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.
7 void ThreadFlushWalletDB(void* parg);
10 unsigned int nWalletDBUpdated;
19 static CCriticalSection cs_db;
20 static bool fDbEnvInit = false;
22 static map<string, int> mapFileUseCount;
23 static map<string, Db*> mapDb;
43 CDB::CDB(const char* pszFile, const char* pszMode) : pdb(NULL)
49 fReadOnly = (!strchr(pszMode, '+') && !strchr(pszMode, 'w'));
50 bool fCreate = strchr(pszMode, 'c');
51 unsigned int nFlags = DB_THREAD;
61 string strDataDir = GetDataDir();
62 string strLogDir = strDataDir + "/database";
63 _mkdir(strLogDir.c_str());
64 string strErrorFile = strDataDir + "/db.log";
65 printf("dbenv.open strLogDir=%s strErrorFile=%s\n", strLogDir.c_str(), strErrorFile.c_str());
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(),
84 throw runtime_error(strprintf("CDB() : error %d opening database environment\n", ret));
89 ++mapFileUseCount[strFile];
93 pdb = new Db(&dbenv, 0);
95 ret = pdb->open(NULL, // Txn pointer
97 "main", // Logical db name
98 DB_BTREE, // Database type
106 CRITICAL_BLOCK(cs_db)
107 --mapFileUseCount[strFile];
109 throw runtime_error(strprintf("CDB() : can't open database file %s, error %d\n", pszFile, ret));
112 if (fCreate && !Exists(string("version")))
114 bool fTmp = fReadOnly;
116 WriteVersion(VERSION);
120 mapDb[strFile] = pdb;
130 vTxn.front()->abort();
133 dbenv.txn_checkpoint(0, 0, 0);
135 CRITICAL_BLOCK(cs_db)
136 --mapFileUseCount[strFile];
139 void CloseDb(const string& strFile)
141 CRITICAL_BLOCK(cs_db)
143 if (mapDb[strFile] != NULL)
145 // Close the database handle
146 Db* pdb = mapDb[strFile];
149 mapDb[strFile] = NULL;
154 void DBFlush(bool fShutdown)
156 // Flush log data to the actual data file
157 // on all files that are not in use
158 printf("DBFlush(%s)%s\n", fShutdown ? "true" : "false", fDbEnvInit ? "" : " db not started");
161 CRITICAL_BLOCK(cs_db)
163 map<string, int>::iterator mi = mapFileUseCount.begin();
164 while (mi != mapFileUseCount.end())
166 string strFile = (*mi).first;
167 int nRefCount = (*mi).second;
168 printf("%s refcount=%d\n", strFile.c_str(), nRefCount);
171 // Move log data to the dat file
173 dbenv.txn_checkpoint(0, 0, 0);
174 printf("%s flush\n", strFile.c_str());
175 dbenv.lsn_reset(strFile.c_str(), 0);
176 mapFileUseCount.erase(mi++);
184 if (mapFileUseCount.empty())
185 dbenv.log_archive(&listp, DB_ARCH_REMOVE);
201 bool CTxDB::ReadTxIndex(uint256 hash, CTxIndex& txindex)
205 return Read(make_pair(string("tx"), hash), txindex);
208 bool CTxDB::UpdateTxIndex(uint256 hash, const CTxIndex& txindex)
211 return Write(make_pair(string("tx"), hash), txindex);
214 bool CTxDB::AddTxIndex(const CTransaction& tx, const CDiskTxPos& pos, int nHeight)
219 uint256 hash = tx.GetHash();
220 CTxIndex txindex(pos, tx.vout.size());
221 return Write(make_pair(string("tx"), hash), txindex);
224 bool CTxDB::EraseTxIndex(const CTransaction& tx)
227 uint256 hash = tx.GetHash();
229 return Erase(make_pair(string("tx"), hash));
232 bool CTxDB::ContainsTx(uint256 hash)
235 return Exists(make_pair(string("tx"), hash));
