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"
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
41 struct GNUNET_NAMESTORE_ZoneIteration *next;
42 struct GNUNET_NAMESTORE_ZoneIteration *prev;
44 struct GNUNET_NAMESTORE_Client * client;
61 struct GNUNET_NAMESTORE_Client
63 struct GNUNET_NAMESTORE_Client *next;
64 struct GNUNET_NAMESTORE_Client *prev;
66 struct GNUNET_SERVER_Client * client;
68 struct GNUNET_NAMESTORE_ZoneIteration *op_head;
69 struct GNUNET_NAMESTORE_ZoneIteration *op_tail;
72 struct GNUNET_NAMESTORE_CryptoContainer
77 struct GNUNET_CRYPTO_RsaPrivateKey *privkey;
78 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey;
83 * Configuration handle.
85 const struct GNUNET_CONFIGURATION_Handle *GSN_cfg;
90 struct GNUNET_NAMESTORE_PluginFunctions *GSN_database;
95 static char *zonefile_directory;
97 static char *db_lib_name;
101 * Our notification context.
103 static struct GNUNET_SERVER_NotificationContext *snc;
105 static struct GNUNET_NAMESTORE_Client *client_head;
106 static struct GNUNET_NAMESTORE_Client *client_tail;
108 struct GNUNET_CONTAINER_MultiHashMap *zonekeys;
112 * Write zonefile to disk
113 * @param file where to write
116 * @return GNUNET_OK on success, GNUNET_SYSERR on fail
119 int write_key_to_file (const char *filename, struct GNUNET_NAMESTORE_CryptoContainer *c)
121 struct GNUNET_CRYPTO_RsaPrivateKey *ret = c->privkey;
122 struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded *enc;
123 struct GNUNET_DISK_FileHandle *fd;
125 if (GNUNET_YES == GNUNET_DISK_file_test (filename))
127 GNUNET_HashCode zone;
128 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pubkey;
129 struct GNUNET_CRYPTO_RsaPrivateKey * privkey;
131 privkey = GNUNET_CRYPTO_rsa_key_create_from_file(filename);
134 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
135 _("File zone `%s' but corrupt content already exists, failed to write! \n"), GNUNET_h2s (&zone));
136 return GNUNET_SYSERR;
139 GNUNET_CRYPTO_rsa_key_get_public(privkey, &pubkey);
140 GNUNET_CRYPTO_hash(&pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone);
141 GNUNET_CRYPTO_rsa_key_free(privkey);
143 if (0 == memcmp (&zone, &c->zone, sizeof(zone)))
145 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
146 _("File zone `%s' containing this key already exists\n"), GNUNET_h2s (&zone));
151 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
152 _("File zone `%s' but different zone key already exists, failed to write! \n"), GNUNET_h2s (&zone));
156 fd = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE | GNUNET_DISK_OPEN_FAILIFEXISTS, GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
161 if (GNUNET_YES != GNUNET_DISK_file_test (filename))
163 /* must exist but not be accessible, fail for good! */
164 if (0 != ACCESS (filename, R_OK))
165 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "access", filename);
167 GNUNET_break (0); /* what is going on!? */
168 return GNUNET_SYSERR;
171 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "open", filename);
172 return GNUNET_SYSERR;
175 if (GNUNET_YES != GNUNET_DISK_file_lock (fd, 0, sizeof (struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded), GNUNET_YES))
176 return GNUNET_SYSERR;
177 enc = GNUNET_CRYPTO_rsa_encode_key (ret);
178 GNUNET_assert (enc != NULL);
179 GNUNET_assert (ntohs (enc->len) == GNUNET_DISK_file_write (fd, enc, ntohs (enc->len)));
181 GNUNET_DISK_file_sync (fd);
182 if (GNUNET_YES != GNUNET_DISK_file_unlock (fd, 0, sizeof (struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded)))
183 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "fcntl", filename);
184 GNUNET_assert (GNUNET_YES == GNUNET_DISK_file_close (fd));
186 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
187 _("Stored zonekey for zone `%s' in file `%s'\n"),GNUNET_h2s(&c->zone), c->filename);
191 int zone_to_disk_it (void *cls,
192 const GNUNET_HashCode * key,
195 struct GNUNET_NAMESTORE_CryptoContainer * c = value;
197 if (c->filename != NULL)
198 write_key_to_file(c->filename, c);
201 GNUNET_asprintf(&c->filename, "%s/%s.zone", zonefile_directory, GNUNET_h2s_full (&c->zone));
202 write_key_to_file(c->filename, c);
205 GNUNET_CONTAINER_multihashmap_remove (zonekeys, key, value);;
206 GNUNET_CRYPTO_rsa_key_free(c->privkey);
207 GNUNET_free (c->pubkey);
208 GNUNET_free(c->filename);
216 * Task run during shutdown.
