GNUnet  0.11.x
gnunet-service-revocation.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2013, 2014, 2016 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 
38 #include "platform.h"
39 #include <math.h>
40 #include "gnunet_util_lib.h"
41 #include "gnunet_block_lib.h"
42 #include "gnunet_constants.h"
43 #include "gnunet_protocols.h"
44 #include "gnunet_signatures.h"
46 #include "gnunet_core_service.h"
48 #include "gnunet_setu_service.h"
49 #include "revocation.h"
50 #include <gcrypt.h>
51 
52 
56 struct PeerEntry
57 {
62 
66  struct GNUNET_PeerIdentity id;
67 
72 
77 };
78 
79 
84 
90 
94 static const struct GNUNET_CONFIGURATION_Handle *cfg;
95 
100 
105 
110 
114 static struct GNUNET_PeerIdentity my_identity;
115 
120 
125 
129 static unsigned long long revocation_work_required;
130 
135 
141 
142 
149 static struct PeerEntry *
151 {
152  struct PeerEntry *peer_entry;
153 
154  peer_entry = GNUNET_new (struct PeerEntry);
155  peer_entry->id = *peer;
158  &peer_entry->id,
159  peer_entry,
161  return peer_entry;
162 }
163 
164 
172 static int
174 {
175  struct GNUNET_REVOCATION_PowP *pow = (struct GNUNET_REVOCATION_PowP *) &rm[1];
177  (unsigned
180  {
182  "Proof of work invalid!\n");
183  GNUNET_break_op (0);
184  return GNUNET_NO;
185  }
186  return GNUNET_YES;
187 }
188 
189 
198 static void *
199 client_connect_cb (void *cls,
200  struct GNUNET_SERVICE_Client *client,
201  struct GNUNET_MQ_Handle *mq)
202 {
203  return client;
204 }
205 
206 
214 static void
216  struct GNUNET_SERVICE_Client *client,
217  void *app_cls)
218 {
219  GNUNET_assert (client == app_cls);
220 }
221 
222 
229 static void
231  const struct QueryMessage *qm)
232 {
233  struct GNUNET_SERVICE_Client *client = cls;
234  struct GNUNET_MQ_Envelope *env;
235  struct QueryResponseMessage *qrm;
236  struct GNUNET_HashCode hc;
237  int res;
238 
239  GNUNET_CRYPTO_hash (&qm->key,
240  sizeof(struct GNUNET_IDENTITY_PublicKey),
241  &hc);
243  &hc);
245  (GNUNET_NO == res)
246  ? "Received revocation check for valid key `%s' from client\n"
247  : "Received revocation check for revoked key `%s' from client\n",
248  GNUNET_h2s (&hc));
249  env = GNUNET_MQ_msg (qrm,
251  qrm->is_valid = htonl ((GNUNET_YES == res) ? GNUNET_NO : GNUNET_YES);
253  env);
255 }
256 
257 
266 static int
267 do_flood (void *cls,
268  const struct GNUNET_PeerIdentity *target,
269  void *value)
270 {
271  const struct RevokeMessage *rm = cls;
272  struct PeerEntry *pe = value;
273  struct GNUNET_MQ_Envelope *e;
274  struct RevokeMessage *cp;
275 
276  if (NULL == pe->mq)
277  return GNUNET_OK; /* peer connected to us via SET,
278  but we have no direct CORE
279  connection for flooding */
280  e = GNUNET_MQ_msg_extra (cp,
281  htonl (rm->pow_size),
283  *cp = *rm;
284  memcpy (&cp[1], &rm[1], htonl (rm->pow_size));
286  "Flooding revocation to `%s'\n",
287  GNUNET_i2s (target));
288  GNUNET_MQ_send (pe->mq,
289  e);
290  return GNUNET_OK;
291 }
292 
293 
303 static int
304 publicize_rm (const struct RevokeMessage *rm)
305 {
306  struct RevokeMessage *cp;
307  struct GNUNET_HashCode hc;
308  struct GNUNET_SETU_Element e;
309  ssize_t pklen;
310  const struct GNUNET_IDENTITY_PublicKey *pk;
311 
312  struct GNUNET_REVOCATION_PowP *pow = (struct GNUNET_REVOCATION_PowP *) &rm[1];
313  pk = (const struct GNUNET_IDENTITY_PublicKey *) &pow[1];
315  if (0 > pklen)
316  {
