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;
197 if (c->filename != NULL)
198 write_key_to_file(c->filename, c);
201 GNUNET_asprintf(&c->filename, "%s/%s.zkey", zonefile_directory, GNUNET_short_h2s (&c->zone));
202 write_key_to_file(c->filename, c);
206 GNUNET_CONTAINER_multihashmap_remove (zonekeys, key, value);
207 GNUNET_CRYPTO_rsa_key_free (c->privkey);
208 GNUNET_free (c->pubkey);
209 GNUNET_free (c->filename);
216 struct GNUNET_TIME_Absolute
217 get_block_expiration_time (unsigned int rd_count, const struct GNUNET_NAMESTORE_RecordData *rd)
220 struct GNUNET_TIME_Absolute expire = GNUNET_TIME_absolute_get_forever();
222 return GNUNET_TIME_absolute_get_zero();
223 for (c = 0; c < rd_count; c++)
225 if (rd[c].expiration.abs_value < expire.abs_value)
226 expire = rd[c].expiration;
232 * Task run during shutdown.
238 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
240 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopping namestore service\n");
241 struct GNUNET_NAMESTORE_ZoneIteration * no;
242 struct GNUNET_NAMESTORE_ZoneIteration * tmp;
243 struct GNUNET_NAMESTORE_Client * nc;
244 struct GNUNET_NAMESTORE_Client * next;
246 GNUNET_SERVER_notification_context_destroy (snc);
248 GNUNET_CONTAINER_multihashmap_iterate(zonekeys, &zone_to_disk_it, NULL);
249 GNUNET_CONTAINER_multihashmap_destroy(zonekeys);
251 for (nc = client_head; nc != NULL; nc = next)
254 for (no = nc->op_head; no != NULL; no = tmp)
256 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
260 GNUNET_SERVER_client_drop(nc->client);
261 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
265 GNUNET_break (NULL == GNUNET_PLUGIN_unload (db_lib_name, GSN_database));
266 GNUNET_free (db_lib_name);
267 GNUNET_free_non_null(zonefile_directory);
270 static struct GNUNET_NAMESTORE_Client *
271 client_lookup (struct GNUNET_SERVER_Client *client)
273 struct GNUNET_NAMESTORE_Client * nc;
275 GNUNET_assert (NULL != client);
277 for (nc = client_head; nc != NULL; nc = nc->next)
279 if (client == nc->client)
286 * Called whenever a client is disconnected. Frees our
287 * resources associated with that client.
290 * @param client identification of the client
293 client_disconnect_notification (void *cls, struct GNUNET_SERVER_Client *client)
295 struct GNUNET_NAMESTORE_ZoneIteration * no;
296 struct GNUNET_NAMESTORE_Client * nc;
300 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected \n", client);
302 nc = client_lookup (client);
304 if ((NULL == client) || (NULL == nc))
310 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
315 GNUNET_SERVER_client_drop(nc->client);
316 GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
323 static void handle_start (void *cls,
324 struct GNUNET_SERVER_Client * client,
325 const struct GNUNET_MessageHeader * message)
327 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", client);
329 struct GNUNET_NAMESTORE_Client * nc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Client));
331 GNUNET_SERVER_notification_context_add (snc, client);
332 GNUNET_CONTAINER_DLL_insert(client_head, client_tail, nc);
333 GNUNET_SERVER_client_keep (client);
334 GNUNET_SERVER_receive_done (client, GNUNET_OK);
337 struct LookupNameContext
339 struct GNUNET_NAMESTORE_Client *nc;
341 uint32_t record_type;
342 struct GNUNET_CRYPTO_ShortHashCode *zone;
346 void drop_iterator (void *cls,
347 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
348 struct GNUNET_TIME_Absolute expire,
351 const struct GNUNET_NAMESTORE_RecordData *rd,
352 const struct GNUNET_CRYPTO_RsaSignature *signature)
354 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
356 if (NULL != zone_key)
358 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_hash);
359 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleting zone `%s'\n", GNUNET_short_h2s (&zone_hash));
360 GSN_database->delete_zone (GSN_database->cls, &zone_hash);
364 (*stop) = GNUNET_YES;
370 handle_lookup_name_it (void *cls,
371 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
372 struct GNUNET_TIME_Absolute expire,
374 unsigned int rd_count,
375 const struct GNUNET_NAMESTORE_RecordData *rd,
376 const struct GNUNET_CRYPTO_RsaSignature *signature)
379 struct LookupNameContext *lnc = cls;
380 struct LookupNameResponseMessage *lnr_msg;
381 struct GNUNET_NAMESTORE_RecordData *rd_selected = NULL;
382 struct GNUNET_NAMESTORE_CryptoContainer *cc;
383 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
384 struct GNUNET_TIME_Absolute e;
385 struct GNUNET_CRYPTO_ShortHashCode zone_key_hash;
386 GNUNET_HashCode long_hash;
393 int copied_elements = 0;
394 int contains_signature = GNUNET_NO;
395 int authoritative = GNUNET_NO;
399 name_len = strlen(name) + 1;
401 /* count records to copy */
404 if (lnc->record_type != 0)
406 /* special record type needed */
407 for (c = 0; c < rd_count; c ++)
408 if (rd[c].record_type == lnc->record_type)
409 copied_elements++; /* found matching record */
410 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records with type %u for name `%s' in zone `%s'\n",
411 copied_elements, lnc->record_type, lnc->name, GNUNET_short_h2s(lnc->zone));
412 rd_selected = GNUNET_malloc (copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData));
414 for (c = 0; c < rd_count; c ++)
416 if (rd[c].record_type == lnc->record_type)
418 /* found matching record */
419 memcpy (&rd_selected[copied_elements], &rd[c], sizeof (struct GNUNET_NAMESTORE_RecordData));
