2 This file is part of GNUnet.
3 Copyright (C) 2011-2013 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
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 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
21 * @file gns/gnunet-service-gns.c
22 * @brief GNU Name System (main service)
23 * @author Martin Schanzenbach
24 * @author Christian Grothoff
27 #include "gnunet_util_lib.h"
28 #include "gnunet_dns_service.h"
29 #include "gnunet_dnsparser_lib.h"
30 #include "gnunet_dht_service.h"
31 #include "gnunet_namecache_service.h"
32 #include "gnunet_namestore_service.h"
33 #include "gnunet_identity_service.h"
34 #include "gnunet_gns_service.h"
35 #include "gnunet_statistics_service.h"
37 #include "gnunet-service-gns_resolver.h"
38 #include "gnunet-service-gns_shorten.h"
39 #include "gnunet-service-gns_interceptor.h"
40 #include "gnunet_protocols.h"
43 * The initial interval in milliseconds btween puts in
46 #define INITIAL_PUT_INTERVAL GNUNET_TIME_UNIT_MILLISECONDS
49 * The upper bound for the zone iteration interval in milliseconds
51 #define MINIMUM_ZONE_ITERATION_INTERVAL GNUNET_TIME_UNIT_SECONDS
54 * The default put interval for the zone iteration. In case
57 #define DEFAULT_ZONE_PUBLISH_TIME_WINDOW GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 4)
60 * The factor the current zone iteration interval is divided by for each
61 * additional new record
63 #define LATE_ITERATION_SPEEDUP_FACTOR 2
66 * How long until a DHT PUT attempt should time out?
68 #define DHT_OPERATION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
71 * What replication level do we use for DHT PUT operations?
73 #define DHT_GNS_REPLICATION_LEVEL 5
77 * Handle to a lookup operation from api
79 struct ClientLookupHandle
83 * We keep these in a DLL.
85 struct ClientLookupHandle *next;
88 * We keep these in a DLL.
90 struct ClientLookupHandle *prev;
93 * Handle to the requesting client
95 struct GNUNET_SERVER_Client *client;
98 * Active handle for the lookup.
100 struct GNS_ResolverHandle *lookup;
111 * Handle for DHT PUT activity triggered from the namestore monitor.
113 struct MonitorActivity
118 struct MonitorActivity *next;
123 struct MonitorActivity *prev;
126 * Handle for the DHT PUT operation.
128 struct GNUNET_DHT_PutHandle *ph;
133 * Our handle to the DHT
135 static struct GNUNET_DHT_Handle *dht_handle;
138 * Active DHT put operation (or NULL)
140 static struct GNUNET_DHT_PutHandle *active_put;
143 * Our handle to the namestore service
145 static struct GNUNET_NAMESTORE_Handle *namestore_handle;
148 * Our handle to the namecache service
150 static struct GNUNET_NAMECACHE_Handle *namecache_handle;
153 * Our handle to the identity service
155 static struct GNUNET_IDENTITY_Handle *identity_handle;
158 * Our handle to the identity operation to find the master zone
159 * for intercepted queries.
161 static struct GNUNET_IDENTITY_Operation *identity_op;
164 * Handle to iterate over our authoritative zone in namestore
166 static struct GNUNET_NAMESTORE_ZoneIterator *namestore_iter;
169 * Handle to monitor namestore changes to instant propagation.
171 static struct GNUNET_NAMESTORE_ZoneMonitor *zmon;
174 * Our notification context.
176 static struct GNUNET_SERVER_NotificationContext *nc;
181 static struct ClientLookupHandle *clh_head;
186 static struct ClientLookupHandle *clh_tail;
189 * Head of monitor activities; kept in a DLL.
191 static struct MonitorActivity *ma_head;
194 * Tail of monitor activities; kept in a DLL.
196 static struct MonitorActivity *ma_tail;
199 * Useful for zone update for DHT put
201 static unsigned long long num_public_records;
204 * Last seen record count
206 static unsigned long long last_num_public_records;
209 * Minimum relative expiration time of records seem during the current
212 static struct GNUNET_TIME_Relative min_relative_record_time;
215 * Zone iteration PUT interval.