317  GNUNET_break_op (0);
318  return GNUNET_SYSERR;
319  }
321  pklen,
322  &hc);
323  if (GNUNET_YES ==
325  &hc))
326  {
328  "Duplicate revocation received from peer. Ignored.\n");
329  return GNUNET_OK;
330  }
331  if (GNUNET_OK !=
333  {
334  GNUNET_break_op (0);
335  return GNUNET_SYSERR;
336  }
337  /* write to disk */
338  if (sizeof(struct RevokeMessage) !=
340  rm,
341  sizeof(struct RevokeMessage)))
342  {
344  "write");
345  return GNUNET_NO;
346  }
347  if (GNUNET_OK !=
349  {
351  "sync");
352  return GNUNET_NO;
353  }
354  /* keep copy in memory */
355  cp = (struct RevokeMessage *) GNUNET_copy_message (&rm->header);
358  &hc,
359  cp,
361  /* add to set for future connections */
362  e.size = htons (rm->header.size);
363  e.element_type = GNUNET_BLOCK_TYPE_REVOCATION;
364  e.data = rm;
365  if (GNUNET_OK !=
367  &e,
368  NULL,
369  NULL))
370  {
371  GNUNET_break (0);
372  return GNUNET_OK;
373  }
374  else
375  {
377  "Added revocation info to SET\n");
378  }
379  /* flood to neighbours */
381  &do_flood,
382  cp);
383  return GNUNET_OK;
384 }
385 
386 
387 static int
389  const struct RevokeMessage *rm)
390 {
391  uint16_t size;
392 
393  size = ntohs (rm->header.size);
394  if (size <= sizeof(struct RevokeMessage) ||
395  (size > UINT16_MAX))
396  {
397  GNUNET_break (0);
398  return GNUNET_SYSERR;
399  }
400  return GNUNET_OK;
401 
402 }
403 
404 
411 static void
413  const struct RevokeMessage *rm)
414 {
415  struct GNUNET_SERVICE_Client *client = cls;
416  struct GNUNET_MQ_Envelope *env;
417  struct RevocationResponseMessage *rrm;
418  int ret;
419 
421  "Received REVOKE message from client\n");
422  if (GNUNET_SYSERR == (ret = publicize_rm (rm)))
423  {
424  GNUNET_break_op (0);
426  return;
427  }
428  env = GNUNET_MQ_msg (rrm,
430  rrm->is_valid = htonl ((GNUNET_OK == ret) ? GNUNET_NO : GNUNET_YES);
432  env);
434 }
435 
436 
437 static int
438 check_p2p_revoke (void *cls,
439  const struct RevokeMessage *rm)
440 {
441  uint16_t size;
442 
443  size = ntohs (rm->header.size);
444  if (size <= sizeof(struct RevokeMessage))
445  {
446  GNUNET_break (0);
447  return GNUNET_SYSERR;
448  }
449  return GNUNET_OK;
450 
451 }
452 
453 
460 static void
461 handle_p2p_revoke (void *cls,
462  const struct RevokeMessage *rm)
463 {
465  "Received REVOKE message\n");
467  publicize_rm (rm));
468 }
469 
470 
481 static void
482 add_revocation (void *cls,
483  const struct GNUNET_SETU_Element *element,
484  uint64_t current_size,
486 {
487  struct PeerEntry *peer_entry = cls;
488  const struct RevokeMessage *rm;
489 
490  switch (status)
491  {
493  if (element->size != sizeof(struct RevokeMessage))
494  {
495  GNUNET_break_op (0);
496  return;
497  }
499  {
501  gettext_noop (
502  "# unsupported revocations received via set union"),
503  1,
504  GNUNET_NO);
505  return;
506  }
507  rm = element->data;
508  (void) handle_p2p_revoke (NULL,
509  rm);
511  gettext_noop (
512  "# revocation messages received via set union"),
513  1, GNUNET_NO);
514  break;
517  _ ("Error computing revocation set union with %s\n"),
518  GNUNET_i2s (&peer_entry->id));
519  peer_entry->so = NULL;
521  gettext_noop ("# revocation set unions failed"),
522  1,
523  GNUNET_NO);
524  break;
526  peer_entry->so = NULL;
528  gettext_noop (
529  "# revocation set unions completed"),
530  1,
531  GNUNET_NO);
532  break;
533  default:
534  GNUNET_break (0);
