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 for (nc = client_head; nc != NULL; nc = next)
107 for (no = nc->op_head; no != NULL; no = tmp)
109 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
114 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
119 GNUNET_SERVER_notification_context_destroy (snc);
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)
143 * Called whenever a client is disconnected. Frees our
144 * resources associated with that client.
147 * @param client identification of the client
150 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
152 struct GNUNET_NAMESTORE_ZoneIteration * no;
153 struct GNUNET_NAMESTORE_Client * nc;
157 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected \n", client);
159 nc = client_lookup (client);
161 if ((NULL == client) || (NULL == nc))
164 for (no = nc->op_head; no != NULL; no = no->next)
166 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
170 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
174 static void handle_start (void *cls,
175 struct GNUNET_SERVER_Client * client,
176 const struct GNUNET_MessageHeader * message)
178 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", client);
180 struct GNUNET_NAMESTORE_Client * nc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Client));
182 GNUNET_SERVER_notification_context_add (snc, client);
183 GNUNET_CONTAINER_DLL_insert(client_head, client_tail, nc);
185 GNUNET_SERVER_receive_done (client, GNUNET_OK);
188 struct LookupNameContext
190 struct GNUNET_NAMESTORE_Client *nc;
192 uint32_t record_type;
199 handle_lookup_name_it (void *cls,
200 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
201 struct GNUNET_TIME_Absolute expire,
203 unsigned int rd_count,
204 const struct GNUNET_NAMESTORE_RecordData *rd,
205 const struct GNUNET_CRYPTO_RsaSignature *signature)
208 struct LookupNameContext *lnc = cls;
209 struct LookupNameResponseMessage *lnr_msg;
211 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key_tmp;
212 struct GNUNET_NAMESTORE_RecordData *rd_selected = NULL;
216 struct GNUNET_CRYPTO_RsaSignature *signature_tmp;
218 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
224 name_len = strlen(name) + 1;
226 int copied_elements = 0;
227 int contains_signature = 0;
230 /* count records to copy */
233 if (lnc->record_type != 0)
235 /* special record type needed */
236 for (c = 0; c < rd_count; c ++)
237 if (rd[c].record_type == lnc->record_type)
238 copied_elements++; /* found matching record */
239 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
241 for (c = 0; c < rd_count; c ++)
243 if (rd[c].record_type == lnc->record_type)
245 /* found matching record */
246 memcpy (&rd_selected[copied_elements], &rd[c], sizeof (struct GNUNET_NAMESTORE_RecordData));
253 copied_elements = rd_count;
254 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
262 expire = GNUNET_TIME_UNIT_ZERO_ABS;
267 rd_ser_len = GNUNET_NAMESTORE_records_get_size(copied_elements, rd_selected);
268 char rd_ser[rd_ser_len];
269 GNUNET_NAMESTORE_records_serialize(copied_elements, rd_selected, rd_ser_len, rd_ser);
272 if ((copied_elements == rd_count) && (signature != NULL))
273 contains_signature = GNUNET_YES;
275 if (rd_selected != rd)
276 GNUNET_free (rd_selected);
278 r_size = sizeof (struct LookupNameResponseMessage) +
279 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
282 contains_signature * sizeof (struct GNUNET_CRYPTO_RsaSignature);
284 lnr_msg = GNUNET_malloc (r_size);
286 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
287 lnr_msg->gns_header.header.size = ntohs (r_size);
288 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
289 lnr_msg->rd_count = htons (rd_count);
290 lnr_msg->rd_len = htons (rd_ser_len);
291 lnr_msg->name_len = htons (name_len);
292 lnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
293 lnr_msg->contains_sig = htons (contains_signature);
295 zone_key_tmp = (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) &lnr_msg[1];
296 name_tmp = (char *) &zone_key_tmp[1];
297 rd_tmp = &name_tmp[name_len];
298 signature_tmp = (struct GNUNET_CRYPTO_RsaSignature *) &rd_tmp[rd_ser_len];
300 if (zone_key != NULL)
301 memcpy (zone_key_tmp, zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
304 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded dummy;
