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 
polarbeard_better...   95                 printf(SINF SWAL "passphrase changed through %i deriving iterations\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 
polarbeard_better...  154     printf(SINF SWAL "encrypting using %i deriving iterations\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                 {
polarbeard_better...  217                     printf(SWAR SWAL "found spent %s bitcoin on tx %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
polarbeard_better...  264         printf(SINF SWAL "adding input from tx %s. (%s)\n", wtxIn.GetHash().ToString().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         {
polarbeard_better...  443             printf(SWAR SWAL "unknown transaction type found, tx %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                 {
polarbeard_better...  540                     printf(SERR SWAL "unsupported tx\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                 {
polarbeard_better...  608                     printf(SERR SWAL "tx index spent count differs from output index length\n");
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                 {
polarbeard_better...  624                     printf(SERR SWAL "found spent %s bitcoin on tx %s\n",
polarbeard_better...  625                        FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
genesis               626                     wtx.MarkDirty();
genesis               627                     wtx.WriteToDisk();
genesis               628                 }
genesis               629             }
genesis               630             else
genesis               631             {
genesis               632                 // Reaccept any txes of ours that aren't already in a block
genesis               633                 if (!wtx.IsCoinBase())
genesis               634                     wtx.AcceptWalletTransaction(txdb, false);
genesis               635             }
genesis               636         }
genesis               637         if (!vMissingTx.empty())
genesis               638         {
genesis               639             // TODO: optimize this to scan just part of the block chain?
genesis               640             if (ScanForWalletTransactions(pindexGenesisBlock))
genesis               641                 fRepeat = true;  // Found missing transactions: re-do Reaccept.
genesis               642         }
genesis               643     }
genesis               644 }
genesis               645 
genesis               646 void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
genesis               647 {
genesis               648     BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
genesis               649     {
genesis               650         if (!tx.IsCoinBase())
genesis               651         {
genesis               652             uint256 hash = tx.GetHash();
genesis               653             if (!txdb.ContainsTx(hash))
genesis               654                 RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
genesis               655         }
genesis               656     }
genesis               657     if (!IsCoinBase())
genesis               658     {
genesis               659         uint256 hash = GetHash();
genesis               660         if (!txdb.ContainsTx(hash))
genesis               661         {
polarbeard_better...  662             printf(SINF SWAL "relaying wallet tx %s\n", hash.ToString().c_str());
genesis               663             RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
genesis               664         }
genesis               665     }
genesis               666 }
genesis               667 
genesis               668 void CWalletTx::RelayWalletTransaction()
genesis               669 {
genesis               670    CTxDB txdb("r");
genesis               671    RelayWalletTransaction(txdb);
genesis               672 }
genesis               673 
genesis               674 void CWallet::ResendWalletTransactions()
genesis               675 {
genesis               676     // Do this infrequently and randomly to avoid giving away
genesis               677     // that these are our transactions.
genesis               678     static int64 nNextTime;
genesis               679     if (GetTime() < nNextTime)
genesis               680         return;
genesis               681     bool fFirst = (nNextTime == 0);
genesis               682     nNextTime = GetTime() + GetRand(30 * 60);
genesis               683     if (fFirst)
genesis               684         return;
genesis               685 
genesis               686     // Only do it if there's been a new block since last time
genesis               687     static int64 nLastTime;
genesis               688     if (nTimeBestReceived < nLastTime)
genesis               689         return;
genesis               690     nLastTime = GetTime();
genesis               691 
genesis               692     // Rebroadcast any of our txes that aren't in a block yet
polarbeard_better...  693     printf(SWAR SWAL "resending wallet txs\n");
genesis               694     CTxDB txdb("r");
genesis               695     CRITICAL_BLOCK(cs_wallet)
genesis               696     {
genesis               697         // Sort them in chronological order
genesis               698         multimap<unsigned int, CWalletTx*> mapSorted;
genesis               699         BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
genesis               700         {
genesis               701             CWalletTx& wtx = item.second;
genesis               702             // Don't rebroadcast until it's had plenty of time that
genesis               703             // it should have gotten in already by now.
