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21 * @file gnunet-namestore.c
22 * @brief command line tool to manipulate the local zone
23 * @author Christian Grothoff
29 #include <gnunet_util_lib.h>
30 #include <gnunet_dnsparser_lib.h>
31 #include <gnunet_identity_service.h>
32 #include <gnunet_gnsrecord_lib.h>
33 #include <gnunet_gns_service.h>
34 #include <gnunet_namestore_service.h>
38 * Handle to the namestore.
40 static struct GNUNET_NAMESTORE_Handle *ns;
43 * Private key for the our zone.
45 static struct GNUNET_CRYPTO_EcdsaPrivateKey zone_pkey;
48 * Handle to identity lookup.
50 static struct GNUNET_IDENTITY_EgoLookup *el;
53 * Identity service handle
55 static struct GNUNET_IDENTITY_Handle *idh;
60 struct GNUNET_IDENTITY_Operation *get_default;
63 * Name of the ego controlling the zone.
65 static char *ego_name;
68 * Desired action is to add a record.
73 * Queue entry for the 'add-uri' operation.
75 static struct GNUNET_NAMESTORE_QueueEntry *add_qe_uri;
78 * Queue entry for the 'add' operation.
80 static struct GNUNET_NAMESTORE_QueueEntry *add_qe;
83 * Queue entry for the 'reverse lookup' operation (in combination with a name).
85 static struct GNUNET_NAMESTORE_QueueEntry *reverse_qe;
88 * Desired action is to list records.
93 * List iterator for the 'list' operation.
95 static struct GNUNET_NAMESTORE_ZoneIterator *list_it;
98 * Desired action is to remove a record.
103 * Is record public (opposite of #GNUNET_GNSRECORD_RF_PRIVATE)
105 static int is_public;
108 * Is record a shadow record (#GNUNET_GNSRECORD_RF_SHADOW_RECORD)
110 static int is_shadow;
113 * Queue entry for the 'del' operation.
115 static struct GNUNET_NAMESTORE_QueueEntry *del_qe;
118 * Name of the records to add/list/remove.
123 * Value of the record to add/remove.
133 * Reverse lookup to perform.
135 static char *reverse_pkey;
138 * Type of the record to add/remove, NULL to remove all.
140 static char *typestring;
143 * Desired expiration time.
145 static char *expirationstring;
150 static char *nickstring;
153 * Global return value
158 * Type string converted to DNS type value.
160 static uint32_t type;
163 * Value in binary format.
168 * Number of bytes in 'data'.
170 static size_t data_size;
173 * Expirationstring converted to relative time.
175 static struct GNUNET_TIME_Relative etime_rel;
178 * Expirationstring converted to absolute time.
180 static struct GNUNET_TIME_Absolute etime_abs;
183 * Is expiration time relative or absolute time?
185 static int etime_is_rel = GNUNET_SYSERR;
190 static struct GNUNET_NAMESTORE_ZoneMonitor *zm;
193 * Enables monitor mode.
199 * Task run on shutdown. Cleans up everything.
204 do_shutdown (void *cls)
206 if (NULL != get_default)
208 GNUNET_IDENTITY_cancel (get_default);
213 GNUNET_IDENTITY_disconnect (idh);
218 GNUNET_IDENTITY_ego_lookup_cancel (el);
223 GNUNET_NAMESTORE_zone_iteration_stop (list_it);
228 GNUNET_NAMESTORE_cancel (add_qe);
231 if (NULL != add_qe_uri)
233 GNUNET_NAMESTORE_cancel (add_qe_uri);
238 GNUNET_NAMESTORE_cancel (del_qe);
243 GNUNET_NAMESTORE_disconnect (ns);
246 memset (&zone_pkey, 0, sizeof (zone_pkey));
254 GNUNET_NAMESTORE_zone_monitor_stop (zm);
266 * Check if we are finished, and if so, perform shutdown.
