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 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
822 "handle_host_enter_request\n");
824 if (NULL == hst->answer_door_cb)
827 const char *method_name = NULL;
828 struct GNUNET_PSYC_Environment *env = NULL;
829 struct GNUNET_PSYC_MessageHeader *entry_pmsg = NULL;
830 const void *data = NULL;
831 uint16_t data_size = 0;
833 const struct GNUNET_PSYC_Message *join_msg = NULL;
837 if (sizeof (*req) + sizeof (*join_msg) <= ntohs (req->header.size))
839 join_msg = (struct GNUNET_PSYC_Message *) GNUNET_MQ_extract_nested_mh (req);
840 LOG (GNUNET_ERROR_TYPE_DEBUG,
841 "Received join_msg of type %u and size %u.\n",
842 ntohs (join_msg->header.type), ntohs (join_msg->header.size));
844 env = GNUNET_PSYC_env_create ();
845 entry_pmsg = GNUNET_PSYC_message_header_create_from_psyc (join_msg);
846 if (GNUNET_OK != GNUNET_PSYC_message_parse (entry_pmsg, &method_name, env,
850 str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&req->slave_pub_key);
851 LOG (GNUNET_ERROR_TYPE_WARNING,
852 "Ignoring invalid entry request from nym %s.\n",
859 struct GNUNET_SOCIAL_Nym *nym = nym_get_or_create (&req->slave_pub_key);
860 hst->answer_door_cb (hst->cb_cls, nym, method_name, env,
865 GNUNET_PSYC_env_destroy (env);
866 if (NULL != entry_pmsg)
867 GNUNET_free (entry_pmsg);
872 handle_guest_enter_ack (void *cls,
873 const struct GNUNET_PSYC_CountersResultMessage *cres)
875 struct GNUNET_SOCIAL_Guest *gst = cls;
877 int32_t result = ntohl (cres->result_code);
878 if (NULL != gst->enter_cb)
879 gst->enter_cb (gst->cb_cls, result, &gst->plc.pub_key,
880 GNUNET_ntohll (cres->max_message_id));
885 check_guest_enter_decision (void *cls,
886 const struct GNUNET_PSYC_JoinDecisionMessage *dcsn)
893 handle_guest_enter_decision (void *cls,
894 const struct GNUNET_PSYC_JoinDecisionMessage *dcsn)
896 struct GNUNET_SOCIAL_Guest *gst = cls;
898 struct GNUNET_PSYC_Message *pmsg = NULL;
899 if (ntohs (dcsn->header.size) > sizeof (*dcsn))
900 pmsg = (struct GNUNET_PSYC_Message *) GNUNET_MQ_extract_nested_mh (dcsn);
902 if (NULL != gst->entry_dcsn_cb)
903 gst->entry_dcsn_cb (gst->cb_cls, ntohl (dcsn->is_admitted), pmsg);
908 check_app_ego (void *cls,
909 const struct AppEgoMessage *emsg)
916 handle_app_ego (void *cls,
917 const struct AppEgoMessage *emsg)
919 struct GNUNET_SOCIAL_App *app = cls;
921 uint16_t name_size = ntohs (emsg->header.size) - sizeof (*emsg);
923 struct GNUNET_HashCode ego_pub_hash;
924 GNUNET_CRYPTO_hash (&emsg->ego_pub_key, sizeof (emsg->ego_pub_key),
927 struct GNUNET_SOCIAL_Ego *
928 ego = GNUNET_CONTAINER_multihashmap_get (app->egos, &ego_pub_hash);
931 ego = GNUNET_malloc (sizeof (*ego));
932 ego->pub_key = emsg->ego_pub_key;
933 ego->name = GNUNET_malloc (name_size);
934 GNUNET_memcpy (ego->name, &emsg[1], name_size);
938 ego->name = GNUNET_realloc (ego->name, name_size);
939 GNUNET_memcpy (ego->name, &emsg[1], name_size);
942 GNUNET_CONTAINER_multihashmap_put (app->egos, &ego_pub_hash, ego,
943 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
945 if (NULL != app->ego_cb)
946 app->ego_cb (app->cb_cls, ego, &ego->pub_key, ego->name);
951 handle_app_ego_end (void *cls,
952 const struct GNUNET_MessageHeader *msg)
954 //struct GNUNET_SOCIAL_App *app = cls;
959 check_app_place (void *cls,
960 const struct AppPlaceMessage *pmsg)
967 handle_app_place (void *cls,
968 const struct AppPlaceMessage *pmsg)
970 struct GNUNET_SOCIAL_App *app = cls;
972 if ((GNUNET_YES == pmsg->is_host && NULL == app->host_cb)
973 || (GNUNET_NO == pmsg->is_host && NULL == app->guest_cb))
976 struct GNUNET_HashCode ego_pub_hash;
977 GNUNET_CRYPTO_hash (&pmsg->ego_pub_key, sizeof (pmsg->ego_pub_key),
979 struct GNUNET_SOCIAL_Ego *
980 ego = GNUNET_CONTAINER_multihashmap_get (app->egos, &ego_pub_hash);
983 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failure to obtain ego %s.\n",
984 GNUNET_h2s (&ego_pub_hash));
989 if (GNUNET_YES == pmsg->is_host)
991 if (NULL != app->host_cb) {
992 struct GNUNET_SOCIAL_HostConnection *hconn = GNUNET_malloc (sizeof (*hconn));
994 hconn->plc_msg = *pmsg;
995 app->host_cb (app->cb_cls, hconn, ego, &pmsg->place_pub_key, pmsg->place_state);
999 else if (NULL != app->guest_cb)
1001 struct GNUNET_SOCIAL_GuestConnection *gconn = GNUNET_malloc (sizeof (*gconn));
1003 gconn->plc_msg = *pmsg;
1004 app->guest_cb (app->cb_cls, gconn, ego, &pmsg->place_pub_key, pmsg->place_state);
1005 GNUNET_free (gconn);
1011 handle_app_place_end (void *cls,
1012 const struct GNUNET_MessageHeader *msg)
1014 struct GNUNET_SOCIAL_App *app = cls;
1016 if (NULL != app->connected_cb)
1017 app->connected_cb (app->cb_cls);
1021 /*** CLEANUP / DISCONNECT ***/
1025 host_cleanup (struct GNUNET_SOCIAL_Host *hst)
1027 if (NULL != hst->slicer)
1029 GNUNET_PSYC_slicer_destroy (hst->slicer);
1037 guest_cleanup (struct GNUNET_SOCIAL_Guest *gst)
1044 place_cleanup (struct GNUNET_SOCIAL_Place *plc)
1046 struct GNUNET_HashCode place_pub_hash;
1047 GNUNET_CRYPTO_hash (&plc->pub_key, sizeof (plc->pub_key), &place_pub_hash);
1048 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1049 "%s place cleanup: %s\n",
1050 GNUNET_YES == plc->is_host ? "host" : "guest",
1051 GNUNET_h2s (&place_pub_hash));
1053 if (NULL != plc->tmit)
1055 GNUNET_PSYC_transmit_destroy (plc->tmit);
1058 if (NULL != plc->connect_env)
1060 GNUNET_MQ_discard (plc->connect_env);
1061 plc->connect_env = NULL;
1063 if (NULL != plc->mq)
1065 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1066 "destroying MQ (place_cleanup)\n");
1067 GNUNET_MQ_destroy (plc->mq);
1070 if (NULL != plc->disconnect_cb)
1072 plc->disconnect_cb (plc->disconnect_cls);
1073 plc->disconnect_cb = NULL;
1076 (GNUNET_YES == plc->is_host)
1077 ? host_cleanup ((struct GNUNET_SOCIAL_Host *) plc)
1078 : guest_cleanup ((struct GNUNET_SOCIAL_Guest *) plc);
1083 place_disconnect (struct GNUNET_SOCIAL_Place *plc)
1085 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1086 "place_disconnect, plc = %p\n",
1088 if (NULL != plc->mq)
1090 struct GNUNET_MQ_Envelope *env = GNUNET_MQ_get_last_envelope (plc->mq);
1093 GNUNET_MQ_notify_sent (env, (GNUNET_SCHEDULER_TaskCallback) place_cleanup, plc);
1097 place_cleanup (plc);
1102 place_cleanup (plc);
1108 place_leave (struct GNUNET_SOCIAL_Place *plc)
1110 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1111 "social_api: place_leave\n");
1112 struct GNUNET_MessageHeader *msg;
1113 struct GNUNET_MQ_Envelope *
1114 env = GNUNET_MQ_msg (msg, GNUNET_MESSAGE_TYPE_SOCIAL_PLACE_LEAVE);
1116 GNUNET_MQ_send (plc->mq, env);
1124 host_connect (struct GNUNET_SOCIAL_Host *hst);
1128 host_reconnect (void *cls)
1135 * Host client disconnected from service.
