GNUnet 0.21.0
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"
42#include "gnunet_block_lib.h"
43#include "gnunet_constants.h"
44#include "gnunet_protocols.h"
45#include "gnunet_signatures.h"
47#include "gnunet_core_service.h"
49#include "gnunet_setu_service.h"
50#include "revocation.h"
51#include <gcrypt.h>
52
53
57struct PeerEntry
58{
63
68
73
78};
79
80
85
91
95static const struct GNUNET_CONFIGURATION_Handle *cfg;
96
101
106
111
116
121
126
130static unsigned long long revocation_work_required;
131
136
142
143
150static struct PeerEntry *
152{
153 struct PeerEntry *peer_entry;
154
155 peer_entry = GNUNET_new (struct PeerEntry);
156 peer_entry->id = *peer;
159 &peer_entry->id,
160 peer_entry,
162 return peer_entry;
163}
164
165
175{
176 const struct GNUNET_GNSRECORD_PowP *pow
177 = (const struct GNUNET_GNSRECORD_PowP *) &rm[1];
178
179 if (GNUNET_YES !=
181 (unsigned int) revocation_work_required,
183 {
185 "Proof of work invalid!\n");
186 GNUNET_break_op (0);
187 return GNUNET_NO;
188 }
189 return GNUNET_YES;
190}
191
192
201static void *
203 struct GNUNET_SERVICE_Client *client,
204 struct GNUNET_MQ_Handle *mq)
205{
206 return client;
207}
208
209
217static void
219 struct GNUNET_SERVICE_Client *client,
220 void *app_cls)
221{
222 GNUNET_assert (client == app_cls);
223}
224
225
226static int
228 const struct QueryMessage *qm)
229{
230 uint16_t size;
231
232 size = ntohs (qm->header.size);
233 if (size <= sizeof(struct RevokeMessage) ||
234 (size > UINT16_MAX))
235 {
236 GNUNET_break (0);
237 return GNUNET_SYSERR;
238 }
239 return GNUNET_OK;
240
241}
242
243
250static void
252 const struct QueryMessage *qm)
253{
254 struct GNUNET_SERVICE_Client *client = cls;
255 struct GNUNET_CRYPTO_PublicKey zone;
256 struct GNUNET_MQ_Envelope *env;
257 struct QueryResponseMessage *qrm;
258 struct GNUNET_HashCode hc;
259 int res;
260 size_t key_len;
261 size_t read;
262
263 key_len = ntohl (qm->key_len);
264 if ((GNUNET_SYSERR ==
266 &zone, &read)) ||
267 (read != key_len))
268 {
270 "Unable to parse query public key\n");
272 return;
273 }
274 GNUNET_CRYPTO_hash (&qm[1],
275 key_len,
276 &hc);
278 &hc);
280 (GNUNET_NO == res)
281 ? "Received revocation check for valid key `%s' from client\n"
282 : "Received revocation check for revoked key `%s' from client\n",
283 GNUNET_h2s (&hc));
284 env = GNUNET_MQ_msg (qrm,
286 qrm->is_valid = htonl ((GNUNET_YES == res) ? GNUNET_NO : GNUNET_YES);
288 env);
290}
291
292
302do_flood (void *cls,
303 const struct GNUNET_PeerIdentity *target,
304 void *value)
305{
306 const struct RevokeMessage *rm = cls;
307 struct PeerEntry *pe = value;
308 struct GNUNET_MQ_Envelope *e;
309 struct RevokeMessage *cp;
310
311 if (NULL == pe->mq)
312 return GNUNET_OK; /* peer connected to us via SET,
313 but we have no direct CORE
314 connection for flooding */
315 e = GNUNET_MQ_msg_extra (cp,
316 htonl (rm->pow_size),
318 *cp = *rm;
319 memcpy (&cp[1],
320 &rm[1],
321 htonl (rm->pow_size));
323 "Flooding revocation to `%s'\n",
324 GNUNET_i2s (target));
325 GNUNET_MQ_send (pe->mq,
326 e);
327 return GNUNET_OK;
328}
329
330
341publicize_rm (const struct RevokeMessage *rm)
342{
343 struct RevokeMessage *cp;
344 struct GNUNET_HashCode hc;
