db.cpp

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Distributed under the MIT/X11 software license, see the accompanying
   3 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include "headers.h"
   6
   7 void ThreadFlushWalletDB(void* parg);
   8
   9
  10 unsigned int nWalletDBUpdated;
  11 uint64 nAccountingEntryNumber = 0;
  12
  13
  14
  15 //
  16 // CDB
  17 //
  18
  19 static CCriticalSection cs_db;
  20 static bool fDbEnvInit = false;
  21 DbEnv dbenv(0);
  22 static map<string, int> mapFileUseCount;
  23 static map<string, Db*> mapDb;
  24
  25 class CDBInit
  26 {
  27 public:
  28     CDBInit()
  29     {
  30     }
  31     ~CDBInit()
  32     {
  33         if (fDbEnvInit)
  34         {
  35             dbenv.close(0);
  36             fDbEnvInit = false;
  37         }
  38     }
  39 }
  40 instance_of_cdbinit;
  41
  42
  43 CDB::CDB(const char* pszFile, const char* pszMode) : pdb(NULL)
  44 {
  45     int ret;
  46     if (pszFile == NULL)
  47         return;
  48
  49     fReadOnly = (!strchr(pszMode, '+') && !strchr(pszMode, 'w'));
  50     bool fCreate = strchr(pszMode, 'c');
  51     unsigned int nFlags = DB_THREAD;
  52     if (fCreate)
  53         nFlags |= DB_CREATE;
  54
  55     CRITICAL_BLOCK(cs_db)
  56     {
  57         if (!fDbEnvInit)
  58         {
  59             if (fShutdown)
  60                 return;
  61             string strDataDir = GetDataDir();
  62             string strLogDir = strDataDir + "/database";
  63             filesystem::create_directory(strLogDir.c_str());
  64             string strErrorFile = strDataDir + "/db.log";
  65             printf("dbenv.open strLogDir=%s strErrorFile=%s\n", strLogDir.c_str(), strErrorFile.c_str());
  66
  67             dbenv.set_lg_dir(strLogDir.c_str());
  68             dbenv.set_lg_max(10000000);
  69             dbenv.set_lk_max_locks(10000);
  70             dbenv.set_lk_max_objects(10000);
  71             dbenv.set_errfile(fopen(strErrorFile.c_str(), "a")); /// debug
  72             dbenv.set_flags(DB_AUTO_COMMIT, 1);
  73             ret = dbenv.open(strDataDir.c_str(),
  74                              DB_CREATE     |
  75                              DB_INIT_LOCK  |
  76                              DB_INIT_LOG   |
  77                              DB_INIT_MPOOL |
  78                              DB_INIT_TXN   |
  79                              DB_THREAD     |
  80                              DB_RECOVER,
  81                              S_IRUSR | S_IWUSR);
  82             if (ret > 0)
  83                 throw runtime_error(strprintf("CDB() : error %d opening database environment", ret));
  84             fDbEnvInit = true;
  85         }
  86
  87         strFile = pszFile;
  88         ++mapFileUseCount[strFile];
  89         pdb = mapDb[strFile];
  90         if (pdb == NULL)
  91         {
  92             pdb = new Db(&dbenv, 0);
  93
  94             ret = pdb->open(NULL,      // Txn pointer
  95                             pszFile,   // Filename
  96                             "main",    // Logical db name
  97                             DB_BTREE,  // Database type
  98                             nFlags,    // Flags
  99                             0);
 100
 101             if (ret > 0)
 102             {
 103                 delete pdb;
 104                 pdb = NULL;
 105                 CRITICAL_BLOCK(cs_db)
 106                     --mapFileUseCount[strFile];
 107                 strFile = "";
 108                 throw runtime_error(strprintf("CDB() : can't open database file %s, error %d", pszFile, ret));
 109             }
 110
 111             if (fCreate && !Exists(string("version")))
 112             {
 113                 bool fTmp = fReadOnly;
 114                 fReadOnly = false;
 115                 WriteVersion(VERSION);
 116                 fReadOnly = fTmp;
 117             }
 118
 119             mapDb[strFile] = pdb;
 120         }
 121     }
 122 }
 123
 124 void CDB::Close()
 125 {
 126     if (!pdb)
 127         return;
 128     if (!vTxn.empty())
 129         vTxn.front()->abort();
 130     vTxn.clear();
 131     pdb = NULL;
 132
 133     // Flush database activity from memory pool to disk log
 134     unsigned int nMinutes = 0;
 135     if (fReadOnly)
