2 This file is part of GNUnet.
3 (C) 2013 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.
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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 identity/gnunet-service-identity.c
23 * @brief identity management service
24 * @author Christian Grothoff
26 * The purpose of this service is to manage private keys that
27 * represent the various egos/pseudonyms/identities of a GNUnet user.
30 * - auto-initialze default egos; maybe trigger default
31 * initializations (such as gnunet-gns-import.sh?)
34 #include "gnunet_util_lib.h"
35 #include "gnunet_constants.h"
36 #include "gnunet_protocols.h"
37 #include "gnunet_statistics_service.h"
38 #include "gnunet_identity_service.h"
43 * Information we keep about each ego.
49 * We keep egos in a DLL.
54 * We keep egos in a DLL.
59 * Private key of the ego.
61 struct GNUNET_CRYPTO_EccPrivateKey *pk;
64 * String identifier for the ego.
72 * Handle to our current configuration.
74 static const struct GNUNET_CONFIGURATION_Handle *cfg;
77 * Handle to subsystem configuration which for each subsystem contains
78 * the name of the default ego.
80 static struct GNUNET_CONFIGURATION_Handle *subsystem_cfg;
83 * Handle to the statistics service.
85 static struct GNUNET_STATISTICS_Handle *stats;
88 * Notification context, simplifies client broadcasts.
90 static struct GNUNET_SERVER_NotificationContext *nc;
93 * Directory where we store the identities.
95 static char *ego_directory;
98 * Configuration file name where subsystem information is kept.
100 static char *subsystem_cfg_file;
103 * Head of DLL of all egos.
105 static struct Ego *ego_head;
108 * Tail of DLL of all egos.
110 static struct Ego *ego_tail;
114 * Get the name of the file we use to store a given ego.
116 * @param ego ego for which we need the filename
117 * @return full filename for the given ego
120 get_ego_filename (struct Ego *ego)
124 GNUNET_asprintf (&filename,
134 * Task run during shutdown.
140 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
146 GNUNET_SERVER_notification_context_destroy (nc);
151 GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
154 GNUNET_CONFIGURATION_destroy (subsystem_cfg);
155 subsystem_cfg = NULL;
156 GNUNET_free (subsystem_cfg_file);
157 subsystem_cfg_file = NULL;
158 GNUNET_free (ego_directory);
159 ego_directory = NULL;
160 while (NULL != (e = ego_head))
162 GNUNET_CONTAINER_DLL_remove (ego_head, ego_tail, e);
170 * Send a result code back to the client.
172 * @param client client that should receive the result code
173 * @param result_code code to transmit
174 * @param emsg error message to include (or NULL for none)
177 send_result_code (struct GNUNET_SERVER_Client *client,
178 uint32_t result_code,
181 struct GNUNET_IDENTITY_ResultCodeMessage *rcm;
187 elen = strlen (emsg) + 1;
188 rcm = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_ResultCodeMessage) + elen);
189 rcm->header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_RESULT_CODE);
190 rcm->header.size = htons (sizeof (struct GNUNET_IDENTITY_ResultCodeMessage) + elen);
191 rcm->result_code = htonl (result_code);
192 memcpy (&rcm[1], emsg, elen);
193 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
194 "Sending result %d (%s) to client\n",
197 GNUNET_SERVER_notification_context_unicast (nc, client, &rcm->header, GNUNET_NO);
203 * Create an update message with information about the current state of an ego.
205 * @param ego ego to create message for
206 * @return corresponding update message
208 static struct GNUNET_IDENTITY_UpdateMessage *
209 create_update_message (struct Ego *ego)
211 struct GNUNET_IDENTITY_UpdateMessage *um;
214 name_len = (NULL == ego->identifier) ? 0 : (strlen (ego->identifier) + 1);
215 um = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_UpdateMessage) + name_len);
216 um->header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE);
217 um->header.size = htons (sizeof (struct GNUNET_IDENTITY_UpdateMessage) + name_len);
218 um->name_len = htons (name_len);
219 um->end_of_list = htons (GNUNET_NO);
220 um->private_key = *ego->pk;
221 memcpy (&um[1], ego->identifier, name_len);
227 * Create a set default message with information about the current state of an ego.
