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 filename where to write
114 * @param c the crypto container
116 * @return GNUNET_OK on success, GNUNET_SYSERR on fail
120 write_key_to_file (const char *filename, struct GNUNET_NAMESTORE_CryptoContainer *c)
122 struct GNUNET_CRYPTO_RsaPrivateKey *ret = c->privkey;
123 struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded *enc;
124 struct GNUNET_DISK_FileHandle *fd;
126 if (GNUNET_YES == GNUNET_DISK_file_test (filename))
128 GNUNET_HashCode zone;
129 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pubkey;
130 struct GNUNET_CRYPTO_RsaPrivateKey * privkey;
132 privkey = GNUNET_CRYPTO_rsa_key_create_from_file(filename);
135 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
136 _("File zone `%s' but corrupt content already exists, failed to write! \n"), GNUNET_h2s (&zone));
137 return GNUNET_SYSERR;
140 GNUNET_CRYPTO_rsa_key_get_public(privkey, &pubkey);
141 GNUNET_CRYPTO_hash(&pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone);
142 GNUNET_CRYPTO_rsa_key_free(privkey);
144 if (0 == memcmp (&zone, &c->zone, sizeof(zone)))
146 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
147 _("File zone `%s' containing this key already exists\n"), GNUNET_h2s (&zone));
152 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
153 _("File zone `%s' but different zone key already exists, failed to write! \n"), GNUNET_h2s (&zone));
157 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);
162 if (GNUNET_YES != GNUNET_DISK_file_test (filename))
164 /* must exist but not be accessible, fail for good! */
165 if (0 != ACCESS (filename, R_OK))
166 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "access", filename);
168 GNUNET_break (0); /* what is going on!? */
169 return GNUNET_SYSERR;
172 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "open", filename);
173 return GNUNET_SYSERR;
176 if (GNUNET_YES != GNUNET_DISK_file_lock (fd, 0, sizeof (struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded), GNUNET_YES))
177 return GNUNET_SYSERR;
178 enc = GNUNET_CRYPTO_rsa_encode_key (ret);
179 GNUNET_assert (enc != NULL);
180 GNUNET_assert (ntohs (enc->len) == GNUNET_DISK_file_write (fd, enc, ntohs (enc->len)));
182 GNUNET_DISK_file_sync (fd);
183 if (GNUNET_YES != GNUNET_DISK_file_unlock (fd, 0, sizeof (struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded)))
184 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "fcntl", filename);
185 GNUNET_assert (GNUNET_YES == GNUNET_DISK_file_close (fd));
187 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
188 _("Stored zonekey for zone `%s' in file `%s'\n"), GNUNET_h2s(&c->zone), c->filename);
192 int zone_to_disk_it (void *cls,
193 const GNUNET_HashCode * key,
196 struct GNUNET_NAMESTORE_CryptoContainer * c = value;
198 if (c->filename != NULL)
199 write_key_to_file(c->filename, c);
202 GNUNET_asprintf(&c->filename, "%s/%s.zkey", zonefile_directory, GNUNET_h2s_full (&c->zone));
203 write_key_to_file(c->filename, c);
206 GNUNET_CONTAINER_multihashmap_remove (zonekeys, key, value);;
207 GNUNET_CRYPTO_rsa_key_free(c->privkey);
208 GNUNET_free (c->pubkey);
209 GNUNET_free(c->filename);
216 struct GNUNET_TIME_Absolute
217 get_block_expiration_time (unsigned int rd_count, const struct GNUNET_NAMESTORE_RecordData *rd)
220 struct GNUNET_TIME_Absolute expire = GNUNET_TIME_absolute_get_forever();
222 return GNUNET_TIME_absolute_get_zero();
223 for (c = 0; c < rd_count; c++)
225 if (rd[c].expiration.abs_value < expire.abs_value)
226 expire = rd[c].expiration;
232 * Task run during shutdown.
238 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
240 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopping namestore service\n");
241 struct GNUNET_NAMESTORE_ZoneIteration * no;
242 struct GNUNET_NAMESTORE_ZoneIteration * tmp;
243 struct GNUNET_NAMESTORE_Client * nc;
244 struct GNUNET_NAMESTORE_Client * next;
246 GNUNET_SERVER_notification_context_destroy (snc);
249 GNUNET_CONTAINER_multihashmap_iterate(zonekeys, &zone_to_disk_it, NULL);
250 GNUNET_CONTAINER_multihashmap_destroy(zonekeys);
252 for (nc = client_head; nc != NULL; nc = next)
255 for (no = nc->op_head; no != NULL; no = tmp)
257 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
261 GNUNET_SERVER_client_drop(nc->client);
262 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
266 GNUNET_break (NULL == GNUNET_PLUGIN_unload (db_lib_name, GSN_database));
267 GNUNET_free (db_lib_name);
268 GNUNET_free_non_null(zonefile_directory);
271 static struct GNUNET_NAMESTORE_Client *
272 client_lookup (struct GNUNET_SERVER_Client *client)
274 struct GNUNET_NAMESTORE_Client * nc;
276 GNUNET_assert (NULL != client);
278 for (nc = client_head; nc != NULL; nc = nc->next)
280 if (client == nc->client)
287 * Called whenever a client is disconnected. Frees our
288 * resources associated with that client.
