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 GNUNET_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);
994 if (plc->file_offset != GNUNET_DISK_file_seek
995 (fh, plc->file_offset, GNUNET_DISK_SEEK_SET)) {
996 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "seek", filename);
997 GNUNET_free (filename);
1000 GNUNET_DISK_file_write (fh, data, data_size);
1001 GNUNET_DISK_file_close (fh);
1002 GNUNET_free (filename);
1006 GNUNET_free (filename);
1009 plc->file_offset += data_size;
1014 * Received end of message to be saved to disk.
1016 * Remove .part ending from the filename.
1019 place_recv_save_eom (void *cls,
1020 const struct GNUNET_PSYC_MessageHeader *msg,
1021 const struct GNUNET_MessageHeader *pmsg,
1022 uint64_t message_id,
1023 uint8_t is_cancelled)
1025 struct Place *plc = cls;
1026 if (GNUNET_YES != plc->file_save)
1029 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&plc->pub_key);
1031 GNUNET_asprintf (&fn, "%s%c%s%c%s%c%" PRIu64,
1032 dir_social, DIR_SEPARATOR,
1033 "files", DIR_SEPARATOR,
1034 place_pub_str, DIR_SEPARATOR,
1035 GNUNET_ntohll (msg->message_id));
1036 GNUNET_free (place_pub_str);
1037 char *fn_part = NULL;
1038 GNUNET_asprintf (&fn_part, "%s.part", fn);
1040 if (rename (fn_part, fn)) {
1041 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1042 "Failed to rename %s into %s: %s (%d)\n",
1043 fn_part, fn, strerror (errno), errno);
1047 GNUNET_free (fn_part);
1052 * Initialize place data structure.
1055 place_init (struct Place *plc)
1057 plc->slicer = GNUNET_PSYC_slicer_create ();
1062 * Add a place to the @e places hash map.
1067 * @return #GNUNET_OK if the place was added
1068 * #GNUNET_NO if the place already exists in the hash map
1069 * #GNUNET_SYSERR on error
1072 place_add (const struct PlaceEnterRequest *ereq)
1074 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1075 "Adding place to hashmap:\n");
1077 struct EgoPlacePublicKey ego_place_pub_key = {
1078 .ego_pub_key = ereq->ego_pub_key,
1079 .place_pub_key = ereq->place_pub_key,
1081 struct GNUNET_HashCode ego_place_pub_hash;
1082 GNUNET_CRYPTO_hash (&ego_place_pub_key, sizeof (ego_place_pub_key), &ego_place_pub_hash);
1084 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1085 " ego_place_pub_hash = %s\n", GNUNET_h2s (&ego_place_pub_hash));
1087 struct GNUNET_MessageHeader *
1088 place_msg = GNUNET_CONTAINER_multihashmap_get (places, &ego_place_pub_hash);
1089 if (NULL != place_msg)
1092 place_msg = GNUNET_copy_message (&ereq->header);
1093 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (places, &ego_place_pub_hash, place_msg,
1094 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1097 GNUNET_free (place_msg);
1098 return GNUNET_SYSERR;
1105 * Add a place to the @e app_places hash map.
1112 * @return #GNUNET_OK if the place was added
1113 * #GNUNET_NO if the place already exists in the hash map
1114 * #GNUNET_SYSERR on error
1117 app_place_add (const char *app_id,
1118 const struct PlaceEnterRequest *ereq)
1120 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1121 "Adding app place to hashmap:\n");
1122 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1123 " app_id = %s\n", app_id);
1125 struct GNUNET_HashCode app_id_hash;
1126 GNUNET_CRYPTO_hash (app_id, strlen (app_id) + 1, &app_id_hash);
1128 struct EgoPlacePublicKey ego_place_pub_key = {
1129 .ego_pub_key = ereq->ego_pub_key,
1130 .place_pub_key = ereq->place_pub_key,
1132 struct GNUNET_HashCode ego_place_pub_hash;
1133 GNUNET_CRYPTO_hash (&ego_place_pub_key, sizeof (ego_place_pub_key), &ego_place_pub_hash);
1135 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1136 " ego_place_pub_hash = %s\n", GNUNET_h2s (&ego_place_pub_hash));
1138 struct GNUNET_CONTAINER_MultiHashMap *
1139 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
1140 if (NULL == app_places)
1142 app_places = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1143 GNUNET_CONTAINER_multihashmap_put (apps_places, &app_id_hash, app_places,
1144 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1147 if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (app_places, &ego_place_pub_hash))
1150 if (GNUNET_SYSERR == place_add (ereq))
1151 return GNUNET_SYSERR;
1153 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (app_places, &ego_place_pub_hash, NULL,
1154 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1157 return GNUNET_SYSERR;
1160 struct GNUNET_HashCode place_pub_hash;
1161 GNUNET_CRYPTO_hash (&ereq->place_pub_key, sizeof (ereq->place_pub_key), &place_pub_hash);
1163 struct GNUNET_CONTAINER_MultiHashMap *
1164 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &place_pub_hash);
1165 if (NULL == place_apps)
1167 place_apps = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1168 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (places_apps, &place_pub_hash, place_apps,
1169 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1175 size_t app_id_size = strlen (app_id) + 1;
1176 void *app_id_value = GNUNET_malloc (app_id_size);
1177 GNUNET_memcpy (app_id_value, app_id, app_id_size);
1179 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (place_apps, &app_id_hash, app_id_value,
1180 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY))
1190 * Save place entry message to disk.
1195 * Entry request message.
1198 app_place_save (const char *app_id,
1199 const struct PlaceEnterRequest *ereq)
1201 app_place_add (app_id, ereq);
1203 if (NULL == dir_places)
1204 return GNUNET_SYSERR;
1206 char *ego_pub_str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&ereq->ego_pub_key);
1207 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&ereq->place_pub_key);
1208 char *filename = NULL;
1209 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s",
1210 dir_social, DIR_SEPARATOR,
1211 "places", DIR_SEPARATOR,
1212 ego_pub_str, DIR_SEPARATOR,
1214 int ret = GNUNET_DISK_directory_create_for_file (filename);
1215 if (GNUNET_OK != ret
1216 || 0 > GNUNET_DISK_fn_write (filename, ereq, ntohs (ereq->header.size),
1217 GNUNET_DISK_PERM_USER_READ
1218 | GNUNET_DISK_PERM_USER_WRITE))
1221 ret = GNUNET_SYSERR;
1223 GNUNET_free (filename);
1225 if (ret == GNUNET_OK)
1227 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s%c" "%s",
1228 dir_social, DIR_SEPARATOR,
1229 "apps", DIR_SEPARATOR,
1230 app_id, DIR_SEPARATOR,
1231 ego_pub_str, DIR_SEPARATOR,
1233 ret = GNUNET_DISK_directory_create_for_file (filename);
1234 if (GNUNET_OK != ret
1235 || 0 > GNUNET_DISK_fn_write (filename, "", 0,
1236 GNUNET_DISK_PERM_USER_READ
1237 | GNUNET_DISK_PERM_USER_WRITE))
1240 ret = GNUNET_SYSERR;
1242 GNUNET_free (filename);
1244 GNUNET_free (ego_pub_str);
1245 GNUNET_free (place_pub_str);
1251 app_place_remove (const char *app_id,
1252 const struct GNUNET_CRYPTO_EcdsaPublicKey *ego_pub_key,
1253 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key)
1255 struct GNUNET_HashCode ego_pub_hash;
1256 struct GNUNET_HashCode place_pub_hash;
1257 GNUNET_CRYPTO_hash (ego_pub_key, sizeof (*ego_pub_key), &ego_pub_hash);
1258 GNUNET_CRYPTO_hash (place_pub_key, sizeof (*place_pub_key), &place_pub_hash);
1260 char *ego_pub_str = GNUNET_CRYPTO_ecdsa_public_key_to_string (ego_pub_key);
1261 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (place_pub_key);
1262 char *app_place_filename = NULL;
1263 GNUNET_asprintf (&app_place_filename,
1264 "%s%c" "%s%c" "%s%c" "%s%c" "%s",
1265 dir_social, DIR_SEPARATOR,
1266 "apps", DIR_SEPARATOR,
1267 app_id, DIR_SEPARATOR,
1268 ego_pub_str, DIR_SEPARATOR,
1270 GNUNET_free (ego_pub_str);
1271 GNUNET_free (place_pub_str);
1273 struct GNUNET_HashCode app_id_hash;
1274 GNUNET_CRYPTO_hash (app_id, strlen (app_id) + 1, &app_id_hash);
1276 struct GNUNET_CONTAINER_MultiHashMap *
1277 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
1279 if (NULL != app_places)
1280 GNUNET_CONTAINER_multihashmap_remove (app_places, &place_pub_hash, NULL);
1282 struct GNUNET_CONTAINER_MultiHashMap *
1283 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &place_pub_hash);
1284 if (NULL != place_apps)
1286 void *app_id_value = GNUNET_CONTAINER_multihashmap_get (place_apps, &app_id_hash);
1287 if (NULL != app_id_value)
1289 GNUNET_CONTAINER_multihashmap_remove (place_apps, &app_id_hash, app_id_value);
1290 GNUNET_free (app_id_value);
1294 int ret = GNUNET_OK;
1296 if (0 != unlink (app_place_filename))
1299 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1300 "Error removing app place file: %s: %s (%d)\n",
1301 app_place_filename, strerror (errno), errno);
1302 ret = GNUNET_SYSERR;
1304 GNUNET_free (app_place_filename);
1311 * Enter place as host.