271 if ( (NULL == add_qe) &&
272 (NULL == add_qe_uri) &&
274 (NULL == reverse_qe) &&
276 GNUNET_SCHEDULER_shutdown ();
281 * Continuation called to notify client about result of the
284 * @param cls closure, location of the QueueEntry pointer to NULL out
285 * @param success #GNUNET_SYSERR on failure (including timeout/queue drop/failure to validate)
286 * #GNUNET_NO if content was already there
287 * #GNUNET_YES (or other positive value) on success
288 * @param emsg NULL on success, otherwise an error message
291 add_continuation (void *cls,
295 struct GNUNET_NAMESTORE_QueueEntry **qe = cls;
298 if (GNUNET_YES != success)
301 _("Adding record failed: %s\n"),
302 (GNUNET_NO == success) ? "record exists" : emsg);
303 if (GNUNET_NO != success)
312 * Continuation called to notify client about result of the
315 * @param cls closure, unused
316 * @param success #GNUNET_SYSERR on failure (including timeout/queue drop/failure to validate)
317 * #GNUNET_NO if content was already there
318 * #GNUNET_YES (or other positive value) on success
319 * @param emsg NULL on success, otherwise an error message
322 del_continuation (void *cls,
327 if (GNUNET_NO == success)
330 _("Deleting record failed, record does not exist%s%s\n"),
331 (NULL != emsg) ? ": " : "",
332 (NULL != emsg) ? emsg : "");
334 if (GNUNET_SYSERR == success)
337 _("Deleting record failed%s%s\n"),
338 (NULL != emsg) ? ": " : "",
339 (NULL != emsg) ? emsg : "");
346 * Function called when we are done with a zone iteration.
349 zone_iteration_finished (void *cls)
357 * Function called when we encountered an error in a zone iteration.
360 zone_iteration_error_cb (void *cls)
364 "Error iterating over zone\n");
371 * Process a record that was stored in the namestore.
374 * @param zone_key private key of the zone
375 * @param rname name that is being mapped (at most 255 characters long)
376 * @param rd_len number of entries in @a rd array
377 * @param rd array of records with data to store
380 display_record (void *cls,
381 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key,
384 const struct GNUNET_GNSRECORD_Data *rd)
386 const char *typestring;
390 struct GNUNET_TIME_Absolute at;
391 struct GNUNET_TIME_Relative rt;
393 if ( (NULL != name) &&
394 (0 != strcmp (name, rname)) )
396 GNUNET_NAMESTORE_zone_iterator_next (list_it);
402 for (i=0;i<rd_len;i++)
404 if ( (GNUNET_GNSRECORD_TYPE_NICK == rd[i].record_type) &&
408 typestring = GNUNET_GNSRECORD_number_to_typename (rd[i].record_type);
409 s = GNUNET_GNSRECORD_value_to_string (rd[i].record_type,
414 FPRINTF (stdout, _("\tCorrupt or unsupported record of type %u\n"),
415 (unsigned int) rd[i].record_type);
418 if (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION))
420 rt.rel_value_us = rd[i].expiration_time;
421 ets = GNUNET_STRINGS_relative_time_to_string (rt, GNUNET_YES);
425 at.abs_value_us = rd[i].expiration_time;
426 ets = GNUNET_STRINGS_absolute_time_to_string (at);
429 "\t%s: %s (%s)\t%s\t%s\n",
433 (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_PRIVATE)) ? "PRIVATE" : "PUBLIC",
434 (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_SHADOW_RECORD)) ? "SHADOW" : "");
437 FPRINTF (stdout, "%s", "\n");
438 GNUNET_NAMESTORE_zone_iterator_next (list_it);
443 * Function called once we are in sync in monitor mode.
450 FPRINTF (stdout, "%s", "Monitor is now in sync.\n");
455 * Function called on errors while monitoring.
460 monitor_error_cb (void *cls)
462 FPRINTF (stderr, "%s", "Monitor disconnected and out of sync.\n");
467 * Function called if lookup fails.
