/** @file

  fuzzing mgmt/rpc/jsonrpc

  @section license License

  Licensed to the Apache Software Foundation (ASF) under one

  or more contributor license agreements.  See the NOTICE file

  distributed with this work for additional information

  regarding copyright ownership.  The ASF licenses this file

  to you 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 "mgmt/rpc/jsonrpc/JsonRPCManager.h"

#include "mgmt/rpc/jsonrpc/JsonRPC.h"

#include "mgmt/rpc/handlers/common/ErrorUtils.h"

#include "tscore/Diags.h"

#define kMinInputLength 5

#define kMaxInputLength 1024

// Not using the singleton logic.

struct JsonRpcUnitTest : rpc::JsonRPCManager {

  JsonRpcUnitTest() : JsonRPCManager() {}

  using base = JsonRPCManager;

  bool

  remove_handler(std::string const &name)

  {

    return base::remove_handler(name);

  }

  template <typename Func>

  bool

  add_notification_handler(const std::string &name, Func &&call)

  {

    return base::add_notification_handler(name, std::forward<Func>(call), nullptr, {});

  }

  template <typename Func>

  bool

  add_method_handler(const std::string &name, Func &&call)

  {

    return base::add_method_handler(name, std::forward<Func>(call), nullptr, {});

  }

  std::optional<std::string>

  handle_call(std::string const &jsonString)

  {

    return base::handle_call(rpc::Context{}, jsonString);

  }

};

extern "C" int

LLVMFuzzerTestOneInput(const uint8_t *input_data, size_t size_data)

{

  if (size_data < kMinInputLength || size_data > kMaxInputLength) {

    return 1;

  }

  std::string input(reinterpret_cast<const char *>(input_data), size_data);

  DiagsPtr::set(new Diags("fuzzing", "", "", nullptr));

  JsonRpcUnitTest rpc;

  rpc.handle_call(input);

  delete diags();

  return 0;

}