238 bool CTxDB::ReadOwnerTxes(uint160 hash160, int nMinHeight, vector<CTransaction>& vtx)
244 Dbc* pcursor = GetCursor();
248 unsigned int fFlags = DB_SET_RANGE;
253 if (fFlags == DB_SET_RANGE)
254 ssKey << string("owner") << hash160 << CDiskTxPos(0, 0, 0);
256 int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
258 if (ret == DB_NOTFOUND)
270 ssKey >> strType >> hashItem >> pos;
272 ssValue >> nItemHeight;
275 if (strType != "owner" || hashItem != hash160)
277 if (nItemHeight >= nMinHeight)
279 vtx.resize(vtx.size()+1);
280 if (!vtx.back().ReadFromDisk(pos))
292 bool CTxDB::ReadDiskTx(uint256 hash, CTransaction& tx, CTxIndex& txindex)
296 if (!ReadTxIndex(hash, txindex))
298 return (tx.ReadFromDisk(txindex.pos));
301 bool CTxDB::ReadDiskTx(uint256 hash, CTransaction& tx)
304 return ReadDiskTx(hash, tx, txindex);
307 bool CTxDB::ReadDiskTx(COutPoint outpoint, CTransaction& tx, CTxIndex& txindex)
309 return ReadDiskTx(outpoint.hash, tx, txindex);
312 bool CTxDB::ReadDiskTx(COutPoint outpoint, CTransaction& tx)
315 return ReadDiskTx(outpoint.hash, tx, txindex);
318 bool CTxDB::WriteBlockIndex(const CDiskBlockIndex& blockindex)
320 return Write(make_pair(string("blockindex"), blockindex.GetBlockHash()), blockindex);
323 bool CTxDB::EraseBlockIndex(uint256 hash)
325 return Erase(make_pair(string("blockindex"), hash));
328 bool CTxDB::ReadHashBestChain(uint256& hashBestChain)
330 return Read(string("hashBestChain"), hashBestChain);
333 bool CTxDB::WriteHashBestChain(uint256 hashBestChain)
335 return Write(string("hashBestChain"), hashBestChain);
338 CBlockIndex* InsertBlockIndex(uint256 hash)
344 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
345 if (mi != mapBlockIndex.end())
349 CBlockIndex* pindexNew = new CBlockIndex();
351 throw runtime_error("LoadBlockIndex() : new CBlockIndex failed");
352 mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
353 pindexNew->phashBlock = &((*mi).first);
358 bool CTxDB::LoadBlockIndex()
361 Dbc* pcursor = GetCursor();
365 unsigned int fFlags = DB_SET_RANGE;
370 if (fFlags == DB_SET_RANGE)
371 ssKey << make_pair(string("blockindex"), uint256(0));
373 int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
375 if (ret == DB_NOTFOUND)
383 if (strType == "blockindex")
385 CDiskBlockIndex diskindex;
386 ssValue >> diskindex;
388 // Construct block index object
389 CBlockIndex* pindexNew = InsertBlockIndex(diskindex.GetBlockHash());
390 pindexNew->pprev = InsertBlockIndex(diskindex.hashPrev);
391 pindexNew->pnext = InsertBlockIndex(diskindex.hashNext);
392 pindexNew->nFile = diskindex.nFile;
393 pindexNew->nBlockPos = diskindex.nBlockPos;
394 pindexNew->nHeight = diskindex.nHeight;
395 pindexNew->nVersion = diskindex.nVersion;
396 pindexNew->hashMerkleRoot = diskindex.hashMerkleRoot;
397 pindexNew->nTime = diskindex.nTime;
398 pindexNew->nBits = diskindex.nBits;
399 pindexNew->nNonce = diskindex.nNonce;
401 // Watch for genesis block and best block
402 if (pindexGenesisBlock == NULL && diskindex.GetBlockHash() == hashGenesisBlock)
403 pindexGenesisBlock = pindexNew;
412 if (!ReadHashBestChain(hashBestChain))
414 if (pindexGenesisBlock == NULL)