217 static struct GNUNET_TIME_Relative put_interval;
220 * Default time window for zone iteration
222 static struct GNUNET_TIME_Relative zone_publish_time_window_default;
225 * Time window for zone iteration, adjusted based on relative record
226 * expiration times in our zone.
228 static struct GNUNET_TIME_Relative zone_publish_time_window;
233 static struct GNUNET_SCHEDULER_Task * zone_publish_task;
236 * #GNUNET_YES if zone has never been published before
238 static int first_zone_iteration;
241 * #GNUNET_YES if ipv6 is supported
243 static int v6_enabled;
246 * #GNUNET_YES if ipv4 is supported
248 static int v4_enabled;
251 * Handle to the statistics service
253 static struct GNUNET_STATISTICS_Handle *statistics;
257 * Task run during shutdown.
263 shutdown_task (void *cls,
264 const struct GNUNET_SCHEDULER_TaskContext *tc)
266 struct ClientLookupHandle *clh;
267 struct MonitorActivity *ma;
269 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
271 GNUNET_SERVER_notification_context_destroy (nc);
272 while (NULL != (clh = clh_head))
274 GNUNET_SERVER_client_set_user_context (clh->client, NULL);
275 GNS_resolver_lookup_cancel (clh->lookup);
276 GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
280 GNS_interceptor_done ();
281 if (NULL != identity_op)
283 GNUNET_IDENTITY_cancel (identity_op);
286 if (NULL != identity_handle)
288 GNUNET_IDENTITY_disconnect (identity_handle);
289 identity_handle = NULL;
291 GNS_resolver_done ();
293 while (NULL != (ma = ma_head))
295 GNUNET_DHT_put_cancel (ma->ph);
296 GNUNET_CONTAINER_DLL_remove (ma_head,
301 if (NULL != statistics)
303 GNUNET_STATISTICS_destroy (statistics, GNUNET_NO);
306 if (NULL != zone_publish_task)
308 GNUNET_SCHEDULER_cancel (zone_publish_task);
309 zone_publish_task = NULL;
311 if (NULL != namestore_iter)
313 GNUNET_NAMESTORE_zone_iteration_stop (namestore_iter);
314 namestore_iter = NULL;
318 GNUNET_NAMESTORE_zone_monitor_stop (zmon);
321 if (NULL != namestore_handle)
323 GNUNET_NAMESTORE_disconnect (namestore_handle);
324 namestore_handle = NULL;
326 if (NULL != namecache_handle)
328 GNUNET_NAMECACHE_disconnect (namecache_handle);
329 namecache_handle = NULL;
331 if (NULL != active_put)
333 GNUNET_DHT_put_cancel (active_put);
336 if (NULL != dht_handle)
338 GNUNET_DHT_disconnect (dht_handle);
345 * Method called periodically that triggers iteration over authoritative records
348 * @param tc task context
351 publish_zone_dht_next (void *cls,
352 const struct GNUNET_SCHEDULER_TaskContext *tc)
354 zone_publish_task = NULL;
355 GNUNET_NAMESTORE_zone_iterator_next (namestore_iter);
360 * Periodically iterate over our zone and store everything in dht
363 * @param tc task context
366 publish_zone_dht_start (void *cls,
367 const struct GNUNET_SCHEDULER_TaskContext *tc);
371 * Continuation called from DHT once the PUT operation is done.
373 * @param cls closure, NULL if called from regular iteration,
374 * `struct MonitorActivity` if called from #handle_monitor_event.
375 * @param success #GNUNET_OK on success
378 dht_put_continuation (void *cls,
381 struct MonitorActivity *ma = cls;
382 struct GNUNET_TIME_Relative next_put_interval;
384 num_public_records++;
388 if ( (num_public_records > last_num_public_records) &&
389 (GNUNET_NO == first_zone_iteration) )
391 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
392 "Last record count was lower than current record count. Reducing interval.\n");
393 put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
395 next_put_interval = GNUNET_TIME_relative_divide (put_interval,
396 LATE_ITERATION_SPEEDUP_FACTOR);
399 next_put_interval = put_interval;
401 GNUNET_STATISTICS_set (statistics,
402 "Current zone iteration interval (ms)",
403 next_put_interval.rel_value_us / 1000LL,
405 zone_publish_task = GNUNET_SCHEDULER_add_delayed (next_put_interval,
406 &publish_zone_dht_next,
411 GNUNET_CONTAINER_DLL_remove (ma_head,
420 * Convert namestore records from the internal format to that
421 * suitable for publication (removes private records, converts
422 * to absolute expiration time).
