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-rw-r--r--src/scalarproduct/gnunet-scalarproduct.c402
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diff --git a/src/scalarproduct/gnunet-scalarproduct.c b/src/scalarproduct/gnunet-scalarproduct.c
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--- a/src/scalarproduct/gnunet-scalarproduct.c
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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2013, 2014 GNUnet e.V.
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 scalarproduct/gnunet-scalarproduct.c
23 * @brief scalarproduct client
24 * @author Christian M. Fuchs
25 */
26#define GCRYPT_NO_DEPRECATED
27#include <gcrypt.h>
28#include <inttypes.h>
29
30#include "platform.h"
31#include "gnunet_util_lib.h"
32#include "gnunet_scalarproduct_service.h"
33#include "gnunet_protocols.h"
34#include "scalarproduct.h"
35
36#define LOG(kind, ...) GNUNET_log_from (kind, "gnunet-scalarproduct", \
37 __VA_ARGS__)
38
39
40/**
41 * the session key identifying this computation
42 */
43static struct GNUNET_HashCode session_key;
44
45/**
46 * PeerID we want to compute a scalar product with
47 */
48static struct GNUNET_PeerIdentity peer_id;
49
50/**
51 * Option -p: destination peer identity for checking message-ids with
52 */
53static char *input_peer_id;
54
55/**
56 * Option -p: destination peer identity for checking message-ids with
57 */
58static char *input_session_key;
59
60/**
61 * Option -e: vector to calculate a scalarproduct with
62 */
63static char *input_elements;
64
65/**
66 * Global return value
67 */
68static int ret = -1;
69
70/**
71 * our Scalarproduct Computation handle
72 */
73static struct GNUNET_SCALARPRODUCT_ComputationHandle *computation;
74
75
76/**
77 * Callback called if we are initiating a new computation session
78 *
79 * @param cls unused
80 * @param status if our job was successfully processed
81 */
82static void
83responder_callback (void *cls,
84 enum GNUNET_SCALARPRODUCT_ResponseStatus status)
85{
86 switch (status)
87 {
88 case GNUNET_SCALARPRODUCT_STATUS_SUCCESS:
89 ret = 0;
90 LOG (GNUNET_ERROR_TYPE_INFO,
91 "Session %s concluded.\n",
92 GNUNET_h2s (&session_key));
93 break;
94
95 case GNUNET_SCALARPRODUCT_STATUS_INVALID_RESPONSE:
96 LOG (GNUNET_ERROR_TYPE_ERROR,
97 "Session %s failed: invalid response\n",
98 GNUNET_h2s (&session_key));
99 break;
100
101 case GNUNET_SCALARPRODUCT_STATUS_FAILURE:
102 LOG (GNUNET_ERROR_TYPE_ERROR,
103 "Session %s failed: service failure\n",
104 GNUNET_h2s (&session_key));
105 break;
106
107 case GNUNET_SCALARPRODUCT_STATUS_DISCONNECTED:
108 LOG (GNUNET_ERROR_TYPE_ERROR,
109 "Session %s failed: service disconnect!\n",
110 GNUNET_h2s (&session_key));
111 break;
112
113 default:
114 LOG (GNUNET_ERROR_TYPE_ERROR,
115 "Session %s failed: return code %d\n",
116 GNUNET_h2s (&session_key),
117 status);
118 }
119 computation = NULL;
120 GNUNET_SCHEDULER_shutdown ();
121}
122
123
124/**
125 * Callback called if we are initiating a new computation session
126 *
127 * @param cls unused
128 * @param status if our job was successfully processed
129 * @param result the result in gnu/gcry MPI format
130 */
131static void
132requester_callback (void *cls,
133 enum GNUNET_SCALARPRODUCT_ResponseStatus status,
134 gcry_mpi_t result)
135{
136 unsigned char *buf;
137 gcry_error_t rc;