1137 * Reconnect after backoff period.
1140 host_disconnected (void *cls, enum GNUNET_MQ_Error error)
1142 struct GNUNET_SOCIAL_Host *hst = cls;
1143 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1145 LOG (GNUNET_ERROR_TYPE_DEBUG,
1146 "Host client disconnected (%d), re-connecting\n",
1148 if (NULL != plc->tmit)
1150 GNUNET_PSYC_transmit_destroy (plc->tmit);
1153 if (NULL != plc->mq)
1155 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1156 "destroying MQ (host_disconnected)\n");
1157 GNUNET_MQ_destroy (plc->mq);
1161 plc->reconnect_task = GNUNET_SCHEDULER_add_delayed (plc->reconnect_delay,
1164 plc->reconnect_delay = GNUNET_TIME_STD_BACKOFF (plc->reconnect_delay);
1169 host_connect (struct GNUNET_SOCIAL_Host *hst)
1171 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1173 struct GNUNET_MQ_MessageHandler handlers[] = {
1174 GNUNET_MQ_hd_fixed_size (host_enter_ack,
1175 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER_ACK,
1176 struct HostEnterAck,
1178 GNUNET_MQ_hd_var_size (host_enter_request,
1179 GNUNET_MESSAGE_TYPE_PSYC_JOIN_REQUEST,
1180 struct GNUNET_PSYC_JoinRequestMessage,
1182 GNUNET_MQ_hd_var_size (host_message,
1183 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE,
1184 struct GNUNET_PSYC_MessageHeader,
1186 GNUNET_MQ_hd_fixed_size (place_message_ack,
1187 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK,
1188 struct GNUNET_MessageHeader,
1190 GNUNET_MQ_hd_var_size (place_history_result,
1191 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT,
1192 struct GNUNET_OperationResultMessage,
1194 GNUNET_MQ_hd_var_size (place_state_result,
1195 GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT,
1196 struct GNUNET_OperationResultMessage,
1198 GNUNET_MQ_hd_var_size (place_result,
1199 GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE,
1200 struct GNUNET_OperationResultMessage,
1202 GNUNET_MQ_handler_end ()
1205 plc->mq = GNUNET_CLIENT_connect (plc->cfg, "social",
1206 handlers, host_disconnected, hst);
1207 GNUNET_assert (NULL != plc->mq);
1208 plc->tmit = GNUNET_PSYC_transmit_create (plc->mq);
1210 GNUNET_MQ_send_copy (plc->mq, plc->connect_env);
1215 * Enter a place as host.
1217 * A place is created upon first entering, and it is active until permanently
1218 * left using GNUNET_SOCIAL_host_leave().
1221 * Application handle.
1223 * Identity of the host.
1225 * Policy specifying entry and history restrictions for the place.
1227 * Slicer to handle incoming messages.
1229 * Function called when the place is entered and ready to use.
1230 * @param answer_door_cb
1231 * Function to handle new nyms that want to enter.
1232 * @param farewell_cb
1233 * Function to handle departing nyms.
1235 * Closure for the callbacks.
1237 * @return Handle for the host. This handle contains the pubkey.
1239 struct GNUNET_SOCIAL_Host *
1240 GNUNET_SOCIAL_host_enter (const struct GNUNET_SOCIAL_App *app,
1241 const struct GNUNET_SOCIAL_Ego *ego,
1242 enum GNUNET_PSYC_Policy policy,
1243 struct GNUNET_PSYC_Slicer *slicer,
1244 GNUNET_SOCIAL_HostEnterCallback enter_cb,
1245 GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb,
1246 GNUNET_SOCIAL_FarewellCallback farewell_cb,
1249 struct GNUNET_SOCIAL_Host *hst = GNUNET_malloc (sizeof (*hst));
1250 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1252 plc->cfg = app->cfg;
1253 plc->is_host = GNUNET_YES;
1254 plc->slicer = slicer;
1256 hst->enter_cb = enter_cb;
1257 hst->answer_door_cb = answer_door_cb;
1258 hst->farewell_cb = farewell_cb;
1261 plc->op = GNUNET_OP_create ();
1263 hst->slicer = GNUNET_PSYC_slicer_create ();
1264 GNUNET_PSYC_slicer_method_add (hst->slicer, "_notice_place_leave", NULL,
1265 host_recv_notice_place_leave_method,
1266 host_recv_notice_place_leave_modifier,
1267 NULL, host_recv_notice_place_leave_eom, hst);
1269 uint16_t app_id_size = strlen (app->id) + 1;
1270 struct HostEnterRequest *hreq;
1271 plc->connect_env = GNUNET_MQ_msg_extra (hreq, app_id_size,
1272 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER);
1273 hreq->policy = policy;
1274 hreq->ego_pub_key = ego->pub_key;
1275 GNUNET_memcpy (&hreq[1], app->id, app_id_size);
1283 * Reconnect to an already entered place as host.
1286 * Host connection handle.
1287 * @see GNUNET_SOCIAL_app_connect() & GNUNET_SOCIAL_AppHostPlaceCallback()
1289 * Slicer to handle incoming messages.
1291 * Function called when the place is entered and ready to use.
1292 * @param answer_door_cb
1293 * Function to handle new nyms that want to enter.
1294 * @param farewell_cb
1295 * Function to handle departing nyms.
1297 * Closure for the callbacks.
1299 * @return Handle for the host.
