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 */
812 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
813 "FIXME: last message was unfinished.\n");
816 tmit_msg = psyc_transmit_queue_message (&hst->plc, NULL, ntohs (pmsg->size),
817 pmsg, ptype, ptype, tmit_msg);
821 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD:
822 GNUNET_assert (GNUNET_YES == GNUNET_CONTAINER_multihashmap_put
823 (hst->relay_msgs, &nym_pub_hash, tmit_msg,
824 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
826 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
827 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
828 GNUNET_assert (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove
829 (hst->relay_msgs, &nym_pub_hash, tmit_msg));
836 * Received a method to be relayed from a guest.
839 place_recv_relay_method (void *cls,
840 const struct GNUNET_PSYC_MessageHeader *msg,
841 const struct GNUNET_PSYC_MessageMethod *meth,
843 const char *method_name)
845 struct Place *plc = cls;
847 if (GNUNET_PSYC_MESSAGE_REQUEST & ntohs (msg->flags)
848 && GNUNET_YES == plc->is_host)
850 struct Host *hst = cls;
851 host_relay_message_part (hst, &meth->header, &msg->slave_pub_key);
857 * Received a modifier to be relayed from a guest.
860 place_recv_relay_modifier (void *cls,
861 const struct GNUNET_PSYC_MessageHeader *msg,
862 const struct GNUNET_MessageHeader *pmsg,
864 enum GNUNET_PSYC_Operator oper,
868 uint16_t full_value_size)
870 struct Place *plc = cls;
872 if (GNUNET_PSYC_MESSAGE_REQUEST & ntohs (msg->flags)
873 && GNUNET_YES == plc->is_host)
875 struct Host *hst = cls;
876 host_relay_message_part (hst, pmsg, &msg->slave_pub_key);
881 * Received a data fragment to be relayed from a guest.
884 place_recv_relay_data (void *cls,
885 const struct GNUNET_PSYC_MessageHeader *msg,
886 const struct GNUNET_MessageHeader *pmsg,
891 struct Place *plc = cls;
893 if (GNUNET_PSYC_MESSAGE_REQUEST & ntohs (msg->flags)
894 && GNUNET_YES == plc->is_host)
896 struct Host *hst = cls;
897 host_relay_message_part (hst, pmsg, &msg->slave_pub_key);
903 * Received end of message to be relayed from a guest.
906 place_recv_relay_eom (void *cls,
907 const struct GNUNET_PSYC_MessageHeader *msg,
908 const struct GNUNET_MessageHeader *pmsg,
910 uint8_t is_cancelled)
912 struct Place *plc = cls;
914 if (GNUNET_PSYC_MESSAGE_REQUEST & ntohs (msg->flags)
915 && GNUNET_YES == plc->is_host)
917 struct Host *hst = cls;
918 host_relay_message_part (hst, pmsg, &msg->slave_pub_key);
924 * Received a method to be saved to disk.
926 * Create a new file for writing the data part of the message into,
927 * if the file does not yet exist.
930 place_recv_save_method (void *cls,
931 const struct GNUNET_PSYC_MessageHeader *msg,
932 const struct GNUNET_PSYC_MessageMethod *meth,
934 const char *method_name)
936 struct Place *plc = cls;
937 plc->file_offset = 0;
938 plc->file_save = GNUNET_NO;
940 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&plc->pub_key);
941 char *filename = NULL;
942 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%" PRIu64 ".part",
943 dir_social, DIR_SEPARATOR,
944 "files", DIR_SEPARATOR,
945 place_pub_str, DIR_SEPARATOR,
946 GNUNET_ntohll (msg->message_id));
947 GNUNET_free (place_pub_str);
949 /* save if does not already exist */
950 if (GNUNET_YES != GNUNET_DISK_file_test (filename))
952 if (0 == GNUNET_DISK_fn_write (filename, NULL, 0,
953 GNUNET_DISK_PERM_USER_READ
954 | GNUNET_DISK_PERM_USER_WRITE))
956 plc->file_save = GNUNET_YES;
963 GNUNET_free (filename);
968 * Received a data fragment to be saved to disk.
970 * Append data fragment to the file.
973 place_recv_save_data (void *cls,
974 const struct GNUNET_PSYC_MessageHeader *msg,
975 const struct GNUNET_MessageHeader *pmsg,
980 struct Place *plc = cls;
981 if (GNUNET_YES != plc->file_save)
984 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&plc->pub_key);
985 char *filename = NULL;
986 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%" PRIu64 ".part",
987 dir_social, DIR_SEPARATOR,
988 "files", DIR_SEPARATOR,
989 place_pub_str, DIR_SEPARATOR,
990 GNUNET_ntohll (msg->message_id));
991 GNUNET_free (place_pub_str);
992 if (GNUNET_SYSERR == GNUNET_DISK_directory_create_for_file (filename))
994 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "create", filename);
995 GNUNET_free (filename);
999 struct GNUNET_DISK_FileHandle *
1000 fh = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_WRITE,
1001 GNUNET_DISK_PERM_NONE);
1004 if (plc->file_offset != GNUNET_DISK_file_seek
1005 (fh, plc->file_offset, GNUNET_DISK_SEEK_SET)) {
1006 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "seek", filename);
1007 GNUNET_free (filename);
1010 GNUNET_DISK_file_write (fh, data, data_size);
1011 GNUNET_DISK_file_close (fh);
1012 GNUNET_free (filename);
1016 GNUNET_free (filename);
1019 plc->file_offset += data_size;
1024 * Received end of message to be saved to disk.
1026 * Remove .part ending from the filename.
1029 place_recv_save_eom (void *cls,
1030 const struct GNUNET_PSYC_MessageHeader *msg,
1031 const struct GNUNET_MessageHeader *pmsg,
1032 uint64_t message_id,
1033 uint8_t is_cancelled)
1035 struct Place *plc = cls;
1036 if (GNUNET_YES != plc->file_save)
1039 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&plc->pub_key);
1041 GNUNET_asprintf (&fn, "%s%c%s%c%s%c%" PRIu64,
1042 dir_social, DIR_SEPARATOR,
1043 "files", DIR_SEPARATOR,
1044 place_pub_str, DIR_SEPARATOR,
1045 GNUNET_ntohll (msg->message_id));
1046 GNUNET_free (place_pub_str);
1047 char *fn_part = NULL;
1048 GNUNET_asprintf (&fn_part, "%s.part", fn);
1050 if (rename (fn_part, fn)) {
1051 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1052 "Failed to rename %s into %s: %s (%d)\n",
1053 fn_part, fn, strerror (errno), errno);
1057 GNUNET_free (fn_part);
1062 * Initialize place data structure.
1065 place_init (struct Place *plc)
1067 plc->slicer = GNUNET_PSYC_slicer_create ();
1072 * Add a place to the @e places hash map.
1077 * @return #GNUNET_OK if the place was added
1078 * #GNUNET_NO if the place already exists in the hash map
1079 * #GNUNET_SYSERR on error
1082 place_add (const struct PlaceEnterRequest *ereq)
1084 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1085 "Adding place to hashmap:\n");
1087 struct EgoPlacePublicKey ego_place_pub_key = {
1088 .ego_pub_key = ereq->ego_pub_key,
1089 .place_pub_key = ereq->place_pub_key,
1091 struct GNUNET_HashCode ego_place_pub_hash;
1092 GNUNET_CRYPTO_hash (&ego_place_pub_key, sizeof (ego_place_pub_key), &ego_place_pub_hash);
1094 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1095 " ego_place_pub_hash = %s\n", GNUNET_h2s (&ego_place_pub_hash));
1097 struct GNUNET_MessageHeader *
1098 place_msg = GNUNET_CONTAINER_multihashmap_get (places, &ego_place_pub_hash);
1099 if (NULL != place_msg)
1102 place_msg = GNUNET_copy_message (&ereq->header);
1103 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (places, &ego_place_pub_hash, place_msg,
1104 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1107 GNUNET_free (place_msg);
1108 return GNUNET_SYSERR;
1115 * Add a place to the @e app_places hash map.
1122 * @return #GNUNET_OK if the place was added
1123 * #GNUNET_NO if the place already exists in the hash map
1124 * #GNUNET_SYSERR on error
1127 app_place_add (const char *app_id,
1128 const struct PlaceEnterRequest *ereq)
1130 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1131 "Adding app place to hashmap:\n");
1132 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1133 " app_id = %s\n", app_id);
1135 struct GNUNET_HashCode app_id_hash;
1136 GNUNET_CRYPTO_hash (app_id, strlen (app_id) + 1, &app_id_hash);
1138 struct EgoPlacePublicKey ego_place_pub_key = {
1139 .ego_pub_key = ereq->ego_pub_key,
1140 .place_pub_key = ereq->place_pub_key,
1142 struct GNUNET_HashCode ego_place_pub_hash;
1143 GNUNET_CRYPTO_hash (&ego_place_pub_key, sizeof (ego_place_pub_key), &ego_place_pub_hash);
1145 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1146 " ego_place_pub_hash = %s\n", GNUNET_h2s (&ego_place_pub_hash));
1148 struct GNUNET_CONTAINER_MultiHashMap *
1149 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
1150 if (NULL == app_places)
1152 app_places = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1153 GNUNET_CONTAINER_multihashmap_put (apps_places, &app_id_hash, app_places,
1154 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1157 if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (app_places, &ego_place_pub_hash))
1160 if (GNUNET_SYSERR == place_add (ereq))
1161 return GNUNET_SYSERR;
1163 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (app_places, &ego_place_pub_hash, NULL,
1164 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1167 return GNUNET_SYSERR;
1170 struct GNUNET_HashCode place_pub_hash;
1171 GNUNET_CRYPTO_hash (&ereq->place_pub_key, sizeof (ereq->place_pub_key), &place_pub_hash);
1173 struct GNUNET_CONTAINER_MultiHashMap *
1174 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &place_pub_hash);
1175 if (NULL == place_apps)
1177 place_apps = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1178 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (places_apps, &place_pub_hash, place_apps,
1179 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
1185 size_t app_id_size = strlen (app_id) + 1;
1186 void *app_id_value = GNUNET_malloc (app_id_size);
1187 GNUNET_memcpy (app_id_value, app_id, app_id_size);
1189 if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (place_apps, &app_id_hash, app_id_value,
1190 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY))
1200 * Save place entry message to disk.
