// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "db.h"
+#include "net.h"
#include "util.h"
#include "main.h"
-#include <boost/version.hpp>
+#include "ui_interface.h"
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
unsigned int nWalletDBUpdated;
-
+extern bool fUseMemoryLog;
//
// CDB
//
-CCriticalSection cs_db;
-static bool fDbEnvInit = false;
-bool fDetachDB = false;
-DbEnv dbenv(0);
-map<string, int> mapFileUseCount;
-static map<string, Db*> mapDb;
+CDBEnv bitdb;
-static void EnvShutdown()
+void CDBEnv::EnvShutdown()
{
if (!fDbEnvInit)
return;
fDbEnvInit = false;
- try
- {
- dbenv.close(0);
- }
- catch (const DbException& e)
+ int ret = dbenv.close(0);
+ if (ret != 0)
+ printf("EnvShutdown exception: %s (%d)\n", DbEnv::strerror(ret), ret);
+ if (!fMockDb)
+ DbEnv(0).remove(strPath.c_str(), 0);
+}
+
+CDBEnv::CDBEnv() : fDetachDB(false), fDbEnvInit(false), fMockDb(false), dbenv(DB_CXX_NO_EXCEPTIONS) { }
+
+CDBEnv::~CDBEnv()
+{
+ EnvShutdown();
+}
+
+void CDBEnv::Close()
+{
+ EnvShutdown();
+}
+
+bool CDBEnv::Open(boost::filesystem::path pathEnv_)
+{
+ if (fDbEnvInit)
+ return true;
+
+ if (fShutdown)
+ return false;
+
+ pathEnv = pathEnv_;
+ filesystem::path pathDataDir = pathEnv;
+ strPath = pathDataDir.string();
+ filesystem::path pathLogDir = pathDataDir / "database";
+ filesystem::create_directory(pathLogDir);
+ filesystem::path pathErrorFile = pathDataDir / "db.log";
+ printf("dbenv.open LogDir=%s ErrorFile=%s\n", pathLogDir.string().c_str(), pathErrorFile.string().c_str());
+
+ unsigned int nEnvFlags = 0;
+ if (GetBoolArg("-privdb", true))
+ nEnvFlags |= DB_PRIVATE;
+
+ int nDbCache = GetArgInt("-dbcache", 25);
+ dbenv.set_lg_dir(pathLogDir.string().c_str());
+ dbenv.set_cachesize(nDbCache / 1024, (nDbCache % 1024)*1048576, 1);
+ dbenv.set_lg_bsize(1048576);
+ dbenv.set_lg_max(10485760);
+
+ // Bugfix: Bump lk_max_locks default to 537000, to safely handle reorgs with up to 5 blocks reversed
+ // dbenv.set_lk_max_locks(10000);
+ dbenv.set_lk_max_locks(537000);
+
+ dbenv.set_lk_max_objects(10000);
+ dbenv.set_errfile(fopen(pathErrorFile.string().c_str(), "a")); /// debug
+ dbenv.set_flags(DB_AUTO_COMMIT, 1);
+ dbenv.set_flags(DB_TXN_WRITE_NOSYNC, 1);
+#ifdef DB_LOG_AUTO_REMOVE
+ dbenv.log_set_config(DB_LOG_AUTO_REMOVE, 1);
+#endif
+ int ret = dbenv.open(strPath.c_str(),
+ DB_CREATE |
+ DB_INIT_LOCK |
+ DB_INIT_LOG |
+ DB_INIT_MPOOL |
+ DB_INIT_TXN |
+ DB_THREAD |
+ DB_RECOVER |
+ nEnvFlags,
+ S_IRUSR | S_IWUSR);
+ if (ret != 0)
+ return error("CDB() : error %s (%d) opening database environment", DbEnv::strerror(ret), ret);
+
+ fDbEnvInit = true;
+ fMockDb = false;
+
+#ifndef USE_LEVELDB
+ // Check that the number of locks is sufficient (to prevent chain fork possibility, read http://bitcoin.org/may15 for more info)
+ u_int32_t nMaxLocks;
+ if (!dbenv.get_lk_max_locks(&nMaxLocks))
{
- printf("EnvShutdown exception: %s (%d)\n", e.what(), e.get_errno());
+ int nBlocks, nDeepReorg;
+ std::string strMessage;
+
+ nBlocks = nMaxLocks / 48768;
+ nDeepReorg = (nBlocks - 1) / 2;
+
+ printf("Final lk_max_locks is %u, sufficient for (worst case) %d block%s in a single transaction (up to a %d-deep reorganization)\n", nMaxLocks, nBlocks, (nBlocks == 1) ? "" : "s", nDeepReorg);
+ if (nDeepReorg < 3)
+ {
+ if (nBlocks < 1)
+ strMessage = strprintf(_("Warning: DB_CONFIG has set_lk_max_locks %u, which may be too low for a single block. If this limit is reached, NovaCoin may stop working."), nMaxLocks);
+ else
+ strMessage = strprintf(_("Warning: DB_CONFIG has set_lk_max_locks %u, which may be too low for a common blockchain reorganization. If this limit is reached, NovaCoin may stop working."), nMaxLocks);
