2 This file is part of GNUnet.
3 (C) 2012 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.
22 * @file namestore/gnunet-service-namestore.c
23 * @brief namestore for the GNUnet naming system
24 * @author Matthias Wachs
27 #include "gnunet_getopt_lib.h"
28 #include "gnunet_service_lib.h"
29 #include "gnunet_namestore_service.h"
30 #include "gnunet_namestore_plugin.h"
31 #include "gnunet_signatures.h"
32 #include "namestore.h"
34 #define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
37 * A namestore operation.
39 struct GNUNET_NAMESTORE_ZoneIteration
42 * Next element in the DLL
44 struct GNUNET_NAMESTORE_ZoneIteration *next;
47 * Previous element in the DLL
49 struct GNUNET_NAMESTORE_ZoneIteration *prev;
52 * Namestore client which intiated this zone iteration
54 struct GNUNET_NAMESTORE_Client *client;
57 * GNUNET_YES if we iterate over a specific zone
58 * GNUNET_NO if we iterate over all zones
63 * Hash of the specific zone if 'has_zone' is GNUNET_YES,
64 * othwerwise set to '\0'
66 struct GNUNET_CRYPTO_ShortHashCode zone;
69 * The operation id fot the zone iteration in the response for the client
74 * Offset of the zone iteration used to address next result of the zone
75 * iteration in the store
77 * Initialy set to 0 in handle_iteration_start
78 * Incremented with by every call to handle_iteration_next
83 * Which flags must be included
85 uint16_t must_have_flags;
88 * Which flags must not be included
90 uint16_t must_not_have_flags;
97 struct GNUNET_NAMESTORE_Client
100 * Next element in the DLL
102 struct GNUNET_NAMESTORE_Client *next;
105 * Previous element in the DLL
107 struct GNUNET_NAMESTORE_Client *prev;
112 struct GNUNET_SERVER_Client *client;
116 * Zone iteration operations in progress initiated by this client
118 struct GNUNET_NAMESTORE_ZoneIteration *op_head;
122 * Zone iteration operations in progress initiated by this client
124 struct GNUNET_NAMESTORE_ZoneIteration *op_tail;
129 * A container struct to store information belonging to a zone crypto key pair
131 struct GNUNET_NAMESTORE_CryptoContainer
134 * Filename where to store the container
139 * Short hash of the zone's public key
141 struct GNUNET_CRYPTO_ShortHashCode zone;
146 struct GNUNET_CRYPTO_RsaPrivateKey *privkey;
152 * Configuration handle.
154 static const struct GNUNET_CONFIGURATION_Handle *GSN_cfg;
159 static struct GNUNET_NAMESTORE_PluginFunctions *GSN_database;
164 static char *zonefile_directory;
167 * Name of the database plugin
169 static char *db_lib_name;
172 * Our notification context.
174 static struct GNUNET_SERVER_NotificationContext *snc;
177 * Head of the Client DLL
179 static struct GNUNET_NAMESTORE_Client *client_head;
182 * Tail of the Client DLL
184 static struct GNUNET_NAMESTORE_Client *client_tail;
187 * Hashmap containing the zone keys this namestore has is authoritative for
189 * Keys are the GNUNET_CRYPTO_HashCode of the GNUNET_CRYPTO_ShortHashCode
190 * The values are 'struct GNUNET_NAMESTORE_CryptoContainer *'
192 static struct GNUNET_CONTAINER_MultiHashMap *zonekeys;
196 * Writes the encrypted private key of a zone in a file
198 * @param filename where to store the zone
199 * @param c the crypto container containing private key of the zone
200 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
203 write_key_to_file (const char *filename,
204 struct GNUNET_NAMESTORE_CryptoContainer *c)
206 struct GNUNET_CRYPTO_RsaPrivateKey *ret = c->privkey;
207 struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded *enc;
208 struct GNUNET_DISK_FileHandle *fd;
209 struct GNUNET_CRYPTO_ShortHashCode zone;
210 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pubkey;
211 struct GNUNET_CRYPTO_RsaPrivateKey *privkey;
213 fd = GNUNET_DISK_file_open (filename,
214 GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE | GNUNET_DISK_OPEN_FAILIFEXISTS,
215 GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
216 if ( (NULL == fd) && (EEXIST == errno) )
218 privkey = GNUNET_CRYPTO_rsa_key_create_from_file (filename);
221 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
222 _("Failed to write zone key to file `%s': %s\n"),
224 _("file exists but reading key failed"));
225 return GNUNET_SYSERR;
227 GNUNET_CRYPTO_rsa_key_get_public (privkey, &pubkey);
228 GNUNET_CRYPTO_short_hash (&pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone);
229 GNUNET_CRYPTO_rsa_key_free (privkey);
230 if (0 == memcmp (&zone, &c->zone, sizeof(zone)))
232 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
233 "File zone `%s' containing this key already exists\n",
234 GNUNET_short_h2s (&zone));
237 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
238 _("Failed to write zone key to file `%s': %s\n"),
240 _("file exists with different key"));
245 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "open", filename);
246 return GNUNET_SYSERR;
248 if (GNUNET_YES != GNUNET_DISK_file_lock (fd, 0, sizeof (struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded), GNUNET_YES))
250 GNUNET_break (GNUNET_YES == GNUNET_DISK_file_close (fd));
251 return GNUNET_SYSERR;
253 enc = GNUNET_CRYPTO_rsa_encode_key (ret);
254 GNUNET_assert (NULL != enc);
255 GNUNET_assert (ntohs (enc->len) == GNUNET_DISK_file_write (fd, enc, ntohs (enc->len)));
257 GNUNET_DISK_file_sync (fd);
258 if (GNUNET_YES != GNUNET_DISK_file_unlock (fd, 0, sizeof (struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded)))
259 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "fcntl", filename);
260 GNUNET_assert (GNUNET_YES == GNUNET_DISK_file_close (fd));
261 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
262 "Stored zonekey for zone `%s' in file `%s'\n",
263 GNUNET_short_h2s(&c->zone), c->filename);
269 * Write allthe given zone key to disk and then removes the entry from the
270 * 'zonekeys' hash map.
273 * @param key zone key
274 * @param value 'struct GNUNET_NAMESTORE_CryptoContainer' containing the private
276 * @return GNUNET_OK to continue iteration
279 zone_to_disk_it (void *cls,
280 const struct GNUNET_HashCode *key,
283 struct GNUNET_NAMESTORE_CryptoContainer *c = value;
285 if (NULL == c->filename)
286 GNUNET_asprintf(&c->filename,
289 GNUNET_short_h2s (&c->zone));
290 (void) write_key_to_file(c->filename, c);
291 GNUNET_assert (GNUNET_OK == GNUNET_CONTAINER_multihashmap_remove (zonekeys, key, value));
292 GNUNET_CRYPTO_rsa_key_free (c->privkey);
293 GNUNET_free (c->filename);
300 * Returns the expiration time of the given block of records. The block
301 * expiration time is the expiration time of the block with smallest
304 * @param rd_count number of records given in 'rd'
305 * @param rd array of records
306 * @return absolute expiration time
308 static struct GNUNET_TIME_Absolute
309 get_block_expiration_time (unsigned int rd_count, const struct GNUNET_NAMESTORE_RecordData *rd)
312 struct GNUNET_TIME_Absolute expire;
313 struct GNUNET_TIME_Absolute at;
314 struct GNUNET_TIME_Relative rt;
317 return GNUNET_TIME_UNIT_ZERO_ABS;
318 expire = GNUNET_TIME_UNIT_FOREVER_ABS;
319 for (c = 0; c < rd_count; c++)
321 if (0 != (rd[c].flags & GNUNET_NAMESTORE_RF_RELATIVE_EXPIRATION))
323 rt.rel_value = rd[c].expiration_time;
324 at = GNUNET_TIME_relative_to_absolute (rt);
328 at.abs_value = rd[c].expiration_time;
330 expire = GNUNET_TIME_absolute_min (at, expire);
337 * Task run during shutdown.
