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tests: Add fuzzing harness for functions in script/descriptor.h

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practicalswift 2020-05-16 18:18:07 +00:00
parent 43fb8f0ca3
commit fa80117cfd
2 changed files with 49 additions and 0 deletions
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7
src/Makefile.test.include
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@ -111,6 +111,7 @@ FUZZ_TARGETS = \
test/fuzz/rolling_bloom_filter \
test/fuzz/script \
test/fuzz/script_bitcoin_consensus \
test/fuzz/script_descriptor_cache \
test/fuzz/script_deserialize \
test/fuzz/script_flags \
test/fuzz/script_ops \
@ -948,6 +949,12 @@ test_fuzz_script_bitcoin_consensus_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_script_bitcoin_consensus_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_script_bitcoin_consensus_SOURCES = test/fuzz/script_bitcoin_consensus.cpp
test_fuzz_script_descriptor_cache_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_script_descriptor_cache_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_script_descriptor_cache_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_script_descriptor_cache_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_script_descriptor_cache_SOURCES = test/fuzz/script_descriptor_cache.cpp
test_fuzz_script_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DSCRIPT_DESERIALIZE=1
test_fuzz_script_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_script_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)

42
src/test/fuzz/script_descriptor_cache.cpp Normal file
View file

@ -0,0 +1,42 @@
// 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 <pubkey.h>
#include <script/descriptor.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());
DescriptorCache descriptor_cache;
while (fuzzed_data_provider.ConsumeBool()) {
const std::vector<uint8_t> code = fuzzed_data_provider.ConsumeBytes<uint8_t>(BIP32_EXTKEY_SIZE);
if (code.size() == BIP32_EXTKEY_SIZE) {
CExtPubKey xpub;
xpub.Decode(code.data());
const uint32_t key_exp_pos = fuzzed_data_provider.ConsumeIntegral<uint32_t>();
CExtPubKey xpub_fetched;
if (fuzzed_data_provider.ConsumeBool()) {
(void)descriptor_cache.GetCachedParentExtPubKey(key_exp_pos, xpub_fetched);
descriptor_cache.CacheParentExtPubKey(key_exp_pos, xpub);
assert(descriptor_cache.GetCachedParentExtPubKey(key_exp_pos, xpub_fetched));
} else {
const uint32_t der_index = fuzzed_data_provider.ConsumeIntegral<uint32_t>();
(void)descriptor_cache.GetCachedDerivedExtPubKey(key_exp_pos, der_index, xpub_fetched);
descriptor_cache.CacheDerivedExtPubKey(key_exp_pos, der_index, xpub);
assert(descriptor_cache.GetCachedDerivedExtPubKey(key_exp_pos, der_index, xpub_fetched));
}
assert(xpub == xpub_fetched);
}
(void)descriptor_cache.GetCachedParentExtPubKeys();
(void)descriptor_cache.GetCachedDerivedExtPubKeys();
}
}