// Copyright 2020 Google Inc.

//

// 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 "json.pb.h"

#include "json_proto_converter.h"

#include "libprotobuf-mutator/src/libfuzzer/libfuzzer_macro.h"

#include <cstdint>

#include <json/config.h>

#include <json/json.h>

#include <memory>

#include <string>

#include <iostream>

#include <cstddef>

#include <stdint.h>

#include <cstring>

#include <iostream>

namespace Json {

class Exception;

}

void FuzzJson(std::string data_str, int32_t hash_settings) {

  Json::CharReaderBuilder builder;

  builder.settings_["failIfExtra"] = hash_settings & (1 << 0);

  builder.settings_["allowComments_"] = hash_settings & (1 << 1);

  builder.settings_["strictRoot_"] = hash_settings & (1 << 2);

  builder.settings_["allowDroppedNullPlaceholders_"] = hash_settings & (1 << 3);

  builder.settings_["allowNumericKeys_"] = hash_settings & (1 << 4);

  builder.settings_["allowSingleQuotes_"] = hash_settings & (1 << 5);

  builder.settings_["failIfExtra_"] = hash_settings & (1 << 6);

  builder.settings_["rejectDupKeys_"] = hash_settings & (1 << 7);

  builder.settings_["allowSpecialFloats_"] = hash_settings & (1 << 8);

  builder.settings_["collectComments"] = hash_settings & (1 << 9);

  builder.settings_["allowTrailingCommas_"] = hash_settings & (1 << 10);

  std::unique_ptr<Json::CharReader> reader(builder.newCharReader());

  const char* begin = data_str.c_str();

  const char* end = begin + data_str.length();

  Json::Value root;

  try {

    reader->parse(begin, end, &root, nullptr);

  } catch (Json::Exception const&) {

  }

}

DEFINE_PROTO_FUZZER(const json_proto::JsonParseAPI &json_proto) {

  json_proto::JsonProtoConverter converter;

  std::string data_str = converter.Convert(json_proto.object_value());

  int32_t hash_settings = json_proto.settings();

  FuzzJson(data_str, hash_settings);

}