raw
genesis                 1 // Copyright (c) 2009-2010 Satoshi Nakamoto
genesis                 2 // Copyright (c) 2011 The Bitcoin developers
genesis                 3 // Distributed under the MIT/X11 software license, see the accompanying
genesis                 4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
genesis                 5 
genesis                 6 #include "headers.h"
genesis                 7 #include "db.h"
genesis                 8 #include "crypter.h"
genesis                 9 
genesis                10 using namespace std;
genesis                11 
genesis                12 
genesis                13 //////////////////////////////////////////////////////////////////////////////
genesis                14 //
genesis                15 // mapWallet
genesis                16 //
genesis                17 
genesis                18 bool CWallet::AddKey(const CKey& key)
genesis                19 {
genesis                20     if (!CCryptoKeyStore::AddKey(key))
genesis                21         return false;
genesis                22     if (!fFileBacked)
genesis                23         return true;
genesis                24     if (!IsCrypted())
genesis                25         return CWalletDB(strWalletFile).WriteKey(key.GetPubKey(), key.GetPrivKey());
genesis                26     return true;
genesis                27 }
genesis                28 
genesis                29 bool CWallet::AddCryptedKey(const vector<unsigned char> &vchPubKey, const vector<unsigned char> &vchCryptedSecret)
genesis                30 {
genesis                31     if (!CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret))
genesis                32         return false;
genesis                33     if (!fFileBacked)
genesis                34         return true;
genesis                35     CRITICAL_BLOCK(cs_wallet)
genesis                36     {
genesis                37         if (pwalletdbEncryption)
genesis                38             return pwalletdbEncryption->WriteCryptedKey(vchPubKey, vchCryptedSecret);
genesis                39         else
genesis                40             return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret);
genesis                41     }
genesis                42     return false;
genesis                43 }
genesis                44 
genesis                45 bool CWallet::Unlock(const SecureString& strWalletPassphrase)
genesis                46 {
genesis                47     if (!IsLocked())
genesis                48         return false;
genesis                49 
genesis                50     CCrypter crypter;
genesis                51     CKeyingMaterial vMasterKey;
genesis                52 
genesis                53     CRITICAL_BLOCK(cs_wallet)
genesis                54         BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
genesis                55         {
genesis                56             if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
genesis                57                 return false;
genesis                58             if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
genesis                59                 return false;
genesis                60             if (CCryptoKeyStore::Unlock(vMasterKey))
genesis                61                 return true;
genesis                62         }
genesis                63     return false;
genesis                64 }
genesis                65 
genesis                66 bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
genesis                67 {
genesis                68     bool fWasLocked = IsLocked();
genesis                69 
genesis                70     CRITICAL_BLOCK(cs_wallet)
genesis                71     {
genesis                72         Lock();
genesis                73 
genesis                74         CCrypter crypter;
genesis                75         CKeyingMaterial vMasterKey;
genesis                76         BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
genesis                77         {
genesis                78             if(!crypter.SetKeyFromPassphrase(strOldWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
genesis                79                 return false;
genesis                80             if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
genesis                81                 return false;
genesis                82             if (CCryptoKeyStore::Unlock(vMasterKey))
genesis                83             {
genesis                84                 int64 nStartTime = GetTimeMillis();
genesis                85                 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
genesis                86                 pMasterKey.second.nDeriveIterations = pMasterKey.second.nDeriveIterations * (100 / ((double)(GetTimeMillis() - nStartTime)));
genesis                87 
genesis                88                 nStartTime = GetTimeMillis();
genesis                89                 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
genesis                90                 pMasterKey.second.nDeriveIterations = (pMasterKey.second.nDeriveIterations + pMasterKey.second.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
genesis                91 
genesis                92                 if (pMasterKey.second.nDeriveIterations < 25000)
genesis                93                     pMasterKey.second.nDeriveIterations = 25000;
genesis                94 
genesis                95                 printf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);
genesis                96 
genesis                97                 if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
genesis                98                     return false;
genesis                99                 if (!crypter.Encrypt(vMasterKey, pMasterKey.second.vchCryptedKey))
genesis               100                     return false;
genesis               101                 CWalletDB(strWalletFile).WriteMasterKey(pMasterKey.first, pMasterKey.second);
genesis               102                 if (fWasLocked)
genesis               103                     Lock();
genesis               104                 return true;
genesis               105             }
genesis               106         }
genesis               107     }
genesis               108 
genesis               109     return false;
genesis               110 }
genesis               111 
genesis               112 
genesis               113 // This class implements an addrIncoming entry that causes pre-0.4
genesis               114 // clients to crash on startup if reading a private-key-encrypted wallet.
genesis               115 class CCorruptAddress
genesis               116 {
genesis               117 public:
genesis               118     IMPLEMENT_SERIALIZE
genesis               119     (
genesis               120         if (nType & SER_DISK)
genesis               121             READWRITE(nVersion);
genesis               122     )
genesis               123 };
genesis               124 
genesis               125 bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
genesis               126 {
genesis               127     if (IsCrypted())
genesis               128         return false;
genesis               129 
genesis               130     CKeyingMaterial vMasterKey;
genesis               131     RandAddSeedPerfmon();
genesis               132 
genesis               133     vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
genesis               134     RAND_bytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
genesis               135 
genesis               136     CMasterKey kMasterKey;
genesis               137 
genesis               138     RandAddSeedPerfmon();
genesis               139     kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE);
genesis               140     RAND_bytes(&kMasterKey.vchSalt[0], WALLET_CRYPTO_SALT_SIZE);
genesis               141 
genesis               142     CCrypter crypter;
genesis               143     int64 nStartTime = GetTimeMillis();
genesis               144     crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, 25000, kMasterKey.nDerivationMethod);
genesis               145     kMasterKey.nDeriveIterations = 2500000 / ((double)(GetTimeMillis() - nStartTime));
genesis               146 
genesis               147     nStartTime = GetTimeMillis();
genesis               148     crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod);
genesis               149     kMasterKey.nDeriveIterations = (kMasterKey.nDeriveIterations + kMasterKey.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
genesis               150 
genesis               151     if (kMasterKey.nDeriveIterations < 25000)
genesis               152         kMasterKey.nDeriveIterations = 25000;
genesis               153 
genesis               154     printf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey.nDeriveIterations);
genesis               155 
genesis               156     if (!crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod))
genesis               157         return false;
genesis               158     if (!crypter.Encrypt(vMasterKey, kMasterKey.vchCryptedKey))
genesis               159         return false;
genesis               160 
genesis               161     CRITICAL_BLOCK(cs_wallet)
genesis               162     {
genesis               163         mapMasterKeys[++nMasterKeyMaxID] = kMasterKey;
genesis               164         if (fFileBacked)
genesis               165         {
genesis               166             pwalletdbEncryption = new CWalletDB(strWalletFile);
genesis               167             pwalletdbEncryption->TxnBegin();
genesis               168             pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
genesis               169         }
genesis               170 
genesis               171         if (!EncryptKeys(vMasterKey))
genesis               172         {
genesis               173             if (fFileBacked)
genesis               174                 pwalletdbEncryption->TxnAbort();
genesis               175             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.
