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triangles_v5/src/txdb-leveldb.cpp
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sami7777 7d62e34868 Harden network security, fix moneysupply tracking, version system overhaul (v5.8.0) 
- Fix moneysupply calculation in FastImportBlockFile and ConnectBlock assumevalid path
- Route bootstrap downloads through Tor SOCKS proxy (no more clearnet leaks)
- Remove hardcoded clearnet fallback IP from bootstrap
- Fix snprintf missing argument in walletmodel.cpp narration key (UB/crash)
- Fix potential null deref from db_strerror() in rpcwallet.cpp
- Filter non-.onion addresses from HTTPS seed list parser
- Add periodic re-seeding when node has 0 outbound peers
- Make clientversion.h single source of truth for version display string
- Remove redundant DISPLAY_VERSION macros from version.h
- Update README: max supply 2,222,222, CMake build instructions, Tor-only config

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-04-12 19:26:12 -07:00

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// 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.
#include <map>
#include <boost/version.hpp>
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
#include <leveldb/env.h>
#include <leveldb/cache.h>
#include <leveldb/filter_policy.h>
#include <leveldb/iterator.h>
#include <memenv/memenv.h>
#include "kernel.h"
#include "checkpoints.h"
#include "txdb.h"
#include "util.h"
#include "ui_interface.h"
#include "addressindex.h"
#include "main.h"
using namespace std;
using namespace boost;
namespace fs = boost::filesystem;
leveldb::DB *txdb; // global pointer for LevelDB object instance
bool CDiskBlockIndex::fSerializeChainTrust = false;
static leveldb::Options GetOptions() {
leveldb::Options options;
int nCacheSizeMB = GetArg("-dbcache", 2048);
options.block_cache = leveldb::NewLRUCache(nCacheSizeMB * 1048576);
options.filter_policy = leveldb::NewBloomFilterPolicy(10);
// Larger write buffer (64MB vs default 4MB) reduces the frequency of
// memtable flushes and compactions, which is a big win during IBD
// when millions of tx index entries are written sequentially.
options.write_buffer_size = 64 * 1048576;
// Allow more open files for better read performance on large chains
options.max_open_files = 1000;
return options;
}
void init_blockindex(leveldb::Options& options, bool fRemoveOld = false) {
// First time init.
fs::path directory = GetDataDir() / "txleveldb";
if (fRemoveOld) {
fs::remove_all(directory); // remove directory
unsigned int nFile = 1;
while (true)
{
fs::path strBlockFile = GetDataDir() / strprintf("blk%04u.dat", nFile);
// Break if no such file
if( !fs::exists( strBlockFile ) )
break;
fs::remove(strBlockFile);
nFile++;
}
}
fs::create_directory(directory);
printf("Opening LevelDB in %s\n", directory.string().c_str());
leveldb::Status status = leveldb::DB::Open(options, directory.string(), &txdb);
if (!status.ok()) {
throw runtime_error(strprintf("init_blockindex(): error opening database environment %s", status.ToString().c_str()));
}
}
// CDB subclasses are created and destroyed VERY OFTEN. That's why
// we shouldn't treat this as a free operations.
CTxDB::CTxDB(const char* pszMode)
{
assert(pszMode);
activeBatch = NULL;
fReadOnly = (!strchr(pszMode, '+') && !strchr(pszMode, 'w'));
if (txdb) {
pdb = txdb;
return;
}
bool fCreate = strchr(pszMode, 'c');
options = GetOptions();
options.create_if_missing = fCreate;
options.filter_policy = leveldb::NewBloomFilterPolicy(10);
init_blockindex(options); // Init directory
pdb = txdb;
if (Exists(string("version")))
{
ReadVersion(nVersion);
printf("Transaction index version is %d\n", nVersion);
if (nVersion < DATABASE_VERSION)
{
printf("Required index version is %d, removing old database\n", DATABASE_VERSION);
// Leveldb instance destruction
delete txdb;
txdb = pdb = NULL;
delete activeBatch;
activeBatch = NULL;
init_blockindex(options, true); // Remove directory and create new database
pdb = txdb;
bool fTmp = fReadOnly;
fReadOnly = false;
WriteVersion(DATABASE_VERSION); // Save transaction index version
fReadOnly = fTmp;
}
}
else if (fCreate)
{
bool fTmp = fReadOnly;
fReadOnly = false;
WriteVersion(DATABASE_VERSION);
fReadOnly = fTmp;
}
printf("Opened LevelDB successfully\n");
}
void CTxDB::Close()
{
delete txdb;
txdb = pdb = NULL;
delete options.filter_policy;
options.filter_policy = NULL;
delete options.block_cache;
options.block_cache = NULL;
delete activeBatch;
activeBatch = NULL;
}
bool CTxDB::TxnBegin()
{
// Allow calling TxnBegin when a batch is already active (no-op).
