i++)
25140 {
25141 uint256 hash = vWorkQueue[i];
25142 if (setAlreadyDone.count(hash))
25143 continue;
25144 setAlreadyDone.insert(hash);
25145
25146 CMerkleTx tx;
25147 map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(hash);
25148 if (mi != pwallet->mapWallet.end())
25149 {
25150 tx = (*mi).second;
25151 BOOST_FOREACH(const CMerkleTx& txWalletPrev, (*mi).second.vtxPrev)
25152 mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
25153 }
25154 else if (mapWalletPrev.count(hash))
25155 {
25156 tx = *mapWalletPrev[hash];
25157 }
25158 else if (!fClient && txdb.ReadDiskTx(hash, tx))
25159 {
25160 ;
25161 }
25162 else
25163 {
25164 printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
25165 continue;
25166 }
25167
25168 int nDepth = tx.SetMerkleBranch();
25169 vtxPrev.push_back(tx);
25170
25171 if (nDepth < COPY_DEPTH)
25172 BOOST_FOREACH(const CTxIn& txin, tx.vin)
25173 vWorkQueue.push_back(txin.prevout.hash);
25174 }
25175 }
25176 }
25177
25178 reverse(vtxPrev.begin(), vtxPrev.end());
25179 }
25180
25181 bool CWalletTx::WriteToDisk()
25182 {
25183 return CWalletDB(pwallet->strWalletFile).WriteTx(GetHash(), *this);
25184 }
25185
25186 // Scan the block chain (starting in pindexStart) for transactions
25187 // from or to us. If fUpdate is true, found transactions that already
25188 // exist in the wallet will be updated.
25189 int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
25190 {
25191 int ret = 0;
25192
25193 CBlockIndex* pindex = pindexStart;
25194 CRITICAL_BLOCK(cs_wallet)
25195 {
25196 while (pindex)
25197 {
25198 CBlock block;
25199 block.ReadFromDisk(pindex, true);
25200 BOOST_FOREACH(CTransaction& tx, block.vtx)
25201 {
25202 if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
25203 ret++;
25204 }
25205 pindex = pindex->pnext;
25206 }
25207 }
25208 return ret;
25209 }
25210
25211 void CWallet::ReacceptWalletTransactions()
25212 {
25213 CTxDB txdb("r");
25214 bool fRepeat = true;
25215 while (fRepeat) CRITICAL_BLOCK(cs_wallet)
25216 {
25217 fRepeat = false;
25218 vector<CDiskTxPos> vMissingTx;
25219 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
25220 {
25221 CWalletTx& wtx = item.second;
25222 if (wtx.IsCoinBase() && wtx.IsSpent(0))
25223 continue;
25224
25225 CTxIndex txindex;
25226 bool fUpdated = false;
25227 if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
25228 {
25229 // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
25230 if (txindex.vSpent.size() != wtx.vout.size())
25231 {
25232 printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
25233 continue;
25234 }
25235 for (int i = 0; i < txindex.vSpent.size(); i++)
25236 {
25237 if (wtx.IsSpent(i))
25238 continue;
25239 if (!txindex.vSpent[i].IsNull() && IsMine(wtx.vout[i]))
25240 {
25241 wtx.MarkSpent(i);
25242 fUpdated = true;
25243 vMissingTx.push_back(txindex.vSpent[i]);
25244 }
25245 }
25246 if (fUpdated)
25247 {
25248 printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
25249 wtx.MarkDirty();
25250 wtx.WriteToDisk();
25251 }
25252 }
25253 else
25254 {
25255 // Reaccept any txes of ours that aren't already in a block
25256 if (!wtx.IsCoinBase())
25257 wtx.AcceptWalletTransaction(txdb, false);
25258 }
25259 }
25260 if (!vMissingTx.empty())
25261 {
25262 // TODO: optimize this to scan just part of the block chain?
25263 if (ScanForWalletTransactions(pindexGenesisBlock))
25264 fRepeat = true; // Found missing transactions: re-do Reaccept.