222 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
224 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopping namestore service\n");
225 struct GNUNET_NAMESTORE_ZoneIteration * no;
226 struct GNUNET_NAMESTORE_ZoneIteration * tmp;
227 struct GNUNET_NAMESTORE_Client * nc;
228 struct GNUNET_NAMESTORE_Client * next;
230 GNUNET_SERVER_notification_context_destroy (snc);
233 GNUNET_CONTAINER_multihashmap_iterate(zonekeys, &zone_to_disk_it, NULL);
235 for (nc = client_head; nc != NULL; nc = next)
238 for (no = nc->op_head; no != NULL; no = tmp)
240 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
244 GNUNET_SERVER_client_drop(nc->client);
245 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
249 GNUNET_break (NULL == GNUNET_PLUGIN_unload (db_lib_name, GSN_database));
250 GNUNET_free (db_lib_name);
251 GNUNET_free_non_null(zonefile_directory);
254 static struct GNUNET_NAMESTORE_Client *
255 client_lookup (struct GNUNET_SERVER_Client *client)
257 struct GNUNET_NAMESTORE_Client * nc;
259 GNUNET_assert (NULL != client);
261 for (nc = client_head; nc != NULL; nc = nc->next)
263 if (client == nc->client)
270 * Called whenever a client is disconnected. Frees our
271 * resources associated with that client.
274 * @param client identification of the client
277 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
279 struct GNUNET_NAMESTORE_ZoneIteration * no;
280 struct GNUNET_NAMESTORE_Client * nc;
284 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected \n", client);
286 nc = client_lookup (client);
288 if ((NULL == client) || (NULL == nc))
291 for (no = nc->op_head; no != NULL; no = no->next)
293 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
298 GNUNET_SERVER_client_drop(nc->client);
299 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
305 static void handle_start (void *cls,
306 struct GNUNET_SERVER_Client * client,
307 const struct GNUNET_MessageHeader * message)
309 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", client);
311 struct GNUNET_NAMESTORE_Client * nc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Client));
313 GNUNET_SERVER_notification_context_add (snc, client);
314 GNUNET_CONTAINER_DLL_insert(client_head, client_tail, nc);
315 GNUNET_SERVER_client_keep (client);
316 GNUNET_SERVER_receive_done (client, GNUNET_OK);
319 struct LookupNameContext
321 struct GNUNET_NAMESTORE_Client *nc;
323 uint32_t record_type;
324 GNUNET_HashCode *zone;
328 void drop_iterator (void *cls,
329 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
330 struct GNUNET_TIME_Absolute expire,
333 const struct GNUNET_NAMESTORE_RecordData *rd,
334 const struct GNUNET_CRYPTO_RsaSignature *signature)
336 GNUNET_HashCode zone_hash;
338 if (NULL != zone_key)
340 GNUNET_CRYPTO_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_hash);
341 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleting zone `%s'\n", GNUNET_h2s (&zone_hash));
342 GSN_database->delete_zone (GSN_database->cls, &zone_hash);
346 (*stop) = GNUNET_YES;
352 handle_lookup_name_it (void *cls,
353 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
354 struct GNUNET_TIME_Absolute expire,
356 unsigned int rd_count,
357 const struct GNUNET_NAMESTORE_RecordData *rd,
358 const struct GNUNET_CRYPTO_RsaSignature *signature)
361 struct LookupNameContext *lnc = cls;
362 struct LookupNameResponseMessage *lnr_msg;
363 struct GNUNET_NAMESTORE_RecordData *rd_selected = NULL;
364 struct GNUNET_NAMESTORE_CryptoContainer *cc;
365 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
366 GNUNET_HashCode zone_key_hash;
373 int copied_elements = 0;
374 int contains_signature = GNUNET_NO;
375 int authoritative = GNUNET_NO;
379 name_len = strlen(name) + 1;
381 /* count records to copy */
384 if (lnc->record_type != 0)
386 /* special record type needed */
387 for (c = 0; c < rd_count; c ++)
388 if (rd[c].record_type == lnc->record_type)
389 copied_elements++; /* found matching record */
390 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records with type %u for name `%s' in zone `%s'\n",
391 copied_elements, lnc->record_type, lnc->name, GNUNET_h2s(lnc->zone));
392 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
394 for (c = 0; c < rd_count; c ++)
396 if (rd[c].record_type == lnc->record_type)
398 /* found matching record */
399 memcpy (&rd_selected[copied_elements], &rd[c], sizeof (struct GNUNET_NAMESTORE_RecordData));
406 copied_elements = rd_count;
407 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
415 expire = GNUNET_TIME_UNIT_ZERO_ABS;
418 rd_ser_len = GNUNET_NAMESTORE_records_get_size(copied_elements, rd_selected);
419 char rd_ser[rd_ser_len];
420 GNUNET_NAMESTORE_records_serialize(copied_elements, rd_selected, rd_ser_len, rd_ser);
422 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records for name `%s' in zone `%s'\n",
423 copied_elements, lnc->name, GNUNET_h2s(lnc->zone));
425 if ((copied_elements == rd_count) && (NULL != signature))
426 contains_signature = GNUNET_YES;
428 contains_signature = GNUNET_NO;
431 if ((NULL != zone_key) && (copied_elements == rd_count))
433 GNUNET_CRYPTO_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
434 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &zone_key_hash))
436 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &zone_key_hash);
437 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, name, rd_selected, copied_elements);
438 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating signature for name `%s' in zone `%s'\n",name, GNUNET_h2s(&zone_key_hash));