1205 * Entry request message.
1208 app_place_save (const char *app_id,
1209 const struct PlaceEnterRequest *ereq)
1211 app_place_add (app_id, ereq);
1213 if (NULL == dir_places)
1214 return GNUNET_SYSERR;
1216 char *ego_pub_str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&ereq->ego_pub_key);
1217 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&ereq->place_pub_key);
1218 char *filename = NULL;
1219 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s",
1220 dir_social, DIR_SEPARATOR,
1221 "places", DIR_SEPARATOR,
1222 ego_pub_str, DIR_SEPARATOR,
1224 int ret = GNUNET_DISK_directory_create_for_file (filename);
1225 if (GNUNET_OK != ret
1226 || 0 > GNUNET_DISK_fn_write (filename, ereq, ntohs (ereq->header.size),
1227 GNUNET_DISK_PERM_USER_READ
1228 | GNUNET_DISK_PERM_USER_WRITE))
1231 ret = GNUNET_SYSERR;
1233 GNUNET_free (filename);
1235 if (ret == GNUNET_OK)
1237 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s%c" "%s",
1238 dir_social, DIR_SEPARATOR,
1239 "apps", DIR_SEPARATOR,
1240 app_id, DIR_SEPARATOR,
1241 ego_pub_str, DIR_SEPARATOR,
1243 ret = GNUNET_DISK_directory_create_for_file (filename);
1244 if (GNUNET_OK != ret
1245 || 0 > GNUNET_DISK_fn_write (filename, "", 0,
1246 GNUNET_DISK_PERM_USER_READ
1247 | GNUNET_DISK_PERM_USER_WRITE))
1250 ret = GNUNET_SYSERR;
1252 GNUNET_free (filename);
1254 GNUNET_free (ego_pub_str);
1255 GNUNET_free (place_pub_str);
1261 app_place_remove (const char *app_id,
1262 const struct GNUNET_CRYPTO_EcdsaPublicKey *ego_pub_key,
1263 const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key)
1265 struct GNUNET_HashCode ego_pub_hash;
1266 struct GNUNET_HashCode place_pub_hash;
1267 GNUNET_CRYPTO_hash (ego_pub_key, sizeof (*ego_pub_key), &ego_pub_hash);
1268 GNUNET_CRYPTO_hash (place_pub_key, sizeof (*place_pub_key), &place_pub_hash);
1270 char *ego_pub_str = GNUNET_CRYPTO_ecdsa_public_key_to_string (ego_pub_key);
1271 char *place_pub_str = GNUNET_CRYPTO_eddsa_public_key_to_string (place_pub_key);
1272 char *app_place_filename = NULL;
1273 GNUNET_asprintf (&app_place_filename,
1274 "%s%c" "%s%c" "%s%c" "%s%c" "%s",
1275 dir_social, DIR_SEPARATOR,
1276 "apps", DIR_SEPARATOR,
1277 app_id, DIR_SEPARATOR,
1278 ego_pub_str, DIR_SEPARATOR,
1280 GNUNET_free (ego_pub_str);
1281 GNUNET_free (place_pub_str);
1283 struct GNUNET_HashCode app_id_hash;
1284 GNUNET_CRYPTO_hash (app_id, strlen (app_id) + 1, &app_id_hash);
1286 struct GNUNET_CONTAINER_MultiHashMap *
1287 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
1289 if (NULL != app_places)
1290 GNUNET_CONTAINER_multihashmap_remove (app_places, &place_pub_hash, NULL);
1292 struct GNUNET_CONTAINER_MultiHashMap *
1293 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &place_pub_hash);
1294 if (NULL != place_apps)
1296 void *app_id_value = GNUNET_CONTAINER_multihashmap_get (place_apps, &app_id_hash);
1297 if (NULL != app_id_value)
1299 GNUNET_CONTAINER_multihashmap_remove (place_apps, &app_id_hash, app_id_value);
1300 GNUNET_free (app_id_value);
1304 int ret = GNUNET_OK;
1306 if (0 != unlink (app_place_filename))
1309 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1310 "Error removing app place file: %s: %s (%d)\n",
1311 app_place_filename, strerror (errno), errno);
1312 ret = GNUNET_SYSERR;
1314 GNUNET_free (app_place_filename);
1321 * Enter place as host.
1324 * Host entry request.
1325 * @param[out] ret_hst
1326 * Returned Host struct.
1328 * @return #GNUNET_YES if the host entered the place just now,
1329 * #GNUNET_NO if the place is already entered,
1330 * #GNUNET_SYSERR if place_pub_key was set
1331 * but its private key was not found
1334 host_enter (const struct HostEnterRequest *hreq, struct Host **ret_hst)
1336 int ret = GNUNET_NO;
1337 struct GNUNET_HashCode place_pub_hash;
1338 GNUNET_CRYPTO_hash (&hreq->place_pub_key, sizeof (hreq->place_pub_key),
1340 struct Host *hst = GNUNET_CONTAINER_multihashmap_get (hosts, &place_pub_hash);
1344 hst = GNUNET_new (struct Host);
1345 hst->policy = hreq->policy;
1346 hst->join_reqs = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1347 hst->relay_msgs = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1349 struct Place *plc = &hst->plc;
1351 plc->is_host = GNUNET_YES;
1352 plc->pub_key = hreq->place_pub_key;
1353 plc->pub_key_hash = place_pub_hash;
1355 GNUNET_CONTAINER_multihashmap_put (hosts, &plc->pub_key_hash, plc,
1356 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1357 hst->master = GNUNET_PSYC_master_start (cfg, &hreq->place_key, hst->policy,
1358 &psyc_master_started,
1359 &psyc_recv_join_request,
1360 &psyc_recv_message, NULL, hst);
1361 plc->channel = GNUNET_PSYC_master_get_channel (hst->master);
1365 if (NULL != ret_hst)
1371 const struct MsgProcRequest *
1372 msg_proc_parse (const struct GNUNET_MessageHeader *msg,
1374 const char **method_prefix,
1375 struct GNUNET_HashCode *method_hash)
1377 const struct MsgProcRequest *mpreq = (const struct MsgProcRequest *) msg;
1378 uint8_t method_size = ntohs (mpreq->header.size) - sizeof (*mpreq);
1379 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &mpreq[1],
1380 method_size, 1, method_prefix);
1382 if (0 == offset || offset != method_size || *method_prefix == NULL)
1384 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1385 "offset = %u, method_size = %u, method_name = %s\n",
1386 offset, method_size, *method_prefix);
1390 GNUNET_CRYPTO_hash (*method_prefix, method_size, method_hash);
1391 *flags = ntohl (mpreq->flags);
1397 * Handle a client setting message proccesing flags for a method prefix.
1400 client_recv_msg_proc_set (void *cls, struct GNUNET_SERVER_Client *client,
1401 const struct GNUNET_MessageHeader *msg)
1404 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
1405 GNUNET_assert (NULL != ctx);
1406 struct Place *plc = ctx->plc;
1408 const char *method_prefix = NULL;
1410 struct GNUNET_HashCode method_hash;
1411 const struct MsgProcRequest *
1412 mpreq = msg_proc_parse (msg, &flags, &method_prefix, &method_hash);
1414 if (NULL == mpreq) {
1416 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1420 GNUNET_PSYC_slicer_method_remove (plc->slicer, method_prefix,
1421 place_recv_relay_method,
1422 place_recv_relay_modifier,
1423 place_recv_relay_data,
1424 place_recv_relay_eom);
1425 GNUNET_PSYC_slicer_method_remove (plc->slicer, method_prefix,
1426 place_recv_save_method,
1428 place_recv_save_data,
1429 place_recv_save_eom);
1431 if (flags & GNUNET_SOCIAL_MSG_PROC_RELAY)
1433 GNUNET_PSYC_slicer_method_add (plc->slicer, method_prefix, NULL,
1434 place_recv_relay_method,
1435 place_recv_relay_modifier,
1436 place_recv_relay_data,
1437 place_recv_relay_eom,
1440 if (flags & GNUNET_SOCIAL_MSG_PROC_SAVE)
1442 GNUNET_PSYC_slicer_method_add (plc->slicer, method_prefix, NULL,
1443 place_recv_save_method,
1445 place_recv_save_data,
1446 place_recv_save_eom,
1450 /** @todo Save flags to be able to resume relaying/saving after restart */
1452 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1457 * Handle a connecting client requesting to clear all relay rules.
1460 client_recv_msg_proc_clear (void *cls, struct GNUNET_SERVER_Client *client,
1461 const struct GNUNET_MessageHeader *msg)
1464 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
1465 GNUNET_assert (NULL != ctx);
1466 struct Place *plc = ctx->plc;
1467 if (GNUNET_YES != plc->is_host) {
1469 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1472 GNUNET_PSYC_slicer_clear (plc->slicer);
1474 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1479 * Handle a connecting client entering a place as host.