25265 }
25266 }
25267 }
25268
25269 void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
25270 {
25271 BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
25272 {
25273 if (!tx.IsCoinBase())
25274 {
25275 uint256 hash = tx.GetHash();
25276 if (!txdb.ContainsTx(hash))
25277 RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
25278 }
25279 }
25280 if (!IsCoinBase())
25281 {
25282 uint256 hash = GetHash();
25283 if (!txdb.ContainsTx(hash))
25284 {
25285 printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
25286 RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
25287 }
25288 }
25289 }
25290
25291 void CWalletTx::RelayWalletTransaction()
25292 {
25293 CTxDB txdb("r");
25294 RelayWalletTransaction(txdb);
25295 }
25296
25297 void CWallet::ResendWalletTransactions()
25298 {
25299 // Do this infrequently and randomly to avoid giving away
25300 // that these are our transactions.
25301 static int64 nNextTime;
25302 if (GetTime() < nNextTime)
25303 return;
25304 bool fFirst = (nNextTime == 0);
25305 nNextTime = GetTime() + GetRand(30 * 60);
25306 if (fFirst)
25307 return;
25308
25309 // Only do it if there's been a new block since last time
25310 static int64 nLastTime;
25311 if (nTimeBestReceived < nLastTime)
25312 return;
25313 nLastTime = GetTime();
25314
25315 // Rebroadcast any of our txes that aren't in a block yet
25316 printf("ResendWalletTransactions()\n");
25317 CTxDB txdb("r");
25318 CRITICAL_BLOCK(cs_wallet)
25319 {
25320 // Sort them in chronological order
25321 multimap<unsigned int, CWalletTx*> mapSorted;
25322 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
25323 {
25324 CWalletTx& wtx = item.second;
25325 // Don't rebroadcast until it's had plenty of time that
25326 // it should have gotten in already by now.
25327 if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
25328 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
25329 }
25330 BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
25331 {
25332 CWalletTx& wtx = *item.second;
25333 wtx.RelayWalletTransaction(txdb);
25334 }
25335 }
25336 }
25337
25338
25339
25340
25341
25342
25343 //////////////////////////////////////////////////////////////////////////////
25344 //
25345 // Actions
25346 //
25347
25348
25349 int64 CWallet::GetBalance() const
25350 {
25351 int64 nTotal = 0;
25352 CRITICAL_BLOCK(cs_wallet)
25353 {
25354 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
25355 {
25356 const CWalletTx* pcoin = &(*it).second;
25357 if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
25358 continue;
25359 nTotal += pcoin->GetAvailableCredit();
25360 }
25361 }
25362
25363 return nTotal;
25364 }
25365
25366 int64 CWallet::GetUnconfirmedBalance() const
25367 {
25368 int64 nTotal = 0;
25369 CRITICAL_BLOCK(cs_wallet)
25370 {
25371 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
25372 {
25373 const CWalletTx* pcoin = &(*it).second;
25374 if (pcoin->IsFinal() && pcoin->IsConfirmed())
25375 continue;
25376 nTotal += pcoin->GetAvailableCredit();
25377 }
25378 }
25379 return nTotal;
25380 }
25381
25382 bool CWallet::SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
25383 {
25384 setCoinsRet.clear();
25385 nValueRet = 0;
25386
25387 // List of values less than target
25388 pair<int64, pair<const CWalletTx*,unsigned int> > coinLowestLarger;
25389 coinLowestLarger.first = INT64_MAX;
25390 coinLowestLarger.second.first = NULL;
25391 vector<pair<int64, pair<const CWalletTx*,unsigned int> > > vValue;
25392 int64 nTotalLower = 0;
25393
25394 CRITICAL_BLOCK(cs_wallet)
25395 {
25396 vector<const CWalletTx*> vCoins;
25397 vCoins.reserve(mapWallet.size());
25398 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
25399 vCoins.push_back(&(*it).second);
25400 random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
25401
25402 BOOST_FOREACH(const CWalletTx* pcoin, vCoins)
25403 {
25404 if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
25405 continue;
25406
25407 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
25408 continue;
25409
25410 int nDepth = pcoin->GetDepthInMainChain();