345 struct GNUNET_SETU_Element e;
346 ssize_t pklen;
347 const struct GNUNET_GNSRECORD_PowP *pow
348 = (const struct GNUNET_GNSRECORD_PowP *) &rm[1];
349 const struct GNUNET_CRYPTO_PublicKey *pk
350 = (const struct GNUNET_CRYPTO_PublicKey *) &pow[1];
351
354 if (0 > pklen)
355 {
356 GNUNET_break_op (0);
357 return GNUNET_SYSERR;
358 }
360 pklen,
361 &hc);
362 if (GNUNET_YES ==
364 &hc))
365 {
367 "Duplicate revocation received from peer. Ignored.\n");
368 return GNUNET_OK;
369 }
370 if (GNUNET_OK !=
372 {
373 GNUNET_break_op (0);
374 return GNUNET_SYSERR;
375 }
376 /* write to disk */
377 if (sizeof(struct RevokeMessage) !=
379 rm,
380 sizeof(struct RevokeMessage)))
381 {
383 "write");
384 return GNUNET_NO;
385 }
386 if (GNUNET_OK !=
388 {
390 "sync");
391 return GNUNET_NO;
392 }
393 /* keep copy in memory */
394 cp = (struct RevokeMessage *) GNUNET_copy_message (&rm->header);
397 &hc,
398 cp,
400 /* add to set for future connections */
401 e.size = htons (rm->header.size);
403 e.data = rm;
404 if (GNUNET_OK !=
406 &e,
407 NULL,
408 NULL))
409 {
410 GNUNET_break (0);
411 return GNUNET_OK;
412 }
413 else
414 {
416 "Added revocation info to SET\n");
417 }
418 /* flood to neighbours */
420 &do_flood,
421 cp);
422 return GNUNET_OK;
423}
424
425
426static int
428 const struct RevokeMessage *rm)
429{
430 uint16_t size;
431
432 size = ntohs (rm->header.size);
433 if (size <= sizeof(struct RevokeMessage) ||
434 (size > UINT16_MAX))
435 {
436 GNUNET_break (0);
437 return GNUNET_SYSERR;
438 }
439 return GNUNET_OK;
440
441}
442
443
450static void
452 const struct RevokeMessage *rm)
453{
454 struct GNUNET_SERVICE_Client *client = cls;
455 struct GNUNET_MQ_Envelope *env;
456 struct RevocationResponseMessage *rrm;
457 int ret;
458
460 "Received REVOKE message from client\n");
461 if (GNUNET_SYSERR == (ret = publicize_rm (rm)))
462 {
463 GNUNET_break_op (0);
465 return;
466 }
467 env = GNUNET_MQ_msg (rrm,
469 rrm->is_valid = htonl ((GNUNET_OK == ret) ? GNUNET_NO : GNUNET_YES);
471 env);
473}
474
475
476static int
478 const struct RevokeMessage *rm)
479{
480 uint16_t size;
481
482 size = ntohs (rm->header.size);
483 if (size <= sizeof(struct RevokeMessage))
484 {
485 GNUNET_break (0);
486 return GNUNET_SYSERR;
487 }
488 return GNUNET_OK;
489
490}
491
492
499static void
501 const struct RevokeMessage *rm)
502{
504 "Received REVOKE message\n");
506 publicize_rm (rm));
507}
508
509
520static void
521add_revocation (void *cls,
522 const struct GNUNET_SETU_Element *element,
523 uint64_t current_size,
525{
526 struct PeerEntry *peer_entry = cls;
527 const struct RevokeMessage *rm;
528
529 switch (status)
530 {
532 if (element->size != sizeof(struct RevokeMessage))
533 {
534 GNUNET_break_op (0);
535 return;
536 }
538 {
541 "# unsupported revocations received via set union"),
542 1,
543 GNUNET_NO);
544 return;
545 }
546 rm = element->data;
547 (void) handle_p2p_revoke (NULL,
548 rm);
551 "# revocation messages received via set union"),
552 1, GNUNET_NO);
553 break;
556 _ ("Error computing revocation set union with %s\n"),
557 GNUNET_i2s (&peer_entry->id));
558 peer_entry->so = NULL;
560 gettext_noop ("# revocation set unions failed"),
561 1,
562 GNUNET_NO);