470 lookup_error_cb (void *cls)
480 * We're storing a record; this function is given the existing record
481 * so that we can merge the information.
483 * @param cls closure, unused
484 * @param zone_key private key of the zone
485 * @param rec_name name that is being mapped (at most 255 characters long)
486 * @param rd_count number of entries in @a rd array
487 * @param rd array of records with data to store
490 get_existing_record (void *cls,
491 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key,
492 const char *rec_name,
493 unsigned int rd_count,
494 const struct GNUNET_GNSRECORD_Data *rd)
496 struct GNUNET_GNSRECORD_Data rdn[rd_count + 1];
497 struct GNUNET_GNSRECORD_Data *rde;
501 if (0 != strcmp (rec_name, name))
509 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
510 "Received %u records for name `%s'\n",
512 for (i=0;i<rd_count;i++)
514 switch (rd[i].record_type)
516 case GNUNET_DNSPARSER_TYPE_CNAME:
518 _("A %s record exists already under `%s', no other records can be added.\n"),
524 case GNUNET_GNSRECORD_TYPE_PKEY:
526 _("A %s record exists already under `%s', no other records can be added.\n"),
532 case GNUNET_GNSRECORD_TYPE_GNS2DNS:
534 _("A %s record exists already under `%s', no other records can be added.\n"),
544 case GNUNET_DNSPARSER_TYPE_CNAME:
548 _("Records already exist under `%s', cannot add `%s' record.\n"),
556 case GNUNET_GNSRECORD_TYPE_PKEY:
560 _("Records already exist under `%s', cannot add `%s' record.\n"),
568 case GNUNET_GNSRECORD_TYPE_GNS2DNS:
572 _("Records already exist under `%s', cannot add `%s' record.\n"),
581 memset (rdn, 0, sizeof (struct GNUNET_GNSRECORD_Data));
582 GNUNET_memcpy (&rdn[1], rd, rd_count * sizeof (struct GNUNET_GNSRECORD_Data));
585 rde->data_size = data_size;
586 rde->record_type = type;
588 rde->flags |= GNUNET_GNSRECORD_RF_SHADOW_RECORD;
590 rde->flags |= GNUNET_GNSRECORD_RF_PRIVATE;
591 if (GNUNET_YES == etime_is_rel)
593 rde->expiration_time = etime_rel.rel_value_us;
594 rde->flags |= GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
596 else if (GNUNET_NO == etime_is_rel)
597 rde->expiration_time = etime_abs.abs_value_us;
599 rde->expiration_time = GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us;
600 GNUNET_assert (NULL != name);
601 add_qe = GNUNET_NAMESTORE_records_store (ns,
612 * Function called if we encountered an error in zone-to-name.
615 reverse_error_cb (void *cls)
625 * Function called with the result of our attempt to obtain a name for a given
629 * @param zone private key of the zone; NULL on disconnect
630 * @param label label of the records; NULL on disconnect
631 * @param rd_count number of entries in @a rd array, 0 if label was deleted
632 * @param rd array of records with data to store
635 handle_reverse_lookup (void *cls,
636 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
638 unsigned int rd_count,
639 const struct GNUNET_GNSRECORD_Data *rd)
655 * Function called if lookup for deletion fails.
658 del_lookup_error_cb (void *cls)
668 * We were asked to delete something; this function is called with
669 * the existing records. Now we should determine what should be
670 * deleted and then issue the deletion operation.