genesis               176         }
genesis               177 
genesis               178         if (fFileBacked)
genesis               179         {
genesis               180             CCorruptAddress corruptAddress;
genesis               181             pwalletdbEncryption->WriteSetting("addrIncoming", corruptAddress);
genesis               182             if (!pwalletdbEncryption->TxnCommit())
genesis               183                 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.
genesis               184 
genesis               185             delete pwalletdbEncryption;
genesis               186             pwalletdbEncryption = NULL;
genesis               187         }
genesis               188 
genesis               189         Lock();
genesis               190         Unlock(strWalletPassphrase);
genesis               191         NewKeyPool();
genesis               192         Lock();
genesis               193 
genesis               194         // Need to completely rewrite the wallet file; if we don't, bdb might keep
genesis               195         // bits of the unencrypted private key in slack space in the database file.
genesis               196         CDB::Rewrite(strWalletFile);
genesis               197     }
genesis               198 
genesis               199     return true;
genesis               200 }
genesis               201 
genesis               202 void CWallet::WalletUpdateSpent(const CTransaction &tx)
genesis               203 {
genesis               204     // Anytime a signature is successfully verified, it's proof the outpoint is spent.
genesis               205     // Update the wallet spent flag if it doesn't know due to wallet.dat being
genesis               206     // restored from backup or the user making copies of wallet.dat.
genesis               207     CRITICAL_BLOCK(cs_wallet)
genesis               208     {
genesis               209         BOOST_FOREACH(const CTxIn& txin, tx.vin)
genesis               210         {
genesis               211             map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
genesis               212             if (mi != mapWallet.end())
genesis               213             {
genesis               214                 CWalletTx& wtx = (*mi).second;
genesis               215                 if (!wtx.IsSpent(txin.prevout.n) && IsMine(wtx.vout[txin.prevout.n]))
genesis               216                 {
genesis               217                     printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
genesis               218                     wtx.MarkSpent(txin.prevout.n);
genesis               219                     wtx.WriteToDisk();
genesis               220                     vWalletUpdated.push_back(txin.prevout.hash);
genesis               221                 }
genesis               222             }
genesis               223         }
genesis               224     }
genesis               225 }
genesis               226 
genesis               227 bool CWallet::AddToWallet(const CWalletTx& wtxIn)
genesis               228 {
genesis               229     uint256 hash = wtxIn.GetHash();
genesis               230     CRITICAL_BLOCK(cs_wallet)
genesis               231     {
genesis               232         // Inserts only if not already there, returns tx inserted or tx found
genesis               233         pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
genesis               234         CWalletTx& wtx = (*ret.first).second;
genesis               235         wtx.pwallet = this;
genesis               236         bool fInsertedNew = ret.second;
genesis               237         if (fInsertedNew)
genesis               238             wtx.nTimeReceived = GetAdjustedTime();
genesis               239 
genesis               240         bool fUpdated = false;
genesis               241         if (!fInsertedNew)
genesis               242         {
genesis               243             // Merge
genesis               244             if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
genesis               245             {
genesis               246                 wtx.hashBlock = wtxIn.hashBlock;
genesis               247                 fUpdated = true;
genesis               248             }
genesis               249             if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
genesis               250             {
genesis               251                 wtx.vMerkleBranch = wtxIn.vMerkleBranch;
genesis               252                 wtx.nIndex = wtxIn.nIndex;
genesis               253                 fUpdated = true;
genesis               254             }
genesis               255             if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
genesis               256             {
genesis               257                 wtx.fFromMe = wtxIn.fFromMe;
genesis               258                 fUpdated = true;
genesis               259             }
genesis               260             fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
genesis               261         }
genesis               262 
genesis               263         //// debug print
genesis               264         printf("AddToWallet %s  %s%s\n", wtxIn.GetHash().ToString().substr(0,10).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
genesis               265 
genesis               266         // Write to disk
genesis               267         if (fInsertedNew || fUpdated)
genesis               268             if (!wtx.WriteToDisk())
genesis               269                 return false;
genesis               270         // If default receiving address gets used, replace it with a new one
genesis               271         CScript scriptDefaultKey;
genesis               272         scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);
genesis               273         BOOST_FOREACH(const CTxOut& txout, wtx.vout)
genesis               274         {
genesis               275             if (txout.scriptPubKey == scriptDefaultKey)
genesis               276             {
genesis               277                 std::vector<unsigned char> newDefaultKey;
genesis               278                 if (GetKeyFromPool(newDefaultKey, false))
genesis               279                 {
genesis               280                     SetDefaultKey(newDefaultKey);
genesis               281                     SetAddressBookName(CBitcoinAddress(vchDefaultKey), "");
genesis               282                 }
genesis               283             }
genesis               284         }
genesis               285         // Notify UI
genesis               286         vWalletUpdated.push_back(hash);
genesis               287 
genesis               288         // since AddToWallet is called directly for self-originating transactions, check for consumption of own coins
genesis               289         WalletUpdateSpent(wtx);
genesis               290     }
genesis               291 
genesis               292     // Refresh UI
genesis               293     MainFrameRepaint();
genesis               294     return true;
genesis               295 }
genesis               296 
genesis               297 // Add a transaction to the wallet, or update it.
genesis               298 // pblock is optional, but should be provided if the transaction is known to be in a block.
genesis               299 // If fUpdate is true, existing transactions will be updated.
genesis               300 bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
genesis               301 {
genesis               302     uint256 hash = tx.GetHash();
genesis               303     CRITICAL_BLOCK(cs_wallet)
genesis               304     {
genesis               305         bool fExisted = mapWallet.count(hash);
genesis               306         if (fExisted && !fUpdate) return false;
genesis               307         if (fExisted || IsMine(tx) || IsFromMe(tx))
genesis               308         {
genesis               309             CWalletTx wtx(this,tx);
genesis               310             // Get merkle branch if transaction was found in a block
genesis               311             if (pblock)
genesis               312                 wtx.SetMerkleBranch(pblock);
genesis               313             return AddToWallet(wtx);
genesis               314         }
genesis               315         else
genesis               316             WalletUpdateSpent(tx);
genesis               317     }
genesis               318     return false;
genesis               319 }
genesis               320 
genesis               321 bool CWallet::EraseFromWallet(uint256 hash)
genesis               322 {
genesis               323     if (!fFileBacked)
genesis               324         return false;
genesis               325     CRITICAL_BLOCK(cs_wallet)
genesis               326     {
genesis               327         if (mapWallet.erase(hash))
genesis               328             CWalletDB(strWalletFile).EraseTx(hash);
genesis               329     }
genesis               330     return true;
genesis               331 }
genesis               332 
genesis               333 
genesis               334 bool CWallet::IsMine(const CTxIn &txin) const
genesis               335 {
genesis               336     CRITICAL_BLOCK(cs_wallet)
genesis               337     {
genesis               338         map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
genesis               339         if (mi != mapWallet.end())
genesis               340         {
genesis               341             const CWalletTx& prev = (*mi).second;
genesis               342             if (txin.prevout.n < prev.vout.size())
genesis               343                 if (IsMine(prev.vout[txin.prevout.n]))
genesis               344                     return true;
genesis               345         }
genesis               346     }
genesis               347     return false;
genesis               348 }
genesis               349 
genesis               350 int64 CWallet::GetDebit(const CTxIn &txin) const
genesis               351 {
genesis               352     CRITICAL_BLOCK(cs_wallet)
genesis               353     {
genesis               354         map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
genesis               355         if (mi != mapWallet.end())
genesis               356         {
genesis               357             const CWalletTx& prev = (*mi).second;
genesis               358             if (txin.prevout.n < prev.vout.size())
genesis               359                 if (IsMine(prev.vout[txin.prevout.n]))
genesis               360                     return prev.vout[txin.prevout.n].nValue;
genesis               361         }
genesis               362     }
genesis               363     return 0;
genesis               364 }
genesis               365 
genesis               366 int64 CWalletTx::GetTxTime() const
genesis               367 {
genesis               368     return nTimeReceived;
genesis               369 }
genesis               370 
genesis               371 int CWalletTx::GetRequestCount() const
genesis               372 {
genesis               373     // Returns -1 if it wasn't being tracked
genesis               374     int nRequests = -1;
genesis               375     CRITICAL_BLOCK(pwallet->cs_wallet)
genesis               376     {
genesis               377         if (IsCoinBase())
genesis               378         {
genesis               379             // Generated block
genesis               380             if (hashBlock != 0)
genesis               381             {
genesis               382                 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
genesis               383                 if (mi != pwallet->mapRequestCount.end())
genesis               384                     nRequests = (*mi).second;
genesis               385             }
genesis               386         }
genesis               387         else
genesis               388         {
genesis               389             // Did anyone request this transaction?
