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;
48 struct GNUNET_CRYPTO_ShortHashCode zone;
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
76 struct GNUNET_CRYPTO_ShortHashCode zone;
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 struct GNUNET_CRYPTO_ShortHashCode 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_short_h2s (&zone));
137 return GNUNET_SYSERR;
140 GNUNET_CRYPTO_rsa_key_get_public (privkey, &pubkey);
141 GNUNET_CRYPTO_short_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_short_h2s (&zone));
152 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
153 _("File zone `%s' but different zone key already exists, failed to write! \n"), GNUNET_short_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))
178 GNUNET_assert (GNUNET_YES == GNUNET_DISK_file_close (fd));
179 return GNUNET_SYSERR;
181 enc = GNUNET_CRYPTO_rsa_encode_key (ret);
182 GNUNET_assert (enc != NULL);
183 GNUNET_assert (ntohs (enc->len) == GNUNET_DISK_file_write (fd, enc, ntohs (enc->len)));
185 GNUNET_DISK_file_sync (fd);
186 if (GNUNET_YES != GNUNET_DISK_file_unlock (fd, 0, sizeof (struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded)))
187 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "fcntl", filename);
188 GNUNET_assert (GNUNET_YES == GNUNET_DISK_file_close (fd));
190 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
191 _("Stored zonekey for zone `%s' in file `%s'\n"), GNUNET_short_h2s(&c->zone), c->filename);
195 int zone_to_disk_it (void *cls,
196 const GNUNET_HashCode *key,
199 struct GNUNET_NAMESTORE_CryptoContainer * c = value;
200 if (c->filename != NULL)
201 write_key_to_file(c->filename, c);
204 GNUNET_asprintf(&c->filename, "%s/%s.zkey", zonefile_directory, GNUNET_short_h2s (&c->zone));
205 write_key_to_file(c->filename, c);
209 GNUNET_assert (GNUNET_OK == GNUNET_CONTAINER_multihashmap_remove (zonekeys, key, value));
210 GNUNET_CRYPTO_rsa_key_free (c->privkey);
211 GNUNET_free (c->pubkey);
212 GNUNET_free (c->filename);
219 struct GNUNET_TIME_Absolute
220 get_block_expiration_time (unsigned int rd_count, const struct GNUNET_NAMESTORE_RecordData *rd)
223 struct GNUNET_TIME_Absolute expire = GNUNET_TIME_absolute_get_forever();
225 return GNUNET_TIME_absolute_get_zero();
226 for (c = 0; c < rd_count; c++)
228 if (rd[c].expiration.abs_value < expire.abs_value)
229 expire = rd[c].expiration;
235 * Task run during shutdown.
241 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
243 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopping namestore service\n");
244 struct GNUNET_NAMESTORE_ZoneIteration * no;
245 struct GNUNET_NAMESTORE_ZoneIteration * tmp;
246 struct GNUNET_NAMESTORE_Client * nc;
247 struct GNUNET_NAMESTORE_Client * next;
249 GNUNET_SERVER_notification_context_destroy (snc);
251 GNUNET_CONTAINER_multihashmap_iterate(zonekeys, &zone_to_disk_it, NULL);
252 GNUNET_CONTAINER_multihashmap_destroy(zonekeys);
254 for (nc = client_head; nc != NULL; nc = next)
257 for (no = nc->op_head; no != NULL; no = tmp)
259 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
263 GNUNET_SERVER_client_drop(nc->client);
264 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
268 GNUNET_break (NULL == GNUNET_PLUGIN_unload (db_lib_name, GSN_database));
269 GNUNET_free (db_lib_name);
270 GNUNET_free_non_null(zonefile_directory);
273 static struct GNUNET_NAMESTORE_Client *
274 client_lookup (struct GNUNET_SERVER_Client *client)
276 struct GNUNET_NAMESTORE_Client * nc;
278 GNUNET_assert (NULL != client);
280 for (nc = client_head; nc != NULL; nc = nc->next)
282 if (client == nc->client)
289 * Called whenever a client is disconnected. Frees our
290 * resources associated with that client.
