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)
1603 return GNUNET_SYSERR;
1606 relays = (const struct GNUNET_PeerIdentity *) p;
1608 remaining -= relay_size;
1610 struct GNUNET_PSYC_Message *join_msg = NULL;
1611 uint16_t join_msg_size = 0;
1613 if (sizeof (struct GNUNET_MessageHeader) <= remaining)
1615 join_msg = (struct GNUNET_PSYC_Message *) p;
1616 join_msg_size = ntohs (join_msg->header.size);
1618 remaining -= join_msg_size;
1622 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1623 "%zu + %u + %u != %u\n",
1624 sizeof (*greq), relay_size, join_msg_size, greq_size);
1627 return GNUNET_SYSERR;
1631 gst->relays = GNUNET_malloc (relay_size);
1632 memcpy (gst->relays, relays, relay_size);
1635 gst->join_flags = ntohl (greq->flags);
1637 struct Place *plc = &gst->plc;
1639 plc->is_host = GNUNET_NO;
1640 plc->pub_key = greq->place_pub_key;
1641 plc->pub_key_hash = place_pub_hash;
1642 plc->ego_pub_key = ego_pub_key;
1643 plc->ego_pub_hash = ego_pub_hash;
1644 plc->ego_key = ego->key;
1646 if (NULL == plc_gst)
1648 plc_gst = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
1649 (void) GNUNET_CONTAINER_multihashmap_put (place_guests, &plc->pub_key_hash, plc_gst,
1650 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1652 (void) GNUNET_CONTAINER_multihashmap_put (plc_gst, &plc->ego_pub_hash, gst,
1653 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1654 (void) GNUNET_CONTAINER_multihashmap_put (guests, &plc->pub_key_hash, gst,
1655 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1657 = GNUNET_PSYC_slave_join (cfg, &plc->pub_key, &plc->ego_key,
1658 gst->join_flags, &gst->origin,
1659 gst->relay_count, gst->relays,
1660 &psyc_recv_message, NULL,
1661 &psyc_slave_connected,
1662 &psyc_recv_join_dcsn,
1664 plc->channel = GNUNET_PSYC_slave_get_channel (gst->slave);
1668 if (NULL != ret_gst)
1675 * Handle a connecting client entering a place as guest.
1678 client_recv_guest_enter (void *cls, struct GNUNET_SERVER_Client *client,
1679 const struct GNUNET_MessageHeader *msg)
1681 const struct GuestEnterRequest *
1682 greq = (const struct GuestEnterRequest *) msg;
1684 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1685 const char *app_id = NULL;
1686 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &greq[1],
1687 remaining, 1, &app_id);
1691 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1695 struct Guest *gst = NULL;
1696 struct Place *plc = NULL;
1698 switch (guest_enter (greq, &gst))
1702 app_place_save (app_id, (const struct PlaceEnterRequest *) greq);
1709 struct GNUNET_PSYC_CountersResultMessage res;
1710 res.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_ACK);
1711 res.header.size = htons (sizeof (res));
1712 res.result_code = htonl (GNUNET_OK);
1713 res.max_message_id = GNUNET_htonll (plc->max_message_id);
1715 client_send_msg (client, &res.header);
1716 if (NULL != gst->join_dcsn)
1717 client_send_msg (client, &gst->join_dcsn->header);
1723 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1727 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1728 "%p Client connected as guest to place %s.\n",
1729 gst, GNUNET_h2s (&plc->pub_key_hash));
1731 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
1732 cli->client = client;
1733 GNUNET_CONTAINER_DLL_insert (plc->clients_head, plc->clients_tail, cli);
1735 struct Client *ctx = GNUNET_new (struct Client);
1737 GNUNET_SERVER_client_set_user_context (client, ctx);
1738 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1742 struct GuestEnterByNameClosure
1744 struct GNUNET_SERVER_Client *client;
1747 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
1748 struct GNUNET_MessageHeader *join_msg;
1753 * Result of a GNS name lookup for entering a place.
1755 * @see GNUNET_SOCIAL_guest_enter_by_name
1758 gns_result_guest_enter (void *cls, uint32_t rd_count,
1759 const struct GNUNET_GNSRECORD_Data *rd)
1761 struct GuestEnterByNameClosure *gcls = cls;
1762 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1763 "%p GNS result: %u records.\n", gcls->client, rd_count);
1765 const struct GNUNET_GNSRECORD_PlaceData *
1766 rec = (const struct GNUNET_GNSRECORD_PlaceData *) rd->data;
1768 if (0 == rd_count || rd->data_size < sizeof (*rec))
1771 GNUNET_SERVER_receive_done (gcls->client, GNUNET_SYSERR);
1775 uint16_t relay_count = ntohl (rec->relay_count);
1776 struct GNUNET_PeerIdentity *relays = NULL;
1778 if (0 < relay_count)
1780 if (rd->data_size == sizeof (*rec) + relay_count * sizeof (struct GNUNET_PeerIdentity))
1782 relays = (struct GNUNET_PeerIdentity *) &rec[1];
1787 GNUNET_break_op (0);
1791 uint16_t app_id_size = strlen (gcls->app_id) + 1;
1792 uint16_t relay_size = relay_count * sizeof (*relays);
1793 uint16_t join_msg_size = 0;
1794 if (NULL != gcls->join_msg)
1795 join_msg_size = ntohs (gcls->join_msg->size);
1796 uint16_t greq_size = sizeof (struct GuestEnterRequest)
1797 + app_id_size + relay_size + join_msg_size;
1798 struct GuestEnterRequest *greq = GNUNET_malloc (greq_size);
1799 greq->header.size = htons (greq_size);
1800 greq->header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER);
1801 greq->ego_pub_key = gcls->ego_pub_key;
1802 greq->place_pub_key = rec->place_pub_key;
1803 greq->origin = rec->origin;
1804 greq->relay_count = rec->relay_count;
1807 memcpy (p, gcls->app_id, app_id_size);
1809 memcpy (p, relays, relay_size);
1811 memcpy (p, gcls->join_msg, join_msg_size);
1813 client_recv_guest_enter (NULL, gcls->client, &greq->header);
1815 GNUNET_free (gcls->app_id);
1816 if (NULL != gcls->password)
1817 GNUNET_free (gcls->password);
1818 if (NULL != gcls->join_msg)
1819 GNUNET_free (gcls->join_msg);
1826 * Handle a connecting client entering a place as guest using a GNS address.
1828 * Look up GNS address and generate a GuestEnterRequest from that.
