2 * This file is part of GNUnet
3 * Copyright (C) 2013 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.
22 * @author Gabor X Toth
25 * Social service; implements social interactions using the PSYC service.
32 #include "gnunet_util_lib.h"
33 #include "gnunet_psyc_service.h"
34 #include "gnunet_psyc_util_lib.h"
35 #include "gnunet_social_service.h"
38 #define LOG(kind,...) GNUNET_log_from (kind, "social-api",__VA_ARGS__)
43 struct GNUNET_SOCIAL_Ego
45 struct GNUNET_CRYPTO_EcdsaPublicKey pub_key;
46 struct GNUNET_HashCode pub_key_hash;
52 * Handle for a pseudonym of another user in the network.
54 struct GNUNET_SOCIAL_Nym
56 struct GNUNET_CRYPTO_EcdsaPublicKey pub_key;
57 struct GNUNET_HashCode pub_key_hash;
62 * Handle for an application.
64 struct GNUNET_SOCIAL_App
67 * Configuration to use.
69 const struct GNUNET_CONFIGURATION_Handle *cfg;
72 * Client connection to the service.
74 struct GNUNET_MQ_Handle *mq;
77 * Message to send on connect.
79 struct GNUNET_MQ_Envelope *connect_env;
82 * Time to wait until we try to reconnect on failure.
84 struct GNUNET_TIME_Relative reconnect_delay;
87 * Task for reconnecting when the listener fails.
89 struct GNUNET_SCHEDULER_Task *reconnect_task;
94 struct GNUNET_OP_Handle *op;
97 * Function called after disconnected from the service.
99 GNUNET_ContinuationCallback disconnect_cb;
102 * Closure for @a disconnect_cb.
104 void *disconnect_cls;
112 * Hash map of all egos.
113 * pub_key_hash -> struct GNUNET_SOCIAL_Ego *
115 struct GNUNET_CONTAINER_MultiHashMap *egos;
117 GNUNET_SOCIAL_AppEgoCallback ego_cb;
118 GNUNET_SOCIAL_AppHostPlaceCallback host_cb;
119 GNUNET_SOCIAL_AppGuestPlaceCallback guest_cb;
120 GNUNET_SOCIAL_AppConnectedCallback connected_cb;
125 struct GNUNET_SOCIAL_HostConnection
127 struct GNUNET_SOCIAL_App *app;
129 struct AppPlaceMessage plc_msg;
133 struct GNUNET_SOCIAL_GuestConnection
135 struct GNUNET_SOCIAL_App *app;
137 struct AppPlaceMessage plc_msg;
142 * Handle for a place where social interactions happen.
144 struct GNUNET_SOCIAL_Place
147 * Configuration to use.
149 const struct GNUNET_CONFIGURATION_Handle *cfg;
152 * Client connection to the service.
154 struct GNUNET_MQ_Handle *mq;
157 * Message to send on connect.
159 struct GNUNET_MQ_Envelope *connect_env;
162 * Time to wait until we try to reconnect on failure.
164 struct GNUNET_TIME_Relative reconnect_delay;
167 * Task for reconnecting when the listener fails.
169 struct GNUNET_SCHEDULER_Task *reconnect_task;
174 struct GNUNET_OP_Handle *op;
177 * Transmission handle.
179 struct GNUNET_PSYC_TransmitHandle *tmit;
182 * Slicer for processing incoming messages.
184 struct GNUNET_PSYC_Slicer *slicer;
187 * Function called after disconnected from the service.
189 GNUNET_ContinuationCallback disconnect_cb;
192 * Closure for @a disconnect_cb.
194 void *disconnect_cls;
197 * Public key of the place.
199 struct GNUNET_CRYPTO_EddsaPublicKey pub_key;
202 * Public key of the ego.
204 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
207 * Does this place belong to a host (#GNUNET_YES) or guest (#GNUNET_NO)?
214 * Host handle for a place that we entered.
216 struct GNUNET_SOCIAL_Host
218 struct GNUNET_SOCIAL_Place plc;
221 * Slicer for processing incoming messages from guests.
223 struct GNUNET_PSYC_Slicer *slicer;
225 GNUNET_SOCIAL_HostEnterCallback enter_cb;
227 GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb;
229 GNUNET_SOCIAL_FarewellCallback farewell_cb;
232 * Closure for callbacks.
236 struct GNUNET_SOCIAL_Nym *notice_place_leave_nym;
237 struct GNUNET_PSYC_Environment *notice_place_leave_env;
242 * Guest handle for place that we entered.
244 struct GNUNET_SOCIAL_Guest
246 struct GNUNET_SOCIAL_Place plc;
248 GNUNET_SOCIAL_GuestEnterCallback enter_cb;
250 GNUNET_SOCIAL_EntryDecisionCallback entry_dcsn_cb;
253 * Closure for callbacks.
260 * Hash map of all nyms.
261 * pub_key_hash -> struct GNUNET_SOCIAL_Nym *
263 struct GNUNET_CONTAINER_MultiHashMap *nyms;
267 * Handle for an announcement request.
269 struct GNUNET_SOCIAL_Announcement
278 struct GNUNET_SOCIAL_TalkRequest
287 struct GNUNET_SOCIAL_HistoryRequest
292 struct GNUNET_SOCIAL_Place *plc;
300 * Slicer for processing incoming messages.
302 struct GNUNET_PSYC_Slicer *slicer;
305 * Function to call when the operation finished.
307 GNUNET_ResultCallback result_cb;
310 * Closure for @a result_cb.
316 struct GNUNET_SOCIAL_LookHandle
321 struct GNUNET_SOCIAL_Place *plc;
329 * State variable result callback.
331 GNUNET_PSYC_StateVarCallback var_cb;
334 * Function to call when the operation finished.
336 GNUNET_ResultCallback result_cb;
339 * Name of current modifier being received.
344 * Size of current modifier value being received.
346 size_t mod_value_size;
349 * Remaining size of current modifier value still to be received.
351 size_t mod_value_remaining;
354 * Closure for @a result_cb.
360 struct ZoneAddPlaceHandle
362 GNUNET_ResultCallback result_cb;
367 struct ZoneAddNymHandle
369 GNUNET_ResultCallback result_cb;
376 static struct GNUNET_SOCIAL_Nym *
377 nym_get_or_create (const struct GNUNET_CRYPTO_EcdsaPublicKey *pub_key)
379 struct GNUNET_SOCIAL_Nym *nym = NULL;
380 struct GNUNET_HashCode pub_key_hash;
385 GNUNET_CRYPTO_hash (pub_key, sizeof (*pub_key), &pub_key_hash);
388 nyms = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
390 nym = GNUNET_CONTAINER_multihashmap_get (nyms, &pub_key_hash);
394 nym = GNUNET_new (struct GNUNET_SOCIAL_Nym);
395 nym->pub_key = *pub_key;
396 nym->pub_key_hash = pub_key_hash;
397 GNUNET_CONTAINER_multihashmap_put (nyms, &nym->pub_key_hash, nym,
398 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
405 nym_destroy (struct GNUNET_SOCIAL_Nym *nym)
407 GNUNET_CONTAINER_multihashmap_remove (nyms, &nym->pub_key_hash, nym);
412 /*** MESSAGE HANDLERS ***/
414 /** _notice_place_leave from guests */
417 host_recv_notice_place_leave_method (void *cls,
418 const struct GNUNET_PSYC_MessageHeader *msg,
419 const struct GNUNET_PSYC_MessageMethod *meth,
421 const char *method_name)
423 struct GNUNET_SOCIAL_Host *hst = cls;
425 if (0 == memcmp (&(struct GNUNET_CRYPTO_EcdsaPublicKey) {},
426 &msg->slave_pub_key, sizeof (msg->slave_pub_key)))
429 struct GNUNET_SOCIAL_Nym *nym = nym_get_or_create (&msg->slave_pub_key);
431 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
432 "Host received method for message ID %" PRIu64 " from nym %s: %s\n",
433 message_id, GNUNET_h2s (&nym->pub_key_hash), method_name);
435 hst->notice_place_leave_nym = (struct GNUNET_SOCIAL_Nym *) nym;
436 hst->notice_place_leave_env = GNUNET_PSYC_env_create ();
438 char *str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&hst->notice_place_leave_nym->pub_key);
439 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
440 "_notice_place_leave: got method from nym %s (%s).\n",
441 GNUNET_h2s (&hst->notice_place_leave_nym->pub_key_hash), str);
447 host_recv_notice_place_leave_modifier (void *cls,
448 const struct GNUNET_PSYC_MessageHeader *msg,
449 const struct GNUNET_MessageHeader *pmsg,
451 enum GNUNET_PSYC_Operator oper,
455 uint16_t full_value_size)
457 struct GNUNET_SOCIAL_Host *hst = cls;
458 if (NULL == hst->notice_place_leave_env)
461 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
462 "Host received modifier for _notice_place_leave message with ID %" PRIu64 ":\n"
464 message_id, oper, name, value_size, (const char *) value);