1482 client_recv_host_enter (void *cls, struct GNUNET_SERVER_Client *client,
1483 const struct GNUNET_MessageHeader *msg)
1485 struct HostEnterRequest *hreq
1486 = (struct HostEnterRequest *) GNUNET_copy_message (msg);
1488 uint8_t app_id_size = ntohs (hreq->header.size) - sizeof (*hreq);
1489 const char *app_id = NULL;
1490 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &hreq[1],
1491 app_id_size, 1, &app_id);
1492 if (0 == offset || offset != app_id_size || app_id == NULL)
1494 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1495 "offset = %u, app_id_size = %u, app_id = %s\n",
1496 offset, app_id_size, app_id);
1498 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1502 struct Host *hst = NULL;
1503 struct Place *plc = NULL;
1504 int ret = GNUNET_OK;
1506 struct GNUNET_CRYPTO_EddsaPublicKey empty_pub_key;
1507 memset (&empty_pub_key, 0, sizeof (empty_pub_key));
1509 if (0 == memcmp (&hreq->place_pub_key, &empty_pub_key, sizeof (empty_pub_key)))
1510 { // no public key set: create new private key & save the place
1511 struct GNUNET_CRYPTO_EddsaPrivateKey *
1512 place_key = GNUNET_CRYPTO_eddsa_key_create ();
1513 hreq->place_key = *place_key;
1514 GNUNET_CRYPTO_eddsa_key_get_public (place_key, &hreq->place_pub_key);
1515 GNUNET_CRYPTO_eddsa_key_clear (place_key);
1516 GNUNET_free (place_key);
1518 app_place_save (app_id, (const struct PlaceEnterRequest *) hreq);
1521 switch (host_enter (hreq, &hst))
1530 client_send_host_enter_ack (client, hst, GNUNET_OK);
1534 ret = GNUNET_SYSERR;
1537 if (ret != GNUNET_SYSERR)
1540 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1541 "%p Client connected as host to place %s.\n",
1542 hst, GNUNET_h2s (&plc->pub_key_hash));
1544 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
1545 cli->client = client;
1546 GNUNET_CONTAINER_DLL_insert (plc->clients_head, plc->clients_tail, cli);
1548 struct Client *ctx = GNUNET_new (struct Client);
1550 GNUNET_SERVER_client_set_user_context (client, ctx);
1553 GNUNET_CRYPTO_eddsa_key_clear (&hreq->place_key);
1555 GNUNET_SERVER_receive_done (client, ret);
1560 * Enter place as guest.
1563 * Guest entry request.
1564 * @param[out] ret_gst
1565 * Returned Guest struct.
1567 * @return #GNUNET_YES if the guest entered the place just now,
1568 * #GNUNET_NO if the place is already entered,
1569 * #GNUNET_SYSERR on error.
1572 guest_enter (const struct GuestEnterRequest *greq, struct Guest **ret_gst)
1574 int ret = GNUNET_NO;
1575 uint16_t greq_size = ntohs (greq->header.size);
1577 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key = greq->ego_pub_key;
1578 struct GNUNET_HashCode ego_pub_hash;
1579 GNUNET_CRYPTO_hash (&ego_pub_key, sizeof (ego_pub_key), &ego_pub_hash);
1580 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
1583 return GNUNET_SYSERR;
1585 struct GNUNET_HashCode place_pub_hash;
1586 GNUNET_CRYPTO_hash (&greq->place_pub_key, sizeof (greq->place_pub_key),
1589 struct GNUNET_CONTAINER_MultiHashMap *
1590 plc_gst = GNUNET_CONTAINER_multihashmap_get (place_guests, &place_pub_hash);
1591 struct Guest *gst = NULL;
1593 if (NULL != plc_gst)
1594 gst = GNUNET_CONTAINER_multihashmap_get (plc_gst, &ego_pub_hash);
1596 if (NULL == gst || NULL == gst->slave)
1598 gst = GNUNET_new (struct Guest);
1599 gst->origin = greq->origin;
1600 gst->relay_count = ntohl (greq->relay_count);
1603 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1604 const char *app_id = (const char *) &greq[1];
1605 const char *p = app_id;
1607 len = strnlen (app_id, remaining);
1608 if (len == remaining)
1612 return GNUNET_SYSERR;
1615 remaining -= len + 1;
1617 const struct GNUNET_PeerIdentity *relays = NULL;
1618 uint16_t relay_size = gst->relay_count * sizeof (*relays);
1619 if (remaining < relay_size)
1623 return GNUNET_SYSERR;
1626 relays = (const struct GNUNET_PeerIdentity *) p;
1628 remaining -= relay_size;
1630 struct GNUNET_PSYC_Message *join_msg = NULL;
1631 uint16_t join_msg_size = 0;
1633 if (sizeof (struct GNUNET_MessageHeader) <= remaining)
1635 join_msg = (struct GNUNET_PSYC_Message *) p;
1636 join_msg_size = ntohs (join_msg->header.size);
1638 remaining -= join_msg_size;
1642 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1643 "%zu + %u + %u != %u\n",
1644 sizeof (*greq), relay_size, join_msg_size, greq_size);
1647 return GNUNET_SYSERR;
1651 gst->relays = GNUNET_malloc (relay_size);
1652 GNUNET_memcpy (gst->relays, relays, relay_size);
1655 gst->join_flags = ntohl (greq->flags);
1657 struct Place *plc = &gst->plc;
1659 plc->is_host = GNUNET_NO;
1660 plc->pub_key = greq->place_pub_key;
1661 plc->pub_key_hash = place_pub_hash;
1662 plc->ego_pub_key = ego_pub_key;
1663 plc->ego_pub_hash = ego_pub_hash;
1664 plc->ego_key = ego->key;
1666 if (NULL == plc_gst)
1668 plc_gst = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
1669 (void) GNUNET_CONTAINER_multihashmap_put (place_guests, &plc->pub_key_hash, plc_gst,
1670 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1672 (void) GNUNET_CONTAINER_multihashmap_put (plc_gst, &plc->ego_pub_hash, gst,
1673 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1674 (void) GNUNET_CONTAINER_multihashmap_put (guests, &plc->pub_key_hash, gst,
1675 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1677 = GNUNET_PSYC_slave_join (cfg, &plc->pub_key, &plc->ego_key,
1678 gst->join_flags, &gst->origin,
1679 gst->relay_count, gst->relays,
1680 &psyc_recv_message, NULL,
1681 &psyc_slave_connected,
1682 &psyc_recv_join_dcsn,
1684 plc->channel = GNUNET_PSYC_slave_get_channel (gst->slave);
1688 if (NULL != ret_gst)
1695 * Handle a connecting client entering a place as guest.
1698 client_recv_guest_enter (void *cls, struct GNUNET_SERVER_Client *client,
1699 const struct GNUNET_MessageHeader *msg)
1701 const struct GuestEnterRequest *
1702 greq = (const struct GuestEnterRequest *) msg;
1704 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1705 const char *app_id = NULL;
1706 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &greq[1],
1707 remaining, 1, &app_id);
1711 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1715 struct Guest *gst = NULL;
1716 struct Place *plc = NULL;
1718 switch (guest_enter (greq, &gst))
1722 app_place_save (app_id, (const struct PlaceEnterRequest *) greq);
1729 struct GNUNET_PSYC_CountersResultMessage res;
1730 res.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_ACK);
1731 res.header.size = htons (sizeof (res));
1732 res.result_code = htonl (GNUNET_OK);
1733 res.max_message_id = GNUNET_htonll (plc->max_message_id);
1735 client_send_msg (client, &res.header);
1736 if (NULL != gst->join_dcsn)
1737 client_send_msg (client, &gst->join_dcsn->header);
1743 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1747 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1748 "%p Client connected as guest to place %s.\n",
1749 gst, GNUNET_h2s (&plc->pub_key_hash));
1751 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
1752 cli->client = client;
1753 GNUNET_CONTAINER_DLL_insert (plc->clients_head, plc->clients_tail, cli);
1755 struct Client *ctx = GNUNET_new (struct Client);
1757 GNUNET_SERVER_client_set_user_context (client, ctx);
1758 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1762 struct GuestEnterByNameClosure
1764 struct GNUNET_SERVER_Client *client;
1767 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
1768 struct GNUNET_MessageHeader *join_msg;
1773 * Result of a GNS name lookup for entering a place.
1775 * @see GNUNET_SOCIAL_guest_enter_by_name
1778 gns_result_guest_enter (void *cls, uint32_t rd_count,
1779 const struct GNUNET_GNSRECORD_Data *rd)
1781 struct GuestEnterByNameClosure *gcls = cls;
1782 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1783 "%p GNS result: %u records.\n", gcls->client, rd_count);
1785 const struct GNUNET_GNSRECORD_PlaceData *
1786 rec = (const struct GNUNET_GNSRECORD_PlaceData *) rd->data;
1788 if (0 == rd_count || rd->data_size < sizeof (*rec))
1791 GNUNET_SERVER_receive_done (gcls->client, GNUNET_SYSERR);
1795 uint16_t relay_count = ntohl (rec->relay_count);
1796 struct GNUNET_PeerIdentity *relays = NULL;
1798 if (0 < relay_count)
1800 if (rd->data_size == sizeof (*rec) + relay_count * sizeof (struct GNUNET_PeerIdentity))
1802 relays = (struct GNUNET_PeerIdentity *) &rec[1];
1807 GNUNET_break_op (0);
1811 uint16_t app_id_size = strlen (gcls->app_id) + 1;
1812 uint16_t relay_size = relay_count * sizeof (*relays);
1813 uint16_t join_msg_size = 0;
1814 if (NULL != gcls->join_msg)
1815 join_msg_size = ntohs (gcls->join_msg->size);
1816 uint16_t greq_size = sizeof (struct GuestEnterRequest)
1817 + app_id_size + relay_size + join_msg_size;
1818 struct GuestEnterRequest *greq = GNUNET_malloc (greq_size);
1819 greq->header.size = htons (greq_size);
1820 greq->header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER);
1821 greq->ego_pub_key = gcls->ego_pub_key;
1822 greq->place_pub_key = rec->place_pub_key;
1823 greq->origin = rec->origin;
1824 greq->relay_count = rec->relay_count;
1827 GNUNET_memcpy (p, gcls->app_id, app_id_size);
1829 GNUNET_memcpy (p, relays, relay_size);
1831 GNUNET_memcpy (p, gcls->join_msg, join_msg_size);
1833 client_recv_guest_enter (NULL, gcls->client, &greq->header);
1835 GNUNET_free (gcls->app_id);
1836 if (NULL != gcls->password)
1837 GNUNET_free (gcls->password);
1838 if (NULL != gcls->join_msg)
1839 GNUNET_free (gcls->join_msg);
1846 * Handle a connecting client entering a place as guest using a GNS address.