1831 client_recv_guest_enter_by_name (void *cls, struct GNUNET_SERVER_Client *client,
1832 const struct GNUNET_MessageHeader *msg)
1834 const struct GuestEnterByNameRequest *
1835 greq = (const struct GuestEnterByNameRequest *) msg;
1837 struct GuestEnterByNameClosure *gcls = GNUNET_malloc (sizeof (*gcls));
1838 gcls->client = client;
1839 gcls->ego_pub_key = greq->ego_pub_key;
1841 const char *p = (const char *) &greq[1];
1842 const char *app_id = NULL, *password = NULL, *gns_name = NULL;
1843 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1844 uint16_t offset = GNUNET_STRINGS_buffer_tokenize (p, remaining, 3,
1849 remaining -= offset;
1851 if (0 != offset && sizeof (*gcls->join_msg) <= remaining)
1853 gcls->join_msg = GNUNET_copy_message ((struct GNUNET_MessageHeader *) p);
1854 remaining -= ntohs (gcls->join_msg->size);
1857 if (0 == offset || 0 != remaining)
1859 if (NULL != gcls->join_msg)
1860 GNUNET_free (gcls->join_msg);
1862 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1866 uint16_t app_id_size = strlen (app_id) + 1;
1867 gcls->app_id = GNUNET_malloc (app_id_size);
1868 memcpy (gcls->app_id, app_id, app_id_size);
1870 uint16_t password_size = strlen (password);
1871 if (0 < password_size++)
1873 gcls->password = GNUNET_malloc (password_size);
1874 memcpy (gcls->password, password, password_size);
1877 GNUNET_GNS_lookup (gns, gns_name, &greq->ego_pub_key,
1878 GNUNET_GNSRECORD_TYPE_PLACE, GNUNET_GNS_LO_DEFAULT,
1879 NULL, gns_result_guest_enter, gcls);
1884 app_notify_place (struct GNUNET_MessageHeader *msg,
1885 struct GNUNET_SERVER_Client *client)
1887 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1888 "%p Sending place notification of type %u to client.\n",
1889 client, ntohs (msg->type));
1891 uint16_t msg_size = ntohs (msg->size);
1892 struct AppPlaceMessage amsg;
1893 amsg.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE);
1894 amsg.header.size = htons (sizeof (amsg));
1895 // FIXME: also notify about not entered places
1896 amsg.place_state = GNUNET_SOCIAL_PLACE_STATE_ENTERED;
1898 switch (ntohs (msg->type))
1900 case GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER:
1901 if (msg_size < sizeof (struct HostEnterRequest))
1903 struct HostEnterRequest *hreq = (struct HostEnterRequest *) msg;
1904 amsg.is_host = GNUNET_YES;
1905 amsg.ego_pub_key = hreq->ego_pub_key;
1906 amsg.place_pub_key = hreq->place_pub_key;
1909 case GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER:
1910 if (msg_size < sizeof (struct GuestEnterRequest))
1912 struct GuestEnterRequest *greq = (struct GuestEnterRequest *) msg;
1913 amsg.is_host = GNUNET_NO;
1914 amsg.ego_pub_key = greq->ego_pub_key;
1915 amsg.place_pub_key = greq->place_pub_key;
1922 client_send_msg (client, &amsg.header);
1927 app_notify_place_end (struct GNUNET_SERVER_Client *client)
1929 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1930 "%p Sending end of place list notification to client\n",
1933 struct GNUNET_MessageHeader msg;
1934 msg.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE_END);
1935 msg.size = htons (sizeof (msg));
1937 client_send_msg (client, &msg);
1942 app_notify_ego (struct Ego *ego, struct GNUNET_SERVER_Client *client)
1944 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1945 "%p Sending ego notification to client: %s\n",
1948 size_t name_size = strlen (ego->name) + 1;
1949 struct AppEgoMessage *emsg = GNUNET_malloc (sizeof (*emsg) + name_size);
1950 emsg->header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO);
1951 emsg->header.size = htons (sizeof (*emsg) + name_size);
1953 GNUNET_CRYPTO_ecdsa_key_get_public (&ego->key, &emsg->ego_pub_key);
1954 memcpy (&emsg[1], ego->name, name_size);
1956 client_send_msg (client, &emsg->header);
1962 app_notify_ego_end (struct GNUNET_SERVER_Client *client)
1964 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1965 "%p Sending end of ego list notification to client\n",
1968 struct GNUNET_MessageHeader msg;
1969 msg.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO_END);
1970 msg.size = htons (sizeof (msg));
1972 client_send_msg (client, &msg);
1977 app_place_entry_notify (void *cls, const struct GNUNET_HashCode *key, void *value)
1979 struct GNUNET_MessageHeader *
1980 msg = GNUNET_CONTAINER_multihashmap_get (places, key);
1982 app_notify_place (msg, cls);
1988 ego_entry (void *cls, const struct GNUNET_HashCode *key, void *value)
1990 app_notify_ego (value, cls);
1996 * Handle application connection.
1999 client_recv_app_connect (void *cls, struct GNUNET_SERVER_Client *client,
2000 const struct GNUNET_MessageHeader *msg)
2002 const struct AppConnectRequest *creq
2003 = (const struct AppConnectRequest *) msg;
2005 uint8_t app_id_size = ntohs (creq->header.size) - sizeof (*creq);
2006 const char *app_id = NULL;
2007 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &creq[1],
2008 app_id_size, 1, &app_id);
2009 if (0 == offset || offset != app_id_size)
2012 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2016 struct GNUNET_HashCode app_id_hash;
2017 GNUNET_CRYPTO_hash (app_id, app_id_size, &app_id_hash);
2019 GNUNET_CONTAINER_multihashmap_iterate (egos, ego_entry, client);
2020 app_notify_ego_end (client);
2022 struct GNUNET_CONTAINER_MultiHashMap *
2023 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
2024 if (NULL != app_places)
2025 GNUNET_CONTAINER_multihashmap_iterate (app_places, app_place_entry_notify, client);
2026 app_notify_place_end (client);
2028 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
2029 cli->client = client;
2030 struct Application *app = GNUNET_CONTAINER_multihashmap_get (apps,
2033 app = GNUNET_malloc (sizeof (*app));
2034 (void) GNUNET_CONTAINER_multihashmap_put (apps, &app_id_hash, app,
2035 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
2037 GNUNET_CONTAINER_DLL_insert (app->clients_head, app->clients_tail, cli);
2039 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2040 "%p Application %s connected.\n", app, app_id);
2042 struct Client *ctx = GNUNET_new (struct Client);
2043 ctx->app_id = GNUNET_malloc (app_id_size);
2044 memcpy (ctx->app_id, app_id, app_id_size);
2046 GNUNET_SERVER_client_set_user_context (client, ctx);
2047 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2052 * Handle application detach request.