293 * @param client identification of the client
296 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
298 struct GNUNET_NAMESTORE_ZoneIteration * no;
299 struct GNUNET_NAMESTORE_Client * nc;
303 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected \n", client);
305 nc = client_lookup (client);
307 if ((NULL == client) || (NULL == nc))
313 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
318 GNUNET_SERVER_client_drop(nc->client);
319 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
326 static void handle_start (void *cls,
327 struct GNUNET_SERVER_Client * client,
328 const struct GNUNET_MessageHeader * message)
330 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", client);
332 struct GNUNET_NAMESTORE_Client * nc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Client));
334 GNUNET_SERVER_notification_context_add (snc, client);
335 GNUNET_CONTAINER_DLL_insert(client_head, client_tail, nc);
336 GNUNET_SERVER_client_keep (client);
337 GNUNET_SERVER_receive_done (client, GNUNET_OK);
340 struct LookupNameContext
342 struct GNUNET_NAMESTORE_Client *nc;
344 uint32_t record_type;
345 struct GNUNET_CRYPTO_ShortHashCode *zone;
349 void drop_iterator (void *cls,
350 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
351 struct GNUNET_TIME_Absolute expire,
354 const struct GNUNET_NAMESTORE_RecordData *rd,
355 const struct GNUNET_CRYPTO_RsaSignature *signature)
357 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
359 if (NULL != zone_key)
361 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_hash);
362 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleting zone `%s'\n", GNUNET_short_h2s (&zone_hash));
363 GSN_database->delete_zone (GSN_database->cls, &zone_hash);
367 (*stop) = GNUNET_YES;
373 handle_lookup_name_it (void *cls,
374 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
375 struct GNUNET_TIME_Absolute expire,
377 unsigned int rd_count,
378 const struct GNUNET_NAMESTORE_RecordData *rd,
379 const struct GNUNET_CRYPTO_RsaSignature *signature)
382 struct LookupNameContext *lnc = cls;
383 struct LookupNameResponseMessage *lnr_msg;
384 struct GNUNET_NAMESTORE_RecordData *rd_selected = NULL;
385 struct GNUNET_NAMESTORE_CryptoContainer *cc;
386 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
387 struct GNUNET_TIME_Absolute e;
388 struct GNUNET_CRYPTO_ShortHashCode zone_key_hash;
389 GNUNET_HashCode long_hash;
396 int copied_elements = 0;
397 int contains_signature = GNUNET_NO;
398 int authoritative = GNUNET_NO;
402 name_len = strlen(name) + 1;
404 /* count records to copy */
407 if (lnc->record_type != 0)
409 /* special record type needed */
410 for (c = 0; c < rd_count; c ++)
411 if (rd[c].record_type == lnc->record_type)
412 copied_elements++; /* found matching record */
413 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records with type %u for name `%s' in zone `%s'\n",
414 copied_elements, lnc->record_type, lnc->name, GNUNET_short_h2s(lnc->zone));
415 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
417 for (c = 0; c < rd_count; c ++)
419 if (rd[c].record_type == lnc->record_type)
421 /* found matching record */
422 memcpy (&rd_selected[copied_elements], &rd[c], sizeof (struct GNUNET_NAMESTORE_RecordData));
429 copied_elements = rd_count;
430 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
438 expire = GNUNET_TIME_UNIT_ZERO_ABS;
441 rd_ser_len = GNUNET_NAMESTORE_records_get_size(copied_elements, rd_selected);
442 char rd_ser[rd_ser_len];
443 GNUNET_NAMESTORE_records_serialize(copied_elements, rd_selected, rd_ser_len, rd_ser);
445 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records for name `%s' in zone `%s'\n",
446 copied_elements, lnc->name, GNUNET_short_h2s(lnc->zone));
448 if ((copied_elements == rd_count) && (NULL != signature))
449 contains_signature = GNUNET_YES; /* returning all records, so include signature */
451 contains_signature = GNUNET_NO; /* returning not all records, so do not include signature */
454 if ((NULL != zone_key) && (copied_elements == rd_count))
456 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
457 GNUNET_CRYPTO_short_hash_double (&zone_key_hash, &long_hash);
458 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
460 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &long_hash);
461 e = get_block_expiration_time(rd_count, rd);
462 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd, rd_count);
463 GNUNET_assert (signature_new != NULL);
464 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating signature for name `%s' with %u records in zone `%s'\n",name, copied_elements, GNUNET_short_h2s(&zone_key_hash));
465 authoritative = GNUNET_YES;
468 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "I am not authoritative for name `%s' in zone `%s'\n",name, GNUNET_short_h2s(&zone_key_hash));
471 r_size = sizeof (struct LookupNameResponseMessage) +
472 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
476 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
477 lnr_msg = GNUNET_malloc (r_size);
478 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
479 lnr_msg->gns_header.header.size = ntohs (r_size);
480 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
481 lnr_msg->rd_count = htons (copied_elements);
482 lnr_msg->rd_len = htons (rd_ser_len);
483 lnr_msg->name_len = htons (name_len);
484 lnr_msg->expire = GNUNET_TIME_absolute_hton(get_block_expiration_time(copied_elements, rd_selected));
486 if (rd_selected != rd)
487 GNUNET_free (rd_selected);
489 if (zone_key != NULL)
490 lnr_msg->public_key = (*zone_key);
492 memset(&lnr_msg->public_key, '\0', sizeof (lnr_msg->public_key));
494 if (GNUNET_YES == authoritative)
495 { /* use new created signature */
496 lnr_msg->contains_sig = htons (GNUNET_YES);
497 GNUNET_assert (signature_new != NULL);
498 lnr_msg->signature = *signature_new;
499 GNUNET_free (signature_new);
501 else if (GNUNET_YES == contains_signature)
503 /* use existing signature */
504 lnr_msg->contains_sig = htons (GNUNET_YES);
