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Commit | Line | Data |
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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * channel.c: Controls channels. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
83294285 | 24 | * $Id: channel.c 3580 2007-11-07 23:45:14Z jilles $ |
212380e3 AC |
25 | */ |
26 | ||
27 | #include "stdinc.h" | |
212380e3 | 28 | #include "channel.h" |
392ae75c | 29 | #include "chmode.h" |
212380e3 AC |
30 | #include "client.h" |
31 | #include "common.h" | |
32 | #include "hash.h" | |
33 | #include "hook.h" | |
4562c604 | 34 | #include "match.h" |
212380e3 AC |
35 | #include "ircd.h" |
36 | #include "numeric.h" | |
37 | #include "s_serv.h" /* captab */ | |
38 | #include "s_user.h" | |
39 | #include "send.h" | |
40 | #include "whowas.h" | |
41 | #include "s_conf.h" /* ConfigFileEntry, ConfigChannel */ | |
42 | #include "s_newconf.h" | |
4016731b | 43 | #include "logger.h" |
212380e3 | 44 | |
18e4d421 | 45 | struct config_channel_entry ConfigChannel; |
c3d10343 | 46 | rb_dlink_list global_channel_list; |
b617afdc VY |
47 | static rb_bh *channel_heap; |
48 | static rb_bh *ban_heap; | |
49 | static rb_bh *topic_heap; | |
50 | static rb_bh *member_heap; | |
51 | ||
212380e3 AC |
52 | static int channel_capabs[] = { CAP_EX, CAP_IE, |
53 | CAP_SERVICE, | |
54 | CAP_TS6 | |
55 | }; | |
56 | ||
57 | #define NCHCAPS (sizeof(channel_capabs)/sizeof(int)) | |
58 | #define NCHCAP_COMBOS (1 << NCHCAPS) | |
59 | ||
60 | static struct ChCapCombo chcap_combos[NCHCAP_COMBOS]; | |
61 | ||
62 | static void free_topic(struct Channel *chptr); | |
63 | ||
64 | static int h_can_join; | |
65 | ||
66 | /* init_channels() | |
67 | * | |
68 | * input - | |
69 | * output - | |
70 | * side effects - initialises the various blockheaps | |
71 | */ | |
72 | void | |
73 | init_channels(void) | |
74 | { | |
c608a061 AC |
75 | channel_heap = rb_bh_create(sizeof(struct Channel), CHANNEL_HEAP_SIZE, "channel_heap"); |
76 | ban_heap = rb_bh_create(sizeof(struct Ban), BAN_HEAP_SIZE, "ban_heap"); | |
77 | topic_heap = rb_bh_create(TOPICLEN + 1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE, "topic_heap"); | |
78 | member_heap = rb_bh_create(sizeof(struct membership), MEMBER_HEAP_SIZE, "member_heap"); | |
212380e3 AC |
79 | |
80 | h_can_join = register_hook("can_join"); | |
81 | } | |
82 | ||
83 | /* | |
84 | * allocate_channel - Allocates a channel | |
85 | */ | |
86 | struct Channel * | |
87 | allocate_channel(const char *chname) | |
88 | { | |
89 | struct Channel *chptr; | |
398b6a73 | 90 | chptr = rb_bh_alloc(channel_heap); |
47a03750 | 91 | chptr->chname = rb_strdup(chname); |
212380e3 AC |
92 | return (chptr); |
93 | } | |
94 | ||
95 | void | |
96 | free_channel(struct Channel *chptr) | |
97 | { | |
637c4932 | 98 | rb_free(chptr->chname); |
78e6b731 | 99 | rb_free(chptr->mode_lock); |
398b6a73 | 100 | rb_bh_free(channel_heap, chptr); |
212380e3 AC |
101 | } |
102 | ||
103 | struct Ban * | |
104 | allocate_ban(const char *banstr, const char *who) | |
105 | { | |
106 | struct Ban *bptr; | |
398b6a73 | 107 | bptr = rb_bh_alloc(ban_heap); |
47a03750 VY |
108 | bptr->banstr = rb_strdup(banstr); |
109 | bptr->who = rb_strdup(who); | |
212380e3 AC |
110 | |
111 | return (bptr); | |
112 | } | |
113 | ||
114 | void | |
115 | free_ban(struct Ban *bptr) | |
116 | { | |
637c4932 VY |
117 | rb_free(bptr->banstr); |
118 | rb_free(bptr->who); | |
398b6a73 | 119 | rb_bh_free(ban_heap, bptr); |
212380e3 AC |
120 | } |
121 | ||
122 | ||
123 | /* find_channel_membership() | |
124 | * | |
125 | * input - channel to find them in, client to find | |
126 | * output - membership of client in channel, else NULL | |
127 | * side effects - | |
128 | */ | |
129 | struct membership * | |
130 | find_channel_membership(struct Channel *chptr, struct Client *client_p) | |
131 | { | |
132 | struct membership *msptr; | |
330fc5c1 | 133 | rb_dlink_node *ptr; |
212380e3 AC |
134 | |
135 | if(!IsClient(client_p)) | |
136 | return NULL; | |
137 | ||
138 | /* Pick the most efficient list to use to be nice to things like | |
139 | * CHANSERV which could be in a large number of channels | |
140 | */ | |
330fc5c1 | 141 | if(rb_dlink_list_length(&chptr->members) < rb_dlink_list_length(&client_p->user->channel)) |
212380e3 | 142 | { |
5cefa1d6 | 143 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
144 | { |
145 | msptr = ptr->data; | |
146 | ||
147 | if(msptr->client_p == client_p) | |
148 | return msptr; | |
149 | } | |
150 | } | |
151 | else | |
152 | { | |
5cefa1d6 | 153 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
154 | { |
155 | msptr = ptr->data; | |
156 | ||