2055 client_recv_app_detach (void *cls, struct GNUNET_SERVER_Client *client,
2056 const struct GNUNET_MessageHeader *msg)
2059 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2060 GNUNET_assert (NULL != ctx);
2062 struct Place *plc = ctx->plc;
2064 const struct AppDetachRequest *req
2065 = (const struct AppDetachRequest *) msg;
2067 int ret = app_place_remove (ctx->app_id, &plc->ego_pub_key, &req->place_pub_key);
2068 client_send_result (client, req->op_id, ret, NULL, 0);
2070 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2075 app_places_entry_remove (void *cls, const struct GNUNET_HashCode *key, void *value)
2077 struct Place *plc = cls;
2078 const char *app_id = value;
2079 app_place_remove (app_id, &plc->ego_pub_key, &plc->pub_key);
2085 * Handle application detach request.
2088 client_recv_place_leave (void *cls, struct GNUNET_SERVER_Client *client,
2089 const struct GNUNET_MessageHeader *msg)
2092 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2093 GNUNET_assert (NULL != ctx);
2094 struct Place *plc = ctx->plc;
2096 /* FIXME: remove all app subscriptions and leave this place */
2098 struct GNUNET_CONTAINER_MultiHashMap *
2099 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &plc->pub_key_hash);
2100 if (NULL != place_apps)
2102 GNUNET_CONTAINER_multihashmap_iterate (place_apps, app_places_entry_remove, plc);
2105 /* FIXME: disconnect from the network, but keep local connection for history access */
2107 /* Disconnect all clients connected to the place */
2108 struct ClientListItem *cli = plc->clients_head, *next;
2111 GNUNET_CONTAINER_DLL_remove (plc->clients_head, plc->clients_tail, cli);
2112 GNUNET_SERVER_client_disconnect (cli->client);
2118 if (GNUNET_YES != plc->is_disconnected)
2120 plc->is_disconnected = GNUNET_YES;
2121 if (NULL != plc->tmit_msgs_head)
2122 { /* Send pending messages to PSYC before cleanup. */
2123 psyc_transmit_message (plc);
2127 cleanup_place (plc);
2133 struct JoinDecisionClosure
2135 int32_t is_admitted;
2136 struct GNUNET_PSYC_Message *msg;
2141 * Iterator callback for responding to join requests.
2144 psyc_send_join_decision (void *cls, const struct GNUNET_HashCode *pub_key_hash,
2147 struct JoinDecisionClosure *jcls = cls;
2148 struct GNUNET_PSYC_JoinHandle *jh = value;
2149 // FIXME: add relays
2150 GNUNET_PSYC_join_decision (jh, jcls->is_admitted, 0, NULL, jcls->msg);
2156 * Handle an entry decision from a host client.
2159 client_recv_join_decision (void *cls, struct GNUNET_SERVER_Client *client,
2160 const struct GNUNET_MessageHeader *msg)
2163 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2164 GNUNET_assert (NULL != ctx);
2165 struct Place *plc = ctx->plc;
2166 if (GNUNET_YES != plc->is_host) {
2168 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2171 struct Host *hst = (struct Host *) plc;
2173 struct GNUNET_PSYC_JoinDecisionMessage *
2174 dcsn = (struct GNUNET_PSYC_JoinDecisionMessage *) msg;
2175 struct JoinDecisionClosure jcls;
2176 jcls.is_admitted = ntohl (dcsn->is_admitted);
2178 = (sizeof (*dcsn) + sizeof (*jcls.msg) <= ntohs (msg->size))
2179 ? (struct GNUNET_PSYC_Message *) &dcsn[1]
2182 struct GNUNET_HashCode slave_pub_hash;
2183 GNUNET_CRYPTO_hash (&dcsn->slave_pub_key, sizeof (dcsn->slave_pub_key),
2186 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2187 "%p Got join decision (%d) from client for place %s..\n",
2188 hst, jcls.is_admitted, GNUNET_h2s (&plc->pub_key_hash));
2189 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2190 "%p ..and slave %s.\n",
2191 hst, GNUNET_h2s (&slave_pub_hash));
2193 GNUNET_CONTAINER_multihashmap_get_multiple (hst->join_reqs, &slave_pub_hash,
2194 &psyc_send_join_decision, &jcls);
2195 GNUNET_CONTAINER_multihashmap_remove_all (hst->join_reqs, &slave_pub_hash);
2196 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2201 * Send acknowledgement to a client.
2203 * Sent after a message fragment has been passed on to multicast.
2205 * @param plc The place struct for the client.
2208 send_message_ack (struct Place *plc, struct GNUNET_SERVER_Client *client)
2210 struct GNUNET_MessageHeader res;
2211 res.size = htons (sizeof (res));
2212 res.type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK);
2213 client_send_msg (client, &res);
2218 * Proceed to the next message part in the transmission queue.
2221 * Place where the transmission is going on.
2223 * Currently transmitted message.
2225 * Currently transmitted message fragment.
2227 * @return @a tmit_frag, or NULL if reached the end of fragment.
2229 static struct FragmentTransmitQueue *
2230 psyc_transmit_queue_next_part (struct Place *plc,
2231 struct MessageTransmitQueue *tmit_msg,
2232 struct FragmentTransmitQueue *tmit_frag)
2234 uint16_t psize = ntohs (tmit_frag->next_part->size);
2235 if ((char *) tmit_frag->next_part + psize - ((char *) &tmit_frag[1])
2238 tmit_frag->next_part
2239 = (struct GNUNET_MessageHeader *) ((char *) tmit_frag->next_part + psize);
2241 else /* Reached end of current fragment. */
2243 if (NULL != tmit_frag->client)
2244 send_message_ack (plc, tmit_frag->client);
2245 GNUNET_CONTAINER_DLL_remove (tmit_msg->frags_head, tmit_msg->frags_tail, tmit_frag);
2246 GNUNET_free (tmit_frag);
2254 * Proceed to next message in transmission queue.
2257 * Place where the transmission is going on.
2259 * Currently transmitted message.
2261 * @return The next message in queue, or NULL if queue is empty.
2263 static struct MessageTransmitQueue *
2264 psyc_transmit_queue_next_msg (struct Place *plc,
2265 struct MessageTransmitQueue *tmit_msg)
2267 GNUNET_CONTAINER_DLL_remove (plc->tmit_msgs_head, plc->tmit_msgs_tail, tmit_msg);
2268 GNUNET_free (tmit_msg);
2269 return plc->tmit_msgs_head;
2274 * Callback for data transmission to PSYC.