505 GNUNET_assert (signature != NULL);
506 lnr_msg->signature = *signature;
510 /* use no signature */
511 memset (&lnr_msg->signature, '\0', sizeof (lnr_msg->signature));
514 name_tmp = (char *) &lnr_msg[1];
515 rd_tmp = &name_tmp[name_len];
517 memcpy (name_tmp, name, name_len);
518 memcpy (rd_tmp, rd_ser, rd_ser_len);
520 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
521 GNUNET_free (lnr_msg);
524 static void handle_lookup_name (void *cls,
525 struct GNUNET_SERVER_Client * client,
526 const struct GNUNET_MessageHeader * message)
528 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
529 struct LookupNameContext lnc;
530 struct GNUNET_NAMESTORE_Client *nc;
536 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
539 GNUNET_SERVER_receive_done (client, GNUNET_OK);
543 nc = client_lookup(client);
547 GNUNET_SERVER_receive_done (client, GNUNET_OK);
551 struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
552 rid = ntohl (ln_msg->gns_header.r_id);
553 name_len = ntohl (ln_msg->name_len);
554 type = ntohl (ln_msg->record_type);
556 if ((name_len == 0) || (name_len > 256))
559 GNUNET_SERVER_receive_done (client, GNUNET_OK);
563 name = (char *) &ln_msg[1];
564 if (name[name_len -1] != '\0')
567 GNUNET_SERVER_receive_done (client, GNUNET_OK);
572 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up all records for name `%s' in zone `%s'\n", name, GNUNET_short_h2s(&ln_msg->zone));
574 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up records with type %u for name `%s' in zone `%s'\n", type, name, GNUNET_short_h2s(&ln_msg->zone));
576 /* do the actual lookup */
577 lnc.request_id = rid;
579 lnc.record_type = type;
581 lnc.zone = &ln_msg->zone;
582 GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, name, 0, &handle_lookup_name_it, &lnc);
584 GNUNET_SERVER_receive_done (client, GNUNET_OK);
587 static void handle_record_put (void *cls,
588 struct GNUNET_SERVER_Client * client,
589 const struct GNUNET_MessageHeader * message)
591 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_PUT");
592 struct GNUNET_NAMESTORE_Client *nc;
593 struct GNUNET_TIME_Absolute expire;
594 struct GNUNET_CRYPTO_RsaSignature *signature;
595 struct RecordPutResponseMessage rpr_msg;
604 int res = GNUNET_SYSERR;
606 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
609 GNUNET_SERVER_receive_done (client, GNUNET_OK);
613 nc = client_lookup (client);
617 GNUNET_SERVER_receive_done (client, GNUNET_OK);
621 struct RecordPutMessage * rp_msg = (struct RecordPutMessage *) message;
623 rid = ntohl (rp_msg->gns_header.r_id);
624 msg_size = ntohs (rp_msg->gns_header.header.size);
625 name_len = ntohs (rp_msg->name_len);
626 rd_count = ntohs (rp_msg->rd_count);
627 rd_ser_len = ntohs(rp_msg->rd_len);
629 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
632 GNUNET_SERVER_receive_done (client, GNUNET_OK);
636 if ((rd_count < 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
639 GNUNET_SERVER_receive_done (client, GNUNET_OK);
643 msg_size_exp = sizeof (struct RecordPutMessage) + name_len + rd_ser_len;
644 if (msg_size != msg_size_exp)
646 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
648 GNUNET_SERVER_receive_done (client, GNUNET_OK);
651 if ((name_len == 0) || (name_len > 256))
654 GNUNET_SERVER_receive_done (client, GNUNET_OK);
658 name = (char *) &rp_msg[1];
660 if (name[name_len -1] != '\0')
663 GNUNET_SERVER_receive_done (client, GNUNET_OK);
667 expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
668 signature = (struct GNUNET_CRYPTO_RsaSignature *) &rp_msg->signature;
670 rd_ser = &name[name_len];
671 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
672 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
673 if (res != GNUNET_OK)
679 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
680 GNUNET_CRYPTO_short_hash (&rp_msg->public_key, sizeof (rp_msg->public_key), &zone_hash);
682 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting %u record for name `%s' in zone `%s'\n", rd_count, name, GNUNET_short_h2s(&zone_hash));
684 /* Database operation */
685 res = GSN_database->put_records(GSN_database->cls,
692 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting record for name `%s': %s\n",
693 name, (res == GNUNET_OK) ? "OK" : "FAIL");
697 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_PUT_RESPONSE");
698 rpr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
699 rpr_msg.gns_header.header.size = htons (sizeof (struct RecordPutResponseMessage));
700 rpr_msg.gns_header.r_id = htonl (rid);
701 rpr_msg.op_result = htonl (res);
702 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rpr_msg, GNUNET_NO);
704 GNUNET_SERVER_receive_done (client, GNUNET_OK);
707 struct CreateRecordContext
709 struct GNUNET_NAMESTORE_RecordData *rd;
710 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
711 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey;
712 struct GNUNET_TIME_Absolute expire;
719 handle_create_record_it (void *cls,
720 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey,
721 struct GNUNET_TIME_Absolute expire,
723 unsigned int rd_count,
724 const struct GNUNET_NAMESTORE_RecordData *rd,
725 const struct GNUNET_CRYPTO_RsaSignature *signature)
727 struct CreateRecordContext * crc = cls;
728 struct GNUNET_NAMESTORE_RecordData *rd_new = NULL;
729 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
730 struct GNUNET_TIME_Absolute block_expiration;
732 int exist = GNUNET_SYSERR;
733 int update = GNUNET_NO;
735 int rd_count_new = 0;
737 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u existing records for `%s'\n", rd_count, crc->name);
738 for (c = 0; c < rd_count; c++)
740 if ((crc->rd->record_type == GNUNET_NAMESTORE_TYPE_PKEY) && (rd[c].record_type == GNUNET_NAMESTORE_TYPE_PKEY))
742 /* Update unique PKEY */
747 else if ((crc->rd->record_type == GNUNET_NAMESTORE_TYPE_PSEU) && (rd[c].record_type == GNUNET_NAMESTORE_TYPE_PSEU))
749 /* Update unique PSEU */
754 else if ((crc->rd->record_type == rd[c].record_type) &&
755 (crc->rd->data_size == rd[c].data_size) &&
