--- /dev/null
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2012 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "db.h"
+#include "kernel.h"
+#include "checkpoints.h"
+#include "txdb-bdb.h"
+#include "util.h"
+#include "main.h"
+#include <boost/version.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/fstream.hpp>
+
+#ifndef WIN32
+#include "sys/stat.h"
+#endif
+
+using namespace std;
+using namespace boost;
+
+void MakeMockTXDB() {
+ // In practice this won't do anything because the test framework always initializes
+ // an in-memory BDB via bitdb.MakeMock() first, as we use BDB for addresses and wallets.
+ if (!bitdb.IsMock())
+ bitdb.MakeMock();
+}
+
+//
+// CTxDB
+//
+
+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)
+{
+ assert(!fClient);
+ uint256 hash = tx.GetHash();
+
+ return Erase(make_pair(string("tx"), hash));
+}
+
+bool CTxDB::ContainsTx(uint256 hash)
+{
+ assert(!fClient);
+ return Exists(make_pair(string("tx"), hash));
+}
+
+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::ReadHashBestChain(uint256& hashBestChain)
+{
+ return Read(string("hashBestChain"), hashBestChain);
+}
+
+bool CTxDB::WriteHashBestChain(uint256 hashBestChain)
+{
+ return Write(string("hashBestChain"), hashBestChain);
+}
+
+bool CTxDB::ReadBestInvalidTrust(CBigNum& bnBestInvalidTrust)
+{
+ return Read(string("bnBestInvalidTrust"), bnBestInvalidTrust);
+}
+
+bool CTxDB::WriteBestInvalidTrust(CBigNum bnBestInvalidTrust)
+{
+ return Write(string("bnBestInvalidTrust"), bnBestInvalidTrust);
+}
+
+bool CTxDB::ReadSyncCheckpoint(uint256& hashCheckpoint)
+{
+ return Read(string("hashSyncCheckpoint"), hashCheckpoint);
+}
+
+bool CTxDB::WriteSyncCheckpoint(uint256 hashCheckpoint)
+{
+ return Write(string("hashSyncCheckpoint"), hashCheckpoint);
+}
+
+bool CTxDB::ReadCheckpointPubKey(string& strPubKey)
+{
+ return Read(string("strCheckpointPubKey"), strPubKey);
+}
+
+bool CTxDB::WriteCheckpointPubKey(const string& strPubKey)
+{
+ return Write(string("strCheckpointPubKey"), strPubKey);
+}
+
+bool CTxDB::ReadModifierUpgradeTime(unsigned int& nUpgradeTime)
+{
+ return Read(string("nUpgradeTime"), nUpgradeTime);
+}
+
+bool CTxDB::WriteModifierUpgradeTime(const unsigned int& nUpgradeTime)
+{
+ return Write(string("nUpgradeTime"), nUpgradeTime);
+}
+
+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;
+}
+
+bool CTxDB::LoadBlockIndex()
+{
+ if (!LoadBlockIndexGuts())
+ return false;
+
+ if (fRequestShutdown)
+ return true;
+
+ // Calculate nChainTrust
+ 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->nChainTrust = (pindex->pprev ? pindex->pprev->nChainTrust : 0) + pindex->GetBlockTrust();
+ // ppcoin: calculate stake modifier checksum
+ pindex->nStakeModifierChecksum = GetStakeModifierChecksum(pindex);
+ if (!CheckStakeModifierCheckpoints(pindex->nHeight, pindex->nStakeModifierChecksum))
+ return error("CTxDB::LoadBlockIndex() : Failed stake modifier checkpoint height=%d, modifier=0x%016"PRI64x, pindex->nHeight, pindex->nStakeModifier);
+ }
+
+ // 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;
+ nBestChainTrust = pindexBest->nChainTrust;
+ printf("LoadBlockIndex(): hashBestChain=%s height=%d trust=%s date=%s\n",
+ hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, CBigNum(nBestChainTrust).ToString().c_str(),
+ DateTimeStrFormat("%x %H:%M:%S", pindexBest->GetBlockTime()).c_str());
+
+ // ppcoin: load hashSyncCheckpoint
+ if (!ReadSyncCheckpoint(Checkpoints::hashSyncCheckpoint))
+ return error("CTxDB::LoadBlockIndex() : hashSyncCheckpoint not loaded");
+ printf("LoadBlockIndex(): synchronized checkpoint %s\n", Checkpoints::hashSyncCheckpoint.ToString().c_str());
+
+ // Load bnBestInvalidTrust, OK if it doesn't exist
+ CBigNum bnBestInvalidTrust;
+ ReadBestInvalidTrust(bnBestInvalidTrust);
+ nBestInvalidTrust = bnBestInvalidTrust.getuint256();
+
+ // 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 (fRequestShutdown || pindex->nHeight < nBestHeight-nCheckDepth)
+ break;
+ CBlock block;
+ if (!block.ReadFromDisk(pindex))
+ return error("LoadBlockIndex() : block.ReadFromDisk failed");
+ // check level 1: verify block validity
+ // check level 7: verify block signature too
+ if (nCheckLevel>0 && !block.CheckBlock(true, true, (nCheckLevel>6)))
+ {
+ 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 && !fRequestShutdown)
+ {
+ // 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;
+}
+
+
+
+bool CTxDB::LoadBlockIndexGuts()
+{
+ // Get database cursor
+ Dbc* pcursor = GetCursor();
+ if (!pcursor)
+ return false;
+
+ // Load mapBlockIndex
+ unsigned int fFlags = DB_SET_RANGE;
+ while (true)
+ {
+ // 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;
+
+ uint256 blockHash = diskindex.GetBlockHash();
+
+ // Construct block index object
+ CBlockIndex* pindexNew = InsertBlockIndex(blockHash);
+ pindexNew->pprev = InsertBlockIndex(diskindex.hashPrev);
+ pindexNew->pnext = InsertBlockIndex(diskindex.hashNext);
+ pindexNew->nFile = diskindex.nFile;
+ pindexNew->nBlockPos = diskindex.nBlockPos;
+ pindexNew->nHeight = diskindex.nHeight;
+ pindexNew->nMint = diskindex.nMint;
+ pindexNew->nMoneySupply = diskindex.nMoneySupply;
+ pindexNew->nFlags = diskindex.nFlags;
+ pindexNew->nStakeModifier = diskindex.nStakeModifier;
+ pindexNew->prevoutStake = diskindex.prevoutStake;
+ pindexNew->nStakeTime = diskindex.nStakeTime;
+ pindexNew->hashProofOfStake = diskindex.hashProofOfStake;
+ 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 && blockHash == (!fTestNet ? hashGenesisBlock : hashGenesisBlockTestNet))
+ pindexGenesisBlock = pindexNew;
+
+ if (!pindexNew->CheckIndex())
+ return error("LoadBlockIndex() : CheckIndex failed at %d", pindexNew->nHeight);
+
+ // ppcoin: build setStakeSeen
+ if (pindexNew->IsProofOfStake())
+ setStakeSeen.insert(make_pair(pindexNew->prevoutStake, pindexNew->nStakeTime));
+ }
+ else
+ {
+ break; // if shutdown requested or finished loading block index
+ }
+ } // try
+ catch (std::exception &e) {
+ return error("%s() : deserialize error", __PRETTY_FUNCTION__);
+ }
+ }
+ pcursor->close();
+
+ return true;
+}
+
+
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