157 | if(msptr->chptr == chptr) | |
158 | return msptr; | |
159 | } | |
160 | } | |
161 | ||
162 | return NULL; | |
163 | } | |
164 | ||
165 | /* find_channel_status() | |
166 | * | |
167 | * input - membership to get status for, whether we can combine flags | |
168 | * output - flags of user on channel | |
169 | * side effects - | |
170 | */ | |
171 | const char * | |
172 | find_channel_status(struct membership *msptr, int combine) | |
173 | { | |
174 | static char buffer[3]; | |
175 | char *p; | |
176 | ||
177 | p = buffer; | |
178 | ||
179 | if(is_chanop(msptr)) | |
180 | { | |
181 | if(!combine) | |
182 | return "@"; | |
183 | *p++ = '@'; | |
184 | } | |
185 | ||
186 | if(is_voiced(msptr)) | |
187 | *p++ = '+'; | |
188 | ||
189 | *p = '\0'; | |
190 | return buffer; | |
191 | } | |
192 | ||
193 | /* add_user_to_channel() | |
194 | * | |
195 | * input - channel to add client to, client to add, channel flags | |
196 | * output - | |
197 | * side effects - user is added to channel | |
198 | */ | |
199 | void | |
200 | add_user_to_channel(struct Channel *chptr, struct Client *client_p, int flags) | |
201 | { | |
202 | struct membership *msptr; | |
203 | ||
204 | s_assert(client_p->user != NULL); | |
205 | if(client_p->user == NULL) | |
206 | return; | |
207 | ||
398b6a73 | 208 | msptr = rb_bh_alloc(member_heap); |
212380e3 AC |
209 | |
210 | msptr->chptr = chptr; | |
211 | msptr->client_p = client_p; | |
212 | msptr->flags = flags; | |
213 | ||
330fc5c1 AC |
214 | rb_dlinkAdd(msptr, &msptr->usernode, &client_p->user->channel); |
215 | rb_dlinkAdd(msptr, &msptr->channode, &chptr->members); | |
212380e3 AC |
216 | |
217 | if(MyClient(client_p)) | |
330fc5c1 | 218 | rb_dlinkAdd(msptr, &msptr->locchannode, &chptr->locmembers); |
212380e3 AC |
219 | } |
220 | ||
221 | /* remove_user_from_channel() | |
222 | * | |
223 | * input - membership pointer to remove from channel | |
224 | * output - | |
225 | * side effects - membership (thus user) is removed from channel | |
226 | */ | |
227 | void | |
228 | remove_user_from_channel(struct membership *msptr) | |
229 | { | |
230 | struct Client *client_p; | |
231 | struct Channel *chptr; | |
232 | s_assert(msptr != NULL); | |
233 | if(msptr == NULL) | |
234 | return; | |
235 | ||
236 | client_p = msptr->client_p; | |
237 | chptr = msptr->chptr; | |
238 | ||
330fc5c1 AC |
239 | rb_dlinkDelete(&msptr->usernode, &client_p->user->channel); |
240 | rb_dlinkDelete(&msptr->channode, &chptr->members); | |
212380e3 AC |
241 | |
242 | if(client_p->servptr == &me) | |
330fc5c1 | 243 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 244 | |
330fc5c1 | 245 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
246 | destroy_channel(chptr); |
247 | ||
398b6a73 | 248 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
249 | |
250 | return; | |
251 | } | |
252 | ||
253 | /* remove_user_from_channels() | |
254 | * | |
255 | * input - user to remove from all channels | |
256 | * output - | |
257 | * side effects - user is removed from all channels | |
258 | */ | |
259 | void | |
260 | remove_user_from_channels(struct Client *client_p) | |
261 | { | |
262 | struct Channel *chptr; | |
263 | struct membership *msptr; | |
330fc5c1 | 264 | rb_dlink_node *ptr; |
637c4932 | 265 | rb_dlink_node *next_ptr; |
212380e3 AC |
266 | |
267 | if(client_p == NULL) | |
268 | return; | |
269 | ||
637c4932 | 270 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->user->channel.head) |
212380e3 AC |
271 | { |
272 | msptr = ptr->data; | |
273 | chptr = msptr->chptr; | |
274 | ||
330fc5c1 | 275 | rb_dlinkDelete(&msptr->channode, &chptr->members); |
212380e3 AC |
276 | |
277 | if(client_p->servptr == &me) | |
330fc5c1 | 278 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 279 | |
330fc5c1 | 280 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
281 | destroy_channel(chptr); |
282 | ||
398b6a73 | 283 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
284 | } |
285 | ||
286 | client_p->user->channel.head = client_p->user->channel.tail = NULL; | |
287 | client_p->user->channel.length = 0; | |
288 | } | |
289 | ||
290 | /* invalidate_bancache_user() | |
291 | * | |
292 | * input - user to invalidate ban cache for | |
293 | * output - | |
294 | * side effects - ban cache is invalidated for all memberships of that user | |
295 | * to be used after a nick change | |
296 | */ | |
297 | void | |
298 | invalidate_bancache_user(struct Client *client_p) | |
299 | { | |
300 | struct membership *msptr; | |
330fc5c1 | 301 | rb_dlink_node *ptr; |
212380e3 AC |
302 | |
303 | if(client_p == NULL) | |
304 | return; | |
305 | ||
5cefa1d6 | 306 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