1848 * Look up GNS address and generate a GuestEnterRequest from that.
1851 client_recv_guest_enter_by_name (void *cls, struct GNUNET_SERVER_Client *client,
1852 const struct GNUNET_MessageHeader *msg)
1854 const struct GuestEnterByNameRequest *
1855 greq = (const struct GuestEnterByNameRequest *) msg;
1857 struct GuestEnterByNameClosure *gcls = GNUNET_malloc (sizeof (*gcls));
1858 gcls->client = client;
1859 gcls->ego_pub_key = greq->ego_pub_key;
1861 const char *p = (const char *) &greq[1];
1862 const char *app_id = NULL, *password = NULL, *gns_name = NULL;
1863 uint16_t remaining = ntohs (greq->header.size) - sizeof (*greq);
1864 uint16_t offset = GNUNET_STRINGS_buffer_tokenize (p, remaining, 3,
1869 remaining -= offset;
1871 if (0 != offset && sizeof (*gcls->join_msg) <= remaining)
1873 gcls->join_msg = GNUNET_copy_message ((struct GNUNET_MessageHeader *) p);
1874 remaining -= ntohs (gcls->join_msg->size);
1877 if (0 == offset || 0 != remaining)
1879 if (NULL != gcls->join_msg)
1880 GNUNET_free (gcls->join_msg);
1883 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1887 uint16_t app_id_size = strlen (app_id) + 1;
1888 gcls->app_id = GNUNET_malloc (app_id_size);
1889 GNUNET_memcpy (gcls->app_id, app_id, app_id_size);
1891 uint16_t password_size = strlen (password);
1892 if (0 < password_size++)
1894 gcls->password = GNUNET_malloc (password_size);
1895 GNUNET_memcpy (gcls->password, password, password_size);
1898 GNUNET_GNS_lookup (gns, gns_name, &greq->ego_pub_key,
1899 GNUNET_GNSRECORD_TYPE_PLACE, GNUNET_GNS_LO_DEFAULT,
1900 NULL, gns_result_guest_enter, gcls);
1905 app_notify_place (struct GNUNET_MessageHeader *msg,
1906 struct GNUNET_SERVER_Client *client)
1908 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1909 "%p Sending place notification of type %u to client.\n",
1910 client, ntohs (msg->type));
1912 uint16_t msg_size = ntohs (msg->size);
1913 struct AppPlaceMessage amsg;
1914 amsg.header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE);
1915 amsg.header.size = htons (sizeof (amsg));
1916 // FIXME: also notify about not entered places
1917 amsg.place_state = GNUNET_SOCIAL_PLACE_STATE_ENTERED;
1919 switch (ntohs (msg->type))
1921 case GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER:
1922 if (msg_size < sizeof (struct HostEnterRequest))
1924 struct HostEnterRequest *hreq = (struct HostEnterRequest *) msg;
1925 amsg.is_host = GNUNET_YES;
1926 amsg.ego_pub_key = hreq->ego_pub_key;
1927 amsg.place_pub_key = hreq->place_pub_key;
1930 case GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER:
1931 if (msg_size < sizeof (struct GuestEnterRequest))
1933 struct GuestEnterRequest *greq = (struct GuestEnterRequest *) msg;
1934 amsg.is_host = GNUNET_NO;
1935 amsg.ego_pub_key = greq->ego_pub_key;
1936 amsg.place_pub_key = greq->place_pub_key;
1943 client_send_msg (client, &amsg.header);
1948 app_notify_place_end (struct GNUNET_SERVER_Client *client)
1950 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1951 "%p Sending end of place list notification to client\n",
1954 struct GNUNET_MessageHeader msg;
1955 msg.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_PLACE_END);
1956 msg.size = htons (sizeof (msg));
1958 client_send_msg (client, &msg);
1963 app_notify_ego (struct Ego *ego, struct GNUNET_SERVER_Client *client)
1965 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1966 "%p Sending ego notification to client: %s\n",
1969 size_t name_size = strlen (ego->name) + 1;
1970 struct AppEgoMessage *emsg = GNUNET_malloc (sizeof (*emsg) + name_size);
1971 emsg->header.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO);
1972 emsg->header.size = htons (sizeof (*emsg) + name_size);
1974 GNUNET_CRYPTO_ecdsa_key_get_public (&ego->key, &emsg->ego_pub_key);
1975 GNUNET_memcpy (&emsg[1], ego->name, name_size);
1977 client_send_msg (client, &emsg->header);
1983 app_notify_ego_end (struct GNUNET_SERVER_Client *client)
1985 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1986 "%p Sending end of ego list notification to client\n",
1989 struct GNUNET_MessageHeader msg;
1990 msg.type = htons (GNUNET_MESSAGE_TYPE_SOCIAL_APP_EGO_END);
1991 msg.size = htons (sizeof (msg));
1993 client_send_msg (client, &msg);
1998 app_place_entry_notify (void *cls, const struct GNUNET_HashCode *key, void *value)
2000 struct GNUNET_MessageHeader *
2001 msg = GNUNET_CONTAINER_multihashmap_get (places, key);
2003 app_notify_place (msg, cls);
2009 ego_entry (void *cls, const struct GNUNET_HashCode *key, void *value)
2011 app_notify_ego (value, cls);
2017 * Handle application connection.
2020 client_recv_app_connect (void *cls, struct GNUNET_SERVER_Client *client,
2021 const struct GNUNET_MessageHeader *msg)
2023 const struct AppConnectRequest *creq
2024 = (const struct AppConnectRequest *) msg;
2026 uint8_t app_id_size = ntohs (creq->header.size) - sizeof (*creq);
2027 const char *app_id = NULL;
2028 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &creq[1],
2029 app_id_size, 1, &app_id);
2030 if (0 == offset || offset != app_id_size)
2033 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2037 struct GNUNET_HashCode app_id_hash;
2038 GNUNET_CRYPTO_hash (app_id, app_id_size, &app_id_hash);
2040 GNUNET_CONTAINER_multihashmap_iterate (egos, ego_entry, client);
2041 app_notify_ego_end (client);
2043 struct GNUNET_CONTAINER_MultiHashMap *
2044 app_places = GNUNET_CONTAINER_multihashmap_get (apps_places, &app_id_hash);
2045 if (NULL != app_places)
2046 GNUNET_CONTAINER_multihashmap_iterate (app_places, app_place_entry_notify, client);
2047 app_notify_place_end (client);
2049 struct ClientListItem *cli = GNUNET_new (struct ClientListItem);
2050 cli->client = client;
2051 struct Application *app = GNUNET_CONTAINER_multihashmap_get (apps,
2054 app = GNUNET_malloc (sizeof (*app));
2055 (void) GNUNET_CONTAINER_multihashmap_put (apps, &app_id_hash, app,
2056 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
2058 GNUNET_CONTAINER_DLL_insert (app->clients_head, app->clients_tail, cli);
2060 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2061 "%p Application %s connected.\n", app, app_id);
2063 struct Client *ctx = GNUNET_new (struct Client);
2064 ctx->app_id = GNUNET_malloc (app_id_size);
2065 GNUNET_memcpy (ctx->app_id, app_id, app_id_size);
2067 GNUNET_SERVER_client_set_user_context (client, ctx);
2068 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2073 * Handle application detach request.
2076 client_recv_app_detach (void *cls, struct GNUNET_SERVER_Client *client,
2077 const struct GNUNET_MessageHeader *msg)
2080 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2081 GNUNET_assert (NULL != ctx);
2083 struct Place *plc = ctx->plc;
2085 const struct AppDetachRequest *req
2086 = (const struct AppDetachRequest *) msg;
2088 int ret = app_place_remove (ctx->app_id, &plc->ego_pub_key, &req->place_pub_key);
2089 client_send_result (client, req->op_id, ret, NULL, 0);
2091 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2096 app_places_entry_remove (void *cls, const struct GNUNET_HashCode *key, void *value)
2098 struct Place *plc = cls;
2099 const char *app_id = value;
2100 app_place_remove (app_id, &plc->ego_pub_key, &plc->pub_key);
2106 * Handle application detach request.
2109 client_recv_place_leave (void *cls, struct GNUNET_SERVER_Client *client,
2110 const struct GNUNET_MessageHeader *msg)
2113 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2114 GNUNET_assert (NULL != ctx);
2115 struct Place *plc = ctx->plc;
2117 /* FIXME: remove all app subscriptions and leave this place */
2119 struct GNUNET_CONTAINER_MultiHashMap *
2120 place_apps = GNUNET_CONTAINER_multihashmap_get (places_apps, &plc->pub_key_hash);
2121 if (NULL != place_apps)
2123 GNUNET_CONTAINER_multihashmap_iterate (place_apps, app_places_entry_remove, plc);
2126 /* FIXME: disconnect from the network, but keep local connection for history access */
2128 /* Disconnect all clients connected to the place */
2129 struct ClientListItem *cli = plc->clients_head, *next;
2132 GNUNET_CONTAINER_DLL_remove (plc->clients_head, plc->clients_tail, cli);
2133 GNUNET_SERVER_client_disconnect (cli->client);
2139 if (GNUNET_YES != plc->is_disconnected)
2141 plc->is_disconnected = GNUNET_YES;
2142 if (NULL != plc->tmit_msgs_head)
2143 { /* Send pending messages to PSYC before cleanup. */
2144 psyc_transmit_message (plc);
2148 cleanup_place (plc);
2154 struct JoinDecisionClosure
2156 int32_t is_admitted;
2157 struct GNUNET_PSYC_Message *msg;
2162 * Iterator callback for responding to join requests.
