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Diffstat (limited to 'src/contrib/service/rps/gnunet-rps.c')
-rw-r--r-- | src/contrib/service/rps/gnunet-rps.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/src/contrib/service/rps/gnunet-rps.c b/src/contrib/service/rps/gnunet-rps.c new file mode 100644 index 000000000..f90fc0d88 --- /dev/null +++ b/src/contrib/service/rps/gnunet-rps.c | |||
@@ -0,0 +1,294 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
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 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file rps/gnunet-rps.c | ||
23 | * @brief random peer sampling | ||
24 | * @author Julius Bünger | ||
25 | */ | ||
26 | #include "platform.h" | ||
27 | #include "gnunet_util_lib.h" | ||
28 | #include "gnunet_rps_service.h" | ||
29 | #include <inttypes.h> | ||
30 | |||
31 | static int ret; | ||
32 | |||
33 | /** | ||
34 | * RPS handle | ||
35 | */ | ||
36 | static struct GNUNET_RPS_Handle *rps_handle; | ||
37 | |||
38 | /** | ||
39 | * Request handle | ||
40 | */ | ||
41 | static struct GNUNET_RPS_Request_Handle *req_handle; | ||
42 | |||
43 | /** | ||
44 | * PeerID (Option --seed) | ||
45 | */ | ||
46 | static struct GNUNET_PeerIdentity peer_id; | ||
47 | |||
48 | /** | ||
49 | * @brief Do we want to receive updates of the view? (Option --view) | ||
50 | */ | ||
51 | static int view_update; | ||
52 | |||
53 | /** | ||
54 | * @brief Do we want to receive updates of the view? (Option --view) | ||
55 | */ | ||
56 | static int stream_input; | ||
57 | |||
58 | /** | ||
59 | * @brief Number of updates we want to receive | ||
60 | */ | ||
61 | static uint64_t num_view_updates; | ||
62 | |||
63 | |||
64 | /** | ||
65 | * Task run when user presses CTRL-C to abort. | ||
66 | * Cancels pending request and disconnects. | ||
67 | * | ||
68 | * @param cls NULL | ||
69 | */ | ||
70 | static void | ||
71 | do_shutdown (void *cls) | ||
72 | { | ||
73 | (void) cls; | ||
74 | |||
75 | if (NULL != req_handle) | ||
76 | GNUNET_RPS_request_cancel (req_handle); | ||
77 | GNUNET_RPS_disconnect (rps_handle); | ||
78 | } | ||
79 | |||
80 | |||
81 | /** | ||
82 | * Callback called on receipt of reply. | ||
83 | * Prints replied PeerIDs. | ||
84 | * | ||
85 | * @param cls closure | ||
86 | * @param n number of peers | ||
87 | * @param recv_peers the received peers | ||
88 | */ | ||
89 | static void | ||
90 | reply_handle (void *cls, | ||
91 | uint64_t n, | ||
92 | const struct GNUNET_PeerIdentity *recv_peers) | ||
93 | { | ||
94 | uint64_t i; | ||
95 | |||
96 | (void) cls; | ||
97 | |||
98 | req_handle = NULL; | ||
99 | for (i = 0; i < n; i++) | ||
100 | { | ||
101 | fprintf (stdout, "%s\n", | ||
102 | GNUNET_i2s_full (&recv_peers[i])); | ||
103 | } | ||
104 | ret = 0; | ||
105 | |||
106 | GNUNET_SCHEDULER_shutdown (); | ||
107 | } | ||
108 | |||
109 | |||
110 | /** | ||
111 | * Callback called on receipt view update. | ||
112 | * Prints view. | ||
113 | * | ||
114 | * @param n number of peers | ||
115 | * @param recv_peers the received peers | ||
116 | */ | ||
117 | static void | ||
118 | view_update_handle (void *cls, | ||
119 | uint64_t n, | ||
120 | const struct GNUNET_PeerIdentity *recv_peers) | ||
121 | { | ||
122 | uint64_t i; | ||
123 | |||
124 | (void) cls; | ||
125 | |||
126 | if (0 == n) | ||
127 | { | ||
128 | fprintf (stdout, "Empty view\n"); | ||
129 | } | ||
130 | req_handle = NULL; | ||
131 | for (i = 0; i < n; i++) | ||
132 | { | ||
133 | fprintf (stdout, "%s\n", | ||
134 | GNUNET_i2s_full (&recv_peers[i])); | ||
135 | } | ||
136 | |||
137 | if (1 == num_view_updates) | ||
138 | { | ||
139 | ret = 0; | ||
140 | GNUNET_SCHEDULER_shutdown (); | ||
141 | } | ||
142 | else if (1 < num_view_updates) | ||
143 | { | ||
144 | num_view_updates--; | ||
145 | } | ||
146 | } | ||
147 | |||
148 | |||
149 | /** | ||
150 | * Callback called on receipt of peer from biased stream | ||
151 | * | ||
152 | * @param num_peers number of peers | ||
153 | * @param recv_peers the received peers | ||
154 | */ | ||
155 | static void | ||
156 | stream_input_handle (void *cls, | ||
157 | uint64_t num_peers, | ||
158 | const struct GNUNET_PeerIdentity *recv_peers) | ||
159 | { | ||
160 | uint64_t i; | ||
161 | |||
162 | (void) cls; | ||
163 | |||
164 | if (0 == num_peers) | ||
165 | { | ||
166 | fprintf (stdout, "No peer was returned\n"); | ||
167 | } | ||
