// Copyright 2026 Google LLC

//

// 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.

//

////////////////////////////////////////////////////////////////////////////////

#include "systemd_target_parser.hpp"

#include <fstream>

#include <unistd.h>

#include <vector>

#include <string>

#include <iostream>

// Define the global variable required by systemd_target_parser

bool gVerbose = false;

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

    // Write data to a temporary file

    char temp_filename[] = "/tmp/target_parser_fuzzer_XXXXXX";

    int fd = mkstemp(temp_filename);

    if (fd < 0) {

        return 0;

    }

    if (write(fd, data, size) != static_cast<ssize_t>(size)) {

        close(fd);

        unlink(temp_filename);

        return 0;

    }

    close(fd);

    // Call the function under test

    try {

        std::vector<std::string> filePaths = {temp_filename};

        parseFiles(filePaths);

    } catch (const std::exception& e) {

        // We expect exceptions for invalid JSON or validation errors,

        // which is fine. We want to catch them so the fuzzer doesn't

        // treat them as crashes.

    }

    // Clean up

    unlink(temp_filename);

    return 0;

}