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https://github.com/bitcoin/bitcoin.git
synced 2025-05-06 01:41:01 +02:00
7ab07e0332
In previous commits in this patchset, we've made sure that every Unload/UnloadBlockIndex member function resets its own members, and does not reach out to globals. This means that their corresponding classes' default destructors can now replace them, and do an even more thorough job without the need to be updated for every new member variable. Therefore, we can remove them, and also remove UnloadBlockIndex since that's not used anymore. Unfortunately, chainstatemanager_loadblockindex relies on CChainState::UnloadBlockIndex, so that needs to stay for now.
261 lines
10 KiB
C++
261 lines
10 KiB
C++
// Copyright (c) 2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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//
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// The bitcoin-chainstate executable serves to surface the dependencies required
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// by a program wishing to use Bitcoin Core's consensus engine as it is right
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// now.
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//
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// DEVELOPER NOTE: Since this is a "demo-only", experimental, etc. executable,
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// it may diverge from Bitcoin Core's coding style.
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//
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// It is part of the libbitcoinkernel project.
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#include <chainparams.h>
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#include <consensus/validation.h>
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#include <core_io.h>
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#include <init/common.h>
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#include <node/blockstorage.h>
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#include <node/chainstate.h>
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#include <scheduler.h>
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#include <script/sigcache.h>
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#include <util/system.h>
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#include <util/thread.h>
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#include <validation.h>
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#include <validationinterface.h>
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#include <filesystem>
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#include <functional>
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#include <iosfwd>
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const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;
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int main(int argc, char* argv[])
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{
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// SETUP: Argument parsing and handling
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if (argc != 2) {
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std::cerr
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<< "Usage: " << argv[0] << " DATADIR" << std::endl
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<< "Display DATADIR information, and process hex-encoded blocks on standard input." << std::endl
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<< std::endl
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<< "IMPORTANT: THIS EXECUTABLE IS EXPERIMENTAL, FOR TESTING ONLY, AND EXPECTED TO" << std::endl
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<< " BREAK IN FUTURE VERSIONS. DO NOT USE ON YOUR ACTUAL DATADIR." << std::endl;
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return 1;
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}
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std::filesystem::path abs_datadir = std::filesystem::absolute(argv[1]);
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std::filesystem::create_directories(abs_datadir);
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gArgs.ForceSetArg("-datadir", abs_datadir.string());
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// SETUP: Misc Globals
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SelectParams(CBaseChainParams::MAIN);
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const CChainParams& chainparams = Params();
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init::SetGlobals(); // ECC_Start, etc.
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// Necessary for CheckInputScripts (eventually called by ProcessNewBlock),
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// which will try the script cache first and fall back to actually
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// performing the check with the signature cache.
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InitSignatureCache();
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InitScriptExecutionCache();
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// SETUP: Scheduling and Background Signals
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CScheduler scheduler{};
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// Start the lightweight task scheduler thread
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scheduler.m_service_thread = std::thread(util::TraceThread, "scheduler", [&] { scheduler.serviceQueue(); });
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// Gather some entropy once per minute.
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scheduler.scheduleEvery(RandAddPeriodic, std::chrono::minutes{1});
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GetMainSignals().RegisterBackgroundSignalScheduler(scheduler);
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// SETUP: Chainstate
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ChainstateManager chainman;
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auto rv = node::LoadChainstate(false,
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std::ref(chainman),
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nullptr,
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false,
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chainparams.GetConsensus(),
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false,
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2 << 20,
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2 << 22,
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(450 << 20) - (2 << 20) - (2 << 22),
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false,
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false,
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[]() { return false; });
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if (rv.has_value()) {
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std::cerr << "Failed to load Chain state from your datadir." << std::endl;
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goto epilogue;
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} else {
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auto maybe_verify_error = node::VerifyLoadedChainstate(std::ref(chainman),
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false,
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false,
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chainparams.GetConsensus(),
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DEFAULT_CHECKBLOCKS,
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DEFAULT_CHECKLEVEL,
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/*get_unix_time_seconds=*/static_cast<int64_t (*)()>(GetTime));
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if (maybe_verify_error.has_value()) {
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std::cerr << "Failed to verify loaded Chain state from your datadir." << std::endl;
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goto epilogue;
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}
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}
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for (CChainState* chainstate : WITH_LOCK(::cs_main, return chainman.GetAll())) {
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BlockValidationState state;
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if (!chainstate->ActivateBestChain(state, nullptr)) {
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std::cerr << "Failed to connect best block (" << state.ToString() << ")" << std::endl;
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goto epilogue;
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}
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}
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// Main program logic starts here
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std::cout
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<< "Hello! I'm going to print out some information about your datadir." << std::endl
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<< "\t" << "Path: " << gArgs.GetDataDirNet() << std::endl
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<< "\t" << "Reindexing: " << std::boolalpha << node::fReindex.load() << std::noboolalpha << std::endl
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<< "\t" << "Snapshot Active: " << std::boolalpha << chainman.IsSnapshotActive() << std::noboolalpha << std::endl
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<< "\t" << "Active Height: " << chainman.ActiveHeight() << std::endl
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<< "\t" << "Active IBD: " << std::boolalpha << chainman.ActiveChainstate().IsInitialBlockDownload() << std::noboolalpha << std::endl;
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{
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CBlockIndex* tip = chainman.ActiveTip();
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if (tip) {
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std::cout << "\t" << tip->ToString() << std::endl;
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}
