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_DNSPARSER_Record * 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;
106 struct GNUNET_TIME_Relative dht_update_interval;
109 * Our zone's private key
111 struct GNUNET_CRYPTO_RsaPrivateKey *zone_key;
114 * Our handle to the namestore service
116 struct GNUNET_NAMESTORE_Handle *namestore_handle;
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 * Task run during shutdown.
145 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
147 GNUNET_DNS_disconnect(dns_handle);
148 GNUNET_NAMESTORE_disconnect(namestore_handle, 0);
149 GNUNET_DHT_disconnect(dht_handle);
153 * Function called when we get a result from the dht
156 * @param cls the query handle
157 * @param exp lifetime
158 * @param key the key the record was stored under
159 * @param get_path get path
160 * @param get_path_length get path length
161 * @param put_path put path
162 * @param put_path_length put path length
163 * @param type the block type
164 * @param size the size of the record
165 * @param data the record data
168 process_authority_dht_result(void* cls,
169 struct GNUNET_TIME_Absolute exp,
170 const GNUNET_HashCode * key,
171 const struct GNUNET_PeerIdentity *get_path,
172 unsigned int get_path_length,
173 const struct GNUNET_PeerIdentity *put_path,
174 unsigned int put_path_length,
175 enum GNUNET_BLOCK_Type type,
176 size_t size, const void *data)
182 * data is a serialized PKEY record (probably)
183 * parse, put into namestore
184 * namestore zone hash is in query.
185 * Then adjust query->name and call resolve_name
186 * with new zone (the one just received)
188 * query->authority = new_authority
189 * resolve_name(query, new_authority);
194 * Start DHT lookup for a name -> PKEY (compare NS) record in
195 * query->authority's zone
197 * @param query the pending gns query
198 * @param name the name of the PKEY record
201 resolve_authority_dht(struct GNUNET_GNS_PendingQuery *query, const char* name)
203 enum GNUNET_GNS_RecordType rtype = GNUNET_GNS_RECORD_PKEY;
204 struct GNUNET_TIME_Relative timeout;
205 GNUNET_HashCode name_hash;
206 GNUNET_HashCode lookup_key;
208 GNUNET_CRYPTO_hash(name, strlen(name), &name_hash);
209 GNUNET_CRYPTO_hash_xor(&name_hash, query->authority, &lookup_key);
211 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20);
213 //FIXME how long to wait for results?
214 GNUNET_DHT_get_start(dht_handle, timeout,
215 GNUNET_BLOCK_TYPE_TEST, //FIXME todo
217 5, //Replication level FIXME
219 &rtype, //xquery FIXME this is bad
220 sizeof(GNUNET_GNS_RECORD_PKEY),
221 &process_authority_dht_result,
227 * Function called when we get a result from the dht
230 * @param cls the query handle
231 * @param exp lifetime
232 * @param key the key the record was stored under
233 * @param get_path get path
234 * @param get_path_length get path length
235 * @param put_path put path
236 * @param put_path_length put path length
237 * @param type the block type
238 * @param size the size of the record
239 * @param data the record data
242 process_name_dht_result(void* cls,
243 struct GNUNET_TIME_Absolute exp,
244 const GNUNET_HashCode * key,
245 const struct GNUNET_PeerIdentity *get_path,
246 unsigned int get_path_length,
247 const struct GNUNET_PeerIdentity *put_path,
248 unsigned int put_path_length,
249 enum GNUNET_BLOCK_Type type,
250 size_t size, const void *data)
256 * data is a serialized GNS record of type
257 * query->record_type. Parse and put into namestore
258 * namestore zone hash is in query.
259 * Check if record type and name match in query and reply
265 * Start DHT lookup for a (name -> query->record_type) record in
266 * query->authority's zone
268 * @param query the pending gns query
269 * @param name the name to query record
272 resolve_name_dht(struct GNUNET_GNS_PendingQuery *query, const char* name)
274 struct GNUNET_TIME_Relative timeout;
275 GNUNET_HashCode name_hash;
276 GNUNET_HashCode lookup_key;
278 GNUNET_CRYPTO_hash(name, strlen(name), &name_hash);
279 GNUNET_CRYPTO_hash_xor(&name_hash, query->authority, &lookup_key);
281 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20);
283 //FIXME how long to wait for results?