// This lets callers like SetBestChain share a batch that was opened
// earlier by AddToBlockIndex, merging two commits into one.
if (activeBatch)
return true;
activeBatch = new leveldb::WriteBatch();
return true;
}
bool CTxDB::TxnCommit()
{
assert(activeBatch);
leveldb::Status status = pdb->Write(leveldb::WriteOptions(), activeBatch);
delete activeBatch;
activeBatch = NULL;
if (!status.ok()) {
printf("LevelDB batch commit failure: %s\n", status.ToString().c_str());
return false;
}
return true;
}
class CBatchScanner : public leveldb::WriteBatch::Handler {
public:
std::string needle;
bool *deleted;
std::string *foundValue;
bool foundEntry;
CBatchScanner() : foundEntry(false) {}
virtual void Put(const leveldb::Slice& key, const leveldb::Slice& value) {
if (key.ToString() == needle) {
foundEntry = true;
*deleted = false;
*foundValue = value.ToString();
}
}
virtual void Delete(const leveldb::Slice& key) {
if (key.ToString() == needle) {
foundEntry = true;
*deleted = true;
}
}
};
// When performing a read, if we have an active batch we need to check it first
// before reading from the database, as the rest of the code assumes that once
// a database transaction begins reads are consistent with it. It would be good
// to change that assumption in future and avoid the performance hit, though in
// practice it does not appear to be large.
bool CTxDB::ScanBatch(const CDataStream &key, string *value, bool *deleted) const {
assert(activeBatch);
*deleted = false;
CBatchScanner scanner;
scanner.needle = key.str();
scanner.deleted = deleted;
scanner.foundValue = value;
leveldb::Status status = activeBatch->Iterate(&scanner);
if (!status.ok()) {
throw runtime_error(status.ToString());
}
return scanner.foundEntry;
}
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::ReadAddressIndexBestChain(uint256& hashBestChain)
{
return Read(string("addressIndexBestChain"), hashBestChain);
}
bool CTxDB::WriteAddressIndexBestChain(uint256 hashBestChain)
{
return Write(string("addressIndexBestChain"), hashBestChain);
}
bool CTxDB::ReadAddressIndexStartHeight(int& nHeight)
{
return Read(string("addressIndexStartHeight"), nHeight);
}
bool CTxDB::WriteAddressIndexStartHeight(int nHeight)
{
return Write(string("addressIndexStartHeight"), nHeight);
}
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);
}
static CBlockIndex *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 (mapBlockIndex.size() > 0) {
// Already loaded once in this session. It can happen during migration
// from BDB.
return true;
}
// Check DB format version to determine serialization features.
int nDbFormat = 1;
ReadDbFormat(nDbFormat);
CDiskBlockIndex::fSerializeChainTrust = (nDbFormat >= 2);
if (CDiskBlockIndex::fSerializeChainTrust)
printf("LoadBlockIndex(): DB format v%d — nChainTrust persisted\n", nDbFormat);
else
printf("LoadBlockIndex(): DB format v%d — will recalculate nChainTrust (one-time upgrade)\n", nDbFormat);
// The block index is an in-memory structure that maps hashes to on-disk
// locations where the contents of the block can be found. Here, we scan it
// out of the DB and into mapBlockIndex.
int64_t nPhaseStart = GetTimeMillis();
int64_t nTotalStart = nPhaseStart;
leveldb::Iterator *iterator = pdb->NewIterator(leveldb::ReadOptions());
// Seek to start key.
CDataStream ssStartKey(SER_DISK, CLIENT_VERSION);
ssStartKey << make_pair(string("blockindex"), uint256(0));
iterator->Seek(ssStartKey.str());
// Now read each entry.
int nBlocksLoaded = 0;
while (iterator->Valid())
{
// Report progress every 100k blocks
if (++nBlocksLoaded % 100000 == 0)
{
std::string strMsg = strprintf(_("Loading block index... (%d blocks)"), nBlocksLoaded);
uiInterface.InitMessage(strMsg);
}
// Unpack keys and values.