229 * @param ego ego to create message for
230 * @param servicename name of the service to provide in the message
231 * @return corresponding set default message
233 static struct GNUNET_IDENTITY_SetDefaultMessage *
234 create_set_default_message (struct Ego *ego,
235 const char *servicename)
237 struct GNUNET_IDENTITY_SetDefaultMessage *sdm;
240 name_len = (NULL == servicename) ? 0 : (strlen (servicename) + 1);
241 sdm = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_SetDefaultMessage) + name_len);
242 sdm->header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_SET_DEFAULT);
243 sdm->header.size = htons (sizeof (struct GNUNET_IDENTITY_SetDefaultMessage) + name_len);
244 sdm->name_len = htons (name_len);
245 sdm->reserved = htons (0);
246 sdm->private_key = *ego->pk;
247 memcpy (&sdm[1], servicename, name_len);
253 * Handler for START message from client, sends information
254 * about all identities to the client immediately and
255 * adds the client to the notification context for future
259 * @param client who sent the message
260 * @param message the message received
263 handle_start_message (void *cls, struct GNUNET_SERVER_Client *client,
264 const struct GNUNET_MessageHeader *message)
266 struct GNUNET_IDENTITY_UpdateMessage *um;
267 struct GNUNET_IDENTITY_UpdateMessage ume;
270 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
271 "Received START message from client\n");
272 GNUNET_SERVER_notification_context_add (nc, client);
273 for (ego = ego_head; NULL != ego; ego = ego->next)
275 um = create_update_message (ego);
276 GNUNET_SERVER_notification_context_unicast (nc, client, &um->header, GNUNET_NO);
279 memset (&ume, 0, sizeof (ume));
280 ume.header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE);
281 ume.header.size = htons (sizeof (struct GNUNET_IDENTITY_UpdateMessage));
282 ume.end_of_list = htons (GNUNET_YES);
283 ume.name_len = htons (0);
284 GNUNET_SERVER_notification_context_unicast (nc, client, &ume.header, GNUNET_NO);
285 GNUNET_SERVER_receive_done (client, GNUNET_OK);
290 * Handler for GET_DEFAULT message from client, returns
291 * default identity for some service.
294 * @param client who sent the message
295 * @param message the message received
298 handle_get_default_message (void *cls, struct GNUNET_SERVER_Client *client,
299 const struct GNUNET_MessageHeader *message)
301 const struct GNUNET_IDENTITY_GetDefaultMessage *gdm;
302 struct GNUNET_IDENTITY_SetDefaultMessage *sdm;
309 size = ntohs (message->size);
310 if (size <= sizeof (struct GNUNET_IDENTITY_GetDefaultMessage))
313 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
316 gdm = (const struct GNUNET_IDENTITY_GetDefaultMessage *) message;
317 name = (const char *) &gdm[1];
318 name_len = ntohs (gdm->name_len);
319 if ( (name_len + sizeof (struct GNUNET_IDENTITY_GetDefaultMessage) != size) ||
320 (0 != ntohs (gdm->reserved)) ||
321 ('\0' != name[name_len - 1]) )
324 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
327 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
328 "Received GET_DEFAULT for service `%s' from client\n",
331 GNUNET_CONFIGURATION_get_value_string (subsystem_cfg,
333 "DEFAULT_IDENTIFIER",
336 send_result_code (client, 1, gettext_noop ("no default known"));
337 GNUNET_SERVER_receive_done (client, GNUNET_OK);
340 for (ego = ego_head; NULL != ego; ego = ego->next)
342 if (0 == strcmp (ego->identifier,
345 sdm = create_set_default_message (ego,
347 GNUNET_SERVER_notification_context_broadcast (nc, &sdm->header, GNUNET_NO);
349 GNUNET_SERVER_receive_done (client, GNUNET_OK);
350 GNUNET_free (identifier);
354 GNUNET_free (identifier);
355 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
356 "Failed to find ego `%s'\n",
358 send_result_code (client, 1,
359 gettext_noop ("default configured, but ego unknown (internal error)"));
360 GNUNET_SERVER_receive_done (client, GNUNET_OK);
365 * Compare the given two private keys for equality.
367 * @param pk1 one private key
368 * @param pk2 another private key
369 * @return 0 if the keys are equal
372 key_cmp (const struct GNUNET_CRYPTO_EccPrivateKey *pk1,
373 const struct GNUNET_CRYPTO_EccPrivateKey *pk2)
375 return memcmp (pk1, pk2, sizeof (struct GNUNET_CRYPTO_EccPrivateKey));
380 * Handler for SET_DEFAULT message from client, updates
381 * default identity for some service.
