/* Copyright Joyent, Inc. and other Node contributors. 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 <stdio.h>

#include <stdlib.h>

#include <string.h>

static const int server_port = TEST_PORT;

/* Will be updated right after making the uv_connect_call */

static int connect_port = -1;

static int getsocknamecount = 0;

static int getpeernamecount = 0;

static uv_loop_t* loop;

static uv_tcp_t tcp;

static uv_udp_t udp;

static uv_connect_t connect_req;

static uv_tcp_t tcpServer;

static uv_udp_t udpServer;

static uv_udp_send_t send_req;

static void alloc(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf) {

  buf->base = malloc(suggested_size);

  buf->len = suggested_size;

}

static void on_close(uv_handle_t* peer) {

  free(peer);

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

}

static void after_shutdown(uv_shutdown_t* req, int status) {

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

  free(req);

}

static void after_read(uv_stream_t* handle,

                       ssize_t nread,

                       const uv_buf_t* buf) {

  uv_shutdown_t* req;

  int r;

  if (buf->base) {

    free(buf->base);

  }

  req = (uv_shutdown_t*) malloc(sizeof *req);

  r = uv_shutdown(req, handle, after_shutdown);

  ASSERT(r == 0);

}

static void check_sockname(struct sockaddr* addr, const char* compare_ip,

  int compare_port, const char* context) {

  struct sockaddr_in check_addr = *(struct sockaddr_in*) addr;

  struct sockaddr_in compare_addr;

  char check_ip[17];

  int r;

  ASSERT(0 == uv_ip4_addr(compare_ip, compare_port, &compare_addr));

  /* Both addresses should be ipv4 */

  ASSERT(check_addr.sin_family == AF_INET);

  ASSERT(compare_addr.sin_family == AF_INET);

  /* Check if the ip matches */

  ASSERT(memcmp(&check_addr.sin_addr,

         &compare_addr.sin_addr,

         sizeof compare_addr.sin_addr) == 0);

  /* Check if the port matches. If port == 0 anything goes. */

  ASSERT(compare_port == 0 || check_addr.sin_port == compare_addr.sin_port);

  r = uv_ip4_name(&check_addr, (char*) check_ip, sizeof check_ip);

  ASSERT(r == 0);

  printf("%s: %s:%d\n", context, check_ip, ntohs(check_addr.sin_port));

}

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

  struct sockaddr sockname, peername;

  int namelen;

  uv_tcp_t* handle;

  int r;

  if (status != 0) {

    fprintf(stderr, "Connect error %s\n", uv_err_name(status));

  }

  ASSERT(status == 0);

  handle = malloc(sizeof(*handle));

  ASSERT(handle != NULL);

  r = uv_tcp_init(loop, handle);

  ASSERT(r == 0);

  /* associate server with stream */

  handle->data = server;

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

  ASSERT(r == 0);

  namelen = sizeof sockname;

  r = uv_tcp_getsockname(handle, &sockname, &namelen);

  ASSERT(r == 0);

  check_sockname(&sockname, "127.0.0.1", server_port, "accepted socket");

  getsocknamecount++;

  namelen = sizeof peername;

  r = uv_tcp_getpeername(handle, &peername, &namelen);

  ASSERT(r == 0);

  check_sockname(&peername, "127.0.0.1", connect_port, "accepted socket peer");

  getpeernamecount++;

  r = uv_read_start((uv_stream_t*)handle, alloc, after_read);

  ASSERT(r == 0);

}

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

  struct sockaddr sockname, peername;

  int r, namelen;

  ASSERT(status == 0);

  namelen = sizeof sockname;

  r = uv_tcp_getsockname((uv_tcp_t*) req->handle, &sockname, &namelen);

  ASSERT(r == 0);

  check_sockname(&sockname, "127.0.0.1", 0, "connected socket");

  getsocknamecount++;

  namelen = sizeof peername;

  r = uv_tcp_getpeername((uv_tcp_t*) req->handle, &peername, &namelen);

  ASSERT(r == 0);

  check_sockname(&peername, "127.0.0.1", server_port, "connected socket peer");

  getpeernamecount++;

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

}

static int tcp_listener(void) {

  struct sockaddr_in addr;

  struct sockaddr sockname, peername;

  int namelen;

  int r;

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

  r = uv_tcp_init(loop, &tcpServer);

  if (r) {

    fprintf(stderr, "Socket creation error\n");

    return 1;