284 GNUNET_DHT_get_start(dht_handle, timeout,
285 GNUNET_BLOCK_TYPE_TEST, //FIXME todo
287 5, //Replication level FIXME
289 &query->type, //xquery
291 &process_name_dht_result,
298 resolve_name(struct GNUNET_GNS_PendingQuery *query, GNUNET_HashCode *zone);
301 * This is a callback function that should give us only PKEY
302 * records. Used to query the namestore for the authority (PKEY)
305 * @param cls the pending query
306 * @param zone our zone hash
307 * @param name the name for which we need an authority
308 * @param record_type the type of record (PKEY)
309 * @param expiration expiration date of the record
310 * @param flags namestore record flags
311 * @param sig_loc the location of the record in the signature tree
312 * @param size the size of the record
313 * @param data the record data
316 process_authority_lookup(void* cls, const GNUNET_HashCode *zone,
317 const char *name, uint32_t record_type,
318 struct GNUNET_TIME_Absolute expiration,
319 enum GNUNET_NAMESTORE_RecordFlags flags,
320 size_t size, const void *data)
322 struct GNUNET_GNS_PendingQuery *query;
324 query = (struct GNUNET_GNS_PendingQuery *)cls;
327 * No authority found in namestore.
331 if (query->authority_found)
333 query->authority_found = 0;
334 resolve_name(query, query->authority);
339 * We did not find an authority in the namestore
340 * _IF_ the current authoritative zone is us.
342 * _ELSE_ we cannot still check the dht
344 if (GNUNET_CRYPTO_hash_cmp(zone, &zone_hash))
346 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Authority unknown\n");
347 //FIXME return NX answer
351 resolve_authority_dht(query, name);
356 * We found an authority that may be able to help us
359 query->authority_found = 1;
360 GNUNET_HashCode *key = (GNUNET_HashCode*) data; //FIXME i assume this works
361 query->authority = key;
367 * Reply to client with the result from our lookup.
369 * @param answer the pending query used in the lookup
372 reply_to_dns(struct GNUNET_GNS_PendingQuery *answer)
374 struct GNUNET_GNS_QueryRecordList *i;
375 struct GNUNET_DNSPARSER_Packet *packet;
376 struct GNUNET_DNSPARSER_Flags dnsflags;
382 packet = GNUNET_malloc(sizeof(struct GNUNET_DNSPARSER_Packet));
384 GNUNET_malloc(sizeof(struct GNUNET_DNSPARSER_Record) * answer->num_records);
386 len = sizeof(struct GNUNET_DNSPARSER_Record*);
388 for (i=answer->records_head; i != NULL; i=i->next)
390 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
391 "Adding %s to DNS response\n", i->record->name);
392 memcpy(&packet->answers[j],
394 sizeof (struct GNUNET_DNSPARSER_Record));
395 GNUNET_free(i->record);
398 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "after memcpy\n");
399 /* FIXME how to handle auth, additional etc */
400 packet->num_answers = answer->num_records;
401 packet->num_authority_records = answer->num_authority_records;
403 dnsflags.authoritative_answer = 1;
404 dnsflags.opcode = GNUNET_DNSPARSER_OPCODE_QUERY;
405 dnsflags.return_code = GNUNET_DNSPARSER_RETURN_CODE_NO_ERROR; //not sure
406 dnsflags.query_or_response = 1;
407 packet->flags = dnsflags;
409 packet->id = answer->id;
411 //FIXME this is silently discarded
412 ret = GNUNET_DNSPARSER_pack (packet,
413 1024, /* FIXME magic from dns redirector */
416 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
417 "Built DNS response! (ret=%d)\n", ret);
418 if (ret == GNUNET_OK)
420 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
421 "Answering DNS request\n");
422 GNUNET_DNS_request_answer(answer->request_handle,
425 //GNUNET_free(answer);
426 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Answered DNS request\n");
427 //FIXME return code, free datastructures
431 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
432 "Error building DNS response! (ret=%d)", ret);
438 * Namestore calls this function if we have an entry for this name.
439 * (or data=null to indicate the lookup has finished)
441 * @param cls the pending query
442 * @param zone the zone of the lookup
443 * @param name the name looked up
444 * @param record_type the record type
445 * @param expiration lifetime of the record
446 * @param flags record flags
447 * @param sig_loc location of the record in the signature tree
448 * @param size the size of the record
449 * @param data the record data
452 process_authoritative_result(void* cls, const GNUNET_HashCode *zone,
453 const char *name, uint32_t record_type,
454 struct GNUNET_TIME_Absolute expiration,
455 enum GNUNET_NAMESTORE_RecordFlags flags,
456 size_t size, const void *data)
458 struct GNUNET_GNS_PendingQuery *query;
459 struct GNUNET_GNS_QueryRecordList *qrecord;
460 struct GNUNET_DNSPARSER_Record *record;
461 query = (struct GNUNET_GNS_PendingQuery *) cls;
469 * Do we have what we need to answer?
