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-rw-r--r--src/test/fuzz/utxo_snapshot.cpp87
-rw-r--r--src/test/util/mining.cpp33
-rw-r--r--src/test/util/mining.h5
-rw-r--r--src/test/validation_tests.cpp8
4 files changed, 129 insertions, 4 deletions
diff --git a/src/test/fuzz/utxo_snapshot.cpp b/src/test/fuzz/utxo_snapshot.cpp
new file mode 100644
index 0000000000..0b42282b34
--- /dev/null
+++ b/src/test/fuzz/utxo_snapshot.cpp
@@ -0,0 +1,87 @@
+// Copyright (c) 2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <chainparams.h>
+#include <consensus/validation.h>
+#include <test/fuzz/FuzzedDataProvider.h>
+#include <test/fuzz/fuzz.h>
+#include <test/fuzz/util.h>
+#include <test/util/mining.h>
+#include <test/util/setup_common.h>
+#include <validation.h>
+#include <validationinterface.h>
+
+namespace {
+
+const std::vector<std::shared_ptr<CBlock>>* g_chain;
+
+void initialize_chain()
+{
+ const auto params{CreateChainParams(ArgsManager{}, CBaseChainParams::REGTEST)};
+ static const auto chain{CreateBlockChain(2 * COINBASE_MATURITY, *params)};
+ g_chain = &chain;
+}
+
+FUZZ_TARGET_INIT(utxo_snapshot, initialize_chain)
+{
+ FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
+ std::unique_ptr<const TestingSetup> setup{MakeNoLogFileContext<const TestingSetup>()};
+ const auto& node = setup->m_node;
+ auto& chainman{*node.chainman};
+
+ const auto snapshot_path = GetDataDir() / "fuzzed_snapshot.dat";
+
+ Assert(!chainman.SnapshotBlockhash());
+
+ {
+ CAutoFile outfile{fsbridge::fopen(snapshot_path, "wb"), SER_DISK, CLIENT_VERSION};
+ const auto file_data{ConsumeRandomLengthByteVector(fuzzed_data_provider)};
+ outfile << Span<const uint8_t>{file_data};
+ }
+
+ const auto ActivateFuzzedSnapshot{[&] {
+ CAutoFile infile{fsbridge::fopen(snapshot_path, "rb"), SER_DISK, CLIENT_VERSION};
+ SnapshotMetadata metadata;
+ try {
+ infile >> metadata;
+ } catch (const std::ios_base::failure&) {
+ return false;
+ }
+ return chainman.ActivateSnapshot(infile, metadata, /* in_memory */ true);
+ }};
+
+ if (fuzzed_data_provider.ConsumeBool()) {
+ for (const auto& block : *g_chain) {
+ BlockValidationState dummy;
+ bool processed{chainman.ProcessNewBlockHeaders({*block}, dummy, ::Params())};
+ Assert(processed);
+ const auto* index{WITH_LOCK(::cs_main, return chainman.m_blockman.LookupBlockIndex(block->GetHash()))};
+ Assert(index);
+ }
+ }
+
+ if (ActivateFuzzedSnapshot()) {
+ LOCK(::cs_main);
+ Assert(!chainman.ActiveChainstate().m_from_snapshot_blockhash->IsNull());
+ Assert(*chainman.ActiveChainstate().m_from_snapshot_blockhash ==
+ *chainman.SnapshotBlockhash());
+ const auto& coinscache{chainman.ActiveChainstate().CoinsTip()};
+ int64_t chain_tx{};
+ for (const auto& block : *g_chain) {
+ Assert(coinscache.HaveCoin(COutPoint{block->vtx.at(0)->GetHash(), 0}));
+ const auto* index{chainman.m_blockman.LookupBlockIndex(block->GetHash())};
+ const auto num_tx{Assert(index)->nTx};
+ Assert(num_tx == 1);
+ chain_tx += num_tx;
+ }
+ Assert(g_chain->size() == coinscache.GetCacheSize());
+ Assert(chain_tx == chainman.ActiveTip()->nChainTx);
+ } else {
+ Assert(!chainman.SnapshotBlockhash());
+ Assert(!chainman.ActiveChainstate().m_from_snapshot_blockhash);
+ }
+ // Snapshot should refuse to load a second time regardless of validity
+ Assert(!ActivateFuzzedSnapshot());
+}
+} // namespace
diff --git a/src/test/util/mining.cpp b/src/test/util/mining.cpp
index 3fc3329da2..1204873828 100644
