2 This file is part of GNUnet.
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
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., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, 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)
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, NULL);
278 GNS_resolver_lookup_cancel (clh->lookup);
279 GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
283 GNS_interceptor_done ();
284 if (NULL != identity_op)
286 GNUNET_IDENTITY_cancel (identity_op);
289 if (NULL != identity_handle)
291 GNUNET_IDENTITY_disconnect (identity_handle);
292 identity_handle = NULL;
294 GNS_resolver_done ();
296 while (NULL != (ma = ma_head))
298 GNUNET_DHT_put_cancel (ma->ph);
299 GNUNET_CONTAINER_DLL_remove (ma_head,
304 if (NULL != statistics)
306 GNUNET_STATISTICS_destroy (statistics, GNUNET_NO);
309 if (NULL != zone_publish_task)
311 GNUNET_SCHEDULER_cancel (zone_publish_task);
312 zone_publish_task = NULL;
314 if (NULL != namestore_iter)
316 GNUNET_NAMESTORE_zone_iteration_stop (namestore_iter);
317 namestore_iter = NULL;
321 GNUNET_NAMESTORE_zone_monitor_stop (zmon);
324 if (NULL != namestore_handle)
326 GNUNET_NAMESTORE_disconnect (namestore_handle);
327 namestore_handle = NULL;
329 if (NULL != namecache_handle)
331 GNUNET_NAMECACHE_disconnect (namecache_handle);
332 namecache_handle = NULL;
334 if (NULL != active_put)
336 GNUNET_DHT_put_cancel (active_put);
339 if (NULL != dht_handle)
341 GNUNET_DHT_disconnect (dht_handle);
348 * Method called periodically that triggers iteration over authoritative records
353 publish_zone_dht_next (void *cls)
355 zone_publish_task = NULL;
356 GNUNET_NAMESTORE_zone_iterator_next (namestore_iter);
361 * Periodically iterate over our zone and store everything in dht
366 publish_zone_dht_start (void *cls);
370 * Continuation called from DHT once the PUT operation is done.
372 * @param cls closure, NULL if called from regular iteration,
373 * `struct MonitorActivity` if called from #handle_monitor_event.
374 * @param success #GNUNET_OK on success
377 dht_put_continuation (void *cls,
380 struct MonitorActivity *ma = cls;
381 struct GNUNET_TIME_Relative next_put_interval;
383 num_public_records++;
387 if ( (num_public_records > last_num_public_records) &&
388 (GNUNET_NO == first_zone_iteration) )
390 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
391 "Last record count was lower than current record count. Reducing interval.\n");
392 put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
394 next_put_interval = GNUNET_TIME_relative_divide (put_interval,
395 LATE_ITERATION_SPEEDUP_FACTOR);
398 next_put_interval = put_interval;
400 GNUNET_STATISTICS_set (statistics,
401 "Current zone iteration interval (ms)",
402 next_put_interval.rel_value_us / 1000LL,
404 zone_publish_task = GNUNET_SCHEDULER_add_delayed (next_put_interval,
405 &publish_zone_dht_next,
410 GNUNET_CONTAINER_DLL_remove (ma_head,
419 * Convert namestore records from the internal format to that
420 * suitable for publication (removes private records, converts
421 * to absolute expiration time).
423 * @param rd input records
424 * @param rd_count size of the @a rd and @a rd_public arrays
425 * @param rd_public where to write the converted records
426 * @return number of records written to @a rd_public
429 convert_records_for_export (const struct GNUNET_GNSRECORD_Data *rd,
430 unsigned int rd_count,
431 struct GNUNET_GNSRECORD_Data *rd_public)
433 struct GNUNET_TIME_Absolute now;
434 unsigned int rd_public_count;
438 now = GNUNET_TIME_absolute_get ();
439 for (i=0;i<rd_count;i++)
440 if (0 == (rd[i].flags & GNUNET_GNSRECORD_RF_PRIVATE))
442 rd_public[rd_public_count] = rd[i];
443 if (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION))
445 /* GNUNET_GNSRECORD_block_create will convert to absolute time;
446 we just need to adjust our iteration frequency */
447 min_relative_record_time.rel_value_us =
448 GNUNET_MIN (rd_public[rd_public_count].expiration_time,
449 min_relative_record_time.rel_value_us);
451 else if (rd_public[rd_public_count].expiration_time < now.abs_value_us)
453 /* record already expired, skip it */
458 return rd_public_count;
463 * Store GNS records in the DHT.
