diff --git a/src/Makefile.test.include b/src/Makefile.test.include index cf88a02b95f..74252b10ced 100644 --- a/src/Makefile.test.include +++ b/src/Makefile.test.include @@ -203,7 +203,8 @@ FUZZ_WALLET_SRC = \ wallet/test/fuzz/coincontrol.cpp \ wallet/test/fuzz/coinselection.cpp \ wallet/test/fuzz/fees.cpp \ - wallet/test/fuzz/parse_iso8601.cpp + wallet/test/fuzz/parse_iso8601.cpp \ + wallet/test/fuzz/wallet_bdb_parser.cpp if USE_SQLITE FUZZ_WALLET_SRC += \ diff --git a/src/wallet/test/fuzz/wallet_bdb_parser.cpp b/src/wallet/test/fuzz/wallet_bdb_parser.cpp new file mode 100644 index 00000000000..24ef75f791c --- /dev/null +++ b/src/wallet/test/fuzz/wallet_bdb_parser.cpp @@ -0,0 +1,133 @@ +// Copyright (c) 2023 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 // IWYU pragma: keep +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +using wallet::DatabaseOptions; +using wallet::DatabaseStatus; + +namespace { +TestingSetup* g_setup; +} // namespace + +void initialize_wallet_bdb_parser() +{ + static auto testing_setup = MakeNoLogFileContext(); + g_setup = testing_setup.get(); +} + +FUZZ_TARGET(wallet_bdb_parser, .init = initialize_wallet_bdb_parser) +{ + const auto wallet_path = g_setup->m_args.GetDataDirNet() / "fuzzed_wallet.dat"; + + { + AutoFile outfile{fsbridge::fopen(wallet_path, "wb")}; + outfile << Span{buffer}; + } + + const DatabaseOptions options{}; + DatabaseStatus status; + bilingual_str error; + + fs::path bdb_ro_dumpfile{g_setup->m_args.GetDataDirNet() / "fuzzed_dumpfile_bdb_ro.dump"}; + if (fs::exists(bdb_ro_dumpfile)) { // Writing into an existing dump file will throw an exception + remove(bdb_ro_dumpfile); + } + g_setup->m_args.ForceSetArg("-dumpfile", fs::PathToString(bdb_ro_dumpfile)); + +#ifdef USE_BDB + bool bdb_ro_err = false; + bool bdb_ro_pgno_err = false; +#endif + auto db{MakeBerkeleyRODatabase(wallet_path, options, status, error)}; + if (db) { + assert(DumpWallet(g_setup->m_args, *db, error)); + } else { +#ifdef USE_BDB + bdb_ro_err = true; +#endif + if (error.original == "AutoFile::ignore: end of file: iostream error" || + error.original == "AutoFile::read: end of file: iostream error" || + error.original == "Not a BDB file" || + error.original == "Unsupported BDB data file version number" || + error.original == "Unexpected page type, should be 9 (BTree Metadata)" || + error.original == "Unexpected database flags, should only be 0x20 (subdatabases)" || + error.original == "Unexpected outer database root page type" || + error.original == "Unexpected number of entries in outer database root page" || + error.original == "Subdatabase has an unexpected name" || + error.original == "Subdatabase page number has unexpected length" || + error.original == "Unexpected inner database page type" || + error.original == "Unknown record type in records page" || + error.original == "Unknown record type in internal page" || + error.original == "Unexpected page size" || + error.original == "Unexpected page type" || + error.original == "Page number mismatch" || + error.original == "Bad btree level" || + error.original == "Bad page size" || + error.original == "File size is not a multiple of page size" || + error.original == "Meta page number mismatch") { + // Do nothing + } else if (error.original == "Subdatabase last page is greater than database last page" || + error.original == "Page number is greater than database last page" || + error.original == "Page number is greater than subdatabase last page" || + error.original == "Last page number could not fit in file") { +#ifdef USE_BDB + bdb_ro_pgno_err = true; +#endif + } else { + throw std::runtime_error(error.original); + } + } + +#ifdef USE_BDB + // Try opening with BDB + fs::path bdb_dumpfile{g_setup->m_args.GetDataDirNet() / "fuzzed_dumpfile_bdb.dump"}; + if (fs::exists(bdb_dumpfile)) { // Writing into an existing dump file will throw an exception + remove(bdb_dumpfile); + } + g_setup->m_args.ForceSetArg("-dumpfile", fs::PathToString(bdb_dumpfile)); + + try { + auto db{MakeBerkeleyDatabase(wallet_path, options, status, error)}; + if (bdb_ro_err && !db) { + return; + } + assert(db); + if (bdb_ro_pgno_err) { + // BerkeleyRO will throw on opening for errors involving bad page numbers, but BDB does not. + // Ignore those. + return; + } + assert(!bdb_ro_err); + assert(DumpWallet(g_setup->m_args, *db, error)); + } catch (const std::runtime_error& e) { + if (bdb_ro_err) return; + throw e; + } + + // Make sure the dumpfiles match + if (fs::exists(bdb_ro_dumpfile) && fs::exists(bdb_dumpfile)) { + std::ifstream bdb_ro_dump(bdb_ro_dumpfile, std::ios_base::binary | std::ios_base::in); + std::ifstream bdb_dump(bdb_dumpfile, std::ios_base::binary | std::ios_base::in); + assert(std::equal( + std::istreambuf_iterator(bdb_ro_dump.rdbuf()), + std::istreambuf_iterator(), + std::istreambuf_iterator(bdb_dump.rdbuf()))); + } +#endif +}