GNUnet 0.21.1
gnunet-service-identity.c
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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2013 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
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 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20
33#include "platform.h"
34#include "gnunet_util_lib.h"
35#include "gnunet_constants.h"
36#include "gnunet_protocols.h"
39#include "identity.h"
40
41
45struct Ego
46{
50 struct Ego *next;
51
55 struct Ego *prev;
56
61
66};
67
68
72static const struct GNUNET_CONFIGURATION_Handle *cfg;
73
79
84
89
93static char *ego_directory;
94
98static char *subsystem_cfg_file;
99
103static struct Ego *ego_head;
104
108static struct Ego *ego_tail;
109
110
117static char *
119{
120 char *filename;
121
123 "%s%s%s",
126 ego->identifier);
127 return filename;
128}
129
130
138static void
140 struct GNUNET_SERVICE_Client *client,
141 void *app_ctx)
142{
144 "Client %p disconnected\n",
145 client);
146}
147
148
157static void *
159 struct GNUNET_SERVICE_Client *client,
160 struct GNUNET_MQ_Handle *mq)
161{
162 return client;
163}
164
165
171static void
172shutdown_task (void *cls)
173{
174 struct Ego *e;
175
176 if (NULL != nc)
177 {
179 nc = NULL;
180 }
181 if (NULL != stats)
182 {
184 stats = NULL;
185 }
187 subsystem_cfg = NULL;
189 subsystem_cfg_file = NULL;
191 ego_directory = NULL;
192 while (NULL != (e = ego_head))
193 {
195 ego_tail,
196 e);
198 GNUNET_free (e);
199 }
200}
201
202
209static void
211 uint32_t result_code)
212{
213 struct ResultCodeMessage *rcm;
214 struct GNUNET_MQ_Envelope *env;
215
216 env =
218 rcm->result_code = htonl (result_code);
220 "Sending result %d (%s) to client\n",
221 (int) result_code,
222 GNUNET_ErrorCode_get_hint (result_code));
224}
225
226
233static struct GNUNET_MQ_Envelope *
235{
236 struct UpdateMessage *um;
237 struct GNUNET_MQ_Envelope *env;
238 size_t name_len;
239 ssize_t key_len;
240
242 name_len = (NULL == ego->identifier) ? 0 : (strlen (ego->identifier) + 1);
243 env = GNUNET_MQ_msg_extra (um, name_len + key_len,
245 um->name_len = htons (name_len);
246 um->end_of_list = htons (GNUNET_NO);
247 um->key_len = htons (key_len);
248 GNUNET_memcpy (&um[1], ego->identifier, name_len);
250 ((char*) &um[1]) + name_len,
251 key_len);
252 return env;
253}
254
255
265static void
267 const struct GNUNET_MessageHeader *message)
268{
269 struct GNUNET_SERVICE_Client *client = cls;
270
272 "Received START message from client\n");
277 for (struct Ego *ego = ego_head; NULL != ego; ego = ego->next)
278 {
281 }
282 {
283 struct UpdateMessage *ume;
284 struct GNUNET_MQ_Envelope *env;
285
287 0,
289 ume->end_of_list = htons (GNUNET_YES);
290 ume->name_len = htons (0);
291 ume->key_len = htons (0);
293 env);
294 }
296}
297
298
307static int
309 const struct LookupMessage *message)
310{
312 return GNUNET_OK;
313}
314
315
323static void
325 const struct LookupMessage *message)
326{
327 struct GNUNET_SERVICE_Client *client = cls;
328 const char *name;
329 struct GNUNET_MQ_Envelope *env;
330 struct Ego *ego;
331
333 "Received LOOKUP message from client\n");
334 name = (const char *) &message[1];
335 for (ego = ego_head; NULL != ego; ego = ego->next)
336 {