291 * @param client identification of the client
294 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
296 struct GNUNET_NAMESTORE_ZoneIteration * no;
297 struct GNUNET_NAMESTORE_Client * nc;
301 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected \n", client);
303 nc = client_lookup (client);
305 if ((NULL == client) || (NULL == nc))
311 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
316 GNUNET_SERVER_client_drop(nc->client);
317 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
324 static void handle_start (void *cls,
325 struct GNUNET_SERVER_Client * client,
326 const struct GNUNET_MessageHeader * message)
328 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", client);
330 struct GNUNET_NAMESTORE_Client * nc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Client));
332 GNUNET_SERVER_notification_context_add (snc, client);
333 GNUNET_CONTAINER_DLL_insert(client_head, client_tail, nc);
334 GNUNET_SERVER_client_keep (client);
335 GNUNET_SERVER_receive_done (client, GNUNET_OK);
338 struct LookupNameContext
340 struct GNUNET_NAMESTORE_Client *nc;
342 uint32_t record_type;
343 GNUNET_HashCode *zone;
347 void drop_iterator (void *cls,
348 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
349 struct GNUNET_TIME_Absolute expire,
352 const struct GNUNET_NAMESTORE_RecordData *rd,
353 const struct GNUNET_CRYPTO_RsaSignature *signature)
355 GNUNET_HashCode zone_hash;
357 if (NULL != zone_key)
359 GNUNET_CRYPTO_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_hash);
360 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleting zone `%s'\n", GNUNET_h2s (&zone_hash));
361 GSN_database->delete_zone (GSN_database->cls, &zone_hash);
365 (*stop) = GNUNET_YES;
371 handle_lookup_name_it (void *cls,
372 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
373 struct GNUNET_TIME_Absolute expire,
375 unsigned int rd_count,
376 const struct GNUNET_NAMESTORE_RecordData *rd,
377 const struct GNUNET_CRYPTO_RsaSignature *signature)
380 struct LookupNameContext *lnc = cls;
381 struct LookupNameResponseMessage *lnr_msg;
382 struct GNUNET_NAMESTORE_RecordData *rd_selected = NULL;
383 struct GNUNET_NAMESTORE_CryptoContainer *cc;
384 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
385 struct GNUNET_TIME_Absolute e;
386 GNUNET_HashCode zone_key_hash;
393 int copied_elements = 0;
394 int contains_signature = GNUNET_NO;
395 int authoritative = GNUNET_NO;
399 name_len = strlen(name) + 1;
401 /* count records to copy */
404 if (lnc->record_type != 0)
406 /* special record type needed */
407 for (c = 0; c < rd_count; c ++)
408 if (rd[c].record_type == lnc->record_type)
409 copied_elements++; /* found matching record */
410 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records with type %u for name `%s' in zone `%s'\n",
411 copied_elements, lnc->record_type, lnc->name, GNUNET_h2s(lnc->zone));
412 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
414 for (c = 0; c < rd_count; c ++)
416 if (rd[c].record_type == lnc->record_type)
418 /* found matching record */
419 memcpy (&rd_selected[copied_elements], &rd[c], sizeof (struct GNUNET_NAMESTORE_RecordData));
426 copied_elements = rd_count;
427 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
435 expire = GNUNET_TIME_UNIT_ZERO_ABS;
438 rd_ser_len = GNUNET_NAMESTORE_records_get_size(copied_elements, rd_selected);
439 char rd_ser[rd_ser_len];
440 GNUNET_NAMESTORE_records_serialize(copied_elements, rd_selected, rd_ser_len, rd_ser);
442 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records for name `%s' in zone `%s'\n",
443 copied_elements, lnc->name, GNUNET_h2s(lnc->zone));
445 if ((copied_elements == rd_count) && (NULL != signature))
446 contains_signature = GNUNET_YES; /* returning all records, so include signature */
448 contains_signature = GNUNET_NO; /* returning not all records, so do not include signature */
451 if ((NULL != zone_key) && (copied_elements == rd_count))
453 GNUNET_CRYPTO_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
454 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &zone_key_hash))
456 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &zone_key_hash);
457 e = get_block_expiration_time(rd_count, rd);
458 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd, rd_count);
459 GNUNET_assert (signature_new != NULL);
460 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating signature for name `%s' with %u records in zone `%s'\n",name, copied_elements, GNUNET_h2s(&zone_key_hash));
461 authoritative = GNUNET_YES;
464 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "I am not authoritative for name `%s' in zone `%s'\n",name, GNUNET_h2s(&zone_key_hash));
467 r_size = sizeof (struct LookupNameResponseMessage) +
468 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
472 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
473 lnr_msg = GNUNET_malloc (r_size);
474 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
475 lnr_msg->gns_header.header.size = ntohs (r_size);
476 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
477 lnr_msg->rd_count = htons (copied_elements);
478 lnr_msg->rd_len = htons (rd_ser_len);
479 lnr_msg->name_len = htons (name_len);
480 lnr_msg->expire = GNUNET_TIME_absolute_hton(get_block_expiration_time(copied_elements, rd_selected));
482 if (rd_selected != rd)
483 GNUNET_free (rd_selected);
485 if (zone_key != NULL)
486 lnr_msg->public_key = (*zone_key);
488 memset(&lnr_msg->public_key, '\0', sizeof (lnr_msg->public_key));
490 if (GNUNET_YES == authoritative)
491 { /* use new created signature */
492 lnr_msg->contains_sig = htons (GNUNET_YES);
493 GNUNET_assert (signature_new != NULL);
494 lnr_msg->signature = *signature_new;