+
+ strMiscWarning = strMessage;
+ printf("*** %s\n", strMessage.c_str());
+ }
}
- DbEnv(0).remove(GetDataDir().string().c_str(), 0);
+#endif
+
+ return true;
}
-class CDBInit
+void CDBEnv::MakeMock()
{
-public:
- CDBInit()
+ if (fDbEnvInit)
+ throw runtime_error("CDBEnv::MakeMock(): already initialized");
+
+ if (fShutdown)
+ throw runtime_error("CDBEnv::MakeMock(): during shutdown");
+
+ printf("CDBEnv::MakeMock()\n");
+
+ dbenv.set_cachesize(1, 0, 1);
+ dbenv.set_lg_bsize(10485760*4);
+ dbenv.set_lg_max(10485760);
+ dbenv.set_lk_max_locks(10000);
+ dbenv.set_lk_max_objects(10000);
+ dbenv.set_flags(DB_AUTO_COMMIT, 1);
+#ifdef DB_LOG_IN_MEMORY
+ dbenv.log_set_config(DB_LOG_IN_MEMORY, fUseMemoryLog ? 1 : 0);
+#endif
+ int ret = dbenv.open(NULL,
+ DB_CREATE |
+ DB_INIT_LOCK |
+ DB_INIT_LOG |
+ DB_INIT_MPOOL |
+ DB_INIT_TXN |
+ DB_THREAD |
+ DB_PRIVATE,
+ S_IRUSR | S_IWUSR);
+ if (ret > 0)
+ throw runtime_error(strprintf("CDBEnv::MakeMock(): error %d opening database environment", ret));
+
+ fDbEnvInit = true;
+ fMockDb = true;
+}
+
+CDBEnv::VerifyResult CDBEnv::Verify(std::string strFile, bool (*recoverFunc)(CDBEnv& dbenv, std::string strFile))
+{
+ LOCK(cs_db);
+ assert(mapFileUseCount.count(strFile) == 0);
+
+ Db db(&dbenv, 0);
+ int result = db.verify(strFile.c_str(), NULL, NULL, 0);
+ if (result == 0)
+ return VERIFY_OK;
+ else if (recoverFunc == NULL)
+ return RECOVER_FAIL;
+
+ // Try to recover:
+ bool fRecovered = (*recoverFunc)(*this, strFile);
+ return (fRecovered ? RECOVER_OK : RECOVER_FAIL);
+}
+
+bool CDBEnv::Salvage(std::string strFile, bool fAggressive,
+ std::vector<CDBEnv::KeyValPair >& vResult)
+{
+ LOCK(cs_db);
+ assert(mapFileUseCount.count(strFile) == 0);
+
+ u_int32_t flags = DB_SALVAGE;
+ if (fAggressive) flags |= DB_AGGRESSIVE;
+
+ stringstream strDump;
+
+ Db db(&dbenv, 0);
+ int result = db.verify(strFile.c_str(), NULL, &strDump, flags);
+ if (result != 0)
{
+ printf("ERROR: db salvage failed\n");
+ return false;
}
- ~CDBInit()
+
+ // Format of bdb dump is ascii lines:
+ // header lines...
+ // HEADER=END
+ // hexadecimal key
+ // hexadecimal value
+ // ... repeated
+ // DATA=END
+
+ string strLine;
+ while (!strDump.eof() && strLine != "HEADER=END")
+ getline(strDump, strLine); // Skip past header
+
+ std::string keyHex, valueHex;
+ while (!strDump.eof() && keyHex != "DATA=END")
{
- EnvShutdown();
+ getline(strDump, keyHex);
+ if (keyHex != "DATA=END")
+ {
+ getline(strDump, valueHex);
+ vResult.push_back(make_pair(ParseHex(keyHex),ParseHex(valueHex)));
+ }
}
+
+ return (result == 0);
+}
+
+
+void CDBEnv::CheckpointLSN(std::string strFile)
+{
+ dbenv.txn_checkpoint(0, 0, 0);
+ if (fMockDb)
+ return;
+ dbenv.lsn_reset(strFile.c_str(), 0);
}
-instance_of_cdbinit;
-CDB::CDB(const char *pszFile, const char* pszMode) : pdb(NULL)
+CDB::CDB(const char *pszFile, const char* pszMode) :
+ pdb(NULL), activeTxn(NULL)
{
int ret;
if (pszFile == NULL)
return;
fReadOnly = (!strchr(pszMode, '+') && !strchr(pszMode, 'w'));
- bool fCreate = strchr(pszMode, 'c');
+ bool fCreate = strchr(pszMode, 'c') != NULL;
unsigned int nFlags = DB_THREAD;
if (fCreate)
nFlags |= DB_CREATE;
{
- LOCK(cs_db);
- if (!fDbEnvInit)
- {
- if (fShutdown)
- return;
- filesystem::path pathDataDir = GetDataDir();
- filesystem::path pathLogDir = pathDataDir / "database";
- filesystem::create_directory(pathLogDir);
- filesystem::path pathErrorFile = pathDataDir / "db.log";
- printf("dbenv.open LogDir=%s ErrorFile=%s\n", pathLogDir.string().c_str(), pathErrorFile.string().c_str());