337 if (0 != strcasecmp (name, ego->identifier))
338 continue;
342 return;
343 }
346}
347
348
357static int
359 const struct LookupMessage *message)
360{
362 return GNUNET_OK;
363}
364
365
373static void
375 const struct LookupMessage *message)
376{
377 struct GNUNET_SERVICE_Client *client = cls;
378 const char *name;
379 struct GNUNET_MQ_Envelope *env;
380 struct Ego *lprefix;
381
383 "Received LOOKUP_BY_SUFFIX message from client\n");
384 name = (const char *) &message[1];
385 lprefix = NULL;
386 for (struct Ego *ego = ego_head; NULL != ego; ego = ego->next)
387 {
388 if ((strlen (ego->identifier) <= strlen (name)) &&
389 (0 == strcmp (ego->identifier,
390 &name[strlen (name) - strlen (ego->identifier)])) &&
391 ((strlen (name) == strlen (ego->identifier)) ||
392 ('.' == name[strlen (name) - strlen (ego->identifier) - 1])) &&
393 ((NULL == lprefix) ||
394 (strlen (ego->identifier) > strlen (lprefix->identifier))))
395 {
396 /* found better match, update! */
397 lprefix = ego;
398 }
399 }
400 if (NULL != lprefix)
401 {
402 env = create_update_message (lprefix);
405 return;
406 }
409}
410
411
417static void
419{
420 struct UpdateMessage *um;
421 size_t name_len;
422 ssize_t key_len;
423
424 name_len = (NULL == ego->identifier) ? 0 : (strlen (ego->identifier) + 1);
426 um = GNUNET_malloc (sizeof(struct UpdateMessage) + name_len + key_len);
428 um->header.size = htons (sizeof(struct UpdateMessage) + name_len + key_len);
429 um->name_len = htons (name_len);
430 um->end_of_list = htons (GNUNET_NO);
431 um->key_len = htons (key_len);
432 GNUNET_memcpy (&um[1], ego->identifier, name_len);
434 ((char*) &um[1]) + name_len,
435 key_len);
437 GNUNET_free (um);
438}
439
440
448static int
450 const struct CreateRequestMessage *msg)
451{
452 uint16_t size;
453 uint16_t name_len;
454 size_t key_len;
455 const char *str;
456
457 size = ntohs (msg->header.size);
458 if (size <= sizeof(struct CreateRequestMessage))
459 {
460 GNUNET_break (0);
461 return GNUNET_SYSERR;
462 }
463 name_len = ntohs (msg->name_len);
464 key_len = ntohs (msg->key_len);
465 if (name_len + key_len + sizeof(struct CreateRequestMessage) != size)
466 {
467 GNUNET_break (0);
468 return GNUNET_SYSERR;
469 }
470 str = (const char *) &msg[1] + key_len;
471 if ('\0' != str[name_len - 1])
472 {
473 GNUNET_break (0);
474 return GNUNET_SYSERR;
475 }
476 return GNUNET_OK;
477}
478
479
486static void
488 const struct CreateRequestMessage *crm)
489{
490 struct GNUNET_CRYPTO_PrivateKey private_key;
491 struct GNUNET_SERVICE_Client *client = cls;
492 struct Ego *ego;
493 char *str;
494 char *fn;
495 size_t key_len;
496 size_t kb_read;
497
498 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received CREATE message from client\n");
499 key_len = ntohs (crm->key_len);
500 if ((GNUNET_SYSERR ==
502 key_len,
503 &private_key,
504 &kb_read)) ||
505 (kb_read != key_len))
506 {
508 return;
509 }
510 str = GNUNET_strdup ((const char *) &crm[1] + key_len);
511 GNUNET_STRINGS_utf8_tolower ((const char *) &crm[1] + key_len, str);
512 for (ego = ego_head; NULL != ego; ego = ego->next)
513 {
514 if (0 == strcmp (ego->identifier, str))
515 {
516 send_result_code (client,
519 GNUNET_free (str);
520 return;
521 }
522 }
523 ego = GNUNET_new (struct Ego);