343 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
345 struct GNUNET_NAMESTORE_ZoneIteration *no;
346 struct GNUNET_NAMESTORE_Client *nc;
348 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopping namestore service\n");
351 GNUNET_SERVER_notification_context_destroy (snc);
354 GNUNET_CONTAINER_multihashmap_iterate (zonekeys, &zone_to_disk_it, NULL);
355 GNUNET_CONTAINER_multihashmap_destroy (zonekeys);
357 while (NULL != (nc = client_head))
359 while (NULL != (no = nc->op_head))
361 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
364 GNUNET_SERVER_client_drop(nc->client);
365 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
368 GNUNET_break (NULL == GNUNET_PLUGIN_unload (db_lib_name, GSN_database));
369 GNUNET_free (db_lib_name);
371 GNUNET_free_non_null (zonefile_directory);
372 zonefile_directory = NULL;
377 * Lookup our internal data structure for a given client.
379 * @param client server client handle to use for the lookup
380 * @return our internal structure for the client, NULL if
381 * we do not have any yet
383 static struct GNUNET_NAMESTORE_Client *
384 client_lookup (struct GNUNET_SERVER_Client *client)
386 struct GNUNET_NAMESTORE_Client *nc;
388 GNUNET_assert (NULL != client);
389 for (nc = client_head; NULL != nc; nc = nc->next)
390 if (client == nc->client)
397 * Called whenever a client is disconnected.
398 * Frees our resources associated with that client.
401 * @param client identification of the client
404 client_disconnect_notification (void *cls,
405 struct GNUNET_SERVER_Client *client)
407 struct GNUNET_NAMESTORE_ZoneIteration *no;
408 struct GNUNET_NAMESTORE_Client *nc;
412 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
413 "Client %p disconnected\n",
415 nc = client_lookup (client);
418 while (NULL != (no = nc->op_head))
420 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
423 GNUNET_SERVER_client_drop (nc->client);
424 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
430 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_START' message
433 * @param client GNUNET_SERVER_Client sending the message
434 * @param message unused
437 handle_start (void *cls,
438 struct GNUNET_SERVER_Client *client,
439 const struct GNUNET_MessageHeader *message)
441 struct GNUNET_NAMESTORE_Client *nc;
443 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
444 "Client %p connected\n", client);
445 if (NULL != client_lookup (client))
448 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
451 nc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Client));
453 GNUNET_SERVER_notification_context_add (snc, client);
454 GNUNET_CONTAINER_DLL_insert (client_head, client_tail, nc);
455 GNUNET_SERVER_client_keep (client);
456 GNUNET_SERVER_receive_done (client, GNUNET_OK);
461 * Context for name lookups passed from 'handle_lookup_name' to
462 * 'handle_lookup_name_it' as closure
464 struct LookupNameContext
467 * The client to send the response to
469 struct GNUNET_NAMESTORE_Client *nc;
474 const struct GNUNET_CRYPTO_ShortHashCode *zone;
482 * Operation id for the name lookup
487 * Requested specific record type
489 uint32_t record_type;
494 * A 'GNUNET_NAMESTORE_RecordIterator' for name lookups in handle_lookup_name
496 * @param cls a 'struct LookupNameContext *' with information about the request
497 * @param zone_key zone key of the zone
498 * @param expire expiration time
500 * @param rd_count number of records
501 * @param rd array of records
502 * @param signature signature
505 handle_lookup_name_it (void *cls,
506 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
507 struct GNUNET_TIME_Absolute expire,
509 unsigned int rd_count,
510 const struct GNUNET_NAMESTORE_RecordData *rd,
511 const struct GNUNET_CRYPTO_RsaSignature *signature)
513 struct LookupNameContext *lnc = cls;
514 struct LookupNameResponseMessage *lnr_msg;
515 struct GNUNET_NAMESTORE_RecordData *rd_selected;
516 struct GNUNET_NAMESTORE_CryptoContainer *cc;
517 struct GNUNET_CRYPTO_RsaSignature *signature_new;
518 struct GNUNET_TIME_Absolute e;
519 struct GNUNET_CRYPTO_ShortHashCode zone_key_hash;
520 struct GNUNET_HashCode long_hash;
527 int contains_signature;
531 name_len = (NULL == name) ? 0 : strlen(name) + 1;
534 /* count records to copy */
535 if (0 != lnc->record_type)
537 /* special record type needed */
538 for (c = 0; c < rd_count; c++)
539 if (rd[c].record_type == lnc->record_type)
540 copied_elements++; /* found matching record */
541 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
542 "Found %u records with type %u for name `%s' in zone `%s'\n",
546 GNUNET_short_h2s(lnc->zone));
547 if (copied_elements > 0)
549 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
551 for (c = 0; c < rd_count; c++)
553 if (rd[c].record_type == lnc->record_type)
555 /* found matching record */
556 rd_selected[copied_elements] = rd[c]; /* shallow copy! */
564 copied_elements = rd_count;
565 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
567 // FIXME: need to adjust 'rd' from relative to absolute times!
