2 This file is part of GNUnet.
3 (C) 2009 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"
37 * A namestore operation.
39 struct GNUNET_NAMESTORE_ZoneIteration
41 struct GNUNET_NAMESTORE_ZoneIteration *next;
42 struct GNUNET_NAMESTORE_ZoneIteration *prev;
44 struct GNUNET_NAMESTORE_Client * client;
57 struct GNUNET_NAMESTORE_Client
59 struct GNUNET_NAMESTORE_Client *next;
60 struct GNUNET_NAMESTORE_Client *prev;
62 struct GNUNET_SERVER_Client * client;
64 struct GNUNET_NAMESTORE_ZoneIteration *op_head;
65 struct GNUNET_NAMESTORE_ZoneIteration *op_tail;
71 * Configuration handle.
73 const struct GNUNET_CONFIGURATION_Handle *GSN_cfg;
75 static struct GNUNET_NAMESTORE_PluginFunctions *GSN_database;
78 * Our notification context.
80 static struct GNUNET_SERVER_NotificationContext *snc;
82 static char *db_lib_name;
84 static struct GNUNET_NAMESTORE_Client *client_head;
85 static struct GNUNET_NAMESTORE_Client *client_tail;
89 * Task run during shutdown.
95 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
97 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopping namestore service\n");
99 struct GNUNET_NAMESTORE_ZoneIteration * no;
100 struct GNUNET_NAMESTORE_ZoneIteration * tmp;
101 struct GNUNET_NAMESTORE_Client * nc;
102 struct GNUNET_NAMESTORE_Client * next;
104 GNUNET_SERVER_notification_context_destroy (snc);
107 for (nc = client_head; nc != NULL; nc = next)
110 for (no = nc->op_head; no != NULL; no = tmp)
113 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
117 GNUNET_SERVER_client_drop(nc->client);
118 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
122 GNUNET_break (NULL == GNUNET_PLUGIN_unload (db_lib_name, GSN_database));
123 GNUNET_free (db_lib_name);
126 static struct GNUNET_NAMESTORE_Client *
127 client_lookup (struct GNUNET_SERVER_Client *client)
129 struct GNUNET_NAMESTORE_Client * nc;
131 GNUNET_assert (NULL != client);
133 for (nc = client_head; nc != NULL; nc = nc->next)
135 if (client == nc->client)
142 * Called whenever a client is disconnected. Frees our
143 * resources associated with that client.
146 * @param client identification of the client
149 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
151 struct GNUNET_NAMESTORE_ZoneIteration * no;
152 struct GNUNET_NAMESTORE_Client * nc;
156 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected \n", client);
158 nc = client_lookup (client);
160 if ((NULL == client) || (NULL == nc))
163 for (no = nc->op_head; no != NULL; no = no->next)
165 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
169 GNUNET_SERVER_client_drop(nc->client);
170 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
176 static void handle_start (void *cls,
177 struct GNUNET_SERVER_Client * client,
178 const struct GNUNET_MessageHeader * message)
180 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", client);
182 struct GNUNET_NAMESTORE_Client * nc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Client));
184 GNUNET_SERVER_notification_context_add (snc, client);
185 GNUNET_CONTAINER_DLL_insert(client_head, client_tail, nc);
186 GNUNET_SERVER_client_keep (client);
187 GNUNET_SERVER_receive_done (client, GNUNET_OK);
190 struct LookupNameContext
192 struct GNUNET_NAMESTORE_Client *nc;
194 uint32_t record_type;
195 GNUNET_HashCode *zone;
199 void drop_iterator (void *cls,
200 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
201 struct GNUNET_TIME_Absolute expire,
204 const struct GNUNET_NAMESTORE_RecordData *rd,
205 const struct GNUNET_CRYPTO_RsaSignature *signature)
207 GNUNET_HashCode zone_hash;
209 if (NULL != zone_key)
211 GNUNET_CRYPTO_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_hash);
212 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleting zone `%s'\n", GNUNET_h2s (&zone_hash));
213 GSN_database->delete_zone (GSN_database->cls, &zone_hash);
217 (*stop) = GNUNET_YES;
223 * Called whenever a client is disconnected. Frees our
224 * resources associated with that client.