466 /* skip _nym, it's added later in eom() */
467 if (0 == memcmp (name, "_nym", sizeof ("_nym"))
468 || 0 == memcmp (name, "_nym_", sizeof ("_nym_") - 1))
471 GNUNET_PSYC_env_add (hst->notice_place_leave_env,
472 GNUNET_PSYC_OP_SET, name, value, value_size);
477 host_recv_notice_place_leave_eom (void *cls,
478 const struct GNUNET_PSYC_MessageHeader *msg,
479 const struct GNUNET_MessageHeader *pmsg,
481 uint8_t is_cancelled)
483 struct GNUNET_SOCIAL_Host *hst = cls;
484 if (NULL == hst->notice_place_leave_env)
487 char *str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&hst->notice_place_leave_nym->pub_key);
488 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
489 "_notice_place_leave: got EOM from nym %s (%s).\n",
490 GNUNET_h2s (&hst->notice_place_leave_nym->pub_key_hash), str);
493 if (GNUNET_YES != is_cancelled)
495 if (NULL != hst->farewell_cb)
496 hst->farewell_cb (hst->cb_cls, hst->notice_place_leave_nym,
497 hst->notice_place_leave_env);
498 /* announce leaving guest to place */
499 GNUNET_PSYC_env_add (hst->notice_place_leave_env, GNUNET_PSYC_OP_SET,
500 "_nym", hst->notice_place_leave_nym,
501 sizeof (*hst->notice_place_leave_nym));
502 GNUNET_SOCIAL_host_announce (hst, "_notice_place_leave",
503 hst->notice_place_leave_env,
504 NULL, NULL, GNUNET_SOCIAL_ANNOUNCE_NONE);
505 nym_destroy (hst->notice_place_leave_nym);
507 GNUNET_PSYC_env_destroy (hst->notice_place_leave_env);
508 hst->notice_place_leave_env = NULL;
516 check_place_result (void *cls,
517 const struct GNUNET_OperationResultMessage *res)
519 uint16_t size = ntohs (res->header.size);
520 if (size < sizeof (*res))
521 { /* Error, message too small. */
523 return GNUNET_SYSERR;
530 handle_place_result (void *cls,
531 const struct GNUNET_OperationResultMessage *res)
533 struct GNUNET_SOCIAL_Place *plc = cls;
535 uint16_t size = ntohs (res->header.size);
536 uint16_t data_size = size - sizeof (*res);
537 const char *data = (0 < data_size) ? (const char *) &res[1] : NULL;
539 GNUNET_OP_result (plc->op, GNUNET_ntohll (res->op_id),
540 GNUNET_ntohll (res->result_code),
541 data, data_size, NULL);
546 check_app_result (void *cls,
547 const struct GNUNET_OperationResultMessage *res)
549 uint16_t size = ntohs (res->header.size);
550 if (size < sizeof (*res))
551 { /* Error, message too small. */
553 return GNUNET_SYSERR;
560 handle_app_result (void *cls,
561 const struct GNUNET_OperationResultMessage *res)
563 struct GNUNET_SOCIAL_App *app = cls;
565 uint16_t size = ntohs (res->header.size);
566 uint16_t data_size = size - sizeof (*res);
567 const char *data = (0 < data_size) ? (const char *) &res[1] : NULL;
569 GNUNET_OP_result (app->op, GNUNET_ntohll (res->op_id),
570 GNUNET_ntohll (res->result_code),
571 data, data_size, NULL);
576 op_recv_history_result (void *cls, int64_t result,
577 const void *err_msg, uint16_t err_msg_size)
579 LOG (GNUNET_ERROR_TYPE_DEBUG,
580 "Received history replay result: %" PRId64 ".\n", result);
582 struct GNUNET_SOCIAL_HistoryRequest *hist = cls;
584 if (NULL != hist->result_cb)
585 hist->result_cb (hist->cls, result, err_msg, err_msg_size);
592 op_recv_state_result (void *cls, int64_t result,
593 const void *err_msg, uint16_t err_msg_size)
595 LOG (GNUNET_ERROR_TYPE_DEBUG,
596 "Received state request result: %" PRId64 ".\n", result);
598 struct GNUNET_SOCIAL_LookHandle *look = cls;
600 if (NULL != look->result_cb)
601 look->result_cb (look->cls, result, err_msg, err_msg_size);
608 check_place_history_result (void *cls,
609 const struct GNUNET_OperationResultMessage *res)
611 struct GNUNET_PSYC_MessageHeader *
612 pmsg = (struct GNUNET_PSYC_MessageHeader *) GNUNET_MQ_extract_nested_mh (res);
613 uint16_t size = ntohs (res->header.size);
615 if (NULL == pmsg || size < sizeof (*res) + sizeof (*pmsg))
616 { /* Error, message too small. */
618 return GNUNET_SYSERR;
625 handle_place_history_result (void *cls,
626 const struct GNUNET_OperationResultMessage *res)
628 struct GNUNET_SOCIAL_Place *plc = cls;
629 struct GNUNET_PSYC_MessageHeader *
630 pmsg = (struct GNUNET_PSYC_MessageHeader *) GNUNET_MQ_extract_nested_mh (res);
632 LOG (GNUNET_ERROR_TYPE_DEBUG,
633 "%p Received historic fragment for message #%" PRIu64 ".\n",
634 plc, GNUNET_ntohll (pmsg->message_id));
636 GNUNET_ResultCallback result_cb = NULL;
637 struct GNUNET_SOCIAL_HistoryRequest *hist = NULL;
639 if (GNUNET_YES != GNUNET_OP_get (plc->op,
640 GNUNET_ntohll (res->op_id),
641 &result_cb, (void *) &hist, NULL))
642 { /* Operation not found. */
643 LOG (GNUNET_ERROR_TYPE_WARNING,
644 "%p Replay operation not found for historic fragment of message #%"
646 plc, GNUNET_ntohll (pmsg->message_id));
650 GNUNET_PSYC_slicer_message (hist->slicer,
651 (const struct GNUNET_PSYC_MessageHeader *) pmsg);
656 check_place_state_result (void *cls,
657 const struct GNUNET_OperationResultMessage *res)
659 const struct GNUNET_MessageHeader *mod = GNUNET_MQ_extract_nested_mh (res);
663 LOG (GNUNET_ERROR_TYPE_WARNING,
664 "Invalid modifier in state result\n");
665 return GNUNET_SYSERR;
668 uint16_t size = ntohs (res->header.size);
669 uint16_t mod_size = ntohs (mod->size);
670 if (size - sizeof (*res) != mod_size)
673 LOG (GNUNET_ERROR_TYPE_WARNING,
674 "Invalid modifier size in state result: %u - %u != %u\n",
675 ntohs (res->header.size), sizeof (*res), mod_size);
676 return GNUNET_SYSERR;
683 handle_place_state_result (void *cls,
684 const struct GNUNET_OperationResultMessage *res)
686 struct GNUNET_SOCIAL_Place *plc = cls;
688 GNUNET_ResultCallback result_cb = NULL;
689 struct GNUNET_SOCIAL_LookHandle *look = NULL;
691 if (GNUNET_YES != GNUNET_OP_get (plc->op,
692 GNUNET_ntohll (res->op_id),
693 &result_cb, (void *) &look, NULL))
694 { /* Operation not found. */
698 const struct GNUNET_MessageHeader *mod = GNUNET_MQ_extract_nested_mh (res);
699 uint16_t mod_size = ntohs (mod->size);
701 switch (ntohs (mod->type))
703 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MODIFIER:
705 const struct GNUNET_PSYC_MessageModifier *
706 pmod = (const struct GNUNET_PSYC_MessageModifier *) mod;
708 const char *name = (const char *) &pmod[1];
709 uint16_t name_size = ntohs (pmod->name_size);
711 || mod_size - sizeof (*pmod) < name_size
712 || '\0' != name[name_size - 1])
715 LOG (GNUNET_ERROR_TYPE_WARNING,
716 "Invalid modifier name in state result\n");
719 look->mod_value_size = ntohs (pmod->value_size);
720 look->var_cb (look->cls, mod, name, name + name_size,
721 mod_size - sizeof (*mod) - name_size,
722 look->mod_value_size);
723 if (look->mod_value_size > mod_size - sizeof (*mod) - name_size)
725 look->mod_value_remaining = look->mod_value_size;
726 look->mod_name = GNUNET_malloc (name_size);
727 GNUNET_memcpy (look->mod_name, name, name_size);
732 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MOD_CONT:
733 look->var_cb (look->cls, mod, look->mod_name, (const char *) &mod[1],
734 mod_size - sizeof (*mod), look->mod_value_size);
735 look->mod_value_remaining -= mod_size - sizeof (*mod);
736 if (0 == look->mod_value_remaining)
738 GNUNET_free (look->mod_name);
746 handle_place_message_ack (void *cls,
747 const struct GNUNET_MessageHeader *msg)
749 struct GNUNET_SOCIAL_Place *plc = cls;
751 GNUNET_PSYC_transmit_got_ack (plc->tmit);
756 check_place_message (void *cls,
757 const struct GNUNET_PSYC_MessageHeader *pmsg)
764 handle_place_message (void *cls,
765 const struct GNUNET_PSYC_MessageHeader *pmsg)