25411 if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
25412 continue;
25413
25414 for (int i = 0; i < pcoin->vout.size(); i++)
25415 {
25416 if (pcoin->IsSpent(i) || !IsMine(pcoin->vout[i]))
25417 continue;
25418
25419 int64 n = pcoin->vout[i].nValue;
25420
25421 if (n <= 0)
25422 continue;
25423
25424 pair<int64,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin,i));
25425
25426 if (n == nTargetValue)
25427 {
25428 setCoinsRet.insert(coin.second);
25429 nValueRet += coin.first;
25430 return true;
25431 }
25432 else if (n < nTargetValue + CENT)
25433 {
25434 vValue.push_back(coin);
25435 nTotalLower += n;
25436 }
25437 else if (n < coinLowestLarger.first)
25438 {
25439 coinLowestLarger = coin;
25440 }
25441 }
25442 }
25443 }
25444
25445 if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
25446 {
25447 for (int i = 0; i < vValue.size(); ++i)
25448 {
25449 setCoinsRet.insert(vValue[i].second);
25450 nValueRet += vValue[i].first;
25451 }
25452 return true;
25453 }
25454
25455 if (nTotalLower < nTargetValue + (coinLowestLarger.second.first ? CENT : 0))
25456 {
25457 if (coinLowestLarger.second.first == NULL)
25458 return false;
25459 setCoinsRet.insert(coinLowestLarger.second);
25460 nValueRet += coinLowestLarger.first;
25461 return true;
25462 }
25463
25464 if (nTotalLower >= nTargetValue + CENT)
25465 nTargetValue += CENT;
25466
25467 // Solve subset sum by stochastic approximation
25468 sort(vValue.rbegin(), vValue.rend());
25469 vector<char> vfIncluded;
25470 vector<char> vfBest(vValue.size(), true);
25471 int64 nBest = nTotalLower;
25472
25473 for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
25474 {
25475 vfIncluded.assign(vValue.size(), false);
25476 int64 nTotal = 0;
25477 bool fReachedTarget = false;
25478 for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
25479 {
25480 for (int i = 0; i < vValue.size(); i++)
25481 {
25482 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
25483 {
25484 nTotal += vValue[i].first;
25485 vfIncluded[i] = true;
25486 if (nTotal >= nTargetValue)
25487 {
25488 fReachedTarget = true;
25489 if (nTotal < nBest)
25490 {
25491 nBest = nTotal;
25492 vfBest = vfIncluded;
25493 }
25494 nTotal -= vValue[i].first;
25495 vfIncluded[i] = false;
25496 }
25497 }
25498 }
25499 }
25500 }
25501
25502 // If the next larger is still closer, return it
25503 if (coinLowestLarger.second.first && coinLowestLarger.first - nTargetValue <= nBest - nTargetValue)
25504 {
25505 setCoinsRet.insert(coinLowestLarger.second);
25506 nValueRet += coinLowestLarger.first;
25507 }
25508 else {
25509 for (int i = 0; i < vValue.size(); i++)
25510 if (vfBest[i])
25511 {
25512 setCoinsRet.insert(vValue[i].second);
25513 nValueRet += vValue[i].first;
25514 }
25515
25516 //// debug print
25517 printf("SelectCoins() best subset: ");
25518 for (int i = 0; i < vValue.size(); i++)
25519 if (vfBest[i])
25520 printf("%s ", FormatMoney(vValue[i].first).c_str());
25521 printf("total %s\n", FormatMoney(nBest).c_str());
25522 }
25523
25524 return true;
25525 }
25526
25527 bool CWallet::SelectCoins(int64 nTargetValue, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
25528 {
25529 return (SelectCoinsMinConf(nTargetValue, 1, 6, setCoinsRet, nValueRet) ||
25530 SelectCoinsMinConf(nTargetValue, 1, 1, setCoinsRet, nValueRet) ||
25531 SelectCoinsMinConf(nTargetValue, 0, 1, setCoinsRet, nValueRet));
25532 }
25533
25534
25535
25536
25537 bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
25538 {
25539 int64 nValue = 0;
25540 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
25541 {
25542 if (nValue < 0)
25543 return false;
25544 nValue += s.second;
25545 }
25546 if (vecSend.empty() || nValue < 0)
25547 return false;
25548
25549 wtxNew.pwallet = this;
25550
25551 CRITICAL_BLOCK(cs_main)
25552 CRITICAL_BLOCK(cs_wallet)
25553 {
25554 // txdb must be opened before the mapWallet lock
25555 CTxDB txdb("r");
25556 {
25557 nFeeRet = nTransactionFee;
25558 loop
25559 {
25560 wtxNew.vin.clear();
25561 wtxNew.vout.clear();
25562 wtxNew.fFromMe = true;