424 * @param rd input records
425 * @param rd_count size of the @a rd and @a rd_public arrays
426 * @param rd_public where to write the converted records
427 * @return number of records written to @a rd_public
430 convert_records_for_export (const struct GNUNET_GNSRECORD_Data *rd,
431 unsigned int rd_count,
432 struct GNUNET_GNSRECORD_Data *rd_public)
434 struct GNUNET_TIME_Absolute now;
435 unsigned int rd_public_count;
439 now = GNUNET_TIME_absolute_get ();
440 for (i=0;i<rd_count;i++)
441 if (0 == (rd[i].flags & GNUNET_GNSRECORD_RF_PRIVATE))
443 rd_public[rd_public_count] = rd[i];
444 if (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION))
446 /* GNUNET_GNSRECORD_block_create will convert to absolute time;
447 we just need to adjust our iteration frequency */
448 min_relative_record_time.rel_value_us =
449 GNUNET_MIN (rd_public[rd_public_count].expiration_time,
450 min_relative_record_time.rel_value_us);
452 else if (rd_public[rd_public_count].expiration_time < now.abs_value_us)
454 /* record already expired, skip it */
459 return rd_public_count;
464 * Store GNS records in the DHT.
466 * @param key key of the zone
467 * @param label label to store under
468 * @param rd_public public record data
469 * @param rd_public_count number of records in @a rd_public
470 * @param pc_arg closure argument to pass to the #dht_put_continuation
471 * @return DHT PUT handle, NULL on error
473 static struct GNUNET_DHT_PutHandle *
474 perform_dht_put (const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
476 const struct GNUNET_GNSRECORD_Data *rd_public,
477 unsigned int rd_public_count,
480 struct GNUNET_GNSRECORD_Block *block;
481 struct GNUNET_HashCode query;
482 struct GNUNET_TIME_Absolute expire;
484 struct GNUNET_DHT_PutHandle *ret;
486 expire = GNUNET_GNSRECORD_record_get_expiration_time (rd_public_count,
488 block = GNUNET_GNSRECORD_block_create (key,
494 return NULL; /* whoops */
495 block_size = ntohl (block->purpose.size)
496 + sizeof (struct GNUNET_CRYPTO_EcdsaSignature)
497 + sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
498 GNUNET_GNSRECORD_query_from_private_key (key,
501 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
502 "Storing %u record(s) for label `%s' in DHT with expiration `%s' under key %s\n",
505 GNUNET_STRINGS_absolute_time_to_string (expire),
506 GNUNET_h2s (&query));
507 ret = GNUNET_DHT_put (dht_handle, &query,
508 DHT_GNS_REPLICATION_LEVEL,
509 GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
510 GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
514 DHT_OPERATION_TIMEOUT,
515 &dht_put_continuation,
523 * Function used to put all records successively into the DHT.