227 * @param client identification of the client
228 * @param message the stop message
230 static void handle_stop (void *cls,
231 struct GNUNET_SERVER_Client * client,
232 const struct GNUNET_MessageHeader * message)
234 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
235 struct DisconnectMessage * msg = (struct DisconnectMessage *) message;
236 struct GNUNET_NAMESTORE_ZoneIteration * no;
237 struct GNUNET_NAMESTORE_Client * nc;
240 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected \n", client);
242 nc = client_lookup (client);
249 for (no = nc->op_head; no != NULL; no = no->next)
251 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
255 drop = ntohl(msg->drop);
256 if (GNUNET_YES == drop)
258 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Dropping namestore content\n");
259 int stop = GNUNET_NO;
261 while (stop == GNUNET_NO)
263 GSN_database->iterate_records (GSN_database->cls, NULL, NULL, offset, &drop_iterator, &stop);
268 GNUNET_SERVER_client_drop(nc->client);
269 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
274 handle_lookup_name_it (void *cls,
275 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
276 struct GNUNET_TIME_Absolute expire,
278 unsigned int rd_count,
279 const struct GNUNET_NAMESTORE_RecordData *rd,
280 const struct GNUNET_CRYPTO_RsaSignature *signature)
283 struct LookupNameContext *lnc = cls;
284 struct LookupNameResponseMessage *lnr_msg;
286 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key_tmp;
287 struct GNUNET_NAMESTORE_RecordData *rd_selected = NULL;
291 struct GNUNET_CRYPTO_RsaSignature *signature_tmp;
297 name_len = strlen(name) + 1;
299 int copied_elements = 0;
300 int contains_signature = 0;
303 /* count records to copy */
306 if (lnc->record_type != 0)
308 /* special record type needed */
309 for (c = 0; c < rd_count; c ++)
310 if (rd[c].record_type == lnc->record_type)
311 copied_elements++; /* found matching record */
312 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records with type %u for name `%s' in zone `%s'\n",
313 copied_elements, lnc->record_type, lnc->name, GNUNET_h2s(lnc->zone));
314 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
316 for (c = 0; c < rd_count; c ++)
318 if (rd[c].record_type == lnc->record_type)
320 /* found matching record */
321 memcpy (&rd_selected[copied_elements], &rd[c], sizeof (struct GNUNET_NAMESTORE_RecordData));
328 copied_elements = rd_count;
329 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
337 expire = GNUNET_TIME_UNIT_ZERO_ABS;
340 rd_ser_len = GNUNET_NAMESTORE_records_get_size(copied_elements, rd_selected);
341 char rd_ser[rd_ser_len];
342 GNUNET_NAMESTORE_records_serialize(copied_elements, rd_selected, rd_ser_len, rd_ser);
344 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records for name `%s' in zone `%s'\n",
345 copied_elements, lnc->name, GNUNET_h2s(lnc->zone));
347 if ((copied_elements == rd_count) && (signature != NULL))
348 contains_signature = GNUNET_YES;
350 if (rd_selected != rd)
351 GNUNET_free (rd_selected);
353 r_size = sizeof (struct LookupNameResponseMessage) +
354 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
357 contains_signature * sizeof (struct GNUNET_CRYPTO_RsaSignature);
359 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
361 lnr_msg = GNUNET_malloc (r_size);
363 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
364 lnr_msg->gns_header.header.size = ntohs (r_size);
365 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
366 lnr_msg->rd_count = htons (copied_elements);
367 lnr_msg->rd_len = htons (rd_ser_len);
368 lnr_msg->name_len = htons (name_len);
369 lnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
370 lnr_msg->contains_sig = htons (contains_signature);
372 zone_key_tmp = (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) &lnr_msg[1];
373 name_tmp = (char *) &zone_key_tmp[1];
374 rd_tmp = &name_tmp[name_len];
375 signature_tmp = (struct GNUNET_CRYPTO_RsaSignature *) &rd_tmp[rd_ser_len];
377 if (zone_key != NULL)
378 memcpy (zone_key_tmp, zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
381 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded dummy;
382 memset (&dummy, '0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
383 memcpy (zone_key_tmp, &dummy, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
385 memcpy (name_tmp, name, name_len);
386 memcpy (rd_tmp, rd_ser, rd_ser_len);
388 if (GNUNET_YES == contains_signature)
389 memcpy (signature_tmp, signature, sizeof (struct GNUNET_CRYPTO_RsaSignature));