1314 * Host entry request.
1315 * @param[out] ret_hst
1316 * Returned Host struct.
1318 * @return #GNUNET_YES if the host entered the place just now,
1319 * #GNUNET_NO if the place is already entered,
1320 * #GNUNET_SYSERR if place_pub_key was set
1321 * but its private key was not found
1324 host_enter (const struct HostEnterRequest *hreq, struct Host **ret_hst)
1326 int ret = GNUNET_NO;
1327 struct GNUNET_HashCode place_pub_hash;
1328 GNUNET_CRYPTO_hash (&hreq->place_pub_key, sizeof (hreq->place_pub_key),
1330 struct Host *hst = GNUNET_CONTAINER_multihashmap_get (hosts, &place_pub_hash);
1334 hst = GNUNET_new (struct Host);
1335 hst->policy = hreq->policy;
1336 hst->join_reqs = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1337 hst->relay_msgs = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1339 struct Place *plc = &hst->plc;
1341 plc->is_host = GNUNET_YES;
1342 plc->pub_key = hreq->place_pub_key;
1343 plc->pub_key_hash = place_pub_hash;
1345 GNUNET_CONTAINER_multihashmap_put (hosts, &plc->pub_key_hash, plc,
1346 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1347 hst->master = GNUNET_PSYC_master_start (cfg, &hreq->place_key, hst->policy,
1348 &psyc_master_started,
1349 &psyc_recv_join_request,
1350 &psyc_recv_message, NULL, hst);
1351 plc->channel = GNUNET_PSYC_master_get_channel (hst->master);
1355 if (NULL != ret_hst)
1361 const struct MsgProcRequest *
1362 msg_proc_parse (const struct GNUNET_MessageHeader *msg,
1364 const char **method_prefix,
1365 struct GNUNET_HashCode *method_hash)
1367 const struct MsgProcRequest *mpreq = (const struct MsgProcRequest *) msg;
1368 uint8_t method_size = ntohs (mpreq->header.size) - sizeof (*mpreq);
1369 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &mpreq[1],
1370 method_size, 1, method_prefix);
1372 if (0 == offset || offset != method_size || *method_prefix == NULL)
1374 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1375 "offset = %u, method_size = %u, method_name = %s\n",
1376 offset, method_size, *method_prefix);
1380 GNUNET_CRYPTO_hash (*method_prefix, method_size, method_hash);
1381 *flags = ntohl (mpreq->flags);
1387 * Handle a client setting message proccesing flags for a method prefix.
1390 client_recv_msg_proc_set (void *cls, struct GNUNET_SERVER_Client *client,
1391 const struct GNUNET_MessageHeader *msg)
1394 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
1395 GNUNET_assert (NULL != ctx);
1396 struct Place *plc = ctx->plc;
1398 const char *method_prefix = NULL;
1400 struct GNUNET_HashCode method_hash;
1401 const struct MsgProcRequest *
1402 mpreq = msg_proc_parse (msg, &flags, &method_prefix, &method_hash);
1404 if (NULL == mpreq) {
1406 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1410 GNUNET_PSYC_slicer_method_remove (plc->slicer, method_prefix,
1411 place_recv_relay_method,
1412 place_recv_relay_modifier,
1413 place_recv_relay_data,
1414 place_recv_relay_eom);
1415 GNUNET_PSYC_slicer_method_remove (plc->slicer, method_prefix,
1416 place_recv_save_method,
1418 place_recv_save_data,
1419 place_recv_save_eom);
1421 if (flags & GNUNET_SOCIAL_MSG_PROC_RELAY)
1423 GNUNET_PSYC_slicer_method_add (plc->slicer, method_prefix, NULL,
1424 place_recv_relay_method,
1425 place_recv_relay_modifier,
1426 place_recv_relay_data,
1427 place_recv_relay_eom,
1430 if (flags & GNUNET_SOCIAL_MSG_PROC_SAVE)
1432 GNUNET_PSYC_slicer_method_add (plc->slicer, method_prefix, NULL,
1433 place_recv_save_method,
1435 place_recv_save_data,
1436 place_recv_save_eom,
1440 /** @todo Save flags to be able to resume relaying/saving after restart */
1442 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1447 * Handle a connecting client requesting to clear all relay rules.
1450 client_recv_msg_proc_clear (void *cls, struct GNUNET_SERVER_Client *client,
1451 const struct GNUNET_MessageHeader *msg)
1454 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
1455 GNUNET_assert (NULL != ctx);
1456 struct Place *plc = ctx->plc;
1457 if (GNUNET_YES != plc->is_host) {
1459 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1462 GNUNET_PSYC_slicer_clear (plc->slicer);
1464 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1469 * Handle a connecting client entering a place as host.
1472 client_recv_host_enter (void *cls, struct GNUNET_SERVER_Client *client,
1473 const struct GNUNET_MessageHeader *msg)
1475 struct HostEnterRequest *hreq
1476 = (struct HostEnterRequest *) GNUNET_copy_message (msg);
1478 uint8_t app_id_size = ntohs (hreq->header.size) - sizeof (*hreq);
1479 const char *app_id = NULL;
1480 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &hreq[1],
1481 app_id_size, 1, &app_id);
1482 if (0 == offset || offset != app_id_size || app_id == NULL)
1484 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1485 "offset = %u, app_id_size = %u, app_id = %s\n",
1486 offset, app_id_size, app_id);
1488 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1492 struct Host *hst = NULL;
1493 struct Place *plc = NULL;
1494 int ret = GNUNET_OK;
1496 struct GNUNET_CRYPTO_EddsaPublicKey empty_pub_key;
1497 memset (&empty_pub_key, 0, sizeof (empty_pub_key));
1499 if (0 == memcmp (&hreq->place_pub_key, &empty_pub_key, sizeof (empty_pub_key)))
1500 { // no public key set: create new private key & save the place
1501 struct GNUNET_CRYPTO_EddsaPrivateKey *
1502 place_key = GNUNET_CRYPTO_eddsa_key_create ();
1503 hreq->place_key = *place_key;
1504 GNUNET_CRYPTO_eddsa_key_get_public (place_key, &hreq->place_pub_key);
1505 GNUNET_CRYPTO_eddsa_key_clear (place_key);
1506 GNUNET_free (place_key);
1508 app_place_save (app_id, (const struct PlaceEnterRequest *) hreq);
1511 switch (host_enter (hreq, &hst))
1520 client_send_host_enter_ack (client, hst, GNUNET_OK);
1524 ret = GNUNET_SYSERR;
1527 if (ret != GNUNET_SYSERR)
1530 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1531 "%p Client connected as host to place %s.\n",
1532 hst, GNUNET_h2s (&plc->pub_key_hash));
1534 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
1535 cli->client = client;
1536 GNUNET_CONTAINER_DLL_insert (plc->clients_head, plc->clients_tail, cli);
1538 struct Client *ctx = GNUNET_new (struct Client);
1540 GNUNET_SERVER_client_set_user_context (client, ctx);
1543 GNUNET_CRYPTO_eddsa_key_clear (&hreq->place_key);
1545 GNUNET_SERVER_receive_done (client, ret);
1550 * Enter place as guest.
1553 * Guest entry request.
1554 * @param[out] ret_gst
1555 * Returned Guest struct.
1557 * @return #GNUNET_YES if the guest entered the place just now,
1558 * #GNUNET_NO if the place is already entered,
1559 * #GNUNET_SYSERR on error.
