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 * @file social/gnunet-service-social.c
23 * @brief Social service
24 * @author Gabor X Toth
31 #include "gnunet_util_lib.h"
32 #include "gnunet_constants.h"
33 #include "gnunet_protocols.h"
34 #include "gnunet_core_service.h"
35 #include "gnunet_identity_service.h"
36 #include "gnunet_namestore_service.h"
37 #include "gnunet_gns_service.h"
38 #include "gnunet_statistics_service.h"
39 #include "gnunet_psyc_service.h"
40 #include "gnunet_psyc_util_lib.h"
41 #include "gnunet_social_service.h"
46 * Handle to our current configuration.
48 static const struct GNUNET_CONFIGURATION_Handle *cfg;
50 /* Handles to other services */
51 static struct GNUNET_CORE_Handle *core;
52 static struct GNUNET_IDENTITY_Handle *id;
53 static struct GNUNET_GNS_Handle *gns;
54 static struct GNUNET_NAMESTORE_Handle *namestore;
55 static struct GNUNET_STATISTICS_Handle *stats;
60 static struct GNUNET_PeerIdentity this_peer;
63 * Notification context, simplifies client broadcasts.
65 static struct GNUNET_SERVER_NotificationContext *nc;
68 * All connected hosts.
69 * H(place_pub_key) -> struct Host
71 static struct GNUNET_CONTAINER_MultiHashMap *hosts;
74 * All connected guests.
75 * H(place_pub_key) -> struct Guest
77 static struct GNUNET_CONTAINER_MultiHashMap *guests;
80 * Connected guests per place.
81 * H(place_pub_key) -> ego_pub_key -> struct Guest
83 static struct GNUNET_CONTAINER_MultiHashMap *place_guests;
86 * Places entered as host or guest.
87 * H(place_pub_key) -> struct HostEnterRequest OR struct GuestEnterRequest
89 static struct GNUNET_CONTAINER_MultiHashMap *places;
92 * Places entered per application.
93 * H(app_id) -> H(place_pub_key) -> NULL
95 static struct GNUNET_CONTAINER_MultiHashMap *apps_places;
98 * Application subscriptions per place.
99 * H(place_pub_key) -> H(app_id)
101 static struct GNUNET_CONTAINER_MultiHashMap *places_apps;
104 * Connected applications.
105 * H(app_id) -> struct Application
107 static struct GNUNET_CONTAINER_MultiHashMap *apps;
111 * H(ego_pub_key) -> struct Ego
113 static struct GNUNET_CONTAINER_MultiHashMap *egos;
116 * Directory for storing social data.
117 * Default: $GNUNET_DATA_HOME/social
119 static char *dir_social;
122 * Directory for storing place data.
125 static char *dir_places;
128 * Directory for storing app data.
131 static char *dir_apps;
135 * Message fragment transmission queue.
137 struct FragmentTransmitQueue
139 struct FragmentTransmitQueue *prev;
140 struct FragmentTransmitQueue *next;
142 struct GNUNET_SERVER_Client *client;
145 * Pointer to the next message part inside the data after this struct.
147 struct GNUNET_MessageHeader *next_part;
155 * @see enum GNUNET_PSYC_MessageState
159 /* Followed by one or more message parts. */
164 * Message transmission queue.
166 struct MessageTransmitQueue
168 struct MessageTransmitQueue *prev;
169 struct MessageTransmitQueue *next;
171 struct FragmentTransmitQueue *frags_head;
172 struct FragmentTransmitQueue *frags_tail;
174 struct GNUNET_SERVER_Client *client;
178 * List of connected clients.
180 struct ClientListItem
182 struct ClientListItem *prev;
183 struct ClientListItem *next;
185 struct GNUNET_SERVER_Client *client;
190 * Common part of the client context for both a host and guest.
194 struct ClientListItem *clients_head;
195 struct ClientListItem *clients_tail;
197 struct MessageTransmitQueue *tmit_msgs_head;
198 struct MessageTransmitQueue *tmit_msgs_tail;
200 struct GNUNET_PSYC_Channel *channel;
203 * Private key of home in case of a host.
205 struct GNUNET_CRYPTO_EddsaPublicKey key;
208 * Public key of place.
210 struct GNUNET_CRYPTO_EddsaPublicKey pub_key;
213 * Hash of @a pub_key.
215 struct GNUNET_HashCode pub_key_hash;
218 * Private key of ego.
220 struct GNUNET_CRYPTO_EcdsaPrivateKey ego_key;
225 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
228 * Hash of @a ego_pub_key.
230 struct GNUNET_HashCode ego_pub_hash;
233 * Slicer for processing incoming messages.
235 struct GNUNET_PSYC_Slicer *slicer;
238 * Last message ID received for the place.
239 * 0 if there is no such message.
241 uint64_t max_message_id;
244 * Offset where the file is currently being written.
246 uint64_t file_offset;
249 * Whether or not to save the file (#GNUNET_YES or #GNUNET_NO)
254 * Is this a host (#GNUNET_YES), or guest (#GNUNET_NO)?
259 * Is this place ready to receive messages from client?
260 * #GNUNET_YES or #GNUNET_NO
265 * Is the client disconnected?
266 * #GNUNET_YES or #GNUNET_NO
268 uint8_t is_disconnected;
273 * Client context for a host.
278 * Place struct common for Host and Guest
283 * Handle for the multicast origin.
285 struct GNUNET_PSYC_Master *master;
288 * Transmit handle for multicast.
290 struct GNUNET_PSYC_MasterTransmitHandle *tmit_handle;
293 * Incoming join requests.
294 * guest_key -> struct GNUNET_PSYC_JoinHandle *
296 struct GNUNET_CONTAINER_MultiHashMap *join_reqs;
299 * Messages being relayed.
301 struct GNUNET_CONTAINER_MultiHashMap *relay_msgs;
304 * @see enum GNUNET_PSYC_Policy
306 enum GNUNET_PSYC_Policy policy;
311 * Client context for a guest.
316 * Place struct common for Host and Guest.
321 * Handle for the PSYC slave.
323 struct GNUNET_PSYC_Slave *slave;
326 * Transmit handle for multicast.
328 struct GNUNET_PSYC_SlaveTransmitHandle *tmit_handle;
331 * Peer identity of the origin.
333 struct GNUNET_PeerIdentity origin;
336 * Number of items in @a relays.
338 uint32_t relay_count;
341 * Relays that multicast can use to connect.
343 struct GNUNET_PeerIdentity *relays;
346 * Join request to be transmitted to the master on join.
348 struct GNUNET_MessageHeader *join_req;
351 * Join decision received from PSYC.
353 struct GNUNET_PSYC_JoinDecisionMessage *join_dcsn;
356 * Join flags for the PSYC service.
358 enum GNUNET_PSYC_SlaveJoinFlags join_flags;
363 * Context for a client.
368 * Place where the client entered.
373 * Message queue for the message currently being transmitted
376 struct MessageTransmitQueue *tmit_msg;
379 * ID for application clients.
387 struct ClientListItem *clients_head;
388 struct ClientListItem *clients_tail;
393 struct GNUNET_CRYPTO_EcdsaPrivateKey key;
398 struct OperationClosure
400 struct GNUNET_SERVER_Client *client;
408 psyc_transmit_message (struct Place *plc);
412 * Clean up place data structures after a client disconnected.
414 * @param cls the `struct Place` to clean up
417 cleanup_place (void *cls);
420 static struct MessageTransmitQueue *
421 psyc_transmit_queue_message (struct Place *plc,
422 struct GNUNET_SERVER_Client *client,
425 uint16_t first_ptype, uint16_t last_ptype,
426 struct MessageTransmitQueue *tmit_msg);
430 place_entry_cleanup (void *cls,
431 const struct GNUNET_HashCode *key,
434 struct Place *plc = value;
442 * Task run during shutdown.
447 shutdown_task (void *cls)
449 GNUNET_CONTAINER_multihashmap_iterate (hosts, place_entry_cleanup, NULL);
450 GNUNET_CONTAINER_multihashmap_iterate (guests, place_entry_cleanup, NULL);
454 GNUNET_SERVER_notification_context_destroy (nc);
459 GNUNET_CORE_disconnect (core);
464 GNUNET_IDENTITY_disconnect (id);
467 if (NULL != namestore)
469 GNUNET_NAMESTORE_disconnect (namestore);
474 GNUNET_GNS_disconnect (gns);
479 GNUNET_STATISTICS_destroy (stats, GNUNET_YES);
486 * Clean up host data structures after a client disconnected.
489 cleanup_host (struct Host *hst)
491 struct Place *plc = &hst->plc;
493 if (NULL != hst->master)
494 GNUNET_PSYC_master_stop (hst->master, GNUNET_NO, NULL, NULL); // FIXME
495 GNUNET_CONTAINER_multihashmap_destroy (hst->join_reqs);
496 GNUNET_CONTAINER_multihashmap_destroy (hst->relay_msgs);
497 GNUNET_CONTAINER_multihashmap_remove (hosts, &plc->pub_key_hash, plc);
502 * Clean up guest data structures after a client disconnected.
505 cleanup_guest (struct Guest *gst)
507 struct Place *plc = &gst->plc;
508 struct GNUNET_CONTAINER_MultiHashMap *
509 plc_gst = GNUNET_CONTAINER_multihashmap_get (place_guests,
511 GNUNET_assert (NULL != plc_gst); // FIXME
512 GNUNET_CONTAINER_multihashmap_remove (plc_gst, &plc->ego_pub_hash, gst);
514 if (0 == GNUNET_CONTAINER_multihashmap_size (plc_gst))
516 GNUNET_CONTAINER_multihashmap_remove (place_guests, &plc->pub_key_hash,
518 GNUNET_CONTAINER_multihashmap_destroy (plc_gst);
520 GNUNET_CONTAINER_multihashmap_remove (guests, &plc->pub_key_hash, gst);
522 if (NULL != gst->join_req)
523 GNUNET_free (gst->join_req);
524 if (NULL != gst->relays)
525 GNUNET_free (gst->relays);
526 if (NULL != gst->slave)
527 GNUNET_PSYC_slave_part (gst->slave, GNUNET_NO, NULL, NULL); // FIXME
528 GNUNET_CONTAINER_multihashmap_remove (guests, &plc->pub_key_hash, plc);
533 * Clean up place data structures after a client disconnected.
535 * @param cls the `struct Place` to clean up
538 cleanup_place (void *cls)
540 struct Place *plc = cls;
542 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
543 "%p Cleaning up place %s\n",
544 plc, GNUNET_h2s (&plc->pub_key_hash));
546 (GNUNET_YES == plc->is_host)
547 ? cleanup_host ((struct Host *) plc)
548 : cleanup_guest ((struct Guest *) plc);
550 GNUNET_PSYC_slicer_destroy (plc->slicer);
556 * Called whenever a client is disconnected.
557 * Frees our resources associated with that client.
559 * @param cls Closure.
560 * @param client Identification of the client.
563 client_disconnect (void *cls, struct GNUNET_SERVER_Client *client)
569 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
572 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
573 "%p User context is NULL in client_disconnect()\n", ctx);
577 struct Place *plc = ctx->plc;
579 if (NULL != ctx->app_id)
580 GNUNET_free (ctx->app_id);
585 return; // application client, nothing to do
587 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
588 "%p Client (%s) disconnected from place %s\n",
589 plc, (GNUNET_YES == plc->is_host) ? "host" : "guest",
590 GNUNET_h2s (&plc->pub_key_hash));
592 struct ClientListItem *cli = plc->clients_head;
595 if (cli->client == client)
597 GNUNET_CONTAINER_DLL_remove (plc->clients_head, plc->clients_tail, cli);
607 * Send message to a client.
