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))
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_short_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_short_h2s (&c->zone));
203 write_key_to_file(c->filename, c);
207 GNUNET_CONTAINER_multihashmap_remove (zonekeys, key, value);
208 GNUNET_CRYPTO_rsa_key_free(c->privkey);
209 GNUNET_free (c->pubkey);
210 GNUNET_free(c->filename);
217 struct GNUNET_TIME_Absolute
218 get_block_expiration_time (unsigned int rd_count, const struct GNUNET_NAMESTORE_RecordData *rd)
221 struct GNUNET_TIME_Absolute expire = GNUNET_TIME_absolute_get_forever();
223 return GNUNET_TIME_absolute_get_zero();
224 for (c = 0; c < rd_count; c++)
226 if (rd[c].expiration.abs_value < expire.abs_value)
227 expire = rd[c].expiration;
233 * Task run during shutdown.
239 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
241 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopping namestore service\n");
242 struct GNUNET_NAMESTORE_ZoneIteration * no;
243 struct GNUNET_NAMESTORE_ZoneIteration * tmp;
244 struct GNUNET_NAMESTORE_Client * nc;
245 struct GNUNET_NAMESTORE_Client * next;
247 GNUNET_SERVER_notification_context_destroy (snc);
250 GNUNET_CONTAINER_multihashmap_iterate(zonekeys, &zone_to_disk_it, NULL);
251 GNUNET_CONTAINER_multihashmap_destroy(zonekeys);
253 for (nc = client_head; nc != NULL; nc = next)
256 for (no = nc->op_head; no != NULL; no = tmp)
258 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
262 GNUNET_SERVER_client_drop(nc->client);
263 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
267 GNUNET_break (NULL == GNUNET_PLUGIN_unload (db_lib_name, GSN_database));
268 GNUNET_free (db_lib_name);
269 GNUNET_free_non_null(zonefile_directory);
272 static struct GNUNET_NAMESTORE_Client *
273 client_lookup (struct GNUNET_SERVER_Client *client)
275 struct GNUNET_NAMESTORE_Client * nc;
277 GNUNET_assert (NULL != client);
279 for (nc = client_head; nc != NULL; nc = nc->next)
281 if (client == nc->client)
288 * Called whenever a client is disconnected. Frees our
289 * resources associated with that client.
292 * @param client identification of the client
295 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
297 struct GNUNET_NAMESTORE_ZoneIteration * no;
298 struct GNUNET_NAMESTORE_Client * nc;
302 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected \n", client);
304 nc = client_lookup (client);
306 if ((NULL == client) || (NULL == nc))
312 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
317 GNUNET_SERVER_client_drop(nc->client);
318 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
325 static void handle_start (void *cls,
326 struct GNUNET_SERVER_Client * client,
327 const struct GNUNET_MessageHeader * message)
329 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", client);
331 struct GNUNET_NAMESTORE_Client * nc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Client));
333 GNUNET_SERVER_notification_context_add (snc, client);
334 GNUNET_CONTAINER_DLL_insert(client_head, client_tail, nc);
335 GNUNET_SERVER_client_keep (client);
336 GNUNET_SERVER_receive_done (client, GNUNET_OK);
339 struct LookupNameContext
341 struct GNUNET_NAMESTORE_Client *nc;
343 uint32_t record_type;
344 struct GNUNET_CRYPTO_ShortHashCode *zone;
348 void drop_iterator (void *cls,
349 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
350 struct GNUNET_TIME_Absolute expire,
353 const struct GNUNET_NAMESTORE_RecordData *rd,
354 const struct GNUNET_CRYPTO_RsaSignature *signature)
356 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
358 if (NULL != zone_key)
360 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_hash);
361 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleting zone `%s'\n", GNUNET_short_h2s (&zone_hash));
362 GSN_database->delete_zone (GSN_database->cls, &zone_hash);
366 (*stop) = GNUNET_YES;
372 handle_lookup_name_it (void *cls,
373 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
374 struct GNUNET_TIME_Absolute expire,
376 unsigned int rd_count,
377 const struct GNUNET_NAMESTORE_RecordData *rd,
378 const struct GNUNET_CRYPTO_RsaSignature *signature)
381 struct LookupNameContext *lnc = cls;
382 struct LookupNameResponseMessage *lnr_msg;
383 struct GNUNET_NAMESTORE_RecordData *rd_selected = NULL;
384 struct GNUNET_NAMESTORE_CryptoContainer *cc;
385 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
386 struct GNUNET_TIME_Absolute e;
387 struct GNUNET_CRYPTO_ShortHashCode zone_key_hash;
388 GNUNET_HashCode long_hash;
395 int copied_elements = 0;
396 int contains_signature = GNUNET_NO;
397 int authoritative = GNUNET_NO;
401 name_len = strlen(name) + 1;
403 /* count records to copy */
406 if (lnc->record_type != 0)
408 /* special record type needed */
409 for (c = 0; c < rd_count; c ++)
410 if (rd[c].record_type == lnc->record_type)
411 copied_elements++; /* found matching record */
412 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records with type %u for name `%s' in zone `%s'\n",
413 copied_elements, lnc->record_type, lnc->name, GNUNET_short_h2s(lnc->zone));
414 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
416 for (c = 0; c < rd_count; c ++)
418 if (rd[c].record_type == lnc->record_type)
420 /* found matching record */
421 memcpy (&rd_selected[copied_elements], &rd[c], sizeof (struct GNUNET_NAMESTORE_RecordData));