 136         nMinutes = 1;
 137     if (strFile == "addr.dat")
 138         nMinutes = 2;
 139     if (strFile == "blkindex.dat" && IsInitialBlockDownload() && nBestHeight % 500 != 0)
 140         nMinutes = 1;
 141     dbenv.txn_checkpoint(0, nMinutes, 0);
 142
 143     CRITICAL_BLOCK(cs_db)
 144         --mapFileUseCount[strFile];
 145 }
 146
 147 void CloseDb(const string& strFile)
 148 {
 149     CRITICAL_BLOCK(cs_db)
 150     {
 151         if (mapDb[strFile] != NULL)
 152         {
 153             // Close the database handle
 154             Db* pdb = mapDb[strFile];
 155             pdb->close(0);
 156             delete pdb;
 157             mapDb[strFile] = NULL;
 158         }
 159     }
 160 }
 161
 162 void DBFlush(bool fShutdown)
 163 {
 164     // Flush log data to the actual data file
 165     //  on all files that are not in use
 166     printf("DBFlush(%s)%s\n", fShutdown ? "true" : "false", fDbEnvInit ? "" : " db not started");
 167     if (!fDbEnvInit)
 168         return;
 169     CRITICAL_BLOCK(cs_db)
 170     {
 171         map<string, int>::iterator mi = mapFileUseCount.begin();
 172         while (mi != mapFileUseCount.end())
 173         {
 174             string strFile = (*mi).first;
 175             int nRefCount = (*mi).second;
 176             printf("%s refcount=%d\n", strFile.c_str(), nRefCount);
 177             if (nRefCount == 0)
 178             {
 179                 // Move log data to the dat file
 180                 CloseDb(strFile);
 181                 dbenv.txn_checkpoint(0, 0, 0);
 182                 printf("%s flush\n", strFile.c_str());
 183                 dbenv.lsn_reset(strFile.c_str(), 0);
 184                 mapFileUseCount.erase(mi++);
 185             }
 186             else
 187                 mi++;
 188         }
 189         if (fShutdown)
 190         {
 191             char** listp;
 192             if (mapFileUseCount.empty())
 193                 dbenv.log_archive(&listp, DB_ARCH_REMOVE);
 194             dbenv.close(0);
 195             fDbEnvInit = false;
 196         }
 197     }
 198 }
 199
 200
 201
 202
 203
 204
 205 //
 206 // CTxDB
 207 //
 208
 209 bool CTxDB::ReadTxIndex(uint256 hash, CTxIndex& txindex)
 210 {
 211     assert(!fClient);
 212     txindex.SetNull();
 213     return Read(make_pair(string("tx"), hash), txindex);
 214 }
 215
 216 bool CTxDB::UpdateTxIndex(uint256 hash, const CTxIndex& txindex)
 217 {
 218     assert(!fClient);
 219     return Write(make_pair(string("tx"), hash), txindex);
 220 }
 221
 222 bool CTxDB::AddTxIndex(const CTransaction& tx, const CDiskTxPos& pos, int nHeight)
 223 {
 224     assert(!fClient);
 225
 226     // Add to tx index
 227     uint256 hash = tx.GetHash();
 228     CTxIndex txindex(pos, tx.vout.size());
 229     return Write(make_pair(string("tx"), hash), txindex);
 230 }
 231
 232 bool CTxDB::EraseTxIndex(const CTransaction& tx)
 233 {
 234     assert(!fClient);
 235     uint256 hash = tx.GetHash();
 236
 237     return Erase(make_pair(string("tx"), hash));
 238 }
 239
 240 bool CTxDB::ContainsTx(uint256 hash)
 241 {
 242     assert(!fClient);
 243     return Exists(make_pair(string("tx"), hash));
 244 }
 245
 246 bool CTxDB::ReadOwnerTxes(uint160 hash160, int nMinHeight, vector<CTransaction>& vtx)
 247 {
 248     assert(!fClient);
 249     vtx.clear();
 250
 251     // Get cursor
 252     Dbc* pcursor = GetCursor();
 253     if (!pcursor)
 254         return false;
 255
 256     unsigned int fFlags = DB_SET_RANGE;
 257     loop
 258     {
 259         // Read next record
 260         CDataStream ssKey;
 261         if (fFlags == DB_SET_RANGE)
 262             ssKey << string("owner") << hash160 << CDiskTxPos(0, 0, 0);
 263         CDataStream ssValue;
 264         int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
 265         fFlags = DB_NEXT;
 266         if (ret == DB_NOTFOUND)
 267             break;
 268         else if (ret != 0)
 269         {
 270             pcursor->close();
 271             return false;
 272         }
 273
 274         // Unserialize
 275         string strType;
 276         uint160 hashItem;
 277         CDiskTxPos pos;
 278         ssKey >> strType >> hashItem >> pos;
 279         int nItemHeight;
 280         ssValue >> nItemHeight;
 281
 282         // Read transaction