307 | { |
308 | msptr = ptr->data; | |
309 | msptr->bants = 0; | |
310 | msptr->flags &= ~CHFL_BANNED; | |
311 | } | |
312 | } | |
313 | ||
314 | /* check_channel_name() | |
315 | * | |
316 | * input - channel name | |
317 | * output - 1 if valid channel name, else 0 | |
318 | * side effects - | |
319 | */ | |
320 | int | |
321 | check_channel_name(const char *name) | |
322 | { | |
323 | s_assert(name != NULL); | |
324 | if(name == NULL) | |
325 | return 0; | |
326 | ||
327 | for (; *name; ++name) | |
328 | { | |
329 | if(!IsChanChar(*name)) | |
330 | return 0; | |
331 | } | |
332 | ||
333 | return 1; | |
334 | } | |
335 | ||
336 | /* free_channel_list() | |
337 | * | |
330fc5c1 | 338 | * input - rb_dlink list to free |
212380e3 AC |
339 | * output - |
340 | * side effects - list of b/e/I modes is cleared | |
341 | */ | |
342 | void | |
330fc5c1 | 343 | free_channel_list(rb_dlink_list * list) |
212380e3 | 344 | { |
330fc5c1 | 345 | rb_dlink_node *ptr; |
637c4932 | 346 | rb_dlink_node *next_ptr; |
212380e3 AC |
347 | struct Ban *actualBan; |
348 | ||
637c4932 | 349 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
350 | { |
351 | actualBan = ptr->data; | |
352 | free_ban(actualBan); | |
353 | } | |
354 | ||
355 | list->head = list->tail = NULL; | |
356 | list->length = 0; | |
357 | } | |
358 | ||
359 | /* destroy_channel() | |
360 | * | |
361 | * input - channel to destroy | |
362 | * output - | |
363 | * side effects - channel is obliterated | |
364 | */ | |
365 | void | |
366 | destroy_channel(struct Channel *chptr) | |
367 | { | |
637c4932 | 368 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 369 | |
637c4932 | 370 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) |
212380e3 AC |
371 | { |
372 | del_invite(chptr, ptr->data); | |
373 | } | |
374 | ||
375 | /* free all bans/exceptions/denies */ | |
376 | free_channel_list(&chptr->banlist); | |
377 | free_channel_list(&chptr->exceptlist); | |
378 | free_channel_list(&chptr->invexlist); | |
fea1ad52 | 379 | free_channel_list(&chptr->quietlist); |
212380e3 AC |
380 | |
381 | /* Free the topic */ | |
382 | free_topic(chptr); | |
383 | ||
330fc5c1 | 384 | rb_dlinkDelete(&chptr->node, &global_channel_list); |
212380e3 AC |
385 | del_from_channel_hash(chptr->chname, chptr); |
386 | free_channel(chptr); | |
387 | } | |
388 | ||
389 | /* channel_pub_or_secret() | |
390 | * | |
391 | * input - channel | |
392 | * output - "=" if public, "@" if secret, else "*" | |
393 | * side effects - | |
394 | */ | |
395 | static const char * | |
396 | channel_pub_or_secret(struct Channel *chptr) | |
397 | { | |
398 | if(PubChannel(chptr)) | |
399 | return ("="); | |
400 | else if(SecretChannel(chptr)) | |
401 | return ("@"); | |
402 | return ("*"); | |
403 | } | |
404 | ||
405 | /* channel_member_names() | |
406 | * | |
407 | * input - channel to list, client to list to, show endofnames | |
408 | * output - | |
409 | * side effects - client is given list of users on channel | |
410 | */ | |
411 | void | |
412 | channel_member_names(struct Channel *chptr, struct Client *client_p, int show_eon) | |
413 | { | |
414 | struct membership *msptr; | |
415 | struct Client *target_p; | |
330fc5c1 | 416 | rb_dlink_node *ptr; |
212380e3 AC |
417 | char lbuf[BUFSIZE]; |
418 | char *t; | |
419 | int mlen; | |
420 | int tlen; | |
421 | int cur_len; | |
422 | int is_member; | |
423 | int stack = IsCapable(client_p, CLICAP_MULTI_PREFIX); | |
424 | ||
425 | if(ShowChannel(client_p, chptr)) | |
426 | { | |
427 | is_member = IsMember(client_p, chptr); | |
428 | ||
b2f0da88 | 429 | cur_len = mlen = rb_sprintf(lbuf, form_str(RPL_NAMREPLY), |
212380e3 AC |
430 | me.name, client_p->name, |
431 | channel_pub_or_secret(chptr), chptr->chname); | |
432 | ||
433 | t = lbuf + cur_len; | |
434 | ||
5cefa1d6 | 435 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
436 | { |
437 | msptr = ptr->data; | |
438 | target_p = msptr->client_p; | |
439 | ||
440 | if(IsInvisible(target_p) && !is_member) | |
441 | continue; | |
442 | ||
443 | /* space, possible "@+" prefix */ | |
444 | if(cur_len + strlen(target_p->name) + 3 >= BUFSIZE - 3) | |
445 | { | |
446 | *(t - 1) = '\0'; | |
447 | sendto_one(client_p, "%s", lbuf); | |
448 | cur_len = mlen; | |
449 | t = lbuf + mlen; | |
450 | } | |
451 | ||
b2f0da88 | 452 | tlen = rb_sprintf(t, "%s%s ", find_channel_status(msptr, stack), |
212380e3 AC |
453 | target_p->name); |
454 | ||
455 | cur_len += tlen; | |
456 | t += tlen; | |
457 | } | |
458 | ||
459 | /* The old behaviour here was to always output our buffer, | |
460 | * even if there are no clients we can show. This happens | |
461 | * when a client does "NAMES" with no parameters, and all | |