2165 psyc_send_join_decision (void *cls, const struct GNUNET_HashCode *pub_key_hash,
2168 struct JoinDecisionClosure *jcls = cls;
2169 struct GNUNET_PSYC_JoinHandle *jh = value;
2170 // FIXME: add relays
2171 GNUNET_PSYC_join_decision (jh, jcls->is_admitted, 0, NULL, jcls->msg);
2177 * Handle an entry decision from a host client.
2180 client_recv_join_decision (void *cls, struct GNUNET_SERVER_Client *client,
2181 const struct GNUNET_MessageHeader *msg)
2184 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2185 GNUNET_assert (NULL != ctx);
2186 struct Place *plc = ctx->plc;
2187 if (GNUNET_YES != plc->is_host) {
2189 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2192 struct Host *hst = (struct Host *) plc;
2194 struct GNUNET_PSYC_JoinDecisionMessage *
2195 dcsn = (struct GNUNET_PSYC_JoinDecisionMessage *) msg;
2196 struct JoinDecisionClosure jcls;
2197 jcls.is_admitted = ntohl (dcsn->is_admitted);
2199 = (sizeof (*dcsn) + sizeof (*jcls.msg) <= ntohs (msg->size))
2200 ? (struct GNUNET_PSYC_Message *) &dcsn[1]
2203 struct GNUNET_HashCode slave_pub_hash;
2204 GNUNET_CRYPTO_hash (&dcsn->slave_pub_key, sizeof (dcsn->slave_pub_key),
2207 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2208 "%p Got join decision (%d) from client for place %s..\n",
2209 hst, jcls.is_admitted, GNUNET_h2s (&plc->pub_key_hash));
2210 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2211 "%p ..and slave %s.\n",
2212 hst, GNUNET_h2s (&slave_pub_hash));
2214 GNUNET_CONTAINER_multihashmap_get_multiple (hst->join_reqs, &slave_pub_hash,
2215 &psyc_send_join_decision, &jcls);
2216 GNUNET_CONTAINER_multihashmap_remove_all (hst->join_reqs, &slave_pub_hash);
2217 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2222 * Send acknowledgement to a client.
2224 * Sent after a message fragment has been passed on to multicast.
2226 * @param plc The place struct for the client.
2229 send_message_ack (struct Place *plc, struct GNUNET_SERVER_Client *client)
2231 struct GNUNET_MessageHeader res;
2232 res.size = htons (sizeof (res));
2233 res.type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK);
2234 client_send_msg (client, &res);
2239 * Proceed to the next message part in the transmission queue.
2242 * Place where the transmission is going on.
2244 * Currently transmitted message.
2246 * Currently transmitted message fragment.
2248 * @return @a tmit_frag, or NULL if reached the end of fragment.
2250 static struct FragmentTransmitQueue *
2251 psyc_transmit_queue_next_part (struct Place *plc,
2252 struct MessageTransmitQueue *tmit_msg,
2253 struct FragmentTransmitQueue *tmit_frag)
2255 uint16_t psize = ntohs (tmit_frag->next_part->size);
2256 if ((char *) tmit_frag->next_part + psize - ((char *) &tmit_frag[1])
2259 tmit_frag->next_part
2260 = (struct GNUNET_MessageHeader *) ((char *) tmit_frag->next_part + psize);
2262 else /* Reached end of current fragment. */
2264 if (NULL != tmit_frag->client)
2265 send_message_ack (plc, tmit_frag->client);
2266 GNUNET_CONTAINER_DLL_remove (tmit_msg->frags_head, tmit_msg->frags_tail, tmit_frag);
2267 GNUNET_free (tmit_frag);
2275 * Proceed to next message in transmission queue.
2278 * Place where the transmission is going on.
2280 * Currently transmitted message.
2282 * @return The next message in queue, or NULL if queue is empty.
2284 static struct MessageTransmitQueue *
2285 psyc_transmit_queue_next_msg (struct Place *plc,
2286 struct MessageTransmitQueue *tmit_msg)
2288 GNUNET_CONTAINER_DLL_remove (plc->tmit_msgs_head, plc->tmit_msgs_tail, tmit_msg);
2289 GNUNET_free (tmit_msg);
2290 return plc->tmit_msgs_head;
2295 * Callback for data transmission to PSYC.
2298 psyc_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2300 struct Place *plc = cls;
2301 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2302 GNUNET_assert (NULL != tmit_msg);
2303 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2304 if (NULL == tmit_frag)
2305 { /* Rest of the message have not arrived yet, pause transmission */
2309 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2312 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2313 "%p psyc_transmit_notify_data: nothing to send.\n", plc);
2318 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2319 "%p psyc_transmit_notify_data()\n", plc);
2320 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, pmsg);
2322 uint16_t ptype = ntohs (pmsg->type);
2323 uint16_t pdata_size = ntohs (pmsg->size) - sizeof (*pmsg);
2328 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA:
2329 if (*data_size < pdata_size)
2331 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2332 "%p psyc_transmit_notify_data: buffer size too small for data.\n", plc);
2336 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2337 "%p psyc_transmit_notify_data: sending %u bytes.\n",
2340 *data_size = pdata_size;
2341 GNUNET_memcpy (data, &pmsg[1], *data_size);
2345 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2350 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2352 ret = GNUNET_SYSERR;
2356 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2357 "%p psyc_transmit_notify_data: unexpected message part of type %u.\n",
2359 ret = GNUNET_SYSERR;
2362 if (GNUNET_SYSERR == ret && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL != ptype)
2365 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2366 plc->is_disconnected = GNUNET_YES;
2367 GNUNET_SERVER_client_disconnect (tmit_frag->client);
2368 GNUNET_SCHEDULER_add_now (&cleanup_place, plc);
2373 tmit_frag = psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2374 if (NULL != tmit_frag)
2376 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2377 ptype = ntohs (pmsg->type);
2380 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2383 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2384 ret = GNUNET_SYSERR;
2389 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2390 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2391 tmit_frag = psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2395 if (NULL == tmit_msg->frags_head
2396 && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= ptype)
2397 { /* Reached end of current message. */
2398 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2402 if (ret != GNUNET_NO)
2404 if (NULL != tmit_msg)
2406 psyc_transmit_message (plc);
2408 else if (GNUNET_YES == plc->is_disconnected)
2410 /* FIXME: handle partial message (when still in_transmit) */
2411 cleanup_place (plc);
2419 * Callback for modifier transmission to PSYC.
2422 psyc_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2423 uint8_t *oper, uint32_t *full_value_size)
2425 struct Place *plc = cls;
2426 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2427 GNUNET_assert (NULL != tmit_msg);
2428 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2429 if (NULL == tmit_frag)
2430 { /* Rest of the message have not arrived yet, pause transmission */
2434 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2437 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2438 "%p psyc_transmit_notify_mod: nothing to send.\n", plc);
2443 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2444 "%p psyc_transmit_notify_mod()\n", plc);
2445 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, pmsg);
2447 uint16_t ptype = ntohs (pmsg->type);
2452 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MODIFIER:
2456 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2457 "%p psyc_transmit_notify_mod: oper is NULL.\n", plc);
2458 ret = GNUNET_SYSERR;
2461 struct GNUNET_PSYC_MessageModifier *
2462 pmod = (struct GNUNET_PSYC_MessageModifier *) tmit_frag->next_part;
2463 uint16_t mod_size = ntohs (pmod->header.size) - sizeof (*pmod);
2465 if (*data_size < mod_size)
2467 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2468 "%p psyc_transmit_notify_mod: buffer size too small for data.\n", plc);
2473 *full_value_size = ntohl (pmod->value_size);
2475 *data_size = mod_size;
2476 GNUNET_memcpy (data, &pmod[1], mod_size);
2481 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MOD_CONT:
2485 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2486 "%p psyc_transmit_notify_mod: oper is not NULL.\n", plc);
2487 ret = GNUNET_SYSERR;
2490 uint16_t mod_size = ntohs (pmsg->size) - sizeof (*pmsg);
2491 if (*data_size < mod_size)
2493 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2494 "%p psyc_transmit_notify_mod: buffer size too small for data.\n", plc);
2498 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2499 "%p psyc_transmit_notify_mod: sending %u bytes.\n", plc, mod_size);
2501 *data_size = mod_size;
2502 GNUNET_memcpy (data, &pmsg[1], *data_size);
2507 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA:
2508 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END:
2509 case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL:
2515 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2516 "%p psyc_transmit_notify_mod: unexpected message part of type %u.\n",
2518 ret = GNUNET_SYSERR;
2521 if (GNUNET_SYSERR == ret)
2524 ret = GNUNET_SYSERR;
2525 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2526 plc->is_disconnected = GNUNET_YES;
2527 GNUNET_SERVER_client_disconnect (tmit_frag->client);
2528 GNUNET_SCHEDULER_add_now (&cleanup_place, plc);
2532 if (GNUNET_YES != ret)
2533 psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2535 if (NULL == tmit_msg->frags_head
2536 && GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= ptype)
2537 { /* Reached end of current message. */
2538 tmit_msg = psyc_transmit_queue_next_msg (plc, tmit_msg);
2545 * Callback for data transmission from a host to PSYC.
2548 host_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2550 int ret = psyc_transmit_notify_data (cls, data_size, data);
2552 if (GNUNET_NO != ret)
2554 struct Host *hst = cls;
2555 hst->tmit_handle = NULL;
2562 * Callback for the transmit functions of multicast.