428 copied_elements = rd_count;
429 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
437 expire = GNUNET_TIME_UNIT_ZERO_ABS;
440 rd_ser_len = GNUNET_NAMESTORE_records_get_size(copied_elements, rd_selected);
441 char rd_ser[rd_ser_len];
442 GNUNET_NAMESTORE_records_serialize(copied_elements, rd_selected, rd_ser_len, rd_ser);
444 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records for name `%s' in zone `%s'\n",
445 copied_elements, lnc->name, GNUNET_short_h2s(lnc->zone));
447 if ((copied_elements == rd_count) && (NULL != signature))
448 contains_signature = GNUNET_YES; /* returning all records, so include signature */
450 contains_signature = GNUNET_NO; /* returning not all records, so do not include signature */
453 if ((NULL != zone_key) && (copied_elements == rd_count))
455 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
456 GNUNET_CRYPTO_short_hash_double (&zone_key_hash, &long_hash);
457 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
459 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &long_hash);
460 e = get_block_expiration_time(rd_count, rd);
461 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd, rd_count);
462 GNUNET_assert (signature_new != NULL);
463 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));
464 authoritative = GNUNET_YES;
467 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "I am not authoritative for name `%s' in zone `%s'\n",name, GNUNET_short_h2s(&zone_key_hash));
470 r_size = sizeof (struct LookupNameResponseMessage) +
471 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
475 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
476 lnr_msg = GNUNET_malloc (r_size);
477 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
478 lnr_msg->gns_header.header.size = ntohs (r_size);
479 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
480 lnr_msg->rd_count = htons (copied_elements);
481 lnr_msg->rd_len = htons (rd_ser_len);
482 lnr_msg->name_len = htons (name_len);
483 lnr_msg->expire = GNUNET_TIME_absolute_hton(get_block_expiration_time(copied_elements, rd_selected));
485 if (rd_selected != rd)
486 GNUNET_free (rd_selected);
488 if (zone_key != NULL)
489 lnr_msg->public_key = (*zone_key);
491 memset(&lnr_msg->public_key, '\0', sizeof (lnr_msg->public_key));
493 if (GNUNET_YES == authoritative)
494 { /* use new created signature */
495 lnr_msg->contains_sig = htons (GNUNET_YES);
496 GNUNET_assert (signature_new != NULL);
497 lnr_msg->signature = *signature_new;
498 GNUNET_free (signature_new);
500 else if (GNUNET_YES == contains_signature)
502 /* use existing signature */
503 lnr_msg->contains_sig = htons (GNUNET_YES);
504 GNUNET_assert (signature != NULL);
505 lnr_msg->signature = *signature;
509 /* use no signature */
510 memset (&lnr_msg->signature, '\0', sizeof (lnr_msg->signature));
513 name_tmp = (char *) &lnr_msg[1];
514 rd_tmp = &name_tmp[name_len];
516 memcpy (name_tmp, name, name_len);
517 memcpy (rd_tmp, rd_ser, rd_ser_len);
519 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
520 GNUNET_free (lnr_msg);
523 static void handle_lookup_name (void *cls,
524 struct GNUNET_SERVER_Client * client,
525 const struct GNUNET_MessageHeader * message)
527 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
528 struct LookupNameContext lnc;
529 struct GNUNET_NAMESTORE_Client *nc;
535 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
538 GNUNET_SERVER_receive_done (client, GNUNET_OK);
542 nc = client_lookup(client);
546 GNUNET_SERVER_receive_done (client, GNUNET_OK);
550 struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
551 rid = ntohl (ln_msg->gns_header.r_id);
552 name_len = ntohl (ln_msg->name_len);
553 type = ntohl (ln_msg->record_type);
555 if ((name_len == 0) || (name_len > 256))
558 GNUNET_SERVER_receive_done (client, GNUNET_OK);
562 name = (char *) &ln_msg[1];
563 if (name[name_len -1] != '\0')
566 GNUNET_SERVER_receive_done (client, GNUNET_OK);
571 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up all records for name `%s' in zone `%s'\n", name, GNUNET_short_h2s(&ln_msg->zone));
573 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));
575 /* do the actual lookup */
576 lnc.request_id = rid;
578 lnc.record_type = type;
580 lnc.zone = &ln_msg->zone;
581 GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, name, 0, &handle_lookup_name_it, &lnc);
583 GNUNET_SERVER_receive_done (client, GNUNET_OK);
586 static void handle_record_put (void *cls,
587 struct GNUNET_SERVER_Client * client,
588 const struct GNUNET_MessageHeader * message)
590 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_PUT");
591 struct GNUNET_NAMESTORE_Client *nc;
592 struct GNUNET_TIME_Absolute expire;
593 struct GNUNET_CRYPTO_RsaSignature *signature;
594 struct RecordPutResponseMessage rpr_msg;
603 int res = GNUNET_SYSERR;
605 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
608 GNUNET_SERVER_receive_done (client, GNUNET_OK);
612 nc = client_lookup (client);
616 GNUNET_SERVER_receive_done (client, GNUNET_OK);
620 struct RecordPutMessage * rp_msg = (struct RecordPutMessage *) message;
622 rid = ntohl (rp_msg->gns_header.r_id);
623 msg_size = ntohs (rp_msg->gns_header.header.size);
624 name_len = ntohs (rp_msg->name_len);
625 rd_count = ntohs (rp_msg->rd_count);