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
ssKey.write(iterator->key().data(), iterator->key().size());
CDataStream ssValue(SER_DISK, CLIENT_VERSION);
ssValue.write(iterator->value().data(), iterator->value().size());
string strType;
ssKey >> strType;
// Did we reach the end of the data to read?
if (fRequestShutdown || strType != "blockindex")
break;
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;
// nChainTrust is populated from disk if fSerializeChainTrust, else stays 0
pindexNew->nChainTrust = diskindex.nChainTrust;
// Watch for genesis block
if (pindexGenesisBlock == NULL && blockHash == (!fTestNet ? hashGenesisBlockOfficial : hashGenesisBlockTestNet))
pindexGenesisBlock = pindexNew;
if (!pindexNew->CheckIndex()) {
delete iterator;
return error("LoadBlockIndex() : CheckIndex failed at %d", pindexNew->nHeight);
}
// setStakeSeen is populated below for recent blocks only (Change D)
iterator->Next();
}
delete iterator;
printf("STARTUP-PERF: block_index_deserialize %" PRId64 "ms blocks=%d\n", GetTimeMillis() - nPhaseStart, nBlocksLoaded);
if (fRequestShutdown)
return true;
// ---- nChainTrust: recalculate if not persisted, or verify stake modifiers ----
nPhaseStart = GetTimeMillis();
bool fNeedChainTrustRecalc = !CDiskBlockIndex::fSerializeChainTrust;
if (fNeedChainTrustRecalc)
{
uiInterface.InitMessage(_("Calculating chain trust (one-time upgrade)..."));
vector<pair<int, CBlockIndex*> > vSortedByHeight;
vSortedByHeight.reserve(mapBlockIndex.size());
for (const auto& item : mapBlockIndex)
vSortedByHeight.push_back(make_pair(item.second->nHeight, item.second));
sort(vSortedByHeight.begin(), vSortedByHeight.end());
int nLastCheckpointHeight = Checkpoints::GetTotalBlocksEstimate();
int nProgressInterval = std::max((int)vSortedByHeight.size() / 20, 1);
int nCount = 0;
for (const auto& item : vSortedByHeight)
{
CBlockIndex* pindex = item.second;
pindex->nChainTrust = (pindex->pprev ? pindex->pprev->nChainTrust : 0) + pindex->GetBlockTrust();
if (pindex->nHeight >= nLastCheckpointHeight)
{
pindex->nStakeModifierChecksum = GetStakeModifierChecksum(pindex);
if (!CheckStakeModifierCheckpoints(pindex->nHeight, pindex->nStakeModifierChecksum))
return error("CTxDB::LoadBlockIndex() : Failed stake modifier checkpoint height=%d, modifier=0x%016"PRIx64, pindex->nHeight, pindex->nStakeModifier);
}
if (++nCount % nProgressInterval == 0)
{
std::string strMsg = strprintf(_("Calculating chain trust... (%d%%)"), nCount * 100 / vSortedByHeight.size());
uiInterface.InitMessage(strMsg);
}
}
// Upgrade: rewrite all block index entries with nChainTrust and bump format.
printf("LoadBlockIndex(): upgrading DB to format v3 (persisting nChainTrust + UTXO model)...\n");
uiInterface.InitMessage(_("Upgrading block index..."));
CDiskBlockIndex::fSerializeChainTrust = true;
leveldb::WriteBatch batch;
nCount = 0;
for (const auto& item : vSortedByHeight)
{
CBlockIndex* pindex = item.second;
CDiskBlockIndex diskindex(pindex);
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
ssKey << make_pair(string("blockindex"), *pindex->phashBlock);
CDataStream ssValue(SER_DISK, CLIENT_VERSION);
ssValue << diskindex;
batch.Put(ssKey.str(), ssValue.str());
// Flush in chunks to limit memory usage
if (++nCount % 100000 == 0)
{
pdb->Write(leveldb::WriteOptions(), &batch);
batch.Clear();
printf("LoadBlockIndex(): upgraded %d / %d block index entries\n", nCount, (int)vSortedByHeight.size());
}
}
// Write remaining entries + format version
CDataStream ssFmtKey(SER_DISK, CLIENT_VERSION);
ssFmtKey << string("dbformat");
CDataStream ssFmtValue(SER_DISK, CLIENT_VERSION);
ssFmtValue << (int)3;
batch.Put(ssFmtKey.str(), ssFmtValue.str());
leveldb::Status status = pdb->Write(leveldb::WriteOptions(), &batch);
if (!status.ok())
return error("LoadBlockIndex(): failed to write upgraded block index: %s", status.ToString().c_str());
printf("LoadBlockIndex(): DB upgraded to format v3 (%d entries rewritten)\n", nCount);
}
else
{
// nChainTrust was loaded from disk. Only need stake modifier checksums
// for blocks above the last checkpoint (typically very few or zero).
