diff options
Diffstat (limited to 'src/wallet')
-rw-r--r-- | src/wallet/db.cpp | 167 | ||||
-rw-r--r-- | src/wallet/db.h | 11 | ||||
-rw-r--r-- | src/wallet/rpcdump.cpp | 6 | ||||
-rw-r--r-- | src/wallet/test/wallet_tests.cpp | 2 | ||||
-rw-r--r-- | src/wallet/wallet.cpp | 76 | ||||
-rw-r--r-- | src/wallet/wallet.h | 36 | ||||
-rw-r--r-- | src/wallet/walletdb.cpp | 181 | ||||
-rw-r--r-- | src/wallet/walletdb.h | 17 |
8 files changed, 301 insertions, 195 deletions
diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp index 7d1b429b30..74d87f9d15 100644 --- a/src/wallet/db.cpp +++ b/src/wallet/db.cpp @@ -18,6 +18,7 @@ #endif #include <boost/filesystem.hpp> +#include <boost/foreach.hpp> #include <boost/thread.hpp> #include <boost/version.hpp> @@ -145,7 +146,7 @@ void CDBEnv::MakeMock() fMockDb = true; } -CDBEnv::VerifyResult CDBEnv::Verify(const std::string& strFile, bool (*recoverFunc)(CDBEnv& dbenv, const std::string& strFile)) +CDBEnv::VerifyResult CDBEnv::Verify(const std::string& strFile, bool (*recoverFunc)(const std::string& strFile)) { LOCK(cs_db); assert(mapFileUseCount.count(strFile) == 0); @@ -158,10 +159,134 @@ CDBEnv::VerifyResult CDBEnv::Verify(const std::string& strFile, bool (*recoverFu return RECOVER_FAIL; // Try to recover: - bool fRecovered = (*recoverFunc)(*this, strFile); + bool fRecovered = (*recoverFunc)(strFile); return (fRecovered ? RECOVER_OK : RECOVER_FAIL); } +bool CDB::Recover(const std::string& filename, void *callbackDataIn, bool (*recoverKVcallback)(void* callbackData, CDataStream ssKey, CDataStream ssValue)) +{ + // Recovery procedure: + // move wallet file to wallet.timestamp.bak + // Call Salvage with fAggressive=true to + // get as much data as possible. + // Rewrite salvaged data to fresh wallet file + // Set -rescan so any missing transactions will be + // found. + int64_t now = GetTime(); + std::string newFilename = strprintf("wallet.%d.bak", now); + + int result = bitdb.dbenv->dbrename(NULL, filename.c_str(), NULL, + newFilename.c_str(), DB_AUTO_COMMIT); + if (result == 0) + LogPrintf("Renamed %s to %s\n", filename, newFilename); + else + { + LogPrintf("Failed to rename %s to %s\n", filename, newFilename); + return false; + } + + std::vector<CDBEnv::KeyValPair> salvagedData; + bool fSuccess = bitdb.Salvage(newFilename, true, salvagedData); + if (salvagedData.empty()) + { + LogPrintf("Salvage(aggressive) found no records in %s.\n", newFilename); + return false; + } + LogPrintf("Salvage(aggressive) found %u records\n", salvagedData.size()); + + std::unique_ptr<Db> pdbCopy(new Db(bitdb.dbenv, 0)); + int ret = pdbCopy->open(NULL, // Txn pointer + filename.c_str(), // Filename + "main", // Logical db name + DB_BTREE, // Database type + DB_CREATE, // Flags + 0); + if (ret > 0) + { + LogPrintf("Cannot create database file %s\n", filename); + return false; + } + + DbTxn* ptxn = bitdb.TxnBegin(); + BOOST_FOREACH(CDBEnv::KeyValPair& row, salvagedData) + { + if (recoverKVcallback) + { + CDataStream ssKey(row.first, SER_DISK, CLIENT_VERSION); + CDataStream ssValue(row.second, SER_DISK, CLIENT_VERSION); + string strType, strErr; + if (!