2 This file is part of GNUnet.
3 Copyright (C) 2012, 2013, 2014 GNUnet e.V.
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., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA.
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 * Process a record that was stored in the namestore.
349 * @param zone_key private key of the zone
350 * @param rname name that is being mapped (at most 255 characters long)
351 * @param rd_len number of entries in @a rd array
352 * @param rd array of records with data to store
355 display_record (void *cls,
356 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key,
359 const struct GNUNET_GNSRECORD_Data *rd)
361 const char *typestring;
365 struct GNUNET_TIME_Absolute at;
366 struct GNUNET_TIME_Relative rt;
374 if ( (NULL != name) &&
375 (0 != strcmp (name, rname)) )
377 GNUNET_NAMESTORE_zone_iterator_next (list_it);
383 for (i=0;i<rd_len;i++)
385 if ( (GNUNET_GNSRECORD_TYPE_NICK == rd[i].record_type) &&
389 typestring = GNUNET_GNSRECORD_number_to_typename (rd[i].record_type);
390 s = GNUNET_GNSRECORD_value_to_string (rd[i].record_type,
395 FPRINTF (stdout, _("\tCorrupt or unsupported record of type %u\n"),
396 (unsigned int) rd[i].record_type);
399 if (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION))
401 rt.rel_value_us = rd[i].expiration_time;
402 ets = GNUNET_STRINGS_relative_time_to_string (rt, GNUNET_YES);
406 at.abs_value_us = rd[i].expiration_time;
407 ets = GNUNET_STRINGS_absolute_time_to_string (at);
410 "\t%s: %s (%s)\t%s\t%s\n",
414 (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_PRIVATE)) ? "PRIVATE" : "PUBLIC",
415 (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_SHADOW_RECORD)) ? "SHADOW" : "");
418 FPRINTF (stdout, "%s", "\n");
419 GNUNET_NAMESTORE_zone_iterator_next (list_it);
424 * Function called once we are in sync in monitor mode.
431 FPRINTF (stdout, "%s", "Monitor is now in sync.\n");
436 * We're storing a record; this function is given the existing record
437 * so that we can merge the information.
439 * @param cls closure, unused
440 * @param zone_key private key of the zone
441 * @param rec_name name that is being mapped (at most 255 characters long)
442 * @param rd_count number of entries in @a rd array
443 * @param rd array of records with data to store
446 get_existing_record (void *cls,
447 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key,
448 const char *rec_name,
449 unsigned int rd_count,
450 const struct GNUNET_GNSRECORD_Data *rd)
452 struct GNUNET_GNSRECORD_Data rdn[rd_count + 1];
453 struct GNUNET_GNSRECORD_Data *rde;
457 if ( (NULL != zone_key) &&
458 (0 != strcmp (rec_name, name)) )
466 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
467 "Received %u records for name `%s'\n",
469 for (i=0;i<rd_count;i++)
471 switch (rd[i].record_type)
473 case GNUNET_DNSPARSER_TYPE_CNAME:
475 _("A %s record exists already under `%s', no other records can be added.\n"),
481 case GNUNET_GNSRECORD_TYPE_PKEY:
483 _("A %s record exists already under `%s', no other records can be added.\n"),
489 case GNUNET_GNSRECORD_TYPE_GNS2DNS:
491 _("A %s record exists already under `%s', no other records can be added.\n"),
501 case GNUNET_DNSPARSER_TYPE_CNAME:
505 _("Records already exist under `%s', cannot add `%s' record.\n"),
513 case GNUNET_GNSRECORD_TYPE_PKEY:
517 _("Records already exist under `%s', cannot add `%s' record.\n"),
525 case GNUNET_GNSRECORD_TYPE_GNS2DNS:
529 _("Records already exist under `%s', cannot add `%s' record.\n"),
538 memset (rdn, 0, sizeof (struct GNUNET_GNSRECORD_Data));
539 memcpy (&rdn[1], rd, rd_count * sizeof (struct GNUNET_GNSRECORD_Data));
542 rde->data_size = data_size;
543 rde->record_type = type;
545 rde->flags |= GNUNET_GNSRECORD_RF_SHADOW_RECORD;
547 rde->flags |= GNUNET_GNSRECORD_RF_PRIVATE;
548 if (GNUNET_YES == etime_is_rel)
550 rde->expiration_time = etime_rel.rel_value_us;
551 rde->flags |= GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
553 else if (GNUNET_NO == etime_is_rel)
554 rde->expiration_time = etime_abs.abs_value_us;
556 rde->expiration_time = GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us;
557 GNUNET_assert (NULL != name);
558 add_qe = GNUNET_NAMESTORE_records_store (ns,
569 * Function called with the result of our attempt to obtain a name for a given
573 * @param zone private key of the zone; NULL on disconnect
574 * @param label label of the records; NULL on disconnect
575 * @param rd_count number of entries in @a rd array, 0 if label was deleted
576 * @param rd array of records with data to store
579 handle_reverse_lookup (void *cls,
580 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
582 unsigned int rd_count,
583 const struct GNUNET_GNSRECORD_Data *rd)
599 * We were asked to delete something; this function is called with
600 * the existing records. Now we should determine what should be
601 * deleted and then issue the deletion operation.
