diff options
Diffstat (limited to 'src/messenger/gnunet-service-messenger_room.c')
-rw-r--r-- | src/messenger/gnunet-service-messenger_room.c | 1255 |
1 files changed, 0 insertions, 1255 deletions
diff --git a/src/messenger/gnunet-service-messenger_room.c b/src/messenger/gnunet-service-messenger_room.c deleted file mode 100644 index 7f2fd0ca6..000000000 --- a/src/messenger/gnunet-service-messenger_room.c +++ /dev/null | |||
@@ -1,1255 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2020--2021 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
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 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | /** | ||
21 | * @author Tobias Frisch | ||
22 | * @file src/messenger/gnunet-service-messenger_room.c | ||
23 | * @brief GNUnet MESSENGER service | ||
24 | */ | ||
25 | |||
26 | #include "gnunet-service-messenger_room.h" | ||
27 | |||
28 | #include "gnunet-service-messenger_member.h" | ||
29 | #include "gnunet-service-messenger_member_session.h" | ||
30 | |||
31 | #include "gnunet-service-messenger_message_kind.h" | ||
32 | #include "gnunet-service-messenger_message_handle.h" | ||
33 | #include "gnunet-service-messenger_message_send.h" | ||
34 | |||
35 | #include "gnunet-service-messenger_operation.h" | ||
36 | |||
37 | #include "gnunet-service-messenger.h" | ||
38 | #include "gnunet-service-messenger_service.h" | ||
39 | #include "gnunet-service-messenger_tunnel.h" | ||
40 | #include "messenger_api_util.h" | ||
41 | |||
42 | static void | ||
43 | idle_request_room_messages (void *cls); | ||
44 | |||
45 | struct GNUNET_MESSENGER_SrvRoom* | ||
46 | create_room (struct GNUNET_MESSENGER_SrvHandle *handle, | ||
47 | const struct GNUNET_HashCode *key) | ||
48 | { | ||
49 | GNUNET_assert((handle) && (key)); | ||
50 | |||
51 | struct GNUNET_MESSENGER_SrvRoom *room = GNUNET_new(struct GNUNET_MESSENGER_SrvRoom); | ||
52 | |||
53 | room->service = handle->service; | ||
54 | room->host = handle; | ||
55 | room->port = NULL; | ||
56 | |||
57 | GNUNET_memcpy(&(room->key), key, sizeof(struct GNUNET_HashCode)); | ||
58 | |||
59 | room->tunnels = GNUNET_CONTAINER_multipeermap_create (8, GNUNET_NO); | ||
60 | |||
61 | init_member_store(get_room_member_store(room), room); | ||
62 | init_message_store (get_room_message_store(room)); | ||
63 | init_operation_store(get_room_operation_store(room), room); | ||
64 | |||
65 | init_list_tunnels (&(room->basement)); | ||
66 | init_message_state(&(room->state)); | ||
67 | |||
68 | room->peer_message = NULL; | ||
69 | |||
70 | init_list_messages (&(room->handling)); | ||
71 | room->idle = NULL; | ||
72 | |||
73 | if (room->service->dir) | ||
74 | load_room (room); | ||
75 | |||
76 | room->idle = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_IDLE, idle_request_room_messages, room); | ||
77 | |||
78 | return room; | ||
79 | } | ||
80 | |||
81 | static int | ||
82 | iterate_destroy_tunnels (void *cls, | ||
83 | const struct GNUNET_PeerIdentity *key, | ||
84 | void *value) | ||
85 | { | ||
86 | struct GNUNET_MESSENGER_SrvTunnel *tunnel = value; | ||
87 | destroy_tunnel (tunnel); | ||
88 | return GNUNET_YES; | ||
89 | } | ||
90 | |||
91 | static void | ||
92 | handle_room_messages (struct GNUNET_MESSENGER_SrvRoom *room); | ||
93 | |||
94 | void | ||
95 | destroy_room (struct GNUNET_MESSENGER_SrvRoom *room) | ||
96 | { | ||
97 | GNUNET_assert(room); | ||
98 | |||
99 | if (room->idle) | ||
100 | { | ||
101 | GNUNET_SCHEDULER_cancel (room->idle); | ||
102 | |||
103 | room->idle = NULL; | ||
104 | } | ||
105 | |||
106 | if (room->port) | ||
107 | GNUNET_CADET_close_port (room->port); | ||
108 | |||
109 | GNUNET_CONTAINER_multipeermap_iterate (room->tunnels, iterate_destroy_tunnels, NULL); | ||
110 | |||
111 | handle_room_messages (room); | ||
112 | |||
113 | if (room->service->dir) | ||
114 | save_room (room); | ||
115 | |||
116 | clear_member_store (get_room_member_store(room)); | ||
117 | clear_message_store (get_room_message_store(room)); | ||
118 | clear_operation_store(get_room_operation_store(room)); | ||
119 | |||
120 | GNUNET_CONTAINER_multipeermap_destroy (room->tunnels); | ||
121 | |||
122 | clear_list_tunnels (&(room->basement)); | ||
123 | clear_message_state(&(room->state)); | ||
124 | |||
125 | if (room->peer_message) | ||
126 | GNUNET_free(room->peer_message); | ||
127 | |||
128 | GNUNET_free(room); | ||
129 | } | ||
130 | |||
131 | struct GNUNET_MESSENGER_MemberStore* | ||
132 | get_room_member_store (struct GNUNET_MESSENGER_SrvRoom *room) | ||
133 | { | ||
134 | GNUNET_assert(room); | ||
135 | |||
136 | return &(room->member_store); | ||
137 | } | ||
138 | |||
139 | struct GNUNET_MESSENGER_MessageStore* | ||
140 | get_room_message_store (struct GNUNET_MESSENGER_SrvRoom *room) | ||
141 | { | ||
142 | GNUNET_assert(room); | ||
143 | |||
144 | return &(room->message_store); | ||
145 | } | ||
146 | |||
147 | struct GNUNET_MESSENGER_OperationStore* | ||
148 | get_room_operation_store (struct GNUNET_MESSENGER_SrvRoom *room) | ||
149 | { | ||
150 | GNUNET_assert(room); | ||
151 | |||
152 | return &(room->operation_store); | ||
153 | } | ||
154 | |||
155 | static int | ||
156 | send_room_info (struct GNUNET_MESSENGER_SrvRoom *room, | ||
157 | struct GNUNET_MESSENGER_SrvHandle *handle, | ||
158 | struct GNUNET_MESSENGER_SrvTunnel *tunnel) | ||
159 | { | ||
160 | if ((!handle) || (!is_tunnel_connected (tunnel))) | ||
161 | return GNUNET_NO; | ||
162 | |||
163 | return send_tunnel_message (tunnel, handle, create_message_info (get_handle_ego (handle))); | ||
164 | } | ||
165 | |||
166 | static void* | ||
167 | callback_room_connect (void *cls, | ||
168 | struct GNUNET_CADET_Channel *channel, | ||
169 | const struct GNUNET_PeerIdentity *source) | ||
170 | { | ||
171 | struct GNUNET_MESSENGER_SrvRoom *room = cls; | ||
172 | |||
173 | struct GNUNET_MESSENGER_SrvTunnel *tunnel = create_tunnel (room, source); | ||
174 | |||
175 | if ((tunnel) && | ||