2565 guest_transmit_notify_data (void *cls, uint16_t *data_size, void *data)
2567 int ret = psyc_transmit_notify_data (cls, data_size, data);
2569 if (GNUNET_NO != ret)
2571 struct Guest *gst = cls;
2572 gst->tmit_handle = NULL;
2579 * Callback for modifier transmission from a host to PSYC.
2582 host_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2583 uint8_t *oper, uint32_t *full_value_size)
2585 int ret = psyc_transmit_notify_mod (cls, data_size, data,
2586 oper, full_value_size);
2587 if (GNUNET_SYSERR == ret)
2589 struct Host *hst = cls;
2590 hst->tmit_handle = NULL;
2597 * Callback for modifier transmission from a guest to PSYC.
2600 guest_transmit_notify_mod (void *cls, uint16_t *data_size, void *data,
2601 uint8_t *oper, uint32_t *full_value_size)
2603 int ret = psyc_transmit_notify_mod (cls, data_size, data,
2604 oper, full_value_size);
2605 if (GNUNET_SYSERR == ret)
2607 struct Guest *gst = cls;
2608 gst->tmit_handle = NULL;
2615 * Get method part of next message from transmission queue.
2620 * @return #GNUNET_OK on success
2621 * #GNUNET_NO if there are no more messages in queue.
2622 * #GNUNET_SYSERR if the next message is malformed.
2624 static struct GNUNET_PSYC_MessageMethod *
2625 psyc_transmit_queue_next_method (struct Place *plc)
2627 struct MessageTransmitQueue *tmit_msg = plc->tmit_msgs_head;
2628 if (NULL == tmit_msg)
2631 struct FragmentTransmitQueue *tmit_frag = tmit_msg->frags_head;
2632 if (NULL == tmit_frag)
2638 struct GNUNET_MessageHeader *pmsg = tmit_frag->next_part;
2640 || GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD != ntohs (pmsg->type))
2642 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2643 "%p psyc_transmit_queue_next_method: unexpected message part of type %u.\n",
2644 plc, NULL != pmsg ? ntohs (pmsg->type) : 0);
2649 uint16_t psize = ntohs (pmsg->size);
2650 struct GNUNET_PSYC_MessageMethod *
2651 pmeth = (struct GNUNET_PSYC_MessageMethod *) GNUNET_copy_message (pmsg);
2653 if (psize < sizeof (*pmeth) + 1 || '\0' != *((char *) pmeth + psize - 1))
2655 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2656 "%p psyc_transmit_queue_next_method: invalid method name.\n",
2658 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2659 "%zu <= %u || NUL != %u\n",
2660 sizeof (*pmeth), psize, *((char *) pmeth + psize - 1));
2662 GNUNET_free (pmeth);
2666 psyc_transmit_queue_next_part (plc, tmit_msg, tmit_frag);
2672 * Transmit the next message in queue from the host to the PSYC channel.
2675 psyc_master_transmit_message (struct Host *hst)
2677 struct Place *plc = &hst->plc;
2679 if (NULL == hst->tmit_handle)
2681 struct GNUNET_PSYC_MessageMethod *
2682 pmeth = psyc_transmit_queue_next_method (plc);
2684 return GNUNET_SYSERR;
2686 hst->tmit_handle = (void *) &hst->tmit_handle;
2687 struct GNUNET_PSYC_MasterTransmitHandle *
2688 tmit_handle = GNUNET_PSYC_master_transmit (hst->master, (const char *) &pmeth[1],
2689 &host_transmit_notify_mod,
2690 &host_transmit_notify_data, hst,
2692 if (NULL != hst->tmit_handle)
2693 hst->tmit_handle = tmit_handle;
2694 GNUNET_free (pmeth);
2698 GNUNET_PSYC_master_transmit_resume (hst->tmit_handle);
2705 * Transmit the next message in queue from a guest to the PSYC channel.
2708 psyc_slave_transmit_message (struct Guest *gst)
2710 struct Place *plc = &gst->plc;
2712 if (NULL == gst->tmit_handle)
2714 struct GNUNET_PSYC_MessageMethod *
2715 pmeth = psyc_transmit_queue_next_method (plc);
2717 return GNUNET_SYSERR;
2719 gst->tmit_handle = (void *) &gst->tmit_handle;
2720 struct GNUNET_PSYC_SlaveTransmitHandle *
2721 tmit_handle = GNUNET_PSYC_slave_transmit (gst->slave, (const char *) &pmeth[1],
2722 &guest_transmit_notify_mod,
2723 &guest_transmit_notify_data, gst,
2725 if (NULL != gst->tmit_handle)
2726 gst->tmit_handle = tmit_handle;
2727 GNUNET_free (pmeth);
2731 GNUNET_PSYC_slave_transmit_resume (gst->tmit_handle);
2738 * Transmit a message to PSYC.
2741 psyc_transmit_message (struct Place *plc)
2745 ? psyc_master_transmit_message ((struct Host *) plc)
2746 : psyc_slave_transmit_message ((struct Guest *) plc);
2751 * Queue message parts for sending to PSYC.
2753 * @param plc Place to send to.
2754 * @param client Client the message originates from.
2755 * @param data_size Size of @a data.
2756 * @param data Concatenated message parts.
2757 * @param first_ptype First message part type in @a data.
2758 * @param last_ptype Last message part type in @a data.
2760 static struct MessageTransmitQueue *
2761 psyc_transmit_queue_message (struct Place *plc,
2762 struct GNUNET_SERVER_Client *client,
2765 uint16_t first_ptype, uint16_t last_ptype,
2766 struct MessageTransmitQueue *tmit_msg)
2768 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD == first_ptype)
2770 tmit_msg = GNUNET_malloc (sizeof (*tmit_msg));
2771 GNUNET_CONTAINER_DLL_insert_tail (plc->tmit_msgs_head, plc->tmit_msgs_tail, tmit_msg);
2773 else if (NULL == tmit_msg)
2778 struct FragmentTransmitQueue *
2779 tmit_frag = GNUNET_malloc (sizeof (*tmit_frag) + data_size);
2780 GNUNET_memcpy (&tmit_frag[1], data, data_size);
2781 tmit_frag->next_part = (struct GNUNET_MessageHeader *) &tmit_frag[1];
2782 tmit_frag->client = client;
2783 tmit_frag->size = data_size;
2785 GNUNET_CONTAINER_DLL_insert_tail (tmit_msg->frags_head, tmit_msg->frags_tail, tmit_frag);
2786 tmit_msg->client = client;
2792 * Cancel transmission of current message to PSYC.
2794 * @param plc Place to send to.
2795 * @param client Client the message originates from.
2798 psyc_transmit_cancel (struct Place *plc, struct GNUNET_SERVER_Client *client)
2800 uint16_t type = GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_CANCEL;
2802 struct GNUNET_MessageHeader msg;
2803 msg.size = htons (sizeof (msg));
2804 msg.type = htons (type);
2806 psyc_transmit_queue_message (plc, client, sizeof (msg), &msg, type, type, NULL);
2807 psyc_transmit_message (plc);
2809 /* FIXME: cleanup */
2814 * Handle an incoming message from a client, to be transmitted to the place.
2817 client_recv_psyc_message (void *cls, struct GNUNET_SERVER_Client *client,
2818 const struct GNUNET_MessageHeader *msg)
2821 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2822 GNUNET_assert (NULL != ctx);
2823 struct Place *plc = ctx->plc;
2824 int ret = GNUNET_SYSERR;
2826 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2827 "%p Received message from client.\n", plc);
2828 GNUNET_PSYC_log_message (GNUNET_ERROR_TYPE_DEBUG, msg);
2830 if (GNUNET_YES != plc->is_ready)
2832 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2833 "%p Place is not ready yet, disconnecting client.\n", plc);
2835 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2839 uint16_t size = ntohs (msg->size);
2840 uint16_t psize = size - sizeof (*msg);
2841 if (psize < sizeof (struct GNUNET_MessageHeader)
2842 || GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD < psize)
2844 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2845 "%p Received message with invalid payload size (%u) from client.\n",
2848 psyc_transmit_cancel (plc, client);
2849 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2853 uint16_t first_ptype = 0, last_ptype = 0;
2855 == GNUNET_PSYC_receive_check_parts (psize, (const char *) &msg[1],
2856 &first_ptype, &last_ptype))
2858 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2859 "%p Received invalid message part from client.\n", plc);
2861 psyc_transmit_cancel (plc, client);
2862 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2865 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2866 "%p Received message with first part type %u and last part type %u.\n",
2867 plc, first_ptype, last_ptype);
2870 = psyc_transmit_queue_message (plc, client, psize, &msg[1],
2871 first_ptype, last_ptype, ctx->tmit_msg);
2872 if (NULL != ctx->tmit_msg)
2874 if (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END <= last_ptype)
2875 ctx->tmit_msg = NULL;
2876 ret = psyc_transmit_message (plc);
2879 if (GNUNET_OK != ret)
2881 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2882 "%p Received invalid message part from client.\n", plc);
2884 psyc_transmit_cancel (plc, client);
2885 ret = GNUNET_SYSERR;
2887 GNUNET_SERVER_receive_done (client, ret);
2892 * A historic message arrived from PSYC.
2895 psyc_recv_history_message (void *cls, const struct GNUNET_PSYC_MessageHeader *msg)
2897 struct OperationClosure *opcls = cls;
2898 struct Place *plc = opcls->plc;
2900 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2901 "%p Received historic message #%" PRId64 " (flags: %x)\n",
2902 plc, GNUNET_ntohll (msg->message_id), ntohl (msg->flags));
2904 uint16_t size = ntohs (msg->header.size);
2906 struct GNUNET_OperationResultMessage *
2907 res = GNUNET_malloc (sizeof (*res) + size);
2908 res->header.size = htons (sizeof (*res) + size);
2909 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT);
2910 res->op_id = opcls->op_id;
2911 res->result_code = GNUNET_htonll (GNUNET_OK);
2913 GNUNET_memcpy (&res[1], msg, size);
2915 /** @todo FIXME: send only to requesting client */
2916 place_send_msg (plc, &res->header);
2923 * Result of message history replay from PSYC.