462 | * the clients on a -sp channel are +i. I dont see a good | |
463 | * reason for keeping that behaviour, as it just wastes | |
464 | * bandwidth. --anfl | |
465 | */ | |
466 | if(cur_len != mlen) | |
467 | { | |
468 | *(t - 1) = '\0'; | |
469 | sendto_one(client_p, "%s", lbuf); | |
470 | } | |
471 | } | |
472 | ||
473 | if(show_eon) | |
474 | sendto_one(client_p, form_str(RPL_ENDOFNAMES), | |
475 | me.name, client_p->name, chptr->chname); | |
476 | } | |
477 | ||
478 | /* del_invite() | |
479 | * | |
480 | * input - channel to remove invite from, client to remove | |
481 | * output - | |
482 | * side effects - user is removed from invite list, if exists | |
483 | */ | |
484 | void | |
485 | del_invite(struct Channel *chptr, struct Client *who) | |
486 | { | |
330fc5c1 AC |
487 | rb_dlinkFindDestroy(who, &chptr->invites); |
488 | rb_dlinkFindDestroy(chptr, &who->user->invited); | |
212380e3 AC |
489 | } |
490 | ||
491 | /* is_banned() | |
492 | * | |
493 | * input - channel to check bans for, user to check bans against | |
494 | * optional prebuilt buffers | |
495 | * output - 1 if banned, else 0 | |
496 | * side effects - | |
497 | */ | |
498 | int | |
499 | is_banned(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
500 | const char *s, const char *s2) | |
501 | { | |
502 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
503 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
504 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
505 | char *s3 = NULL; | |
330fc5c1 | 506 | rb_dlink_node *ptr; |
212380e3 AC |
507 | struct Ban *actualBan = NULL; |
508 | struct Ban *actualExcept = NULL; | |
509 | ||
510 | if(!MyClient(who)) | |
511 | return 0; | |
512 | ||
513 | /* if the buffers havent been built, do it here */ | |
514 | if(s == NULL) | |
515 | { | |
b2f0da88 AC |
516 | rb_sprintf(src_host, "%s!%s@%s", who->name, who->username, who->host); |
517 | rb_sprintf(src_iphost, "%s!%s@%s", who->name, who->username, who->sockhost); | |
212380e3 AC |
518 | |
519 | s = src_host; | |
520 | s2 = src_iphost; | |
521 | } | |
522 | if(who->localClient->mangledhost != NULL) | |
523 | { | |
524 | /* if host mangling mode enabled, also check their real host */ | |
525 | if(!strcmp(who->host, who->localClient->mangledhost)) | |
526 | { | |
b2f0da88 | 527 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->orighost); |
212380e3 AC |
528 | s3 = src_althost; |
529 | } | |
530 | /* if host mangling mode not enabled and no other spoof, | |
531 | * also check the mangled form of their host */ | |
532 | else if (!IsDynSpoof(who)) | |
533 | { | |
b2f0da88 | 534 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->localClient->mangledhost); |
212380e3 AC |
535 | s3 = src_althost; |
536 | } | |
537 | } | |
538 | ||
5cefa1d6 | 539 | RB_DLINK_FOREACH(ptr, chptr->banlist.head) |
212380e3 AC |
540 | { |
541 | actualBan = ptr->data; | |
542 | if(match(actualBan->banstr, s) || | |
543 | match(actualBan->banstr, s2) || | |
544 | match_cidr(actualBan->banstr, s2) || | |
545 | match_extban(actualBan->banstr, who, chptr, CHFL_BAN) || | |
546 | (s3 != NULL && match(actualBan->banstr, s3))) | |
547 | break; | |
548 | else | |
549 | actualBan = NULL; | |
550 | } | |
551 | ||
552 | if((actualBan != NULL) && ConfigChannel.use_except) | |
553 | { | |
5cefa1d6 | 554 | RB_DLINK_FOREACH(ptr, chptr->exceptlist.head) |
212380e3 AC |
555 | { |
556 | actualExcept = ptr->data; | |
557 | ||
558 | /* theyre exempted.. */ | |
559 | if(match(actualExcept->banstr, s) || | |
560 | match(actualExcept->banstr, s2) || | |
561 | match_cidr(actualExcept->banstr, s2) || | |
562 | match_extban(actualExcept->banstr, who, chptr, CHFL_EXCEPTION) || | |
563 | (s3 != NULL && match(actualExcept->banstr, s3))) | |
564 | { | |
565 | /* cache the fact theyre not banned */ | |
566 | if(msptr != NULL) | |
567 | { | |
568 | msptr->bants = chptr->bants; | |
569 | msptr->flags &= ~CHFL_BANNED; | |
570 | } | |
571 | ||
572 | return CHFL_EXCEPTION; | |
573 | } | |
574 | } | |
575 | } | |
576 | ||
577 | /* cache the banned/not banned status */ | |
578 | if(msptr != NULL) | |
579 | { | |
580 | msptr->bants = chptr->bants; | |
581 | ||
582 | if(actualBan != NULL) | |
583 | { | |
584 | msptr->flags |= CHFL_BANNED; | |
585 | return CHFL_BAN; | |
586 | } | |
587 | else | |
588 | { | |
589 | msptr->flags &= ~CHFL_BANNED; | |
590 | return 0; | |
591 | } | |
592 | } | |
593 | ||
594 | return ((actualBan ? CHFL_BAN : 0)); | |
595 | } | |
596 | ||
597 | /* is_quieted() | |
598 | * | |
599 | * input - channel to check bans for, user to check bans against | |
600 | * optional prebuilt buffers | |
601 | * output - 1 if banned, else 0 | |