176 | (GNUNET_OK != GNUNET_CONTAINER_multipeermap_put (room->tunnels, source, tunnel, | ||
177 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE))) | ||
178 | { | ||
179 | destroy_tunnel (tunnel); | ||
180 | tunnel = NULL; | ||
181 | } | ||
182 | |||
183 | if (!tunnel) | ||
184 | { | ||
185 | delayed_disconnect_channel (channel); | ||
186 | return NULL; | ||
187 | } | ||
188 | |||
189 | bind_tunnel(tunnel, channel); | ||
190 | |||
191 | GNUNET_log(GNUNET_ERROR_TYPE_INFO, "New tunnel in room (%s) established to peer: %s\n", | ||
192 | GNUNET_h2s(get_room_key(room)), GNUNET_i2s (source)); | ||
193 | |||
194 | if (GNUNET_YES == send_room_info (room, room->host, tunnel)) | ||
195 | return tunnel; | ||
196 | |||
197 | disconnect_tunnel (tunnel); | ||
198 | |||
199 | if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_remove (room->tunnels, source, tunnel)) | ||
200 | destroy_tunnel (tunnel); | ||
201 | |||
202 | return NULL; | ||
203 | } | ||
204 | |||
205 | static int | ||
206 | join_room (struct GNUNET_MESSENGER_SrvRoom *room, | ||
207 | struct GNUNET_MESSENGER_SrvHandle *handle, | ||
208 | struct GNUNET_MESSENGER_Member *member) | ||
209 | { | ||
210 | GNUNET_assert((room) && (handle) && (member)); | ||
211 | |||
212 | GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Joining room: %s (%s)\n", GNUNET_h2s (get_room_key (room)), | ||
213 | GNUNET_sh2s (get_member_id(member))); | ||
214 | |||
215 | const struct GNUNET_ShortHashCode *member_id = get_member_id(member); | ||
216 | |||
217 | if (GNUNET_OK != change_handle_member_id (handle, get_room_key(room), member_id)) | ||
218 | return GNUNET_NO; | ||
219 | |||
220 | struct GNUNET_MESSENGER_Message *message = create_message_join (get_handle_ego (handle)); | ||
221 | |||
222 | if (!message) | ||
223 | { | ||
224 | GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Your join message could not be created!\n"); | ||
225 | |||
226 | return GNUNET_NO; | ||
227 | } | ||
228 | |||
229 | GNUNET_memcpy(&(message->header.sender_id), member_id, sizeof(*member_id)); | ||
230 | return send_room_message (room, handle, message); | ||
231 | } | ||
232 | |||
233 | struct GNUNET_MESSENGER_MemberNotify | ||
234 | { | ||
235 | struct GNUNET_MESSENGER_SrvRoom *room; | ||
236 | struct GNUNET_MESSENGER_SrvHandle *handle; | ||
237 | struct GNUNET_MESSENGER_MemberSession *session; | ||
238 | }; | ||
239 | |||
240 | static void | ||
241 | notify_about_members (struct GNUNET_MESSENGER_MemberNotify *notify, | ||
242 | struct GNUNET_MESSENGER_MemberSession *session, | ||
243 | struct GNUNET_CONTAINER_MultiHashMap *map, | ||
244 | int check_permission) | ||
245 | { | ||
246 | if (session->prev) | ||
247 | notify_about_members (notify, session->prev, map, GNUNET_YES); | ||
248 | |||
249 | struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(notify->room); | ||
250 | struct GNUNET_MESSENGER_ListMessage *element; | ||
251 | |||
252 | for (element = session->messages.head; element; element = element->next) | ||
253 | { | ||
254 | if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(map, &(element->hash))) | ||
255 | continue; | ||
256 | |||
257 | if ((GNUNET_YES == check_permission) && | ||
258 | (GNUNET_YES != check_member_session_history(notify->session, &(element->hash), GNUNET_NO))) | ||
259 | continue; | ||
260 | |||
261 | if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put(map, &(element->hash), NULL, | ||
262 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST)) | ||
263 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Notification of session message could be duplicated!\n"); | ||
264 | |||
265 | const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, &(element->hash)); | ||
266 | |||
267 | if (message) | ||
268 | notify_handle_message (notify->handle, notify->room, session, message, &(element->hash)); | ||
269 | } | ||
270 | } | ||
271 | |||
272 | static int | ||
273 | iterate_notify_about_members (void *cls, | ||
274 | const struct GNUNET_IDENTITY_PublicKey *public_key, | ||
275 | struct GNUNET_MESSENGER_MemberSession *session) | ||
276 | { | ||
277 | struct GNUNET_MESSENGER_MemberNotify *notify = cls; | ||
278 | |||
279 | if ((notify->session == session) || (GNUNET_YES == is_member_session_completed(session))) | ||
280 | return GNUNET_YES; | ||
281 | |||
282 | struct GNUNET_CONTAINER_MultiHashMap *map = GNUNET_CONTAINER_multihashmap_create(4, GNUNET_NO); | ||
283 | |||
284 | notify_about_members (notify, session, map, GNUNET_NO); | ||
285 | |||
286 | GNUNET_CONTAINER_multihashmap_destroy(map); | ||
287 | return GNUNET_YES; | ||
288 | } | ||
289 | |||
290 | static int | ||
291 | join_room_locally (struct GNUNET_MESSENGER_SrvRoom *room, | ||
292 | struct GNUNET_MESSENGER_SrvHandle *handle) | ||
293 | { | ||
294 | const struct GNUNET_ShortHashCode *member_id = get_handle_member_id (handle, get_room_key(room)); | ||
295 | |||
296 | struct GNUNET_MESSENGER_MemberStore *member_store = get_room_member_store(room); | ||
297 | struct GNUNET_MESSENGER_Member *member = add_store_member(member_store, member_id); | ||
298 | |||
299 | if (GNUNET_NO == join_room (room, handle, member)) | ||
300 | return GNUNET_NO; | ||
301 | |||
302 | const struct GNUNET_MESSENGER_Ego *ego = get_handle_ego(handle); | ||
303 | struct GNUNET_MESSENGER_MemberSession *session = get_member_session (member, &(ego->pub)); | ||
304 | |||
305 | if (!session) | ||
306 | { | ||
307 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "A valid session is required to join a room!\n"); | ||
308 | return GNUNET_NO; | ||
309 | } | ||
310 | |||
311 | struct GNUNET_MESSENGER_MemberNotify notify; | ||
312 | |||
313 | notify.room = room; | ||
314 | notify.handle = handle; | ||
315 | notify.session = session; | ||
316 | |||
317 | iterate_store_members(get_room_member_store(room), iterate_notify_about_members, ¬ify); | ||
318 | |||
319 | return GNUNET_YES; | ||
320 | } | ||
321 | |||
322 | extern int | ||
323 | check_tunnel_message (void *cls, | ||