2277 psyc_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2279 struct Place *plc = cls;
2280 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2281 GNUNET_assert (NULL != tmit_msg);
2282 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2283 if (NULL == tmit_frag)
2284 { /* Rest of the message have not arrived yet, pause transmission */
2288 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2291 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2292 "%p psyc_transmit_notify_data: nothing to send.\n", plc);
2297 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2298 "%p psyc_transmit_notify_data()\n", plc);
2299 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, pmsg);
2301 uint16_t ptype = ntohs (pmsg->type);
2302 uint16_t pdata_size = ntohs (pmsg->size) - sizeof (*pmsg);
2307 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA:
2308 if (*data_size < pdata_size)
2310 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2311 "%p psyc_transmit_notify_data: buffer size too small for data.\n", plc);
2315 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2316 "%p psyc_transmit_notify_data: sending %u bytes.\n",
2319 *data_size = pdata_size;
2320 memcpy (data, &pmsg[1], *data_size);
2324 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2329 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2331 ret = GNUNET_SYSERR;
2335 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2336 "%p psyc_transmit_notify_data: unexpected message part of type %u.\n",
2338 ret = GNUNET_SYSERR;
2341 if (GNUNET_SYSERR == ret && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL != ptype)
2344 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2345 plc->is_disconnected = GNUNET_YES;
2346 GNUNET_SERVER_client_disconnect (tmit_frag->client);
2347 GNUNET_SCHEDULER_add_now (&cleanup_place, plc);
2352 tmit_frag = psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2353 if (NULL != tmit_frag)
2355 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2356 ptype = ntohs (pmsg->type);
2359 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2362 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2363 ret = GNUNET_SYSERR;
2368 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2369 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2370 tmit_frag = psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2374 if (NULL == tmit_msg->frags_head
2375 && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= ptype)
2376 { /* Reached end of current message. */
2377 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2381 if (ret != GNUNET_NO)
2383 if (NULL != tmit_msg)
2385 psyc_transmit_message (plc);
2387 else if (GNUNET_YES == plc->is_disconnected)
2389 /* FIXME: handle partial message (when still in_transmit) */
2390 cleanup_place (plc);
2398 * Callback for modifier transmission to PSYC.
2401 psyc_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2402 uint8_t *oper, uint32_t *full_value_size)
2404 struct Place *plc = cls;
2405 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2406 GNUNET_assert (NULL != tmit_msg);
2407 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2408 if (NULL == tmit_frag)
2409 { /* Rest of the message have not arrived yet, pause transmission */
2413 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2416 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2417 "%p psyc_transmit_notify_mod: nothing to send.\n", plc);
2422 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2423 "%p psyc_transmit_notify_mod()\n", plc);
2424 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, pmsg);
2426 uint16_t ptype = ntohs (pmsg->type);
2431 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MODIFIER:
2435 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2436 "%p psyc_transmit_notify_mod: oper is NULL.\n", plc);
2437 ret = GNUNET_SYSERR;
2440 struct GNUNET_PSYC_MessageModifier *
2441 pmod = (struct GNUNET_PSYC_MessageModifier *) tmit_frag->next_part;
2442 uint16_t mod_size = ntohs (pmod->header.size) - sizeof (*pmod);
2444 if (*data_size < mod_size)
2446 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2447 "%p psyc_transmit_notify_mod: buffer size too small for data.\n", plc);
2452 *full_value_size = ntohl (pmod->value_size);
2454 *data_size = mod_size;
2455 memcpy (data, &pmod[1], mod_size);
2460 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MOD_CONT:
2464 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2465 "%p psyc_transmit_notify_mod: oper is not NULL.\n", plc);
2466 ret = GNUNET_SYSERR;
2469 uint16_t mod_size = ntohs (pmsg->size) - sizeof (*pmsg);
2470 if (*data_size < mod_size)
2472 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2473 "%p psyc_transmit_notify_mod: buffer size too small for data.\n", plc);
2477 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2478 "%p psyc_transmit_notify_mod: sending %u bytes.\n", plc, mod_size);
2480 *data_size = mod_size;
2481 memcpy (data, &pmsg[1], *data_size);
2486 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA:
2487 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2488 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2494 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2495 "%p psyc_transmit_notify_mod: unexpected message part of type %u.\n",
2497 ret = GNUNET_SYSERR;
2500 if (GNUNET_SYSERR == ret)
2503 ret = GNUNET_SYSERR;
2504 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2505 plc->is_disconnected = GNUNET_YES;
2506 GNUNET_SERVER_client_disconnect (tmit_frag->client);
2507 GNUNET_SCHEDULER_add_now (&cleanup_place, plc);
2511 if (GNUNET_YES != ret)
2512 psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2514 if (NULL == tmit_msg->frags_head
2515 && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= ptype)
2516 { /* Reached end of current message. */
2517 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2524 * Callback for data transmission from a host to PSYC.
2527 host_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2529 int ret = psyc_transmit_notify_data (cls, data_size, data);
2531 if (GNUNET_NO != ret)
2533 struct Host *hst = cls;
2534 hst->tmit_handle = NULL;
2541 * Callback for the transmit functions of multicast.
2544 guest_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2546 int ret = psyc_transmit_notify_data (cls, data_size, data);
2548 if (GNUNET_NO != ret)
2550 struct Guest *gst = cls;
2551 gst->tmit_handle = NULL;
2558 * Callback for modifier transmission from a host to PSYC.
2561 host_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2562 uint8_t *oper, uint32_t *full_value_size)
2564 int ret = psyc_transmit_notify_mod (cls, data_size, data,
2565 oper, full_value_size);
2566 if (GNUNET_SYSERR == ret)
2568 struct Host *hst = cls;
2569 hst->tmit_handle = NULL;
2576 * Callback for modifier transmission from a guest to PSYC.
2579 guest_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2580 uint8_t *oper, uint32_t *full_value_size)
2582 int ret = psyc_transmit_notify_mod (cls, data_size, data,
2583 oper, full_value_size);
2584 if (GNUNET_SYSERR == ret)
2586 struct Guest *gst = cls;
2587 gst->tmit_handle = NULL;
2594 * Get method part of next message from transmission queue.
2597 * Next item in message transmission queue.
2599 * The malloc'd message method is returned here.
2601 * @return #GNUNET_OK on success
2602 * #GNUNET_NO if there are no more messages in queue.
2603 * #GNUNET_SYSERR if the next message is malformed.
