#include <stddef.h>

#include <stdint.h>

#include <filesystem>

#include <fstream>

#include <memory>

#include <string>

#include <system_error>

#include <unistd.h>

#include "rar.hpp"

namespace fs = std::__fs::filesystem;

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

  // unrar likes to create files in the current directory.

  // So, the following few lines created and 'cd' to a directory named 'o'

  // in the current working directory.

  std::error_code code, ok;

  fs::path original_path = fs::current_path(code);

  if (code != ok) return 0;

  fs::path out_path = original_path / "o";

  bool created = fs::create_directory(out_path, code);

  if (code != ok) return 0;

  fs::current_path(out_path, code);

  if (code != ok) return 0;

  static const std::string filename = "temp.rar";

  std::ofstream file(filename,

                     std::ios::binary | std::ios::out | std::ios::trunc);

  if (!file.is_open()) {

    return 0;

  }

  file.write(reinterpret_cast<const char *>(data), size);

  file.close();

  std::unique_ptr<CommandData> cmd_data(new CommandData);

  cmd_data->ParseArg(const_cast<wchar_t *>(L"-p"));

  cmd_data->ParseArg(const_cast<wchar_t *>(L"x"));

  cmd_data->ParseDone();

  std::wstring wide_filename(filename.begin(), filename.end());

  cmd_data->AddArcName(wide_filename.c_str());

  try {

    CmdExtract extractor(cmd_data.get());

    extractor.DoExtract();

  } catch (...) {

  }

  unlink(filename.c_str());

  // 'cd' back to the original directory and delete 'o' along with

  // all its contents.

  fs::current_path(original_path, code);

  if (code != ok) return 0;

  fs::remove_all(out_path, code);

  if (code != ok) return 0;

  return 0;

}