602 | * side effects - | |
603 | */ | |
604 | int | |
605 | is_quieted(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
606 | const char *s, const char *s2) | |
607 | { | |
608 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
609 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
610 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
611 | char *s3 = NULL; | |
330fc5c1 | 612 | rb_dlink_node *ptr; |
212380e3 AC |
613 | struct Ban *actualBan = NULL; |
614 | struct Ban *actualExcept = NULL; | |
615 | ||
616 | if(!MyClient(who)) | |
617 | return 0; | |
618 | ||
619 | /* if the buffers havent been built, do it here */ | |
620 | if(s == NULL) | |
621 | { | |
b2f0da88 AC |
622 | rb_sprintf(src_host, "%s!%s@%s", who->name, who->username, who->host); |
623 | rb_sprintf(src_iphost, "%s!%s@%s", who->name, who->username, who->sockhost); | |
212380e3 AC |
624 | |
625 | s = src_host; | |
626 | s2 = src_iphost; | |
627 | } | |
628 | if(who->localClient->mangledhost != NULL) | |
629 | { | |
630 | /* if host mangling mode enabled, also check their real host */ | |
631 | if(!strcmp(who->host, who->localClient->mangledhost)) | |
632 | { | |
b2f0da88 | 633 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->orighost); |
212380e3 AC |
634 | s3 = src_althost; |
635 | } | |
636 | /* if host mangling mode not enabled and no other spoof, | |
637 | * also check the mangled form of their host */ | |
638 | else if (!IsDynSpoof(who)) | |
639 | { | |
b2f0da88 | 640 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->localClient->mangledhost); |
212380e3 AC |
641 | s3 = src_althost; |
642 | } | |
643 | } | |
644 | ||
5cefa1d6 | 645 | RB_DLINK_FOREACH(ptr, chptr->quietlist.head) |
212380e3 AC |
646 | { |
647 | actualBan = ptr->data; | |
648 | if(match(actualBan->banstr, s) || | |
649 | match(actualBan->banstr, s2) || | |
650 | match_cidr(actualBan->banstr, s2) || | |
651 | match_extban(actualBan->banstr, who, chptr, CHFL_QUIET) || | |
652 | (s3 != NULL && match(actualBan->banstr, s3))) | |
653 | break; | |
654 | else | |
655 | actualBan = NULL; | |
656 | } | |
657 | ||
658 | if((actualBan != NULL) && ConfigChannel.use_except) | |
659 | { | |
5cefa1d6 | 660 | RB_DLINK_FOREACH(ptr, chptr->exceptlist.head) |
212380e3 AC |
661 | { |
662 | actualExcept = ptr->data; | |
663 | ||
664 | /* theyre exempted.. */ | |
665 | if(match(actualExcept->banstr, s) || | |
666 | match(actualExcept->banstr, s2) || | |
667 | match_cidr(actualExcept->banstr, s2) || | |
668 | match_extban(actualExcept->banstr, who, chptr, CHFL_EXCEPTION) || | |
669 | (s3 != NULL && match(actualExcept->banstr, s3))) | |
670 | { | |
671 | /* cache the fact theyre not banned */ | |
672 | if(msptr != NULL) | |
673 | { | |
674 | msptr->bants = chptr->bants; | |
675 | msptr->flags &= ~CHFL_BANNED; | |
676 | } | |
677 | ||
678 | return CHFL_EXCEPTION; | |
679 | } | |
680 | } | |
681 | } | |
682 | ||
683 | /* cache the banned/not banned status */ | |
684 | if(msptr != NULL) | |
685 | { | |
686 | msptr->bants = chptr->bants; | |
687 | ||
688 | if(actualBan != NULL) | |
689 | { | |
690 | msptr->flags |= CHFL_BANNED; | |
691 | return CHFL_BAN; | |
692 | } | |
693 | else | |
694 | { | |
695 | msptr->flags &= ~CHFL_BANNED; | |
696 | return 0; | |
697 | } | |
698 | } | |
699 | ||
700 | return ((actualBan ? CHFL_BAN : 0)); | |
701 | } | |
702 | ||
703 | /* can_join() | |
704 | * | |
705 | * input - client to check, channel to check for, key | |
706 | * output - reason for not being able to join, else 0 | |
707 | * side effects - | |
708 | */ | |
709 | int | |
710 | can_join(struct Client *source_p, struct Channel *chptr, char *key) | |
711 | { | |
330fc5c1 AC |
712 | rb_dlink_node *invite = NULL; |
713 | rb_dlink_node *ptr; | |
212380e3 AC |
714 | struct Ban *invex = NULL; |
715 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
716 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
717 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
718 | int use_althost = 0; | |
1ebf4db4 | 719 | int i = 0; |
212380e3 AC |
720 | hook_data_channel moduledata; |
721 | ||
722 | s_assert(source_p->localClient != NULL); | |
723 | ||
b2f0da88 AC |
724 | rb_sprintf(src_host, "%s!%s@%s", source_p->name, source_p->username, source_p->host); |
725 | rb_sprintf(src_iphost, "%s!%s@%s", source_p->name, source_p->username, source_p->sockhost); | |
212380e3 AC |
726 | if(source_p->localClient->mangledhost != NULL) |
727 | { | |
728 | /* if host mangling mode enabled, also check their real host */ | |
729 | if(!strcmp(source_p->host, source_p->localClient->mangledhost)) | |
730 | { | |
b2f0da88 | 731 | rb_sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->orighost); |