563 break;
565 peer_entry->so = NULL;
568 "# revocation set unions completed"),
569 1,
570 GNUNET_NO);
571 break;
572 default:
573 GNUNET_break (0);
574 break;
575 }
576}
577
578
585static void
587{
588 struct PeerEntry *peer_entry = cls;
589
591 "Starting set exchange with peer `%s'\n",
592 GNUNET_i2s (&peer_entry->id));
593 peer_entry->transmit_task = NULL;
594 GNUNET_assert (NULL == peer_entry->so);
595 peer_entry->so = GNUNET_SETU_prepare (&peer_entry->id,
597 NULL,
598 (struct GNUNET_SETU_Option[]) { { 0 } },
600 peer_entry);
601 if (GNUNET_OK !=
602 GNUNET_SETU_commit (peer_entry->so,
604 {
606 _ ("SET service crashed, terminating revocation service\n"));
608 return;
609 }
610}
611
612
620static void *
622 const struct GNUNET_PeerIdentity *peer,
623 struct GNUNET_MQ_Handle *mq)
624{
625 struct PeerEntry *peer_entry;
626 struct GNUNET_HashCode my_hash;
627 struct GNUNET_HashCode peer_hash;
628
629 if (0 == GNUNET_memcmp (peer,
630 &my_identity))
631 {
632 return NULL;
633 }
634
636 "Peer `%s' connected to us\n",
637 GNUNET_i2s (peer));
639 "# peers connected",
640 1,
641 GNUNET_NO);
643 peer);
644 if (NULL != peer_entry)
645 {
646 /* This can happen if "core"'s notification is a tad late
647 and CADET+SET were faster and already produced a
648 #handle_revocation_union_request() for us to deal
649 with. This should be rare, but isn't impossible. */
650 peer_entry->mq = mq;
651 return peer_entry;
652 }
653 peer_entry = new_peer_entry (peer);
654 peer_entry->mq = mq;
656 sizeof(my_identity),
657 &my_hash);
658 GNUNET_CRYPTO_hash (peer,
659 sizeof(*peer),
660 &peer_hash);
661 if (0 < GNUNET_CRYPTO_hash_cmp (&my_hash,
662 &peer_hash))
663 {
665 "Starting SET operation with peer `%s'\n",
666 GNUNET_i2s (peer));
667 peer_entry->transmit_task =
670 peer_entry);
671 }
672 return peer_entry;
673}
674
675
684static void
686 const struct GNUNET_PeerIdentity *peer,
687 void *internal_cls)
688{
689 struct PeerEntry *peer_entry = internal_cls;
690
691 if (0 == GNUNET_memcmp (peer,
692 &my_identity))
693 return;
694 GNUNET_assert (NULL != peer_entry);
696 "Peer `%s' disconnected from us\n",
697 GNUNET_i2s (peer));
700 peer,
701 peer_entry));
702 if (NULL != peer_entry->transmit_task)
703 {
705 peer_entry->transmit_task = NULL;
706 }
707 if (NULL != peer_entry->so)
708 {
709 GNUNET_SETU_operation_cancel (peer_entry->so);
710 peer_entry->so = NULL;
711 }
712 GNUNET_free (peer_entry);
714 "# peers connected",
715 -1,
716 GNUNET_NO);
717}
718
719
728static int
729free_entry (void *cls,
730 const struct GNUNET_HashCode *key,
731 void *value)
732{
734 return GNUNET_OK;
735}
736
737
743static void
744shutdown_task (void *cls)
745{
746 if (NULL != revocation_set)
747 {
749 revocation_set = NULL;
750 }
752 {
755 }
756 if (NULL != core_api)
757 {
759 core_api = NULL;
760 }
761 if (NULL != stats)
762 {
764 stats = NULL;
765 }
766 if (NULL != peers)
767 {
769 peers = NULL;
770 }
771 if (NULL != revocation_db)
772 {
774 revocation_db = NULL;
775 }
777 &free_entry,
778 NULL);
780}
781
782
789static void
790core_init (void *cls,
791 const struct GNUNET_PeerIdentity *identity)
792{
793 if (NULL == identity)
794 {
796 "Connection to core FAILED!\n");
798 return;