(*recoverKVcallback)(callbackDataIn, ssKey, ssValue)) + continue; + } + Dbt datKey(&row.first[0], row.first.size()); + Dbt datValue(&row.second[0], row.second.size()); + int ret2 = pdbCopy->put(ptxn, &datKey, &datValue, DB_NOOVERWRITE); + if (ret2 > 0) + fSuccess = false; + } + ptxn->commit(0); + pdbCopy->close(0); + + return fSuccess; +} + +bool CDB::VerifyEnvironment(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& errorStr) +{ + LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0)); + LogPrintf("Using wallet %s\n", walletFile); + + // Wallet file must be a plain filename without a directory + if (walletFile != boost::filesystem::basename(walletFile) + boost::filesystem::extension(walletFile)) + { + errorStr = strprintf(_("Wallet %s resides outside data directory %s"), walletFile, dataDir.string()); + return false; + } + + if (!bitdb.Open(dataDir)) + { + // try moving the database env out of the way + boost::filesystem::path pathDatabase = dataDir / "database"; + boost::filesystem::path pathDatabaseBak = dataDir / strprintf("database.%d.bak", GetTime()); + try { + boost::filesystem::rename(pathDatabase, pathDatabaseBak); + LogPrintf("Moved old %s to %s. Retrying.\n", pathDatabase.string(), pathDatabaseBak.string()); + } catch (const boost::filesystem::filesystem_error&) { + // failure is ok (well, not really, but it's not worse than what we started with) + } + + // try again + if (!bitdb.Open(dataDir)) { + // if it still fails, it probably means we can't even create the database env + errorStr = strprintf(_("Error initializing wallet database environment %s!"), GetDataDir()); + return false; + } + } + return true; +} + +bool CDB::VerifyDatabaseFile(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& warningStr, std::string& errorStr, bool (*recoverFunc)(const std::string& strFile)) +{ + if (boost::filesystem::exists(dataDir / walletFile)) + { + CDBEnv::VerifyResult r = bitdb.Verify(walletFile, recoverFunc); + if (r == CDBEnv::RECOVER_OK) + { + warningStr = strprintf(_("Warning: Wallet file corrupt, data salvaged!" + " Original %s saved as %s in %s; if" + " your balance or transactions are incorrect you should" + " restore from a backup."), + walletFile, "wallet.{timestamp}.bak", dataDir); + } + if (r == CDBEnv::RECOVER_FAIL) + { + errorStr = strprintf(_("%s corrupt, salvage failed"), walletFile); + return false; + } + } + // also return true if files does not exists + return true; +} + /* End of headers, beginning of key/value data */ static const char *HEADER_END = "HEADER=END"; /* End of key/value data */ @@ -473,3 +598,41 @@ void CDBEnv::Flush(bool fShutdown) } } } + +bool CDB::PeriodicFlush(std::string strFile) +{ + bool ret = false; + TRY_LOCK(bitdb.cs_db,lockDb); + if (lockDb) + { + // Don't do this if any databases are in use + int nRefCount = 0; + map<string, int>::iterator mi = bitdb.mapFileUseCount.begin(); + while (mi != bitdb.mapFileUseCount.end()) + { + nRefCount += (*mi).second; + mi++; + } + + if (nRefCount == 0) + { + boost::this_thread::interruption_point(); + map<string, int>::iterator mi = bitdb.mapFileUseCount.find(strFile); + if (mi != bitdb.mapFileUseCount.end()) + { + LogPrint("db", "Flushing %s\n", strFile); + int64_t nStart = GetTimeMillis(); + + // Flush wallet file so it's self contained + bitdb.CloseDb(strFile); + bitdb.CheckpointLSN(strFile); + + bitdb.mapFileUseCount.erase(mi++); + LogPrint("db", "Flushed %s %dms\n", strFile, GetTimeMillis() - nStart); + ret = true; + } + } + } + + return ret; +} diff --git a/src/wallet/db.h b/src/wallet/db.h index b4ce044e7f..19c54e314c 100644 --- a/src/wallet/db.h +++ b/src/wallet/db.h @@ -56,7 +56,7 @@ public: enum VerifyResult { VERIFY_OK, RECOVER_OK, RECOVER_FAIL }; - VerifyResult Verify(const std::string& strFile, bool (*recoverFunc)(CDBEnv& dbenv, const std::string& strFile)); + VerifyResult Verify(const std::string& strFile, bool (*recoverFunc)(const std::string& strFile)); /** * Salvage data from a file that Verify says is bad. * fAggressive sets the DB_AGGRESSIVE flag (see berkeley DB->verify() method documentation). @@ -104,6 +104,15 @@ protected: public: void Flush(); void Close(); + static bool Recover(const std::string& filename, void *callbackDataIn, bool (*recoverKVcallback)(void* callbackData, CDataStream ssKey, CDataStream ssValue)); + + /* flush the wallet passively (TRY_LOCK) + ideal to be called periodically */ + static bool PeriodicFlush(std::string strFile); + /* verifies the database environment */ + static bool VerifyEnvironment(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& errorStr); + /* verifies the database file */ + static bool VerifyDatabaseFile(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& warningStr, std::string& errorStr, bool (*recoverFunc)(const std::string& strFile)); private: CDB(const CDB&); diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp index 182a62cbb1..e02c6513e4 100644 --- a/src/wallet/rpcdump.cpp +++ b/src/wallet/rpcdump.cpp @@ -513,7 +513,7 @@ UniValue importwallet(const JSONRPCRequest& request) pwallet->ShowProgress("", 100); // hide progress dialog in GUI CBlockIndex *pindex = chainActive.Tip(); - while (pindex && pindex->pprev && pindex->GetBlockTime() > nTimeBegin - 7200) + while (pindex && pindex->pprev && pindex->GetBlockTime() > nTimeBegin - TIMESTAMP_WINDOW) pindex = pindex->pprev; pwallet->UpdateTimeFirstKey(nTimeBegin); @@ -1095,7 +1095,7 @@ UniValue importmulti(const JSONRPCRequest& mainRequest) } if (fRescan && fRunScan && requests.size()) { - CBlockIndex* pindex = nLowestTimestamp > minimumTimestamp ? chainActive.FindEarliestAtLeast(std::max<int64_t>(nLowestTimestamp - 7200, 0)) : chainActive.Genesis(); + CBlockIndex* pindex = nLowestTimestamp > minimumTimestamp ? chainActive.FindEarliestAtLeast(std::max<int64_t>(nLowestTimestamp - TIMESTAMP_WINDOW, 0)) : chainActive.Genesis(); CBlockIndex* scannedRange = nullptr; if (pindex) { scannedRange = pwallet->ScanForWalletTransactions(pindex, true); @@ -1112,7 +1112,7 @@ UniValue importmulti(const JSONRPCRequest& mainRequest) // range, or if the import result already has an error set, let // the result stand unmodified. Otherwise replace the result // with an error message. - if (GetImportTimestamp(request, now) - 7200 >= scannedRange->GetBlockTimeMax() || results.at(i).exists("error")) { + if (GetImportTimestamp(request, now) - TIMESTAMP_WINDOW >= scannedRange->GetBlockTimeMax() || results.at(i).exists("error")) { response.push_back(results.at(i)); } else { UniValue result = UniValue(UniValue::VOBJ); diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp index 19c1e9f291..42b67fac39 100644 --- a/src/wallet/test/wallet_tests.cpp +++ b/src/wallet/test/wallet_tests.cpp @@ -415,7 +415,7 @@ BOOST_FIXTURE_TEST_CASE(rescan, TestChain100Setup) CKey futureKey; futureKey.MakeNewKey(true); key.pushKV("scriptPubKey", HexStr(GetScriptForRawPubKey(futureKey.GetPubKey()))); - key.pushKV("timestamp", newTip->GetBlockTimeMax() + 7200); + key.pushKV("timestamp", newTip->GetBlockTimeMax() + TIMESTAMP_WINDOW); key.pushKV("internal", UniValue(true)); keys.push_back(key); JSONRPCRequest request; diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp index 0e95699bbd..b7c2d8ea8d 100644 --- a/src/wallet/wallet.cpp +++ b/src/wallet/wallet.cpp @@ -20,6 +20,7 @@ #include "primitives/transaction.h" #include "script/script.h" #include "script/sign.h" +#include "scheduler.h" #include "timedata.h" #include "txmempool.h" #include "util.h" @@ -444,57 +445,30 @@ bool CWallet::Verify() if (GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET)) return true; - LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0)); - std::string walletFile = GetArg("-wallet", DEFAULT_WALLET_DAT); - - LogPrintf("Using wallet %s\n", walletFile); uiInterface.InitMessage(_("Verifying wallet...")); + std::string walletFile = GetArg("-wallet", DEFAULT_WALLET_DAT); - // Wallet file must be a plain filename without a directory - if (walletFile != boost::filesystem::basename(walletFile) + boost::filesystem::extension(walletFile)) - return InitError(strprintf(_("Wallet %s resides outside data directory %s"), walletFile, GetDataDir().string())); + std::string strError; + if (!CWalletDB::VerifyEnvironment(walletFile, GetDataDir().string(), strError)) + return InitError(strError); - if (!bitdb.Open(GetDataDir())) - { - // try moving the database env out of the way - boost::filesystem::path pathDatabase = GetDataDir() / "database"; - boost::filesystem::path pathDatabaseBak = GetDataDir() / strprintf("database.%d.bak", GetTime()); - try { - boost::filesystem::rename(pathDatabase, pathDatabaseBak); - LogPrintf("Moved old %s to %s. Retrying.\n", pathDatabase.string(), pathDatabaseBak.string()); - } catch (const boost::filesystem::filesystem_error&) { - // failure is ok (well, not really, but it's not worse than what we started with) - } - - // try again - if (!bitdb.Open(GetDataDir())) { - // if it still fails, it probably means we can't even create the database env - return InitError(strprintf(_("Error initializing wallet database environment %s!"), GetDataDir())); - } - } - if (GetBoolArg("-salvagewallet", false)) { // Recover readable keypairs: - if (!CWalletDB::Recover(bitdb, walletFile, true)) + CWallet dummyWallet; + if (!CWalletDB::Recover(walletFile, (void *)&dummyWallet, CWalletDB::RecoverKeysOnlyFilter)) return false; } - - if (boost::filesystem::exists(GetDataDir() / walletFile)) + + std::string strWarning; + bool dbV = CWalletDB::VerifyDatabaseFile(walletFile, GetDataDir().string(), strWarning, strError); + if (!strWarning.empty()) + InitWarning(strWarning); + if (!dbV) { - CDBEnv::VerifyResult r = bitdb.Verify(walletFile, CWalletDB::Recover); - if (r == CDBEnv::RECOVER_OK) - { - InitWarning(strprintf(_("Warning: Wallet file corrupt, data salvaged!" - " Original %s saved as %s in %s; if" - " your balance or transactions are incorrect you should" - " restore from a backup."), - walletFile, "wallet.