/****************************************************************************
 * apps/examples/usrsocktest/usrsocktest_basic_connect.c
 *
 * 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.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <sys/socket.h>
#include <errno.h>
#include <sys/types.h>
#include <stdbool.h>
#include <assert.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>

#include "defines.h"

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/****************************************************************************
 * Private Types
 ****************************************************************************/

/****************************************************************************
 * Private Function Prototypes
 ****************************************************************************/

/****************************************************************************
 * Private Data
 ****************************************************************************/

static bool started;
static int sd;

/****************************************************************************
 * Public Data
 ****************************************************************************/

/****************************************************************************
 * Private Functions
 ****************************************************************************/

/****************************************************************************
 * Name: setup
 *
 * Description:
 *   Run before every testcase
 *
 * Input Parameters:
 *   dconf - test daemon configuration
 *
 * Returned Value:
 *   None
 *
 * Assumptions/Limitations:
 *   None
 *
 ****************************************************************************/

static void setup(FAR struct usrsocktest_daemon_conf_s *dconf)
{
  dconf->endpoint_addr = "127.0.0.1";
  dconf->endpoint_port = 255;
  TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_start(dconf));
  started = true;

  sd = socket(AF_INET, SOCK_STREAM, 0);
  TEST_ASSERT_TRUE(sd >= 0);
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
}

/****************************************************************************
 * Name: Teardown
 *
 * Description:
 *   Run after every testcase
 *
 * Input Parameters:
 *   None
 *
 * Returned Value:
 *   None
 *
 * Assumptions/Limitations:
 *   None
 *
 ****************************************************************************/

static void teardown(void)
{
  int ret;

  if (sd >= 0)
    {
      ret = close(sd);
      assert(ret >= 0);
    }

  if (started)
    {
      ret = usrsocktest_daemon_stop();
      assert(ret == OK);
    }
}

/****************************************************************************
 * Name: not_connected
 *
 * Description:
 *   Opened socket is not connected
 *
 * Input Parameters:
 *   None
 *
 * Returned Value:
 *   None
 *
 * Assumptions/Limitations:
 *   None
 *
 ****************************************************************************/

static void not_connected(void)
{
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
}

/****************************************************************************
 * Name: basic_connect_connect
 *
 * Description:
 *   Open and connect the socket
 *
 * Input Parameters:
 *   None
 *
 * Returned Value:
 *   None
 *
 * Assumptions/Limitations:
 *   None
 *
 ****************************************************************************/

static void basic_connect_connect(void)
{
  int ret;
  struct sockaddr_in addr;

  inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr.s_addr);
  addr.sin_family = AF_INET;
  addr.sin_port = htons(255);
  ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
  TEST_ASSERT_EQUAL(0, ret);
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());

  /* Attempt reconnect to same address */

  inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr.s_addr);
  addr.sin_family = AF_INET;
  addr.sin_port = htons(255);
  ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
  TEST_ASSERT_EQUAL(-1, ret);
  TEST_ASSERT_EQUAL(EISCONN, errno);
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());

  /* Attempt reconnect to different address */

  inet_pton(AF_INET, "1.1.1.1", &addr.sin_addr.s_addr);
  addr.sin_family = AF_INET;
  addr.sin_port = htons(1);
  ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
  TEST_ASSERT_EQUAL(-1, ret);
  TEST_ASSERT_EQUAL(EISCONN, errno);
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());

  /* Close socket */

  TEST_ASSERT_TRUE(close(sd) >= 0);
  sd = -1;
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());

  /* Stopping daemon should succeed. */

  TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_stop());
  started = false;
  TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_endp_malloc_cnt);
  TEST_ASSERT_EQUAL(0, usrsocktest_dcmd_malloc_cnt);
}

/****************************************************************************
 * Name: wrong_af
 *
 * Description:
 *   Open and connect the socket with wrong AF
 *
 * Input Parameters:
 *   None
 *
 * Returned Value:
 *   None
 *
 * Assumptions/Limitations:
 *   None
 *
 ****************************************************************************/

static void wrong_af(void)
{
  int ret;
  struct sockaddr_in addr;

  /* Try connect socket with wrong AF */

  inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr.s_addr);
  addr.sin_family = AF_UNIX;
  addr.sin_port = htons(255);
  ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
  TEST_ASSERT_EQUAL(-1, ret);
  TEST_ASSERT_EQUAL(EAFNOSUPPORT, errno);
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());

  /* Close socket */

  TEST_ASSERT_TRUE(close(sd) >= 0);
  sd = -1;
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());

  /* Stopping daemon should succeed. */

  TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_stop());
  started = false;
  TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_endp_malloc_cnt);
  TEST_ASSERT_EQUAL(0, usrsocktest_dcmd_malloc_cnt);
}