168 | req_handle = NULL; | ||
169 | for (i = 0; i < num_peers; i++) | ||
170 | { | ||
171 | fprintf (stdout, "%s\n", | ||
172 | GNUNET_i2s_full (&recv_peers[i])); | ||
173 | } | ||
174 | } | ||
175 | |||
176 | |||
177 | /** | ||
178 | * Main function that will be run by the scheduler. | ||
179 | * | ||
180 | * @param cls closure | ||
181 | * @param args remaining command-line arguments | ||
182 | * @param cfgfile name of the configuration file used (for saving, can be NULL!) | ||
183 | * @param cfg configuration | ||
184 | */ | ||
185 | static void | ||
186 | run (void *cls, | ||
187 | char *const *args, | ||
188 | const char *cfgfile, | ||
189 | const struct GNUNET_CONFIGURATION_Handle *cfg) | ||
190 | { | ||
191 | static uint64_t num_peers; | ||
192 | static struct GNUNET_PeerIdentity zero_pid; | ||
193 | |||
194 | (void) cls; | ||
195 | (void) cfgfile; | ||
196 | |||
197 | rps_handle = GNUNET_RPS_connect (cfg); | ||
198 | if (NULL == rps_handle) | ||
199 | { | ||
200 | fprintf (stderr, "Failed to connect to the rps service\n"); | ||
201 | return; | ||
202 | } | ||
203 | |||
204 | if ((0 == memcmp (&zero_pid, &peer_id, sizeof(peer_id))) && | ||
205 | (! view_update) && | ||
206 | (! stream_input)) | ||
207 | { /* Request n PeerIDs */ | ||
208 | /* If number was specified use it, else request single peer. */ | ||
209 | if ((NULL == args[0]) || | ||
210 | (0 == sscanf (args[0], "%lu", &num_peers)) ) | ||
211 | { | ||
212 | num_peers = 1; | ||
213 | } | ||
214 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
215 | "Requesting %" PRIu64 " PeerIDs\n", num_peers); | ||
216 | req_handle = GNUNET_RPS_request_peers (rps_handle, num_peers, reply_handle, | ||
217 | NULL); | ||
218 | GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL); | ||
219 | } | ||
220 | else if (view_update) | ||
221 | { | ||
222 | /* Get updates of view */ | ||
223 | if ((NULL == args[0]) || | ||
224 | (0 == sscanf (args[0], "%lu", &num_view_updates)) ) | ||
225 | { | ||
226 | num_view_updates = 0; | ||
227 | } | ||
228 | GNUNET_RPS_view_request (rps_handle, num_view_updates, view_update_handle, | ||
229 | NULL); | ||
230 | if (0 != num_view_updates) | ||
231 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
232 | "Requesting %" PRIu64 " view updates\n", num_view_updates); | ||
233 | else | ||
234 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
235 | "Requesting continuous view updates\n"); | ||
236 | GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL); | ||
237 | } | ||
238 | else if (stream_input) | ||
239 | { | ||
240 | /* Get updates of view */ | ||
241 | GNUNET_RPS_stream_request (rps_handle, stream_input_handle, NULL); | ||
242 | GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL); | ||
243 | } | ||
244 | else | ||
245 | { /* Seed PeerID */ | ||
246 | GNUNET_RPS_seed_ids (rps_handle, 1, &peer_id); | ||
247 | fprintf (stdout, "Seeded PeerID %s\n", GNUNET_i2s_full (&peer_id)); | ||
248 | ret = 0; | ||
249 | GNUNET_SCHEDULER_add_now (&do_shutdown, NULL); | ||
250 | } | ||
251 | } | ||
252 | |||
253 | |||
254 | /** | ||
255 | * The main function to rps. | ||
256 | * | ||
257 | * @param argc number of arguments from the command line | ||
258 | * @param argv command line arguments | ||
259 | * @return 0 ok, 1 on error | ||
260 | */ | ||
261 | int | ||
262 | main (int argc, char *const *argv) | ||
263 | { | ||
264 | const char helpstr[] = | ||
265 | "Get random GNUnet peers. If none is specified a single is requested."; | ||
266 | struct GNUNET_GETOPT_CommandLineOption options[] = { | ||
267 | GNUNET_GETOPT_option_base32_auto ('s', | ||
268 | "seed", | ||
269 | "PEER_ID", | ||
270 | gettext_noop ("Seed a PeerID"), | ||
271 | &peer_id), | ||
272 | GNUNET_GETOPT_option_flag ('V', | ||
273 | "view", | ||
274 | gettext_noop ( | ||
275 | "Get updates of view (0 for infinite updates)"), | ||
276 | &view_update), | ||
277 | GNUNET_GETOPT_option_flag ('S', | ||
278 | "stream", | ||
279 | gettext_noop ("Get peers from biased stream"), | ||
280 | &stream_input), | ||
281 | GNUNET_GETOPT_OPTION_END | ||
282 | }; | ||
283 | |||
284 | return (GNUNET_OK == | ||
285 | GNUNET_PROGRAM_run (argc, | ||
286 | argv, | ||
287 | "gnunet-rps [NUMBER_OF_PEERS]", | ||
288 | gettext_noop | ||
289 | (helpstr), | ||
290 | options, &run, NULL)) ? ret : 1; | ||
291 | } | ||
292 | |||
293 | |||
294 | /* end of gnunet-rps.c */ | ||