767 struct GNUNET_SOCIAL_Place *plc = cls;
769 GNUNET_PSYC_slicer_message (plc->slicer, pmsg);
774 check_host_message (void *cls,
775 const struct GNUNET_PSYC_MessageHeader *pmsg)
782 handle_host_message (void *cls,
783 const struct GNUNET_PSYC_MessageHeader *pmsg)
785 struct GNUNET_SOCIAL_Host *hst = cls;
787 GNUNET_PSYC_slicer_message (hst->slicer, pmsg);
788 GNUNET_PSYC_slicer_message (hst->plc.slicer, pmsg);
793 handle_host_enter_ack (void *cls,
794 const struct HostEnterAck *hack)
796 struct GNUNET_SOCIAL_Host *hst = cls;
798 hst->plc.pub_key = hack->place_pub_key;
800 int32_t result = ntohl (hack->result_code);
801 if (NULL != hst->enter_cb)
802 hst->enter_cb (hst->cb_cls, result, &hack->place_pub_key,
803 GNUNET_ntohll (hack->max_message_id));
808 check_host_enter_request (void *cls,
809 const struct GNUNET_PSYC_JoinRequestMessage *req)
816 handle_host_enter_request (void *cls,
817 const struct GNUNET_PSYC_JoinRequestMessage *req)
819 struct GNUNET_SOCIAL_Host *hst = cls;
821 if (NULL == hst->answer_door_cb)
824 const char *method_name = NULL;
825 struct GNUNET_PSYC_Environment *env = NULL;
826 struct GNUNET_PSYC_MessageHeader *entry_pmsg = NULL;
827 const void *data = NULL;
828 uint16_t data_size = 0;
830 const struct GNUNET_PSYC_Message *join_msg = NULL;
834 if (sizeof (*req) + sizeof (*join_msg) <= ntohs (req->header.size))
836 join_msg = (struct GNUNET_PSYC_Message *) GNUNET_MQ_extract_nested_mh (req);
837 LOG (GNUNET_ERROR_TYPE_DEBUG,
838 "Received join_msg of type %u and size %u.\n",
839 ntohs (join_msg->header.type), ntohs (join_msg->header.size));
841 env = GNUNET_PSYC_env_create ();
842 entry_pmsg = GNUNET_PSYC_message_header_create_from_psyc (join_msg);
843 if (GNUNET_OK != GNUNET_PSYC_message_parse (entry_pmsg, &method_name, env,
847 str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&req->slave_pub_key);
848 LOG (GNUNET_ERROR_TYPE_WARNING,
849 "Ignoring invalid entry request from nym %s.\n",
856 struct GNUNET_SOCIAL_Nym *nym = nym_get_or_create (&req->slave_pub_key);
857 hst->answer_door_cb (hst->cb_cls, nym, method_name, env,
862 GNUNET_PSYC_env_destroy (env);
863 if (NULL != entry_pmsg)
864 GNUNET_free (entry_pmsg);
869 handle_guest_enter_ack (void *cls,
870 const struct GNUNET_PSYC_CountersResultMessage *cres)
872 struct GNUNET_SOCIAL_Guest *gst = cls;
874 int32_t result = ntohl (cres->result_code);
875 if (NULL != gst->enter_cb)
876 gst->enter_cb (gst->cb_cls, result, &gst->plc.pub_key,
877 GNUNET_ntohll (cres->max_message_id));
882 check_guest_enter_decision (void *cls,
883 const struct GNUNET_PSYC_JoinDecisionMessage *dcsn)
890 handle_guest_enter_decision (void *cls,
891 const struct GNUNET_PSYC_JoinDecisionMessage *dcsn)
893 struct GNUNET_SOCIAL_Guest *gst = cls;
895 struct GNUNET_PSYC_Message *pmsg = NULL;
896 if (ntohs (dcsn->header.size) > sizeof (*dcsn))
897 pmsg = (struct GNUNET_PSYC_Message *) GNUNET_MQ_extract_nested_mh (dcsn);
899 if (NULL != gst->entry_dcsn_cb)
900 gst->entry_dcsn_cb (gst->cb_cls, ntohl (dcsn->is_admitted), pmsg);
905 check_app_ego (void *cls,
906 const struct AppEgoMessage *emsg)
913 handle_app_ego (void *cls,
914 const struct AppEgoMessage *emsg)
916 struct GNUNET_SOCIAL_App *app = cls;
918 uint16_t name_size = ntohs (emsg->header.size) - sizeof (*emsg);
920 struct GNUNET_HashCode ego_pub_hash;
921 GNUNET_CRYPTO_hash (&emsg->ego_pub_key, sizeof (emsg->ego_pub_key),
924 struct GNUNET_SOCIAL_Ego *
925 ego = GNUNET_CONTAINER_multihashmap_get (app->egos, &ego_pub_hash);
928 ego = GNUNET_malloc (sizeof (*ego));
929 ego->pub_key = emsg->ego_pub_key;
930 ego->name = GNUNET_malloc (name_size);
931 GNUNET_memcpy (ego->name, &emsg[1], name_size);
935 ego->name = GNUNET_realloc (ego->name, name_size);
936 GNUNET_memcpy (ego->name, &emsg[1], name_size);
939 GNUNET_CONTAINER_multihashmap_put (app->egos, &ego_pub_hash, ego,
940 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
942 if (NULL != app->ego_cb)
943 app->ego_cb (app->cb_cls, ego, &ego->pub_key, ego->name);
948 handle_app_ego_end (void *cls,
949 const struct GNUNET_MessageHeader *msg)
951 //struct GNUNET_SOCIAL_App *app = cls;
956 check_app_place (void *cls,
957 const struct AppPlaceMessage *pmsg)
964 handle_app_place (void *cls,
965 const struct AppPlaceMessage *pmsg)
967 struct GNUNET_SOCIAL_App *app = cls;
969 if ((GNUNET_YES == pmsg->is_host && NULL == app->host_cb)
970 || (GNUNET_NO == pmsg->is_host && NULL == app->guest_cb))
973 struct GNUNET_HashCode ego_pub_hash;
974 GNUNET_CRYPTO_hash (&pmsg->ego_pub_key, sizeof (pmsg->ego_pub_key),
976 struct GNUNET_SOCIAL_Ego *
977 ego = GNUNET_CONTAINER_multihashmap_get (app->egos, &ego_pub_hash);
980 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failure to obtain ego %s.\n",
981 GNUNET_h2s (&ego_pub_hash));
986 if (GNUNET_YES == pmsg->is_host)
988 if (NULL != app->host_cb) {
989 struct GNUNET_SOCIAL_HostConnection *hconn = GNUNET_malloc (sizeof (*hconn));
991 hconn->plc_msg = *pmsg;
992 app->host_cb (app->cb_cls, hconn, ego, &pmsg->place_pub_key, pmsg->place_state);
996 else if (NULL != app->guest_cb)
998 struct GNUNET_SOCIAL_GuestConnection *gconn = GNUNET_malloc (sizeof (*gconn));
1000 gconn->plc_msg = *pmsg;
1001 app->guest_cb (app->cb_cls, gconn, ego, &pmsg->place_pub_key, pmsg->place_state);
1002 GNUNET_free (gconn);
1008 handle_app_place_end (void *cls,
1009 const struct GNUNET_MessageHeader *msg)
1011 struct GNUNET_SOCIAL_App *app = cls;
1013 if (NULL != app->connected_cb)
1014 app->connected_cb (app->cb_cls);
1018 /*** CLEANUP / DISCONNECT ***/
1022 host_cleanup (struct GNUNET_SOCIAL_Host *hst)
1024 if (NULL != hst->slicer)
1026 GNUNET_PSYC_slicer_destroy (hst->slicer);
1034 guest_cleanup (struct GNUNET_SOCIAL_Guest *gst)
1041 place_cleanup (struct GNUNET_SOCIAL_Place *plc)
1043 struct GNUNET_HashCode place_pub_hash;
1044 GNUNET_CRYPTO_hash (&plc->pub_key, sizeof (plc->pub_key), &place_pub_hash);
1045 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1046 "%s place cleanup: %s\n",
1047 GNUNET_YES == plc->is_host ? "host" : "guest",
1048 GNUNET_h2s (&place_pub_hash));
1050 if (NULL != plc->tmit)
1052 GNUNET_PSYC_transmit_destroy (plc->tmit);
1055 if (NULL != plc->connect_env)
1057 GNUNET_MQ_discard (plc->connect_env);
1058 plc->connect_env = NULL;
1060 if (NULL != plc->mq)
1062 GNUNET_MQ_destroy (plc->mq);
1065 if (NULL != plc->disconnect_cb)
1067 plc->disconnect_cb (plc->disconnect_cls);
1068 plc->disconnect_cb = NULL;
1071 (GNUNET_YES == plc->is_host)
1072 ? host_cleanup ((struct GNUNET_SOCIAL_Host *) plc)
1073 : guest_cleanup ((struct GNUNET_SOCIAL_Guest *) plc);
1078 place_disconnect (struct GNUNET_SOCIAL_Place *plc,
1079 GNUNET_ContinuationCallback cb,
1082 plc->disconnect_cb = cb;
1083 plc->disconnect_cls = cls;
1085 if (NULL != plc->mq)
1087 struct GNUNET_MQ_Envelope *env = GNUNET_MQ_get_last_envelope (plc->mq);
1090 GNUNET_MQ_notify_sent (env, (GNUNET_SCHEDULER_TaskCallback) place_cleanup, plc);
1094 place_cleanup (plc);
1099 place_cleanup (plc);
1105 place_leave (struct GNUNET_SOCIAL_Place *plc)
1107 struct GNUNET_MessageHeader *msg;
1108 struct GNUNET_MQ_Envelope *
1109 env = GNUNET_MQ_msg (msg, GNUNET_MESSAGE_TYPE_SOCIAL_PLACE_LEAVE);
1111 GNUNET_MQ_send (plc->mq, env);
1119 host_connect (struct GNUNET_SOCIAL_Host *hst);
1123 host_reconnect (void *cls)
1130 * Host client disconnected from service.
1132 * Reconnect after backoff period.