1562 guest_enter (const struct GuestEnterRequest *greq, struct Guest **ret_gst)
1564 int ret = GNUNET_NO;
1565 uint16_t greq_size = ntohs (greq->header.size);
1567 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key = greq->ego_pub_key;
1568 struct GNUNET_HashCode ego_pub_hash;
1569 GNUNET_CRYPTO_hash (&ego_pub_key, sizeof (ego_pub_key), &ego_pub_hash);
1570 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
1573 return GNUNET_SYSERR;
1575 struct GNUNET_HashCode place_pub_hash;
1576 GNUNET_CRYPTO_hash (&greq->place_pub_key, sizeof (greq->place_pub_key),
1579 struct GNUNET_CONTAINER_MultiHashMap *
1580 plc_gst = GNUNET_CONTAINER_multihashmap_get (place_guests, &place_pub_hash);
1581 struct Guest *gst = NULL;
1583 if (NULL != plc_gst)
1584 gst = GNUNET_CONTAINER_multihashmap_get (plc_gst, &ego_pub_hash);
1586 if (NULL == gst || NULL == gst->slave)
1588 gst = GNUNET_new (struct Guest);
1589 gst->origin = greq->origin;
1590 gst->relay_count = ntohl (greq->relay_count);
1593 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1594 const char *app_id = (const char *) &greq[1];
1595 const char *p = app_id;
1597 len = strnlen (app_id, remaining);
1598 if (len == remaining)
1602 return GNUNET_SYSERR;
1605 remaining -= len + 1;
1607 const struct GNUNET_PeerIdentity *relays = NULL;
1608 uint16_t relay_size = gst->relay_count * sizeof (*relays);
1609 if (remaining < relay_size)
1613 return GNUNET_SYSERR;
1616 relays = (const struct GNUNET_PeerIdentity *) p;
1618 remaining -= relay_size;
1620 struct GNUNET_PSYC_Message *join_msg = NULL;
1621 uint16_t join_msg_size = 0;
1623 if (sizeof (struct GNUNET_MessageHeader) <= remaining)
1625 join_msg = (struct GNUNET_PSYC_Message *) p;
1626 join_msg_size = ntohs (join_msg->header.size);
1628 remaining -= join_msg_size;
1632 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1633 "%zu + %u + %u != %u\n",
1634 sizeof (*greq), relay_size, join_msg_size, greq_size);
1637 return GNUNET_SYSERR;
1641 gst->relays = GNUNET_malloc (relay_size);
1642 GNUNET_memcpy (gst->relays, relays, relay_size);
1645 gst->join_flags = ntohl (greq->flags);
1647 struct Place *plc = &gst->plc;
1649 plc->is_host = GNUNET_NO;
1650 plc->pub_key = greq->place_pub_key;
1651 plc->pub_key_hash = place_pub_hash;
1652 plc->ego_pub_key = ego_pub_key;
1653 plc->ego_pub_hash = ego_pub_hash;
1654 plc->ego_key = ego->key;
1656 if (NULL == plc_gst)
1658 plc_gst = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
1659 (void) GNUNET_CONTAINER_multihashmap_put (place_guests, &plc->pub_key_hash, plc_gst,
1660 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1662 (void) GNUNET_CONTAINER_multihashmap_put (plc_gst, &plc->ego_pub_hash, gst,
1663 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1664 (void) GNUNET_CONTAINER_multihashmap_put (guests, &plc->pub_key_hash, gst,
1665 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1667 = GNUNET_PSYC_slave_join (cfg, &plc->pub_key, &plc->ego_key,
1668 gst->join_flags, &gst->origin,
1669 gst->relay_count, gst->relays,
1670 &psyc_recv_message, NULL,
1671 &psyc_slave_connected,
1672 &psyc_recv_join_dcsn,
1674 plc->channel = GNUNET_PSYC_slave_get_channel (gst->slave);
1678 if (NULL != ret_gst)
1685 * Handle a connecting client entering a place as guest.
1688 client_recv_guest_enter (void *cls, struct GNUNET_SERVER_Client *client,
1689 const struct GNUNET_MessageHeader *msg)
1691 const struct GuestEnterRequest *
1692 greq = (const struct GuestEnterRequest *) msg;
1694 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1695 const char *app_id = NULL;
1696 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &greq[1],
1697 remaining, 1, &app_id);
1701 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1705 struct Guest *gst = NULL;
1706 struct Place *plc = NULL;
1708 switch (guest_enter (greq, &gst))
1712 app_place_save (app_id, (const struct PlaceEnterRequest *) greq);
1719 struct GNUNET_PSYC_CountersResultMessage res;
1720 res.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_ACK);
1721 res.header.size = htons (sizeof (res));
1722 res.result_code = htonl (GNUNET_OK);
1723 res.max_message_id = GNUNET_htonll (plc->max_message_id);
1725 client_send_msg (client, &res.header);
1726 if (NULL != gst->join_dcsn)
1727 client_send_msg (client, &gst->join_dcsn->header);
1733 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1737 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1738 "%p Client connected as guest to place %s.\n",
1739 gst, GNUNET_h2s (&plc->pub_key_hash));
1741 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
1742 cli->client = client;
1743 GNUNET_CONTAINER_DLL_insert (plc->clients_head, plc->clients_tail, cli);
1745 struct Client *ctx = GNUNET_new (struct Client);
1747 GNUNET_SERVER_client_set_user_context (client, ctx);
1748 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1752 struct GuestEnterByNameClosure
1754 struct GNUNET_SERVER_Client *client;
1757 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
1758 struct GNUNET_MessageHeader *join_msg;
1763 * Result of a GNS name lookup for entering a place.
1765 * @see GNUNET_SOCIAL_guest_enter_by_name
1768 gns_result_guest_enter (void *cls, uint32_t rd_count,
1769 const struct GNUNET_GNSRECORD_Data *rd)
1771 struct GuestEnterByNameClosure *gcls = cls;
1772 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1773 "%p GNS result: %u records.\n", gcls->client, rd_count);
1775 const struct GNUNET_GNSRECORD_PlaceData *
1776 rec = (const struct GNUNET_GNSRECORD_PlaceData *) rd->data;
1778 if (0 == rd_count || rd->data_size < sizeof (*rec))
1781 GNUNET_SERVER_receive_done (gcls->client, GNUNET_SYSERR);
1785 uint16_t relay_count = ntohl (rec->relay_count);
1786 struct GNUNET_PeerIdentity *relays = NULL;
1788 if (0 < relay_count)
1790 if (rd->data_size == sizeof (*rec) + relay_count * sizeof (struct GNUNET_PeerIdentity))
1792 relays = (struct GNUNET_PeerIdentity *) &rec[1];
1797 GNUNET_break_op (0);
1801 uint16_t app_id_size = strlen (gcls->app_id) + 1;
1802 uint16_t relay_size = relay_count * sizeof (*relays);
1803 uint16_t join_msg_size = 0;
1804 if (NULL != gcls->join_msg)
1805 join_msg_size = ntohs (gcls->join_msg->size);
1806 uint16_t greq_size = sizeof (struct GuestEnterRequest)
1807 + app_id_size + relay_size + join_msg_size;
1808 struct GuestEnterRequest *greq = GNUNET_malloc (greq_size);
1809 greq->header.size = htons (greq_size);
1810 greq->header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER);
1811 greq->ego_pub_key = gcls->ego_pub_key;
1812 greq->place_pub_key = rec->place_pub_key;
1813 greq->origin = rec->origin;
1814 greq->relay_count = rec->relay_count;
1817 GNUNET_memcpy (p, gcls->app_id, app_id_size);
1819 GNUNET_memcpy (p, relays, relay_size);
1821 GNUNET_memcpy (p, gcls->join_msg, join_msg_size);
1823 client_recv_guest_enter (NULL, gcls->client, &greq->header);
1825 GNUNET_free (gcls->app_id);
1826 if (NULL != gcls->password)
1827 GNUNET_free (gcls->password);
1828 if (NULL != gcls->join_msg)
1829 GNUNET_free (gcls->join_msg);
1836 * Handle a connecting client entering a place as guest using a GNS address.
1838 * Look up GNS address and generate a GuestEnterRequest from that.
