2 This file is part of GNUnet.
3 (C) 2011, 2012 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file core/gnunet-core.c
23 * @brief Print information about other known _connected_ peers.
24 * @author Nathan Evans
27 #include "gnunet_crypto_lib.h"
28 #include "gnunet_configuration_lib.h"
29 #include "gnunet_getopt_lib.h"
30 #include "gnunet_peerinfo_service.h"
31 #include "gnunet_transport_service.h"
32 #include "gnunet_core_service.h"
33 #include "gnunet_program_lib.h"
38 static int monitor_connections;
41 * Current number of connections in monitor mode
43 static int monitor_connections_counter;
45 static struct GNUNET_CORE_Handle *ch;
47 static struct GNUNET_PeerIdentity my_id;
50 * Task run in monitor mode when the user presses CTRL-C to abort.
51 * Stops monitoring activity.
53 * @param cls the 'struct GNUNET_TRANSPORT_PeerIterateContext *'
54 * @param tc scheduler context
57 shutdown_task (void *cls,
58 const struct GNUNET_SCHEDULER_TaskContext *tc)
62 GNUNET_CORE_disconnect (ch);
69 * Callback for retrieving a list of connected peers.
71 * @param cls closure (unused)
72 * @param peer peer identity this notification is about
75 connected_peer_callback (void *cls, const struct GNUNET_PeerIdentity *peer)
77 struct GNUNET_CRYPTO_HashAsciiEncoded enc;
81 GNUNET_CRYPTO_hash_to_enc (&peer->hashPubKey, &enc);
82 printf (_("Peer `%s'\n"), (const char *) &enc);
86 monitor_notify_startup (void *cls,
87 struct GNUNET_CORE_Handle * server,
88 const struct GNUNET_PeerIdentity *
91 my_id = (*my_identity);
96 * Function called to notify core users that another
97 * peer connected to us.
100 * @param peer the peer that connected
103 monitor_notify_connect (void *cls, const struct GNUNET_PeerIdentity *peer)
105 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get();
108 if (0 != memcmp (&my_id, peer, sizeof (my_id)))
110 monitor_connections_counter ++;
111 now_str = GNUNET_STRINGS_absolute_time_to_string (now);
112 FPRINTF (stdout, _("%24s: %-17s %4s (%u connections in total)\n"),
116 monitor_connections_counter);
122 * Function called to notify core users that another
123 * peer disconnected from us.
126 * @param peer the peer that disconnected
129 monitor_notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
131 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get();
134 if (0 != memcmp (&my_id, peer, sizeof (my_id)))
136 now_str = GNUNET_STRINGS_absolute_time_to_string (now);
138 GNUNET_assert (monitor_connections_counter > 0);
139 monitor_connections_counter--;
140 FPRINTF (stdout, _("%24s: %-17s %4s (%u connections in total)\n"),
142 _("Disconnected from"),
144 monitor_connections_counter);
151 * Main function that will be run by the scheduler.
154 * @param args remaining command-line arguments
155 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
156 * @param cfg configuration
159 run (void *cls, char *const *args, const char *cfgfile,
160 const struct GNUNET_CONFIGURATION_Handle *cfg)
162 static const struct GNUNET_CORE_MessageHandler handlers[] = {
167 FPRINTF (stderr, _("Invalid command line argument `%s'\n"), args[0]);
170 if (GNUNET_NO == monitor_connections)
171 GNUNET_CORE_iterate_peers (cfg, &connected_peer_callback, NULL);
174 memset(&my_id, '\0', sizeof (my_id));
175 ch = GNUNET_CORE_connect (cfg, NULL,
176 monitor_notify_startup,
177 monitor_notify_connect,
178 monitor_notify_disconnect,
184 GNUNET_SCHEDULER_add_now (shutdown_task, NULL);
186 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, shutdown_task, NULL);
192 * The main function to obtain peer information.
194 * @param argc number of arguments from the command line
195 * @param argv command line arguments
196 * @return 0 ok, 1 on error
199 main (int argc, char *const *argv)
202 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
203 {'m', "monitor", NULL,
204 gettext_noop ("provide information about all current connections (continuously)"),
205 0, &GNUNET_GETOPT_set_one, &monitor_connections},
206 GNUNET_GETOPT_OPTION_END
209 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
213 res = GNUNET_PROGRAM_run (argc, argv, "gnunet-core",
215 ("Print information about connected peers."),
216 options, &run, NULL);
218 GNUNET_free ((void *) argv);
220 if (GNUNET_OK == res)
226 /* end of gnunet-core.c */