2 This file is part of GNUnet.
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.
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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., 51 Franklin Street, Fifth Floor,
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22 * @file rps/gnunet-rps.c
23 * @brief random peer sampling
24 * @author Julius Bünger
27 #include "gnunet_util_lib.h"
28 #include "gnunet_rps_service.h"
36 static struct GNUNET_RPS_Handle *rps_handle;
41 static struct GNUNET_RPS_Request_Handle *req_handle;
44 * PeerID in string representation (Option --seed)
46 static char *peer_id_str;
50 * Task run when user presses CTRL-C to abort.
51 * Cancels pending request and disconnects.
56 do_shutdown (void *cls)
58 if (NULL != req_handle)
59 GNUNET_RPS_request_cancel (req_handle);
60 GNUNET_RPS_disconnect (rps_handle);
65 * Callback called on receipt of reply.
66 * Prints replied PeerIDs.
69 * @param n number of peers
70 * @param recv_peers the received peers
73 reply_handle (void *cls,
75 const struct GNUNET_PeerIdentity *recv_peers)
80 for (i = 0; i < n; i++)
82 FPRINTF (stdout, "%s\n",
83 GNUNET_i2s_full (&recv_peers[i]));
87 GNUNET_SCHEDULER_shutdown ();
92 * Main function that will be run by the scheduler.
95 * @param args remaining command-line arguments
96 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
97 * @param cfg configuration
103 const struct GNUNET_CONFIGURATION_Handle *cfg)
105 static uint64_t num_peers;
106 struct GNUNET_PeerIdentity peer_id;
108 rps_handle = GNUNET_RPS_connect (cfg);
110 if (NULL == peer_id_str)
111 { /* Request n PeerIDs */
112 /* If number was specified use it, else request single peer. */
113 num_peers = (NULL == args[0]) ? 1 : atoi (args[0]);
114 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
115 "Requesting %" PRIu64 " PeerIDs\n", num_peers);
116 req_handle = GNUNET_RPS_request_peers (rps_handle, num_peers, reply_handle, NULL);
117 GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL);
122 GNUNET_CRYPTO_eddsa_public_key_from_string (peer_id_str,
123 strlen (peer_id_str),
124 &peer_id.public_key))
127 _("Failed to parse peer identity `%s'\n"),
131 GNUNET_RPS_seed_ids (rps_handle, 1, &peer_id);
132 FPRINTF (stdout, "Seeded PeerID %s\n", GNUNET_i2s_full (&peer_id));
134 GNUNET_SCHEDULER_add_now (&do_shutdown, NULL);
139 * The main function to rps.
141 * @param argc number of arguments from the command line
142 * @param argv command line arguments
143 * @return 0 ok, 1 on error
146 main (int argc, char *const *argv)
148 const char helpstr[] =
149 "Get random GNUnet peers. If none is specified a single is requested.";
150 struct GNUNET_GETOPT_CommandLineOption options[] = {
151 GNUNET_GETOPT_OPTION_STRING ('s',
154 gettext_noop ("Seed a PeerID"),
156 GNUNET_GETOPT_OPTION_END
159 GNUNET_PROGRAM_run (argc,
161 "gnunet-rps [NUMBER_OF_PEERS]",
164 options, &run, NULL)) ? ret : 1;
167 /* end of gnunet-rps.c */