495 GNUNET_free (signature_new);
497 else if (GNUNET_YES == contains_signature)
499 /* use existing signature */
500 lnr_msg->contains_sig = htons (GNUNET_YES);
501 GNUNET_assert (signature != NULL);
502 lnr_msg->signature = *signature;
506 /* use no signature */
507 memset (&lnr_msg->signature, '\0', sizeof (lnr_msg->signature));
510 name_tmp = (char *) &lnr_msg[1];
511 rd_tmp = &name_tmp[name_len];
513 memcpy (name_tmp, name, name_len);
514 memcpy (rd_tmp, rd_ser, rd_ser_len);
516 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
517 GNUNET_free (lnr_msg);
520 static void handle_lookup_name (void *cls,
521 struct GNUNET_SERVER_Client * client,
522 const struct GNUNET_MessageHeader * message)
524 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
525 struct LookupNameContext lnc;
526 struct GNUNET_NAMESTORE_Client *nc;
532 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
535 GNUNET_SERVER_receive_done (client, GNUNET_OK);
539 nc = client_lookup(client);
543 GNUNET_SERVER_receive_done (client, GNUNET_OK);
547 struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
548 rid = ntohl (ln_msg->gns_header.r_id);
549 name_len = ntohl (ln_msg->name_len);
550 type = ntohl (ln_msg->record_type);
552 if ((name_len == 0) || (name_len > 256))
555 GNUNET_SERVER_receive_done (client, GNUNET_OK);
559 name = (char *) &ln_msg[1];
560 if (name[name_len -1] != '\0')
563 GNUNET_SERVER_receive_done (client, GNUNET_OK);
568 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up all records for name `%s' in zone `%s'\n", name, GNUNET_h2s(&ln_msg->zone));
570 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));
572 /* do the actual lookup */
573 lnc.request_id = rid;
575 lnc.record_type = type;
577 lnc.zone = &ln_msg->zone;
578 GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, name, 0, &handle_lookup_name_it, &lnc);
580 GNUNET_SERVER_receive_done (client, GNUNET_OK);
583 static void handle_record_put (void *cls,
584 struct GNUNET_SERVER_Client * client,
585 const struct GNUNET_MessageHeader * message)
587 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_PUT");
588 struct GNUNET_NAMESTORE_Client *nc;
589 struct GNUNET_TIME_Absolute expire;
590 struct GNUNET_CRYPTO_RsaSignature *signature;
591 struct RecordPutResponseMessage rpr_msg;
600 int res = GNUNET_SYSERR;
602 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
605 GNUNET_SERVER_receive_done (client, GNUNET_OK);
609 nc = client_lookup (client);
613 GNUNET_SERVER_receive_done (client, GNUNET_OK);
617 struct RecordPutMessage * rp_msg = (struct RecordPutMessage *) message;
619 rid = ntohl (rp_msg->gns_header.r_id);
620 msg_size = ntohs (rp_msg->gns_header.header.size);
621 name_len = ntohs (rp_msg->name_len);
622 rd_count = ntohs (rp_msg->rd_count);
623 rd_ser_len = ntohs(rp_msg->rd_len);
625 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
628 GNUNET_SERVER_receive_done (client, GNUNET_OK);
632 if ((rd_count < 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
635 GNUNET_SERVER_receive_done (client, GNUNET_OK);
639 msg_size_exp = sizeof (struct RecordPutMessage) + name_len + rd_ser_len;
640 if (msg_size != msg_size_exp)
642 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
644 GNUNET_SERVER_receive_done (client, GNUNET_OK);
647 if ((name_len == 0) || (name_len > 256))
650 GNUNET_SERVER_receive_done (client, GNUNET_OK);
654 name = (char *) &rp_msg[1];
656 if (name[name_len -1] != '\0')
659 GNUNET_SERVER_receive_done (client, GNUNET_OK);
663 expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
664 signature = (struct GNUNET_CRYPTO_RsaSignature *) &rp_msg->signature;
666 rd_ser = &name[name_len];
667 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
668 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
669 if (res != GNUNET_OK)
675 GNUNET_HashCode zone_hash;
676 GNUNET_CRYPTO_hash (&rp_msg->public_key, sizeof (rp_msg->public_key), &zone_hash);
678 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting %u record for name `%s' in zone `%s'\n", rd_count, name, GNUNET_h2s(&zone_hash));
680 /* Database operation */
681 res = GSN_database->put_records(GSN_database->cls,
688 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting record for name `%s': %s\n",
689 name, (res == GNUNET_OK) ? "OK" : "FAIL");
693 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_PUT_RESPONSE");
694 rpr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
695 rpr_msg.gns_header.header.size = htons (sizeof (struct RecordPutResponseMessage));
696 rpr_msg.gns_header.r_id = htonl (rid);
697 rpr_msg.op_result = htonl (res);
698 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rpr_msg, GNUNET_NO);
700 GNUNET_SERVER_receive_done (client, GNUNET_OK);
703 struct CreateRecordContext
705 struct GNUNET_NAMESTORE_RecordData *rd;
706 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
707 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey;
708 struct GNUNET_TIME_Absolute expire;
715 handle_create_record_it (void *cls,
716 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey,
717 struct GNUNET_TIME_Absolute expire,
719 unsigned int rd_count,
720 const struct GNUNET_NAMESTORE_RecordData *rd,
721 const struct GNUNET_CRYPTO_RsaSignature *signature)
723 struct CreateRecordContext * crc = cls;
724 struct GNUNET_NAMESTORE_RecordData *rd_new = NULL;
725 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
726 struct GNUNET_TIME_Absolute block_expiration;
728 int exist = GNUNET_SYSERR;
729 int update = GNUNET_NO;
731 int rd_count_new = 0;
733 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u existing records for `%s'\n", rd_count, crc->name);
735 for (c = 0; c < rd_count; c++)
738 if ((crc->rd->record_type == rd[c].record_type) &&