212380e3 AC |
732 | use_althost = 1; |
733 | } | |
734 | /* if host mangling mode not enabled and no other spoof, | |
735 | * also check the mangled form of their host */ | |
736 | else if (!IsDynSpoof(source_p)) | |
737 | { | |
b2f0da88 | 738 | rb_sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->localClient->mangledhost); |
212380e3 AC |
739 | use_althost = 1; |
740 | } | |
741 | } | |
742 | ||
743 | if((is_banned(chptr, source_p, NULL, src_host, src_iphost)) == CHFL_BAN) | |
744 | return (ERR_BANNEDFROMCHAN); | |
745 | ||
746 | if(chptr->mode.mode & MODE_INVITEONLY) | |
747 | { | |
5cefa1d6 | 748 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
212380e3 | 749 | { |
1ebf4db4 | 750 | if(invite->data == chptr) |
212380e3 AC |
751 | break; |
752 | } | |
1ebf4db4 | 753 | if(invite == NULL) |
212380e3 AC |
754 | { |
755 | if(!ConfigChannel.use_invex) | |
756 | return (ERR_INVITEONLYCHAN); | |
5cefa1d6 | 757 | RB_DLINK_FOREACH(ptr, chptr->invexlist.head) |
212380e3 AC |
758 | { |
759 | invex = ptr->data; | |
760 | if(match(invex->banstr, src_host) | |
761 | || match(invex->banstr, src_iphost) | |
762 | || match_cidr(invex->banstr, src_iphost) | |
763 | || match_extban(invex->banstr, source_p, chptr, CHFL_INVEX) | |
764 | || (use_althost && match(invex->banstr, src_althost))) | |
765 | break; | |
766 | } | |
767 | if(ptr == NULL) | |
768 | return (ERR_INVITEONLYCHAN); | |
769 | } | |
770 | } | |
771 | ||
772 | if(*chptr->mode.key && (EmptyString(key) || irccmp(chptr->mode.key, key))) | |
773 | return (ERR_BADCHANNELKEY); | |
774 | ||
775 | if(chptr->mode.limit && | |
330fc5c1 | 776 | rb_dlink_list_length(&chptr->members) >= (unsigned long) chptr->mode.limit) |
1ebf4db4 | 777 | i = ERR_CHANNELISFULL; |
212380e3 | 778 | if(chptr->mode.mode & MODE_REGONLY && EmptyString(source_p->user->suser)) |
1ebf4db4 | 779 | i = ERR_NEEDREGGEDNICK; |
212380e3 | 780 | /* join throttling stuff --nenolod */ |
1ebf4db4 | 781 | else if(chptr->mode.join_num > 0 && chptr->mode.join_time > 0) |
212380e3 | 782 | { |
e3354945 | 783 | if ((rb_current_time() - chptr->join_delta <= |
212380e3 AC |
784 | chptr->mode.join_time) && (chptr->join_count >= |
785 | chptr->mode.join_num)) | |
1ebf4db4 JT |
786 | i = ERR_THROTTLE; |
787 | } | |
788 | ||
789 | /* allow /invite to override +l/+r/+j also -- jilles */ | |
790 | if (i != 0 && invite == NULL) | |
791 | { | |
5cefa1d6 | 792 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
1ebf4db4 JT |
793 | { |
794 | if(invite->data == chptr) | |
795 | break; | |
796 | } | |
797 | if (invite == NULL) | |
798 | return i; | |
212380e3 AC |
799 | } |
800 | ||
801 | moduledata.client = source_p; | |
802 | moduledata.chptr = chptr; | |
803 | moduledata.approved = 0; | |
804 | ||
805 | call_hook(h_can_join, &moduledata); | |
806 | ||
807 | return moduledata.approved; | |
808 | } | |
809 | ||
810 | /* can_send() | |
811 | * | |
812 | * input - user to check in channel, membership pointer | |
813 | * output - whether can explicitly send or not, else CAN_SEND_NONOP | |
814 | * side effects - | |
815 | */ | |
816 | int | |
817 | can_send(struct Channel *chptr, struct Client *source_p, struct membership *msptr) | |
818 | { | |
819 | if(IsServer(source_p) || IsService(source_p)) | |
820 | return CAN_SEND_OPV; | |
821 | ||
822 | if(MyClient(source_p) && hash_find_resv(chptr->chname) && | |
823 | !IsOper(source_p) && !IsExemptResv(source_p)) | |
824 | return CAN_SEND_NO; | |
825 | ||
826 | if(msptr == NULL) | |
827 | { | |
828 | msptr = find_channel_membership(chptr, source_p); | |
829 | ||
830 | if(msptr == NULL) | |
831 | { | |
832 | /* if its +m or +n and theyre not in the channel, | |
833 | * they cant send. we dont check bans here because | |
834 | * theres no possibility of caching them --fl | |
835 | */ | |
836 | if(chptr->mode.mode & MODE_NOPRIVMSGS || chptr->mode.mode & MODE_MODERATED) | |
837 | return CAN_SEND_NO; | |
838 | else | |
839 | return CAN_SEND_NONOP; | |
840 | } | |
841 | } | |
842 | ||
843 | if(is_chanop_voiced(msptr)) | |
844 | return CAN_SEND_OPV; | |
845 | ||
846 | if(chptr->mode.mode & MODE_MODERATED) | |
847 | return CAN_SEND_NO; | |
848 | ||
849 | if(MyClient(source_p)) | |
850 | { | |
851 | /* cached can_send */ | |
852 | if(msptr->bants == chptr->bants) | |
853 | { | |
854 | if(can_send_banned(msptr)) | |
855 | return CAN_SEND_NO; | |
856 | } | |
857 | else if(is_banned(chptr, source_p, msptr, NULL, NULL) == CHFL_BAN | |
858 | || is_quieted(chptr, source_p, msptr, NULL, NULL) == CHFL_BAN) | |
859 | return CAN_SEND_NO; | |
860 | } | |
861 | ||
862 | return CAN_SEND_NONOP; | |
863 | } | |
864 | ||
865 | /* find_bannickchange_channel() | |
