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3 Copyright (C) 2011-2013 GNUnet e.V.
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
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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.
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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)
265 struct ClientLookupHandle *clh;
266 struct MonitorActivity *ma;
268 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
272 GNUNET_SERVER_notification_context_destroy (nc);
275 while (NULL != (clh = clh_head))
277 GNUNET_SERVER_client_set_user_context (clh->client,
279 GNS_resolver_lookup_cancel (clh->lookup);
280 GNUNET_CONTAINER_DLL_remove (clh_head,
286 GNS_interceptor_done ();
287 if (NULL != identity_op)
289 GNUNET_IDENTITY_cancel (identity_op);
292 if (NULL != identity_handle)
294 GNUNET_IDENTITY_disconnect (identity_handle);
295 identity_handle = NULL;
297 GNS_resolver_done ();
299 while (NULL != (ma = ma_head))
301 GNUNET_DHT_put_cancel (ma->ph);
302 GNUNET_CONTAINER_DLL_remove (ma_head,
307 if (NULL != statistics)
309 GNUNET_STATISTICS_destroy (statistics,
313 if (NULL != zone_publish_task)
315 GNUNET_SCHEDULER_cancel (zone_publish_task);
316 zone_publish_task = NULL;
318 if (NULL != namestore_iter)
320 GNUNET_NAMESTORE_zone_iteration_stop (namestore_iter);
321 namestore_iter = NULL;
325 GNUNET_NAMESTORE_zone_monitor_stop (zmon);
328 if (NULL != namestore_handle)
330 GNUNET_NAMESTORE_disconnect (namestore_handle);
331 namestore_handle = NULL;
333 if (NULL != namecache_handle)
335 GNUNET_NAMECACHE_disconnect (namecache_handle);
336 namecache_handle = NULL;
338 if (NULL != active_put)
340 GNUNET_DHT_put_cancel (active_put);
343 if (NULL != dht_handle)
345 GNUNET_DHT_disconnect (dht_handle);
352 * Method called periodically that triggers iteration over authoritative records
357 publish_zone_dht_next (void *cls)
359 zone_publish_task = NULL;
360 GNUNET_assert (NULL != namestore_iter);
361 GNUNET_NAMESTORE_zone_iterator_next (namestore_iter);
366 * Periodically iterate over our zone and store everything in dht
371 publish_zone_dht_start (void *cls);
375 * Continuation called from DHT once the PUT operation is done.
377 * @param cls closure, NULL if called from regular iteration,
378 * `struct MonitorActivity` if called from #handle_monitor_event.
379 * @param success #GNUNET_OK on success
382 dht_put_continuation (void *cls,
385 struct MonitorActivity *ma = cls;
386 struct GNUNET_TIME_Relative next_put_interval;
388 num_public_records++;
392 if ( (num_public_records > last_num_public_records) &&
393 (GNUNET_NO == first_zone_iteration) )
395 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
396 "Last record count was lower than current record count. Reducing interval.\n");
397 put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
399 next_put_interval = GNUNET_TIME_relative_divide (put_interval,
400 LATE_ITERATION_SPEEDUP_FACTOR);
403 next_put_interval = put_interval;
405 GNUNET_STATISTICS_set (statistics,
406 "Current zone iteration interval (ms)",
407 next_put_interval.rel_value_us / 1000LL,
409 GNUNET_assert (NULL == zone_publish_task);
410 zone_publish_task = GNUNET_SCHEDULER_add_delayed (next_put_interval,
411 &publish_zone_dht_next,
416 GNUNET_CONTAINER_DLL_remove (ma_head,
425 * Convert namestore records from the internal format to that
426 * suitable for publication (removes private records, converts
427 * to absolute expiration time).