{timestamp}.bak", GetDataDir())); - } - if (r == CDBEnv::RECOVER_FAIL) - return InitError(strprintf(_("%s corrupt, salvage failed"), walletFile)); + InitError(strError); + return false; } - return true; } @@ -1518,7 +1492,7 @@ CBlockIndex* CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool f // no need to read and scan block, if block was created before // our wallet birthday (as adjusted for block time variability) - while (pindex && nTimeFirstKey && (pindex->GetBlockTime() < (nTimeFirstKey - 7200))) + while (pindex && nTimeFirstKey && (pindex->GetBlockTime() < (nTimeFirstKey - TIMESTAMP_WINDOW))) pindex = chainActive.Next(pindex); ShowProgress(_("Rescanning..."), 0); // show rescan progress in GUI as dialog or on splashscreen, if -rescan on startup @@ -3451,7 +3425,7 @@ void CWallet::GetKeyBirthTimes(std::map<CTxDestination, int64_t> &mapKeyBirth) c // Extract block timestamps for those keys for (std::map<CKeyID, CBlockIndex*>::const_iterator it = mapKeyFirstBlock.begin(); it != mapKeyFirstBlock.end(); it++) - mapKeyBirth[it->first] = it->second->GetBlockTime() - 7200; // block times can be 2h off + mapKeyBirth[it->first] = it->second->GetBlockTime() - TIMESTAMP_WINDOW; // block times can be 2h off } /** @@ -3707,17 +3681,13 @@ CWallet* CWallet::CreateWalletFromFile(const std::string walletFile) RegisterValidationInterface(walletInstance); - CBlockIndex *pindexRescan = chainActive.Tip(); - if (GetBoolArg("-rescan", false)) - pindexRescan = chainActive.Genesis(); - else + CBlockIndex *pindexRescan = chainActive.Genesis(); + if (!GetBoolArg("-rescan", false)) { CWalletDB walletdb(walletFile); CBlockLocator locator; if (walletdb.ReadBestBlock(locator)) pindexRescan = FindForkInGlobalIndex(chainActive, locator); - else - pindexRescan = chainActive.Genesis(); } if (chainActive.Tip() && chainActive.Tip() != pindexRescan) { @@ -3806,17 +3776,17 @@ bool CWallet::InitLoadWallet() return true; } -std::atomic<bool> CWallet::fFlushThreadRunning(false); +std::atomic<bool> CWallet::fFlushScheduled(false); -void CWallet::postInitProcess(boost::thread_group& threadGroup) +void CWallet::postInitProcess(CScheduler& scheduler) { // Add wallet transactions that aren't already in a block to mempool // Do this here as mempool requires genesis block to be loaded ReacceptWalletTransactions(); // Run a thread to flush wallet periodically - if (!CWallet::fFlushThreadRunning.exchange(true)) { - threadGroup.create_thread(ThreadFlushWalletDB); + if (!CWallet::fFlushScheduled.exchange(true)) { + scheduler.scheduleEvery(MaybeCompactWalletDB, 500); } } diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h index 99f6f43a47..02c1b18769 100644 --- a/src/wallet/wallet.h +++ b/src/wallet/wallet.h @@ -29,7 +29,6 @@ #include <vector> #include <boost/shared_ptr.hpp> -#include <boost/thread.hpp> extern CWallet* pwalletMain; @@ -79,6 +78,7 @@ class CCoinControl; class COutput; class CReserveKey; class CScript; +class CScheduler; class CTxMemPool; class CWalletTx; @@ -256,6 +256,31 @@ private: const CWallet* pwallet; public: + /** + * Key/value map with information about the transaction. + * + * The following keys can be read and written through the map and are + * serialized in the wallet database: + * + * "comment", "to" - comment strings provided to sendtoaddress, + * sendfrom, sendmany wallet RPCs + * "replaces_txid" - txid (as HexStr) of transaction replaced by + * bumpfee on transaction created by bumpfee + * "replaced_by_txid" - txid (as HexStr) of transaction created by + * bumpfee on transaction replaced by bumpfee + * "from", "message" - obsolete fields that could be set in UI prior to + * 2011 (removed in commit 4d9b223) + * + * The following keys are serialized in the wallet database, but shouldn't + * be read or written through the map (they will be temporarily added and + * removed from the map during