673 * @param zone private key of the zone we are deleting from
674 * @param label name of the records we are editing
675 * @param rd_count size of the @a rd array
676 * @param rd existing records
679 del_monitor (void *cls,
680 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
682 unsigned int rd_count,
683 const struct GNUNET_GNSRECORD_Data *rd)
685 struct GNUNET_GNSRECORD_Data rdx[rd_count];
686 unsigned int rd_left;
695 _("There are no records under label `%s' that could be deleted.\n"),
700 if ( (NULL == value) &&
701 (NULL == typestring) )
703 /* delete everything */
704 del_qe = GNUNET_NAMESTORE_records_store (ns,
714 if (NULL != typestring)
715 type = GNUNET_GNSRECORD_typename_to_number (typestring);
717 type = GNUNET_GNSRECORD_TYPE_ANY;
718 for (i=0;i<rd_count;i++)
721 if (! ( ( (GNUNET_GNSRECORD_TYPE_ANY == type) ||
722 (rd[i].record_type == type) ) &&
724 (NULL == (vs = (GNUNET_GNSRECORD_value_to_string (rd[i].record_type,
726 rd[i].data_size)))) ||
727 (0 == strcmp (vs, value)) ) ) )
728 rdx[rd_left++] = rd[i];
729 GNUNET_free_non_null (vs);
731 if (rd_count == rd_left)
733 /* nothing got deleted */
735 _("There are no records under label `%s' that match the request for deletion.\n"),
740 /* delete everything but what we copied to 'rdx' */
741 del_qe = GNUNET_NAMESTORE_records_store (ns,
752 * Function called with the result from the check if the namestore
753 * service is actually running. If it is, we start the actual
756 * @param cls closure with our configuration
757 * @param result #GNUNET_YES if the namestore service is running
760 testservice_task (void *cls,
763 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
764 struct GNUNET_CRYPTO_EcdsaPublicKey pub;
765 struct GNUNET_GNSRECORD_Data rd;
767 if (GNUNET_YES != result)
769 FPRINTF (stderr, _("Service `%s' is not running\n"),
773 if (! (add|del|list|(NULL != nickstring)|(NULL != uri)|(NULL != reverse_pkey)) )
775 /* nothing more to be done */
777 _("No options given\n"));
778 GNUNET_SCHEDULER_shutdown ();
781 GNUNET_CRYPTO_ecdsa_key_get_public (&zone_pkey,
784 ns = GNUNET_NAMESTORE_connect (cfg);
787 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
788 _("Failed to connect to namestore\n"));
796 _("Missing option `%s' for operation `%s'\n"),
798 GNUNET_SCHEDULER_shutdown ();
802 if (NULL == typestring)
805 _("Missing option `%s' for operation `%s'\n"),
807 GNUNET_SCHEDULER_shutdown ();
811 type = GNUNET_GNSRECORD_typename_to_number (typestring);
812 if (UINT32_MAX == type)
815 _("Unsupported type `%s'\n"),
817 GNUNET_SCHEDULER_shutdown ();
824 _("Missing option `%s' for operation `%s'\n"),
827 GNUNET_SCHEDULER_shutdown ();
831 GNUNET_GNSRECORD_string_to_value (type,
837 _("Value `%s' invalid for record type `%s'\n"),
840 GNUNET_SCHEDULER_shutdown ();
844 if (NULL == expirationstring)
847 _("Missing option `%s' for operation `%s'\n"),
849 GNUNET_SCHEDULER_shutdown ();
853 if (0 == strcmp (expirationstring,
856 etime_abs = GNUNET_TIME_UNIT_FOREVER_ABS;
857 etime_is_rel = GNUNET_NO;
859 else if (GNUNET_OK ==
860 GNUNET_STRINGS_fancy_time_to_relative (expirationstring,
863 etime_is_rel = GNUNET_YES;
865 else if (GNUNET_OK ==
866 GNUNET_STRINGS_fancy_time_to_absolute (expirationstring,
869 etime_is_rel = GNUNET_NO;
874 _("Invalid time format `%s'\n"),
876 GNUNET_SCHEDULER_shutdown ();
880 add_qe = GNUNET_NAMESTORE_records_lookup (ns,
