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;
217 struct GNUNET_CRYPTO_RsaSignature *signature_tmp;
219 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
225 name_len = strlen(name) + 1;
227 int copied_elements = 0;
228 int contains_signature = 0;
231 /* count records to copy */
234 if (lnc->record_type != 0)
236 /* special record type needed */
237 for (c = 0; c < rd_count; c ++)
238 if (rd[c].record_type == lnc->record_type)
239 copied_elements++; /* found matching record */
240 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
242 for (c = 0; c < rd_count; c ++)
244 if (rd[c].record_type == lnc->record_type)
246 /* found matching record */
247 memcpy (&rd_selected[copied_elements], &rd[c], sizeof (struct GNUNET_NAMESTORE_RecordData));
254 copied_elements = rd_count;
255 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
257 rd_ser_len = GNUNET_NAMESTORE_records_serialize(&rd_ser, copied_elements, rd_selected);
266 expire = GNUNET_TIME_UNIT_ZERO_ABS;
269 if ((copied_elements == rd_count) && (signature != NULL))
270 contains_signature = GNUNET_YES;
272 if (rd_selected != rd)
273 GNUNET_free (rd_selected);
275 r_size = sizeof (struct LookupNameResponseMessage) +
276 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
279 contains_signature * sizeof (struct GNUNET_CRYPTO_RsaSignature);
281 lnr_msg = GNUNET_malloc (r_size);
283 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
284 lnr_msg->gns_header.header.size = ntohs (r_size);
285 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
286 lnr_msg->rd_len = htons (rd_ser_len);
287 lnr_msg->name_len = htons (name_len);
288 lnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
289 lnr_msg->contains_sig = htons (contains_signature);
291 zone_key_tmp = (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) &lnr_msg[1];
292 name_tmp = (char *) &zone_key_tmp[1];
293 rd_tmp = &name_tmp[name_len];
294 signature_tmp = (struct GNUNET_CRYPTO_RsaSignature *) &rd_tmp[rd_ser_len];
296 if (zone_key != NULL)
297 memcpy (zone_key_tmp, zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
300 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded dummy;
301 memset (&dummy, '0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
302 memcpy (zone_key_tmp, &dummy, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
304 memcpy (name_tmp, name, name_len);
305 memcpy (rd_tmp, rd_ser, rd_ser_len);
306 GNUNET_free_non_null (rd_ser);
308 if (GNUNET_YES == contains_signature)
309 memcpy (signature_tmp, signature, sizeof (struct GNUNET_CRYPTO_RsaSignature));
310 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
312 GNUNET_free (lnr_msg);
315 static void handle_lookup_name (void *cls,
316 struct GNUNET_SERVER_Client * client,
317 const struct GNUNET_MessageHeader * message)
319 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
320 struct LookupNameContext lnc;
321 struct GNUNET_NAMESTORE_Client *nc;
328 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
331 GNUNET_SERVER_receive_done (client, GNUNET_OK);
335 nc = client_lookup(client);
339 GNUNET_SERVER_receive_done (client, GNUNET_OK);
343 struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
344 rid = ntohl (ln_msg->gns_header.r_id);
345 name_len = ntohl (ln_msg->name_len);
346 type = ntohl (ln_msg->record_type);
348 if ((name_len == 0) || (name_len > 256))
351 GNUNET_SERVER_receive_done (client, GNUNET_OK);
355 name = (char *) &ln_msg[1];
356 if (name[name_len -1] != '\0')
359 GNUNET_SERVER_receive_done (client, GNUNET_OK);
363 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up record for name `%s'\n", name);
365 /* do the actual lookup */
366 lnc.request_id = rid;
368 lnc.record_type = type;
369 res = GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, name, 0, &handle_lookup_name_it, &lnc);
371 GNUNET_SERVER_receive_done (client, GNUNET_OK);