1135 host_disconnected (void *cls, enum GNUNET_MQ_Error error)
1137 struct GNUNET_SOCIAL_Host *hst = cls;
1138 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1140 LOG (GNUNET_ERROR_TYPE_DEBUG,
1141 "Host client disconnected (%d), re-connecting\n",
1143 if (NULL != plc->tmit)
1145 GNUNET_PSYC_transmit_destroy (plc->tmit);
1148 if (NULL != plc->mq)
1150 GNUNET_MQ_destroy (plc->mq);
1154 plc->reconnect_task = GNUNET_SCHEDULER_add_delayed (plc->reconnect_delay,
1157 plc->reconnect_delay = GNUNET_TIME_STD_BACKOFF (plc->reconnect_delay);
1162 host_connect (struct GNUNET_SOCIAL_Host *hst)
1164 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1166 struct GNUNET_MQ_MessageHandler handlers[] = {
1167 GNUNET_MQ_hd_fixed_size (host_enter_ack,
1168 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER_ACK,
1169 struct HostEnterAck,
1171 GNUNET_MQ_hd_var_size (host_enter_request,
1172 GNUNET_MESSAGE_TYPE_PSYC_JOIN_REQUEST,
1173 struct GNUNET_PSYC_JoinRequestMessage,
1175 GNUNET_MQ_hd_var_size (host_message,
1176 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE,
1177 struct GNUNET_PSYC_MessageHeader,
1179 GNUNET_MQ_hd_fixed_size (place_message_ack,
1180 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK,
1181 struct GNUNET_MessageHeader,
1183 GNUNET_MQ_hd_var_size (place_history_result,
1184 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT,
1185 struct GNUNET_OperationResultMessage,
1187 GNUNET_MQ_hd_var_size (place_state_result,
1188 GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT,
1189 struct GNUNET_OperationResultMessage,
1191 GNUNET_MQ_hd_var_size (place_result,
1192 GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE,
1193 struct GNUNET_OperationResultMessage,
1195 GNUNET_MQ_handler_end ()
1198 plc->mq = GNUNET_CLIENT_connect (plc->cfg, "social",
1199 handlers, host_disconnected, hst);
1200 GNUNET_assert (NULL != plc->mq);
1201 plc->tmit = GNUNET_PSYC_transmit_create (plc->mq);
1203 GNUNET_MQ_send_copy (plc->mq, plc->connect_env);
1208 * Enter a place as host.
1210 * A place is created upon first entering, and it is active until permanently
1211 * left using GNUNET_SOCIAL_host_leave().
1214 * Application handle.
1216 * Identity of the host.
1218 * Policy specifying entry and history restrictions for the place.
1220 * Slicer to handle incoming messages.
1222 * Function called when the place is entered and ready to use.
1223 * @param answer_door_cb
1224 * Function to handle new nyms that want to enter.
1225 * @param farewell_cb
1226 * Function to handle departing nyms.
1228 * Closure for the callbacks.
1230 * @return Handle for the host. This handle contains the pubkey.
1232 struct GNUNET_SOCIAL_Host *
1233 GNUNET_SOCIAL_host_enter (const struct GNUNET_SOCIAL_App *app,
1234 const struct GNUNET_SOCIAL_Ego *ego,
1235 enum GNUNET_PSYC_Policy policy,
1236 struct GNUNET_PSYC_Slicer *slicer,
1237 GNUNET_SOCIAL_HostEnterCallback enter_cb,
1238 GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb,
1239 GNUNET_SOCIAL_FarewellCallback farewell_cb,
1242 struct GNUNET_SOCIAL_Host *hst = GNUNET_malloc (sizeof (*hst));
1243 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1245 plc->cfg = app->cfg;
1246 plc->is_host = GNUNET_YES;
1247 plc->slicer = slicer;
1249 hst->enter_cb = enter_cb;
1250 hst->answer_door_cb = answer_door_cb;
1251 hst->farewell_cb = farewell_cb;
1254 plc->op = GNUNET_OP_create ();
1256 hst->slicer = GNUNET_PSYC_slicer_create ();
1257 GNUNET_PSYC_slicer_method_add (hst->slicer, "_notice_place_leave", NULL,
1258 host_recv_notice_place_leave_method,
1259 host_recv_notice_place_leave_modifier,
1260 NULL, host_recv_notice_place_leave_eom, hst);
1262 uint16_t app_id_size = strlen (app->id) + 1;
1263 struct HostEnterRequest *hreq;
1264 plc->connect_env = GNUNET_MQ_msg_extra (hreq, app_id_size,
1265 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER);
1266 hreq->policy = policy;
1267 hreq->ego_pub_key = ego->pub_key;
1268 GNUNET_memcpy (&hreq[1], app->id, app_id_size);
1276 * Reconnect to an already entered place as host.
1279 * Host connection handle.
1280 * @see GNUNET_SOCIAL_app_connect() & GNUNET_SOCIAL_AppHostPlaceCallback()
1282 * Slicer to handle incoming messages.
1284 * Function called when the place is entered and ready to use.
1285 * @param answer_door_cb
1286 * Function to handle new nyms that want to enter.
1287 * @param farewell_cb
1288 * Function to handle departing nyms.
1290 * Closure for the callbacks.
1292 * @return Handle for the host.
1294 struct GNUNET_SOCIAL_Host *
1295 GNUNET_SOCIAL_host_enter_reconnect (struct GNUNET_SOCIAL_HostConnection *hconn,
1296 struct GNUNET_PSYC_Slicer *slicer,
1297 GNUNET_SOCIAL_HostEnterCallback enter_cb,
1298 GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb,
1299 GNUNET_SOCIAL_FarewellCallback farewell_cb,
1302 struct GNUNET_SOCIAL_Host *hst = GNUNET_malloc (sizeof (*hst));
1303 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1305 hst->enter_cb = enter_cb;
1306 hst->answer_door_cb = answer_door_cb;
1307 hst->farewell_cb = farewell_cb;
1310 plc->cfg = hconn->app->cfg;
1311 plc->is_host = GNUNET_YES;
1312 plc->slicer = slicer;
1313 plc->pub_key = hconn->plc_msg.place_pub_key;
1314 plc->ego_pub_key = hconn->plc_msg.ego_pub_key;
1316 plc->op = GNUNET_OP_create ();
1318 hst->slicer = GNUNET_PSYC_slicer_create ();
1319 GNUNET_PSYC_slicer_method_add (hst->slicer, "_notice_place_leave", NULL,
1320 host_recv_notice_place_leave_method,
1321 host_recv_notice_place_leave_modifier,
1322 NULL, host_recv_notice_place_leave_eom, hst);
1324 size_t app_id_size = strlen (hconn->app->id) + 1;
1325 struct HostEnterRequest *hreq;
1326 plc->connect_env = GNUNET_MQ_msg_extra (hreq, app_id_size,
1327 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER);
1328 hreq->place_pub_key = hconn->plc_msg.place_pub_key;
1329 hreq->ego_pub_key = hconn->plc_msg.ego_pub_key;
1330 GNUNET_memcpy (&hreq[1], hconn->app->id, app_id_size);
1338 * Decision whether to admit @a nym into the place or refuse entry.
1341 * Host of the place.
1343 * Handle for the entity that wanted to enter.
1344 * @param is_admitted
1345 * #GNUNET_YES if @a nym is admitted,
1346 * #GNUNET_NO if @a nym is refused entry,
1347 * #GNUNET_SYSERR if we cannot answer the request.
1348 * @param method_name
1349 * Method name for the rejection message.
1351 * Environment containing variables for the message, or NULL.
1353 * Data for the rejection message to send back.
1355 * Number of bytes in @a data for method.
1356 * @return #GNUNET_OK on success,
1357 * #GNUNET_SYSERR if the message is too large.
1360 GNUNET_SOCIAL_host_entry_decision (struct GNUNET_SOCIAL_Host *hst,
1361 struct GNUNET_SOCIAL_Nym *nym,
1363 const struct GNUNET_PSYC_Message *entry_resp)
1365 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1366 struct GNUNET_PSYC_JoinDecisionMessage *dcsn;
1367 uint16_t entry_resp_size
1368 = (NULL != entry_resp) ? ntohs (entry_resp->header.size) : 0;
1370 if (GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD < sizeof (*dcsn) + entry_resp_size)
1371 return GNUNET_SYSERR;
1373 struct GNUNET_MQ_Envelope *
1374 env = GNUNET_MQ_msg_extra (dcsn, entry_resp_size,
1375 GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION);
1376 dcsn->is_admitted = htonl (is_admitted);
1377 dcsn->slave_pub_key = nym->pub_key;
1379 if (0 < entry_resp_size)
1380 GNUNET_memcpy (&dcsn[1], entry_resp, entry_resp_size);
1382 GNUNET_MQ_send (plc->mq, env);
1388 * Throw @a nym out of the place.
1390 * The @a nym reference will remain valid until the
1391 * #GNUNET_SOCIAL_FarewellCallback is invoked,
1392 * which should be very soon after this call.
1395 * Host of the place.
1397 * Handle for the entity to be ejected.
1399 * Environment for the message or NULL.
1402 GNUNET_SOCIAL_host_eject (struct GNUNET_SOCIAL_Host *hst,
1403 const struct GNUNET_SOCIAL_Nym *nym,
1404 struct GNUNET_PSYC_Environment *e)
1406 struct GNUNET_PSYC_Environment *env = e;
1408 env = GNUNET_PSYC_env_create ();
1409 GNUNET_PSYC_env_add (env, GNUNET_PSYC_OP_SET,
1410 "_nym", &nym->pub_key, sizeof (nym->pub_key));
1411 GNUNET_SOCIAL_host_announce (hst, "_notice_place_leave", env, NULL, NULL,
1412 GNUNET_SOCIAL_ANNOUNCE_NONE);
1414 GNUNET_PSYC_env_destroy (env);
1419 * Get the public key of @a ego.
1424 * @return Public key of ego.
1426 const struct GNUNET_CRYPTO_EcdsaPublicKey *
1427 GNUNET_SOCIAL_ego_get_pub_key (const struct GNUNET_SOCIAL_Ego *ego)
1429 return &ego->pub_key;
1434 * Get the hash of the public key of @a ego.
1439 * @return Hash of the public key of @a ego.
1441 const struct GNUNET_HashCode *
1442 GNUNET_SOCIAL_ego_get_pub_key_hash (const struct GNUNET_SOCIAL_Ego *ego)
1444 return &ego->pub_key_hash;
1449 * Get the name of @a ego.
1454 * @return Public key of @a ego.
1457 GNUNET_SOCIAL_ego_get_name (const struct GNUNET_SOCIAL_Ego *ego)
1464 * Get the public key of @a nym.