604 * @param zone private key of the zone we are deleting from
605 * @param label name of the records we are editing
606 * @param rd_count size of the @a rd array
607 * @param rd existing records
610 del_monitor (void *cls,
611 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
613 unsigned int rd_count,
614 const struct GNUNET_GNSRECORD_Data *rd)
616 struct GNUNET_GNSRECORD_Data rdx[rd_count];
617 unsigned int rd_left;
626 _("There are no records under label `%s' that could be deleted.\n"),
631 if ( (NULL == value) &&
632 (NULL == typestring) )
634 /* delete everything */
635 del_qe = GNUNET_NAMESTORE_records_store (ns,
644 if (NULL != typestring)
645 type = GNUNET_GNSRECORD_typename_to_number (typestring);
647 type = GNUNET_GNSRECORD_TYPE_ANY;
648 for (i=0;i<rd_count;i++)
651 if (! ( ( (GNUNET_GNSRECORD_TYPE_ANY == type) ||
652 (rd[i].record_type == type) ) &&
654 (NULL == (vs = (GNUNET_GNSRECORD_value_to_string (rd[i].record_type,
656 rd[i].data_size)))) ||
657 (0 == strcmp (vs, value)) ) ) )
658 rdx[rd_left++] = rd[i];
659 GNUNET_free_non_null (vs);
661 if (rd_count == rd_left)
663 /* nothing got deleted */
665 _("There are no records under label `%s' that match the request for deletion.\n"),
670 /* delete everything but what we copied to 'rdx' */
671 del_qe = GNUNET_NAMESTORE_records_store (ns,
681 * Function called with the result from the check if the namestore
682 * service is actually running. If it is, we start the actual
685 * @param cls closure with our configuration
686 * @param result #GNUNET_YES if the namestore service is running
689 testservice_task (void *cls,
692 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
693 struct GNUNET_CRYPTO_EcdsaPublicKey pub;
694 struct GNUNET_GNSRECORD_Data rd;
696 if (GNUNET_YES != result)
698 FPRINTF (stderr, _("Service `%s' is not running\n"),
702 if (! (add|del|list|(NULL != nickstring)|(NULL != uri)|(NULL != reverse_pkey)) )
704 /* nothing more to be done */
706 _("No options given\n"));
707 GNUNET_SCHEDULER_shutdown ();
710 GNUNET_CRYPTO_ecdsa_key_get_public (&zone_pkey,
713 ns = GNUNET_NAMESTORE_connect (cfg);
716 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
717 _("Failed to connect to namestore\n"));
725 _("Missing option `%s' for operation `%s'\n"),
727 GNUNET_SCHEDULER_shutdown ();
731 if (NULL == typestring)
734 _("Missing option `%s' for operation `%s'\n"),
736 GNUNET_SCHEDULER_shutdown ();
740 type = GNUNET_GNSRECORD_typename_to_number (typestring);
741 if (UINT32_MAX == type)
743 fprintf (stderr, _("Unsupported type `%s'\n"), typestring);
744 GNUNET_SCHEDULER_shutdown ();
751 _("Missing option `%s' for operation `%s'\n"),
754 GNUNET_SCHEDULER_shutdown ();
758 GNUNET_GNSRECORD_string_to_value (type,
763 fprintf (stderr, _("Value `%s' invalid for record type `%s'\n"),
766 GNUNET_SCHEDULER_shutdown ();
770 if (NULL == expirationstring)
773 _("Missing option `%s' for operation `%s'\n"),
775 GNUNET_SCHEDULER_shutdown ();
779 if (0 == strcmp (expirationstring, "never"))
781 etime_abs = GNUNET_TIME_UNIT_FOREVER_ABS;
782 etime_is_rel = GNUNET_NO;
784 else if (GNUNET_OK ==
785 GNUNET_STRINGS_fancy_time_to_relative (expirationstring,
788 etime_is_rel = GNUNET_YES;
790 else if (GNUNET_OK ==
791 GNUNET_STRINGS_fancy_time_to_absolute (expirationstring,
794 etime_is_rel = GNUNET_NO;
799 _("Invalid time format `%s'\n"),
801 GNUNET_SCHEDULER_shutdown ();
