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.
24 * - Write xquery and block plugin
25 * - Think about mixed dns queries (.gnunet and .org)
26 * - (de-)serialisation of records/signature trees
27 * - The smaller FIXME issues all around
29 * @file gns/gnunet-service-gns.c
30 * @brief GNUnet GNS service
31 * @author Martin Schanzenbach
34 #include "gnunet_util_lib.h"
35 #include "gnunet_transport_service.h"
36 #include "gnunet_dns_service.h"
37 #include "gnunet_dnsparser_lib.h"
38 #include "gnunet_dht_service.h"
39 #include "gnunet_namestore_service.h"
40 #include "gnunet_gns_service.h"
43 /* Ignore for now not used anyway and probably never will */
44 #define GNUNET_MESSAGE_TYPE_GNS_CLIENT_LOOKUP 23
45 #define GNUNET_MESSAGE_TYPE_GNS_CLIENT_RESULT 24
47 struct GNUNET_GNS_QueryRecordList
52 struct GNUNET_GNS_QueryRecordList * next;
53 struct GNUNET_GNS_QueryRecordList * prev;
55 struct GNUNET_NAMESTORE_RecordData * record;
59 * A result list for namestore queries
61 struct GNUNET_GNS_PendingQuery
63 /* the answer packet */
64 struct GNUNET_DNSPARSER_Packet *answer;
66 /* records to put into answer packet */
67 struct GNUNET_GNS_QueryRecordList * records_head;
68 struct GNUNET_GNS_QueryRecordList * records_tail;
71 int num_authority_records; //FIXME are all of our replies auth?
77 /* the dns request id */
78 int id; // FIXME can handle->request_id also be used here?
80 /* the request handle to reply to */
81 struct GNUNET_DNS_RequestHandle *request_handle;
83 /* hast this query been answered? */
86 /* the authoritative zone to query */
87 GNUNET_HashCode *authority;
89 /* we have an authority in namestore that
90 * may be able to resolve
97 * Our handle to the DNS handler library
99 struct GNUNET_DNS_Handle *dns_handle;
102 * Our handle to the DHT
104 struct GNUNET_DHT_Handle *dht_handle;
107 * Our zone's private key
109 struct GNUNET_CRYPTO_RsaPrivateKey *zone_key;
112 * Our handle to the namestore service
114 struct GNUNET_NAMESTORE_Handle *namestore_handle;
116 struct GNUNET_NAMESTORE_ZoneIterator *namestore_iter;
119 * The configuration the GNS service is running with
121 const struct GNUNET_CONFIGURATION_Handle *GNS_cfg;
124 * Our notification context.
126 static struct GNUNET_SERVER_NotificationContext *nc;
131 GNUNET_HashCode zone_hash;
134 * Our tld. Maybe get from config file
136 const char* gnunet_tld = ".gnunet";
139 * Useful for zone update for DHT put
141 static int num_public_records = 3600;
142 struct GNUNET_TIME_Relative dht_update_interval;
145 * Task run during shutdown.
151 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
153 GNUNET_DNS_disconnect(dns_handle);
154 GNUNET_NAMESTORE_disconnect(namestore_handle, 0);
155 GNUNET_DHT_disconnect(dht_handle);
159 * Function called when we get a result from the dht
162 * @param cls the query handle
163 * @param exp lifetime
164 * @param key the key the record was stored under
165 * @param get_path get path
166 * @param get_path_length get path length
167 * @param put_path put path
168 * @param put_path_length put path length
169 * @param type the block type
170 * @param size the size of the record
171 * @param data the record data
174 process_authority_dht_result(void* cls,
175 struct GNUNET_TIME_Absolute exp,
176 const GNUNET_HashCode * key,
177 const struct GNUNET_PeerIdentity *get_path,
178 unsigned int get_path_length,
179 const struct GNUNET_PeerIdentity *put_path,
180 unsigned int put_path_length,
181 enum GNUNET_BLOCK_Type type,
182 size_t size, const void *data)
188 * data is a serialized PKEY record (probably)
189 * parse, put into namestore
190 * namestore zone hash is in query.