324 | const struct GNUNET_MessageHeader *header); | ||
325 | |||
326 | extern void | ||
327 | handle_tunnel_message (void *cls, | ||
328 | const struct GNUNET_MessageHeader *header); | ||
329 | |||
330 | extern void | ||
331 | callback_tunnel_disconnect (void *cls, | ||
332 | const struct GNUNET_CADET_Channel *channel); | ||
333 | |||
334 | int | ||
335 | open_room (struct GNUNET_MESSENGER_SrvRoom *room, | ||
336 | struct GNUNET_MESSENGER_SrvHandle *handle) | ||
337 | { | ||
338 | GNUNET_assert((room) && (handle)); | ||
339 | |||
340 | if (room->port) | ||
341 | return join_room_locally (room, handle); | ||
342 | |||
343 | struct GNUNET_CADET_Handle *cadet = get_room_cadet (room); | ||
344 | const struct GNUNET_HashCode *key = get_room_key (room); | ||
345 | |||
346 | struct GNUNET_MQ_MessageHandler handlers[] = { GNUNET_MQ_hd_var_size(tunnel_message, GNUNET_MESSAGE_TYPE_CADET_CLI, | ||
347 | struct GNUNET_MessageHeader, NULL), | ||
348 | GNUNET_MQ_handler_end() }; | ||
349 | |||
350 | struct GNUNET_HashCode port; | ||
351 | convert_messenger_key_to_port(key, &port); | ||
352 | room->port = GNUNET_CADET_open_port (cadet, &port, callback_room_connect, room, NULL, callback_tunnel_disconnect, | ||
353 | handlers); | ||
354 | |||
355 | if (room->port) | ||
356 | GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Port of room (%s) was opened!\n", | ||
357 | GNUNET_h2s(get_room_key(room))); | ||
358 | else | ||
359 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Port of room (%s) could not be opened!\n", | ||
360 | GNUNET_h2s(get_room_key(room))); | ||
361 | |||
362 | const struct GNUNET_ShortHashCode *member_id = get_handle_member_id (handle, get_room_key(room)); | ||
363 | |||
364 | struct GNUNET_MESSENGER_MemberStore *member_store = get_room_member_store(room); | ||
365 | struct GNUNET_MESSENGER_Member *member = add_store_member(member_store, member_id); | ||
366 | |||
367 | if ((GNUNET_NO == join_room (room, handle, member)) && (room->port)) | ||
368 | { | ||
369 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "You could not join the room, therefore it keeps closed!\n"); | ||
370 | |||
371 | GNUNET_CADET_close_port (room->port); | ||
372 | room->port = NULL; | ||
373 | |||
374 | return GNUNET_NO; | ||
375 | } | ||
376 | |||
377 | struct GNUNET_MESSENGER_Message *peer_msg = create_message_peer (room->service); | ||
378 | GNUNET_memcpy(&(peer_msg->header.sender_id), member_id, sizeof(*member_id)); | ||
379 | return (room->port ? send_room_message (room, handle, peer_msg) : GNUNET_NO); | ||
380 | } | ||
381 | |||
382 | int | ||
383 | enter_room_at (struct GNUNET_MESSENGER_SrvRoom *room, | ||
384 | struct GNUNET_MESSENGER_SrvHandle *handle, | ||
385 | const struct GNUNET_PeerIdentity *door) | ||
386 | { | ||
387 | GNUNET_assert((room) && (handle) && (door)); | ||
388 | |||
389 | struct GNUNET_PeerIdentity peer; | ||
390 | |||
391 | if ((GNUNET_OK == get_service_peer_identity (room->service, &peer)) && | ||
392 | (0 == GNUNET_memcmp(&peer, door))) | ||
393 | return join_room_locally (room, handle); | ||
394 | |||
395 | struct GNUNET_MESSENGER_SrvTunnel *tunnel = GNUNET_CONTAINER_multipeermap_get (room->tunnels, door); | ||
396 | |||
397 | if (!tunnel) | ||
398 | { | ||
399 | tunnel = create_tunnel (room, door); | ||
400 | |||
401 | if (GNUNET_OK != GNUNET_CONTAINER_multipeermap_put (room->tunnels, door, tunnel, | ||
402 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE)) | ||
403 | { | ||
404 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "You could not connect to that door!\n"); | ||
405 | destroy_tunnel (tunnel); | ||
406 | return GNUNET_NO; | ||
407 | } | ||
408 | } | ||
409 | |||
410 | if (GNUNET_SYSERR == connect_tunnel (tunnel)) | ||
411 | { | ||
412 | GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Connection failure during entrance!\n"); | ||
413 | GNUNET_CONTAINER_multipeermap_remove (room->tunnels, door, tunnel); | ||
414 | destroy_tunnel (tunnel); | ||
415 | return GNUNET_NO; | ||
416 | } | ||
417 | |||
418 | return join_room_locally (room, handle); | ||
419 | } | ||
420 | |||
421 | struct GNUNET_MQ_Envelope* | ||
422 | pack_room_message (const struct GNUNET_MESSENGER_SrvRoom *room, | ||
423 | const struct GNUNET_MESSENGER_SrvHandle *handle, | ||
424 | struct GNUNET_MESSENGER_Message *message, | ||
425 | struct GNUNET_HashCode *hash, | ||
426 | int mode) | ||
427 | { | ||
428 | GNUNET_assert((room) && (handle) && (message) && (hash)); | ||
429 | |||
430 | message->header.timestamp = GNUNET_TIME_absolute_hton (GNUNET_TIME_absolute_get ()); | ||
431 | |||
432 | const struct GNUNET_ShortHashCode *id = get_handle_member_id (handle, get_room_key(room)); | ||
433 | |||
434 | GNUNET_assert(id); | ||
435 | |||
436 | GNUNET_memcpy(&(message->header.sender_id), id, sizeof(struct GNUNET_ShortHashCode)); | ||
437 | get_message_state_chain_hash (&(room->state), &(message->header.previous)); | ||
438 | |||
439 | return pack_message (message, hash, get_handle_ego (handle), mode); | ||
440 | } | ||
441 | |||
442 | struct GNUNET_MESSENGER_ClosureSendRoom | ||
443 | { | ||
444 | struct GNUNET_MESSENGER_SrvRoom *room; | ||
445 | struct GNUNET_MESSENGER_SrvHandle *handle; | ||
446 | struct GNUNET_MESSENGER_SrvTunnel *exclude; | ||
447 | struct GNUNET_MESSENGER_Message *message; | ||
448 | struct GNUNET_HashCode *hash; | ||
449 | int packed; | ||
450 | }; | ||
451 | |||
452 | static int | ||
453 | iterate_send_room_message (void *cls, | ||
454 | const struct GNUNET_PeerIdentity *key, | ||
455 | void *value) | ||
456 | { | ||
457 | struct GNUNET_MESSENGER_SrvTunnel *tunnel = value; | ||
458 | |||
459 | if ((!is_tunnel_connected (tunnel)) || | ||
460 | (get_tunnel_messenger_version(tunnel) < GNUNET_MESSENGER_VERSION)) | ||
461 | return GNUNET_YES; | ||
462 | |||
463 | struct GNUNET_MESSENGER_ClosureSendRoom *closure = cls; | ||
464 | |||
465 | if (tunnel == closure->exclude) | ||
466 | return GNUNET_YES; | ||