genesis               390             map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(GetHash());
genesis               391             if (mi != pwallet->mapRequestCount.end())
genesis               392             {
genesis               393                 nRequests = (*mi).second;
genesis               394 
genesis               395                 // How about the block it's in?
genesis               396                 if (nRequests == 0 && hashBlock != 0)
genesis               397                 {
genesis               398                     map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
genesis               399                     if (mi != pwallet->mapRequestCount.end())
genesis               400                         nRequests = (*mi).second;
genesis               401                     else
genesis               402                         nRequests = 1; // If it's in someone else's block it must have got out
genesis               403                 }
genesis               404             }
genesis               405         }
genesis               406     }
genesis               407     return nRequests;
genesis               408 }
genesis               409 
genesis               410 void CWalletTx::GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<CBitcoinAddress, int64> >& listReceived,
genesis               411                            list<pair<CBitcoinAddress, int64> >& listSent, int64& nFee, string& strSentAccount) const
genesis               412 {
genesis               413     nGeneratedImmature = nGeneratedMature = nFee = 0;
genesis               414     listReceived.clear();
genesis               415     listSent.clear();
genesis               416     strSentAccount = strFromAccount;
genesis               417 
genesis               418     if (IsCoinBase())
genesis               419     {
genesis               420         if (GetBlocksToMaturity() > 0)
genesis               421             nGeneratedImmature = pwallet->GetCredit(*this);
genesis               422         else
genesis               423             nGeneratedMature = GetCredit();
genesis               424         return;
genesis               425     }
genesis               426 
genesis               427     // Compute fee:
genesis               428     int64 nDebit = GetDebit();
genesis               429     if (nDebit > 0) // debit>0 means we signed/sent this transaction
genesis               430     {
genesis               431         int64 nValueOut = GetValueOut();
genesis               432         nFee = nDebit - nValueOut;
genesis               433     }
genesis               434 
genesis               435     // Sent/received.  Standard client will never generate a send-to-multiple-recipients,
genesis               436     // but non-standard clients might (so return a list of address/amount pairs)
genesis               437     BOOST_FOREACH(const CTxOut& txout, vout)
genesis               438     {
genesis               439         CBitcoinAddress address;
genesis               440         vector<unsigned char> vchPubKey;
genesis               441         if (!ExtractAddress(txout.scriptPubKey, NULL, address))
genesis               442         {
genesis               443             printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
genesis               444                    this->GetHash().ToString().c_str());
genesis               445             address = " unknown ";
genesis               446         }
genesis               447 
genesis               448         // Don't report 'change' txouts
genesis               449         if (nDebit > 0 && pwallet->IsChange(txout))
genesis               450             continue;
genesis               451 
genesis               452         if (nDebit > 0)
genesis               453             listSent.push_back(make_pair(address, txout.nValue));
genesis               454 
genesis               455         if (pwallet->IsMine(txout))
genesis               456             listReceived.push_back(make_pair(address, txout.nValue));
genesis               457     }
genesis               458 
genesis               459 }
genesis               460 
genesis               461 void CWalletTx::GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived, 
genesis               462                                   int64& nSent, int64& nFee) const
genesis               463 {
genesis               464     nGenerated = nReceived = nSent = nFee = 0;
genesis               465 
genesis               466     int64 allGeneratedImmature, allGeneratedMature, allFee;
genesis               467     allGeneratedImmature = allGeneratedMature = allFee = 0;
genesis               468     string strSentAccount;
genesis               469     list<pair<CBitcoinAddress, int64> > listReceived;
genesis               470     list<pair<CBitcoinAddress, int64> > listSent;
genesis               471     GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
genesis               472 
genesis               473     if (strAccount == "")
genesis               474         nGenerated = allGeneratedMature;
genesis               475     if (strAccount == strSentAccount)
genesis               476     {
genesis               477         BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64)& s, listSent)
genesis               478             nSent += s.second;
genesis               479         nFee = allFee;
genesis               480     }
genesis               481     CRITICAL_BLOCK(pwallet->cs_wallet)
genesis               482     {
genesis               483         BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64)& r, listReceived)
genesis               484         {
genesis               485             if (pwallet->mapAddressBook.count(r.first))
genesis               486             {
genesis               487                 map<CBitcoinAddress, string>::const_iterator mi = pwallet->mapAddressBook.find(r.first);
genesis               488                 if (mi != pwallet->mapAddressBook.end() && (*mi).second == strAccount)
genesis               489                     nReceived += r.second;
genesis               490             }
genesis               491             else if (strAccount.empty())
genesis               492             {
genesis               493                 nReceived += r.second;
genesis               494             }
genesis               495         }
genesis               496     }
genesis               497 }
genesis               498 
genesis               499 void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
genesis               500 {
genesis               501     vtxPrev.clear();
genesis               502 
genesis               503     const int COPY_DEPTH = 3;
genesis               504     if (SetMerkleBranch() < COPY_DEPTH)
genesis               505     {
genesis               506         vector<uint256> vWorkQueue;
genesis               507         BOOST_FOREACH(const CTxIn& txin, vin)
genesis               508             vWorkQueue.push_back(txin.prevout.hash);
genesis               509 
genesis               510         // This critsect is OK because txdb is already open
genesis               511         CRITICAL_BLOCK(pwallet->cs_wallet)
genesis               512         {
genesis               513             map<uint256, const CMerkleTx*> mapWalletPrev;
genesis               514             set<uint256> setAlreadyDone;
genesis               515             for (int i = 0; i < vWorkQueue.size(); i++)
genesis               516             {
genesis               517                 uint256 hash = vWorkQueue[i];
genesis               518                 if (setAlreadyDone.count(hash))
genesis               519                     continue;
genesis               520                 setAlreadyDone.insert(hash);
genesis               521 
genesis               522                 CMerkleTx tx;
genesis               523                 map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(hash);
genesis               524                 if (mi != pwallet->mapWallet.end())
genesis               525                 {
genesis               526                     tx = (*mi).second;
genesis               527                     BOOST_FOREACH(const CMerkleTx& txWalletPrev, (*mi).second.vtxPrev)
genesis               528                         mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
genesis               529                 }
genesis               530                 else if (mapWalletPrev.count(hash))
genesis               531                 {
genesis               532                     tx = *mapWalletPrev[hash];
genesis               533                 }
genesis               534                 else if (!fClient && txdb.ReadDiskTx(hash, tx))
genesis               535                 {
genesis               536                     ;
genesis               537                 }
genesis               538                 else
genesis               539                 {
genesis               540                     printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
genesis               541                     continue;
genesis               542                 }
genesis               543 
genesis               544                 int nDepth = tx.SetMerkleBranch();
genesis               545                 vtxPrev.push_back(tx);
genesis               546 
genesis               547                 if (nDepth < COPY_DEPTH)
genesis               548                     BOOST_FOREACH(const CTxIn& txin, tx.vin)
genesis               549                         vWorkQueue.push_back(txin.prevout.hash);
genesis               550             }
genesis               551         }
genesis               552     }
genesis               553 
genesis               554     reverse(vtxPrev.begin(), vtxPrev.end());
genesis               555 }
genesis               556 
genesis               557 bool CWalletTx::WriteToDisk()
genesis               558 {
genesis               559     return CWalletDB(pwallet->strWalletFile).WriteTx(GetHash(), *this);
genesis               560 }
genesis               561 
genesis               562 // Scan the block chain (starting in pindexStart) for transactions
genesis               563 // from or to us. If fUpdate is true, found transactions that already
genesis               564 // exist in the wallet will be updated.