138
139 switch (status)
140 {
141 case GNUNET_SCALARPRODUCT_STATUS_SUCCESS:
142 if (0 == (rc = gcry_mpi_aprint (GCRYMPI_FMT_HEX, &buf, NULL, result)))
143 {
144 ret = 0;
145 fprintf (stdout,
146 "%s\n",
147 buf);
148 fflush (stdout);
149 }
150 else
151 LOG_GCRY (GNUNET_ERROR_TYPE_ERROR,
152 "gcry_mpi_aprint",
153 rc);
154 break;
155
156 case GNUNET_SCALARPRODUCT_STATUS_INVALID_RESPONSE:
157 LOG (GNUNET_ERROR_TYPE_ERROR,
158 "Session %s with peer %s failed: invalid response received\n",
159 GNUNET_h2s (&session_key),
160 GNUNET_i2s (&peer_id));
161 break;
162
163 case GNUNET_SCALARPRODUCT_STATUS_FAILURE:
164 LOG (GNUNET_ERROR_TYPE_ERROR,
165 "Session %s with peer %s failed: API failure\n",
166 GNUNET_h2s (&session_key),
167 GNUNET_i2s (&peer_id));
168 break;
169
170 case GNUNET_SCALARPRODUCT_STATUS_DISCONNECTED:
171 LOG (GNUNET_ERROR_TYPE_ERROR,
172 "Session %s with peer %s was disconnected from service.\n",
173 GNUNET_h2s (&session_key),
174 GNUNET_i2s (&peer_id));
175 break;
176
177 default:
178 LOG (GNUNET_ERROR_TYPE_ERROR,
179 "Session %s with peer %s failed: return code %d\n",
180 GNUNET_h2s (&session_key),
181 GNUNET_i2s (&peer_id),
182 status);
183 }
184 computation = NULL;
185 GNUNET_SCHEDULER_shutdown ();
186}
187
188
189/**
190 * Task run during shutdown.
191 *
192 * @param cls unused
193 * @param tc unused
194 */
195static void
196shutdown_task (void *cls)
197{
198 if (NULL != computation)
199 {
200 GNUNET_SCALARPRODUCT_cancel (computation);
201 ret = 1; /* aborted */
202 }
203}
204
205
206/**
207 * Main function that will be run by the scheduler.
208 *
209 * @param cls closure
210 * @param args remaining command-line arguments
211 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
212 * @param cfg configuration
213 */
214static void
215run (void *cls,
216 char *const *args,
217 const char *cfgfile,
218 const struct GNUNET_CONFIGURATION_Handle *cfg)
219{
220 char *begin = input_elements;
221 char *end;
222 unsigned int i;
223 struct GNUNET_SCALARPRODUCT_Element *elements;
224 uint32_t element_count = 0;
225
226 if (NULL == input_elements)
227 {
228 LOG (GNUNET_ERROR_TYPE_ERROR,
229 _ ("You must specify at least one message ID to check!\n"));
230 return;
231 }
232 if ((NULL == input_session_key) ||
233 (0 == strlen (input_session_key)))
234 {
235 LOG (GNUNET_ERROR_TYPE_ERROR,
236 _ (
237 "This program needs a session identifier for comparing vectors.\n"));
238 return;
239 }
240 GNUNET_CRYPTO_hash (input_session_key,
241 strlen (input_session_key),
242 &session_key);
243 if ((NULL != input_peer_id) &&
244 (GNUNET_OK !=
245 GNUNET_CRYPTO_eddsa_public_key_from_string (input_peer_id,
246 strlen (input_peer_id),
247 &peer_id.public_key)))
248 {
249 LOG (GNUNET_ERROR_TYPE_ERROR,
250 _ ("Tried to set initiator mode, as peer ID was given. "
251 "However, `%s' is not a valid peer identifier.\n"),
252 input_peer_id);
253 return;
254 }
255 if (('\'' == *begin) &&
256 ('\'' == begin[strlen (begin) - 1]))
257 {
258 begin[strlen (begin) - 1] = '\0';
259 if (strlen (begin) > 0)
260 begin++;
261 }
262 for (end = begin; 0 != *end; end++)
263 if (*end == ';')
264 element_count++;
265 if (0 == element_count)
266 {
267 LOG (GNUNET_ERROR_TYPE_ERROR,
268 _ ("Need elements to compute the scalarproduct, got none.\n"));
269 return;
270 }
271