-
- int nDbCache = GetArg("-dbcache", 25);
- dbenv.set_lg_dir(pathLogDir.string().c_str());
- dbenv.set_cachesize(nDbCache / 1024, (nDbCache % 1024)*1048576, 1);
- dbenv.set_lg_bsize(1048576);
- dbenv.set_lg_max(10485760);
- dbenv.set_lk_max_locks(10000);
- dbenv.set_lk_max_objects(10000);
- dbenv.set_errfile(fopen(pathErrorFile.string().c_str(), "a")); /// debug
- dbenv.set_flags(DB_TXN_WRITE_NOSYNC, 1);
- dbenv.set_flags(DB_AUTO_COMMIT, 1);
- dbenv.log_set_config(DB_LOG_AUTO_REMOVE, 1);
- ret = dbenv.open(pathDataDir.string().c_str(),
- DB_CREATE |
- DB_INIT_LOCK |
- DB_INIT_LOG |
- DB_INIT_MPOOL |
- DB_INIT_TXN |
- DB_THREAD |
- DB_RECOVER,
- S_IRUSR | S_IWUSR);
- if (ret > 0)
- throw runtime_error(strprintf("CDB() : error %d opening database environment", ret));
- fDbEnvInit = true;
- }
+ LOCK(bitdb.cs_db);
+ if (!bitdb.Open(GetDataDir()))
+ throw runtime_error("env open failed");
strFile = pszFile;
- ++mapFileUseCount[strFile];
- pdb = mapDb[strFile];
+ ++bitdb.mapFileUseCount[strFile];
+ pdb = bitdb.mapDb[strFile];
if (pdb == NULL)
{
- pdb = new Db(&dbenv, 0);
+ pdb = new Db(&bitdb.dbenv, 0);
+
+ bool fMockDb = bitdb.IsMock();
+ if (fMockDb)
+ {
+ DbMpoolFile*mpf = pdb->get_mpf();
+ ret = mpf->set_flags(DB_MPOOL_NOFILE, 1);
+ if (ret != 0)
+ throw runtime_error(strprintf("CDB() : failed to configure for no temp file backing for database %s", pszFile));
+ }
ret = pdb->open(NULL, // Txn pointer
- pszFile, // Filename
+ fMockDb ? NULL : pszFile, // Filename
"main", // Logical db name
DB_BTREE, // Database type
nFlags, // Flags
0);
- if (ret > 0)
+ if (ret != 0)
{
delete pdb;
pdb = NULL;
- {
- LOCK(cs_db);
- --mapFileUseCount[strFile];
- }
- strFile = "";
+ --bitdb.mapFileUseCount[strFile];
+ strFile.clear();
throw runtime_error(strprintf("CDB() : can't open database file %s, error %d", pszFile, ret));
}
fReadOnly = fTmp;
}
- mapDb[strFile] = pdb;
+ bitdb.mapDb[strFile] = pdb;
}
}
}
+static bool IsChainFile(std::string strFile)
+{
+ if (strFile == "blkindex.dat")
+ return true;
+
+ return false;
+}
+
void CDB::Close()
{
if (!pdb)
return;
- if (!vTxn.empty())
- vTxn.front()->abort();
- vTxn.clear();
+ if (activeTxn)
+ activeTxn->abort();
+ activeTxn = NULL;
pdb = NULL;
// Flush database activity from memory pool to disk log
unsigned int nMinutes = 0;
if (fReadOnly)
nMinutes = 1;
- if (strFile == "addr.dat")
- nMinutes = 2;
- if (strFile == "blkindex.dat")
+ if (IsChainFile(strFile))
nMinutes = 2;
- if (strFile == "blkindex.dat" && IsInitialBlockDownload())
+ if (IsChainFile(strFile) && IsInitialBlockDownload())
nMinutes = 5;
- dbenv.txn_checkpoint(nMinutes ? GetArg("-dblogsize", 100)*1024 : 0, nMinutes, 0);
+ bitdb.dbenv.txn_checkpoint(nMinutes ? GetArgUInt("-dblogsize", 100)*1024 : 0, nMinutes, 0);
{
- LOCK(cs_db);
- --mapFileUseCount[strFile];
+ LOCK(bitdb.cs_db);
+ --bitdb.mapFileUseCount[strFile];
}
}
-void CloseDb(const string& strFile)
+void CDBEnv::CloseDb(const string& strFile)
{
{
LOCK(cs_db);
}
}
+bool CDBEnv::RemoveDb(const string& strFile)
+{
+ this->CloseDb(strFile);
+
+ LOCK(cs_db);
+ int rc = dbenv.dbremove(NULL, strFile.c_str(), NULL, DB_AUTO_COMMIT);
+ return (rc == 0);
+}
+
bool CDB::Rewrite(const string& strFile, const char* pszSkip)
{
while (!fShutdown)
{
{
- LOCK(cs_db);
- if (!mapFileUseCount.count(strFile) || mapFileUseCount[strFile] == 0)
+ LOCK(bitdb.cs_db);
+ if (!bitdb.mapFileUseCount.count(strFile) || bitdb.mapFileUseCount[strFile] == 0)
{
// Flush log data to the dat file
- CloseDb(strFile);
- dbenv.txn_checkpoint(0, 0, 0);
- dbenv.lsn_reset(strFile.c_str(), 0);