416 return error("CTxDB::LoadBlockIndex() : hashBestChain not found");
419 if (!mapBlockIndex.count(hashBestChain))
420 return error("CTxDB::LoadBlockIndex() : blockindex for hashBestChain not found");
421 pindexBest = mapBlockIndex[hashBestChain];
422 nBestHeight = pindexBest->nHeight;
423 printf("LoadBlockIndex(): hashBestChain=%s height=%d\n", hashBestChain.ToString().substr(0,16).c_str(), nBestHeight);
436 bool CAddrDB::WriteAddress(const CAddress& addr)
438 return Write(make_pair(string("addr"), addr.GetKey()), addr);
441 bool CAddrDB::LoadAddresses()
443 CRITICAL_BLOCK(cs_mapAddresses)
445 // Load user provided addresses
446 CAutoFile filein = fopen((GetDataDir() + "/addr.txt").c_str(), "rt");
452 while (fgets(psz, sizeof(psz), filein))
454 CAddress addr(psz, NODE_NETWORK);
455 addr.nTime = 0; // so it won't relay unless successfully connected
464 Dbc* pcursor = GetCursor();
473 int ret = ReadAtCursor(pcursor, ssKey, ssValue);
474 if (ret == DB_NOTFOUND)
482 if (strType == "addr")
486 mapAddresses.insert(make_pair(addr.GetKey(), addr));
491 printf("Loaded %d addresses\n", mapAddresses.size());
493 // Fix for possible bug that manifests in mapAddresses.count in irc.cpp,
494 // just need to call count here and it doesn't happen there. The bug was the
495 // pack pragma in irc.cpp and has been fixed, but I'm not in a hurry to delete this.
496 mapAddresses.count(vector<unsigned char>(18));
504 return CAddrDB("cr+").LoadAddresses();
514 bool CWalletDB::LoadWallet()
516 vchDefaultKey.clear();
517 int nFileVersion = 0;
521 // Tray icon sometimes disappears on 9.10 karmic koala 64-bit, leaving no way to access the program
522 fMinimizeToTray = false;
523 fMinimizeOnClose = false;
526 //// todo: shouldn't we catch exceptions and try to recover and continue?
527 CRITICAL_BLOCK(cs_mapKeys)
528 CRITICAL_BLOCK(cs_mapWallet)
531 Dbc* pcursor = GetCursor();
540 int ret = ReadAtCursor(pcursor, ssKey, ssValue);
541 if (ret == DB_NOTFOUND)
547 // Taking advantage of the fact that pair serialization
548 // is just the two items serialized one after the other
551 if (strType == "name")
555 ssValue >> mapAddressBook[strAddress];
557 else if (strType == "tx")
561 CWalletTx& wtx = mapWallet[hash];
564 if (wtx.GetHash() != hash)
565 printf("Error in wallet.dat, hash mismatch\n");
568 //printf("LoadWallet %s\n", wtx.GetHash().ToString().c_str());
569 //printf(" %12I64d %s %s %s\n",
570 // wtx.vout[0].nValue,
571 // DateTimeStrFormat("%x %H:%M:%S", wtx.nTime).c_str(),
572 // wtx.hashBlock.ToString().substr(0,16).c_str(),
573 // wtx.mapValue["message"].c_str());
575 else if (strType == "key" || strType == "wkey")
577 vector<unsigned char> vchPubKey;
580 if (strType == "key")
581 ssValue >> wkey.vchPrivKey;
585 mapKeys[vchPubKey] = wkey.vchPrivKey;
586 mapPubKeys[Hash160(vchPubKey)] = vchPubKey;
588 else if (strType == "defaultkey")
590 ssValue >> vchDefaultKey;
592 else if (strType == "version")
594 ssValue >> nFileVersion;
596 else if (strType == "setting")
602 if (strKey == "fGenerateBitcoins") ssValue >> fGenerateBitcoins;
605 if (strKey == "nTransactionFee") ssValue >> nTransactionFee;