374 static void handle_record_put (void *cls,
375 struct GNUNET_SERVER_Client * client,
376 const struct GNUNET_MessageHeader * message)
378 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_PUT");
379 struct GNUNET_NAMESTORE_Client *nc;
380 struct GNUNET_TIME_Absolute expire;
381 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key;
382 struct GNUNET_NAMESTORE_RecordData *rd;
383 struct GNUNET_CRYPTO_RsaSignature *signature;
384 struct RecordPutResponseMessage rpr_msg;
394 int res = GNUNET_SYSERR;
396 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
399 GNUNET_SERVER_receive_done (client, GNUNET_OK);
403 nc = client_lookup (client);
407 GNUNET_SERVER_receive_done (client, GNUNET_OK);
411 struct RecordPutMessage * rp_msg = (struct RecordPutMessage *) message;
413 rid = ntohl (rp_msg->gns_header.r_id);
414 key_len = sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded);
415 name_len = ntohs (rp_msg->name_len);
416 rd_ser_len = ntohs(rp_msg->rd_len);
417 msg_size = ntohs (message->size);
418 msg_size_exp = sizeof (struct RecordPutMessage) + key_len + name_len + rd_ser_len;
420 if (msg_size != msg_size_exp)
422 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
424 GNUNET_SERVER_receive_done (client, GNUNET_OK);
429 if ((name_len == 0) || (name_len > 256))
432 GNUNET_SERVER_receive_done (client, GNUNET_OK);
436 zone_key = (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) &rp_msg[1];
437 name = &((char *)zone_key)[key_len];
439 if (name[name_len -1] != '\0')
442 GNUNET_SERVER_receive_done (client, GNUNET_OK);
446 expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
447 signature = (struct GNUNET_CRYPTO_RsaSignature *) &rp_msg->signature;
448 rd_ser = &name[name_len];
449 rd_count = GNUNET_NAMESTORE_records_deserialize(&rd, rd_ser, rd_ser_len);
451 GNUNET_HashCode zone_hash;
452 GNUNET_CRYPTO_hash (zone_key, key_len, &zone_hash);
453 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "PUT ZONE HASH: `%s'\n", GNUNET_h2s_full(&zone_hash));
456 /* Database operation */
457 res = GSN_database->put_records(GSN_database->cls,
464 GNUNET_NAMESTORE_records_free (rd_count, rd);
466 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting record for name `%s': %s\n",
467 name, (res == GNUNET_OK) ? "OK" : "FAIL");
471 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_PUT_RESPONSE");
472 rpr_msg.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
473 rpr_msg.op_id = rp_msg->gns_header.r_id;
474 rpr_msg.header.size = htons (sizeof (struct RecordPutResponseMessage));
475 if (GNUNET_OK == res)
476 rpr_msg.op_result = htons (GNUNET_OK);
478 rpr_msg.op_result = htons (GNUNET_NO);
479 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rpr_msg, GNUNET_NO);
481 GNUNET_SERVER_receive_done (client, GNUNET_OK);
484 struct CreateRecordContext
486 struct GNUNET_NAMESTORE_RecordData *rd;
487 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
488 struct GNUNET_TIME_Absolute expire;
490 struct GNUNET_NAMESTORE_Client *nc;
493 struct GNUNET_CRYPTO_RsaSignature *
494 GNUNET_NAMESTORE_create_signature (const struct GNUNET_CRYPTO_RsaPrivateKey *key, struct GNUNET_NAMESTORE_RecordData *rd, unsigned int rd_count)
496 struct GNUNET_CRYPTO_RsaSignature *sig = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaSignature));
497 struct GNUNET_CRYPTO_RsaSignaturePurpose *sig_purpose;
501 rd_ser_len = GNUNET_NAMESTORE_records_serialize(&rd_ser, rd_count, rd);
502 sig_purpose = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) + rd_ser_len);
504 sig_purpose->size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose)+ rd_ser_len);
505 sig_purpose->purpose = htonl (GNUNET_SIGNATURE_PURPOSE_GNS_RECORD_SIGN);
506 memcpy (&sig_purpose[1], rd_ser, rd_ser_len);
508 GNUNET_CRYPTO_rsa_sign (key, sig_purpose, sig);
510 GNUNET_free (rd_ser);
511 GNUNET_free (sig_purpose);
516 handle_create_record_it (void *cls,
