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/*
* Copyright 2021 Code Intelligence GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <memory>
#include <string>
#include "absl/strings/match.h"
#include "fuzz_target_runner.h"
#include "fuzzed_data_provider.h"
#include "jvm_tooling.h"
#include "libfuzzer_callbacks.h"
#include "signal_handler.h"
namespace jazzer {
class AbstractLibfuzzerDriver {
public:
AbstractLibfuzzerDriver(int *argc, char ***argv,
const std::string &usage_string);
virtual ~AbstractLibfuzzerDriver() = default;
virtual RunResult TestOneInput(const uint8_t *data, std::size_t size) = 0;
// Default value of the libFuzzer -error_exitcode flag.
static constexpr int kErrorExitCode = 77;
// A libFuzzer-registered callback that outputs the crashing input, but does
// not include a stack trace.
static void (*libfuzzer_print_crashing_input_)();
protected:
// wrapper around the running jvm instance
std::unique_ptr<jazzer::JVM> jvm_;
private:
// forwards signals caught while the JVM is running
std::unique_ptr<jazzer::SignalHandler> signal_handler_;
void initJvm(const std::string &executable_path);
};
class LibfuzzerDriver : public AbstractLibfuzzerDriver {
public:
LibfuzzerDriver(int *argc, char ***argv);
RunResult TestOneInput(const uint8_t *data, std::size_t size) override;
~LibfuzzerDriver() override = default;
void DumpReproducer(const uint8_t *data, std::size_t size);
private:
// initializes the fuzz target and invokes the TestOneInput function
std::unique_ptr<jazzer::FuzzTargetRunner> runner_;
static std::string getUsageString();
};
} // namespace jazzer
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