serialization): + * + * "fromaccount" - serialized strFromAccount value + * "n" - serialized nOrderPos value + * "timesmart" - serialized nTimeSmart value + * "spent" - serialized vfSpent value that existed prior to + * 2014 (removed in commit 93a18a3) + */ mapValue_t mapValue; std::vector<std::pair<std::string, std::string> > vOrderForm; unsigned int fTimeReceivedIsTxTime; @@ -378,7 +403,6 @@ public: } mapValue.erase("fromaccount"); - mapValue.erase("version"); mapValue.erase("spent"); mapValue.erase("n"); mapValue.erase("timesmart"); @@ -578,7 +602,7 @@ private: class CWallet : public CCryptoKeyStore, public CValidationInterface { private: - static std::atomic<bool> fFlushThreadRunning; + static std::atomic<bool> fFlushScheduled; /** * Select a set of coins such that nValueRet >= nTargetValue and at least @@ -987,7 +1011,7 @@ public: * Wallet post-init setup * Gives the wallet a chance to register repetitive tasks and complete post-init tasks */ - void postInitProcess(boost::thread_group& threadGroup); + void postInitProcess(CScheduler& scheduler); /* Wallets parameter interaction */ static bool ParameterInteraction(); @@ -1022,6 +1046,10 @@ public: pwallet = pwalletIn; } + CReserveKey() = default; + CReserveKey(const CReserveKey&) = delete; + CReserveKey& operator=(const CReserveKey&) = delete; + ~CReserveKey() { ReturnKey(); diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp index 44a01d4a36..5ba9f150a8 100644 --- a/src/wallet/walletdb.cpp +++ b/src/wallet/walletdb.cpp @@ -546,7 +546,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue, return true; } -static bool IsKeyType(string strType) +bool CWalletDB::IsKeyType(const std::string& strType) { return (strType== "key" || strType == "wkey" || strType == "mkey" || strType == "ckey"); @@ -777,156 +777,81 @@ DBErrors CWalletDB::ZapWalletTx(vector<CWalletTx>& vWtx) return DB_LOAD_OK; } -void ThreadFlushWalletDB() +void MaybeCompactWalletDB() { - // Make this thread recognisable as the wallet flushing thread - RenameThread("bitcoin-wallet"); - - static bool fOneThread; - if (fOneThread) + static std::atomic<bool> fOneThread; + if (fOneThread.exchange(true)) { return; - fOneThread = true; - if (!GetBoolArg("-flushwallet", DEFAULT_FLUSHWALLET)) + } + if (!GetBoolArg("-flushwallet", DEFAULT_FLUSHWALLET)) { return; + } - unsigned int nLastSeen = CWalletDB::GetUpdateCounter(); - unsigned int nLastFlushed = CWalletDB::GetUpdateCounter(); - int64_t nLastWalletUpdate = GetTime(); - while (true) - { - MilliSleep(500); + static unsigned int nLastSeen = CWalletDB::GetUpdateCounter(); + static unsigned int nLastFlushed = CWalletDB::GetUpdateCounter(); + static int64_t nLastWalletUpdate = GetTime(); - if (nLastSeen != CWalletDB::GetUpdateCounter()) - { - nLastSeen = CWalletDB::GetUpdateCounter(); - nLastWalletUpdate = GetTime(); - } - - if (nLastFlushed != CWalletDB::GetUpdateCounter() && GetTime() - nLastWalletUpdate >= 2) - { - TRY_LOCK(bitdb.cs_db,lockDb); - if (lockDb) - { - // Don't do this if any databases are in use - int nRefCount = 0; - map<string, int>::iterator mi = bitdb.mapFileUseCount.begin(); - while (mi != bitdb.mapFileUseCount.end()) - { - nRefCount += (*mi).second; - mi++; - } + if (nLastSeen != CWalletDB::GetUpdateCounter()) + { + nLastSeen = CWalletDB::GetUpdateCounter(); + nLastWalletUpdate = GetTime(); + } - if (nRefCount == 0) - { - boost::this_thread::interruption_point(); - const