2 This file is part of GNUnet.
3 (C) 2009, 2010, 2011 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.
23 * @file gns/gnunet-service-gns.c
24 * @brief GNUnet GNS service
25 * @author Martin Schanzenbach
28 #include "gnunet_util_lib.h"
29 #include "gnunet_transport_service.h"
30 #include "gnunet_dns_service.h"
31 #include "gnunet_dnsparser_lib.h"
32 #include "gnunet_dht_service.h"
33 #include "gnunet_namestore_service.h"
34 #include "gnunet_gns_service.h"
35 #include "block_gns.h"
37 #include "gnunet-service-gns_resolver.h"
38 #include "gnunet-service-gns_interceptor.h"
40 /* FIXME move to proper header in include */
41 #define GNUNET_MESSAGE_TYPE_GNS_LOOKUP 23
42 #define GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT 24
43 #define GNUNET_MESSAGE_TYPE_GNS_SHORTEN 25
44 #define GNUNET_MESSAGE_TYPE_GNS_SHORTEN_RESULT 26
45 #define GNUNET_MESSAGE_TYPE_GNS_GET_AUTH 27
46 #define GNUNET_MESSAGE_TYPE_GNS_GET_AUTH_RESULT 28
50 * Handle to a shorten operation from api
52 struct ClientShortenHandle
54 /* the requesting client that */
55 struct GNUNET_SERVER_Client *client;
61 enum GNUNET_GNS_RecordType type;
70 * Handle to a get auhtority operation from api
72 struct ClientGetAuthHandle
74 /* the requesting client that */
75 struct GNUNET_SERVER_Client *client;
80 /* name to lookup authority */
87 * Handle to a lookup operation from api
89 struct ClientLookupHandle
91 /* the requesting client that */
92 struct GNUNET_SERVER_Client *client;
98 enum GNUNET_GNS_RecordType type;
100 /* the name to look up */
101 char* name; //Needed?
105 * Our handle to the DHT
107 static struct GNUNET_DHT_Handle *dht_handle;
110 * Our zone's private key
112 struct GNUNET_CRYPTO_RsaPrivateKey *zone_key;
115 * Our handle to the namestore service
116 * FIXME maybe need a second handle for iteration
118 struct GNUNET_NAMESTORE_Handle *namestore_handle;
121 * Handle to iterate over our authoritative zone in namestore
123 struct GNUNET_NAMESTORE_ZoneIterator *namestore_iter;
126 * The configuration the GNS service is running with
128 const struct GNUNET_CONFIGURATION_Handle *GNS_cfg;
131 * Our notification context.
133 static struct GNUNET_SERVER_NotificationContext *nc;
138 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
141 * Useful for zone update for DHT put
143 static int num_public_records = 3600;
145 /* dht update interval FIXME define? */
146 static struct GNUNET_TIME_Relative dht_update_interval;
148 /* zone update task */
149 GNUNET_SCHEDULER_TaskIdentifier zone_update_taskid = GNUNET_SCHEDULER_NO_TASK;
151 /* automatic pkey import for name shortening */
152 static int auto_import_pkey;
155 static struct GNUNET_TIME_Relative default_lookup_timeout;
158 * Normalizes the name in old
160 * @param old the old name to normalize
161 * @param new the buffer to write the new name to
164 normalize_name(const char* old, char** new)
169 tmp_name = u8_tolower ((uint8_t*)old, strlen ((char *) old),
170 NULL, UNINORM_NFD, NULL, &n_len);
172 memcpy(*new, tmp_name, n_len);
173 (*new)[n_len] = '\0';
183 on_resolver_cleanup(void)
185 GNUNET_NAMESTORE_disconnect(namestore_handle, 1);
186 GNUNET_DHT_disconnect(dht_handle);
190 * Task run during shutdown.
196 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
199 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
201 /* Kill zone task for it may make the scheduler hang */
202 if (zone_update_taskid)
203 GNUNET_SCHEDULER_cancel(zone_update_taskid);
205 GNUNET_SERVER_notification_context_destroy (nc);
207 gns_interceptor_stop();
208 gns_resolver_cleanup(&on_resolver_cleanup);
214 * Method called periodicattluy that triggers
215 * iteration over root zone
218 * @param tc task context
221 update_zone_dht_next(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
223 GNUNET_NAMESTORE_zone_iterator_next(namestore_iter);
227 * Continuation for DHT put
230 * @param tc task context
233 record_dht_put(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
235 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "put request transmitted\n");
240 update_zone_dht_start(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
243 * Function used to put all records successively into the DHT.