626 rd_ser_len = ntohs(rp_msg->rd_len);
628 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
631 GNUNET_SERVER_receive_done (client, GNUNET_OK);
635 if ((rd_count < 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
638 GNUNET_SERVER_receive_done (client, GNUNET_OK);
642 msg_size_exp = sizeof (struct RecordPutMessage) + name_len + rd_ser_len;
643 if (msg_size != msg_size_exp)
645 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
647 GNUNET_SERVER_receive_done (client, GNUNET_OK);
650 if ((name_len == 0) || (name_len > 256))
653 GNUNET_SERVER_receive_done (client, GNUNET_OK);
657 name = (char *) &rp_msg[1];
659 if (name[name_len -1] != '\0')
662 GNUNET_SERVER_receive_done (client, GNUNET_OK);
666 expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
667 signature = (struct GNUNET_CRYPTO_RsaSignature *) &rp_msg->signature;
669 rd_ser = &name[name_len];
670 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
671 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
672 if (res != GNUNET_OK)
678 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
679 GNUNET_CRYPTO_short_hash (&rp_msg->public_key, sizeof (rp_msg->public_key), &zone_hash);
681 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting %u record for name `%s' in zone `%s'\n", rd_count, name, GNUNET_short_h2s(&zone_hash));
683 /* Database operation */
684 res = GSN_database->put_records(GSN_database->cls,
691 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting record for name `%s': %s\n",
692 name, (res == GNUNET_OK) ? "OK" : "FAIL");
696 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_PUT_RESPONSE");
697 rpr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
698 rpr_msg.gns_header.header.size = htons (sizeof (struct RecordPutResponseMessage));
699 rpr_msg.gns_header.r_id = htonl (rid);
700 rpr_msg.op_result = htonl (res);
701 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rpr_msg, GNUNET_NO);
703 GNUNET_SERVER_receive_done (client, GNUNET_OK);
706 struct CreateRecordContext
708 struct GNUNET_NAMESTORE_RecordData *rd;
709 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
710 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey;
711 struct GNUNET_TIME_Absolute expire;
718 handle_create_record_it (void *cls,
719 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey,
720 struct GNUNET_TIME_Absolute expire,
722 unsigned int rd_count,
723 const struct GNUNET_NAMESTORE_RecordData *rd,
724 const struct GNUNET_CRYPTO_RsaSignature *signature)
726 struct CreateRecordContext * crc = cls;
727 struct GNUNET_NAMESTORE_RecordData *rd_new = NULL;
728 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
729 struct GNUNET_TIME_Absolute block_expiration;
731 int exist = GNUNET_SYSERR;
732 int update = GNUNET_NO;
734 int rd_count_new = 0;
736 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++)
741 if ((crc->rd->record_type == rd[c].record_type) &&
742 (crc->rd->data_size == rd[c].data_size) &&
743 (0 == memcmp (crc->rd->data, rd[c].data, rd[c].data_size)))
745 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found existing records for `%s' to update expiration date!\n", crc->name);
747 if (crc->rd->expiration.abs_value != rd[c].expiration.abs_value)
753 if (exist == GNUNET_SYSERR)
754 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New record does not exist for name `%s'!\n", crc->name);
756 if (exist == GNUNET_SYSERR)
758 rd_new = GNUNET_malloc ((rd_count+1) * sizeof (struct GNUNET_NAMESTORE_RecordData));
759 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
760 rd_count_new = rd_count + 1;
761 rd_new[rd_count] = *(crc->rd);
763 else if (update == GNUNET_NO)
765 /* Exact same record already exists */
766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No update for %s' record required!\n", crc->name);
770 else if (update == GNUNET_YES)
773 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating existing records for `%s'!\n", crc->name);
774 rd_new = GNUNET_malloc ((rd_count) * sizeof (struct GNUNET_NAMESTORE_RecordData));
775 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
776 rd_count_new = rd_count;
777 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating expiration from %llu to %llu!\n", rd_new[exist].expiration.abs_value, crc->rd->expiration.abs_value);
778 rd_new[exist].expiration = crc->rd->expiration;
781 block_expiration = GNUNET_TIME_absolute_max(crc->expire, expire);
782 if (block_expiration.abs_value != expire.abs_value)
783 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updated block expiration time\n");
785 memset (&dummy_signature, '\0', sizeof (dummy_signature));
787 /* Database operation */
788 GNUNET_assert ((rd_new != NULL) && (rd_count_new > 0));
789 res = GSN_database->put_records(GSN_database->cls,
790 (const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) crc->pubkey,
793 rd_count_new, rd_new,
795 GNUNET_break (GNUNET_OK == res);
796 if (res == GNUNET_OK)
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully put record for `%s' in database \n", crc->name);
799 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to put record for `%s' in database \n", crc->name);
803 GNUNET_free_non_null (rd_new);
807 /* failed to create the record */
808 crc->res = GNUNET_SYSERR;
811 /* database operations OK */
812 if (GNUNET_YES == update)