467 | |||
468 | struct GNUNET_MQ_Envelope *env = NULL; | ||
469 | |||
470 | if (closure->packed == GNUNET_NO) | ||
471 | { | ||
472 | env = pack_room_message (closure->room, closure->handle, closure->message, closure->hash, | ||
473 | GNUNET_MESSENGER_PACK_MODE_ENVELOPE); | ||
474 | |||
475 | if (env) | ||
476 | closure->packed = GNUNET_YES; | ||
477 | } | ||
478 | else | ||
479 | env = pack_message (closure->message, NULL, NULL, GNUNET_MESSENGER_PACK_MODE_ENVELOPE); | ||
480 | |||
481 | if (env) | ||
482 | send_tunnel_envelope (tunnel, env, closure->hash); | ||
483 | |||
484 | return GNUNET_YES; | ||
485 | } | ||
486 | |||
487 | int | ||
488 | update_room_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
489 | struct GNUNET_MESSENGER_Message *message, | ||
490 | const struct GNUNET_HashCode *hash); | ||
491 | |||
492 | void | ||
493 | callback_room_handle_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
494 | struct GNUNET_MESSENGER_SrvHandle *handle, | ||
495 | const struct GNUNET_MESSENGER_Message *message, | ||
496 | const struct GNUNET_HashCode *hash); | ||
497 | |||
498 | int | ||
499 | send_room_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
500 | struct GNUNET_MESSENGER_SrvHandle *handle, | ||
501 | struct GNUNET_MESSENGER_Message *message) | ||
502 | { | ||
503 | GNUNET_assert((room) && (handle)); | ||
504 | |||
505 | if (!message) | ||
506 | return GNUNET_NO; | ||
507 | |||
508 | if (GNUNET_YES == is_message_session_bound(message)) | ||
509 | merge_room_last_messages(room, handle); | ||
510 | |||
511 | GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Sending message from handle with member id: %s\n", | ||
512 | GNUNET_sh2s(get_handle_member_id(handle, get_room_key(room)))); | ||
513 | |||
514 | struct GNUNET_HashCode hash; | ||
515 | struct GNUNET_MESSENGER_ClosureSendRoom closure; | ||
516 | |||
517 | closure.room = room; | ||
518 | closure.handle = handle; | ||
519 | closure.exclude = NULL; | ||
520 | closure.message = message; | ||
521 | closure.hash = &hash; | ||
522 | closure.packed = GNUNET_NO; | ||
523 | |||
524 | GNUNET_CONTAINER_multipeermap_iterate (room->tunnels, iterate_send_room_message, &closure); | ||
525 | |||
526 | if (GNUNET_NO == closure.packed) | ||
527 | pack_room_message (room, handle, message, &hash, GNUNET_MESSENGER_PACK_MODE_UNKNOWN); | ||
528 | |||
529 | const int new_message = update_room_message (room, message, &hash); | ||
530 | |||
531 | if (GNUNET_YES != new_message) | ||
532 | return GNUNET_SYSERR; | ||
533 | |||
534 | switch (message->header.kind) | ||
535 | { | ||
536 | case GNUNET_MESSENGER_KIND_JOIN: | ||
537 | send_message_join (room, handle, message, &hash); | ||
538 | break; | ||
539 | case GNUNET_MESSENGER_KIND_PEER: | ||
540 | send_message_peer (room, handle, message, &hash); | ||
541 | break; | ||
542 | case GNUNET_MESSENGER_KIND_ID: | ||
543 | send_message_id (room, handle, message, &hash); | ||
544 | break; | ||
545 | case GNUNET_MESSENGER_KIND_REQUEST: | ||
546 | send_message_request (room, handle, message, &hash); | ||
547 | break; | ||
548 | default: | ||
549 | break; | ||
550 | } | ||
551 | |||
552 | callback_room_handle_message (room, handle, message, &hash); | ||
553 | return GNUNET_YES; | ||
554 | } | ||
555 | |||
556 | void | ||
557 | forward_room_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
558 | struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
559 | struct GNUNET_MESSENGER_Message *message, | ||
560 | const struct GNUNET_HashCode *hash) | ||
561 | { | ||
562 | GNUNET_assert((room) && (tunnel)); | ||
563 | |||
564 | if (!message) | ||
565 | return; | ||
566 | |||
567 | struct GNUNET_MESSENGER_ClosureSendRoom closure; | ||
568 | struct GNUNET_HashCode message_hash; | ||
569 | |||
570 | GNUNET_memcpy(&message_hash, hash, sizeof(struct GNUNET_HashCode)); | ||
571 | |||
572 | closure.room = room; | ||
573 | closure.handle = NULL; | ||
574 | closure.exclude = tunnel; | ||
575 | closure.message = message; | ||
576 | closure.hash = &message_hash; | ||
577 | closure.packed = GNUNET_YES; | ||
578 | |||
579 | GNUNET_CONTAINER_multipeermap_iterate (room->tunnels, iterate_send_room_message, &closure); | ||
580 | } | ||
581 | |||
582 | void | ||
583 | check_room_peer_status (struct GNUNET_MESSENGER_SrvRoom *room, | ||
584 | struct GNUNET_MESSENGER_SrvTunnel *tunnel) | ||
585 | { | ||
586 | if (!room->peer_message) | ||
587 | return; | ||
588 | |||
589 | struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room); | ||
590 | |||
591 | const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, room->peer_message); | ||
592 | |||
593 | if (!message) | ||
594 | { | ||
595 | GNUNET_free(room->peer_message); | ||
596 | room->peer_message = NULL; | ||
597 | return; | ||
598 | } | ||
599 | |||
600 | struct GNUNET_MESSENGER_MemberStore *member_store = get_room_member_store(room); | ||
601 | struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message); | ||
602 | |||
603 | if (!member) | ||
604 | goto resend_peer_message; | ||
605 | |||
606 | struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, room->peer_message); | ||
607 | |||
608 | if (GNUNET_YES == is_member_session_closed(session)) | ||
609 | goto resend_peer_message; | ||
610 | |||
611 | if (tunnel) | ||
612 | forward_tunnel_message(tunnel, message, room->peer_message); | ||
613 | |||
614 | return; | ||
615 | |||
616 | resend_peer_message: | ||
617 | if (room->host) | ||
618 | send_room_message (room, room->host, create_message_peer (room->service)); | ||
619 | } | ||
620 | |||
621 | void | ||
622 | merge_room_last_messages (struct GNUNET_MESSENGER_SrvRoom *room, | ||
623 | struct GNUNET_MESSENGER_SrvHandle *handle) | ||
624 | { | ||
625 | GNUNET_assert(room); | ||
626 | |||
627 | if (!handle) | ||
628 | return; | ||
629 | |||
630 | const struct GNUNET_HashCode *hash; | ||
631 | |||
632 | merge_next: | ||
633 | hash = get_message_state_merge_hash (&(room->state)); | ||