535  break;
536  }
537 }
538 
539 
546 static void
547 transmit_task_cb (void *cls)
548 {
549  struct PeerEntry *peer_entry = cls;
550 
552  "Starting set exchange with peer `%s'\n",
553  GNUNET_i2s (&peer_entry->id));
554  peer_entry->transmit_task = NULL;
555  GNUNET_assert (NULL == peer_entry->so);
556  peer_entry->so = GNUNET_SETU_prepare (&peer_entry->id,
558  NULL,
559  (struct GNUNET_SETU_Option[]) { { 0 } },
561  peer_entry);
562  if (GNUNET_OK !=
563  GNUNET_SETU_commit (peer_entry->so,
565  {
567  _ ("SET service crashed, terminating revocation service\n"));
569  return;
570  }
571 }
572 
573 
581 static void *
583  const struct GNUNET_PeerIdentity *peer,
584  struct GNUNET_MQ_Handle *mq)
585 {
586  struct PeerEntry *peer_entry;
587  struct GNUNET_HashCode my_hash;
588  struct GNUNET_HashCode peer_hash;
589 
590  if (0 == GNUNET_memcmp (peer,
591  &my_identity))
592  {
593  return NULL;
594  }
595 
597  "Peer `%s' connected to us\n",
598  GNUNET_i2s (peer));
600  "# peers connected",
601  1,
602  GNUNET_NO);
604  peer);
605  if (NULL != peer_entry)
606  {
607  /* This can happen if "core"'s notification is a tad late
608  and CADET+SET were faster and already produced a
609  #handle_revocation_union_request() for us to deal
610  with. This should be rare, but isn't impossible. */
611  peer_entry->mq = mq;
612  return peer_entry;
613  }
614  peer_entry = new_peer_entry (peer);
615  peer_entry->mq = mq;
617  sizeof(my_identity),
618  &my_hash);
620  sizeof(*peer),
621  &peer_hash);
622  if (0 < GNUNET_CRYPTO_hash_cmp (&my_hash,
623  &peer_hash))
624  {
626  "Starting SET operation with peer `%s'\n",
627  GNUNET_i2s (peer));
628  peer_entry->transmit_task =
631  peer_entry);
632  }
633  return peer_entry;
634 }
635 
636 
645 static void
647  const struct GNUNET_PeerIdentity *peer,
648  void *internal_cls)
649 {
650  struct PeerEntry *peer_entry = internal_cls;
651 
652  if (0 == GNUNET_memcmp (peer,
653  &my_identity))
654  return;
655  GNUNET_assert (NULL != peer_entry);
657  "Peer `%s' disconnected from us\n",
658  GNUNET_i2s (peer));
661  peer,
662  peer_entry));
663  if (NULL != peer_entry->transmit_task)
664  {
666  peer_entry->transmit_task = NULL;
667  }
668  if (NULL != peer_entry->so)
669  {
670  GNUNET_SETU_operation_cancel (peer_entry->so);
671  peer_entry->so = NULL;
672  }
673  GNUNET_free (peer_entry);
675  "# peers connected",
676  -1,
677  GNUNET_NO);
678 }
679 
680 
689 static int
690 free_entry (void *cls,
691  const struct GNUNET_HashCode *key,
692  void *value)
693 {
694  GNUNET_free (value);
695  return GNUNET_OK;
696 }
697 
698 
704 static void
705 shutdown_task (void *cls)
706 {
707  if (NULL != revocation_set)
708  {
710  revocation_set = NULL;
711  }
712  if (NULL != revocation_union_listen_handle)
713  {
716  }
717  if (NULL != core_api)
718  {
720  core_api = NULL;
721  }
722  if (NULL != stats)
723  {
725  stats = NULL;
726  }
727  if (NULL != peers)
728  {
730  peers = NULL;
731  }
732  if (NULL != revocation_db)
733  {
735  revocation_db = NULL;
736  }
738  &free_entry,
739  NULL);
741 }
742 
743 
750 static void
751 core_init (void *cls,
752  const struct GNUNET_PeerIdentity *identity)
753 {
754  if (NULL == identity)
755  {
757  "Connection to core FAILED!\n");
759  return;
760  }
762 }
763 
764 
780 static void
782  const struct GNUNET_PeerIdentity *other_peer,