465 * @param key key of the zone
466 * @param label label to store under
467 * @param rd_public public record data
468 * @param rd_public_count number of records in @a rd_public
469 * @param pc_arg closure argument to pass to the #dht_put_continuation
470 * @return DHT PUT handle, NULL on error
472 static struct GNUNET_DHT_PutHandle *
473 perform_dht_put (const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
475 const struct GNUNET_GNSRECORD_Data *rd_public,
476 unsigned int rd_public_count,
479 struct GNUNET_GNSRECORD_Block *block;
480 struct GNUNET_HashCode query;
481 struct GNUNET_TIME_Absolute expire;
483 struct GNUNET_DHT_PutHandle *ret;
485 expire = GNUNET_GNSRECORD_record_get_expiration_time (rd_public_count,
487 block = GNUNET_GNSRECORD_block_create (key,
493 return NULL; /* whoops */
494 block_size = ntohl (block->purpose.size)
495 + sizeof (struct GNUNET_CRYPTO_EcdsaSignature)
496 + sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
497 GNUNET_GNSRECORD_query_from_private_key (key,
500 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
501 "Storing %u record(s) for label `%s' in DHT with expiration `%s' under key %s\n",
504 GNUNET_STRINGS_absolute_time_to_string (expire),
505 GNUNET_h2s (&query));
506 ret = GNUNET_DHT_put (dht_handle, &query,
507 DHT_GNS_REPLICATION_LEVEL,
508 GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
509 GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
513 DHT_OPERATION_TIMEOUT,
514 &dht_put_continuation,
522 * Function used to put all records successively into the DHT.
524 * @param cls the closure (NULL)
525 * @param key the private key of the authority (ours)
526 * @param label the name of the records, NULL once the iteration is done
527 * @param rd_count the number of records in @a rd
528 * @param rd the record data
531 put_gns_record (void *cls,
532 const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
534 unsigned int rd_count,
535 const struct GNUNET_GNSRECORD_Data *rd)
537 struct GNUNET_GNSRECORD_Data rd_public[rd_count];
538 unsigned int rd_public_count;
542 /* we're done with one iteration, calculate when to do the next one */
543 namestore_iter = NULL;
544 last_num_public_records = num_public_records;
545 first_zone_iteration = GNUNET_NO;
546 if (0 == num_public_records)
549 * If no records are known (startup) or none present
550 * we can safely set the interval to the value for a single
553 put_interval = zone_publish_time_window;
554 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
555 "No records in namestore database.\n");
559 /* If records are present, next publication is based on the minimum
560 * relative expiration time of the records published divided by 4
562 zone_publish_time_window = GNUNET_TIME_relative_min (
563 GNUNET_TIME_relative_divide (min_relative_record_time, 4),
564 zone_publish_time_window_default);
565 put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
568 /* reset for next iteration */
569 min_relative_record_time = GNUNET_TIME_UNIT_FOREVER_REL;
570 put_interval = GNUNET_TIME_relative_max (MINIMUM_ZONE_ITERATION_INTERVAL,
573 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
574 "Zone iteration finished. Adjusted zone iteration interval to %s\n",
575 GNUNET_STRINGS_relative_time_to_string (put_interval, GNUNET_YES));
576 GNUNET_STATISTICS_set (statistics,
577 "Current zone iteration interval (in ms)",
578 put_interval.rel_value_us / 1000LL,
580 GNUNET_STATISTICS_update (statistics,
581 "Number of zone iterations",
584 GNUNET_STATISTICS_set (statistics,
585 "Number of public records in DHT",
586 last_num_public_records,
588 if (0 == num_public_records)
589 zone_publish_task = GNUNET_SCHEDULER_add_delayed (put_interval,