 283         if (strType != "owner" || hashItem != hash160)
 284             break;
 285         if (nItemHeight >= nMinHeight)
 286         {
 287             vtx.resize(vtx.size()+1);
 288             if (!vtx.back().ReadFromDisk(pos))
 289             {
 290                 pcursor->close();
 291                 return false;
 292             }
 293         }
 294     }
 295
 296     pcursor->close();
 297     return true;
 298 }
 299
 300 bool CTxDB::ReadDiskTx(uint256 hash, CTransaction& tx, CTxIndex& txindex)
 301 {
 302     assert(!fClient);
 303     tx.SetNull();
 304     if (!ReadTxIndex(hash, txindex))
 305         return false;
 306     return (tx.ReadFromDisk(txindex.pos));
 307 }
 308
 309 bool CTxDB::ReadDiskTx(uint256 hash, CTransaction& tx)
 310 {
 311     CTxIndex txindex;
 312     return ReadDiskTx(hash, tx, txindex);
 313 }
 314
 315 bool CTxDB::ReadDiskTx(COutPoint outpoint, CTransaction& tx, CTxIndex& txindex)
 316 {
 317     return ReadDiskTx(outpoint.hash, tx, txindex);
 318 }
 319
 320 bool CTxDB::ReadDiskTx(COutPoint outpoint, CTransaction& tx)
 321 {
 322     CTxIndex txindex;
 323     return ReadDiskTx(outpoint.hash, tx, txindex);
 324 }
 325
 326 bool CTxDB::WriteBlockIndex(const CDiskBlockIndex& blockindex)
 327 {
 328     return Write(make_pair(string("blockindex"), blockindex.GetBlockHash()), blockindex);
 329 }
 330
 331 bool CTxDB::EraseBlockIndex(uint256 hash)
 332 {
 333     return Erase(make_pair(string("blockindex"), hash));
 334 }
 335
 336 bool CTxDB::ReadHashBestChain(uint256& hashBestChain)
 337 {
 338     return Read(string("hashBestChain"), hashBestChain);
 339 }
 340
 341 bool CTxDB::WriteHashBestChain(uint256 hashBestChain)
 342 {
 343     return Write(string("hashBestChain"), hashBestChain);
 344 }
 345
 346 bool CTxDB::ReadBestInvalidWork(CBigNum& bnBestInvalidWork)
 347 {
 348     return Read(string("bnBestInvalidWork"), bnBestInvalidWork);
 349 }
 350
 351 bool CTxDB::WriteBestInvalidWork(CBigNum bnBestInvalidWork)
 352 {
 353     return Write(string("bnBestInvalidWork"), bnBestInvalidWork);
 354 }
 355
 356 CBlockIndex* InsertBlockIndex(uint256 hash)
 357 {
 358     if (hash == 0)
 359         return NULL;
 360
 361     // Return existing
 362     map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
 363     if (mi != mapBlockIndex.end())
 364         return (*mi).second;
 365
 366     // Create new
 367     CBlockIndex* pindexNew = new CBlockIndex();
 368     if (!pindexNew)
 369         throw runtime_error("LoadBlockIndex() : new CBlockIndex failed");
 370     mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
 371     pindexNew->phashBlock = &((*mi).first);
 372
 373     return pindexNew;
 374 }
 375
 376 bool CTxDB::LoadBlockIndex()
 377 {
 378     // Get database cursor
 379     Dbc* pcursor = GetCursor();
 380     if (!pcursor)
 381         return false;
 382
 383     // Load mapBlockIndex
 384     unsigned int fFlags = DB_SET_RANGE;
 385     loop
 386     {
 387         // Read next record
 388         CDataStream ssKey;
 389         if (fFlags == DB_SET_RANGE)
 390             ssKey << make_pair(string("blockindex"), uint256(0));
 391         CDataStream ssValue;
 392         int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
 393         fFlags = DB_NEXT;
 394         if (ret == DB_NOTFOUND)
 395             break;
 396         else if (ret != 0)
 397             return false;
 398
 399         // Unserialize
 400         string strType;
 401         ssKey >> strType;
 402         if (strType == "blockindex")
 403         {
 404             CDiskBlockIndex diskindex;
 405             ssValue >> diskindex;
 406
 407             // Construct block index object
 408             CBlockIndex* pindexNew = InsertBlockIndex(diskindex.GetBlockHash());
 409             pindexNew->pprev          = InsertBlockIndex(diskindex.hashPrev);
 410             pindexNew->pnext          = InsertBlockIndex(diskindex.hashNext);
 411             pindexNew->nFile          = diskindex.nFile;
 412             pindexNew->nBlockPos      = diskindex.nBlockPos;
 413             pindexNew->nHeight        = diskindex.nHeight;
 414             pindexNew->nVersion       = diskindex.nVersion;
 415             pindexNew->hashMerkleRoot = diskindex.hashMerkleRoot;