25563
25564 int64 nTotalValue = nValue + nFeeRet;
25565 double dPriority = 0;
25566 // vouts to the payees
25567 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
25568 wtxNew.vout.push_back(CTxOut(s.second, s.first));
25569
25570 // Choose coins to use
25571 set<pair<const CWalletTx*,unsigned int> > setCoins;
25572 int64 nValueIn = 0;
25573 if (!SelectCoins(nTotalValue, setCoins, nValueIn))
25574 return false;
25575 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
25576 {
25577 int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
25578 dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
25579 }
25580
25581 int64 nChange = nValueIn - nValue - nFeeRet;
25582 // if sub-cent change is required, the fee must be raised to at least MIN_TX_FEE
25583 // or until nChange becomes zero
25584 if (nFeeRet < MIN_TX_FEE && nChange > 0 && nChange < CENT)
25585 {
25586 int64 nMoveToFee = min(nChange, MIN_TX_FEE - nFeeRet);
25587 nChange -= nMoveToFee;
25588 nFeeRet += nMoveToFee;
25589 }
25590
25591 if (nChange > 0)
25592 {
25593 // Note: We use a new key here to keep it from being obvious which side is the change.
25594 // The drawback is that by not reusing a previous key, the change may be lost if a
25595 // backup is restored, if the backup doesn't have the new private key for the change.
25596 // If we reused the old key, it would be possible to add code to look for and
25597 // rediscover unknown transactions that were written with keys of ours to recover
25598 // post-backup change.
25599
25600 // Reserve a new key pair from key pool
25601 vector<unsigned char> vchPubKey = reservekey.GetReservedKey();
25602 // assert(mapKeys.count(vchPubKey));
25603
25604 // Fill a vout to ourself, using same address type as the payment
25605 CScript scriptChange;
25606 if (vecSend[0].first.GetBitcoinAddress().IsValid())
25607 scriptChange.SetBitcoinAddress(vchPubKey);
25608 else
25609 scriptChange << vchPubKey << OP_CHECKSIG;
25610
25611 // Insert change txn at random position:
25612 vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
25613 wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
25614 }
25615 else
25616 reservekey.ReturnKey();
25617
25618 // Fill vin
25619 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
25620 wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
25621
25622 // Sign
25623 int nIn = 0;
25624 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
25625 if (!SignSignature(*this, *coin.first, wtxNew, nIn++))
25626 return false;
25627
25628 // Limit size
25629 unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK);
25630 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
25631 return false;
25632 dPriority /= nBytes;
25633
25634 // Check that enough fee is included
25635 int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
25636 bool fAllowFree = CTransaction::AllowFree(dPriority);
25637 int64 nMinFee = wtxNew.GetMinFee(1, fAllowFree);
25638 if (nFeeRet < max(nPayFee, nMinFee))
25639 {
25640 nFeeRet = max(nPayFee, nMinFee);
25641 continue;
25642 }
25643
25644 // Fill vtxPrev by copying from previous transactions vtxPrev
25645 wtxNew.AddSupportingTransactions(txdb);
25646 wtxNew.fTimeReceivedIsTxTime = true;
25647
25648 break;
25649 }
25650 }
25651 }
25652 return true;
25653 }
25654
25655 bool CWallet::CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
25656 {
25657 vector< pair<CScript, int64> > vecSend;
25658 vecSend.push_back(make_pair(scriptPubKey, nValue));
25659 return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
25660 }
25661
25662 // Call after CreateTransaction unless you want to abort
25663 bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
25664 {
25665 CRITICAL_BLOCK(cs_main)
25666 CRITICAL_BLOCK(cs_wallet)
25667 {
25668 printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
25669 {
25670 // This is only to keep the database open to defeat the auto-flush for the
25671 // duration of this scope. This is the only place where this optimization
25672 // maybe makes sense; please don't do it anywhere else.