int nLastCheckpointHeight = Checkpoints::GetTotalBlocksEstimate();
bool fNeedModifierCheck = false;
for (const auto& item : mapBlockIndex)
{
if (item.second->nHeight >= nLastCheckpointHeight)
{
fNeedModifierCheck = true;
break;
}
}
if (fNeedModifierCheck)
{
vector<pair<int, CBlockIndex*> > vAboveCheckpoint;
for (const auto& item : mapBlockIndex)
if (item.second->nHeight >= nLastCheckpointHeight)
vAboveCheckpoint.push_back(make_pair(item.second->nHeight, item.second));
sort(vAboveCheckpoint.begin(), vAboveCheckpoint.end());
for (const auto& item : vAboveCheckpoint)
{
CBlockIndex* pindex = item.second;
pindex->nStakeModifierChecksum = GetStakeModifierChecksum(pindex);
if (!CheckStakeModifierCheckpoints(pindex->nHeight, pindex->nStakeModifierChecksum))
return error("CTxDB::LoadBlockIndex() : Failed stake modifier checkpoint height=%d, modifier=0x%016"PRIx64, pindex->nHeight, pindex->nStakeModifier);
}
}
}
printf("STARTUP-PERF: chain_trust_and_modifiers %" PRId64 "ms\n", GetTimeMillis() - nPhaseStart);
// Bump dbformat to 3 if needed (databases that already had v2 nChainTrust upgrade).
// UTXO entries are written by ConnectBlock during normal sync. For databases upgrading
// from older versions, FetchInputs has a lazy fallback to the old CTxIndex path.
if (nDbFormat < 3)
{
WriteDbFormat(3);
printf("LoadBlockIndex(): bumped dbformat to v3 (UTXO model with lazy fallback)\n");
}
// Load hashBestChain pointer to end of best chain
nPhaseStart = GetTimeMillis();
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("STARTUP-PERF: best_chain %" PRId64 "ms\n", GetTimeMillis() - nPhaseStart);
// ---- setStakeSeen: only populate for recent blocks (DoS protection) ----
nPhaseStart = GetTimeMillis();
{
int nStakeSeenDepth = 500;
CBlockIndex* pindex = pindexBest;
int nLoaded = 0;
while (pindex && nLoaded < nStakeSeenDepth)
{
if (pindex->IsProofOfStake())
setStakeSeen.insert(make_pair(pindex->prevoutStake, pindex->nStakeTime));
pindex = pindex->pprev;
nLoaded++;
}
printf("LoadBlockIndex(): populated setStakeSeen with %d entries (last %d blocks)\n",
(int)setStakeSeen.size(), nLoaded);
}
printf("STARTUP-PERF: stake_seen %" PRId64 "ms\n", GetTimeMillis() - nPhaseStart);
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());
// Re-evaluate best chain: scan for competing tips with equal or greater trust.
// This fixes nodes stuck on the wrong fork after consensus rule changes.