2605 static struct GNUNET_PSYC_MessageMethod *
2606 psyc_transmit_queue_next_method (struct Place *plc)
2608 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2609 if (NULL == tmit_msg)
2612 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2613 if (NULL == tmit_frag)
2619 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2621 || GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD != ntohs (pmsg->type))
2623 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2624 "%p psyc_transmit_queue_next_method: unexpected message part of type %u.\n",
2625 plc, NULL != pmsg ? ntohs (pmsg->type) : 0);
2630 uint16_t psize = ntohs (pmsg->size);
2631 struct GNUNET_PSYC_MessageMethod *
2632 pmeth = (struct GNUNET_PSYC_MessageMethod *) GNUNET_copy_message (pmsg);
2634 if (psize < sizeof (*pmeth) + 1 || '\0' != *((char *) pmeth + psize - 1))
2636 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2637 "%p psyc_transmit_queue_next_method: invalid method name.\n",
2639 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2640 "%zu <= %u || NUL != %u\n",
2641 sizeof (*pmeth), psize, *((char *) pmeth + psize - 1));
2643 GNUNET_free (pmeth);
2647 psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2653 * Transmit the next message in queue from the host to the PSYC channel.
2656 psyc_master_transmit_message (struct Host *hst)
2658 struct Place *plc = &hst->plc;
2660 if (NULL == hst->tmit_handle)
2662 struct GNUNET_PSYC_MessageMethod *
2663 pmeth = psyc_transmit_queue_next_method (plc);
2665 return GNUNET_SYSERR;
2667 hst->tmit_handle = (void *) &hst->tmit_handle;
2668 struct GNUNET_PSYC_MasterTransmitHandle *
2669 tmit_handle = GNUNET_PSYC_master_transmit (hst->master, (const char *) &pmeth[1],
2670 &host_transmit_notify_mod,
2671 &host_transmit_notify_data, hst,
2673 if (NULL != hst->tmit_handle)
2674 hst->tmit_handle = tmit_handle;
2675 GNUNET_free (pmeth);
2679 GNUNET_PSYC_master_transmit_resume (hst->tmit_handle);
2686 * Transmit the next message in queue from a guest to the PSYC channel.
2689 psyc_slave_transmit_message (struct Guest *gst)
2691 struct Place *plc = &gst->plc;
2693 if (NULL == gst->tmit_handle)
2695 struct GNUNET_PSYC_MessageMethod *
2696 pmeth = psyc_transmit_queue_next_method (plc);
2698 return GNUNET_SYSERR;
2700 gst->tmit_handle = (void *) &gst->tmit_handle;
2701 struct GNUNET_PSYC_SlaveTransmitHandle *
2702 tmit_handle = GNUNET_PSYC_slave_transmit (gst->slave, (const char *) &pmeth[1],
2703 &guest_transmit_notify_mod,
2704 &guest_transmit_notify_data, gst,
2706 if (NULL != gst->tmit_handle)
2707 gst->tmit_handle = tmit_handle;
2708 GNUNET_free (pmeth);
2712 GNUNET_PSYC_slave_transmit_resume (gst->tmit_handle);
2719 * Transmit a message to PSYC.
2722 psyc_transmit_message (struct Place *plc)
2726 ? psyc_master_transmit_message ((struct Host *) plc)
2727 : psyc_slave_transmit_message ((struct Guest *) plc);
2732 * Queue message parts for sending to PSYC.
2734 * @param plc Place to send to.
2735 * @param client Client the message originates from.
2736 * @param data_size Size of @a data.
2737 * @param data Concatenated message parts.
2738 * @param first_ptype First message part type in @a data.
2739 * @param last_ptype Last message part type in @a data.
2741 static struct MessageTransmitQueue *
2742 psyc_transmit_queue_message (struct Place *plc,
2743 struct GNUNET_SERVER_Client *client,
2746 uint16_t first_ptype, uint16_t last_ptype,
2747 struct MessageTransmitQueue *tmit_msg)
2749 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD == first_ptype)
2751 tmit_msg = GNUNET_malloc (sizeof (*tmit_msg));
2752 GNUNET_CONTAINER_DLL_insert_tail (plc->tmit_msgs_head, plc->tmit_msgs_tail, tmit_msg);
2754 else if (NULL == tmit_msg)
2759 struct FragmentTransmitQueue *
2760 tmit_frag = GNUNET_malloc (sizeof (*tmit_frag) + data_size);
2761 memcpy (&tmit_frag[1], data, data_size);
2762 tmit_frag->next_part = (struct GNUNET_MessageHeader *) &tmit_frag[1];
2763 tmit_frag->client = client;
2764 tmit_frag->size = data_size;
2766 GNUNET_CONTAINER_DLL_insert_tail (tmit_msg->frags_head, tmit_msg->frags_tail, tmit_frag);
2767 tmit_msg->client = client;
2773 * Cancel transmission of current message to PSYC.
2775 * @param plc Place to send to.
2776 * @param client Client the message originates from.
2779 psyc_transmit_cancel (struct Place *plc, struct GNUNET_SERVER_Client *client)
2781 uint16_t type = GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL;
2783 struct GNUNET_MessageHeader msg;
2784 msg.size = htons (sizeof (msg));
2785 msg.type = htons (type);
2787 psyc_transmit_queue_message (plc, client, sizeof (msg), &msg, type, type, NULL);
2788 psyc_transmit_message (plc);
2790 /* FIXME: cleanup */
2795 * Handle an incoming message from a client, to be transmitted to the place.
2798 client_recv_psyc_message (void *cls, struct GNUNET_SERVER_Client *client,
2799 const struct GNUNET_MessageHeader *msg)
2802 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2803 GNUNET_assert (NULL != ctx);
2804 struct Place *plc = ctx->plc;
2805 int ret = GNUNET_SYSERR;
2807 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2808 "%p Received message from client.\n", plc);
2809 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, msg);
2811 if (GNUNET_YES != plc->is_ready)
2813 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2814 "%p Place is not ready yet, disconnecting client.\n", plc);
2816 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2820 uint16_t size = ntohs (msg->size);
2821 uint16_t psize = size - sizeof (*msg);
2822 if (psize < sizeof (struct GNUNET_MessageHeader)
2823 || GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD < psize)
2825 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2826 "%p Received message with invalid payload size (%u) from client.\n",
2829 psyc_transmit_cancel (plc, client);
2830 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2834 uint16_t first_ptype = 0, last_ptype = 0;
2836 == GNUNET_PSYC_receive_check_parts (psize, (const char *) &msg[1],
2837 &first_ptype, &last_ptype))
2839 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2840 "%p Received invalid message part from client.\n", plc);
2842 psyc_transmit_cancel (plc, client);
2843 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2846 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2847 "%p Received message with first part type %u and last part type %u.\n",
2848 plc, first_ptype, last_ptype);
2851 = psyc_transmit_queue_message (plc, client, psize, &msg[1],
2852 first_ptype, last_ptype, ctx->tmit_msg);
2853 if (NULL != ctx->tmit_msg)
2855 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= last_ptype)
2856 ctx->tmit_msg = NULL;
2857 ret = psyc_transmit_message (plc);
2860 if (GNUNET_OK != ret)
2862 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2863 "%p Received invalid message part from client.\n", plc);
2865 psyc_transmit_cancel (plc, client);
2866 ret = GNUNET_SYSERR;
2868 GNUNET_SERVER_receive_done (client, ret);
2873 * A historic message arrived from PSYC.