272 elements = GNUNET_malloc (sizeof(struct GNUNET_SCALARPRODUCT_Element)
273 * element_count);
274
275 for (i = 0; i < element_count; i++)
276 {
277 struct GNUNET_SCALARPRODUCT_Element element;
278 char*separator = NULL;
279
280 /* get the length of the current key,value; tuple */
281 for (end = begin; *end != ';'; end++)
282 if (*end == ',')
283 separator = end;
284
285 /* final element */
286 if ((NULL == separator) ||
287 (begin == separator) ||
288 (separator == end - 1))
289 {
290 LOG (GNUNET_ERROR_TYPE_ERROR,
291 _ ("Malformed input, could not parse `%s'\n"),
292 begin);
293 GNUNET_free (elements);
294 return;
295 }
296 *separator = 0;
297 /* read the element's key */
298 GNUNET_CRYPTO_hash (begin,
299 strlen (begin),
300 &element.key);
301
302 /* read the element's value */
303 if (1 !=
304 sscanf (separator + 1,
305 "%" SCNd64 ";",
306 &element.value))
307 {
308 LOG (GNUNET_ERROR_TYPE_ERROR,
309 _ ("Could not convert `%s' to int64_t.\n"),
310 begin);
311 GNUNET_free (elements);
312 return;
313 }
314 element.value = GNUNET_htonll (element.value);
315 elements[i] = element;
316 begin = end + 1;
317 }
318
319 if (((NULL != input_peer_id) &&
320 (NULL == (computation
321 = GNUNET_SCALARPRODUCT_start_computation (cfg,
322 &session_key,
323 &peer_id,
324 elements,
325 element_count,
326 &requester_callback,
327 NULL)))) ||
328 ((NULL == input_peer_id) &&
329 (NULL == (computation
330 = GNUNET_SCALARPRODUCT_accept_computation (cfg,
331 &session_key,
332 elements,
333 element_count,
334 &
335 responder_callback,
336 NULL)))))
337 {
338 fprintf (stderr,
339 _ ("Failed to initiate computation, were all keys unique?\n"));
340 GNUNET_free (elements);
341 return;
342 }
343 GNUNET_free (elements);
344 GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
345 NULL);
346 ret = 0;
347}
348
349
350/**
351 * The main function to the scalarproduct client.
352 *
353 * @param argc number of arguments from the command line
354 * @param argv command line arguments
355 * @return 0 ok, 1 on error
356 */
357int
358main (int argc, char *const *argv)
359{
360 struct GNUNET_GETOPT_CommandLineOption options[] = {
361 GNUNET_GETOPT_option_string ('e',
362 "elements",
363 "\"key1,val1;key2,val2;...,keyn,valn;\"",
364 gettext_noop (
365 "A comma separated list of elements to compare as vector with our remote peer."),
366 &input_elements),
367
368 GNUNET_GETOPT_option_string ('e',
369 "elements",
370 "\"key1,val1;key2,val2;...,keyn,valn;\"",
371 gettext_noop (
372 "A comma separated list of elements to compare as vector with our remote peer."),
373 &input_elements),
374
375 GNUNET_GETOPT_option_string ('p',
376 "peer",
377 "PEERID",
378 gettext_noop (
379 "[Optional] peer to calculate our scalarproduct with. If this parameter is not given, the service will wait for a remote peer to compute the request."),
380 &input_peer_id),
381
382 GNUNET_GETOPT_option_string ('k',
383 "key",
384 "TRANSACTION_ID",
385 gettext_noop (
386 "Transaction ID shared with peer."),
387 &input_session_key),
388
389 GNUNET_GETOPT_OPTION_END
390 };
391
392 return (GNUNET_OK ==
393 GNUNET_PROGRAM_run (argc,
394 argv,
395 "gnunet-scalarproduct",
396 gettext_noop (
397 "Calculate the Vectorproduct with a GNUnet peer."),
398 options, &run, NULL)) ? ret : 1;
399}
400
401
402/* end of gnunet-scalarproduct.c */
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