426 copied_elements = rd_count;
427 rd_selected = (struct GNUNET_NAMESTORE_RecordData *) rd;
435 expire = GNUNET_TIME_UNIT_ZERO_ABS;
438 rd_ser_len = GNUNET_NAMESTORE_records_get_size(copied_elements, rd_selected);
439 char rd_ser[rd_ser_len];
440 GNUNET_NAMESTORE_records_serialize(copied_elements, rd_selected, rd_ser_len, rd_ser);
442 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u records for name `%s' in zone `%s'\n",
443 copied_elements, lnc->name, GNUNET_short_h2s(lnc->zone));
445 if ((copied_elements == rd_count) && (NULL != signature))
446 contains_signature = GNUNET_YES; /* returning all records, so include signature */
448 contains_signature = GNUNET_NO; /* returning not all records, so do not include signature */
451 if ((NULL != zone_key) && (copied_elements == rd_count))
453 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
454 GNUNET_CRYPTO_short_hash_double (&zone_key_hash, &long_hash);
455 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
457 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &long_hash);
458 e = get_block_expiration_time(rd_count, rd);
459 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd, rd_count);
460 GNUNET_assert (signature_new != NULL);
461 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));
462 authoritative = GNUNET_YES;
465 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "I am not authoritative for name `%s' in zone `%s'\n",name, GNUNET_short_h2s(&zone_key_hash));
468 r_size = sizeof (struct LookupNameResponseMessage) +
469 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
473 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
474 lnr_msg = GNUNET_malloc (r_size);
475 lnr_msg->gns_header.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
476 lnr_msg->gns_header.header.size = ntohs (r_size);
477 lnr_msg->gns_header.r_id = htonl (lnc->request_id);
478 lnr_msg->rd_count = htons (copied_elements);
479 lnr_msg->rd_len = htons (rd_ser_len);
480 lnr_msg->name_len = htons (name_len);
481 lnr_msg->expire = GNUNET_TIME_absolute_hton(get_block_expiration_time(copied_elements, rd_selected));
483 if (rd_selected != rd)
484 GNUNET_free (rd_selected);
486 if (zone_key != NULL)
487 lnr_msg->public_key = (*zone_key);
489 memset(&lnr_msg->public_key, '\0', sizeof (lnr_msg->public_key));
491 if (GNUNET_YES == authoritative)
492 { /* use new created signature */
493 lnr_msg->contains_sig = htons (GNUNET_YES);
494 GNUNET_assert (signature_new != NULL);
495 lnr_msg->signature = *signature_new;
496 GNUNET_free (signature_new);
498 else if (GNUNET_YES == contains_signature)
500 /* use existing signature */
501 lnr_msg->contains_sig = htons (GNUNET_YES);
502 GNUNET_assert (signature != NULL);
503 lnr_msg->signature = *signature;
507 /* use no signature */
508 memset (&lnr_msg->signature, '\0', sizeof (lnr_msg->signature));
511 name_tmp = (char *) &lnr_msg[1];
512 rd_tmp = &name_tmp[name_len];
514 memcpy (name_tmp, name, name_len);
515 memcpy (rd_tmp, rd_ser, rd_ser_len);
517 GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
518 GNUNET_free (lnr_msg);
521 static void handle_lookup_name (void *cls,
522 struct GNUNET_SERVER_Client * client,
523 const struct GNUNET_MessageHeader * message)
525 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
526 struct LookupNameContext lnc;
527 struct GNUNET_NAMESTORE_Client *nc;
533 if (ntohs (message->size) < sizeof (struct LookupNameMessage))
536 GNUNET_SERVER_receive_done (client, GNUNET_OK);
540 nc = client_lookup(client);
544 GNUNET_SERVER_receive_done (client, GNUNET_OK);
548 struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
549 rid = ntohl (ln_msg->gns_header.r_id);
550 name_len = ntohl (ln_msg->name_len);
551 type = ntohl (ln_msg->record_type);
553 if ((name_len == 0) || (name_len > 256))
556 GNUNET_SERVER_receive_done (client, GNUNET_OK);
560 name = (char *) &ln_msg[1];
561 if (name[name_len -1] != '\0')
564 GNUNET_SERVER_receive_done (client, GNUNET_OK);
569 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up all records for name `%s' in zone `%s'\n", name, GNUNET_short_h2s(&ln_msg->zone));
571 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));
573 /* do the actual lookup */
574 lnc.request_id = rid;
576 lnc.record_type = type;
578 lnc.zone = &ln_msg->zone;
579 GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, name, 0, &handle_lookup_name_it, &lnc);
581 GNUNET_SERVER_receive_done (client, GNUNET_OK);
584 static void handle_record_put (void *cls,
585 struct GNUNET_SERVER_Client * client,
586 const struct GNUNET_MessageHeader * message)
588 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_PUT");
589 struct GNUNET_NAMESTORE_Client *nc;
590 struct GNUNET_TIME_Absolute expire;
591 struct GNUNET_CRYPTO_RsaSignature *signature;
592 struct RecordPutResponseMessage rpr_msg;
601 int res = GNUNET_SYSERR;
603 if (ntohs (message->size) < sizeof (struct RecordPutMessage))
606 GNUNET_SERVER_receive_done (client, GNUNET_OK);
610 nc = client_lookup (client);
614 GNUNET_SERVER_receive_done (client, GNUNET_OK);
618 struct RecordPutMessage * rp_msg = (struct RecordPutMessage *) message;
620 rid = ntohl (rp_msg->gns_header.r_id);
621 msg_size = ntohs (rp_msg->gns_header.header.size);
622 name_len = ntohs (rp_msg->name_len);
623 rd_count = ntohs (rp_msg->rd_count);
624 rd_ser_len = ntohs(rp_msg->rd_len);
626 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
629 GNUNET_SERVER_receive_done (client, GNUNET_OK);