524 ego->pk = private_key;
525 ego->identifier = GNUNET_strdup (str);
527 ego_tail,
528 ego);
530 fn = get_ego_filename (ego);
531 if (GNUNET_OK !=
533 &private_key,
534 sizeof(struct GNUNET_CRYPTO_PrivateKey),
538 GNUNET_free (fn);
539 GNUNET_free (str);
540 notify_listeners (ego);
542}
543
544
549{
553 const char *old_name;
554
558 const char *new_name;
559};
560
568static void
569handle_ego_rename (void *cls, const char *section)
570{
571 struct RenameContext *rc = cls;
572 char *id;
573
575 section,
576 "DEFAULT_IDENTIFIER",
577 &id))
578 return;
579 if (0 != strcmp (id, rc->old_name))
580 {
581 GNUNET_free (id);
582 return;
583 }
585 section,
586 "DEFAULT_IDENTIFIER",
587 rc->new_name);
588 GNUNET_free (id);
589}
590
591
599static int
600check_rename_message (void *cls, const struct RenameMessage *msg)
601{
602 uint16_t size;
603 uint16_t old_name_len;
604 uint16_t new_name_len;
605 const char *old_name;
606 const char *new_name;
607
608 size = ntohs (msg->header.size);
609 if (size <= sizeof(struct RenameMessage))
610 {
611 GNUNET_break (0);
612 return GNUNET_SYSERR;
613 }
614 old_name_len = ntohs (msg->old_name_len);
615 new_name_len = ntohs (msg->new_name_len);
616 old_name = (const char *) &msg[1];
617 new_name = &old_name[old_name_len];
618 if ((old_name_len + new_name_len + sizeof(struct RenameMessage) != size) ||
619 ('\0' != old_name[old_name_len - 1]) ||
620 ('\0' != new_name[new_name_len - 1]))
621 {
622 GNUNET_break (0);
623 return GNUNET_SYSERR;
624 }
625
626 return GNUNET_OK;
627}
628
629
637static void
638handle_rename_message (void *cls, const struct RenameMessage *rm)
639{
640 uint16_t old_name_len;
641 struct Ego *ego;
642 char *old_name;
643 char *new_name;
644 struct RenameContext rename_ctx;
645 struct GNUNET_SERVICE_Client *client = cls;
646 char *fn_old;
647 char *fn_new;
648 const char *old_name_tmp;
649
650 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received RENAME message from client\n");
651 old_name_len = ntohs (rm->old_name_len);
652 old_name_tmp = (const char *) &rm[1];
653 old_name = GNUNET_strdup (old_name_tmp);
654 GNUNET_STRINGS_utf8_tolower (old_name_tmp, old_name);
655 new_name = GNUNET_strdup (&old_name_tmp[old_name_len]);
656 GNUNET_STRINGS_utf8_tolower (&old_name_tmp[old_name_len], new_name);
657
658 /* check if new name is already in use */
659 for (ego = ego_head; NULL != ego; ego = ego->next)
660 {
661 if (0 == strcmp (ego->identifier, new_name))
662 {
665 GNUNET_free (old_name);
666 GNUNET_free (new_name);
667 return;
668 }
669 }
670
671 /* locate old name and, if found, perform rename */
672 for (ego = ego_head; NULL != ego; ego = ego->next)
673 {
674 if (0 == strcmp (ego->identifier, old_name))
675 {
676 fn_old = get_ego_filename (ego);
677 GNUNET_free (ego->identifier);
678 rename_ctx.old_name = old_name;
679 rename_ctx.new_name = new_name;
682 &rename_ctx);
683 if (GNUNET_OK !=
685 GNUNET_log (
687 _ ("Failed to write subsystem default identifier map to `%s'.\n"),
689 ego->identifier = GNUNET_strdup (new_name);
690 fn_new = get_ego_filename (ego);
691 if (0 != rename (fn_old, fn_new))
693 GNUNET_free (fn_old);
694 GNUNET_free (fn_new);
695 GNUNET_free (old_name);
696 GNUNET_free (new_name);