25673 CWalletDB* pwalletdb = fFileBacked ? new CWalletDB(strWalletFile,"r") : NULL;
25674
25675 // Take key pair from key pool so it won't be used again
25676 reservekey.KeepKey();
25677
25678 // Add tx to wallet, because if it has change it's also ours,
25679 // otherwise just for transaction history.
25680 AddToWallet(wtxNew);
25681
25682 // Mark old coins as spent
25683 set<CWalletTx*> setCoins;
25684 BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
25685 {
25686 CWalletTx &coin = mapWallet[txin.prevout.hash];
25687 coin.pwallet = this;
25688 coin.MarkSpent(txin.prevout.n);
25689 coin.WriteToDisk();
25690 vWalletUpdated.push_back(coin.GetHash());
25691 }
25692
25693 if (fFileBacked)
25694 delete pwalletdb;
25695 }
25696
25697 // Track how many getdata requests our transaction gets
25698 mapRequestCount[wtxNew.GetHash()] = 0;
25699
25700 // Broadcast
25701 if (!wtxNew.AcceptToMemoryPool())
25702 {
25703 // This must not fail. The transaction has already been signed and recorded.
25704 printf("CommitTransaction() : Error: Transaction not valid");
25705 return false;
25706 }
25707 wtxNew.RelayWalletTransaction();
25708 }
25709 MainFrameRepaint();
25710 return true;
25711 }
25712
25713
25714
25715
25716 string CWallet::SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
25717 {
25718 CReserveKey reservekey(this);
25719 int64 nFeeRequired;
25720
25721 if (IsLocked())
25722 {
25723 string strError = _("Error: Wallet locked, unable to create transaction ");
25724 printf("SendMoney() : %s", strError.c_str());
25725 return strError;
25726 }
25727 if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
25728 {
25729 string strError;
25730 if (nValue + nFeeRequired > GetBalance())
25731 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());
25732 else
25733 strError = _("Error: Transaction creation failed ");
25734 printf("SendMoney() : %s", strError.c_str());
25735 return strError;
25736 }
25737
25738 if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
25739 return "ABORTED";
25740
25741 if (!CommitTransaction(wtxNew, reservekey))
25742 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.");
25743
25744 MainFrameRepaint();
25745 return "";
25746 }
25747
25748
25749
25750 string CWallet::SendMoneyToBitcoinAddress(const CBitcoinAddress& address, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
25751 {
25752 // Check amount
25753 if (nValue <= 0)
25754 return _("Invalid amount");
25755 if (nValue + nTransactionFee > GetBalance())
25756 return _("Insufficient funds");
25757
25758 // Parse bitcoin address
25759 CScript scriptPubKey;
25760 scriptPubKey.SetBitcoinAddress(address);
25761
25762 return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
25763 }
25764
25765
25766
25767
25768 int CWallet::LoadWallet(bool& fFirstRunRet)
25769 {
25770 if (!fFileBacked)
25771 return false;
25772 fFirstRunRet = false;
25773 int nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this);
25774 if (nLoadWalletRet == DB_NEED_REWRITE)
25775 {
25776 if (CDB::Rewrite(strWalletFile, "\x04pool"))
25777 {
25778 setKeyPool.clear();
25779 // Note: can't top-up keypool here, because wallet is locked.
25780 // User will be prompted to unlock wallet the next operation
25781 // the requires a new key.