genesis               704             if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
genesis               705                 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
genesis               706         }
genesis               707         BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
genesis               708         {
genesis               709             CWalletTx& wtx = *item.second;
genesis               710             wtx.RelayWalletTransaction(txdb);
genesis               711         }
genesis               712     }
genesis               713 }
genesis               714 
genesis               715 
genesis               716 
genesis               717 
genesis               718 
genesis               719 
genesis               720 //////////////////////////////////////////////////////////////////////////////
genesis               721 //
genesis               722 // Actions
genesis               723 //
genesis               724 
genesis               725 
genesis               726 int64 CWallet::GetBalance() const
genesis               727 {
genesis               728     int64 nTotal = 0;
genesis               729     CRITICAL_BLOCK(cs_wallet)
genesis               730     {
genesis               731         for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
genesis               732         {
genesis               733             const CWalletTx* pcoin = &(*it).second;
genesis               734             if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
genesis               735                 continue;
genesis               736             nTotal += pcoin->GetAvailableCredit();
genesis               737         }
genesis               738     }
genesis               739 
genesis               740     return nTotal;
genesis               741 }
genesis               742 
genesis               743 int64 CWallet::GetUnconfirmedBalance() const
genesis               744 {
genesis               745     int64 nTotal = 0;
genesis               746     CRITICAL_BLOCK(cs_wallet)
genesis               747     {
genesis               748         for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
genesis               749         {
genesis               750             const CWalletTx* pcoin = &(*it).second;
genesis               751             if (pcoin->IsFinal() && pcoin->IsConfirmed())
genesis               752                 continue;
genesis               753             nTotal += pcoin->GetAvailableCredit();
genesis               754         }
genesis               755     }
genesis               756     return nTotal;
genesis               757 }
genesis               758 
genesis               759 bool CWallet::SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
genesis               760 {
genesis               761     setCoinsRet.clear();
genesis               762     nValueRet = 0;
genesis               763 
genesis               764     // List of values less than target
genesis               765     pair<int64, pair<const CWalletTx*,unsigned int> > coinLowestLarger;
genesis               766     coinLowestLarger.first = INT64_MAX;
genesis               767     coinLowestLarger.second.first = NULL;
genesis               768     vector<pair<int64, pair<const CWalletTx*,unsigned int> > > vValue;
genesis               769     int64 nTotalLower = 0;
genesis               770 
genesis               771     CRITICAL_BLOCK(cs_wallet)
genesis               772     {
genesis               773        vector<const CWalletTx*> vCoins;
genesis               774        vCoins.reserve(mapWallet.size());
genesis               775        for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
genesis               776            vCoins.push_back(&(*it).second);
genesis               777        random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
genesis               778 
genesis               779        BOOST_FOREACH(const CWalletTx* pcoin, vCoins)
genesis               780        {
genesis               781             if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
genesis               782                 continue;
genesis               783 
genesis               784             if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
genesis               785                 continue;
genesis               786 
genesis               787             int nDepth = pcoin->GetDepthInMainChain();
genesis               788             if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
genesis               789                 continue;
genesis               790 
genesis               791             for (int i = 0; i < pcoin->vout.size(); i++)
genesis               792             {
genesis               793                 if (pcoin->IsSpent(i) || !IsMine(pcoin->vout[i]))
genesis               794                     continue;
genesis               795 
genesis               796                 int64 n = pcoin->vout[i].nValue;
genesis               797 
genesis               798                 if (n <= 0)
genesis               799                     continue;
genesis               800 
genesis               801                 pair<int64,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin,i));
genesis               802 
genesis               803                 if (n == nTargetValue)
genesis               804                 {
genesis               805                     setCoinsRet.insert(coin.second);
genesis               806                     nValueRet += coin.first;
genesis               807                     return true;
genesis               808                 }
genesis               809                 else if (n < nTargetValue + CENT)
genesis               810                 {
genesis               811                     vValue.push_back(coin);
genesis               812                     nTotalLower += n;
genesis               813                 }
genesis               814                 else if (n < coinLowestLarger.first)
genesis               815                 {
genesis               816                     coinLowestLarger = coin;
genesis               817                 }
genesis               818             }
genesis               819         }
genesis               820     }
genesis               821 
genesis               822     if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
genesis               823     {
genesis               824         for (int i = 0; i < vValue.size(); ++i)
genesis               825         {
genesis               826             setCoinsRet.insert(vValue[i].second);
genesis               827             nValueRet += vValue[i].first;
genesis               828         }
genesis               829         return true;
genesis               830     }
genesis               831 