 416             pindexNew->nTime          = diskindex.nTime;
 417             pindexNew->nBits          = diskindex.nBits;
 418             pindexNew->nNonce         = diskindex.nNonce;
 419
 420             // Watch for genesis block
 421             if (pindexGenesisBlock == NULL && diskindex.GetBlockHash() == hashGenesisBlock)
 422                 pindexGenesisBlock = pindexNew;
 423
 424             if (!pindexNew->CheckIndex())
 425                 return error("LoadBlockIndex() : CheckIndex failed at %d", pindexNew->nHeight);
 426         }
 427         else
 428         {
 429             break;
 430         }
 431     }
 432     pcursor->close();
 433
 434     // Calculate bnChainWork
 435     vector<pair<int, CBlockIndex*> > vSortedByHeight;
 436     vSortedByHeight.reserve(mapBlockIndex.size());
 437     foreach(const PAIRTYPE(uint256, CBlockIndex*)& item, mapBlockIndex)
 438     {
 439         CBlockIndex* pindex = item.second;
 440         vSortedByHeight.push_back(make_pair(pindex->nHeight, pindex));
 441     }
 442     sort(vSortedByHeight.begin(), vSortedByHeight.end());
 443     foreach(const PAIRTYPE(int, CBlockIndex*)& item, vSortedByHeight)
 444     {
 445         CBlockIndex* pindex = item.second;
 446         pindex->bnChainWork = (pindex->pprev ? pindex->pprev->bnChainWork : 0) + pindex->GetBlockWork();
 447     }
 448
 449     // Load hashBestChain pointer to end of best chain
 450     if (!ReadHashBestChain(hashBestChain))
 451     {
 452         if (pindexGenesisBlock == NULL)
 453             return true;
 454         return error("CTxDB::LoadBlockIndex() : hashBestChain not loaded");
 455     }
 456     if (!mapBlockIndex.count(hashBestChain))
 457         return error("CTxDB::LoadBlockIndex() : hashBestChain not found in the block index");
 458     pindexBest = mapBlockIndex[hashBestChain];
 459     nBestHeight = pindexBest->nHeight;
 460     bnBestChainWork = pindexBest->bnChainWork;
 461     printf("LoadBlockIndex(): hashBestChain=%s  height=%d\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight);
 462
 463     // Load bnBestInvalidWork, OK if it doesn't exist
 464     ReadBestInvalidWork(bnBestInvalidWork);
 465
 466     // Verify blocks in the best chain
 467     CBlockIndex* pindexFork = NULL;
 468     for (CBlockIndex* pindex = pindexBest; pindex && pindex->pprev; pindex = pindex->pprev)
 469     {
 470         if (pindex->nHeight < nBestHeight-2500 && !mapArgs.count("-checkblocks"))
 471             break;
 472         CBlock block;
 473         if (!block.ReadFromDisk(pindex))
 474             return error("LoadBlockIndex() : block.ReadFromDisk failed");
 475         if (!block.CheckBlock())
 476         {
 477             printf("LoadBlockIndex() : *** found bad block at %d, hash=%s\n", pindex->nHeight, pindex->GetBlockHash().ToString().c_str());
 478             pindexFork = pindex->pprev;
 479         }
 480     }
 481     if (pindexFork)
 482     {
 483         // Reorg back to the fork
 484         printf("LoadBlockIndex() : *** moving best chain pointer back to block %d\n", pindexFork->nHeight);
 485         CBlock block;
 486         if (!block.ReadFromDisk(pindexFork))
 487             return error("LoadBlockIndex() : block.ReadFromDisk failed");
 488         CTxDB txdb;
 489         block.SetBestChain(txdb, pindexFork);
 490     }
 491
 492     return true;
 493 }
 494
 495
 496
 497
 498
 499 //
 500 // CAddrDB
 501 //
 502
 503 bool CAddrDB::WriteAddress(const CAddress& addr)
 504 {
 505     return Write(make_pair(string("addr"), addr.GetKey()), addr);
 506 }
 507
 508 bool CAddrDB::EraseAddress(const CAddress& addr)
 509 {
 510     return Erase(make_pair(string("addr"), addr.GetKey()));
 511 }
 512
 513 bool CAddrDB::LoadAddresses()
 514 {
 515     CRITICAL_BLOCK(cs_mapAddresses)
 516     {
 517         // Load user provided addresses
 518         CAutoFile filein = fopen((GetDataDir() + "/addr.txt").c_str(), "rt");
 519         if (filein)
 520         {
 521             try
 522             {
 523                 char psz[1000];
 524                 while (fgets(psz, sizeof(psz), filein))
 525                 {
 526                     CAddress addr(psz, NODE_NETWORK);
 527                     addr.nTime = 0; // so it won't relay unless successfully connected