1301 struct GNUNET_SOCIAL_Host *
1302 GNUNET_SOCIAL_host_enter_reconnect (struct GNUNET_SOCIAL_HostConnection *hconn,
1303 struct GNUNET_PSYC_Slicer *slicer,
1304 GNUNET_SOCIAL_HostEnterCallback enter_cb,
1305 GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb,
1306 GNUNET_SOCIAL_FarewellCallback farewell_cb,
1309 struct GNUNET_SOCIAL_Host *hst = GNUNET_malloc (sizeof (*hst));
1310 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1312 hst->enter_cb = enter_cb;
1313 hst->answer_door_cb = answer_door_cb;
1314 hst->farewell_cb = farewell_cb;
1317 plc->cfg = hconn->app->cfg;
1318 plc->is_host = GNUNET_YES;
1319 plc->slicer = slicer;
1320 plc->pub_key = hconn->plc_msg.place_pub_key;
1321 plc->ego_pub_key = hconn->plc_msg.ego_pub_key;
1323 plc->op = GNUNET_OP_create ();
1325 hst->slicer = GNUNET_PSYC_slicer_create ();
1326 GNUNET_PSYC_slicer_method_add (hst->slicer, "_notice_place_leave", NULL,
1327 host_recv_notice_place_leave_method,
1328 host_recv_notice_place_leave_modifier,
1329 NULL, host_recv_notice_place_leave_eom, hst);
1331 size_t app_id_size = strlen (hconn->app->id) + 1;
1332 struct HostEnterRequest *hreq;
1333 plc->connect_env = GNUNET_MQ_msg_extra (hreq, app_id_size,
1334 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER);
1335 hreq->place_pub_key = hconn->plc_msg.place_pub_key;
1336 hreq->ego_pub_key = hconn->plc_msg.ego_pub_key;
1337 GNUNET_memcpy (&hreq[1], hconn->app->id, app_id_size);
1345 * Decision whether to admit @a nym into the place or refuse entry.
1348 * Host of the place.
1350 * Handle for the entity that wanted to enter.
1351 * @param is_admitted
1352 * #GNUNET_YES if @a nym is admitted,
1353 * #GNUNET_NO if @a nym is refused entry,
1354 * #GNUNET_SYSERR if we cannot answer the request.
1355 * @param method_name
1356 * Method name for the rejection message.
1358 * Environment containing variables for the message, or NULL.
1360 * Data for the rejection message to send back.
1362 * Number of bytes in @a data for method.
1363 * @return #GNUNET_OK on success,
1364 * #GNUNET_SYSERR if the message is too large.
1367 GNUNET_SOCIAL_host_entry_decision (struct GNUNET_SOCIAL_Host *hst,
1368 struct GNUNET_SOCIAL_Nym *nym,
1370 const struct GNUNET_PSYC_Message *entry_resp)
1372 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1373 struct GNUNET_PSYC_JoinDecisionMessage *dcsn;
1374 uint16_t entry_resp_size
1375 = (NULL != entry_resp) ? ntohs (entry_resp->header.size) : 0;
1377 if (GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD < sizeof (*dcsn) + entry_resp_size)
1378 return GNUNET_SYSERR;
1380 struct GNUNET_MQ_Envelope *
1381 env = GNUNET_MQ_msg_extra (dcsn, entry_resp_size,
1382 GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION);
1383 dcsn->is_admitted = htonl (is_admitted);
1384 dcsn->slave_pub_key = nym->pub_key;
1386 if (0 < entry_resp_size)
1387 GNUNET_memcpy (&dcsn[1], entry_resp, entry_resp_size);
1389 GNUNET_MQ_send (plc->mq, env);
1395 * Throw @a nym out of the place.
1397 * The @a nym reference will remain valid until the
1398 * #GNUNET_SOCIAL_FarewellCallback is invoked,
1399 * which should be very soon after this call.
1402 * Host of the place.
1404 * Handle for the entity to be ejected.
1406 * Environment for the message or NULL.
1409 GNUNET_SOCIAL_host_eject (struct GNUNET_SOCIAL_Host *hst,
1410 const struct GNUNET_SOCIAL_Nym *nym,
1411 struct GNUNET_PSYC_Environment *e)
1413 struct GNUNET_PSYC_Environment *env = e;
1415 env = GNUNET_PSYC_env_create ();
1416 GNUNET_PSYC_env_add (env, GNUNET_PSYC_OP_SET,
1417 "_nym", &nym->pub_key, sizeof (nym->pub_key));
1418 GNUNET_SOCIAL_host_announce (hst, "_notice_place_leave", env, NULL, NULL,
1419 GNUNET_SOCIAL_ANNOUNCE_NONE);
1421 GNUNET_PSYC_env_destroy (env);
1426 * Get the public key of @a ego.
1431 * @return Public key of ego.
1433 const struct GNUNET_CRYPTO_EcdsaPublicKey *
1434 GNUNET_SOCIAL_ego_get_pub_key (const struct GNUNET_SOCIAL_Ego *ego)
1436 return &ego->pub_key;
1441 * Get the hash of the public key of @a ego.
1446 * @return Hash of the public key of @a ego.
1448 const struct GNUNET_HashCode *
1449 GNUNET_SOCIAL_ego_get_pub_key_hash (const struct GNUNET_SOCIAL_Ego *ego)
1451 return &ego->pub_key_hash;
1456 * Get the name of @a ego.
1461 * @return Public key of @a ego.
1464 GNUNET_SOCIAL_ego_get_name (const struct GNUNET_SOCIAL_Ego *ego)
1471 * Get the public key of @a nym.
1473 * Suitable, for example, to be used with GNUNET_SOCIAL_zone_add_nym().
1478 * @return Public key of @a nym.
1480 const struct GNUNET_CRYPTO_EcdsaPublicKey *
1481 GNUNET_SOCIAL_nym_get_pub_key (const struct GNUNET_SOCIAL_Nym *nym)
1483 return &nym->pub_key;
1488 * Get the hash of the public key of @a nym.
1493 * @return Hash of the public key of @a nym.
1495 const struct GNUNET_HashCode *
1496 GNUNET_SOCIAL_nym_get_pub_key_hash (const struct GNUNET_SOCIAL_Nym *nym)
1498 return &nym->pub_key_hash;
1503 * Send a message to all nyms that are present in the place.
1505 * This function is restricted to the host. Nyms can only send requests
1506 * to the host who can decide to relay it to everyone in the place.
1508 * @param host Host of the place.
1509 * @param method_name Method to use for the announcement.
1510 * @param env Environment containing variables for the message and operations
1511 * on objects of the place. Can be NULL.
1512 * @param notify Function to call to get the payload of the announcement.
1513 * @param notify_cls Closure for @a notify.
1514 * @param flags Flags for this announcement.
1516 * @return NULL on error (announcement already in progress?).
1518 struct GNUNET_SOCIAL_Announcement *
1519 GNUNET_SOCIAL_host_announce (struct GNUNET_SOCIAL_Host *hst,
1520 const char *method_name,
1521 const struct GNUNET_PSYC_Environment *env,
1522 GNUNET_PSYC_TransmitNotifyData notify_data,
1523 void *notify_data_cls,
1524 enum GNUNET_SOCIAL_AnnounceFlags flags)
1527 GNUNET_PSYC_transmit_message (hst->plc.tmit, method_name, env,
1528 NULL, notify_data, notify_data_cls, flags))
1529 return (struct GNUNET_SOCIAL_Announcement *) hst->plc.tmit;
1536 * Resume transmitting announcement.
1539 * The announcement to resume.
1542 GNUNET_SOCIAL_host_announce_resume (struct GNUNET_SOCIAL_Announcement *a)
1544 GNUNET_PSYC_transmit_resume ((struct GNUNET_PSYC_TransmitHandle *) a);
1549 * Cancel announcement.
1552 * The announcement to cancel.
1555 GNUNET_SOCIAL_host_announce_cancel (struct GNUNET_SOCIAL_Announcement *a)
1557 GNUNET_PSYC_transmit_cancel ((struct GNUNET_PSYC_TransmitHandle *) a);
1562 * Obtain handle for a hosted place.