2876 psyc_recv_history_message (void *cls, const struct GNUNET_PSYC_MessageHeader *msg)
2878 struct OperationClosure *opcls = cls;
2879 struct Place *plc = opcls->plc;
2881 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2882 "%p Received historic message #%" PRId64 " (flags: %x)\n",
2883 plc, GNUNET_ntohll (msg->message_id), ntohl (msg->flags));
2885 uint16_t size = ntohs (msg->header.size);
2887 struct GNUNET_OperationResultMessage *
2888 res = GNUNET_malloc (sizeof (*res) + size);
2889 res->header.size = htons (sizeof (*res) + size);
2890 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT);
2891 res->op_id = opcls->op_id;
2892 res->result_code = GNUNET_htonll (GNUNET_OK);
2894 memcpy (&res[1], msg, size);
2896 /** @todo FIXME: send only to requesting client */
2897 place_send_msg (plc, &res->header);
2902 * Result of message history replay from PSYC.
2905 psyc_recv_history_result (void *cls, int64_t result,
2906 const void *err_msg, uint16_t err_msg_size)
2908 struct OperationClosure *opcls = cls;
2909 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2910 "%p History replay #%" PRIu64 ": "
2911 "PSYCstore returned %" PRId64 " (%.*s)\n",
2912 opcls->plc, GNUNET_ntohll (opcls->op_id), result,
2913 err_msg_size, (const char *) err_msg);
2915 // FIXME: place might have been destroyed
2916 client_send_result (opcls->client, opcls->op_id, result, err_msg, err_msg_size);
2921 * Client requests channel history.
2924 client_recv_history_replay (void *cls, struct GNUNET_SERVER_Client *client,
2925 const struct GNUNET_MessageHeader *msg)
2928 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2929 GNUNET_assert (NULL != ctx);
2930 struct Place *plc = ctx->plc;
2932 const struct GNUNET_PSYC_HistoryRequestMessage *
2933 req = (const struct GNUNET_PSYC_HistoryRequestMessage *) msg;
2934 uint16_t size = ntohs (msg->size);
2935 const char *method_prefix = (const char *) &req[1];
2937 if (size < sizeof (*req) + 1
2938 || '\0' != method_prefix[size - sizeof (*req) - 1])
2940 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2941 "%p History replay #%" PRIu64 ": "
2942 "invalid method prefix. size: %u < %zu?\n",
2943 plc, GNUNET_ntohll (req->op_id), size, sizeof (*req) + 1);
2945 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2949 struct OperationClosure *opcls = GNUNET_malloc (sizeof (*opcls));
2950 opcls->client = client;
2952 opcls->op_id = req->op_id;
2953 opcls->flags = ntohl (req->flags);
2955 if (0 == req->message_limit)
2956 GNUNET_PSYC_channel_history_replay (plc->channel,
2957 GNUNET_ntohll (req->start_message_id),
2958 GNUNET_ntohll (req->end_message_id),
2959 method_prefix, opcls->flags,
2960 psyc_recv_history_message, NULL,
2961 psyc_recv_history_result, opcls);
2963 GNUNET_PSYC_channel_history_replay_latest (plc->channel,
2964 GNUNET_ntohll (req->message_limit),
2965 method_prefix, opcls->flags,
2966 psyc_recv_history_message, NULL,
2967 psyc_recv_history_result, opcls);
2969 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2974 * A state variable part arrived from PSYC.
2977 psyc_recv_state_var (void *cls,
2978 const struct GNUNET_MessageHeader *mod,
2981 uint32_t value_size,
2982 uint32_t full_value_size)
2984 struct OperationClosure *opcls = cls;
2985 struct Place *plc = opcls->plc;
2987 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2988 "%p Received state variable %s from PSYC\n",
2991 uint16_t size = ntohs (mod->size);
2993 struct GNUNET_OperationResultMessage *
2994 res = GNUNET_malloc (sizeof (*res) + size);
2995 res->header.size = htons (sizeof (*res) + size);
2996 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT);
2997 res->op_id = opcls->op_id;
2998 res->result_code = GNUNET_htonll (GNUNET_OK);
3000 memcpy (&res[1], mod, size);
3002 /** @todo FIXME: send only to requesting client */
3003 place_send_msg (plc, &res->header);
3008 * Result of retrieving state variable from PSYC.
3011 psyc_recv_state_result (void *cls, int64_t result,
3012 const void *err_msg, uint16_t err_msg_size)
3014 struct OperationClosure *opcls = cls;
3015 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3016 "%p State get #%" PRIu64 ": "
3017 "PSYCstore returned %" PRId64 " (%.*s)\n",
3018 opcls->plc, GNUNET_ntohll (opcls->op_id), result,
3019 err_msg_size, (const char *) err_msg);
3021 // FIXME: place might have been destroyed
3022 client_send_result (opcls->client, opcls->op_id, result, err_msg, err_msg_size);
3027 * Client requests channel history.