 528                     if (addr.IsValid())
 529                         AddAddress(addr);
 530                 }
 531             }
 532             catch (...) { }
 533         }
 534
 535         // Get cursor
 536         Dbc* pcursor = GetCursor();
 537         if (!pcursor)
 538             return false;
 539
 540         loop
 541         {
 542             // Read next record
 543             CDataStream ssKey;
 544             CDataStream ssValue;
 545             int ret = ReadAtCursor(pcursor, ssKey, ssValue);
 546             if (ret == DB_NOTFOUND)
 547                 break;
 548             else if (ret != 0)
 549                 return false;
 550
 551             // Unserialize
 552             string strType;
 553             ssKey >> strType;
 554             if (strType == "addr")
 555             {
 556                 CAddress addr;
 557                 ssValue >> addr;
 558                 mapAddresses.insert(make_pair(addr.GetKey(), addr));
 559             }
 560         }
 561         pcursor->close();
 562
 563         printf("Loaded %d addresses\n", mapAddresses.size());
 564     }
 565
 566     return true;
 567 }
 568
 569 bool LoadAddresses()
 570 {
 571     return CAddrDB("cr+").LoadAddresses();
 572 }
 573
 574
 575
 576
 577 //
 578 // CWalletDB
 579 //
 580
 581 static set<int64> setKeyPool;
 582 static CCriticalSection cs_setKeyPool;
 583
 584 bool CWalletDB::ReadAccount(const string& strAccount, CAccount& account)
 585 {
 586     account.SetNull();
 587     return Read(make_pair(string("acc"), strAccount), account);
 588 }
 589
 590 bool CWalletDB::WriteAccount(const string& strAccount, const CAccount& account)
 591 {
 592     return Write(make_pair(string("acc"), strAccount), account);
 593 }
 594
 595 bool CWalletDB::WriteAccountingEntry(const CAccountingEntry& acentry)
 596 {
 597     return Write(make_tuple(string("acentry"), acentry.strAccount, ++nAccountingEntryNumber), acentry);
 598 }
 599
 600 int64 CWalletDB::GetAccountCreditDebit(const string& strAccount)
 601 {
 602     list<CAccountingEntry> entries;
 603     ListAccountCreditDebit(strAccount, entries);
 604
 605     int64 nCreditDebit = 0;
 606     foreach (const CAccountingEntry& entry, entries)
 607         nCreditDebit += entry.nCreditDebit;
 608
 609     return nCreditDebit;
 610 }
 611
 612 void CWalletDB::ListAccountCreditDebit(const string& strAccount, list<CAccountingEntry>& entries)
 613 {
 614     int64 nCreditDebit = 0;
 615
 616     bool fAllAccounts = (strAccount == "*");
 617
 618     Dbc* pcursor = GetCursor();
 619     if (!pcursor)
 620         throw runtime_error("CWalletDB::ListAccountCreditDebit() : cannot create DB cursor");
 621     unsigned int fFlags = DB_SET_RANGE;
 622     loop
 623     {
 624         // Read next record
 625         CDataStream ssKey;
 626         if (fFlags == DB_SET_RANGE)
 627             ssKey << make_tuple(string("acentry"), (fAllAccounts? string("") : strAccount), uint64(0));
 628         CDataStream ssValue;
 629         int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
 630         fFlags = DB_NEXT;
 631         if (ret == DB_NOTFOUND)
 632             break;
 633         else if (ret != 0)
 634         {
 635             pcursor->close();
 636             throw runtime_error("CWalletDB::ListAccountCreditDebit() : error scanning DB");
 637         }
 638
 639         // Unserialize
 640         string strType;
 641         ssKey >> strType;
 642         if (strType != "acentry")
 643             break;
 644         CAccountingEntry acentry;
 645         ssKey >> acentry.strAccount;
 646         if (!fAllAccounts && acentry.strAccount != strAccount)
 647             break;
 648
 649         ssValue >> acentry;
 650         entries.push_back(acentry);
 651     }
 652
 653     pcursor->close();
 654 }
 655
 656
 657 bool CWalletDB::LoadWallet()
 658 {
 659     vchDefaultKey.clear();
 660     int nFileVersion = 0;
 661     vector<uint256> vWalletUpgrade;
 662
 663     // Modify defaults
 664 #ifndef __WXMSW__
 665     // Tray icon sometimes disappears on 9.10 karmic koala 64-bit, leaving no way to access the program
 666     fMinimizeToTray = false;
 667     fMinimizeOnClose = false;
 668 #endif
 669
 670     //// todo: shouldn't we catch exceptions and try to recover and continue?