756 (0 == memcmp (crc->rd->data, rd[c].data, rd[c].data_size)))
758 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found existing records for `%s' to update expiration date!\n", crc->name);
760 if (crc->rd->expiration.abs_value != rd[c].expiration.abs_value)
766 if (exist == GNUNET_SYSERR)
767 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New record does not exist for name `%s'!\n", crc->name);
769 if (exist == GNUNET_SYSERR)
771 rd_new = GNUNET_malloc ((rd_count+1) * sizeof (struct GNUNET_NAMESTORE_RecordData));
772 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
773 rd_count_new = rd_count + 1;
774 rd_new[rd_count] = *(crc->rd);
776 else if (update == GNUNET_NO)
778 /* Exact same record already exists */
779 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No update for %s' record required!\n", crc->name);
783 else if (update == GNUNET_YES)
786 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating existing records for `%s'!\n", crc->name);
787 rd_new = GNUNET_malloc ((rd_count) * sizeof (struct GNUNET_NAMESTORE_RecordData));
788 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
789 rd_count_new = rd_count;
790 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating expiration from %llu to %llu!\n", rd_new[exist].expiration.abs_value, crc->rd->expiration.abs_value);
791 rd_new[exist] = *(crc->rd);
794 block_expiration = GNUNET_TIME_absolute_max(crc->expire, expire);
795 if (block_expiration.abs_value != expire.abs_value)
796 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updated block expiration time\n");
798 memset (&dummy_signature, '\0', sizeof (dummy_signature));
800 /* Database operation */
801 GNUNET_assert ((rd_new != NULL) && (rd_count_new > 0));
802 res = GSN_database->put_records(GSN_database->cls,
803 (const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) crc->pubkey,
806 rd_count_new, rd_new,
808 GNUNET_break (GNUNET_OK == res);
809 if (res == GNUNET_OK)
810 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully put record for `%s' in database \n", crc->name);
812 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to put record for `%s' in database \n", crc->name);
816 GNUNET_free_non_null (rd_new);
820 /* failed to create the record */
821 crc->res = GNUNET_SYSERR;
824 /* database operations OK */
825 if (GNUNET_YES == update)
827 /* we updated an existing record */
828 crc->res = GNUNET_NO;
832 /* we created a new record */
833 crc->res = GNUNET_YES;
837 /* identical entry existed, so we did nothing */
839 crc->res = GNUNET_NO;
845 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Update result for name `%s' %u\n", crc->name, res);
849 static void handle_record_create (void *cls,
850 struct GNUNET_SERVER_Client * client,
851 const struct GNUNET_MessageHeader * message)
853 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_CREATE");
854 struct GNUNET_NAMESTORE_Client *nc;
855 struct GNUNET_NAMESTORE_CryptoContainer *cc;
856 struct CreateRecordContext crc;
857 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
858 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
859 struct RecordCreateResponseMessage rcr_msg;
860 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
861 GNUNET_HashCode long_hash;
873 int res = GNUNET_SYSERR;
874 crc.res = GNUNET_SYSERR;
876 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
879 GNUNET_SERVER_receive_done (client, GNUNET_OK);
883 nc = client_lookup(client);
887 GNUNET_SERVER_receive_done (client, GNUNET_OK);
891 struct RecordCreateMessage * rp_msg = (struct RecordCreateMessage *) message;
892 rid = ntohl (rp_msg->gns_header.r_id);
893 name_len = ntohs (rp_msg->name_len);
894 msg_size = ntohs (message->size);
895 rd_count = ntohs (rp_msg->rd_count);
896 rd_ser_len = ntohs (rp_msg->rd_len);
897 key_len = ntohs (rp_msg->pkey_len);
898 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
900 if (msg_size != msg_size_exp)
902 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
904 GNUNET_SERVER_receive_done (client, GNUNET_OK);
908 if ((name_len == 0) || (name_len > 256))
911 GNUNET_SERVER_receive_done (client, GNUNET_OK);
915 pkey_tmp = (char *) &rp_msg[1];
916 name_tmp = &pkey_tmp[key_len];
917 rd_ser = &name_tmp[name_len];
919 if (name_tmp[name_len -1] != '\0')
922 GNUNET_SERVER_receive_done (client, GNUNET_OK);
926 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
928 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
929 if ((res != GNUNET_OK) || (rd_count != 1))
934 /* Extracting and converting private key */
935 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
936 GNUNET_assert (pkey != NULL);
937 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
938 GNUNET_CRYPTO_short_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
939 GNUNET_CRYPTO_short_hash_double (&pubkey_hash, &long_hash);
941 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
943 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received new private key for zone `%s'\n",GNUNET_short_h2s(&pubkey_hash));
945 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
946 cc->privkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
947 cc->pubkey = GNUNET_malloc(sizeof (pub));
948 memcpy (cc->pubkey, &pub, sizeof(pub));
949 cc->zone = pubkey_hash;
950 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, cc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
953 crc.expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
954 crc.res = GNUNET_SYSERR;
960 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating record for name `%s' in zone `%s'\n", name_tmp, GNUNET_short_h2s(&pubkey_hash));
962 /* Get existing records for name */
963 res = GSN_database->iterate_records(GSN_database->cls, &pubkey_hash, name_tmp, 0, &handle_create_record_it, &crc);
964 if (res != GNUNET_SYSERR)
966 GNUNET_CRYPTO_rsa_key_free(pkey);
971 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
972 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
973 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
