/* Copyright (c) 2015 Saúl Ibarra Corretgé <saghul@gmail.com>.

 * All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include "uv.h"

#include "task.h"

#include <string.h>

#ifdef _WIN32

# define INVALID_FD (INVALID_HANDLE_VALUE)

#else

# define INVALID_FD (-1)

#endif

static void on_connect(uv_connect_t* req, int status) {

  ASSERT(status == 0);

  uv_close((uv_handle_t*) req->handle, NULL);

}

static void on_connection(uv_stream_t* server, int status) {

  uv_tcp_t* handle;

  int r;

  ASSERT(status == 0);

  handle = malloc(sizeof(*handle));

  ASSERT(handle != NULL);

  r = uv_tcp_init_ex(server->loop, handle, AF_INET);

  ASSERT(r == 0);

  r = uv_accept(server, (uv_stream_t*)handle);

  ASSERT(r == UV_EBUSY);

  uv_close((uv_handle_t*) server, NULL);

  uv_close((uv_handle_t*) handle, (uv_close_cb)free);

}

static void tcp_listener(uv_loop_t* loop, uv_tcp_t* server) {

  struct sockaddr_in addr;

  int r;

  ASSERT(0 == uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));

  r = uv_tcp_init(loop, server);

  ASSERT(r == 0);

  r = uv_tcp_bind(server, (const struct sockaddr*) &addr, 0);

  ASSERT(r == 0);

  r = uv_listen((uv_stream_t*) server, 128, on_connection);

  ASSERT(r == 0);

}

static void tcp_connector(uv_loop_t* loop, uv_tcp_t* client, uv_connect_t* req) {

  struct sockaddr_in server_addr;

  int r;

  ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr));

  r = uv_tcp_init(loop, client);

  ASSERT(r == 0);

  r = uv_tcp_connect(req,

                     client,

                     (const struct sockaddr*) &server_addr,

                     on_connect);

  ASSERT(r == 0);

}

TEST_IMPL(tcp_create_early) {

  struct sockaddr_in addr;

  struct sockaddr_in sockname;

  uv_tcp_t client;

  uv_os_fd_t fd;

  int r, namelen;

  ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));

  r = uv_tcp_init_ex(uv_default_loop(), &client, AF_INET);

  ASSERT(r == 0);

  r = uv_fileno((const uv_handle_t*) &client, &fd;;

  ASSERT(r == 0);

  ASSERT(fd != INVALID_FD);

  /* Windows returns WSAEINVAL if the socket is not bound */

#ifndef _WIN32

  namelen = sizeof sockname;

  r = uv_tcp_getsockname(&client, (struct sockaddr*) &sockname, &namelen);

  ASSERT(r == 0);

  ASSERT(sockname.sin_family == AF_INET);

#endif

  r = uv_tcp_bind(&client, (const struct sockaddr*) &addr, 0);

  ASSERT(r == 0);

  namelen = sizeof sockname;

  r = uv_tcp_getsockname(&client, (struct sockaddr*) &sockname, &namelen);

  ASSERT(r == 0);

  ASSERT(memcmp(&addr.sin_addr,

                &sockname.sin_addr,

                sizeof(addr.sin_addr)) == 0);

  uv_close((uv_handle_t*) &client, NULL);

  uv_run(uv_default_loop(), UV_RUN_DEFAULT);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(tcp_create_early_bad_bind) {

  struct sockaddr_in addr;

  uv_tcp_t client;

  uv_os_fd_t fd;

  int r;

  if (!can_ipv6())

    RETURN_SKIP("IPv6 not supported");

  ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));

  r = uv_tcp_init_ex(uv_default_loop(), &client, AF_INET6);

  ASSERT(r == 0);

  r = uv_fileno((const uv_handle_t*) &client, &fd;;

  ASSERT(r == 0);

  ASSERT(fd != INVALID_FD);

  /* Windows returns WSAEINVAL if the socket is not bound */

#ifndef _WIN32

  {

    int namelen;

    struct sockaddr_in6 sockname;

    namelen = sizeof sockname;

    r = uv_tcp_getsockname(&client, (struct sockaddr*) &sockname, &namelen);

    ASSERT(r == 0);

    ASSERT(sockname.sin6_family == AF_INET6);

  }

#endif

  r = uv_tcp_bind(&client, (const struct sockaddr*) &addr, 0);

#if !defined(_WIN32) && !defined(__CYGWIN__) && !defined(__MSYS__)

  ASSERT(r == UV_EINVAL);

#else

  ASSERT(r == UV_EFAULT);

#endif

  uv_close((uv_handle_t*) &client, NULL);

  uv_run(uv_default_loop(), UV_RUN_DEFAULT);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(tcp_create_early_bad_domain) {

  uv_tcp_t client;

  int r;

  r = uv_tcp_init_ex(uv_default_loop(), &client, 47);

  ASSERT(r == UV_EINVAL);

  r = uv_tcp_init_ex(uv_default_loop(), &client, 1024);

  ASSERT(r == UV_EINVAL);

  uv_run(uv_default_loop(), UV_RUN_DEFAULT);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(tcp_create_early_accept) {

  uv_tcp_t client, server;

  uv_connect_t connect_req;

  tcp_listener(uv_default_loop(), &server);

  tcp_connector(uv_default_loop(), &client, &connect_req);

  uv_run(uv_default_loop(), UV_RUN_DEFAULT);

  MAKE_VALGRIND_HAPPY();

  return 0;

}