3030 client_recv_state_get (void *cls, struct GNUNET_SERVER_Client *client,
3031 const struct GNUNET_MessageHeader *msg)
3034 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
3035 GNUNET_assert (NULL != ctx);
3036 struct Place *plc = ctx->plc;
3038 const struct GNUNET_PSYC_StateRequestMessage *
3039 req = (const struct GNUNET_PSYC_StateRequestMessage *) msg;
3040 uint16_t size = ntohs (msg->size);
3041 const char *name = (const char *) &req[1];
3043 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3044 "%p State get #%" PRIu64 ": %s\n",
3045 plc, GNUNET_ntohll (req->op_id), name);
3047 if (size < sizeof (*req) + 1
3048 || '\0' != name[size - sizeof (*req) - 1])
3050 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3051 "%p State get #%" PRIu64 ": "
3052 "invalid name. size: %u < %zu?\n",
3053 plc, GNUNET_ntohll (req->op_id), size, sizeof (*req) + 1);
3055 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
3059 struct OperationClosure *opcls = GNUNET_malloc (sizeof (*opcls));
3060 opcls->client = client;
3062 opcls->op_id = req->op_id;
3064 switch (ntohs (msg->type))
3066 case GNUNET_MESSAGE_TYPE_PSYC_STATE_GET:
3067 GNUNET_PSYC_channel_state_get (plc->channel, name,
3068 psyc_recv_state_var,
3069 psyc_recv_state_result, opcls);
3072 case GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX:
3073 GNUNET_PSYC_channel_state_get_prefix (plc->channel, name,
3074 psyc_recv_state_var,
3075 psyc_recv_state_result, opcls);
3082 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3087 namestore_recv_records_store_result (void *cls, int32_t result,
3088 const char *err_msg)
3090 struct OperationClosure *ocls = cls;
3091 client_send_result (ocls->client, ocls->op_id, result, err_msg,
3092 (NULL != err_msg) ? strlen (err_msg) : 0);
3098 * Handle request to add PLACE record to GNS zone.
3101 client_recv_zone_add_place (void *cls, struct GNUNET_SERVER_Client *client,
3102 const struct GNUNET_MessageHeader *msg)
3104 const struct ZoneAddPlaceRequest *preq
3105 = (const struct ZoneAddPlaceRequest *) msg;
3107 uint16_t remaining = ntohs (preq->header.size) - sizeof (*preq);
3108 const char *p = (const char *) &preq[1];
3109 const char *name = NULL, *password = NULL;
3110 uint16_t offset = GNUNET_STRINGS_buffer_tokenize (p, remaining, 2,
3112 remaining -= offset;
3114 const struct GNUNET_PeerIdentity *
3115 relays = (const struct GNUNET_PeerIdentity *) p;
3116 uint16_t relay_size = ntohl (preq->relay_count) * sizeof (*relays);
3118 if (0 == offset || remaining != relay_size)
3121 client_send_result (client, preq->op_id, GNUNET_SYSERR, NULL, 0);
3122 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3126 struct GNUNET_GNSRECORD_Data rd = { };
3127 rd.record_type = GNUNET_GNSRECORD_TYPE_PLACE;
3128 rd.flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
3129 rd.expiration_time = GNUNET_ntohll (preq->expiration_time);
3131 struct GNUNET_GNSRECORD_PlaceData *
3132 rec = GNUNET_malloc (sizeof (*rec) + relay_size);
3133 rec->place_pub_key = preq->place_pub_key;
3134 rec->origin = this_peer;
3135 rec->relay_count = preq->relay_count;
3136 memcpy (&rec[1], relays, relay_size);
3139 rd.data_size = sizeof (*rec) + relay_size;
3141 struct GNUNET_HashCode ego_pub_hash;
3142 GNUNET_CRYPTO_hash (&preq->ego_pub_key, sizeof (preq->ego_pub_key), &ego_pub_hash);
3143 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3146 client_send_result (client, preq->op_id, GNUNET_SYSERR, NULL, 0);
3150 struct OperationClosure *ocls = GNUNET_malloc (sizeof (*ocls));
3151 ocls->client = client;
3152 ocls->op_id = preq->op_id;
3153 GNUNET_NAMESTORE_records_store (namestore, &ego->key,
3155 namestore_recv_records_store_result, ocls);
3156 /** @todo refresh stored records later */
3158 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3163 * Handle request to add PLACE record to GNS zone.
3166 client_recv_zone_add_nym (void *cls, struct GNUNET_SERVER_Client *client,
3167 const struct GNUNET_MessageHeader *msg)
3169 const struct ZoneAddNymRequest *nreq
3170 = (const struct ZoneAddNymRequest *) msg;
3172 uint16_t name_size = ntohs (nreq->header.size) - sizeof (*nreq);
3173 const char *name = NULL;
3174 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &nreq[1],
3175 name_size, 1, &name);
3176 if (0 == offset || offset != name_size)
3179 client_send_result (client, nreq->op_id, GNUNET_SYSERR, NULL, 0);
3180 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3184 struct GNUNET_GNSRECORD_Data rd = { };
3185 rd.record_type = GNUNET_GNSRECORD_TYPE_PKEY;
3186 rd.flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
3187 rd.expiration_time = GNUNET_ntohll (nreq->expiration_time);
3188 rd.data = &nreq->nym_pub_key;
3189 rd.data_size = sizeof (nreq->nym_pub_key);
3191 struct GNUNET_HashCode ego_pub_hash;
3192 GNUNET_CRYPTO_hash (&nreq->ego_pub_key, sizeof (nreq->ego_pub_key), &ego_pub_hash);
3193 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3196 client_send_result (client, nreq->op_id, GNUNET_SYSERR, NULL, 0);
3200 struct OperationClosure *ocls = GNUNET_malloc (sizeof (*ocls));
3201 ocls->client = client;
3202 ocls->op_id = nreq->op_id;
3203 GNUNET_NAMESTORE_records_store (namestore, &ego->key,
3205 namestore_recv_records_store_result, ocls);
3206 /** @todo refresh stored records later */
3208 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3212 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
3213 { client_recv_host_enter, NULL,
3214 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER, 0 },
3216 { client_recv_guest_enter, NULL,
3217 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER, 0 },
3219 { client_recv_guest_enter_by_name, NULL,
3220 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_BY_NAME, 0 },
3222 { client_recv_join_decision, NULL,
3223 GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION, 0 },
3225 { client_recv_psyc_message, NULL,
3226 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE, 0 },
3228 { client_recv_history_replay, NULL,
3229 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_REPLAY, 0 },
3231 { client_recv_state_get, NULL,
3232 GNUNET_MESSAGE_TYPE_PSYC_STATE_GET, 0 },
3234 { client_recv_state_get, NULL,
3235 GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX, 0 },
3237 { client_recv_zone_add_place, NULL,
3238 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_PLACE, 0 },
3240 { client_recv_zone_add_nym, NULL,