390 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
392 GNUNET_free (lnr_msg);
395 static void handle_lookup_name (void *cls,
396 struct GNUNET_SERVER_Client * client,
397 const struct GNUNET_MessageHeader * message)
399 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
400 struct LookupNameContext lnc;
401 struct GNUNET_NAMESTORE_Client *nc;
408 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
411 GNUNET_SERVER_receive_done (client, GNUNET_OK);
415 nc = client_lookup(client);
419 GNUNET_SERVER_receive_done (client, GNUNET_OK);
423 struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
424 rid = ntohl (ln_msg->gns_header.r_id);
425 name_len = ntohl (ln_msg->name_len);
426 type = ntohl (ln_msg->record_type);
428 if ((name_len == 0) || (name_len > 256))
431 GNUNET_SERVER_receive_done (client, GNUNET_OK);
435 name = (char *) &ln_msg[1];
436 if (name[name_len -1] != '\0')
439 GNUNET_SERVER_receive_done (client, GNUNET_OK);
444 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up all records for name `%s' in zone `%s'\n", name, GNUNET_h2s(&ln_msg->zone));
446 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up records with type %u for name `%s' in zone `%s'\n", type, name, GNUNET_h2s(&ln_msg->zone));
447 /* do the actual lookup */
448 lnc.request_id = rid;
450 lnc.record_type = type;
452 lnc.zone = &ln_msg->zone;
453 res = GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, name, 0, &handle_lookup_name_it, &lnc);
455 GNUNET_SERVER_receive_done (client, GNUNET_OK);
458 static void handle_record_put (void *cls,
459 struct GNUNET_SERVER_Client * client,
460 const struct GNUNET_MessageHeader * message)
462 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_PUT");
463 struct GNUNET_NAMESTORE_Client *nc;
464 struct GNUNET_TIME_Absolute expire;
465 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key;
466 struct GNUNET_CRYPTO_RsaSignature *signature;
467 struct RecordPutResponseMessage rpr_msg;
477 int res = GNUNET_SYSERR;
479 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
482 GNUNET_SERVER_receive_done (client, GNUNET_OK);
486 nc = client_lookup (client);
490 GNUNET_SERVER_receive_done (client, GNUNET_OK);
494 struct RecordPutMessage * rp_msg = (struct RecordPutMessage *) message;
496 rid = ntohl (rp_msg->gns_header.r_id);
497 msg_size = ntohs (rp_msg->gns_header.header.size);
498 key_len = ntohs (rp_msg->key_len);
499 name_len = ntohs (rp_msg->name_len);
500 rd_count = ntohs (rp_msg->rd_count);
501 rd_ser_len = ntohs(rp_msg->rd_len);
503 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
506 GNUNET_SERVER_receive_done (client, GNUNET_OK);
510 if ((rd_count < 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
513 GNUNET_SERVER_receive_done (client, GNUNET_OK);
517 msg_size_exp = sizeof (struct RecordPutMessage) + key_len + name_len + rd_ser_len;
518 if (msg_size != msg_size_exp)
520 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
522 GNUNET_SERVER_receive_done (client, GNUNET_OK);
525 if ((name_len == 0) || (name_len > 256))
528 GNUNET_SERVER_receive_done (client, GNUNET_OK);
532 zone_key = (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) &rp_msg[1];
533 name = &((char *)zone_key)[key_len];
535 if (name[name_len -1] != '\0')
538 GNUNET_SERVER_receive_done (client, GNUNET_OK);
542 expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
543 signature = (struct GNUNET_CRYPTO_RsaSignature *) &rp_msg->signature;
545 rd_ser = &name[name_len];
546 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
547 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
548 if (res != GNUNET_OK)
555 GNUNET_HashCode zone_hash;
556 GNUNET_CRYPTO_hash (zone_key, key_len, &zone_hash);
558 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting %u record for name `%s' in zone `%s'\n", rd_count, name, GNUNET_h2s(&zone_hash));
560 /* Database operation */
561 res = GSN_database->put_records(GSN_database->cls,
568 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting record for name `%s': %s\n",
569 name, (res == GNUNET_OK) ? "OK" : "FAIL");
573 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_PUT_RESPONSE");
574 rpr_msg.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
575 rpr_msg.op_id = rp_msg->gns_header.r_id;
576 rpr_msg.header.size = htons (sizeof (struct RecordPutResponseMessage));
577 if (GNUNET_OK == res)
578 rpr_msg.op_result = htons (GNUNET_OK);
580 rpr_msg.op_result = htons (GNUNET_NO);
581 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rpr_msg, GNUNET_NO);