429 * @param rd input records
430 * @param rd_count size of the @a rd and @a rd_public arrays
431 * @param rd_public where to write the converted records
432 * @return number of records written to @a rd_public
435 convert_records_for_export (const struct GNUNET_GNSRECORD_Data *rd,
436 unsigned int rd_count,
437 struct GNUNET_GNSRECORD_Data *rd_public)
439 struct GNUNET_TIME_Absolute now;
440 unsigned int rd_public_count;
444 now = GNUNET_TIME_absolute_get ();
445 for (i=0;i<rd_count;i++)
446 if (0 == (rd[i].flags & GNUNET_GNSRECORD_RF_PRIVATE))
448 rd_public[rd_public_count] = rd[i];
449 if (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION))
451 /* GNUNET_GNSRECORD_block_create will convert to absolute time;
452 we just need to adjust our iteration frequency */
453 min_relative_record_time.rel_value_us =
454 GNUNET_MIN (rd_public[rd_public_count].expiration_time,
455 min_relative_record_time.rel_value_us);
457 else if (rd_public[rd_public_count].expiration_time < now.abs_value_us)
459 /* record already expired, skip it */
464 return rd_public_count;
469 * Store GNS records in the DHT.
471 * @param key key of the zone
472 * @param label label to store under
473 * @param rd_public public record data
474 * @param rd_public_count number of records in @a rd_public
475 * @param pc_arg closure argument to pass to the #dht_put_continuation
476 * @return DHT PUT handle, NULL on error
478 static struct GNUNET_DHT_PutHandle *
479 perform_dht_put (const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
481 const struct GNUNET_GNSRECORD_Data *rd_public,
482 unsigned int rd_public_count,
485 struct GNUNET_GNSRECORD_Block *block;
486 struct GNUNET_HashCode query;
487 struct GNUNET_TIME_Absolute expire;
489 struct GNUNET_DHT_PutHandle *ret;
491 expire = GNUNET_GNSRECORD_record_get_expiration_time (rd_public_count,
493 block = GNUNET_GNSRECORD_block_create (key,
499 return NULL; /* whoops */
500 block_size = ntohl (block->purpose.size)
501 + sizeof (struct GNUNET_CRYPTO_EcdsaSignature)
502 + sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
503 GNUNET_GNSRECORD_query_from_private_key (key,
506 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
507 "Storing %u record(s) for label `%s' in DHT with expiration `%s' under key %s\n",
510 GNUNET_STRINGS_absolute_time_to_string (expire),
511 GNUNET_h2s (&query));
512 ret = GNUNET_DHT_put (dht_handle, &query,
513 DHT_GNS_REPLICATION_LEVEL,
514 GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
515 GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
519 &dht_put_continuation,
527 * Function used to put all records successively into the DHT.
529 * @param cls the closure (NULL)
530 * @param key the private key of the authority (ours)
531 * @param label the name of the records, NULL once the iteration is done
532 * @param rd_count the number of records in @a rd
533 * @param rd the record data
536 put_gns_record (void *cls,
537 const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
539 unsigned int rd_count,
540 const struct GNUNET_GNSRECORD_Data *rd)
542 struct GNUNET_GNSRECORD_Data rd_public[rd_count];
543 unsigned int rd_public_count;
545 if ( (NULL == key) &&
549 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
550 "Got disconnected from namestore database, retrying.\n");
551 namestore_iter = NULL;
552 if (NULL != zone_publish_task)
554 GNUNET_SCHEDULER_cancel (zone_publish_task);
555 zone_publish_task = NULL;
557 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
563 /* we're done with one iteration, calculate when to do the next one */
564 namestore_iter = NULL;
565 last_num_public_records = num_public_records;
566 first_zone_iteration = GNUNET_NO;
567 if (0 == num_public_records)
570 * If no records are known (startup) or none present
571 * we can safely set the interval to the value for a single
574 put_interval = zone_publish_time_window;
575 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
