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/*
This file is part of GNUnet.
(C) 2011, 2012, 2014 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 core/gnunet-core.c
* @brief Print information about other known _connected_ peers.
* @author Nathan Evans
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_core_service.h"
/**
* Option -m.
*/
static int monitor_connections;
/**
* Current number of connections in monitor mode
*/
// static unsigned int monitor_connections_counter;
/**
* Handle to the CORE monitor.
*/
static struct GNUNET_CORE_MonitorHandle *mh;
/**
* Task run in monitor mode when the user presses CTRL-C to abort.
* Stops monitoring activity.
*
* @param cls the 'struct GNUNET_TRANSPORT_PeerIterateContext *'
* @param tc scheduler context
*/
static void
shutdown_task (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
if (NULL != mh)
{
GNUNET_CORE_monitor_stop (mh);
mh = NULL;
}
}
/**
* Function called to notify core users that another
* peer changed its state with us.
*
* @param cls closure
* @param peer the peer that changed state
* @param state new state of the peer
* @param timeout timeout for the new state
*/
static void
monitor_cb (void *cls,
const struct GNUNET_PeerIdentity *peer,
enum GNUNET_CORE_KxState state,
struct GNUNET_TIME_Absolute timeout)
{
struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get();
const char *now_str;
if ( (NULL == peer) &&
(GNUNET_NO == monitor_connections) )
{
GNUNET_SCHEDULER_shutdown ();
return;
}
now_str = GNUNET_STRINGS_absolute_time_to_string (now);
FPRINTF (stdout,
_("%24s: %-17s %d %4s\n"),
now_str,
"FIXME",
state,
GNUNET_i2s (peer));
}
/**
* Function called with the result of the check if the CORE
* service is running.
*
* @param cls closure with our configuration
* @param result #GNUNET_YES if CORE is running
*/
static void
testservice_task (void *cls,
int result)
{
const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
if (GNUNET_OK != result)
{
FPRINTF (stderr, _("Service `%s' is not running\n"), "core");
return;
}
mh = GNUNET_CORE_monitor_start (cfg,
&monitor_cb,
NULL);
if (NULL == mh)
{
GNUNET_SCHEDULER_add_now (shutdown_task, NULL);
fprintf (stderr, ("Failed to connect to CORE service!\n"));
return;
}
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
&shutdown_task, NULL);
}
/**
* Main function that will be run by the scheduler.
*
* @param cls closure
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
* @param cfg configuration
*/
static void
run (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
if (NULL != args[0])
{
FPRINTF (stderr,
_("Invalid command line argument `%s'\n"),
args[0]);
return;
}
GNUNET_CLIENT_service_test ("core", cfg,
GNUNET_TIME_UNIT_SECONDS,
&testservice_task, (void *) cfg);
}
/**
* The main function to obtain peer information from CORE.
*
* @param argc number of arguments from the command line
* @param argv command line arguments
* @return 0 ok, 1 on error
*/
int
main (int argc, char *const *argv)
{
int res;
static const struct GNUNET_GETOPT_CommandLineOption options[] = {
{'m', "monitor", NULL,
gettext_noop ("provide information about all current connections (continuously)"),
0, &GNUNET_GETOPT_set_one, &monitor_connections},
GNUNET_GETOPT_OPTION_END
};
if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
return 2;
res = GNUNET_PROGRAM_run (argc, argv, "gnunet-core",
gettext_noop
("Print information about connected peers."),
options, &run, NULL);
GNUNET_free ((void *) argv);
if (GNUNET_OK == res)
return 0;
return 1;
}
/* end of gnunet-core.c */
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