866 | * Input: client to check | |
867 | * Output: channel preventing nick change | |
868 | */ | |
869 | struct Channel * | |
870 | find_bannickchange_channel(struct Client *client_p) | |
871 | { | |
872 | struct Channel *chptr; | |
873 | struct membership *msptr; | |
330fc5c1 | 874 | rb_dlink_node *ptr; |
212380e3 AC |
875 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; |
876 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
877 | ||
878 | if (!MyClient(client_p)) | |
879 | return NULL; | |
880 | ||
b2f0da88 AC |
881 | rb_sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host); |
882 | rb_sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost); | |
212380e3 | 883 | |
5cefa1d6 | 884 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
885 | { |
886 | msptr = ptr->data; | |
887 | chptr = msptr->chptr; | |
888 | if (is_chanop_voiced(msptr)) | |
889 | continue; | |
890 | /* cached can_send */ | |
891 | if (msptr->bants == chptr->bants) | |
892 | { | |
893 | if (can_send_banned(msptr)) | |
894 | return chptr; | |
895 | } | |
896 | else if (is_banned(chptr, client_p, msptr, src_host, src_iphost) == CHFL_BAN | |
897 | || is_quieted(chptr, client_p, msptr, src_host, src_iphost) == CHFL_BAN) | |
898 | return chptr; | |
899 | } | |
900 | return NULL; | |
901 | } | |
902 | ||
903 | /* void check_spambot_warning(struct Client *source_p) | |
904 | * Input: Client to check, channel name or NULL if this is a part. | |
905 | * Output: none | |
906 | * Side-effects: Updates the client's oper_warn_count_down, warns the | |
907 | * IRC operators if necessary, and updates join_leave_countdown as | |
908 | * needed. | |
909 | */ | |
910 | void | |
911 | check_spambot_warning(struct Client *source_p, const char *name) | |
912 | { | |
913 | int t_delta; | |
914 | int decrement_count; | |
915 | if((GlobalSetOptions.spam_num && | |
916 | (source_p->localClient->join_leave_count >= GlobalSetOptions.spam_num))) | |
917 | { | |
918 | if(source_p->localClient->oper_warn_count_down > 0) | |
919 | source_p->localClient->oper_warn_count_down--; | |
920 | else | |
921 | source_p->localClient->oper_warn_count_down = 0; | |
e0c1f4ec JT |
922 | if(source_p->localClient->oper_warn_count_down == 0 && |
923 | name != NULL) | |
212380e3 AC |
924 | { |
925 | /* Its already known as a possible spambot */ | |
e0c1f4ec JT |
926 | sendto_realops_snomask(SNO_BOTS, L_NETWIDE, |
927 | "User %s (%s@%s) trying to join %s is a possible spambot", | |
928 | source_p->name, | |
929 | source_p->username, source_p->orighost, name); | |
212380e3 AC |
930 | source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN; |
931 | } | |
932 | } | |
933 | else | |
934 | { | |
935 | if((t_delta = | |
e3354945 | 936 | (rb_current_time() - source_p->localClient->last_leave_time)) > |
212380e3 AC |
937 | JOIN_LEAVE_COUNT_EXPIRE_TIME) |
938 | { | |
939 | decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME); | |
981586df JT |
940 | if(name != NULL) |
941 | ; | |
942 | else if(decrement_count > source_p->localClient->join_leave_count) | |
212380e3 AC |
943 | source_p->localClient->join_leave_count = 0; |
944 | else | |
945 | source_p->localClient->join_leave_count -= decrement_count; | |
946 | } | |
947 | else | |
948 | { | |
e3354945 | 949 | if((rb_current_time() - |
212380e3 AC |
950 | (source_p->localClient->last_join_time)) < GlobalSetOptions.spam_time) |
951 | { | |
952 | /* oh, its a possible spambot */ | |
953 | source_p->localClient->join_leave_count++; | |
954 | } | |
955 | } | |
956 | if(name != NULL) | |
e3354945 | 957 | source_p->localClient->last_join_time = rb_current_time(); |
212380e3 | 958 | else |
e3354945 | 959 | source_p->localClient->last_leave_time = rb_current_time(); |
212380e3 AC |
960 | } |
961 | } | |
962 | ||
963 | /* check_splitmode() | |
964 | * | |
965 | * input - | |
966 | * output - | |
967 | * side effects - compares usercount and servercount against their split | |
968 | * values and adjusts splitmode accordingly | |
969 | */ | |
970 | void | |
971 | check_splitmode(void *unused) | |
972 | { | |
973 | if(splitchecking && (ConfigChannel.no_join_on_split || ConfigChannel.no_create_on_split)) | |
974 | { | |
975 | /* not split, we're being asked to check now because someone | |
976 | * has left | |
977 | */ | |
978 | if(!splitmode) | |
979 | { | |
980 | if(eob_count < split_servers || Count.total < split_users) | |
981 | { | |
982 | splitmode = 1; | |
983 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
984 | "Network split, activating splitmode"); | |
c608a061 | 985 | check_splitmode_ev = rb_event_addish("check_splitmode", check_splitmode, NULL, 2); |
212380e3 AC |
986 | } |