610 client_send_msg (struct GNUNET_SERVER_Client *client,
611 const struct GNUNET_MessageHeader *msg)
613 GNUNET_SERVER_notification_context_add (nc, client);
614 GNUNET_SERVER_notification_context_unicast (nc, client, msg, GNUNET_NO);
619 * Send message to all clients connected to a place.
622 place_send_msg (const struct Place *plc,
623 const struct GNUNET_MessageHeader *msg)
625 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
626 "%p Sending message to clients of place.\n", plc);
628 struct ClientListItem *cli = plc->clients_head;
631 client_send_msg (cli->client, msg);
638 * Send a result code back to the client.
641 * Client that should receive the result code.
645 * Operation ID in network byte order.
647 * Data payload or NULL.
652 client_send_result (struct GNUNET_SERVER_Client *client, uint64_t op_id,
653 int64_t result_code, const void *data, uint16_t data_size)
655 struct GNUNET_OperationResultMessage *res;
657 res = GNUNET_malloc (sizeof (*res) + data_size);
658 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE);
659 res->header.size = htons (sizeof (*res) + data_size);
660 res->result_code = GNUNET_htonll (result_code);
663 memcpy (&res[1], data, data_size);
665 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
666 "%p Sending result to client for operation #%" PRIu64 ": "
667 "%" PRId64 " (size: %u)\n",
668 client, GNUNET_ntohll (op_id), result_code, data_size);
670 client_send_msg (client, &res->header);
676 client_send_host_enter_ack (struct GNUNET_SERVER_Client *client,
677 struct Host *hst, uint32_t result)
679 struct Place *plc = &hst->plc;
681 struct HostEnterAck hack;
682 hack.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER_ACK);
683 hack.header.size = htons (sizeof (hack));
684 hack.result_code = htonl (result);
685 hack.max_message_id = GNUNET_htonll (plc->max_message_id);
686 hack.place_pub_key = plc->pub_key;
689 client_send_msg (client, &hack.header);
691 place_send_msg (plc, &hack.header);
696 * Called after a PSYC master is started.
699 psyc_master_started (void *cls, int result, uint64_t max_message_id)
701 struct Host *hst = cls;
702 struct Place *plc = &hst->plc;
703 plc->max_message_id = max_message_id;
704 plc->is_ready = GNUNET_YES;
706 client_send_host_enter_ack (NULL, hst, result);
711 * Called when a PSYC master receives a join request.
714 psyc_recv_join_request (void *cls,
715 const struct GNUNET_PSYC_JoinRequestMessage *req,
716 const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
717 const struct GNUNET_PSYC_Message *join_msg,
718 struct GNUNET_PSYC_JoinHandle *jh)
720 struct Host *hst = cls;
721 struct GNUNET_HashCode slave_key_hash;
722 GNUNET_CRYPTO_hash (slave_key, sizeof (*slave_key), &slave_key_hash);
723 GNUNET_CONTAINER_multihashmap_put (hst->join_reqs, &slave_key_hash, jh,
724 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
725 place_send_msg (&hst->plc, &req->header);
730 * Called after a PSYC slave is connected.
733 psyc_slave_connected (void *cls, int result, uint64_t max_message_id)
735 struct Guest *gst = cls;
736 struct Place *plc = &gst->plc;
737 plc->max_message_id = max_message_id;
738 plc->is_ready = GNUNET_YES;
740 struct GNUNET_PSYC_CountersResultMessage res;
741 res.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_ACK);
742 res.header.size = htons (sizeof (res));
743 res.result_code = htonl (result);
744 res.max_message_id = GNUNET_htonll (plc->max_message_id);
746 place_send_msg (plc, &res.header);
751 * Called when a PSYC slave receives a join decision.
754 psyc_recv_join_dcsn (void *cls,
755 const struct GNUNET_PSYC_JoinDecisionMessage *dcsn,
757 const struct GNUNET_PSYC_Message *join_msg)
759 struct Guest *gst = cls;
760 place_send_msg (&gst->plc, &dcsn->header);
765 * Called when a PSYC master or slave receives a message.
768 psyc_recv_message (void *cls,
769 const struct GNUNET_PSYC_MessageHeader *msg)
771 struct Place *plc = cls;
773 char *str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&msg->slave_pub_key);
774 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
775 "%p Received PSYC message of size %u from %s.\n",
776 plc, ntohs (msg->header.size), str);
779 GNUNET_PSYC_slicer_message (plc->slicer, msg);
781 place_send_msg (plc, &msg->header);
786 * Relay a message part received from a guest to the the place.
793 * Nym the message is received from.
796 host_relay_message_part (struct Host *hst,
797 const struct GNUNET_MessageHeader *pmsg,
798 const struct GNUNET_CRYPTO_EcdsaPublicKey *nym_pub_key)
800 /* separate queue per nym */
801 struct GNUNET_HashCode nym_pub_hash;
802 GNUNET_CRYPTO_hash (nym_pub_key, sizeof (*nym_pub_key), &nym_pub_hash);
804 struct MessageTransmitQueue *
805 tmit_msg = GNUNET_CONTAINER_multihashmap_get (hst->relay_msgs, &nym_pub_hash);
807 uint16_t ptype = ntohs (pmsg->type);
809 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD == ptype)
811 /* FIXME: last message was unfinished, cancel & remove from queue */
814 tmit_msg = psyc_transmit_queue_message (&hst->plc, NULL, ntohs (pmsg->size),
815 pmsg, ptype, ptype, tmit_msg);
819 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD:
820 GNUNET_CONTAINER_multihashmap_put (hst->relay_msgs, &nym_pub_hash, tmit_msg,
821 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
823 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
824 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
825 GNUNET_CONTAINER_multihashmap_remove (hst->relay_msgs, &nym_pub_hash, tmit_msg);
832 * Received a method to be relayed from a guest.
835 place_recv_relay_method (void *cls,
836 const struct GNUNET_PSYC_MessageHeader *msg,
837 const struct GNUNET_PSYC_MessageMethod *meth,
839 const char *method_name)
841 struct Place *plc = cls;
843 if (GNUNET_PSYC_MESSAGE_REQUEST & ntohs (msg->flags)
844 && GNUNET_YES == plc->is_host)
846 struct Host *hst = cls;
847 host_relay_message_part (hst, &meth->header, &msg->slave_pub_key);
853 * Received a modifier to be relayed from a guest.
856 place_recv_relay_modifier (void *cls,
857 const struct GNUNET_PSYC_MessageHeader *msg,
858 const struct GNUNET_MessageHeader *pmsg,
860 enum GNUNET_PSYC_Operator oper,
864 uint16_t full_value_size)
866 struct Place *plc = cls;
868 if (GNUNET_PSYC_MESSAGE_REQUEST & ntohs (msg->flags)
869 && GNUNET_YES == plc->is_host)
871 struct Host *hst = cls;
872 host_relay_message_part (hst, pmsg, &msg->slave_pub_key);
877 * Received a data fragment to be relayed from a guest.
880 place_recv_relay_data (void *cls,
881 const struct GNUNET_PSYC_MessageHeader *msg,
882 const struct GNUNET_MessageHeader *pmsg,
887 struct Place *plc = cls;
889 if (GNUNET_PSYC_MESSAGE_REQUEST & ntohs (msg->flags)
890 && GNUNET_YES == plc->is_host)
892 struct Host *hst = cls;
893 host_relay_message_part (hst, pmsg, &msg->slave_pub_key);
899 * Received end of message to be relayed from a guest.
902 place_recv_relay_eom (void *cls,
903 const struct GNUNET_PSYC_MessageHeader *msg,
904 const struct GNUNET_MessageHeader *pmsg,
906 uint8_t is_cancelled)
908 struct Place *plc = cls;
910 if (GNUNET_PSYC_MESSAGE_REQUEST & ntohs (msg->flags)
911 && GNUNET_YES == plc->is_host)
913 struct Host *hst = cls;
914 host_relay_message_part (hst, pmsg, &msg->slave_pub_key);
920 * Received a method to be saved to disk.
922 * Create a new file for writing the data part of the message into,
923 * if the file does not yet exist.
926 place_recv_save_method (void *cls,
927 const struct GNUNET_PSYC_MessageHeader *msg,
928 const struct GNUNET_PSYC_MessageMethod *meth,
930 const char *method_name)
932 struct Place *plc = cls;
933 plc->file_offset = 0;
934 plc->file_save = GNUNET_NO;
936 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&plc->pub_key);
937 char *filename = NULL;
938 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%" PRIu64 ".part",
939 dir_social, DIR_SEPARATOR,
940 "files", DIR_SEPARATOR,
941 place_pub_str, DIR_SEPARATOR,
942 GNUNET_ntohll (msg->message_id));
943 GNUNET_free (place_pub_str);
945 /* save if does not already exist */
946 if (GNUNET_YES != GNUNET_DISK_file_test (filename))
948 if (0 == GNUNET_DISK_fn_write (filename, NULL, 0,
949 GNUNET_DISK_PERM_USER_READ
950 | GNUNET_DISK_PERM_USER_WRITE))
952 plc->file_save = GNUNET_YES;
959 GNUNET_free (filename);
964 * Received a data fragment to be saved to disk.
966 * Append data fragment to the file.
969 place_recv_save_data (void *cls,
970 const struct GNUNET_PSYC_MessageHeader *msg,
971 const struct GNUNET_MessageHeader *pmsg,
976 struct Place *plc = cls;
977 if (GNUNET_YES != plc->file_save)
980 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&plc->pub_key);
981 char *filename = NULL;
982 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%" PRIu64 ".part",
983 dir_social, DIR_SEPARATOR,
984 "files", DIR_SEPARATOR,
985 place_pub_str, DIR_SEPARATOR,
986 GNUNET_ntohll (msg->message_id));
987 GNUNET_free (place_pub_str);
988 GNUNET_DISK_directory_create_for_file (filename);
989 struct GNUNET_DISK_FileHandle *
990 fh = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_WRITE,
991 GNUNET_DISK_PERM_NONE);
992 GNUNET_free (filename);
996 GNUNET_DISK_file_seek (fh, plc->file_offset, GNUNET_DISK_SEEK_SET);
997 GNUNET_DISK_file_write (fh, data, data_size);
998 GNUNET_DISK_file_close (fh);
1005 plc->file_offset += data_size;
1010 * Received end of message to be saved to disk.
1012 * Remove .part ending from the filename.
1015 place_recv_save_eom (void *cls,
1016 const struct GNUNET_PSYC_MessageHeader *msg,
1017 const struct GNUNET_MessageHeader *pmsg,
1018 uint64_t message_id,
1019 uint8_t is_cancelled)
1021 struct Place *plc = cls;
1022 if (GNUNET_YES != plc->file_save)
1025 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&plc->pub_key);
1027 GNUNET_asprintf (&fn, "%s%c%s%c%s%c%" PRIu64,
1028 dir_social, DIR_SEPARATOR,
1029 "files", DIR_SEPARATOR,
1030 place_pub_str, DIR_SEPARATOR,
1031 GNUNET_ntohll (msg->message_id));
1032 GNUNET_free (place_pub_str);
1033 char *fn_part = NULL;
1034 GNUNET_asprintf (&fn_part, "%s.part", fn);
1036 rename (fn_part, fn);
1039 GNUNET_free (fn_part);
1044 * Initialize place data structure.
