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/*
     This file is part of GNUnet.
     (C) 2009 Christian Grothoff (and other contributing authors)

     GNUnet is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published
     by the Free Software Foundation; either version 3, 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
     General Public License for more details.

     You should have received a copy of the GNU General Public License
     along with GNUnet; see the file COPYING.  If not, write to the
     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
*/
/**
 * @file arm/test_gnunet_service_manager.c (A mockup testcase, not functionally complete)
 * @brief testcase for gnunet-service-manager.c
 */

#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)

#define START_ARM GNUNET_YES

#define VERBOSE GNUNET_EXTRA_LOGGING

static int ret = 1;


static const struct GNUNET_CONFIGURATION_Handle *cfg;

#if START_ARM
static struct GNUNET_ARM_Handle *arm;
#endif

static void
arm_stopped (void *cls, enum GNUNET_ARM_ProcessStatus success)
{
  if (success != GNUNET_ARM_PROCESS_DOWN)
    {
      GNUNET_break (0);
      ret = 4;
    }
  else
    {
      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ARM stopped\n");
    }
#if START_ARM
  GNUNET_ARM_disconnect (arm);
  arm = NULL;
#endif
}

static void
hostNameResolveCB (void *cls, const struct sockaddr *addr, socklen_t addrlen)
{
  if ((ret == 0) || (ret == 4))
    return;
  if (NULL == addr)
    {
      GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Name not resolved!\n");
#if START_ARM
      GNUNET_ARM_stop_service (arm, "arm", TIMEOUT, &arm_stopped, NULL);
#endif
      ret = 3;
      return;
    }
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
	      "Resolved hostname, now stopping ARM\n");
  ret = 0;
#if START_ARM
  GNUNET_ARM_stop_service (arm, "arm", TIMEOUT, &arm_stopped, NULL);
#endif
}


static void
arm_notify (void *cls, enum GNUNET_ARM_ProcessStatus success)
{
  if (success != GNUNET_ARM_PROCESS_STARTING)
    {
      GNUNET_break (0);
      ret = 1;
      return;
    }
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
	      "Trying to resolve our own hostname!\n");
  /* connect to the resolver service */
  if (NULL ==
      GNUNET_RESOLVER_hostname_resolve (AF_UNSPEC, TIMEOUT,
					&hostNameResolveCB, NULL))
    {
      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
		  "Unable initiate connection to resolver service\n");
      ret = 2;
#if START_ARM
      GNUNET_ARM_stop_service (arm, "arm", TIMEOUT, &arm_stopped, NULL);
#endif
    }
}


static void
run (void *cls, char *const *args, const char *cfgfile,
     const struct GNUNET_CONFIGURATION_Handle *c)
{
  cfg = c;
#if START_ARM
  arm = GNUNET_ARM_connect (cfg, NULL);
  GNUNET_ARM_start_service (arm, "arm", START_TIMEOUT, &arm_notify, NULL);
#else
  arm_notify (NULL, GNUNET_YES);
#endif
}


static void
check ()
{
  char *const argv[] = {
    "test-gnunet-service-manager",
    "-c", "test_arm_api_data.conf",
#if VERBOSE
    "-L", "DEBUG",
#endif
    NULL
  };
  struct GNUNET_GETOPT_CommandLineOption options[] = {
    GNUNET_GETOPT_OPTION_END
  };
  GNUNET_assert (GNUNET_OK ==
		 GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
				     argv, "test-gnunet-service-manager",
				     "nohelp", options, &run, NULL));
}


int
main (int argc, char *argv[])
{
  char hostname[GNUNET_OS_get_hostname_max_length () + 1];

  if (0 != gethostname (hostname, sizeof (hostname) - 1))
    {
      GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
			   "gethostname");
      fprintf (stderr,
	       "Failed to determine my own hostname, testcase not run.\n");
      return 0;
    }
  if (NULL == gethostbyname (hostname))
    {
      fprintf (stderr,
	       "Failed to resolve my hostname `%s', testcase not run.\n",
	       hostname);
      return 0;
    }

  GNUNET_log_setup ("test-gnunet-service-manager",
#if VERBOSE
		    "DEBUG",
#else
		    "WARNING",
#endif
		    NULL);
  check ();
  return ret;
}