439 authoritative = GNUNET_YES;
442 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "I am not authoritative for name `%s' in zone `%s'\n",name, GNUNET_h2s(&zone_key_hash));
445 if (rd_selected != rd)
446 GNUNET_free (rd_selected);
448 r_size = sizeof (struct LookupNameResponseMessage) +
449 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
453 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
454 lnr_msg = GNUNET_malloc (r_size);
455 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
456 lnr_msg->gns_header.header.size = ntohs (r_size);
457 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
458 lnr_msg->rd_count = htons (copied_elements);
459 lnr_msg->rd_len = htons (rd_ser_len);
460 lnr_msg->name_len = htons (name_len);
461 lnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
463 if (zone_key != NULL)
464 lnr_msg->public_key = (*zone_key);
466 memset(&lnr_msg->public_key, '\0', sizeof (lnr_msg->public_key));
468 if (GNUNET_YES == authoritative)
470 lnr_msg->contains_sig = htons (GNUNET_YES);
471 lnr_msg->signature = *signature_new;
472 GNUNET_free (signature_new);
474 if (GNUNET_YES == contains_signature)
476 lnr_msg->contains_sig = htons (GNUNET_YES);
477 lnr_msg->signature = *signature;
480 memset (&lnr_msg->signature, '\0', sizeof (lnr_msg->signature));
483 name_tmp = (char *) &lnr_msg[1];
484 rd_tmp = &name_tmp[name_len];
486 memcpy (name_tmp, name, name_len);
487 memcpy (rd_tmp, rd_ser, rd_ser_len);
489 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
490 GNUNET_free (lnr_msg);
493 static void handle_lookup_name (void *cls,
494 struct GNUNET_SERVER_Client * client,
495 const struct GNUNET_MessageHeader * message)
497 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
498 struct LookupNameContext lnc;
499 struct GNUNET_NAMESTORE_Client *nc;
505 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
508 GNUNET_SERVER_receive_done (client, GNUNET_OK);
512 nc = client_lookup(client);
516 GNUNET_SERVER_receive_done (client, GNUNET_OK);
520 struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
521 rid = ntohl (ln_msg->gns_header.r_id);
522 name_len = ntohl (ln_msg->name_len);
523 type = ntohl (ln_msg->record_type);
525 if ((name_len == 0) || (name_len > 256))
528 GNUNET_SERVER_receive_done (client, GNUNET_OK);
532 name = (char *) &ln_msg[1];
533 if (name[name_len -1] != '\0')
536 GNUNET_SERVER_receive_done (client, GNUNET_OK);
541 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up all records for name `%s' in zone `%s'\n", name, GNUNET_h2s(&ln_msg->zone));
543 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));
545 /* do the actual lookup */
546 lnc.request_id = rid;
548 lnc.record_type = type;
550 lnc.zone = &ln_msg->zone;
551 GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, name, 0, &handle_lookup_name_it, &lnc);
553 GNUNET_SERVER_receive_done (client, GNUNET_OK);
556 static void handle_record_put (void *cls,
557 struct GNUNET_SERVER_Client * client,
558 const struct GNUNET_MessageHeader * message)
560 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_PUT");
561 struct GNUNET_NAMESTORE_Client *nc;
562 struct GNUNET_TIME_Absolute expire;
563 struct GNUNET_CRYPTO_RsaSignature *signature;
564 struct RecordPutResponseMessage rpr_msg;
573 int res = GNUNET_SYSERR;
575 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
578 GNUNET_SERVER_receive_done (client, GNUNET_OK);
582 nc = client_lookup (client);
586 GNUNET_SERVER_receive_done (client, GNUNET_OK);
590 struct RecordPutMessage * rp_msg = (struct RecordPutMessage *) message;
592 rid = ntohl (rp_msg->gns_header.r_id);
593 msg_size = ntohs (rp_msg->gns_header.header.size);
594 name_len = ntohs (rp_msg->name_len);
595 rd_count = ntohs (rp_msg->rd_count);
596 rd_ser_len = ntohs(rp_msg->rd_len);
598 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
601 GNUNET_SERVER_receive_done (client, GNUNET_OK);
605 if ((rd_count < 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
608 GNUNET_SERVER_receive_done (client, GNUNET_OK);
612 msg_size_exp = sizeof (struct RecordPutMessage) + name_len + rd_ser_len;
613 if (msg_size != msg_size_exp)
615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
617 GNUNET_SERVER_receive_done (client, GNUNET_OK);
620 if ((name_len == 0) || (name_len > 256))
623 GNUNET_SERVER_receive_done (client, GNUNET_OK);
627 name = (char *) &rp_msg[1];
629 if (name[name_len -1] != '\0')
632 GNUNET_SERVER_receive_done (client, GNUNET_OK);
636 expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
637 signature = (struct GNUNET_CRYPTO_RsaSignature *) &rp_msg->signature;
639 rd_ser = &name[name_len];
640 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
641 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
642 if (res != GNUNET_OK)
648 GNUNET_HashCode zone_hash;
649 GNUNET_CRYPTO_hash (&rp_msg->public_key, sizeof (rp_msg->public_key), &zone_hash);
651 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting %u record for name `%s' in zone `%s'\n", rd_count, name, GNUNET_h2s(&zone_hash));
653 /* Database operation */
654 res = GSN_database->put_records(GSN_database->cls,
661 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting record for name `%s': %s\n",
662 name, (res == GNUNET_OK) ? "OK" : "FAIL");
666 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_PUT_RESPONSE");
667 rpr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
668 rpr_msg.gns_header.header.size = htons (sizeof (struct RecordPutResponseMessage));