384 * @param client who sent the message
385 * @param message the message received
388 handle_set_default_message (void *cls, struct GNUNET_SERVER_Client *client,
389 const struct GNUNET_MessageHeader *message)
391 const struct GNUNET_IDENTITY_SetDefaultMessage *sdm;
397 size = ntohs (message->size);
398 if (size <= sizeof (struct GNUNET_IDENTITY_SetDefaultMessage))
401 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
404 sdm = (const struct GNUNET_IDENTITY_SetDefaultMessage *) message;
405 name_len = ntohs (sdm->name_len);
406 GNUNET_break (0 == ntohs (sdm->reserved));
407 if (name_len + sizeof (struct GNUNET_IDENTITY_SetDefaultMessage) != size)
410 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
413 str = (const char *) &sdm[1];
414 if ('\0' != str[name_len - 1])
417 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
420 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
421 "Received SET_DEFAULT for service `%s' from client\n",
423 for (ego = ego_head; NULL != ego; ego = ego->next)
425 if (0 == key_cmp (ego->pk,
428 GNUNET_CONFIGURATION_set_value_string (subsystem_cfg,
430 "DEFAULT_IDENTIFIER",
433 GNUNET_CONFIGURATION_write (subsystem_cfg,
435 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
436 _("Failed to write subsystem default identifier map to `%s'.\n"),
438 send_result_code (client, 0, NULL);
439 GNUNET_SERVER_receive_done (client, GNUNET_OK);
443 send_result_code (client, 1, _("Unknown ego specified for service (internal error)"));
444 GNUNET_SERVER_receive_done (client, GNUNET_OK);
449 * Send an updated message for the given ego to all listeners.
451 * @param ego ego to send the update for
454 notify_listeners (struct Ego *ego)
456 struct GNUNET_IDENTITY_UpdateMessage *um;
458 um = create_update_message (ego);
459 GNUNET_SERVER_notification_context_broadcast (nc, &um->header, GNUNET_NO);
465 * Handler for CREATE message from client, creates
469 * @param client who sent the message
470 * @param message the message received
473 handle_create_message (void *cls, struct GNUNET_SERVER_Client *client,
474 const struct GNUNET_MessageHeader *message)
476 const struct GNUNET_IDENTITY_CreateRequestMessage *crm;
483 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
484 "Received CREATE message from client\n");
485 size = ntohs (message->size);
486 if (size <= sizeof (struct GNUNET_IDENTITY_CreateRequestMessage))
489 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
492 crm = (const struct GNUNET_IDENTITY_CreateRequestMessage *) message;
493 name_len = ntohs (crm->name_len);
494 GNUNET_break (0 == ntohs (crm->reserved));
495 if (name_len + sizeof (struct GNUNET_IDENTITY_CreateRequestMessage) != size)
498 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
501 str = (const char *) &crm[1];
502 if ('\0' != str[name_len - 1])
505 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
508 for (ego = ego_head; NULL != ego; ego = ego->next)
510 if (0 == strcmp (ego->identifier,
513 send_result_code (client, 1, gettext_noop ("identifier already in use for another ego"));
514 GNUNET_SERVER_receive_done (client, GNUNET_OK);
518 ego = GNUNET_new (struct Ego);
519 ego->pk = GNUNET_new (struct GNUNET_CRYPTO_EccPrivateKey);
520 *ego->pk = crm->private_key;
521 ego->identifier = GNUNET_strdup (str);
522 GNUNET_CONTAINER_DLL_insert (ego_head,
525 send_result_code (client, 0, NULL);
526 fn = get_ego_filename (ego);
527 (void) GNUNET_DISK_directory_create_for_file (fn);
528 if (sizeof (struct GNUNET_CRYPTO_EccPrivateKey) !=
529 GNUNET_DISK_fn_write (fn,
531 sizeof (struct GNUNET_CRYPTO_EccPrivateKey),
532 GNUNET_DISK_PERM_USER_READ |
533 GNUNET_DISK_PERM_USER_WRITE))
534 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
537 notify_listeners (ego);
538 GNUNET_SERVER_receive_done (client, GNUNET_OK);
543 * Closure for 'handle_ego_rename'.
550 const char *old_name;
555 const char *new_name;
560 * An ego was renamed; rename it in all subsystems where it is
561 * currently set as the default.