- mapFileUseCount.erase(strFile);
+ bitdb.CloseDb(strFile);
+ bitdb.CheckpointLSN(strFile);
+ bitdb.mapFileUseCount.erase(strFile);
bool fSuccess = true;
printf("Rewriting %s...\n", strFile.c_str());
string strFileRes = strFile + ".rewrite";
{ // surround usage of db with extra {}
CDB db(strFile.c_str(), "r");
- Db* pdbCopy = new Db(&dbenv, 0);
-
+ Db* pdbCopy = new Db(&bitdb.dbenv, 0);
+
int ret = pdbCopy->open(NULL, // Txn pointer
strFileRes.c_str(), // Filename
"main", // Logical db name
printf("Cannot create database file %s\n", strFileRes.c_str());
fSuccess = false;
}
-
+
Dbc* pcursor = db.GetCursor();
- if (pcursor)
+ if (pcursor) {
while (fSuccess)
{
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
fSuccess = false;
break;
}
- if (pszSkip &&
- strncmp(&ssKey[0], pszSkip, std::min(ssKey.size(), strlen(pszSkip))) == 0)
- continue;
+
+ if (pszSkip != NULL)
+ {
+ size_t pszSkipLen = strlen(pszSkip);
+ if (strncmp(&ssKey[0], pszSkip, std::min(ssKey.size(), pszSkipLen)) == 0)
+ continue;
+ }
+
if (strncmp(&ssKey[0], "\x07version", 8) == 0)
{
// Update version:
if (ret2 > 0)
fSuccess = false;
}
+ }
if (fSuccess)
{
db.Close();
- CloseDb(strFile);
+ bitdb.CloseDb(strFile);
if (pdbCopy->close(0))
fSuccess = false;
delete pdbCopy;
}
if (fSuccess)
{
- Db dbA(&dbenv, 0);
+ Db dbA(&bitdb.dbenv, 0);
if (dbA.remove(strFile.c_str(), NULL, 0))
fSuccess = false;
- Db dbB(&dbenv, 0);
+ Db dbB(&bitdb.dbenv, 0);
if (dbB.rename(strFileRes.c_str(), NULL, strFile.c_str(), 0))
fSuccess = false;
}
}
-void DBFlush(bool fShutdown)
+void CDBEnv::Flush(bool fShutdown)
{
+ int64_t nStart = GetTimeMillis();
// Flush log data to the actual data file
// on all files that are not in use
- printf("DBFlush(%s)%s\n", fShutdown ? "true" : "false", fDbEnvInit ? "" : " db not started");
+ printf("Flush(%s)%s\n", fShutdown ? "true" : "false", fDbEnvInit ? "" : " db not started");
if (!fDbEnvInit)
return;
{
CloseDb(strFile);
printf("%s checkpoint\n", strFile.c_str());
dbenv.txn_checkpoint(0, 0, 0);
- if ((strFile != "blkindex.dat" && strFile != "addr.dat") || fDetachDB) {
+ if (!IsChainFile(strFile) || fDetachDB) {
printf("%s detach\n", strFile.c_str());
- dbenv.lsn_reset(strFile.c_str(), 0);
+ if (!fMockDb)
+ dbenv.lsn_reset(strFile.c_str(), 0);
}
printf("%s closed\n", strFile.c_str());
mapFileUseCount.erase(mi++);
else
mi++;
}
+ printf("DBFlush(%s)%s ended %15" PRId64 "ms\n", fShutdown ? "true" : "false", fDbEnvInit ? "" : " db not started", GetTimeMillis() - nStart);
if (fShutdown)
{
char** listp;
if (mapFileUseCount.empty())
{
dbenv.log_archive(&listp, DB_ARCH_REMOVE);
- EnvShutdown();
+ Close();
}
}
}
}
-
-
-
-
//
-// CTxDB
+// CAddrDB
//
-bool CTxDB::ReadTxIndex(uint256 hash, CTxIndex& txindex)
-{
- assert(!fClient);
- txindex.SetNull();
- return Read(make_pair(string("tx"), hash), txindex);
-}
-
-bool CTxDB::UpdateTxIndex(uint256 hash, const CTxIndex& txindex)
-{
- assert(!fClient);
- return Write(make_pair(string("tx"), hash), txindex);
-}
-
-bool CTxDB::AddTxIndex(const CTransaction& tx, const CDiskTxPos& pos, int nHeight)
-{
- assert(!fClient);
- // Add to tx index
- uint256 hash = tx.GetHash();
- CTxIndex txindex(pos, tx.vout.size());
- return Write(make_pair(string("tx"), hash), txindex);
-}
-
-bool CTxDB::EraseTxIndex(const CTransaction& tx)
+CAddrDB::CAddrDB()
{
- assert(!fClient);
- uint256 hash = tx.GetHash();
-
- return Erase(make_pair(string("tx"), hash));
+ pathAddr = GetDataDir() / "peers.dat";
}
-bool CTxDB::ContainsTx(uint256 hash)
+bool CAddrDB::Write(const CAddrMan& addr)
{
- assert(!fClient);
- return Exists(make_pair(string("tx"), hash));
