2 This file is part of GNUnet.
3 (C) 2011 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-list-connections.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"
36 static int no_resolve;
39 static unsigned int peer_count;
42 static const struct GNUNET_CONFIGURATION_Handle *cfg;
44 struct AddressStringList
47 * Pointer to previous element.
49 struct AddressStringList *prev;
52 * Pointer to next element.
54 struct AddressStringList *next;
64 struct GNUNET_PeerIdentity peer;
65 struct AddressStringList *address_list_head;
66 struct AddressStringList *address_list_tail;
71 dump_pc (struct PrintContext *pc)
73 struct GNUNET_CRYPTO_HashAsciiEncoded enc;
74 struct AddressStringList *address;
76 GNUNET_CRYPTO_hash_to_enc (&pc->peer.hashPubKey, &enc);
77 printf (_("Peer `%s'\n"), (const char *) &enc);
78 while (NULL != (address = pc->address_list_head))
80 printf ("\t%s\n", address->address_string);
81 GNUNET_free (address->address_string);
82 GNUNET_CONTAINER_DLL_remove (pc->address_list_head, pc->address_list_tail,
84 GNUNET_free (address);
94 * Function to call with a human-readable format of an address
97 * @param address NULL on error, otherwise 0-terminated printable UTF-8 string
100 process_resolved_address (void *cls, const char *address)
102 struct PrintContext *pc = cls;
103 struct AddressStringList *new_address;
111 new_address = GNUNET_malloc (sizeof (struct AddressStringList));
113 fprintf (stderr, "Received address %s\n", address);
115 new_address->address_string = GNUNET_strdup (address);
116 GNUNET_CONTAINER_DLL_insert (pc->address_list_head, pc->address_list_tail,
122 * Callback for retrieving a list of connected peers.
125 connected_peer_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
126 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
128 struct PrintContext *pc;
130 if (peer != NULL) /* Not yet finished */
133 fprintf (stderr, "Learned about peer %s\n", GNUNET_i2s (peer));
136 pc = GNUNET_malloc (sizeof (struct PrintContext));
138 GNUNET_TRANSPORT_peer_address_lookup (cfg, peer, GNUNET_TIME_UNIT_MINUTES,
139 &process_resolved_address, pc);
144 fprintf (stderr, "Counted %u total connected peers.\n", peer_count);
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 c configuration
159 run (void *cls, char *const *args, const char *cfgfile,
160 const struct GNUNET_CONFIGURATION_Handle *c)
166 fprintf (stderr, _("Invalid command line argument `%s'\n"), args[0]);
170 GNUNET_CORE_iterate_peers (cfg, &connected_peer_callback, NULL);
176 * The main function to obtain peer information.
178 * @param argc number of arguments from the command line
179 * @param argv command line arguments
180 * @return 0 ok, 1 on error
183 main (int argc, char *const *argv)
185 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
186 {'n', "numeric", NULL,
187 gettext_noop ("don't resolve host names"),
188 0, &GNUNET_GETOPT_set_one, &no_resolve},
189 GNUNET_GETOPT_OPTION_END
192 GNUNET_PROGRAM_run (argc, argv, "gnunet-list-connections",
194 ("Print information about connected peers."),
195 options, &run, NULL)) ? 0 : 1;
198 /* end of gnunet-core-list-connections.c */