813 /* we updated an existing record */
814 crc->res = GNUNET_NO;
816 /* we created a new record */
817 crc->res = GNUNET_YES;
820 /* identical entry existed, so we did nothing */
821 crc->res = GNUNET_NO;
827 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Update result for name `%s' %u\n", crc->name, res);
831 static void handle_record_create (void *cls,
832 struct GNUNET_SERVER_Client * client,
833 const struct GNUNET_MessageHeader * message)
835 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_CREATE");
836 struct GNUNET_NAMESTORE_Client *nc;
837 struct GNUNET_NAMESTORE_CryptoContainer *cc;
838 struct CreateRecordContext crc;
839 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
840 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
841 struct RecordCreateResponseMessage rcr_msg;
842 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
843 GNUNET_HashCode long_hash;
855 int res = GNUNET_SYSERR;
856 crc.res = GNUNET_SYSERR;
858 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
861 GNUNET_SERVER_receive_done (client, GNUNET_OK);
865 nc = client_lookup(client);
869 GNUNET_SERVER_receive_done (client, GNUNET_OK);
873 struct RecordCreateMessage * rp_msg = (struct RecordCreateMessage *) message;
874 rid = ntohl (rp_msg->gns_header.r_id);
875 name_len = ntohs (rp_msg->name_len);
876 msg_size = ntohs (message->size);
877 rd_count = ntohs (rp_msg->rd_count);
878 rd_ser_len = ntohs (rp_msg->rd_len);
879 key_len = ntohs (rp_msg->pkey_len);
880 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
882 if (msg_size != msg_size_exp)
884 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
886 GNUNET_SERVER_receive_done (client, GNUNET_OK);
890 if ((name_len == 0) || (name_len > 256))
893 GNUNET_SERVER_receive_done (client, GNUNET_OK);
897 pkey_tmp = (char *) &rp_msg[1];
898 name_tmp = &pkey_tmp[key_len];
899 rd_ser = &name_tmp[name_len];
901 if (name_tmp[name_len -1] != '\0')
904 GNUNET_SERVER_receive_done (client, GNUNET_OK);
908 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
910 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
911 if ((res != GNUNET_OK) || (rd_count != 1))
917 /* Extracting and converting private key */
918 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
919 GNUNET_assert (pkey != NULL);
920 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
921 GNUNET_CRYPTO_short_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
922 GNUNET_CRYPTO_short_hash_double (&pubkey_hash, &long_hash);
924 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
926 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received new private key for zone `%s'\n",GNUNET_short_h2s(&pubkey_hash));
928 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
929 cc->privkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
930 cc->pubkey = GNUNET_malloc(sizeof (pub));
931 memcpy (cc->pubkey, &pub, sizeof(pub));
932 cc->zone = pubkey_hash;
933 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, cc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
936 crc.expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
937 crc.res = GNUNET_SYSERR;
943 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating record for name `%s' in zone `%s'\n", name_tmp, GNUNET_short_h2s(&pubkey_hash));
945 /* Get existing records for name */
946 res = GSN_database->iterate_records(GSN_database->cls, &pubkey_hash, name_tmp, 0, &handle_create_record_it, &crc);
947 if (res != GNUNET_SYSERR)
949 GNUNET_CRYPTO_rsa_key_free(pkey);
954 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
955 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
956 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
957 rcr_msg.gns_header.r_id = htonl (rid);
958 if ((GNUNET_OK == res) && (crc.res == GNUNET_YES))
959 rcr_msg.op_result = htonl (GNUNET_YES);
960 else if ((GNUNET_OK == res) && (crc.res == GNUNET_NO))
961 rcr_msg.op_result = htonl (GNUNET_NO);
963 rcr_msg.op_result = htonl (GNUNET_SYSERR);
964 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rcr_msg, GNUNET_NO);
966 GNUNET_SERVER_receive_done (client, GNUNET_OK);
970 struct RemoveRecordContext
972 struct GNUNET_NAMESTORE_RecordData *rd;
973 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
978 handle_record_remove_it (void *cls,
979 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
980 struct GNUNET_TIME_Absolute expire,
982 unsigned int rd_count,
983 const struct GNUNET_NAMESTORE_RecordData *rd,
984 const struct GNUNET_CRYPTO_RsaSignature *signature)
986 struct RemoveRecordContext *rrc = cls;
990 unsigned int rd_count_new;
992 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s 'currently has %u records\n", name, rd_count);
996 /* Could not find record to remove */
1001 /* Find record to remove */
1002 found = GNUNET_SYSERR;
1003 for (c = 0; c < rd_count; c++)
1005 if ((rd[c].expiration.abs_value == rrc->rd->expiration.abs_value) &&
1006 (rd[c].flags == rrc->rd->flags) &&
1007 (rd[c].record_type == rrc->rd->record_type) &&
1008 (rd[c].data_size == rrc->rd->data_size) &&
1009 (0 == memcmp (rd[c].data, rrc->rd->data, rrc->rd->data_size)))
1011 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found record to remove!\n", rd_count);
1016 if (GNUNET_SYSERR == found)
1018 /* Could not find record to remove */
1023 rd_count_new = rd_count -1;