568 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
569 "Found %u records for name `%s' in zone `%s'\n",
572 GNUNET_short_h2s (lnc->zone));
574 if ((copied_elements == rd_count) && (NULL != signature))
575 contains_signature = GNUNET_YES; /* returning all records, so include signature */
577 contains_signature = GNUNET_NO; /* returning not all records, so do not include signature */
579 authoritative = GNUNET_NO;
580 signature_new = NULL;
581 if ((NULL != zone_key) && (copied_elements == rd_count))
583 GNUNET_CRYPTO_short_hash (zone_key,
584 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
586 GNUNET_CRYPTO_short_hash_double (&zone_key_hash, &long_hash);
587 if (NULL != (cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &long_hash)))
589 e = get_block_expiration_time (rd_count, rd);
590 signature_new = GNUNET_NAMESTORE_create_signature (cc->privkey, e, name, rd, rd_count);
591 GNUNET_assert (NULL != signature_new);
592 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
593 "Creating signature for name `%s' with %u records in zone `%s'\n",
596 GNUNET_short_h2s(&zone_key_hash));
597 authoritative = GNUNET_YES;
601 rd_ser_len = GNUNET_NAMESTORE_records_get_size (copied_elements, rd_selected);
602 r_size = sizeof (struct LookupNameResponseMessage) +
603 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
606 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
607 "Sending `%s' message\n",
608 "NAMESTORE_LOOKUP_NAME_RESPONSE");
609 lnr_msg = GNUNET_malloc (r_size);
610 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
611 lnr_msg->gns_header.header.size = ntohs (r_size);
612 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
613 lnr_msg->rd_count = htons (copied_elements);
614 lnr_msg->rd_len = htons (rd_ser_len);
615 lnr_msg->name_len = htons (name_len);
616 lnr_msg->expire = GNUNET_TIME_absolute_hton (get_block_expiration_time (copied_elements,
618 name_tmp = (char *) &lnr_msg[1];
619 memcpy (name_tmp, name, name_len);
620 rd_tmp = &name_tmp[name_len];
621 GNUNET_NAMESTORE_records_serialize (copied_elements, rd_selected, rd_ser_len, rd_tmp);
623 if (rd_selected != rd)
624 GNUNET_free_non_null (rd_selected);
626 if (NULL != zone_key)
627 lnr_msg->public_key = *zone_key;
628 if (GNUNET_YES == authoritative)
630 /* use new created signature */
631 lnr_msg->contains_sig = htons (GNUNET_YES);
632 GNUNET_assert (NULL != signature_new);
633 lnr_msg->signature = *signature_new;
634 GNUNET_free (signature_new);
636 else if (GNUNET_YES == contains_signature)
638 /* use existing signature */
639 lnr_msg->contains_sig = htons (GNUNET_YES);
640 GNUNET_assert (NULL != signature);
641 lnr_msg->signature = *signature;
643 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client,
644 &lnr_msg->gns_header.header,
646 GNUNET_free (lnr_msg);
651 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME' message
654 * @param client GNUNET_SERVER_Client sending the message
655 * @param message message of type 'struct LookupNameMessage'
658 handle_lookup_name (void *cls,
659 struct GNUNET_SERVER_Client *client,
660 const struct GNUNET_MessageHeader *message)
662 const struct LookupNameMessage *ln_msg;
663 struct LookupNameContext lnc;
664 struct GNUNET_NAMESTORE_Client *nc;
670 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
671 "Received `%s' message\n",
672 "NAMESTORE_LOOKUP_NAME");
673 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
676 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
679 if (NULL == (nc = client_lookup(client)))
682 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
685 ln_msg = (const struct LookupNameMessage *) message;
686 rid = ntohl (ln_msg->gns_header.r_id);
687 name_len = ntohl (ln_msg->name_len);
688 type = ntohl (ln_msg->record_type);
689 if ((0 == name_len) || (name_len > MAX_NAME_LEN))
692 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
695 name = (const char *) &ln_msg[1];
696 if (name[name_len -1] != '\0')
699 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
702 if (GNUNET_NAMESTORE_TYPE_ANY == type)
703 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
704 "Looking up all records for name `%s' in zone `%s'\n",
706 GNUNET_short_h2s(&ln_msg->zone));
708 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
709 "Looking up records with type %u for name `%s' in zone `%s'\n",
711 GNUNET_short_h2s(&ln_msg->zone));
713 /* do the actual lookup */
714 lnc.request_id = rid;
716 lnc.record_type = type;
718 lnc.zone = &ln_msg->zone;
720 GSN_database->iterate_records (GSN_database->cls,
721 &ln_msg->zone, name, 0 /* offset */,
722 &handle_lookup_name_it, &lnc))
724 /* internal error (in database plugin); might be best to just hang up on
725 plugin rather than to signal that there are 'no' results, which
726 might also be false... */
728 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
731 GNUNET_SERVER_receive_done (client, GNUNET_OK);
736 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT' message
739 * @param client GNUNET_SERVER_Client sending the message
740 * @param message message of type 'struct RecordPutMessage'
743 handle_record_put (void *cls,
744 struct GNUNET_SERVER_Client *client,
745 const struct GNUNET_MessageHeader *message)
747 struct GNUNET_NAMESTORE_Client *nc;
748 const struct RecordPutMessage *rp_msg;
749 struct GNUNET_TIME_Absolute expire;
750 const struct GNUNET_CRYPTO_RsaSignature *signature;
751 struct RecordPutResponseMessage rpr_msg;
752 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
763 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
764 "Received `%s' message\n",
765 "NAMESTORE_RECORD_PUT");
766 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
769 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
772 if (NULL == (nc = client_lookup (client)))
775 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
778 rp_msg = (const struct RecordPutMessage *) message;
779 rid = ntohl (rp_msg->gns_header.r_id);
780 msg_size = ntohs (rp_msg->gns_header.header.size);
781 name_len = ntohs (rp_msg->name_len);
782 rd_count = ntohs (rp_msg->rd_count);
783 rd_ser_len = ntohs (rp_msg->rd_len);
784 if ((rd_count < 1) || (rd_ser_len < 1) || (name_len >= MAX_NAME_LEN) || (0 == name_len))
787 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
790 msg_size_exp = sizeof (struct RecordPutMessage) + name_len + rd_ser_len;
791 if (msg_size != msg_size_exp)
794 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
797 name = (const char *) &rp_msg[1];
798 if ('\0' != name[name_len -1])
801 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
804 expire = GNUNET_TIME_absolute_ntoh (rp_msg->expire);
805 signature = &rp_msg->signature;
806 rd_ser = &name[name_len];
808 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
811 GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd))
814 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
817 GNUNET_CRYPTO_short_hash (&rp_msg->public_key,
818 sizeof (rp_msg->public_key),
820 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
821 "Putting %u records under name `%s' in zone `%s'\n",
823 GNUNET_short_h2s (&zone_hash));
824 res = GSN_database->put_records(GSN_database->cls,
830 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
831 "Putting record for name `%s': %s\n",
833 (res == GNUNET_OK) ? "OK" : "FAILED");
835 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
836 "Sending `%s' message\n",
837 "RECORD_PUT_RESPONSE");
838 rpr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
839 rpr_msg.gns_header.header.size = htons (sizeof (struct RecordPutResponseMessage));
840 rpr_msg.gns_header.r_id = htonl (rid);
841 rpr_msg.op_result = htonl (res);
842 GNUNET_SERVER_notification_context_unicast (snc,
844 &rpr_msg.gns_header.header,
846 GNUNET_SERVER_receive_done (client, GNUNET_OK);
851 * Context for record create operations passed from 'handle_record_create' to
852 * 'handle_create_record_it' as closure
854 struct CreateRecordContext
859 const struct GNUNET_NAMESTORE_RecordData *rd;
864 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey;
867 * Name for the record to create
872 * Record expiration time
874 struct GNUNET_TIME_Absolute expire;
877 * result returned from 'handle_create_record_it'
878 * GNUNET_SYSERR: failed to create the record
879 * GNUNET_NO: we updated an existing record or identical entry existed
880 * GNUNET_YES : we created a new record
887 * A 'GNUNET_NAMESTORE_RecordIterator' for record create operations
888 * in handle_record_create
890 * @param cls a 'struct CreateRecordContext *' with information about the request