783  const struct GNUNET_MessageHeader *context_msg,
785 {
786  struct PeerEntry *peer_entry;
787 
788  if (NULL == request)
789  {
790  GNUNET_break (0);
791  return;
792  }
794  "Received set exchange request from peer `%s'\n",
795  GNUNET_i2s (other_peer));
797  other_peer);
798  if (NULL == peer_entry)
799  {
800  peer_entry = new_peer_entry (other_peer);
801  }
802  if (NULL != peer_entry->so)
803  {
804  GNUNET_break_op (0);
805  return;
806  }
807  peer_entry->so = GNUNET_SETU_accept (request,
808  (struct GNUNET_SETU_Option[]) { { 0 } },
810  peer_entry);
811  if (GNUNET_OK !=
812  GNUNET_SETU_commit (peer_entry->so,
814  {
815  GNUNET_break (0);
817  return;
818  }
819 }
820 
821 
829 static void
830 run (void *cls,
831  const struct GNUNET_CONFIGURATION_Handle *c,
833 {
834  struct GNUNET_MQ_MessageHandler core_handlers[] = {
835  GNUNET_MQ_hd_var_size (p2p_revoke,
837  struct RevokeMessage,
838  NULL),
840  };
841  char *fn;
842  uint64_t left;
843  struct RevokeMessage *rm;
844  struct GNUNET_HashCode hc;
845  const struct GNUNET_IDENTITY_PublicKey *pk;
846 
847  GNUNET_CRYPTO_hash ("revocation-set-union-application-id",
848  strlen ("revocation-set-union-application-id"),
850  if (GNUNET_OK !=
852  "REVOCATION",
853  "DATABASE",
854  &fn))
855  {
857  "REVOCATION",
858  "DATABASE");
860  return;
861  }
862  cfg = c;
864  GNUNET_NO);
865  if (GNUNET_OK !=
867  "REVOCATION",
868  "WORKBITS",
870  {
872  "REVOCATION",
873  "WORKBITS");
875  GNUNET_free (fn);
876  return;
877  }
878  if (revocation_work_required >= sizeof(struct GNUNET_HashCode) * 8)
879  {
881  "REVOCATION",
882  "WORKBITS",
883  _ ("Value is too large.\n"));
885  GNUNET_free (fn);
886  return;
887  }
888  if (GNUNET_OK !=
890  "REVOCATION",
891  "EPOCH_DURATION",
892  &epoch_duration))
893  {
895  "REVOCATION",
896  "EPOCH_DURATION");
898  GNUNET_free (fn);
899  return;
900  }
901 
907  NULL);
915  if (NULL == revocation_db)
916  {
918  "REVOCATION",
919  "DATABASE",
920  _ ("Could not open revocation database file!"));
922  GNUNET_free (fn);
923  return;
924  }
925  if (GNUNET_OK !=
927  left = 0;
928  while (left > sizeof(struct RevokeMessage))
929  {
930  rm = GNUNET_new (struct RevokeMessage);
931  if (sizeof(struct RevokeMessage) !=
933  rm,
934  sizeof(struct RevokeMessage)))
935  {
937  "read",
938  fn);
939  GNUNET_free (rm);
941  GNUNET_free (fn);
942  return;
943  }
944  struct GNUNET_REVOCATION_PowP *pow = (struct
945  GNUNET_REVOCATION_PowP *) &rm[1];
946  ssize_t ksize;
947  pk = (const struct GNUNET_IDENTITY_PublicKey *) &pow[1];
949  if (0 > ksize)
950  {
951  GNUNET_break_op (0);
952  GNUNET_free (rm);
953  GNUNET_free (fn);
954  return;
955  }
957  ksize,
958  &hc);
961  &hc,
962  rm,
964  }
965  GNUNET_free (fn);
966 
968  NULL);
970  GNUNET_YES);
971  /* Connect to core service and register core handlers */
972  core_api = GNUNET_CORE_connect (cfg, /* Main configuration */
973  NULL, /* Closure passed to functions */
974  &core_init, /* Call core_init once connected */
975  &handle_core_connect, /* Handle connects */
976  &handle_core_disconnect, /* Handle disconnects */
977  core_handlers); /* Register these handlers */
978  if (NULL == core_api)
979  {
981  return;
982  }
983  stats = GNUNET_STATISTICS_create ("revocation",
984  cfg);
985 }
986 
987 
992  ("revocation",
994  &run,
997  NULL,
998  GNUNET_MQ_hd_fixed_size (query_message,