669 rpr_msg.gns_header.r_id = htonl (rid);
670 rpr_msg.op_result = htonl (res);
671 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rpr_msg, GNUNET_NO);
673 GNUNET_SERVER_receive_done (client, GNUNET_OK);
676 struct CreateRecordContext
678 struct GNUNET_NAMESTORE_RecordData *rd;
679 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
680 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey;
681 struct GNUNET_TIME_Absolute expire;
688 handle_create_record_it (void *cls,
689 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey,
690 struct GNUNET_TIME_Absolute expire,
692 unsigned int rd_count,
693 const struct GNUNET_NAMESTORE_RecordData *rd,
694 const struct GNUNET_CRYPTO_RsaSignature *signature)
696 struct CreateRecordContext * crc = cls;
697 struct GNUNET_NAMESTORE_RecordData *rd_new = NULL;
698 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
699 struct GNUNET_TIME_Absolute block_expiration;
701 int exist = GNUNET_SYSERR;
702 int update = GNUNET_NO;
704 int rd_count_new = 0;
706 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u existing records for `%s'\n", rd_count, crc->name);
708 for (c = 0; c < rd_count; c++)
711 if ((crc->rd->record_type == rd[c].record_type) &&
712 (crc->rd->data_size == rd[c].data_size) &&
713 (0 == memcmp (crc->rd->data, rd[c].data, rd[c].data_size)))
715 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found existing records for `%s' to update expiration date!\n", crc->name);
717 if (crc->rd->expiration.abs_value != rd[c].expiration.abs_value)
723 if (exist == GNUNET_SYSERR)
724 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "NO existing records for `%s' to update!\n", crc->name);
726 if (exist == GNUNET_SYSERR)
728 rd_new = GNUNET_malloc ((rd_count+1) * sizeof (struct GNUNET_NAMESTORE_RecordData));
729 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
730 rd_count_new = rd_count + 1;
731 rd_new[rd_count] = *(crc->rd);
733 else if (update == GNUNET_NO)
735 /* Exact same record already exists */
736 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No update for %s' record required!\n", crc->name);
740 else if (update == GNUNET_YES)
743 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating existing records for `%s'!\n", crc->name);
744 rd_new = GNUNET_malloc ((rd_count) * sizeof (struct GNUNET_NAMESTORE_RecordData));
745 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
746 rd_count_new = rd_count;
747 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating expiration from %llu to %llu!\n", rd_new[exist].expiration.abs_value, crc->rd->expiration.abs_value);
748 rd_new[exist].expiration = crc->rd->expiration;
751 block_expiration = GNUNET_TIME_absolute_max(crc->expire, expire);
752 if (block_expiration.abs_value != expire.abs_value)
753 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updated block expiration time\n");
755 memset (&dummy_signature, '\0', sizeof (dummy_signature));
757 /* Database operation */
758 GNUNET_assert ((rd_new != NULL) && (rd_count_new > 0));
759 res = GSN_database->put_records(GSN_database->cls,
760 (const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) crc->pubkey,
763 rd_count_new, rd_new,
765 GNUNET_break (GNUNET_OK == res);
766 if (res == GNUNET_OK)
767 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully put record for `%s' in database \n", crc->name);
769 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to put record for `%s' in database \n", crc->name);
773 GNUNET_free_non_null (rd_new);
777 /* failed to create the record */
778 crc->res = GNUNET_SYSERR;
781 /* database operations OK */
782 if (GNUNET_YES == update)
783 /* we updated an existing record */
784 crc->res = GNUNET_NO;
786 /* we created a new record */
787 crc->res = GNUNET_YES;
790 /* identical entry existed, so we did nothing */
791 crc->res = GNUNET_NO;
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Update result for name `%s' %u\n", crc->name, res);
801 static void handle_record_create (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", "NAMESTORE_RECORD_CREATE");
806 struct GNUNET_NAMESTORE_Client *nc;
807 struct CreateRecordContext crc;
808 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
809 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
810 struct RecordCreateResponseMessage rcr_msg;
811 GNUNET_HashCode pubkey_hash;
823 int res = GNUNET_SYSERR;
824 crc.res = GNUNET_SYSERR;
826 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
829 GNUNET_SERVER_receive_done (client, GNUNET_OK);
833 nc = client_lookup(client);
837 GNUNET_SERVER_receive_done (client, GNUNET_OK);
841 struct RecordCreateMessage * rp_msg = (struct RecordCreateMessage *) message;
842 rid = ntohl (rp_msg->gns_header.r_id);
843 name_len = ntohs (rp_msg->name_len);
844 msg_size = ntohs (message->size);
845 rd_count = ntohs (rp_msg->rd_count);
846 rd_ser_len = ntohs (rp_msg->rd_len);
847 key_len = ntohs (rp_msg->pkey_len);
848 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
850 if (msg_size != msg_size_exp)
852 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
854 GNUNET_SERVER_receive_done (client, GNUNET_OK);
858 if ((name_len == 0) || (name_len > 256))
861 GNUNET_SERVER_receive_done (client, GNUNET_OK);
865 pkey_tmp = (char *) &rp_msg[1];
866 name_tmp = &pkey_tmp[key_len];
867 rd_ser = &name_tmp[name_len];
869 if (name_tmp[name_len -1] != '\0')
872 GNUNET_SERVER_receive_done (client, GNUNET_OK);
876 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