245 * @param cls the closure (NULL)
246 * @param key the public key of the authority (ours)
247 * @param expiration lifetime of the namestore entry
248 * @param name the name of the records
249 * @param rd_count the number of records in data
250 * @param rd the record data
251 * @param signature the signature for the record data
254 put_gns_record(void *cls,
255 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *key,
256 struct GNUNET_TIME_Absolute expiration,
258 unsigned int rd_count,
259 const struct GNUNET_NAMESTORE_RecordData *rd,
260 const struct GNUNET_CRYPTO_RsaSignature *signature)
263 struct GNSNameRecordBlock *nrb;
264 struct GNUNET_CRYPTO_ShortHashCode name_hash;
265 GNUNET_HashCode xor_hash;
266 GNUNET_HashCode name_hash_double;
267 GNUNET_HashCode zone_hash_double;
268 struct GNUNET_CRYPTO_HashAsciiEncoded xor_hash_string;
269 uint32_t rd_payload_length;
270 char* nrb_data = NULL;
276 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
277 "Zone iteration finished. Rescheduling put in %ds\n",
278 GNUNET_GNS_DHT_MAX_UPDATE_INTERVAL);
279 zone_update_taskid = GNUNET_SCHEDULER_add_delayed (
280 GNUNET_TIME_relative_multiply(
281 GNUNET_TIME_UNIT_SECONDS,
282 GNUNET_GNS_DHT_MAX_UPDATE_INTERVAL
284 &update_zone_dht_start,
289 namelen = strlen(name) + 1;
291 if (signature == NULL)
293 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
294 "No signature for %s record data provided! Skipping...\n",
296 zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_next,
302 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
303 "Putting records for %s into the DHT\n", name);
305 rd_payload_length = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
307 nrb = GNUNET_malloc(rd_payload_length + namelen
308 + sizeof(struct GNSNameRecordBlock));
310 nrb->signature = *signature;
312 nrb->public_key = *key;
314 nrb->rd_count = htonl(rd_count);
316 memcpy(&nrb[1], name, namelen);
318 nrb_data = (char*)&nrb[1];
321 rd_payload_length += sizeof(struct GNSNameRecordBlock) + namelen;
323 if (-1 == GNUNET_NAMESTORE_records_serialize (rd_count,
328 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
329 "Record serialization failed! Skipping...\n");
331 zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_next,
338 * calculate DHT key: H(name) xor H(pubkey)
340 GNUNET_CRYPTO_short_hash(name, strlen(name), &name_hash);
341 GNUNET_CRYPTO_short_hash_double (&name_hash, &name_hash_double);
342 GNUNET_CRYPTO_short_hash_double (&zone_hash, &zone_hash_double);
343 GNUNET_CRYPTO_hash_xor(&zone_hash_double, &name_hash_double, &xor_hash);
344 GNUNET_CRYPTO_hash_to_enc (&xor_hash, &xor_hash_string);
346 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
347 "putting records for %s under key: %s with size %d\n",
348 name, (char*)&xor_hash_string, rd_payload_length);
350 GNUNET_DHT_put (dht_handle, &xor_hash,
351 DHT_GNS_REPLICATION_LEVEL,
353 GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
357 DHT_OPERATION_TIMEOUT,
359 NULL); //cls for cont
361 num_public_records++;
364 * Reschedule periodic put
366 zone_update_taskid = GNUNET_SCHEDULER_add_delayed (dht_update_interval,
367 &update_zone_dht_next,
375 * Periodically iterate over our zone and store everything in dht
378 * @param tc task context
381 update_zone_dht_start(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
383 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Scheduling DHT zone update!\n");
384 if (0 == num_public_records)
386 dht_update_interval = GNUNET_TIME_relative_multiply(
387 GNUNET_TIME_UNIT_SECONDS,
388 GNUNET_GNS_DHT_MAX_UPDATE_INTERVAL);
389 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
390 "No records in db. Adjusted DHT update interval to %ds\n",
391 GNUNET_GNS_DHT_MAX_UPDATE_INTERVAL);
396 dht_update_interval = GNUNET_TIME_relative_multiply(
397 GNUNET_TIME_UNIT_SECONDS,
398 (3600/num_public_records));
399 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
400 "Adjusted DHT update interval to %ds!\n",
401 (3600/num_public_records));
404 /* start counting again */
405 num_public_records = 0;
406 namestore_iter = GNUNET_NAMESTORE_zone_iteration_start (namestore_handle,
408 GNUNET_NAMESTORE_RF_AUTHORITY,