885 &get_existing_record,
893 _("Missing option `%s' for operation `%s'\n"),
895 GNUNET_SCHEDULER_shutdown ();
899 del_qe = GNUNET_NAMESTORE_records_lookup (ns,
902 &del_lookup_error_cb,
909 list_it = GNUNET_NAMESTORE_zone_iteration_start (ns,
911 &zone_iteration_error_cb,
915 &zone_iteration_finished,
918 if (NULL != reverse_pkey)
920 struct GNUNET_CRYPTO_EcdsaPublicKey pubkey;
923 GNUNET_CRYPTO_ecdsa_public_key_from_string (reverse_pkey,
924 strlen (reverse_pkey),
928 _("Invalid public key for reverse lookup `%s'\n"),
930 GNUNET_SCHEDULER_shutdown ();
932 reverse_qe = GNUNET_NAMESTORE_zone_to_name (ns,
937 &handle_reverse_lookup,
944 struct GNUNET_CRYPTO_EcdsaPublicKey pkey;
946 GNUNET_STRINGS_utf8_tolower (uri, uri);
947 if ( (2 != (sscanf (uri,
948 "gnunet://gns/%52s/%63s",
952 GNUNET_CRYPTO_ecdsa_public_key_from_string (sh,
957 _("Invalid URI `%s'\n"),
959 GNUNET_SCHEDULER_shutdown ();
963 memset (&rd, 0, sizeof (rd));
965 rd.data_size = sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
966 rd.record_type = GNUNET_GNSRECORD_TYPE_PKEY;
967 if (GNUNET_YES == etime_is_rel)
969 rd.expiration_time = etime_rel.rel_value_us;
970 rd.flags |= GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
972 else if (GNUNET_NO == etime_is_rel)
973 rd.expiration_time = etime_abs.abs_value_us;
975 rd.expiration_time = GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us;
978 rd.flags |= GNUNET_GNSRECORD_RF_SHADOW_RECORD;
979 add_qe_uri = GNUNET_NAMESTORE_records_store (ns,
987 if (NULL != nickstring)
989 if (0 == strlen(nickstring))
992 _("Invalid nick `%s'\n"),
994 GNUNET_SCHEDULER_shutdown ();
998 add_qe_uri = GNUNET_NAMESTORE_set_nick(ns, &zone_pkey, nickstring,
999 &add_continuation, &add_qe_uri);
1003 zm = GNUNET_NAMESTORE_zone_monitor_start (cfg,
1017 * Callback invoked from identity service with ego information.
1018 * An @a ego of NULL means the ego was not found.
1020 * @param cls closure with the configuration
1021 * @param ego an ego known to identity service, or NULL
1024 identity_cb (void *cls,
1025 const struct GNUNET_IDENTITY_Ego *ego)
1027 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
1032 if (NULL != ego_name)
1035 _("Ego `%s' not known to identity service\n"),
1038 GNUNET_SCHEDULER_shutdown ();
1042 zone_pkey = *GNUNET_IDENTITY_ego_get_private_key (ego);
1043 GNUNET_free_non_null (ego_name);
1045 GNUNET_CLIENT_service_test ("namestore", cfg,
1046 GNUNET_TIME_UNIT_SECONDS,
1053 default_ego_cb (void *cls,
1054 struct GNUNET_IDENTITY_Ego *ego,
1062 _("No default ego configured in identity service\n"));
1063 GNUNET_SCHEDULER_shutdown ();
1069 identity_cb (cls, ego);
1075 id_connect_cb (void *cls,
1076 struct GNUNET_IDENTITY_Ego *ego,
1080 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
1084 get_default = GNUNET_IDENTITY_get (idh,
1086 &default_ego_cb, (void *) cfg);
1092 testservice_id_task (void *cls, int result)
1094 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
1095 if (result != GNUNET_YES)
1098 _("Identity service is not running\n"));
1099 GNUNET_SCHEDULER_shutdown ();
1103 GNUNET_SCHEDULER_add_shutdown (&do_shutdown, (void *) cfg);
1105 if (NULL == ego_name)
1107 idh = GNUNET_IDENTITY_connect (cfg, &id_connect_cb, (void *) cfg);
1109 fprintf (stderr, _("Cannot connect to identity service\n"));
1113 el = GNUNET_IDENTITY_ego_lookup (cfg,
1121 * Main function that will be run.