305 memset (&dummy, '0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
306 memcpy (zone_key_tmp, &dummy, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
308 memcpy (name_tmp, name, name_len);
309 memcpy (rd_tmp, rd_ser, rd_ser_len);
311 if (GNUNET_YES == contains_signature)
312 memcpy (signature_tmp, signature, sizeof (struct GNUNET_CRYPTO_RsaSignature));
313 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
315 GNUNET_free (lnr_msg);
318 static void handle_lookup_name (void *cls,
319 struct GNUNET_SERVER_Client * client,
320 const struct GNUNET_MessageHeader * message)
322 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
323 struct LookupNameContext lnc;
324 struct GNUNET_NAMESTORE_Client *nc;
331 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
334 GNUNET_SERVER_receive_done (client, GNUNET_OK);
338 nc = client_lookup(client);
342 GNUNET_SERVER_receive_done (client, GNUNET_OK);
346 struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
347 rid = ntohl (ln_msg->gns_header.r_id);
348 name_len = ntohl (ln_msg->name_len);
349 type = ntohl (ln_msg->record_type);
351 if ((name_len == 0) || (name_len > 256))
354 GNUNET_SERVER_receive_done (client, GNUNET_OK);
358 name = (char *) &ln_msg[1];
359 if (name[name_len -1] != '\0')
362 GNUNET_SERVER_receive_done (client, GNUNET_OK);
366 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up record for name `%s'\n", name);
368 /* do the actual lookup */
369 lnc.request_id = rid;
371 lnc.record_type = type;
372 res = GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, name, 0, &handle_lookup_name_it, &lnc);
374 GNUNET_SERVER_receive_done (client, GNUNET_OK);
377 static void handle_record_put (void *cls,
378 struct GNUNET_SERVER_Client * client,
379 const struct GNUNET_MessageHeader * message)
381 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_PUT");
382 struct GNUNET_NAMESTORE_Client *nc;
383 struct GNUNET_TIME_Absolute expire;
384 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key;
385 struct GNUNET_CRYPTO_RsaSignature *signature;
386 struct RecordPutResponseMessage rpr_msg;
396 int res = GNUNET_SYSERR;
398 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
401 GNUNET_SERVER_receive_done (client, GNUNET_OK);
405 nc = client_lookup (client);
409 GNUNET_SERVER_receive_done (client, GNUNET_OK);
413 struct RecordPutMessage * rp_msg = (struct RecordPutMessage *) message;
415 rid = ntohl (rp_msg->gns_header.r_id);
416 msg_size = ntohs (rp_msg->gns_header.header.size);
417 key_len = sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded);
418 name_len = ntohs (rp_msg->name_len);
419 rd_count = ntohs (rp_msg->rd_count);
420 rd_ser_len = ntohs(rp_msg->rd_len);
421 msg_size_exp = sizeof (struct RecordPutMessage) + key_len + name_len + rd_ser_len;
423 if (msg_size != msg_size_exp)
425 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
427 GNUNET_SERVER_receive_done (client, GNUNET_OK);
432 if ((name_len == 0) || (name_len > 256))
435 GNUNET_SERVER_receive_done (client, GNUNET_OK);
439 zone_key = (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) &rp_msg[1];
440 name = &((char *)zone_key)[key_len];
442 if (name[name_len -1] != '\0')
445 GNUNET_SERVER_receive_done (client, GNUNET_OK);
449 expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
450 signature = (struct GNUNET_CRYPTO_RsaSignature *) &rp_msg->signature;
452 rd_ser = &name[name_len];
453 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
454 GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
456 GNUNET_HashCode zone_hash;
457 GNUNET_CRYPTO_hash (zone_key, key_len, &zone_hash);
458 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "PUT ZONE HASH: `%s'\n", GNUNET_h2s_full(&zone_hash));
461 /* Database operation */
462 res = GSN_database->put_records(GSN_database->cls,
469 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting record for name `%s': %s\n",
470 name, (res == GNUNET_OK) ? "OK" : "FAIL");
474 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_PUT_RESPONSE");
475 rpr_msg.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
476 rpr_msg.op_id = rp_msg->gns_header.r_id;
477 rpr_msg.header.size = htons (sizeof (struct RecordPutResponseMessage));
478 if (GNUNET_OK == res)
479 rpr_msg.op_result = htons (GNUNET_OK);
481 rpr_msg.op_result = htons (GNUNET_NO);