634 | |||
635 | if (!hash) | ||
636 | return; | ||
637 | |||
638 | send_room_message (room, handle, create_message_merge (hash)); | ||
639 | goto merge_next; | ||
640 | } | ||
641 | |||
642 | void | ||
643 | callback_room_deletion (struct GNUNET_MESSENGER_SrvRoom *room, | ||
644 | const struct GNUNET_HashCode *hash) | ||
645 | { | ||
646 | if (GNUNET_OK != delete_store_message (get_room_message_store(room), hash)) | ||
647 | { | ||
648 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Deletion of message failed! (%s)\n", GNUNET_h2s(hash)); | ||
649 | return; | ||
650 | } | ||
651 | } | ||
652 | |||
653 | void | ||
654 | callback_room_merge (struct GNUNET_MESSENGER_SrvRoom *room, | ||
655 | const struct GNUNET_HashCode *hash) | ||
656 | { | ||
657 | if (!room->host) | ||
658 | return; | ||
659 | |||
660 | send_room_message (room, room->host, create_message_merge (hash)); | ||
661 | } | ||
662 | |||
663 | int | ||
664 | delete_room_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
665 | struct GNUNET_MESSENGER_MemberSession *session, | ||
666 | const struct GNUNET_HashCode *hash, | ||
667 | const struct GNUNET_TIME_Relative delay) | ||
668 | { | ||
669 | GNUNET_assert((room) && (session) && (hash)); | ||
670 | |||
671 | const struct GNUNET_TIME_Relative forever = GNUNET_TIME_relative_get_forever_ (); | ||
672 | |||
673 | if (0 == GNUNET_memcmp(&forever, &delay)) | ||
674 | { | ||
675 | GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Deletion is delayed forever: operation is impossible!\n"); | ||
676 | return GNUNET_SYSERR; | ||
677 | } | ||
678 | |||
679 | struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room); | ||
680 | |||
681 | const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, hash); | ||
682 | |||
683 | if (!message) | ||
684 | return GNUNET_YES; | ||
685 | |||
686 | if (GNUNET_YES != check_member_session_history(session, hash, GNUNET_YES)) | ||
687 | { | ||
688 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Unpermitted request for deletion by member (%s) of message (%s)!\n", | ||
689 | GNUNET_sh2s(get_member_session_id(session)), GNUNET_h2s(hash)); | ||
690 | |||
691 | return GNUNET_NO; | ||
692 | } | ||
693 | |||
694 | struct GNUNET_MESSENGER_OperationStore *operation_store = get_room_operation_store(room); | ||
695 | |||
696 | if (GNUNET_OK != use_store_operation(operation_store, hash, GNUNET_MESSENGER_OP_DELETE, delay)) | ||
697 | { | ||
698 | GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Deletion has failed: operation denied!\n"); | ||
699 | return GNUNET_SYSERR; | ||
700 | } | ||
701 | |||
702 | return GNUNET_YES; | ||
703 | } | ||
704 | |||
705 | struct GNUNET_CADET_Handle* | ||
706 | get_room_cadet (struct GNUNET_MESSENGER_SrvRoom *room) | ||
707 | { | ||
708 | GNUNET_assert(room); | ||
709 | |||
710 | return room->service->cadet; | ||
711 | } | ||
712 | |||
713 | const struct GNUNET_HashCode* | ||
714 | get_room_key (const struct GNUNET_MESSENGER_SrvRoom *room) | ||
715 | { | ||
716 | GNUNET_assert(room); | ||
717 | |||
718 | return &(room->key); | ||
719 | } | ||
720 | |||
721 | const struct GNUNET_MESSENGER_SrvTunnel* | ||
722 | get_room_tunnel (const struct GNUNET_MESSENGER_SrvRoom *room, | ||
723 | const struct GNUNET_PeerIdentity *peer) | ||
724 | { | ||
725 | GNUNET_assert((room) && (peer)); | ||
726 | |||
727 | return GNUNET_CONTAINER_multipeermap_get (room->tunnels, peer); | ||
728 | } | ||
729 | |||
730 | static int | ||
731 | request_room_message_step (struct GNUNET_MESSENGER_SrvRoom *room, | ||
732 | const struct GNUNET_HashCode *hash, | ||
733 | const struct GNUNET_MESSENGER_MemberSession *session, | ||
734 | GNUNET_MESSENGER_MessageRequestCallback callback, | ||
735 | void* cls) | ||
736 | { | ||
737 | struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room); | ||
738 | |||
739 | const struct GNUNET_MESSENGER_MessageLink *link = get_store_message_link( | ||
740 | message_store, hash, GNUNET_YES | ||
741 | ); | ||
742 | |||
743 | if (!link) | ||
744 | goto forward; | ||
745 | |||
746 | int result = request_room_message_step(room, &(link->first), session, callback, cls); | ||
747 | |||
748 | if ((GNUNET_YES == link->multiple) && | ||
749 | (GNUNET_YES == request_room_message_step(room, &(link->second), session, callback, cls))) | ||
750 | return GNUNET_YES; | ||
751 | else | ||
752 | return result; | ||
753 | |||
754 | forward: | ||
755 | if (GNUNET_YES != check_member_session_history(session, hash, GNUNET_NO)) | ||
756 | return GNUNET_YES; | ||
757 | |||
758 | const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, hash); | ||
759 | |||
760 | if (!message) | ||
761 | return GNUNET_NO; | ||
762 | |||
763 | if (callback) | ||
764 | callback (cls, room, message, hash); | ||
765 | |||
766 | return GNUNET_YES; | ||
767 | } | ||
768 | |||
769 | int | ||
770 | request_room_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
771 | const struct GNUNET_HashCode *hash, | ||
772 | const struct GNUNET_MESSENGER_MemberSession *session, | ||
773 | GNUNET_MESSENGER_MessageRequestCallback callback, | ||
774 | void* cls) | ||
775 | { | ||
776 | GNUNET_assert((room) && (hash)); | ||
777 | |||
778 | int result = request_room_message_step (room, hash, session, callback, cls); | ||
779 | |||
780 | if ((GNUNET_NO == result) && (callback)) | ||
781 | callback (cls, room, NULL, hash); | ||
782 | |||
783 | return result; | ||
784 | } | ||
785 | |||
786 | void | ||
787 | callback_room_disconnect (struct GNUNET_MESSENGER_SrvRoom *room, | ||
788 | void *cls) | ||
789 | { | ||
790 | struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls; | ||
791 | |||
792 | if (!room->host) | ||
793 | return; | ||
794 | |||
795 | struct GNUNET_PeerIdentity identity; | ||
796 | get_tunnel_peer_identity(tunnel, &identity); | ||
797 | |||
798 | if ((GNUNET_YES != GNUNET_CONTAINER_multipeermap_remove (room->tunnels, &identity, tunnel)) || | ||
799 | (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains(room->tunnels, &identity))) | ||