191 * Then adjust query->name and call resolve_name
192 * with new zone (the one just received)
194 * query->authority = new_authority
195 * resolve_name(query, new_authority);
200 * Start DHT lookup for a name -> PKEY (compare NS) record in
201 * query->authority's zone
203 * @param query the pending gns query
204 * @param name the name of the PKEY record
207 resolve_authority_dht(struct GNUNET_GNS_PendingQuery *query, const char* name)
209 enum GNUNET_GNS_RecordType rtype = GNUNET_GNS_RECORD_PKEY;
210 struct GNUNET_TIME_Relative timeout;
211 GNUNET_HashCode name_hash;
212 GNUNET_HashCode lookup_key;
214 GNUNET_CRYPTO_hash(name, strlen(name), &name_hash);
215 GNUNET_CRYPTO_hash_xor(&name_hash, query->authority, &lookup_key);
217 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20);
219 //FIXME how long to wait for results?
220 GNUNET_DHT_get_start(dht_handle, timeout,
221 GNUNET_BLOCK_TYPE_TEST, //FIXME todo
223 5, //Replication level FIXME
225 &rtype, //xquery FIXME this is bad
226 sizeof(GNUNET_GNS_RECORD_PKEY),
227 &process_authority_dht_result,
233 * Function called when we get a result from the dht
236 * @param cls the query handle
237 * @param exp lifetime
238 * @param key the key the record was stored under
239 * @param get_path get path
240 * @param get_path_length get path length
241 * @param put_path put path
242 * @param put_path_length put path length
243 * @param type the block type
244 * @param size the size of the record
245 * @param data the record data
248 process_name_dht_result(void* cls,
249 struct GNUNET_TIME_Absolute exp,
250 const GNUNET_HashCode * key,
251 const struct GNUNET_PeerIdentity *get_path,
252 unsigned int get_path_length,
253 const struct GNUNET_PeerIdentity *put_path,
254 unsigned int put_path_length,
255 enum GNUNET_BLOCK_Type type,
256 size_t size, const void *data)
258 uint32_t num_records;
261 struct GNUNET_CRYPTO_RsaSignature *signature;
264 GNUNET_HashCode zone, name_hash;
271 num_records = ntohl(*pos);
272 struct GNUNET_NAMESTORE_RecordData rd[num_records];
274 pos += sizeof(uint32_t);
276 for (i=0; i<num_records; i++)
278 namelen = ntohs(*pos);
279 pos += sizeof(uint16_t);
281 //name must be 0 terminated
285 rd[i].record_type = ntohl(*pos);
286 pos += sizeof(uint32_t);
288 rd[i].data_size = ntohl(*pos);
289 pos += sizeof(uint32_t);
292 pos += rd[i].data_size;
294 rd[i].expiration = GNUNET_TIME_absolute_ntoh(
295 *((struct GNUNET_TIME_AbsoluteNBO*)pos));
296 pos += sizeof(struct GNUNET_TIME_AbsoluteNBO);
298 rd[i].flags = ntohs(*pos);
299 pos += sizeof(uint16_t);
303 if ((((char*)data)-pos) < sizeof(struct GNUNET_CRYPTO_RsaSignature))
305 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
306 "Cannot parse signature in DHT response. Corrupted or Missing");
310 signature = (struct GNUNET_CRYPTO_RsaSignature*)pos;
312 GNUNET_CRYPTO_hash(name, strlen(name), &name_hash);
313 GNUNET_CRYPTO_hash_xor(key, &name_hash, &zone);
316 GNUNET_NAMESTORE_record_put (namestore_handle,
327 * data is a serialized GNS record of type
328 * Check if record type and name match in query and reply
334 * Start DHT lookup for a (name -> query->record_type) record in
335 * query->authority's zone
337 * @param query the pending gns query
338 * @param name the name to query record
341 resolve_name_dht(struct GNUNET_GNS_PendingQuery *query, const char* name)
343 struct GNUNET_TIME_Relative timeout;
344 GNUNET_HashCode name_hash;
345 GNUNET_HashCode lookup_key;
347 GNUNET_CRYPTO_hash(name, strlen(name), &name_hash);
348 GNUNET_CRYPTO_hash_xor(&name_hash, query->authority, &lookup_key);
350 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20);
352 //FIXME how long to wait for results?