891 * @param pubkey zone key of the zone
892 * @param expire expiration time
894 * @param rd_count number of records
895 * @param rd array of records
896 * @param signature signature
899 handle_create_record_it (void *cls,
900 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey,
901 struct GNUNET_TIME_Absolute expire,
903 unsigned int rd_count,
904 const struct GNUNET_NAMESTORE_RecordData *rd,
905 const struct GNUNET_CRYPTO_RsaSignature *signature)
907 static struct GNUNET_CRYPTO_RsaSignature dummy_signature;
908 struct CreateRecordContext *crc = cls;
909 struct GNUNET_NAMESTORE_RecordData *rd_new;
910 struct GNUNET_TIME_Absolute block_expiration;
914 unsigned int rd_count_new;
916 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
917 "Found %u existing records for `%s'\n",
918 rd_count, crc->name);
921 for (c = 0; c < rd_count; c++)
923 if (crc->rd->record_type != rd[c].record_type)
924 continue; /* no match */
925 if ( (GNUNET_NAMESTORE_TYPE_PKEY == crc->rd->record_type) ||
926 (GNUNET_NAMESTORE_TYPE_PSEU == crc->rd->record_type) )
928 /* Update unique PKEY or PSEU */
929 /* FIXME: should we do this test here? Is this not something
930 that should be handled closer to the UI? If not, what
931 about othrer 'unique' record types like CNAME? */
933 if ( (crc->rd->data_size != rd[c].data_size) ||
934 (0 != memcmp (crc->rd->data, rd[c].data, rd[c].data_size)) ||
935 (crc->rd->expiration_time != rd[c].expiration_time) ||
936 ((crc->rd->flags & GNUNET_NAMESTORE_RF_RELATIVE_EXPIRATION)
937 != (rd[c].flags & GNUNET_NAMESTORE_RF_RELATIVE_EXPIRATION)) )
941 if ( (crc->rd->data_size == rd[c].data_size) &&
942 (0 == memcmp (crc->rd->data, rd[c].data, rd[c].data_size)))
944 /* FIXME: again, do we need to handle this special case here? */
945 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
946 "Found matching existing record for `%s'; only updating expiration date!\n",
949 if ( (crc->rd->expiration_time != rd[c].expiration_time) &&
950 ((crc->rd->flags & GNUNET_NAMESTORE_RF_RELATIVE_EXPIRATION)
951 == (rd[c].flags & GNUNET_NAMESTORE_RF_RELATIVE_EXPIRATION) ) )
957 if ( (-1 != exist) &&
958 (GNUNET_NO == update) )
960 /* Exact same record already exists */
961 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
962 "Matching record for %s' exists, no change required!\n",
964 crc->res = GNUNET_NO; /* identical record existed */
969 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
970 "No existing record for name `%s'!\n",
972 rd_count_new = rd_count + 1;
973 rd_new = GNUNET_malloc (rd_count_new * sizeof (struct GNUNET_NAMESTORE_RecordData));
974 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
975 rd_new[rd_count] = *(crc->rd);
979 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
980 "Updating existing records for `%s'!\n",
982 rd_count_new = rd_count;
983 rd_new = GNUNET_malloc (rd_count_new * sizeof (struct GNUNET_NAMESTORE_RecordData));
984 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
985 rd_new[exist] = *(crc->rd);
987 block_expiration = GNUNET_TIME_absolute_max (crc->expire, expire);
989 GSN_database->put_records (GSN_database->cls,
993 rd_count_new, rd_new,
995 crc->res = GNUNET_SYSERR; /* error */
996 else if (GNUNET_YES == update)
997 crc->res = GNUNET_NO; /* update */
999 crc->res = GNUNET_YES; /* created new record */
1000 GNUNET_free (rd_new);
1005 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE' message
1008 * @param client GNUNET_SERVER_Client sending the message
1009 * @param message message of type 'struct RecordCreateMessage'
1012 handle_record_create (void *cls,
1013 struct GNUNET_SERVER_Client *client,
1014 const struct GNUNET_MessageHeader *message)
1016 struct GNUNET_NAMESTORE_Client *nc;
1017 const struct RecordCreateMessage *rp_msg;
1018 struct GNUNET_NAMESTORE_CryptoContainer *cc;
1019 struct CreateRecordContext crc;
1020 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
1021 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
1022 struct RecordCreateResponseMessage rcr_msg;
1023 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
1024 struct GNUNET_HashCode long_hash;
1027 size_t msg_size_exp;
1031 const char *pkey_tmp;
1032 const char *name_tmp;
1034 unsigned int rd_count;
1036 struct GNUNET_NAMESTORE_RecordData rd;
1038 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1039 "Received `%s' message\n", "NAMESTORE_RECORD_CREATE");
1040 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
1043 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1046 if (NULL == (nc = client_lookup (client)))
1049 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1052 rp_msg = (const struct RecordCreateMessage *) message;
1053 rid = ntohl (rp_msg->gns_header.r_id);
1054 name_len = ntohs (rp_msg->name_len);
1055 msg_size = ntohs (message->size);
1056 rd_count = ntohs (rp_msg->rd_count);
1057 rd_ser_len = ntohs (rp_msg->rd_len);
1058 key_len = ntohs (rp_msg->pkey_len);
1059 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
1060 if ( (msg_size != msg_size_exp) || (1 != rd_count) )
1063 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1066 if ((0 == name_len) || (name_len > MAX_NAME_LEN))
1069 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1072 pkey_tmp = (const char *) &rp_msg[1];
1073 name_tmp = &pkey_tmp[key_len];
1074 rd_ser = &name_tmp[name_len];
1075 if (name_tmp[name_len -1] != '\0')
1078 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1081 if (NULL == (pkey = GNUNET_CRYPTO_rsa_decode_key (pkey_tmp, key_len)))
1084 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1088 GNUNET_NAMESTORE_records_deserialize (rd_ser_len, rd_ser, rd_count, &rd))
1091 GNUNET_CRYPTO_rsa_key_free (pkey);
1092 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1096 /* Extracting and converting private key */
1097 GNUNET_CRYPTO_rsa_key_get_public (pkey, &pub);
1098 GNUNET_CRYPTO_short_hash (&pub,
1099 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1101 GNUNET_CRYPTO_short_hash_double (&pubkey_hash, &long_hash);
1103 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
1105 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1106 "Received new private key for zone `%s'\n",
1107 GNUNET_short_h2s(&pubkey_hash));
1108 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1111 cc->zone = pubkey_hash;
1112 GNUNET_assert (GNUNET_YES ==
1113 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, cc,
1114 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
1117 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1118 "Creating record for name `%s' in zone `%s'\n",
1119 name_tmp, GNUNET_short_h2s(&pubkey_hash));
1120 crc.expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
1121 crc.res = GNUNET_SYSERR;
1124 crc.name = name_tmp;
1126 /* Get existing records for name */
1127 res = GSN_database->iterate_records (GSN_database->cls, &pubkey_hash, name_tmp, 0,
1128 &handle_create_record_it, &crc);
1129 if (res != GNUNET_SYSERR)
1132 GNUNET_CRYPTO_rsa_key_free (pkey);
1135 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1136 "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
1137 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
1138 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
1139 rcr_msg.gns_header.r_id = htonl (rid);
1140 if ((GNUNET_OK == res) && (crc.res == GNUNET_YES))
1141 rcr_msg.op_result = htonl (GNUNET_YES);
1142 else if ((GNUNET_OK == res) && (crc.res == GNUNET_NO))
1143 rcr_msg.op_result = htonl (GNUNET_NO);
1145 rcr_msg.op_result = htonl (GNUNET_SYSERR);
1146 GNUNET_SERVER_notification_context_unicast (snc, nc->client,
1147 &rcr_msg.gns_header.header,
1149 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1154 * Context for record remove operations passed from 'handle_record_remove' to
1155 * 'handle_record_remove_it' as closure
1157 struct RemoveRecordContext
1162 const struct GNUNET_NAMESTORE_RecordData *rd;
1165 * See RECORD_REMOVE_RESULT_*-codes. Set by 'handle_record_remove_it'
1166 * to the result of the operation.
1173 * We are to remove a record (or all records for a given name). This function
1174 * will be called with the existing records (if there are any) and is to then
1175 * compute what to keep and trigger the necessary changes.
1177 * @param cls the 'struct RecordRemoveContext' with information about what to remove
1178 * @param zone_key public key of the zone
1179 * @param expire when does the corresponding block in the DHT expire (until
1180 * when should we never do a DHT lookup for the same name again)?