974 rcr_msg.gns_header.r_id = htonl (rid);
975 if ((GNUNET_OK == res) && (crc.res == GNUNET_YES))
976 rcr_msg.op_result = htonl (GNUNET_YES);
977 else if ((GNUNET_OK == res) && (crc.res == GNUNET_NO))
978 rcr_msg.op_result = htonl (GNUNET_NO);
980 rcr_msg.op_result = htonl (GNUNET_SYSERR);
981 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rcr_msg, GNUNET_NO);
983 GNUNET_SERVER_receive_done (client, GNUNET_OK);
987 struct RemoveRecordContext
989 struct GNUNET_NAMESTORE_RecordData *rd;
990 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
996 handle_record_remove_it (void *cls,
997 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
998 struct GNUNET_TIME_Absolute expire,
1000 unsigned int rd_count,
1001 const struct GNUNET_NAMESTORE_RecordData *rd,
1002 const struct GNUNET_CRYPTO_RsaSignature *signature)
1004 struct RemoveRecordContext *rrc = cls;
1008 unsigned int rd_count_new;
1010 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s 'currently has %u records\n", name, rd_count);
1014 /* Could not find record to remove */
1019 /* Find record to remove */
1020 found = GNUNET_SYSERR;
1021 for (c = 0; c < rd_count; c++)
1024 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SENT FLAGES: %u \n",rd[c].flags);
1025 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "STORED FLAGES: %u \n",rrc->rd->flags);
1027 if (rd[c].flags != rrc->rd->flags)
1030 if (rd[c].record_type != rrc->rd->record_type)
1033 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SENT FLAGES: %u \n",rd[c].data_size);
1034 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "STORED FLAGES: %u \n",rrc->rd->data_size);
1036 if (rd[c].data_size != rrc->rd->data_size)
1039 if (0 != memcmp (rd[c].data, rrc->rd->data, rrc->rd->data_size))
1042 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found record to remove!\n", rd_count);
1046 if (GNUNET_SYSERR == found)
1048 /* Could not find record to remove */
1053 if (rd_count-1 == 0)
1055 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
1056 GNUNET_CRYPTO_short_hash (zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
1057 res = GSN_database->remove_records (GSN_database->cls,
1060 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1061 "No records left for name `%s', removing name\n",
1063 if (GNUNET_OK != res)
1065 /* Could put records into database */
1073 rd_count_new = rd_count -1;
1074 struct GNUNET_NAMESTORE_RecordData rd_new[rd_count_new];
1076 unsigned int c2 = 0;
1077 for (c = 0; c < rd_count; c++)
1081 GNUNET_assert (c2 < rd_count_new);
1087 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s' now has %u records\n", name, rd_count_new);
1089 /* Create dummy signature */
1090 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
1091 memset (&dummy_signature, '\0', sizeof (dummy_signature));
1095 res = GSN_database->put_records(GSN_database->cls,
1099 rd_count_new, rd_new,
1101 if (GNUNET_OK != res)
1103 /* Could put records into database */
1111 static void handle_record_remove (void *cls,
1112 struct GNUNET_SERVER_Client * client,
1113 const struct GNUNET_MessageHeader * message)
1115 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
1116 struct GNUNET_NAMESTORE_Client *nc;
1117 struct RecordRemoveResponseMessage rrr_msg;
1118 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
1119 struct GNUNET_NAMESTORE_CryptoContainer *cc = NULL;
1120 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
1121 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
1122 GNUNET_HashCode long_hash;
1123 char * pkey_tmp = NULL;
1124 char * name_tmp = NULL;
1125 char * rd_ser = NULL;
1127 size_t name_len = 0;
1128 size_t rd_ser_len = 0;
1129 size_t msg_size = 0;
1130 size_t msg_size_exp = 0;
1134 int res = GNUNET_SYSERR;
1136 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
1138 GNUNET_break_op (0);
1139 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1143 nc = client_lookup(client);
1146 GNUNET_break_op (0);
1147 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1151 struct RecordRemoveMessage * rr_msg = (struct RecordRemoveMessage *) message;
1152 rid = ntohl (rr_msg->gns_header.r_id);
1153 name_len = ntohs (rr_msg->name_len);
1154 rd_ser_len = ntohs (rr_msg->rd_len);
1155 rd_count = ntohs (rr_msg->rd_count);
1156 key_len = ntohs (rr_msg->pkey_len);
1157 msg_size = ntohs (message->size);
1159 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1161 GNUNET_break_op (0);
1162 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1166 if ((name_len >=256) || (name_len == 0))
1168 GNUNET_break_op (0);
1169 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1173 msg_size_exp = sizeof (struct RecordRemoveMessage) + key_len + name_len + rd_ser_len;
1174 if (msg_size != msg_size_exp)
1176 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
1177 GNUNET_break_op (0);
1178 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1182 pkey_tmp = (char *) &rr_msg[1];
1183 name_tmp = &pkey_tmp[key_len];
1184 rd_ser = &name_tmp[name_len];
1187 if ((name_len == 0) || (name_len > 256))
1189 GNUNET_break_op (0);
1190 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1194 if (name_tmp[name_len -1] != '\0')
1196 GNUNET_break_op (0);
1197 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1201 /* Extracting and converting private key */
1202 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1203 GNUNET_assert (pkey != NULL);
1204 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
1205 GNUNET_CRYPTO_short_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
1206 GNUNET_CRYPTO_short_hash_double (&pubkey_hash, &long_hash);
1208 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
1210 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received new private key for zone `%s'\n",GNUNET_short_h2s(&pubkey_hash));
1211 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1212 cc->privkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1213 cc->pubkey = GNUNET_malloc(sizeof (pub));
1214 memcpy (cc->pubkey, &pub, sizeof(pub));
