/*

 * Copyright (C) 2019 The Android Open Source Project

 *

 * 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 "perfetto/base/build_config.h"

#include "perfetto/ext/base/unix_socket.h"

#include "src/base/test/test_task_runner.h"

#include "test/test_helper.h"

namespace perfetto {

namespace socket_fuzz {

namespace {

class FakeEventListener : public base::UnixSocket::EventListener {

 public:

  FakeEventListener(const uint8_t* data,

                    size_t size,

                    std::function<void()> data_sent_callback)

      : data_(data), size_(size), data_sent_(data_sent_callback) {}

  void OnNewIncomingConnection(base::UnixSocket*,

                               std::unique_ptr<base::UnixSocket>) override {

    PERFETTO_CHECK(false);

  }

  void OnConnect(base::UnixSocket* self, bool connected) override {

    PERFETTO_CHECK(connected && self->is_connected());

    self->Send(data_, size_, self->fd());

    data_sent_();

  }

  void OnDisconnect(base::UnixSocket*) override { PERFETTO_CHECK(false); }

  void OnDataAvailable(base::UnixSocket*) override { PERFETTO_CHECK(false); }

 private:

  const uint8_t* data_;

  const size_t size_;

  std::function<void()> data_sent_;

};

int FuzzSharedMemory(const uint8_t* data, size_t size) {

  if (!data)

    return 0;

  base::TestTaskRunner task_runner;

  TestHelper helper(&task_runner);

  helper.StartServiceIfRequired();

  FakeEventListener fake_event_listener(

      data, size, task_runner.CreateCheckpoint("data_sent"));

  std::unique_ptr<base::UnixSocket> sock = base::UnixSocket::Connect(

      helper.GetDefaultModeProducerSocketName(), &fake_event_listener,

      &task_runner, base::SockFamily::kUnix, base::SockType::kStream);

  task_runner.RunUntilCheckpoint("data_sent");

  return 0;

}

}  // namespace

}  // namespace socket_fuzz

}  // namespace perfetto

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

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

  return perfetto::socket_fuzz::FuzzSharedMemory(data, size);

}