std::string& strFile = pwalletMain->strWalletFile; - map<string, int>::iterator _mi = bitdb.mapFileUseCount.find(strFile); - if (_mi != bitdb.mapFileUseCount.end()) - { - LogPrint("db", "Flushing %s\n", strFile); - nLastFlushed = CWalletDB::GetUpdateCounter(); - int64_t nStart = GetTimeMillis(); - - // Flush wallet file so it's self contained - bitdb.CloseDb(strFile); - bitdb.CheckpointLSN(strFile); - - bitdb.mapFileUseCount.erase(_mi++); - LogPrint("db", "Flushed %s %dms\n", strFile, GetTimeMillis() - nStart); - } - } - } - } + if (nLastFlushed != CWalletDB::GetUpdateCounter() && GetTime() - nLastWalletUpdate >= 2) + { + const std::string& strFile = pwalletMain->strWalletFile; + if (CDB::PeriodicFlush(strFile)) + nLastFlushed = CWalletDB::GetUpdateCounter(); } + fOneThread = false; } // // Try to (very carefully!) recover wallet file if there is a problem. // -bool CWalletDB::Recover(CDBEnv& dbenv, const std::string& filename, bool fOnlyKeys) -{ - // Recovery procedure: - // move wallet file to wallet.timestamp.bak - // Call Salvage with fAggressive=true to - // get as much data as possible. - // Rewrite salvaged data to fresh wallet file - // Set -rescan so any missing transactions will be - // found. - int64_t now = GetTime(); - std::string newFilename = strprintf("wallet.%d.bak", now); - - int result = dbenv.dbenv->dbrename(NULL, filename.c_str(), NULL, - newFilename.c_str(), DB_AUTO_COMMIT); - if (result == 0) - LogPrintf("Renamed %s to %s\n", filename, newFilename); - else - { - LogPrintf("Failed to rename %s to %s\n", filename, newFilename); - return false; - } +bool CWalletDB::Recover(const std::string& filename, void *callbackDataIn, bool (*recoverKVcallback)(void* callbackData, CDataStream ssKey, CDataStream ssValue)) +{ + return CDB::Recover(filename, callbackDataIn, recoverKVcallback); +} + +bool CWalletDB::Recover(const std::string& filename) +{ + // recover without a key filter callback + // results in recovering all record types + return CWalletDB::Recover(filename, NULL, NULL); +} - std::vector<CDBEnv::KeyValPair> salvagedData; - bool fSuccess = dbenv.Salvage(newFilename, true, salvagedData); - if (salvagedData.empty()) +bool CWalletDB::RecoverKeysOnlyFilter(void *callbackData, CDataStream ssKey, CDataStream ssValue) +{ + CWallet *dummyWallet = reinterpret_cast<CWallet*>(callbackData); + CWalletScanState dummyWss; + std::string strType, strErr; + bool fReadOK; { - LogPrintf("Salvage(aggressive) found no records in %s.\n", newFilename); - return false; + // Required in LoadKeyMetadata(): + LOCK(dummyWallet->cs_wallet); + fReadOK = ReadKeyValue(dummyWallet, ssKey, ssValue, + dummyWss, strType, strErr); } - LogPrintf("Salvage(aggressive) found %u records\n", salvagedData.size()); - - std::unique_ptr<Db> pdbCopy(new Db(dbenv.dbenv, 0)); - int ret = pdbCopy->open(NULL, // Txn pointer - filename.c_str(), // Filename - "main", // Logical db name - DB_BTREE, // Database type - DB_CREATE, // Flags - 0); - if (ret > 0) + if (!IsKeyType(strType) && strType != "hdchain") + return false; + if (!fReadOK) { - LogPrintf("Cannot create database file %s\n", filename); + LogPrintf("WARNING: CWalletDB::Recover skipping %s: %s\n", strType, strErr); return false; } - CWallet dummyWallet; - CWalletScanState wss; - DbTxn* ptxn = dbenv.TxnBegin(); - BOOST_FOREACH(CDBEnv::KeyValPair& row, salvagedData) - { - if (fOnlyKeys) - { - CDataStream