genesis               565 int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
genesis               566 {
genesis               567     int ret = 0;
genesis               568 
genesis               569     CBlockIndex* pindex = pindexStart;
genesis               570     CRITICAL_BLOCK(cs_wallet)
genesis               571     {
genesis               572         while (pindex)
genesis               573         {
genesis               574             CBlock block;
genesis               575             block.ReadFromDisk(pindex, true);
genesis               576             BOOST_FOREACH(CTransaction& tx, block.vtx)
genesis               577             {
genesis               578                 if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
genesis               579                     ret++;
genesis               580             }
genesis               581             pindex = pindex->pnext;
genesis               582         }
genesis               583     }
genesis               584     return ret;
genesis               585 }
genesis               586 
genesis               587 void CWallet::ReacceptWalletTransactions()
genesis               588 {
genesis               589     CTxDB txdb("r");
genesis               590     bool fRepeat = true;
genesis               591     while (fRepeat) CRITICAL_BLOCK(cs_wallet)
genesis               592     {
genesis               593         fRepeat = false;
genesis               594         vector<CDiskTxPos> vMissingTx;
genesis               595         BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
genesis               596         {
genesis               597             CWalletTx& wtx = item.second;
genesis               598             if (wtx.IsCoinBase() && wtx.IsSpent(0))
genesis               599                 continue;
genesis               600 
genesis               601             CTxIndex txindex;
genesis               602             bool fUpdated = false;
genesis               603             if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
genesis               604             {
genesis               605                 // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
genesis               606                 if (txindex.vSpent.size() != wtx.vout.size())
genesis               607                 {
genesis               608                     printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
genesis               609                     continue;
genesis               610                 }
genesis               611                 for (int i = 0; i < txindex.vSpent.size(); i++)
genesis               612                 {
genesis               613                     if (wtx.IsSpent(i))
genesis               614                         continue;
genesis               615                     if (!txindex.vSpent[i].IsNull() && IsMine(wtx.vout[i]))
genesis               616                     {
genesis               617                         wtx.MarkSpent(i);
genesis               618                         fUpdated = true;
genesis               619                         vMissingTx.push_back(txindex.vSpent[i]);
genesis               620                     }
genesis               621                 }
genesis               622                 if (fUpdated)
genesis               623                 {
genesis               624                     printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
genesis               625                     wtx.MarkDirty();
genesis               626                     wtx.WriteToDisk();
genesis               627                 }
genesis               628             }
genesis               629             else
genesis               630             {
genesis               631                 // Reaccept any txes of ours that aren't already in a block
genesis               632                 if (!wtx.IsCoinBase())
genesis               633                     wtx.AcceptWalletTransaction(txdb, false);
genesis               634             }
genesis               635         }
genesis               636         if (!vMissingTx.empty())
genesis               637         {
genesis               638             // TODO: optimize this to scan just part of the block chain?
genesis               639             if (ScanForWalletTransactions(pindexGenesisBlock))
genesis               640                 fRepeat = true;  // Found missing transactions: re-do Reaccept.
genesis               641         }
genesis               642     }
genesis               643 }
genesis               644 
genesis               645 void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
genesis               646 {
genesis               647     BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
genesis               648     {
genesis               649         if (!tx.IsCoinBase())
genesis               650         {
genesis               651             uint256 hash = tx.GetHash();
genesis               652             if (!txdb.ContainsTx(hash))
genesis               653                 RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
genesis               654         }
genesis               655     }
genesis               656     if (!IsCoinBase())
genesis               657     {
genesis               658         uint256 hash = GetHash();
genesis               659         if (!txdb.ContainsTx(hash))
genesis               660         {
genesis               661             printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
genesis               662             RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
genesis               663         }
genesis               664     }
genesis               665 }
genesis               666 
genesis               667 void CWalletTx::RelayWalletTransaction()
genesis               668 {
genesis               669    CTxDB txdb("r");
genesis               670    RelayWalletTransaction(txdb);
genesis               671 }
genesis               672 
genesis               673 void CWallet::ResendWalletTransactions()
genesis               674 {
genesis               675     // Do this infrequently and randomly to avoid giving away
genesis               676     // that these are our transactions.
genesis               677     static int64 nNextTime;
genesis               678     if (GetTime() < nNextTime)
genesis               679         return;
genesis               680     bool fFirst = (nNextTime == 0);
genesis               681     nNextTime = GetTime() + GetRand(30 * 60);
genesis               682     if (fFirst)
genesis               683         return;
genesis               684 
genesis               685     // Only do it if there's been a new block since last time
genesis               686     static int64 nLastTime;
genesis               687     if (nTimeBestReceived < nLastTime)
genesis               688         return;
genesis               689     nLastTime = GetTime();
genesis               690 
genesis               691     // Rebroadcast any of our txes that aren't in a block yet
genesis               692     printf("ResendWalletTransactions()\n");
genesis               693     CTxDB txdb("r");
genesis               694     CRITICAL_BLOCK(cs_wallet)
genesis               695     {
genesis               696         // Sort them in chronological order
genesis               697         multimap<unsigned int, CWalletTx*> mapSorted;
genesis               698         BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
genesis               699         {
genesis               700             CWalletTx& wtx = item.second;
genesis               701             // Don't rebroadcast until it's had plenty of time that
genesis               702             // it should have gotten in already by now.