805 add_qe = GNUNET_NAMESTORE_records_lookup (ns, &zone_pkey, name,
806 &get_existing_record, NULL );
813 _("Missing option `%s' for operation `%s'\n"),
815 GNUNET_SCHEDULER_shutdown ();
819 del_qe = GNUNET_NAMESTORE_records_lookup (ns,
827 list_it = GNUNET_NAMESTORE_zone_iteration_start (ns,
832 if (NULL != reverse_pkey)
834 struct GNUNET_CRYPTO_EcdsaPublicKey pubkey;
837 GNUNET_CRYPTO_ecdsa_public_key_from_string (reverse_pkey,
838 strlen (reverse_pkey),
842 _("Invalid public key for reverse lookup `%s'\n"),
844 GNUNET_SCHEDULER_shutdown ();
846 reverse_qe = GNUNET_NAMESTORE_zone_to_name (ns,
849 &handle_reverse_lookup,
856 struct GNUNET_CRYPTO_EcdsaPublicKey pkey;
858 GNUNET_STRINGS_utf8_tolower (uri, uri);
859 if ( (2 != (sscanf (uri,
860 "gnunet://gns/%52s/%63s",
863 (GNUNET_OK != GNUNET_CRYPTO_ecdsa_public_key_from_string (sh, strlen (sh), &pkey)) )
866 _("Invalid URI `%s'\n"),
868 GNUNET_SCHEDULER_shutdown ();
872 memset (&rd, 0, sizeof (rd));
874 rd.data_size = sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
875 rd.record_type = GNUNET_GNSRECORD_TYPE_PKEY;
876 if (GNUNET_YES == etime_is_rel)
878 rd.expiration_time = etime_rel.rel_value_us;
879 rd.flags |= GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
881 else if (GNUNET_NO == etime_is_rel)
882 rd.expiration_time = etime_abs.abs_value_us;
884 rd.expiration_time = GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us;
887 rd.flags |= GNUNET_GNSRECORD_RF_SHADOW_RECORD;
888 add_qe_uri = GNUNET_NAMESTORE_records_store (ns,
896 if (NULL != nickstring)
898 if (0 == strlen(nickstring))
901 _("Invalid nick `%s'\n"),
903 GNUNET_SCHEDULER_shutdown ();
907 add_qe_uri = GNUNET_NAMESTORE_set_nick(ns, &zone_pkey, nickstring,
908 &add_continuation, &add_qe_uri);
912 zm = GNUNET_NAMESTORE_zone_monitor_start (cfg,
923 * Callback invoked from identity service with ego information.
924 * An @a ego of NULL means the ego was not found.
926 * @param cls closure with the configuration
927 * @param ego an ego known to identity service, or NULL
930 identity_cb (void *cls,
931 const struct GNUNET_IDENTITY_Ego *ego)
933 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
938 if (NULL != ego_name)
941 _("Ego `%s' not known to identity service\n"),
944 GNUNET_SCHEDULER_shutdown ();
948 zone_pkey = *GNUNET_IDENTITY_ego_get_private_key (ego);
949 GNUNET_free_non_null (ego_name);
951 GNUNET_CLIENT_service_test ("namestore", cfg,
952 GNUNET_TIME_UNIT_SECONDS,
959 default_ego_cb (void *cls,
960 struct GNUNET_IDENTITY_Ego *ego,
968 _("No default ego configured in identity service\n"));
969 GNUNET_SCHEDULER_shutdown ();
975 identity_cb (cls, ego);
981 id_connect_cb (void *cls,
982 struct GNUNET_IDENTITY_Ego *ego,
986 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
990 get_default = GNUNET_IDENTITY_get (idh,
992 &default_ego_cb, (void *) cfg);
998 testservice_id_task (void *cls, int result)
1000 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
1001 if (result != GNUNET_YES)
1004 _("Identity service is not running\n"));
1005 GNUNET_SCHEDULER_shutdown ();
1009 GNUNET_SCHEDULER_add_shutdown (&do_shutdown, (void *) cfg);
1011 if (NULL == ego_name)
1013 idh = GNUNET_IDENTITY_connect (cfg, &id_connect_cb, (void *) cfg);
1015 fprintf (stderr, _("Cannot connect to identity service\n"));
1019 el = GNUNET_IDENTITY_ego_lookup (cfg,
1027 * Main function that will be run.
