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

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This commit is contained in:
practicalswift
2020-05-16 18:20:15 +00:00
parent d3d8adb79f
commit c91d2f0615
2 changed files with 52 additions and 0 deletions
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7
src/Makefile.test.include
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@@ -116,6 +116,7 @@ FUZZ_TARGETS = \
test/fuzz/script_flags \ test/fuzz/script_flags \
test/fuzz/script_interpreter \ test/fuzz/script_interpreter \
test/fuzz/script_ops \ test/fuzz/script_ops \
test/fuzz/script_sigcache \
test/fuzz/scriptnum_ops \ test/fuzz/scriptnum_ops \
test/fuzz/service_deserialize \ test/fuzz/service_deserialize \
test/fuzz/signature_checker \ test/fuzz/signature_checker \
@@ -980,6 +981,12 @@ test_fuzz_script_ops_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_script_ops_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) test_fuzz_script_ops_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_script_ops_SOURCES = test/fuzz/script_ops.cpp test_fuzz_script_ops_SOURCES = test/fuzz/script_ops.cpp
test_fuzz_script_sigcache_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_script_sigcache_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_script_sigcache_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_script_sigcache_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_script_sigcache_SOURCES = test/fuzz/script_sigcache.cpp
test_fuzz_scriptnum_ops_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) test_fuzz_scriptnum_ops_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_scriptnum_ops_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS) test_fuzz_scriptnum_ops_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_scriptnum_ops_LDADD = $(FUZZ_SUITE_LD_COMMON) test_fuzz_scriptnum_ops_LDADD = $(FUZZ_SUITE_LD_COMMON)

45
src/test/fuzz/script_sigcache.cpp Normal file
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@@ -0,0 +1,45 @@
// 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 <chainparams.h>
#include <chainparamsbase.h>
#include <key.h>
#include <pubkey.h>
#include <script/sigcache.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <cstdint>
#include <optional>
#include <string>
#include <vector>
void initialize()
{
static const ECCVerifyHandle ecc_verify_handle;
ECC_Start();
SelectParams(CBaseChainParams::REGTEST);
InitSignatureCache();
}
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const std::optional<CMutableTransaction> mutable_transaction = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider);
const CTransaction tx = mutable_transaction ? CTransaction{*mutable_transaction} : CTransaction{};
const unsigned int n_in = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
const CAmount amount = ConsumeMoney(fuzzed_data_provider);
const bool store = fuzzed_data_provider.ConsumeBool();
PrecomputedTransactionData tx_data;
CachingTransactionSignatureChecker caching_transaction_signature_checker{mutable_transaction ? &tx : nullptr, n_in, amount, store, tx_data};
const std::optional<CPubKey> pub_key = ConsumeDeserializable<CPubKey>(fuzzed_data_provider);
if (pub_key) {
const std::vector<uint8_t> random_bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
if (!random_bytes.empty()) {
(void)caching_transaction_signature_checker.VerifySignature(random_bytes, *pub_key, ConsumeUInt256(fuzzed_data_provider));
}
}
}