878 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
879 if ((res != GNUNET_OK) || (rd_count != 1))
885 /* Extracting and converting private key */
886 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
887 GNUNET_assert (pkey != NULL);
888 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
889 GNUNET_CRYPTO_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
891 crc.expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
892 crc.res = GNUNET_SYSERR;
898 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating record for name `%s' in zone `%s'\n", name_tmp, GNUNET_h2s(&pubkey_hash));
900 /* Get existing records for name */
901 res = GSN_database->iterate_records(GSN_database->cls, &pubkey_hash, name_tmp, 0, &handle_create_record_it, &crc);
902 if (res != GNUNET_SYSERR)
904 GNUNET_CRYPTO_rsa_key_free(pkey);
908 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
909 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
910 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
911 rcr_msg.gns_header.r_id = htonl (rid);
912 if ((GNUNET_OK == res) && (crc.res == GNUNET_YES))
913 rcr_msg.op_result = htonl (GNUNET_YES);
914 else if ((GNUNET_OK == res) && (crc.res == GNUNET_NO))
915 rcr_msg.op_result = htonl (GNUNET_NO);
917 rcr_msg.op_result = htonl (GNUNET_SYSERR);
918 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rcr_msg, GNUNET_NO);
920 GNUNET_SERVER_receive_done (client, GNUNET_OK);
924 struct RemoveRecordContext
926 struct GNUNET_NAMESTORE_RecordData *rd;
927 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
932 handle_record_remove_it (void *cls,
933 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
934 struct GNUNET_TIME_Absolute expire,
936 unsigned int rd_count,
937 const struct GNUNET_NAMESTORE_RecordData *rd,
938 const struct GNUNET_CRYPTO_RsaSignature *signature)
940 struct RemoveRecordContext *rrc = cls;
944 unsigned int rd_count_new;
946 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s 'currently has %u records\n", name, rd_count);
950 /* Could not find record to remove */
955 /* Find record to remove */
956 found = GNUNET_SYSERR;
957 for (c = 0; c < rd_count; c++)
959 if ((rd[c].expiration.abs_value == rrc->rd->expiration.abs_value) &&
960 (rd[c].flags == rrc->rd->flags) &&
961 (rd[c].record_type == rrc->rd->record_type) &&
962 (rd[c].data_size == rrc->rd->data_size) &&
963 (0 == memcmp (rd[c].data, rrc->rd->data, rrc->rd->data_size)))
965 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found record to remove!\n", rd_count);
970 if (GNUNET_SYSERR == found)
972 /* Could not find record to remove */
977 rd_count_new = rd_count -1;
978 struct GNUNET_NAMESTORE_RecordData rd_new[rd_count_new];
981 for (c = 0; c < rd_count; c++)
985 GNUNET_assert (c2 < rd_count_new);
991 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s' now has %u records\n", name, rd_count_new);
993 /* Create dummy signature */
994 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
995 memset (&dummy_signature, '\0', sizeof (dummy_signature));
999 res = GSN_database->put_records(GSN_database->cls,
1003 rd_count_new, rd_new,
1005 if (GNUNET_OK != res)
1007 /* Could put records into database */
1015 static void handle_record_remove (void *cls,
1016 struct GNUNET_SERVER_Client * client,
1017 const struct GNUNET_MessageHeader * message)
1019 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
1020 struct GNUNET_NAMESTORE_Client *nc;
1021 struct RecordRemoveResponseMessage rrr_msg;
1022 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
1023 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
1024 GNUNET_HashCode pubkey_hash;
1025 char * pkey_tmp = NULL;
1026 char * name_tmp = NULL;
1027 char * rd_ser = NULL;
1029 size_t name_len = 0;
1030 size_t rd_ser_len = 0;
1031 size_t msg_size = 0;
1032 size_t msg_size_exp = 0;
1036 int res = GNUNET_SYSERR;
1038 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
1040 GNUNET_break_op (0);
1041 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1045 nc = client_lookup(client);
1048 GNUNET_break_op (0);
1049 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1053 struct RecordRemoveMessage * rr_msg = (struct RecordRemoveMessage *) message;
1054 rid = ntohl (rr_msg->gns_header.r_id);
1055 name_len = ntohs (rr_msg->name_len);
1056 rd_ser_len = ntohs (rr_msg->rd_len);
1057 rd_count = ntohs (rr_msg->rd_count);
1058 key_len = ntohs (rr_msg->pkey_len);
1059 msg_size = ntohs (message->size);
1061 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1063 GNUNET_break_op (0);
1064 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1068 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
1070 GNUNET_break_op (0);
1071 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1075 msg_size_exp = sizeof (struct RecordRemoveMessage) + key_len + name_len + rd_ser_len;
1076 if (msg_size != msg_size_exp)
1078 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
1079 GNUNET_break_op (0);
1080 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1084 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
1086 GNUNET_break_op (0);
1087 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1091 pkey_tmp = (char *) &rr_msg[1];
1092 name_tmp = &pkey_tmp[key_len];
1093 rd_ser = &name_tmp[name_len];
1096 if ((name_len == 0) || (name_len > 256))
1098 GNUNET_break_op (0);
1099 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1103 if (name_tmp[name_len -1] != '\0')
1105 GNUNET_break_op (0);