-}
-
-bool CTxDB::ReadOwnerTxes(uint160 hash160, int nMinHeight, vector<CTransaction>& vtx)
-{
- assert(!fClient);
- vtx.clear();
-
- // Get cursor
- Dbc* pcursor = GetCursor();
- if (!pcursor)
- return false;
-
- unsigned int fFlags = DB_SET_RANGE;
- loop
- {
- // Read next record
- CDataStream ssKey(SER_DISK, CLIENT_VERSION);
- if (fFlags == DB_SET_RANGE)
- ssKey << string("owner") << hash160 << CDiskTxPos(0, 0, 0);
- CDataStream ssValue(SER_DISK, CLIENT_VERSION);
- int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
- fFlags = DB_NEXT;
- if (ret == DB_NOTFOUND)
- break;
- else if (ret != 0)
- {
- pcursor->close();
- return false;
- }
-
- // Unserialize
- string strType;
- uint160 hashItem;
- CDiskTxPos pos;
- int nItemHeight;
-
- try {
- ssKey >> strType >> hashItem >> pos;
- ssValue >> nItemHeight;
- }
- catch (std::exception &e) {
- return error("%s() : deserialize error", __PRETTY_FUNCTION__);
- }
-
- // Read transaction
- if (strType != "owner" || hashItem != hash160)
- break;
- if (nItemHeight >= nMinHeight)
- {
- vtx.resize(vtx.size()+1);
- if (!vtx.back().ReadFromDisk(pos))
- {
- pcursor->close();
- return false;
- }
- }
+ // Generate random temporary filename
+ unsigned short randv = 0;
+ RAND_bytes((unsigned char *)&randv, sizeof(randv));
+ std::string tmpfn = strprintf("peers.dat.%04x", randv);
+
+ // serialize addresses, checksum data up to that point, then append csum
+ CDataStream ssPeers(SER_DISK, CLIENT_VERSION);
+ ssPeers << FLATDATA(pchMessageStart);
+ ssPeers << addr;
+ uint256 hash = Hash(ssPeers.begin(), ssPeers.end());
+ ssPeers << hash;
+
+ // open temp output file, and associate with CAutoFile
+ boost::filesystem::path pathTmp = GetDataDir() / tmpfn;
+ FILE *file = fopen(pathTmp.string().c_str(), "wb");
+ CAutoFile fileout = CAutoFile(file, SER_DISK, CLIENT_VERSION);
+ if (!fileout)
+ return error("CAddrman::Write() : open failed");
+
+ // Write and commit header, data
+ try {
+ fileout << ssPeers;
}
+ catch (const std::exception&) {
+ return error("CAddrman::Write() : I/O error");
+ }
+ FileCommit(fileout);
+ fileout.fclose();
- pcursor->close();
- return true;
-}
-
-bool CTxDB::ReadDiskTx(uint256 hash, CTransaction& tx, CTxIndex& txindex)
-{
- assert(!fClient);
- tx.SetNull();
- if (!ReadTxIndex(hash, txindex))
- return false;
- return (tx.ReadFromDisk(txindex.pos));
-}
-
-bool CTxDB::ReadDiskTx(uint256 hash, CTransaction& tx)
-{
- CTxIndex txindex;
- return ReadDiskTx(hash, tx, txindex);
-}
-
-bool CTxDB::ReadDiskTx(COutPoint outpoint, CTransaction& tx, CTxIndex& txindex)
-{
- return ReadDiskTx(outpoint.hash, tx, txindex);
-}
-
-bool CTxDB::ReadDiskTx(COutPoint outpoint, CTransaction& tx)
-{
- CTxIndex txindex;
- return ReadDiskTx(outpoint.hash, tx, txindex);
-}
-
-bool CTxDB::WriteBlockIndex(const CDiskBlockIndex& blockindex)
-{
- return Write(make_pair(string("blockindex"), blockindex.GetBlockHash()), blockindex);
-}
-
-bool CTxDB::EraseBlockIndex(uint256 hash)
-{
- return Erase(make_pair(string("blockindex"), hash));
-}
-
-bool CTxDB::ReadHashBestChain(uint256& hashBestChain)
-{
- return Read(string("hashBestChain"), hashBestChain);
-}
-
-bool CTxDB::WriteHashBestChain(uint256 hashBestChain)
-{
- return Write(string("hashBestChain"), hashBestChain);
-}
-
-bool CTxDB::ReadBestInvalidWork(CBigNum& bnBestInvalidWork)
-{
- return Read(string("bnBestInvalidWork"), bnBestInvalidWork);
-}
-
-bool CTxDB::WriteBestInvalidWork(CBigNum bnBestInvalidWork)
-{
- return Write(string("bnBestInvalidWork"), bnBestInvalidWork);
-}
+ // replace existing peers.dat, if any, with new peers.dat.XXXX