583 GNUNET_SERVER_receive_done (client, GNUNET_OK);
586 struct CreateRecordContext
588 struct GNUNET_NAMESTORE_RecordData *rd;
589 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
590 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey;
591 struct GNUNET_TIME_Absolute expire;
598 handle_create_record_it (void *cls,
599 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey,
600 struct GNUNET_TIME_Absolute expire,
602 unsigned int rd_count,
603 const struct GNUNET_NAMESTORE_RecordData *rd,
604 const struct GNUNET_CRYPTO_RsaSignature *signature)
606 struct CreateRecordContext * crc = cls;
607 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
608 struct GNUNET_NAMESTORE_RecordData *rd_new = NULL;
610 int exist = GNUNET_SYSERR;
611 int update = GNUNET_NO;
613 int rd_count_new = 0;
615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u existing records for `%s'\n", rd_count, crc->name);
617 for (c = 0; c < rd_count; c++)
620 if ((crc->rd->record_type == rd[c].record_type) &&
621 (crc->rd->data_size == rd[c].data_size) &&
622 (0 == memcmp (crc->rd->data, rd[c].data, rd[c].data_size)))
624 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found existing records for `%s' to update expiration date!\n", crc->name);
626 if (crc->rd->expiration.abs_value != rd[c].expiration.abs_value)
632 if (exist == GNUNET_SYSERR)
633 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "NO existing records for `%s' to update!\n", crc->name);
635 if (exist == GNUNET_SYSERR)
637 rd_new = GNUNET_malloc ((rd_count+1) * sizeof (struct GNUNET_NAMESTORE_RecordData));
638 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
639 rd_count_new = rd_count + 1;
640 rd_new[rd_count] = *(crc->rd);
641 signature_new = GNUNET_NAMESTORE_create_signature (crc->pkey, crc->name, rd_new, rd_count+1);
643 if (NULL == signature_new)
650 else if (update == GNUNET_NO)
652 /* Exact same record already exists */
653 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No update for %s' record required!\n", crc->name);
657 else if (update == GNUNET_YES)
660 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating existing records for `%s'!\n", crc->name);
661 rd_new = GNUNET_malloc ((rd_count) * sizeof (struct GNUNET_NAMESTORE_RecordData));
662 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
663 rd_count_new = rd_count;
664 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating expiration from %llu to %llu!\n", rd_new[exist].expiration.abs_value, crc->rd->expiration.abs_value);
665 rd_new[exist].expiration = crc->rd->expiration;
666 signature_new = GNUNET_NAMESTORE_create_signature (crc->pkey, crc->name, rd_new, rd_count_new);
667 if (NULL == signature_new)
675 /* Database operation */
676 GNUNET_assert ((rd_new != NULL) && (rd_count_new > 0));
677 res = GSN_database->put_records(GSN_database->cls,
678 (const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) crc->pubkey,
681 rd_count_new, rd_new,
683 GNUNET_break (GNUNET_OK == res);
687 GNUNET_free_non_null (rd_new);
688 GNUNET_free_non_null (signature_new);
692 /* failed to create the record */
693 crc->res = GNUNET_SYSERR;
696 /* database operations OK */
697 if (GNUNET_YES == update)
698 /* we updated an existing record */
699 crc->res = GNUNET_NO;
701 /* we created a new record */
702 crc->res = GNUNET_YES;
705 /* identical entry existed, so we did nothing */
706 crc->res = GNUNET_NO;
712 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Update result for name `%s' %u\n", crc->name, res);
716 static void handle_record_create (void *cls,
717 struct GNUNET_SERVER_Client * client,
718 const struct GNUNET_MessageHeader * message)
720 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_CREATE");
721 struct GNUNET_NAMESTORE_Client *nc;
722 struct CreateRecordContext crc;
723 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
724 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
725 struct RecordCreateResponseMessage rcr_msg;
726 GNUNET_HashCode pubkey_hash;
738 int res = GNUNET_SYSERR;
740 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
743 GNUNET_SERVER_receive_done (client, GNUNET_OK);
747 nc = client_lookup(client);
751 GNUNET_SERVER_receive_done (client, GNUNET_OK);
755 struct RecordCreateMessage * rp_msg = (struct RecordCreateMessage *) message;
756 rid = ntohl (rp_msg->gns_header.r_id);
757 name_len = ntohs (rp_msg->name_len);
758 msg_size = ntohs (message->size);
759 rd_count = ntohs (rp_msg->rd_count);
760 rd_ser_len = ntohs (rp_msg->rd_len);