 671     CRITICAL_BLOCK(cs_mapKeys)
 672     CRITICAL_BLOCK(cs_mapWallet)
 673     {
 674         // Get cursor
 675         Dbc* pcursor = GetCursor();
 676         if (!pcursor)
 677             return false;
 678
 679         loop
 680         {
 681             // Read next record
 682             CDataStream ssKey;
 683             CDataStream ssValue;
 684             int ret = ReadAtCursor(pcursor, ssKey, ssValue);
 685             if (ret == DB_NOTFOUND)
 686                 break;
 687             else if (ret != 0)
 688                 return false;
 689
 690             // Unserialize
 691             // Taking advantage of the fact that pair serialization
 692             // is just the two items serialized one after the other
 693             string strType;
 694             ssKey >> strType;
 695             if (strType == "name")
 696             {
 697                 string strAddress;
 698                 ssKey >> strAddress;
 699                 ssValue >> mapAddressBook[strAddress];
 700             }
 701             else if (strType == "tx")
 702             {
 703                 uint256 hash;
 704                 ssKey >> hash;
 705                 CWalletTx& wtx = mapWallet[hash];
 706                 ssValue >> wtx;
 707
 708                 if (wtx.GetHash() != hash)
 709                     printf("Error in wallet.dat, hash mismatch\n");
 710
 711                 // Undo serialize changes in 31600
 712                 if (31404 <= wtx.fTimeReceivedIsTxTime && wtx.fTimeReceivedIsTxTime <= 31703)
 713                 {
 714                     if (!ssValue.empty())
 715                     {
 716                         char fTmp;
 717                         char fUnused;
 718                         ssValue >> fTmp >> fUnused >> wtx.strFromAccount;
 719                         printf("LoadWallet() upgrading tx ver=%d %d '%s' %s\n", wtx.fTimeReceivedIsTxTime, fTmp, wtx.strFromAccount.c_str(), hash.ToString().c_str());
 720                         wtx.fTimeReceivedIsTxTime = fTmp;
 721                     }
 722                     else
 723                     {
 724                         printf("LoadWallet() repairing tx ver=%d %s\n", wtx.fTimeReceivedIsTxTime, hash.ToString().c_str());
 725                         wtx.fTimeReceivedIsTxTime = 0;
 726                     }
 727                     vWalletUpgrade.push_back(hash);
 728                 }
 729
 730                 //// debug print
 731                 //printf("LoadWallet  %s\n", wtx.GetHash().ToString().c_str());
 732                 //printf(" %12I64d  %s  %s  %s\n",
 733                 //    wtx.vout[0].nValue,
 734                 //    DateTimeStrFormat("%x %H:%M:%S", wtx.GetBlockTime()).c_str(),
 735                 //    wtx.hashBlock.ToString().substr(0,20).c_str(),
 736                 //    wtx.mapValue["message"].c_str());
 737             }
 738             else if (strType == "acentry")
 739             {
 740                 string strAccount;
 741                 ssKey >> strAccount;
 742                 uint64 nNumber;
 743                 ssKey >> nNumber;
 744                 if (nNumber > nAccountingEntryNumber)
 745                     nAccountingEntryNumber = nNumber;
 746             }
 747             else if (strType == "key" || strType == "wkey")
 748             {
 749                 vector<unsigned char> vchPubKey;
 750                 ssKey >> vchPubKey;
 751                 CWalletKey wkey;
 752                 if (strType == "key")
 753                     ssValue >> wkey.vchPrivKey;
 754                 else
 755                     ssValue >> wkey;
 756
 757                 mapKeys[vchPubKey] = wkey.vchPrivKey;
 758                 mapPubKeys[Hash160(vchPubKey)] = vchPubKey;
 759             }
 760             else if (strType == "defaultkey")
 761             {
 762                 ssValue >> vchDefaultKey;
 763             }
 764             else if (strType == "pool")
 765             {
 766                 int64 nIndex;
 767                 ssKey >> nIndex;
 768                 setKeyPool.insert(nIndex);
 769             }
 770             else if (strType == "version")
 771             {
 772                 ssValue >> nFileVersion;
 773                 if (nFileVersion == 10300)
 774                     nFileVersion = 300;
 775             }
 776             else if (strType == "setting")
 777             {
 778                 string strKey;