563 * @param cls the 'struct RenameContext'
564 * @param section a section in the configuration to process
567 handle_ego_rename (void *cls,
570 struct RenameContext *rc = cls;
574 GNUNET_CONFIGURATION_get_value_string (subsystem_cfg,
576 "DEFAULT_IDENTIFIER",
579 if (0 != strcmp (id, rc->old_name))
584 GNUNET_CONFIGURATION_set_value_string (subsystem_cfg,
586 "DEFAULT_IDENTIFIER",
593 * Handler for RENAME message from client, creates
597 * @param client who sent the message
598 * @param message the message received
601 handle_rename_message (void *cls, struct GNUNET_SERVER_Client *client,
602 const struct GNUNET_MessageHeader *message)
604 const struct GNUNET_IDENTITY_RenameMessage *rm;
606 uint16_t old_name_len;
607 uint16_t new_name_len;
609 const char *old_name;
610 const char *new_name;
611 struct RenameContext rename_ctx;
615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
616 "Received RENAME message from client\n");
617 size = ntohs (message->size);
618 if (size <= sizeof (struct GNUNET_IDENTITY_RenameMessage))
621 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
624 rm = (const struct GNUNET_IDENTITY_RenameMessage *) message;
625 old_name_len = ntohs (rm->old_name_len);
626 new_name_len = ntohs (rm->new_name_len);
627 old_name = (const char *) &rm[1];
628 new_name = &old_name[old_name_len];
629 if ( (old_name_len + new_name_len + sizeof (struct GNUNET_IDENTITY_RenameMessage) != size) ||
630 ('\0' != old_name[old_name_len - 1]) ||
631 ('\0' != new_name[new_name_len - 1]) )
634 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
638 /* check if new name is already in use */
639 for (ego = ego_head; NULL != ego; ego = ego->next)
641 if (0 == strcmp (ego->identifier,
644 send_result_code (client, 1, gettext_noop ("target name already exists"));
645 GNUNET_SERVER_receive_done (client, GNUNET_OK);
650 /* locate old name and, if found, perform rename */
651 for (ego = ego_head; NULL != ego; ego = ego->next)
653 if (0 == strcmp (ego->identifier,
656 fn_old = get_ego_filename (ego);
657 GNUNET_free (ego->identifier);
658 rename_ctx.old_name = old_name;
659 rename_ctx.new_name = new_name;
660 GNUNET_CONFIGURATION_iterate_sections (subsystem_cfg,
664 GNUNET_CONFIGURATION_write (subsystem_cfg,
666 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
667 _("Failed to write subsystem default identifier map to `%s'.\n"),
669 ego->identifier = GNUNET_strdup (new_name);
670 fn_new = get_ego_filename (ego);
671 if (0 != RENAME (fn_old, fn_new))
672 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "rename", fn_old);
673 GNUNET_free (fn_old);
674 GNUNET_free (fn_new);
675 notify_listeners (ego);
676 send_result_code (client, 0, NULL);
677 GNUNET_SERVER_receive_done (client, GNUNET_OK);
682 /* failed to locate old name */
683 send_result_code (client, 1, gettext_noop ("no matching ego found"));
684 GNUNET_SERVER_receive_done (client, GNUNET_OK);
689 * An ego was removed, remove it from all subsystems where it is
690 * currently set as the default.
692 * @param cls name of the removed ego (const char *)
693 * @param section a section in the configuration to process
696 handle_ego_delete (void *cls,
699 const char *identifier = cls;
703 GNUNET_CONFIGURATION_get_value_string (subsystem_cfg,
705 "DEFAULT_IDENTIFIER",
708 if (0 != strcmp (id, identifier))
713 GNUNET_CONFIGURATION_set_value_string (subsystem_cfg,
715 "DEFAULT_IDENTIFIER",
722 * Handler for DELETE message from client, creates
726 * @param client who sent the message
727 * @param message the message received
730 handle_delete_message (void *cls, struct GNUNET_SERVER_Client *client,
731 const struct GNUNET_MessageHeader *message)
733 const struct GNUNET_IDENTITY_DeleteMessage *dm;
740 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
741 "Received DELETE message from client\n");
742 size = ntohs (message->size);
743 if (size <= sizeof (struct GNUNET_IDENTITY_DeleteMessage))
746 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
749 dm = (const struct GNUNET_IDENTITY_DeleteMessage *) message;
750 name = (const char *) &dm[1];
751 name_len = ntohs (dm->name_len);
752 if ( (name_len + sizeof (struct GNUNET_IDENTITY_DeleteMessage) != size) ||
753 (0 != ntohs (dm->reserved)) ||
754 ('\0' != name[name_len - 1]) )
757 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
760 for (ego = ego_head; NULL != ego; ego = ego->next)
762 if (0 == strcmp (ego->identifier,
765 GNUNET_CONTAINER_DLL_remove (ego_head,
768 GNUNET_CONFIGURATION_iterate_sections (subsystem_cfg,
772 GNUNET_CONFIGURATION_write (subsystem_cfg,
774 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
775 _("Failed to write subsystem default identifier map to `%s'.\n"),
777 fn = get_ego_filename (ego);
778 if (0 != UNLINK (fn))
779 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
781 GNUNET_free (ego->identifier);
782 ego->identifier = NULL;
783 notify_listeners (ego);
784 GNUNET_free (ego->pk);
786 send_result_code (client, 0, NULL);
787 GNUNET_SERVER_receive_done (client, GNUNET_OK);
792 send_result_code (client, 1, gettext_noop ("no matching ego found"));
793 GNUNET_SERVER_receive_done (client, GNUNET_OK);
798 * Process the given file from the "EGODIR". Parses the file
799 * and creates the respective 'struct Ego' in memory.