633 if ((rd_count < 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
636 GNUNET_SERVER_receive_done (client, GNUNET_OK);
640 msg_size_exp = sizeof (struct RecordPutMessage) + name_len + rd_ser_len;
641 if (msg_size != msg_size_exp)
643 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
645 GNUNET_SERVER_receive_done (client, GNUNET_OK);
648 if ((name_len == 0) || (name_len > 256))
651 GNUNET_SERVER_receive_done (client, GNUNET_OK);
655 name = (char *) &rp_msg[1];
657 if (name[name_len -1] != '\0')
660 GNUNET_SERVER_receive_done (client, GNUNET_OK);
664 expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
665 signature = (struct GNUNET_CRYPTO_RsaSignature *) &rp_msg->signature;
667 rd_ser = &name[name_len];
668 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
669 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
670 if (res != GNUNET_OK)
676 struct GNUNET_CRYPTO_ShortHashCode zone_hash;
677 GNUNET_CRYPTO_short_hash (&rp_msg->public_key, sizeof (rp_msg->public_key), &zone_hash);
679 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting %u record for name `%s' in zone `%s'\n", rd_count, name, GNUNET_short_h2s(&zone_hash));
681 /* Database operation */
682 res = GSN_database->put_records(GSN_database->cls,
689 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting record for name `%s': %s\n",
690 name, (res == GNUNET_OK) ? "OK" : "FAIL");
694 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_PUT_RESPONSE");
695 rpr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT_RESPONSE);
696 rpr_msg.gns_header.header.size = htons (sizeof (struct RecordPutResponseMessage));
697 rpr_msg.gns_header.r_id = htonl (rid);
698 rpr_msg.op_result = htonl (res);
699 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rpr_msg, GNUNET_NO);
701 GNUNET_SERVER_receive_done (client, GNUNET_OK);
704 struct CreateRecordContext
706 struct GNUNET_NAMESTORE_RecordData *rd;
707 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
708 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey;
709 struct GNUNET_TIME_Absolute expire;
716 handle_create_record_it (void *cls,
717 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *pubkey,
718 struct GNUNET_TIME_Absolute expire,
720 unsigned int rd_count,
721 const struct GNUNET_NAMESTORE_RecordData *rd,
722 const struct GNUNET_CRYPTO_RsaSignature *signature)
724 struct CreateRecordContext * crc = cls;
725 struct GNUNET_NAMESTORE_RecordData *rd_new = NULL;
726 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
727 struct GNUNET_TIME_Absolute block_expiration;
729 int exist = GNUNET_SYSERR;
730 int update = GNUNET_NO;
732 int rd_count_new = 0;
734 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u existing records for `%s'\n", rd_count, crc->name);
736 for (c = 0; c < rd_count; c++)
739 if ((crc->rd->record_type == rd[c].record_type) &&
740 (crc->rd->data_size == rd[c].data_size) &&
741 (0 == memcmp (crc->rd->data, rd[c].data, rd[c].data_size)))
743 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found existing records for `%s' to update expiration date!\n", crc->name);
745 if (crc->rd->expiration.abs_value != rd[c].expiration.abs_value)
751 if (exist == GNUNET_SYSERR)
752 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New record does not exist for name `%s'!\n", crc->name);
754 if (exist == GNUNET_SYSERR)
756 rd_new = GNUNET_malloc ((rd_count+1) * sizeof (struct GNUNET_NAMESTORE_RecordData));
757 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
758 rd_count_new = rd_count + 1;
759 rd_new[rd_count] = *(crc->rd);
761 else if (update == GNUNET_NO)
763 /* Exact same record already exists */
764 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No update for %s' record required!\n", crc->name);
768 else if (update == GNUNET_YES)
771 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating existing records for `%s'!\n", crc->name);
772 rd_new = GNUNET_malloc ((rd_count) * sizeof (struct GNUNET_NAMESTORE_RecordData));
773 memcpy (rd_new, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
774 rd_count_new = rd_count;
775 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating expiration from %llu to %llu!\n", rd_new[exist].expiration.abs_value, crc->rd->expiration.abs_value);
776 rd_new[exist].expiration = crc->rd->expiration;
779 block_expiration = GNUNET_TIME_absolute_max(crc->expire, expire);
780 if (block_expiration.abs_value != expire.abs_value)
781 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updated block expiration time\n");
783 memset (&dummy_signature, '\0', sizeof (dummy_signature));
785 /* Database operation */
786 GNUNET_assert ((rd_new != NULL) && (rd_count_new > 0));
787 res = GSN_database->put_records(GSN_database->cls,
788 (const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) crc->pubkey,
791 rd_count_new, rd_new,
793 GNUNET_break (GNUNET_OK == res);
794 if (res == GNUNET_OK)
795 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully put record for `%s' in database \n", crc->name);
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to put record for `%s' in database \n", crc->name);
801 GNUNET_free_non_null (rd_new);
805 /* failed to create the record */
806 crc->res = GNUNET_SYSERR;
809 /* database operations OK */
810 if (GNUNET_YES == update)
811 /* we updated an existing record */
812 crc->res = GNUNET_NO;
814 /* we created a new record */
815 crc->res = GNUNET_YES;