genesis               703             if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
genesis               704                 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
genesis               705         }
genesis               706         BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
genesis               707         {
genesis               708             CWalletTx& wtx = *item.second;
genesis               709             wtx.RelayWalletTransaction(txdb);
genesis               710         }
genesis               711     }
genesis               712 }
genesis               713 
genesis               714 
genesis               715 
genesis               716 
genesis               717 
genesis               718 
genesis               719 //////////////////////////////////////////////////////////////////////////////
genesis               720 //
genesis               721 // Actions
genesis               722 //
genesis               723 
genesis               724 
genesis               725 int64 CWallet::GetBalance() const
genesis               726 {
genesis               727     int64 nTotal = 0;
genesis               728     CRITICAL_BLOCK(cs_wallet)
genesis               729     {
genesis               730         for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
genesis               731         {
genesis               732             const CWalletTx* pcoin = &(*it).second;
genesis               733             if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
genesis               734                 continue;
genesis               735             nTotal += pcoin->GetAvailableCredit();
genesis               736         }
genesis               737     }
genesis               738 
genesis               739     return nTotal;
genesis               740 }
genesis               741 
genesis               742 int64 CWallet::GetUnconfirmedBalance() const
genesis               743 {
genesis               744     int64 nTotal = 0;
genesis               745     CRITICAL_BLOCK(cs_wallet)
genesis               746     {
genesis               747         for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
genesis               748         {
genesis               749             const CWalletTx* pcoin = &(*it).second;
genesis               750             if (pcoin->IsFinal() && pcoin->IsConfirmed())
genesis               751                 continue;
genesis               752             nTotal += pcoin->GetAvailableCredit();
genesis               753         }
genesis               754     }
genesis               755     return nTotal;
genesis               756 }
genesis               757 
genesis               758 bool CWallet::SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
genesis               759 {
genesis               760     setCoinsRet.clear();
genesis               761     nValueRet = 0;
genesis               762 
genesis               763     // List of values less than target
genesis               764     pair<int64, pair<const CWalletTx*,unsigned int> > coinLowestLarger;
genesis               765     coinLowestLarger.first = INT64_MAX;
genesis               766     coinLowestLarger.second.first = NULL;
genesis               767     vector<pair<int64, pair<const CWalletTx*,unsigned int> > > vValue;
genesis               768     int64 nTotalLower = 0;
genesis               769 
genesis               770     CRITICAL_BLOCK(cs_wallet)
genesis               771     {
genesis               772        vector<const CWalletTx*> vCoins;
genesis               773        vCoins.reserve(mapWallet.size());
genesis               774        for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
genesis               775            vCoins.push_back(&(*it).second);
genesis               776        random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
genesis               777 
genesis               778        BOOST_FOREACH(const CWalletTx* pcoin, vCoins)
genesis               779        {
genesis               780             if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
genesis               781                 continue;
genesis               782 
genesis               783             if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
genesis               784                 continue;
genesis               785 
genesis               786             int nDepth = pcoin->GetDepthInMainChain();
genesis               787             if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
genesis               788                 continue;
genesis               789 
genesis               790             for (int i = 0; i < pcoin->vout.size(); i++)
genesis               791             {
genesis               792                 if (pcoin->IsSpent(i) || !IsMine(pcoin->vout[i]))
genesis               793                     continue;
genesis               794 
genesis               795                 int64 n = pcoin->vout[i].nValue;
genesis               796 
genesis               797                 if (n <= 0)
genesis               798                     continue;
genesis               799 
genesis               800                 pair<int64,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin,i));
genesis               801 
genesis               802                 if (n == nTargetValue)
genesis               803                 {
genesis               804                     setCoinsRet.insert(coin.second);
genesis               805                     nValueRet += coin.first;
genesis               806                     return true;
genesis               807                 }
genesis               808                 else if (n < nTargetValue + CENT)
genesis               809                 {
genesis               810                     vValue.push_back(coin);
genesis               811                     nTotalLower += n;
genesis               812                 }
genesis               813                 else if (n < coinLowestLarger.first)
genesis               814                 {
genesis               815                     coinLowestLarger = coin;
genesis               816                 }
genesis               817             }
genesis               818         }
genesis               819     }
genesis               820 
genesis               821     if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
genesis               822     {
genesis               823         for (int i = 0; i < vValue.size(); ++i)
genesis               824         {
genesis               825             setCoinsRet.insert(vValue[i].second);
genesis               826             nValueRet += vValue[i].first;
genesis               827         }
genesis               828         return true;
genesis               829     }
genesis               830 
genesis               831     if (nTotalLower < nTargetValue + (coinLowestLarger.second.first ? CENT : 0))
genesis               832     {
genesis               833         if (coinLowestLarger.second.first == NULL)
genesis               834             return false;
genesis               835         setCoinsRet.insert(coinLowestLarger.second);
genesis               836         nValueRet += coinLowestLarger.first;
genesis               837         return true;
genesis               838     }
genesis               839 
genesis               840     if (nTotalLower >= nTargetValue + CENT)
genesis               841         nTargetValue += CENT;
genesis               842 
genesis               843     // Solve subset sum by stochastic approximation
genesis               844     sort(vValue.rbegin(), vValue.rend());
genesis               845     vector<char> vfIncluded;
genesis               846     vector<char> vfBest(vValue.size(), true);
genesis               847     int64 nBest = nTotalLower;
genesis               848 
genesis               849     for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
genesis               850     {
genesis               851         vfIncluded.assign(vValue.size(), false);
genesis               852         int64 nTotal = 0;
genesis               853         bool fReachedTarget = false;
genesis               854         for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
genesis               855         {
genesis               856             for (int i = 0; i < vValue.size(); i++)
genesis               857             {
genesis               858                 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
genesis               859                 {
genesis               860                     nTotal += vValue[i].first;
genesis               861                     vfIncluded[i] = true;
genesis               862                     if (nTotal >= nTargetValue)
genesis               863                     {
genesis               864                         fReachedTarget = true;
genesis               865                         if (nTotal < nBest)
genesis               866                         {
genesis               867                             nBest = nTotal;
genesis               868                             vfBest = vfIncluded;
genesis               869                         }
genesis               870                         nTotal -= vValue[i].first;
genesis               871                         vfIncluded[i] = false;
genesis               872                     }
genesis               873                 }
genesis               874             }
genesis               875         }
genesis               876     }
genesis               877 
genesis               878     // If the next larger is still closer, return it
genesis               879     if (coinLowestLarger.second.first && coinLowestLarger.first - nTargetValue <= nBest - nTargetValue)
genesis               880     {
genesis               881         setCoinsRet.insert(coinLowestLarger.second);
genesis               882         nValueRet += coinLowestLarger.first;
genesis               883     }
genesis               884     else {
genesis               885         for (int i = 0; i < vValue.size(); i++)
genesis               886             if (vfBest[i])
genesis               887             {
genesis               888                 setCoinsRet.insert(vValue[i].second);
genesis               889                 nValueRet += vValue[i].first;
genesis               890             }
genesis               891 
genesis               892         //// debug print
genesis               893         printf("SelectCoins() best subset: ");
genesis               894         for (int i = 0; i < vValue.size(); i++)
genesis               895             if (vfBest[i])
genesis               896                 printf("%s ", FormatMoney(vValue[i].first).c_str());
genesis               897         printf("total %s\n", FormatMoney(nBest).c_str());
genesis               898     }
genesis               899 
genesis               900     return true;
genesis               901 }
genesis               902 
genesis               903 bool CWallet::SelectCoins(int64 nTargetValue, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
genesis               904 {
genesis               905     return (SelectCoinsMinConf(nTargetValue, 1, 6, setCoinsRet, nValueRet) ||
