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tests: Add fuzzing harness for classes/functions in cuckoocache.h

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practicalswift 2020-04-08 13:48:37 +00:00
parent 57890b2555
commit bf76000493
3 changed files with 57 additions and 0 deletions
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7
src/Makefile.test.include
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@ -30,6 +30,7 @@ FUZZ_TARGETS = \
test/fuzz/chain \
test/fuzz/checkqueue \
test/fuzz/coins_deserialize \
test/fuzz/cuckoocache \
test/fuzz/decode_tx \
test/fuzz/descriptor_parse \
test/fuzz/diskblockindex_deserialize \
@ -444,6 +445,12 @@ test_fuzz_coins_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_coins_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_coins_deserialize_SOURCES = test/fuzz/deserialize.cpp
test_fuzz_cuckoocache_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_cuckoocache_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_cuckoocache_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_cuckoocache_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_cuckoocache_SOURCES = test/fuzz/cuckoocache.cpp
test_fuzz_decode_tx_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_decode_tx_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_decode_tx_LDADD = $(FUZZ_SUITE_LD_COMMON)

1
src/cuckoocache.h
View file

@ -5,6 +5,7 @@
#ifndef BITCOIN_CUCKOOCACHE_H
#define BITCOIN_CUCKOOCACHE_H
#include <algorithm> // std::find
#include <array>
#include <atomic>
#include <cmath>

49
src/test/fuzz/cuckoocache.cpp Normal file
View file

@ -0,0 +1,49 @@
// 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 <cuckoocache.h>
#include <optional.h>
#include <script/sigcache.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <test/util/setup_common.h>
#include <cstdint>
#include <string>
#include <vector>
namespace {
FuzzedDataProvider* fuzzed_data_provider_ptr = nullptr;
struct RandomHasher {
template <uint8_t>
uint32_t operator()(const bool& /* unused */) const
{
assert(fuzzed_data_provider_ptr != nullptr);
return fuzzed_data_provider_ptr->ConsumeIntegral<uint32_t>();
}
};
} // namespace
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
fuzzed_data_provider_ptr = &fuzzed_data_provider;
CuckooCache::cache<bool, RandomHasher> cuckoo_cache{};
if (fuzzed_data_provider.ConsumeBool()) {
const size_t megabytes = fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 16);
cuckoo_cache.setup_bytes(megabytes << 20);
} else {
cuckoo_cache.setup(fuzzed_data_provider.ConsumeIntegralInRange<uint32_t>(0, 4096));
}
while (fuzzed_data_provider.ConsumeBool()) {
if (fuzzed_data_provider.ConsumeBool()) {
cuckoo_cache.insert(fuzzed_data_provider.ConsumeBool());
} else {
cuckoo_cache.contains(fuzzed_data_provider.ConsumeBool(), fuzzed_data_provider.ConsumeBool());
}
}
fuzzed_data_provider_ptr = nullptr;
}