525 * @param cls the closure (NULL)
526 * @param key the private key of the authority (ours)
527 * @param label the name of the records, NULL once the iteration is done
528 * @param rd_count the number of records in @a rd
529 * @param rd the record data
532 put_gns_record (void *cls,
533 const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
535 unsigned int rd_count,
536 const struct GNUNET_GNSRECORD_Data *rd)
538 struct GNUNET_GNSRECORD_Data rd_public[rd_count];
539 unsigned int rd_public_count;
543 /* we're done with one iteration, calculate when to do the next one */
544 namestore_iter = NULL;
545 last_num_public_records = num_public_records;
546 first_zone_iteration = GNUNET_NO;
547 if (0 == num_public_records)
550 * If no records are known (startup) or none present
551 * we can safely set the interval to the value for a single
554 put_interval = zone_publish_time_window;
555 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
556 "No records in namestore database.\n");
560 /* If records are present, next publication is based on the minimum
561 * relative expiration time of the records published divided by 4
563 zone_publish_time_window = GNUNET_TIME_relative_min (
564 GNUNET_TIME_relative_divide (min_relative_record_time, 4),
565 zone_publish_time_window_default);
566 put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
569 /* reset for next iteration */
570 min_relative_record_time = GNUNET_TIME_UNIT_FOREVER_REL;
571 put_interval = GNUNET_TIME_relative_max (MINIMUM_ZONE_ITERATION_INTERVAL,
574 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
575 "Zone iteration finished. Adjusted zone iteration interval to %s\n",
576 GNUNET_STRINGS_relative_time_to_string (put_interval, GNUNET_YES));
577 GNUNET_STATISTICS_set (statistics,
578 "Current zone iteration interval (in ms)",
579 put_interval.rel_value_us / 1000LL,
581 GNUNET_STATISTICS_update (statistics,
582 "Number of zone iterations",
585 GNUNET_STATISTICS_set (statistics,
586 "Number of public records in DHT",
587 last_num_public_records,
589 if (0 == num_public_records)
590 zone_publish_task = GNUNET_SCHEDULER_add_delayed (put_interval,
591 &publish_zone_dht_start,
594 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
599 rd_public_count = convert_records_for_export (rd,
603 /* We got a set of records to publish */
604 if (0 == rd_public_count)
606 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_next,
611 active_put = perform_dht_put (key,
616 if (NULL == active_put)
619 dht_put_continuation (NULL, GNUNET_NO);
625 * Periodically iterate over all zones and store everything in DHT
628 * @param tc task context
631 publish_zone_dht_start (void *cls,
632 const struct GNUNET_SCHEDULER_TaskContext *tc)
634 zone_publish_task = NULL;
636 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
637 "Starting DHT zone update!\n");
638 /* start counting again */
639 num_public_records = 0;
640 namestore_iter = GNUNET_NAMESTORE_zone_iteration_start (namestore_handle,
641 NULL, /* All zones */
642 &put_gns_record, NULL );
647 * Process a record that was stored in the namestore
648 * (invoked by the monitor).
650 * @param cls closure, NULL
651 * @param zone private key of the zone; NULL on disconnect
652 * @param label label of the records; NULL on disconnect
653 * @param rd_count number of entries in @a rd array, 0 if label was deleted
654 * @param rd array of records with data to store
657 handle_monitor_event (void *cls,
658 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
660 unsigned int rd_count,
661 const struct GNUNET_GNSRECORD_Data *rd)
663 struct GNUNET_GNSRECORD_Data rd_public[rd_count];
664 unsigned int rd_public_count;
665 struct MonitorActivity *ma;
667 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
668 "Received %u records for label `%s' via namestore monitor\n",
671 /* filter out records that are not public, and convert to
672 absolute expiration time. */
673 rd_public_count = convert_records_for_export (rd, rd_count,
675 if (0 == rd_public_count)
676 return; /* nothing to do */
677 ma = GNUNET_new (struct MonitorActivity);
678 ma->ph = perform_dht_put (zone, label,
683 /* PUT failed, do not remember operation */
687 GNUNET_CONTAINER_DLL_insert (ma_head,
693 /* END DHT ZONE PROPAGATION */
697 * Reply to client with the result from our lookup.
