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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 */