482 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rpr_msg, GNUNET_NO);
484 GNUNET_SERVER_receive_done (client, GNUNET_OK);
487 struct CreateRecordContext
489 struct GNUNET_NAMESTORE_RecordData *rd;
490 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
491 struct GNUNET_TIME_Absolute expire;
493 struct GNUNET_NAMESTORE_Client *nc;
496 struct GNUNET_CRYPTO_RsaSignature *
497 GNUNET_NAMESTORE_create_signature (const struct GNUNET_CRYPTO_RsaPrivateKey *key, struct GNUNET_NAMESTORE_RecordData *rd, unsigned int rd_count)
499 struct GNUNET_CRYPTO_RsaSignature *sig = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaSignature));
500 struct GNUNET_CRYPTO_RsaSignaturePurpose *sig_purpose;
503 rd_ser_len = GNUNET_NAMESTORE_records_get_size(rd_count, rd);
504 char rd_ser[rd_ser_len];
505 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
507 sig_purpose = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) + rd_ser_len);
509 sig_purpose->size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose)+ rd_ser_len);
510 sig_purpose->purpose = htonl (GNUNET_SIGNATURE_PURPOSE_GNS_RECORD_SIGN);
511 memcpy (&sig_purpose[1], rd_ser, rd_ser_len);
513 GNUNET_CRYPTO_rsa_sign (key, sig_purpose, sig);
515 GNUNET_free (rd_ser);
516 GNUNET_free (sig_purpose);
521 handle_create_record_it (void *cls,
522 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
523 struct GNUNET_TIME_Absolute expire,
525 unsigned int rd_count,
526 const struct GNUNET_NAMESTORE_RecordData *rd,
527 const struct GNUNET_CRYPTO_RsaSignature *signature)
529 struct CreateRecordContext * crc = cls;
530 struct GNUNET_CRYPTO_RsaSignature *signature_new;
531 struct RecordCreateResponseMessage rcr_msg;
534 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u existing records for `%s'\n", rd_count, name);
535 struct GNUNET_NAMESTORE_RecordData *rd_new = GNUNET_malloc ((rd_count+1) * sizeof (struct GNUNET_NAMESTORE_RecordData));
536 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
538 rd_new[rd_count] = *(crc->rd);
540 signature_new = GNUNET_NAMESTORE_create_signature (crc->pkey, rd_new, rd_count+1);
542 /* Database operation */
543 res = GSN_database->put_records(GSN_database->cls,
550 GNUNET_free (rd_new);
551 GNUNET_free (signature_new);
553 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Update result for name %u\n", res);
556 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
557 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
558 rcr_msg.gns_header.r_id = htonl (crc->op_id);
559 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
560 if (GNUNET_OK == res)
561 rcr_msg.op_result = htons (GNUNET_OK);
563 rcr_msg.op_result = htons (GNUNET_NO);
564 GNUNET_SERVER_notification_context_unicast (snc, crc->nc->client, (const struct GNUNET_MessageHeader *) &rcr_msg, GNUNET_NO);
568 static void handle_record_create (void *cls,
569 struct GNUNET_SERVER_Client * client,
570 const struct GNUNET_MessageHeader * message)
572 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_CREATE");
573 struct GNUNET_NAMESTORE_Client *nc;
574 struct CreateRecordContext crc;
575 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
576 GNUNET_HashCode pubkey_hash;
589 int res = GNUNET_SYSERR;
591 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
594 GNUNET_SERVER_receive_done (client, GNUNET_OK);
598 nc = client_lookup(client);
602 GNUNET_SERVER_receive_done (client, GNUNET_OK);
606 struct RecordCreateMessage * rp_msg = (struct RecordCreateMessage *) message;
607 rid = ntohl (rp_msg->gns_header.r_id);
608 name_len = ntohs (rp_msg->name_len);
609 msg_size = ntohs (message->size);
610 rd_count = ntohs (rp_msg->rd_count);
611 rd_ser_len = ntohs (rp_msg->rd_len);
612 key_len = ntohs (rp_msg->pkey_len);
613 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
615 if (msg_size != msg_size_exp)
617 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
619 GNUNET_SERVER_receive_done (client, GNUNET_OK);
623 if ((name_len == 0) || (name_len > 256))
626 GNUNET_SERVER_receive_done (client, GNUNET_OK);
630 pkey_tmp = (char *) &rp_msg[1];
631 name_tmp = &pkey_tmp[key_len];
632 rd_ser = &name_tmp[name_len];
634 if (name_tmp[name_len -1] != '\0')
637 GNUNET_SERVER_receive_done (client, GNUNET_OK);
641 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