1000  struct QueryMessage,
1001  NULL),
1002  GNUNET_MQ_hd_var_size (revoke_message,
1004  struct RevokeMessage,
1005  NULL),
1007 
1008 
1009 #if defined(__linux__) && defined(__GLIBC__)
1010 #include <malloc.h>
1011 
1015 void __attribute__ ((constructor))
1016 GNUNET_REVOCATION_memory_init ()
1017 {
1018  mallopt (M_TRIM_THRESHOLD, 4 * 1024);
1019  mallopt (M_TOP_PAD, 1 * 1024);
1020  malloc_trim (0);
1021 }
1022 
1023 
1024 #endif
1025 
1026 
1027 /* end of gnunet-service-revocation.c */
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define gettext_noop(String)
Definition: gettext.h:69
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static struct Experiment * e
static int res
struct GNUNET_HashCode key
The key used in the DHT.
uint16_t status
See PRISM_STATUS_*-constants.
enum RadiotapType __attribute__
struct GNUNET_IDENTITY_PrivateKey pk
Private key from command line option, or NULL.
static char * value
Value of the record to add/remove.
static struct GNUNET_IDENTITY_Handle * identity
Which namespace do we publish to? NULL if we do not publish to a namespace.
static struct GNUNET_SERVICE_Handle * service
Handle to our service instance.
static struct GNUNET_SETU_ListenHandle * revocation_union_listen_handle
Handle for us listening to incoming revocation set union requests.
static struct GNUNET_CONTAINER_MultiPeerMap * peers
Map of all connected peers.
GNUNET_SERVICE_MAIN("revocation", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_fixed_size(query_message, GNUNET_MESSAGE_TYPE_REVOCATION_QUERY, struct QueryMessage, NULL), GNUNET_MQ_hd_var_size(revoke_message, GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE, struct RevokeMessage, NULL), GNUNET_MQ_handler_end())
Define "main" method using service macro.
static struct GNUNET_DISK_FileHandle * revocation_db
File handle for the revocation database.
static int do_flood(void *cls, const struct GNUNET_PeerIdentity *target, void *value)
Flood the given revocation message to all neighbours.
static void transmit_task_cb(void *cls)
The timeout for performing the set union has expired, run the set operation on the revocation certifi...
static void core_init(void *cls, const struct GNUNET_PeerIdentity *identity)
Called on core init/fail.
static struct GNUNET_PeerIdentity my_identity
The peer identity of this peer.
static void handle_revoke_message(void *cls, const struct RevokeMessage *rm)
Handle REVOKE message from client.
static int publicize_rm(const struct RevokeMessage *rm)
Publicize revocation message.
static struct GNUNET_CONTAINER_MultiHashMap * revocation_map
Hash map with all revoked keys, maps the hash of the public key to the respective struct RevokeMessag...
static struct GNUNET_TIME_Relative epoch_duration
Length of an expiration expoch.
static struct GNUNET_STATISTICS_Handle * stats
Handle to the statistics service.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Handle to our current configuration.
static int verify_revoke_message(const struct RevokeMessage *rm)
An revoke message has been received, check that it is well-formed.
static int free_entry(void *cls, const struct GNUNET_HashCode *key, void *value)
Free all values in a hash map.
static void client_disconnect_cb(void *cls, struct GNUNET_SERVICE_Client *client, void *app_cls)
Handle client connecting to the service.
static void shutdown_task(void *cls)
Task run during shutdown.
