mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
124 lines
3.1 KiB
C++
124 lines
3.1 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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#include <test/tools/ossfuzz/cdclsolver/FuzzerSolverInterface.h>
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#include <algorithm>
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#include <cstddef>
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#include <iostream>
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#include <optional>
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#include <sstream>
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#include <stdint.h>
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#include <string>
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#include <vector>
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using namespace solidity::test::fuzzer::cdclsolver;
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using namespace std;
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using Constraint = pair<bool, vector<int>>;
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using Constraints = vector<Constraint>;
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// Prototype as we can't use the FuzzerInterface.h header.
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extern "C" int LLVMFuzzerTestOneInput(uint8_t const* _data, size_t _size);
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namespace
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{
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#ifdef DEBUG
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void printConstraints(Constraints _constraints)
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{
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for (auto& i: _constraints)
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{
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cout << (i.first ? "=" : "<=");
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for (auto& j: i.second)
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cout << "," << j;
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cout << endl;
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}
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}
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#endif
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bool validInput(string const& _input)
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{
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return all_of(
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_input.begin(),
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_input.end(),
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[](unsigned char _c) { return isdigit(_c) || (_c == ',') || (_c == '-') || (_c == '\n'); }
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);
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}
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optional<Constraints> parseConstraints(istringstream& _input)
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{
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Constraints constraints;
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for (string line; getline(_input, line); )
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{
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istringstream lineStream;
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lineStream.str(line);
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Constraint constraint;
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bool first = true;
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for (string field; getline(lineStream, field, ','); )
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{
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int val = 0;
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try
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{
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val = stoi(field);
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}
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// Fuzzer can sometimes supply invalid input to stoi that needs to be
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// rejected.
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catch (invalid_argument const&)
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{
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return nullopt;
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}
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if (first)
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{
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constraint.first = static_cast<bool>(val);
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first = false;
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}
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else
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constraint.second.emplace_back(val);
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}
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constraints.emplace_back(constraint);
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}
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// Zero input constraints is an invalid input
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if (constraints.size() < 1)
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return nullopt;
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// Incomplete constraints are invalid
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for (auto c: constraints)
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if (c.second.empty())
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return nullopt;
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return constraints;
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}
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}
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extern "C" int LLVMFuzzerTestOneInput(uint8_t const* _data, size_t _size)
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{
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istringstream input;
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input.str(string(reinterpret_cast<char const*>(_data), _size));
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if (validInput(input.str()))
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{
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// Parse CSV input
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auto constraints = parseConstraints(input);
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if (constraints.has_value())
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{
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FuzzerSolverInterface solverWithModels(/*supportModels=*/true);
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if (!solverWithModels.differentialCheck(constraints.value()))
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{
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cout << solverWithModels.m_lpResult << endl;
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cout << solverWithModels.m_z3Result << endl;
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solAssert(false, "LP result did not match with z3 result.");
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}
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}
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}
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return 0;
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}
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