606 if (strKey == "addrIncoming") ssValue >> addrIncoming;
607 if (strKey == "fLimitProcessors") ssValue >> fLimitProcessors;
608 if (strKey == "nLimitProcessors") ssValue >> nLimitProcessors;
609 if (strKey == "fMinimizeToTray") ssValue >> fMinimizeToTray;
610 if (strKey == "fMinimizeOnClose") ssValue >> fMinimizeOnClose;
611 if (strKey == "fUseProxy") ssValue >> fUseProxy;
612 if (strKey == "addrProxy") ssValue >> addrProxy;
619 printf("nFileVersion = %d\n", nFileVersion);
620 printf("fGenerateBitcoins = %d\n", fGenerateBitcoins);
621 printf("nTransactionFee = %"PRI64d"\n", nTransactionFee);
622 printf("addrIncoming = %s\n", addrIncoming.ToString().c_str());
623 printf("fMinimizeToTray = %d\n", fMinimizeToTray);
624 printf("fMinimizeOnClose = %d\n", fMinimizeOnClose);
625 printf("fUseProxy = %d\n", fUseProxy);
626 printf("addrProxy = %s\n", addrProxy.ToString().c_str());
629 // The transaction fee setting won't be needed for many years to come.
630 // Setting it to zero here in case they set it to something in an earlier version.
631 if (nTransactionFee != 0)
634 WriteSetting("nTransactionFee", nTransactionFee);
638 if (nFileVersion < VERSION)
640 // Get rid of old debug.log file in current directory
641 if (nFileVersion <= 105 && !pszSetDataDir[0])
644 WriteVersion(VERSION);
650 bool LoadWallet(bool& fFirstRunRet)
652 fFirstRunRet = false;
653 if (!CWalletDB("cr+").LoadWallet())
655 fFirstRunRet = vchDefaultKey.empty();
657 if (mapKeys.count(vchDefaultKey))
660 keyUser.SetPubKey(vchDefaultKey);
661 keyUser.SetPrivKey(mapKeys[vchDefaultKey]);
665 // Create new keyUser and set as default key
666 RandAddSeedPerfmon();
667 keyUser.MakeNewKey();
668 if (!AddKey(keyUser))
670 if (!SetAddressBookName(PubKeyToAddress(keyUser.GetPubKey()), "Your Address"))
672 CWalletDB().WriteDefaultKey(keyUser.GetPubKey());
675 CreateThread(ThreadFlushWalletDB, NULL);
679 void ThreadFlushWalletDB(void* parg)
681 static bool fOneThread;
685 if (mapArgs.count("-noflushwallet"))
688 unsigned int nLastSeen = nWalletDBUpdated;
689 unsigned int nLastFlushed = nWalletDBUpdated;
690 int64 nLastWalletUpdate = GetTime();
695 if (nLastSeen != nWalletDBUpdated)
697 nLastSeen = nWalletDBUpdated;
698 nLastWalletUpdate = GetTime();
701 if (nLastFlushed != nWalletDBUpdated && GetTime() - nLastWalletUpdate >= 2)
703 TRY_CRITICAL_BLOCK(cs_db)
705 // Don't do this if any databases are in use
707 map<string, int>::iterator mi = mapFileUseCount.begin();
708 while (mi != mapFileUseCount.end())
710 nRefCount += (*mi).second;
714 if (nRefCount == 0 && !fShutdown)
716 string strFile = "wallet.dat";
717 map<string, int>::iterator mi = mapFileUseCount.find(strFile);
718 if (mi != mapFileUseCount.end())
720 printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
721 printf("Flushing wallet.dat\n");
722 nLastFlushed = nWalletDBUpdated;
723 int64 nStart = GetTimeMillis();
725 // Flush wallet.dat so it's self contained
727 dbenv.txn_checkpoint(0, 0, 0);
728 dbenv.lsn_reset(strFile.c_str(), 0);
730 mapFileUseCount.erase(mi++);
731 printf("Flushed wallet.dat %"PRI64d"ms\n", GetTimeMillis() - nStart);