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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