739 (crc->rd->data_size == rd[c].data_size) &&
740 (0 == memcmp (crc->rd->data, rd[c].data, rd[c].data_size)))
742 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found existing records for `%s' to update expiration date!\n", crc->name);
744 if (crc->rd->expiration.abs_value != rd[c].expiration.abs_value)
750 if (exist == GNUNET_SYSERR)
751 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New record does not exist for name `%s'!\n", crc->name);
753 if (exist == GNUNET_SYSERR)
755 rd_new = GNUNET_malloc ((rd_count+1) * sizeof (struct GNUNET_NAMESTORE_RecordData));
756 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
757 rd_count_new = rd_count + 1;
758 rd_new[rd_count] = *(crc->rd);
760 else if (update == GNUNET_NO)
762 /* Exact same record already exists */
763 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No update for %s' record required!\n", crc->name);
767 else if (update == GNUNET_YES)
770 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating existing records for `%s'!\n", crc->name);
771 rd_new = GNUNET_malloc ((rd_count) * sizeof (struct GNUNET_NAMESTORE_RecordData));
772 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
773 rd_count_new = rd_count;
774 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating expiration from %llu to %llu!\n", rd_new[exist].expiration.abs_value, crc->rd->expiration.abs_value);
775 rd_new[exist].expiration = crc->rd->expiration;
778 block_expiration = GNUNET_TIME_absolute_max(crc->expire, expire);
779 if (block_expiration.abs_value != expire.abs_value)
780 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updated block expiration time\n");
782 memset (&dummy_signature, '\0', sizeof (dummy_signature));
784 /* Database operation */
785 GNUNET_assert ((rd_new != NULL) && (rd_count_new > 0));
786 res = GSN_database->put_records(GSN_database->cls,
787 (const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) crc->pubkey,
790 rd_count_new, rd_new,
792 GNUNET_break (GNUNET_OK == res);
793 if (res == GNUNET_OK)
794 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully put record for `%s' in database \n", crc->name);
796 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to put record for `%s' in database \n", crc->name);
800 GNUNET_free_non_null (rd_new);
804 /* failed to create the record */
805 crc->res = GNUNET_SYSERR;
808 /* database operations OK */
809 if (GNUNET_YES == update)
810 /* we updated an existing record */
811 crc->res = GNUNET_NO;
813 /* we created a new record */
814 crc->res = GNUNET_YES;
817 /* identical entry existed, so we did nothing */
818 crc->res = GNUNET_NO;
824 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Update result for name `%s' %u\n", crc->name, res);
828 static void handle_record_create (void *cls,
829 struct GNUNET_SERVER_Client * client,
830 const struct GNUNET_MessageHeader * message)
832 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_CREATE");
833 struct GNUNET_NAMESTORE_Client *nc;
834 struct GNUNET_NAMESTORE_CryptoContainer *cc;
835 struct CreateRecordContext crc;
836 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
837 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
838 struct RecordCreateResponseMessage rcr_msg;
839 GNUNET_HashCode pubkey_hash;
851 int res = GNUNET_SYSERR;
852 crc.res = GNUNET_SYSERR;
854 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
857 GNUNET_SERVER_receive_done (client, GNUNET_OK);
861 nc = client_lookup(client);
865 GNUNET_SERVER_receive_done (client, GNUNET_OK);
869 struct RecordCreateMessage * rp_msg = (struct RecordCreateMessage *) message;
870 rid = ntohl (rp_msg->gns_header.r_id);
871 name_len = ntohs (rp_msg->name_len);
872 msg_size = ntohs (message->size);
873 rd_count = ntohs (rp_msg->rd_count);
874 rd_ser_len = ntohs (rp_msg->rd_len);
875 key_len = ntohs (rp_msg->pkey_len);
876 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
878 if (msg_size != msg_size_exp)
880 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
882 GNUNET_SERVER_receive_done (client, GNUNET_OK);
886 if ((name_len == 0) || (name_len > 256))
889 GNUNET_SERVER_receive_done (client, GNUNET_OK);
893 pkey_tmp = (char *) &rp_msg[1];
894 name_tmp = &pkey_tmp[key_len];
895 rd_ser = &name_tmp[name_len];
897 if (name_tmp[name_len -1] != '\0')
900 GNUNET_SERVER_receive_done (client, GNUNET_OK);
904 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
906 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
907 if ((res != GNUNET_OK) || (rd_count != 1))
913 /* Extracting and converting private key */
914 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
915 GNUNET_assert (pkey != NULL);
916 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
917 GNUNET_CRYPTO_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
919 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &pubkey_hash))
921 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received new private key for zone `%s'\n",GNUNET_h2s(&pubkey_hash));
923 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
924 cc->privkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
925 cc->pubkey = GNUNET_malloc(sizeof (pub));
926 memcpy (cc->pubkey, &pub, sizeof(pub));
927 cc->zone = pubkey_hash;
929 GNUNET_CONTAINER_multihashmap_put(zonekeys, &pubkey_hash, cc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
932 crc.expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
933 crc.res = GNUNET_SYSERR;
939 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating record for name `%s' in zone `%s'\n", name_tmp, GNUNET_h2s(&pubkey_hash));
941 /* Get existing records for name */
942 res = GSN_database->iterate_records(GSN_database->cls, &pubkey_hash, name_tmp, 0, &handle_create_record_it, &crc);