576 "No records in namestore database.\n");
580 /* If records are present, next publication is based on the minimum
581 * relative expiration time of the records published divided by 4
583 zone_publish_time_window = GNUNET_TIME_relative_min (
584 GNUNET_TIME_relative_divide (min_relative_record_time, 4),
585 zone_publish_time_window_default);
586 put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
589 /* reset for next iteration */
590 min_relative_record_time = GNUNET_TIME_UNIT_FOREVER_REL;
591 put_interval = GNUNET_TIME_relative_max (MINIMUM_ZONE_ITERATION_INTERVAL,
594 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
595 "Zone iteration finished. Adjusted zone iteration interval to %s\n",
596 GNUNET_STRINGS_relative_time_to_string (put_interval,
598 GNUNET_STATISTICS_set (statistics,
599 "Current zone iteration interval (in ms)",
600 put_interval.rel_value_us / 1000LL,
602 GNUNET_STATISTICS_update (statistics,
603 "Number of zone iterations",
606 GNUNET_STATISTICS_set (statistics,
607 "Number of public records in DHT",
608 last_num_public_records,
610 GNUNET_assert (NULL == zone_publish_task);
611 if (0 == num_public_records)
612 zone_publish_task = GNUNET_SCHEDULER_add_delayed (put_interval,
613 &publish_zone_dht_start,
616 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
621 rd_public_count = convert_records_for_export (rd,
625 /* We got a set of records to publish */
626 if (0 == rd_public_count)
628 GNUNET_assert (NULL == zone_publish_task);
629 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_next,
634 active_put = perform_dht_put (key,
639 if (NULL == active_put)
642 dht_put_continuation (NULL, GNUNET_NO);
648 * Periodically iterate over all zones and store everything in DHT
653 publish_zone_dht_start (void *cls)
655 zone_publish_task = NULL;
657 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
658 "Starting DHT zone update!\n");
659 /* start counting again */
660 num_public_records = 0;
661 GNUNET_assert (NULL == namestore_iter);
663 = GNUNET_NAMESTORE_zone_iteration_start (namestore_handle,
664 NULL, /* All zones */
671 * Process a record that was stored in the namestore
672 * (invoked by the monitor).
674 * @param cls closure, NULL
675 * @param zone private key of the zone; NULL on disconnect
676 * @param label label of the records; NULL on disconnect
677 * @param rd_count number of entries in @a rd array, 0 if label was deleted
678 * @param rd array of records with data to store
681 handle_monitor_event (void *cls,
682 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
684 unsigned int rd_count,
685 const struct GNUNET_GNSRECORD_Data *rd)
687 struct GNUNET_GNSRECORD_Data rd_public[rd_count];
688 unsigned int rd_public_count;
689 struct MonitorActivity *ma;
691 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
692 "Received %u records for label `%s' via namestore monitor\n",
695 /* filter out records that are not public, and convert to
696 absolute expiration time. */
697 rd_public_count = convert_records_for_export (rd, rd_count,
699 if (0 == rd_public_count)
700 return; /* nothing to do */
701 ma = GNUNET_new (struct MonitorActivity);
702 ma->ph = perform_dht_put (zone, label,
707 /* PUT failed, do not remember operation */
711 GNUNET_CONTAINER_DLL_insert (ma_head,
717 /* END DHT ZONE PROPAGATION */
721 * Reply to client with the result from our lookup.
723 * @param cls the closure (our client lookup handle)
724 * @param rd_count the number of records in @a rd
725 * @param rd the record data
728 send_lookup_response (void* cls,
730 const struct GNUNET_GNSRECORD_Data *rd)
732 struct ClientLookupHandle *clh = cls;
733 struct GNUNET_GNS_ClientLookupResultMessage *rmsg;
736 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
737 "Sending LOOKUP_RESULT message with %u results\n",
738 (unsigned int) rd_count);
740 len = GNUNET_GNSRECORD_records_get_size (rd_count, rd);
741 rmsg = GNUNET_malloc (len + sizeof (struct GNUNET_GNS_ClientLookupResultMessage));