1024 struct GNUNET_NAMESTORE_RecordData rd_new[rd_count_new];
1026 unsigned int c2 = 0;
1027 for (c = 0; c < rd_count; c++)
1031 GNUNET_assert (c2 < rd_count_new);
1037 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s' now has %u records\n", name, rd_count_new);
1039 /* Create dummy signature */
1040 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
1041 memset (&dummy_signature, '\0', sizeof (dummy_signature));
1045 res = GSN_database->put_records(GSN_database->cls,
1049 rd_count_new, rd_new,
1051 if (GNUNET_OK != res)
1053 /* Could put records into database */
1061 static void handle_record_remove (void *cls,
1062 struct GNUNET_SERVER_Client * client,
1063 const struct GNUNET_MessageHeader * message)
1065 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
1066 struct GNUNET_NAMESTORE_Client *nc;
1067 struct RecordRemoveResponseMessage rrr_msg;
1068 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
1069 struct GNUNET_NAMESTORE_CryptoContainer *cc = NULL;
1070 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
1071 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
1072 GNUNET_HashCode long_hash;
1073 char * pkey_tmp = NULL;
1074 char * name_tmp = NULL;
1075 char * rd_ser = NULL;
1077 size_t name_len = 0;
1078 size_t rd_ser_len = 0;
1079 size_t msg_size = 0;
1080 size_t msg_size_exp = 0;
1084 int res = GNUNET_SYSERR;
1086 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
1088 GNUNET_break_op (0);
1089 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1093 nc = client_lookup(client);
1096 GNUNET_break_op (0);
1097 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1101 struct RecordRemoveMessage * rr_msg = (struct RecordRemoveMessage *) message;
1102 rid = ntohl (rr_msg->gns_header.r_id);
1103 name_len = ntohs (rr_msg->name_len);
1104 rd_ser_len = ntohs (rr_msg->rd_len);
1105 rd_count = ntohs (rr_msg->rd_count);
1106 key_len = ntohs (rr_msg->pkey_len);
1107 msg_size = ntohs (message->size);
1109 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1111 GNUNET_break_op (0);
1112 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1116 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
1118 GNUNET_break_op (0);
1119 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1123 msg_size_exp = sizeof (struct RecordRemoveMessage) + key_len + name_len + rd_ser_len;
1124 if (msg_size != msg_size_exp)
1126 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
1127 GNUNET_break_op (0);
1128 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1132 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
1134 GNUNET_break_op (0);
1135 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1139 pkey_tmp = (char *) &rr_msg[1];
1140 name_tmp = &pkey_tmp[key_len];
1141 rd_ser = &name_tmp[name_len];
1144 if ((name_len == 0) || (name_len > 256))
1146 GNUNET_break_op (0);
1147 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1151 if (name_tmp[name_len -1] != '\0')
1153 GNUNET_break_op (0);
1154 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1158 /* Extracting and converting private key */
1159 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1160 GNUNET_assert (pkey != NULL);
1161 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
1162 GNUNET_CRYPTO_short_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
1163 GNUNET_CRYPTO_short_hash_double (&pubkey_hash, &long_hash);
1165 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
1167 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received new private key for zone `%s'\n",GNUNET_short_h2s(&pubkey_hash));
1168 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1169 cc->privkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1170 cc->pubkey = GNUNET_malloc(sizeof (pub));
1171 memcpy (cc->pubkey, &pub, sizeof(pub));
1172 cc->zone = pubkey_hash;
1174 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, cc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1177 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
1178 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
1179 if ((res != GNUNET_OK) || (rd_count != 1))
1181 GNUNET_break_op (0);
1185 struct RemoveRecordContext rrc;
1189 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s' in zone `%s'\n", name_tmp, GNUNET_short_h2s(&pubkey_hash));
1191 /* Database operation */
1192 res = GSN_database->iterate_records (GSN_database->cls,
1196 handle_record_remove_it, &rrc);
1198 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s': %s\n",
1199 name_tmp, (rrc.op_res == 0) ? "OK" : "FAIL");
1204 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_REMOVE_RESPONSE");
1205 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
1206 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
1207 rrr_msg.gns_header.r_id = htonl (rid);
1208 rrr_msg.op_result = htonl (res);
1209 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rrr_msg, GNUNET_NO);
1211 GNUNET_CRYPTO_rsa_key_free (pkey);
1213 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1217 struct ZoneToNameCtx
1219 struct GNUNET_NAMESTORE_Client *nc;
1224 handle_zone_to_name_it (void *cls,
1225 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1226 struct GNUNET_TIME_Absolute expire,
1228 unsigned int rd_count,
1229 const struct GNUNET_NAMESTORE_RecordData *rd,
1230 const struct GNUNET_CRYPTO_RsaSignature *signature)