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}
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for (std::string line; std::getline(std::cin, line);) {
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if (line.empty()) {
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std::cerr << "Empty line found" << std::endl;
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break;
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}
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std::shared_ptr<CBlock> blockptr = std::make_shared<CBlock>();
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CBlock& block = *blockptr;
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if (!DecodeHexBlk(block, line)) {
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std::cerr << "Block decode failed" << std::endl;
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break;
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}
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if (block.vtx.empty() || !block.vtx[0]->IsCoinBase()) {
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std::cerr << "Block does not start with a coinbase" << std::endl;
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break;
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}
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uint256 hash = block.GetHash();
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{
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LOCK(cs_main);
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const CBlockIndex* pindex = chainman.m_blockman.LookupBlockIndex(hash);
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if (pindex) {
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if (pindex->IsValid(BLOCK_VALID_SCRIPTS)) {
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std::cerr << "duplicate" << std::endl;
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break;
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}
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if (pindex->nStatus & BLOCK_FAILED_MASK) {
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std::cerr << "duplicate-invalid" << std::endl;
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break;
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}
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}
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}
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{
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LOCK(cs_main);
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const CBlockIndex* pindex = chainman.m_blockman.LookupBlockIndex(block.hashPrevBlock);
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if (pindex) {
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UpdateUncommittedBlockStructures(block, pindex, chainparams.GetConsensus());
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}
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}
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// Adapted from rpc/mining.cpp
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class submitblock_StateCatcher final : public CValidationInterface
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{
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public:
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uint256 hash;
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bool found;
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BlockValidationState state;
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explicit submitblock_StateCatcher(const uint256& hashIn) : hash(hashIn), found(false), state() {}
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protected:
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void BlockChecked(const CBlock& block, const BlockValidationState& stateIn) override
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{
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if (block.GetHash() != hash)
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return;
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found = true;
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state = stateIn;
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}
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};
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bool new_block;
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auto sc = std::make_shared<submitblock_StateCatcher>(block.GetHash());
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RegisterSharedValidationInterface(sc);
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bool accepted = chainman.ProcessNewBlock(chainparams, blockptr, /*force_processing=*/true, /*new_block=*/&new_block);
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UnregisterSharedValidationInterface(sc);
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if (!new_block && accepted) {
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std::cerr << "duplicate" << std::endl;
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break;
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}
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if (!sc->found) {
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std::cerr << "inconclusive" << std::endl;
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break;
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}
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std::cout << sc->state.ToString() << std::endl;
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switch (sc->state.GetResult()) {
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case BlockValidationResult::BLOCK_RESULT_UNSET:
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std::cerr << "initial value. Block has not yet been rejected" << std::endl;
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break;
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case BlockValidationResult::BLOCK_CONSENSUS:
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std::cerr << "invalid by consensus rules (excluding any below reasons)" << std::endl;
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break;
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case BlockValidationResult::BLOCK_RECENT_CONSENSUS_CHANGE:
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std::cerr << "Invalid by a change to consensus rules more recent than SegWit." << std::endl;
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break;
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case BlockValidationResult::BLOCK_CACHED_INVALID:
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std::cerr << "this block was cached as being invalid and we didn't store the reason why" << std::endl;
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break;
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case BlockValidationResult::BLOCK_INVALID_HEADER:
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std::cerr << "invalid proof of work or time too old" << std::endl;
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break;
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case BlockValidationResult::BLOCK_MUTATED:
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std::cerr << "the block's data didn't match the data committed to by the PoW" << std::endl;
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break;
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case BlockValidationResult::BLOCK_MISSING_PREV:
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std::cerr << "We don't have the previous block the checked one is built on" << std::endl;
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break;
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case BlockValidationResult::BLOCK_INVALID_PREV:
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std::cerr << "A block this one builds on is invalid" << std::endl;
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break;
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case BlockValidationResult::BLOCK_TIME_FUTURE:
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std::cerr << "block timestamp was > 2 hours in the future (or our clock is bad)" << std::endl;
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break;
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case BlockValidationResult::BLOCK_CHECKPOINT:
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std::cerr << "the block failed to meet one of our checkpoints" << std::endl;
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break;
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}
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}
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epilogue:
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// Without this precise shutdown sequence, there will be a lot of nullptr
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// dereferencing and UB.
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scheduler.stop();
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if (chainman.m_load_block.joinable()) chainman.m_load_block.join();
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StopScriptCheckWorkerThreads();
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GetMainSignals().FlushBackgroundCallbacks();
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{
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LOCK(cs_main);
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for (CChainState* chainstate : chainman.GetAll()) {
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if (chainstate->CanFlushToDisk()) {
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chainstate->ForceFlushStateToDisk();
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chainstate->ResetCoinsViews();
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}
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}
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}
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GetMainSignals().UnregisterBackgroundSignalScheduler();
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init::UnsetGlobals();
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}
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