699 * @param cls the closure (our client lookup handle)
700 * @param rd_count the number of records in @a rd
701 * @param rd the record data
704 send_lookup_response (void* cls,
706 const struct GNUNET_GNSRECORD_Data *rd)
708 struct ClientLookupHandle *clh = cls;
709 struct GNUNET_GNS_ClientLookupResultMessage *rmsg;
712 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
713 "Sending `%s' message with %d results\n",
717 len = GNUNET_GNSRECORD_records_get_size (rd_count, rd);
718 rmsg = GNUNET_malloc (len + sizeof (struct GNUNET_GNS_ClientLookupResultMessage));
719 rmsg->header.type = htons (GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT);
720 rmsg->header.size = htons (len + sizeof(struct GNUNET_GNS_ClientLookupResultMessage));
721 rmsg->id = clh->request_id;
722 rmsg->rd_count = htonl (rd_count);
723 GNUNET_GNSRECORD_records_serialize (rd_count, rd, len,
725 GNUNET_SERVER_notification_context_unicast (nc,
730 GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
731 GNUNET_SERVER_client_set_user_context (clh->client, NULL);
733 GNUNET_STATISTICS_update (statistics,
734 "Completed lookups", 1,
736 GNUNET_STATISTICS_update (statistics,
744 * Handle lookup requests from client
746 * @param cls the closure
747 * @param client the client
748 * @param message the message
751 handle_lookup (void *cls,
752 struct GNUNET_SERVER_Client *client,
753 const struct GNUNET_MessageHeader *message)
755 char name[GNUNET_DNSPARSER_MAX_NAME_LENGTH + 1];
756 struct ClientLookupHandle *clh;
757 char *nameptr = name;
759 const struct GNUNET_CRYPTO_EcdsaPrivateKey *key;
761 const struct GNUNET_GNS_ClientLookupMessage *sh_msg;
763 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
764 "Received `%s' message\n",
766 msg_size = ntohs (message->size);
767 if (msg_size < sizeof (struct GNUNET_GNS_ClientLookupMessage))
770 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
773 sh_msg = (const struct GNUNET_GNS_ClientLookupMessage *) message;
774 GNUNET_SERVER_notification_context_add (nc, client);
775 if (GNUNET_YES == ntohs (sh_msg->have_key))
776 key = &sh_msg->shorten_key;
779 utf_in = (const char *) &sh_msg[1];
780 if ( ('\0' != utf_in[msg_size - sizeof (struct GNUNET_GNS_ClientLookupMessage) - 1]) ||
781 (strlen (utf_in) > GNUNET_DNSPARSER_MAX_NAME_LENGTH) )
784 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
787 GNUNET_STRINGS_utf8_tolower (utf_in, nameptr);
788 GNUNET_SERVER_receive_done (client, GNUNET_OK);
790 clh = GNUNET_new (struct ClientLookupHandle);
791 GNUNET_SERVER_client_set_user_context (client, clh);
792 GNUNET_CONTAINER_DLL_insert (clh_head, clh_tail, clh);
793 clh->client = client;
794 clh->request_id = sh_msg->id;
795 if ( (GNUNET_DNSPARSER_TYPE_A == ntohl (sh_msg->type)) &&
796 (GNUNET_OK != v4_enabled) )
798 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
799 "LOOKUP: Query for A record but AF_INET not supported!");
800 send_lookup_response (clh, 0, NULL);
803 if ( (GNUNET_DNSPARSER_TYPE_AAAA == ntohl (sh_msg->type)) &&
804 (GNUNET_OK != v6_enabled) )
806 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
807 "LOOKUP: Query for AAAA record but AF_INET6 not supported!");
808 send_lookup_response (clh, 0, NULL);
811 clh->lookup = GNS_resolver_lookup (&sh_msg->zone,
812 ntohl (sh_msg->type),
815 (enum GNUNET_GNS_LocalOptions) ntohs (sh_msg->options),
816 &send_lookup_response, clh);
817 GNUNET_STATISTICS_update (statistics,
824 * One of our clients disconnected, clean up after it.
827 * @param client the client that disconnected
830 notify_client_disconnect (void *cls,
831 struct GNUNET_SERVER_Client *client)
833 struct ClientLookupHandle *clh;
837 clh = GNUNET_SERVER_client_get_user_context (client, struct ClientLookupHandle);
840 GNS_resolver_lookup_cancel (clh->lookup);
841 GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
847 * The zone monitor is now in SYNC with the current state of the
848 * name store. Start to perform periodic iterations.
853 monitor_sync_event (void *cls)
855 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
861 * Method called to inform about the ego to be used for the master zone
862 * for DNS interceptions.
864 * This function is only called ONCE, and 'NULL' being passed in
865 * @a ego does indicate that interception is not configured.
866 * If @a ego is non-NULL, we should start to intercept DNS queries
867 * and resolve ".gnu" queries using the given ego as the master zone.