1181 * @param name name that is being mapped (at most 255 characters long)
1182 * @param rd_count number of entries in 'rd' array
1183 * @param rd array of records with data to store
1184 * @param signature signature of the record block, NULL if signature is unavailable (i.e.
1185 * because the user queried for a particular record type only)
1188 handle_record_remove_it (void *cls,
1189 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1190 struct GNUNET_TIME_Absolute expire,
1192 unsigned int rd_count,
1193 const struct GNUNET_NAMESTORE_RecordData *rd,
1194 const struct GNUNET_CRYPTO_RsaSignature *signature)
1196 static struct GNUNET_CRYPTO_RsaSignature dummy_signature;
1197 struct RemoveRecordContext *rrc = cls;
1200 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
1202 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1203 "Name `%s 'currently has %u records\n",
1207 /* Could not find record to remove */
1208 rrc->op_res = RECORD_REMOVE_RESULT_NO_RECORDS;
1212 /* Find record to remove */
1214 for (c = 0; c < rd_count; c++)
1216 /* FIXME: shouldn't we test for all fields to match? Otherwise
1217 we might remove the wrong record, just because the type matches! */
1219 if (rd[c].flags != rrc->rd->flags)
1221 if (rd[c].record_type != rrc->rd->record_type)
1224 if (rd[c].data_size != rrc->rd->data_size)
1227 if (0 != memcmp (rd[c].data, rrc->rd->data, rrc->rd->data_size))
1230 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found record to remove!\n", rd_count);
1236 /* Could not find record to remove */
1237 rrc->op_res = RECORD_REMOVE_RESULT_RECORD_NOT_FOUND;
1242 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1243 "No records left for name `%s', removing name\n",
1245 GNUNET_CRYPTO_short_hash (zone_key,
1246 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1249 GSN_database->remove_records (GSN_database->cls,
1253 /* Could not remove records from database */
1254 rrc->op_res = RECORD_REMOVE_RESULT_FAILED_TO_REMOVE;
1257 rrc->op_res = RECORD_REMOVE_RESULT_SUCCESS;
1262 struct GNUNET_NAMESTORE_RecordData rd_new[rd_count - 1];
1263 unsigned int c2 = 0;
1265 for (c = 0; c < rd_count; c++)
1269 rd_new[c2++] = rd[c];
1272 GSN_database->put_records(GSN_database->cls,
1276 rd_count - 1, rd_new,
1279 /* Could not put records into database */
1280 rrc->op_res = RECORD_REMOVE_RESULT_FAILED_TO_PUT_UPDATE;
1284 rrc->op_res = RECORD_REMOVE_RESULT_SUCCESS;
1289 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE' message
1292 * @param client GNUNET_SERVER_Client sending the message
1293 * @param message message of type 'struct RecordRemoveMessage'
1296 handle_record_remove (void *cls,
1297 struct GNUNET_SERVER_Client *client,
1298 const struct GNUNET_MessageHeader *message)
1300 struct GNUNET_NAMESTORE_Client *nc;
1301 const struct RecordRemoveMessage *rr_msg;
1302 struct RecordRemoveResponseMessage rrr_msg;
1303 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
1304 struct GNUNET_NAMESTORE_CryptoContainer *cc;
1305 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
1306 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
1307 struct GNUNET_HashCode long_hash;
1308 struct GNUNET_NAMESTORE_RecordData rd;
1309 const char *pkey_tmp;
1310 const char *name_tmp;
1316 size_t msg_size_exp;
1319 struct RemoveRecordContext rrc;
1322 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1323 "Received `%s' message\n",
1324 "NAMESTORE_RECORD_REMOVE");
1325 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
1328 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1331 if (NULL == (nc = client_lookup(client)))
1334 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1337 rr_msg = (const struct RecordRemoveMessage *) message;
1338 rid = ntohl (rr_msg->gns_header.r_id);
1339 name_len = ntohs (rr_msg->name_len);
1340 rd_ser_len = ntohs (rr_msg->rd_len);
1341 rd_count = ntohs (rr_msg->rd_count);
1342 key_len = ntohs (rr_msg->pkey_len);
1343 msg_size = ntohs (message->size);
1344 if ((name_len >= MAX_NAME_LEN) || (0 == name_len) || (1 < rd_count) )
1347 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1350 msg_size_exp = sizeof (struct RecordRemoveMessage) + key_len + name_len + rd_ser_len;
1351 if (msg_size != msg_size_exp)
1354 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1357 pkey_tmp = (const char *) &rr_msg[1];
1358 name_tmp = &pkey_tmp[key_len];
1359 rd_ser = &name_tmp[name_len];
1360 if ('\0' != name_tmp[name_len -1])
1363 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1366 if (NULL == (pkey = GNUNET_CRYPTO_rsa_decode_key (pkey_tmp, key_len)))
1369 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1372 GNUNET_CRYPTO_rsa_key_get_public (pkey, &pub);
1373 GNUNET_CRYPTO_short_hash (&pub,
1374 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1376 GNUNET_CRYPTO_short_hash_double (&pubkey_hash, &long_hash);
1377 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (zonekeys, &long_hash))
1379 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1380 "Received new private key for zone `%s'\n",
1381 GNUNET_short_h2s (&pubkey_hash));
1382 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1385 cc->zone = pubkey_hash;
1386 GNUNET_assert (GNUNET_YES ==
1387 GNUNET_CONTAINER_multihashmap_put (zonekeys,
1389 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
1392 GNUNET_CRYPTO_rsa_key_free (pkey);
1395 GNUNET_NAMESTORE_records_deserialize (rd_ser_len, rd_ser, rd_count, &rd))
1398 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1404 /* remove the whole name and all records */
1405 res = GSN_database->remove_records (GSN_database->cls,
1408 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1409 "Removing name `%s': %s\n",
1410 name_tmp, (GNUNET_OK == res) ? "OK" : "FAIL");
1411 if (GNUNET_OK != res)
1412 /* Could not remove entry from database */
1413 res = RECORD_REMOVE_RESULT_FAILED_TO_PUT_UPDATE;
1415 res = RECORD_REMOVE_RESULT_SUCCESS;
1419 /* remove a single record */
1420 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1421 "Removing record for name `%s' in zone `%s'\n", name_tmp,
1422 GNUNET_short_h2s (&pubkey_hash));
1424 res = GSN_database->iterate_records (GSN_database->cls,
1428 handle_record_remove_it, &rrc);
1435 res = RECORD_REMOVE_RESULT_NO_RECORDS;
1438 res = RECORD_REMOVE_RESULT_FAILED_ACCESS_DATABASE;
1442 res = RECORD_REMOVE_RESULT_FAILED_INTERNAL_ERROR;
1446 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1447 "Sending `%s' message\n",
1448 "RECORD_REMOVE_RESPONSE");
1449 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
1450 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
1451 rrr_msg.gns_header.r_id = htonl (rid);
1452 rrr_msg.op_result = htonl (res);
1453 GNUNET_SERVER_notification_context_unicast (snc, nc->client,
1454 &rrr_msg.gns_header.header,
1456 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1461 * Context for record remove operations passed from 'handle_zone_to_name' to
1462 * 'handle_zone_to_name_it' as closure
1464 struct ZoneToNameCtx
1469 struct GNUNET_NAMESTORE_Client *nc;
1472 * Request id (to be used in the response to the client).