470 * If not -> DHT Phase
471 * if full_name == next_name and not anwered we cannot resolve
473 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
474 "Namestore lookup terminated. (answered=%d)", query->answered);
482 * if this is not our zone we cannot rely on the namestore to be
483 * complete. -> Query DHT
485 if (!GNUNET_CRYPTO_hash_cmp(zone, &zone_hash))
488 resolve_name_dht(query, name);
493 * Our zone and no result? Cannot resolve TT
494 * FIXME modify query to say NX
504 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
505 "Processing additional result for %s from namestore\n", name);
507 qrecord = GNUNET_malloc(sizeof(struct GNUNET_GNS_QueryRecordList));
508 record = GNUNET_malloc(sizeof(struct GNUNET_DNSPARSER_Record));
509 qrecord->record = record;
511 record->name = (char*)query->original_name;
514 * FIXME for gns records this requires the dnsparser to be modified!
515 * or use RAW. But RAW data need serialization!
516 * maybe store record data appropriately in namestore to avoid a
517 * huge switch statement?
519 if (record_type == GNUNET_DNSPARSER_TYPE_A)
521 record->data.raw.data = (char*)data;
522 record->data.raw.data_len = size;
524 record->expiration_time = expiration;
525 record->type = record_type;
526 record->class = GNUNET_DNSPARSER_CLASS_INTERNET; /* srsly? */
528 //FIXME authoritative answer if we find a result in namestore
529 if (flags == GNUNET_NAMESTORE_RF_AUTHORITY)
531 //query->num_authority_records++;
535 * This seems to take into account that the result could
536 * be different in name and or record type...
537 * but to me this does not make sense
539 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Found answer to query!\n");
542 query->num_records++;
545 * FIXME watch for leaks
546 * properly free pendingquery when the time comes
548 GNUNET_CONTAINER_DLL_insert(query->records_head,
555 * Determine if this name is canonical.
557 * a.b.gnunet = not canonical
560 * @param name the name to test
561 * @return 1 if canonical
564 is_canonical(char* name)
566 uint32_t len = strlen(name);
569 for (i=0; i<len; i++)
571 if (*(name+i) == '.')
578 * Move one level up in the domain hierarchy and return the
579 * passed top level domain.
580 * FIXME this needs a better name
582 * @param name the domain
585 char* move_up(char* name)
589 if (is_canonical(name))
592 for (len = strlen(name); len > 0; len--)
594 if (*(name+len) == '.')
601 name[len] = '\0'; //terminate string
608 * The first phase of resolution.
609 * First check if the name is canonical.
610 * If it is then try to resolve directly.
611 * If not then first have to resolve the authoritative entities.
613 * @param query the pending lookup
614 * @param zone the zone we are currently resolving in
617 resolve_name(struct GNUNET_GNS_PendingQuery *query, GNUNET_HashCode *zone)
619 if (is_canonical(query->name))
621 //We only need to check this zone's ns
622 GNUNET_NAMESTORE_lookup_record(namestore_handle,
626 &process_authoritative_result,
631 //We have to resolve the authoritative entity
632 char *new_authority = move_up(query->name);
633 GNUNET_NAMESTORE_lookup_record(namestore_handle,
636 GNUNET_GNS_RECORD_PKEY,
637 &process_authority_lookup,
643 * Entry point for name resolution
644 * Lookup local namestore of our zone.
646 * Setup a new query and try to resolve
648 * @param rh the request handle of the DNS request from a client
649 * @param name the name to look up
650 * @param id the id of the dns request (for the reply)
651 * @param type the record type to look for
654 start_resolution(struct GNUNET_DNS_RequestHandle *rh,
655 char* name, uint16_t id, uint16_t type)
657 struct GNUNET_GNS_PendingQuery *query;
659 //FIXME remove .gnunet here from name
660 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "This is .gnunet (%s)!\n", name);
661 query = GNUNET_malloc(sizeof (struct GNUNET_GNS_PendingQuery));
663 query->original_name = name; //Full name of original query
665 //FIXME do not forget to free!!