1841 client_recv_guest_enter_by_name (void *cls, struct GNUNET_SERVER_Client *client,
1842 const struct GNUNET_MessageHeader *msg)
1844 const struct GuestEnterByNameRequest *
1845 greq = (const struct GuestEnterByNameRequest *) msg;
1847 struct GuestEnterByNameClosure *gcls = GNUNET_malloc (sizeof (*gcls));
1848 gcls->client = client;
1849 gcls->ego_pub_key = greq->ego_pub_key;
1851 const char *p = (const char *) &greq[1];
1852 const char *app_id = NULL, *password = NULL, *gns_name = NULL;
1853 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1854 uint16_t offset = GNUNET_STRINGS_buffer_tokenize (p, remaining, 3,
1859 remaining -= offset;
1861 if (0 != offset && sizeof (*gcls->join_msg) <= remaining)
1863 gcls->join_msg = GNUNET_copy_message ((struct GNUNET_MessageHeader *) p);
1864 remaining -= ntohs (gcls->join_msg->size);
1867 if (0 == offset || 0 != remaining)
1869 if (NULL != gcls->join_msg)
1870 GNUNET_free (gcls->join_msg);
1873 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1877 uint16_t app_id_size = strlen (app_id) + 1;
1878 gcls->app_id = GNUNET_malloc (app_id_size);
1879 GNUNET_memcpy (gcls->app_id, app_id, app_id_size);
1881 uint16_t password_size = strlen (password);
1882 if (0 < password_size++)
1884 gcls->password = GNUNET_malloc (password_size);
1885 GNUNET_memcpy (gcls->password, password, password_size);
1888 GNUNET_GNS_lookup (gns, gns_name, &greq->ego_pub_key,
1889 GNUNET_GNSRECORD_TYPE_PLACE, GNUNET_GNS_LO_DEFAULT,
1890 NULL, gns_result_guest_enter, gcls);
1895 app_notify_place (struct GNUNET_MessageHeader *msg,
1896 struct GNUNET_SERVER_Client *client)
1898 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1899 "%p Sending place notification of type %u to client.\n",
1900 client, ntohs (msg->type));
1902 uint16_t msg_size = ntohs (msg->size);
1903 struct AppPlaceMessage amsg;
1904 amsg.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE);
1905 amsg.header.size = htons (sizeof (amsg));
1906 // FIXME: also notify about not entered places
1907 amsg.place_state = GNUNET_SOCIAL_PLACE_STATE_ENTERED;
1909 switch (ntohs (msg->type))
1911 case GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER:
1912 if (msg_size < sizeof (struct HostEnterRequest))
1914 struct HostEnterRequest *hreq = (struct HostEnterRequest *) msg;
1915 amsg.is_host = GNUNET_YES;
1916 amsg.ego_pub_key = hreq->ego_pub_key;
1917 amsg.place_pub_key = hreq->place_pub_key;
1920 case GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER:
1921 if (msg_size < sizeof (struct GuestEnterRequest))
1923 struct GuestEnterRequest *greq = (struct GuestEnterRequest *) msg;
1924 amsg.is_host = GNUNET_NO;
1925 amsg.ego_pub_key = greq->ego_pub_key;
1926 amsg.place_pub_key = greq->place_pub_key;
1933 client_send_msg (client, &amsg.header);
1938 app_notify_place_end (struct GNUNET_SERVER_Client *client)
1940 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1941 "%p Sending end of place list notification to client\n",
1944 struct GNUNET_MessageHeader msg;
1945 msg.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE_END);
1946 msg.size = htons (sizeof (msg));
1948 client_send_msg (client, &msg);
1953 app_notify_ego (struct Ego *ego, struct GNUNET_SERVER_Client *client)
1955 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1956 "%p Sending ego notification to client: %s\n",
1959 size_t name_size = strlen (ego->name) + 1;
1960 struct AppEgoMessage *emsg = GNUNET_malloc (sizeof (*emsg) + name_size);
1961 emsg->header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO);
1962 emsg->header.size = htons (sizeof (*emsg) + name_size);
1964 GNUNET_CRYPTO_ecdsa_key_get_public (&ego->key, &emsg->ego_pub_key);
1965 GNUNET_memcpy (&emsg[1], ego->name, name_size);
1967 client_send_msg (client, &emsg->header);
1973 app_notify_ego_end (struct GNUNET_SERVER_Client *client)
1975 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1976 "%p Sending end of ego list notification to client\n",
1979 struct GNUNET_MessageHeader msg;
1980 msg.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO_END);
1981 msg.size = htons (sizeof (msg));
1983 client_send_msg (client, &msg);
1988 app_place_entry_notify (void *cls, const struct GNUNET_HashCode *key, void *value)
1990 struct GNUNET_MessageHeader *
1991 msg = GNUNET_CONTAINER_multihashmap_get (places, key);
1993 app_notify_place (msg, cls);
1999 ego_entry (void *cls, const struct GNUNET_HashCode *key, void *value)
2001 app_notify_ego (value, cls);
2007 * Handle application connection.
2010 client_recv_app_connect (void *cls, struct GNUNET_SERVER_Client *client,
2011 const struct GNUNET_MessageHeader *msg)
2013 const struct AppConnectRequest *creq
2014 = (const struct AppConnectRequest *) msg;
2016 uint8_t app_id_size = ntohs (creq->header.size) - sizeof (*creq);
2017 const char *app_id = NULL;
2018 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &creq[1],
2019 app_id_size, 1, &app_id);
2020 if (0 == offset || offset != app_id_size)
2023 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2027 struct GNUNET_HashCode app_id_hash;
2028 GNUNET_CRYPTO_hash (app_id, app_id_size, &app_id_hash);
2030 GNUNET_CONTAINER_multihashmap_iterate (egos, ego_entry, client);
2031 app_notify_ego_end (client);
2033 struct GNUNET_CONTAINER_MultiHashMap *
2034 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
2035 if (NULL != app_places)
2036 GNUNET_CONTAINER_multihashmap_iterate (app_places, app_place_entry_notify, client);
2037 app_notify_place_end (client);
2039 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
2040 cli->client = client;
2041 struct Application *app = GNUNET_CONTAINER_multihashmap_get (apps,
2044 app = GNUNET_malloc (sizeof (*app));
2045 (void) GNUNET_CONTAINER_multihashmap_put (apps, &app_id_hash, app,
2046 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
2048 GNUNET_CONTAINER_DLL_insert (app->clients_head, app->clients_tail, cli);
2050 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2051 "%p Application %s connected.\n", app, app_id);
2053 struct Client *ctx = GNUNET_new (struct Client);
2054 ctx->app_id = GNUNET_malloc (app_id_size);
2055 GNUNET_memcpy (ctx->app_id, app_id, app_id_size);
2057 GNUNET_SERVER_client_set_user_context (client, ctx);
2058 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2063 * Handle application detach request.
2066 client_recv_app_detach (void *cls, struct GNUNET_SERVER_Client *client,
2067 const struct GNUNET_MessageHeader *msg)
2070 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2071 GNUNET_assert (NULL != ctx);
2073 struct Place *plc = ctx->plc;
2075 const struct AppDetachRequest *req
2076 = (const struct AppDetachRequest *) msg;
2078 int ret = app_place_remove (ctx->app_id, &plc->ego_pub_key, &req->place_pub_key);
2079 client_send_result (client, req->op_id, ret, NULL, 0);
2081 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2086 app_places_entry_remove (void *cls, const struct GNUNET_HashCode *key, void *value)
2088 struct Place *plc = cls;
2089 const char *app_id = value;
2090 app_place_remove (app_id, &plc->ego_pub_key, &plc->pub_key);
2096 * Handle application detach request.
2099 client_recv_place_leave (void *cls, struct GNUNET_SERVER_Client *client,
2100 const struct GNUNET_MessageHeader *msg)
2103 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2104 GNUNET_assert (NULL != ctx);
2105 struct Place *plc = ctx->plc;
2107 /* FIXME: remove all app subscriptions and leave this place */
2109 struct GNUNET_CONTAINER_MultiHashMap *
2110 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &plc->pub_key_hash);
2111 if (NULL != place_apps)
2113 GNUNET_CONTAINER_multihashmap_iterate (place_apps, app_places_entry_remove, plc);
2116 /* FIXME: disconnect from the network, but keep local connection for history access */
2118 /* Disconnect all clients connected to the place */
2119 struct ClientListItem *cli = plc->clients_head, *next;
2122 GNUNET_CONTAINER_DLL_remove (plc->clients_head, plc->clients_tail, cli);
2123 GNUNET_SERVER_client_disconnect (cli->client);
2129 if (GNUNET_YES != plc->is_disconnected)
2131 plc->is_disconnected = GNUNET_YES;
2132 if (NULL != plc->tmit_msgs_head)
2133 { /* Send pending messages to PSYC before cleanup. */
2134 psyc_transmit_message (plc);
2138 cleanup_place (plc);
2144 struct JoinDecisionClosure
2146 int32_t is_admitted;
2147 struct GNUNET_PSYC_Message *msg;
2152 * Iterator callback for responding to join requests.
2155 psyc_send_join_decision (void *cls, const struct GNUNET_HashCode *pub_key_hash,
2158 struct JoinDecisionClosure *jcls = cls;
2159 struct GNUNET_PSYC_JoinHandle *jh = value;
2160 // FIXME: add relays
2161 GNUNET_PSYC_join_decision (jh, jcls->is_admitted, 0, NULL, jcls->msg);
2167 * Handle an entry decision from a host client.
2170 client_recv_join_decision (void *cls, struct GNUNET_SERVER_Client *client,
2171 const struct GNUNET_MessageHeader *msg)
2174 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2175 GNUNET_assert (NULL != ctx);
2176 struct Place *plc = ctx->plc;
2177 if (GNUNET_YES != plc->is_host) {
2179 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2182 struct Host *hst = (struct Host *) plc;
2184 struct GNUNET_PSYC_JoinDecisionMessage *
2185 dcsn = (struct GNUNET_PSYC_JoinDecisionMessage *) msg;
2186 struct JoinDecisionClosure jcls;
2187 jcls.is_admitted = ntohl (dcsn->is_admitted);
2189 = (sizeof (*dcsn) + sizeof (*jcls.msg) <= ntohs (msg->size))
2190 ? (struct GNUNET_PSYC_Message *) &dcsn[1]
2193 struct GNUNET_HashCode slave_pub_hash;
2194 GNUNET_CRYPTO_hash (&dcsn->slave_pub_key, sizeof (dcsn->slave_pub_key),
2197 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2198 "%p Got join decision (%d) from client for place %s..\n",
2199 hst, jcls.is_admitted, GNUNET_h2s (&plc->pub_key_hash));
2200 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2201 "%p ..and slave %s.\n",
2202 hst, GNUNET_h2s (&slave_pub_hash));
2204 GNUNET_CONTAINER_multihashmap_get_multiple (hst->join_reqs, &slave_pub_hash,
2205 &psyc_send_join_decision, &jcls);
2206 GNUNET_CONTAINER_multihashmap_remove_all (hst->join_reqs, &slave_pub_hash);
2207 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2212 * Send acknowledgement to a client.