genesis               832     if (nTotalLower < nTargetValue + (coinLowestLarger.second.first ? CENT : 0))
genesis               833     {
genesis               834         if (coinLowestLarger.second.first == NULL)
genesis               835             return false;
genesis               836         setCoinsRet.insert(coinLowestLarger.second);
genesis               837         nValueRet += coinLowestLarger.first;
genesis               838         return true;
genesis               839     }
genesis               840 
genesis               841     if (nTotalLower >= nTargetValue + CENT)
genesis               842         nTargetValue += CENT;
genesis               843 
genesis               844     // Solve subset sum by stochastic approximation
genesis               845     sort(vValue.rbegin(), vValue.rend());
genesis               846     vector<char> vfIncluded;
genesis               847     vector<char> vfBest(vValue.size(), true);
genesis               848     int64 nBest = nTotalLower;
genesis               849 
genesis               850     for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
genesis               851     {
genesis               852         vfIncluded.assign(vValue.size(), false);
genesis               853         int64 nTotal = 0;
genesis               854         bool fReachedTarget = false;
genesis               855         for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
genesis               856         {
genesis               857             for (int i = 0; i < vValue.size(); i++)
genesis               858             {
genesis               859                 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
genesis               860                 {
genesis               861                     nTotal += vValue[i].first;
genesis               862                     vfIncluded[i] = true;
genesis               863                     if (nTotal >= nTargetValue)
genesis               864                     {
genesis               865                         fReachedTarget = true;
genesis               866                         if (nTotal < nBest)
genesis               867                         {
genesis               868                             nBest = nTotal;
genesis               869                             vfBest = vfIncluded;
genesis               870                         }
genesis               871                         nTotal -= vValue[i].first;
genesis               872                         vfIncluded[i] = false;
genesis               873                     }
genesis               874                 }
genesis               875             }
genesis               876         }
genesis               877     }
genesis               878 
genesis               879     // If the next larger is still closer, return it
genesis               880     if (coinLowestLarger.second.first && coinLowestLarger.first - nTargetValue <= nBest - nTargetValue)
genesis               881     {
genesis               882         setCoinsRet.insert(coinLowestLarger.second);
genesis               883         nValueRet += coinLowestLarger.first;
genesis               884     }
genesis               885     else {
genesis               886         for (int i = 0; i < vValue.size(); i++)
genesis               887             if (vfBest[i])
genesis               888             {
genesis               889                 setCoinsRet.insert(vValue[i].second);
genesis               890                 nValueRet += vValue[i].first;
genesis               891             }
genesis               892 
genesis               893         //// debug print
polarbeard_better...  894         std::string str;
genesis               895         for (int i = 0; i < vValue.size(); i++)
genesis               896             if (vfBest[i])
polarbeard_better...  897                 str += FormatMoney(vValue[i].first) + (i == vValue.size() - 1 ? "" : " ");
polarbeard_better...  898         printf(SINF SWAL "selecting best output subset: %s\n", str.c_str());
genesis               899     }
genesis               900 
genesis               901     return true;
genesis               902 }
genesis               903 
genesis               904 bool CWallet::SelectCoins(int64 nTargetValue, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
genesis               905 {
genesis               906     return (SelectCoinsMinConf(nTargetValue, 1, 6, setCoinsRet, nValueRet) ||
genesis               907             SelectCoinsMinConf(nTargetValue, 1, 1, setCoinsRet, nValueRet) ||
genesis               908             SelectCoinsMinConf(nTargetValue, 0, 1, setCoinsRet, nValueRet));
genesis               909 }
genesis               910 
genesis               911 
genesis               912 
genesis               913 
genesis               914 bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
genesis               915 {
genesis               916     int64 nValue = 0;
genesis               917     BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
genesis               918     {
genesis               919         if (nValue < 0)
genesis               920             return false;
genesis               921         nValue += s.second;
genesis               922     }
genesis               923     if (vecSend.empty() || nValue < 0)
genesis               924         return false;
genesis               925 
genesis               926     wtxNew.pwallet = this;
genesis               927 
genesis               928     CRITICAL_BLOCK(cs_main)
genesis               929     CRITICAL_BLOCK(cs_wallet)
genesis               930     {
genesis               931         // txdb must be opened before the mapWallet lock
genesis               932         CTxDB txdb("r");
genesis               933         {
genesis               934             nFeeRet = nTransactionFee;
genesis               935             loop
genesis               936             {
genesis               937                 wtxNew.vin.clear();
genesis               938                 wtxNew.vout.clear();
genesis               939                 wtxNew.fFromMe = true;
genesis               940 
genesis               941                 int64 nTotalValue = nValue + nFeeRet;
genesis               942                 double dPriority = 0;
genesis               943                 // vouts to the payees
genesis               944                 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
genesis               945                     wtxNew.vout.push_back(CTxOut(s.second, s.first));
genesis               946 
genesis               947                 // Choose coins to use
genesis               948                 set<pair<const CWalletTx*,unsigned int> > setCoins;
genesis               949                 int64 nValueIn = 0;
genesis               950                 if (!SelectCoins(nTotalValue, setCoins, nValueIn))