1215 cc->zone = pubkey_hash;
1217 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, cc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1221 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
1222 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
1223 if ((res != GNUNET_OK) || (rd_count > 1))
1225 GNUNET_break_op (0);
1231 /* remove the whole name and all records */
1232 /* Database operation */
1233 res = GSN_database->remove_records (GSN_database->cls,
1236 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing name `%s': %s\n",
1237 name_tmp, (GNUNET_OK == res) ? "OK" : "FAIL");
1239 if (GNUNET_OK != res)
1240 /* Could not remove entry from database */
1247 /* remove a single record */
1248 struct RemoveRecordContext rrc;
1252 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s' in zone `%s'\n", name_tmp, GNUNET_short_h2s(&pubkey_hash));
1254 /* Database operation */
1255 res = GSN_database->iterate_records (GSN_database->cls,
1259 handle_record_remove_it, &rrc);
1261 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s': %s\n",
1262 name_tmp, (rrc.op_res == 0) ? "OK" : "FAIL");
1267 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_REMOVE_RESPONSE");
1268 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
1269 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
1270 rrr_msg.gns_header.r_id = htonl (rid);
1271 rrr_msg.op_result = htonl (res);
1272 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rrr_msg, GNUNET_NO);
1274 GNUNET_CRYPTO_rsa_key_free (pkey);
1276 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1280 struct ZoneToNameCtx
1282 struct GNUNET_NAMESTORE_Client *nc;
1287 handle_zone_to_name_it (void *cls,
1288 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1289 struct GNUNET_TIME_Absolute expire,
1291 unsigned int rd_count,
1292 const struct GNUNET_NAMESTORE_RecordData *rd,
1293 const struct GNUNET_CRYPTO_RsaSignature *signature)
1295 struct ZoneToNameCtx * ztn_ctx = cls;
1296 struct ZoneToNameResponseMessage *ztnr_msg;
1297 int16_t res = GNUNET_SYSERR;
1298 uint16_t name_len = 0;
1299 uint16_t rd_ser_len = 0 ;
1300 int32_t contains_sig = 0;
1301 size_t msg_size = 0;
1303 char *rd_ser = NULL;
1308 if ((zone_key != NULL) && (name != NULL))
1311 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found results: name is `%s', has %u records\n", name, rd_count);
1313 name_len = strlen (name) +1;
1317 /* no result found */
1318 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found no results\n");
1325 rd_ser_len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
1326 rd_ser = GNUNET_malloc (rd_ser_len);
1327 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1332 if (signature != NULL)
1333 contains_sig = GNUNET_YES;
1335 contains_sig = GNUNET_NO;
1339 msg_size = sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len + contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature);
1340 ztnr_msg = GNUNET_malloc (msg_size);
1342 name_tmp = (char *) &ztnr_msg[1];
1343 rd_tmp = &name_tmp[name_len];
1344 sig_tmp = &rd_tmp[rd_ser_len];
1346 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_TO_NAME_RESPONSE");
1347 ztnr_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE);
1348 ztnr_msg->gns_header.header.size = htons (msg_size);
1349 ztnr_msg->gns_header.r_id = htonl (ztn_ctx->rid);
1350 ztnr_msg->res = htons (res);
1351 ztnr_msg->rd_len = htons (rd_ser_len);
1352 ztnr_msg->rd_count = htons (rd_count);
1353 ztnr_msg->name_len = htons (name_len);
1354 ztnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
1355 if (zone_key != NULL)
1356 ztnr_msg->zone_key = *zone_key;
1358 memset (&ztnr_msg->zone_key, '\0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1360 if ((name_len > 0) && (name != NULL))
1361 memcpy (name_tmp, name, name_len);
1363 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);
1364 if ((rd_ser_len > 0) && (rd_ser != NULL))
1365 memcpy (rd_tmp, rd_ser, rd_ser_len);
1366 if ((GNUNET_YES == contains_sig) && (signature != NULL))
1367 memcpy (sig_tmp, signature, contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature));
1369 GNUNET_SERVER_notification_context_unicast (snc, ztn_ctx->nc->client, (const struct GNUNET_MessageHeader *) ztnr_msg, GNUNET_NO);
1370 GNUNET_free (ztnr_msg);
1371 GNUNET_free_non_null (rd_ser);
1375 static void handle_zone_to_name (void *cls,
1376 struct GNUNET_SERVER_Client * client,
1377 const struct GNUNET_MessageHeader * message)
1379 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_TO_NAME");
1380 struct GNUNET_NAMESTORE_Client *nc;
1381 struct ZoneToNameCtx ztn_ctx;
1382 size_t msg_size = 0;
1385 if (ntohs (message->size) != sizeof (struct ZoneToNameMessage))
1387 GNUNET_break_op (0);
1388 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1392 nc = client_lookup(client);
1395 GNUNET_break_op (0);
1396 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1400 struct ZoneToNameMessage *ztn_msg = (struct ZoneToNameMessage *) message;
1402 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1404 GNUNET_break_op (0);
1405 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1409 rid = ntohl (ztn_msg->gns_header.r_id);
1414 struct GNUNET_CRYPTO_ShortHashAsciiEncoded z_tmp;
1415 GNUNET_CRYPTO_short_hash_to_enc(&ztn_msg->zone, &z_tmp);
1416 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up name for zone `%s' in zone `%s'\n",
1418 GNUNET_short_h2s (&ztn_msg->value_zone));
1420 GSN_database->zone_to_name (GSN_database->cls, &ztn_msg->zone, &ztn_msg->value_zone, &handle_zone_to_name_it, &ztn_ctx);
1422 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1425 struct ZoneIterationProcResult
1428 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
1431 struct GNUNET_CRYPTO_RsaSignature signature;
1432 struct GNUNET_TIME_Absolute expire;
1442 void zone_iteration_proc (void *cls,
1443 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1444 struct GNUNET_TIME_Absolute expire,
1446 unsigned int rd_count,
1447 const struct GNUNET_NAMESTORE_RecordData *rd,