761 key_len = ntohs (rp_msg->pkey_len);
762 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
764 if (msg_size != msg_size_exp)
766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
768 GNUNET_SERVER_receive_done (client, GNUNET_OK);
772 if ((name_len == 0) || (name_len > 256))
775 GNUNET_SERVER_receive_done (client, GNUNET_OK);
779 pkey_tmp = (char *) &rp_msg[1];
780 name_tmp = &pkey_tmp[key_len];
781 rd_ser = &name_tmp[name_len];
783 if (name_tmp[name_len -1] != '\0')
786 GNUNET_SERVER_receive_done (client, GNUNET_OK);
790 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
791 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
792 if ((res != GNUNET_OK) || (rd_count != 1))
798 /* Extracting and converting private key */
799 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
800 GNUNET_assert (pkey != NULL);
801 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
802 GNUNET_CRYPTO_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
809 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating record for name `%s' in zone `%s'\n", name_tmp, GNUNET_h2s(&pubkey_hash));
811 /* Get existing records for name */
812 res = GSN_database->iterate_records(GSN_database->cls, &pubkey_hash, name_tmp, 0, &handle_create_record_it, &crc);
813 if (res != GNUNET_SYSERR)
815 GNUNET_CRYPTO_rsa_key_free(pkey);
819 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
820 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
821 rcr_msg.gns_header.r_id = htonl (rid);
822 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
823 if ((GNUNET_OK == res) && (crc.res == GNUNET_YES))
824 rcr_msg.op_result = htons (GNUNET_YES);
825 else if ((GNUNET_OK == res) && (crc.res == GNUNET_NO))
826 rcr_msg.op_result = htons (GNUNET_NO);
828 rcr_msg.op_result = htons (GNUNET_SYSERR);
829 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rcr_msg, GNUNET_NO);
831 GNUNET_SERVER_receive_done (client, GNUNET_OK);
835 struct RemoveRecordContext
837 struct GNUNET_NAMESTORE_RecordData *rd;
838 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
843 handle_record_remove_it (void *cls,
844 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
845 struct GNUNET_TIME_Absolute expire,
847 unsigned int rd_count,
848 const struct GNUNET_NAMESTORE_RecordData *rd,
849 const struct GNUNET_CRYPTO_RsaSignature *signature)
851 struct RemoveRecordContext *rrc = cls;
852 unsigned int rd_count_new = rd_count -1;
853 struct GNUNET_NAMESTORE_RecordData rd_new[rd_count_new];
856 int found = GNUNET_NO;
858 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s 'currently has %u records\n", name, rd_count);
862 /* Could not find record to remove */
867 /* Find record to remove */
869 for (c = 0; c < rd_count; c++)
871 if ((rd[c].expiration.abs_value == rrc->rd->expiration.abs_value) &&
872 (rd[c].flags == rrc->rd->flags) &&
873 (rd[c].record_type == rrc->rd->record_type) &&
874 (rd[c].data_size == rrc->rd->data_size) &&
875 (0 == memcmp (rd[c].data, rrc->rd->data, rrc->rd->data_size)))
877 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found record to remove!\n", rd_count);
887 if ((c2 != rd_count_new) || (found == GNUNET_NO))
889 /* Could not find record to remove */
893 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s' now has %u records\n", name, rd_count_new);
895 /* Create new signature */
896 struct GNUNET_CRYPTO_RsaSignature * new_signature;
897 new_signature = GNUNET_NAMESTORE_create_signature (rrc->pkey, name, rd_new, rd_count_new);
899 if (new_signature == NULL)
901 /* Signature failed */
907 res = GSN_database->put_records(GSN_database->cls,
911 rd_count_new, rd_new,
913 GNUNET_free (new_signature);
915 if (GNUNET_OK != res)
917 /* Could put records into database */
925 static void handle_record_remove (void *cls,
926 struct GNUNET_SERVER_Client * client,
927 const struct GNUNET_MessageHeader * message)
929 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
930 struct GNUNET_NAMESTORE_Client *nc;
931 struct RecordRemoveResponseMessage rrr_msg;
932 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
933 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
934 GNUNET_HashCode pubkey_hash;
935 char * pkey_tmp = NULL;
936 char * name_tmp = NULL;
937 char * rd_ser = NULL;
940 size_t rd_ser_len = 0;
942 size_t msg_size_exp = 0;
946 int res = GNUNET_SYSERR;
948 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
951 GNUNET_SERVER_receive_done (client, GNUNET_OK);
955 nc = client_lookup(client);
959 GNUNET_SERVER_receive_done (client, GNUNET_OK);