697 notify_listeners (ego);
700 return;
701 }
702 }
703
704 /* failed to locate old name */
706 GNUNET_free (old_name);
707 GNUNET_free (new_name);
709}
710
711
719static void
720handle_ego_delete (void *cls, const char *section)
721{
722 const char *identifier = cls;
723 char *id;
724
726 section,
727 "DEFAULT_IDENTIFIER",
728 &id))
729 return;
730 if (0 != strcmp (id, identifier))
731 {
732 GNUNET_free (id);
733 return;
734 }
736 section,
737 "DEFAULT_IDENTIFIER",
738 NULL);
739 GNUNET_free (id);
740}
741
742
750static int
751check_delete_message (void *cls, const struct DeleteMessage *msg)
752{
753 uint16_t size;
754 uint16_t name_len;
755 const char *name;
756
757 size = ntohs (msg->header.size);
758 if (size <= sizeof(struct DeleteMessage))
759 {
760 GNUNET_break (0);
761 return GNUNET_SYSERR;
762 }
763 name = (const char *) &msg[1];
764 name_len = ntohs (msg->name_len);
765 if ((name_len + sizeof(struct DeleteMessage) != size) ||
766 (0 != ntohs (msg->reserved)) || ('\0' != name[name_len - 1]))
767 {
768 GNUNET_break (0);
769 return GNUNET_SYSERR;
770 }
771 return GNUNET_OK;
772}
773
774
782static void
783handle_delete_message (void *cls, const struct DeleteMessage *dm)
784{
785 struct Ego *ego;
786 char *name;
787 char *fn;
788 struct GNUNET_SERVICE_Client *client = cls;
789
790 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received DELETE message from client\n");
791 name = GNUNET_strdup ((const char *) &dm[1]);
792 GNUNET_STRINGS_utf8_tolower ((const char *) &dm[1], name);
793
794 for (ego = ego_head; NULL != ego; ego = ego->next)
795 {
796 if (0 == strcmp (ego->identifier, name))
797 {
801 ego->identifier);
802 if (GNUNET_OK !=
804 GNUNET_log (
806 _ ("Failed to write subsystem default identifier map to `%s'.\n"),
808 fn = get_ego_filename (ego);
809 if (0 != unlink (fn))
811 GNUNET_free (fn);
812 GNUNET_free (ego->identifier);
813 ego->identifier = NULL;
814 notify_listeners (ego);
815 GNUNET_free (ego);
819 return;
820 }
821 }
822
826}
827
828
829static int
831 void *buf,
832 size_t buf_size)
833{
834 int fd;
835 struct stat sb;
836
837 fd = open (filename,
838 O_RDONLY);
839 if (-1 == fd)
840 {
841 memset (buf,
842 0,
843 buf_size);
844 return GNUNET_SYSERR;
845 }
846 if (0 != fstat (fd,
847 &sb))
848 {
850 "stat",
851 filename);
852 GNUNET_assert (0 == close (fd));
853 memset (buf,
854 0,
855 buf_size);
856 return GNUNET_SYSERR;
857 }
858 if (sb.st_size != buf_size)
859 {
861 "File `%s' has wrong size (%llu), expected %llu bytes\n",
862 filename,
863 (unsigned long long) sb.st_size,
864 (unsigned long long) buf_size);
865 GNUNET_assert (0 == close (fd));
866 memset (buf,
867 0,
868 buf_size);
869 return GNUNET_SYSERR;
870 }
871 if (buf_size !=
872 read (fd,
873 buf,
874 buf_size))
875 {
877 "read",
878 filename);
879 GNUNET_assert (0 == close (fd));
880 memset (buf,
881 0,
882 buf_size);
883 return GNUNET_SYSERR;
884 }
885 GNUNET_assert (0 == close (fd));
886 return GNUNET_OK;
887}
888
889
900static int
902 const char *filename)
903{
904 struct Ego *ego;
905 const char *fn;
906
907 fn = strrchr (filename, (int) DIR_SEPARATOR);
908 if (NULL == fn)
909 {
910 GNUNET_break (0);
911 return GNUNET_OK;
912 }
913 ego = GNUNET_new (struct Ego);
914 if (GNUNET_OK !=