2926 psyc_recv_history_result (void *cls, int64_t result,
2927 const void *err_msg, uint16_t err_msg_size)
2929 struct OperationClosure *opcls = cls;
2930 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2931 "%p History replay #%" PRIu64 ": "
2932 "PSYCstore returned %" PRId64 " (%.*s)\n",
2933 opcls->plc, GNUNET_ntohll (opcls->op_id), result,
2934 err_msg_size, (const char *) err_msg);
2936 // FIXME: place might have been destroyed
2937 client_send_result (opcls->client, opcls->op_id, result, err_msg, err_msg_size);
2942 * Client requests channel history.
2945 client_recv_history_replay (void *cls, struct GNUNET_SERVER_Client *client,
2946 const struct GNUNET_MessageHeader *msg)
2949 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
2950 GNUNET_assert (NULL != ctx);
2951 struct Place *plc = ctx->plc;
2953 const struct GNUNET_PSYC_HistoryRequestMessage *
2954 req = (const struct GNUNET_PSYC_HistoryRequestMessage *) msg;
2955 uint16_t size = ntohs (msg->size);
2956 const char *method_prefix = (const char *) &req[1];
2958 if (size < sizeof (*req) + 1
2959 || '\0' != method_prefix[size - sizeof (*req) - 1])
2961 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2962 "%p History replay #%" PRIu64 ": "
2963 "invalid method prefix. size: %u < %zu?\n",
2964 plc, GNUNET_ntohll (req->op_id), size, sizeof (*req) + 1);
2966 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
2970 struct OperationClosure *opcls = GNUNET_malloc (sizeof (*opcls));
2971 opcls->client = client;
2973 opcls->op_id = req->op_id;
2974 opcls->flags = ntohl (req->flags);
2976 if (0 == req->message_limit)
2977 GNUNET_PSYC_channel_history_replay (plc->channel,
2978 GNUNET_ntohll (req->start_message_id),
2979 GNUNET_ntohll (req->end_message_id),
2980 method_prefix, opcls->flags,
2981 psyc_recv_history_message, NULL,
2982 psyc_recv_history_result, opcls);
2984 GNUNET_PSYC_channel_history_replay_latest (plc->channel,
2985 GNUNET_ntohll (req->message_limit),
2986 method_prefix, opcls->flags,
2987 psyc_recv_history_message, NULL,
2988 psyc_recv_history_result, opcls);
2990 GNUNET_SERVER_receive_done (client, GNUNET_OK);
2995 * A state variable part arrived from PSYC.
2998 psyc_recv_state_var (void *cls,
2999 const struct GNUNET_MessageHeader *mod,
3002 uint32_t value_size,
3003 uint32_t full_value_size)
3005 struct OperationClosure *opcls = cls;
3006 struct Place *plc = opcls->plc;
3008 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3009 "%p Received state variable %s from PSYC\n",
3012 uint16_t size = ntohs (mod->size);
3014 struct GNUNET_OperationResultMessage *
3015 res = GNUNET_malloc (sizeof (*res) + size);
3016 res->header.size = htons (sizeof (*res) + size);
3017 res->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT);
3018 res->op_id = opcls->op_id;
3019 res->result_code = GNUNET_htonll (GNUNET_OK);
3021 GNUNET_memcpy (&res[1], mod, size);
3023 /** @todo FIXME: send only to requesting client */
3024 place_send_msg (plc, &res->header);
3031 * Result of retrieving state variable from PSYC.
3034 psyc_recv_state_result (void *cls, int64_t result,
3035 const void *err_msg, uint16_t err_msg_size)
3037 struct OperationClosure *opcls = cls;
3038 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3039 "%p State get #%" PRIu64 ": "
3040 "PSYCstore returned %" PRId64 " (%.*s)\n",
3041 opcls->plc, GNUNET_ntohll (opcls->op_id), result,
3042 err_msg_size, (const char *) err_msg);
3044 // FIXME: place might have been destroyed
3045 client_send_result (opcls->client, opcls->op_id, result, err_msg, err_msg_size);
3050 * Client requests channel history.
3053 client_recv_state_get (void *cls, struct GNUNET_SERVER_Client *client,
3054 const struct GNUNET_MessageHeader *msg)
3057 ctx = GNUNET_SERVER_client_get_user_context (client, struct Client);
3058 GNUNET_assert (NULL != ctx);
3059 struct Place *plc = ctx->plc;
3061 const struct GNUNET_PSYC_StateRequestMessage *
3062 req = (const struct GNUNET_PSYC_StateRequestMessage *) msg;
3063 uint16_t size = ntohs (msg->size);
3064 const char *name = (const char *) &req[1];
3066 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3067 "%p State get #%" PRIu64 ": %s\n",
3068 plc, GNUNET_ntohll (req->op_id), name);
3070 if (size < sizeof (*req) + 1
3071 || '\0' != name[size - sizeof (*req) - 1])
3073 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3074 "%p State get #%" PRIu64 ": "
3075 "invalid name. size: %u < %zu?\n",
3076 plc, GNUNET_ntohll (req->op_id), size, sizeof (*req) + 1);
3078 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
3082 struct OperationClosure *opcls = GNUNET_malloc (sizeof (*opcls));
3083 opcls->client = client;
3085 opcls->op_id = req->op_id;
3087 switch (ntohs (msg->type))
3089 case GNUNET_MESSAGE_TYPE_PSYC_STATE_GET:
3090 GNUNET_PSYC_channel_state_get (plc->channel, name,
3091 psyc_recv_state_var,
3092 psyc_recv_state_result, opcls);
3095 case GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX:
3096 GNUNET_PSYC_channel_state_get_prefix (plc->channel, name,
3097 psyc_recv_state_var,
3098 psyc_recv_state_result, opcls);
3105 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3110 namestore_recv_records_store_result (void *cls, int32_t result,
3111 const char *err_msg)
3113 struct OperationClosure *ocls = cls;
3114 client_send_result (ocls->client, ocls->op_id, result, err_msg,
3115 (NULL != err_msg) ? strlen (err_msg) : 0);
3121 * Handle request to add PLACE record to GNS zone.
3124 client_recv_zone_add_place (void *cls, struct GNUNET_SERVER_Client *client,
3125 const struct GNUNET_MessageHeader *msg)
3127 const struct ZoneAddPlaceRequest *preq
3128 = (const struct ZoneAddPlaceRequest *) msg;
3130 uint16_t remaining = ntohs (preq->header.size) - sizeof (*preq);
3131 const char *p = (const char *) &preq[1];
3132 const char *name = NULL, *password = NULL;
3133 uint16_t offset = GNUNET_STRINGS_buffer_tokenize (p, remaining, 2,
3135 remaining -= offset;
3137 const struct GNUNET_PeerIdentity *
3138 relays = (const struct GNUNET_PeerIdentity *) p;
3139 uint16_t relay_size = ntohl (preq->relay_count) * sizeof (*relays);
3141 if (0 == offset || remaining != relay_size)
3144 client_send_result (client, preq->op_id, GNUNET_SYSERR, NULL, 0);
3145 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3149 struct GNUNET_GNSRECORD_Data rd = { };
3150 rd.record_type = GNUNET_GNSRECORD_TYPE_PLACE;
3151 rd.flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
3152 rd.expiration_time = GNUNET_ntohll (preq->expiration_time);
3154 struct GNUNET_GNSRECORD_PlaceData *
3155 rec = GNUNET_malloc (sizeof (*rec) + relay_size);
3156 rec->place_pub_key = preq->place_pub_key;
3157 rec->origin = this_peer;
3158 rec->relay_count = preq->relay_count;
3159 GNUNET_memcpy (&rec[1], relays, relay_size);
3162 rd.data_size = sizeof (*rec) + relay_size;
3164 struct GNUNET_HashCode ego_pub_hash;
3165 GNUNET_CRYPTO_hash (&preq->ego_pub_key, sizeof (preq->ego_pub_key), &ego_pub_hash);
3166 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3169 client_send_result (client, preq->op_id, GNUNET_SYSERR, NULL, 0);
3173 struct OperationClosure *ocls = GNUNET_malloc (sizeof (*ocls));
3174 ocls->client = client;
3175 ocls->op_id = preq->op_id;
3176 GNUNET_NAMESTORE_records_store (namestore, &ego->key,
3178 namestore_recv_records_store_result, ocls);
3179 /** @todo refresh stored records later */
3181 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3186 * Handle request to add PLACE record to GNS zone.