799 }
801}
802
803
819static void
821 const struct GNUNET_PeerIdentity *other_peer,
822 const struct GNUNET_MessageHeader *context_msg,
824{
825 struct PeerEntry *peer_entry;
826
827 if (NULL == request)
828 {
829 GNUNET_break (0);
830 return;
831 }
833 "Received set exchange request from peer `%s'\n",
834 GNUNET_i2s (other_peer));
836 other_peer);
837 if (NULL == peer_entry)
838 {
839 peer_entry = new_peer_entry (other_peer);
840 }
841 if (NULL != peer_entry->so)
842 {
843 GNUNET_break_op (0);
844 return;
845 }
846 peer_entry->so = GNUNET_SETU_accept (request,
847 (struct GNUNET_SETU_Option[]) { { 0 } },
849 peer_entry);
850 if (GNUNET_OK !=
851 GNUNET_SETU_commit (peer_entry->so,
853 {
854 GNUNET_break (0);
856 return;
857 }
858}
859
860
868static void
869run (void *cls,
870 const struct GNUNET_CONFIGURATION_Handle *c,
872{
873 struct GNUNET_MQ_MessageHandler core_handlers[] = {
874 GNUNET_MQ_hd_var_size (p2p_revoke,
876 struct RevokeMessage,
877 NULL),
879 };
880 char *fn;
881 uint64_t left;
882 struct RevokeMessage *rm;
883 struct GNUNET_HashCode hc;
884 const struct GNUNET_CRYPTO_PublicKey *pk;
885
886 GNUNET_CRYPTO_hash ("revocation-set-union-application-id",
887 strlen ("revocation-set-union-application-id"),
889 if (GNUNET_OK !=
891 "REVOCATION",
892 "DATABASE",
893 &fn))
894 {
896 "REVOCATION",
897 "DATABASE");
899 return;
900 }
901 cfg = c;
903 GNUNET_NO);
905 NULL);
906 if (GNUNET_OK !=
908 "REVOCATION",
909 "WORKBITS",
911 {
913 "REVOCATION",
914 "WORKBITS");
916 GNUNET_free (fn);
917 return;
918 }
919 if (revocation_work_required >= sizeof(struct GNUNET_HashCode) * 8)
920 {
922 "REVOCATION",
923 "WORKBITS",
924 _ ("Value is too large.\n"));
926 GNUNET_free (fn);
927 return;
928 }
929 if (GNUNET_OK !=
931 "REVOCATION",
932 "EPOCH_DURATION",
934 {
936 "REVOCATION",
937 "EPOCH_DURATION");
939 GNUNET_free (fn);
940 return;
941 }
942
948 NULL);
956 if (NULL == revocation_db)
957 {
959 "REVOCATION",
960 "DATABASE",
961 _ ("Could not open revocation database file!"));
963 GNUNET_free (fn);
964 return;
965 }
966 if (GNUNET_OK !=
968 left = 0;
969 while (left > sizeof(struct RevokeMessage))
970 {
971 rm = GNUNET_new (struct RevokeMessage);
972 if (sizeof(struct RevokeMessage) !=
974 rm,
975 sizeof(struct RevokeMessage)))
976 {
978 "read",
979 fn);
980 GNUNET_free (rm);
982 GNUNET_free (fn);
983 return;
984 }
985 struct GNUNET_GNSRECORD_PowP *pow = (struct
986 GNUNET_GNSRECORD_PowP *) &rm[1];
987 ssize_t ksize;
988 pk = (const struct GNUNET_CRYPTO_PublicKey *) &pow[1];
990 if (0 > ksize)
991 {
992 GNUNET_break_op (0);
993 GNUNET_free (rm);
994 GNUNET_free (fn);
995 return;
996 }
998 ksize,
999 &hc);
1002 &hc,
1003 rm,
1005 }
1006 GNUNET_free (fn);
1007
1009 GNUNET_YES);
1010 /* Connect to core service and register core handlers */
1011 core_api = GNUNET_CORE_connect (cfg, /* Main configuration */
1012 NULL, /* Closure passed to functions */
1013 &core_init, /* Call core_init once connected */
1014 &handle_core_connect, /* Handle connects */
1015 &handle_core_disconnect, /* Handle disconnects */
1016 core_handlers); /* Register these handlers */
1017 if (NULL == core_api)
1018 {
1020 return;
1021 }
1022 stats = GNUNET_STATISTICS_create ("revocation",