1448 const struct GNUNET_CRYPTO_RsaSignature *signature)
1450 struct GNUNET_NAMESTORE_ZoneIteration *zi = cls;
1451 struct GNUNET_NAMESTORE_Client *nc = zi->client;
1452 struct GNUNET_NAMESTORE_CryptoContainer * cc;
1453 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
1454 struct GNUNET_TIME_Absolute e;
1455 struct GNUNET_CRYPTO_ShortHashCode zone_key_hash;
1456 GNUNET_HashCode long_hash;
1457 int authoritative = GNUNET_NO;
1459 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ZONE RESULT `%s'\n", name);
1461 if ((zone_key == NULL) && (name == NULL))
1463 struct ZoneIterationResponseMessage zir_msg;
1464 if (zi->has_zone == GNUNET_YES)
1465 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for zone `%s'\n", GNUNET_short_h2s(&zi->zone));
1467 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for all zones\n");
1469 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending empty `%s' message\n", "ZONE_ITERATION_RESPONSE");
1470 zir_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1471 zir_msg.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
1472 zir_msg.gns_header.r_id = htonl(zi->request_id);
1473 zir_msg.expire = GNUNET_TIME_absolute_hton(GNUNET_TIME_absolute_get_zero());
1474 zir_msg.name_len = htons (0);
1475 zir_msg.reserved = htons (0);
1476 zir_msg.rd_count = htons (0);
1477 zir_msg.rd_len = htons (0);
1478 memset (&zir_msg.public_key, '\0', sizeof (zir_msg.public_key));
1479 memset (&zir_msg.signature, '\0', sizeof (zir_msg.signature));
1480 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &zir_msg, GNUNET_NO);
1482 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing zone iterator\n");
1483 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, zi);
1489 struct ZoneIterationResponseMessage *zir_msg;
1490 if (zi->has_zone == GNUNET_YES)
1491 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over zone `%s'\n",
1492 name, GNUNET_short_h2s(&zi->zone));
1493 if (zi->has_zone == GNUNET_NO)
1494 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over all zones\n",
1502 name_len = strlen (name) +1;
1504 rd_ser_len = GNUNET_NAMESTORE_records_get_size(rd_count, rd);
1505 char rd_ser[rd_ser_len];
1506 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1507 msg_size = sizeof (struct ZoneIterationResponseMessage) + name_len + rd_ser_len;
1508 zir_msg = GNUNET_malloc(msg_size);
1510 name_tmp = (char *) &zir_msg[1];
1511 rd_tmp = &name_tmp[name_len];
1513 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
1514 GNUNET_CRYPTO_short_hash_double(&zone_key_hash, &long_hash);
1515 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
1517 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &long_hash);
1518 e = get_block_expiration_time(rd_count, rd);
1520 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd, rd_count);
1521 GNUNET_assert (signature_new != NULL);
1522 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating signature for `%s' in zone `%s' with %u records and expiration %llu\n", name, GNUNET_short_h2s(&zone_key_hash), rd_count, e.abs_value);
1523 authoritative = GNUNET_YES;
1526 zir_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1527 zir_msg->gns_header.header.size = htons (msg_size);
1528 zir_msg->gns_header.r_id = htonl(zi->request_id);
1529 zir_msg->expire = GNUNET_TIME_absolute_hton(expire);
1530 zir_msg->reserved = htons (0);
1531 zir_msg->name_len = htons (name_len);
1532 zir_msg->rd_count = htons (rd_count);
1533 zir_msg->rd_len = htons (rd_ser_len);
1534 if ((GNUNET_YES == authoritative) && (NULL != signature_new))
1536 zir_msg->signature = *signature_new;
1537 GNUNET_free (signature_new);
1540 zir_msg->signature = *signature;
1541 GNUNET_assert (NULL != zone_key);
1542 if (zone_key != NULL)
1543 zir_msg->public_key = *zone_key;
1544 memcpy (name_tmp, name, name_len);
1545 memcpy (rd_tmp, rd_ser, rd_ser_len);
1547 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with size %u\n", "ZONE_ITERATION_RESPONSE", msg_size);
1548 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) zir_msg, GNUNET_NO);
1549 GNUNET_free (zir_msg);
1553 static void handle_iteration_start (void *cls,
1554 struct GNUNET_SERVER_Client * client,
1555 const struct GNUNET_MessageHeader * message)
1557 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
1559 struct ZoneIterationStartMessage * zis_msg = (struct ZoneIterationStartMessage *) message;
1560 struct GNUNET_NAMESTORE_Client *nc;
1561 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1563 nc = client_lookup(client);
1566 GNUNET_break_op (0);
1567 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1571 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
1572 zi->request_id = ntohl (zis_msg->gns_header.r_id);
1575 zi->zone = zis_msg->zone;
1577 struct GNUNET_CRYPTO_ShortHashCode dummy;
1578 struct GNUNET_CRYPTO_ShortHashCode *zone_tmp;
1579 memset (&dummy, '\0', sizeof (dummy));
1580 if (0 == memcmp (&dummy, &zis_msg->zone, sizeof (dummy)))
1582 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over all zones\n");
1583 zi->has_zone = GNUNET_NO;
1588 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over zone `%s'\n", GNUNET_short_h2s (&zis_msg->zone));
1589 zi->has_zone = GNUNET_YES;
1590 zone_tmp = &zis_msg->zone;
1593 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
1595 GSN_database->iterate_records (GSN_database->cls, zone_tmp , NULL, zi->offset , &zone_iteration_proc, zi);
1596 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1599 static void handle_iteration_stop (void *cls,
1600 struct GNUNET_SERVER_Client * client,
1601 const struct GNUNET_MessageHeader * message)
1603 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_STOP");
1605 struct GNUNET_NAMESTORE_Client *nc;
1606 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1607 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1610 nc = client_lookup(client);
1613 GNUNET_break_op (0);
1614 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1618 rid = ntohl (zis_msg->gns_header.r_id);