590 &publish_zone_dht_start,
593 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
598 rd_public_count = convert_records_for_export (rd,
602 /* We got a set of records to publish */
603 if (0 == rd_public_count)
605 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_next,
610 active_put = perform_dht_put (key,
615 if (NULL == active_put)
618 dht_put_continuation (NULL, GNUNET_NO);
624 * Periodically iterate over all zones and store everything in DHT
629 publish_zone_dht_start (void *cls)
631 zone_publish_task = NULL;
633 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
634 "Starting DHT zone update!\n");
635 /* start counting again */
636 num_public_records = 0;
637 namestore_iter = GNUNET_NAMESTORE_zone_iteration_start (namestore_handle,
638 NULL, /* All zones */
639 &put_gns_record, NULL );
644 * Process a record that was stored in the namestore
645 * (invoked by the monitor).
647 * @param cls closure, NULL
648 * @param zone private key of the zone; NULL on disconnect
649 * @param label label of the records; NULL on disconnect
650 * @param rd_count number of entries in @a rd array, 0 if label was deleted
651 * @param rd array of records with data to store
654 handle_monitor_event (void *cls,
655 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
657 unsigned int rd_count,
658 const struct GNUNET_GNSRECORD_Data *rd)
660 struct GNUNET_GNSRECORD_Data rd_public[rd_count];
661 unsigned int rd_public_count;
662 struct MonitorActivity *ma;
664 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
665 "Received %u records for label `%s' via namestore monitor\n",
668 /* filter out records that are not public, and convert to
669 absolute expiration time. */
670 rd_public_count = convert_records_for_export (rd, rd_count,
672 if (0 == rd_public_count)
673 return; /* nothing to do */
674 ma = GNUNET_new (struct MonitorActivity);
675 ma->ph = perform_dht_put (zone, label,
680 /* PUT failed, do not remember operation */
684 GNUNET_CONTAINER_DLL_insert (ma_head,
690 /* END DHT ZONE PROPAGATION */
694 * Reply to client with the result from our lookup.
696 * @param cls the closure (our client lookup handle)
697 * @param rd_count the number of records in @a rd
698 * @param rd the record data
701 send_lookup_response (void* cls,
703 const struct GNUNET_GNSRECORD_Data *rd)
705 struct ClientLookupHandle *clh = cls;
706 struct GNUNET_GNS_ClientLookupResultMessage *rmsg;
709 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
710 "Sending `%s' message with %d results\n",
714 len = GNUNET_GNSRECORD_records_get_size (rd_count, rd);
715 rmsg = GNUNET_malloc (len + sizeof (struct GNUNET_GNS_ClientLookupResultMessage));
716 rmsg->header.type = htons (GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT);
717 rmsg->header.size = htons (len + sizeof(struct GNUNET_GNS_ClientLookupResultMessage));
718 rmsg->id = clh->request_id;
719 rmsg->rd_count = htonl (rd_count);
720 GNUNET_GNSRECORD_records_serialize (rd_count, rd, len,
722 GNUNET_SERVER_notification_context_unicast (nc,
727 GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
728 GNUNET_SERVER_client_set_user_context (clh->client, NULL);
730 GNUNET_STATISTICS_update (statistics,
731 "Completed lookups", 1,
733 GNUNET_STATISTICS_update (statistics,
741 * Handle lookup requests from client
743 * @param cls the closure
744 * @param client the client
745 * @param message the message
748 handle_lookup (void *cls,
749 struct GNUNET_SERVER_Client *client,
750 const struct GNUNET_MessageHeader *message)
752 char name[GNUNET_DNSPARSER_MAX_NAME_LENGTH + 1];
753 struct ClientLookupHandle *clh;
754 char *nameptr = name;
756 const struct GNUNET_CRYPTO_EcdsaPrivateKey *key;