1023 cfg);
1024}
1025
1026
1031 ("revocation",
1033 &run,
1036 NULL,
1037 GNUNET_MQ_hd_var_size (query_message,
1039 struct QueryMessage,
1040 NULL),
1041 GNUNET_MQ_hd_var_size (revoke_message,
1043 struct RevokeMessage,
1044 NULL),
1046
1047
1048#if defined(__linux__) && defined(__GLIBC__)
1049#include <malloc.h>
1050
1054void __attribute__ ((constructor))
1055GNUNET_REVOCATION_memory_init ()
1056{
1057 mallopt (M_TRIM_THRESHOLD, 4 * 1024);
1058 mallopt (M_TOP_PAD, 1 * 1024);
1059 malloc_trim (0);
1060}
1061
1062
1063#endif
1064
1065
1066/* 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:70
static int ret
Final status code.
Definition: gnunet-arm.c:94
struct GNUNET_HashCode key
The key used in the DHT.
struct GNUNET_CRYPTO_PrivateKey pk
Private key from command line option, or NULL.
static char * res
Currently read line or NULL on EOF.
static char * value
Value of the record to add/remove.
static int status
The program status; 0 for success.
Definition: gnunet-nse.c:38
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.
static struct GNUNET_DISK_FileHandle * revocation_db
File handle for the revocation database.
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 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 free_entry(void *cls, const struct GNUNET_HashCode *key, void *value)
Free all values in a hash map.
static struct PeerEntry * new_peer_entry(const struct GNUNET_PeerIdentity *peer)
Create a new PeerEntry and add it to the peers multipeermap.
static void * handle_core_connect(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
Method called whenever a peer connects.
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 void * client_connect_cb(void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
Handle client connecting to the service.
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 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 enum GNUNET_GenericReturnValue publicize_rm(const struct RevokeMessage *rm)
Publicize revocation message.
static int check_p2p_revoke(void *cls, const struct RevokeMessage *rm)
static enum GNUNET_GenericReturnValue do_flood(void *cls, const struct GNUNET_PeerIdentity *target, void *value)
Flood the given revocation message to all neighbours.
static struct GNUNET_HashCode revocation_set_union_app_id
Our application ID for set union operations.
static enum GNUNET_GenericReturnValue verify_revoke_message(const struct RevokeMessage *rm)
An revoke message has been received, check that it is well-formed.
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.
GNUNET_SERVICE_MAIN("revocation", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_var_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 int check_query_message(void *cls, const struct QueryMessage *qm)
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:40
Library for data block manipulation.
Core service; the main API for encrypted P2P communications.
API that can be used to manipulate GNS record data.
struct GNUNET_PQ_ResultSpec __attribute__
Constants for network protocols.
API to perform and access key revocations.
Two-peer set union operations.
API to create, modify and access statistics.