1106 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1110 /* Extracting and converting private key */
1111 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1112 GNUNET_assert (pkey != NULL);
1113 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
1114 GNUNET_CRYPTO_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
1116 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
1117 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
1118 if ((res != GNUNET_OK) || (rd_count != 1))
1120 GNUNET_break_op (0);
1124 struct RemoveRecordContext rrc;
1128 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s' in zone `%s'\n", name_tmp, GNUNET_h2s(&pubkey_hash));
1130 /* Database operation */
1131 res = GSN_database->iterate_records (GSN_database->cls,
1135 handle_record_remove_it, &rrc);
1137 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s': %s\n",
1138 name_tmp, (rrc.op_res == 0) ? "OK" : "FAIL");
1143 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_REMOVE_RESPONSE");
1144 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
1145 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
1146 rrr_msg.gns_header.r_id = htonl (rid);
1147 rrr_msg.op_result = htonl (res);
1148 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rrr_msg, GNUNET_NO);
1150 GNUNET_CRYPTO_rsa_key_free (pkey);
1152 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1156 struct ZoneToNameCtx
1158 struct GNUNET_NAMESTORE_Client *nc;
1163 handle_zone_to_name_it (void *cls,
1164 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1165 struct GNUNET_TIME_Absolute expire,
1167 unsigned int rd_count,
1168 const struct GNUNET_NAMESTORE_RecordData *rd,
1169 const struct GNUNET_CRYPTO_RsaSignature *signature)
1171 struct ZoneToNameCtx * ztn_ctx = cls;
1172 struct ZoneToNameResponseMessage *ztnr_msg;
1173 int16_t res = GNUNET_SYSERR;
1174 uint16_t name_len = 0;
1175 uint16_t rd_ser_len = 0 ;
1176 int32_t contains_sig = 0;
1177 size_t msg_size = 0;
1179 char *rd_ser = NULL;
1184 if ((zone_key != NULL) && (name != NULL))
1187 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found results: name is `%s', has %u records\n", name, rd_count);
1189 name_len = strlen (name);
1193 /* no result found */
1194 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found no results\n");
1201 rd_ser_len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
1202 rd_ser = GNUNET_malloc (rd_ser_len);
1203 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1208 if (signature != NULL)
1209 contains_sig = GNUNET_YES;
1211 contains_sig = GNUNET_NO;
1215 msg_size = sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len + contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature);
1216 ztnr_msg = GNUNET_malloc (msg_size);
1218 name_tmp = (char *) &ztnr_msg[1];
1219 rd_tmp = &name_tmp[name_len];
1220 sig_tmp = &rd_tmp[rd_ser_len];
1222 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_TO_NAME_RESPONSE");
1223 ztnr_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE);
1224 ztnr_msg->gns_header.header.size = htons (msg_size);
1225 ztnr_msg->gns_header.r_id = htonl (ztn_ctx->rid);
1226 ztnr_msg->res = htons (res);
1227 ztnr_msg->rd_len = htons (rd_ser_len);
1228 ztnr_msg->rd_count = htons (rd_count);
1229 ztnr_msg->name_len = htons (name_len);
1230 ztnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
1231 if (zone_key != NULL)
1232 ztnr_msg->zone_key = *zone_key;
1234 memset (&ztnr_msg->zone_key, '\0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1236 if ((name_len > 0) && (name != NULL))
1237 memcpy (name_tmp, name, name_len);
1239 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);
1240 if ((rd_ser_len > 0) && (rd_ser != NULL))
1241 memcpy (rd_tmp, rd_ser, rd_ser_len);
1242 if ((GNUNET_YES == contains_sig) && (signature != NULL))
1243 memcpy (sig_tmp, signature, contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature));
1245 GNUNET_SERVER_notification_context_unicast (snc, ztn_ctx->nc->client, (const struct GNUNET_MessageHeader *) ztnr_msg, GNUNET_NO);
1246 GNUNET_free (ztnr_msg);
1247 GNUNET_free_non_null (rd_ser);
1251 static void handle_zone_to_name (void *cls,
1252 struct GNUNET_SERVER_Client * client,
1253 const struct GNUNET_MessageHeader * message)
1255 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_TO_NAME");
1256 struct GNUNET_NAMESTORE_Client *nc;
1257 struct ZoneToNameCtx ztn_ctx;
1258 size_t msg_size = 0;
1261 if (ntohs (message->size) != sizeof (struct ZoneToNameMessage))
1263 GNUNET_break_op (0);
1264 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1268 nc = client_lookup(client);
1271 GNUNET_break_op (0);
1272 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1276 struct ZoneToNameMessage *ztn_msg = (struct ZoneToNameMessage *) message;
1278 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1280 GNUNET_break_op (0);
1281 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1285 rid = ntohl (ztn_msg->gns_header.r_id);
1290 char * z_tmp = strdup (GNUNET_h2s (&ztn_msg->zone));
1291 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up name for zone `%s' in zone `%s'\n",
1293 GNUNET_h2s (&ztn_msg->value_zone));
1294 GNUNET_free (z_tmp);
1296 GSN_database->zone_to_name (GSN_database->cls, &ztn_msg->zone, &ztn_msg->value_zone, &handle_zone_to_name_it, &ztn_ctx);
1298 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1301 struct ZoneIterationProcResult
1304 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
1307 struct GNUNET_CRYPTO_RsaSignature signature;