818 /* identical entry existed, so we did nothing */
819 crc->res = GNUNET_NO;
825 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Update result for name `%s' %u\n", crc->name, res);
829 static void handle_record_create (void *cls,
830 struct GNUNET_SERVER_Client * client,
831 const struct GNUNET_MessageHeader * message)
833 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_CREATE");
834 struct GNUNET_NAMESTORE_Client *nc;
835 struct GNUNET_NAMESTORE_CryptoContainer *cc;
836 struct CreateRecordContext crc;
837 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
838 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
839 struct RecordCreateResponseMessage rcr_msg;
840 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
841 GNUNET_HashCode long_hash;
853 int res = GNUNET_SYSERR;
854 crc.res = GNUNET_SYSERR;
856 if (ntohs (message->size) < sizeof (struct RecordCreateMessage))
859 GNUNET_SERVER_receive_done (client, GNUNET_OK);
863 nc = client_lookup(client);
867 GNUNET_SERVER_receive_done (client, GNUNET_OK);
871 struct RecordCreateMessage * rp_msg = (struct RecordCreateMessage *) message;
872 rid = ntohl (rp_msg->gns_header.r_id);
873 name_len = ntohs (rp_msg->name_len);
874 msg_size = ntohs (message->size);
875 rd_count = ntohs (rp_msg->rd_count);
876 rd_ser_len = ntohs (rp_msg->rd_len);
877 key_len = ntohs (rp_msg->pkey_len);
878 msg_size_exp = sizeof (struct RecordCreateMessage) + key_len + name_len + rd_ser_len;
880 if (msg_size != msg_size_exp)
882 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
884 GNUNET_SERVER_receive_done (client, GNUNET_OK);
888 if ((name_len == 0) || (name_len > 256))
891 GNUNET_SERVER_receive_done (client, GNUNET_OK);
895 pkey_tmp = (char *) &rp_msg[1];
896 name_tmp = &pkey_tmp[key_len];
897 rd_ser = &name_tmp[name_len];
899 if (name_tmp[name_len -1] != '\0')
902 GNUNET_SERVER_receive_done (client, GNUNET_OK);
906 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
908 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
909 if ((res != GNUNET_OK) || (rd_count != 1))
915 /* Extracting and converting private key */
916 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
917 GNUNET_assert (pkey != NULL);
918 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
919 GNUNET_CRYPTO_short_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
920 GNUNET_CRYPTO_short_hash_double (&pubkey_hash, &long_hash);
922 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
924 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received new private key for zone `%s'\n",GNUNET_short_h2s(&pubkey_hash));
926 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
927 cc->privkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
928 cc->pubkey = GNUNET_malloc(sizeof (pub));
929 memcpy (cc->pubkey, &pub, sizeof(pub));
930 cc->zone = pubkey_hash;
931 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, cc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
934 crc.expire = GNUNET_TIME_absolute_ntoh(rp_msg->expire);
935 crc.res = GNUNET_SYSERR;
941 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Creating record for name `%s' in zone `%s'\n", name_tmp, GNUNET_short_h2s(&pubkey_hash));
943 /* Get existing records for name */
944 res = GSN_database->iterate_records(GSN_database->cls, &pubkey_hash, name_tmp, 0, &handle_create_record_it, &crc);
945 if (res != GNUNET_SYSERR)
947 GNUNET_CRYPTO_rsa_key_free(pkey);
952 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_CREATE_RESPONSE");
953 rcr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE_RESPONSE);
954 rcr_msg.gns_header.header.size = htons (sizeof (struct RecordCreateResponseMessage));
955 rcr_msg.gns_header.r_id = htonl (rid);
956 if ((GNUNET_OK == res) && (crc.res == GNUNET_YES))
957 rcr_msg.op_result = htonl (GNUNET_YES);
958 else if ((GNUNET_OK == res) && (crc.res == GNUNET_NO))
959 rcr_msg.op_result = htonl (GNUNET_NO);
961 rcr_msg.op_result = htonl (GNUNET_SYSERR);
962 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rcr_msg, GNUNET_NO);
964 GNUNET_SERVER_receive_done (client, GNUNET_OK);
968 struct RemoveRecordContext
970 struct GNUNET_NAMESTORE_RecordData *rd;
971 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
976 handle_record_remove_it (void *cls,
977 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
978 struct GNUNET_TIME_Absolute expire,
980 unsigned int rd_count,
981 const struct GNUNET_NAMESTORE_RecordData *rd,
982 const struct GNUNET_CRYPTO_RsaSignature *signature)
984 struct RemoveRecordContext *rrc = cls;
988 unsigned int rd_count_new;
990 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s 'currently has %u records\n", name, rd_count);
994 /* Could not find record to remove */
999 /* Find record to remove */
1000 found = GNUNET_SYSERR;
1001 for (c = 0; c < rd_count; c++)
1003 if ((rd[c].expiration.abs_value == rrc->rd->expiration.abs_value) &&
1004 (rd[c].flags == rrc->rd->flags) &&
1005 (rd[c].record_type == rrc->rd->record_type) &&
1006 (rd[c].data_size == rrc->rd->data_size) &&
1007 (0 == memcmp (rd[c].data, rrc->rd->data, rrc->rd->data_size)))
1009 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found record to remove!\n", rd_count);
1014 if (GNUNET_SYSERR == found)
1016 /* Could not find record to remove */
1021 rd_count_new = rd_count -1;
1022 struct GNUNET_NAMESTORE_RecordData rd_new[rd_count_new];
1024 unsigned int c2 = 0;
1025 for (c = 0; c < rd_count; c++)
1029 GNUNET_assert (c2 < rd_count_new);
