GNUnet  0.11.x
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 
26 #define GCRYPT_NO_DEPRECATED
27 #include <gcrypt.h>
28 #include <inttypes.h>
29 
30 #include "platform.h"
31 #include "gnunet_util_lib.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 
44 
49 
53 static char *input_peer_id;
54 
58 static char *input_session_key;
59 
63 static char *input_elements;
64 
68 static int ret = -1;
69 
74 
75 
82 static void
83 responder_callback (void *cls,
85 {
86  switch (status)
87  {
89  ret = 0;
91  "Session %s concluded.\n",
93  break;
94 
97  "Session %s failed: invalid response\n",
99  break;
100 
103  "Session %s failed: service failure\n",
105  break;
106 
109  "Session %s failed: service disconnect!\n",
111  break;
112 
113  default:
115  "Session %s failed: return code %d\n",
117  status);
118  }
119  computation = NULL;
121 }
122 
123 
131 static void
134  gcry_mpi_t result)
135 {
136  unsigned char *buf;
137  gcry_error_t rc;
138 
139  switch (status)
140  {
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
152  "gcry_mpi_aprint",
153  rc);
154  break;
155 
158  "Session %s with peer %s failed: invalid response received\n",
160  GNUNET_i2s (&peer_id));
161  break;
162 
165  "Session %s with peer %s failed: API failure\n",
167  GNUNET_i2s (&peer_id));
168  break;
169 
172  "Session %s with peer %s was disconnected from service.\n",
174  GNUNET_i2s (&peer_id));
175  break;
176 
177  default:
179  "Session %s with peer %s failed: return code %d\n",
181  GNUNET_i2s (&peer_id),
182  status);
183  }
184  computation = NULL;
186 }
187 
188 
195 static void
196 shutdown_task (void *cls)
197 {
198  if (NULL != computation)
199  {
200  GNUNET_SCALARPRODUCT_cancel (computation);
201  ret = 1; /* aborted */
202  }
203 }
204 
205 
214 static void
215 run (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  {
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  {
236  _ (
237  "This program needs a session identifier for comparing vectors.\n"));
238  return;
239  }
241  strlen (input_session_key),
242  &session_key);
243  if ((NULL != input_peer_id) &&
244  (GNUNET_OK !=
246  strlen (input_peer_id),
247  &peer_id.public_key)))
248  {
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  {
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; tupel */
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  {
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  {
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
322  &session_key,
323  &peer_id,
324  elements,
325  element_count,
327  NULL)))) ||
328  ((NULL == input_peer_id) &&
329  (NULL == (computation
331  &session_key,
332  elements,
333  element_count,
334  &
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);
345  NULL);
346  ret = 0;
347 }
348 
349 
357 int
358 main (int argc, char *const *argv)
359 {
360  struct GNUNET_GETOPT_CommandLineOption options[] = {
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 
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 
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 
383  "key",
384  "TRANSACTION_ID",
385  gettext_noop (
386  "Transaction ID shared with peer."),
388 
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 */
A handle returned for each computation.
static int ret
Global return value.
static char * input_peer_id
Option -p: destination peer identity for checking message-ids with.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
static void shutdown_task(void *cls)
Task run during shutdown.
static int end
Set if we are to shutdown all services (including ARM).
Definition: gnunet-arm.c:34
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received, or when GNUNET_SCHEDULER_shutdown() is being invoked.
Definition: scheduler.c:1300
struct GNUNET_HashCode key
Key used to identify matching pairs of values to multiply.
#define LOG_GCRY(level, cmd, rc)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
Definition: scalarproduct.h:35
static void run(void *cls, char *const *args, const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
Main function that will be run by the scheduler.
struct GNUNET_SCALARPRODUCT_ComputationHandle * GNUNET_SCALARPRODUCT_accept_computation(const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_HashCode *key, const struct GNUNET_SCALARPRODUCT_Element *elements, uint32_t element_count, GNUNET_SCALARPRODUCT_ContinuationWithStatus cont, void *cont_cls)
Used by Bob&#39;s client to cooperate with Alice,.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
Definition of a command line option.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:526
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_OPTION_END
Definition: 002.c:13
static char * input_session_key
Option -p: destination peer identity for checking message-ids with.
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_string(char shortName, const char *name, const char *argumentHelp, const char *description, char **str)
Allow user to specify a string.
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
void GNUNET_SCALARPRODUCT_cancel(struct GNUNET_SCALARPRODUCT_ComputationHandle *h)
Cancel an ongoing computation or revoke our collaboration offer.
static struct GNUNET_HashCode session_key
the session key identifying this computation
Scalar Product API Message Types.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:48
static struct GNUNET_SCALARPRODUCT_ComputationHandle * computation
our Scalarproduct Computation handle
static void responder_callback(void *cls, enum GNUNET_SCALARPRODUCT_ResponseStatus status)
Callback called if we are initiating a new computation session.
uint16_t status
See PRISM_STATUS_*-constants.
static char buf[2048]
static struct GNUNET_PeerIdentity peer_id
PeerID we want to compute a scalar product with.
static int result
Global testing status.
We got disconnected from the SCALARPRODUCT service.
A 512-bit hashcode.
uint64_t GNUNET_htonll(uint64_t n)
Convert unsigned 64-bit integer to network byte order.
Definition: common_endian.c:35
int64_t value
Value to multiply in scalar product, in NBO.
int main(int argc, char *const *argv)
The main function to the scalarproduct client.
int GNUNET_CRYPTO_eddsa_public_key_from_string(const char *enc, size_t enclen, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
Convert a string representing a public key to a public key.
Definition: crypto_ecc.c:499
The identity of the host (wraps the signing key of the peer).
configuration data
Definition: configuration.c:85
static void requester_callback(void *cls, enum GNUNET_SCALARPRODUCT_ResponseStatus status, gcry_mpi_t result)
Callback called if we are initiating a new computation session.
int GNUNET_PROGRAM_run(int argc, char *const *argv, const char *binaryName, const char *binaryHelp, const struct GNUNET_GETOPT_CommandLineOption *options, GNUNET_PROGRAM_Main task, void *task_cls)
Run a standard GNUnet command startup sequence (initialize loggers and configuration, parse options).
Definition: program.c:367
static char * input_elements
Option -e: vector to calculate a scalarproduct with.
#define LOG(kind,...)
GNUNET_SCALARPRODUCT_ResponseStatus
Result status values for the computation.
struct GNUNET_SCALARPRODUCT_ComputationHandle * GNUNET_SCALARPRODUCT_start_computation(const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_HashCode *session_key, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_SCALARPRODUCT_Element *elements, uint32_t element_count, GNUNET_SCALARPRODUCT_DatumProcessor cont, void *cont_cls)
Request by Alice&#39;s client for computing a scalar product.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_malloc(size)
Wrapper around malloc.
An element key-value pair for scalarproduct.
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_CRYPTO_EddsaPublicKey public_key
#define gettext_noop(String)
Definition: gettext.h:69