1477 * Set to GNUNET_OK on success, GNUNET_SYSERR on error. Note that
1478 * not finding a name for the zone still counts as a 'success' here,
1479 * as this field is about the success of executing the IPC protocol.
1486 * Zone to name iterator
1488 * @param cls struct ZoneToNameCtx *
1489 * @param zone_key the zone key
1490 * @param expire expiration date
1492 * @param rd_count number of records
1493 * @param rd record data
1494 * @param signature signature
1497 handle_zone_to_name_it (void *cls,
1498 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1499 struct GNUNET_TIME_Absolute expire,
1501 unsigned int rd_count,
1502 const struct GNUNET_NAMESTORE_RecordData *rd,
1503 const struct GNUNET_CRYPTO_RsaSignature *signature)
1505 struct ZoneToNameCtx *ztn_ctx = cls;
1506 struct ZoneToNameResponseMessage *ztnr_msg;
1515 if ((NULL != zone_key) && (NULL != name))
1518 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1519 "Found result: name `%s' has %u records\n",
1522 name_len = strlen (name) + 1;
1526 /* no result found */
1527 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1528 "Found no results\n");
1532 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1533 "Sending `%s' message\n",
1534 "ZONE_TO_NAME_RESPONSE");
1535 rd_ser_len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
1536 msg_size = sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len;
1537 if (NULL != signature)
1538 msg_size += sizeof (struct GNUNET_CRYPTO_RsaSignature);
1539 if (msg_size >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
1542 ztn_ctx->success = GNUNET_SYSERR;
1545 ztnr_msg = GNUNET_malloc (msg_size);
1546 ztnr_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE);
1547 ztnr_msg->gns_header.header.size = htons (msg_size);
1548 ztnr_msg->gns_header.r_id = htonl (ztn_ctx->rid);
1549 ztnr_msg->res = htons (res);
1550 ztnr_msg->rd_len = htons (rd_ser_len);
1551 ztnr_msg->rd_count = htons (rd_count);
1552 ztnr_msg->name_len = htons (name_len);
1553 ztnr_msg->expire = GNUNET_TIME_absolute_hton (expire);
1554 if (NULL != zone_key)
1555 ztnr_msg->zone_key = *zone_key;
1556 name_tmp = (char *) &ztnr_msg[1];
1558 memcpy (name_tmp, name, name_len);
1559 rd_tmp = &name_tmp[name_len];
1560 GNUNET_NAMESTORE_records_serialize (rd_count, rd, rd_ser_len, rd_tmp);
1561 sig_tmp = &rd_tmp[rd_ser_len];
1562 if (NULL != signature)
1563 memcpy (sig_tmp, signature, sizeof (struct GNUNET_CRYPTO_RsaSignature));
1564 ztn_ctx->success = GNUNET_OK;
1565 GNUNET_SERVER_notification_context_unicast (snc, ztn_ctx->nc->client,
1566 &ztnr_msg->gns_header.header,
1568 GNUNET_free (ztnr_msg);
1573 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME' message
1576 * @param client GNUNET_SERVER_Client sending the message
1577 * @param message message of type 'struct ZoneToNameMessage'
1580 handle_zone_to_name (void *cls,
1581 struct GNUNET_SERVER_Client *client,
1582 const struct GNUNET_MessageHeader *message)
1584 struct GNUNET_NAMESTORE_Client *nc;
1585 const struct ZoneToNameMessage *ztn_msg;
1586 struct ZoneToNameCtx ztn_ctx;
1588 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1589 "Received `%s' message\n",
1591 ztn_msg = (const struct ZoneToNameMessage *) message;
1592 if (NULL == (nc = client_lookup(client)))
1595 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1598 ztn_ctx.rid = ntohl (ztn_msg->gns_header.r_id);
1600 ztn_ctx.success = GNUNET_SYSERR;
1601 if (GNUNET_SYSERR ==
1602 GSN_database->zone_to_name (GSN_database->cls,
1604 &ztn_msg->value_zone,
1605 &handle_zone_to_name_it, &ztn_ctx))
1607 /* internal error, hang up instead of signalling something
1608 that might be wrong */
1610 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1613 GNUNET_SERVER_receive_done (client, ztn_ctx.success);
1617 /////////////////////////////////////////////////////////////
1621 * Copy record, data has to be free'd separetely
1623 * @param src source record
1624 * @param dest destination record
1627 copy_record (const struct GNUNET_NAMESTORE_RecordData *src,
1628 struct GNUNET_NAMESTORE_RecordData *dest)
1630 memcpy (dest, src, sizeof (struct GNUNET_NAMESTORE_RecordData));
1631 dest->data = GNUNET_malloc (src->data_size);
1632 memcpy ((void *) dest->data, src->data, src->data_size);
1637 * Context for record remove operations passed from
1638 * 'find_next_zone_iteration_result' to 'zone_iteraterate_proc' as closure
1640 struct ZoneIterationProcResult
1643 * The zone iteration handle
1645 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1648 * Iteration result: iteration done?
1650 int res_iteration_finished;
1653 * Iteration result: number of records included
1655 int records_included;
1658 * Iteration result: is a valid signature included?
1670 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
1675 struct GNUNET_NAMESTORE_RecordData *rd;
1680 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
1685 struct GNUNET_CRYPTO_RsaSignature signature;
1690 struct GNUNET_TIME_Absolute expire;
1695 * Process results for zone iteration from database
1697 * @param cls struct ZoneIterationProcResult *proc
1698 * @param zone_key the zone key
1699 * @param expire expiration time
1701 * @param rd_count number of records for this name
1702 * @param rd record data
1703 * @param signature block signature
1706 zone_iteraterate_proc (void *cls,
1707 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1708 struct GNUNET_TIME_Absolute expire,
1710 unsigned int rd_count,
1711 const struct GNUNET_NAMESTORE_RecordData *rd,
1712 const struct GNUNET_CRYPTO_RsaSignature *signature)
1714 struct ZoneIterationProcResult *proc = cls;
1715 struct GNUNET_NAMESTORE_RecordData *rd_filtered;
1716 struct GNUNET_CRYPTO_RsaSignature *new_signature;
1717 struct GNUNET_NAMESTORE_CryptoContainer *cc;
1718 struct GNUNET_CRYPTO_ShortHashCode hash;
1719 struct GNUNET_HashCode long_hash;
1720 struct GNUNET_TIME_Absolute e;
1721 unsigned int rd_count_filtered = 0;
1725 proc->res_iteration_finished = GNUNET_NO;
1726 proc->records_included = 0;
1728 if ((zone_key == NULL) && (name == NULL))
1730 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Iteration done\n");
1731 proc->res_iteration_finished = GNUNET_YES;
1735 else if ((zone_key != NULL) && (name != NULL)) /* just a safety check */
1737 rd_filtered = GNUNET_malloc (rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
1738 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received result for zone iteration: `%s'\n", name);
1739 for (c = 0; c < rd_count; c++)
1741 include = GNUNET_YES;
1742 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Record %i has flags: 0x%x must have 0x%x \n",