517 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
518 struct GNUNET_TIME_Absolute expire,
520 unsigned int rd_count,
521 const struct GNUNET_NAMESTORE_RecordData *rd,
522 const struct GNUNET_CRYPTO_RsaSignature *signature)
524 struct CreateRecordContext * crc = cls;
525 struct GNUNET_CRYPTO_RsaSignature *signature_new;
526 struct RecordCreateResponseMessage rcr_msg;
529 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u existing records for `%s'\n", rd_count, name);
530 struct GNUNET_NAMESTORE_RecordData *rd_new = GNUNET_malloc ((rd_count+1) * sizeof (struct GNUNET_NAMESTORE_RecordData));
531 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
533 rd_new[rd_count] = *(crc->rd);
535 signature_new = GNUNET_NAMESTORE_create_signature (crc->pkey, rd_new, rd_count+1);
537 /* Database operation */
538 res = GSN_database->put_records(GSN_database->cls,
545 GNUNET_free (rd_new);
546 GNUNET_free (signature_new);
548 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Update result for name %u\n", res);
551 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
552 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
553 rcr_msg.gns_header.r_id = htonl (crc->op_id);
554 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
555 if (GNUNET_OK == res)
556 rcr_msg.op_result = htons (GNUNET_OK);
558 rcr_msg.op_result = htons (GNUNET_NO);
559 GNUNET_SERVER_notification_context_unicast (snc, crc->nc->client, (const struct GNUNET_MessageHeader *) &rcr_msg, GNUNET_NO);
563 static void handle_record_create (void *cls,
564 struct GNUNET_SERVER_Client * client,
565 const struct GNUNET_MessageHeader * message)
567 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_CREATE");
568 struct GNUNET_NAMESTORE_Client *nc;
569 struct GNUNET_NAMESTORE_RecordData *rd;
570 struct CreateRecordContext crc;
571 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
572 GNUNET_HashCode pubkey_hash;
585 int res = GNUNET_SYSERR;
587 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
590 GNUNET_SERVER_receive_done (client, GNUNET_OK);
594 nc = client_lookup(client);
598 GNUNET_SERVER_receive_done (client, GNUNET_OK);
602 struct RecordCreateMessage * rp_msg = (struct RecordCreateMessage *) message;
603 rid = ntohl (rp_msg->gns_header.r_id);
604 name_len = ntohs (rp_msg->name_len);
605 msg_size = ntohs (message->size);
606 rd_ser_len = ntohs (rp_msg->rd_len);
607 key_len = ntohs (rp_msg->pkey_len);
608 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
610 if (msg_size != msg_size_exp)
612 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
614 GNUNET_SERVER_receive_done (client, GNUNET_OK);
618 if ((name_len == 0) || (name_len > 256))
621 GNUNET_SERVER_receive_done (client, GNUNET_OK);
625 pkey_tmp = (char *) &rp_msg[1];
626 name_tmp = &pkey_tmp[key_len];
627 rd_ser = &name_tmp[name_len];
629 if (name_tmp[name_len -1] != '\0')
632 GNUNET_SERVER_receive_done (client, GNUNET_OK);
636 rd_count = GNUNET_NAMESTORE_records_deserialize(&rd, rd_ser, rd_ser_len);
637 GNUNET_assert (rd_count == 1);
639 /* Extracting and converting private key */
640 struct GNUNET_CRYPTO_RsaPrivateKey *pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
641 GNUNET_assert (pkey != NULL);
642 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
643 GNUNET_CRYPTO_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
650 /* Get existing records for name */
651 res = GSN_database->iterate_records(GSN_database->cls, &pubkey_hash, name_tmp, 0, &handle_create_record_it, &crc);
653 GNUNET_CRYPTO_rsa_key_free(pkey);
654 GNUNET_NAMESTORE_records_free(rd_count, rd);
656 GNUNET_SERVER_receive_done (client, GNUNET_OK);
661 static void handle_record_remove (void *cls,
662 struct GNUNET_SERVER_Client * client,
663 const struct GNUNET_MessageHeader * message)
665 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