25782 }
25783 nLoadWalletRet = DB_NEED_REWRITE;
25784 }
25785
25786 if (nLoadWalletRet != DB_LOAD_OK)
25787 return nLoadWalletRet;
25788 fFirstRunRet = vchDefaultKey.empty();
25789
25790 if (!HaveKey(Hash160(vchDefaultKey)))
25791 {
25792 // Create new keyUser and set as default key
25793 RandAddSeedPerfmon();
25794
25795 std::vector<unsigned char> newDefaultKey;
25796 if (!GetKeyFromPool(newDefaultKey, false))
25797 return DB_LOAD_FAIL;
25798 SetDefaultKey(newDefaultKey);
25799 if (!SetAddressBookName(CBitcoinAddress(vchDefaultKey), ""))
25800 return DB_LOAD_FAIL;
25801 }
25802
25803 CreateThread(ThreadFlushWalletDB, &strWalletFile);
25804 return DB_LOAD_OK;
25805 }
25806
25807
25808 bool CWallet::SetAddressBookName(const CBitcoinAddress& address, const string& strName)
25809 {
25810 mapAddressBook[address] = strName;
25811 if (!fFileBacked)
25812 return false;
25813 return CWalletDB(strWalletFile).WriteName(address.ToString(), strName);
25814 }
25815
25816 bool CWallet::DelAddressBookName(const CBitcoinAddress& address)
25817 {
25818 mapAddressBook.erase(address);
25819 if (!fFileBacked)
25820 return false;
25821 return CWalletDB(strWalletFile).EraseName(address.ToString());
25822 }
25823
25824
25825 void CWallet::PrintWallet(const CBlock& block)
25826 {
25827 CRITICAL_BLOCK(cs_wallet)
25828 {
25829 if (mapWallet.count(block.vtx[0].GetHash()))
25830 {
25831 CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
25832 printf(" mine: %d %d %d", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
25833 }
25834 }
25835 printf("\n");
25836 }
25837
25838 bool CWallet::GetTransaction(const uint256 &hashTx, CWalletTx& wtx)
25839 {
25840 CRITICAL_BLOCK(cs_wallet)
25841 {
25842 map<uint256, CWalletTx>::iterator mi = mapWallet.find(hashTx);
25843 if (mi != mapWallet.end())
25844 {
25845 wtx = (*mi).second;
25846 return true;
25847 }
25848 }
25849 return false;
25850 }
25851
25852 bool CWallet::SetDefaultKey(const std::vector<unsigned char> &vchPubKey)
25853 {
25854 if (fFileBacked)
25855 {
25856 if (!CWalletDB(strWalletFile).WriteDefaultKey(vchPubKey))
25857 return false;
25858 }
25859 vchDefaultKey = vchPubKey;
25860 return true;
25861 }
25862
25863 bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut)
25864 {
25865 if (!pwallet->fFileBacked)
25866 return false;
25867 strWalletFileOut = pwallet->strWalletFile;
25868 return true;
25869 }
25870
25871 //
25872 // Mark old keypool keys as used,
25873 // and generate all new keys
25874 //
25875 bool CWallet::NewKeyPool()
25876 {
25877 CRITICAL_BLOCK(cs_wallet)
25878 {
25879 CWalletDB walletdb(strWalletFile);
25880 BOOST_FOREACH(int64 nIndex, setKeyPool)
25881 walletdb.ErasePool(nIndex);
25882 setKeyPool.clear();
25883
25884 if (IsLocked())
25885 return false;
25886
25887 int64 nKeys = max(GetArg("-keypool", 100), (int64)0);
25888 for (int i = 0; i < nKeys; i++)
25889 {
25890 int64 nIndex = i+1;
25891 walletdb.WritePool(nIndex, CKeyPool(GenerateNewKey()));
25892 setKeyPool.insert(nIndex);
25893 }
25894 printf("CWallet::NewKeyPool wrote %"PRI64d" new keys\n", nKeys);
25895 }
25896 return true;
25897 }
25898
25899 bool CWallet::TopUpKeyPool()
25900 {
25901 CRITICAL_BLOCK(cs_wallet)
25902 {
25903 if (IsLocked())
25904 return false;
25905
25906 CWalletDB walletdb(strWalletFile);
25907
25908 // Top up key pool
25909 int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