1047 place_init (struct Place *plc)
1049 plc->slicer = GNUNET_PSYC_slicer_create ();
1054 * Add a place to the @e places hash map.
1059 * @return #GNUNET_OK if the place was added
1060 * #GNUNET_NO if the place already exists in the hash map
1061 * #GNUNET_SYSERR on error
1064 place_add (const struct PlaceEnterRequest *ereq)
1066 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1067 "Adding place to hashmap:\n");
1069 struct EgoPlacePublicKey ego_place_pub_key = {
1070 .ego_pub_key = ereq->ego_pub_key,
1071 .place_pub_key = ereq->place_pub_key,
1073 struct GNUNET_HashCode ego_place_pub_hash;
1074 GNUNET_CRYPTO_hash (&ego_place_pub_key, sizeof (ego_place_pub_key), &ego_place_pub_hash);
1076 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1077 " ego_place_pub_hash = %s\n", GNUNET_h2s (&ego_place_pub_hash));
1079 struct GNUNET_MessageHeader *
1080 place_msg = GNUNET_CONTAINER_multihashmap_get (places, &ego_place_pub_hash);
1081 if (NULL != place_msg)
1084 place_msg = GNUNET_copy_message (&ereq->header);
1085 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (places, &ego_place_pub_hash, place_msg,
1086 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1089 GNUNET_free (place_msg);
1090 return GNUNET_SYSERR;
1097 * Add a place to the @e app_places hash map.
1104 * @return #GNUNET_OK if the place was added
1105 * #GNUNET_NO if the place already exists in the hash map
1106 * #GNUNET_SYSERR on error
1109 app_place_add (const char *app_id,
1110 const struct PlaceEnterRequest *ereq)
1112 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1113 "Adding app place to hashmap:\n");
1114 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1115 " app_id = %s\n", app_id);
1117 struct GNUNET_HashCode app_id_hash;
1118 GNUNET_CRYPTO_hash (app_id, strlen (app_id) + 1, &app_id_hash);
1120 struct EgoPlacePublicKey ego_place_pub_key = {
1121 .ego_pub_key = ereq->ego_pub_key,
1122 .place_pub_key = ereq->place_pub_key,
1124 struct GNUNET_HashCode ego_place_pub_hash;
1125 GNUNET_CRYPTO_hash (&ego_place_pub_key, sizeof (ego_place_pub_key), &ego_place_pub_hash);
1127 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1128 " ego_place_pub_hash = %s\n", GNUNET_h2s (&ego_place_pub_hash));
1130 struct GNUNET_CONTAINER_MultiHashMap *
1131 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
1132 if (NULL == app_places)
1134 app_places = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1135 GNUNET_CONTAINER_multihashmap_put (apps_places, &app_id_hash, app_places,
1136 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1139 if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (app_places, &ego_place_pub_hash))
1142 if (GNUNET_SYSERR == place_add (ereq))
1143 return GNUNET_SYSERR;
1145 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (app_places, &ego_place_pub_hash, NULL,
1146 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1149 return GNUNET_SYSERR;
1152 struct GNUNET_HashCode place_pub_hash;
1153 GNUNET_CRYPTO_hash (&ereq->place_pub_key, sizeof (ereq->place_pub_key), &place_pub_hash);
1155 struct GNUNET_CONTAINER_MultiHashMap *
1156 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &place_pub_hash);
1157 if (NULL == place_apps)
1159 place_apps = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1160 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (places_apps, &place_pub_hash, place_apps,
1161 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1167 size_t app_id_size = strlen (app_id) + 1;
1168 void *app_id_value = GNUNET_malloc (app_id_size);
1169 memcpy (app_id_value, app_id, app_id_size);
1171 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (place_apps, &app_id_hash, app_id_value,
1172 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY))
1182 * Save place entry message to disk.
1190 app_place_save (const char *app_id,
1191 const struct PlaceEnterRequest *ereq)
1193 app_place_add (app_id, ereq);
1195 if (NULL == dir_places)
1196 return GNUNET_SYSERR;
1198 char *ego_pub_str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&ereq->ego_pub_key);
1199 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&ereq->place_pub_key);
1200 char *filename = NULL;
1201 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s",
1202 dir_social, DIR_SEPARATOR,
1203 "places", DIR_SEPARATOR,
1204 ego_pub_str, DIR_SEPARATOR,
1206 int ret = GNUNET_DISK_directory_create_for_file (filename);
1207 if (GNUNET_OK != ret
1208 || 0 > GNUNET_DISK_fn_write (filename, ereq, ntohs (ereq->header.size),
1209 GNUNET_DISK_PERM_USER_READ
1210 | GNUNET_DISK_PERM_USER_WRITE))
1213 ret = GNUNET_SYSERR;
1215 GNUNET_free (filename);
1217 if (ret == GNUNET_OK)
1219 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s%c" "%s",
1220 dir_social, DIR_SEPARATOR,
1221 "apps", DIR_SEPARATOR,
1222 app_id, DIR_SEPARATOR,
1223 ego_pub_str, DIR_SEPARATOR,
1225 ret = GNUNET_DISK_directory_create_for_file (filename);
1226 if (GNUNET_OK != ret
1227 || 0 > GNUNET_DISK_fn_write (filename, "", 0,
1228 GNUNET_DISK_PERM_USER_READ
1229 | GNUNET_DISK_PERM_USER_WRITE))
1232 ret = GNUNET_SYSERR;
1234 GNUNET_free (filename);
1236 GNUNET_free (ego_pub_str);
1237 GNUNET_free (place_pub_str);
1243 app_place_remove (const char *app_id,
1244 const struct GNUNET_CRYPTO_EcdsaPublicKey *ego_pub_key,
1245 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key)
1247 struct GNUNET_HashCode ego_pub_hash;
1248 struct GNUNET_HashCode place_pub_hash;
1249 GNUNET_CRYPTO_hash (ego_pub_key, sizeof (*ego_pub_key), &ego_pub_hash);
1250 GNUNET_CRYPTO_hash (place_pub_key, sizeof (*place_pub_key), &place_pub_hash);
1252 char *ego_pub_str = GNUNET_CRYPTO_ecdsa_public_key_to_string (ego_pub_key);
1253 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (place_pub_key);
1254 char *app_place_filename = NULL;
1255 GNUNET_asprintf (&app_place_filename,
1256 "%s%c" "%s%c" "%s%c" "%s%c" "%s",
1257 dir_social, DIR_SEPARATOR,
1258 "apps", DIR_SEPARATOR,
1259 app_id, DIR_SEPARATOR,
1260 ego_pub_str, DIR_SEPARATOR,
1262 GNUNET_free (ego_pub_str);
1263 GNUNET_free (place_pub_str);
1265 struct GNUNET_HashCode app_id_hash;
1266 GNUNET_CRYPTO_hash (app_id, strlen (app_id) + 1, &app_id_hash);
1268 struct GNUNET_CONTAINER_MultiHashMap *
1269 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
1271 if (NULL != app_places)
1272 GNUNET_CONTAINER_multihashmap_remove (app_places, &place_pub_hash, NULL);
1274 struct GNUNET_CONTAINER_MultiHashMap *
1275 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &place_pub_hash);
1276 if (NULL != place_apps)
1278 void *app_id_value = GNUNET_CONTAINER_multihashmap_get (place_apps, &app_id_hash);
1279 if (NULL != app_id_value)
1281 GNUNET_CONTAINER_multihashmap_remove (place_apps, &app_id_hash, app_id_value);
1282 GNUNET_free (app_id_value);
1286 int ret = GNUNET_OK;
1288 if (0 != unlink (app_place_filename))
1291 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1292 "Error removing app place file: %s: %s (%d)\n",
1293 app_place_filename, strerror (errno), errno);
1294 ret = GNUNET_SYSERR;
1296 GNUNET_free (app_place_filename);
1303 * Enter place as host.
1307 * @param[out] ret_hst
1308 * Returned Host struct.
1310 * @return #GNUNET_YES if the host entered the place just now,
1311 * #GNUNET_NO if the place is already entered,
1312 * #GNUNET_SYSERR if place_pub_key was set
1313 * but its private key was not found
1316 host_enter (const struct HostEnterRequest *hreq, struct Host **ret_hst)
1318 int ret = GNUNET_NO;
1319 struct GNUNET_HashCode place_pub_hash;
1320 GNUNET_CRYPTO_hash (&hreq->place_pub_key, sizeof (hreq->place_pub_key),
1322 struct Host *hst = GNUNET_CONTAINER_multihashmap_get (hosts, &place_pub_hash);
1326 hst = GNUNET_new (struct Host);
1327 hst->policy = hreq->policy;
1328 hst->join_reqs = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1329 hst->relay_msgs = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1331 struct Place *plc = &hst->plc;
1333 plc->is_host = GNUNET_YES;
1334 plc->pub_key = hreq->place_pub_key;
1335 plc->pub_key_hash = place_pub_hash;
1337 GNUNET_CONTAINER_multihashmap_put (hosts, &plc->pub_key_hash, plc,
1338 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1339 hst->master = GNUNET_PSYC_master_start (cfg, &hreq->place_key, hst->policy,
1340 &psyc_master_started,
1341 &psyc_recv_join_request,
1342 &psyc_recv_message, NULL, hst);
1343 plc->channel = GNUNET_PSYC_master_get_channel (hst->master);
1347 if (NULL != ret_hst)
1353 const struct MsgProcRequest *
1354 msg_proc_parse (const struct GNUNET_MessageHeader *msg,
1356 const char **method_prefix,
1357 struct GNUNET_HashCode *method_hash)
1359 const struct MsgProcRequest *mpreq = (const struct MsgProcRequest *) msg;
1360 uint8_t method_size = ntohs (mpreq->header.size) - sizeof (*mpreq);
1361 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &mpreq[1],
1362 method_size, 1, method_prefix);
1364 if (0 == offset || offset != method_size || *method_prefix == NULL)
1366 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1367 "offset = %u, method_size = %u, method_name = %s\n",
1368 offset, method_size, *method_prefix);
1372 GNUNET_CRYPTO_hash (*method_prefix, method_size, method_hash);
1373 *flags = ntohl (mpreq->flags);
1379 * Handle a client setting message proccesing flags for a method prefix.
1382 client_recv_msg_proc_set (void *cls, struct GNUNET_SERVER_Client *client,
1383 const struct GNUNET_MessageHeader *msg)
1386 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
1387 GNUNET_assert (NULL != ctx);
1388 struct Place *plc = ctx->plc;
1390 const char *method_prefix = NULL;
1392 struct GNUNET_HashCode method_hash;
1393 const struct MsgProcRequest *
1394 mpreq = msg_proc_parse (msg, &flags, &method_prefix, &method_hash);
1396 if (NULL == mpreq) {
1398 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1402 GNUNET_PSYC_slicer_method_remove (plc->slicer, method_prefix,
1403 place_recv_relay_method,
1404 place_recv_relay_modifier,
1405 place_recv_relay_data,
1406 place_recv_relay_eom);
1407 GNUNET_PSYC_slicer_method_remove (plc->slicer, method_prefix,
1408 place_recv_save_method,
1410 place_recv_save_data,
1411 place_recv_save_eom);
1413 if (flags & GNUNET_SOCIAL_MSG_PROC_RELAY)
1415 GNUNET_PSYC_slicer_method_add (plc->slicer, method_prefix, NULL,
1416 place_recv_relay_method,
1417 place_recv_relay_modifier,
1418 place_recv_relay_data,
1419 place_recv_relay_eom,
1422 if (flags & GNUNET_SOCIAL_MSG_PROC_SAVE)
1424 GNUNET_PSYC_slicer_method_add (plc->slicer, method_prefix, NULL,
1425 place_recv_save_method,
1427 place_recv_save_data,
1428 place_recv_save_eom,
1432 /** @todo Save flags to be able to resume relaying/saving after restart */
1434 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1439 * Handle a connecting client requesting to clear all relay rules.