static int check_revoke_message(void *cls, const struct RevokeMessage *rm)
static void handle_query_message(void *cls, const struct QueryMessage *qm)
Handle QUERY message from client.
static struct GNUNET_CORE_Handle * core_api
Handle to the core service (for flooding)
static struct PeerEntry * new_peer_entry(const struct GNUNET_PeerIdentity *peer)
Create a new PeerEntry and add it to the peers multipeermap.
static struct GNUNET_SETU_Handle * revocation_set
Set from all revocations known to us.
static void run(void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *service)
Handle network size estimate clients.
static int check_p2p_revoke(void *cls, const struct RevokeMessage *rm)
static void * client_connect_cb(void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
Handle client connecting to the service.
static struct GNUNET_HashCode revocation_set_union_app_id
Our application ID for set union operations.
static void add_revocation(void *cls, const struct GNUNET_SETU_Element *element, uint64_t current_size, enum GNUNET_SETU_Status status)
Callback for set operation results.
static void handle_core_disconnect(void *cls, const struct GNUNET_PeerIdentity *peer, void *internal_cls)
Method called whenever a peer disconnects.
static void * handle_core_connect(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
Method called whenever a peer connects.
static unsigned long long revocation_work_required
Amount of work required (W-bit collisions) for REVOCATION proofs, in collision-bits.
static void handle_revocation_union_request(void *cls, const struct GNUNET_PeerIdentity *other_peer, const struct GNUNET_MessageHeader *context_msg, struct GNUNET_SETU_Request *request)
Called when another peer wants to do a set operation with the local peer.
static void handle_p2p_revoke(void *cls, const struct RevokeMessage *rm)
Core handler for flooded revocation messages.
static struct GNUNET_VPN_RedirectionRequest * request
Opaque redirection request handle.
Definition: gnunet-vpn.c:41
#define GNUNET_log(kind,...)
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
@ GNUNET_OK
Definition: gnunet_common.h:95
@ GNUNET_YES
Definition: gnunet_common.h:97
@ GNUNET_NO
Definition: gnunet_common.h:94
@ GNUNET_SYSERR
Definition: gnunet_common.h:93
@ GNUNET_BLOCK_TYPE_REVOCATION
Block type for a revocation message by which a key is revoked.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_filename(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be the name of a file or directory.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_number(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
Get a configuration value that should be a number.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_time(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, struct GNUNET_TIME_Relative *time)
Get a configuration value that should be a relative time.
struct GNUNET_CORE_Handle * GNUNET_CORE_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, void *cls, GNUNET_CORE_StartupCallback init, GNUNET_CORE_ConnectEventHandler connects, GNUNET_CORE_DisconnectEventHandler disconnects, const struct GNUNET_MQ_MessageHandler *handlers)
Connect to the core service.
Definition: core_api.c:692
void GNUNET_CORE_disconnect(struct GNUNET_CORE_Handle *handle)
Disconnect from the core service.
Definition: core_api.c:730
struct GNUNET_DISK_FileHandle * GNUNET_DISK_file_open(const char *fn, enum GNUNET_DISK_OpenFlags flags, enum GNUNET_DISK_AccessPermissions perm)
Open a file.
Definition: disk.c:1235
ssize_t GNUNET_DISK_file_write(const struct GNUNET_DISK_FileHandle *h, const void *buffer, size_t n)
Write a buffer to a file.
Definition: disk.c:686
enum GNUNET_GenericReturnValue GNUNET_DISK_file_size(const char *filename, uint64_t *size, int include_symbolic_links, int single_file_mode)
Get the size of the file (or directory) of the given file (in bytes).
Definition: disk.c:222
enum GNUNET_GenericReturnValue GNUNET_DISK_file_sync(const struct GNUNET_DISK_FileHandle *h)
Write file changes to disk.
Definition: disk.c:1425
enum GNUNET_GenericReturnValue GNUNET_DISK_file_close(struct GNUNET_DISK_FileHandle *h)
Close an open file.
Definition: disk.c:1306
ssize_t GNUNET_DISK_file_read(const struct GNUNET_DISK_FileHandle *h, void *result, size_t len)
Read the contents of a binary file into a buffer.