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:691
void GNUNET_CORE_disconnect(struct GNUNET_CORE_Handle *handle)
Disconnect from the core service.
Definition: core_api.c:729
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:1237
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:221
enum GNUNET_GenericReturnValue GNUNET_DISK_file_sync(const struct GNUNET_DISK_FileHandle *h)
Write file changes to disk.
Definition: disk.c:1427
enum GNUNET_GenericReturnValue GNUNET_DISK_file_close(struct GNUNET_DISK_FileHandle *h)
Close an open file.
Definition: disk.c:1308
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.
enum GNUNET_GenericReturnValue GNUNET_GNSRECORD_check_pow(const struct GNUNET_GNSRECORD_PowP *pow, unsigned int matching_bits, struct GNUNET_TIME_Relative epoch_duration)
Check if the given proof-of-work is valid.
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:221
enum GNUNET_GenericReturnValue 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_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_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MultiHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
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.
enum GNUNET_GenericReturnValue 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.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash 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).
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.
enum GNUNET_GenericReturnValue 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.
@ 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_CRYPTO_public_key_get_length(const struct GNUNET_CRYPTO_PublicKey *key)
Get the compacted length of a GNUNET_CRYPTO_PublicKey.
Definition: crypto_pkey.c:68
#define GNUNET_log(kind,...)
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_read_public_key_from_buffer(const void *buffer, size_t len, struct GNUNET_CRYPTO_PublicKey *key, size_t *read)
Reads a GNUNET_CRYPTO_PublicKey from a compact buffer.
Definition: crypto_pkey.c:103
GNUNET_GenericReturnValue
Named constants for return values.
@ GNUNET_OK
@ GNUNET_YES
@ GNUNET_NO
@ GNUNET_SYSERR
#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
struct GNUNET_MessageHeader * GNUNET_copy_message(const struct GNUNET_MessageHeader *msg)
Create a copy of the given message.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#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:304
#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:63
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:78
#define GNUNET_MQ_hd_var_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!
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:562
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:1334
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:975
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:1272
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2489
struct GNUNET_MQ_Handle * GNUNET_SERVICE_client_get_mq(struct GNUNET_SERVICE_Client *c)
Obtain the message queue of c.
Definition: service.c:2602
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2408
@ 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_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:497
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:769
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:851
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:717
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:749
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:68
#define _(String)
GNU gettext support macro.
Definition: platform.h:178
messages for key revocation
@ GNUNET_BLOCK_TYPE_REVOCATION
Block type for a revocation message by which a key is revoked.
Internal representation of the hash map.
Internal representation of the hash map.
Context for the core service connection.
Definition: core_api.c:78
An identity key as per LSD0001.
Handle used to access files (and pipes).
Struct for a proof of work as part of the revocation.
uint64_t pow[32]
The PoWs.
A 512-bit hashcode.
Handle to a message queue.
Definition: mq.c:87
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).
Entry in list of pending tasks.
Definition: scheduler.c:136
Handle to a client that is connected to a service.
Definition: service.c:252
Handle to a service.
Definition: service.c:118
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.
Definition: peer.c:34
struct GNUNET_PeerIdentity id
The identifier itself.
Definition: peer.c:38
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
uint32_t key_len
Key length.
Definition: revocation.h:47
struct GNUNET_MessageHeader header
Type: GNUNET_MESSAGE_TYPE_REVOCATION_QUERY.
Definition: revocation.h:42
Key revocation response.
Definition: revocation.h:59
uint32_t is_valid
GNUNET_NO if revoked, GNUNET_YES if valid.
Definition: revocation.h:68
Key revocation response.
Definition: revocation.h:99
uint32_t is_valid
GNUNET_NO if revocation failed for internal reasons (e.g.
Definition: revocation.h:109
Revoke key.
Definition: revocation.h:80
struct GNUNET_MessageHeader header
Type: GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE.
Definition: revocation.h:84
uint32_t pow_size
Length of PoW with signature.
Definition: revocation.h:89