+ if (!RenameOver(pathTmp, pathAddr))
+ return error("CAddrman::Write() : Rename-into-place failed");
-CBlockIndex static * InsertBlockIndex(uint256 hash)
-{
- if (hash == 0)
- return NULL;
-
- // Return existing
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
- if (mi != mapBlockIndex.end())
- return (*mi).second;
-
- // Create new
- CBlockIndex* pindexNew = new CBlockIndex();
- if (!pindexNew)
- throw runtime_error("LoadBlockIndex() : new CBlockIndex failed");
- mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
- pindexNew->phashBlock = &((*mi).first);
-
- return pindexNew;
+ return true;
}
-bool CTxDB::LoadBlockIndex()
+bool CAddrDB::Read(CAddrMan& addr)
{
- // Get database cursor
- Dbc* pcursor = GetCursor();
- if (!pcursor)
- return false;
-
- // Load mapBlockIndex
- unsigned int fFlags = DB_SET_RANGE;
- loop
- {
- // Read next record
- CDataStream ssKey(SER_DISK, CLIENT_VERSION);
- if (fFlags == DB_SET_RANGE)
- ssKey << make_pair(string("blockindex"), uint256(0));
- CDataStream ssValue(SER_DISK, CLIENT_VERSION);
- int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
- fFlags = DB_NEXT;
- if (ret == DB_NOTFOUND)
- break;
- else if (ret != 0)
- return false;
-
- // Unserialize
-
- try {
- string strType;
- ssKey >> strType;
- if (strType == "blockindex" && !fRequestShutdown)
- {
- CDiskBlockIndex diskindex;
- ssValue >> diskindex;
-
- // Construct block index object
- CBlockIndex* pindexNew = InsertBlockIndex(diskindex.GetBlockHash());
- pindexNew->pprev = InsertBlockIndex(diskindex.hashPrev);
- pindexNew->pnext = InsertBlockIndex(diskindex.hashNext);
- pindexNew->nFile = diskindex.nFile;
- pindexNew->nBlockPos = diskindex.nBlockPos;
- pindexNew->nHeight = diskindex.nHeight;
- pindexNew->nVersion = diskindex.nVersion;
- pindexNew->hashMerkleRoot = diskindex.hashMerkleRoot;
- pindexNew->nTime = diskindex.nTime;
- pindexNew->nBits = diskindex.nBits;
- pindexNew->nNonce = diskindex.nNonce;
-
- // Watch for genesis block
- if (pindexGenesisBlock == NULL && diskindex.GetBlockHash() == hashGenesisBlock)
- pindexGenesisBlock = pindexNew;
-
- if (!pindexNew->CheckIndex())
- return error("LoadBlockIndex() : CheckIndex failed at %d", pindexNew->nHeight);
- }
- else
- {
- break; // if shutdown requested or finished loading block index
- }
- } // try
- catch (std::exception &e) {
- return error("%s() : deserialize error", __PRETTY_FUNCTION__);
- }
+ // open input file, and associate with CAutoFile
+ FILE *file = fopen(pathAddr.string().c_str(), "rb");
+ CAutoFile filein = CAutoFile(file, SER_DISK, CLIENT_VERSION);
+ if (!filein)
+ return error("CAddrman::Read() : open failed");
+
+ // use file size to size memory buffer
+ int fileSize = GetFilesize(filein);
+ int dataSize = fileSize - sizeof(uint256);
+ //Don't try to resize to a negative number if file is small
+ if ( dataSize < 0 ) dataSize = 0;
+ vector<unsigned char> vchData;
+ vchData.resize(dataSize);
+ uint256 hashIn;
+
+ // read data and checksum from file
+ try {
+ filein.read((char *)&vchData[0], dataSize);
+ filein >> hashIn;
}
- pcursor->close();
-
- if (fRequestShutdown)
- return true;
-
- // Calculate bnChainWork
- vector<pair<int, CBlockIndex*> > vSortedByHeight;
- vSortedByHeight.reserve(mapBlockIndex.size());
- BOOST_FOREACH(const PAIRTYPE(uint256, CBlockIndex*)& item, mapBlockIndex)
- {
- CBlockIndex* pindex = item.second;
- vSortedByHeight.push_back(make_pair(pindex->nHeight, pindex));
- }
- sort(vSortedByHeight.begin(), vSortedByHeight.end());
- BOOST_FOREACH(const PAIRTYPE(int, CBlockIndex*)& item, vSortedByHeight)
- {
- CBlockIndex* pindex = item.second;