353 GNUNET_DHT_get_start(dht_handle, timeout,
354 GNUNET_BLOCK_TYPE_TEST, //FIXME todo
356 5, //Replication level FIXME
358 &query->type, //xquery
360 &process_name_dht_result,
367 resolve_name(struct GNUNET_GNS_PendingQuery *query, GNUNET_HashCode *zone);
370 * This is a callback function that should give us only PKEY
371 * records. Used to query the namestore for the authority (PKEY)
374 * @param cls the pending query
375 * @param zone our zone hash
376 * @param name the name for which we need an authority
377 * @param record_type the type of record (PKEY)
378 * @param expiration expiration date of the record
379 * @param flags namestore record flags
380 * @param sig_loc the location of the record in the signature tree
381 * @param size the size of the record
382 * @param data the record data
385 process_authority_lookup(void* cls,
386 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *key,
387 struct GNUNET_TIME_Absolute expiration,
389 unsigned int rd_count,
390 const struct GNUNET_NAMESTORE_RecordData *rd,
391 const struct GNUNET_CRYPTO_RsaSignature *signature)
393 struct GNUNET_GNS_PendingQuery *query;
394 GNUNET_HashCode zone;
396 query = (struct GNUNET_GNS_PendingQuery *)cls;
397 GNUNET_CRYPTO_hash(key, GNUNET_CRYPTO_RSA_KEY_LENGTH, &zone);
400 * No authority found in namestore.
404 if (query->authority_found)
406 query->authority_found = 0;
407 resolve_name(query, query->authority);
412 * We did not find an authority in the namestore
413 * _IF_ the current authoritative zone is us we cannot resolve
414 * _ELSE_ we can still check the dht
416 if (GNUNET_CRYPTO_hash_cmp(&zone, &zone_hash))
418 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Authority unknown\n");
419 //FIXME return NX answer
423 resolve_authority_dht(query, name);
427 //Note only 1 pkey should have been returned.. anything else would be strange
429 * We found an authority that may be able to help us
433 GNUNET_assert(rd->record_type == GNUNET_GNS_RECORD_PKEY);
434 GNUNET_HashCode *pkey_hash = GNUNET_malloc(sizeof(GNUNET_HashCode));
435 GNUNET_CRYPTO_hash(rd->data, GNUNET_CRYPTO_RSA_KEY_LENGTH, pkey_hash);
436 GNUNET_free_non_null(query->authority);
437 query->authority = pkey_hash;
438 resolve_name(query, query->authority);
444 * Reply to client with the result from our lookup.
446 * @param answer the pending query used in the lookup
449 reply_to_dns(struct GNUNET_GNS_PendingQuery *answer)
451 struct GNUNET_GNS_QueryRecordList *i;
452 struct GNUNET_DNSPARSER_Packet *packet;
453 struct GNUNET_DNSPARSER_Flags dnsflags;
459 packet = GNUNET_malloc(sizeof(struct GNUNET_DNSPARSER_Packet));
461 GNUNET_malloc(sizeof(struct GNUNET_DNSPARSER_Record) * answer->num_records);
463 len = sizeof(struct GNUNET_DNSPARSER_Record*);
465 for (i=answer->records_head; i != NULL; i=i->next)
467 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
468 "Adding type %d to DNS response\n", i->record->record_type);
469 //FIXME build proper dnsparser record! this will fail!
470 //memcpy(&packet->answers[j],
472 // sizeof (struct GNUNET_DNSPARSER_Record));
473 GNUNET_free(i->record);
476 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "after memcpy\n");
477 /* FIXME how to handle auth, additional etc */
478 packet->num_answers = answer->num_records;
479 packet->num_authority_records = answer->num_authority_records;
481 dnsflags.authoritative_answer = 1;
482 dnsflags.opcode = GNUNET_DNSPARSER_OPCODE_QUERY;
483 dnsflags.return_code = GNUNET_DNSPARSER_RETURN_CODE_NO_ERROR; //not sure
484 dnsflags.query_or_response = 1;
485 packet->flags = dnsflags;
487 packet->id = answer->id;
489 //FIXME this is silently discarded
490 ret = GNUNET_DNSPARSER_pack (packet,
491 1024, /* FIXME magic from dns redirector */
494 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
495 "Built DNS response! (ret=%d)\n", ret);
496 if (ret == GNUNET_OK)
498 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
499 "Answering DNS request\n");
500 GNUNET_DNS_request_answer(answer->request_handle,
503 //GNUNET_free(answer);
504 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Answered DNS request\n");
505 //FIXME return code, free datastructures
509 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
510 "Error building DNS response! (ret=%d)", ret);
516 * Namestore calls this function if we have an entry for this name.