genesis               951                     return false;
genesis               952                 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
genesis               953                 {
genesis               954                     int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
genesis               955                     dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
genesis               956                 }
genesis               957 
genesis               958                 int64 nChange = nValueIn - nValue - nFeeRet;
genesis               959                 // if sub-cent change is required, the fee must be raised to at least MIN_TX_FEE
genesis               960                 // or until nChange becomes zero
genesis               961                 if (nFeeRet < MIN_TX_FEE && nChange > 0 && nChange < CENT)
genesis               962                 {
genesis               963                     int64 nMoveToFee = min(nChange, MIN_TX_FEE - nFeeRet);
genesis               964                     nChange -= nMoveToFee;
genesis               965                     nFeeRet += nMoveToFee;
genesis               966                 }
genesis               967 
genesis               968                 if (nChange > 0)
genesis               969                 {
genesis               970                     // Note: We use a new key here to keep it from being obvious which side is the change.
genesis               971                     //  The drawback is that by not reusing a previous key, the change may be lost if a
genesis               972                     //  backup is restored, if the backup doesn't have the new private key for the change.
genesis               973                     //  If we reused the old key, it would be possible to add code to look for and
genesis               974                     //  rediscover unknown transactions that were written with keys of ours to recover
genesis               975                     //  post-backup change.
genesis               976 
genesis               977                     // Reserve a new key pair from key pool
genesis               978                     vector<unsigned char> vchPubKey = reservekey.GetReservedKey();
genesis               979                     // assert(mapKeys.count(vchPubKey));
genesis               980 
genesis               981                     // Fill a vout to ourself, using same address type as the payment
genesis               982                     CScript scriptChange;
genesis               983                     if (vecSend[0].first.GetBitcoinAddress().IsValid())
genesis               984                         scriptChange.SetBitcoinAddress(vchPubKey);
genesis               985                     else
genesis               986                         scriptChange << vchPubKey << OP_CHECKSIG;
genesis               987 
genesis               988                     // Insert change txn at random position:
genesis               989                     vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
genesis               990                     wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
genesis               991                 }
genesis               992                 else
genesis               993                     reservekey.ReturnKey();
genesis               994 
genesis               995                 // Fill vin
genesis               996                 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
genesis               997                     wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
genesis               998 
genesis               999                 // Sign
genesis              1000                 int nIn = 0;
genesis              1001                 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
genesis              1002                     if (!SignSignature(*this, *coin.first, wtxNew, nIn++))
genesis              1003                         return false;
genesis              1004 
genesis              1005                 // Limit size
genesis              1006                 unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK);
genesis              1007                 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
genesis              1008                     return false;
genesis              1009                 dPriority /= nBytes;
genesis              1010 
genesis              1011                 // Check that enough fee is included
genesis              1012                 int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
genesis              1013                 bool fAllowFree = CTransaction::AllowFree(dPriority);
genesis              1014                 int64 nMinFee = wtxNew.GetMinFee(1, fAllowFree);
genesis              1015                 if (nFeeRet < max(nPayFee, nMinFee))
genesis              1016                 {
genesis              1017                     nFeeRet = max(nPayFee, nMinFee);
genesis              1018                     continue;
genesis              1019                 }
genesis              1020 
genesis              1021                 // Fill vtxPrev by copying from previous transactions vtxPrev
genesis              1022                 wtxNew.AddSupportingTransactions(txdb);
genesis              1023                 wtxNew.fTimeReceivedIsTxTime = true;
genesis              1024 
genesis              1025                 break;
genesis              1026             }
genesis              1027         }
genesis              1028     }
genesis              1029     return true;
genesis              1030 }
genesis              1031 
genesis              1032 bool CWallet::CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
genesis              1033 {
genesis              1034     vector< pair<CScript, int64> > vecSend;
genesis              1035     vecSend.push_back(make_pair(scriptPubKey, nValue));
genesis              1036     return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
genesis              1037 }
genesis              1038 
genesis              1039 // Call after CreateTransaction unless you want to abort
genesis              1040 bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
genesis              1041 {
genesis              1042     CRITICAL_BLOCK(cs_main)
genesis              1043     CRITICAL_BLOCK(cs_wallet)
genesis              1044     {
polarbeard_better... 1045         printf(SINF SWAL "commit tx %s\n", wtxNew.ToString().c_str());
genesis              1046         {
genesis              1047             // This is only to keep the database open to defeat the auto-flush for the
genesis              1048             // duration of this scope.  This is the only place where this optimization
genesis              1049             // maybe makes sense; please don't do it anywhere else.