1308 struct GNUNET_TIME_Absolute expire;
1318 void zone_iteration_proc (void *cls,
1319 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1320 struct GNUNET_TIME_Absolute expire,
1322 unsigned int rd_count,
1323 const struct GNUNET_NAMESTORE_RecordData *rd,
1324 const struct GNUNET_CRYPTO_RsaSignature *signature)
1326 struct GNUNET_NAMESTORE_ZoneIteration *zi = cls;
1327 struct GNUNET_NAMESTORE_Client *nc = zi->client;
1330 if ((zone_key == NULL) && (name == NULL))
1332 struct ZoneIterationResponseMessage zir_msg;
1333 if (zi->has_zone == GNUNET_YES)
1334 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for zone `%s'\n", GNUNET_h2s(&zi->zone));
1336 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for all zones\n");
1338 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending empty `%s' message\n", "ZONE_ITERATION_RESPONSE");
1339 zir_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1340 zir_msg.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
1341 zir_msg.gns_header.r_id = htonl(zi->request_id);
1342 zir_msg.expire = GNUNET_TIME_absolute_hton(GNUNET_TIME_absolute_get_zero());
1343 zir_msg.name_len = htons (0);
1344 zir_msg.reserved = htons (0);
1345 zir_msg.rd_count = htons (0);
1346 zir_msg.rd_len = htons (0);
1347 memset (&zir_msg.public_key, '\0', sizeof (zir_msg.public_key));
1348 memset (&zir_msg.signature, '\0', sizeof (zir_msg.signature));
1349 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &zir_msg, GNUNET_NO);
1351 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing zone iterator\n");
1352 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, zi);
1358 struct ZoneIterationResponseMessage *zir_msg;
1359 if (zi->has_zone == GNUNET_YES)
1360 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over zone `%s'\n",
1361 name, GNUNET_h2s(&zi->zone));
1362 if (zi->has_zone == GNUNET_NO)
1363 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over all zones\n",
1371 name_len = strlen (name) +1;
1373 rd_ser_len = GNUNET_NAMESTORE_records_get_size(rd_count, rd);
1374 char rd_ser[rd_ser_len];
1375 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1376 msg_size = sizeof (struct ZoneIterationResponseMessage) + name_len + rd_ser_len;
1377 zir_msg = GNUNET_malloc(msg_size);
1379 name_tmp = (char *) &zir_msg[1];
1380 rd_tmp = &name_tmp[name_len];
1382 zir_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1383 zir_msg->gns_header.header.size = htons (msg_size);
1384 zir_msg->gns_header.r_id = htonl(zi->request_id);
1385 zir_msg->expire = GNUNET_TIME_absolute_hton(expire);
1386 zir_msg->reserved = htons (0);
1387 zir_msg->name_len = htons (name_len);
1388 zir_msg->rd_count = htons (rd_count);
1389 zir_msg->rd_len = htons (rd_ser_len);
1390 zir_msg->signature = *signature;
1391 GNUNET_assert (NULL != zone_key);
1392 if (zone_key != NULL)
1393 zir_msg->public_key = *zone_key;
1394 memcpy (name_tmp, name, name_len);
1395 memcpy (rd_tmp, rd_ser, rd_ser_len);
1397 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending empty `%s' message with size %u\n", "ZONE_ITERATION_RESPONSE", msg_size);
1398 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) zir_msg, GNUNET_NO);
1399 GNUNET_free (zir_msg);
1403 static void handle_iteration_start (void *cls,
1404 struct GNUNET_SERVER_Client * client,
1405 const struct GNUNET_MessageHeader * message)
1407 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
1409 struct ZoneIterationStartMessage * zis_msg = (struct ZoneIterationStartMessage *) message;
1410 struct GNUNET_NAMESTORE_Client *nc;
1411 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1414 nc = client_lookup(client);
1417 GNUNET_break_op (0);
1418 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1422 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
1423 zi->request_id = ntohl (zis_msg->gns_header.r_id);
1426 zi->zone = zis_msg->zone;
1428 GNUNET_HashCode dummy;
1429 GNUNET_HashCode *zone_tmp;
1430 memset (&dummy, '\0', sizeof (dummy));
1431 if (0 == memcmp (&dummy, &zis_msg->zone, sizeof (dummy)))
1433 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over all zones\n");
1434 zi->has_zone = GNUNET_NO;
1439 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over zone `%s'\n", GNUNET_h2s (&zis_msg->zone));
1440 zi->has_zone = GNUNET_YES;
1441 zone_tmp = &zis_msg->zone;
1444 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
1446 res = GSN_database->iterate_records (GSN_database->cls, zone_tmp , NULL, zi->offset , &zone_iteration_proc, zi);
1447 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1450 static void handle_iteration_stop (void *cls,
1451 struct GNUNET_SERVER_Client * client,
1452 const struct GNUNET_MessageHeader * message)
1454 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_STOP");
1456 struct GNUNET_NAMESTORE_Client *nc;
1457 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1458 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1461 nc = client_lookup(client);
1464 GNUNET_break_op (0);
1465 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1469 rid = ntohl (zis_msg->gns_header.r_id);
1470 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1472 if (zi->request_id == rid)
1477 GNUNET_break_op (0);
1478 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1482 GNUNET_CONTAINER_DLL_remove(nc->op_head, nc->op_tail, zi);
1483 if (GNUNET_YES == zi->has_zone)
1484 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration for zone `%s'\n", GNUNET_h2s (&zi->zone));
