solidity/test/tools/ossfuzz/abiV2ProtoFuzzer.cpp
Bhargava Shastry febccdd96a Fuzzer: Refactor utility methods shared by proto fuzzers.
Co-authored-by: Leonardo <leo@ethereum.org>
Co-authored-by: Daniel Kirchner <daniel@ekpyron.org>
2021-02-10 11:43:57 +01:00

74 lines
2.3 KiB
C++

/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
#include <test/tools/ossfuzz/SolidityEvmoneInterface.h>
#include <test/tools/ossfuzz/protoToAbiV2.h>
#include <src/libfuzzer/libfuzzer_macro.h>
#include <fstream>
using namespace solidity::frontend;
using namespace solidity::test::fuzzer;
using namespace solidity::test::abiv2fuzzer;
using namespace solidity::test;
using namespace solidity::util;
using namespace solidity;
using namespace std;
static evmc::VM evmone = evmc::VM{evmc_create_evmone()};
DEFINE_PROTO_FUZZER(Contract const& _input)
{
string contract_source = ProtoConverter{}.contractToString(_input);
if (const char* dump_path = getenv("PROTO_FUZZER_DUMP_PATH"))
{
// With libFuzzer binary run this to generate the solidity source file x.sol from a proto input:
// PROTO_FUZZER_DUMP_PATH=x.sol ./a.out proto-input
ofstream of(dump_path);
of << contract_source;
}
// We target the default EVM which is the latest
langutil::EVMVersion version;
EVMHost hostContext(version, evmone);
string contractName = ":C";
string methodName = "test()";
CompilerInput cInput(version, contract_source, contractName, OptimiserSettings::minimal(), {}, false);
EvmoneUtility evmoneUtil(
hostContext,
cInput,
contractName,
{},
methodName
);
// Invoke test function
auto result = evmoneUtil.compileDeployAndExecute();
if (result.has_value())
{
// We don't care about EVM One failures other than EVMC_REVERT
solAssert(result->status_code != EVMC_REVERT, "Proto ABIv2 fuzzer: EVM One reverted");
if (result->status_code == EVMC_SUCCESS)
solAssert(
EvmoneUtility::zeroWord(result->output_data, result->output_size),
"Proto ABIv2 fuzzer: ABIv2 coding failure found"
);
}
}