ssKey(row.first, SER_DISK, CLIENT_VERSION); - CDataStream ssValue(row.second, SER_DISK, CLIENT_VERSION); - string strType, strErr; - bool fReadOK; - { - // Required in LoadKeyMetadata(): - LOCK(dummyWallet.cs_wallet); - fReadOK = ReadKeyValue(&dummyWallet, ssKey, ssValue, - wss, strType, strErr); - } - if (!IsKeyType(strType) && strType != "hdchain") - continue; - if (!fReadOK) - { - LogPrintf("WARNING: CWalletDB::Recover skipping %s: %s\n", strType, strErr); - continue; - } - } - Dbt datKey(&row.first[0], row.first.size()); - Dbt datValue(&row.second[0], row.second.size()); - int ret2 = pdbCopy->put(ptxn, &datKey, &datValue, DB_NOOVERWRITE); - if (ret2 > 0) - fSuccess = false; - } - ptxn->commit(0); - pdbCopy->close(0); + return true; +} - return fSuccess; +bool CWalletDB::VerifyEnvironment(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& errorStr) +{ + return CDB::VerifyEnvironment(walletFile, dataDir, errorStr); } -bool CWalletDB::Recover(CDBEnv& dbenv, const std::string& filename) +bool CWalletDB::VerifyDatabaseFile(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& warningStr, std::string& errorStr) { - return CWalletDB::Recover(dbenv, filename, false); + return CDB::VerifyDatabaseFile(walletFile, dataDir, errorStr, warningStr, CWalletDB::Recover); } bool CWalletDB::WriteDestData(const std::string &address, const std::string &key, const std::string &value) diff --git a/src/wallet/walletdb.h b/src/wallet/walletdb.h index 2d95df91da..2e9899acc6 100644 --- a/src/wallet/walletdb.h +++ b/src/wallet/walletdb.h @@ -170,8 +170,18 @@ public: DBErrors FindWalletTx(std::vector<uint256>& vTxHash, std::vector<CWalletTx>& vWtx); DBErrors ZapWalletTx(std::vector<CWalletTx>& vWtx); DBErrors ZapSelectTx(std::vector<uint256>& vHashIn, std::vector<uint256>& vHashOut); - static bool Recover(CDBEnv& dbenv, const std::string& filename, bool fOnlyKeys); - static bool Recover(CDBEnv& dbenv, const std::string& filename); + /* Try to (very carefully!) recover wallet database (with a possible key type filter) */ + static bool Recover(const std::string& filename, void *callbackDataIn, bool (*recoverKVcallback)(void* callbackData, CDataStream ssKey, CDataStream ssValue)); + /* Recover convenience-function to bypass the key filter callback, called when verify failes, recoveres everything */ + static bool Recover(const std::string& filename); + /* Recover filter (used as callback), will only let keys (cryptographical keys) as KV/key-type pass through */ + static bool RecoverKeysOnlyFilter(void *callbackData, CDataStream ssKey, CDataStream ssValue); + /* Function to determin if a certain KV/key-type is a key (cryptographical key) type */ + static bool IsKeyType(const std::string& strType); + /* verifies the database environment */ + static bool VerifyEnvironment(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& errorStr); + /* verifies the database file */ + static bool VerifyDatabaseFile(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& warningStr, std::string& errorStr); //! write the hdchain model (external chain child index counter) bool WriteHDChain(const CHDChain& chain); @@ -183,6 +193,7 @@ private: void operator=(const CWalletDB&); }; -void ThreadFlushWalletDB(); +//! Compacts BDB state so that wallet.dat is self-contained (if there are changes) +void MaybeCompactWalletDB(); #endif // BITCOIN_WALLET_WALLETDB_H |