1442 client_recv_msg_proc_clear (void *cls, struct GNUNET_SERVER_Client *client,
1443 const struct GNUNET_MessageHeader *msg)
1446 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
1447 GNUNET_assert (NULL != ctx);
1448 struct Place *plc = ctx->plc;
1449 if (GNUNET_YES != plc->is_host) {
1451 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1454 GNUNET_PSYC_slicer_clear (plc->slicer);
1456 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1461 * Handle a connecting client entering a place as host.
1464 client_recv_host_enter (void *cls, struct GNUNET_SERVER_Client *client,
1465 const struct GNUNET_MessageHeader *msg)
1467 struct HostEnterRequest *hreq
1468 = (struct HostEnterRequest *) GNUNET_copy_message (msg);
1470 uint8_t app_id_size = ntohs (hreq->header.size) - sizeof (*hreq);
1471 const char *app_id = NULL;
1472 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &hreq[1],
1473 app_id_size, 1, &app_id);
1474 if (0 == offset || offset != app_id_size || app_id == NULL)
1476 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1477 "offset = %u, app_id_size = %u, app_id = %s\n",
1478 offset, app_id_size, app_id);
1480 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1484 struct Host *hst = NULL;
1485 struct Place *plc = NULL;
1486 int ret = GNUNET_OK;
1488 struct GNUNET_CRYPTO_EddsaPublicKey empty_pub_key;
1489 memset (&empty_pub_key, 0, sizeof (empty_pub_key));
1491 if (0 == memcmp (&hreq->place_pub_key, &empty_pub_key, sizeof (empty_pub_key)))
1492 { // no public key set: create new private key & save the place
1493 struct GNUNET_CRYPTO_EddsaPrivateKey *
1494 place_key = GNUNET_CRYPTO_eddsa_key_create ();
1495 hreq->place_key = *place_key;
1496 GNUNET_CRYPTO_eddsa_key_get_public (place_key, &hreq->place_pub_key);
1497 GNUNET_CRYPTO_eddsa_key_clear (place_key);
1498 GNUNET_free (place_key);
1500 app_place_save (app_id, (const struct PlaceEnterRequest *) hreq);
1503 switch (host_enter (hreq, &hst))
1512 client_send_host_enter_ack (client, hst, GNUNET_OK);
1516 ret = GNUNET_SYSERR;
1519 if (ret != GNUNET_SYSERR)
1522 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1523 "%p Client connected as host to place %s.\n",
1524 hst, GNUNET_h2s (&plc->pub_key_hash));
1526 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
1527 cli->client = client;
1528 GNUNET_CONTAINER_DLL_insert (plc->clients_head, plc->clients_tail, cli);
1530 struct Client *ctx = GNUNET_new (struct Client);
1532 GNUNET_SERVER_client_set_user_context (client, ctx);
1535 GNUNET_CRYPTO_eddsa_key_clear (&hreq->place_key);
1537 GNUNET_SERVER_receive_done (client, ret);
1542 * Enter place as guest.
1546 * @param[out] ret_gst
1547 * Returned Guest struct.
1549 * @return #GNUNET_YES if the guest entered the place just now,
1550 * #GNUNET_NO if the place is already entered,
1551 * #GNUNET_SYSERR on error.
1554 guest_enter (const struct GuestEnterRequest *greq, struct Guest **ret_gst)
1556 int ret = GNUNET_NO;
1557 uint16_t greq_size = ntohs (greq->header.size);
1559 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key = greq->ego_pub_key;
1560 struct GNUNET_HashCode ego_pub_hash;
1561 GNUNET_CRYPTO_hash (&ego_pub_key, sizeof (ego_pub_key), &ego_pub_hash);
1562 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
1565 return GNUNET_SYSERR;
1567 struct GNUNET_HashCode place_pub_hash;
1568 GNUNET_CRYPTO_hash (&greq->place_pub_key, sizeof (greq->place_pub_key),
1571 struct GNUNET_CONTAINER_MultiHashMap *
1572 plc_gst = GNUNET_CONTAINER_multihashmap_get (place_guests, &place_pub_hash);
1573 struct Guest *gst = NULL;
1575 if (NULL != plc_gst)
1576 gst = GNUNET_CONTAINER_multihashmap_get (plc_gst, &ego_pub_hash);
1578 if (NULL == gst || NULL == gst->slave)
1580 gst = GNUNET_new (struct Guest);
1581 gst->origin = greq->origin;
1582 gst->relay_count = ntohl (greq->relay_count);
1585 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1586 const char *app_id = (const char *) &greq[1];
1587 const char *p = app_id;
1589 len = strnlen (app_id, remaining);
1590 if (len == remaining)
1593 return GNUNET_SYSERR;
1596 remaining -= len + 1;
1598 const struct GNUNET_PeerIdentity *relays = NULL;
1599 uint16_t relay_size = gst->relay_count * sizeof (*relays);
1600 if (remaining < relay_size)
1604 return GNUNET_SYSERR;
1607 relays = (const struct GNUNET_PeerIdentity *) p;
1609 remaining -= relay_size;
1611 struct GNUNET_PSYC_Message *join_msg = NULL;
1612 uint16_t join_msg_size = 0;
1614 if (sizeof (struct GNUNET_MessageHeader) <= remaining)
1616 join_msg = (struct GNUNET_PSYC_Message *) p;
1617 join_msg_size = ntohs (join_msg->header.size);
1619 remaining -= join_msg_size;
1623 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1624 "%zu + %u + %u != %u\n",
1625 sizeof (*greq), relay_size, join_msg_size, greq_size);
1628 return GNUNET_SYSERR;
1632 gst->relays = GNUNET_malloc (relay_size);
1633 memcpy (gst->relays, relays, relay_size);
1636 gst->join_flags = ntohl (greq->flags);
1638 struct Place *plc = &gst->plc;
1640 plc->is_host = GNUNET_NO;
1641 plc->pub_key = greq->place_pub_key;
1642 plc->pub_key_hash = place_pub_hash;
1643 plc->ego_pub_key = ego_pub_key;
1644 plc->ego_pub_hash = ego_pub_hash;
1645 plc->ego_key = ego->key;
1647 if (NULL == plc_gst)
1649 plc_gst = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
1650 (void) GNUNET_CONTAINER_multihashmap_put (place_guests, &plc->pub_key_hash, plc_gst,
1651 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1653 (void) GNUNET_CONTAINER_multihashmap_put (plc_gst, &plc->ego_pub_hash, gst,
1654 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1655 (void) GNUNET_CONTAINER_multihashmap_put (guests, &plc->pub_key_hash, gst,
1656 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1658 = GNUNET_PSYC_slave_join (cfg, &plc->pub_key, &plc->ego_key,
1659 gst->join_flags, &gst->origin,
1660 gst->relay_count, gst->relays,
1661 &psyc_recv_message, NULL,
1662 &psyc_slave_connected,
1663 &psyc_recv_join_dcsn,
1665 plc->channel = GNUNET_PSYC_slave_get_channel (gst->slave);
1669 if (NULL != ret_gst)
1676 * Handle a connecting client entering a place as guest.
1679 client_recv_guest_enter (void *cls, struct GNUNET_SERVER_Client *client,
1680 const struct GNUNET_MessageHeader *msg)
1682 const struct GuestEnterRequest *
1683 greq = (const struct GuestEnterRequest *) msg;
1685 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1686 const char *app_id = NULL;
1687 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &greq[1],
1688 remaining, 1, &app_id);
1692 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1696 struct Guest *gst = NULL;
1697 struct Place *plc = NULL;
1699 switch (guest_enter (greq, &gst))
1703 app_place_save (app_id, (const struct PlaceEnterRequest *) greq);
1710 struct GNUNET_PSYC_CountersResultMessage res;
1711 res.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_ACK);
1712 res.header.size = htons (sizeof (res));
1713 res.result_code = htonl (GNUNET_OK);
1714 res.max_message_id = GNUNET_htonll (plc->max_message_id);
1716 client_send_msg (client, &res.header);
1717 if (NULL != gst->join_dcsn)
1718 client_send_msg (client, &gst->join_dcsn->header);
1724 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1728 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1729 "%p Client connected as guest to place %s.\n",
1730 gst, GNUNET_h2s (&plc->pub_key_hash));
1732 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
1733 cli->client = client;
1734 GNUNET_CONTAINER_DLL_insert (plc->clients_head, plc->clients_tail, cli);
1736 struct Client *ctx = GNUNET_new (struct Client);
1738 GNUNET_SERVER_client_set_user_context (client, ctx);
1739 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1743 struct GuestEnterByNameClosure
1745 struct GNUNET_SERVER_Client *client;
1748 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
1749 struct GNUNET_MessageHeader *join_msg;
1754 * Result of a GNS name lookup for entering a place.
1756 * @see GNUNET_SOCIAL_guest_enter_by_name
1759 gns_result_guest_enter (void *cls, uint32_t rd_count,
1760 const struct GNUNET_GNSRECORD_Data *rd)
1762 struct GuestEnterByNameClosure *gcls = cls;
1763 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1764 "%p GNS result: %u records.\n", gcls->client, rd_count);
1766 const struct GNUNET_GNSRECORD_PlaceData *
1767 rec = (const struct GNUNET_GNSRECORD_PlaceData *) rd->data;
1769 if (0 == rd_count || rd->data_size < sizeof (*rec))
1772 GNUNET_SERVER_receive_done (gcls->client, GNUNET_SYSERR);
1776 uint16_t relay_count = ntohl (rec->relay_count);
1777 struct GNUNET_PeerIdentity *relays = NULL;
1779 if (0 < relay_count)
1781 if (rd->data_size == sizeof (*rec) + relay_count * sizeof (struct GNUNET_PeerIdentity))
1783 relays = (struct GNUNET_PeerIdentity *) &rec[1];
1788 GNUNET_break_op (0);
1792 uint16_t app_id_size = strlen (gcls->app_id) + 1;
1793 uint16_t relay_size = relay_count * sizeof (*relays);
1794 uint16_t join_msg_size = 0;
1795 if (NULL != gcls->join_msg)
1796 join_msg_size = ntohs (gcls->join_msg->size);
1797 uint16_t greq_size = sizeof (struct GuestEnterRequest)
1798 + app_id_size + relay_size + join_msg_size;
1799 struct GuestEnterRequest *greq = GNUNET_malloc (greq_size);
1800 greq->header.size = htons (greq_size);
1801 greq->header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER);
1802 greq->ego_pub_key = gcls->ego_pub_key;
1803 greq->place_pub_key = rec->place_pub_key;
1804 greq->origin = rec->origin;
1805 greq->relay_count = rec->relay_count;
1808 memcpy (p, gcls->app_id, app_id_size);
1810 memcpy (p, relays, relay_size);
1812 memcpy (p, gcls->join_msg, join_msg_size);
1814 client_recv_guest_enter (NULL, gcls->client, &greq->header);
1816 GNUNET_free (gcls->app_id);
1817 if (NULL != gcls->password)
1818 GNUNET_free (gcls->password);
1819 if (NULL != gcls->join_msg)
1820 GNUNET_free (gcls->join_msg);
1827 * Handle a connecting client entering a place as guest using a GNS address.