409 GNUNET_NAMESTORE_RF_PRIVATE,
415 /* END DHT ZONE PROPAGATION */
418 * Send shorten response back to client
420 * @param cls the closure containing a client shorten handle
421 * @param name the shortened name result or NULL if cannot be shortened
424 send_shorten_response(void* cls, const char* name)
426 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with %s\n",
427 "SHORTEN_RESULT", name);
428 struct GNUNET_GNS_ClientShortenResultMessage *rmsg;
429 struct ClientShortenHandle *csh = (struct ClientShortenHandle *)cls;
436 rmsg = GNUNET_malloc(sizeof(struct GNUNET_GNS_ClientShortenResultMessage)
439 rmsg->id = csh->unique_id;
440 rmsg->header.type = htons(GNUNET_MESSAGE_TYPE_GNS_SHORTEN_RESULT);
442 htons(sizeof(struct GNUNET_GNS_ClientShortenResultMessage) +
445 strcpy((char*)&rmsg[1], name);
447 GNUNET_SERVER_notification_context_unicast (nc, csh->client,
448 (const struct GNUNET_MessageHeader *) rmsg,
450 GNUNET_SERVER_receive_done (csh->client, GNUNET_OK);
453 GNUNET_free_non_null(csh->name);
459 * Handle a shorten message from the api
461 * @param cls the closure
462 * @param client the client
463 * @param message the message
465 static void handle_shorten(void *cls,
466 struct GNUNET_SERVER_Client * client,
467 const struct GNUNET_MessageHeader * message)
469 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "SHORTEN");
472 struct ClientShortenHandle *csh;
473 char name[MAX_DNS_NAME_LENGTH];
474 char* nameptr = name;
476 if (ntohs (message->size) < sizeof (struct GNUNET_GNS_ClientShortenMessage))
479 GNUNET_SERVER_receive_done (client, GNUNET_OK);
483 GNUNET_SERVER_notification_context_add (nc, client);
485 struct GNUNET_GNS_ClientShortenMessage *sh_msg =
486 (struct GNUNET_GNS_ClientShortenMessage *) message;
488 msg_size = ntohs(message->size);
490 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
493 GNUNET_SERVER_receive_done (client, GNUNET_OK);
497 csh = GNUNET_malloc(sizeof(struct ClientShortenHandle));
498 csh->client = client;
499 csh->unique_id = sh_msg->id;
501 GNUNET_STRINGS_utf8_tolower((char*)&sh_msg[1], &nameptr);
503 if (strlen (name) < strlen(GNUNET_GNS_TLD)) {
505 send_shorten_response(csh, name);
509 if (!is_gnunet_tld(name) && !is_zkey_tld(name))
511 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
512 "%s is not our domain. Returning\n", name);
514 send_shorten_response(csh, name);
518 /* Start shortening */
519 if (GNUNET_YES == auto_import_pkey)
520 gns_resolver_shorten_name(zone_hash, name, zone_key,
521 &send_shorten_response, csh);
523 gns_resolver_shorten_name(zone_hash, name, NULL,
524 &send_shorten_response, csh);
529 * Send get authority response back to client
531 * @param cls the closure containing a client get auth handle
532 * @param name the shortened name result or NULL if cannot be shortened
535 send_get_auth_response(void *cls, const char* name)
537 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with %s\n",
538 "GET_AUTH_RESULT", name);
539 struct GNUNET_GNS_ClientGetAuthResultMessage *rmsg;
540 struct ClientGetAuthHandle *cah = (struct ClientGetAuthHandle *)cls;
547 rmsg = GNUNET_malloc(sizeof(struct GNUNET_GNS_ClientGetAuthResultMessage)
550 rmsg->id = cah->unique_id;
551 rmsg->header.type = htons(GNUNET_MESSAGE_TYPE_GNS_GET_AUTH_RESULT);
553 htons(sizeof(struct GNUNET_GNS_ClientGetAuthResultMessage) +
556 strcpy((char*)&rmsg[1], name);
558 GNUNET_SERVER_notification_context_unicast (nc, cah->client,
559 (const struct GNUNET_MessageHeader *) rmsg,
561 GNUNET_SERVER_receive_done (cah->client, GNUNET_OK);
563 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up handles...\n");
566 GNUNET_free_non_null(cah->name);
569 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "done.\n");
575 * Handle a get authority message from the api
577 * @param cls the closure
578 * @param client the client
579 * @param message the message
581 static void handle_get_authority(void *cls,
582 struct GNUNET_SERVER_Client * client,
583 const struct GNUNET_MessageHeader * message)
585 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "GET_AUTH");
588 struct ClientGetAuthHandle *cah;
589 char name[MAX_DNS_NAME_LENGTH];
590 char* nameptr = name;