{
CBlockIndex* pindexBetter = NULL;
for (const auto& item : mapBlockIndex)
{
CBlockIndex* pindex = item.second;
if (pindex == pindexBest)
continue;
if (pindex->nChainTrust > nBestChainTrust)
{
pindexBetter = pindex;
break;
}
if (pindex->nChainTrust == nBestChainTrust &&
pindex->GetBlockHash() < pindexBest->GetBlockHash())
{
if (!pindexBetter || pindex->GetBlockHash() < pindexBetter->GetBlockHash())
pindexBetter = pindex;
}
}
if (pindexBetter)
{
printf("LoadBlockIndex(): found better chain tip %s at height %d (trust %s vs %s)\n",
pindexBetter->GetBlockHash().ToString().substr(0,20).c_str(),
pindexBetter->nHeight,
CBigNum(pindexBetter->nChainTrust).ToString().c_str(),
CBigNum(nBestChainTrust).ToString().c_str());
CBlock block;
if (block.ReadFromDisk(pindexBetter))
{
CTxDB txdb2;
if (block.SetBestChain(txdb2, pindexBetter))
{
hashBestChain = pindexBetter->GetBlockHash();
pindexBest = pindexBetter;
nBestHeight = pindexBetter->nHeight;
nBestChainTrust = pindexBetter->nChainTrust;
printf("LoadBlockIndex(): switched to better chain tip\n");
}
}
}
}
// triangles: load hashSyncCheckpoint (best-effort, non-fatal)
if (!ReadSyncCheckpoint(Checkpoints::hashSyncCheckpoint))
printf("LoadBlockIndex(): no sync checkpoint in DB, using default\n");
else
printf("LoadBlockIndex(): synchronized checkpoint %s\n", Checkpoints::hashSyncCheckpoint.ToString().c_str());
// If the stored checkpoint isn't in our index, reset to genesis so we don't assert-crash
if (!mapBlockIndex.count(Checkpoints::hashSyncCheckpoint))
{
printf("LoadBlockIndex(): sync checkpoint not in index, resetting to genesis\n");
Checkpoints::hashSyncCheckpoint = (!fTestNet ? hashGenesisBlockOfficial : hashGenesisBlockTestNet);
}
// Load bnBestInvalidTrust, OK if it doesn't exist
CBigNum bnBestInvalidTrust;
ReadBestInvalidTrust(bnBestInvalidTrust);
nBestInvalidTrust = bnBestInvalidTrust.getuint256();
// Verify blocks in the best chain
nPhaseStart = GetTimeMillis();
int nCheckLevel = GetArg("-checklevel", 1);
int nCheckDepth = GetArg( "-checkblocks", 50);
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;
for (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: verify spent inputs were removed from UTXO set
if (nCheckLevel>3 && !tx.IsCoinBase())
{
for (const CTxIn &txin : tx.vin)
{
if (HaveUtxo(txin.prevout.hash, txin.prevout.n))
{
printf("LoadBlockIndex(): *** spent input still in UTXO set: %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);
}
printf("STARTUP-PERF: verify_blocks %" PRId64 "ms depth=%d level=%d\n", GetTimeMillis() - nPhaseStart, nCheckDepth, nCheckLevel);
printf("STARTUP-PERF: load_block_index_total %" PRId64 "ms\n", GetTimeMillis() - nTotalStart);
return true;
}
// ============================================================================
// Address index methods
// ============================================================================
bool CTxDB::ReadAddressBalance(int nType, const uint160& hashBytes, int64_t& nBalance)
{
return Read(make_pair(string("addrbal"), CAddressBalanceKey(nType, hashBytes)), nBalance);
}
bool CTxDB::WriteAddressBalance(int nType, const uint160& hashBytes, int64_t nBalance)
{
return Write(make_pair(string("addrbal"), CAddressBalanceKey(nType, hashBytes)), nBalance);
}
bool CTxDB::ReadAddressUtxo(int nType, const uint160& hashBytes, const uint256& txhash, int nIndex, int64_t& nValue, int& nHeight)
{
CAddressUtxoValue val;
if (!Read(make_pair(string("addrutxo"), CAddressUtxoKey(nType, hashBytes, txhash, nIndex)), val))
return false;
nValue = val.nValue;
nHeight = val.nHeight;
return true;
}
bool CTxDB::WriteAddressUtxo(int nType, const uint160& hashBytes, const uint256& txhash, int nIndex, int64_t nValue, int nHeight, const CScript& script)
{
return Write(make_pair(string("addrutxo"), CAddressUtxoKey(nType, hashBytes, txhash, nIndex)),