916 &ego->pk,
917 sizeof (ego->pk)))
918 {
919 GNUNET_free (ego);
921 _ ("Failed to parse ego information in `%s'\n"),
922 filename);
923 return GNUNET_OK;
924 }
926 "Loaded ego `%s'\n",
927 fn + 1);
928 ego->identifier = GNUNET_strdup (fn + 1);
930 return GNUNET_OK;
931}
932
933
941static void
942run (void *cls,
943 const struct GNUNET_CONFIGURATION_Handle *c,
945{
946 cfg = c;
949 "identity",
950 "EGODIR",
952 {
955 return;
956 }
957 if (GNUNET_OK !=
959 "identity",
960 "SUBSYSTEM_CFG",
962 {
964 "identity",
965 "SUBSYSTEM_CFG");
967 return;
968 }
970 "Loading subsystem configuration `%s'\n",
974 (GNUNET_OK !=
976 {
978 _ (
979 "Failed to parse subsystem identity configuration file `%s'\n"),
982 return;
983 }
984 stats = GNUNET_STATISTICS_create ("identity", cfg);
986 {
988 _ ("Failed to create directory `%s' for storing egos\n"),
990 }
993 NULL);
995}
996
997
1002 "identity",
1004 &run,
1007 NULL,
1008 GNUNET_MQ_hd_fixed_size (start_message,
1010 struct GNUNET_MessageHeader,
1011 NULL),
1012 GNUNET_MQ_hd_var_size (lookup_message,
1014 struct LookupMessage,
1015 NULL),
1016 GNUNET_MQ_hd_var_size (lookup_by_suffix_message,
1018 struct LookupMessage,
1019 NULL),
1022 struct CreateRequestMessage,
1023 NULL),
1024 GNUNET_MQ_hd_var_size (rename_message,
1026 struct RenameMessage,
1027 NULL),
1028 GNUNET_MQ_hd_var_size (delete_message,
1030 struct DeleteMessage,
1031 NULL),
1033
1034
1035/* end of gnunet-service-identity.c */
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static char * filename
static char * name
Name (label) of the records to list.
static struct GNUNET_IDENTITY_Handle * id
Handle to IDENTITY.
static struct GNUNET_SERVICE_Handle * service
Handle to our service instance.
static void handle_create_message(void *cls, const struct CreateRequestMessage *crm)
Handler for CREATE message from client, creates new identity.
static struct Ego * ego_tail
Tail of DLL of all egos.
static struct GNUNET_STATISTICS_Handle * stats
Handle to the statistics service.
static int check_lookup_message(void *cls, const struct LookupMessage *message)
Handler for LOOKUP message from client, sends information about ONE identity to the client immediatel...
static const struct GNUNET_CONFIGURATION_Handle * cfg
Handle to our current configuration.
static void send_result_code(struct GNUNET_SERVICE_Client *client, uint32_t result_code)
Send a result code back to the client.
static int check_create_message(void *cls, const struct CreateRequestMessage *msg)
Checks a GNUNET_MESSAGE_TYPE_IDENTITY_CREATE message.
static struct GNUNET_NotificationContext * nc
Notification context, simplifies client broadcasts.
static void handle_start_message(void *cls, const struct GNUNET_MessageHeader *message)
Handler for START message from client, sends information about all identities to the client immediate...
static int check_delete_message(void *cls, const struct DeleteMessage *msg)
Checks a GNUNET_MESSAGE_TYPE_IDENTITY_DELETE message.
static void handle_lookup_by_suffix_message(void *cls, const struct LookupMessage *message)
Handler for LOOKUP_BY_SUFFIX message from client, sends information about ONE identity to the client ...
static void shutdown_task(void *cls)
Task run during shutdown.