1029 * @param cls closure
1030 * @param args remaining command-line arguments
1031 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
1032 * @param cfg configuration
1035 run (void *cls, char *const *args, const char *cfgfile,
1036 const struct GNUNET_CONFIGURATION_Handle *cfg)
1038 if ( (NULL != args[0]) && (NULL == uri) )
1039 uri = GNUNET_strdup (args[0]);
1041 GNUNET_CLIENT_service_test ("identity", cfg,
1042 GNUNET_TIME_UNIT_SECONDS,
1043 &testservice_id_task,
1049 * The main function for gnunet-namestore.
1051 * @param argc number of arguments from the command line
1052 * @param argv command line arguments
1053 * @return 0 ok, 1 on error
1056 main (int argc, char *const *argv)
1061 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
1063 gettext_noop ("add record"), 0,
1064 &GNUNET_GETOPT_set_one, &add},
1065 {'d', "delete", NULL,
1066 gettext_noop ("delete record"), 0,
1067 &GNUNET_GETOPT_set_one, &del},
1068 {'D', "display", NULL,
1069 gettext_noop ("display records"), 0,
1070 &GNUNET_GETOPT_set_one, &list},
1071 {'e', "expiration", "TIME",
1072 gettext_noop ("expiration time for record to use (for adding only), \"never\" is possible"), 1,
1073 &GNUNET_GETOPT_set_string, &expirationstring},
1074 {'i', "nick", "NICKNAME",
1075 gettext_noop ("set the desired nick name for the zone"), 1,
1076 &GNUNET_GETOPT_set_string, &nickstring},
1077 {'m', "monitor", NULL,
1078 gettext_noop ("monitor changes in the namestore"), 0,
1079 &GNUNET_GETOPT_set_one, &monitor},
1080 {'n', "name", "NAME",
1081 gettext_noop ("name of the record to add/delete/display"), 1,
1082 &GNUNET_GETOPT_set_string, &name},
1083 {'r', "reverse", "PKEY",
1084 gettext_noop ("determine our name for the given PKEY"), 1,
1085 &GNUNET_GETOPT_set_string, &reverse_pkey},
1086 {'t', "type", "TYPE",
1087 gettext_noop ("type of the record to add/delete/display"), 1,
1088 &GNUNET_GETOPT_set_string, &typestring},
1090 gettext_noop ("URI to import into our zone"), 1,
1091 &GNUNET_GETOPT_set_string, &uri},
1092 {'V', "value", "VALUE",
1093 gettext_noop ("value of the record to add/delete"), 1,
1094 &GNUNET_GETOPT_set_string, &value},
1095 {'p', "public", NULL,
1096 gettext_noop ("create or list public record"), 0,
1097 &GNUNET_GETOPT_set_one, &is_public},
1098 {'s', "shadow", NULL,
1099 gettext_noop ("create shadow record (only valid if all other records of the same type have expired"), 0,
1100 &GNUNET_GETOPT_set_one, &is_shadow},
1101 {'z', "zone", "EGO",
1102 gettext_noop ("name of the ego controlling the zone"), 1,
1103 &GNUNET_GETOPT_set_string, &ego_name},
1104 GNUNET_GETOPT_OPTION_END
1107 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
1110 GNUNET_log_setup ("gnunet-namestore", "WARNING", NULL);
1112 GNUNET_PROGRAM_run (argc, argv, "gnunet-namestore",
1113 _("GNUnet zone manipulation tool"),
1117 GNUNET_free ((void*) argv);
1118 GNUNET_CRYPTO_ecdsa_key_clear (&zone_pkey);
1121 GNUNET_free ((void*) argv);
1122 GNUNET_CRYPTO_ecdsa_key_clear (&zone_pkey);
1126 /* end of gnunet-namestore.c */