800 | return; | ||
801 | |||
802 | if (GNUNET_YES == contains_list_tunnels (&(room->basement), &identity)) | ||
803 | send_room_message (room, room->host, create_message_miss (&identity)); | ||
804 | } | ||
805 | |||
806 | int | ||
807 | callback_verify_room_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
808 | void *cls, | ||
809 | struct GNUNET_MESSENGER_Message *message, | ||
810 | struct GNUNET_HashCode *hash) | ||
811 | { | ||
812 | if (GNUNET_MESSENGER_KIND_UNKNOWN == message->header.kind) | ||
813 | { | ||
814 | GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Message error: Kind is unknown! (%d)\n", message->header.kind); | ||
815 | return GNUNET_SYSERR; | ||
816 | } | ||
817 | |||
818 | struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room); | ||
819 | |||
820 | const struct GNUNET_MESSENGER_Message *previous = get_store_message(message_store, &(message->header.previous)); | ||
821 | |||
822 | if (!previous) | ||
823 | goto skip_time_comparison; | ||
824 | |||
825 | struct GNUNET_TIME_Absolute timestamp = GNUNET_TIME_absolute_ntoh(message->header.timestamp); | ||
826 | struct GNUNET_TIME_Absolute last = GNUNET_TIME_absolute_ntoh(previous->header.timestamp); | ||
827 | |||
828 | if (GNUNET_TIME_relative_get_zero_().rel_value_us != GNUNET_TIME_absolute_get_difference(timestamp, last).rel_value_us) | ||
829 | { | ||
830 | GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Message error: Timestamp does not check out!\n"); | ||
831 | return GNUNET_SYSERR; | ||
832 | } | ||
833 | |||
834 | skip_time_comparison: | ||
835 | GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Receiving message of kind: %s!\n", | ||
836 | GNUNET_MESSENGER_name_of_kind(message->header.kind)); | ||
837 | |||
838 | return GNUNET_OK; | ||
839 | } | ||
840 | |||
841 | static void | ||
842 | idle_request_room_messages (void *cls) | ||
843 | { | ||
844 | struct GNUNET_MESSENGER_SrvRoom *room = cls; | ||
845 | |||
846 | room->idle = NULL; | ||
847 | |||
848 | struct GNUNET_MESSENGER_OperationStore *operation_store = get_room_operation_store(room); | ||
849 | const struct GNUNET_HashCode *hash = get_message_state_merge_hash(&(room->state)); | ||
850 | |||
851 | if ((hash) && | ||
852 | (GNUNET_MESSENGER_OP_UNKNOWN == get_store_operation_type(operation_store, hash))) | ||
853 | use_store_operation( | ||
854 | operation_store, | ||
855 | hash, | ||
856 | GNUNET_MESSENGER_OP_MERGE, | ||
857 | GNUNET_MESSENGER_MERGE_DELAY | ||
858 | ); | ||
859 | |||
860 | room->idle = GNUNET_SCHEDULER_add_delayed_with_priority ( | ||
861 | GNUNET_MESSENGER_IDLE_DELAY, | ||
862 | GNUNET_SCHEDULER_PRIORITY_IDLE, | ||
863 | idle_request_room_messages, | ||
864 | cls | ||
865 | ); | ||
866 | } | ||
867 | |||
868 | void | ||
869 | solve_room_member_collisions (struct GNUNET_MESSENGER_SrvRoom *room, | ||
870 | const struct GNUNET_IDENTITY_PublicKey *public_key, | ||
871 | const struct GNUNET_ShortHashCode *member_id, | ||
872 | struct GNUNET_TIME_Absolute timestamp) | ||
873 | { | ||
874 | GNUNET_assert ((room) && (public_key) && (member_id)); | ||
875 | |||
876 | struct GNUNET_MESSENGER_MemberStore *member_store = get_room_member_store(room); | ||
877 | struct GNUNET_MESSENGER_Member *member = get_store_member(member_store, member_id); | ||
878 | |||
879 | if ((!member) || (1 >= GNUNET_CONTAINER_multihashmap_size(member->sessions))) | ||
880 | return; | ||
881 | |||
882 | struct GNUNET_MESSENGER_ListHandles *handles = &(room->service->handles); | ||
883 | struct GNUNET_MESSENGER_ListHandle* element; | ||
884 | |||
885 | for (element = handles->head; element; element = element->next) | ||
886 | { | ||
887 | if (0 != GNUNET_memcmp(member_id, get_handle_member_id(element->handle, get_room_key(room)))) | ||
888 | continue; | ||
889 | |||
890 | if (0 == GNUNET_memcmp(public_key, &(get_handle_ego(element->handle)->pub))) | ||
891 | continue; | ||
892 | |||
893 | struct GNUNET_MESSENGER_MemberSession *session = get_member_session(member, &(get_handle_ego(element->handle)->pub)); | ||
894 | |||
895 | if (!session) | ||
896 | continue; | ||
897 | |||
898 | struct GNUNET_TIME_Absolute start = get_member_session_start(session); | ||
899 | |||
900 | if (GNUNET_TIME_relative_get_zero_().rel_value_us != GNUNET_TIME_absolute_get_difference(start, timestamp).rel_value_us) | ||
901 | continue; | ||
902 | |||
903 | struct GNUNET_ShortHashCode random_id; | ||
904 | generate_free_member_id (&random_id, member_store->members); | ||
905 | |||
906 | send_room_message(room, element->handle, create_message_id(&random_id)); | ||
907 | } | ||
908 | } | ||
909 | |||
910 | void | ||
911 | rebuild_room_basement_structure (struct GNUNET_MESSENGER_SrvRoom *room) | ||
912 | { | ||
913 | GNUNET_assert(room); | ||
914 | |||
915 | struct GNUNET_PeerIdentity peer; | ||
916 | size_t src; | ||
917 | |||
918 | if ((GNUNET_OK != get_service_peer_identity (room->service, &peer)) || | ||
919 | (!find_list_tunnels (&(room->basement), &peer, &src))) | ||
920 | return; | ||
921 | |||
922 | size_t count = count_of_tunnels (&(room->basement)); | ||
923 | |||
924 | struct GNUNET_MESSENGER_ListTunnel *element = room->basement.head; | ||
925 | struct GNUNET_MESSENGER_SrvTunnel *tunnel; | ||
926 | |||
927 | size_t dst = 0; | ||
928 | |||
929 | while (element) | ||
930 | { | ||
931 | GNUNET_PEER_resolve (element->peer, &peer); | ||
932 | |||
933 | tunnel = GNUNET_CONTAINER_multipeermap_get (room->tunnels, &peer); | ||
934 | |||
935 | if (!tunnel) | ||
936 | { | ||
937 | element = remove_from_list_tunnels (&(room->basement), element); | ||
938 | continue; | ||
939 | } | ||
940 | |||
941 | if (GNUNET_YES == required_connection_between (count, src, dst)) | ||
942 | { | ||
943 | if (GNUNET_SYSERR == connect_tunnel (tunnel)) | ||
944 | { | ||
945 | element = remove_from_list_tunnels (&(room->basement), element); | ||
946 | continue; | ||
947 | } | ||
948 | } | ||
949 | else | ||