--- a/src/test/util/mining.cpp
+++ b/src/test/util/mining.cpp
@@ -11,8 +11,10 @@
#include <node/context.h>
#include <pow.h>
#include <script/standard.h>
+#include <test/util/script.h>
#include <util/check.h>
#include <validation.h>
+#include <versionbits.h>
CTxIn generatetoaddress(const NodeContext& node, const std::string& address)
{
@@ -23,6 +25,37 @@ CTxIn generatetoaddress(const NodeContext& node, const std::string& address)
return MineBlock(node, coinbase_script);
}
+std::vector<std::shared_ptr<CBlock>> CreateBlockChain(size_t total_height, const CChainParams& params)
+{
+ std::vector<std::shared_ptr<CBlock>> ret{total_height};
+ auto time{params.GenesisBlock().nTime};
+ for (size_t height{0}; height < total_height; ++height) {
+ CBlock& block{*(ret.at(height) = std::make_shared<CBlock>())};
+
+ CMutableTransaction coinbase_tx;
+ coinbase_tx.vin.resize(1);
+ coinbase_tx.vin[0].prevout.SetNull();
+ coinbase_tx.vout.resize(1);
+ coinbase_tx.vout[0].scriptPubKey = P2WSH_OP_TRUE;
+ coinbase_tx.vout[0].nValue = GetBlockSubsidy(height + 1, params.GetConsensus());
+ coinbase_tx.vin[0].scriptSig = CScript() << (height + 1) << OP_0;
+ block.vtx = {MakeTransactionRef(std::move(coinbase_tx))};
+
+ block.nVersion = VERSIONBITS_LAST_OLD_BLOCK_VERSION;
+ block.hashPrevBlock = (height >= 1 ? *ret.at(height - 1) : params.GenesisBlock()).GetHash();
+ block.hashMerkleRoot = BlockMerkleRoot(block);
+ block.nTime = ++time;
+ block.nBits = params.GenesisBlock().nBits;
+ block.nNonce = 0;
+
+ while (!CheckProofOfWork(block.GetHash(), block.nBits, params.GetConsensus())) {
+ ++block.nNonce;
+ assert(block.nNonce);
+ }
+ }
+ return ret;
+}
+
CTxIn MineBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey)
{
auto block = PrepareBlock(node, coinbase_scriptPubKey);
diff --git a/src/test/util/mining.h b/src/test/util/mining.h
index 5f250fffe8..1fc1864b91 100644
--- a/src/test/util/mining.h
+++ b/src/test/util/mining.h
@@ -7,12 +7,17 @@
#include <memory>
#include <string>
+#include <vector>
class CBlock;
+class CChainParams;
class CScript;
class CTxIn;
struct NodeContext;
+/** Create a blockchain, starting from genesis */
+std::vector<std::shared_ptr<CBlock>> CreateBlockChain(size_t total_height, const CChainParams& params);
+
/** Returns the generated coin */
CTxIn MineBlock(const NodeContext&, const CScript& coinbase_scriptPubKey);
diff --git a/src/test/validation_tests.cpp b/src/test/validation_tests.cpp
index 1e5baec01a..a0c2e76f00 100644
--- a/src/test/validation_tests.cpp
+++ b/src/test/validation_tests.cpp
@@ -136,11 +136,11 @@ BOOST_AUTO_TEST_CASE(test_assumeutxo)
const auto out110 = *ExpectedAssumeutxo(110, *params);
BOOST_CHECK_EQUAL(out110.hash_serialized.ToString(), "1ebbf5850204c0bdb15bf030f47c7fe91d45c44c712697e4509ba67adb01c618");
- BOOST_CHECK_EQUAL(out110.nChainTx, (unsigned int)110);
+ BOOST_CHECK_EQUAL(out110.nChainTx, 110U);
- const auto out210 = *ExpectedAssumeutxo(210, *params);
- BOOST_CHECK_EQUAL(out210.hash_serialized.ToString(), "9c5ed99ef98544b34f8920b6d1802f72ac28ae6e2bd2bd4c316ff10c230df3f2");
- BOOST_CHECK_EQUAL(out210.nChainTx, (unsigned int)210);
+ const auto out210 = *ExpectedAssumeutxo(200, *params);
+ BOOST_CHECK_EQUAL(out210.hash_serialized.ToString(), "51c8d11d8b5c1de51543c579736e786aa2736206d1e11e627568029ce092cf62");
+ BOOST_CHECK_EQUAL(out210.nChainTx, 200U);
}
BOOST_AUTO_TEST_SUITE_END()
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-03 13:01:09 +0000