943 if (res != GNUNET_SYSERR)
945 GNUNET_CRYPTO_rsa_key_free(pkey);
950 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
951 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
952 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
953 rcr_msg.gns_header.r_id = htonl (rid);
954 if ((GNUNET_OK == res) && (crc.res == GNUNET_YES))
955 rcr_msg.op_result = htonl (GNUNET_YES);
956 else if ((GNUNET_OK == res) && (crc.res == GNUNET_NO))
957 rcr_msg.op_result = htonl (GNUNET_NO);
959 rcr_msg.op_result = htonl (GNUNET_SYSERR);
960 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rcr_msg, GNUNET_NO);
962 GNUNET_SERVER_receive_done (client, GNUNET_OK);
966 struct RemoveRecordContext
968 struct GNUNET_NAMESTORE_RecordData *rd;
969 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
974 handle_record_remove_it (void *cls,
975 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
976 struct GNUNET_TIME_Absolute expire,
978 unsigned int rd_count,
979 const struct GNUNET_NAMESTORE_RecordData *rd,
980 const struct GNUNET_CRYPTO_RsaSignature *signature)
982 struct RemoveRecordContext *rrc = cls;
986 unsigned int rd_count_new;
988 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s 'currently has %u records\n", name, rd_count);
992 /* Could not find record to remove */
997 /* Find record to remove */
998 found = GNUNET_SYSERR;
999 for (c = 0; c < rd_count; c++)
1001 if ((rd[c].expiration.abs_value == rrc->rd->expiration.abs_value) &&
1002 (rd[c].flags == rrc->rd->flags) &&
1003 (rd[c].record_type == rrc->rd->record_type) &&
1004 (rd[c].data_size == rrc->rd->data_size) &&
1005 (0 == memcmp (rd[c].data, rrc->rd->data, rrc->rd->data_size)))
1007 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found record to remove!\n", rd_count);
1012 if (GNUNET_SYSERR == found)
1014 /* Could not find record to remove */
1019 rd_count_new = rd_count -1;
1020 struct GNUNET_NAMESTORE_RecordData rd_new[rd_count_new];
1022 unsigned int c2 = 0;
1023 for (c = 0; c < rd_count; c++)
1027 GNUNET_assert (c2 < rd_count_new);
1033 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s' now has %u records\n", name, rd_count_new);
1035 /* Create dummy signature */
1036 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
1037 memset (&dummy_signature, '\0', sizeof (dummy_signature));
1041 res = GSN_database->put_records(GSN_database->cls,
1045 rd_count_new, rd_new,
1047 if (GNUNET_OK != res)
1049 /* Could put records into database */
1057 static void handle_record_remove (void *cls,
1058 struct GNUNET_SERVER_Client * client,
1059 const struct GNUNET_MessageHeader * message)
1061 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
1062 struct GNUNET_NAMESTORE_Client *nc;
1063 struct RecordRemoveResponseMessage rrr_msg;
1064 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
1065 struct GNUNET_NAMESTORE_CryptoContainer *cc = NULL;
1066 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
1067 GNUNET_HashCode pubkey_hash;
1068 char * pkey_tmp = NULL;
1069 char * name_tmp = NULL;
1070 char * rd_ser = NULL;
1072 size_t name_len = 0;
1073 size_t rd_ser_len = 0;
1074 size_t msg_size = 0;
1075 size_t msg_size_exp = 0;
1079 int res = GNUNET_SYSERR;
1081 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
1083 GNUNET_break_op (0);
1084 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1088 nc = client_lookup(client);
1091 GNUNET_break_op (0);
1092 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1096 struct RecordRemoveMessage * rr_msg = (struct RecordRemoveMessage *) message;
1097 rid = ntohl (rr_msg->gns_header.r_id);
1098 name_len = ntohs (rr_msg->name_len);
1099 rd_ser_len = ntohs (rr_msg->rd_len);
1100 rd_count = ntohs (rr_msg->rd_count);
1101 key_len = ntohs (rr_msg->pkey_len);
1102 msg_size = ntohs (message->size);
1104 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1106 GNUNET_break_op (0);
1107 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1111 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
1113 GNUNET_break_op (0);
1114 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1118 msg_size_exp = sizeof (struct RecordRemoveMessage) + key_len + name_len + rd_ser_len;
1119 if (msg_size != msg_size_exp)
1121 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
1122 GNUNET_break_op (0);
1123 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1127 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
1129 GNUNET_break_op (0);
1130 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1134 pkey_tmp = (char *) &rr_msg[1];
1135 name_tmp = &pkey_tmp[key_len];
1136 rd_ser = &name_tmp[name_len];
1139 if ((name_len == 0) || (name_len > 256))
1141 GNUNET_break_op (0);
1142 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1146 if (name_tmp[name_len -1] != '\0')
1148 GNUNET_break_op (0);
1149 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1153 /* Extracting and converting private key */
1154 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1155 GNUNET_assert (pkey != NULL);
1156 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
1157 GNUNET_CRYPTO_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
1159 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &pubkey_hash))
1161 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received new private key for zone `%s'\n",GNUNET_h2s(&pubkey_hash));
1162 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1163 cc->privkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1164 cc->pubkey = GNUNET_malloc(sizeof (pub));
1165 memcpy (cc->pubkey, &pub, sizeof(pub));
1166 cc->zone = pubkey_hash;
1168 GNUNET_CONTAINER_multihashmap_put(zonekeys, &pubkey_hash, cc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1171 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