950 | disconnect_tunnel (tunnel); | ||
951 | |||
952 | element = element->next; | ||
953 | dst++; | ||
954 | } | ||
955 | } | ||
956 | |||
957 | static void | ||
958 | handle_room_messages (struct GNUNET_MESSENGER_SrvRoom *room) | ||
959 | { | ||
960 | struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room); | ||
961 | struct GNUNET_MESSENGER_MemberStore *member_store = get_room_member_store(room); | ||
962 | |||
963 | while (room->handling.head) | ||
964 | { | ||
965 | struct GNUNET_MESSENGER_ListMessage *element = room->handling.head; | ||
966 | |||
967 | const struct GNUNET_MESSENGER_Message *message = get_store_message (message_store, &(element->hash)); | ||
968 | |||
969 | if (!message) | ||
970 | goto finish_handling; | ||
971 | |||
972 | struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message); | ||
973 | |||
974 | if (!member) | ||
975 | goto finish_handling; | ||
976 | |||
977 | struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, &(element->hash)); | ||
978 | |||
979 | if (session) | ||
980 | handle_service_message (room->service, room, session, message, &(element->hash)); | ||
981 | |||
982 | finish_handling: | ||
983 | GNUNET_CONTAINER_DLL_remove(room->handling.head, room->handling.tail, element); | ||
984 | GNUNET_free(element); | ||
985 | } | ||
986 | } | ||
987 | |||
988 | int | ||
989 | update_room_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
990 | struct GNUNET_MESSENGER_Message *message, | ||
991 | const struct GNUNET_HashCode *hash) | ||
992 | { | ||
993 | GNUNET_assert((room) && (message) && (hash)); | ||
994 | |||
995 | struct GNUNET_MESSENGER_OperationStore *operation_store = get_room_operation_store(room); | ||
996 | |||
997 | const int requested = (GNUNET_MESSENGER_OP_REQUEST == get_store_operation_type(operation_store, hash)? | ||
998 | GNUNET_YES : GNUNET_NO | ||
999 | ); | ||
1000 | |||
1001 | if (GNUNET_YES == requested) | ||
1002 | cancel_store_operation(operation_store, hash); | ||
1003 | |||
1004 | struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room); | ||
1005 | |||
1006 | const struct GNUNET_MESSENGER_Message *old_message = get_store_message (message_store, hash); | ||
1007 | |||
1008 | GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Handle a message in room (%s).\n", GNUNET_h2s (get_room_key(room))); | ||
1009 | |||
1010 | if ((old_message) || (GNUNET_OK != put_store_message (message_store, hash, message))) | ||
1011 | { | ||
1012 | if (old_message != message) | ||
1013 | destroy_message(message); | ||
1014 | |||
1015 | GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Duplicate message got dropped!\n"); | ||
1016 | return GNUNET_NO; | ||
1017 | } | ||
1018 | |||
1019 | update_message_state(&(room->state), requested, message, hash); | ||
1020 | |||
1021 | if ((GNUNET_YES == requested) || | ||
1022 | (GNUNET_MESSENGER_KIND_INFO == message->header.kind) || | ||
1023 | (GNUNET_MESSENGER_KIND_REQUEST == message->header.kind)) | ||
1024 | return GNUNET_YES; | ||
1025 | |||
1026 | if ((GNUNET_MESSENGER_KIND_MERGE == message->header.kind) && | ||
1027 | (GNUNET_MESSENGER_OP_MERGE == get_store_operation_type(operation_store, &(message->body.merge.previous)))) | ||
1028 | cancel_store_operation(operation_store, &(message->body.merge.previous)); | ||
1029 | |||
1030 | if (GNUNET_MESSENGER_OP_MERGE == get_store_operation_type(operation_store, &(message->header.previous))) | ||
1031 | cancel_store_operation(operation_store, &(message->header.previous)); | ||
1032 | |||
1033 | return GNUNET_YES; | ||
1034 | } | ||
1035 | |||
1036 | struct GNUNET_MESSENGER_MemberSessionCompletion | ||
1037 | { | ||
1038 | struct GNUNET_MESSENGER_MemberSessionCompletion *prev; | ||
1039 | struct GNUNET_MESSENGER_MemberSessionCompletion *next; | ||
1040 | |||
1041 | struct GNUNET_MESSENGER_MemberSession *session; | ||
1042 | }; | ||
1043 | |||
1044 | struct GNUNET_MESSENGER_MemberUpdate | ||
1045 | { | ||
1046 | const struct GNUNET_MESSENGER_Message *message; | ||
1047 | const struct GNUNET_HashCode *hash; | ||
1048 | |||
1049 | struct GNUNET_MESSENGER_MemberSessionCompletion *head; | ||
1050 | struct GNUNET_MESSENGER_MemberSessionCompletion *tail; | ||
1051 | }; | ||
1052 | |||
1053 | static int | ||
1054 | iterate_update_member_sessions (void *cls, | ||
1055 | const struct GNUNET_IDENTITY_PublicKey *public_key, | ||
1056 | struct GNUNET_MESSENGER_MemberSession *session) | ||
1057 | { | ||
1058 | struct GNUNET_MESSENGER_MemberUpdate *update = cls; | ||
1059 | |||
1060 | update_member_session_history(session, update->message, update->hash); | ||
1061 | |||
1062 | if (GNUNET_YES == is_member_session_completed(session)) | ||
1063 | { | ||
1064 | struct GNUNET_MESSENGER_MemberSessionCompletion *element = GNUNET_new( | ||
1065 | struct GNUNET_MESSENGER_MemberSessionCompletion | ||
1066 | ); | ||
1067 | |||
1068 | element->session = session; | ||
1069 | |||
1070 | GNUNET_CONTAINER_DLL_insert_tail(update->head, update->tail, element); | ||
1071 | } | ||
1072 | |||
1073 | return GNUNET_YES; | ||
1074 | } | ||
1075 | |||
1076 | static void | ||
1077 | remove_room_member_session (struct GNUNET_MESSENGER_SrvRoom *room, | ||
1078 | struct GNUNET_MESSENGER_MemberSession *session); | ||
1079 | |||
1080 | void | ||
1081 | callback_room_handle_message (struct GNUNET_MESSENGER_SrvRoom *room, | ||
1082 | struct GNUNET_MESSENGER_SrvHandle *handle, | ||
1083 | const struct GNUNET_MESSENGER_Message *message, | ||
1084 | const struct GNUNET_HashCode *hash) | ||
1085 | { | ||
1086 | struct GNUNET_MESSENGER_MemberStore *member_store = get_room_member_store(room); | ||
1087 | struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message); | ||
1088 | |||
1089 | GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Callback for message (%s)\n", GNUNET_h2s (hash)); | ||
1090 | |||
1091 | if (!member) | ||
1092 | { | ||
1093 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Message handling dropped: Member is missing!\n"); | ||