1466 * Suitable, for example, to be used with GNUNET_SOCIAL_zone_add_nym().
1471 * @return Public key of @a nym.
1473 const struct GNUNET_CRYPTO_EcdsaPublicKey *
1474 GNUNET_SOCIAL_nym_get_pub_key (const struct GNUNET_SOCIAL_Nym *nym)
1476 return &nym->pub_key;
1481 * Get the hash of the public key of @a nym.
1486 * @return Hash of the public key of @a nym.
1488 const struct GNUNET_HashCode *
1489 GNUNET_SOCIAL_nym_get_pub_key_hash (const struct GNUNET_SOCIAL_Nym *nym)
1491 return &nym->pub_key_hash;
1496 * Send a message to all nyms that are present in the place.
1498 * This function is restricted to the host. Nyms can only send requests
1499 * to the host who can decide to relay it to everyone in the place.
1501 * @param host Host of the place.
1502 * @param method_name Method to use for the announcement.
1503 * @param env Environment containing variables for the message and operations
1504 * on objects of the place. Can be NULL.
1505 * @param notify Function to call to get the payload of the announcement.
1506 * @param notify_cls Closure for @a notify.
1507 * @param flags Flags for this announcement.
1509 * @return NULL on error (announcement already in progress?).
1511 struct GNUNET_SOCIAL_Announcement *
1512 GNUNET_SOCIAL_host_announce (struct GNUNET_SOCIAL_Host *hst,
1513 const char *method_name,
1514 const struct GNUNET_PSYC_Environment *env,
1515 GNUNET_PSYC_TransmitNotifyData notify_data,
1516 void *notify_data_cls,
1517 enum GNUNET_SOCIAL_AnnounceFlags flags)
1520 GNUNET_PSYC_transmit_message (hst->plc.tmit, method_name, env,
1521 NULL, notify_data, notify_data_cls, flags))
1522 return (struct GNUNET_SOCIAL_Announcement *) hst->plc.tmit;
1529 * Resume transmitting announcement.
1532 * The announcement to resume.
1535 GNUNET_SOCIAL_host_announce_resume (struct GNUNET_SOCIAL_Announcement *a)
1537 GNUNET_PSYC_transmit_resume ((struct GNUNET_PSYC_TransmitHandle *) a);
1542 * Cancel announcement.
1545 * The announcement to cancel.
1548 GNUNET_SOCIAL_host_announce_cancel (struct GNUNET_SOCIAL_Announcement *a)
1550 GNUNET_PSYC_transmit_cancel ((struct GNUNET_PSYC_TransmitHandle *) a);
1555 * Obtain handle for a hosted place.
1557 * The returned handle can be used to access the place API.
1559 * @param host Handle for the host.
1561 * @return Handle for the hosted place, valid as long as @a host is valid.
1563 struct GNUNET_SOCIAL_Place *
1564 GNUNET_SOCIAL_host_get_place (struct GNUNET_SOCIAL_Host *hst)
1571 * Disconnect from a home.
1573 * Invalidates host handle.
1576 * The host to disconnect.
1579 GNUNET_SOCIAL_host_disconnect (struct GNUNET_SOCIAL_Host *hst,
1580 GNUNET_ContinuationCallback disconnect_cb,
1583 place_disconnect (&hst->plc, disconnect_cb, cls);
1588 * Stop hosting the home.
1590 * Sends a _notice_place_closing announcement to the home.
1591 * Invalidates host handle.
1596 * Environment for the message or NULL.
1597 * _nym is set to @e nym regardless whether an @e env is provided.
1598 * @param disconnect_cb
1599 * Function called after the host left the place
1600 * and disconnected from the social service.
1602 * Closure for @a disconnect_cb.
1605 GNUNET_SOCIAL_host_leave (struct GNUNET_SOCIAL_Host *hst,
1606 const struct GNUNET_PSYC_Environment *env,
1607 GNUNET_ContinuationCallback disconnect_cb,
1610 GNUNET_SOCIAL_host_announce (hst, "_notice_place_closing", env, NULL, NULL,
1611 GNUNET_SOCIAL_ANNOUNCE_NONE);
1612 place_leave (&hst->plc);
1613 GNUNET_SOCIAL_host_disconnect (hst, disconnect_cb, cls);
1621 guest_connect (struct GNUNET_SOCIAL_Guest *gst);
1625 guest_reconnect (void *cls)
1627 guest_connect (cls);
1632 * Guest client disconnected from service.
1634 * Reconnect after backoff period.
1637 guest_disconnected (void *cls, enum GNUNET_MQ_Error error)
1639 struct GNUNET_SOCIAL_Guest *gst = cls;
1640 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1642 LOG (GNUNET_ERROR_TYPE_DEBUG,
1643 "Guest client disconnected (%d), re-connecting\n",
1645 if (NULL != plc->tmit)
1647 GNUNET_PSYC_transmit_destroy (plc->tmit);
1650 if (NULL != plc->mq)
1652 GNUNET_MQ_destroy (plc->mq);
1656 plc->reconnect_task = GNUNET_SCHEDULER_add_delayed (plc->reconnect_delay,
1659 plc->reconnect_delay = GNUNET_TIME_STD_BACKOFF (plc->reconnect_delay);
1664 guest_connect (struct GNUNET_SOCIAL_Guest *gst)
1666 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1668 struct GNUNET_MQ_MessageHandler handlers[] = {
1669 GNUNET_MQ_hd_fixed_size (guest_enter_ack,
1670 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_ACK,
1671 struct GNUNET_PSYC_CountersResultMessage,
1673 GNUNET_MQ_hd_var_size (guest_enter_decision,
1674 GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION,
1675 struct GNUNET_PSYC_JoinDecisionMessage,
1677 GNUNET_MQ_hd_var_size (place_message,
1678 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE,
1679 struct GNUNET_PSYC_MessageHeader,
1681 GNUNET_MQ_hd_fixed_size (place_message_ack,
1682 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK,
1683 struct GNUNET_MessageHeader,
1685 GNUNET_MQ_hd_var_size (place_history_result,
1686 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT,
1687 struct GNUNET_OperationResultMessage,
1689 GNUNET_MQ_hd_var_size (place_state_result,
1690 GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT,
1691 struct GNUNET_OperationResultMessage,
1693 GNUNET_MQ_hd_var_size (place_result,
1694 GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE,
1695 struct GNUNET_OperationResultMessage,
1697 GNUNET_MQ_handler_end ()
1700 plc->mq = GNUNET_CLIENT_connect (plc->cfg, "social",
1701 handlers, guest_disconnected, gst);
1702 GNUNET_assert (NULL != plc->mq);
1703 plc->tmit = GNUNET_PSYC_transmit_create (plc->mq);
1705 GNUNET_MQ_send_copy (plc->mq, plc->connect_env);
1709 static struct GNUNET_MQ_Envelope *
1710 guest_enter_request_create (const char *app_id,
1711 const struct GNUNET_CRYPTO_EcdsaPublicKey *ego_pub_key,
1712 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
1713 const struct GNUNET_PeerIdentity *origin,
1715 const struct GNUNET_PeerIdentity *relays,
1716 const struct GNUNET_PSYC_Message *join_msg)
1718 uint16_t app_id_size = strlen (app_id) + 1;
1719 uint16_t join_msg_size = ntohs (join_msg->header.size);
1720 uint16_t relay_size = relay_count * sizeof (*relays);
1722 struct GuestEnterRequest *greq;
1723 struct GNUNET_MQ_Envelope *
1724 env = GNUNET_MQ_msg_extra (greq, app_id_size + relay_size + join_msg_size,
1725 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER);
1726 greq->place_pub_key = *place_pub_key;
1727 greq->ego_pub_key = *ego_pub_key;
1728 greq->origin = *origin;
1729 greq->relay_count = htonl (relay_count);
1731 char *p = (char *) &greq[1];
1732 GNUNET_memcpy (p, app_id, app_id_size);
1737 GNUNET_memcpy (p, relays, relay_size);
1741 GNUNET_memcpy (p, join_msg, join_msg_size);
1747 * Request entry to a place as a guest.
1750 * Application handle.
1752 * Identity of the guest.
1753 * @param place_pub_key
1754 * Public key of the place to enter.
1756 * Flags for the entry.
1758 * Peer identity of the origin of the underlying multicast group.
1759 * @param relay_count
1760 * Number of elements in the @a relays array.
1762 * Relays for the underlying multicast group.
1763 * @param method_name
1764 * Method name for the message.
1766 * Environment containing variables for the message, or NULL.
1768 * Payload for the message to give to the enter callback.
1770 * Number of bytes in @a data.
1772 * Slicer to use for processing incoming requests from guests.
1774 * @return NULL on errors, otherwise handle for the guest.
1776 struct GNUNET_SOCIAL_Guest *
1777 GNUNET_SOCIAL_guest_enter (const struct GNUNET_SOCIAL_App *app,
1778 const struct GNUNET_SOCIAL_Ego *ego,
1779 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
1780 enum GNUNET_PSYC_SlaveJoinFlags flags,
1781 const struct GNUNET_PeerIdentity *origin,
1782 uint32_t relay_count,
1783 const struct GNUNET_PeerIdentity *relays,
1784 const struct GNUNET_PSYC_Message *entry_msg,
1785 struct GNUNET_PSYC_Slicer *slicer,
1786 GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
1787 GNUNET_SOCIAL_EntryDecisionCallback entry_dcsn_cb,
1790 struct GNUNET_SOCIAL_Guest *gst = GNUNET_malloc (sizeof (*gst));
1791 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1793 plc->ego_pub_key = ego->pub_key;
1794 plc->pub_key = *place_pub_key;
1795 plc->cfg = app->cfg;
1796 plc->is_host = GNUNET_NO;
1797 plc->slicer = slicer;
1799 plc->op = GNUNET_OP_create ();
1802 = guest_enter_request_create (app->id, &ego->pub_key, &plc->pub_key,
1803 origin, relay_count, relays, entry_msg);
1805 gst->enter_cb = local_enter_cb;
1806 gst->entry_dcsn_cb = entry_dcsn_cb;
1809 guest_connect (gst);
1815 * Request entry to a place by name as a guest.