963 struct RecordRemoveMessage * rr_msg = (struct RecordRemoveMessage *) message;
964 rid = ntohl (rr_msg->gns_header.r_id);
965 name_len = ntohs (rr_msg->name_len);
966 rd_ser_len = ntohs (rr_msg->rd_len);
967 rd_count = ntohs (rr_msg->rd_count);
968 key_len = ntohs (rr_msg->key_len);
969 msg_size = ntohs (message->size);
971 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
974 GNUNET_SERVER_receive_done (client, GNUNET_OK);
978 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
981 GNUNET_SERVER_receive_done (client, GNUNET_OK);
985 msg_size_exp = sizeof (struct RecordRemoveMessage) + key_len + name_len + rd_ser_len;
986 if (msg_size != msg_size_exp)
988 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
990 GNUNET_SERVER_receive_done (client, GNUNET_OK);
994 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
997 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1001 pkey_tmp = (char *) &rr_msg[1];
1002 name_tmp = &pkey_tmp[key_len];
1003 rd_ser = &name_tmp[name_len];
1006 if ((name_len == 0) || (name_len > 256))
1008 GNUNET_break_op (0);
1009 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1013 if (name_tmp[name_len -1] != '\0')
1015 GNUNET_break_op (0);
1016 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1020 /* Extracting and converting private key */
1021 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1022 GNUNET_assert (pkey != NULL);
1023 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
1024 GNUNET_CRYPTO_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
1026 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
1027 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
1028 if ((res != GNUNET_OK) || (rd_count != 1))
1030 GNUNET_break_op (0);
1034 struct RemoveRecordContext rrc;
1038 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s' in zone `%s'\n", name_tmp, GNUNET_h2s(&pubkey_hash));
1040 /* Database operation */
1041 res = GSN_database->iterate_records (GSN_database->cls,
1045 handle_record_remove_it, &rrc);
1047 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s': %s\n",
1048 name_tmp, (rrc.op_res == 0) ? "OK" : "FAIL");
1053 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_REMOVE_RESPONSE");
1054 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
1055 rrr_msg.gns_header.r_id = rr_msg->gns_header.r_id;
1056 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
1057 rrr_msg.op_result = htons (res);
1058 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rrr_msg, GNUNET_NO);
1060 GNUNET_CRYPTO_rsa_key_free (pkey);
1062 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1066 struct ZoneToNameCtx
1068 struct GNUNET_NAMESTORE_Client *nc;
1073 handle_zone_to_name_it (void *cls,
1074 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1075 struct GNUNET_TIME_Absolute expire,
1077 unsigned int rd_count,
1078 const struct GNUNET_NAMESTORE_RecordData *rd,
1079 const struct GNUNET_CRYPTO_RsaSignature *signature)
1081 struct ZoneToNameCtx * ztn_ctx = cls;
1082 struct ZoneToNameResponseMessage *ztnr_msg;
1083 int16_t res = GNUNET_SYSERR;
1084 uint16_t name_len = 0;
1085 uint16_t rd_ser_len = 0 ;
1086 int32_t contains_sig = 0;
1087 size_t msg_size = 0;
1089 char *rd_ser = NULL;
1094 if ((zone_key != NULL) && (name != NULL))
1097 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found results: name is `%s', has %u records\n", name, rd_count);
1099 name_len = strlen (name);
1103 /* no result found */
1104 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found no results\n");
1111 rd_ser_len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
1112 rd_ser = GNUNET_malloc (rd_ser_len);
1113 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1118 if (signature != NULL)
1119 contains_sig = GNUNET_YES;
1121 contains_sig = GNUNET_NO;
1125 msg_size = sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len + contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature);
1126 ztnr_msg = GNUNET_malloc (msg_size);
1128 name_tmp = (char *) &ztnr_msg[1];
1129 rd_tmp = &name_tmp[name_len];
1130 sig_tmp = &rd_tmp[rd_ser_len];
1132 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_TO_NAME_RESPONSE");
1133 ztnr_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE);
1134 ztnr_msg->gns_header.header.size = htons (msg_size);
1135 ztnr_msg->gns_header.r_id = htonl (ztn_ctx->rid);
1136 ztnr_msg->res = htons (res);
1137 ztnr_msg->rd_len = htons (rd_ser_len);
1138 ztnr_msg->rd_count = htons (rd_count);
1139 ztnr_msg->name_len = htons (name_len);