3241 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_NYM, 0 },
3243 { client_recv_app_connect, NULL,
3244 GNUNET_MESSAGE_TYPE_SOCIAL_APP_CONNECT, 0 },
3246 { client_recv_app_detach, NULL,
3247 GNUNET_MESSAGE_TYPE_SOCIAL_APP_DETACH, 0 },
3249 { client_recv_place_leave, NULL,
3250 GNUNET_MESSAGE_TYPE_SOCIAL_PLACE_LEAVE, 0 },
3252 { client_recv_msg_proc_set, NULL,
3253 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_SET, 0 },
3255 { client_recv_msg_proc_clear, NULL,
3256 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_CLEAR, 0 },
3258 { NULL, NULL, 0, 0 }
3263 path_basename (const char *path)
3265 const char *basename = strrchr (path, DIR_SEPARATOR);
3266 if (NULL != basename)
3269 if (NULL == basename || '\0' == basename)
3276 struct PlaceLoadClosure
3279 const char *ego_pub_str;
3283 /** Load a place file */
3285 file_place_load (void *cls, const char *place_filename)
3287 struct PlaceLoadClosure *plcls = cls;
3289 const char *place_pub_str = path_basename (place_filename);
3290 if (NULL == place_pub_str)
3296 char *filename = NULL;
3297 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s",
3298 dir_social, DIR_SEPARATOR,
3299 "places", DIR_SEPARATOR,
3300 plcls->ego_pub_str, DIR_SEPARATOR,
3303 uint64_t file_size = 0;
3305 GNUNET_DISK_file_size (filename, &file_size, GNUNET_YES, GNUNET_YES)
3306 || file_size < sizeof (struct PlaceEnterRequest))
3309 struct PlaceEnterRequest *ereq = GNUNET_malloc (file_size);
3310 ssize_t read_size = GNUNET_DISK_fn_read (filename, ereq, file_size);
3311 if (read_size < 0 || read_size < sizeof (*ereq))
3317 uint16_t ereq_size = ntohs (ereq->header.size);
3318 if (read_size != ereq_size)
3324 switch (ntohs (ereq->header.type))
3326 case GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER:
3327 if (ereq_size < sizeof (struct HostEnterRequest))
3332 struct HostEnterRequest *hreq = (struct HostEnterRequest *) ereq;
3333 host_enter (hreq, NULL);
3336 case GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER:
3337 if (ereq_size < sizeof (struct GuestEnterRequest))
3342 struct GuestEnterRequest *greq = (struct GuestEnterRequest *) ereq;
3343 guest_enter (greq, NULL);
3351 app_place_add (plcls->app_id, ereq);
3358 * Read @e place_pub_str entries in @a dir_ego
3361 * Data directory of an application ego.
3362 * $GNUNET_DATA_HOME/social/apps/$app_id/$ego_pub_str/
3365 scan_app_ego_dir (void *cls, const char *dir_ego)
3367 struct PlaceLoadClosure *plcls = cls;
3368 plcls->ego_pub_str = path_basename (dir_ego);
3370 if (NULL != plcls->ego_pub_str)
3371 GNUNET_DISK_directory_scan (dir_ego, file_place_load, plcls);
3377 * Read @e ego_pub_str entries in @a dir_app
3380 * Data directory of an application.
3381 * $GNUNET_DATA_HOME/social/apps/$app_id/
3384 scan_app_dir (void *cls, const char *dir_app)
3386 if (GNUNET_YES != GNUNET_DISK_directory_test (dir_app, GNUNET_YES))
3389 struct PlaceLoadClosure plcls;
3390 plcls.app_id = path_basename (dir_app);
3392 if (NULL != plcls.app_id)
3393 GNUNET_DISK_directory_scan (dir_app, scan_app_ego_dir, &plcls);
3400 identity_recv_ego (void *cls, struct GNUNET_IDENTITY_Ego *id_ego,
3401 void **ctx, const char *name)
3403 if (NULL == id_ego) // end of initial list of egos
3406 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
3407 GNUNET_IDENTITY_ego_get_public_key (id_ego, &ego_pub_key);
3409 struct GNUNET_HashCode ego_pub_hash;
3410 GNUNET_CRYPTO_hash (&ego_pub_key, sizeof (ego_pub_key), &ego_pub_hash);
3412 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3415 GNUNET_free (ego->name);
3416 if (NULL == name) // deleted
3418 GNUNET_CONTAINER_multihashmap_remove (egos, &ego_pub_hash, ego);
3425 ego = GNUNET_malloc (sizeof (*ego));
3429 ego->key = *(GNUNET_IDENTITY_ego_get_private_key (id_ego));
3430 size_t name_size = strlen (name) + 1;
3431 ego->name = GNUNET_malloc (name_size);
3432 memcpy (ego->name, name, name_size);
3434 GNUNET_CONTAINER_multihashmap_put (egos, &ego_pub_hash, ego,
3435 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
3438 // FIXME: notify clients about changed ego
3443 * Connected to core service.
3446 core_connected (void *cls, const struct GNUNET_PeerIdentity *my_identity)
3448 this_peer = *my_identity;
3453 * Initialize the PSYC service.
3455 * @param cls Closure.
3456 * @param server The initialized server.
3457 * @param c Configuration to use.
3460 run (void *cls, struct GNUNET_SERVER_Handle *server,
3461 const struct GNUNET_CONFIGURATION_Handle *c)
3465 hosts = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
3466 guests = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
3467 place_guests = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3469 egos = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3470 apps = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3471 places = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3472 apps_places = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3473 places_apps = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3475 core = GNUNET_CORE_connect (cfg, NULL, core_connected, NULL, NULL,
3476 NULL, GNUNET_NO, NULL, GNUNET_NO, NULL);
3477 id = GNUNET_IDENTITY_connect (cfg, &identity_recv_ego, NULL);
3478 gns = GNUNET_GNS_connect (cfg);
3479 namestore = GNUNET_NAMESTORE_connect (cfg);
3480 stats = GNUNET_STATISTICS_create ("social", cfg);
3483 GNUNET_CONFIGURATION_get_value_filename (cfg, "social", "DATA_HOME",
3486 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
3487 "social", "DATA_HOME");
3491 GNUNET_asprintf (&dir_places, "%s%c%s",
3492 dir_social, DIR_SEPARATOR, "places");
3493 GNUNET_asprintf (&dir_apps, "%s%c%s",
3494 dir_social, DIR_SEPARATOR, "apps");
3496 GNUNET_DISK_directory_scan (dir_apps, scan_app_dir, NULL);
3498 nc = GNUNET_SERVER_notification_context_create (server, 1);
3499 GNUNET_SERVER_add_handlers (server, handlers);
3500 GNUNET_SERVER_disconnect_notify (server, &client_disconnect, NULL);
3501 GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
3506 * The main function for the service.
3508 * @param argc number of arguments from the command line
3509 * @param argv command line arguments
3510 * @return 0 ok, 1 on error
3513 main (int argc, char *const *argv)
3515 return (GNUNET_OK ==
3516 GNUNET_SERVICE_run (argc, argv, "social",
3517 GNUNET_SERVICE_OPTION_NONE,
3518 &run, NULL)) ? 0 : 1;
3521 /* end of gnunet-service-social.c */