517 * (or data=null to indicate the lookup has finished)
519 * @param cls the pending query
520 * @param zone the zone of the lookup
521 * @param name the name looked up
522 * @param record_type the record type
523 * @param expiration lifetime of the record
524 * @param flags record flags
525 * @param sig_loc location of the record in the signature tree
526 * @param size the size of the record
527 * @param data the record data
530 process_authoritative_result(void* cls,
531 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *key,
532 struct GNUNET_TIME_Absolute expiration,
533 const char *name, unsigned int rd_count,
534 const struct GNUNET_NAMESTORE_RecordData *rd,
535 const struct GNUNET_CRYPTO_RsaSignature *signature)
537 struct GNUNET_GNS_PendingQuery *query;
538 struct GNUNET_GNS_QueryRecordList *qrecord;
539 struct GNUNET_NAMESTORE_RecordData *record;
540 GNUNET_HashCode zone;
541 query = (struct GNUNET_GNS_PendingQuery *) cls;
542 GNUNET_CRYPTO_hash(key, GNUNET_CRYPTO_RSA_KEY_LENGTH, &zone);
544 //FIXME Handle results in rd
550 * Lookup terminated and no results
551 * -> DHT Phase unless data is recent
553 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
554 "Namestore lookup terminated. without results\n");
557 * if this is not our zone we cannot rely on the namestore to be
558 * complete. -> Query DHT
560 if (!GNUNET_CRYPTO_hash_cmp(&zone, &zone_hash))
562 //FIXME if very recent dht lookup -> cannot resolve
563 resolve_name_dht(query, name);
568 * Our zone and no result? Cannot resolve TT
569 * FIXME modify query to say NX
571 GNUNET_assert(query->answered == 0);
572 reply_to_dns(query); //answered should be 0
581 * FIXME Check record expiration and dht expiration
582 * consult dht if necessary
584 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
585 "Processing additional result %s from namestore\n", name);
587 for (i=0; i<rd_count;i++)
589 // A time will come when this has to be freed
590 qrecord = GNUNET_malloc(sizeof(struct GNUNET_GNS_QueryRecordList));
591 record = GNUNET_malloc(sizeof(struct GNUNET_NAMESTORE_RecordData));
592 qrecord->record = record;
594 //fixme into gns_util
595 //parse_record(rd[i]->data, rd[i]->data_size, 0, record);
596 GNUNET_CONTAINER_DLL_insert(query->records_head,
599 query->num_records++;
602 //we need to resolve to the original name in the end though...
603 //keep in mind. This can also be done later probably
604 //record->name = (char*)query->original_name;
607 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Found answer to query!\n");
615 * Determine if this name is canonical.
617 * a.b.gnunet = not canonical
620 * @param name the name to test
621 * @return 1 if canonical
624 is_canonical(char* name)
626 uint32_t len = strlen(name);
629 for (i=0; i<len; i++)
631 if (*(name+i) == '.')
638 * Move one level up in the domain hierarchy and return the
639 * passed top level domain.
640 * FIXME this needs a better name
642 * @param name the domain
645 char* pop_tld(char* name)
649 if (is_canonical(name))
652 for (len = strlen(name); len > 0; len--)
654 if (*(name+len) == '.')
661 name[len] = '\0'; //terminate string
668 * The first phase of resolution.
669 * First check if the name is canonical.
670 * If it is then try to resolve directly.
671 * If not then first have to resolve the authoritative entities.
673 * @param query the pending lookup
674 * @param zone the zone we are currently resolving in
677 resolve_name(struct GNUNET_GNS_PendingQuery *query, GNUNET_HashCode *zone)
679 if (is_canonical(query->name))
681 //We only need to check this zone's ns
682 GNUNET_NAMESTORE_lookup_record(namestore_handle,
686 &process_authoritative_result,
691 //We have to resolve the authoritative entity
692 char *new_authority = pop_tld(query->name);
693 GNUNET_NAMESTORE_lookup_record(namestore_handle,
696 GNUNET_GNS_RECORD_PKEY,
697 &process_authority_lookup,
703 * Entry point for name resolution
704 * Lookup local namestore of our zone.