genesis              1050             CWalletDB* pwalletdb = fFileBacked ? new CWalletDB(strWalletFile,"r") : NULL;
genesis              1051 
genesis              1052             // Take key pair from key pool so it won't be used again
genesis              1053             reservekey.KeepKey();
genesis              1054 
genesis              1055             // Add tx to wallet, because if it has change it's also ours,
genesis              1056             // otherwise just for transaction history.
genesis              1057             AddToWallet(wtxNew);
genesis              1058 
genesis              1059             // Mark old coins as spent
genesis              1060             set<CWalletTx*> setCoins;
genesis              1061             BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
genesis              1062             {
genesis              1063                 CWalletTx &coin = mapWallet[txin.prevout.hash];
genesis              1064                 coin.pwallet = this;
genesis              1065                 coin.MarkSpent(txin.prevout.n);
genesis              1066                 coin.WriteToDisk();
genesis              1067                 vWalletUpdated.push_back(coin.GetHash());
genesis              1068             }
genesis              1069 
genesis              1070             if (fFileBacked)
genesis              1071                 delete pwalletdb;
genesis              1072         }
genesis              1073 
genesis              1074         // Track how many getdata requests our transaction gets
genesis              1075         mapRequestCount[wtxNew.GetHash()] = 0;
genesis              1076 
genesis              1077         // Broadcast
genesis              1078         if (!wtxNew.AcceptToMemoryPool())
genesis              1079         {
genesis              1080             // This must not fail. The transaction has already been signed and recorded.
polarbeard_better... 1081             printf(SERR SWAL "tx found non-valid while commiting");
genesis              1082             return false;
genesis              1083         }
genesis              1084         wtxNew.RelayWalletTransaction();
genesis              1085     }
genesis              1086     MainFrameRepaint();
genesis              1087     return true;
genesis              1088 }
genesis              1089 
genesis              1090 
genesis              1091 
genesis              1092 
genesis              1093 string CWallet::SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
genesis              1094 {
genesis              1095     CReserveKey reservekey(this);
genesis              1096     int64 nFeeRequired;
genesis              1097 
genesis              1098     if (IsLocked())
genesis              1099     {
genesis              1100         string strError = _("Error: Wallet locked, unable to create transaction  ");
polarbeard_better... 1101         printf(SERR SWAL "send money failed with error %s\n", strError.c_str());
genesis              1102         return strError;
genesis              1103     }
genesis              1104     if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
genesis              1105     {
genesis              1106         string strError;
genesis              1107         if (nValue + nFeeRequired > GetBalance())
polarbeard_better... 1108             strError += strprintf("tx requires a tx fee of at"
polarbeard_better... 1109                " least %s because of its amount, complexity, or use of recently"
polarbeard_better... 1110                " received funds", FormatMoney(nFeeRequired).c_str());
genesis              1111         else
polarbeard_better... 1112             strError += strprintf("tx creation failed");
polarbeard_better... 1113         printf(SERR SWAL "send money failed with error: %s", strError.c_str());
genesis              1114         return strError;
genesis              1115     }
genesis              1116 
genesis              1117     if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
genesis              1118         return "ABORTED";
genesis              1119 
genesis              1120     if (!CommitTransaction(wtxNew, reservekey))
genesis              1121         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              1122 
genesis              1123     MainFrameRepaint();
genesis              1124     return "";
genesis              1125 }
genesis              1126 
genesis              1127 
genesis              1128 
genesis              1129 string CWallet::SendMoneyToBitcoinAddress(const CBitcoinAddress& address, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
genesis              1130 {
genesis              1131     // Check amount
genesis              1132     if (nValue <= 0)
genesis              1133         return _("Invalid amount");