1232 struct ZoneToNameCtx * ztn_ctx = cls;
1233 struct ZoneToNameResponseMessage *ztnr_msg;
1234 int16_t res = GNUNET_SYSERR;
1235 uint16_t name_len = 0;
1236 uint16_t rd_ser_len = 0 ;
1237 int32_t contains_sig = 0;
1238 size_t msg_size = 0;
1240 char *rd_ser = NULL;
1245 if ((zone_key != NULL) && (name != NULL))
1248 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found results: name is `%s', has %u records\n", name, rd_count);
1250 name_len = strlen (name) +1;
1254 /* no result found */
1255 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found no results\n");
1262 rd_ser_len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
1263 rd_ser = GNUNET_malloc (rd_ser_len);
1264 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1269 if (signature != NULL)
1270 contains_sig = GNUNET_YES;
1272 contains_sig = GNUNET_NO;
1276 msg_size = sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len + contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature);
1277 ztnr_msg = GNUNET_malloc (msg_size);
1279 name_tmp = (char *) &ztnr_msg[1];
1280 rd_tmp = &name_tmp[name_len];
1281 sig_tmp = &rd_tmp[rd_ser_len];
1283 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_TO_NAME_RESPONSE");
1284 ztnr_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE);
1285 ztnr_msg->gns_header.header.size = htons (msg_size);
1286 ztnr_msg->gns_header.r_id = htonl (ztn_ctx->rid);
1287 ztnr_msg->res = htons (res);
1288 ztnr_msg->rd_len = htons (rd_ser_len);
1289 ztnr_msg->rd_count = htons (rd_count);
1290 ztnr_msg->name_len = htons (name_len);
1291 ztnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
1292 if (zone_key != NULL)
1293 ztnr_msg->zone_key = *zone_key;
1295 memset (&ztnr_msg->zone_key, '\0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1297 if ((name_len > 0) && (name != NULL))
1298 memcpy (name_tmp, name, name_len);
1300 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);
1301 if ((rd_ser_len > 0) && (rd_ser != NULL))
1302 memcpy (rd_tmp, rd_ser, rd_ser_len);
1303 if ((GNUNET_YES == contains_sig) && (signature != NULL))
1304 memcpy (sig_tmp, signature, contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature));
1306 GNUNET_SERVER_notification_context_unicast (snc, ztn_ctx->nc->client, (const struct GNUNET_MessageHeader *) ztnr_msg, GNUNET_NO);
1307 GNUNET_free (ztnr_msg);
1308 GNUNET_free_non_null (rd_ser);
1312 static void handle_zone_to_name (void *cls,
1313 struct GNUNET_SERVER_Client * client,
1314 const struct GNUNET_MessageHeader * message)
1316 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_TO_NAME");
1317 struct GNUNET_NAMESTORE_Client *nc;
1318 struct ZoneToNameCtx ztn_ctx;
1319 size_t msg_size = 0;
1322 if (ntohs (message->size) != sizeof (struct ZoneToNameMessage))
1324 GNUNET_break_op (0);
1325 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1329 nc = client_lookup(client);
1332 GNUNET_break_op (0);
1333 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1337 struct ZoneToNameMessage *ztn_msg = (struct ZoneToNameMessage *) message;
1339 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1341 GNUNET_break_op (0);
1342 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1346 rid = ntohl (ztn_msg->gns_header.r_id);
1351 char * z_tmp = strdup (GNUNET_short_h2s (&ztn_msg->zone));
1352 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up name for zone `%s' in zone `%s'\n",
1354 GNUNET_short_h2s (&ztn_msg->value_zone));
1355 GNUNET_free (z_tmp);
1357 GSN_database->zone_to_name (GSN_database->cls, &ztn_msg->zone, &ztn_msg->value_zone, &handle_zone_to_name_it, &ztn_ctx);
1359 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1362 struct ZoneIterationProcResult
1365 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
1368 struct GNUNET_CRYPTO_RsaSignature signature;
1369 struct GNUNET_TIME_Absolute expire;
1379 void zone_iteration_proc (void *cls,
1380 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1381 struct GNUNET_TIME_Absolute expire,
1383 unsigned int rd_count,
1384 const struct GNUNET_NAMESTORE_RecordData *rd,
1385 const struct GNUNET_CRYPTO_RsaSignature *signature)
1387 struct GNUNET_NAMESTORE_ZoneIteration *zi = cls;
1388 struct GNUNET_NAMESTORE_Client *nc = zi->client;
1389 struct GNUNET_NAMESTORE_CryptoContainer * cc;
1390 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
1391 struct GNUNET_TIME_Absolute e;
1392 struct GNUNET_CRYPTO_ShortHashCode zone_key_hash;
1393 GNUNET_HashCode long_hash;
1394 int authoritative = GNUNET_NO;
1396 if ((zone_key == NULL) && (name == NULL))
1398 struct ZoneIterationResponseMessage zir_msg;
1399 if (zi->has_zone == GNUNET_YES)
1400 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for zone `%s'\n", GNUNET_short_h2s(&zi->zone));
1402 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for all zones\n");
1404 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending empty `%s' message\n", "ZONE_ITERATION_RESPONSE");
1405 zir_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1406 zir_msg.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
1407 zir_msg.gns_header.r_id = htonl(zi->request_id);
1408 zir_msg.expire = GNUNET_TIME_absolute_hton(GNUNET_TIME_absolute_get_zero());
1409 zir_msg.name_len = htons (0);
1410 zir_msg.reserved = htons (0);
1411 zir_msg.rd_count = htons (0);