706 * Setup a new query and try to resolve
708 * @param rh the request handle of the DNS request from a client
709 * @param name the name to look up
710 * @param id the id of the dns request (for the reply)
711 * @param type the record type to look for
714 start_resolution(struct GNUNET_DNS_RequestHandle *rh,
715 char* name, uint16_t id, uint16_t type)
717 struct GNUNET_GNS_PendingQuery *query;
719 //FIXME remove .gnunet here from name
720 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "This is .gnunet (%s)!\n", name);
721 query = GNUNET_malloc(sizeof (struct GNUNET_GNS_PendingQuery));
723 query->original_name = name; //Full name of original query
725 //FIXME do not forget to free!!
726 query->name = GNUNET_malloc(strlen(name)-strlen(gnunet_tld) + 1);
727 memset(query->name, 0, strlen(name)-strlen(gnunet_tld) + 1);
728 memcpy(query->name, name, strlen(name)-strlen(gnunet_tld));
731 query->request_handle = rh;
733 //Start resolution in our zone
734 resolve_name(query, &zone_hash);
738 * The DNS request handler
739 * Called for every incoming DNS request.
742 * @param rh request handle to user for reply
743 * @param request_length number of bytes in request
744 * @param request udp payload of the DNS request
747 handle_dns_request(void *cls,
748 struct GNUNET_DNS_RequestHandle *rh,
749 size_t request_length,
752 struct GNUNET_DNSPARSER_Packet *p;
756 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Hijacked a DNS request...processing\n");
757 p = GNUNET_DNSPARSER_parse (request, request_length);
761 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
762 "Received malformed DNS packet, leaving it untouched\n");
763 GNUNET_DNS_request_forward (rh);
768 * Check tld and decide if we or
769 * legacy dns is responsible
771 * FIXME now in theory there could be more than 1 query in the request
772 * but if this is case we get into trouble:
773 * either we query the GNS or the DNS. We cannot do both!
774 * So I suggest to either only allow a single query per request or
775 * only allow GNS or DNS requests.
776 * The way it is implemented here now is buggy and will lead to erratic
777 * behaviour (if multiple queries are present).
779 for (i=0;i<p->num_queries;i++)
781 tldoffset = p->queries[i].name + strlen(p->queries[i].name);
783 while ((*tldoffset) != '.')
786 if (0 == strcmp(tldoffset, gnunet_tld))
788 start_resolution(rh, p->queries[i].name, p->id, p->queries[i].type);
793 * This request does not concern us. Forward to real DNS.
795 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
796 "Request for %s is forwarded to DNS\n", p->queries[i].name);
797 GNUNET_DNS_request_forward (rh);
803 * test function that stores some data in the namestore
806 put_some_records(void)
808 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Populating namestore\n");
809 /* put a few records into namestore */
810 char* ipA = "1.2.3.4";
811 char* ipB = "5.6.7.8";
812 struct in_addr *alice = GNUNET_malloc(sizeof(struct in_addr));
813 struct in_addr *bob = GNUNET_malloc(sizeof(struct in_addr));
814 struct GNUNET_NAMESTORE_RecordData *rda;
815 struct GNUNET_NAMESTORE_RecordData *rdb;
817 rda = GNUNET_malloc(sizeof(struct GNUNET_NAMESTORE_RecordData));
818 rdb = GNUNET_malloc(sizeof(struct GNUNET_NAMESTORE_RecordData));
820 GNUNET_assert(1 == inet_pton (AF_INET, ipA, alice));
821 GNUNET_assert(1 == inet_pton (AF_INET, ipB, bob));
823 rda->data_size = sizeof(struct in_addr);
824 rdb->data_size = sizeof(struct in_addr);
827 rda->record_type = GNUNET_GNS_RECORD_TYPE_A;
828 rdb->record_type = GNUNET_GNS_RECORD_TYPE_A;
829 rda->expiration = GNUNET_TIME_absolute_get_forever ();
830 rdb->expiration = GNUNET_TIME_absolute_get_forever ();
832 GNUNET_NAMESTORE_record_create (namestore_handle,
838 GNUNET_NAMESTORE_record_create (namestore_handle,
847 update_zone_dht_next(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
849 GNUNET_NAMESTORE_zone_iterator_next(namestore_iter);
853 * Function used to put all records successively into the DHT.
