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/*
     This file is part of GNUnet.
     Copyright (C) 2009, 2014 GNUnet e.V.

     GNUnet is free software: you can redistribute it and/or modify it
     under the terms of the GNU Affero General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     or (at your option) any later version.

     GNUnet is distributed in the hope that it will be useful, but
     WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Affero General Public License for more details.

     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */
/**
 * @file arm/test_gnunet_service_arm.c
 * @brief testcase for gnunet-service-arm.c; tests ARM by making it start the resolver
 * @author Safey
 * @author Christian Grothoff
 */
#include "platform.h"
#include "gnunet_arm_service.h"
#include "gnunet_resolver_service.h"
#include "gnunet_os_lib.h"
#include "gnunet_program_lib.h"

/**
 * Timeout for starting services, very short because of the strange way start works
 * (by checking if running before starting, so really this time is always waited on
 * startup (annoying)).
 */
#define START_TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 50)

#define TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 10)


static int ret = 1;

static int resolved_ok;

static int asked_for_a_list;

static struct GNUNET_ARM_Handle *arm;

static const char hostname[] = "www.gnu.org"; /* any domain should do */


static void
trigger_disconnect(void *cls)
{
  GNUNET_ARM_disconnect(arm);
  arm = NULL;
}


static void
arm_stop_cb(void *cls,
            enum GNUNET_ARM_RequestStatus status,
            enum GNUNET_ARM_Result result)
{
  GNUNET_break(status == GNUNET_ARM_REQUEST_SENT_OK);
  GNUNET_break(result == GNUNET_ARM_RESULT_STOPPED);
  if (result != GNUNET_ARM_RESULT_STOPPED)
    {
      GNUNET_break(0);
      ret = 4;
    }
  GNUNET_SCHEDULER_add_now(&trigger_disconnect, NULL);
}


static void
service_list(void *cls,
             enum GNUNET_ARM_RequestStatus rs,
             unsigned int count,
             const char *const*list)
{
  unsigned int i;

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
             "%u services are are currently running\n",
             count);
  if (GNUNET_ARM_REQUEST_SENT_OK != rs)
    goto stop_arm;
  for (i = 0; i < count; i++)
    {
      if (0 == strcasecmp(list[i],
                          "resolver (gnunet-service-resolver)"))
        {
          GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
                     "Got service list, now stopping arm\n");
          ret = 0;
        }
    }

stop_arm:
  GNUNET_ARM_request_service_stop(arm,
                                  "arm",
                                  &arm_stop_cb,
                                  NULL);
}


static void
hostname_resolve_cb(void *cls,
                    const struct sockaddr *addr,
                    socklen_t addrlen)
{
  if ((0 == ret) || (4 == ret) || (1 == resolved_ok))
    return;
  if (NULL == addr)
    {
      GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
                 "Failed to resolve hostname!\n");
      GNUNET_break(0);
      ret = 3;
      GNUNET_ARM_request_service_stop(arm,
                                      "arm",
                                      &arm_stop_cb,
                                      NULL);
      return;
    }
  if (0 == asked_for_a_list)
    {
      GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
                 "Resolved hostname, now checking the service list\n");
      GNUNET_ARM_request_service_list(arm,
                                      &service_list,
                                      NULL);
      asked_for_a_list = 1;
      resolved_ok = 1;
    }
}


static void
arm_start_cb(void *cls,
             enum GNUNET_ARM_RequestStatus status,
             enum GNUNET_ARM_Result result)
{
  GNUNET_break(status == GNUNET_ARM_REQUEST_SENT_OK);
  GNUNET_break(result == GNUNET_ARM_RESULT_STARTING);
  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
             "Trying to resolve a hostname via the resolver service!\n");
  /* connect to the resolver service */
  if (NULL ==
      GNUNET_RESOLVER_ip_get(hostname,
                             AF_UNSPEC,
                             TIMEOUT,
                             &hostname_resolve_cb,
                             NULL))
    {
      GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
                 "Unable initiate connection to resolver service\n");
      GNUNET_break(0);
      ret = 2;
      GNUNET_ARM_request_service_stop(arm,
                                      "arm",
                                      &arm_stop_cb,
                                      NULL);
    }
}


static void
run(void *cls,
    char *const *args,
    const char *cfgfile,
    const struct GNUNET_CONFIGURATION_Handle *c)
{
  arm = GNUNET_ARM_connect(c,
                           NULL,
                           NULL);
  GNUNET_ARM_request_service_start(arm,
                                   "arm",
                                   GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
                                   &arm_start_cb,
                                   NULL);
}


int
main(int argc, char *av[])
{
  static char *const argv[] = {
    "test-gnunet-service-arm",
    "-c",
    "test_arm_api_data.conf",
    NULL
  };
  static struct GNUNET_GETOPT_CommandLineOption options[] = {
    GNUNET_GETOPT_OPTION_END
  };

  /* trigger DNS lookup */
#if HAVE_GETADDRINFO
  {
    struct addrinfo *ai;
    int ret;

    if (0 != (ret = getaddrinfo(hostname, NULL, NULL, &ai)))
      {
        fprintf(stderr,
                "Failed to resolve `%s', testcase not run.\n",
                hostname);
        return 77;
      }
    freeaddrinfo(ai);
  }
#elif HAVE_GETHOSTBYNAME2
  {
    struct hostent *host;

    host = gethostbyname2(hostname, AF_INET);
    if (NULL == host)
      host = gethostbyname2(hostname, AF_INET6);
    if (NULL == host)
      {
        fprintf(stderr,
                "Failed to resolve `%s', testcase not run.\n",
                hostname);
        return 77;
      }
  }
#elif HAVE_GETHOSTBYNAME
  {
    struct hostent *host;

    host = gethostbyname(hostname);
    if (NULL == host)
      {
        fprintf(stderr,
                "Failed to resolve `%s', testcase not run.\n",
                hostname);
        return 77;
      }
  }
#else
  fprintf(stderr,
          "libc fails to have resolver function, testcase not run.\n");
  return 77;
#endif
  GNUNET_log_setup("test-gnunet-service-arm",
                   "WARNING",
                   NULL);
  GNUNET_break(GNUNET_OK ==
               GNUNET_PROGRAM_run((sizeof(argv) / sizeof(char *)) - 1,
                                  argv, "test-gnunet-service-arm",
                                  "nohelp", options,
                                  &run, NULL));
  if (0 != ret)
    {
      fprintf(stderr,
              "Test failed with error code %d\n",
              ret);
    }
  return ret;
}

/* end of test_gnunet_service_arm.c */