666 query->name = GNUNET_malloc(strlen(name)-strlen(gnunet_tld) + 1);
667 memset(query->name, 0, strlen(name)-strlen(gnunet_tld) + 1);
668 memcpy(query->name, name, strlen(name)-strlen(gnunet_tld));
671 query->request_handle = rh;
673 //Start resolution in our zone
674 resolve_name(query, &zone_hash);
678 * The DNS request handler
679 * Called for every incoming DNS request.
682 * @param rh request handle to user for reply
683 * @param request_length number of bytes in request
684 * @param request udp payload of the DNS request
687 handle_dns_request(void *cls,
688 struct GNUNET_DNS_RequestHandle *rh,
689 size_t request_length,
692 struct GNUNET_DNSPARSER_Packet *p;
696 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Hijacked a DNS request...processing\n");
697 p = GNUNET_DNSPARSER_parse (request, request_length);
701 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
702 "Received malformed DNS packet, leaving it untouched\n");
703 GNUNET_DNS_request_forward (rh);
708 * Check tld and decide if we or
709 * legacy dns is responsible
711 * FIXME now in theory there could be more than 1 query in the request
712 * but if this is case we get into trouble:
713 * either we query the GNS or the DNS. We cannot do both!
714 * So I suggest to either only allow a single query per request or
715 * only allow GNS or DNS requests.
716 * The way it is implemented here now is buggy and will lead to erratic
717 * behaviour (if multiple queries are present).
719 for (i=0;i<p->num_queries;i++)
721 tldoffset = p->queries[i].name + strlen(p->queries[i].name);
723 while ((*tldoffset) != '.')
726 if (0 == strcmp(tldoffset, gnunet_tld))
728 start_resolution(rh, p->queries[i].name, p->id, p->queries[i].type);
733 * This request does not concern us. Forward to real DNS.
735 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
736 "Request for %s is forwarded to DNS\n", p->queries[i].name);
737 GNUNET_DNS_request_forward (rh);
743 * test function that stores some data in the namestore
746 put_some_records(void)
748 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Populating namestore\n");
749 /* put a few records into namestore */
750 char* ipA = "1.2.3.4";
751 char* ipB = "5.6.7.8";
752 struct in_addr *alice = GNUNET_malloc(sizeof(struct in_addr));
753 struct in_addr *bob = GNUNET_malloc(sizeof(struct in_addr));
754 GNUNET_assert(1 == inet_pton (AF_INET, ipA, alice));
755 GNUNET_assert(1 == inet_pton (AF_INET, ipB, bob));
756 GNUNET_NAMESTORE_record_put (namestore_handle,
759 GNUNET_GNS_RECORD_TYPE_A,
760 GNUNET_TIME_absolute_get_forever(),
761 GNUNET_NAMESTORE_RF_AUTHORITY,
762 sizeof(struct in_addr),
766 GNUNET_NAMESTORE_record_put (namestore_handle,
769 GNUNET_GNS_RECORD_TYPE_A,
770 GNUNET_TIME_absolute_get_forever(),
771 GNUNET_NAMESTORE_RF_AUTHORITY,
772 sizeof(struct in_addr),
778 //Prototype... needed in put function
780 update_zone_dht(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
783 * Function used to put all records successively into the DHT.
784 * FIXME also serializes records. maybe do this somewhere else...