666 struct GNUNET_NAMESTORE_Client *nc;
667 struct RecordRemoveResponseMessage rrr_msg;
673 int res = GNUNET_SYSERR;
675 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
678 GNUNET_SERVER_receive_done (client, GNUNET_OK);
682 nc = client_lookup(client);
686 GNUNET_SERVER_receive_done (client, GNUNET_OK);
690 struct RecordRemoveMessage * rp_msg = (struct RecordRemoveMessage *) message;
691 rid = ntohl (rp_msg->gns_header.r_id);
692 name_len = ntohs (rp_msg->name_len);
693 msg_size = ntohs (message->size);
694 msg_size_exp = sizeof (struct RecordRemoveMessage) + name_len + sizeof (struct GNUNET_NAMESTORE_RecordData);
696 if (msg_size != msg_size_exp)
698 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
700 GNUNET_SERVER_receive_done (client, GNUNET_OK);
705 if ((name_len == 0) || (name_len > 256))
708 GNUNET_SERVER_receive_done (client, GNUNET_OK);
712 if (name[name_len -1] != '\0')
715 GNUNET_SERVER_receive_done (client, GNUNET_OK);
723 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_REMOVE_RESPONSE");
724 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
725 rrr_msg.gns_header.r_id = rp_msg->gns_header.r_id;
726 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
727 if (GNUNET_OK == res)
728 rrr_msg.op_result = htons (GNUNET_OK);
730 rrr_msg.op_result = htons (GNUNET_NO);
731 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rrr_msg, GNUNET_NO);
733 GNUNET_SERVER_receive_done (client, GNUNET_OK);
736 struct ZoneIterationProcResult
739 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
742 struct GNUNET_CRYPTO_RsaSignature signature;
743 struct GNUNET_TIME_Absolute expire;
753 void zone_iteration_proc (void *cls,
754 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
755 struct GNUNET_TIME_Absolute expire,
757 unsigned int rd_count,
758 const struct GNUNET_NAMESTORE_RecordData *rd,
759 const struct GNUNET_CRYPTO_RsaSignature *signature)
761 struct ZoneIterationProcResult *zipr = cls;
763 if (zone_key != NULL)
765 zipr->zone_key = *zone_key;
766 zipr->have_zone_key = GNUNET_YES;
769 zipr->have_zone_key = GNUNET_NO;
771 zipr->expire = expire;
775 memcpy (zipr->name, name, strlen(name) + 1);
776 zipr->have_name = GNUNET_YES;
779 zipr->have_name = GNUNET_NO;
781 if (signature != NULL)
783 zipr->signature = *signature;
784 zipr->have_signature = GNUNET_YES;
787 zipr->have_signature = GNUNET_NO;
789 if ((rd_count > 0) && (rd != NULL))
791 len = GNUNET_NAMESTORE_records_serialize (&zipr->rd_ser, rd_count, rd);
792 zipr->rd_ser_len = len;
796 static void handle_iteration_start (void *cls,
797 struct GNUNET_SERVER_Client * client,
798 const struct GNUNET_MessageHeader * message)
800 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
802 struct ZoneIterationStartMessage * zis_msg = (struct ZoneIterationStartMessage *) message;
803 struct GNUNET_NAMESTORE_Client *nc;
804 struct GNUNET_NAMESTORE_ZoneIteration *zi;
805 struct ZoneIterationResponseMessage zir_msg;
806 struct ZoneIterationProcResult zipr;
809 nc = client_lookup(client);
813 GNUNET_SERVER_receive_done (client, GNUNET_OK);
817 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
818 zi->request_id = ntohl (zis_msg->gns_header.r_id);
821 zi->zone = zis_msg->zone;
823 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
825 res = GSN_database->iterate_records (GSN_database->cls, &zis_msg->zone, NULL, zi->offset , &zone_iteration_proc, &zipr);
828 /* GNUNET_OK on success */
832 /* GNUNET_SYSERR on error */
835 /* GNUNET_NO if there were no results, */
843 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_ITERATION_RESPONSE");
844 zir_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
845 zir_msg.gns_header.r_id = htonl(zi->request_id);
846 zir_msg.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
849 GNUNET_SERVER_notification_context_unicast (snc, zi->client->client, (const struct GNUNET_MessageHeader *) &zir_msg, GNUNET_NO);