742 rmsg->header.type = htons (GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT);
743 rmsg->header.size = htons (len + sizeof(struct GNUNET_GNS_ClientLookupResultMessage));
744 rmsg->id = clh->request_id;
745 rmsg->rd_count = htonl (rd_count);
746 GNUNET_GNSRECORD_records_serialize (rd_count, rd, len,
748 GNUNET_SERVER_notification_context_unicast (nc,
753 GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
754 GNUNET_SERVER_client_set_user_context (clh->client, NULL);
756 GNUNET_STATISTICS_update (statistics,
757 "Completed lookups", 1,
759 GNUNET_STATISTICS_update (statistics,
767 * Handle lookup requests from client
769 * @param cls the closure
770 * @param client the client
771 * @param message the message
774 handle_lookup (void *cls,
775 struct GNUNET_SERVER_Client *client,
776 const struct GNUNET_MessageHeader *message)
778 char name[GNUNET_DNSPARSER_MAX_NAME_LENGTH + 1];
779 struct ClientLookupHandle *clh;
780 char *nameptr = name;
782 const struct GNUNET_CRYPTO_EcdsaPrivateKey *key;
784 const struct GNUNET_GNS_ClientLookupMessage *sh_msg;
786 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
787 "Received LOOKUP message\n");
788 msg_size = ntohs (message->size);
789 if (msg_size < sizeof (struct GNUNET_GNS_ClientLookupMessage))
792 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
795 sh_msg = (const struct GNUNET_GNS_ClientLookupMessage *) message;
796 GNUNET_SERVER_notification_context_add (nc, client);
797 if (GNUNET_YES == ntohs (sh_msg->have_key))
798 key = &sh_msg->shorten_key;
801 utf_in = (const char *) &sh_msg[1];
802 if ( ('\0' != utf_in[msg_size - sizeof (struct GNUNET_GNS_ClientLookupMessage) - 1]) ||
803 (strlen (utf_in) > GNUNET_DNSPARSER_MAX_NAME_LENGTH) )
806 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
809 GNUNET_STRINGS_utf8_tolower (utf_in, nameptr);
810 GNUNET_SERVER_receive_done (client, GNUNET_OK);
812 clh = GNUNET_new (struct ClientLookupHandle);
813 GNUNET_SERVER_client_set_user_context (client, clh);
814 GNUNET_CONTAINER_DLL_insert (clh_head, clh_tail, clh);
815 clh->client = client;
816 clh->request_id = sh_msg->id;
817 if ( (GNUNET_DNSPARSER_TYPE_A == ntohl (sh_msg->type)) &&
818 (GNUNET_OK != v4_enabled) )
820 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
821 "LOOKUP: Query for A record but AF_INET not supported!");
822 send_lookup_response (clh, 0, NULL);
825 if ( (GNUNET_DNSPARSER_TYPE_AAAA == ntohl (sh_msg->type)) &&
826 (GNUNET_OK != v6_enabled) )
828 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
829 "LOOKUP: Query for AAAA record but AF_INET6 not supported!");
830 send_lookup_response (clh, 0, NULL);
833 clh->lookup = GNS_resolver_lookup (&sh_msg->zone,
834 ntohl (sh_msg->type),
837 (enum GNUNET_GNS_LocalOptions) ntohs (sh_msg->options),
838 &send_lookup_response, clh);
839 GNUNET_STATISTICS_update (statistics,
846 * One of our clients disconnected, clean up after it.
849 * @param client the client that disconnected
852 notify_client_disconnect (void *cls,
853 struct GNUNET_SERVER_Client *client)
855 struct ClientLookupHandle *clh;
859 clh = GNUNET_SERVER_client_get_user_context (client, struct ClientLookupHandle);
862 GNS_resolver_lookup_cancel (clh->lookup);
863 GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
869 * The zone monitor is now in SYNC with the current state of the
870 * name store. Start to perform periodic iterations.
875 monitor_sync_event (void *cls)
877 GNUNET_assert (NULL == zone_publish_task);
878 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
884 * Method called to inform about the ego to be used for the master zone
885 * for DNS interceptions.
887 * This function is only called ONCE, and 'NULL' being passed in
888 * @a ego does indicate that interception is not configured.
889 * If @a ego is non-NULL, we should start to intercept DNS queries
890 * and resolve ".gnu" queries using the given ego as the master zone.