1829 * Look up GNS address and generate a GuestEnterRequest from that.
1832 client_recv_guest_enter_by_name (void *cls, struct GNUNET_SERVER_Client *client,
1833 const struct GNUNET_MessageHeader *msg)
1835 const struct GuestEnterByNameRequest *
1836 greq = (const struct GuestEnterByNameRequest *) msg;
1838 struct GuestEnterByNameClosure *gcls = GNUNET_malloc (sizeof (*gcls));
1839 gcls->client = client;
1840 gcls->ego_pub_key = greq->ego_pub_key;
1842 const char *p = (const char *) &greq[1];
1843 const char *app_id = NULL, *password = NULL, *gns_name = NULL;
1844 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1845 uint16_t offset = GNUNET_STRINGS_buffer_tokenize (p, remaining, 3,
1850 remaining -= offset;
1852 if (0 != offset && sizeof (*gcls->join_msg) <= remaining)
1854 gcls->join_msg = GNUNET_copy_message ((struct GNUNET_MessageHeader *) p);
1855 remaining -= ntohs (gcls->join_msg->size);
1858 if (0 == offset || 0 != remaining)
1860 if (NULL != gcls->join_msg)
1861 GNUNET_free (gcls->join_msg);
1864 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1868 uint16_t app_id_size = strlen (app_id) + 1;
1869 gcls->app_id = GNUNET_malloc (app_id_size);
1870 memcpy (gcls->app_id, app_id, app_id_size);
1872 uint16_t password_size = strlen (password);
1873 if (0 < password_size++)
1875 gcls->password = GNUNET_malloc (password_size);
1876 memcpy (gcls->password, password, password_size);
1879 GNUNET_GNS_lookup (gns, gns_name, &greq->ego_pub_key,
1880 GNUNET_GNSRECORD_TYPE_PLACE, GNUNET_GNS_LO_DEFAULT,
1881 NULL, gns_result_guest_enter, gcls);
1886 app_notify_place (struct GNUNET_MessageHeader *msg,
1887 struct GNUNET_SERVER_Client *client)
1889 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1890 "%p Sending place notification of type %u to client.\n",
1891 client, ntohs (msg->type));
1893 uint16_t msg_size = ntohs (msg->size);
1894 struct AppPlaceMessage amsg;
1895 amsg.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE);
1896 amsg.header.size = htons (sizeof (amsg));
1897 // FIXME: also notify about not entered places
1898 amsg.place_state = GNUNET_SOCIAL_PLACE_STATE_ENTERED;
1900 switch (ntohs (msg->type))
1902 case GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER:
1903 if (msg_size < sizeof (struct HostEnterRequest))
1905 struct HostEnterRequest *hreq = (struct HostEnterRequest *) msg;
1906 amsg.is_host = GNUNET_YES;
1907 amsg.ego_pub_key = hreq->ego_pub_key;
1908 amsg.place_pub_key = hreq->place_pub_key;
1911 case GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER:
1912 if (msg_size < sizeof (struct GuestEnterRequest))
1914 struct GuestEnterRequest *greq = (struct GuestEnterRequest *) msg;
1915 amsg.is_host = GNUNET_NO;
1916 amsg.ego_pub_key = greq->ego_pub_key;
1917 amsg.place_pub_key = greq->place_pub_key;
1924 client_send_msg (client, &amsg.header);
1929 app_notify_place_end (struct GNUNET_SERVER_Client *client)
1931 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1932 "%p Sending end of place list notification to client\n",
1935 struct GNUNET_MessageHeader msg;
1936 msg.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE_END);
1937 msg.size = htons (sizeof (msg));
1939 client_send_msg (client, &msg);
1944 app_notify_ego (struct Ego *ego, struct GNUNET_SERVER_Client *client)
1946 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1947 "%p Sending ego notification to client: %s\n",
1950 size_t name_size = strlen (ego->name) + 1;
1951 struct AppEgoMessage *emsg = GNUNET_malloc (sizeof (*emsg) + name_size);
1952 emsg->header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO);
1953 emsg->header.size = htons (sizeof (*emsg) + name_size);
1955 GNUNET_CRYPTO_ecdsa_key_get_public (&ego->key, &emsg->ego_pub_key);
1956 memcpy (&emsg[1], ego->name, name_size);
1958 client_send_msg (client, &emsg->header);
1964 app_notify_ego_end (struct GNUNET_SERVER_Client *client)
1966 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1967 "%p Sending end of ego list notification to client\n",
1970 struct GNUNET_MessageHeader msg;
1971 msg.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO_END);
1972 msg.size = htons (sizeof (msg));
1974 client_send_msg (client, &msg);
1979 app_place_entry_notify (void *cls, const struct GNUNET_HashCode *key, void *value)
1981 struct GNUNET_MessageHeader *
1982 msg = GNUNET_CONTAINER_multihashmap_get (places, key);
1984 app_notify_place (msg, cls);
1990 ego_entry (void *cls, const struct GNUNET_HashCode *key, void *value)
1992 app_notify_ego (value, cls);
1998 * Handle application connection.
2001 client_recv_app_connect (void *cls, struct GNUNET_SERVER_Client *client,
2002 const struct GNUNET_MessageHeader *msg)
2004 const struct AppConnectRequest *creq
2005 = (const struct AppConnectRequest *) msg;
2007 uint8_t app_id_size = ntohs (creq->header.size) - sizeof (*creq);
2008 const char *app_id = NULL;
2009 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &creq[1],
2010 app_id_size, 1, &app_id);
2011 if (0 == offset || offset != app_id_size)
2014 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2018 struct GNUNET_HashCode app_id_hash;
2019 GNUNET_CRYPTO_hash (app_id, app_id_size, &app_id_hash);
2021 GNUNET_CONTAINER_multihashmap_iterate (egos, ego_entry, client);
2022 app_notify_ego_end (client);
2024 struct GNUNET_CONTAINER_MultiHashMap *
2025 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
2026 if (NULL != app_places)
2027 GNUNET_CONTAINER_multihashmap_iterate (app_places, app_place_entry_notify, client);
2028 app_notify_place_end (client);
2030 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
2031 cli->client = client;
2032 struct Application *app = GNUNET_CONTAINER_multihashmap_get (apps,
2035 app = GNUNET_malloc (sizeof (*app));
2036 (void) GNUNET_CONTAINER_multihashmap_put (apps, &app_id_hash, app,
2037 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
2039 GNUNET_CONTAINER_DLL_insert (app->clients_head, app->clients_tail, cli);
2041 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2042 "%p Application %s connected.\n", app, app_id);
2044 struct Client *ctx = GNUNET_new (struct Client);
2045 ctx->app_id = GNUNET_malloc (app_id_size);
2046 memcpy (ctx->app_id, app_id, app_id_size);
2048 GNUNET_SERVER_client_set_user_context (client, ctx);
2049 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2054 * Handle application detach request.
2057 client_recv_app_detach (void *cls, struct GNUNET_SERVER_Client *client,
2058 const struct GNUNET_MessageHeader *msg)
2061 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2062 GNUNET_assert (NULL != ctx);
2064 struct Place *plc = ctx->plc;
2066 const struct AppDetachRequest *req
2067 = (const struct AppDetachRequest *) msg;
2069 int ret = app_place_remove (ctx->app_id, &plc->ego_pub_key, &req->place_pub_key);
2070 client_send_result (client, req->op_id, ret, NULL, 0);
2072 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2077 app_places_entry_remove (void *cls, const struct GNUNET_HashCode *key, void *value)
2079 struct Place *plc = cls;
2080 const char *app_id = value;
2081 app_place_remove (app_id, &plc->ego_pub_key, &plc->pub_key);
2087 * Handle application detach request.
2090 client_recv_place_leave (void *cls, struct GNUNET_SERVER_Client *client,
2091 const struct GNUNET_MessageHeader *msg)
2094 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2095 GNUNET_assert (NULL != ctx);
2096 struct Place *plc = ctx->plc;
2098 /* FIXME: remove all app subscriptions and leave this place */
2100 struct GNUNET_CONTAINER_MultiHashMap *
2101 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &plc->pub_key_hash);
2102 if (NULL != place_apps)
2104 GNUNET_CONTAINER_multihashmap_iterate (place_apps, app_places_entry_remove, plc);
2107 /* FIXME: disconnect from the network, but keep local connection for history access */
2109 /* Disconnect all clients connected to the place */
2110 struct ClientListItem *cli = plc->clients_head, *next;
2113 GNUNET_CONTAINER_DLL_remove (plc->clients_head, plc->clients_tail, cli);
2114 GNUNET_SERVER_client_disconnect (cli->client);
2120 if (GNUNET_YES != plc->is_disconnected)
2122 plc->is_disconnected = GNUNET_YES;
2123 if (NULL != plc->tmit_msgs_head)
2124 { /* Send pending messages to PSYC before cleanup. */
2125 psyc_transmit_message (plc);
2129 cleanup_place (plc);
2135 struct JoinDecisionClosure
2137 int32_t is_admitted;
2138 struct GNUNET_PSYC_Message *msg;
2143 * Iterator callback for responding to join requests.
2146 psyc_send_join_decision (void *cls, const struct GNUNET_HashCode *pub_key_hash,
2149 struct JoinDecisionClosure *jcls = cls;
2150 struct GNUNET_PSYC_JoinHandle *jh = value;
2151 // FIXME: add relays
2152 GNUNET_PSYC_join_decision (jh, jcls->is_admitted, 0, NULL, jcls->msg);
2158 * Handle an entry decision from a host client.
2161 client_recv_join_decision (void *cls, struct GNUNET_SERVER_Client *client,
2162 const struct GNUNET_MessageHeader *msg)
2165 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2166 GNUNET_assert (NULL != ctx);
2167 struct Place *plc = ctx->plc;
2168 if (GNUNET_YES != plc->is_host) {
2170 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2173 struct Host *hst = (struct Host *) plc;
2175 struct GNUNET_PSYC_JoinDecisionMessage *
2176 dcsn = (struct GNUNET_PSYC_JoinDecisionMessage *) msg;
2177 struct JoinDecisionClosure jcls;
2178 jcls.is_admitted = ntohl (dcsn->is_admitted);
2180 = (sizeof (*dcsn) + sizeof (*jcls.msg) <= ntohs (msg->size))
2181 ? (struct GNUNET_PSYC_Message *) &dcsn[1]
2184 struct GNUNET_HashCode slave_pub_hash;
2185 GNUNET_CRYPTO_hash (&dcsn->slave_pub_key, sizeof (dcsn->slave_pub_key),
2188 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2189 "%p Got join decision (%d) from client for place %s..\n",
2190 hst, jcls.is_admitted, GNUNET_h2s (&plc->pub_key_hash));
2191 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2192 "%p ..and slave %s.\n",
2193 hst, GNUNET_h2s (&slave_pub_hash));
2195 GNUNET_CONTAINER_multihashmap_get_multiple (hst->join_reqs, &slave_pub_hash,
2196 &psyc_send_join_decision, &jcls);
2197 GNUNET_CONTAINER_multihashmap_remove_all (hst->join_reqs, &slave_pub_hash);
2198 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2203 * Send acknowledgement to a client.
2205 * Sent after a message fragment has been passed on to multicast.
2207 * @param plc The place struct for the client.
2210 send_message_ack (struct Place *plc, struct GNUNET_SERVER_Client *client)
2212 struct GNUNET_MessageHeader res;
2213 res.size = htons (sizeof (res));
2214 res.type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK);
2215 client_send_msg (client, &res);
2220 * Proceed to the next message part in the transmission queue.