1564 * The returned handle can be used to access the place API.
1566 * @param host Handle for the host.
1568 * @return Handle for the hosted place, valid as long as @a host is valid.
1570 struct GNUNET_SOCIAL_Place *
1571 GNUNET_SOCIAL_host_get_place (struct GNUNET_SOCIAL_Host *hst)
1578 * Disconnect from a home.
1580 * Invalidates host handle.
1583 * The host to disconnect.
1586 GNUNET_SOCIAL_host_disconnect (struct GNUNET_SOCIAL_Host *hst,
1587 GNUNET_ContinuationCallback disconnect_cb,
1590 struct GNUNET_SOCIAL_Place *plc = &hst->plc;
1592 plc->disconnect_cb = disconnect_cb;
1593 plc->disconnect_cls = cls;
1594 place_disconnect (plc);
1599 * Stop hosting the home.
1601 * Sends a _notice_place_closing announcement to the home.
1602 * Invalidates host handle.
1607 * Environment for the message or NULL.
1608 * _nym is set to @e nym regardless whether an @e env is provided.
1609 * @param disconnect_cb
1610 * Function called after the host left the place
1611 * and disconnected from the social service.
1613 * Closure for @a disconnect_cb.
1616 GNUNET_SOCIAL_host_leave (struct GNUNET_SOCIAL_Host *hst,
1617 const struct GNUNET_PSYC_Environment *env,
1618 GNUNET_ContinuationCallback disconnect_cb,
1621 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1622 "GNUNET_SOCIAL_host_leave\n");
1623 GNUNET_SOCIAL_host_announce (hst, "_notice_place_closing", env, NULL, NULL,
1624 GNUNET_SOCIAL_ANNOUNCE_NONE);
1625 place_leave (&hst->plc);
1626 GNUNET_SOCIAL_host_disconnect (hst, disconnect_cb, cls);
1634 guest_connect (struct GNUNET_SOCIAL_Guest *gst);
1638 guest_reconnect (void *cls)
1640 guest_connect (cls);
1645 * Guest client disconnected from service.
1647 * Reconnect after backoff period.
1650 guest_disconnected (void *cls, enum GNUNET_MQ_Error error)
1652 struct GNUNET_SOCIAL_Guest *gst = cls;
1653 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1655 LOG (GNUNET_ERROR_TYPE_DEBUG,
1656 "Guest client disconnected (%d), re-connecting\n",
1658 if (NULL != plc->tmit)
1660 GNUNET_PSYC_transmit_destroy (plc->tmit);
1663 if (NULL != plc->mq)
1665 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1666 "destroying MQ (guest_disconnected)\n");
1667 GNUNET_MQ_destroy (plc->mq);
1671 plc->reconnect_task = GNUNET_SCHEDULER_add_delayed (plc->reconnect_delay,
1674 plc->reconnect_delay = GNUNET_TIME_STD_BACKOFF (plc->reconnect_delay);
1679 guest_connect (struct GNUNET_SOCIAL_Guest *gst)
1681 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1683 struct GNUNET_MQ_MessageHandler handlers[] = {
1684 GNUNET_MQ_hd_fixed_size (guest_enter_ack,
1685 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_ACK,
1686 struct GNUNET_PSYC_CountersResultMessage,
1688 GNUNET_MQ_hd_var_size (guest_enter_decision,
1689 GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION,
1690 struct GNUNET_PSYC_JoinDecisionMessage,
1692 GNUNET_MQ_hd_var_size (place_message,
1693 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE,
1694 struct GNUNET_PSYC_MessageHeader,
1696 GNUNET_MQ_hd_fixed_size (place_message_ack,
1697 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK,
1698 struct GNUNET_MessageHeader,
1700 GNUNET_MQ_hd_var_size (place_history_result,
1701 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT,
1702 struct GNUNET_OperationResultMessage,
1704 GNUNET_MQ_hd_var_size (place_state_result,
1705 GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT,
1706 struct GNUNET_OperationResultMessage,
1708 GNUNET_MQ_hd_var_size (place_result,
1709 GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE,
1710 struct GNUNET_OperationResultMessage,
1712 GNUNET_MQ_handler_end ()
1715 plc->mq = GNUNET_CLIENT_connect (plc->cfg, "social",
1716 handlers, guest_disconnected, gst);
1717 GNUNET_assert (NULL != plc->mq);
1718 plc->tmit = GNUNET_PSYC_transmit_create (plc->mq);
1720 GNUNET_MQ_send_copy (plc->mq, plc->connect_env);
1724 static struct GNUNET_MQ_Envelope *
1725 guest_enter_request_create (const char *app_id,
1726 const struct GNUNET_CRYPTO_EcdsaPublicKey *ego_pub_key,
1727 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
1728 const struct GNUNET_PeerIdentity *origin,
1730 const struct GNUNET_PeerIdentity *relays,
1731 const struct GNUNET_PSYC_Message *join_msg)
1733 uint16_t app_id_size = strlen (app_id) + 1;
1734 uint16_t join_msg_size = ntohs (join_msg->header.size);
1735 uint16_t relay_size = relay_count * sizeof (*relays);
1737 struct GuestEnterRequest *greq;
1738 struct GNUNET_MQ_Envelope *
1739 env = GNUNET_MQ_msg_extra (greq, app_id_size + relay_size + join_msg_size,
1740 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER);
1741 greq->place_pub_key = *place_pub_key;
1742 greq->ego_pub_key = *ego_pub_key;
1743 greq->origin = *origin;
1744 greq->relay_count = htonl (relay_count);
1746 char *p = (char *) &greq[1];
1747 GNUNET_memcpy (p, app_id, app_id_size);
1752 GNUNET_memcpy (p, relays, relay_size);
1756 GNUNET_memcpy (p, join_msg, join_msg_size);
1762 * Request entry to a place as a guest.
1765 * Application handle.
1767 * Identity of the guest.
1768 * @param place_pub_key
1769 * Public key of the place to enter.
1771 * Flags for the entry.
1773 * Peer identity of the origin of the underlying multicast group.
1774 * @param relay_count
1775 * Number of elements in the @a relays array.
1777 * Relays for the underlying multicast group.
1778 * @param method_name
1779 * Method name for the message.
1781 * Environment containing variables for the message, or NULL.
1783 * Payload for the message to give to the enter callback.
1785 * Number of bytes in @a data.
1787 * Slicer to use for processing incoming requests from guests.
1789 * @return NULL on errors, otherwise handle for the guest.
1791 struct GNUNET_SOCIAL_Guest *
1792 GNUNET_SOCIAL_guest_enter (const struct GNUNET_SOCIAL_App *app,
1793 const struct GNUNET_SOCIAL_Ego *ego,
1794 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
1795 enum GNUNET_PSYC_SlaveJoinFlags flags,
1796 const struct GNUNET_PeerIdentity *origin,
1797 uint32_t relay_count,
1798 const struct GNUNET_PeerIdentity *relays,
1799 const struct GNUNET_PSYC_Message *entry_msg,
1800 struct GNUNET_PSYC_Slicer *slicer,
1801 GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
1802 GNUNET_SOCIAL_EntryDecisionCallback entry_dcsn_cb,
1805 struct GNUNET_SOCIAL_Guest *gst = GNUNET_malloc (sizeof (*gst));
1806 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1808 plc->ego_pub_key = ego->pub_key;
1809 plc->pub_key = *place_pub_key;
1810 plc->cfg = app->cfg;
1811 plc->is_host = GNUNET_NO;
1812 plc->slicer = slicer;
1814 plc->op = GNUNET_OP_create ();
1817 = guest_enter_request_create (app->id, &ego->pub_key, &plc->pub_key,
1818 origin, relay_count, relays, entry_msg);
1820 gst->enter_cb = local_enter_cb;
1821 gst->entry_dcsn_cb = entry_dcsn_cb;
1824 guest_connect (gst);
1830 * Request entry to a place by name as a guest.