1035 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name `%s' now has %u records\n", name, rd_count_new);
1037 /* Create dummy signature */
1038 struct GNUNET_CRYPTO_RsaSignature dummy_signature;
1039 memset (&dummy_signature, '\0', sizeof (dummy_signature));
1043 res = GSN_database->put_records(GSN_database->cls,
1047 rd_count_new, rd_new,
1049 if (GNUNET_OK != res)
1051 /* Could put records into database */
1059 static void handle_record_remove (void *cls,
1060 struct GNUNET_SERVER_Client * client,
1061 const struct GNUNET_MessageHeader * message)
1063 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_RECORD_REMOVE");
1064 struct GNUNET_NAMESTORE_Client *nc;
1065 struct RecordRemoveResponseMessage rrr_msg;
1066 struct GNUNET_CRYPTO_RsaPrivateKey *pkey;
1067 struct GNUNET_NAMESTORE_CryptoContainer *cc = NULL;
1068 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
1069 struct GNUNET_CRYPTO_ShortHashCode pubkey_hash;
1070 GNUNET_HashCode long_hash;
1071 char * pkey_tmp = NULL;
1072 char * name_tmp = NULL;
1073 char * rd_ser = NULL;
1075 size_t name_len = 0;
1076 size_t rd_ser_len = 0;
1077 size_t msg_size = 0;
1078 size_t msg_size_exp = 0;
1082 int res = GNUNET_SYSERR;
1084 if (ntohs (message->size) < sizeof (struct RecordRemoveMessage))
1086 GNUNET_break_op (0);
1087 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1091 nc = client_lookup(client);
1094 GNUNET_break_op (0);
1095 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1099 struct RecordRemoveMessage * rr_msg = (struct RecordRemoveMessage *) message;
1100 rid = ntohl (rr_msg->gns_header.r_id);
1101 name_len = ntohs (rr_msg->name_len);
1102 rd_ser_len = ntohs (rr_msg->rd_len);
1103 rd_count = ntohs (rr_msg->rd_count);
1104 key_len = ntohs (rr_msg->pkey_len);
1105 msg_size = ntohs (message->size);
1107 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1109 GNUNET_break_op (0);
1110 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1114 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
1116 GNUNET_break_op (0);
1117 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1121 msg_size_exp = sizeof (struct RecordRemoveMessage) + key_len + name_len + rd_ser_len;
1122 if (msg_size != msg_size_exp)
1124 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Expected message %u size but message size is %u \n", msg_size_exp, msg_size);
1125 GNUNET_break_op (0);
1126 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1130 if ((rd_count != 1) || (rd_ser_len < 1) || (name_len >=256) || (name_len == 0))
1132 GNUNET_break_op (0);
1133 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1137 pkey_tmp = (char *) &rr_msg[1];
1138 name_tmp = &pkey_tmp[key_len];
1139 rd_ser = &name_tmp[name_len];
1142 if ((name_len == 0) || (name_len > 256))
1144 GNUNET_break_op (0);
1145 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1149 if (name_tmp[name_len -1] != '\0')
1151 GNUNET_break_op (0);
1152 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1156 /* Extracting and converting private key */
1157 pkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1158 GNUNET_assert (pkey != NULL);
1159 GNUNET_CRYPTO_rsa_key_get_public(pkey, &pub);
1160 GNUNET_CRYPTO_short_hash (&pub, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &pubkey_hash);
1161 GNUNET_CRYPTO_short_hash_double (&pubkey_hash, &long_hash);
1163 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
1165 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received new private key for zone `%s'\n",GNUNET_short_h2s(&pubkey_hash));
1166 cc = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1167 cc->privkey = GNUNET_CRYPTO_rsa_decode_key((char *) pkey_tmp, key_len);
1168 cc->pubkey = GNUNET_malloc(sizeof (pub));
1169 memcpy (cc->pubkey, &pub, sizeof(pub));
1170 cc->zone = pubkey_hash;
1172 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, cc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1175 struct GNUNET_NAMESTORE_RecordData rd[rd_count];
1176 res = GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_ser, rd_count, rd);
1177 if ((res != GNUNET_OK) || (rd_count != 1))
1179 GNUNET_break_op (0);
1183 struct RemoveRecordContext rrc;
1187 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s' in zone `%s'\n", name_tmp, GNUNET_short_h2s(&pubkey_hash));
1189 /* Database operation */
1190 res = GSN_database->iterate_records (GSN_database->cls,
1194 handle_record_remove_it, &rrc);
1196 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing record for name `%s': %s\n",
1197 name_tmp, (rrc.op_res == 0) ? "OK" : "FAIL");
1202 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "RECORD_REMOVE_RESPONSE");
1203 rrr_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE_RESPONSE);
1204 rrr_msg.gns_header.header.size = htons (sizeof (struct RecordRemoveResponseMessage));
1205 rrr_msg.gns_header.r_id = htonl (rid);
1206 rrr_msg.op_result = htonl (res);
1207 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &rrr_msg, GNUNET_NO);
1209 GNUNET_CRYPTO_rsa_key_free (pkey);
1211 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1215 struct ZoneToNameCtx
1217 struct GNUNET_NAMESTORE_Client *nc;
1222 handle_zone_to_name_it (void *cls,
1223 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1224 struct GNUNET_TIME_Absolute expire,
1226 unsigned int rd_count,
1227 const struct GNUNET_NAMESTORE_RecordData *rd,
1228 const struct GNUNET_CRYPTO_RsaSignature *signature)
