mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
71 lines
2.2 KiB
C++
71 lines
2.2 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/SolidityCustomMutatorInterface.h>
|
|
#include <test/tools/ossfuzz/SolidityGenerator.h>
|
|
|
|
#include <liblangutil/Exceptions.h>
|
|
|
|
using namespace std;
|
|
using namespace solidity::test::fuzzer;
|
|
|
|
// Prototype as we can't use the FuzzerInterface.h header.
|
|
extern "C" size_t LLVMFuzzerMutate(uint8_t* _data, size_t _size, size_t _maxSize);
|
|
extern "C" size_t LLVMFuzzerCustomMutator(uint8_t* _data, size_t size, size_t _maxSize, unsigned int seed);
|
|
namespace
|
|
{
|
|
/// Define Solidity's custom mutator by implementing libFuzzer's
|
|
/// custom mutator external interface.
|
|
extern "C" size_t LLVMFuzzerCustomMutator(
|
|
uint8_t* _data,
|
|
size_t _size,
|
|
size_t _maxSize,
|
|
unsigned int _seed
|
|
)
|
|
{
|
|
solAssert(_data, "libFuzzerInterface: libFuzzer supplied bad buffer");
|
|
if (_maxSize <= _size || _size == 0)
|
|
return LLVMFuzzerMutate(_data, _size, _maxSize);
|
|
return SolidityCustomMutatorInterface{_data, _size, _maxSize, _seed}.generate();
|
|
}
|
|
}
|
|
|
|
SolidityCustomMutatorInterface::SolidityCustomMutatorInterface(
|
|
uint8_t* _data,
|
|
size_t _size,
|
|
size_t _maxSize,
|
|
unsigned int _seed
|
|
):
|
|
data(_data),
|
|
size(_size),
|
|
maxMutantSize(_maxSize),
|
|
generator(make_shared<SolidityGenerator>(_seed))
|
|
{}
|
|
|
|
size_t SolidityCustomMutatorInterface::generate()
|
|
{
|
|
string testCase = generator->generateTestProgram();
|
|
solAssert(
|
|
!testCase.empty() && data,
|
|
"Solc custom mutator: Invalid mutant or memory pointer"
|
|
);
|
|
size_t mutantSize = min(testCase.size(), maxMutantSize - 1);
|
|
mempcpy(data, testCase.data(), mutantSize);
|
|
return mutantSize;
|
|
}
|