1833 * Application handle.
1835 * Identity of the guest.
1837 * GNS name of the place to enter. Either in the form of
1838 * 'room.friend.gnu', or 'NYMPUBKEY.zkey'. This latter case refers to
1839 * the 'PLACE' record of the empty label ("+") in the GNS zone with the
1840 * nym's public key 'NYMPUBKEY', and can be used to request entry to a
1841 * pseudonym's place directly.
1843 * Password to decrypt the record, or NULL for cleartext records.
1845 * Entry request message or NULL.
1847 * Slicer to use for processing incoming requests from guests.
1848 * @param local_enter_cb
1849 * Called upon connection established to the social service.
1850 * @param entry_decision_cb
1851 * Called upon receiving entry decision.
1853 * @return NULL on errors, otherwise handle for the guest.
1855 struct GNUNET_SOCIAL_Guest *
1856 GNUNET_SOCIAL_guest_enter_by_name (const struct GNUNET_SOCIAL_App *app,
1857 const struct GNUNET_SOCIAL_Ego *ego,
1858 const char *gns_name,
1859 const char *password,
1860 const struct GNUNET_PSYC_Message *join_msg,
1861 struct GNUNET_PSYC_Slicer *slicer,
1862 GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
1863 GNUNET_SOCIAL_EntryDecisionCallback entry_decision_cb,
1866 struct GNUNET_SOCIAL_Guest *gst = GNUNET_malloc (sizeof (*gst));
1867 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1869 if (NULL == password)
1872 uint16_t app_id_size = strlen (app->id) + 1;
1873 uint16_t gns_name_size = strlen (gns_name) + 1;
1874 uint16_t password_size = strlen (password) + 1;
1876 uint16_t join_msg_size = 0;
1877 if (NULL != join_msg)
1878 join_msg_size = ntohs (join_msg->header.size);
1880 struct GuestEnterByNameRequest *greq;
1882 = GNUNET_MQ_msg_extra (greq, app_id_size + gns_name_size
1883 + password_size + join_msg_size,
1884 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_BY_NAME);
1886 greq->ego_pub_key = ego->pub_key;
1888 char *p = (char *) &greq[1];
1889 GNUNET_memcpy (p, app->id, app_id_size);
1891 GNUNET_memcpy (p, gns_name, gns_name_size);
1893 GNUNET_memcpy (p, password, password_size);
1895 if (NULL != join_msg)
1896 GNUNET_memcpy (p, join_msg, join_msg_size);
1898 plc->ego_pub_key = ego->pub_key;
1899 plc->cfg = app->cfg;
1900 plc->is_host = GNUNET_NO;
1901 plc->slicer = slicer;
1903 plc->op = GNUNET_OP_create ();
1905 gst->enter_cb = local_enter_cb;
1906 gst->entry_dcsn_cb = entry_decision_cb;
1909 guest_connect (gst);
1915 * Reconnect to an already entered place as guest.
1918 * Guest connection handle.
1919 * @see GNUNET_SOCIAL_app_connect() & GNUNET_SOCIAL_AppGuestPlaceCallback()
1921 * Flags for the entry.
1923 * Slicer to use for processing incoming requests from guests.
1924 * @param local_enter_cb
1925 * Called upon connection established to the social service.
1926 * @param entry_decision_cb
1927 * Called upon receiving entry decision.
1929 * @return NULL on errors, otherwise handle for the guest.
1931 struct GNUNET_SOCIAL_Guest *
1932 GNUNET_SOCIAL_guest_enter_reconnect (struct GNUNET_SOCIAL_GuestConnection *gconn,
1933 enum GNUNET_PSYC_SlaveJoinFlags flags,
1934 struct GNUNET_PSYC_Slicer *slicer,
1935 GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
1938 struct GNUNET_SOCIAL_Guest *gst = GNUNET_malloc (sizeof (*gst));
1939 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1941 uint16_t app_id_size = strlen (gconn->app->id) + 1;
1942 struct GuestEnterRequest *greq;
1944 = GNUNET_MQ_msg_extra (greq, app_id_size,
1945 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER);
1946 greq->ego_pub_key = gconn->plc_msg.ego_pub_key;
1947 greq->place_pub_key = gconn->plc_msg.place_pub_key;
1948 greq->flags = htonl (flags);
1950 GNUNET_memcpy (&greq[1], gconn->app->id, app_id_size);
1952 plc->cfg = gconn->app->cfg;
1953 plc->is_host = GNUNET_NO;
1954 plc->slicer = slicer;
1955 plc->pub_key = gconn->plc_msg.place_pub_key;
1956 plc->ego_pub_key = gconn->plc_msg.ego_pub_key;
1958 plc->op = GNUNET_OP_create ();
1960 gst->enter_cb = local_enter_cb;
1963 guest_connect (gst);
1969 * Talk to the host of the place.
1972 * Place where we want to talk to the host.
1973 * @param method_name
1974 * Method to invoke on the host.
1976 * Environment containing variables for the message, or NULL.
1977 * @param notify_data
1978 * Function to use to get the payload for the method.
1979 * @param notify_data_cls
1980 * Closure for @a notify_data.
1982 * Flags for the message being sent.
1984 * @return NULL if we are already trying to talk to the host,
1985 * otherwise handle to cancel the request.
1987 struct GNUNET_SOCIAL_TalkRequest *
1988 GNUNET_SOCIAL_guest_talk (struct GNUNET_SOCIAL_Guest *gst,
1989 const char *method_name,
1990 const struct GNUNET_PSYC_Environment *env,
1991 GNUNET_PSYC_TransmitNotifyData notify_data,
1992 void *notify_data_cls,
1993 enum GNUNET_SOCIAL_TalkFlags flags)
1995 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
1996 GNUNET_assert (NULL != plc->tmit);
1999 GNUNET_PSYC_transmit_message (plc->tmit, method_name, env,
2000 NULL, notify_data, notify_data_cls, flags))
2001 return (struct GNUNET_SOCIAL_TalkRequest *) plc->tmit;
2008 * Resume talking to the host of the place.
2011 * Talk request to resume.
2014 GNUNET_SOCIAL_guest_talk_resume (struct GNUNET_SOCIAL_TalkRequest *tr)
2016 GNUNET_PSYC_transmit_resume ((struct GNUNET_PSYC_TransmitHandle *) tr);
2021 * Cancel talking to the host of the place.
2024 * Talk request to cancel.
2027 GNUNET_SOCIAL_guest_talk_cancel (struct GNUNET_SOCIAL_TalkRequest *tr)
2029 GNUNET_PSYC_transmit_cancel ( (struct GNUNET_PSYC_TransmitHandle *) tr);
2034 * Disconnect from a place.
2036 * Invalidates guest handle.
2039 * The guest to disconnect.
