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merge bitcoin#17113: Add fuzzing harness for descriptor Span-parsing helpers

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This commit is contained in:
Kittywhiskers Van Gogh 2019-10-12 07:50:22 +00:00
parent d3c28bf50b
commit a9d0cbb8f7
2 changed files with 37 additions and 0 deletions
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7
src/Makefile.test.include
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@ -54,6 +54,7 @@ FUZZ_TARGETS = \
test/fuzz/script_deserialize \
test/fuzz/script_flags \
test/fuzz/service_deserialize \
test/fuzz/spanparsing \
test/fuzz/sub_net_deserialize \
test/fuzz/transaction \
test/fuzz/tx_in \
@ -367,6 +368,12 @@ test_fuzz_service_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_service_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) $(LDFLAGS_WRAP_EXCEPTIONS)
test_fuzz_service_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_spanparsing_SOURCES = $(FUZZ_SUITE) test/fuzz/spanparsing.cpp
test_fuzz_spanparsing_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_spanparsing_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_spanparsing_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) $(LDFLAGS_WRAP_EXCEPTIONS)
test_fuzz_spanparsing_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_messageheader_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
test_fuzz_messageheader_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DMESSAGEHEADER_DESERIALIZE=1
test_fuzz_messageheader_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)

30
src/test/fuzz/spanparsing.cpp Normal file
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@ -0,0 +1,30 @@
// Copyright (c) 2019 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 <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <util/spanparsing.h>
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const size_t query_size = fuzzed_data_provider.ConsumeIntegral<size_t>();
const std::string query = fuzzed_data_provider.ConsumeBytesAsString(std::min<size_t>(query_size, 1024 * 1024));
const std::string span_str = fuzzed_data_provider.ConsumeRemainingBytesAsString();
const Span<const char> const_span = MakeSpan(span_str);
Span<const char> mut_span = const_span;
(void)spanparsing::Const(query, mut_span);
mut_span = const_span;
(void)spanparsing::Func(query, mut_span);
mut_span = const_span;
(void)spanparsing::Expr(mut_span);
if (!query.empty()) {
mut_span = const_span;
(void)spanparsing::Split(mut_span, query.front());
}
}