1743 c, rd[c].flags, proc->zi->must_have_flags);
1744 /* Checking must have flags */
1745 if ((rd[c].flags & proc->zi->must_have_flags) == proc->zi->must_have_flags)
1748 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Record %i has flags: Include \n", c);
1752 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Record %i has flags: Not include \n", c);
1753 include = GNUNET_NO;
1756 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Record %i has flags: 0x%x must not have 0x%x\n",
1757 c, rd[c].flags, proc->zi->must_not_have_flags);
1758 if ((rd[c].flags & proc->zi->must_not_have_flags) != 0)
1760 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Record %i has flags: Not include \n", c);
1761 include = GNUNET_NO;
1766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Record %i has flags: Include \n", c);
1768 if (GNUNET_YES == include)
1770 copy_record (&rd[c], &rd_filtered[rd_count_filtered]);
1771 rd_count_filtered++;
1775 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Included %i of %i records \n", rd_count_filtered, rd_count);
1777 proc->records_included = rd_count_filtered;
1778 if (0 == rd_count_filtered)
1780 GNUNET_free (rd_filtered);
1783 proc->rd = rd_filtered;
1784 proc->name = GNUNET_strdup(name);
1785 memcpy (&proc->zone_key, zone_key, sizeof (proc->zone_key));
1788 proc->has_signature = GNUNET_NO;
1789 GNUNET_CRYPTO_short_hash (zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &hash);
1790 GNUNET_CRYPTO_short_hash_double(&hash, &long_hash);
1791 proc->zone_hash = hash;
1793 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
1795 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &long_hash);
1796 e = get_block_expiration_time(rd_count_filtered, rd_filtered);
1798 new_signature = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd_filtered, rd_count_filtered);
1799 GNUNET_assert (signature != NULL);
1800 proc->signature = (*new_signature);
1801 GNUNET_free (new_signature);
1802 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating signature for `%s' in zone `%s' with %u records and expiration %llu\n",
1803 name, GNUNET_short_h2s(&hash), rd_count_filtered, e.abs_value);
1804 proc->has_signature = GNUNET_YES;
1806 else if (rd_count_filtered == rd_count)
1808 proc->expire = expire;
1809 if (NULL != signature)
1811 proc->signature = (*signature);
1812 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Using provided signature for `%s' in zone `%s' with %u records and expiration %llu\n",
1813 name, GNUNET_short_h2s(&hash), rd_count_filtered, expire.abs_value);
1814 proc->has_signature = GNUNET_YES;
1818 memset (&proc->signature, '\0', sizeof (proc->signature));
1819 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No signature provided for `%s'\n", name);
1831 /////////////////////////////////////////////////////////////
1835 * Find next zone iteration result in database
1837 * @param proc the zone iteration processing to use
1840 find_next_zone_iteration_result (struct ZoneIterationProcResult *proc)
1842 struct GNUNET_CRYPTO_ShortHashCode *zone;
1844 if (GNUNET_YES == proc->zi->has_zone)
1845 zone = &proc->zi->zone;
1850 if (GNUNET_SYSERR ==
1851 GSN_database->iterate_records (GSN_database->cls, zone, NULL,
1853 &zone_iteraterate_proc, proc))
1860 while ((0 == proc->records_included) && (GNUNET_NO == proc->res_iteration_finished));
1865 * Send zone iteration result to client
1867 * @param proc the zone iteration processing result to send
1870 send_zone_iteration_result (struct ZoneIterationProcResult *proc)
1872 struct GNUNET_NAMESTORE_ZoneIteration *zi = proc->zi;
1873 struct ZoneIterationResponseMessage zir_end;
1874 struct ZoneIterationResponseMessage *zir_msg;
1881 if (GNUNET_YES == proc->res_iteration_finished)
1883 if (zi->has_zone == GNUNET_YES)
1884 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1885 "No more results for zone `%s'\n",
1886 GNUNET_short_h2s(&zi->zone));
1888 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1889 "No more results for all zones\n");
1890 memset (&zir_end, 0, sizeof (zir_end));
1891 zir_end.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1892 zir_end.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
1893 zir_end.gns_header.r_id = htonl(zi->request_id);
1894 GNUNET_SERVER_notification_context_unicast (snc,
1896 &zir_end.gns_header.header, GNUNET_NO);
1897 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing zone iterator\n");
1898 GNUNET_CONTAINER_DLL_remove (zi->client->op_head, zi->client->op_tail, zi);
1902 GNUNET_assert (proc->records_included > 0);
1903 if (GNUNET_YES == zi->has_zone)
1904 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1905 "Sending name `%s' for iteration over zone `%s'\n",
1906 proc->name, GNUNET_short_h2s(&zi->zone));
1908 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1909 "Sending name `%s' for iteration over all zones\n",
1911 name_len = strlen (proc->name) + 1;
1912 rd_ser_len = GNUNET_NAMESTORE_records_get_size(proc->records_included, proc->rd);
1913 msg_size = sizeof (struct ZoneIterationResponseMessage) + name_len + rd_ser_len;
1915 zir_msg = GNUNET_malloc(msg_size);
1916 zir_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1917 zir_msg->gns_header.header.size = htons (msg_size);
1918 zir_msg->gns_header.r_id = htonl(zi->request_id);
1919 zir_msg->expire = GNUNET_TIME_absolute_hton(proc->expire);
1920 zir_msg->reserved = htons (0);
1921 zir_msg->name_len = htons (name_len);
1922 zir_msg->rd_count = htons (proc->records_included);
1923 zir_msg->rd_len = htons (rd_ser_len);
1924 zir_msg->signature = proc->signature;
1925 zir_msg->public_key = proc->zone_key;
1926 name_tmp = (char *) &zir_msg[1];
1927 memcpy (name_tmp, proc->name, name_len);
1928 rd_ser = &name_tmp[name_len];
1929 GNUNET_NAMESTORE_records_serialize (proc->records_included, proc->rd, rd_ser_len, rd_ser);
1930 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1931 "Sending `%s' message with size %u\n",
1932 "ZONE_ITERATION_RESPONSE",
1934 GNUNET_SERVER_notification_context_unicast (snc, zi->client->client,
1935 (const struct GNUNET_MessageHeader *) zir_msg,
1937 GNUNET_free (zir_msg);
1942 * Clean up after zone iteration
1943 * @param proc the zone iteration processor
1946 clean_up_zone_iteration_result (struct ZoneIterationProcResult *proc)
1950 GNUNET_free_non_null (proc->name);
1952 for (c = 0; c < proc->records_included; c++)
1953 GNUNET_free ((void *) proc->rd[c].data);
1954 GNUNET_free_non_null (proc->rd);
1956 proc->records_included = 0;
1961 * Perform the next round of the zone iteration.