 779                 ssKey >> strKey;
 780
 781                 // Menu state
 782                 if (strKey == "fGenerateBitcoins")  ssValue >> fGenerateBitcoins;
 783
 784                 // Options
 785                 if (strKey == "nTransactionFee")    ssValue >> nTransactionFee;
 786                 if (strKey == "addrIncoming")       ssValue >> addrIncoming;
 787                 if (strKey == "fLimitProcessors")   ssValue >> fLimitProcessors;
 788                 if (strKey == "nLimitProcessors")   ssValue >> nLimitProcessors;
 789                 if (strKey == "fMinimizeToTray")    ssValue >> fMinimizeToTray;
 790                 if (strKey == "fMinimizeOnClose")   ssValue >> fMinimizeOnClose;
 791                 if (strKey == "fUseProxy")          ssValue >> fUseProxy;
 792                 if (strKey == "addrProxy")          ssValue >> addrProxy;
 793
 794             }
 795         }
 796         pcursor->close();
 797     }
 798
 799     foreach(uint256 hash, vWalletUpgrade)
 800         WriteTx(hash, mapWallet[hash]);
 801
 802     printf("nFileVersion = %d\n", nFileVersion);
 803     printf("fGenerateBitcoins = %d\n", fGenerateBitcoins);
 804     printf("nTransactionFee = %"PRI64d"\n", nTransactionFee);
 805     printf("addrIncoming = %s\n", addrIncoming.ToString().c_str());
 806     printf("fMinimizeToTray = %d\n", fMinimizeToTray);
 807     printf("fMinimizeOnClose = %d\n", fMinimizeOnClose);
 808     printf("fUseProxy = %d\n", fUseProxy);
 809     printf("addrProxy = %s\n", addrProxy.ToString().c_str());
 810
 811
 812     // Upgrade
 813     if (nFileVersion < VERSION)
 814     {
 815         // Get rid of old debug.log file in current directory
 816         if (nFileVersion <= 105 && !pszSetDataDir[0])
 817             unlink("debug.log");
 818
 819         WriteVersion(VERSION);
 820     }
 821
 822
 823     return true;
 824 }
 825
 826 bool LoadWallet(bool& fFirstRunRet)
 827 {
 828     fFirstRunRet = false;
 829     if (!CWalletDB("cr+").LoadWallet())
 830         return false;
 831     fFirstRunRet = vchDefaultKey.empty();
 832
 833     if (mapKeys.count(vchDefaultKey))
 834     {
 835         // Set keyUser
 836         keyUser.SetPubKey(vchDefaultKey);
 837         keyUser.SetPrivKey(mapKeys[vchDefaultKey]);
 838     }
 839     else
 840     {
 841         // Create new keyUser and set as default key
 842         RandAddSeedPerfmon();
 843         keyUser.MakeNewKey();
 844         if (!AddKey(keyUser))
 845             return false;
 846         if (!SetAddressBookName(PubKeyToAddress(keyUser.GetPubKey()), "Your Address"))
 847             return false;
 848         CWalletDB().WriteDefaultKey(keyUser.GetPubKey());
 849     }
 850
 851     CreateThread(ThreadFlushWalletDB, NULL);
 852     return true;
 853 }
 854
 855 void ThreadFlushWalletDB(void* parg)
 856 {
 857     static bool fOneThread;
 858     if (fOneThread)
 859         return;
 860     fOneThread = true;
 861     if (mapArgs.count("-noflushwallet"))
 862         return;
 863
 864     unsigned int nLastSeen = nWalletDBUpdated;
 865     unsigned int nLastFlushed = nWalletDBUpdated;
 866     int64 nLastWalletUpdate = GetTime();
 867     while (!fShutdown)
 868     {
 869         Sleep(500);
 870
 871         if (nLastSeen != nWalletDBUpdated)
 872         {
 873             nLastSeen = nWalletDBUpdated;
 874             nLastWalletUpdate = GetTime();
 875         }
 876
 877         if (nLastFlushed != nWalletDBUpdated && GetTime() - nLastWalletUpdate >= 2)
 878         {
 879             TRY_CRITICAL_BLOCK(cs_db)
 880             {
 881                 // Don't do this if any databases are in use
 882                 int nRefCount = 0;
 883                 map<string, int>::iterator mi = mapFileUseCount.begin();
 884                 while (mi != mapFileUseCount.end())
 885                 {
 886                     nRefCount += (*mi).second;
 887                     mi++;
 888                 }
 889
 890                 if (nRefCount == 0 && !fShutdown)
 891                 {
 892                     string strFile = "wallet.dat";
 893                     map<string, int>::iterator mi = mapFileUseCount.find(strFile);
 894                     if (mi != mapFileUseCount.end())
 895                     {
 896                         printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
 897                         printf("Flushing wallet.dat\n");
