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tests: Add EvalScript(...) fuzzing harness

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This commit is contained in:
practicalswift 2019-10-08 15:17:14 +00:00
parent bebb637472
commit 7e50abcc29
2 changed files with 37 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/bloomfilter_deserialize \
test/fuzz/coins_deserialize \
test/fuzz/diskblockindex_deserialize \
test/fuzz/eval_script \
test/fuzz/inv_deserialize \
test/fuzz/messageheader_deserialize \
test/fuzz/netaddr_deserialize \
@ -299,6 +300,12 @@ test_fuzz_diskblockindex_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_diskblockindex_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_diskblockindex_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_eval_script_SOURCES = $(FUZZ_SUITE) test/fuzz/eval_script.cpp
test_fuzz_eval_script_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_eval_script_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_eval_script_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_eval_script_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_txoutcompressor_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
test_fuzz_txoutcompressor_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DTXOUTCOMPRESSOR_DESERIALIZE=1
test_fuzz_txoutcompressor_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)

30
src/test/fuzz/eval_script.cpp Normal file
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@ -0,0 +1,30 @@
// Copyright (c) 2009-2019 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 <script/interpreter.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <limits>
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const unsigned int flags = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
const std::vector<uint8_t> script_bytes = [&] {
if (fuzzed_data_provider.remaining_bytes() != 0) {
return fuzzed_data_provider.ConsumeRemainingBytes<uint8_t>();
} else {
// Avoid UBSan warning:
// test/fuzz/FuzzedDataProvider.h:212:17: runtime error: null pointer passed as argument 1, which is declared to never be null
// /usr/include/string.h:43:28: note: nonnull attribute specified here
return std::vector<uint8_t>();
}
}();
const CScript script(script_bytes.begin(), script_bytes.end());
for (const auto sig_version : {SigVersion::BASE, SigVersion::WITNESS_V0}) {
std::vector<std::vector<unsigned char>> stack;
(void)EvalScript(stack, script, flags, BaseSignatureChecker(), sig_version, nullptr);
}
}