Definition: disk.c:622
@ GNUNET_DISK_OPEN_CREATE
Create file if it doesn't exist.
@ GNUNET_DISK_OPEN_READWRITE
Open the file for both reading and writing.
@ GNUNET_DISK_PERM_USER_READ
Owner can read.
@ GNUNET_DISK_PERM_GROUP_READ
Group can read.
@ GNUNET_DISK_PERM_USER_WRITE
Owner can write.
@ GNUNET_DISK_PERM_OTHER_READ
Everybody can read.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:41
int GNUNET_CRYPTO_hash_cmp(const struct GNUNET_HashCode *h1, const struct GNUNET_HashCode *h2)
Compare function for HashCodes, producing a total ordering of all hashcodes.
Definition: crypto_hash.c:201
int GNUNET_CONTAINER_multihashmap_contains(const struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key)
Check if the map contains any value under the given key (including values that are NULL).
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
int GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
struct GNUNET_CONTAINER_MultiPeerMap * GNUNET_CONTAINER_multipeermap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
int GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
void * GNUNET_CONTAINER_multipeermap_get(const struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key)
Given a key find a value in the map matching the key.
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY
There must only be one value per key; storing a value should fail if a value under the same key alrea...
ssize_t GNUNET_IDENTITY_key_get_length(const struct GNUNET_IDENTITY_PublicKey *key)
Get the compacted length of a GNUNET_IDENTITY_PublicKey.
Definition: identity_api.c:976
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
void GNUNET_log_config_invalid(enum GNUNET_ErrorType kind, const char *section, const char *option, const char *required)
Log error message about invalid configuration option value.
void GNUNET_log_config_missing(enum GNUNET_ErrorType kind, const char *section, const char *option)
Log error message about missing configuration option.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
#define GNUNET_log_strerror_file(level, cmd, filename)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
@ GNUNET_ERROR_TYPE_WARNING
@ GNUNET_ERROR_TYPE_ERROR
@ GNUNET_ERROR_TYPE_DEBUG
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_MessageHeader * GNUNET_copy_message(const struct GNUNET_MessageHeader *msg)
Create a copy of the given message.
#define GNUNET_free(ptr)
Wrapper around free.
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct.
Definition: gnunet_mq_lib.h:52
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_MQ_hd_fixed_size(name, code, str, ctx)
#define GNUNET_MESSAGE_TYPE_REVOCATION_QUERY
Client to service: was this key revoked?
#define GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE
Client to service OR peer-to-peer: revoke this key!
#define GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE_RESPONSE
Service to client: revocation confirmed.
#define GNUNET_MESSAGE_TYPE_REVOCATION_QUERY_RESPONSE
Service to client: answer if key was revoked!
enum GNUNET_GenericReturnValue GNUNET_REVOCATION_check_pow(const struct GNUNET_REVOCATION_PowP *pow, unsigned int matching_bits, struct GNUNET_TIME_Relative epoch_duration)
Check if the given proof-of-work is valid.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:531
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,...
Definition: scheduler.c:1331
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1269
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2325
struct GNUNET_MQ_Handle * GNUNET_SERVICE_client_get_mq(struct GNUNET_SERVICE_Client *c)
Obtain the message queue of c.
Definition: service.c:2438
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2244
@ GNUNET_SERVICE_OPTION_NONE
Use defaults.
struct GNUNET_SETU_Handle * GNUNET_SETU_create(const struct GNUNET_CONFIGURATION_Handle *cfg)
Create an empty set, supporting the specified operation.
Definition: setu_api.c:384
void GNUNET_SETU_operation_cancel(struct GNUNET_SETU_OperationHandle *oh)
Cancel the given set operation.
Definition: setu_api.c:320
struct GNUNET_SETU_ListenHandle * GNUNET_SETU_listen(const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_HashCode *app_id, GNUNET_SETU_ListenCallback listen_cb, void *listen_cls)
Wait for set operation requests for the given application ID.
Definition: setu_api.c:729
struct GNUNET_SETU_OperationHandle * GNUNET_SETU_prepare(const struct GNUNET_PeerIdentity *other_peer, const struct GNUNET_HashCode *app_id, const struct GNUNET_MessageHeader *context_msg, const struct GNUNET_SETU_Option options[], GNUNET_SETU_ResultIterator result_cb, void *result_cls)
Prepare a set operation to be evaluated with another peer.