2223 * Place where the transmission is going on.
2225 * Currently transmitted message.
2227 * Currently transmitted message fragment.
2229 * @return @a tmit_frag, or NULL if reached the end of fragment.
2231 static struct FragmentTransmitQueue *
2232 psyc_transmit_queue_next_part (struct Place *plc,
2233 struct MessageTransmitQueue *tmit_msg,
2234 struct FragmentTransmitQueue *tmit_frag)
2236 uint16_t psize = ntohs (tmit_frag->next_part->size);
2237 if ((char *) tmit_frag->next_part + psize - ((char *) &tmit_frag[1])
2240 tmit_frag->next_part
2241 = (struct GNUNET_MessageHeader *) ((char *) tmit_frag->next_part + psize);
2243 else /* Reached end of current fragment. */
2245 if (NULL != tmit_frag->client)
2246 send_message_ack (plc, tmit_frag->client);
2247 GNUNET_CONTAINER_DLL_remove (tmit_msg->frags_head, tmit_msg->frags_tail, tmit_frag);
2248 GNUNET_free (tmit_frag);
2256 * Proceed to next message in transmission queue.
2259 * Place where the transmission is going on.
2261 * Currently transmitted message.
2263 * @return The next message in queue, or NULL if queue is empty.
2265 static struct MessageTransmitQueue *
2266 psyc_transmit_queue_next_msg (struct Place *plc,
2267 struct MessageTransmitQueue *tmit_msg)
2269 GNUNET_CONTAINER_DLL_remove (plc->tmit_msgs_head, plc->tmit_msgs_tail, tmit_msg);
2270 GNUNET_free (tmit_msg);
2271 return plc->tmit_msgs_head;
2276 * Callback for data transmission to PSYC.
2279 psyc_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2281 struct Place *plc = cls;
2282 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2283 GNUNET_assert (NULL != tmit_msg);
2284 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2285 if (NULL == tmit_frag)
2286 { /* Rest of the message have not arrived yet, pause transmission */
2290 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2293 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2294 "%p psyc_transmit_notify_data: nothing to send.\n", plc);
2299 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2300 "%p psyc_transmit_notify_data()\n", plc);
2301 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, pmsg);
2303 uint16_t ptype = ntohs (pmsg->type);
2304 uint16_t pdata_size = ntohs (pmsg->size) - sizeof (*pmsg);
2309 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA:
2310 if (*data_size < pdata_size)
2312 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2313 "%p psyc_transmit_notify_data: buffer size too small for data.\n", plc);
2317 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2318 "%p psyc_transmit_notify_data: sending %u bytes.\n",
2321 *data_size = pdata_size;
2322 memcpy (data, &pmsg[1], *data_size);
2326 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2331 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2333 ret = GNUNET_SYSERR;
2337 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2338 "%p psyc_transmit_notify_data: unexpected message part of type %u.\n",
2340 ret = GNUNET_SYSERR;
2343 if (GNUNET_SYSERR == ret && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL != ptype)
2346 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2347 plc->is_disconnected = GNUNET_YES;
2348 GNUNET_SERVER_client_disconnect (tmit_frag->client);
2349 GNUNET_SCHEDULER_add_now (&cleanup_place, plc);
2354 tmit_frag = psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2355 if (NULL != tmit_frag)
2357 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2358 ptype = ntohs (pmsg->type);
2361 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2364 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2365 ret = GNUNET_SYSERR;
2370 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2371 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2372 tmit_frag = psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2376 if (NULL == tmit_msg->frags_head
2377 && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= ptype)
2378 { /* Reached end of current message. */
2379 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2383 if (ret != GNUNET_NO)
2385 if (NULL != tmit_msg)
2387 psyc_transmit_message (plc);
2389 else if (GNUNET_YES == plc->is_disconnected)
2391 /* FIXME: handle partial message (when still in_transmit) */
2392 cleanup_place (plc);
2400 * Callback for modifier transmission to PSYC.
2403 psyc_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2404 uint8_t *oper, uint32_t *full_value_size)
2406 struct Place *plc = cls;
2407 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2408 GNUNET_assert (NULL != tmit_msg);
2409 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2410 if (NULL == tmit_frag)
2411 { /* Rest of the message have not arrived yet, pause transmission */
2415 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2418 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2419 "%p psyc_transmit_notify_mod: nothing to send.\n", plc);
2424 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2425 "%p psyc_transmit_notify_mod()\n", plc);
2426 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, pmsg);
2428 uint16_t ptype = ntohs (pmsg->type);
2433 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MODIFIER:
2437 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2438 "%p psyc_transmit_notify_mod: oper is NULL.\n", plc);
2439 ret = GNUNET_SYSERR;
2442 struct GNUNET_PSYC_MessageModifier *
2443 pmod = (struct GNUNET_PSYC_MessageModifier *) tmit_frag->next_part;
2444 uint16_t mod_size = ntohs (pmod->header.size) - sizeof (*pmod);
2446 if (*data_size < mod_size)
2448 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2449 "%p psyc_transmit_notify_mod: buffer size too small for data.\n", plc);
2454 *full_value_size = ntohl (pmod->value_size);
2456 *data_size = mod_size;
2457 memcpy (data, &pmod[1], mod_size);
2462 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MOD_CONT:
2466 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2467 "%p psyc_transmit_notify_mod: oper is not NULL.\n", plc);
2468 ret = GNUNET_SYSERR;
2471 uint16_t mod_size = ntohs (pmsg->size) - sizeof (*pmsg);
2472 if (*data_size < mod_size)
2474 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2475 "%p psyc_transmit_notify_mod: buffer size too small for data.\n", plc);
2479 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2480 "%p psyc_transmit_notify_mod: sending %u bytes.\n", plc, mod_size);
2482 *data_size = mod_size;
2483 memcpy (data, &pmsg[1], *data_size);
2488 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA:
2489 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2490 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2496 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2497 "%p psyc_transmit_notify_mod: unexpected message part of type %u.\n",
2499 ret = GNUNET_SYSERR;
2502 if (GNUNET_SYSERR == ret)
2505 ret = GNUNET_SYSERR;
2506 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2507 plc->is_disconnected = GNUNET_YES;
2508 GNUNET_SERVER_client_disconnect (tmit_frag->client);
2509 GNUNET_SCHEDULER_add_now (&cleanup_place, plc);
2513 if (GNUNET_YES != ret)
2514 psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2516 if (NULL == tmit_msg->frags_head
2517 && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= ptype)
2518 { /* Reached end of current message. */
2519 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2526 * Callback for data transmission from a host to PSYC.
2529 host_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2531 int ret = psyc_transmit_notify_data (cls, data_size, data);
2533 if (GNUNET_NO != ret)
2535 struct Host *hst = cls;
2536 hst->tmit_handle = NULL;
2543 * Callback for the transmit functions of multicast.
2546 guest_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2548 int ret = psyc_transmit_notify_data (cls, data_size, data);
2550 if (GNUNET_NO != ret)
2552 struct Guest *gst = cls;
2553 gst->tmit_handle = NULL;
2560 * Callback for modifier transmission from a host to PSYC.
2563 host_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2564 uint8_t *oper, uint32_t *full_value_size)
2566 int ret = psyc_transmit_notify_mod (cls, data_size, data,
2567 oper, full_value_size);
2568 if (GNUNET_SYSERR == ret)
2570 struct Host *hst = cls;
2571 hst->tmit_handle = NULL;
2578 * Callback for modifier transmission from a guest to PSYC.
2581 guest_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2582 uint8_t *oper, uint32_t *full_value_size)
2584 int ret = psyc_transmit_notify_mod (cls, data_size, data,
2585 oper, full_value_size);
2586 if (GNUNET_SYSERR == ret)
2588 struct Guest *gst = cls;
2589 gst->tmit_handle = NULL;
2596 * Get method part of next message from transmission queue.
2599 * Next item in message transmission queue.
2601 * The malloc'd message method is returned here.
2603 * @return #GNUNET_OK on success
2604 * #GNUNET_NO if there are no more messages in queue.
2605 * #GNUNET_SYSERR if the next message is malformed.
2607 static struct GNUNET_PSYC_MessageMethod *
2608 psyc_transmit_queue_next_method (struct Place *plc)
2610 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2611 if (NULL == tmit_msg)
2614 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2615 if (NULL == tmit_frag)
2621 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2623 || GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD != ntohs (pmsg->type))
2625 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2626 "%p psyc_transmit_queue_next_method: unexpected message part of type %u.\n",
2627 plc, NULL != pmsg ? ntohs (pmsg->type) : 0);
2632 uint16_t psize = ntohs (pmsg->size);
2633 struct GNUNET_PSYC_MessageMethod *
2634 pmeth = (struct GNUNET_PSYC_MessageMethod *) GNUNET_copy_message (pmsg);
2636 if (psize < sizeof (*pmeth) + 1 || '\0' != *((char *) pmeth + psize - 1))
2638 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2639 "%p psyc_transmit_queue_next_method: invalid method name.\n",
2641 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2642 "%zu <= %u || NUL != %u\n",
2643 sizeof (*pmeth), psize, *((char *) pmeth + psize - 1));
2645 GNUNET_free (pmeth);
2649 psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2655 * Transmit the next message in queue from the host to the PSYC channel.
2658 psyc_master_transmit_message (struct Host *hst)
2660 struct Place *plc = &hst->plc;
2662 if (NULL == hst->tmit_handle)
2664 struct GNUNET_PSYC_MessageMethod *
2665 pmeth = psyc_transmit_queue_next_method (plc);
2667 return GNUNET_SYSERR;
2669 hst->tmit_handle = (void *) &hst->tmit_handle;
2670 struct GNUNET_PSYC_MasterTransmitHandle *
2671 tmit_handle = GNUNET_PSYC_master_transmit (hst->master, (const char *) &pmeth[1],
2672 &host_transmit_notify_mod,
2673 &host_transmit_notify_data, hst,
2675 if (NULL != hst->tmit_handle)
2676 hst->tmit_handle = tmit_handle;
2677 GNUNET_free (pmeth);
2681 GNUNET_PSYC_master_transmit_resume (hst->tmit_handle);
2688 * Transmit the next message in queue from a guest to the PSYC channel.
2691 psyc_slave_transmit_message (struct Guest *gst)
2693 struct Place *plc = &gst->plc;
2695 if (NULL == gst->tmit_handle)
2697 struct GNUNET_PSYC_MessageMethod *
2698 pmeth = psyc_transmit_queue_next_method (plc);
2700 return GNUNET_SYSERR;
2702 gst->tmit_handle = (void *) &gst->tmit_handle;
2703 struct GNUNET_PSYC_SlaveTransmitHandle *
2704 tmit_handle = GNUNET_PSYC_slave_transmit (gst->slave, (const char *) &pmeth[1],
2705 &guest_transmit_notify_mod,
2706 &guest_transmit_notify_data, gst,
2708 if (NULL != gst->tmit_handle)
2709 gst->tmit_handle = tmit_handle;
2710 GNUNET_free (pmeth);
2714 GNUNET_PSYC_slave_transmit_resume (gst->tmit_handle);
2721 * Transmit a message to PSYC.
2724 psyc_transmit_message (struct Place *plc)
2728 ? psyc_master_transmit_message ((struct Host *) plc)
2729 : psyc_slave_transmit_message ((struct Guest *) plc);
2734 * Queue message parts for sending to PSYC.