1412 zir_msg.rd_len = htons (0);
1413 memset (&zir_msg.public_key, '\0', sizeof (zir_msg.public_key));
1414 memset (&zir_msg.signature, '\0', sizeof (zir_msg.signature));
1415 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &zir_msg, GNUNET_NO);
1417 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing zone iterator\n");
1418 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, zi);
1424 struct ZoneIterationResponseMessage *zir_msg;
1425 if (zi->has_zone == GNUNET_YES)
1426 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over zone `%s'\n",
1427 name, GNUNET_short_h2s(&zi->zone));
1428 if (zi->has_zone == GNUNET_NO)
1429 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over all zones\n",
1437 name_len = strlen (name) +1;
1439 rd_ser_len = GNUNET_NAMESTORE_records_get_size(rd_count, rd);
1440 char rd_ser[rd_ser_len];
1441 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1442 msg_size = sizeof (struct ZoneIterationResponseMessage) + name_len + rd_ser_len;
1443 zir_msg = GNUNET_malloc(msg_size);
1445 name_tmp = (char *) &zir_msg[1];
1446 rd_tmp = &name_tmp[name_len];
1448 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
1449 GNUNET_CRYPTO_short_hash_double(&zone_key_hash, &long_hash);
1450 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
1452 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &long_hash);
1453 e = get_block_expiration_time(rd_count, rd);
1455 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd, rd_count);
1456 GNUNET_assert (signature_new != NULL);
1457 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);
1458 authoritative = GNUNET_YES;
1462 zir_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1463 zir_msg->gns_header.header.size = htons (msg_size);
1464 zir_msg->gns_header.r_id = htonl(zi->request_id);
1465 zir_msg->expire = GNUNET_TIME_absolute_hton(expire);
1466 zir_msg->reserved = htons (0);
1467 zir_msg->name_len = htons (name_len);
1468 zir_msg->rd_count = htons (rd_count);
1469 zir_msg->rd_len = htons (rd_ser_len);
1470 if ((GNUNET_YES == authoritative) && (NULL != signature_new))
1472 zir_msg->signature = *signature_new;
1473 GNUNET_free (signature_new);
1476 zir_msg->signature = *signature;
1477 GNUNET_assert (NULL != zone_key);
1478 if (zone_key != NULL)
1479 zir_msg->public_key = *zone_key;
1480 memcpy (name_tmp, name, name_len);
1481 memcpy (rd_tmp, rd_ser, rd_ser_len);
1483 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with size %u\n", "ZONE_ITERATION_RESPONSE", msg_size);
1484 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) zir_msg, GNUNET_NO);
1485 GNUNET_free (zir_msg);
1489 static void handle_iteration_start (void *cls,
1490 struct GNUNET_SERVER_Client * client,
1491 const struct GNUNET_MessageHeader * message)
1493 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
1495 struct ZoneIterationStartMessage * zis_msg = (struct ZoneIterationStartMessage *) message;
1496 struct GNUNET_NAMESTORE_Client *nc;
1497 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1499 nc = client_lookup(client);
1502 GNUNET_break_op (0);
1503 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1507 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
1508 zi->request_id = ntohl (zis_msg->gns_header.r_id);
1511 zi->zone = zis_msg->zone;
1513 struct GNUNET_CRYPTO_ShortHashCode dummy;
1514 struct GNUNET_CRYPTO_ShortHashCode *zone_tmp;
1515 memset (&dummy, '\0', sizeof (dummy));
1516 if (0 == memcmp (&dummy, &zis_msg->zone, sizeof (dummy)))
1518 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over all zones\n");
1519 zi->has_zone = GNUNET_NO;
1524 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over zone `%s'\n", GNUNET_short_h2s (&zis_msg->zone));
1525 zi->has_zone = GNUNET_YES;
1526 zone_tmp = &zis_msg->zone;
1529 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
1531 GSN_database->iterate_records (GSN_database->cls, zone_tmp , NULL, zi->offset , &zone_iteration_proc, zi);
1532 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1535 static void handle_iteration_stop (void *cls,
1536 struct GNUNET_SERVER_Client * client,
1537 const struct GNUNET_MessageHeader * message)
1539 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_STOP");
1541 struct GNUNET_NAMESTORE_Client *nc;
1542 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1543 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1546 nc = client_lookup(client);
1549 GNUNET_break_op (0);
1550 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1554 rid = ntohl (zis_msg->gns_header.r_id);
1555 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1557 if (zi->request_id == rid)
1562 GNUNET_break_op (0);
1563 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1567 GNUNET_CONTAINER_DLL_remove(nc->op_head, nc->op_tail, zi);
1568 if (GNUNET_YES == zi->has_zone)
1569 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration for zone `%s'\n", GNUNET_short_h2s (&zi->zone));
1571 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration all zones\n");
1574 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1577 static void handle_iteration_next (void *cls,
1578 struct GNUNET_SERVER_Client * client,
1579 const struct GNUNET_MessageHeader * message)
1581 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
1583 struct GNUNET_NAMESTORE_Client *nc;