1172 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
1173 if ((res != GNUNET_OK) || (rd_count != 1))
1175 GNUNET_break_op (0);
1179 struct RemoveRecordContext rrc;
1183 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s' in zone `%s'\n", name_tmp, GNUNET_h2s(&pubkey_hash));
1185 /* Database operation */
1186 res = GSN_database->iterate_records (GSN_database->cls,
1190 handle_record_remove_it, &rrc);
1192 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s': %s\n",
1193 name_tmp, (rrc.op_res == 0) ? "OK" : "FAIL");
1198 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_REMOVE_RESPONSE");
1199 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
1200 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
1201 rrr_msg.gns_header.r_id = htonl (rid);
1202 rrr_msg.op_result = htonl (res);
1203 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rrr_msg, GNUNET_NO);
1205 GNUNET_CRYPTO_rsa_key_free (pkey);
1207 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1211 struct ZoneToNameCtx
1213 struct GNUNET_NAMESTORE_Client *nc;
1218 handle_zone_to_name_it (void *cls,
1219 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1220 struct GNUNET_TIME_Absolute expire,
1222 unsigned int rd_count,
1223 const struct GNUNET_NAMESTORE_RecordData *rd,
1224 const struct GNUNET_CRYPTO_RsaSignature *signature)
1226 struct ZoneToNameCtx * ztn_ctx = cls;
1227 struct ZoneToNameResponseMessage *ztnr_msg;
1228 int16_t res = GNUNET_SYSERR;
1229 uint16_t name_len = 0;
1230 uint16_t rd_ser_len = 0 ;
1231 int32_t contains_sig = 0;
1232 size_t msg_size = 0;
1234 char *rd_ser = NULL;
1239 if ((zone_key != NULL) && (name != NULL))
1242 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found results: name is `%s', has %u records\n", name, rd_count);
1244 name_len = strlen (name) +1;
1248 /* no result found */
1249 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found no results\n");
1256 rd_ser_len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
1257 rd_ser = GNUNET_malloc (rd_ser_len);
1258 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1263 if (signature != NULL)
1264 contains_sig = GNUNET_YES;
1266 contains_sig = GNUNET_NO;
1270 msg_size = sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len + contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature);
1271 ztnr_msg = GNUNET_malloc (msg_size);
1273 name_tmp = (char *) &ztnr_msg[1];
1274 rd_tmp = &name_tmp[name_len];
1275 sig_tmp = &rd_tmp[rd_ser_len];
1277 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_TO_NAME_RESPONSE");
1278 ztnr_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE);
1279 ztnr_msg->gns_header.header.size = htons (msg_size);
1280 ztnr_msg->gns_header.r_id = htonl (ztn_ctx->rid);
1281 ztnr_msg->res = htons (res);
1282 ztnr_msg->rd_len = htons (rd_ser_len);
1283 ztnr_msg->rd_count = htons (rd_count);
1284 ztnr_msg->name_len = htons (name_len);
1285 ztnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
1286 if (zone_key != NULL)
1287 ztnr_msg->zone_key = *zone_key;
1289 memset (&ztnr_msg->zone_key, '\0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1291 if ((name_len > 0) && (name != NULL))
1292 memcpy (name_tmp, name, name_len);
1294 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);
1295 if ((rd_ser_len > 0) && (rd_ser != NULL))
1296 memcpy (rd_tmp, rd_ser, rd_ser_len);
1297 if ((GNUNET_YES == contains_sig) && (signature != NULL))
1298 memcpy (sig_tmp, signature, contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature));
1300 GNUNET_SERVER_notification_context_unicast (snc, ztn_ctx->nc->client, (const struct GNUNET_MessageHeader *) ztnr_msg, GNUNET_NO);
1301 GNUNET_free (ztnr_msg);
1302 GNUNET_free_non_null (rd_ser);
1306 static void handle_zone_to_name (void *cls,
1307 struct GNUNET_SERVER_Client * client,
1308 const struct GNUNET_MessageHeader * message)
1310 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_TO_NAME");
1311 struct GNUNET_NAMESTORE_Client *nc;
1312 struct ZoneToNameCtx ztn_ctx;
1313 size_t msg_size = 0;
1316 if (ntohs (message->size) != sizeof (struct ZoneToNameMessage))
1318 GNUNET_break_op (0);
1319 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1323 nc = client_lookup(client);
1326 GNUNET_break_op (0);
1327 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1331 struct ZoneToNameMessage *ztn_msg = (struct ZoneToNameMessage *) message;
1333 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1335 GNUNET_break_op (0);
1336 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1340 rid = ntohl (ztn_msg->gns_header.r_id);
1345 char * z_tmp = strdup (GNUNET_h2s (&ztn_msg->zone));
1346 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up name for zone `%s' in zone `%s'\n",
1348 GNUNET_h2s (&ztn_msg->value_zone));
1349 GNUNET_free (z_tmp);
1351 GSN_database->zone_to_name (GSN_database->cls, &ztn_msg->zone, &ztn_msg->value_zone, &handle_zone_to_name_it, &ztn_ctx);
1353 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1356 struct ZoneIterationProcResult
1359 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
1362 struct GNUNET_CRYPTO_RsaSignature signature;
1363 struct GNUNET_TIME_Absolute expire;
1373 void zone_iteration_proc (void *cls,
1374 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1375 struct GNUNET_TIME_Absolute expire,
1377 unsigned int rd_count,
1378 const struct GNUNET_NAMESTORE_RecordData *rd,
1379 const struct GNUNET_CRYPTO_RsaSignature *signature)
1381 struct GNUNET_NAMESTORE_ZoneIteration *zi = cls;
1382 struct GNUNET_NAMESTORE_Client *nc = zi->client;
1383 struct GNUNET_NAMESTORE_CryptoContainer * cc;