3189 client_recv_zone_add_nym (void *cls, struct GNUNET_SERVER_Client *client,
3190 const struct GNUNET_MessageHeader *msg)
3192 const struct ZoneAddNymRequest *nreq
3193 = (const struct ZoneAddNymRequest *) msg;
3195 uint16_t name_size = ntohs (nreq->header.size) - sizeof (*nreq);
3196 const char *name = NULL;
3197 uint16_t offset = GNUNET_STRINGS_buffer_tokenize ((const char *) &nreq[1],
3198 name_size, 1, &name);
3199 if (0 == offset || offset != name_size)
3202 client_send_result (client, nreq->op_id, GNUNET_SYSERR, NULL, 0);
3203 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3207 struct GNUNET_GNSRECORD_Data rd = { };
3208 rd.record_type = GNUNET_GNSRECORD_TYPE_PKEY;
3209 rd.flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
3210 rd.expiration_time = GNUNET_ntohll (nreq->expiration_time);
3211 rd.data = &nreq->nym_pub_key;
3212 rd.data_size = sizeof (nreq->nym_pub_key);
3214 struct GNUNET_HashCode ego_pub_hash;
3215 GNUNET_CRYPTO_hash (&nreq->ego_pub_key, sizeof (nreq->ego_pub_key), &ego_pub_hash);
3216 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3219 client_send_result (client, nreq->op_id, GNUNET_SYSERR, NULL, 0);
3223 struct OperationClosure *ocls = GNUNET_malloc (sizeof (*ocls));
3224 ocls->client = client;
3225 ocls->op_id = nreq->op_id;
3226 GNUNET_NAMESTORE_records_store (namestore, &ego->key,
3228 namestore_recv_records_store_result, ocls);
3229 /** @todo refresh stored records later */
3231 GNUNET_SERVER_receive_done (client, GNUNET_OK);
3235 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
3236 { client_recv_host_enter, NULL,
3237 GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER, 0 },
3239 { client_recv_guest_enter, NULL,
3240 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER, 0 },
3242 { client_recv_guest_enter_by_name, NULL,
3243 GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER_BY_NAME, 0 },
3245 { client_recv_join_decision, NULL,
3246 GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION, 0 },
3248 { client_recv_psyc_message, NULL,
3249 GNUNET_MESSAGE_TYPE_PSYC_MESSAGE, 0 },
3251 { client_recv_history_replay, NULL,
3252 GNUNET_MESSAGE_TYPE_PSYC_HISTORY_REPLAY, 0 },
3254 { client_recv_state_get, NULL,
3255 GNUNET_MESSAGE_TYPE_PSYC_STATE_GET, 0 },
3257 { client_recv_state_get, NULL,
3258 GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX, 0 },
3260 { client_recv_zone_add_place, NULL,
3261 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_PLACE, 0 },
3263 { client_recv_zone_add_nym, NULL,
3264 GNUNET_MESSAGE_TYPE_SOCIAL_ZONE_ADD_NYM, 0 },
3266 { client_recv_app_connect, NULL,
3267 GNUNET_MESSAGE_TYPE_SOCIAL_APP_CONNECT, 0 },
3269 { client_recv_app_detach, NULL,
3270 GNUNET_MESSAGE_TYPE_SOCIAL_APP_DETACH, 0 },
3272 { client_recv_place_leave, NULL,
3273 GNUNET_MESSAGE_TYPE_SOCIAL_PLACE_LEAVE, 0 },
3275 { client_recv_msg_proc_set, NULL,
3276 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_SET, 0 },
3278 { client_recv_msg_proc_clear, NULL,
3279 GNUNET_MESSAGE_TYPE_SOCIAL_MSG_PROC_CLEAR, 0 },
3281 { NULL, NULL, 0, 0 }
3286 path_basename (const char *path)
3288 const char *basename = strrchr (path, DIR_SEPARATOR);
3289 if (NULL != basename)
3292 if (NULL == basename || '\0' == basename)
3299 struct PlaceLoadClosure
3302 const char *ego_pub_str;
3306 /** Load a place file */
3308 file_place_load (void *cls, const char *place_filename)
3310 struct PlaceLoadClosure *plcls = cls;
3312 const char *place_pub_str = path_basename (place_filename);
3313 if (NULL == place_pub_str)
3319 char *filename = NULL;
3320 GNUNET_asprintf (&filename, "%s%c" "%s%c" "%s%c" "%s",
3321 dir_social, DIR_SEPARATOR,
3322 "places", DIR_SEPARATOR,
3323 plcls->ego_pub_str, DIR_SEPARATOR,
3326 uint64_t file_size = 0;
3328 GNUNET_DISK_file_size (filename, &file_size, GNUNET_YES, GNUNET_YES)
3329 || file_size < sizeof (struct PlaceEnterRequest))
3331 GNUNET_free (filename);
3335 struct PlaceEnterRequest *ereq = GNUNET_malloc (file_size);
3336 ssize_t read_size = GNUNET_DISK_fn_read (filename, ereq, file_size);
3337 GNUNET_free (filename);
3338 if (read_size < 0 || read_size < sizeof (*ereq))
3344 uint16_t ereq_size = ntohs (ereq->header.size);
3345 if (read_size != ereq_size)
3351 switch (ntohs (ereq->header.type))
3353 case GNUNET_MESSAGE_TYPE_SOCIAL_HOST_ENTER:
3354 if (ereq_size < sizeof (struct HostEnterRequest))
3359 struct HostEnterRequest *hreq = (struct HostEnterRequest *) ereq;
3360 host_enter (hreq, NULL);
3363 case GNUNET_MESSAGE_TYPE_SOCIAL_GUEST_ENTER:
3364 if (ereq_size < sizeof (struct GuestEnterRequest))
3369 struct GuestEnterRequest *greq = (struct GuestEnterRequest *) ereq;
3370 guest_enter (greq, NULL);
3378 app_place_add (plcls->app_id, ereq);
3385 * Read @e place_pub_str entries in @a dir_ego
3388 * Data directory of an application ego.
3389 * $GNUNET_DATA_HOME/social/apps/$app_id/$ego_pub_str/
3392 scan_app_ego_dir (void *cls, const char *dir_ego)
3394 struct PlaceLoadClosure *plcls = cls;
3395 plcls->ego_pub_str = path_basename (dir_ego);
3397 if (NULL != plcls->ego_pub_str)
3398 GNUNET_DISK_directory_scan (dir_ego, file_place_load, plcls);
3404 * Read @e ego_pub_str entries in @a dir_app
3407 * Data directory of an application.
3408 * $GNUNET_DATA_HOME/social/apps/$app_id/
3411 scan_app_dir (void *cls, const char *dir_app)
3413 if (GNUNET_YES != GNUNET_DISK_directory_test (dir_app, GNUNET_YES))
3416 struct PlaceLoadClosure plcls;
3417 plcls.app_id = path_basename (dir_app);
3419 if (NULL != plcls.app_id)
3420 GNUNET_DISK_directory_scan (dir_app, scan_app_ego_dir, &plcls);
3427 identity_recv_ego (void *cls, struct GNUNET_IDENTITY_Ego *id_ego,
3428 void **ctx, const char *name)
3430 if (NULL == id_ego) // end of initial list of egos
3433 struct GNUNET_CRYPTO_EcdsaPublicKey ego_pub_key;
3434 GNUNET_IDENTITY_ego_get_public_key (id_ego, &ego_pub_key);
3436 struct GNUNET_HashCode ego_pub_hash;
3437 GNUNET_CRYPTO_hash (&ego_pub_key, sizeof (ego_pub_key), &ego_pub_hash);
3439 struct Ego *ego = GNUNET_CONTAINER_multihashmap_get (egos, &ego_pub_hash);
3442 GNUNET_free (ego->name);
3443 if (NULL == name) // deleted
3445 GNUNET_CONTAINER_multihashmap_remove (egos, &ego_pub_hash, ego);
3452 ego = GNUNET_malloc (sizeof (*ego));
3456 ego->key = *(GNUNET_IDENTITY_ego_get_private_key (id_ego));
3457 size_t name_size = strlen (name) + 1;
3458 ego->name = GNUNET_malloc (name_size);
3459 GNUNET_memcpy (ego->name, name, name_size);
3461 GNUNET_CONTAINER_multihashmap_put (egos, &ego_pub_hash, ego,
3462 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
3465 // FIXME: notify clients about changed ego
3470 * Connected to core service.
3473 core_connected (void *cls, const struct GNUNET_PeerIdentity *my_identity)
3475 this_peer = *my_identity;
3480 * Initialize the PSYC service.
3482 * @param cls Closure.
3483 * @param server The initialized server.
3484 * @param c Configuration to use.
3487 run (void *cls, struct GNUNET_SERVER_Handle *server,
3488 const struct GNUNET_CONFIGURATION_Handle *c)
3492 hosts = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
3493 guests = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
3494 place_guests = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3496 egos = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3497 apps = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
3498 places = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3499 apps_places = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3500 places_apps = GNUNET_CONTAINER_multihashmap_create(1, GNUNET_NO);
3502 core = GNUNET_CORE_connect (cfg, NULL, core_connected, NULL, NULL,
3503 NULL, GNUNET_NO, NULL, GNUNET_NO, NULL);
3504 id = GNUNET_IDENTITY_connect (cfg, &identity_recv_ego, NULL);
3505 gns = GNUNET_GNS_connect (cfg);
3506 namestore = GNUNET_NAMESTORE_connect (cfg);
3507 stats = GNUNET_STATISTICS_create ("social", cfg);
3510 GNUNET_CONFIGURATION_get_value_filename (cfg, "social", "DATA_HOME",
3513 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
3514 "social", "DATA_HOME");
3518 GNUNET_asprintf (&dir_places, "%s%c%s",
3519 dir_social, DIR_SEPARATOR, "places");
3520 GNUNET_asprintf (&dir_apps, "%s%c%s",
3521 dir_social, DIR_SEPARATOR, "apps");
3523 GNUNET_DISK_directory_scan (dir_apps, scan_app_dir, NULL);
3525 nc = GNUNET_SERVER_notification_context_create (server, 1);
3526 GNUNET_SERVER_add_handlers (server, handlers);
3527 GNUNET_SERVER_disconnect_notify (server, &client_disconnect, NULL);
3528 GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
3533 * The main function for the service.
3535 * @param argc number of arguments from the command line
3536 * @param argv command line arguments
3537 * @return 0 ok, 1 on error
3540 main (int argc, char *const *argv)
3542 return (GNUNET_OK ==
3543 GNUNET_SERVICE_run (argc, argv, "social",
3544 GNUNET_SERVICE_OPTION_NONE,
3545 &run, NULL)) ? 0 : 1;
3548 /* end of gnunet-service-social.c */