852 GNUNET_SERVER_receive_done (client, GNUNET_OK);
855 static void handle_iteration_stop (void *cls,
856 struct GNUNET_SERVER_Client * client,
857 const struct GNUNET_MessageHeader * message)
859 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_STOP");
861 struct GNUNET_NAMESTORE_Client *nc;
862 struct GNUNET_NAMESTORE_ZoneIteration *zi;
863 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
866 nc = client_lookup(client);
870 GNUNET_SERVER_receive_done (client, GNUNET_OK);
874 rid = ntohl (zis_msg->gns_header.r_id);
875 for (zi = nc->op_head; zi != NULL; zi = zi->next)
877 if (zi->request_id == rid)
883 GNUNET_SERVER_receive_done (client, GNUNET_OK);
887 GNUNET_CONTAINER_DLL_remove(nc->op_head, nc->op_tail, zi);
888 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration for zone `%s'\n", GNUNET_h2s (&zi->zone));
891 GNUNET_SERVER_receive_done (client, GNUNET_OK);
894 static void handle_iteration_next (void *cls,
895 struct GNUNET_SERVER_Client * client,
896 const struct GNUNET_MessageHeader * message)
898 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
900 struct GNUNET_NAMESTORE_Client *nc;
901 struct GNUNET_NAMESTORE_ZoneIteration *zi;
902 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
906 nc = client_lookup(client);
910 GNUNET_SERVER_receive_done (client, GNUNET_OK);
914 rid = ntohl (zis_msg->gns_header.r_id);
915 for (zi = nc->op_head; zi != NULL; zi = zi->next)
917 if (zi->request_id == rid)
923 GNUNET_SERVER_receive_done (client, GNUNET_OK);
928 res = GSN_database->iterate_records (GSN_database->cls, &zi->zone, NULL, zi->offset , &zone_iteration_proc, zi);
934 * Process template requests.
937 * @param server the initialized server
938 * @param cfg configuration to use
941 run (void *cls, struct GNUNET_SERVER_Handle *server,
942 const struct GNUNET_CONFIGURATION_Handle *cfg)
946 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
948 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
949 {&handle_start, NULL,
950 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
951 {&handle_lookup_name, NULL,
952 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
953 {&handle_record_put, NULL,
954 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
955 {&handle_record_create, NULL,
956 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
957 {&handle_record_remove, NULL,
958 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
959 {&handle_iteration_start, NULL,
960 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage)},
961 {&handle_iteration_stop, NULL,
962 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, sizeof (struct ZoneIterationStopMessage)},
963 {&handle_iteration_next, NULL,
964 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, 0},
970 /* Loading database plugin */
972 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
974 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
976 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
977 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
978 if (GSN_database == NULL)
979 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n",
981 GNUNET_free (database);
983 /* Configuring server handles */
984 GNUNET_SERVER_add_handlers (server, handlers);
985 snc = GNUNET_SERVER_notification_context_create (server, 16);
986 GNUNET_SERVER_disconnect_notify (server,
987 &client_disconnect_notification,
990 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
997 * The main function for the template service.
999 * @param argc number of arguments from the command line
1000 * @param argv command line arguments
1001 * @return 0 ok, 1 on error
1004 main (int argc, char *const *argv)
1006 return (GNUNET_OK ==
1007 GNUNET_SERVICE_run (argc, argv, "namestore",
1008 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1011 /* end of gnunet-service-namestore.c */