2214 * Sent after a message fragment has been passed on to multicast.
2216 * @param plc The place struct for the client.
2219 send_message_ack (struct Place *plc, struct GNUNET_SERVER_Client *client)
2221 struct GNUNET_MessageHeader res;
2222 res.size = htons (sizeof (res));
2223 res.type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK);
2224 client_send_msg (client, &res);
2229 * Proceed to the next message part in the transmission queue.
2232 * Place where the transmission is going on.
2234 * Currently transmitted message.
2236 * Currently transmitted message fragment.
2238 * @return @a tmit_frag, or NULL if reached the end of fragment.
2240 static struct FragmentTransmitQueue *
2241 psyc_transmit_queue_next_part (struct Place *plc,
2242 struct MessageTransmitQueue *tmit_msg,
2243 struct FragmentTransmitQueue *tmit_frag)
2245 uint16_t psize = ntohs (tmit_frag->next_part->size);
2246 if ((char *) tmit_frag->next_part + psize - ((char *) &tmit_frag[1])
2249 tmit_frag->next_part
2250 = (struct GNUNET_MessageHeader *) ((char *) tmit_frag->next_part + psize);
2252 else /* Reached end of current fragment. */
2254 if (NULL != tmit_frag->client)
2255 send_message_ack (plc, tmit_frag->client);
2256 GNUNET_CONTAINER_DLL_remove (tmit_msg->frags_head, tmit_msg->frags_tail, tmit_frag);
2257 GNUNET_free (tmit_frag);
2265 * Proceed to next message in transmission queue.
2268 * Place where the transmission is going on.
2270 * Currently transmitted message.
2272 * @return The next message in queue, or NULL if queue is empty.
2274 static struct MessageTransmitQueue *
2275 psyc_transmit_queue_next_msg (struct Place *plc,
2276 struct MessageTransmitQueue *tmit_msg)
2278 GNUNET_CONTAINER_DLL_remove (plc->tmit_msgs_head, plc->tmit_msgs_tail, tmit_msg);
2279 GNUNET_free (tmit_msg);
2280 return plc->tmit_msgs_head;
2285 * Callback for data transmission to PSYC.
2288 psyc_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2290 struct Place *plc = cls;
2291 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2292 GNUNET_assert (NULL != tmit_msg);
2293 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2294 if (NULL == tmit_frag)
2295 { /* Rest of the message have not arrived yet, pause transmission */
2299 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2302 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2303 "%p psyc_transmit_notify_data: nothing to send.\n", plc);
2308 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2309 "%p psyc_transmit_notify_data()\n", plc);
2310 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, pmsg);
2312 uint16_t ptype = ntohs (pmsg->type);
2313 uint16_t pdata_size = ntohs (pmsg->size) - sizeof (*pmsg);
2318 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA:
2319 if (*data_size < pdata_size)
2321 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2322 "%p psyc_transmit_notify_data: buffer size too small for data.\n", plc);
2326 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2327 "%p psyc_transmit_notify_data: sending %u bytes.\n",
2330 *data_size = pdata_size;
2331 GNUNET_memcpy (data, &pmsg[1], *data_size);
2335 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2340 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2342 ret = GNUNET_SYSERR;
2346 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2347 "%p psyc_transmit_notify_data: unexpected message part of type %u.\n",
2349 ret = GNUNET_SYSERR;
2352 if (GNUNET_SYSERR == ret && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL != ptype)
2355 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2356 plc->is_disconnected = GNUNET_YES;
2357 GNUNET_SERVER_client_disconnect (tmit_frag->client);
2358 GNUNET_SCHEDULER_add_now (&cleanup_place, plc);
2363 tmit_frag = psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2364 if (NULL != tmit_frag)
2366 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2367 ptype = ntohs (pmsg->type);
2370 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2373 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2374 ret = GNUNET_SYSERR;
2379 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2380 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2381 tmit_frag = psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2385 if (NULL == tmit_msg->frags_head
2386 && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= ptype)
2387 { /* Reached end of current message. */
2388 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2392 if (ret != GNUNET_NO)
2394 if (NULL != tmit_msg)
2396 psyc_transmit_message (plc);
2398 else if (GNUNET_YES == plc->is_disconnected)
2400 /* FIXME: handle partial message (when still in_transmit) */
2401 cleanup_place (plc);
2409 * Callback for modifier transmission to PSYC.
2412 psyc_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2413 uint8_t *oper, uint32_t *full_value_size)
2415 struct Place *plc = cls;
2416 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2417 GNUNET_assert (NULL != tmit_msg);
2418 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2419 if (NULL == tmit_frag)
2420 { /* Rest of the message have not arrived yet, pause transmission */
2424 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2427 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2428 "%p psyc_transmit_notify_mod: nothing to send.\n", plc);
2433 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2434 "%p psyc_transmit_notify_mod()\n", plc);
2435 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, pmsg);
2437 uint16_t ptype = ntohs (pmsg->type);
2442 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MODIFIER:
2446 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2447 "%p psyc_transmit_notify_mod: oper is NULL.\n", plc);
2448 ret = GNUNET_SYSERR;
2451 struct GNUNET_PSYC_MessageModifier *
2452 pmod = (struct GNUNET_PSYC_MessageModifier *) tmit_frag->next_part;
2453 uint16_t mod_size = ntohs (pmod->header.size) - sizeof (*pmod);
2455 if (*data_size < mod_size)
2457 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2458 "%p psyc_transmit_notify_mod: buffer size too small for data.\n", plc);
2463 *full_value_size = ntohl (pmod->value_size);
2465 *data_size = mod_size;
2466 GNUNET_memcpy (data, &pmod[1], mod_size);
2471 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MOD_CONT:
2475 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2476 "%p psyc_transmit_notify_mod: oper is not NULL.\n", plc);
2477 ret = GNUNET_SYSERR;
2480 uint16_t mod_size = ntohs (pmsg->size) - sizeof (*pmsg);
2481 if (*data_size < mod_size)
2483 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2484 "%p psyc_transmit_notify_mod: buffer size too small for data.\n", plc);
2488 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2489 "%p psyc_transmit_notify_mod: sending %u bytes.\n", plc, mod_size);
2491 *data_size = mod_size;
2492 GNUNET_memcpy (data, &pmsg[1], *data_size);
2497 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA:
2498 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2499 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2505 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2506 "%p psyc_transmit_notify_mod: unexpected message part of type %u.\n",
2508 ret = GNUNET_SYSERR;
2511 if (GNUNET_SYSERR == ret)
2514 ret = GNUNET_SYSERR;
2515 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2516 plc->is_disconnected = GNUNET_YES;
2517 GNUNET_SERVER_client_disconnect (tmit_frag->client);
2518 GNUNET_SCHEDULER_add_now (&cleanup_place, plc);
2522 if (GNUNET_YES != ret)
2523 psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2525 if (NULL == tmit_msg->frags_head
2526 && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= ptype)
2527 { /* Reached end of current message. */
2528 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2535 * Callback for data transmission from a host to PSYC.
2538 host_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2540 int ret = psyc_transmit_notify_data (cls, data_size, data);
2542 if (GNUNET_NO != ret)
2544 struct Host *hst = cls;
2545 hst->tmit_handle = NULL;
2552 * Callback for the transmit functions of multicast.
2555 guest_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2557 int ret = psyc_transmit_notify_data (cls, data_size, data);
2559 if (GNUNET_NO != ret)
2561 struct Guest *gst = cls;
2562 gst->tmit_handle = NULL;
2569 * Callback for modifier transmission from a host to PSYC.
2572 host_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2573 uint8_t *oper, uint32_t *full_value_size)
2575 int ret = psyc_transmit_notify_mod (cls, data_size, data,
2576 oper, full_value_size);
2577 if (GNUNET_SYSERR == ret)
2579 struct Host *hst = cls;
2580 hst->tmit_handle = NULL;
2587 * Callback for modifier transmission from a guest to PSYC.
2590 guest_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2591 uint8_t *oper, uint32_t *full_value_size)
2593 int ret = psyc_transmit_notify_mod (cls, data_size, data,
2594 oper, full_value_size);
2595 if (GNUNET_SYSERR == ret)
2597 struct Guest *gst = cls;
2598 gst->tmit_handle = NULL;
2605 * Get method part of next message from transmission queue.