592 if (ntohs (message->size) < sizeof (struct GNUNET_GNS_ClientGetAuthMessage))
595 GNUNET_SERVER_receive_done (client, GNUNET_OK);
599 GNUNET_SERVER_notification_context_add (nc, client);
601 struct GNUNET_GNS_ClientGetAuthMessage *sh_msg =
602 (struct GNUNET_GNS_ClientGetAuthMessage *) message;
604 msg_size = ntohs(message->size);
606 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
609 GNUNET_SERVER_receive_done (client, GNUNET_OK);
613 GNUNET_STRINGS_utf8_tolower((char*)&sh_msg[1], &nameptr);
616 cah = GNUNET_malloc(sizeof(struct ClientGetAuthHandle));
617 cah->client = client;
618 cah->unique_id = sh_msg->id;
620 if (strlen(name) < strlen(GNUNET_GNS_TLD))
622 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
623 "%s is too short. Returning\n", name);
625 send_get_auth_response(cah, name);
629 if (strcmp(name+strlen(name)-strlen(GNUNET_GNS_TLD),
630 GNUNET_GNS_TLD) != 0)
632 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
633 "%s is not our domain. Returning\n", name);
635 send_get_auth_response(cah, name);
639 if (strcmp(name, GNUNET_GNS_TLD) == 0)
641 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
642 "%s is us. Returning\n", name);
644 send_get_auth_response(cah, name);
648 cah->name = GNUNET_malloc(strlen(name)
649 - strlen(GNUNET_GNS_TLD) + 1);
651 strlen(name)-strlen(GNUNET_GNS_TLD) + 1);
652 memcpy(cah->name, name,
653 strlen(name)-strlen(GNUNET_GNS_TLD));
655 /* Start delegation resolution in our namestore */
656 gns_resolver_get_authority(zone_hash, name, &send_get_auth_response, cah);
661 * Reply to client with the result from our lookup.
663 * @param cls the closure (our client lookup handle)
664 * @param rd_count the number of records
665 * @param rd the record data
668 send_lookup_response(void* cls,
670 const struct GNUNET_NAMESTORE_RecordData *rd)
672 struct ClientLookupHandle* clh = (struct ClientLookupHandle*)cls;
673 struct GNUNET_GNS_ClientLookupResultMessage *rmsg;
676 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with %d results\n",
677 "LOOKUP_RESULT", rd_count);
679 len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
680 rmsg = GNUNET_malloc(len+sizeof(struct GNUNET_GNS_ClientLookupResultMessage));
682 rmsg->id = clh->unique_id;
683 rmsg->rd_count = htonl(rd_count);
684 rmsg->header.type = htons(GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT);
686 htons(len+sizeof(struct GNUNET_GNS_ClientLookupResultMessage));
688 GNUNET_NAMESTORE_records_serialize (rd_count, rd, len, (char*)&rmsg[1]);
690 GNUNET_SERVER_notification_context_unicast (nc, clh->client,
691 (const struct GNUNET_MessageHeader *) rmsg,
693 GNUNET_SERVER_receive_done (clh->client, GNUNET_OK);
696 GNUNET_free(clh->name);
703 * Handle lookup requests from client
705 * @param cls the closure
706 * @param client the client
707 * @param message the message
710 handle_lookup(void *cls,
711 struct GNUNET_SERVER_Client * client,
712 const struct GNUNET_MessageHeader * message)
714 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "LOOKUP");
718 char name[MAX_DNS_NAME_LENGTH];
719 struct ClientLookupHandle *clh;
720 char* nameptr = name;
722 if (ntohs (message->size) < sizeof (struct GNUNET_GNS_ClientLookupMessage))
725 GNUNET_SERVER_receive_done (client, GNUNET_OK);
729 GNUNET_SERVER_notification_context_add (nc, client);
731 struct GNUNET_GNS_ClientLookupMessage *sh_msg =
732 (struct GNUNET_GNS_ClientLookupMessage *) message;
734 msg_size = ntohs(message->size);
736 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
739 GNUNET_SERVER_receive_done (client, GNUNET_OK);
743 GNUNET_STRINGS_utf8_tolower((char*)&sh_msg[1], &nameptr);
744 namelen = strlen(name)+1;
745 clh = GNUNET_malloc(sizeof(struct ClientLookupHandle));
746 clh->client = client;
747 clh->name = GNUNET_malloc(namelen);
748 strcpy(clh->name, name);
749 clh->unique_id = sh_msg->id;
750 clh->type = ntohl(sh_msg->type);
752 if (GNUNET_YES == auto_import_pkey)
754 gns_resolver_lookup_record(zone_hash, clh->type, name,
756 default_lookup_timeout,
757 &send_lookup_response, clh);
761 gns_resolver_lookup_record(zone_hash, clh->type, name,
763 default_lookup_timeout,
764 &send_lookup_response, clh);
771 * Process GNS requests.