642 GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
643 GNUNET_assert (rd_count == 1);
645 /* Extracting and converting private key */
646 struct GNUNET_CRYPTO_RsaPrivateKey *pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
647 GNUNET_assert (pkey != NULL);
648 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
649 GNUNET_CRYPTO_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
656 /* Get existing records for name */
657 res = GSN_database->iterate_records(GSN_database->cls, &pubkey_hash, name_tmp, 0, &handle_create_record_it, &crc);
659 GNUNET_SERVER_receive_done (client, GNUNET_OK);
664 static void handle_record_remove (void *cls,
665 struct GNUNET_SERVER_Client * client,
666 const struct GNUNET_MessageHeader * message)
668 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
669 struct GNUNET_NAMESTORE_Client *nc;
670 struct RecordRemoveResponseMessage rrr_msg;
676 int res = GNUNET_SYSERR;
678 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
681 GNUNET_SERVER_receive_done (client, GNUNET_OK);
685 nc = client_lookup(client);
689 GNUNET_SERVER_receive_done (client, GNUNET_OK);
693 struct RecordRemoveMessage * rp_msg = (struct RecordRemoveMessage *) message;
694 rid = ntohl (rp_msg->gns_header.r_id);
695 name_len = ntohs (rp_msg->name_len);
696 msg_size = ntohs (message->size);
697 msg_size_exp = sizeof (struct RecordRemoveMessage) + name_len + sizeof (struct GNUNET_NAMESTORE_RecordData);
699 if (msg_size != msg_size_exp)
701 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
703 GNUNET_SERVER_receive_done (client, GNUNET_OK);
708 if ((name_len == 0) || (name_len > 256))
711 GNUNET_SERVER_receive_done (client, GNUNET_OK);
715 if (name[name_len -1] != '\0')
718 GNUNET_SERVER_receive_done (client, GNUNET_OK);
726 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_REMOVE_RESPONSE");
727 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
728 rrr_msg.gns_header.r_id = rp_msg->gns_header.r_id;
729 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
730 if (GNUNET_OK == res)
731 rrr_msg.op_result = htons (GNUNET_OK);
733 rrr_msg.op_result = htons (GNUNET_NO);
734 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rrr_msg, GNUNET_NO);
736 GNUNET_SERVER_receive_done (client, GNUNET_OK);
739 struct ZoneIterationProcResult
742 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
745 struct GNUNET_CRYPTO_RsaSignature signature;
746 struct GNUNET_TIME_Absolute expire;
756 void zone_iteration_proc (void *cls,
757 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
758 struct GNUNET_TIME_Absolute expire,
760 unsigned int rd_count,
761 const struct GNUNET_NAMESTORE_RecordData *rd,
762 const struct GNUNET_CRYPTO_RsaSignature *signature)
764 struct ZoneIterationProcResult *zipr = cls;
766 if (zone_key != NULL)
768 zipr->zone_key = *zone_key;
769 zipr->have_zone_key = GNUNET_YES;
772 zipr->have_zone_key = GNUNET_NO;
774 zipr->expire = expire;
778 memcpy (zipr->name, name, strlen(name) + 1);
779 zipr->have_name = GNUNET_YES;
782 zipr->have_name = GNUNET_NO;
784 if (signature != NULL)
786 zipr->signature = *signature;
787 zipr->have_signature = GNUNET_YES;
790 zipr->have_signature = GNUNET_NO;
792 if ((rd_count > 0) && (rd != NULL))
794 len = GNUNET_NAMESTORE_records_get_size(rd_count, rd);
795 zipr->rd_ser = GNUNET_malloc (len);
796 GNUNET_NAMESTORE_records_serialize(rd_count, rd, len, zipr->rd_ser);
797 zipr->rd_ser_len = len;
801 static void handle_iteration_start (void *cls,
802 struct GNUNET_SERVER_Client * client,
803 const struct GNUNET_MessageHeader * message)
805 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
807 struct ZoneIterationStartMessage * zis_msg = (struct ZoneIterationStartMessage *) message;
808 struct GNUNET_NAMESTORE_Client *nc;
809 struct GNUNET_NAMESTORE_ZoneIteration *zi;
810 struct ZoneIterationResponseMessage zir_msg;
811 struct ZoneIterationProcResult zipr;
814 nc = client_lookup(client);
818 GNUNET_SERVER_receive_done (client, GNUNET_OK);
822 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
823 zi->request_id = ntohl (zis_msg->gns_header.r_id);
826 zi->zone = zis_msg->zone;
828 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
830 res = GSN_database->iterate_records (GSN_database->cls, &zis_msg->zone, NULL, zi->offset , &zone_iteration_proc, &zipr);
833 /* GNUNET_OK on success */