genesis               906             SelectCoinsMinConf(nTargetValue, 1, 1, setCoinsRet, nValueRet) ||
genesis               907             SelectCoinsMinConf(nTargetValue, 0, 1, setCoinsRet, nValueRet));
genesis               908 }
genesis               909 
genesis               910 
genesis               911 
genesis               912 
genesis               913 bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
genesis               914 {
genesis               915     int64 nValue = 0;
genesis               916     BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
genesis               917     {
genesis               918         if (nValue < 0)
genesis               919             return false;
genesis               920         nValue += s.second;
genesis               921     }
genesis               922     if (vecSend.empty() || nValue < 0)
genesis               923         return false;
genesis               924 
genesis               925     wtxNew.pwallet = this;
genesis               926 
genesis               927     CRITICAL_BLOCK(cs_main)
genesis               928     CRITICAL_BLOCK(cs_wallet)
genesis               929     {
genesis               930         // txdb must be opened before the mapWallet lock
genesis               931         CTxDB txdb("r");
genesis               932         {
genesis               933             nFeeRet = nTransactionFee;
genesis               934             loop
genesis               935             {
genesis               936                 wtxNew.vin.clear();
genesis               937                 wtxNew.vout.clear();
genesis               938                 wtxNew.fFromMe = true;
genesis               939 
genesis               940                 int64 nTotalValue = nValue + nFeeRet;
genesis               941                 double dPriority = 0;
genesis               942                 // vouts to the payees
genesis               943                 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
genesis               944                     wtxNew.vout.push_back(CTxOut(s.second, s.first));
genesis               945 
genesis               946                 // Choose coins to use
genesis               947                 set<pair<const CWalletTx*,unsigned int> > setCoins;
genesis               948                 int64 nValueIn = 0;
genesis               949                 if (!SelectCoins(nTotalValue, setCoins, nValueIn))
genesis               950                     return false;
genesis               951                 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
genesis               952                 {
genesis               953                     int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
genesis               954                     dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
genesis               955                 }
genesis               956 
genesis               957                 int64 nChange = nValueIn - nValue - nFeeRet;
genesis               958                 // if sub-cent change is required, the fee must be raised to at least MIN_TX_FEE
genesis               959                 // or until nChange becomes zero
genesis               960                 if (nFeeRet < MIN_TX_FEE && nChange > 0 && nChange < CENT)
genesis               961                 {
genesis               962                     int64 nMoveToFee = min(nChange, MIN_TX_FEE - nFeeRet);
genesis               963                     nChange -= nMoveToFee;
genesis               964                     nFeeRet += nMoveToFee;
genesis               965                 }
genesis               966 
genesis               967                 if (nChange > 0)
genesis               968                 {
genesis               969                     // Note: We use a new key here to keep it from being obvious which side is the change.
genesis               970                     //  The drawback is that by not reusing a previous key, the change may be lost if a
genesis               971                     //  backup is restored, if the backup doesn't have the new private key for the change.
genesis               972                     //  If we reused the old key, it would be possible to add code to look for and
genesis               973                     //  rediscover unknown transactions that were written with keys of ours to recover
genesis               974                     //  post-backup change.
genesis               975 
genesis               976                     // Reserve a new key pair from key pool
genesis               977                     vector<unsigned char> vchPubKey = reservekey.GetReservedKey();
genesis               978                     // assert(mapKeys.count(vchPubKey));
genesis               979 
genesis               980                     // Fill a vout to ourself, using same address type as the payment
genesis               981                     CScript scriptChange;
genesis               982                     if (vecSend[0].first.GetBitcoinAddress().IsValid())
genesis               983                         scriptChange.SetBitcoinAddress(vchPubKey);
genesis               984                     else
genesis               985                         scriptChange << vchPubKey << OP_CHECKSIG;
genesis               986 
genesis               987                     // Insert change txn at random position:
genesis               988                     vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
genesis               989                     wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
genesis               990                 }
genesis               991                 else
genesis               992                     reservekey.ReturnKey();
genesis               993 
genesis               994                 // Fill vin
genesis               995                 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
genesis               996                     wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
genesis               997 
genesis               998                 // Sign
genesis               999                 int nIn = 0;
genesis              1000                 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
genesis              1001                     if (!SignSignature(*this, *coin.first, wtxNew, nIn++))
genesis              1002                         return false;
genesis              1003 
genesis              1004                 // Limit size
genesis              1005                 unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK);
genesis              1006                 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
genesis              1007                     return false;
genesis              1008                 dPriority /= nBytes;
genesis              1009 
genesis              1010                 // Check that enough fee is included
genesis              1011                 int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
genesis              1012                 bool fAllowFree = CTransaction::AllowFree(dPriority);
genesis              1013                 int64 nMinFee = wtxNew.GetMinFee(1, fAllowFree);
genesis              1014                 if (nFeeRet < max(nPayFee, nMinFee))
genesis              1015                 {
genesis              1016                     nFeeRet = max(nPayFee, nMinFee);
genesis              1017                     continue;
genesis              1018                 }
genesis              1019 
genesis              1020                 // Fill vtxPrev by copying from previous transactions vtxPrev
genesis              1021                 wtxNew.AddSupportingTransactions(txdb);
genesis              1022                 wtxNew.fTimeReceivedIsTxTime = true;
genesis              1023 
genesis              1024                 break;
genesis              1025             }
genesis              1026         }
genesis              1027     }
genesis              1028     return true;
genesis              1029 }
genesis              1030 
genesis              1031 bool CWallet::CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
genesis              1032 {
genesis              1033     vector< pair<CScript, int64> > vecSend;
genesis              1034     vecSend.push_back(make_pair(scriptPubKey, nValue));
genesis              1035     return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
genesis              1036 }
genesis              1037 
genesis              1038 // Call after CreateTransaction unless you want to abort
genesis              1039 bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
genesis              1040 {
genesis              1041     CRITICAL_BLOCK(cs_main)
genesis              1042     CRITICAL_BLOCK(cs_wallet)
genesis              1043     {
genesis              1044         printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
genesis              1045         {
genesis              1046             // This is only to keep the database open to defeat the auto-flush for the
genesis              1047             // duration of this scope.  This is the only place where this optimization
genesis              1048             // maybe makes sense; please don't do it anywhere else.
genesis              1049             CWalletDB* pwalletdb = fFileBacked ? new CWalletDB(strWalletFile,"r") : NULL;
genesis              1050 
genesis              1051             // Take key pair from key pool so it won't be used again
genesis              1052             reservekey.KeepKey();
genesis              1053 
genesis              1054             // Add tx to wallet, because if it has change it's also ours,
genesis              1055             // otherwise just for transaction history.
genesis              1056             AddToWallet(wtxNew);
genesis              1057 
genesis              1058             // Mark old coins as spent
genesis              1059             set<CWalletTx*> setCoins;
genesis              1060             BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
genesis              1061             {
genesis              1062                 CWalletTx &coin = mapWallet[txin.prevout.hash];
genesis              1063                 coin.pwallet = this;
genesis              1064                 coin.MarkSpent(txin.prevout.n);
genesis              1065                 coin.WriteToDisk();
genesis              1066                 vWalletUpdated.push_back(coin.GetHash());
genesis              1067             }
genesis              1068 
genesis              1069             if (fFileBacked)
genesis              1070                 delete pwalletdb;
genesis              1071         }
genesis              1072 
genesis              1073         // Track how many getdata requests our transaction gets
genesis              1074         mapRequestCount[wtxNew.GetHash()] = 0;
genesis              1075 
genesis              1076         // Broadcast
genesis              1077         if (!wtxNew.AcceptToMemoryPool())
genesis              1078         {
genesis              1079             // This must not fail. The transaction has already been signed and recorded.