785 * FIXME don't store private records (maybe zone transfer does this)
787 * @param cls the closure (NULL)
788 * @param zone our root zone hash
789 * @param name the name of the record
790 * @param record_type the type of the record
791 * @param expiration lifetime of the record
792 * @param flags flags of the record
793 * @param sig_loc location of record in signature tree
794 * @param size size of the record
795 * @param record_data the record data
798 put_gns_record(void *cls, const GNUNET_HashCode *zone, const char *name,
799 uint32_t record_type, struct GNUNET_TIME_Absolute expiration,
800 enum GNUNET_NAMESTORE_RecordFlags flags,
801 size_t size, const void *record_data)
803 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Putting a record into the DHT\n");
804 struct GNUNET_TIME_Relative timeout;
808 struct GNUNET_TIME_AbsoluteNBO exp_nbo;
809 exp_nbo = GNUNET_TIME_absolute_hton (expiration);
810 uint32_t namelen = htonl(strlen(name));
811 uint16_t flags_nbo = htons(flags);
812 GNUNET_HashCode name_hash;
813 GNUNET_HashCode xor_hash;
816 * I guess this can be done prettier
817 * FIXME extract into function, maybe even into different file
819 size_t record_len = sizeof(size_t) + sizeof(uint32_t) +
821 sizeof(uint32_t) + strlen(name) + size;
823 record_type = htonl(record_type);
825 data = GNUNET_malloc(record_len);
829 memcpy(data_ptr, &namelen, sizeof(size_t));
830 data_ptr += sizeof(size_t);
832 memcpy(data_ptr, name, namelen);
835 memcpy(data_ptr, &record_type, sizeof(uint32_t));
836 data_ptr += sizeof(uint32_t);
838 memcpy(data_ptr, &exp_nbo, sizeof(struct GNUNET_TIME_AbsoluteNBO));
839 data_ptr += sizeof(struct GNUNET_TIME_AbsoluteNBO);
841 memcpy(data_ptr, &flags_nbo, sizeof(uint16_t));
842 data_ptr += sizeof(uint16_t);
844 memcpy(data_ptr, &size, sizeof(uint32_t));
845 data_ptr += sizeof(uint32_t);
848 * FIXME note that this only works with raw data in nbo
849 * write helper function that converts properly and returns buffer
851 memcpy(data_ptr, record_data, size);
853 /*Doing this made me sad...*/
856 * FIXME magic number 20 move to config file
858 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20);
860 GNUNET_CRYPTO_hash(name, strlen(name), &name_hash);
861 GNUNET_CRYPTO_hash_xor(&zone_hash, &name_hash, &xor_hash);
862 GNUNET_DHT_put (dht_handle, &xor_hash,
863 5, //replication level
865 GNUNET_BLOCK_TYPE_TEST, //FIXME todo block plugin
868 expiration, //FIXME from record makes sense? is absolute?
870 NULL, //FIXME continuation needed? success check? yes ofc
871 NULL); //cls for cont
874 * Reschedule periodic put
876 GNUNET_SCHEDULER_add_delayed (dht_update_interval,
883 * Periodically iterate over our zone and store everything in dht
886 * @param tc task context
889 update_zone_dht(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
891 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Update zone!\n");
892 GNUNET_NAMESTORE_zone_transfer (namestore_handle, &zone_hash,
898 * Process GNS requests.
901 * @param server the initialized server
902 * @param c configuration to use
905 run (void *cls, struct GNUNET_SERVER_Handle *server,
906 const struct GNUNET_CONFIGURATION_Handle *c)
909 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Init GNS\n");
910 zone_key = GNUNET_CRYPTO_rsa_key_create ();
912 GNUNET_CRYPTO_hash(zone_key, GNUNET_CRYPTO_RSA_KEY_LENGTH,//FIXME is this ok?
914 nc = GNUNET_SERVER_notification_context_create (server, 1);
916 /* FIXME - do some config parsing
917 * - Maybe only hijack dns if option is set (HIJACK_DNS=1)
920 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
923 * Do gnunet dns init here
925 dns_handle = GNUNET_DNS_connect(c,
926 GNUNET_DNS_FLAG_PRE_RESOLUTION,
927 &handle_dns_request, /* rh */
930 if (NULL == dns_handle)
932 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
933 "Failed to connect to the dnsservice!\n");
937 * handle to our local namestore
939 namestore_handle = GNUNET_NAMESTORE_connect(c);
941 if (NULL == namestore_handle)
943 //FIXME do error handling;
944 GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
945 "Failed to connect to the namestore!\n");
951 dht_handle = GNUNET_DHT_connect(c, 1); //FIXME get ht_len from cfg
953 if (NULL == dht_handle)
955 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Could not connect to DHT!\n");
958 put_some_records(); //FIXME for testing
961 * Schedule periodic put
964 dht_update_interval = GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
965 60); //FIXME from cfg
966 GNUNET_SCHEDULER_add_delayed (dht_update_interval,
969 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "GNS Init done!\n");
975 * The main function for the GNS service.
977 * @param argc number of arguments from the command line
978 * @param argv command line arguments
979 * @return 0 ok, 1 on error
982 main (int argc, char *const *argv)
988 GNUNET_SERVICE_run (argc, argv, "gns", GNUNET_SERVICE_OPTION_NONE, &run,
993 /* end of gnunet-service-gns.c */