- pindex->bnChainWork = (pindex->pprev ? pindex->pprev->bnChainWork : 0) + pindex->GetBlockWork();
+ catch (const std::exception&) {
+ return error("CAddrman::Read() 2 : I/O error or stream data corrupted");
}
+ filein.fclose();
- // Load hashBestChain pointer to end of best chain
- if (!ReadHashBestChain(hashBestChain))
- {
- if (pindexGenesisBlock == NULL)
- return true;
- return error("CTxDB::LoadBlockIndex() : hashBestChain not loaded");
- }
- if (!mapBlockIndex.count(hashBestChain))
- return error("CTxDB::LoadBlockIndex() : hashBestChain not found in the block index");
- pindexBest = mapBlockIndex[hashBestChain];
- nBestHeight = pindexBest->nHeight;
- bnBestChainWork = pindexBest->bnChainWork;
- printf("LoadBlockIndex(): hashBestChain=%s height=%d\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight);
-
- // Load bnBestInvalidWork, OK if it doesn't exist
- ReadBestInvalidWork(bnBestInvalidWork);
-
- // Verify blocks in the best chain
- int nCheckLevel = GetArg("-checklevel", 1);
- int nCheckDepth = GetArg( "-checkblocks", 2500);
- if (nCheckDepth == 0)
- nCheckDepth = 1000000000; // suffices until the year 19000
- if (nCheckDepth > nBestHeight)
- nCheckDepth = nBestHeight;
- printf("Verifying last %i blocks at level %i\n", nCheckDepth, nCheckLevel);
- CBlockIndex* pindexFork = NULL;
- map<pair<unsigned int, unsigned int>, CBlockIndex*> mapBlockPos;
- for (CBlockIndex* pindex = pindexBest; pindex && pindex->pprev; pindex = pindex->pprev)
- {
- if (pindex->nHeight < nBestHeight-nCheckDepth)
- break;
- CBlock block;
- if (!block.ReadFromDisk(pindex))
- return error("LoadBlockIndex() : block.ReadFromDisk failed");
- // check level 1: verify block validity
- if (nCheckLevel>0 && !block.CheckBlock())
- {
- printf("LoadBlockIndex() : *** found bad block at %d, hash=%s\n", pindex->nHeight, pindex->GetBlockHash().ToString().c_str());
- pindexFork = pindex->pprev;
- }
- // check level 2: verify transaction index validity
- if (nCheckLevel>1)
- {
- pair<unsigned int, unsigned int> pos = make_pair(pindex->nFile, pindex->nBlockPos);
- mapBlockPos[pos] = pindex;
- BOOST_FOREACH(const CTransaction &tx, block.vtx)
- {
- uint256 hashTx = tx.GetHash();
- CTxIndex txindex;
- if (ReadTxIndex(hashTx, txindex))
- {
- // check level 3: checker transaction hashes
- if (nCheckLevel>2 || pindex->nFile != txindex.pos.nFile || pindex->nBlockPos != txindex.pos.nBlockPos)
- {
- // either an error or a duplicate transaction
- CTransaction txFound;
- if (!txFound.ReadFromDisk(txindex.pos))
- {
- printf("LoadBlockIndex() : *** cannot read mislocated transaction %s\n", hashTx.ToString().c_str());
- pindexFork = pindex->pprev;
- }
- else
- if (txFound.GetHash() != hashTx) // not a duplicate tx
- {
- printf("LoadBlockIndex(): *** invalid tx position for %s\n", hashTx.ToString().c_str());
- pindexFork = pindex->pprev;
- }
- }
- // check level 4: check whether spent txouts were spent within the main chain
- unsigned int nOutput = 0;
- if (nCheckLevel>3)
- {
- BOOST_FOREACH(const CDiskTxPos &txpos, txindex.vSpent)
- {
- if (!txpos.IsNull())
- {
- pair<unsigned int, unsigned int> posFind = make_pair(txpos.nFile, txpos.nBlockPos);
- if (!mapBlockPos.count(posFind))
- {
- printf("LoadBlockIndex(): *** found bad spend at %d, hashBlock=%s, hashTx=%s\n", pindex->nHeight, pindex->GetBlockHash().ToString().c_str(), hashTx.ToString().c_str());
- pindexFork = pindex->pprev;
- }
- // check level 6: check whether spent txouts were spent by a valid transaction that consume them
- if (nCheckLevel>5)
- {
- CTransaction txSpend;
- if (!txSpend.ReadFromDisk(txpos))