  }

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

  if (r) {

    fprintf(stderr, "Bind error\n");

    return 1;

  }

  r = uv_listen((uv_stream_t*)&tcpServer, 128, on_connection);

  if (r) {

    fprintf(stderr, "Listen error\n");

    return 1;

  }

  memset(&sockname, -1, sizeof sockname);

  namelen = sizeof sockname;

  r = uv_tcp_getsockname(&tcpServer, &sockname, &namelen);

  ASSERT(r == 0);

  check_sockname(&sockname, "0.0.0.0", server_port, "server socket");

  getsocknamecount++;

  namelen = sizeof sockname;

  r = uv_tcp_getpeername(&tcpServer, &peername, &namelen);

  ASSERT(r == UV_ENOTCONN);

  getpeernamecount++;

  return 0;

}

static void tcp_connector(void) {

  struct sockaddr_in server_addr;

  struct sockaddr sockname;

  int r, namelen;

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

  r = uv_tcp_init(loop, &tcp;;

  tcp.data = &connect_req;

  ASSERT(!r);

  r = uv_tcp_connect(&connect_req,

                     &tcp,

                     (const struct sockaddr*) &server_addr,

                     on_connect);

  ASSERT(!r);

  /* Fetch the actual port used by the connecting socket. */

  namelen = sizeof sockname;

  r = uv_tcp_getsockname(&tcp, &sockname, &namelen);

  ASSERT(!r);

  ASSERT(sockname.sa_family == AF_INET);

  connect_port = ntohs(((struct sockaddr_in*) &sockname)->sin_port);

  ASSERT(connect_port > 0);

}

static void udp_recv(uv_udp_t* handle,

                     ssize_t nread,

                     const uv_buf_t* buf,

                     const struct sockaddr* addr,

                     unsigned flags) {

  struct sockaddr sockname;

  int namelen;

  int r;

  ASSERT(nread >= 0);

  free(buf->base);

  if (nread == 0) {

    return;

  }

  memset(&sockname, -1, sizeof sockname);

  namelen = sizeof(sockname);

  r = uv_udp_getsockname(&udp, &sockname, &namelen);

  ASSERT(r == 0);

  check_sockname(&sockname, "0.0.0.0", 0, "udp receiving socket");

  getsocknamecount++;

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

  uv_close((uv_handle_t*) handle, NULL);

}

static void udp_send(uv_udp_send_t* req, int status) {

}

static int udp_listener(void) {

  struct sockaddr_in addr;

  struct sockaddr sockname;

  int namelen;

  int r;

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

  r = uv_udp_init(loop, &udpServer);

  if (r) {

    fprintf(stderr, "Socket creation error\n");

    return 1;

  }

  r = uv_udp_bind(&udpServer, (const struct sockaddr*) &addr, 0);

  if (r) {

    fprintf(stderr, "Bind error\n");

    return 1;

  }

  memset(&sockname, -1, sizeof sockname);

  namelen = sizeof sockname;

  r = uv_udp_getsockname(&udpServer, &sockname, &namelen);

  ASSERT(r == 0);

  check_sockname(&sockname, "0.0.0.0", server_port, "udp listener socket");

  getsocknamecount++;

  r = uv_udp_recv_start(&udpServer, alloc, udp_recv);

  ASSERT(r == 0);

  return 0;

}

static void udp_sender(void) {

  struct sockaddr_in server_addr;

  uv_buf_t buf;

  int r;

  r = uv_udp_init(loop, &udp;;

  ASSERT(!r);

  buf = uv_buf_init("PING", 4);

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

  r = uv_udp_send(&send_req,

                  &udp,

                  &buf,

                  1,

                  (const struct sockaddr*) &server_addr,

                  udp_send);

  ASSERT(!r);

}

TEST_IMPL(getsockname_tcp) {

  loop = uv_default_loop();

  if (tcp_listener())

    return 1;

  tcp_connector();

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(getsocknamecount == 3);

  ASSERT(getpeernamecount == 3);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(getsockname_udp) {

  loop = uv_default_loop();

  if (udp_listener())

    return 1;

  udp_sender();

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(getsocknamecount == 2);

  ASSERT(udp.send_queue_size == 0);

  ASSERT(udpServer.send_queue_size == 0);

  MAKE_VALGRIND_HAPPY();

  return 0;

}