758 const struct GNUNET_GNS_ClientLookupMessage *sh_msg;
760 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
761 "Received `%s' message\n",
763 msg_size = ntohs (message->size);
764 if (msg_size < sizeof (struct GNUNET_GNS_ClientLookupMessage))
767 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
770 sh_msg = (const struct GNUNET_GNS_ClientLookupMessage *) message;
771 GNUNET_SERVER_notification_context_add (nc, client);
772 if (GNUNET_YES == ntohs (sh_msg->have_key))
773 key = &sh_msg->shorten_key;
776 utf_in = (const char *) &sh_msg[1];
777 if ( ('\0' != utf_in[msg_size - sizeof (struct GNUNET_GNS_ClientLookupMessage) - 1]) ||
778 (strlen (utf_in) > GNUNET_DNSPARSER_MAX_NAME_LENGTH) )
781 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
784 GNUNET_STRINGS_utf8_tolower (utf_in, nameptr);
785 GNUNET_SERVER_receive_done (client, GNUNET_OK);
787 clh = GNUNET_new (struct ClientLookupHandle);
788 GNUNET_SERVER_client_set_user_context (client, clh);
789 GNUNET_CONTAINER_DLL_insert (clh_head, clh_tail, clh);
790 clh->client = client;
791 clh->request_id = sh_msg->id;
792 if ( (GNUNET_DNSPARSER_TYPE_A == ntohl (sh_msg->type)) &&
793 (GNUNET_OK != v4_enabled) )
795 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
796 "LOOKUP: Query for A record but AF_INET not supported!");
797 send_lookup_response (clh, 0, NULL);
800 if ( (GNUNET_DNSPARSER_TYPE_AAAA == ntohl (sh_msg->type)) &&
801 (GNUNET_OK != v6_enabled) )
803 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
804 "LOOKUP: Query for AAAA record but AF_INET6 not supported!");
805 send_lookup_response (clh, 0, NULL);
808 clh->lookup = GNS_resolver_lookup (&sh_msg->zone,
809 ntohl (sh_msg->type),
812 (enum GNUNET_GNS_LocalOptions) ntohs (sh_msg->options),
813 &send_lookup_response, clh);
814 GNUNET_STATISTICS_update (statistics,
821 * One of our clients disconnected, clean up after it.
824 * @param client the client that disconnected
827 notify_client_disconnect (void *cls,
828 struct GNUNET_SERVER_Client *client)
830 struct ClientLookupHandle *clh;
834 clh = GNUNET_SERVER_client_get_user_context (client, struct ClientLookupHandle);
837 GNS_resolver_lookup_cancel (clh->lookup);
838 GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
844 * The zone monitor is now in SYNC with the current state of the
845 * name store. Start to perform periodic iterations.
850 monitor_sync_event (void *cls)
852 zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
858 * Method called to inform about the ego to be used for the master zone
859 * for DNS interceptions.
861 * This function is only called ONCE, and 'NULL' being passed in
862 * @a ego does indicate that interception is not configured.
863 * If @a ego is non-NULL, we should start to intercept DNS queries
864 * and resolve ".gnu" queries using the given ego as the master zone.
866 * @param cls closure, our `const struct GNUNET_CONFIGURATION_Handle *c`
867 * @param ego ego handle
868 * @param ctx context for application to store data for this ego
869 * (during the lifetime of this process, initially NULL)
870 * @param name name assigned by the user for this ego,
871 * NULL if the user just deleted the ego and it
872 * must thus no longer be used
875 identity_intercept_cb (void *cls,
876 struct GNUNET_IDENTITY_Ego *ego,
880 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
881 struct GNUNET_CRYPTO_EcdsaPublicKey dns_root;
886 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
887 _("No ego configured for `%s`\n"),
891 GNUNET_IDENTITY_ego_get_public_key (ego,
894 GNS_interceptor_init (&dns_root, cfg))
897 GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
904 * Process GNS requests.