2610 * @return #GNUNET_OK on success
2611 * #GNUNET_NO if there are no more messages in queue.
2612 * #GNUNET_SYSERR if the next message is malformed.
2614 static struct GNUNET_PSYC_MessageMethod *
2615 psyc_transmit_queue_next_method (struct Place *plc)
2617 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2618 if (NULL == tmit_msg)
2621 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2622 if (NULL == tmit_frag)
2628 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2630 || GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD != ntohs (pmsg->type))
2632 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2633 "%p psyc_transmit_queue_next_method: unexpected message part of type %u.\n",
2634 plc, NULL != pmsg ? ntohs (pmsg->type) : 0);
2639 uint16_t psize = ntohs (pmsg->size);
2640 struct GNUNET_PSYC_MessageMethod *
2641 pmeth = (struct GNUNET_PSYC_MessageMethod *) GNUNET_copy_message (pmsg);
2643 if (psize < sizeof (*pmeth) + 1 || '\0' != *((char *) pmeth + psize - 1))
2645 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2646 "%p psyc_transmit_queue_next_method: invalid method name.\n",
2648 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2649 "%zu <= %u || NUL != %u\n",
2650 sizeof (*pmeth), psize, *((char *) pmeth + psize - 1));
2652 GNUNET_free (pmeth);
2656 psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2662 * Transmit the next message in queue from the host to the PSYC channel.
2665 psyc_master_transmit_message (struct Host *hst)
2667 struct Place *plc = &hst->plc;
2669 if (NULL == hst->tmit_handle)
2671 struct GNUNET_PSYC_MessageMethod *
2672 pmeth = psyc_transmit_queue_next_method (plc);
2674 return GNUNET_SYSERR;
2676 hst->tmit_handle = (void *) &hst->tmit_handle;
2677 struct GNUNET_PSYC_MasterTransmitHandle *
2678 tmit_handle = GNUNET_PSYC_master_transmit (hst->master, (const char *) &pmeth[1],
2679 &host_transmit_notify_mod,
2680 &host_transmit_notify_data, hst,
2682 if (NULL != hst->tmit_handle)
2683 hst->tmit_handle = tmit_handle;
2684 GNUNET_free (pmeth);
2688 GNUNET_PSYC_master_transmit_resume (hst->tmit_handle);
2695 * Transmit the next message in queue from a guest to the PSYC channel.
2698 psyc_slave_transmit_message (struct Guest *gst)
2700 struct Place *plc = &gst->plc;
2702 if (NULL == gst->tmit_handle)
2704 struct GNUNET_PSYC_MessageMethod *
2705 pmeth = psyc_transmit_queue_next_method (plc);
2707 return GNUNET_SYSERR;
2709 gst->tmit_handle = (void *) &gst->tmit_handle;
2710 struct GNUNET_PSYC_SlaveTransmitHandle *
2711 tmit_handle = GNUNET_PSYC_slave_transmit (gst->slave, (const char *) &pmeth[1],
2712 &guest_transmit_notify_mod,
2713 &guest_transmit_notify_data, gst,
2715 if (NULL != gst->tmit_handle)
2716 gst->tmit_handle = tmit_handle;
2717 GNUNET_free (pmeth);
2721 GNUNET_PSYC_slave_transmit_resume (gst->tmit_handle);
2728 * Transmit a message to PSYC.
2731 psyc_transmit_message (struct Place *plc)
2735 ? psyc_master_transmit_message ((struct Host *) plc)
2736 : psyc_slave_transmit_message ((struct Guest *) plc);
2741 * Queue message parts for sending to PSYC.
2743 * @param plc Place to send to.
2744 * @param client Client the message originates from.
2745 * @param data_size Size of @a data.
2746 * @param data Concatenated message parts.
2747 * @param first_ptype First message part type in @a data.
2748 * @param last_ptype Last message part type in @a data.
2750 static struct MessageTransmitQueue *
2751 psyc_transmit_queue_message (struct Place *plc,
2752 struct GNUNET_SERVER_Client *client,
2755 uint16_t first_ptype, uint16_t last_ptype,
2756 struct MessageTransmitQueue *tmit_msg)
2758 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD == first_ptype)
2760 tmit_msg = GNUNET_malloc (sizeof (*tmit_msg));
2761 GNUNET_CONTAINER_DLL_insert_tail (plc->tmit_msgs_head, plc->tmit_msgs_tail, tmit_msg);
2763 else if (NULL == tmit_msg)
2768 struct FragmentTransmitQueue *
2769 tmit_frag = GNUNET_malloc (sizeof (*tmit_frag) + data_size);
2770 GNUNET_memcpy (&tmit_frag[1], data, data_size);
2771 tmit_frag->next_part = (struct GNUNET_MessageHeader *) &tmit_frag[1];
2772 tmit_frag->client = client;
2773 tmit_frag->size = data_size;
2775 GNUNET_CONTAINER_DLL_insert_tail (tmit_msg->frags_head, tmit_msg->frags_tail, tmit_frag);
2776 tmit_msg->client = client;
2782 * Cancel transmission of current message to PSYC.
2784 * @param plc Place to send to.
2785 * @param client Client the message originates from.
2788 psyc_transmit_cancel (struct Place *plc, struct GNUNET_SERVER_Client *client)
2790 uint16_t type = GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL;
2792 struct GNUNET_MessageHeader msg;
2793 msg.size = htons (sizeof (msg));
2794 msg.type = htons (type);
2796 psyc_transmit_queue_message (plc, client, sizeof (msg), &msg, type, type, NULL);
2797 psyc_transmit_message (plc);
2799 /* FIXME: cleanup */
2804 * Handle an incoming message from a client, to be transmitted to the place.
2807 client_recv_psyc_message (void *cls, struct GNUNET_SERVER_Client *client,
2808 const struct GNUNET_MessageHeader *msg)
2811 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2812 GNUNET_assert (NULL != ctx);
2813 struct Place *plc = ctx->plc;
2814 int ret = GNUNET_SYSERR;
2816 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2817 "%p Received message from client.\n", plc);
2818 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, msg);
2820 if (GNUNET_YES != plc->is_ready)
2822 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2823 "%p Place is not ready yet, disconnecting client.\n", plc);
2825 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2829 uint16_t size = ntohs (msg->size);
2830 uint16_t psize = size - sizeof (*msg);
2831 if (psize < sizeof (struct GNUNET_MessageHeader)
2832 || GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD < psize)
2834 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2835 "%p Received message with invalid payload size (%u) from client.\n",
2838 psyc_transmit_cancel (plc, client);
2839 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2843 uint16_t first_ptype = 0, last_ptype = 0;
2845 == GNUNET_PSYC_receive_check_parts (psize, (const char *) &msg[1],
2846 &first_ptype, &last_ptype))
2848 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2849 "%p Received invalid message part from client.\n", plc);
2851 psyc_transmit_cancel (plc, client);
2852 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2855 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2856 "%p Received message with first part type %u and last part type %u.\n",
2857 plc, first_ptype, last_ptype);
2860 = psyc_transmit_queue_message (plc, client, psize, &msg[1],
2861 first_ptype, last_ptype, ctx->tmit_msg);
2862 if (NULL != ctx->tmit_msg)
2864 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= last_ptype)
2865 ctx->tmit_msg = NULL;
2866 ret = psyc_transmit_message (plc);
2869 if (GNUNET_OK != ret)
2871 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2872 "%p Received invalid message part from client.\n", plc);
2874 psyc_transmit_cancel (plc, client);
2875 ret = GNUNET_SYSERR;
2877 GNUNET_SERVER_receive_done (client, ret);
2882 * A historic message arrived from PSYC.
2885 psyc_recv_history_message (void *cls, const struct GNUNET_PSYC_MessageHeader *msg)
2887 struct OperationClosure *opcls = cls;
2888 struct Place *plc = opcls->plc;
2890 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2891 "%p Received historic message #%" PRId64 " (flags: %x)\n",
2892 plc, GNUNET_ntohll (msg->message_id), ntohl (msg->flags));
2894 uint16_t size = ntohs (msg->header.size);
2896 struct GNUNET_OperationResultMessage *
2897 res = GNUNET_malloc (sizeof (*res) + size);
2898 res->header.size = htons (sizeof (*res) + size);
2899 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT);
2900 res->op_id = opcls->op_id;
2901 res->result_code = GNUNET_htonll (GNUNET_OK);
2903 GNUNET_memcpy (&res[1], msg, size);
2905 /** @todo FIXME: send only to requesting client */
2906 place_send_msg (plc, &res->header);
2913 * Result of message history replay from PSYC.