1619 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1621 if (zi->request_id == rid)
1626 GNUNET_break_op (0);
1627 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1631 GNUNET_CONTAINER_DLL_remove(nc->op_head, nc->op_tail, zi);
1632 if (GNUNET_YES == zi->has_zone)
1633 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration for zone `%s'\n", GNUNET_short_h2s (&zi->zone));
1635 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration all zones\n");
1638 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1641 static void handle_iteration_next (void *cls,
1642 struct GNUNET_SERVER_Client * client,
1643 const struct GNUNET_MessageHeader * message)
1645 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
1647 struct GNUNET_NAMESTORE_Client *nc;
1648 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1649 struct GNUNET_CRYPTO_ShortHashCode *zone_tmp;
1650 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1653 nc = client_lookup(client);
1656 GNUNET_break_op (0);
1657 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1661 rid = ntohl (zis_msg->gns_header.r_id);
1662 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1664 if (zi->request_id == rid)
1669 GNUNET_break_op (0);
1670 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1674 if (GNUNET_YES == zi->has_zone)
1675 zone_tmp = &zi->zone;
1680 GSN_database->iterate_records (GSN_database->cls, zone_tmp, NULL, zi->offset , &zone_iteration_proc, zi);
1681 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1684 int zonekey_file_it (void *cls, const char *filename)
1686 GNUNET_HashCode long_hash;
1688 if ((filename != NULL) && (NULL != strstr(filename, ".zkey")))
1690 struct GNUNET_CRYPTO_RsaPrivateKey * privkey;
1691 struct GNUNET_NAMESTORE_CryptoContainer *c;
1692 privkey = GNUNET_CRYPTO_rsa_key_create_from_file(filename);
1693 if (privkey == NULL)
1696 c = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1697 c->pubkey = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1698 c->privkey = privkey;
1699 GNUNET_CRYPTO_rsa_key_get_public(privkey, c->pubkey);
1700 GNUNET_CRYPTO_short_hash(c->pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &c->zone);
1702 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found zonefile for zone `%s'\n", GNUNET_short_h2s (&c->zone));
1703 GNUNET_CRYPTO_short_hash_double (&c->zone, &long_hash);
1704 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, c, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1712 * Process template requests.
1714 * @param cls closure
1715 * @param server the initialized server
1716 * @param cfg configuration to use
1719 run (void *cls, struct GNUNET_SERVER_Handle *server,
1720 const struct GNUNET_CONFIGURATION_Handle *cfg)
1724 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
1726 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1727 {&handle_start, NULL,
1728 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
1729 {&handle_lookup_name, NULL,
1730 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
1731 {&handle_record_put, NULL,
1732 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
1733 {&handle_record_create, NULL,
1734 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
1735 {&handle_record_remove, NULL,
1736 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
1737 {&handle_zone_to_name, NULL,
1738 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, 0},
1739 {&handle_iteration_start, NULL,
1740 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage)},
1741 {&handle_iteration_next, NULL,
1742 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, 0},
1743 {&handle_iteration_stop, NULL,
1744 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, 0},
1750 /* Load private keys from disk */
1752 GNUNET_CONFIGURATION_get_value_filename (cfg, "namestore", "zonefile_directory",
1753 &zonefile_directory))
1755 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No directory to load zonefiles specified in configuration\n"));
1756 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1760 if (GNUNET_NO == GNUNET_DISK_file_test (zonefile_directory))
1762 if (GNUNET_SYSERR == GNUNET_DISK_directory_create (zonefile_directory))
1764 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Creating directory `%s' for zone files failed!\n"), zonefile_directory);
1765 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1768 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created directory `%s' for zone files\n", zonefile_directory);
1771 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Scanning directory `%s' for zone files\n", zonefile_directory);
1772 zonekeys = GNUNET_CONTAINER_multihashmap_create (10);
1773 GNUNET_DISK_directory_scan (zonefile_directory, zonekey_file_it, &counter);
1774 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u zone files\n", counter);
1776 /* Loading database plugin */
1778 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
1780 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
1782 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
1783 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
1784 GNUNET_free (database);
1785 if (GSN_database == NULL)
1787 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n",
1789 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1793 /* Configuring server handles */
1794 GNUNET_SERVER_add_handlers (server, handlers);
1795 snc = GNUNET_SERVER_notification_context_create (server, 16);
1796 GNUNET_SERVER_disconnect_notify (server,
1797 &client_disconnect_notification,
1800 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
1807 * The main function for the template service.
1809 * @param argc number of arguments from the command line
1810 * @param argv command line arguments
1811 * @return 0 ok, 1 on error
1814 main (int argc, char *const *argv)
1816 return (GNUNET_OK ==
1817 GNUNET_SERVICE_run (argc, argv, "namestore",
1818 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1821 /* end of gnunet-service-namestore.c */