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41d7166c8a
Warning: Replacing fs::system_complete calls with fs::absolute calls in this commit may cause minor changes in behaviour because fs::absolute no longer strips trailing slashes; however these changes are believed to be safe. Co-authored-by: Russell Yanofsky <russ@yanofsky.org> Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
91 lines
3.3 KiB
C++
91 lines
3.3 KiB
C++
// Copyright (c) 2021 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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#include <chainparams.h>
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#include <consensus/validation.h>
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#include <fs.h>
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#include <node/utxo_snapshot.h>
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#include <test/fuzz/FuzzedDataProvider.h>
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#include <test/fuzz/fuzz.h>
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#include <test/fuzz/util.h>
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#include <test/util/mining.h>
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#include <test/util/setup_common.h>
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#include <validation.h>
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#include <validationinterface.h>
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using node::SnapshotMetadata;
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namespace {
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const std::vector<std::shared_ptr<CBlock>>* g_chain;
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void initialize_chain()
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{
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const auto params{CreateChainParams(ArgsManager{}, CBaseChainParams::REGTEST)};
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static const auto chain{CreateBlockChain(2 * COINBASE_MATURITY, *params)};
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g_chain = &chain;
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}
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FUZZ_TARGET_INIT(utxo_snapshot, initialize_chain)
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{
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FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
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std::unique_ptr<const TestingSetup> setup{MakeNoLogFileContext<const TestingSetup>()};
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const auto& node = setup->m_node;
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auto& chainman{*node.chainman};
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const auto snapshot_path = gArgs.GetDataDirNet() / "fuzzed_snapshot.dat";
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Assert(!chainman.SnapshotBlockhash());
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{
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CAutoFile outfile{fsbridge::fopen(snapshot_path, "wb"), SER_DISK, CLIENT_VERSION};
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const auto file_data{ConsumeRandomLengthByteVector(fuzzed_data_provider)};
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outfile << Span{file_data};
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}
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const auto ActivateFuzzedSnapshot{[&] {
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CAutoFile infile{fsbridge::fopen(snapshot_path, "rb"), SER_DISK, CLIENT_VERSION};
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SnapshotMetadata metadata;
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try {
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infile >> metadata;
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} catch (const std::ios_base::failure&) {
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return false;
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}
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return chainman.ActivateSnapshot(infile, metadata, /*in_memory=*/true);
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}};
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if (fuzzed_data_provider.ConsumeBool()) {
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for (const auto& block : *g_chain) {
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BlockValidationState dummy;
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bool processed{chainman.ProcessNewBlockHeaders({*block}, dummy, ::Params())};
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Assert(processed);
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const auto* index{WITH_LOCK(::cs_main, return chainman.m_blockman.LookupBlockIndex(block->GetHash()))};
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Assert(index);
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}
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}
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if (ActivateFuzzedSnapshot()) {
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LOCK(::cs_main);
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Assert(!chainman.ActiveChainstate().m_from_snapshot_blockhash->IsNull());
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Assert(*chainman.ActiveChainstate().m_from_snapshot_blockhash ==
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*chainman.SnapshotBlockhash());
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const auto& coinscache{chainman.ActiveChainstate().CoinsTip()};
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int64_t chain_tx{};
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for (const auto& block : *g_chain) {
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Assert(coinscache.HaveCoin(COutPoint{block->vtx.at(0)->GetHash(), 0}));
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const auto* index{chainman.m_blockman.LookupBlockIndex(block->GetHash())};
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const auto num_tx{Assert(index)->nTx};
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Assert(num_tx == 1);
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chain_tx += num_tx;
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}
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Assert(g_chain->size() == coinscache.GetCacheSize());
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Assert(chain_tx == chainman.ActiveTip()->nChainTx);
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} else {
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Assert(!chainman.SnapshotBlockhash());
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Assert(!chainman.ActiveChainstate().m_from_snapshot_blockhash);
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}
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// Snapshot should refuse to load a second time regardless of validity
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Assert(!ActivateFuzzedSnapshot());
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}
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} // namespace
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