genesis              1134     if (nValue + nTransactionFee > GetBalance())
genesis              1135         return _("Insufficient funds");
genesis              1136 
genesis              1137     // Parse bitcoin address
genesis              1138     CScript scriptPubKey;
genesis              1139     scriptPubKey.SetBitcoinAddress(address);
genesis              1140 
genesis              1141     return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
genesis              1142 }
genesis              1143 
genesis              1144 
genesis              1145 
genesis              1146 
genesis              1147 int CWallet::LoadWallet(bool& fFirstRunRet)
genesis              1148 {
genesis              1149     if (!fFileBacked)
genesis              1150         return false;
genesis              1151     fFirstRunRet = false;
genesis              1152     int nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this);
genesis              1153     if (nLoadWalletRet == DB_NEED_REWRITE)
genesis              1154     {
genesis              1155         if (CDB::Rewrite(strWalletFile, "\x04pool"))
genesis              1156         {
genesis              1157             setKeyPool.clear();
genesis              1158             // Note: can't top-up keypool here, because wallet is locked.
genesis              1159             // User will be prompted to unlock wallet the next operation
genesis              1160             // the requires a new key.
genesis              1161         }
genesis              1162         nLoadWalletRet = DB_NEED_REWRITE;
genesis              1163     }
genesis              1164 
genesis              1165     if (nLoadWalletRet != DB_LOAD_OK)
genesis              1166         return nLoadWalletRet;
genesis              1167     fFirstRunRet = vchDefaultKey.empty();
genesis              1168 
genesis              1169     if (!HaveKey(Hash160(vchDefaultKey)))
genesis              1170     {
genesis              1171         // Create new keyUser and set as default key
genesis              1172         RandAddSeedPerfmon();
genesis              1173 
genesis              1174         std::vector<unsigned char> newDefaultKey;
genesis              1175         if (!GetKeyFromPool(newDefaultKey, false))
genesis              1176             return DB_LOAD_FAIL;
genesis              1177         SetDefaultKey(newDefaultKey);
genesis              1178         if (!SetAddressBookName(CBitcoinAddress(vchDefaultKey), ""))
genesis              1179             return DB_LOAD_FAIL;
genesis              1180     }
genesis              1181 
genesis              1182     CreateThread(ThreadFlushWalletDB, &strWalletFile);
genesis              1183     return DB_LOAD_OK;
genesis              1184 }
genesis              1185 
genesis              1186 
genesis              1187 bool CWallet::SetAddressBookName(const CBitcoinAddress& address, const string& strName)
genesis              1188 {
genesis              1189     mapAddressBook[address] = strName;
genesis              1190     if (!fFileBacked)
genesis              1191         return false;
genesis              1192     return CWalletDB(strWalletFile).WriteName(address.ToString(), strName);
genesis              1193 }
genesis              1194 
genesis              1195 bool CWallet::DelAddressBookName(const CBitcoinAddress& address)
genesis              1196 {
genesis              1197     mapAddressBook.erase(address);
genesis              1198     if (!fFileBacked)
genesis              1199         return false;
genesis              1200     return CWalletDB(strWalletFile).EraseName(address.ToString());
genesis              1201 }
genesis              1202 
genesis              1203 
genesis              1204 void CWallet::PrintWallet(const CBlock& block)
genesis              1205 {
genesis              1206     CRITICAL_BLOCK(cs_wallet)
genesis              1207     {
genesis              1208         if (mapWallet.count(block.vtx[0].GetHash()))
genesis              1209         {
genesis              1210             CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
polarbeard_better... 1211             printf(SINF SWAL "depth is %d, blocks to maturity is %d and credit is %d\n",
polarbeard_better... 1212                wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
genesis              1213         }
genesis              1214     }
genesis              1215 }
genesis              1216 
genesis              1217 bool CWallet::GetTransaction(const uint256 &hashTx, CWalletTx& wtx)
genesis              1218 {
genesis              1219     CRITICAL_BLOCK(cs_wallet)
genesis              1220     {
genesis              1221         map<uint256, CWalletTx>::iterator mi = mapWallet.find(hashTx);
genesis              1222         if (mi != mapWallet.end())
genesis              1223         {