837 /* GNUNET_SYSERR on error */
840 /* GNUNET_NO if there were no results, */
848 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_ITERATION_RESPONSE");
849 zir_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
850 zir_msg.gns_header.r_id = htonl(zi->request_id);
851 zir_msg.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
854 GNUNET_SERVER_notification_context_unicast (snc, zi->client->client, (const struct GNUNET_MessageHeader *) &zir_msg, GNUNET_NO);
857 GNUNET_SERVER_receive_done (client, GNUNET_OK);
860 static void handle_iteration_stop (void *cls,
861 struct GNUNET_SERVER_Client * client,
862 const struct GNUNET_MessageHeader * message)
864 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_STOP");
866 struct GNUNET_NAMESTORE_Client *nc;
867 struct GNUNET_NAMESTORE_ZoneIteration *zi;
868 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
871 nc = client_lookup(client);
875 GNUNET_SERVER_receive_done (client, GNUNET_OK);
879 rid = ntohl (zis_msg->gns_header.r_id);
880 for (zi = nc->op_head; zi != NULL; zi = zi->next)
882 if (zi->request_id == rid)
888 GNUNET_SERVER_receive_done (client, GNUNET_OK);
892 GNUNET_CONTAINER_DLL_remove(nc->op_head, nc->op_tail, zi);
893 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration for zone `%s'\n", GNUNET_h2s (&zi->zone));
896 GNUNET_SERVER_receive_done (client, GNUNET_OK);
899 static void handle_iteration_next (void *cls,
900 struct GNUNET_SERVER_Client * client,
901 const struct GNUNET_MessageHeader * message)
903 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
905 struct GNUNET_NAMESTORE_Client *nc;
906 struct GNUNET_NAMESTORE_ZoneIteration *zi;
907 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
911 nc = client_lookup(client);
915 GNUNET_SERVER_receive_done (client, GNUNET_OK);
919 rid = ntohl (zis_msg->gns_header.r_id);
920 for (zi = nc->op_head; zi != NULL; zi = zi->next)
922 if (zi->request_id == rid)
928 GNUNET_SERVER_receive_done (client, GNUNET_OK);
933 res = GSN_database->iterate_records (GSN_database->cls, &zi->zone, NULL, zi->offset , &zone_iteration_proc, zi);
939 * Process template requests.
942 * @param server the initialized server
943 * @param cfg configuration to use
946 run (void *cls, struct GNUNET_SERVER_Handle *server,
947 const struct GNUNET_CONFIGURATION_Handle *cfg)
951 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
953 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
954 {&handle_start, NULL,
955 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
956 {&handle_lookup_name, NULL,
957 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
958 {&handle_record_put, NULL,
959 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
960 {&handle_record_create, NULL,
961 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
962 {&handle_record_remove, NULL,
963 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
964 {&handle_iteration_start, NULL,
965 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage)},
966 {&handle_iteration_stop, NULL,
967 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, sizeof (struct ZoneIterationStopMessage)},
968 {&handle_iteration_next, NULL,
969 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, 0},
975 /* Loading database plugin */
977 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
979 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
981 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
982 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
983 if (GSN_database == NULL)
984 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n",
986 GNUNET_free (database);
988 /* Configuring server handles */
989 GNUNET_SERVER_add_handlers (server, handlers);
990 snc = GNUNET_SERVER_notification_context_create (server, 16);
991 GNUNET_SERVER_disconnect_notify (server,
992 &client_disconnect_notification,
995 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
1002 * The main function for the template service.
1004 * @param argc number of arguments from the command line
1005 * @param argv command line arguments
1006 * @return 0 ok, 1 on error
1009 main (int argc, char *const *argv)
1011 return (GNUNET_OK ==
1012 GNUNET_SERVICE_run (argc, argv, "namestore",
1013 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1016 /* end of gnunet-service-namestore.c */