/****************************************************************************
 * Name: wrong_port
 *
 * Description:
 *   Open and connect the socket with wrong port
 *
 * Input Parameters:
 *   None
 *
 * Returned Value:
 *   None
 *
 * Assumptions/Limitations:
 *   None
 *
 ****************************************************************************/

static void wrong_port(void)
{
  int ret;
  struct sockaddr_in addr;

  /* Try connect socket to wrong port */

  inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr.s_addr);
  addr.sin_family = AF_INET;
  addr.sin_port = htons(127);
  ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
  TEST_ASSERT_EQUAL(-1, ret);
  TEST_ASSERT_EQUAL(ECONNREFUSED, errno);
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());

  /* Close socket */

  TEST_ASSERT_TRUE(close(sd) >= 0);
  sd = -1;
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());

  /* Stopping daemon should succeed. */

  TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_stop());
  started = false;
  TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_endp_malloc_cnt);
  TEST_ASSERT_EQUAL(0, usrsocktest_dcmd_malloc_cnt);
}

/****************************************************************************
 * Name: wrong_endpoint
 *
 * Description:
 *   Open and connect the socket with wrong endpoint
 *
 * Input Parameters:
 *   None
 *
 * Returned Value:
 *   None
 *
 * Assumptions/Limitations:
 *   None
 *
 ****************************************************************************/

static void wrong_endpoint(void)
{
  int ret;
  struct sockaddr_in addr;

  /* Try connect socket to unreachable endpoint */

  inet_pton(AF_INET, "1.1.1.1", &addr.sin_addr.s_addr);
  addr.sin_family = AF_INET;
  addr.sin_port = htons(1);
  ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
  TEST_ASSERT_EQUAL(-1, ret);
  TEST_ASSERT_EQUAL(ENETUNREACH, errno);
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());

  /* Connect */

  inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr.s_addr);
  addr.sin_family = AF_INET;
  addr.sin_port = htons(255);
  ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
  TEST_ASSERT_EQUAL(0, ret);
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());

  /* Close socket */

  TEST_ASSERT_TRUE(close(sd) >= 0);
  sd = -1;
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());

  /* Stopping daemon should succeed. */

  TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_stop());
  started = false;
  TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_active_sockets());
  TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_connected_sockets());
  TEST_ASSERT_EQUAL(0, usrsocktest_endp_malloc_cnt);
  TEST_ASSERT_EQUAL(0, usrsocktest_dcmd_malloc_cnt);
}

TEST_SETUP(basic_connect)
{
  usrsocktest_daemon_config = usrsocktest_daemon_defconf;
  setup(&usrsocktest_daemon_config);
}

TEST_TEAR_DOWN(basic_connect)
{
  teardown();
}

TEST(basic_connect, not_connected)
{
  not_connected();
}

TEST(basic_connect, basic_connect_connect)
{
  basic_connect_connect();
}

TEST(basic_connect, wrong_af)
{
  wrong_af();
}

TEST(basic_connect, wrong_port)
{
  wrong_port();
}

TEST(basic_connect, wrong_endpoint)
{
  wrong_endpoint();
}

TEST_SETUP(basic_connect_delay)
{
  usrsocktest_daemon_config = usrsocktest_daemon_defconf;
  usrsocktest_daemon_config.delay_all_responses = true;
  setup(&usrsocktest_daemon_config);
}

TEST_TEAR_DOWN(basic_connect_delay)
{
  teardown();
}

TEST(basic_connect_delay, not_connected)
{
  not_connected();
}

TEST(basic_connect_delay, basic_connect_connect)
{
  basic_connect_connect();
}

TEST(basic_connect_delay, wrong_af)
{
  wrong_af();
}

TEST(basic_connect_delay, wrong_port)
{
  wrong_port();
}

TEST(basic_connect_delay, wrong_endpoint)
{
  wrong_endpoint();
}

/****************************************************************************
 * Public Functions
 ****************************************************************************/

TEST_GROUP(basic_connect)
{
  RUN_TEST_CASE(basic_connect, not_connected);
  RUN_TEST_CASE(basic_connect, basic_connect_connect);
  RUN_TEST_CASE(basic_connect, wrong_af);
  RUN_TEST_CASE(basic_connect, wrong_port);
  RUN_TEST_CASE(basic_connect, wrong_endpoint);
}

TEST_GROUP(basic_connect_delay)
{
  RUN_TEST_CASE(basic_connect_delay, not_connected);
  RUN_TEST_CASE(basic_connect_delay, basic_connect_connect);
  RUN_TEST_CASE(basic_connect_delay, wrong_af);
  RUN_TEST_CASE(basic_connect_delay, wrong_port);
  RUN_TEST_CASE(basic_connect_delay, wrong_endpoint);
}