2916 psyc_recv_history_result (void *cls, int64_t result,
2917 const void *err_msg, uint16_t err_msg_size)
2919 struct OperationClosure *opcls = cls;
2920 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2921 "%p History replay #%" PRIu64 ": "
2922 "PSYCstore returned %" PRId64 " (%.*s)\n",
2923 opcls->plc, GNUNET_ntohll (opcls->op_id), result,
2924 err_msg_size, (const char *) err_msg);
2926 // FIXME: place might have been destroyed
2927 client_send_result (opcls->client, opcls->op_id, result, err_msg, err_msg_size);
2932 * Client requests channel history.
2935 client_recv_history_replay (void *cls, struct GNUNET_SERVER_Client *client,
2936 const struct GNUNET_MessageHeader *msg)
2939 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2940 GNUNET_assert (NULL != ctx);
2941 struct Place *plc = ctx->plc;
2943 const struct GNUNET_PSYC_HistoryRequestMessage *
2944 req = (const struct GNUNET_PSYC_HistoryRequestMessage *) msg;
2945 uint16_t size = ntohs (msg->size);
2946 const char *method_prefix = (const char *) &req[1];
2948 if (size < sizeof (*req) + 1
2949 || '\0' != method_prefix[size - sizeof (*req) - 1])
2951 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2952 "%p History replay #%" PRIu64 ": "
2953 "invalid method prefix. size: %u < %zu?\n",
2954 plc, GNUNET_ntohll (req->op_id), size, sizeof (*req) + 1);
2956 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2960 struct OperationClosure *opcls = GNUNET_malloc (sizeof (*opcls));
2961 opcls->client = client;
2963 opcls->op_id = req->op_id;
2964 opcls->flags = ntohl (req->flags);
2966 if (0 == req->message_limit)
2967 GNUNET_PSYC_channel_history_replay (plc->channel,
2968 GNUNET_ntohll (req->start_message_id),
2969 GNUNET_ntohll (req->end_message_id),
2970 method_prefix, opcls->flags,
2971 psyc_recv_history_message, NULL,
2972 psyc_recv_history_result, opcls);
2974 GNUNET_PSYC_channel_history_replay_latest (plc->channel,
2975 GNUNET_ntohll (req->message_limit),
2976 method_prefix, opcls->flags,
2977 psyc_recv_history_message, NULL,
2978 psyc_recv_history_result, opcls);
2980 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2985 * A state variable part arrived from PSYC.
2988 psyc_recv_state_var (void *cls,
2989 const struct GNUNET_MessageHeader *mod,
2992 uint32_t value_size,
2993 uint32_t full_value_size)
2995 struct OperationClosure *opcls = cls;
2996 struct Place *plc = opcls->plc;
2998 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2999 "%p Received state variable %s from PSYC\n",
3002 uint16_t size = ntohs (mod->size);
3004 struct GNUNET_OperationResultMessage *
3005 res = GNUNET_malloc (sizeof (*res) + size);
3006 res->header.size = htons (sizeof (*res) + size);
3007 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT);
3008 res->op_id = opcls->op_id;
3009 res->result_code = GNUNET_htonll (GNUNET_OK);
3011 GNUNET_memcpy (&res[1], mod, size);
3013 /** @todo FIXME: send only to requesting client */
3014 place_send_msg (plc, &res->header);
3021 * Result of retrieving state variable from PSYC.
3024 psyc_recv_state_result (void *cls, int64_t result,
3025 const void *err_msg, uint16_t err_msg_size)
3027 struct OperationClosure *opcls = cls;
3028 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3029 "%p State get #%" PRIu64 ": "
3030 "PSYCstore returned %" PRId64 " (%.*s)\n",
3031 opcls->plc, GNUNET_ntohll (opcls->op_id), result,
3032 err_msg_size, (const char *) err_msg);
3034 // FIXME: place might have been destroyed
3035 client_send_result (opcls->client, opcls->op_id, result, err_msg, err_msg_size);
3040 * Client requests channel history.
3043 client_recv_state_get (void *cls, struct GNUNET_SERVER_Client *client,
3044 const struct GNUNET_MessageHeader *msg)
3047 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
3048 GNUNET_assert (NULL != ctx);
3049 struct Place *plc = ctx->plc;
3051 const struct GNUNET_PSYC_StateRequestMessage *
3052 req = (const struct GNUNET_PSYC_StateRequestMessage *) msg;
3053 uint16_t size = ntohs (msg->size);
3054 const char *name = (const char *) &req[1];
3056 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3057 "%p State get #%" PRIu64 ": %s\n",
3058 plc, GNUNET_ntohll (req->op_id), name);
3060 if (size < sizeof (*req) + 1
3061 || '\0' != name[size - sizeof (*req) - 1])
3063 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3064 "%p State get #%" PRIu64 ": "
3065 "invalid name. size: %u < %zu?\n",
3066 plc, GNUNET_ntohll (req->op_id), size, sizeof (*req) + 1);
3068 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
3072 struct OperationClosure *opcls = GNUNET_malloc (sizeof (*opcls));
3073 opcls->client = client;
3075 opcls->op_id = req->op_id;
3077 switch (ntohs (msg->type))
3079 case GNUNET_MESSAGE_TYPE_PSYC_STATE_GET:
3080 GNUNET_PSYC_channel_state_get (plc->channel, name,
3081 psyc_recv_state_var,
3082 psyc_recv_state_result, opcls);
3085 case GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX:
3086 GNUNET_PSYC_channel_state_get_prefix (plc->channel, name,
3087 psyc_recv_state_var,
3088 psyc_recv_state_result, opcls);
3095 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3100 namestore_recv_records_store_result (void *cls, int32_t result,
3101 const char *err_msg)
3103 struct OperationClosure *ocls = cls;
3104 client_send_result (ocls->client, ocls->op_id, result, err_msg,
3105 (NULL != err_msg) ? strlen (err_msg) : 0);
3111 * Handle request to add PLACE record to GNS zone.
3114 client_recv_zone_add_place (void *cls, struct GNUNET_SERVER_Client *client,
3115 const struct GNUNET_MessageHeader *msg)
3117 const struct ZoneAddPlaceRequest *preq
3118 = (const struct ZoneAddPlaceRequest *) msg;
3120 uint16_t remaining = ntohs (preq->header.size) - sizeof (*preq);
3121 const char *p = (const char *) &preq[1];
3122 const char *name = NULL, *password = NULL;
3123 uint16_t offset = GNUNET_STRINGS_buffer_tokenize (p, remaining, 2,
3125 remaining -= offset;
3127 const struct GNUNET_PeerIdentity *
3128 relays = (const struct GNUNET_PeerIdentity *) p;
3129 uint16_t relay_size = ntohl (preq->relay_count) * sizeof (*relays);
3131 if (0 == offset || remaining != relay_size)
3134 client_send_result (client, preq->op_id, GNUNET_SYSERR, NULL, 0);
3135 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3139 struct GNUNET_GNSRECORD_Data rd = { };
3140 rd.record_type = GNUNET_GNSRECORD_TYPE_PLACE;
3141 rd.flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
3142 rd.expiration_time = GNUNET_ntohll (preq->expiration_time);
3144 struct GNUNET_GNSRECORD_PlaceData *
3145 rec = GNUNET_malloc (sizeof (*rec) + relay_size);
3146 rec->place_pub_key = preq->place_pub_key;
3147 rec->origin = this_peer;
3148 rec->relay_count = preq->relay_count;
3149 GNUNET_memcpy (&rec[1], relays, relay_size);
3152 rd.data_size = sizeof (*rec) + relay_size;
3154 struct GNUNET_HashCode ego_pub_hash;
3155 GNUNET_CRYPTO_hash (&preq->ego_pub_key, sizeof (preq->ego_pub_key), &ego_pub_hash);
3156 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3159 client_send_result (client, preq->op_id, GNUNET_SYSERR, NULL, 0);
3163 struct OperationClosure *ocls = GNUNET_malloc (sizeof (*ocls));
3164 ocls->client = client;
3165 ocls->op_id = preq->op_id;
3166 GNUNET_NAMESTORE_records_store (namestore, &ego->key,
3168 namestore_recv_records_store_result, ocls);
3169 /** @todo refresh stored records later */
3171 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3176 * Handle request to add PLACE record to GNS zone.