2042 GNUNET_SOCIAL_guest_disconnect (struct GNUNET_SOCIAL_Guest *gst,
2043 GNUNET_ContinuationCallback disconnect_cb,
2046 struct GNUNET_SOCIAL_Place *plc = &gst->plc;
2048 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2049 "GNUNET_SOCIAL_guest_disconnect, gst = %p\n",
2051 plc->disconnect_cb = disconnect_cb;
2052 plc->disconnect_cls = cls;
2053 place_disconnect (plc);
2058 * Leave a place temporarily or permanently.
2060 * Notifies the owner of the place about leaving, and destroys the place handle.
2064 * @param keep_active
2065 * Keep place active after last application disconnected.
2066 * #GNUNET_YES or #GNUNET_NO
2068 * Optional environment for the leave message if @a keep_active
2069 * is #GNUNET_NO. NULL if not needed.
2071 * Called upon disconnecting from the social service.
2074 GNUNET_SOCIAL_guest_leave (struct GNUNET_SOCIAL_Guest *gst,
2075 struct GNUNET_PSYC_Environment *env,
2076 GNUNET_ContinuationCallback disconnect_cb,
2079 GNUNET_SOCIAL_guest_talk (gst, "_notice_place_leave", env, NULL, NULL,
2080 GNUNET_SOCIAL_TALK_NONE);
2081 place_leave (&gst->plc);
2082 GNUNET_SOCIAL_guest_disconnect (gst, disconnect_cb, cls);
2087 * Obtain handle for a place entered as guest.
2089 * The returned handle can be used to access the place API.
2091 * @param guest Handle for the guest.
2093 * @return Handle for the place, valid as long as @a guest is valid.
2095 struct GNUNET_SOCIAL_Place *
2096 GNUNET_SOCIAL_guest_get_place (struct GNUNET_SOCIAL_Guest *gst)
2103 * Obtain the public key of a place.
2108 * @return Public key of the place.
2110 const struct GNUNET_CRYPTO_EddsaPublicKey *
2111 GNUNET_SOCIAL_place_get_pub_key (const struct GNUNET_SOCIAL_Place *plc)
2113 return &plc->pub_key;
2118 * Set message processing @a flags for a @a method_prefix.
2122 * @param method_prefix
2123 * Method prefix @a flags apply to.
2125 * The flags that apply to a matching @a method_prefix.
2128 GNUNET_SOCIAL_place_msg_proc_set (struct GNUNET_SOCIAL_Place *plc,
2129 const char *method_prefix,
2130 enum GNUNET_SOCIAL_MsgProcFlags flags)
2132 GNUNET_assert (NULL != method_prefix);
2133 struct MsgProcRequest *mpreq;
2134 uint16_t method_size = strnlen (method_prefix,
2135 GNUNET_MAX_MESSAGE_SIZE
2136 - sizeof (*mpreq)) + 1;
2137 GNUNET_assert ('\0' == method_prefix[method_size - 1]);
2139 struct GNUNET_MQ_Envelope *
2140 env = GNUNET_MQ_msg_extra (mpreq, method_size,
2141 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_SET);
2142 mpreq->flags = htonl (flags);
2143 GNUNET_memcpy (&mpreq[1], method_prefix, method_size);
2145 GNUNET_MQ_send (plc->mq, env);
2150 * Clear all message processing flags previously set for this place.
2153 GNUNET_SOCIAL_place_msg_proc_clear (struct GNUNET_SOCIAL_Place *plc)
2155 struct GNUNET_MessageHeader *req;
2156 struct GNUNET_MQ_Envelope *
2157 env = GNUNET_MQ_msg (req, GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_CLEAR);
2159 GNUNET_MQ_send (plc->mq, env);
2163 static struct GNUNET_SOCIAL_HistoryRequest *
2164 place_history_replay (struct GNUNET_SOCIAL_Place *plc,
2165 uint64_t start_message_id,
2166 uint64_t end_message_id,
2167 uint64_t message_limit,
2168 const char *method_prefix,
2170 struct GNUNET_PSYC_Slicer *slicer,
2171 GNUNET_ResultCallback result_cb,
2174 struct GNUNET_PSYC_HistoryRequestMessage *req;
2175 struct GNUNET_SOCIAL_HistoryRequest *hist = GNUNET_malloc (sizeof (*hist));
2177 hist->slicer = slicer;
2178 hist->result_cb = result_cb;
2180 hist->op_id = GNUNET_OP_add (plc->op, op_recv_history_result, hist, NULL);
2182 GNUNET_assert (NULL != method_prefix);
2183 uint16_t method_size = strnlen (method_prefix,
2184 GNUNET_MAX_MESSAGE_SIZE
2185 - sizeof (*req)) + 1;
2186 GNUNET_assert ('\0' == method_prefix[method_size - 1]);
2188 struct GNUNET_MQ_Envelope *
2189 env = GNUNET_MQ_msg_extra (req, method_size,
2190 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_REPLAY);
2191 req->start_message_id = GNUNET_htonll (start_message_id);
2192 req->end_message_id = GNUNET_htonll (end_message_id);
2193 req->message_limit = GNUNET_htonll (message_limit);
2194 req->flags = htonl (flags);
2195 req->op_id = GNUNET_htonll (hist->op_id);
2196 GNUNET_memcpy (&req[1], method_prefix, method_size);
2198 GNUNET_MQ_send (plc->mq, env);
2204 * Learn about the history of a place.
2206 * Messages are returned through the @a slicer function
2207 * and have the #GNUNET_PSYC_MESSAGE_HISTORIC flag set.
2210 * Place we want to learn more about.
2211 * @param start_message_id
2212 * First historic message we are interested in.
2213 * @param end_message_id
2214 * Last historic message we are interested in (inclusive).
2215 * @param method_prefix
2216 * Only retrieve messages with this method prefix.
2218 * OR'ed GNUNET_PSYC_HistoryReplayFlags
2220 * Slicer to use for retrieved messages.
2221 * Can be the same as the slicer of the place.
2223 * Function called after all messages retrieved.
2224 * NULL if not needed.
2225 * @param cls Closure for @a result_cb.
2227 struct GNUNET_SOCIAL_HistoryRequest *
2228 GNUNET_SOCIAL_place_history_replay (struct GNUNET_SOCIAL_Place *plc,
2229 uint64_t start_message_id,
2230 uint64_t end_message_id,
2231 const char *method_prefix,
2233 struct GNUNET_PSYC_Slicer *slicer,
2234 GNUNET_ResultCallback result_cb,
2237 return place_history_replay (plc, start_message_id, end_message_id, 0,
2238 method_prefix, flags, slicer, result_cb, cls);
2243 * Learn about the history of a place.
2245 * Sends messages through the slicer function of the place where
2246 * start_message_id <= message_id <= end_message_id.
2247 * The messages will have the #GNUNET_PSYC_MESSAGE_HISTORIC flag set.
2249 * To get the latest message, use 0 for both the start and end message ID.
2252 * Place we want to learn more about.
2253 * @param message_limit
2254 * Maximum number of historic messages we are interested in.
2255 * @param method_prefix
2256 * Only retrieve messages with this method prefix.
2258 * OR'ed GNUNET_PSYC_HistoryReplayFlags
2260 * Function called after all messages retrieved.
2261 * NULL if not needed.
2262 * @param cls Closure for @a result_cb.
2264 struct GNUNET_SOCIAL_HistoryRequest *
2265 GNUNET_SOCIAL_place_history_replay_latest (struct GNUNET_SOCIAL_Place *plc,
2266 uint64_t message_limit,
2267 const char *method_prefix,
2269 struct GNUNET_PSYC_Slicer *slicer,
2270 GNUNET_ResultCallback result_cb,
2273 return place_history_replay (plc, 0, 0, message_limit, method_prefix, flags,
2274 slicer, result_cb, cls);
2279 * Cancel learning about the history of a place.