2736 * @param plc Place to send to.
2737 * @param client Client the message originates from.
2738 * @param data_size Size of @a data.
2739 * @param data Concatenated message parts.
2740 * @param first_ptype First message part type in @a data.
2741 * @param last_ptype Last message part type in @a data.
2743 static struct MessageTransmitQueue *
2744 psyc_transmit_queue_message (struct Place *plc,
2745 struct GNUNET_SERVER_Client *client,
2748 uint16_t first_ptype, uint16_t last_ptype,
2749 struct MessageTransmitQueue *tmit_msg)
2751 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD == first_ptype)
2753 tmit_msg = GNUNET_malloc (sizeof (*tmit_msg));
2754 GNUNET_CONTAINER_DLL_insert_tail (plc->tmit_msgs_head, plc->tmit_msgs_tail, tmit_msg);
2756 else if (NULL == tmit_msg)
2761 struct FragmentTransmitQueue *
2762 tmit_frag = GNUNET_malloc (sizeof (*tmit_frag) + data_size);
2763 memcpy (&tmit_frag[1], data, data_size);
2764 tmit_frag->next_part = (struct GNUNET_MessageHeader *) &tmit_frag[1];
2765 tmit_frag->client = client;
2766 tmit_frag->size = data_size;
2768 GNUNET_CONTAINER_DLL_insert_tail (tmit_msg->frags_head, tmit_msg->frags_tail, tmit_frag);
2769 tmit_msg->client = client;
2775 * Cancel transmission of current message to PSYC.
2777 * @param plc Place to send to.
2778 * @param client Client the message originates from.
2781 psyc_transmit_cancel (struct Place *plc, struct GNUNET_SERVER_Client *client)
2783 uint16_t type = GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL;
2785 struct GNUNET_MessageHeader msg;
2786 msg.size = htons (sizeof (msg));
2787 msg.type = htons (type);
2789 psyc_transmit_queue_message (plc, client, sizeof (msg), &msg, type, type, NULL);
2790 psyc_transmit_message (plc);
2792 /* FIXME: cleanup */
2797 * Handle an incoming message from a client, to be transmitted to the place.
2800 client_recv_psyc_message (void *cls, struct GNUNET_SERVER_Client *client,
2801 const struct GNUNET_MessageHeader *msg)
2804 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2805 GNUNET_assert (NULL != ctx);
2806 struct Place *plc = ctx->plc;
2807 int ret = GNUNET_SYSERR;
2809 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2810 "%p Received message from client.\n", plc);
2811 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, msg);
2813 if (GNUNET_YES != plc->is_ready)
2815 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2816 "%p Place is not ready yet, disconnecting client.\n", plc);
2818 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2822 uint16_t size = ntohs (msg->size);
2823 uint16_t psize = size - sizeof (*msg);
2824 if (psize < sizeof (struct GNUNET_MessageHeader)
2825 || GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD < psize)
2827 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2828 "%p Received message with invalid payload size (%u) from client.\n",
2831 psyc_transmit_cancel (plc, client);
2832 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2836 uint16_t first_ptype = 0, last_ptype = 0;
2838 == GNUNET_PSYC_receive_check_parts (psize, (const char *) &msg[1],
2839 &first_ptype, &last_ptype))
2841 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2842 "%p Received invalid message part from client.\n", plc);
2844 psyc_transmit_cancel (plc, client);
2845 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2848 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2849 "%p Received message with first part type %u and last part type %u.\n",
2850 plc, first_ptype, last_ptype);
2853 = psyc_transmit_queue_message (plc, client, psize, &msg[1],
2854 first_ptype, last_ptype, ctx->tmit_msg);
2855 if (NULL != ctx->tmit_msg)
2857 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= last_ptype)
2858 ctx->tmit_msg = NULL;
2859 ret = psyc_transmit_message (plc);
2862 if (GNUNET_OK != ret)
2864 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2865 "%p Received invalid message part from client.\n", plc);
2867 psyc_transmit_cancel (plc, client);
2868 ret = GNUNET_SYSERR;
2870 GNUNET_SERVER_receive_done (client, ret);
2875 * A historic message arrived from PSYC.
2878 psyc_recv_history_message (void *cls, const struct GNUNET_PSYC_MessageHeader *msg)
2880 struct OperationClosure *opcls = cls;
2881 struct Place *plc = opcls->plc;
2883 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2884 "%p Received historic message #%" PRId64 " (flags: %x)\n",
2885 plc, GNUNET_ntohll (msg->message_id), ntohl (msg->flags));
2887 uint16_t size = ntohs (msg->header.size);
2889 struct GNUNET_OperationResultMessage *
2890 res = GNUNET_malloc (sizeof (*res) + size);
2891 res->header.size = htons (sizeof (*res) + size);
2892 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT);
2893 res->op_id = opcls->op_id;
2894 res->result_code = GNUNET_htonll (GNUNET_OK);
2896 memcpy (&res[1], msg, size);
2898 /** @todo FIXME: send only to requesting client */
2899 place_send_msg (plc, &res->header);
2906 * Result of message history replay from PSYC.
2909 psyc_recv_history_result (void *cls, int64_t result,
2910 const void *err_msg, uint16_t err_msg_size)
2912 struct OperationClosure *opcls = cls;
2913 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2914 "%p History replay #%" PRIu64 ": "
2915 "PSYCstore returned %" PRId64 " (%.*s)\n",
2916 opcls->plc, GNUNET_ntohll (opcls->op_id), result,
2917 err_msg_size, (const char *) err_msg);
2919 // FIXME: place might have been destroyed
2920 client_send_result (opcls->client, opcls->op_id, result, err_msg, err_msg_size);
2925 * Client requests channel history.
2928 client_recv_history_replay (void *cls, struct GNUNET_SERVER_Client *client,
2929 const struct GNUNET_MessageHeader *msg)
2932 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2933 GNUNET_assert (NULL != ctx);
2934 struct Place *plc = ctx->plc;
2936 const struct GNUNET_PSYC_HistoryRequestMessage *
2937 req = (const struct GNUNET_PSYC_HistoryRequestMessage *) msg;
2938 uint16_t size = ntohs (msg->size);
2939 const char *method_prefix = (const char *) &req[1];
2941 if (size < sizeof (*req) + 1
2942 || '\0' != method_prefix[size - sizeof (*req) - 1])
2944 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2945 "%p History replay #%" PRIu64 ": "
2946 "invalid method prefix. size: %u < %zu?\n",
2947 plc, GNUNET_ntohll (req->op_id), size, sizeof (*req) + 1);
2949 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2953 struct OperationClosure *opcls = GNUNET_malloc (sizeof (*opcls));
2954 opcls->client = client;
2956 opcls->op_id = req->op_id;
2957 opcls->flags = ntohl (req->flags);
2959 if (0 == req->message_limit)
2960 GNUNET_PSYC_channel_history_replay (plc->channel,
2961 GNUNET_ntohll (req->start_message_id),
2962 GNUNET_ntohll (req->end_message_id),
2963 method_prefix, opcls->flags,
2964 psyc_recv_history_message, NULL,
2965 psyc_recv_history_result, opcls);
2967 GNUNET_PSYC_channel_history_replay_latest (plc->channel,
2968 GNUNET_ntohll (req->message_limit),
2969 method_prefix, opcls->flags,
2970 psyc_recv_history_message, NULL,
2971 psyc_recv_history_result, opcls);
2973 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2978 * A state variable part arrived from PSYC.
2981 psyc_recv_state_var (void *cls,
2982 const struct GNUNET_MessageHeader *mod,
2985 uint32_t value_size,
2986 uint32_t full_value_size)
2988 struct OperationClosure *opcls = cls;
2989 struct Place *plc = opcls->plc;
2991 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2992 "%p Received state variable %s from PSYC\n",
2995 uint16_t size = ntohs (mod->size);
2997 struct GNUNET_OperationResultMessage *
2998 res = GNUNET_malloc (sizeof (*res) + size);
2999 res->header.size = htons (sizeof (*res) + size);
3000 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT);
3001 res->op_id = opcls->op_id;
3002 res->result_code = GNUNET_htonll (GNUNET_OK);
3004 memcpy (&res[1], mod, size);
3006 /** @todo FIXME: send only to requesting client */
3007 place_send_msg (plc, &res->header);
3014 * Result of retrieving state variable from PSYC.
3017 psyc_recv_state_result (void *cls, int64_t result,
3018 const void *err_msg, uint16_t err_msg_size)
3020 struct OperationClosure *opcls = cls;
3021 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3022 "%p State get #%" PRIu64 ": "
3023 "PSYCstore returned %" PRId64 " (%.*s)\n",
3024 opcls->plc, GNUNET_ntohll (opcls->op_id), result,
3025 err_msg_size, (const char *) err_msg);
3027 // FIXME: place might have been destroyed
3028 client_send_result (opcls->client, opcls->op_id, result, err_msg, err_msg_size);
3033 * Client requests channel history.
3036 client_recv_state_get (void *cls, struct GNUNET_SERVER_Client *client,
3037 const struct GNUNET_MessageHeader *msg)
3040 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
3041 GNUNET_assert (NULL != ctx);
3042 struct Place *plc = ctx->plc;
3044 const struct GNUNET_PSYC_StateRequestMessage *
3045 req = (const struct GNUNET_PSYC_StateRequestMessage *) msg;
3046 uint16_t size = ntohs (msg->size);
3047 const char *name = (const char *) &req[1];
3049 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3050 "%p State get #%" PRIu64 ": %s\n",
3051 plc, GNUNET_ntohll (req->op_id), name);
3053 if (size < sizeof (*req) + 1
3054 || '\0' != name[size - sizeof (*req) - 1])
3056 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3057 "%p State get #%" PRIu64 ": "
3058 "invalid name. size: %u < %zu?\n",
3059 plc, GNUNET_ntohll (req->op_id), size, sizeof (*req) + 1);
3061 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
3065 struct OperationClosure *opcls = GNUNET_malloc (sizeof (*opcls));
3066 opcls->client = client;
3068 opcls->op_id = req->op_id;
3070 switch (ntohs (msg->type))
3072 case GNUNET_MESSAGE_TYPE_PSYC_STATE_GET:
3073 GNUNET_PSYC_channel_state_get (plc->channel, name,
3074 psyc_recv_state_var,
3075 psyc_recv_state_result, opcls);
3078 case GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX:
3079 GNUNET_PSYC_channel_state_get_prefix (plc->channel, name,
3080 psyc_recv_state_var,
3081 psyc_recv_state_result, opcls);
3088 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3093 namestore_recv_records_store_result (void *cls, int32_t result,
3094 const char *err_msg)
3096 struct OperationClosure *ocls = cls;
3097 client_send_result (ocls->client, ocls->op_id, result, err_msg,
3098 (NULL != err_msg) ? strlen (err_msg) : 0);
3104 * Handle request to add PLACE record to GNS zone.