static char * subsystem_cfg_file
Configuration file name where subsystem information is kept.
static void * client_connect_cb(void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
Add a client to our list of active clients.
static int process_ego_file(void *cls, const char *filename)
Process the given file from the "EGODIR".
static void handle_ego_rename(void *cls, const char *section)
An ego was renamed; rename it in all subsystems where it is currently set as the default.
static void handle_rename_message(void *cls, const struct RenameMessage *rm)
Handler for RENAME message from client, creates new identity.
static int read_from_file(const char *filename, void *buf, size_t buf_size)
static void run(void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *service)
Handle network size estimate clients.
static void handle_lookup_message(void *cls, const struct LookupMessage *message)
Handler for LOOKUP message from client, sends information about ONE identity to the client immediatel...
static char * ego_directory
Directory where we store the identities.
static void notify_listeners(struct Ego *ego)
Send an updated message for the given ego to all listeners.
static char * get_ego_filename(struct Ego *ego)
Get the name of the file we use to store a given ego.
static void handle_delete_message(void *cls, const struct DeleteMessage *dm)
Handler for DELETE message from client, creates new identity.
static void client_disconnect_cb(void *cls, struct GNUNET_SERVICE_Client *client, void *app_ctx)
Called whenever a client is disconnected.
static struct GNUNET_MQ_Envelope * create_update_message(struct Ego *ego)
Create an update message with information about the current state of an ego.
GNUNET_SERVICE_MAIN("identity", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_fixed_size(start_message, GNUNET_MESSAGE_TYPE_IDENTITY_START, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_hd_var_size(lookup_message, GNUNET_MESSAGE_TYPE_IDENTITY_LOOKUP, struct LookupMessage, NULL), GNUNET_MQ_hd_var_size(lookup_by_suffix_message, GNUNET_MESSAGE_TYPE_IDENTITY_LOOKUP_BY_SUFFIX, struct LookupMessage, NULL), GNUNET_MQ_hd_var_size(create_message, GNUNET_MESSAGE_TYPE_IDENTITY_CREATE, struct CreateRequestMessage, NULL), GNUNET_MQ_hd_var_size(rename_message, GNUNET_MESSAGE_TYPE_IDENTITY_RENAME, struct RenameMessage, NULL), GNUNET_MQ_hd_var_size(delete_message, GNUNET_MESSAGE_TYPE_IDENTITY_DELETE, struct DeleteMessage, NULL), GNUNET_MQ_handler_end())
Define "main" method using service macro.
static int check_rename_message(void *cls, const struct RenameMessage *msg)
Checks a GNUNET_MESSAGE_TYPE_IDENTITY_RENAME message.
static void handle_ego_delete(void *cls, const char *section)
An ego was removed, remove it from all subsystems where it is currently set as the default.
static struct Ego * ego_head
Head of DLL of all egos.
static struct GNUNET_CONFIGURATION_Handle * subsystem_cfg
Handle to subsystem configuration which for each subsystem contains the name of the default ego.
static int check_lookup_by_suffix_message(void *cls, const struct LookupMessage *message)
Handler for LOOKUP message from client, sends information about ONE identity to the client immediatel...
Identity service; implements identity management for GNUnet.
Constants for network protocols.
API to create, modify and access statistics.
void GNUNET_CONFIGURATION_set_value_string(struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, const char *value)
Set a configuration value that should be a string.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_filename(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be the name of a file or directory.
void GNUNET_CONFIGURATION_iterate_sections(const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_CONFIGURATION_SectionIterator iter, void *iter_cls)
Iterate over all sections in the configuration.
void GNUNET_CONFIGURATION_destroy(struct GNUNET_CONFIGURATION_Handle *cfg)
Destroy configuration object.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_string(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be a string.
struct GNUNET_CONFIGURATION_Handle * GNUNET_CONFIGURATION_create(void)
Create a new configuration object.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_parse(struct GNUNET_CONFIGURATION_Handle *cfg, const char *filename)
Parse a configuration file, add all of the options in the file to the configuration environment.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_write(struct GNUNET_CONFIGURATION_Handle *cfg, const char *filename)
Write configuration file.
enum GNUNET_GenericReturnValue GNUNET_DISK_file_test(const char *fil)
Check that fil corresponds to a filename (of a file that exists and that is not a directory).