 898                         nLastFlushed = nWalletDBUpdated;
 899                         int64 nStart = GetTimeMillis();
 900
 901                         // Flush wallet.dat so it's self contained
 902                         CloseDb(strFile);
 903                         dbenv.txn_checkpoint(0, 0, 0);
 904                         dbenv.lsn_reset(strFile.c_str(), 0);
 905
 906                         mapFileUseCount.erase(mi++);
 907                         printf("Flushed wallet.dat %"PRI64d"ms\n", GetTimeMillis() - nStart);
 908                     }
 909                 }
 910             }
 911         }
 912     }
 913 }
 914
 915 void BackupWallet(const string& strDest)
 916 {
 917     while (!fShutdown)
 918     {
 919         CRITICAL_BLOCK(cs_db)
 920         {
 921             const string strFile = "wallet.dat";
 922             if (!mapFileUseCount.count(strFile) || mapFileUseCount[strFile] == 0)
 923             {
 924                 // Flush log data to the dat file
 925                 CloseDb(strFile);
 926                 dbenv.txn_checkpoint(0, 0, 0);
 927                 dbenv.lsn_reset(strFile.c_str(), 0);
 928                 mapFileUseCount.erase(strFile);
 929
 930                 // Copy wallet.dat
 931                 filesystem::path pathSrc(GetDataDir() + "/" + strFile);
 932                 filesystem::path pathDest(strDest);
 933                 if (filesystem::is_directory(pathDest))
 934                     pathDest = pathDest / strFile;
 935 #if BOOST_VERSION >= 104000
 936                 filesystem::copy_file(pathSrc, pathDest, filesystem::copy_option::overwrite_if_exists);
 937 #else
 938                 filesystem::copy_file(pathSrc, pathDest);
 939 #endif
 940                 printf("copied wallet.dat to %s\n", pathDest.string().c_str());
 941
 942                 return;
 943             }
 944         }
 945         Sleep(100);
 946     }
 947 }
 948
 949
 950 void CWalletDB::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
 951 {
 952     nIndex = -1;
 953     keypool.vchPubKey.clear();
 954     CRITICAL_BLOCK(cs_main)
 955     CRITICAL_BLOCK(cs_mapWallet)
 956     CRITICAL_BLOCK(cs_setKeyPool)
 957     {
 958         // Top up key pool
 959         int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
 960         while (setKeyPool.size() < nTargetSize+1)
 961         {
 962             int64 nEnd = 1;
 963             if (!setKeyPool.empty())
 964                 nEnd = *(--setKeyPool.end()) + 1;
 965             if (!Write(make_pair(string("pool"), nEnd), CKeyPool(GenerateNewKey())))
 966                 throw runtime_error("ReserveKeyFromKeyPool() : writing generated key failed");
 967             setKeyPool.insert(nEnd);
 968             printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size());
 969         }
 970
 971         // Get the oldest key
 972         assert(!setKeyPool.empty());
 973         nIndex = *(setKeyPool.begin());
 974         setKeyPool.erase(setKeyPool.begin());
 975         if (!Read(make_pair(string("pool"), nIndex), keypool))
 976             throw runtime_error("ReserveKeyFromKeyPool() : read failed");
 977         if (!mapKeys.count(keypool.vchPubKey))
 978             throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
 979         assert(!keypool.vchPubKey.empty());
 980         printf("keypool reserve %"PRI64d"\n", nIndex);
 981     }
 982 }
 983
 984 void CWalletDB::KeepKey(int64 nIndex)
 985 {
 986     // Remove from key pool
 987     CRITICAL_BLOCK(cs_main)
 988     CRITICAL_BLOCK(cs_mapWallet)
 989     {
 990         Erase(make_pair(string("pool"), nIndex));
 991     }
 992     printf("keypool keep %"PRI64d"\n", nIndex);
 993 }
 994
 995 void CWalletDB::ReturnKey(int64 nIndex)
 996 {
 997     // Return to key pool
 998     CRITICAL_BLOCK(cs_setKeyPool)
 999         setKeyPool.insert(nIndex);
1000     printf("keypool return %"PRI64d"\n", nIndex);
1001 }
1002
1003 vector<unsigned char> GetKeyFromKeyPool()
1004 {
1005     CWalletDB walletdb;
1006     int64 nIndex = 0;
1007     CKeyPool keypool;
1008     walletdb.ReserveKeyFromKeyPool(nIndex, keypool);
1009     walletdb.KeepKey(nIndex);
1010     return keypool.vchPubKey;
1011 }
1012
1013 int64 GetOldestKeyPoolTime()
1014 {
1015     CWalletDB walletdb;
1016     int64 nIndex = 0;
1017     CKeyPool keypool;
1018     walletdb.ReserveKeyFromKeyPool(nIndex, keypool);
1019     walletdb.ReturnKey(nIndex);
1020     return keypool.nTime;
1021 }