1486 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration all zones\n");
1489 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1492 static void handle_iteration_next (void *cls,
1493 struct GNUNET_SERVER_Client * client,
1494 const struct GNUNET_MessageHeader * message)
1496 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
1498 struct GNUNET_NAMESTORE_Client *nc;
1499 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1500 GNUNET_HashCode *zone_tmp;
1501 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1504 nc = client_lookup(client);
1507 GNUNET_break_op (0);
1508 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1512 rid = ntohl (zis_msg->gns_header.r_id);
1513 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1515 if (zi->request_id == rid)
1520 GNUNET_break_op (0);
1521 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1525 if (GNUNET_YES == zi->has_zone)
1526 zone_tmp = &zi->zone;
1531 GSN_database->iterate_records (GSN_database->cls, zone_tmp, NULL, zi->offset , &zone_iteration_proc, zi);
1532 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1535 int zonekey_file_it (void *cls, const char *filename)
1538 if ((filename != NULL) && (NULL != strstr(filename, ".zone")))
1540 struct GNUNET_CRYPTO_RsaPrivateKey * privkey;
1541 struct GNUNET_NAMESTORE_CryptoContainer *c;
1542 privkey = GNUNET_CRYPTO_rsa_key_create_from_file(filename);
1543 if (privkey == NULL)
1546 c = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1547 c->pubkey = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1548 c->privkey = privkey;
1549 GNUNET_CRYPTO_rsa_key_get_public(privkey, c->pubkey);
1550 GNUNET_CRYPTO_hash(c->pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &c->zone);
1552 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found zonefile for zone `%s'\n", GNUNET_h2s (&c->zone));
1554 GNUNET_CONTAINER_multihashmap_put(zonekeys, &c->zone, c, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1562 * Process template requests.
1564 * @param cls closure
1565 * @param server the initialized server
1566 * @param cfg configuration to use
1569 run (void *cls, struct GNUNET_SERVER_Handle *server,
1570 const struct GNUNET_CONFIGURATION_Handle *cfg)
1574 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
1576 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1577 {&handle_start, NULL,
1578 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
1579 {&handle_lookup_name, NULL,
1580 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
1581 {&handle_record_put, NULL,
1582 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
1583 {&handle_record_create, NULL,
1584 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
1585 {&handle_record_remove, NULL,
1586 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
1587 {&handle_zone_to_name, NULL,
1588 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, 0},
1589 {&handle_iteration_start, NULL,
1590 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage)},
1591 {&handle_iteration_next, NULL,
1592 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, 0},
1593 {&handle_iteration_stop, NULL,
1594 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, 0},
1600 /* Load private keys from disk */
1602 GNUNET_CONFIGURATION_get_value_filename (cfg, "namestore", "zonefile_directory",
1603 &zonefile_directory))
1605 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No directory to load zonefiles specified in configuration\n"));
1606 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1610 if (GNUNET_NO == GNUNET_DISK_file_test (zonefile_directory))
1612 if (GNUNET_SYSERR == GNUNET_DISK_directory_create (zonefile_directory))
1614 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Creating directory `%s' for zone files failed!\n"), zonefile_directory);
1615 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1618 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created directory `%s' for zone files\n", zonefile_directory);
1621 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Scanning directory `%s' for zone files\n", zonefile_directory);
1622 zonekeys = GNUNET_CONTAINER_multihashmap_create (10);
1623 GNUNET_DISK_directory_scan (zonefile_directory, zonekey_file_it, &counter);
1624 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u zone files\n", counter);
1626 /* Loading database plugin */
1628 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
1630 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
1632 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
1633 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
1634 GNUNET_free (database);
1635 if (GSN_database == NULL)
1637 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n",
1639 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1643 /* Configuring server handles */
1644 GNUNET_SERVER_add_handlers (server, handlers);
1645 snc = GNUNET_SERVER_notification_context_create (server, 16);
1646 GNUNET_SERVER_disconnect_notify (server,
1647 &client_disconnect_notification,
1650 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
1657 * The main function for the template service.
1659 * @param argc number of arguments from the command line
1660 * @param argv command line arguments
1661 * @return 0 ok, 1 on error
1664 main (int argc, char *const *argv)
1666 return (GNUNET_OK ==
1667 GNUNET_SERVICE_run (argc, argv, "namestore",
1668 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1671 /* end of gnunet-service-namestore.c */