1230 struct ZoneToNameCtx * ztn_ctx = cls;
1231 struct ZoneToNameResponseMessage *ztnr_msg;
1232 int16_t res = GNUNET_SYSERR;
1233 uint16_t name_len = 0;
1234 uint16_t rd_ser_len = 0 ;
1235 int32_t contains_sig = 0;
1236 size_t msg_size = 0;
1238 char *rd_ser = NULL;
1243 if ((zone_key != NULL) && (name != NULL))
1246 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found results: name is `%s', has %u records\n", name, rd_count);
1248 name_len = strlen (name) +1;
1252 /* no result found */
1253 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found no results\n");
1260 rd_ser_len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
1261 rd_ser = GNUNET_malloc (rd_ser_len);
1262 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1267 if (signature != NULL)
1268 contains_sig = GNUNET_YES;
1270 contains_sig = GNUNET_NO;
1274 msg_size = sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len + contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature);
1275 ztnr_msg = GNUNET_malloc (msg_size);
1277 name_tmp = (char *) &ztnr_msg[1];
1278 rd_tmp = &name_tmp[name_len];
1279 sig_tmp = &rd_tmp[rd_ser_len];
1281 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_TO_NAME_RESPONSE");
1282 ztnr_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE);
1283 ztnr_msg->gns_header.header.size = htons (msg_size);
1284 ztnr_msg->gns_header.r_id = htonl (ztn_ctx->rid);
1285 ztnr_msg->res = htons (res);
1286 ztnr_msg->rd_len = htons (rd_ser_len);
1287 ztnr_msg->rd_count = htons (rd_count);
1288 ztnr_msg->name_len = htons (name_len);
1289 ztnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
1290 if (zone_key != NULL)
1291 ztnr_msg->zone_key = *zone_key;
1293 memset (&ztnr_msg->zone_key, '\0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1295 if ((name_len > 0) && (name != NULL))
1296 memcpy (name_tmp, name, name_len);
1298 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);
1299 if ((rd_ser_len > 0) && (rd_ser != NULL))
1300 memcpy (rd_tmp, rd_ser, rd_ser_len);
1301 if ((GNUNET_YES == contains_sig) && (signature != NULL))
1302 memcpy (sig_tmp, signature, contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature));
1304 GNUNET_SERVER_notification_context_unicast (snc, ztn_ctx->nc->client, (const struct GNUNET_MessageHeader *) ztnr_msg, GNUNET_NO);
1305 GNUNET_free (ztnr_msg);
1306 GNUNET_free_non_null (rd_ser);
1310 static void handle_zone_to_name (void *cls,
1311 struct GNUNET_SERVER_Client * client,
1312 const struct GNUNET_MessageHeader * message)
1314 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_TO_NAME");
1315 struct GNUNET_NAMESTORE_Client *nc;
1316 struct ZoneToNameCtx ztn_ctx;
1317 size_t msg_size = 0;
1320 if (ntohs (message->size) != sizeof (struct ZoneToNameMessage))
1322 GNUNET_break_op (0);
1323 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1327 nc = client_lookup(client);
1330 GNUNET_break_op (0);
1331 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1335 struct ZoneToNameMessage *ztn_msg = (struct ZoneToNameMessage *) message;
1337 if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
1339 GNUNET_break_op (0);
1340 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1344 rid = ntohl (ztn_msg->gns_header.r_id);
1349 struct GNUNET_CRYPTO_ShortHashAsciiEncoded z_tmp;
1350 GNUNET_CRYPTO_short_hash_to_enc(&ztn_msg->zone, &z_tmp);
1351 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up name for zone `%s' in zone `%s'\n",
1353 GNUNET_short_h2s (&ztn_msg->value_zone));
1355 GSN_database->zone_to_name (GSN_database->cls, &ztn_msg->zone, &ztn_msg->value_zone, &handle_zone_to_name_it, &ztn_ctx);
1357 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1360 struct ZoneIterationProcResult
1363 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded zone_key;
1366 struct GNUNET_CRYPTO_RsaSignature signature;
1367 struct GNUNET_TIME_Absolute expire;
1377 void zone_iteration_proc (void *cls,
1378 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
1379 struct GNUNET_TIME_Absolute expire,
1381 unsigned int rd_count,
1382 const struct GNUNET_NAMESTORE_RecordData *rd,
1383 const struct GNUNET_CRYPTO_RsaSignature *signature)
1385 struct GNUNET_NAMESTORE_ZoneIteration *zi = cls;
1386 struct GNUNET_NAMESTORE_Client *nc = zi->client;
1387 struct GNUNET_NAMESTORE_CryptoContainer * cc;
1388 struct GNUNET_CRYPTO_RsaSignature *signature_new = NULL;
1389 struct GNUNET_TIME_Absolute e;
1390 struct GNUNET_CRYPTO_ShortHashCode zone_key_hash;
1391 GNUNET_HashCode long_hash;
1392 int authoritative = GNUNET_NO;
1394 if ((zone_key == NULL) && (name == NULL))
1396 struct ZoneIterationResponseMessage zir_msg;
1397 if (zi->has_zone == GNUNET_YES)
1398 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for zone `%s'\n", GNUNET_short_h2s(&zi->zone));
1400 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No more results for all zones\n");
1402 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending empty `%s' message\n", "ZONE_ITERATION_RESPONSE");
1403 zir_msg.gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1404 zir_msg.gns_header.header.size = htons (sizeof (struct ZoneIterationResponseMessage));
1405 zir_msg.gns_header.r_id = htonl(zi->request_id);
1406 zir_msg.expire = GNUNET_TIME_absolute_hton(GNUNET_TIME_absolute_get_zero());
1407 zir_msg.name_len = htons (0);
1408 zir_msg.reserved = htons (0);
1409 zir_msg.rd_count = htons (0);
1410 zir_msg.rd_len = htons (0);