802 * @param filename name of the file to parse
803 * @return GNUNET_OK to continue to iterate,
804 * GNUNET_NO to stop iteration with no error,
805 * GNUNET_SYSERR to abort iteration with error!
808 process_ego_file (void *cls,
809 const char *filename)
814 fn = strrchr (filename, (int) DIR_SEPARATOR);
820 ego = GNUNET_new (struct Ego);
821 ego->pk = GNUNET_CRYPTO_ecc_key_create_from_file (filename);
825 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
826 _("Failed to parse ego information in `%s'\n"),
830 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
833 ego->identifier = GNUNET_strdup (fn + 1);
834 GNUNET_CONTAINER_DLL_insert (ego_head,
842 * Handle network size estimate clients.
845 * @param server the initialized server
846 * @param c configuration to use
850 struct GNUNET_SERVER_Handle *server,
851 const struct GNUNET_CONFIGURATION_Handle *c)
853 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
854 {&handle_start_message, NULL,
855 GNUNET_MESSAGE_TYPE_IDENTITY_START, sizeof (struct GNUNET_MessageHeader)},
856 {&handle_get_default_message, NULL,
857 GNUNET_MESSAGE_TYPE_IDENTITY_GET_DEFAULT, 0},
858 {&handle_set_default_message, NULL,
859 GNUNET_MESSAGE_TYPE_IDENTITY_SET_DEFAULT, 0},
860 {&handle_create_message, NULL,
861 GNUNET_MESSAGE_TYPE_IDENTITY_CREATE, 0},
862 {&handle_rename_message, NULL,
863 GNUNET_MESSAGE_TYPE_IDENTITY_RENAME, 0},
864 {&handle_delete_message, NULL,
865 GNUNET_MESSAGE_TYPE_IDENTITY_DELETE, 0},
871 GNUNET_CONFIGURATION_get_value_filename (cfg, "identity",
875 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, "identity", "EGODIR");
876 GNUNET_SCHEDULER_shutdown ();
880 GNUNET_CONFIGURATION_get_value_filename (cfg, "identity",
882 &subsystem_cfg_file))
884 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, "identity", "SUBSYSTEM_CFG");
885 GNUNET_SCHEDULER_shutdown ();
888 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
889 "Loading subsystem configuration `%s'\n",
891 subsystem_cfg = GNUNET_CONFIGURATION_create ();
893 GNUNET_DISK_file_test (subsystem_cfg_file)) &&
895 GNUNET_CONFIGURATION_parse (subsystem_cfg,
896 subsystem_cfg_file)) )
898 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
899 _("Failed to parse subsystem identity configuration file `%s'\n"),
901 GNUNET_SCHEDULER_shutdown ();
904 stats = GNUNET_STATISTICS_create ("identity", cfg);
905 GNUNET_SERVER_add_handlers (server, handlers);
906 nc = GNUNET_SERVER_notification_context_create (server, 1);
908 GNUNET_DISK_directory_create (ego_directory))
910 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
911 _("Failed to create directory `%s' for storing egos\n"),
914 GNUNET_DISK_directory_scan (ego_directory,
917 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
923 * The main function for the network size estimation service.
925 * @param argc number of arguments from the command line
926 * @param argv command line arguments
927 * @return 0 ok, 1 on error
930 main (int argc, char *const *argv)
933 GNUNET_SERVICE_run (argc, argv, "identity",
934 GNUNET_SERVICE_OPTION_NONE,
935 &run, NULL)) ? 0 : 1;
939 /* end of gnunet-service-identity.c */