genesis              1224             wtx = (*mi).second;
genesis              1225             return true;
genesis              1226         }
genesis              1227     }
genesis              1228     return false;
genesis              1229 }
genesis              1230 
genesis              1231 bool CWallet::SetDefaultKey(const std::vector<unsigned char> &vchPubKey)
genesis              1232 {
genesis              1233     if (fFileBacked)
genesis              1234     {
genesis              1235         if (!CWalletDB(strWalletFile).WriteDefaultKey(vchPubKey))
genesis              1236             return false;
genesis              1237     }
genesis              1238     vchDefaultKey = vchPubKey;
genesis              1239     return true;
genesis              1240 }
genesis              1241 
genesis              1242 bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut)
genesis              1243 {
genesis              1244     if (!pwallet->fFileBacked)
genesis              1245         return false;
genesis              1246     strWalletFileOut = pwallet->strWalletFile;
genesis              1247     return true;
genesis              1248 }
genesis              1249 
genesis              1250 //
genesis              1251 // Mark old keypool keys as used,
genesis              1252 // and generate all new keys
genesis              1253 //
genesis              1254 bool CWallet::NewKeyPool()
genesis              1255 {
genesis              1256     CRITICAL_BLOCK(cs_wallet)
genesis              1257     {
genesis              1258         CWalletDB walletdb(strWalletFile);
genesis              1259         BOOST_FOREACH(int64 nIndex, setKeyPool)
genesis              1260             walletdb.ErasePool(nIndex);
genesis              1261         setKeyPool.clear();
genesis              1262 
genesis              1263         if (IsLocked())
genesis              1264             return false;
genesis              1265 
genesis              1266         int64 nKeys = max(GetArg("-keypool", 100), (int64)0);
genesis              1267         for (int i = 0; i < nKeys; i++)
genesis              1268         {
genesis              1269             int64 nIndex = i+1;
genesis              1270             walletdb.WritePool(nIndex, CKeyPool(GenerateNewKey()));
genesis              1271             setKeyPool.insert(nIndex);
genesis              1272         }
polarbeard_better... 1273         printf(SINF SWAL "%"PRI64d" new keys written\n", nKeys);
genesis              1274     }
genesis              1275     return true;
genesis              1276 }
genesis              1277 
genesis              1278 bool CWallet::TopUpKeyPool()
genesis              1279 {
genesis              1280     CRITICAL_BLOCK(cs_wallet)
genesis              1281     {
genesis              1282         if (IsLocked())
genesis              1283             return false;
genesis              1284 
genesis              1285         CWalletDB walletdb(strWalletFile);
genesis              1286 
genesis              1287         // Top up key pool
genesis              1288         int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
genesis              1289         while (setKeyPool.size() < nTargetSize+1)
genesis              1290         {
genesis              1291             int64 nEnd = 1;
genesis              1292             if (!setKeyPool.empty())
genesis              1293                 nEnd = *(--setKeyPool.end()) + 1;
genesis              1294             if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
genesis              1295                 throw runtime_error("TopUpKeyPool() : writing generated key failed");
genesis              1296             setKeyPool.insert(nEnd);
polarbeard_better... 1297             printf(SINF SWAL "added key %"PRI64d", current size is %d\n", nEnd, setKeyPool.size());
genesis              1298         }
genesis              1299     }
genesis              1300     return true;
genesis              1301 }
genesis              1302 
genesis              1303 void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
genesis              1304 {
genesis              1305     nIndex = -1;
genesis              1306     keypool.vchPubKey.clear();
genesis              1307     CRITICAL_BLOCK(cs_wallet)
genesis              1308     {
genesis              1309         if (!IsLocked())
genesis              1310             TopUpKeyPool();
genesis              1311 
genesis              1312         // Get the oldest key
genesis              1313         if(setKeyPool.empty())
genesis              1314             return;
genesis              1315 
genesis              1316         CWalletDB walletdb(strWalletFile);
genesis              1317 
genesis              1318         nIndex = *(setKeyPool.begin());
genesis              1319         setKeyPool.erase(setKeyPool.begin());