1411 memset (&zir_msg.public_key, '\0', sizeof (zir_msg.public_key));
1412 memset (&zir_msg.signature, '\0', sizeof (zir_msg.signature));
1413 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &zir_msg, GNUNET_NO);
1415 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Removing zone iterator\n");
1416 GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, zi);
1422 struct ZoneIterationResponseMessage *zir_msg;
1423 if (zi->has_zone == GNUNET_YES)
1424 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over zone `%s'\n",
1425 name, GNUNET_short_h2s(&zi->zone));
1426 if (zi->has_zone == GNUNET_NO)
1427 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending name `%s' for iteration over all zones\n",
1435 name_len = strlen (name) +1;
1437 rd_ser_len = GNUNET_NAMESTORE_records_get_size(rd_count, rd);
1438 char rd_ser[rd_ser_len];
1439 GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
1440 msg_size = sizeof (struct ZoneIterationResponseMessage) + name_len + rd_ser_len;
1441 zir_msg = GNUNET_malloc(msg_size);
1443 name_tmp = (char *) &zir_msg[1];
1444 rd_tmp = &name_tmp[name_len];
1446 GNUNET_CRYPTO_short_hash(zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone_key_hash);
1447 GNUNET_CRYPTO_short_hash_double(&zone_key_hash, &long_hash);
1448 if (GNUNET_CONTAINER_multihashmap_contains(zonekeys, &long_hash))
1450 cc = GNUNET_CONTAINER_multihashmap_get(zonekeys, &long_hash);
1451 e = get_block_expiration_time(rd_count, rd);
1453 signature_new = GNUNET_NAMESTORE_create_signature(cc->privkey, e, name, rd, rd_count);
1454 GNUNET_assert (signature_new != NULL);
1455 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);
1456 authoritative = GNUNET_YES;
1460 zir_msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_RESPONSE);
1461 zir_msg->gns_header.header.size = htons (msg_size);
1462 zir_msg->gns_header.r_id = htonl(zi->request_id);
1463 zir_msg->expire = GNUNET_TIME_absolute_hton(expire);
1464 zir_msg->reserved = htons (0);
1465 zir_msg->name_len = htons (name_len);
1466 zir_msg->rd_count = htons (rd_count);
1467 zir_msg->rd_len = htons (rd_ser_len);
1468 if ((GNUNET_YES == authoritative) && (NULL != signature_new))
1470 zir_msg->signature = *signature_new;
1471 GNUNET_free (signature_new);
1474 zir_msg->signature = *signature;
1475 GNUNET_assert (NULL != zone_key);
1476 if (zone_key != NULL)
1477 zir_msg->public_key = *zone_key;
1478 memcpy (name_tmp, name, name_len);
1479 memcpy (rd_tmp, rd_ser, rd_ser_len);
1481 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with size %u\n", "ZONE_ITERATION_RESPONSE", msg_size);
1482 GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) zir_msg, GNUNET_NO);
1483 GNUNET_free (zir_msg);
1487 static void handle_iteration_start (void *cls,
1488 struct GNUNET_SERVER_Client * client,
1489 const struct GNUNET_MessageHeader * message)
1491 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_START");
1493 struct ZoneIterationStartMessage * zis_msg = (struct ZoneIterationStartMessage *) message;
1494 struct GNUNET_NAMESTORE_Client *nc;
1495 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1497 nc = client_lookup(client);
1500 GNUNET_break_op (0);
1501 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1505 zi = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_ZoneIteration));
1506 zi->request_id = ntohl (zis_msg->gns_header.r_id);
1509 zi->zone = zis_msg->zone;
1511 struct GNUNET_CRYPTO_ShortHashCode dummy;
1512 struct GNUNET_CRYPTO_ShortHashCode *zone_tmp;
1513 memset (&dummy, '\0', sizeof (dummy));
1514 if (0 == memcmp (&dummy, &zis_msg->zone, sizeof (dummy)))
1516 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over all zones\n");
1517 zi->has_zone = GNUNET_NO;
1522 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting to iterate over zone `%s'\n", GNUNET_short_h2s (&zis_msg->zone));
1523 zi->has_zone = GNUNET_YES;
1524 zone_tmp = &zis_msg->zone;
1527 GNUNET_CONTAINER_DLL_insert (nc->op_head, nc->op_tail, zi);
1529 GSN_database->iterate_records (GSN_database->cls, zone_tmp , NULL, zi->offset , &zone_iteration_proc, zi);
1530 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1533 static void handle_iteration_stop (void *cls,
1534 struct GNUNET_SERVER_Client * client,
1535 const struct GNUNET_MessageHeader * message)
1537 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_STOP");
1539 struct GNUNET_NAMESTORE_Client *nc;
1540 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1541 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1544 nc = client_lookup(client);
1547 GNUNET_break_op (0);
1548 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1552 rid = ntohl (zis_msg->gns_header.r_id);
1553 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1555 if (zi->request_id == rid)
1560 GNUNET_break_op (0);
1561 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1565 GNUNET_CONTAINER_DLL_remove(nc->op_head, nc->op_tail, zi);
1566 if (GNUNET_YES == zi->has_zone)
1567 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration for zone `%s'\n", GNUNET_short_h2s (&zi->zone));
1569 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stopped zone iteration all zones\n");
1572 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1575 static void handle_iteration_next (void *cls,
1576 struct GNUNET_SERVER_Client * client,
1577 const struct GNUNET_MessageHeader * message)
1579 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "ZONE_ITERATION_NEXT");