1094 | return; | ||
1095 | } | ||
1096 | |||
1097 | struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, hash); | ||
1098 | |||
1099 | if (!session) | ||
1100 | { | ||
1101 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Message handling dropped: Session is missing!\n"); | ||
1102 | return; | ||
1103 | } | ||
1104 | |||
1105 | struct GNUNET_MESSENGER_MemberUpdate update; | ||
1106 | update.message = message; | ||
1107 | update.hash = hash; | ||
1108 | |||
1109 | update.head = NULL; | ||
1110 | update.tail = NULL; | ||
1111 | |||
1112 | iterate_store_members(member_store, iterate_update_member_sessions, &update); | ||
1113 | |||
1114 | while (update.head) | ||
1115 | { | ||
1116 | struct GNUNET_MESSENGER_MemberSessionCompletion *element = update.head; | ||
1117 | |||
1118 | remove_room_member_session (room, element->session); | ||
1119 | |||
1120 | GNUNET_CONTAINER_DLL_remove(update.head, update.tail, element); | ||
1121 | GNUNET_free (element); | ||
1122 | } | ||
1123 | |||
1124 | const int start_handle = room->handling.head ? GNUNET_NO : GNUNET_YES; | ||
1125 | |||
1126 | add_to_list_messages (&(room->handling), hash); | ||
1127 | |||
1128 | switch (message->header.kind) | ||
1129 | { | ||
1130 | case GNUNET_MESSENGER_KIND_JOIN: | ||
1131 | handle_message_join (room, session, message, hash); | ||
1132 | break; | ||
1133 | case GNUNET_MESSENGER_KIND_LEAVE: | ||
1134 | handle_message_leave (room, session, message, hash); | ||
1135 | break; | ||
1136 | case GNUNET_MESSENGER_KIND_NAME: | ||
1137 | handle_message_name (room, session, message, hash); | ||
1138 | break; | ||
1139 | case GNUNET_MESSENGER_KIND_KEY: | ||
1140 | handle_message_key (room, session, message, hash); | ||
1141 | break; | ||
1142 | case GNUNET_MESSENGER_KIND_PEER: | ||
1143 | handle_message_peer (room, session, message, hash); | ||
1144 | break; | ||
1145 | case GNUNET_MESSENGER_KIND_ID: | ||
1146 | handle_message_id (room, session, message, hash); | ||
1147 | break; | ||
1148 | case GNUNET_MESSENGER_KIND_MISS: | ||
1149 | handle_message_miss (room, session, message, hash); | ||
1150 | break; | ||
1151 | case GNUNET_MESSENGER_KIND_DELETE: | ||
1152 | handle_message_delete (room, session, message, hash); | ||
1153 | break; | ||
1154 | default: | ||
1155 | break; | ||
1156 | } | ||
1157 | |||
1158 | if (GNUNET_YES == start_handle) | ||
1159 | handle_room_messages (room); | ||
1160 | } | ||
1161 | |||
1162 | static void | ||
1163 | get_room_data_subdir (struct GNUNET_MESSENGER_SrvRoom *room, | ||
1164 | char **dir) | ||
1165 | { | ||
1166 | GNUNET_assert((room) && (dir)); | ||
1167 | |||
1168 | GNUNET_asprintf (dir, "%s%s%c%s%c", room->service->dir, "rooms", DIR_SEPARATOR, GNUNET_h2s (get_room_key(room)), DIR_SEPARATOR); | ||
1169 | } | ||
1170 | |||
1171 | void | ||
1172 | load_room (struct GNUNET_MESSENGER_SrvRoom *room) | ||
1173 | { | ||
1174 | GNUNET_assert(room); | ||
1175 | |||
1176 | char *room_dir; | ||
1177 | get_room_data_subdir (room, &room_dir); | ||
1178 | |||
1179 | if (GNUNET_YES == GNUNET_DISK_directory_test (room_dir, GNUNET_YES)) | ||
1180 | { | ||
1181 | load_member_store (get_room_member_store(room), room_dir); | ||
1182 | load_message_store (get_room_message_store(room), room_dir); | ||
1183 | load_operation_store(get_room_operation_store(room), room_dir); | ||
1184 | |||
1185 | char *basement_file; | ||
1186 | GNUNET_asprintf (&basement_file, "%s%s", room_dir, "basement.list"); | ||
1187 | |||
1188 | load_list_tunnels(&(room->basement), basement_file); | ||
1189 | GNUNET_free(basement_file); | ||
1190 | |||
1191 | load_message_state(&(room->state), room_dir); | ||
1192 | } | ||
1193 | |||
1194 | GNUNET_free(room_dir); | ||
1195 | } | ||
1196 | |||
1197 | void | ||
1198 | save_room (struct GNUNET_MESSENGER_SrvRoom *room) | ||
1199 | { | ||
1200 | GNUNET_assert(room); | ||
1201 | |||
1202 | char *room_dir; | ||
1203 | get_room_data_subdir (room, &room_dir); | ||
1204 | |||
1205 | if ((GNUNET_YES == GNUNET_DISK_directory_test (room_dir, GNUNET_NO)) || | ||
1206 | (GNUNET_OK == GNUNET_DISK_directory_create (room_dir))) | ||
1207 | { | ||
1208 | save_member_store(get_room_member_store(room), room_dir); | ||
1209 | save_message_store (get_room_message_store(room), room_dir); | ||
1210 | save_operation_store(get_room_operation_store(room), room_dir); | ||
1211 | |||
1212 | char *basement_file; | ||
1213 | GNUNET_asprintf (&basement_file, "%s%s", room_dir, "basement.list"); | ||
1214 | |||
1215 | save_list_tunnels(&(room->basement), basement_file); | ||
1216 | GNUNET_free(basement_file); | ||
1217 | |||
1218 | save_message_state(&(room->state), room_dir); | ||
1219 | } | ||
1220 | |||
1221 | GNUNET_free(room_dir); | ||
1222 | } | ||
1223 | |||
1224 | static void | ||
1225 | remove_room_member_session (struct GNUNET_MESSENGER_SrvRoom *room, | ||
1226 | struct GNUNET_MESSENGER_MemberSession *session) | ||
1227 | { | ||
1228 | GNUNET_assert ((room) && (session)); | ||
1229 | |||
1230 | remove_member_session (session->member, session); | ||
1231 | |||
1232 | const struct GNUNET_IDENTITY_PublicKey *public_key = get_member_session_public_key(session); | ||
1233 | |||
1234 | struct GNUNET_HashCode hash; | ||
1235 | GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash); | ||
1236 | |||
1237 | char *room_dir; | ||
1238 | get_room_data_subdir (room, &room_dir); | ||
1239 | |||
1240 | char* session_dir; | ||
1241 | GNUNET_asprintf ( | ||
1242 | &session_dir, "%s%s%c%s%c%s%c%s%c", room_dir, | ||
1243 | "members", DIR_SEPARATOR, | ||
1244 | GNUNET_sh2s(get_member_session_id(session)), DIR_SEPARATOR, | ||
1245 | "sessions", DIR_SEPARATOR, | ||
1246 | GNUNET_h2s(&hash), DIR_SEPARATOR | ||
1247 | ); | ||
1248 | |||
1249 | GNUNET_free (room_dir); | ||
1250 | |||
1251 | GNUNET_DISK_directory_remove(session_dir); | ||
1252 | GNUNET_free (session_dir); | ||
1253 | |||
1254 | destroy_member_session(session); | ||
1255 | } | ||