773 * @param cls closure)
774 * @param server the initialized server
775 * @param c configuration to use
778 run (void *cls, struct GNUNET_SERVER_Handle *server,
779 const struct GNUNET_CONFIGURATION_Handle *c)
782 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Initializing GNS\n");
785 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
786 unsigned long long max_parallel_bg_queries = 0;
787 unsigned long long default_lookup_timeout_secs = 0;
789 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
790 {&handle_shorten, NULL, GNUNET_MESSAGE_TYPE_GNS_SHORTEN, 0},
791 {&handle_lookup, NULL, GNUNET_MESSAGE_TYPE_GNS_LOOKUP, 0},
792 {&handle_get_authority, NULL, GNUNET_MESSAGE_TYPE_GNS_GET_AUTH, 0}
795 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (c, "gns",
796 "ZONEKEY", &keyfile))
798 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
799 "No private key for root zone specified!\n");
800 GNUNET_SCHEDULER_shutdown(0);
804 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
805 "Using keyfile %s for root zone.\n", keyfile);
807 zone_key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
808 GNUNET_CRYPTO_rsa_key_get_public (zone_key, &pkey);
810 GNUNET_CRYPTO_short_hash(&pkey,
811 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
813 GNUNET_free(keyfile);
816 * handle to our local namestore
818 namestore_handle = GNUNET_NAMESTORE_connect(c);
820 if (NULL == namestore_handle)
822 //FIXME do error handling;
823 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
824 "Failed to connect to the namestore!\n");
825 GNUNET_SCHEDULER_shutdown(0);
832 dht_handle = GNUNET_DHT_connect(c, 1); //FIXME get ht_len from cfg
834 if (NULL == dht_handle)
836 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Could not connect to DHT!\n");
840 GNUNET_CONFIGURATION_get_value_yesno (c, "gns",
843 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
844 "Automatic PKEY import is enabled.\n");
845 auto_import_pkey = GNUNET_YES;
850 GNUNET_CONFIGURATION_get_value_number(c, "gns",
851 "MAX_PARALLEL_BACKGROUND_QUERIES",
852 &max_parallel_bg_queries))
854 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
855 "Number of allowed parallel background queries: %d\n",
856 max_parallel_bg_queries);
860 GNUNET_CONFIGURATION_get_value_number(c, "gns",
861 "DEFAULT_LOOKUP_TIMEOUT",
862 &default_lookup_timeout_secs))
864 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
865 "Default lookup timeout: %ds\n", default_lookup_timeout_secs);
866 default_lookup_timeout = GNUNET_TIME_relative_multiply(
867 GNUNET_TIME_UNIT_SECONDS,
868 default_lookup_timeout_secs);
871 if (gns_resolver_init(namestore_handle, dht_handle, zone_hash,
872 max_parallel_bg_queries)
875 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
876 "Unable to initialize resolver!\n");
877 GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
882 GNUNET_CONFIGURATION_get_value_yesno (c, "gns", "HIJACK_DNS"))
884 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
885 "DNS hijacking enabled... connecting to service.\n");
887 if (gns_interceptor_init(zone_hash, zone_key, c) == GNUNET_SYSERR)
889 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
890 "Failed to enable the dns interceptor!\n");
894 //put_some_records(); //FIXME for testing
897 * Schedule periodic put
899 * We have roughly an hour for all records;
901 dht_update_interval = GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
903 zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_start, NULL);
905 GNUNET_SERVER_add_handlers (server, handlers);
908 //GNUNET_SERVER_disconnect_notify (server,
909 // &client_disconnect_notification,
912 nc = GNUNET_SERVER_notification_context_create (server, 1);
914 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
920 * The main function for the GNS service.
922 * @param argc number of arguments from the command line
923 * @param argv command line arguments
924 * @return 0 ok, 1 on error
927 main (int argc, char *const *argv)
933 GNUNET_SERVICE_run (argc, argv, "gns", GNUNET_SERVICE_OPTION_NONE, &run,
938 /* end of gnunet-service-gns.c */