2282 * History lesson to cancel.
2285 GNUNET_SOCIAL_place_history_replay_cancel (struct GNUNET_SOCIAL_HistoryRequest *hist)
2287 GNUNET_OP_remove (hist->plc->op, hist->op_id);
2293 * Request matching state variables.
2295 static struct GNUNET_SOCIAL_LookHandle *
2296 place_state_get (struct GNUNET_SOCIAL_Place *plc,
2297 uint16_t type, const char *name,
2298 GNUNET_PSYC_StateVarCallback var_cb,
2299 GNUNET_ResultCallback result_cb, void *cls)
2301 struct GNUNET_PSYC_StateRequestMessage *req;
2302 struct GNUNET_SOCIAL_LookHandle *look = GNUNET_malloc (sizeof (*look));
2304 look->var_cb = var_cb;
2305 look->result_cb = result_cb;
2307 look->op_id = GNUNET_OP_add (plc->op, &op_recv_state_result, look, NULL);
2309 GNUNET_assert (NULL != name);
2310 size_t name_size = strnlen (name, GNUNET_MAX_MESSAGE_SIZE
2311 - sizeof (*req)) + 1;
2312 struct GNUNET_MQ_Envelope *
2313 env = GNUNET_MQ_msg_extra (req, name_size, type);
2314 req->op_id = GNUNET_htonll (look->op_id);
2315 GNUNET_memcpy (&req[1], name, name_size);
2317 GNUNET_MQ_send (plc->mq, env);
2323 * Look at a particular object in the place.
2325 * The best matching object is returned (its name might be less specific than
2326 * what was requested).
2329 * The place where to look.
2331 * Full name of the object.
2333 * Set to the size of the returned value.
2335 * @return NULL if there is no such object at this place.
2337 struct GNUNET_SOCIAL_LookHandle *
2338 GNUNET_SOCIAL_place_look_at (struct GNUNET_SOCIAL_Place *plc,
2339 const char *full_name,
2340 GNUNET_PSYC_StateVarCallback var_cb,
2341 GNUNET_ResultCallback result_cb,
2344 return place_state_get (plc, GNUNET_MESSAGE_TYPE_PSYC_STATE_GET,
2345 full_name, var_cb, result_cb, cls);
2350 * Look for objects in the place with a matching name prefix.
2353 * The place where to look.
2354 * @param name_prefix
2355 * Look at objects with names beginning with this value.
2357 * Function to call for each object found.
2359 * Closure for callback function.
2361 * @return Handle that can be used to stop looking at objects.
2363 struct GNUNET_SOCIAL_LookHandle *
2364 GNUNET_SOCIAL_place_look_for (struct GNUNET_SOCIAL_Place *plc,
2365 const char *name_prefix,
2366 GNUNET_PSYC_StateVarCallback var_cb,
2367 GNUNET_ResultCallback result_cb,
2370 return place_state_get (plc, GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX,
2371 name_prefix, var_cb, result_cb, cls);
2376 * Cancel a state request operation.
2379 * Handle for the operation to cancel.
2382 GNUNET_SOCIAL_place_look_cancel (struct GNUNET_SOCIAL_LookHandle *look)
2384 GNUNET_OP_remove (look->plc->op, look->op_id);
2390 op_recv_zone_add_place_result (void *cls, int64_t result,
2391 const void *err_msg, uint16_t err_msg_size)
2393 LOG (GNUNET_ERROR_TYPE_DEBUG,
2394 "Received zone add place result: %" PRId64 ".\n", result);
2396 struct ZoneAddPlaceHandle *add_plc = cls;
2397 if (NULL != add_plc->result_cb)
2398 add_plc->result_cb (add_plc->result_cls, result, err_msg, err_msg_size);
2400 GNUNET_free (add_plc);
2405 * Advertise @e place in the GNS zone of @e ego.
2408 * Application handle.
2411 * @param place_pub_key
2412 * Public key of place to add.
2414 * The name for the PLACE record to put in the zone.
2416 * Password used to encrypt the record or NULL to keep it cleartext.
2417 * @param relay_count
2418 * Number of elements in the @a relays array.
2420 * List of relays to put in the PLACE record to advertise
2421 * as entry points to the place in addition to the origin.
2422 * @param expiration_time
2423 * Expiration time of the record, use 0 to remove the record.
2425 * Function called with the result of the operation.
2427 * Closure for @a result_cb
2429 * @return #GNUNET_OK if the request was sent,
2430 * #GNUNET_SYSERR on error, e.g. the name/password is too long.
2433 GNUNET_SOCIAL_zone_add_place (const struct GNUNET_SOCIAL_App *app,
2434 const struct GNUNET_SOCIAL_Ego *ego,
2436 const char *password,
2437 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
2438 const struct GNUNET_PeerIdentity *origin,
2439 uint32_t relay_count,
2440 const struct GNUNET_PeerIdentity *relays,
2441 struct GNUNET_TIME_Absolute expiration_time,
2442 GNUNET_ResultCallback result_cb,
2445 struct ZoneAddPlaceRequest *preq;
2446 size_t name_size = strlen (name) + 1;
2447 size_t password_size = strlen (password) + 1;
2448 size_t relay_size = relay_count * sizeof (*relays);
2449 size_t payload_size = name_size + password_size + relay_size;
2451 if (GNUNET_MAX_MESSAGE_SIZE < sizeof (*preq) + payload_size)
2452 return GNUNET_SYSERR;
2454 struct GNUNET_MQ_Envelope *
2455 env = GNUNET_MQ_msg_extra (preq, payload_size,
2456 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_PLACE);
2457 preq->expiration_time = GNUNET_htonll (expiration_time.abs_value_us);
2458 preq->ego_pub_key = ego->pub_key;
2459 preq->place_pub_key = *place_pub_key;
2460 preq->origin = *origin;
2461 preq->relay_count = htonl (relay_count);
2463 char *p = (char *) &preq[1];
2464 GNUNET_memcpy (p, name, name_size);
2466 GNUNET_memcpy (p, password, password_size);
2468 GNUNET_memcpy (p, relays, relay_size);
2470 struct ZoneAddPlaceHandle * add_plc = GNUNET_malloc (sizeof (*add_plc));
2471 add_plc->result_cb = result_cb;
2472 add_plc->result_cls = result_cls;
2474 preq->op_id = GNUNET_htonll (GNUNET_OP_add (app->op,
2475 op_recv_zone_add_place_result,
2478 GNUNET_MQ_send (app->mq, env);
2484 op_recv_zone_add_nym_result (void *cls, int64_t result,
2485 const void *err_msg, uint16_t err_msg_size)
2487 LOG (GNUNET_ERROR_TYPE_DEBUG,
2488 "Received zone add nym result: %" PRId64 ".\n", result);
2490 struct ZoneAddNymHandle *add_nym = cls;
2491 if (NULL != add_nym->result_cb)
2492 add_nym->result_cb (add_nym->result_cls, result, err_msg, err_msg_size);
2494 GNUNET_free (add_nym);
2499 * Add nym to the GNS zone of @e ego.
2506 * The name for the PKEY record to put in the zone.
2507 * @param nym_pub_key
2508 * Public key of nym to add.