25910 while (setKeyPool.size() < nTargetSize+1)
25911 {
25912 int64 nEnd = 1;
25913 if (!setKeyPool.empty())
25914 nEnd = *(--setKeyPool.end()) + 1;
25915 if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
25916 throw runtime_error("TopUpKeyPool() : writing generated key failed");
25917 setKeyPool.insert(nEnd);
25918 printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size());
25919 }
25920 }
25921 return true;
25922 }
25923
25924 void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
25925 {
25926 nIndex = -1;
25927 keypool.vchPubKey.clear();
25928 CRITICAL_BLOCK(cs_wallet)
25929 {
25930 if (!IsLocked())
25931 TopUpKeyPool();
25932
25933 // Get the oldest key
25934 if(setKeyPool.empty())
25935 return;
25936
25937 CWalletDB walletdb(strWalletFile);
25938
25939 nIndex = *(setKeyPool.begin());
25940 setKeyPool.erase(setKeyPool.begin());
25941 if (!walletdb.ReadPool(nIndex, keypool))
25942 throw runtime_error("ReserveKeyFromKeyPool() : read failed");
25943 if (!HaveKey(Hash160(keypool.vchPubKey)))
25944 throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
25945 assert(!keypool.vchPubKey.empty());
25946 printf("keypool reserve %"PRI64d"\n", nIndex);
25947 }
25948 }
25949
25950 void CWallet::KeepKey(int64 nIndex)
25951 {
25952 // Remove from key pool
25953 if (fFileBacked)
25954 {
25955 CWalletDB walletdb(strWalletFile);
25956 walletdb.ErasePool(nIndex);
25957 }
25958 printf("keypool keep %"PRI64d"\n", nIndex);
25959 }
25960
25961 void CWallet::ReturnKey(int64 nIndex)
25962 {
25963 // Return to key pool
25964 CRITICAL_BLOCK(cs_wallet)
25965 setKeyPool.insert(nIndex);
25966 printf("keypool return %"PRI64d"\n", nIndex);
25967 }
25968
25969 bool CWallet::GetKeyFromPool(vector<unsigned char>& result, bool fAllowReuse)
25970 {
25971 int64 nIndex = 0;
25972 CKeyPool keypool;
25973 CRITICAL_BLOCK(cs_wallet)
25974 {
25975 ReserveKeyFromKeyPool(nIndex, keypool);
25976 if (nIndex == -1)
25977 {
25978 if (fAllowReuse && !vchDefaultKey.empty())
25979 {
25980 result = vchDefaultKey;
25981 return true;
25982 }
25983 if (IsLocked()) return false;
25984 result = GenerateNewKey();
25985 return true;
25986 }
25987 KeepKey(nIndex);
25988 result = keypool.vchPubKey;
25989 }
25990 return true;
25991 }
25992
25993 int64 CWallet::GetOldestKeyPoolTime()
25994 {
25995 int64 nIndex = 0;
25996 CKeyPool keypool;
25997 ReserveKeyFromKeyPool(nIndex, keypool);
25998 if (nIndex == -1)
25999 return GetTime();
26000 ReturnKey(nIndex);
26001 return keypool.nTime;
26002 }
26003
26004 vector<unsigned char> CReserveKey::GetReservedKey()
26005 {
26006 if (nIndex == -1)
26007 {
26008 CKeyPool keypool;
26009 pwallet->ReserveKeyFromKeyPool(nIndex, keypool);
26010 if (nIndex != -1)
26011 vchPubKey = keypool.vchPubKey;
26012 else
26013 {
26014 printf("CReserveKey::GetReservedKey(): Warning: using default key instead of a new key, top up your keypool.");
26015 vchPubKey = pwallet->vchDefaultKey;
26016 }
26017 }
26018 assert(!vchPubKey.empty());
26019 return vchPubKey;
26020 }
26021
26022 void CReserveKey::KeepKey()
26023 {
26024 if (nIndex != -1)
26025 pwallet->KeepKey(nIndex);
26026 nIndex = -1;
26027 vchPubKey.clear();
26028 }
26029
26030 void CReserveKey::ReturnKey()
26031 {
26032 if (nIndex != -1)
26033 pwallet->ReturnKey(nIndex);
26034 nIndex = -1;
26035 vchPubKey.clear();
26036 }
26037