1384 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
1385 struct GNUNET_TIME_Absolute e;
1386 GNUNET_HashCode zone_key_hash;
1387 int authoritative = GNUNET_NO;
1389 if ((zone_key == NULL) && (name == NULL))
1391 struct ZoneIterationResponseMessage zir_msg;
1392 if (zi->has_zone == GNUNET_YES)
1393 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for zone `%s'\n", GNUNET_h2s(&zi->zone));
1395 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for all zones\n");
1397 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending empty `%s' message\n", "ZONE_ITERATION_RESPONSE");
1398 zir_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1399 zir_msg.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
1400 zir_msg.gns_header.r_id = htonl(zi->request_id);
1401 zir_msg.expire = GNUNET_TIME_absolute_hton(GNUNET_TIME_absolute_get_zero());
1402 zir_msg.name_len = htons (0);
1403 zir_msg.reserved = htons (0);
1404 zir_msg.rd_count = htons (0);
1405 zir_msg.rd_len = htons (0);
1406 memset (&zir_msg.public_key, '\0', sizeof (zir_msg.public_key));
1407 memset (&zir_msg.signature, '\0', sizeof (zir_msg.signature));
1408 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &zir_msg, GNUNET_NO);
1410 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing zone iterator\n");
1411 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, zi);
1417 struct ZoneIterationResponseMessage *zir_msg;
1418 if (zi->has_zone == GNUNET_YES)
1419 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over zone `%s'\n",
1420 name, GNUNET_h2s(&zi->zone));
1421 if (zi->has_zone == GNUNET_NO)
1422 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over all zones\n",
1430 name_len = strlen (name) +1;
1432 rd_ser_len = GNUNET_NAMESTORE_records_get_size(rd_count, rd);
1433 char rd_ser[rd_ser_len];
1434 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1435 msg_size = sizeof (struct ZoneIterationResponseMessage) + name_len + rd_ser_len;
1436 zir_msg = GNUNET_malloc(msg_size);
1438 name_tmp = (char *) &zir_msg[1];
1439 rd_tmp = &name_tmp[name_len];
1441 GNUNET_CRYPTO_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
1442 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &zone_key_hash))
1444 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &zone_key_hash);
1445 e = get_block_expiration_time(rd_count, rd);
1447 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd, rd_count);
1448 GNUNET_assert (signature_new != NULL);
1449 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating signature for `%s' in zone `%s' with %u records and expiration %llu\n", name, GNUNET_h2s(&zone_key_hash), rd_count, e.abs_value);
1450 authoritative = GNUNET_YES;
1454 zir_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1455 zir_msg->gns_header.header.size = htons (msg_size);
1456 zir_msg->gns_header.r_id = htonl(zi->request_id);
1457 zir_msg->expire = GNUNET_TIME_absolute_hton(expire);
1458 zir_msg->reserved = htons (0);
1459 zir_msg->name_len = htons (name_len);
1460 zir_msg->rd_count = htons (rd_count);
1461 zir_msg->rd_len = htons (rd_ser_len);
1462 if ((GNUNET_YES == authoritative) && (NULL != signature_new))
1464 zir_msg->signature = *signature_new;
1465 GNUNET_free (signature_new);
1468 zir_msg->signature = *signature;
1469 GNUNET_assert (NULL != zone_key);
1470 if (zone_key != NULL)
1471 zir_msg->public_key = *zone_key;
1472 memcpy (name_tmp, name, name_len);
1473 memcpy (rd_tmp, rd_ser, rd_ser_len);
1475 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with size %u\n", "ZONE_ITERATION_RESPONSE", msg_size);
1476 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) zir_msg, GNUNET_NO);
1477 GNUNET_free (zir_msg);
1481 static void handle_iteration_start (void *cls,
1482 struct GNUNET_SERVER_Client * client,
1483 const struct GNUNET_MessageHeader * message)
1485 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
1487 struct ZoneIterationStartMessage * zis_msg = (struct ZoneIterationStartMessage *) message;
1488 struct GNUNET_NAMESTORE_Client *nc;
1489 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1491 nc = client_lookup(client);
1494 GNUNET_break_op (0);
1495 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1499 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
1500 zi->request_id = ntohl (zis_msg->gns_header.r_id);
1503 zi->zone = zis_msg->zone;
1505 GNUNET_HashCode dummy;
1506 GNUNET_HashCode *zone_tmp;
1507 memset (&dummy, '\0', sizeof (dummy));
1508 if (0 == memcmp (&dummy, &zis_msg->zone, sizeof (dummy)))
1510 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over all zones\n");
1511 zi->has_zone = GNUNET_NO;
1516 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over zone `%s'\n", GNUNET_h2s (&zis_msg->zone));
1517 zi->has_zone = GNUNET_YES;
1518 zone_tmp = &zis_msg->zone;
1521 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
1523 GSN_database->iterate_records (GSN_database->cls, zone_tmp , NULL, zi->offset , &zone_iteration_proc, zi);
1524 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1527 static void handle_iteration_stop (void *cls,
1528 struct GNUNET_SERVER_Client * client,
1529 const struct GNUNET_MessageHeader * message)
1531 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_STOP");
1533 struct GNUNET_NAMESTORE_Client *nc;
1534 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1535 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1538 nc = client_lookup(client);
1541 GNUNET_break_op (0);
1542 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1546 rid = ntohl (zis_msg->gns_header.r_id);
1547 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1549 if (zi->request_id == rid)
1554 GNUNET_break_op (0);