1123 * @param cls closure
1124 * @param args remaining command-line arguments
1125 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
1126 * @param cfg configuration
1129 run (void *cls, char *const *args, const char *cfgfile,
1130 const struct GNUNET_CONFIGURATION_Handle *cfg)
1132 if ( (NULL != args[0]) && (NULL == uri) )
1133 uri = GNUNET_strdup (args[0]);
1135 GNUNET_CLIENT_service_test ("identity", cfg,
1136 GNUNET_TIME_UNIT_SECONDS,
1137 &testservice_id_task,
1143 * The main function for gnunet-namestore.
1145 * @param argc number of arguments from the command line
1146 * @param argv command line arguments
1147 * @return 0 ok, 1 on error
1150 main (int argc, char *const *argv)
1155 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
1157 gettext_noop ("add record"), 0,
1158 &GNUNET_GETOPT_set_one, &add},
1159 {'d', "delete", NULL,
1160 gettext_noop ("delete record"), 0,
1161 &GNUNET_GETOPT_set_one, &del},
1162 {'D', "display", NULL,
1163 gettext_noop ("display records"), 0,
1164 &GNUNET_GETOPT_set_one, &list},
1165 {'e', "expiration", "TIME",
1166 gettext_noop ("expiration time for record to use (for adding only), \"never\" is possible"), 1,
1167 &GNUNET_GETOPT_set_string, &expirationstring},
1168 {'i', "nick", "NICKNAME",
1169 gettext_noop ("set the desired nick name for the zone"), 1,
1170 &GNUNET_GETOPT_set_string, &nickstring},
1171 {'m', "monitor", NULL,
1172 gettext_noop ("monitor changes in the namestore"), 0,
1173 &GNUNET_GETOPT_set_one, &monitor},
1174 {'n', "name", "NAME",
1175 gettext_noop ("name of the record to add/delete/display"), 1,
1176 &GNUNET_GETOPT_set_string, &name},
1177 {'r', "reverse", "PKEY",
1178 gettext_noop ("determine our name for the given PKEY"), 1,
1179 &GNUNET_GETOPT_set_string, &reverse_pkey},
1180 {'t', "type", "TYPE",
1181 gettext_noop ("type of the record to add/delete/display"), 1,
1182 &GNUNET_GETOPT_set_string, &typestring},
1184 gettext_noop ("URI to import into our zone"), 1,
1185 &GNUNET_GETOPT_set_string, &uri},
1186 {'V', "value", "VALUE",
1187 gettext_noop ("value of the record to add/delete"), 1,
1188 &GNUNET_GETOPT_set_string, &value},
1189 {'p', "public", NULL,
1190 gettext_noop ("create or list public record"), 0,
1191 &GNUNET_GETOPT_set_one, &is_public},
1192 {'s', "shadow", NULL,
1193 gettext_noop ("create shadow record (only valid if all other records of the same type have expired"), 0,
1194 &GNUNET_GETOPT_set_one, &is_shadow},
1195 {'z', "zone", "EGO",
1196 gettext_noop ("name of the ego controlling the zone"), 1,
1197 &GNUNET_GETOPT_set_string, &ego_name},
1198 GNUNET_GETOPT_OPTION_END
1201 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
1204 GNUNET_log_setup ("gnunet-namestore", "WARNING", NULL);
1206 GNUNET_PROGRAM_run (argc, argv, "gnunet-namestore",
1207 _("GNUnet zone manipulation tool"),
1211 GNUNET_free ((void*) argv);
1212 GNUNET_CRYPTO_ecdsa_key_clear (&zone_pkey);
1215 GNUNET_free ((void*) argv);
1216 GNUNET_CRYPTO_ecdsa_key_clear (&zone_pkey);
1220 /* end of gnunet-namestore.c */