genesis              1320         if (!walletdb.ReadPool(nIndex, keypool))
genesis              1321             throw runtime_error("ReserveKeyFromKeyPool() : read failed");
genesis              1322         if (!HaveKey(Hash160(keypool.vchPubKey)))
genesis              1323             throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
genesis              1324         assert(!keypool.vchPubKey.empty());
polarbeard_better... 1325         printf(SINF SWAL "keypool reserve %"PRI64d"\n", nIndex);
genesis              1326     }
genesis              1327 }
genesis              1328 
genesis              1329 void CWallet::KeepKey(int64 nIndex)
genesis              1330 {
genesis              1331     // Remove from key pool
genesis              1332     if (fFileBacked)
genesis              1333     {
genesis              1334         CWalletDB walletdb(strWalletFile);
genesis              1335         walletdb.ErasePool(nIndex);
genesis              1336     }
polarbeard_better... 1337     printf(SINF SWAL "keypool keep %"PRI64d"\n", nIndex);
genesis              1338 }
genesis              1339 
genesis              1340 void CWallet::ReturnKey(int64 nIndex)
genesis              1341 {
genesis              1342     // Return to key pool
genesis              1343     CRITICAL_BLOCK(cs_wallet)
genesis              1344         setKeyPool.insert(nIndex);
polarbeard_better... 1345     printf(SINF SWAL "keypool return %"PRI64d"\n", nIndex);
genesis              1346 }
genesis              1347 
genesis              1348 bool CWallet::GetKeyFromPool(vector<unsigned char>& result, bool fAllowReuse)
genesis              1349 {
genesis              1350     int64 nIndex = 0;
genesis              1351     CKeyPool keypool;
genesis              1352     CRITICAL_BLOCK(cs_wallet)
genesis              1353     {
genesis              1354         ReserveKeyFromKeyPool(nIndex, keypool);
genesis              1355         if (nIndex == -1)
genesis              1356         {
genesis              1357             if (fAllowReuse && !vchDefaultKey.empty())
genesis              1358             {
genesis              1359                 result = vchDefaultKey;
genesis              1360                 return true;
genesis              1361             }
genesis              1362             if (IsLocked()) return false;
genesis              1363             result = GenerateNewKey();
genesis              1364             return true;
genesis              1365         }
genesis              1366         KeepKey(nIndex);
genesis              1367         result = keypool.vchPubKey;
genesis              1368     }
genesis              1369     return true;
genesis              1370 }
genesis              1371 
genesis              1372 int64 CWallet::GetOldestKeyPoolTime()
genesis              1373 {
genesis              1374     int64 nIndex = 0;
genesis              1375     CKeyPool keypool;
genesis              1376     ReserveKeyFromKeyPool(nIndex, keypool);
genesis              1377     if (nIndex == -1)
genesis              1378         return GetTime();
genesis              1379     ReturnKey(nIndex);
genesis              1380     return keypool.nTime;
genesis              1381 }
genesis              1382 
genesis              1383 vector<unsigned char> CReserveKey::GetReservedKey()
genesis              1384 {
genesis              1385     if (nIndex == -1)
genesis              1386     {
genesis              1387         CKeyPool keypool;
genesis              1388         pwallet->ReserveKeyFromKeyPool(nIndex, keypool);
genesis              1389         if (nIndex != -1)
genesis              1390             vchPubKey = keypool.vchPubKey;
genesis              1391         else
genesis              1392         {
polarbeard_better... 1393             printf(SWAR SWAL "using default key instead of a new key, top up your keypool\n");
genesis              1394             vchPubKey = pwallet->vchDefaultKey;
genesis              1395         }
genesis              1396     }
genesis              1397     assert(!vchPubKey.empty());
genesis              1398     return vchPubKey;
genesis              1399 }
genesis              1400 
genesis              1401 void CReserveKey::KeepKey()
genesis              1402 {
genesis              1403     if (nIndex != -1)
genesis              1404         pwallet->KeepKey(nIndex);
genesis              1405     nIndex = -1;
genesis              1406     vchPubKey.clear();
genesis              1407 }
genesis              1408 
genesis              1409 void CReserveKey::ReturnKey()
genesis              1410 {
genesis              1411     if (nIndex != -1)
genesis              1412         pwallet->ReturnKey(nIndex);
genesis              1413     nIndex = -1;
genesis              1414     vchPubKey.clear();
genesis              1415 }
genesis              1416