1818 * Application handle.
1820 * Identity of the guest.
1822 * GNS name of the place to enter. Either in the form of
1823 * 'room.friend.gnu', or 'NYMPUBKEY.zkey'. This latter case refers to
1824 * the 'PLACE' record of the empty label ("+") in the GNS zone with the
1825 * nym's public key 'NYMPUBKEY', and can be used to request entry to a
1826 * pseudonym's place directly.
1828 * Password to decrypt the record, or NULL for cleartext records.
1830 * Entry request message or NULL.
1832 * Slicer to use for processing incoming requests from guests.
1833 * @param local_enter_cb
1834 * Called upon connection established to the social service.
1835 * @param entry_decision_cb
1836 * Called upon receiving entry decision.
1838 * @return NULL on errors, otherwise handle for the guest.
1840 struct GNUNET_SOCIAL_Guest *
1841 GNUNET_SOCIAL_guest_enter_by_name (const struct GNUNET_SOCIAL_App *app,
1842 const struct GNUNET_SOCIAL_Ego *ego,
1843 const char *gns_name,
1844 const char *password,
1845 const struct GNUNET_PSYC_Message *join_msg,
1846 struct GNUNET_PSYC_Slicer *slicer,
1847 GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
1848 GNUNET_SOCIAL_EntryDecisionCallback entry_decision_cb,
1851 struct GNUNET_SOCIAL_Guest *gst = GNUNET_malloc (sizeof (*gst));
1852 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1854 if (NULL == password)
1857 uint16_t app_id_size = strlen (app->id) + 1;
1858 uint16_t gns_name_size = strlen (gns_name) + 1;
1859 uint16_t password_size = strlen (password) + 1;
1861 uint16_t join_msg_size = 0;
1862 if (NULL != join_msg)
1863 join_msg_size = ntohs (join_msg->header.size);
1865 struct GuestEnterByNameRequest *greq;
1867 = GNUNET_MQ_msg_extra (greq, app_id_size + gns_name_size
1868 + password_size + join_msg_size,
1869 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_BY_NAME);
1871 greq->ego_pub_key = ego->pub_key;
1873 char *p = (char *) &greq[1];
1874 GNUNET_memcpy (p, app->id, app_id_size);
1876 GNUNET_memcpy (p, gns_name, gns_name_size);
1878 GNUNET_memcpy (p, password, password_size);
1880 if (NULL != join_msg)
1881 GNUNET_memcpy (p, join_msg, join_msg_size);
1883 plc->ego_pub_key = ego->pub_key;
1884 plc->cfg = app->cfg;
1885 plc->is_host = GNUNET_NO;
1886 plc->slicer = slicer;
1888 plc->op = GNUNET_OP_create ();
1890 gst->enter_cb = local_enter_cb;
1891 gst->entry_dcsn_cb = entry_decision_cb;
1894 guest_connect (gst);
1900 * Reconnect to an already entered place as guest.
1903 * Guest connection handle.
1904 * @see GNUNET_SOCIAL_app_connect() & GNUNET_SOCIAL_AppGuestPlaceCallback()
1906 * Flags for the entry.
1908 * Slicer to use for processing incoming requests from guests.
1909 * @param local_enter_cb
1910 * Called upon connection established to the social service.
1911 * @param entry_decision_cb
1912 * Called upon receiving entry decision.
1914 * @return NULL on errors, otherwise handle for the guest.
1916 struct GNUNET_SOCIAL_Guest *
1917 GNUNET_SOCIAL_guest_enter_reconnect (struct GNUNET_SOCIAL_GuestConnection *gconn,
1918 enum GNUNET_PSYC_SlaveJoinFlags flags,
1919 struct GNUNET_PSYC_Slicer *slicer,
1920 GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
1923 struct GNUNET_SOCIAL_Guest *gst = GNUNET_malloc (sizeof (*gst));
1924 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1926 uint16_t app_id_size = strlen (gconn->app->id) + 1;
1927 struct GuestEnterRequest *greq;
1929 = GNUNET_MQ_msg_extra (greq, app_id_size,
1930 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER);
1931 greq->ego_pub_key = gconn->plc_msg.ego_pub_key;
1932 greq->place_pub_key = gconn->plc_msg.place_pub_key;
1933 greq->flags = htonl (flags);
1935 GNUNET_memcpy (&greq[1], gconn->app->id, app_id_size);
1937 plc->cfg = gconn->app->cfg;
1938 plc->is_host = GNUNET_NO;
1939 plc->slicer = slicer;
1940 plc->pub_key = gconn->plc_msg.place_pub_key;
1941 plc->ego_pub_key = gconn->plc_msg.ego_pub_key;
1943 plc->op = GNUNET_OP_create ();
1945 gst->enter_cb = local_enter_cb;
1948 guest_connect (gst);
1954 * Talk to the host of the place.
1957 * Place where we want to talk to the host.
1958 * @param method_name
1959 * Method to invoke on the host.
1961 * Environment containing variables for the message, or NULL.
1962 * @param notify_data
1963 * Function to use to get the payload for the method.
1964 * @param notify_data_cls
1965 * Closure for @a notify_data.
1967 * Flags for the message being sent.
1969 * @return NULL if we are already trying to talk to the host,
1970 * otherwise handle to cancel the request.
1972 struct GNUNET_SOCIAL_TalkRequest *
1973 GNUNET_SOCIAL_guest_talk (struct GNUNET_SOCIAL_Guest *gst,
1974 const char *method_name,
1975 const struct GNUNET_PSYC_Environment *env,
1976 GNUNET_PSYC_TransmitNotifyData notify_data,
1977 void *notify_data_cls,
1978 enum GNUNET_SOCIAL_TalkFlags flags)
1980 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1981 GNUNET_assert (NULL != plc->tmit);
1984 GNUNET_PSYC_transmit_message (plc->tmit, method_name, env,
1985 NULL, notify_data, notify_data_cls, flags))
1986 return (struct GNUNET_SOCIAL_TalkRequest *) plc->tmit;
1993 * Resume talking to the host of the place.
1996 * Talk request to resume.
1999 GNUNET_SOCIAL_guest_talk_resume (struct GNUNET_SOCIAL_TalkRequest *tr)
2001 GNUNET_PSYC_transmit_resume ((struct GNUNET_PSYC_TransmitHandle *) tr);
2006 * Cancel talking to the host of the place.
2009 * Talk request to cancel.
2012 GNUNET_SOCIAL_guest_talk_cancel (struct GNUNET_SOCIAL_TalkRequest *tr)
2014 GNUNET_PSYC_transmit_cancel ( (struct GNUNET_PSYC_TransmitHandle *) tr);
2019 * Disconnect from a place.
2021 * Invalidates guest handle.
2024 * The guest to disconnect.
2027 GNUNET_SOCIAL_guest_disconnect (struct GNUNET_SOCIAL_Guest *gst,
2028 GNUNET_ContinuationCallback disconnect_cb,
2031 place_disconnect (&gst->plc, disconnect_cb, cls);
2036 * Leave a place temporarily or permanently.
2038 * Notifies the owner of the place about leaving, and destroys the place handle.
2042 * @param keep_active
2043 * Keep place active after last application disconnected.
2044 * #GNUNET_YES or #GNUNET_NO
2046 * Optional environment for the leave message if @a keep_active
2047 * is #GNUNET_NO. NULL if not needed.
2049 * Called upon disconnecting from the social service.
2052 GNUNET_SOCIAL_guest_leave (struct GNUNET_SOCIAL_Guest *gst,
2053 struct GNUNET_PSYC_Environment *env,
2054 GNUNET_ContinuationCallback disconnect_cb,
2057 GNUNET_SOCIAL_guest_talk (gst, "_notice_place_leave", env, NULL, NULL,
2058 GNUNET_SOCIAL_TALK_NONE);
2059 place_leave (&gst->plc);
2060 GNUNET_SOCIAL_guest_disconnect (gst, disconnect_cb, cls);
2065 * Obtain handle for a place entered as guest.
2067 * The returned handle can be used to access the place API.
2069 * @param guest Handle for the guest.
2071 * @return Handle for the place, valid as long as @a guest is valid.
2073 struct GNUNET_SOCIAL_Place *
2074 GNUNET_SOCIAL_guest_get_place (struct GNUNET_SOCIAL_Guest *gst)
2081 * Obtain the public key of a place.
2086 * @return Public key of the place.
2088 const struct GNUNET_CRYPTO_EddsaPublicKey *
2089 GNUNET_SOCIAL_place_get_pub_key (const struct GNUNET_SOCIAL_Place *plc)
2091 return &plc->pub_key;
2096 * Set message processing @a flags for a @a method_prefix.
2100 * @param method_prefix
2101 * Method prefix @a flags apply to.
2103 * The flags that apply to a matching @a method_prefix.
2106 GNUNET_SOCIAL_place_msg_proc_set (struct GNUNET_SOCIAL_Place *plc,
2107 const char *method_prefix,
2108 enum GNUNET_SOCIAL_MsgProcFlags flags)
2110 GNUNET_assert (NULL != method_prefix);
2111 struct MsgProcRequest *mpreq;
2112 uint16_t method_size = strnlen (method_prefix,
2113 GNUNET_SERVER_MAX_MESSAGE_SIZE
2114 - sizeof (*mpreq)) + 1;
2115 GNUNET_assert ('\0' == method_prefix[method_size - 1]);
2117 struct GNUNET_MQ_Envelope *
2118 env = GNUNET_MQ_msg_extra (mpreq, method_size,
2119 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_SET);
2120 mpreq->flags = htonl (flags);
2121 GNUNET_memcpy (&mpreq[1], method_prefix, method_size);
2123 GNUNET_MQ_send (plc->mq, env);
2128 * Clear all message processing flags previously set for this place.