Definition: setu_api.c:509
void GNUNET_SETU_destroy(struct GNUNET_SETU_Handle *set)
Destroy the set handle, and free all associated resources.
Definition: setu_api.c:471
struct GNUNET_SETU_OperationHandle * GNUNET_SETU_accept(struct GNUNET_SETU_Request *request, const struct GNUNET_SETU_Option options[], GNUNET_SETU_ResultIterator result_cb, void *result_cls)
Accept a request we got via GNUNET_SETU_listen().
Definition: setu_api.c:795
int GNUNET_SETU_commit(struct GNUNET_SETU_OperationHandle *oh, struct GNUNET_SETU_Handle *set)
Commit a set to be used with a set operation.
Definition: setu_api.c:877
GNUNET_SETU_Status
Status for the result callback.
void GNUNET_SETU_listen_cancel(struct GNUNET_SETU_ListenHandle *lh)
Cancel the given listen operation.
Definition: setu_api.c:761
int GNUNET_SETU_add_element(struct GNUNET_SETU_Handle *set, const struct GNUNET_SETU_Element *element, GNUNET_SCHEDULER_TaskCallback cb, void *cb_cls)
Add an element to the given set.
Definition: setu_api.c:429
@ GNUNET_SETU_STATUS_DONE
Success, all elements have been sent (and received).
@ GNUNET_SETU_STATUS_FAILURE
The other peer refused to do the operation with us, or something went wrong.
@ GNUNET_SETU_STATUS_ADD_LOCAL
Element should be added to the result set of the local peer, i.e.
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).
#define GNUNET_TIME_UNIT_SECONDS
One second.
static unsigned int size
Size of the "table".
Definition: peer.c:67
#define _(String)
GNU gettext support macro.
Definition: platform.h:177
messages for key revocation
Internal representation of the hash map.
Internal representation of the hash map.
Context for the core service connection.
Definition: core_api.c:78
Handle used to access files (and pipes).
A 512-bit hashcode.
An identity key as per LSD0001.
Handle to a message queue.
Definition: mq.c:86
Message handler for a specific message type.
Header for all communications.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.
The identity of the host (wraps the signing key of the peer).
Struct for a proof of work as part of the revocation.
Entry in list of pending tasks.
Definition: scheduler.c:135
Handle to a client that is connected to a service.
Definition: service.c:251
Handle to a service.
Definition: service.c:117
Element stored in a set.
uint16_t element_type
Application-specific element type.
uint16_t size
Number of bytes in the buffer pointed to by data.
const void * data
Actual data of the element.
Opaque handle to a set.
Definition: setu_api.c:40
Opaque handle to a listen operation.
Definition: setu_api.c:146
Handle to an operation.
Definition: setu_api.c:95
Option for set operations.
Handle for a set operation request from another peer.
Definition: setu_api.c:75
Handle for the service.
Time for relative time used by GNUnet, in microseconds.
Per-peer information.
struct GNUNET_PeerIdentity id
What is the identity of the peer?
struct GNUNET_SCHEDULER_Task * transmit_task
Tasked used to trigger the set union operation.
struct GNUNET_SETU_OperationHandle * so
Handle to active set union operation (over revocation sets).
struct GNUNET_MQ_Handle * mq
Queue for sending messages to this peer.
Query key revocation status.
Definition: revocation.h:38
struct GNUNET_IDENTITY_PublicKey key
Key to check.
Definition: revocation.h:52
Key revocation response.
Definition: revocation.h:60
uint32_t is_valid
GNUNET_NO if revoked, GNUNET_YES if valid.
Definition: revocation.h:69
Key revocation response.
Definition: revocation.h:100
uint32_t is_valid
GNUNET_NO if revocation failed for internal reasons (e.g.
Definition: revocation.h:110
Revoke key.
Definition: revocation.h:81
struct GNUNET_MessageHeader header
Type: GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE.
Definition: revocation.h:85
uint32_t pow_size
Length of PoW with signature.
Definition: revocation.h:90
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.