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

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practicalswift 2020-03-24 14:35:51 +00:00
parent 87d24e67bb
commit 102f3267e9
3 changed files with 61 additions and 0 deletions
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7
src/Makefile.test.include
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@ -17,6 +17,7 @@ FUZZ_TARGETS = \
test/fuzz/block_filter_deserialize \
test/fuzz/block_header \
test/fuzz/block_header_and_short_txids_deserialize \
test/fuzz/blockfilter \
test/fuzz/blockheader_deserialize \
test/fuzz/blocklocator_deserialize \
test/fuzz/blockmerkleroot \
@ -369,6 +370,12 @@ test_fuzz_block_header_and_short_txids_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMO
test_fuzz_block_header_and_short_txids_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_block_header_and_short_txids_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
test_fuzz_blockfilter_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_blockfilter_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_blockfilter_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_blockfilter_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_blockfilter_SOURCES = $(FUZZ_SUITE) test/fuzz/blockfilter.cpp
test_fuzz_blockheader_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DBLOCKHEADER_DESERIALIZE=1
test_fuzz_blockheader_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_blockheader_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)

44
src/test/fuzz/blockfilter.cpp Normal file
View file

@ -0,0 +1,44 @@
// 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 <blockfilter.h>
#include <optional.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <cstdint>
#include <string>
#include <vector>
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const Optional<BlockFilter> block_filter = ConsumeDeserializable<BlockFilter>(fuzzed_data_provider);
if (!block_filter) {
return;
}
{
(void)block_filter->ComputeHeader(ConsumeUInt256(fuzzed_data_provider));
(void)block_filter->GetBlockHash();
(void)block_filter->GetEncodedFilter();
(void)block_filter->GetHash();
}
{
const BlockFilterType block_filter_type = block_filter->GetFilterType();
(void)BlockFilterTypeName(block_filter_type);
}
{
const GCSFilter gcs_filter = block_filter->GetFilter();
(void)gcs_filter.GetN();
(void)gcs_filter.GetParams();
(void)gcs_filter.GetEncoded();
(void)gcs_filter.Match(ConsumeRandomLengthByteVector(fuzzed_data_provider));
GCSFilter::ElementSet element_set;
while (fuzzed_data_provider.ConsumeBool()) {
element_set.insert(ConsumeRandomLengthByteVector(fuzzed_data_provider));
gcs_filter.MatchAny(element_set);
}
}
}

10
src/test/fuzz/util.h
View file

@ -13,6 +13,7 @@
#include <streams.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <uint256.h>
#include <version.h>
#include <cstdint>
@ -70,6 +71,15 @@ NODISCARD inline CScriptNum ConsumeScriptNum(FuzzedDataProvider& fuzzed_data_pro
return CScriptNum{fuzzed_data_provider.ConsumeIntegral<int64_t>()};
}
NODISCARD inline uint256 ConsumeUInt256(FuzzedDataProvider& fuzzed_data_provider) noexcept
{
const std::vector<unsigned char> v256 = fuzzed_data_provider.ConsumeBytes<unsigned char>(sizeof(uint256));
if (v256.size() != sizeof(uint256)) {
return {};
}
return uint256{v256};
}
template <typename T>
bool MultiplicationOverflow(T i, T j)
{