CAddressUtxoValue(nValue, nHeight, script));
}
bool CTxDB::EraseAddressUtxo(int nType, const uint160& hashBytes, const uint256& txhash, int nIndex)
{
return Erase(make_pair(string("addrutxo"), CAddressUtxoKey(nType, hashBytes, txhash, nIndex)));
}
bool CTxDB::WriteAddressTxId(int nType, const uint160& hashBytes, int nHeight, int nTxIndex, const uint256& txhash)
{
return Write(make_pair(string("addrtxid"), CAddressTxIdKey(nType, hashBytes, nHeight, nTxIndex, txhash)), (char)0);
}
bool CTxDB::EraseAddressTxId(int nType, const uint160& hashBytes, int nHeight, int nTxIndex, const uint256& txhash)
{
return Erase(make_pair(string("addrtxid"), CAddressTxIdKey(nType, hashBytes, nHeight, nTxIndex, txhash)));
}
bool CTxDB::GetAddressUtxos(int nType, const uint160& hashBytes, std::vector<std::pair<COutPoint, std::pair<int64_t, int> > >& vUtxos)
{
vUtxos.clear();
// Build the key prefix to seek to
CDataStream ssKeyPrefix(SER_DISK, CLIENT_VERSION);
ssKeyPrefix << make_pair(string("addrutxo"), CAddressUtxoKey(nType, hashBytes, uint256(0), 0));
std::string strPrefixBegin = ssKeyPrefix.str();
leveldb::Iterator* it = pdb->NewIterator(leveldb::ReadOptions());
for (it->Seek(strPrefixBegin); it->Valid(); it->Next())
{
// Deserialize the key
CDataStream ssKey(it->key().data(), it->key().data() + it->key().size(), SER_DISK, CLIENT_VERSION);
std::string strKeyType;
CAddressUtxoKey utxoKey;
ssKey >> strKeyType;
if (strKeyType != "addrutxo")
break;
ssKey >> utxoKey;
if (utxoKey.nType != nType || utxoKey.hashBytes != hashBytes)
break;
// Deserialize the value
CDataStream ssValue(it->value().data(), it->value().data() + it->value().size(), SER_DISK, CLIENT_VERSION);
CAddressUtxoValue utxoValue;
ssValue >> utxoValue;
COutPoint outpoint(utxoKey.txhash, utxoKey.nIndex);
vUtxos.push_back(make_pair(outpoint, make_pair(utxoValue.nValue, utxoValue.nHeight)));
}
delete it;
return true;
}
bool CTxDB::GetAddressTxIds(int nType, const uint160& hashBytes, int nStartHeight, int nEndHeight, std::vector<uint256>& vTxIds)
{
vTxIds.clear();
// Build the key prefix to seek to
CDataStream ssKeyPrefix(SER_DISK, CLIENT_VERSION);
ssKeyPrefix << make_pair(string("addrtxid"), CAddressTxIdKey(nType, hashBytes, nStartHeight, 0, uint256(0)));
std::string strPrefixBegin = ssKeyPrefix.str();
leveldb::Iterator* it = pdb->NewIterator(leveldb::ReadOptions());
for (it->Seek(strPrefixBegin); it->Valid(); it->Next())
{
CDataStream ssKey(it->key().data(), it->key().data() + it->key().size(), SER_DISK, CLIENT_VERSION);
std::string strKeyType;
CAddressTxIdKey txIdKey;
ssKey >> strKeyType;
if (strKeyType != "addrtxid")
break;
ssKey >> txIdKey;
if (txIdKey.nType != nType || txIdKey.hashBytes != hashBytes)
break;
if (txIdKey.nHeight > nEndHeight)
break;
vTxIds.push_back(txIdKey.txhash);
}
delete it;
return true;
}
// ---------- UTXO database methods ----------
bool CTxDB::ReadUtxo(const uint256& hash, unsigned int n, CUtxoEntry& entry)
{
entry.SetNull();
return Read(make_pair(string("u"), make_pair(hash, n)), entry);
}
bool CTxDB::WriteUtxo(const uint256& hash, unsigned int n, const CUtxoEntry& entry)
{
return Write(make_pair(string("u"), make_pair(hash, n)), entry);
}
bool CTxDB::EraseUtxo(const uint256& hash, unsigned int n)
{
return Erase(make_pair(string("u"), make_pair(hash, n)));
}
bool CTxDB::HaveUtxo(const uint256& hash, unsigned int n)
{
if (Exists(make_pair(string("u"), make_pair(hash, n))))
return true;
// Lazy fallback: check old CTxIndex vSpent for databases upgrading from pre-UTXO format
CTxIndex txindex;
if (ReadTxIndex(hash, txindex))
{
if (n < txindex.vSpent.size() && txindex.vSpent[n].IsNull())
return true; // vSpent[n] is null = output NOT spent = UTXO exists
}
return false;
}
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