Definition: disk.c:482
enum GNUNET_GenericReturnValue GNUNET_DISK_fn_write(const char *fn, const void *buf, size_t buf_size, enum GNUNET_DISK_AccessPermissions mode)
Write a buffer to a file atomically.
Definition: disk.c:725
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_create(const char *dir)
Implementation of "mkdir -p".
Definition: disk.c:496
int GNUNET_DISK_directory_scan(const char *dir_name, GNUNET_FileNameCallback callback, void *callback_cls)
Scan a directory for files.
Definition: disk.c:814
@ GNUNET_DISK_PERM_USER_READ
Owner can read.
@ GNUNET_DISK_PERM_USER_WRITE
Owner can write.
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
#define GNUNET_log(kind,...)
ssize_t GNUNET_CRYPTO_private_key_get_length(const struct GNUNET_CRYPTO_PrivateKey *key)
Get the compacted length of a GNUNET_CRYPTO_PrivateKey.
Definition: crypto_pkey.c:64
ssize_t GNUNET_CRYPTO_write_private_key_to_buffer(const struct GNUNET_CRYPTO_PrivateKey *key, void *buffer, size_t len)
Writes a GNUNET_CRYPTO_PrivateKey to a compact buffer.
Definition: crypto_pkey.c:188
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_read_private_key_from_buffer(const void *buffer, size_t len, struct GNUNET_CRYPTO_PrivateKey *key, size_t *read)
Reads a GNUNET_CRYPTO_PrivateKey from a compact buffer.
Definition: crypto_pkey.c:163
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.
@ GNUNET_OK
@ GNUNET_YES
@ GNUNET_NO
@ GNUNET_SYSERR
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
void GNUNET_log_config_missing(enum GNUNET_ErrorType kind, const char *section, const char *option)
Log error message about missing configuration option.
#define GNUNET_log_strerror_file(level, cmd, filename)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
@ GNUNET_ERROR_TYPE_WARNING
@ GNUNET_ERROR_TYPE_ERROR
@ GNUNET_ERROR_TYPE_DEBUG
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
void GNUNET_notification_context_destroy(struct GNUNET_NotificationContext *nc)
Destroy the context, force disconnect for all subscribers.
Definition: nc.c:138
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:304
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
#define GNUNET_MQ_check_zero_termination(m)
Insert code for a "check_" function that verifies that a given variable-length message received over ...
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct.
Definition: gnunet_mq_lib.h:63
struct GNUNET_NotificationContext * GNUNET_notification_context_create(unsigned int queue_length)
Create a new notification context.
Definition: nc.c:122
void GNUNET_notification_context_broadcast(struct GNUNET_NotificationContext *nc, const struct GNUNET_MessageHeader *msg, int can_drop)
Send a message to all subscribers of this context.
Definition: nc.c:190
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:78
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_MQ_hd_fixed_size(name, code, str, ctx)
void GNUNET_notification_context_add(struct GNUNET_NotificationContext *nc, struct GNUNET_MQ_Handle *mq)
Add a subscriber to the notification context.
Definition: nc.c:161
#define GNUNET_MESSAGE_TYPE_IDENTITY_CREATE
Create new identity (client->service).
#define GNUNET_MESSAGE_TYPE_IDENTITY_START
First message send from identity client to service (to subscribe to updates).
#define GNUNET_MESSAGE_TYPE_IDENTITY_DELETE
Delete identity (client->service).
#define GNUNET_MESSAGE_TYPE_IDENTITY_LOOKUP
First message send from identity client to service to lookup a single ego.
#define GNUNET_MESSAGE_TYPE_IDENTITY_RESULT_CODE
Generic response from identity service with success and/or error message.