genesis              1080             printf("CommitTransaction() : Error: Transaction not valid");
genesis              1081             return false;
genesis              1082         }
genesis              1083         wtxNew.RelayWalletTransaction();
genesis              1084     }
genesis              1085     MainFrameRepaint();
genesis              1086     return true;
genesis              1087 }
genesis              1088 
genesis              1089 
genesis              1090 
genesis              1091 
genesis              1092 string CWallet::SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
genesis              1093 {
genesis              1094     CReserveKey reservekey(this);
genesis              1095     int64 nFeeRequired;
genesis              1096 
genesis              1097     if (IsLocked())
genesis              1098     {
genesis              1099         string strError = _("Error: Wallet locked, unable to create transaction  ");
genesis              1100         printf("SendMoney() : %s", strError.c_str());
genesis              1101         return strError;
genesis              1102     }
genesis              1103     if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
genesis              1104     {
genesis              1105         string strError;
genesis              1106         if (nValue + nFeeRequired > GetBalance())
genesis              1107             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());
genesis              1108         else
genesis              1109             strError = _("Error: Transaction creation failed  ");
genesis              1110         printf("SendMoney() : %s", strError.c_str());
genesis              1111         return strError;
genesis              1112     }
genesis              1113 
genesis              1114     if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
genesis              1115         return "ABORTED";
genesis              1116 
genesis              1117     if (!CommitTransaction(wtxNew, reservekey))
genesis              1118         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.");
genesis              1119 
genesis              1120     MainFrameRepaint();
genesis              1121     return "";
genesis              1122 }
genesis              1123 
genesis              1124 
genesis              1125 
genesis              1126 string CWallet::SendMoneyToBitcoinAddress(const CBitcoinAddress& address, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
genesis              1127 {
genesis              1128     // Check amount
genesis              1129     if (nValue <= 0)
genesis              1130         return _("Invalid amount");
genesis              1131     if (nValue + nTransactionFee > GetBalance())
genesis              1132         return _("Insufficient funds");
genesis              1133 
genesis              1134     // Parse bitcoin address
genesis              1135     CScript scriptPubKey;
genesis              1136     scriptPubKey.SetBitcoinAddress(address);
genesis              1137 
genesis              1138     return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
genesis              1139 }
genesis              1140 
genesis              1141 
genesis              1142 
genesis              1143 
genesis              1144 int CWallet::LoadWallet(bool& fFirstRunRet)
genesis              1145 {
genesis              1146     if (!fFileBacked)
genesis              1147         return false;
genesis              1148     fFirstRunRet = false;
genesis              1149     int nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this);
genesis              1150     if (nLoadWalletRet == DB_NEED_REWRITE)
genesis              1151     {
genesis              1152         if (CDB::Rewrite(strWalletFile, "\x04pool"))
genesis              1153         {
genesis              1154             setKeyPool.clear();
genesis              1155             // Note: can't top-up keypool here, because wallet is locked.
genesis              1156             // User will be prompted to unlock wallet the next operation
genesis              1157             // the requires a new key.
genesis              1158         }
genesis              1159         nLoadWalletRet = DB_NEED_REWRITE;
genesis              1160     }
genesis              1161 
genesis              1162     if (nLoadWalletRet != DB_LOAD_OK)
genesis              1163         return nLoadWalletRet;
genesis              1164     fFirstRunRet = vchDefaultKey.empty();
genesis              1165 
genesis              1166     if (!HaveKey(Hash160(vchDefaultKey)))
genesis              1167     {
genesis              1168         // Create new keyUser and set as default key
genesis              1169         RandAddSeedPerfmon();
genesis              1170 
genesis              1171         std::vector<unsigned char> newDefaultKey;
genesis              1172         if (!GetKeyFromPool(newDefaultKey, false))
genesis              1173             return DB_LOAD_FAIL;
genesis              1174         SetDefaultKey(newDefaultKey);
genesis              1175         if (!SetAddressBookName(CBitcoinAddress(vchDefaultKey), ""))
genesis              1176             return DB_LOAD_FAIL;
genesis              1177     }
genesis              1178 
genesis              1179     CreateThread(ThreadFlushWalletDB, &strWalletFile);
genesis              1180     return DB_LOAD_OK;
genesis              1181 }
genesis              1182 
genesis              1183 
genesis              1184 bool CWallet::SetAddressBookName(const CBitcoinAddress& address, const string& strName)
genesis              1185 {
genesis              1186     mapAddressBook[address] = strName;
genesis              1187     if (!fFileBacked)
genesis              1188         return false;
genesis              1189     return CWalletDB(strWalletFile).WriteName(address.ToString(), strName);
genesis              1190 }
genesis              1191 
genesis              1192 bool CWallet::DelAddressBookName(const CBitcoinAddress& address)
genesis              1193 {
genesis              1194     mapAddressBook.erase(address);
genesis              1195     if (!fFileBacked)
genesis              1196         return false;
genesis              1197     return CWalletDB(strWalletFile).EraseName(address.ToString());
genesis              1198 }
genesis              1199 
genesis              1200 
genesis              1201 void CWallet::PrintWallet(const CBlock& block)
genesis              1202 {
genesis              1203     CRITICAL_BLOCK(cs_wallet)
genesis              1204     {
genesis              1205         if (mapWallet.count(block.vtx[0].GetHash()))
genesis              1206         {
genesis              1207             CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
genesis              1208             printf("    mine:  %d  %d  %d", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
genesis              1209         }
genesis              1210     }
genesis              1211     printf("\n");
genesis              1212 }
genesis              1213 
genesis              1214 bool CWallet::GetTransaction(const uint256 &hashTx, CWalletTx& wtx)
genesis              1215 {
genesis              1216     CRITICAL_BLOCK(cs_wallet)
genesis              1217     {
genesis              1218         map<uint256, CWalletTx>::iterator mi = mapWallet.find(hashTx);
genesis              1219         if (mi != mapWallet.end())
genesis              1220         {
genesis              1221             wtx = (*mi).second;
genesis              1222             return true;
genesis              1223         }
genesis              1224     }
genesis              1225     return false;
genesis              1226 }
genesis              1227 
genesis              1228 bool CWallet::SetDefaultKey(const std::vector<unsigned char> &vchPubKey)
genesis              1229 {
genesis              1230     if (fFileBacked)
genesis              1231     {
genesis              1232         if (!CWalletDB(strWalletFile).WriteDefaultKey(vchPubKey))
genesis              1233             return false;
genesis              1234     }
genesis              1235     vchDefaultKey = vchPubKey;
genesis              1236     return true;
genesis              1237 }
genesis              1238 
genesis              1239 bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut)
genesis              1240 {
genesis              1241     if (!pwallet->fFileBacked)
genesis              1242         return false;
genesis              1243     strWalletFileOut = pwallet->strWalletFile;
