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| author | practicalswift <practicalswift@users.noreply.github.com> | 2020-06-02 19:05:13 +0000 |
|---|---|---|
| committer | practicalswift <practicalswift@users.noreply.github.com> | 2020-07-15 11:41:21 +0000 |
| commit | 98233760305a36acbd41d76aeebeada1340f6367 (patch) | |
| tree | d8e7e8f940830a580ed5fdddde02a40d2623bb47 | |
| parent | f3aa659be676a4dd0c20fe6c5cb4acd7a5b38b76 (diff) | |
| download | bitcoin-98233760305a36acbd41d76aeebeada1340f6367.tar.xz | |
tests: Add fuzzing harness for CBufferedFile (streams.h)
| -rw-r--r-- | src/Makefile.test.include | 7 | ||||
| -rw-r--r-- | src/test/fuzz/buffered_file.cpp | 64 |
2 files changed, 71 insertions, 0 deletions
diff --git a/src/Makefile.test.include b/src/Makefile.test.include index 16cddd15c1..211b4b5897 100644 --- a/src/Makefile.test.include +++ b/src/Makefile.test.include @@ -30,6 +30,7 @@ FUZZ_TARGETS = \ test/fuzz/blockundo_deserialize \ test/fuzz/bloom_filter \ test/fuzz/bloomfilter_deserialize \ + test/fuzz/buffered_file \ test/fuzz/chain \ test/fuzz/checkqueue \ test/fuzz/coins_deserialize \ @@ -471,6 +472,12 @@ test_fuzz_bloomfilter_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON) test_fuzz_bloomfilter_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) test_fuzz_bloomfilter_deserialize_SOURCES = test/fuzz/deserialize.cpp +test_fuzz_buffered_file_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) +test_fuzz_buffered_file_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS) +test_fuzz_buffered_file_LDADD = $(FUZZ_SUITE_LD_COMMON) +test_fuzz_buffered_file_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) +test_fuzz_buffered_file_SOURCES = test/fuzz/buffered_file.cpp + test_fuzz_chain_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) test_fuzz_chain_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS) test_fuzz_chain_LDADD = $(FUZZ_SUITE_LD_COMMON) diff --git a/src/test/fuzz/buffered_file.cpp b/src/test/fuzz/buffered_file.cpp new file mode 100644 index 0000000000..29b2277f16 --- /dev/null +++ b/src/test/fuzz/buffered_file.cpp @@ -0,0 +1,64 @@ +// Copyright (c) 2020 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 <optional.h> +#include <streams.h> +#include <test/fuzz/FuzzedDataProvider.h> +#include <test/fuzz/fuzz.h> +#include <test/fuzz/util.h> + +#include <array> +#include <cstdint> +#include <iostream> +#include <optional> +#include <string> +#include <vector> + +void test_one_input(const std::vector<uint8_t>& buffer) +{ + FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()}; + FuzzedFileProvider fuzzed_file_provider = ConsumeFile(fuzzed_data_provider); + std::optional<CBufferedFile> opt_buffered_file; + FILE* fuzzed_file = fuzzed_file_provider.open(); + try { + opt_buffered_file.emplace(fuzzed_file, fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096), fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096), fuzzed_data_provider.ConsumeIntegral<int>(), fuzzed_data_provider.ConsumeIntegral<int>()); + } catch (const std::ios_base::failure&) { + if (fuzzed_file != nullptr) { + fclose(fuzzed_file); + } + } + if (opt_buffered_file && fuzzed_file != nullptr) { + while (fuzzed_data_provider.ConsumeBool()) { + switch (fuzzed_data_provider.ConsumeIntegralInRange<int>(0, 4)) { + case 0: { + std::array<uint8_t, 4096> arr{}; + try { + opt_buffered_file->read((char*)arr.data(), fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096)); + } catch (const std::ios_base::failure&) { + } + break; + } + case 1: { + opt_buffered_file->Seek(fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096)); + break; + } + case 2: { + opt_buffered_file->SetLimit(fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096)); + break; + } + case 3: { + try { + opt_buffered_file->FindByte(fuzzed_data_provider.ConsumeIntegral<char>()); + } catch (const std::ios_base::failure&) { + } + break; + } + case 4: { + ReadFromStream(fuzzed_data_provider, *opt_buffered_file); + break; + } + } + } + } +} |