3179 client_recv_zone_add_nym (void *cls, struct GNUNET_SERVER_Client *client,
3180 const struct GNUNET_MessageHeader *msg)
3182 const struct ZoneAddNymRequest *nreq
3183 = (const struct ZoneAddNymRequest *) msg;
3185 uint16_t name_size = ntohs (nreq->header.size) - sizeof (*nreq);
3186 const char *name = NULL;
3187 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &nreq[1],
3188 name_size, 1, &name);
3189 if (0 == offset || offset != name_size)
3192 client_send_result (client, nreq->op_id, GNUNET_SYSERR, NULL, 0);
3193 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3197 struct GNUNET_GNSRECORD_Data rd = { };
3198 rd.record_type = GNUNET_GNSRECORD_TYPE_PKEY;
3199 rd.flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
3200 rd.expiration_time = GNUNET_ntohll (nreq->expiration_time);
3201 rd.data = &nreq->nym_pub_key;
3202 rd.data_size = sizeof (nreq->nym_pub_key);
3204 struct GNUNET_HashCode ego_pub_hash;
3205 GNUNET_CRYPTO_hash (&nreq->ego_pub_key, sizeof (nreq->ego_pub_key), &ego_pub_hash);
3206 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3209 client_send_result (client, nreq->op_id, GNUNET_SYSERR, NULL, 0);
3213 struct OperationClosure *ocls = GNUNET_malloc (sizeof (*ocls));
3214 ocls->client = client;
3215 ocls->op_id = nreq->op_id;
3216 GNUNET_NAMESTORE_records_store (namestore, &ego->key,
3218 namestore_recv_records_store_result, ocls);
3219 /** @todo refresh stored records later */
3221 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3225 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
3226 { client_recv_host_enter, NULL,
3227 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER, 0 },
3229 { client_recv_guest_enter, NULL,
3230 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER, 0 },
3232 { client_recv_guest_enter_by_name, NULL,
3233 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_BY_NAME, 0 },
3235 { client_recv_join_decision, NULL,
3236 GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION, 0 },
3238 { client_recv_psyc_message, NULL,
3239 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE, 0 },
3241 { client_recv_history_replay, NULL,
3242 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_REPLAY, 0 },
3244 { client_recv_state_get, NULL,
3245 GNUNET_MESSAGE_TYPE_PSYC_STATE_GET, 0 },
3247 { client_recv_state_get, NULL,
3248 GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX, 0 },
3250 { client_recv_zone_add_place, NULL,
3251 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_PLACE, 0 },
3253 { client_recv_zone_add_nym, NULL,
3254 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_NYM, 0 },
3256 { client_recv_app_connect, NULL,
3257 GNUNET_MESSAGE_TYPE_SOCIAL_APP_CONNECT, 0 },
3259 { client_recv_app_detach, NULL,
3260 GNUNET_MESSAGE_TYPE_SOCIAL_APP_DETACH, 0 },
3262 { client_recv_place_leave, NULL,
3263 GNUNET_MESSAGE_TYPE_SOCIAL_PLACE_LEAVE, 0 },
3265 { client_recv_msg_proc_set, NULL,
3266 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_SET, 0 },
3268 { client_recv_msg_proc_clear, NULL,
3269 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_CLEAR, 0 },
3271 { NULL, NULL, 0, 0 }
3276 path_basename (const char *path)
3278 const char *basename = strrchr (path, DIR_SEPARATOR);
3279 if (NULL != basename)
3282 if (NULL == basename || '\0' == basename)
3289 struct PlaceLoadClosure
3292 const char *ego_pub_str;
3296 /** Load a place file */
3298 file_place_load (void *cls, const char *place_filename)
3300 struct PlaceLoadClosure *plcls = cls;
3302 const char *place_pub_str = path_basename (place_filename);
3303 if (NULL == place_pub_str)
3309 char *filename = NULL;
3310 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s",
3311 dir_social, DIR_SEPARATOR,
3312 "places", DIR_SEPARATOR,
3313 plcls->ego_pub_str, DIR_SEPARATOR,
3316 uint64_t file_size = 0;
3318 GNUNET_DISK_file_size (filename, &file_size, GNUNET_YES, GNUNET_YES)
3319 || file_size < sizeof (struct PlaceEnterRequest))
3321 GNUNET_free (filename);
3325 struct PlaceEnterRequest *ereq = GNUNET_malloc (file_size);
3326 ssize_t read_size = GNUNET_DISK_fn_read (filename, ereq, file_size);
3327 GNUNET_free (filename);
3328 if (read_size < 0 || read_size < sizeof (*ereq))
3334 uint16_t ereq_size = ntohs (ereq->header.size);
3335 if (read_size != ereq_size)
3341 switch (ntohs (ereq->header.type))
3343 case GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER:
3344 if (ereq_size < sizeof (struct HostEnterRequest))
3349 struct HostEnterRequest *hreq = (struct HostEnterRequest *) ereq;
3350 host_enter (hreq, NULL);
3353 case GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER:
3354 if (ereq_size < sizeof (struct GuestEnterRequest))
3359 struct GuestEnterRequest *greq = (struct GuestEnterRequest *) ereq;
3360 guest_enter (greq, NULL);
3368 app_place_add (plcls->app_id, ereq);
3375 * Read @e place_pub_str entries in @a dir_ego
3378 * Data directory of an application ego.
3379 * $GNUNET_DATA_HOME/social/apps/$app_id/$ego_pub_str/
3382 scan_app_ego_dir (void *cls, const char *dir_ego)
3384 struct PlaceLoadClosure *plcls = cls;
3385 plcls->ego_pub_str = path_basename (dir_ego);
3387 if (NULL != plcls->ego_pub_str)
3388 GNUNET_DISK_directory_scan (dir_ego, file_place_load, plcls);
3394 * Read @e ego_pub_str entries in @a dir_app
3397 * Data directory of an application.
3398 * $GNUNET_DATA_HOME/social/apps/$app_id/
3401 scan_app_dir (void *cls, const char *dir_app)
3403 if (GNUNET_YES != GNUNET_DISK_directory_test (dir_app, GNUNET_YES))
3406 struct PlaceLoadClosure plcls;
3407 plcls.app_id = path_basename (dir_app);
3409 if (NULL != plcls.app_id)
3410 GNUNET_DISK_directory_scan (dir_app, scan_app_ego_dir, &plcls);
3417 identity_recv_ego (void *cls, struct GNUNET_IDENTITY_Ego *id_ego,
3418 void **ctx, const char *name)
3420 if (NULL == id_ego) // end of initial list of egos
3423 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
3424 GNUNET_IDENTITY_ego_get_public_key (id_ego, &ego_pub_key);
3426 struct GNUNET_HashCode ego_pub_hash;
3427 GNUNET_CRYPTO_hash (&ego_pub_key, sizeof (ego_pub_key), &ego_pub_hash);
3429 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3432 GNUNET_free (ego->name);
3433 if (NULL == name) // deleted
3435 GNUNET_CONTAINER_multihashmap_remove (egos, &ego_pub_hash, ego);
3442 ego = GNUNET_malloc (sizeof (*ego));
3446 ego->key = *(GNUNET_IDENTITY_ego_get_private_key (id_ego));
3447 size_t name_size = strlen (name) + 1;
3448 ego->name = GNUNET_malloc (name_size);
3449 GNUNET_memcpy (ego->name, name, name_size);
3451 GNUNET_CONTAINER_multihashmap_put (egos, &ego_pub_hash, ego,
3452 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
3455 // FIXME: notify clients about changed ego
3460 * Connected to core service.
3463 core_connected (void *cls, const struct GNUNET_PeerIdentity *my_identity)
3465 this_peer = *my_identity;
3470 * Initialize the PSYC service.
3472 * @param cls Closure.
3473 * @param server The initialized server.
3474 * @param c Configuration to use.
3477 run (void *cls, struct GNUNET_SERVER_Handle *server,
3478 const struct GNUNET_CONFIGURATION_Handle *c)
3482 hosts = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
3483 guests = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
3484 place_guests = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3486 egos = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3487 apps = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3488 places = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3489 apps_places = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3490 places_apps = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3492 core = GNUNET_CORE_connect (cfg, NULL, core_connected, NULL, NULL,
3493 NULL, GNUNET_NO, NULL, GNUNET_NO, NULL);
3494 id = GNUNET_IDENTITY_connect (cfg, &identity_recv_ego, NULL);
3495 gns = GNUNET_GNS_connect (cfg);
3496 namestore = GNUNET_NAMESTORE_connect (cfg);
3497 stats = GNUNET_STATISTICS_create ("social", cfg);
3500 GNUNET_CONFIGURATION_get_value_filename (cfg, "social", "DATA_HOME",
3503 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
3504 "social", "DATA_HOME");
3508 GNUNET_asprintf (&dir_places, "%s%c%s",
3509 dir_social, DIR_SEPARATOR, "places");
3510 GNUNET_asprintf (&dir_apps, "%s%c%s",
3511 dir_social, DIR_SEPARATOR, "apps");
3513 GNUNET_DISK_directory_scan (dir_apps, scan_app_dir, NULL);
3515 nc = GNUNET_SERVER_notification_context_create (server, 1);
3516 GNUNET_SERVER_add_handlers (server, handlers);
3517 GNUNET_SERVER_disconnect_notify (server, &client_disconnect, NULL);
3518 GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
3523 * The main function for the service.
3525 * @param argc number of arguments from the command line
3526 * @param argv command line arguments
3527 * @return 0 ok, 1 on error
3530 main (int argc, char *const *argv)
3532 return (GNUNET_OK ==
3533 GNUNET_SERVICE_run (argc, argv, "social",
3534 GNUNET_SERVICE_OPTION_NONE,
3535 &run, NULL)) ? 0 : 1;
3538 /* end of gnunet-service-social.c */