855 * @param cls the closure (NULL)
856 * @param zone our root zone hash
857 * @param name the name of the record
858 * @param record_type the type of the record
859 * @param expiration lifetime of the record
860 * @param flags flags of the record
861 * @param sig_loc location of record in signature tree
862 * @param size size of the record
863 * @param record_data the record data
866 put_gns_record(void *cls,
867 const const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *key,
868 struct GNUNET_TIME_Absolute expiration,
870 unsigned int rd_count,
871 const struct GNUNET_NAMESTORE_RecordData *rd,
872 const struct GNUNET_CRYPTO_RsaSignature *signature)
874 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Putting records into the DHT\n");
875 struct GNUNET_TIME_Relative timeout;
876 GNUNET_HashCode name_hash;
877 GNUNET_HashCode xor_hash;
879 if (NULL == name) //We're done
881 GNUNET_NAMESTORE_zone_iteration_stop (namestore_iter);
885 * FIXME magic number 20 move to config file
887 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20);
888 GNUNET_CRYPTO_hash(name, strlen(name), &name_hash);
889 GNUNET_CRYPTO_hash_xor(&zone_hash, &name_hash, &xor_hash);
890 GNUNET_DHT_put (dht_handle, &xor_hash,
891 5, //replication level
893 GNUNET_BLOCK_TYPE_TEST, //FIXME todo block plugin
898 NULL, //FIXME continuation needed? success check? yes ofc
899 NULL); //cls for cont
902 * Reschedule periodic put
904 GNUNET_SCHEDULER_add_delayed (dht_update_interval,
905 &update_zone_dht_next,
911 * Periodically iterate over our zone and store everything in dht
914 * @param tc task context
917 update_zone_dht_start(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
919 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Update zone!\n");
920 dht_update_interval = GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
921 (3600/num_public_records));
922 namestore_iter = GNUNET_NAMESTORE_zone_iteration_start (namestore_handle,
924 GNUNET_NAMESTORE_RF_AUTHORITY,
925 GNUNET_NAMESTORE_RF_PRIVATE,
931 * Process GNS requests.
934 * @param server the initialized server
935 * @param c configuration to use
938 run (void *cls, struct GNUNET_SERVER_Handle *server,
939 const struct GNUNET_CONFIGURATION_Handle *c)
942 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Init GNS\n");
943 zone_key = GNUNET_CRYPTO_rsa_key_create ();
945 GNUNET_CRYPTO_hash(zone_key, GNUNET_CRYPTO_RSA_KEY_LENGTH,//FIXME is this ok?
947 nc = GNUNET_SERVER_notification_context_create (server, 1);
949 /* FIXME - do some config parsing
950 * - Maybe only hijack dns if option is set (HIJACK_DNS=1)
953 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
956 * Do gnunet dns init here
958 dns_handle = GNUNET_DNS_connect(c,
959 GNUNET_DNS_FLAG_PRE_RESOLUTION,
960 &handle_dns_request, /* rh */
963 if (NULL == dns_handle)
965 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
966 "Failed to connect to the dnsservice!\n");
970 * handle to our local namestore
972 namestore_handle = GNUNET_NAMESTORE_connect(c);
974 if (NULL == namestore_handle)
976 //FIXME do error handling;
977 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
978 "Failed to connect to the namestore!\n");
984 dht_handle = GNUNET_DHT_connect(c, 1); //FIXME get ht_len from cfg
986 if (NULL == dht_handle)
988 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Could not connect to DHT!\n");
991 put_some_records(); //FIXME for testing
994 * Schedule periodic put
996 * We have roughly an hour for all records;
998 dht_update_interval = GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
999 60); //FIXME from cfg
1000 GNUNET_SCHEDULER_add_delayed (dht_update_interval,
1001 &update_zone_dht_start,
1003 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "GNS Init done!\n");
1009 * The main function for the GNS service.
1011 * @param argc number of arguments from the command line
1012 * @param argv command line arguments
1013 * @return 0 ok, 1 on error
1016 main (int argc, char *const *argv)
1022 GNUNET_SERVICE_run (argc, argv, "gns", GNUNET_SERVICE_OPTION_NONE, &run,
1027 /* end of gnunet-service-gns.c */