1581 struct GNUNET_NAMESTORE_Client *nc;
1582 struct GNUNET_NAMESTORE_ZoneIteration *zi;
1583 struct GNUNET_CRYPTO_ShortHashCode *zone_tmp;
1584 struct ZoneIterationStopMessage * zis_msg = (struct ZoneIterationStopMessage *) message;
1587 nc = client_lookup(client);
1590 GNUNET_break_op (0);
1591 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1595 rid = ntohl (zis_msg->gns_header.r_id);
1596 for (zi = nc->op_head; zi != NULL; zi = zi->next)
1598 if (zi->request_id == rid)
1603 GNUNET_break_op (0);
1604 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1608 if (GNUNET_YES == zi->has_zone)
1609 zone_tmp = &zi->zone;
1614 GSN_database->iterate_records (GSN_database->cls, zone_tmp, NULL, zi->offset , &zone_iteration_proc, zi);
1615 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1618 int zonekey_file_it (void *cls, const char *filename)
1620 GNUNET_HashCode long_hash;
1622 if ((filename != NULL) && (NULL != strstr(filename, ".zkey")))
1624 struct GNUNET_CRYPTO_RsaPrivateKey * privkey;
1625 struct GNUNET_NAMESTORE_CryptoContainer *c;
1626 privkey = GNUNET_CRYPTO_rsa_key_create_from_file(filename);
1627 if (privkey == NULL)
1630 c = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_CryptoContainer));
1631 c->pubkey = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
1632 c->privkey = privkey;
1633 GNUNET_CRYPTO_rsa_key_get_public(privkey, c->pubkey);
1634 GNUNET_CRYPTO_short_hash(c->pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &c->zone);
1636 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found zonefile for zone `%s'\n", GNUNET_short_h2s (&c->zone));
1637 GNUNET_CRYPTO_short_hash_double (&c->zone, &long_hash);
1638 GNUNET_CONTAINER_multihashmap_put(zonekeys, &long_hash, c, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1646 * Process template requests.
1648 * @param cls closure
1649 * @param server the initialized server
1650 * @param cfg configuration to use
1653 run (void *cls, struct GNUNET_SERVER_Handle *server,
1654 const struct GNUNET_CONFIGURATION_Handle *cfg)
1658 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
1660 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1661 {&handle_start, NULL,
1662 GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
1663 {&handle_lookup_name, NULL,
1664 GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
1665 {&handle_record_put, NULL,
1666 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_PUT, 0},
1667 {&handle_record_create, NULL,
1668 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_CREATE, 0},
1669 {&handle_record_remove, NULL,
1670 GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_REMOVE, 0},
1671 {&handle_zone_to_name, NULL,
1672 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, 0},
1673 {&handle_iteration_start, NULL,
1674 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, sizeof (struct ZoneIterationStartMessage)},
1675 {&handle_iteration_next, NULL,
1676 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, 0},
1677 {&handle_iteration_stop, NULL,
1678 GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, 0},
1684 /* Load private keys from disk */
1686 GNUNET_CONFIGURATION_get_value_filename (cfg, "namestore", "zonefile_directory",
1687 &zonefile_directory))
1689 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No directory to load zonefiles specified in configuration\n"));
1690 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1694 if (GNUNET_NO == GNUNET_DISK_file_test (zonefile_directory))
1696 if (GNUNET_SYSERR == GNUNET_DISK_directory_create (zonefile_directory))
1698 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Creating directory `%s' for zone files failed!\n"), zonefile_directory);
1699 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1702 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created directory `%s' for zone files\n", zonefile_directory);
1705 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Scanning directory `%s' for zone files\n", zonefile_directory);
1706 zonekeys = GNUNET_CONTAINER_multihashmap_create (10);
1707 GNUNET_DISK_directory_scan (zonefile_directory, zonekey_file_it, &counter);
1708 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u zone files\n", counter);
1710 /* Loading database plugin */
1712 GNUNET_CONFIGURATION_get_value_string (cfg, "namestore", "database",
1714 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
1716 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_namestore_%s", database);
1717 GSN_database = GNUNET_PLUGIN_load (db_lib_name, (void *) GSN_cfg);
1718 GNUNET_free (database);
1719 if (GSN_database == NULL)
1721 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n",
1723 GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
1727 /* Configuring server handles */
1728 GNUNET_SERVER_add_handlers (server, handlers);
1729 snc = GNUNET_SERVER_notification_context_create (server, 16);
1730 GNUNET_SERVER_disconnect_notify (server,
1731 &client_disconnect_notification,
1734 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
1741 * The main function for the template service.
1743 * @param argc number of arguments from the command line
1744 * @param argv command line arguments
1745 * @return 0 ok, 1 on error
1748 main (int argc, char *const *argv)
1750 return (GNUNET_OK ==
1751 GNUNET_SERVICE_run (argc, argv, "namestore",
1752 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1755 /* end of gnunet-service-namestore.c */