892 * @param cls closure, our `const struct GNUNET_CONFIGURATION_Handle *c`
893 * @param ego ego handle
894 * @param ctx context for application to store data for this ego
895 * (during the lifetime of this process, initially NULL)
896 * @param name name assigned by the user for this ego,
897 * NULL if the user just deleted the ego and it
898 * must thus no longer be used
901 identity_intercept_cb (void *cls,
902 struct GNUNET_IDENTITY_Ego *ego,
906 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
907 struct GNUNET_CRYPTO_EcdsaPublicKey dns_root;
912 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
913 _("No ego configured for `%s`\n"),
917 GNUNET_IDENTITY_ego_get_public_key (ego,
920 GNS_interceptor_init (&dns_root, cfg))
923 GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
930 * Process GNS requests.
933 * @param server the initialized server
934 * @param c configuration to use
938 struct GNUNET_SERVER_Handle *server,
939 const struct GNUNET_CONFIGURATION_Handle *c)
941 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
942 { &handle_lookup, NULL, GNUNET_MESSAGE_TYPE_GNS_LOOKUP, 0},
945 unsigned long long max_parallel_bg_queries = 0;
947 v6_enabled = GNUNET_NETWORK_test_pf (PF_INET6);
948 v4_enabled = GNUNET_NETWORK_test_pf (PF_INET);
949 min_relative_record_time = GNUNET_TIME_UNIT_FOREVER_REL;
950 namestore_handle = GNUNET_NAMESTORE_connect (c);
951 if (NULL == namestore_handle)
953 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
954 _("Failed to connect to the namestore!\n"));
955 GNUNET_SCHEDULER_shutdown ();
958 namecache_handle = GNUNET_NAMECACHE_connect (c);
959 if (NULL == namecache_handle)
961 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
962 _("Failed to connect to the namecache!\n"));
963 GNUNET_SCHEDULER_shutdown ();
967 put_interval = INITIAL_PUT_INTERVAL;
968 zone_publish_time_window_default = DEFAULT_ZONE_PUBLISH_TIME_WINDOW;
970 GNUNET_CONFIGURATION_get_value_time (c, "gns",
971 "ZONE_PUBLISH_TIME_WINDOW",
972 &zone_publish_time_window_default))
974 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
975 "Time window for zone iteration: %s\n",
976 GNUNET_STRINGS_relative_time_to_string (zone_publish_time_window,
979 zone_publish_time_window = zone_publish_time_window_default;
981 GNUNET_CONFIGURATION_get_value_number (c, "gns",
982 "MAX_PARALLEL_BACKGROUND_QUERIES",
983 &max_parallel_bg_queries))
985 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
986 "Number of allowed parallel background queries: %llu\n",
987 max_parallel_bg_queries);
990 dht_handle = GNUNET_DHT_connect (c,
991 (unsigned int) max_parallel_bg_queries);
992 if (NULL == dht_handle)
994 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
995 _("Could not connect to DHT!\n"));
996 GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
1000 identity_handle = GNUNET_IDENTITY_connect (c,
1003 if (NULL == identity_handle)
1005 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1006 "Could not connect to identity service!\n");
1010 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1011 "Looking for gns-intercept ego\n");
1012 identity_op = GNUNET_IDENTITY_get (identity_handle,
1014 &identity_intercept_cb,
1017 GNS_resolver_init (namecache_handle,
1020 max_parallel_bg_queries);
1021 GNS_shorten_init (namestore_handle,
1024 GNUNET_SERVER_disconnect_notify (server,
1025 ¬ify_client_disconnect,
1027 /* Schedule periodic put for our records. */
1028 first_zone_iteration = GNUNET_YES;
1029 GNUNET_SERVER_add_handlers (server, handlers);
1030 statistics = GNUNET_STATISTICS_create ("gns", c);
1031 nc = GNUNET_SERVER_notification_context_create (server, 1);
1032 zmon = GNUNET_NAMESTORE_zone_monitor_start (c,
1035 &handle_monitor_event,
1036 &monitor_sync_event,
1038 GNUNET_break (NULL != zmon);
1039 GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
1044 * The main function for the GNS service.
1046 * @param argc number of arguments from the command line
1047 * @param argv command line arguments
1048 * @return 0 ok, 1 on error
1051 main (int argc, char *const *argv)
1057 GNUNET_SERVICE_run (argc, argv, "gns", GNUNET_SERVICE_OPTION_NONE, &run,
1062 /* end of gnunet-service-gns.c */