3107 client_recv_zone_add_place (void *cls, struct GNUNET_SERVER_Client *client,
3108 const struct GNUNET_MessageHeader *msg)
3110 const struct ZoneAddPlaceRequest *preq
3111 = (const struct ZoneAddPlaceRequest *) msg;
3113 uint16_t remaining = ntohs (preq->header.size) - sizeof (*preq);
3114 const char *p = (const char *) &preq[1];
3115 const char *name = NULL, *password = NULL;
3116 uint16_t offset = GNUNET_STRINGS_buffer_tokenize (p, remaining, 2,
3118 remaining -= offset;
3120 const struct GNUNET_PeerIdentity *
3121 relays = (const struct GNUNET_PeerIdentity *) p;
3122 uint16_t relay_size = ntohl (preq->relay_count) * sizeof (*relays);
3124 if (0 == offset || remaining != relay_size)
3127 client_send_result (client, preq->op_id, GNUNET_SYSERR, NULL, 0);
3128 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3132 struct GNUNET_GNSRECORD_Data rd = { };
3133 rd.record_type = GNUNET_GNSRECORD_TYPE_PLACE;
3134 rd.flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
3135 rd.expiration_time = GNUNET_ntohll (preq->expiration_time);
3137 struct GNUNET_GNSRECORD_PlaceData *
3138 rec = GNUNET_malloc (sizeof (*rec) + relay_size);
3139 rec->place_pub_key = preq->place_pub_key;
3140 rec->origin = this_peer;
3141 rec->relay_count = preq->relay_count;
3142 memcpy (&rec[1], relays, relay_size);
3145 rd.data_size = sizeof (*rec) + relay_size;
3147 struct GNUNET_HashCode ego_pub_hash;
3148 GNUNET_CRYPTO_hash (&preq->ego_pub_key, sizeof (preq->ego_pub_key), &ego_pub_hash);
3149 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3152 client_send_result (client, preq->op_id, GNUNET_SYSERR, NULL, 0);
3156 struct OperationClosure *ocls = GNUNET_malloc (sizeof (*ocls));
3157 ocls->client = client;
3158 ocls->op_id = preq->op_id;
3159 GNUNET_NAMESTORE_records_store (namestore, &ego->key,
3161 namestore_recv_records_store_result, ocls);
3162 /** @todo refresh stored records later */
3164 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3169 * Handle request to add PLACE record to GNS zone.
3172 client_recv_zone_add_nym (void *cls, struct GNUNET_SERVER_Client *client,
3173 const struct GNUNET_MessageHeader *msg)
3175 const struct ZoneAddNymRequest *nreq
3176 = (const struct ZoneAddNymRequest *) msg;
3178 uint16_t name_size = ntohs (nreq->header.size) - sizeof (*nreq);
3179 const char *name = NULL;
3180 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &nreq[1],
3181 name_size, 1, &name);
3182 if (0 == offset || offset != name_size)
3185 client_send_result (client, nreq->op_id, GNUNET_SYSERR, NULL, 0);
3186 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3190 struct GNUNET_GNSRECORD_Data rd = { };
3191 rd.record_type = GNUNET_GNSRECORD_TYPE_PKEY;
3192 rd.flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
3193 rd.expiration_time = GNUNET_ntohll (nreq->expiration_time);
3194 rd.data = &nreq->nym_pub_key;
3195 rd.data_size = sizeof (nreq->nym_pub_key);
3197 struct GNUNET_HashCode ego_pub_hash;
3198 GNUNET_CRYPTO_hash (&nreq->ego_pub_key, sizeof (nreq->ego_pub_key), &ego_pub_hash);
3199 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3202 client_send_result (client, nreq->op_id, GNUNET_SYSERR, NULL, 0);
3206 struct OperationClosure *ocls = GNUNET_malloc (sizeof (*ocls));
3207 ocls->client = client;
3208 ocls->op_id = nreq->op_id;
3209 GNUNET_NAMESTORE_records_store (namestore, &ego->key,
3211 namestore_recv_records_store_result, ocls);
3212 /** @todo refresh stored records later */
3214 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3218 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
3219 { client_recv_host_enter, NULL,
3220 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER, 0 },
3222 { client_recv_guest_enter, NULL,
3223 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER, 0 },
3225 { client_recv_guest_enter_by_name, NULL,
3226 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_BY_NAME, 0 },
3228 { client_recv_join_decision, NULL,
3229 GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION, 0 },
3231 { client_recv_psyc_message, NULL,
3232 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE, 0 },
3234 { client_recv_history_replay, NULL,
3235 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_REPLAY, 0 },
3237 { client_recv_state_get, NULL,
3238 GNUNET_MESSAGE_TYPE_PSYC_STATE_GET, 0 },
3240 { client_recv_state_get, NULL,
3241 GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX, 0 },
3243 { client_recv_zone_add_place, NULL,
3244 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_PLACE, 0 },
3246 { client_recv_zone_add_nym, NULL,
3247 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_NYM, 0 },
3249 { client_recv_app_connect, NULL,
3250 GNUNET_MESSAGE_TYPE_SOCIAL_APP_CONNECT, 0 },
3252 { client_recv_app_detach, NULL,
3253 GNUNET_MESSAGE_TYPE_SOCIAL_APP_DETACH, 0 },
3255 { client_recv_place_leave, NULL,
3256 GNUNET_MESSAGE_TYPE_SOCIAL_PLACE_LEAVE, 0 },
3258 { client_recv_msg_proc_set, NULL,
3259 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_SET, 0 },
3261 { client_recv_msg_proc_clear, NULL,
3262 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_CLEAR, 0 },
3264 { NULL, NULL, 0, 0 }
3269 path_basename (const char *path)
3271 const char *basename = strrchr (path, DIR_SEPARATOR);
3272 if (NULL != basename)
3275 if (NULL == basename || '\0' == basename)
3282 struct PlaceLoadClosure
3285 const char *ego_pub_str;
3289 /** Load a place file */
3291 file_place_load (void *cls, const char *place_filename)
3293 struct PlaceLoadClosure *plcls = cls;
3295 const char *place_pub_str = path_basename (place_filename);
3296 if (NULL == place_pub_str)
3302 char *filename = NULL;
3303 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s",
3304 dir_social, DIR_SEPARATOR,
3305 "places", DIR_SEPARATOR,
3306 plcls->ego_pub_str, DIR_SEPARATOR,
3309 uint64_t file_size = 0;
3311 GNUNET_DISK_file_size (filename, &file_size, GNUNET_YES, GNUNET_YES)
3312 || file_size < sizeof (struct PlaceEnterRequest))
3314 GNUNET_free (filename);
3318 struct PlaceEnterRequest *ereq = GNUNET_malloc (file_size);
3319 ssize_t read_size = GNUNET_DISK_fn_read (filename, ereq, file_size);
3320 GNUNET_free (filename);
3321 if (read_size < 0 || read_size < sizeof (*ereq))
3327 uint16_t ereq_size = ntohs (ereq->header.size);
3328 if (read_size != ereq_size)
3334 switch (ntohs (ereq->header.type))
3336 case GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER:
3337 if (ereq_size < sizeof (struct HostEnterRequest))
3342 struct HostEnterRequest *hreq = (struct HostEnterRequest *) ereq;
3343 host_enter (hreq, NULL);
3346 case GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER:
3347 if (ereq_size < sizeof (struct GuestEnterRequest))
3352 struct GuestEnterRequest *greq = (struct GuestEnterRequest *) ereq;
3353 guest_enter (greq, NULL);
3361 app_place_add (plcls->app_id, ereq);
3368 * Read @e place_pub_str entries in @a dir_ego
3371 * Data directory of an application ego.
3372 * $GNUNET_DATA_HOME/social/apps/$app_id/$ego_pub_str/
3375 scan_app_ego_dir (void *cls, const char *dir_ego)
3377 struct PlaceLoadClosure *plcls = cls;
3378 plcls->ego_pub_str = path_basename (dir_ego);
3380 if (NULL != plcls->ego_pub_str)
3381 GNUNET_DISK_directory_scan (dir_ego, file_place_load, plcls);
3387 * Read @e ego_pub_str entries in @a dir_app
3390 * Data directory of an application.
3391 * $GNUNET_DATA_HOME/social/apps/$app_id/
3394 scan_app_dir (void *cls, const char *dir_app)
3396 if (GNUNET_YES != GNUNET_DISK_directory_test (dir_app, GNUNET_YES))
3399 struct PlaceLoadClosure plcls;
3400 plcls.app_id = path_basename (dir_app);
3402 if (NULL != plcls.app_id)
3403 GNUNET_DISK_directory_scan (dir_app, scan_app_ego_dir, &plcls);
3410 identity_recv_ego (void *cls, struct GNUNET_IDENTITY_Ego *id_ego,
3411 void **ctx, const char *name)
3413 if (NULL == id_ego) // end of initial list of egos
3416 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
3417 GNUNET_IDENTITY_ego_get_public_key (id_ego, &ego_pub_key);
3419 struct GNUNET_HashCode ego_pub_hash;
3420 GNUNET_CRYPTO_hash (&ego_pub_key, sizeof (ego_pub_key), &ego_pub_hash);
3422 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3425 GNUNET_free (ego->name);
3426 if (NULL == name) // deleted
3428 GNUNET_CONTAINER_multihashmap_remove (egos, &ego_pub_hash, ego);
3435 ego = GNUNET_malloc (sizeof (*ego));
3439 ego->key = *(GNUNET_IDENTITY_ego_get_private_key (id_ego));
3440 size_t name_size = strlen (name) + 1;
3441 ego->name = GNUNET_malloc (name_size);
3442 memcpy (ego->name, name, name_size);
3444 GNUNET_CONTAINER_multihashmap_put (egos, &ego_pub_hash, ego,
3445 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
3448 // FIXME: notify clients about changed ego
3453 * Connected to core service.
3456 core_connected (void *cls, const struct GNUNET_PeerIdentity *my_identity)
3458 this_peer = *my_identity;
3463 * Initialize the PSYC service.
3465 * @param cls Closure.
3466 * @param server The initialized server.
3467 * @param c Configuration to use.
3470 run (void *cls, struct GNUNET_SERVER_Handle *server,
3471 const struct GNUNET_CONFIGURATION_Handle *c)
3475 hosts = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
3476 guests = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
3477 place_guests = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3479 egos = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3480 apps = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3481 places = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3482 apps_places = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3483 places_apps = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3485 core = GNUNET_CORE_connect (cfg, NULL, core_connected, NULL, NULL,
3486 NULL, GNUNET_NO, NULL, GNUNET_NO, NULL);
3487 id = GNUNET_IDENTITY_connect (cfg, &identity_recv_ego, NULL);
3488 gns = GNUNET_GNS_connect (cfg);
3489 namestore = GNUNET_NAMESTORE_connect (cfg);
3490 stats = GNUNET_STATISTICS_create ("social", cfg);
3493 GNUNET_CONFIGURATION_get_value_filename (cfg, "social", "DATA_HOME",
3496 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
3497 "social", "DATA_HOME");
3501 GNUNET_asprintf (&dir_places, "%s%c%s",
3502 dir_social, DIR_SEPARATOR, "places");
3503 GNUNET_asprintf (&dir_apps, "%s%c%s",
3504 dir_social, DIR_SEPARATOR, "apps");
3506 GNUNET_DISK_directory_scan (dir_apps, scan_app_dir, NULL);
3508 nc = GNUNET_SERVER_notification_context_create (server, 1);
3509 GNUNET_SERVER_add_handlers (server, handlers);
3510 GNUNET_SERVER_disconnect_notify (server, &client_disconnect, NULL);
3511 GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
3516 * The main function for the service.
3518 * @param argc number of arguments from the command line
3519 * @param argv command line arguments
3520 * @return 0 ok, 1 on error
3523 main (int argc, char *const *argv)
3525 return (GNUNET_OK ==
3526 GNUNET_SERVICE_run (argc, argv, "social",
3527 GNUNET_SERVICE_OPTION_NONE,
3528 &run, NULL)) ? 0 : 1;
3531 /* end of gnunet-service-social.c */