907 * @param server the initialized server
908 * @param c configuration to use
912 struct GNUNET_SERVER_Handle *server,
913 const struct GNUNET_CONFIGURATION_Handle *c)
915 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
916 { &handle_lookup, NULL, GNUNET_MESSAGE_TYPE_GNS_LOOKUP, 0},
919 unsigned long long max_parallel_bg_queries = 0;
921 v6_enabled = GNUNET_NETWORK_test_pf (PF_INET6);
922 v4_enabled = GNUNET_NETWORK_test_pf (PF_INET);
923 min_relative_record_time = GNUNET_TIME_UNIT_FOREVER_REL;
924 namestore_handle = GNUNET_NAMESTORE_connect (c);
925 if (NULL == namestore_handle)
927 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
928 _("Failed to connect to the namestore!\n"));
929 GNUNET_SCHEDULER_shutdown ();
932 namecache_handle = GNUNET_NAMECACHE_connect (c);
933 if (NULL == namecache_handle)
935 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
936 _("Failed to connect to the namecache!\n"));
937 GNUNET_SCHEDULER_shutdown ();
941 put_interval = INITIAL_PUT_INTERVAL;
942 zone_publish_time_window_default = DEFAULT_ZONE_PUBLISH_TIME_WINDOW;
944 GNUNET_CONFIGURATION_get_value_time (c, "gns",
945 "ZONE_PUBLISH_TIME_WINDOW",
946 &zone_publish_time_window_default))
948 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
949 "Time window for zone iteration: %s\n",
950 GNUNET_STRINGS_relative_time_to_string (zone_publish_time_window,
953 zone_publish_time_window = zone_publish_time_window_default;
955 GNUNET_CONFIGURATION_get_value_number (c, "gns",
956 "MAX_PARALLEL_BACKGROUND_QUERIES",
957 &max_parallel_bg_queries))
959 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
960 "Number of allowed parallel background queries: %llu\n",
961 max_parallel_bg_queries);
964 dht_handle = GNUNET_DHT_connect (c,
965 (unsigned int) max_parallel_bg_queries);
966 if (NULL == dht_handle)
968 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
969 _("Could not connect to DHT!\n"));
970 GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
974 identity_handle = GNUNET_IDENTITY_connect (c,
977 if (NULL == identity_handle)
979 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
980 "Could not connect to identity service!\n");
984 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
985 "Looking for gns-intercept ego\n");
986 identity_op = GNUNET_IDENTITY_get (identity_handle,
988 &identity_intercept_cb,
991 GNS_resolver_init (namecache_handle,
994 max_parallel_bg_queries);
995 GNS_shorten_init (namestore_handle,
998 GNUNET_SERVER_disconnect_notify (server,
999 ¬ify_client_disconnect,
1001 /* Schedule periodic put for our records. */
1002 first_zone_iteration = GNUNET_YES;
1003 GNUNET_SERVER_add_handlers (server, handlers);
1004 statistics = GNUNET_STATISTICS_create ("gns", c);
1005 nc = GNUNET_SERVER_notification_context_create (server, 1);
1006 zmon = GNUNET_NAMESTORE_zone_monitor_start (c,
1009 &handle_monitor_event,
1010 &monitor_sync_event,
1012 GNUNET_break (NULL != zmon);
1013 GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
1018 * The main function for the GNS service.
1020 * @param argc number of arguments from the command line
1021 * @param argv command line arguments
1022 * @return 0 ok, 1 on error
1025 main (int argc, char *const *argv)
1031 GNUNET_SERVICE_run (argc, argv, "gns", GNUNET_SERVICE_OPTION_NONE, &run,
1036 /* end of gnunet-service-gns.c */