1140 ztnr_msg->contains_sig = htons (contains_sig);
1141 ztnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
1142 if (zone_key != NULL)
1143 ztnr_msg->zone_key = *zone_key;
1145 memset (&ztnr_msg->zone_key, '\0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1147 memcpy (name_tmp, name, name_len);
1149 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name is `%s', has %u records, rd ser len %u msg_size %u\n", name, rd_count, rd_ser_len, msg_size);
1150 memcpy (rd_tmp, rd_ser, rd_ser_len);
1151 memcpy (sig_tmp, signature, contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature));
1153 GNUNET_SERVER_notification_context_unicast (snc, ztn_ctx->nc->client, (const struct GNUNET_MessageHeader *) ztnr_msg, GNUNET_NO);
1154 GNUNET_free (ztnr_msg);
1155 GNUNET_free_non_null (rd_ser);
1159 static void handle_zone_to_name (void *cls,
1160 struct GNUNET_SERVER_Client * client,
1161 const struct GNUNET_MessageHeader * message)
1163 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_TO_NAME");
1164 struct GNUNET_NAMESTORE_Client *nc;
1165 struct ZoneToNameCtx ztn_ctx;
1166 size_t msg_size = 0;
1171 if (ntohs (message->size) != sizeof (struct ZoneToNameMessage))
1173 GNUNET_break_op (0);
1174 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1178 nc = client_lookup(client);
1181 GNUNET_break_op (0);
1182 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1186 struct ZoneToNameMessage *ztn_msg = (struct ZoneToNameMessage *) message;
1188 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1190 GNUNET_break_op (0);
1191 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1195 rid = ntohl (ztn_msg->gns_header.r_id);
1200 char * z_tmp = strdup (GNUNET_h2s (&ztn_msg->zone));
1201 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up name for zone `%s' in zone `%s'\n",
1203 GNUNET_h2s (&ztn_msg->value_zone));
1204 GNUNET_free (z_tmp);
1206 res = GSN_database->zone_to_name (GSN_database->cls, &ztn_msg->zone, &ztn_msg->value_zone, &handle_zone_to_name_it, &ztn_ctx);
1208 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1211 struct ZoneIterationProcResult
1214 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
1217 struct GNUNET_CRYPTO_RsaSignature signature;
1218 struct GNUNET_TIME_Absolute expire;
1228 void zone_iteration_proc (void *cls,
1229 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1230 struct GNUNET_TIME_Absolute expire,
1232 unsigned int rd_count,
1233 const struct GNUNET_NAMESTORE_RecordData *rd,
1234 const struct GNUNET_CRYPTO_RsaSignature *signature)
1236 struct ZoneIterationProcResult *zipr = cls;
1238 if (zone_key != NULL)
1240 zipr->zone_key = *zone_key;
1241 zipr->have_zone_key = GNUNET_YES;
1244 zipr->have_zone_key = GNUNET_NO;
1246 zipr->expire = expire;
1250 memcpy (zipr->name, name, strlen(name) + 1);
1251 zipr->have_name = GNUNET_YES;
1254 zipr->have_name = GNUNET_NO;
1256 if (signature != NULL)
1258 zipr->signature = *signature;
1259 zipr->have_signature = GNUNET_YES;
1262 zipr->have_signature = GNUNET_NO;
1264 if ((rd_count > 0) && (rd != NULL))
1266 len = GNUNET_NAMESTORE_records_get_size(rd_count, rd);
1267 zipr->rd_ser = GNUNET_malloc (len);
1268 GNUNET_NAMESTORE_records_serialize(rd_count, rd, len, zipr->rd_ser);
1269 zipr->rd_ser_len = len;
1273 static void handle_iteration_start (void *cls,
1274 struct GNUNET_SERVER_Client * client,
1275 const struct GNUNET_MessageHeader * message)
1277 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
1279 struct ZoneIterationStartMessage * zis_msg = (struct ZoneIterationStartMessage *) message;
1280 struct GNUNET_NAMESTORE_Client *nc;
1281 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1282 struct ZoneIterationResponseMessage zir_msg;
1283 struct ZoneIterationProcResult zipr;
1286 nc = client_lookup(client);
1289 GNUNET_break_op (0);
1290 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1294 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
1295 zi->request_id = ntohl (zis_msg->gns_header.r_id);
1298 zi->zone = zis_msg->zone;
1300 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
1302 res = GSN_database->iterate_records (GSN_database->cls, &zis_msg->zone, NULL, zi->offset , &zone_iteration_proc, &zipr);
1305 /* GNUNET_OK on success */
1309 /* GNUNET_SYSERR on error */
1312 /* GNUNET_NO if there were no results, */
1320 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_ITERATION_RESPONSE");
1321 zir_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1322 zir_msg.gns_header.r_id = htonl(zi->request_id);