genesis              1244     return true;
genesis              1245 }
genesis              1246 
genesis              1247 //
genesis              1248 // Mark old keypool keys as used,
genesis              1249 // and generate all new keys
genesis              1250 //
genesis              1251 bool CWallet::NewKeyPool()
genesis              1252 {
genesis              1253     CRITICAL_BLOCK(cs_wallet)
genesis              1254     {
genesis              1255         CWalletDB walletdb(strWalletFile);
genesis              1256         BOOST_FOREACH(int64 nIndex, setKeyPool)
genesis              1257             walletdb.ErasePool(nIndex);
genesis              1258         setKeyPool.clear();
genesis              1259 
genesis              1260         if (IsLocked())
genesis              1261             return false;
genesis              1262 
genesis              1263         int64 nKeys = max(GetArg("-keypool", 100), (int64)0);
genesis              1264         for (int i = 0; i < nKeys; i++)
genesis              1265         {
genesis              1266             int64 nIndex = i+1;
genesis              1267             walletdb.WritePool(nIndex, CKeyPool(GenerateNewKey()));
genesis              1268             setKeyPool.insert(nIndex);
genesis              1269         }
genesis              1270         printf("CWallet::NewKeyPool wrote %"PRI64d" new keys\n", nKeys);
genesis              1271     }
genesis              1272     return true;
genesis              1273 }
genesis              1274 
genesis              1275 bool CWallet::TopUpKeyPool()
genesis              1276 {
genesis              1277     CRITICAL_BLOCK(cs_wallet)
genesis              1278     {
genesis              1279         if (IsLocked())
genesis              1280             return false;
genesis              1281 
genesis              1282         CWalletDB walletdb(strWalletFile);
genesis              1283 
genesis              1284         // Top up key pool
genesis              1285         int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
genesis              1286         while (setKeyPool.size() < nTargetSize+1)
genesis              1287         {
genesis              1288             int64 nEnd = 1;
genesis              1289             if (!setKeyPool.empty())
genesis              1290                 nEnd = *(--setKeyPool.end()) + 1;
genesis              1291             if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
genesis              1292                 throw runtime_error("TopUpKeyPool() : writing generated key failed");
genesis              1293             setKeyPool.insert(nEnd);
genesis              1294             printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size());
genesis              1295         }
genesis              1296     }
genesis              1297     return true;
genesis              1298 }
genesis              1299 
genesis              1300 void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
genesis              1301 {
genesis              1302     nIndex = -1;
genesis              1303     keypool.vchPubKey.clear();
genesis              1304     CRITICAL_BLOCK(cs_wallet)
genesis              1305     {
genesis              1306         if (!IsLocked())
genesis              1307             TopUpKeyPool();
genesis              1308 
genesis              1309         // Get the oldest key
genesis              1310         if(setKeyPool.empty())
genesis              1311             return;
genesis              1312 
genesis              1313         CWalletDB walletdb(strWalletFile);
genesis              1314 
genesis              1315         nIndex = *(setKeyPool.begin());
genesis              1316         setKeyPool.erase(setKeyPool.begin());
genesis              1317         if (!walletdb.ReadPool(nIndex, keypool))
genesis              1318             throw runtime_error("ReserveKeyFromKeyPool() : read failed");
genesis              1319         if (!HaveKey(Hash160(keypool.vchPubKey)))
genesis              1320             throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
genesis              1321         assert(!keypool.vchPubKey.empty());
genesis              1322         printf("keypool reserve %"PRI64d"\n", nIndex);
genesis              1323     }
genesis              1324 }
genesis              1325 
genesis              1326 void CWallet::KeepKey(int64 nIndex)
genesis              1327 {
genesis              1328     // Remove from key pool
genesis              1329     if (fFileBacked)
genesis              1330     {
genesis              1331         CWalletDB walletdb(strWalletFile);
genesis              1332         walletdb.ErasePool(nIndex);
genesis              1333     }
genesis              1334     printf("keypool keep %"PRI64d"\n", nIndex);
genesis              1335 }
genesis              1336 
genesis              1337 void CWallet::ReturnKey(int64 nIndex)
genesis              1338 {
genesis              1339     // Return to key pool
genesis              1340     CRITICAL_BLOCK(cs_wallet)
genesis              1341         setKeyPool.insert(nIndex);
genesis              1342     printf("keypool return %"PRI64d"\n", nIndex);
genesis              1343 }
genesis              1344 
genesis              1345 bool CWallet::GetKeyFromPool(vector<unsigned char>& result, bool fAllowReuse)
genesis              1346 {
genesis              1347     int64 nIndex = 0;
genesis              1348     CKeyPool keypool;
genesis              1349     CRITICAL_BLOCK(cs_wallet)
genesis              1350     {
genesis              1351         ReserveKeyFromKeyPool(nIndex, keypool);
genesis              1352         if (nIndex == -1)
genesis              1353         {
genesis              1354             if (fAllowReuse && !vchDefaultKey.empty())
genesis              1355             {
genesis              1356                 result = vchDefaultKey;
genesis              1357                 return true;
genesis              1358             }
genesis              1359             if (IsLocked()) return false;
genesis              1360             result = GenerateNewKey();
genesis              1361             return true;
genesis              1362         }
genesis              1363         KeepKey(nIndex);
genesis              1364         result = keypool.vchPubKey;
genesis              1365     }
genesis              1366     return true;
genesis              1367 }
genesis              1368 
genesis              1369 int64 CWallet::GetOldestKeyPoolTime()
genesis              1370 {
genesis              1371     int64 nIndex = 0;
genesis              1372     CKeyPool keypool;
genesis              1373     ReserveKeyFromKeyPool(nIndex, keypool);
genesis              1374     if (nIndex == -1)
genesis              1375         return GetTime();
genesis              1376     ReturnKey(nIndex);
genesis              1377     return keypool.nTime;
genesis              1378 }
genesis              1379 
genesis              1380 vector<unsigned char> CReserveKey::GetReservedKey()
genesis              1381 {
genesis              1382     if (nIndex == -1)
genesis              1383     {
genesis              1384         CKeyPool keypool;
genesis              1385         pwallet->ReserveKeyFromKeyPool(nIndex, keypool);
genesis              1386         if (nIndex != -1)
genesis              1387             vchPubKey = keypool.vchPubKey;
genesis              1388         else
genesis              1389         {
genesis              1390             printf("CReserveKey::GetReservedKey(): Warning: using default key instead of a new key, top up your keypool.");
genesis              1391             vchPubKey = pwallet->vchDefaultKey;
genesis              1392         }
genesis              1393     }
genesis              1394     assert(!vchPubKey.empty());
genesis              1395     return vchPubKey;
genesis              1396 }
genesis              1397 
genesis              1398 void CReserveKey::KeepKey()
genesis              1399 {
genesis              1400     if (nIndex != -1)
genesis              1401         pwallet->KeepKey(nIndex);
genesis              1402     nIndex = -1;
genesis              1403     vchPubKey.clear();
genesis              1404 }
genesis              1405 
genesis              1406 void CReserveKey::ReturnKey()
genesis              1407 {
genesis              1408     if (nIndex != -1)
genesis              1409         pwallet->ReturnKey(nIndex);
genesis              1410     nIndex = -1;
genesis              1411     vchPubKey.clear();
genesis              1412 }
genesis              1413