2509 * @param expiration_time
2510 * Expiration time of the record, use 0 to remove the record.
2512 * Function called with the result of the operation.
2514 * Closure for @a result_cb
2516 * @return #GNUNET_OK if the request was sent,
2517 * #GNUNET_SYSERR on error, e.g. the name is too long.
2520 GNUNET_SOCIAL_zone_add_nym (const struct GNUNET_SOCIAL_App *app,
2521 const struct GNUNET_SOCIAL_Ego *ego,
2523 const struct GNUNET_CRYPTO_EcdsaPublicKey *nym_pub_key,
2524 struct GNUNET_TIME_Absolute expiration_time,
2525 GNUNET_ResultCallback result_cb,
2528 struct ZoneAddNymRequest *nreq;
2530 size_t name_size = strlen (name) + 1;
2531 if (GNUNET_MAX_MESSAGE_SIZE < sizeof (*nreq) + name_size)
2532 return GNUNET_SYSERR;
2534 struct GNUNET_MQ_Envelope *
2535 env = GNUNET_MQ_msg_extra (nreq, name_size,
2536 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_NYM);
2537 nreq->expiration_time = GNUNET_htonll (expiration_time.abs_value_us);
2538 nreq->ego_pub_key = ego->pub_key;
2539 nreq->nym_pub_key = *nym_pub_key;
2540 GNUNET_memcpy (&nreq[1], name, name_size);
2542 struct ZoneAddNymHandle *add_nym = GNUNET_malloc (sizeof (*add_nym));
2543 add_nym->result_cb = result_cb;
2544 add_nym->result_cls = result_cls;
2546 nreq->op_id = GNUNET_htonll (GNUNET_OP_add (app->op,
2547 op_recv_zone_add_nym_result,
2550 GNUNET_MQ_send (app->mq, env);
2559 app_connect (struct GNUNET_SOCIAL_App *app);
2563 app_reconnect (void *cls)
2570 * App client disconnected from service.
2572 * Reconnect after backoff period.
2575 app_disconnected (void *cls, enum GNUNET_MQ_Error error)
2577 struct GNUNET_SOCIAL_App *app = cls;
2579 LOG (GNUNET_ERROR_TYPE_DEBUG,
2580 "App client disconnected (%d), re-connecting\n",
2582 if (NULL != app->mq)
2584 GNUNET_MQ_destroy (app->mq);
2588 app->reconnect_task = GNUNET_SCHEDULER_add_delayed (app->reconnect_delay,
2591 app->reconnect_delay = GNUNET_TIME_STD_BACKOFF (app->reconnect_delay);
2596 app_connect (struct GNUNET_SOCIAL_App *app)
2598 struct GNUNET_MQ_MessageHandler handlers[] = {
2599 GNUNET_MQ_hd_var_size (app_ego,
2600 GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO,
2601 struct AppEgoMessage,
2603 GNUNET_MQ_hd_fixed_size (app_ego_end,
2604 GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO_END,
2605 struct GNUNET_MessageHeader,
2607 GNUNET_MQ_hd_var_size (app_place,
2608 GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE,
2609 struct AppPlaceMessage,
2611 GNUNET_MQ_hd_fixed_size (app_place_end,
2612 GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE_END,
2613 struct GNUNET_MessageHeader,
2615 GNUNET_MQ_hd_var_size (app_result,
2616 GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE,
2617 struct GNUNET_OperationResultMessage,
2619 GNUNET_MQ_handler_end ()
2622 app->mq = GNUNET_CLIENT_connect (app->cfg, "social",
2623 handlers, app_disconnected, app);
2624 GNUNET_assert (NULL != app->mq);
2625 GNUNET_MQ_send_copy (app->mq, app->connect_env);
2630 * Connect application to the social service.
2632 * The @host_place_cb and @guest_place_cb functions are
2633 * initially called for each entered places,
2634 * then later each time a new place is entered with the current application ID.
2641 * Function to notify about an available ego.
2643 * Function to notify about a place entered as host.
2645 * Function to notify about a place entered as guest.
2647 * Closure for the callbacks.
2649 * @return Handle that can be used to stop listening.
2651 struct GNUNET_SOCIAL_App *
2652 GNUNET_SOCIAL_app_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
2654 GNUNET_SOCIAL_AppEgoCallback ego_cb,
2655 GNUNET_SOCIAL_AppHostPlaceCallback host_cb,
2656 GNUNET_SOCIAL_AppGuestPlaceCallback guest_cb,
2657 GNUNET_SOCIAL_AppConnectedCallback connected_cb,
2660 uint16_t app_id_size = strnlen (id, GNUNET_SOCIAL_APP_MAX_ID_SIZE);
2661 if (GNUNET_SOCIAL_APP_MAX_ID_SIZE == app_id_size)
2665 struct GNUNET_SOCIAL_App *app = GNUNET_malloc (sizeof *app);
2667 app->ego_cb = ego_cb;
2668 app->host_cb = host_cb;
2669 app->guest_cb = guest_cb;
2670 app->connected_cb = connected_cb;
2672 app->egos = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
2673 app->op = GNUNET_OP_create ();
2674 app->id = GNUNET_malloc (app_id_size);
2675 GNUNET_memcpy (app->id, id, app_id_size);
2677 struct AppConnectRequest *creq;
2678 app->connect_env = GNUNET_MQ_msg_extra (creq, app_id_size,
2679 GNUNET_MESSAGE_TYPE_SOCIAL_APP_CONNECT);
2680 GNUNET_memcpy (&creq[1], app->id, app_id_size);
2688 app_cleanup (struct GNUNET_SOCIAL_App *app)
2690 if (NULL != app->mq)
2692 GNUNET_MQ_destroy (app->mq);
2695 if (NULL != app->disconnect_cb)
2697 app->disconnect_cb (app->disconnect_cls);
2698 app->disconnect_cb = NULL;
2704 * Disconnect application.
2707 * Application handle.
2708 * @param disconnect_cb
2709 * Disconnect callback.
2710 * @param disconnect_cls
2711 * Disconnect closure.
2714 GNUNET_SOCIAL_app_disconnect (struct GNUNET_SOCIAL_App *app,
2715 GNUNET_ContinuationCallback disconnect_cb,
2716 void *disconnect_cls)
2718 app->disconnect_cb = disconnect_cb;
2719 app->disconnect_cls = disconnect_cls;
2721 if (NULL != app->mq)
2723 struct GNUNET_MQ_Envelope *env = GNUNET_MQ_get_last_envelope (app->mq);
2726 GNUNET_MQ_notify_sent (env, (GNUNET_SCHEDULER_TaskCallback) app_cleanup, app);
2741 * Detach application from a place.
2743 * Removes the place from the entered places list for this application.
2744 * Note: this does not disconnect from the place.
2746 * @see GNUNET_SOCIAL_host_disconnect() and GNUNET_SOCIAL_guest_disconnect()
2754 GNUNET_SOCIAL_app_detach (struct GNUNET_SOCIAL_App *app,
2755 struct GNUNET_SOCIAL_Place *plc)
2757 struct AppDetachRequest *dreq;
2758 struct GNUNET_MQ_Envelope *
2759 env = GNUNET_MQ_msg (dreq, GNUNET_MESSAGE_TYPE_SOCIAL_APP_DETACH);
2760 dreq->place_pub_key = plc->pub_key;
2761 dreq->ego_pub_key = plc->ego_pub_key;
2763 GNUNET_MQ_send (app->mq, env);
2767 /* end of social_api.c */