1584 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1585 struct GNUNET_CRYPTO_ShortHashCode *zone_tmp;
1586 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1589 nc = client_lookup(client);
1592 GNUNET_break_op (0);
1593 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1597 rid = ntohl (zis_msg->gns_header.r_id);
1598 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1600 if (zi->request_id == rid)
1605 GNUNET_break_op (0);
1606 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1610 if (GNUNET_YES == zi->has_zone)
1611 zone_tmp = &zi->zone;
1616 GSN_database->iterate_records (GSN_database->cls, zone_tmp, NULL, zi->offset , &zone_iteration_proc, zi);
1617 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1620 int zonekey_file_it (void *cls, const char *filename)
1622 GNUNET_HashCode long_hash;
1624 if ((filename != NULL) && (NULL != strstr(filename, ".zkey")))
1626 struct GNUNET_CRYPTO_RsaPrivateKey * privkey;
1627 struct GNUNET_NAMESTORE_CryptoContainer *c;
1628 privkey = GNUNET_CRYPTO_rsa_key_create_from_file(filename);
1629 if (privkey == NULL)
1632 c = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1633 c->pubkey = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1634 c->privkey = privkey;
1635 GNUNET_CRYPTO_rsa_key_get_public(privkey, c->pubkey);
1636 GNUNET_CRYPTO_short_hash(c->pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &c->zone);
1638 //GNUNET_CRYPTO_short_hash_to_enc (&name_hase, &name_enc);
1639 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found zonefile for zone `%s'\n", GNUNET_short_h2s (&c->zone));
1640 GNUNET_CRYPTO_short_hash_double (&c->zone, &long_hash);
1641 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, c, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1649 * Process template requests.
1651 * @param cls closure
1652 * @param server the initialized server
1653 * @param cfg configuration to use
1656 run (void *cls, struct GNUNET_SERVER_Handle *server,
1657 const struct GNUNET_CONFIGURATION_Handle *cfg)
1661 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
1663 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1664 {&handle_start, NULL,
1665 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
1666 {&handle_lookup_name, NULL,
1667 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
1668 {&handle_record_put, NULL,
1669 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
1670 {&handle_record_create, NULL,
1671 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
1672 {&handle_record_remove, NULL,
1673 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
1674 {&handle_zone_to_name, NULL,
1675 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, 0},
1676 {&handle_iteration_start, NULL,
1677 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage)},
1678 {&handle_iteration_next, NULL,
1679 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, 0},
1680 {&handle_iteration_stop, NULL,
1681 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, 0},
1687 /* Load private keys from disk */
1689 GNUNET_CONFIGURATION_get_value_filename (cfg, "namestore", "zonefile_directory",
1690 &zonefile_directory))
1692 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No directory to load zonefiles specified in configuration\n"));
1693 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1697 if (GNUNET_NO == GNUNET_DISK_file_test (zonefile_directory))
1699 if (GNUNET_SYSERR == GNUNET_DISK_directory_create (zonefile_directory))
1701 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Creating directory `%s' for zone files failed!\n"), zonefile_directory);
1702 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1705 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created directory `%s' for zone files\n", zonefile_directory);
1708 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Scanning directory `%s' for zone files\n", zonefile_directory);
1709 zonekeys = GNUNET_CONTAINER_multihashmap_create (10);
1710 GNUNET_DISK_directory_scan (zonefile_directory, zonekey_file_it, &counter);
1711 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u zone files\n", counter);
1713 /* Loading database plugin */
1715 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
1717 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
1719 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
1720 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
1721 GNUNET_free (database);
1722 if (GSN_database == NULL)
1724 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n",
1726 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1730 /* Configuring server handles */
1731 GNUNET_SERVER_add_handlers (server, handlers);
1732 snc = GNUNET_SERVER_notification_context_create (server, 16);
1733 GNUNET_SERVER_disconnect_notify (server,
1734 &client_disconnect_notification,
1737 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
1744 * The main function for the template service.
1746 * @param argc number of arguments from the command line
1747 * @param argv command line arguments
1748 * @return 0 ok, 1 on error
1751 main (int argc, char *const *argv)
1753 return (GNUNET_OK ==
1754 GNUNET_SERVICE_run (argc, argv, "namestore",
1755 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1758 /* end of gnunet-service-namestore.c */