2131 GNUNET_SOCIAL_place_msg_proc_clear (struct GNUNET_SOCIAL_Place *plc)
2133 struct GNUNET_MessageHeader *req;
2134 struct GNUNET_MQ_Envelope *
2135 env = GNUNET_MQ_msg (req, GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_CLEAR);
2137 GNUNET_MQ_send (plc->mq, env);
2141 static struct GNUNET_SOCIAL_HistoryRequest *
2142 place_history_replay (struct GNUNET_SOCIAL_Place *plc,
2143 uint64_t start_message_id,
2144 uint64_t end_message_id,
2145 uint64_t message_limit,
2146 const char *method_prefix,
2148 struct GNUNET_PSYC_Slicer *slicer,
2149 GNUNET_ResultCallback result_cb,
2152 struct GNUNET_PSYC_HistoryRequestMessage *req;
2153 struct GNUNET_SOCIAL_HistoryRequest *hist = GNUNET_malloc (sizeof (*hist));
2155 hist->slicer = slicer;
2156 hist->result_cb = result_cb;
2158 hist->op_id = GNUNET_OP_add (plc->op, op_recv_history_result, hist, NULL);
2160 GNUNET_assert (NULL != method_prefix);
2161 uint16_t method_size = strnlen (method_prefix,
2162 GNUNET_SERVER_MAX_MESSAGE_SIZE
2163 - sizeof (*req)) + 1;
2164 GNUNET_assert ('\0' == method_prefix[method_size - 1]);
2166 struct GNUNET_MQ_Envelope *
2167 env = GNUNET_MQ_msg_extra (req, method_size,
2168 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_REPLAY);
2169 req->start_message_id = GNUNET_htonll (start_message_id);
2170 req->end_message_id = GNUNET_htonll (end_message_id);
2171 req->message_limit = GNUNET_htonll (message_limit);
2172 req->flags = htonl (flags);
2173 req->op_id = GNUNET_htonll (hist->op_id);
2174 GNUNET_memcpy (&req[1], method_prefix, method_size);
2176 GNUNET_MQ_send (plc->mq, env);
2182 * Learn about the history of a place.
2184 * Messages are returned through the @a slicer function
2185 * and have the #GNUNET_PSYC_MESSAGE_HISTORIC flag set.
2188 * Place we want to learn more about.
2189 * @param start_message_id
2190 * First historic message we are interested in.
2191 * @param end_message_id
2192 * Last historic message we are interested in (inclusive).
2193 * @param method_prefix
2194 * Only retrieve messages with this method prefix.
2196 * OR'ed GNUNET_PSYC_HistoryReplayFlags
2198 * Slicer to use for retrieved messages.
2199 * Can be the same as the slicer of the place.
2201 * Function called after all messages retrieved.
2202 * NULL if not needed.
2203 * @param cls Closure for @a result_cb.
2205 struct GNUNET_SOCIAL_HistoryRequest *
2206 GNUNET_SOCIAL_place_history_replay (struct GNUNET_SOCIAL_Place *plc,
2207 uint64_t start_message_id,
2208 uint64_t end_message_id,
2209 const char *method_prefix,
2211 struct GNUNET_PSYC_Slicer *slicer,
2212 GNUNET_ResultCallback result_cb,
2215 return place_history_replay (plc, start_message_id, end_message_id, 0,
2216 method_prefix, flags, slicer, result_cb, cls);
2221 * Learn about the history of a place.
2223 * Sends messages through the slicer function of the place where
2224 * start_message_id <= message_id <= end_message_id.
2225 * The messages will have the #GNUNET_PSYC_MESSAGE_HISTORIC flag set.
2227 * To get the latest message, use 0 for both the start and end message ID.
2230 * Place we want to learn more about.
2231 * @param message_limit
2232 * Maximum number of historic messages we are interested in.
2233 * @param method_prefix
2234 * Only retrieve messages with this method prefix.
2236 * OR'ed GNUNET_PSYC_HistoryReplayFlags
2238 * Function called after all messages retrieved.
2239 * NULL if not needed.
2240 * @param cls Closure for @a result_cb.
2242 struct GNUNET_SOCIAL_HistoryRequest *
2243 GNUNET_SOCIAL_place_history_replay_latest (struct GNUNET_SOCIAL_Place *plc,
2244 uint64_t message_limit,
2245 const char *method_prefix,
2247 struct GNUNET_PSYC_Slicer *slicer,
2248 GNUNET_ResultCallback result_cb,
2251 return place_history_replay (plc, 0, 0, message_limit, method_prefix, flags,
2252 slicer, result_cb, cls);
2257 * Cancel learning about the history of a place.
2260 * History lesson to cancel.
2263 GNUNET_SOCIAL_place_history_replay_cancel (struct GNUNET_SOCIAL_HistoryRequest *hist)
2265 GNUNET_OP_remove (hist->plc->op, hist->op_id);
2271 * Request matching state variables.
2273 static struct GNUNET_SOCIAL_LookHandle *
2274 place_state_get (struct GNUNET_SOCIAL_Place *plc,
2275 uint16_t type, const char *name,
2276 GNUNET_PSYC_StateVarCallback var_cb,
2277 GNUNET_ResultCallback result_cb, void *cls)
2279 struct GNUNET_PSYC_StateRequestMessage *req;
2280 struct GNUNET_SOCIAL_LookHandle *look = GNUNET_malloc (sizeof (*look));
2282 look->var_cb = var_cb;
2283 look->result_cb = result_cb;
2285 look->op_id = GNUNET_OP_add (plc->op, &op_recv_state_result, look, NULL);
2287 GNUNET_assert (NULL != name);
2288 size_t name_size = strnlen (name, GNUNET_SERVER_MAX_MESSAGE_SIZE
2289 - sizeof (*req)) + 1;
2290 struct GNUNET_MQ_Envelope *
2291 env = GNUNET_MQ_msg_extra (req, name_size, type);
2292 req->op_id = GNUNET_htonll (look->op_id);
2293 GNUNET_memcpy (&req[1], name, name_size);
2295 GNUNET_MQ_send (plc->mq, env);
2301 * Look at a particular object in the place.
2303 * The best matching object is returned (its name might be less specific than
2304 * what was requested).
2307 * The place where to look.
2309 * Full name of the object.
2311 * Set to the size of the returned value.
2313 * @return NULL if there is no such object at this place.
2315 struct GNUNET_SOCIAL_LookHandle *
2316 GNUNET_SOCIAL_place_look_at (struct GNUNET_SOCIAL_Place *plc,
2317 const char *full_name,
2318 GNUNET_PSYC_StateVarCallback var_cb,
2319 GNUNET_ResultCallback result_cb,
2322 return place_state_get (plc, GNUNET_MESSAGE_TYPE_PSYC_STATE_GET,
2323 full_name, var_cb, result_cb, cls);
2328 * Look for objects in the place with a matching name prefix.
2331 * The place where to look.
2332 * @param name_prefix
2333 * Look at objects with names beginning with this value.
2335 * Function to call for each object found.
2337 * Closure for callback function.
2339 * @return Handle that can be used to stop looking at objects.
2341 struct GNUNET_SOCIAL_LookHandle *
2342 GNUNET_SOCIAL_place_look_for (struct GNUNET_SOCIAL_Place *plc,
2343 const char *name_prefix,
2344 GNUNET_PSYC_StateVarCallback var_cb,
2345 GNUNET_ResultCallback result_cb,
2348 return place_state_get (plc, GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX,
2349 name_prefix, var_cb, result_cb, cls);
2354 * Cancel a state request operation.
2357 * Handle for the operation to cancel.
2360 GNUNET_SOCIAL_place_look_cancel (struct GNUNET_SOCIAL_LookHandle *look)
2362 GNUNET_OP_remove (look->plc->op, look->op_id);
2368 op_recv_zone_add_place_result (void *cls, int64_t result,
2369 const void *err_msg, uint16_t err_msg_size)
2371 LOG (GNUNET_ERROR_TYPE_DEBUG,
2372 "Received zone add place result: %" PRId64 ".\n", result);
2374 struct ZoneAddPlaceHandle *add_plc = cls;
2375 if (NULL != add_plc->result_cb)
2376 add_plc->result_cb (add_plc->result_cls, result, err_msg, err_msg_size);
2378 GNUNET_free (add_plc);
2383 * Advertise @e place in the GNS zone of @e ego.
2386 * Application handle.
2389 * @param place_pub_key
2390 * Public key of place to add.
2392 * The name for the PLACE record to put in the zone.
2394 * Password used to encrypt the record or NULL to keep it cleartext.
2395 * @param relay_count
2396 * Number of elements in the @a relays array.
2398 * List of relays to put in the PLACE record to advertise
2399 * as entry points to the place in addition to the origin.
2400 * @param expiration_time
2401 * Expiration time of the record, use 0 to remove the record.
2403 * Function called with the result of the operation.
2405 * Closure for @a result_cb
2407 * @return #GNUNET_OK if the request was sent,
2408 * #GNUNET_SYSERR on error, e.g. the name/password is too long.