#define GNUNET_MESSAGE_TYPE_IDENTITY_RENAME
Rename existing identity (client->service).
#define GNUNET_MESSAGE_TYPE_IDENTITY_LOOKUP_BY_SUFFIX
First message send from identity client to service to lookup a single ego matching the given suffix (...
#define GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE
Update about identity status from service to clients.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:567
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received,...
Definition: scheduler.c:1340
void GNUNET_SERVICE_client_mark_monitor(struct GNUNET_SERVICE_Client *c)
Set the 'monitor' flag on this client.
Definition: service.c:2549
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2484
void GNUNET_SERVICE_client_disable_continue_warning(struct GNUNET_SERVICE_Client *c)
Disable the warning the server issues if a message is not acknowledged in a timely fashion.
Definition: service.c:2472
struct GNUNET_MQ_Handle * GNUNET_SERVICE_client_get_mq(struct GNUNET_SERVICE_Client *c)
Obtain the message queue of c.
Definition: service.c:2566
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2455
@ GNUNET_SERVICE_OPTION_NONE
Use defaults.
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).
enum GNUNET_GenericReturnValue GNUNET_STRINGS_utf8_tolower(const char *input, char *output)
Convert the utf-8 input string to lower case.
Definition: strings.c:450
Common type definitions for the identity service and API.
struct GNUNET_MESSENGER_Message * create_message(enum GNUNET_MESSENGER_MessageKind kind)
Creates and allocates a new message with a specific kind.
static unsigned int size
Size of the "table".
Definition: peer.c:68
#define DIR_SEPARATOR
Definition: platform.h:165
#define DIR_SEPARATOR_STR
Definition: platform.h:166
#define _(String)
GNU gettext support macro.
Definition: platform.h:178
const char * GNUNET_ErrorCode_get_hint(enum GNUNET_ErrorCode ec)
Returns a hint for a given error code.
@ GNUNET_EC_NONE
No error (success).
@ GNUNET_EC_IDENTITY_NOT_FOUND
Ego not found.
@ GNUNET_EC_IDENTITY_NAME_CONFLICT
Identifier already in use for another ego.
Client requests creation of an identity.
Definition: identity.h:151
uint16_t key_len
Key length.
Definition: identity.h:165
Client requests deletion of an identity.
Definition: identity.h:204
Information we keep about each ego.
struct Ego * prev
We keep egos in a DLL.
struct GNUNET_CRYPTO_PrivateKey pk
Private key of the ego.
char * identifier
String identifier for the ego.
struct Ego * next
We keep egos in a DLL.
A private key for an identity as per LSD0001.
Handle to a message queue.
Definition: mq.c:87
Header for all communications.
The notification context is the key datastructure for a convenience API used for transmission of noti...
Definition: nc.c:77
Handle to a client that is connected to a service.
Definition: service.c:246
Handle to a service.
Definition: service.c:117
Handle for the service.
Message from client to GNS service to lookup records.
Definition: gns.h:37
Closure for 'handle_ego_rename'.
const char * old_name
Old name.
const char * new_name
New name.
Client requests renaming of an identity.
Definition: identity.h:178
uint16_t old_name_len
Number of characters in the old name including 0-termination, in NBO.
Definition: identity.h:187
Answer from service to client about last operation; GET_DEFAULT maybe answered with this message on f...
Definition: identity.h:81
uint32_t result_code
Status code for the last operation, in NBO.
Definition: identity.h:91
Service informs client about status of a pseudonym.
Definition: identity.h:114
uint16_t end_of_list
Usually GNUNET_NO, GNUNET_YES to signal end of list.
Definition: identity.h:129
uint16_t key_len
Key length.
Definition: identity.h:134
uint16_t name_len
Number of bytes in ego name string including 0-termination, in NBO; 0 if the ego was deleted.
Definition: identity.h:124
struct GNUNET_MessageHeader header
Type: GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE.
Definition: identity.h:118