1555 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1559 GNUNET_CONTAINER_DLL_remove(nc->op_head, nc->op_tail, zi);
1560 if (GNUNET_YES == zi->has_zone)
1561 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration for zone `%s'\n", GNUNET_h2s (&zi->zone));
1563 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration all zones\n");
1566 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1569 static void handle_iteration_next (void *cls,
1570 struct GNUNET_SERVER_Client * client,
1571 const struct GNUNET_MessageHeader * message)
1573 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
1575 struct GNUNET_NAMESTORE_Client *nc;
1576 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1577 GNUNET_HashCode *zone_tmp;
1578 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1581 nc = client_lookup(client);
1584 GNUNET_break_op (0);
1585 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1589 rid = ntohl (zis_msg->gns_header.r_id);
1590 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1592 if (zi->request_id == rid)
1597 GNUNET_break_op (0);
1598 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1602 if (GNUNET_YES == zi->has_zone)
1603 zone_tmp = &zi->zone;
1608 GSN_database->iterate_records (GSN_database->cls, zone_tmp, NULL, zi->offset , &zone_iteration_proc, zi);
1609 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1612 int zonekey_file_it (void *cls, const char *filename)
1615 if ((filename != NULL) && (NULL != strstr(filename, ".zkey")))
1617 struct GNUNET_CRYPTO_RsaPrivateKey * privkey;
1618 struct GNUNET_NAMESTORE_CryptoContainer *c;
1619 privkey = GNUNET_CRYPTO_rsa_key_create_from_file(filename);
1620 if (privkey == NULL)
1623 c = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1624 c->pubkey = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1625 c->privkey = privkey;
1626 GNUNET_CRYPTO_rsa_key_get_public(privkey, c->pubkey);
1627 GNUNET_CRYPTO_hash(c->pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &c->zone);
1629 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found zonefile for zone `%s'\n", GNUNET_h2s (&c->zone));
1631 GNUNET_CONTAINER_multihashmap_put(zonekeys, &c->zone, c, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1639 * Process template requests.
1641 * @param cls closure
1642 * @param server the initialized server
1643 * @param cfg configuration to use
1646 run (void *cls, struct GNUNET_SERVER_Handle *server,
1647 const struct GNUNET_CONFIGURATION_Handle *cfg)
1651 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
1653 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1654 {&handle_start, NULL,
1655 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
1656 {&handle_lookup_name, NULL,
1657 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
1658 {&handle_record_put, NULL,
1659 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
1660 {&handle_record_create, NULL,
1661 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
1662 {&handle_record_remove, NULL,
1663 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
1664 {&handle_zone_to_name, NULL,
1665 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, 0},
1666 {&handle_iteration_start, NULL,
1667 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage)},
1668 {&handle_iteration_next, NULL,
1669 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, 0},
1670 {&handle_iteration_stop, NULL,
1671 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, 0},
1677 /* Load private keys from disk */
1679 GNUNET_CONFIGURATION_get_value_filename (cfg, "namestore", "zonefile_directory",
1680 &zonefile_directory))
1682 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No directory to load zonefiles specified in configuration\n"));
1683 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1687 if (GNUNET_NO == GNUNET_DISK_file_test (zonefile_directory))
1689 if (GNUNET_SYSERR == GNUNET_DISK_directory_create (zonefile_directory))
1691 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Creating directory `%s' for zone files failed!\n"), zonefile_directory);
1692 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1695 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created directory `%s' for zone files\n", zonefile_directory);
1698 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Scanning directory `%s' for zone files\n", zonefile_directory);
1699 zonekeys = GNUNET_CONTAINER_multihashmap_create (10);
1700 GNUNET_DISK_directory_scan (zonefile_directory, zonekey_file_it, &counter);
1701 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u zone files\n", counter);
1703 /* Loading database plugin */
1705 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
1707 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
1709 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
1710 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
1711 GNUNET_free (database);
1712 if (GSN_database == NULL)
1714 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n",
1716 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1720 /* Configuring server handles */
1721 GNUNET_SERVER_add_handlers (server, handlers);
1722 snc = GNUNET_SERVER_notification_context_create (server, 16);
1723 GNUNET_SERVER_disconnect_notify (server,
1724 &client_disconnect_notification,
1727 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
1734 * The main function for the template service.
1736 * @param argc number of arguments from the command line
1737 * @param argv command line arguments
1738 * @return 0 ok, 1 on error
1741 main (int argc, char *const *argv)
1743 return (GNUNET_OK ==
1744 GNUNET_SERVICE_run (argc, argv, "namestore",
1745 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1748 /* end of gnunet-service-namestore.c */