1963 * @param zi zone iterator to process
1966 run_zone_iteration_round (struct GNUNET_NAMESTORE_ZoneIteration *zi)
1968 struct ZoneIterationProcResult proc;
1970 memset (&proc, 0, sizeof (proc));
1972 find_next_zone_iteration_result (&proc);
1973 if (GNUNET_YES == proc.res_iteration_finished)
1975 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1976 "Zone iteration done\n");
1978 else if (0 != proc.records_included)
1980 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1981 "Zone iteration returns %u records\n",
1982 proc.records_included);
1984 send_zone_iteration_result (&proc);
1985 clean_up_zone_iteration_result (&proc);
1990 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START' message
1993 * @param client GNUNET_SERVER_Client sending the message
1994 * @param message message of type 'struct ZoneIterationStartMessage'
1997 handle_iteration_start (void *cls,
1998 struct GNUNET_SERVER_Client *client,
1999 const struct GNUNET_MessageHeader *message)
2001 static struct GNUNET_CRYPTO_ShortHashCode zeros;
2002 const struct ZoneIterationStartMessage *zis_msg;
2003 struct GNUNET_NAMESTORE_Client *nc;
2004 struct GNUNET_NAMESTORE_ZoneIteration *zi;
2006 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
2007 nc = client_lookup (client);
2010 GNUNET_break_op (0);
2011 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2014 zis_msg = (const struct ZoneIterationStartMessage *) message;
2015 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
2016 zi->request_id = ntohl (zis_msg->gns_header.r_id);
2019 zi->must_have_flags = ntohs (zis_msg->must_have_flags);
2020 zi->must_not_have_flags = ntohs (zis_msg->must_not_have_flags);
2021 if (0 == memcmp (&zeros, &zis_msg->zone, sizeof (zeros)))
2023 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over all zones\n");
2024 zi->zone = zis_msg->zone;
2025 zi->has_zone = GNUNET_NO;
2029 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2030 "Starting to iterate over zone `%s'\n", GNUNET_short_h2s (&zis_msg->zone));
2031 zi->zone = zis_msg->zone;
2032 zi->has_zone = GNUNET_YES;
2034 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
2035 run_zone_iteration_round (zi);
2036 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2041 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP' message
2044 * @param client GNUNET_SERVER_Client sending the message
2045 * @param message message of type 'struct ZoneIterationStopMessage'
2048 handle_iteration_stop (void *cls,
2049 struct GNUNET_SERVER_Client *client,
2050 const struct GNUNET_MessageHeader *message)
2052 struct GNUNET_NAMESTORE_Client *nc;
2053 struct GNUNET_NAMESTORE_ZoneIteration *zi;
2054 const struct ZoneIterationStopMessage *zis_msg;
2057 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2058 "Received `%s' message\n",
2059 "ZONE_ITERATION_STOP");
2060 nc = client_lookup(client);
2064 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2067 zis_msg = (const struct ZoneIterationStopMessage *) message;
2068 rid = ntohl (zis_msg->gns_header.r_id);
2069 for (zi = nc->op_head; NULL != zi; zi = zi->next)
2070 if (zi->request_id == rid)
2075 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2078 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, zi);
2079 if (GNUNET_YES == zi->has_zone)
2080 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2081 "Stopped zone iteration for zone `%s'\n",
2082 GNUNET_short_h2s (&zi->zone));
2084 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2085 "Stopped zone iteration over all zones\n");
2087 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2092 * Handles a 'GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT' message
2095 * @param client GNUNET_SERVER_Client sending the message
2096 * @param message message of type 'struct ZoneIterationNextMessage'
2099 handle_iteration_next (void *cls,
2100 struct GNUNET_SERVER_Client *client,
2101 const struct GNUNET_MessageHeader *message)
2103 struct GNUNET_NAMESTORE_Client *nc;
2104 struct GNUNET_NAMESTORE_ZoneIteration *zi;
2105 const struct ZoneIterationNextMessage *zis_msg;
2108 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
2109 nc = client_lookup(client);
2113 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2116 zis_msg = (const struct ZoneIterationNextMessage *) message;
2117 rid = ntohl (zis_msg->gns_header.r_id);
2118 for (zi = nc->op_head; NULL != zi; zi = zi->next)
2119 if (zi->request_id == rid)
2124 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2127 run_zone_iteration_round (zi);
2128 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2133 * Load zone keys from directory by reading all .zkey files in this directory
2135 * @param cls int * 'counter' to store the number of files found
2136 * @param filename directory to scan
2137 * @return GNUNET_OK to continue
2140 zonekey_file_it (void *cls, const char *filename)
2142 unsigned int *counter = cls;
2143 struct GNUNET_HashCode long_hash;
2144 struct GNUNET_CRYPTO_RsaPrivateKey *privkey;
2145 struct GNUNET_NAMESTORE_CryptoContainer *c;
2146 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pubkey;
2148 if ((NULL == filename) ||
2149 (NULL == strstr(filename, ".zkey")))
2151 privkey = GNUNET_CRYPTO_rsa_key_create_from_file (filename);
2152 if (NULL == privkey)
2154 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2155 _("Could not parse zone key file `%s'\n"),
2159 c = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
2160 c->privkey = privkey;
2161 GNUNET_CRYPTO_rsa_key_get_public (privkey, &pubkey);
2162 GNUNET_CRYPTO_short_hash (&pubkey,
2163 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
2165 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2166 "Found zonefile for zone `%s'\n", GNUNET_short_h2s (&c->zone));
2167 GNUNET_CRYPTO_short_hash_double (&c->zone, &long_hash);
2168 GNUNET_assert (GNUNET_OK ==
2169 GNUNET_CONTAINER_multihashmap_put (zonekeys, &long_hash, c,
2170 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
2177 * Process namestore requests.
2179 * @param cls closure
2180 * @param server the initialized server
2181 * @param cfg configuration to use
2184 run (void *cls, struct GNUNET_SERVER_Handle *server,
2185 const struct GNUNET_CONFIGURATION_Handle *cfg)
2187 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
2188 {&handle_start, NULL,
2189 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
2190 {&handle_lookup_name, NULL,
2191 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
2192 {&handle_record_put, NULL,
2193 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
2194 {&handle_record_create, NULL,
2195 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
2196 {&handle_record_remove, NULL,
2197 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
2198 {&handle_zone_to_name, NULL,
2199 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, sizeof (struct ZoneToNameMessage) },
2200 {&handle_iteration_start, NULL,
2201 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage) },
2202 {&handle_iteration_next, NULL,
2203 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, sizeof (struct ZoneIterationNextMessage) },
2204 {&handle_iteration_stop, NULL,
2205 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, sizeof (struct ZoneIterationStopMessage) },
2209 unsigned int counter;
2211 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
2214 /* Load private keys from disk */
2216 GNUNET_CONFIGURATION_get_value_filename (cfg, "namestore",
2217 "zonefile_directory",
2218 &zonefile_directory))
2220 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2221 _("No directory to load zonefiles specified in configuration\n"));
2222 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
2226 if (GNUNET_NO == GNUNET_DISK_file_test (zonefile_directory))
2228 if (GNUNET_SYSERR == GNUNET_DISK_directory_create (zonefile_directory))
2230 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2231 _("Creating directory `%s' for zone files failed!\n"),
2232 zonefile_directory);
2233 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
2236 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2237 "Created directory `%s' for zone files\n",
2238 zonefile_directory);
2241 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2242 "Scanning directory `%s' for zone files\n", zonefile_directory);
2243 zonekeys = GNUNET_CONTAINER_multihashmap_create (16);
2245 GNUNET_DISK_directory_scan (zonefile_directory, zonekey_file_it, &counter);
2246 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2247 "Found %u zone files\n",
2250 /* Loading database plugin */
2252 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
2254 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
2256 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
2257 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
2258 GNUNET_free (database);
2259 if (NULL == GSN_database)
2261 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2262 "Could not load database backend `%s'\n",
2264 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
2268 /* Configuring server handles */
2269 GNUNET_SERVER_add_handlers (server, handlers);
2270 snc = GNUNET_SERVER_notification_context_create (server, 16);
2271 GNUNET_SERVER_disconnect_notify (server,
2272 &client_disconnect_notification,
2274 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
2280 * The main function for the template service.
2282 * @param argc number of arguments from the command line
2283 * @param argv command line arguments
2284 * @return 0 ok, 1 on error
2287 main (int argc, char *const *argv)
2289 return (GNUNET_OK ==
2290 GNUNET_SERVICE_run (argc, argv, "namestore",
2291 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
2294 /* end of gnunet-service-namestore.c */