1323 zir_msg.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
1326 GNUNET_SERVER_notification_context_unicast (snc, zi->client->client, (const struct GNUNET_MessageHeader *) &zir_msg, GNUNET_NO);
1329 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1332 static void handle_iteration_stop (void *cls,
1333 struct GNUNET_SERVER_Client * client,
1334 const struct GNUNET_MessageHeader * message)
1336 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_STOP");
1338 struct GNUNET_NAMESTORE_Client *nc;
1339 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1340 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1343 nc = client_lookup(client);
1346 GNUNET_break_op (0);
1347 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1351 rid = ntohl (zis_msg->gns_header.r_id);
1352 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1354 if (zi->request_id == rid)
1359 GNUNET_break_op (0);
1360 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1364 GNUNET_CONTAINER_DLL_remove(nc->op_head, nc->op_tail, zi);
1365 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration for zone `%s'\n", GNUNET_h2s (&zi->zone));
1368 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1371 static void handle_iteration_next (void *cls,
1372 struct GNUNET_SERVER_Client * client,
1373 const struct GNUNET_MessageHeader * message)
1375 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
1377 struct GNUNET_NAMESTORE_Client *nc;
1378 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1379 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1383 nc = client_lookup(client);
1386 GNUNET_break_op (0);
1387 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1391 rid = ntohl (zis_msg->gns_header.r_id);
1392 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1394 if (zi->request_id == rid)
1399 GNUNET_break_op (0);
1400 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1405 res = GSN_database->iterate_records (GSN_database->cls, &zi->zone, NULL, zi->offset , &zone_iteration_proc, zi);
1411 * Process template requests.
1413 * @param cls closure
1414 * @param server the initialized server
1415 * @param cfg configuration to use
1418 run (void *cls, struct GNUNET_SERVER_Handle *server,
1419 const struct GNUNET_CONFIGURATION_Handle *cfg)
1423 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
1425 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1426 {&handle_start, NULL,
1427 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
1428 {&handle_stop, NULL,
1429 GNUNET_MESSAGE_TYPE_NAMESTORE_DISCONNECT, sizeof (struct DisconnectMessage)},
1430 {&handle_lookup_name, NULL,
1431 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
1432 {&handle_record_put, NULL,
1433 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
1434 {&handle_record_create, NULL,
1435 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
1436 {&handle_record_remove, NULL,
1437 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
1438 {&handle_zone_to_name, NULL,
1439 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, 0},
1440 {&handle_iteration_start, NULL,
1441 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage)},
1442 {&handle_iteration_stop, NULL,
1443 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, sizeof (struct ZoneIterationStopMessage)},
1444 {&handle_iteration_next, NULL,
1445 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, 0},
1451 /* Loading database plugin */
1453 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
1455 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
1457 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
1458 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
1459 if (GSN_database == NULL)
1460 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n",
1462 GNUNET_free (database);
1464 /* Configuring server handles */
1465 GNUNET_SERVER_add_handlers (server, handlers);
1466 snc = GNUNET_SERVER_notification_context_create (server, 16);
1467 GNUNET_SERVER_disconnect_notify (server,
1468 &client_disconnect_notification,
1471 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
1478 * The main function for the template service.
1480 * @param argc number of arguments from the command line
1481 * @param argv command line arguments
1482 * @return 0 ok, 1 on error
1485 main (int argc, char *const *argv)
1487 return (GNUNET_OK ==
1488 GNUNET_SERVICE_run (argc, argv, "namestore",
1489 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1492 /* end of gnunet-service-namestore.c */