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tests: Add fuzzing harness for CAutoFile (streams.h)

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This commit is contained in:
practicalswift 2020-06-02 19:04:44 +00:00
parent e507c0799d
commit f3aa659be6
2 changed files with 79 additions and 0 deletions
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7
src/Makefile.test.include
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@ -10,6 +10,7 @@ FUZZ_TARGETS = \
test/fuzz/addrman_deserialize \ test/fuzz/addrman_deserialize \
test/fuzz/asmap \ test/fuzz/asmap \
test/fuzz/asmap_direct \ test/fuzz/asmap_direct \
test/fuzz/autofile \
test/fuzz/banentry_deserialize \ test/fuzz/banentry_deserialize \
test/fuzz/banman \ test/fuzz/banman \
test/fuzz/base_encode_decode \ test/fuzz/base_encode_decode \
@ -350,6 +351,12 @@ test_fuzz_asmap_direct_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_asmap_direct_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) test_fuzz_asmap_direct_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_asmap_direct_SOURCES = test/fuzz/asmap_direct.cpp test_fuzz_asmap_direct_SOURCES = test/fuzz/asmap_direct.cpp
test_fuzz_autofile_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_autofile_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_autofile_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_autofile_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_autofile_SOURCES = test/fuzz/autofile.cpp
test_fuzz_banentry_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DBANENTRY_DESERIALIZE=1 test_fuzz_banentry_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DBANENTRY_DESERIALIZE=1
test_fuzz_banentry_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS) test_fuzz_banentry_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_banentry_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON) test_fuzz_banentry_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)

72
src/test/fuzz/autofile.cpp Normal file
View file

@ -0,0 +1,72 @@
// 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()};
FuzzedAutoFileProvider fuzzed_auto_file_provider = ConsumeAutoFile(fuzzed_data_provider);
CAutoFile auto_file = fuzzed_auto_file_provider.open();
while (fuzzed_data_provider.ConsumeBool()) {
switch (fuzzed_data_provider.ConsumeIntegralInRange<int>(0, 5)) {
case 0: {
std::array<uint8_t, 4096> arr{};
try {
auto_file.read((char*)arr.data(), fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096));
} catch (const std::ios_base::failure&) {
}
break;
}
case 1: {
const std::array<uint8_t, 4096> arr{};
try {
auto_file.write((const char*)arr.data(), fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096));
} catch (const std::ios_base::failure&) {
}
break;
}
case 2: {
try {
auto_file.ignore(fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096));
} catch (const std::ios_base::failure&) {
}
break;
}
case 3: {
auto_file.fclose();
break;
}
case 4: {
ReadFromStream(fuzzed_data_provider, auto_file);
break;
}
case 5: {
WriteToStream(fuzzed_data_provider, auto_file);
break;
}
}
}
(void)auto_file.Get();
(void)auto_file.GetType();
(void)auto_file.GetVersion();
(void)auto_file.IsNull();
if (fuzzed_data_provider.ConsumeBool()) {
FILE* f = auto_file.release();
if (f != nullptr) {
fclose(f);
}
}
}