- {
- printf("LoadBlockIndex(): *** cannot read spending transaction of %s:%i from disk\n", hashTx.ToString().c_str(), nOutput);
- pindexFork = pindex->pprev;
- }
- else if (!txSpend.CheckTransaction())
- {
- printf("LoadBlockIndex(): *** spending transaction of %s:%i is invalid\n", hashTx.ToString().c_str(), nOutput);
- pindexFork = pindex->pprev;
- }
- else
- {
- bool fFound = false;
- BOOST_FOREACH(const CTxIn &txin, txSpend.vin)
- if (txin.prevout.hash == hashTx && txin.prevout.n == nOutput)
- fFound = true;
- if (!fFound)
- {
- printf("LoadBlockIndex(): *** spending transaction of %s:%i does not spend it\n", hashTx.ToString().c_str(), nOutput);
- pindexFork = pindex->pprev;
- }
- }
- }
- }
- nOutput++;
- }
- }
- }
- // check level 5: check whether all prevouts are marked spent
- if (nCheckLevel>4)
- {
- BOOST_FOREACH(const CTxIn &txin, tx.vin)
- {
- CTxIndex txindex;
- if (ReadTxIndex(txin.prevout.hash, txindex))
- if (txindex.vSpent.size()-1 < txin.prevout.n || txindex.vSpent[txin.prevout.n].IsNull())
- {
- printf("LoadBlockIndex(): *** found unspent prevout %s:%i in %s\n", txin.prevout.hash.ToString().c_str(), txin.prevout.n, hashTx.ToString().c_str());
- pindexFork = pindex->pprev;
- }
- }
- }
- }
- }
- }
- if (pindexFork)
- {
- // Reorg back to the fork
- printf("LoadBlockIndex() : *** moving best chain pointer back to block %d\n", pindexFork->nHeight);
- CBlock block;
- if (!block.ReadFromDisk(pindexFork))
- return error("LoadBlockIndex() : block.ReadFromDisk failed");
- CTxDB txdb;
- block.SetBestChain(txdb, pindexFork);
- }
-
- return true;
-}
-
+ CDataStream ssPeers(vchData, SER_DISK, CLIENT_VERSION);
+ // verify stored checksum matches input data
+ uint256 hashTmp = Hash(ssPeers.begin(), ssPeers.end());
+ if (hashIn != hashTmp)
+ return error("CAddrman::Read() : checksum mismatch; data corrupted");
+ unsigned char pchMsgTmp[4];
+ try {
+ // de-serialize file header (pchMessageStart magic number) and
+ ssPeers >> FLATDATA(pchMsgTmp);
+ // verify the network matches ours
+ if (memcmp(pchMsgTmp, pchMessageStart, sizeof(pchMsgTmp)))
+ return error("CAddrman::Read() : invalid network magic number");
-//
-// CAddrDB
-//
-
-bool CAddrDB::WriteAddrman(const CAddrMan& addrman)
-{
- return Write(string("addrman"), addrman);
-}
-
-bool CAddrDB::LoadAddresses()
-{
- if (Read(string("addrman"), addrman))
- {
- printf("Loaded %i addresses\n", addrman.size());
- return true;
+ // de-serialize address data into one CAddrMan object
+ ssPeers >> addr;
}
-
- // Read pre-0.6 addr records
-
- vector<CAddress> vAddr;
- vector<vector<unsigned char> > vDelete;
-
- // Get cursor
- Dbc* pcursor = GetCursor();
- if (!pcursor)
- return false;
-
- loop
- {
- // Read next record
- CDataStream ssKey(SER_DISK, CLIENT_VERSION);
- CDataStream ssValue(SER_DISK, CLIENT_VERSION);
- int ret = ReadAtCursor(pcursor, ssKey, ssValue);
- if (ret == DB_NOTFOUND)
- break;
- else if (ret != 0)
- return false;
-
- // Unserialize
- string strType;
- ssKey >> strType;
- if (strType == "addr")
- {
- CAddress addr;
- ssValue >> addr;
- vAddr.push_back(addr);
- }
+ catch (const std::exception&) {
+ return error("CAddrman::Read() : I/O error or stream data corrupted");
}
- pcursor->close();
-
- addrman.Add(vAddr, CNetAddr("0.0.0.0"));
- printf("Loaded %i addresses\n", addrman.size());
-
- // Note: old records left; we ran into hangs-on-startup
- // bugs for some users who (we think) were running after
- // an unclean shutdown.
return true;
}
-bool LoadAddresses()
-{
- return CAddrDB("cr+").LoadAddresses();
-}
-
-
git://git.novaco.in / novacoin.git / blobdiff