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-BEGIN VERIFY SCRIPT- # Rename sed -i -e 's/MakeFuzzingContext/MakeNoLogFileContext/g' $(git grep -l MakeFuzzingContext) # Bump the copyright of touched files in this scripted diff to avoid touching them again later ./contrib/devtools/copyright_header.py update ./src/test/fuzz/ -END VERIFY SCRIPT-
69 lines
2.7 KiB
C++
69 lines
2.7 KiB
C++
// Copyright (c) 2020-2021 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 <optional.h>
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#include <streams.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 <array>
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#include <cstdint>
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#include <iostream>
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#include <optional>
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#include <string>
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#include <vector>
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FUZZ_TARGET(buffered_file)
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{
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FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
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FuzzedFileProvider fuzzed_file_provider = ConsumeFile(fuzzed_data_provider);
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std::optional<CBufferedFile> opt_buffered_file;
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FILE* fuzzed_file = fuzzed_file_provider.open();
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try {
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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>());
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} catch (const std::ios_base::failure&) {
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if (fuzzed_file != nullptr) {
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fclose(fuzzed_file);
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}
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}
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if (opt_buffered_file && fuzzed_file != nullptr) {
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bool setpos_fail = false;
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while (fuzzed_data_provider.ConsumeBool()) {
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CallOneOf(
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fuzzed_data_provider,
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[&] {
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std::array<uint8_t, 4096> arr{};
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try {
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opt_buffered_file->read((char*)arr.data(), fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096));
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} catch (const std::ios_base::failure&) {
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}
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},
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[&] {
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opt_buffered_file->SetLimit(fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096));
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},
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[&] {
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if (!opt_buffered_file->SetPos(fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096))) {
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setpos_fail = true;
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}
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},
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[&] {
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if (setpos_fail) {
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// Calling FindByte(...) after a failed SetPos(...) call may result in an infinite loop.
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return;
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}
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try {
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opt_buffered_file->FindByte(fuzzed_data_provider.ConsumeIntegral<char>());
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} catch (const std::ios_base::failure&) {
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}
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},
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[&] {
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ReadFromStream(fuzzed_data_provider, *opt_buffered_file);
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});
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}
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opt_buffered_file->GetPos();
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opt_buffered_file->GetType();
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opt_buffered_file->GetVersion();
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}
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}
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