2411 GNUNET_SOCIAL_zone_add_place (const struct GNUNET_SOCIAL_App *app,
2412 const struct GNUNET_SOCIAL_Ego *ego,
2414 const char *password,
2415 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
2416 const struct GNUNET_PeerIdentity *origin,
2417 uint32_t relay_count,
2418 const struct GNUNET_PeerIdentity *relays,
2419 struct GNUNET_TIME_Absolute expiration_time,
2420 GNUNET_ResultCallback result_cb,
2423 struct ZoneAddPlaceRequest *preq;
2424 size_t name_size = strlen (name) + 1;
2425 size_t password_size = strlen (password) + 1;
2426 size_t relay_size = relay_count * sizeof (*relays);
2427 size_t payload_size = name_size + password_size + relay_size;
2429 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < sizeof (*preq) + payload_size)
2430 return GNUNET_SYSERR;
2432 struct GNUNET_MQ_Envelope *
2433 env = GNUNET_MQ_msg_extra (preq, payload_size,
2434 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_PLACE);
2435 preq->expiration_time = GNUNET_htonll (expiration_time.abs_value_us);
2436 preq->ego_pub_key = ego->pub_key;
2437 preq->place_pub_key = *place_pub_key;
2438 preq->origin = *origin;
2439 preq->relay_count = htonl (relay_count);
2441 char *p = (char *) &preq[1];
2442 GNUNET_memcpy (p, name, name_size);
2444 GNUNET_memcpy (p, password, password_size);
2446 GNUNET_memcpy (p, relays, relay_size);
2448 struct ZoneAddPlaceHandle * add_plc = GNUNET_malloc (sizeof (*add_plc));
2449 add_plc->result_cb = result_cb;
2450 add_plc->result_cls = result_cls;
2452 preq->op_id = GNUNET_htonll (GNUNET_OP_add (app->op,
2453 op_recv_zone_add_place_result,
2456 GNUNET_MQ_send (app->mq, env);
2462 op_recv_zone_add_nym_result (void *cls, int64_t result,
2463 const void *err_msg, uint16_t err_msg_size)
2465 LOG (GNUNET_ERROR_TYPE_DEBUG,
2466 "Received zone add nym result: %" PRId64 ".\n", result);
2468 struct ZoneAddNymHandle *add_nym = cls;
2469 if (NULL != add_nym->result_cb)
2470 add_nym->result_cb (add_nym->result_cls, result, err_msg, err_msg_size);
2472 GNUNET_free (add_nym);
2477 * Add nym to the GNS zone of @e ego.
2484 * The name for the PKEY record to put in the zone.
2485 * @param nym_pub_key
2486 * Public key of nym to add.
2487 * @param expiration_time
2488 * Expiration time of the record, use 0 to remove the record.
2490 * Function called with the result of the operation.
2492 * Closure for @a result_cb
2494 * @return #GNUNET_OK if the request was sent,
2495 * #GNUNET_SYSERR on error, e.g. the name is too long.
2498 GNUNET_SOCIAL_zone_add_nym (const struct GNUNET_SOCIAL_App *app,
2499 const struct GNUNET_SOCIAL_Ego *ego,
2501 const struct GNUNET_CRYPTO_EcdsaPublicKey *nym_pub_key,
2502 struct GNUNET_TIME_Absolute expiration_time,
2503 GNUNET_ResultCallback result_cb,
2506 struct ZoneAddNymRequest *nreq;
2508 size_t name_size = strlen (name) + 1;
2509 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < sizeof (*nreq) + name_size)
2510 return GNUNET_SYSERR;
2512 struct GNUNET_MQ_Envelope *
2513 env = GNUNET_MQ_msg_extra (nreq, name_size,
2514 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_NYM);
2515 nreq->expiration_time = GNUNET_htonll (expiration_time.abs_value_us);
2516 nreq->ego_pub_key = ego->pub_key;
2517 nreq->nym_pub_key = *nym_pub_key;
2518 GNUNET_memcpy (&nreq[1], name, name_size);
2520 struct ZoneAddNymHandle *add_nym = GNUNET_malloc (sizeof (*add_nym));
2521 add_nym->result_cb = result_cb;
2522 add_nym->result_cls = result_cls;
2524 nreq->op_id = GNUNET_htonll (GNUNET_OP_add (app->op,
2525 op_recv_zone_add_nym_result,
2528 GNUNET_MQ_send (app->mq, env);
2537 app_connect (struct GNUNET_SOCIAL_App *app);
2541 app_reconnect (void *cls)
2548 * App client disconnected from service.
2550 * Reconnect after backoff period.
2553 app_disconnected (void *cls, enum GNUNET_MQ_Error error)
2555 struct GNUNET_SOCIAL_App *app = cls;
2557 LOG (GNUNET_ERROR_TYPE_DEBUG,
2558 "App client disconnected (%d), re-connecting\n",
2560 if (NULL != app->mq)
2562 GNUNET_MQ_destroy (app->mq);
2566 app->reconnect_task = GNUNET_SCHEDULER_add_delayed (app->reconnect_delay,
2569 app->reconnect_delay = GNUNET_TIME_STD_BACKOFF (app->reconnect_delay);
2574 app_connect (struct GNUNET_SOCIAL_App *app)
2576 struct GNUNET_MQ_MessageHandler handlers[] = {
2577 GNUNET_MQ_hd_var_size (app_ego,
2578 GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO,
2579 struct AppEgoMessage,
2581 GNUNET_MQ_hd_fixed_size (app_ego_end,
2582 GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO_END,
2583 struct GNUNET_MessageHeader,
2585 GNUNET_MQ_hd_var_size (app_place,
2586 GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE,
2587 struct AppPlaceMessage,
2589 GNUNET_MQ_hd_fixed_size (app_place_end,
2590 GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE_END,
2591 struct GNUNET_MessageHeader,
2593 GNUNET_MQ_hd_var_size (app_result,
2594 GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE,
2595 struct GNUNET_OperationResultMessage,
2597 GNUNET_MQ_handler_end ()
2600 app->mq = GNUNET_CLIENT_connect (app->cfg, "social",
2601 handlers, app_disconnected, app);
2602 GNUNET_assert (NULL != app->mq);
2603 GNUNET_MQ_send_copy (app->mq, app->connect_env);
2608 * Connect application to the social service.
2610 * The @host_place_cb and @guest_place_cb functions are
2611 * initially called for each entered places,
2612 * then later each time a new place is entered with the current application ID.
2619 * Function to notify about an available ego.
2621 * Function to notify about a place entered as host.
2623 * Function to notify about a place entered as guest.
2625 * Closure for the callbacks.
2627 * @return Handle that can be used to stop listening.
2629 struct GNUNET_SOCIAL_App *
2630 GNUNET_SOCIAL_app_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
2632 GNUNET_SOCIAL_AppEgoCallback ego_cb,
2633 GNUNET_SOCIAL_AppHostPlaceCallback host_cb,
2634 GNUNET_SOCIAL_AppGuestPlaceCallback guest_cb,
2635 GNUNET_SOCIAL_AppConnectedCallback connected_cb,
2638 uint16_t app_id_size = strnlen (id, GNUNET_SOCIAL_APP_MAX_ID_SIZE);
2639 if (GNUNET_SOCIAL_APP_MAX_ID_SIZE == app_id_size)
2643 struct GNUNET_SOCIAL_App *app = GNUNET_malloc (sizeof *app);
2645 app->ego_cb = ego_cb;
2646 app->host_cb = host_cb;
2647 app->guest_cb = guest_cb;
2648 app->connected_cb = connected_cb;
2650 app->egos = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
2651 app->op = GNUNET_OP_create ();
2652 app->id = GNUNET_malloc (app_id_size);
2653 GNUNET_memcpy (app->id, id, app_id_size);
2655 struct AppConnectRequest *creq;
2656 app->connect_env = GNUNET_MQ_msg_extra (creq, app_id_size,
2657 GNUNET_MESSAGE_TYPE_SOCIAL_APP_CONNECT);
2658 GNUNET_memcpy (&creq[1], app->id, app_id_size);
2666 app_cleanup (struct GNUNET_SOCIAL_App *app)
2668 if (NULL != app->mq)
2670 GNUNET_MQ_destroy (app->mq);
2673 if (NULL != app->disconnect_cb)
2675 app->disconnect_cb (app->disconnect_cls);
2676 app->disconnect_cb = NULL;
2682 * Disconnect application.
2685 * Application handle.
2686 * @param disconnect_cb
2687 * Disconnect callback.
2688 * @param disconnect_cls
2689 * Disconnect closure.
2692 GNUNET_SOCIAL_app_disconnect (struct GNUNET_SOCIAL_App *app,
2693 GNUNET_ContinuationCallback disconnect_cb,
2694 void *disconnect_cls)
2696 app->disconnect_cb = disconnect_cb;
2697 app->disconnect_cls = disconnect_cls;
2699 if (NULL != app->mq)
2701 struct GNUNET_MQ_Envelope *env = GNUNET_MQ_get_last_envelope (app->mq);
2704 GNUNET_MQ_notify_sent (env, (GNUNET_SCHEDULER_TaskCallback) app_cleanup, app);
2719 * Detach application from a place.
2721 * Removes the place from the entered places list for this application.
2722 * Note: this does not disconnect from the place.
2724 * @see GNUNET_SOCIAL_host_disconnect() and GNUNET_SOCIAL_guest_disconnect()
2732 GNUNET_SOCIAL_app_detach (struct GNUNET_SOCIAL_App *app,
2733 struct GNUNET_SOCIAL_Place *plc)
2735 struct AppDetachRequest *dreq;
2736 struct GNUNET_MQ_Envelope *
2737 env = GNUNET_MQ_msg (dreq, GNUNET_MESSAGE_TYPE_SOCIAL_APP_DETACH);
2738 dreq->place_pub_key = plc->pub_key;
2739 dreq->ego_pub_key = plc->ego_pub_key;
2741 GNUNET_MQ_send (app->mq, env);
2745 /* end of social_api.c */