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tests: Add fuzzing harness for CScript operations

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This commit is contained in:
practicalswift 2020-02-18 16:41:16 +00:00
parent eb7c50ca1f
commit 65a52a0024
2 changed files with 74 additions and 0 deletions
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7
src/Makefile.test.include
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@ -61,6 +61,7 @@ FUZZ_TARGETS = \
test/fuzz/script \
test/fuzz/script_deserialize \
test/fuzz/script_flags \
test/fuzz/script_ops \
test/fuzz/service_deserialize \
test/fuzz/spanparsing \
test/fuzz/strprintf \
@ -590,6 +591,12 @@ test_fuzz_script_flags_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_script_flags_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_script_flags_SOURCES = $(FUZZ_SUITE) test/fuzz/script_flags.cpp
test_fuzz_script_ops_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_script_ops_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_script_ops_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_script_ops_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_script_ops_SOURCES = $(FUZZ_SUITE) test/fuzz/script_ops.cpp
test_fuzz_service_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DSERVICE_DESERIALIZE=1
test_fuzz_service_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_service_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)

67
src/test/fuzz/script_ops.cpp Normal file
View file

@ -0,0 +1,67 @@
// 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 <script/script.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());
CScript script = ConsumeScript(fuzzed_data_provider);
while (fuzzed_data_provider.remaining_bytes() > 0) {
switch (fuzzed_data_provider.ConsumeIntegralInRange(0, 7)) {
case 0:
script += ConsumeScript(fuzzed_data_provider);
break;
case 1:
script = script + ConsumeScript(fuzzed_data_provider);
break;
case 2:
script << fuzzed_data_provider.ConsumeIntegral<int64_t>();
break;
case 3:
script << ConsumeOpcodeType(fuzzed_data_provider);
break;
case 4:
script << ConsumeScriptNum(fuzzed_data_provider);
break;
case 5:
script << ConsumeRandomLengthByteVector(fuzzed_data_provider);
break;
case 6:
script.clear();
break;
case 7: {
(void)script.GetSigOpCount(false);
(void)script.GetSigOpCount(true);
(void)script.GetSigOpCount(script);
(void)script.HasValidOps();
(void)script.IsPayToScriptHash();
(void)script.IsPayToWitnessScriptHash();
(void)script.IsPushOnly();
(void)script.IsUnspendable();
{
CScript::const_iterator pc = script.begin();
opcodetype opcode;
(void)script.GetOp(pc, opcode);
std::vector<uint8_t> data;
(void)script.GetOp(pc, opcode, data);
(void)script.IsPushOnly(pc);
}
{
int version;
std::vector<uint8_t> program;
(void)script.IsWitnessProgram(version, program);
}
break;
}
}
}
}