869 * @param cls closure, our `const struct GNUNET_CONFIGURATION_Handle *c`
870 * @param ego ego handle
871 * @param ctx context for application to store data for this ego
872 * (during the lifetime of this process, initially NULL)
873 * @param name name assigned by the user for this ego,
874 * NULL if the user just deleted the ego and it
875 * must thus no longer be used
878 identity_intercept_cb (void *cls,
879 struct GNUNET_IDENTITY_Ego *ego,
883 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
884 struct GNUNET_CRYPTO_EcdsaPublicKey dns_root;
889 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
890 _("No ego configured for `%s`\n"),
894 GNUNET_IDENTITY_ego_get_public_key (ego,
896 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
897 "DNS hijacking enabled. Connecting to DNS service.\n");
899 GNS_interceptor_init (&dns_root, cfg))
902 GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
909 * Process GNS requests.
912 * @param server the initialized server
913 * @param c configuration to use
917 struct GNUNET_SERVER_Handle *server,
918 const struct GNUNET_CONFIGURATION_Handle *c)
920 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
921 { &handle_lookup, NULL, GNUNET_MESSAGE_TYPE_GNS_LOOKUP, 0},
924 unsigned long long max_parallel_bg_queries = 0;
926 v6_enabled = GNUNET_NETWORK_test_pf (PF_INET6);
927 v4_enabled = GNUNET_NETWORK_test_pf (PF_INET);
928 min_relative_record_time = GNUNET_TIME_UNIT_FOREVER_REL;
929 namestore_handle = GNUNET_NAMESTORE_connect (c);
930 if (NULL == namestore_handle)
932 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
933 _("Failed to connect to the namestore!\n"));
934 GNUNET_SCHEDULER_shutdown ();
937 namecache_handle = GNUNET_NAMECACHE_connect (c);
938 if (NULL == namecache_handle)
940 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
941 _("Failed to connect to the namecache!\n"));
942 GNUNET_SCHEDULER_shutdown ();
946 put_interval = INITIAL_PUT_INTERVAL;
947 zone_publish_time_window_default = DEFAULT_ZONE_PUBLISH_TIME_WINDOW;
949 GNUNET_CONFIGURATION_get_value_time (c, "gns",
950 "ZONE_PUBLISH_TIME_WINDOW",
951 &zone_publish_time_window_default))
953 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
954 "Time window for zone iteration: %s\n",
955 GNUNET_STRINGS_relative_time_to_string (zone_publish_time_window,
958 zone_publish_time_window = zone_publish_time_window_default;
960 GNUNET_CONFIGURATION_get_value_number (c, "gns",
961 "MAX_PARALLEL_BACKGROUND_QUERIES",
962 &max_parallel_bg_queries))
964 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
965 "Number of allowed parallel background queries: %llu\n",
966 max_parallel_bg_queries);
969 dht_handle = GNUNET_DHT_connect (c,
970 (unsigned int) max_parallel_bg_queries);
971 if (NULL == dht_handle)
973 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
974 _("Could not connect to DHT!\n"));
975 GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
979 identity_handle = GNUNET_IDENTITY_connect (c,
982 if (NULL == identity_handle)
984 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
985 "Could not connect to identity service!\n");
989 identity_op = GNUNET_IDENTITY_get (identity_handle,
991 &identity_intercept_cb,
994 GNS_resolver_init (namecache_handle,
997 max_parallel_bg_queries);
998 GNS_shorten_init (namestore_handle,
1001 GNUNET_SERVER_disconnect_notify (server,
1002 ¬ify_client_disconnect,
1004 /* Schedule periodic put for our records. */
1005 first_zone_iteration = GNUNET_YES;
1006 GNUNET_SERVER_add_handlers (server, handlers);
1007 statistics = GNUNET_STATISTICS_create ("gns", c);
1008 nc = GNUNET_SERVER_notification_context_create (server, 1);
1009 zmon = GNUNET_NAMESTORE_zone_monitor_start (c,
1012 &handle_monitor_event,
1013 &monitor_sync_event,
1015 GNUNET_break (NULL != zmon);
1016 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1017 &shutdown_task, NULL);
1022 * The main function for the GNS service.
1024 * @param argc number of arguments from the command line
1025 * @param argv command line arguments
1026 * @return 0 ok, 1 on error
1029 main (int argc, char *const *argv)
1035 GNUNET_SERVICE_run (argc, argv, "gns", GNUNET_SERVICE_OPTION_NONE, &run,
1040 /* end of gnunet-service-gns.c */