987 | } | |
988 | /* in splitmode, check whether its finished */ | |
989 | else if(eob_count >= split_servers && Count.total >= split_users) | |
990 | { | |
991 | splitmode = 0; | |
992 | ||
993 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
994 | "Network rejoined, deactivating splitmode"); | |
995 | ||
c608a061 | 996 | rb_event_delete(check_splitmode_ev); |
6a309903 | 997 | check_splitmode_ev = NULL; |
212380e3 AC |
998 | } |
999 | } | |
1000 | } | |
1001 | ||
1002 | ||
1003 | /* allocate_topic() | |
1004 | * | |
1005 | * input - channel to allocate topic for | |
1006 | * output - 1 on success, else 0 | |
1007 | * side effects - channel gets a topic allocated | |
1008 | */ | |
1009 | static void | |
1010 | allocate_topic(struct Channel *chptr) | |
1011 | { | |
1012 | void *ptr; | |
1013 | ||
1014 | if(chptr == NULL) | |
1015 | return; | |
1016 | ||
398b6a73 | 1017 | ptr = rb_bh_alloc(topic_heap); |
212380e3 AC |
1018 | |
1019 | /* Basically we allocate one large block for the topic and | |
1020 | * the topic info. We then split it up into two and shove it | |
1021 | * in the chptr | |
1022 | */ | |
1023 | chptr->topic = ptr; | |
1024 | chptr->topic_info = (char *) ptr + TOPICLEN + 1; | |
1025 | *chptr->topic = '\0'; | |
1026 | *chptr->topic_info = '\0'; | |
1027 | } | |
1028 | ||
1029 | /* free_topic() | |
1030 | * | |
1031 | * input - channel which has topic to free | |
1032 | * output - | |
1033 | * side effects - channels topic is free'd | |
1034 | */ | |
1035 | static void | |
1036 | free_topic(struct Channel *chptr) | |
1037 | { | |
1038 | void *ptr; | |
1039 | ||
1040 | if(chptr == NULL || chptr->topic == NULL) | |
1041 | return; | |
1042 | ||
1043 | /* This is safe for now - If you change allocate_topic you | |
1044 | * MUST change this as well | |
1045 | */ | |
1046 | ptr = chptr->topic; | |
398b6a73 | 1047 | rb_bh_free(topic_heap, ptr); |
212380e3 AC |
1048 | chptr->topic = NULL; |
1049 | chptr->topic_info = NULL; | |
1050 | } | |
1051 | ||
1052 | /* set_channel_topic() | |
1053 | * | |
1054 | * input - channel, topic to set, topic info and topic ts | |
1055 | * output - | |
1056 | * side effects - channels topic, topic info and TS are set. | |
1057 | */ | |
1058 | void | |
1059 | set_channel_topic(struct Channel *chptr, const char *topic, const char *topic_info, time_t topicts) | |
1060 | { | |
1061 | if(strlen(topic) > 0) | |
1062 | { | |
1063 | if(chptr->topic == NULL) | |
1064 | allocate_topic(chptr); | |
f427c8b0 VY |
1065 | rb_strlcpy(chptr->topic, topic, TOPICLEN + 1); |
1066 | rb_strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN); | |
212380e3 AC |
1067 | chptr->topic_time = topicts; |
1068 | } | |
1069 | else | |
1070 | { | |
1071 | if(chptr->topic != NULL) | |
1072 | free_topic(chptr); | |
1073 | chptr->topic_time = 0; | |
1074 | } | |
1075 | } | |
1076 | ||
3b8a6350 | 1077 | /* channel_modes() |
212380e3 AC |
1078 | * |
1079 | * inputs - pointer to channel | |
1080 | * - pointer to client | |
f1e35c19 JT |
1081 | * output - string with simple modes |
1082 | * side effects - result from previous calls overwritten | |
212380e3 AC |
1083 | * |
1084 | * Stolen from ShadowIRCd 4 --nenolod | |
1085 | */ | |
1086 | const char * | |
3b8a6350 | 1087 | channel_modes(struct Channel *chptr, struct Client *client_p) |
212380e3 AC |
1088 | { |
1089 | int i; | |
1090 | char buf1[BUFSIZE]; | |
1091 | char buf2[BUFSIZE]; | |
1092 | static char final[BUFSIZE]; | |
1093 | char *mbuf = buf1; | |
1094 | char *pbuf = buf2; | |
1095 | ||
1096 | *mbuf++ = '+'; | |
1097 | *pbuf = '\0'; | |
1098 | ||
efccc22c | 1099 | for (i = 0; i < 256; i++) |
3b8a6350 | 1100 | if(chptr->mode.mode & chmode_flags[i]) |
efccc22c | 1101 | *mbuf++ = i; |
212380e3 | 1102 | |
3b8a6350 | 1103 | if(chptr->mode.limit) |
212380e3 AC |
1104 | { |
1105 | *mbuf++ = 'l'; | |
1106 | ||
f1e35c19 | 1107 | if(!IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1108 | pbuf += rb_sprintf(pbuf, " %d", chptr->mode.limit); |
212380e3 AC |
1109 | } |
1110 | ||
3b8a6350 | 1111 | if(*chptr->mode.key) |
212380e3 AC |
1112 | { |
1113 | *mbuf++ = 'k'; | |
1114 | ||
f1e35c19 | 1115 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1116 | pbuf += rb_sprintf(pbuf, " %s", chptr->mode.key); |
212380e3 AC |
1117 | } |
1118 | ||
3b8a6350 | 1119 | if(chptr->mode.join_num) |
212380e3 AC |
1120 | { |
1121 | *mbuf++ = 'j'; | |
1122 | ||
f1e35c19 | 1123 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 SB |
1124 | pbuf += rb_sprintf(pbuf, " %d:%d", chptr->mode.join_num, |
1125 | chptr->mode.join_time); | |
212380e3 AC |
1126 | } |
1127 | ||
3b8a6350 | 1128 | if(*chptr->mode.forward && (ConfigChannel.use_forward || !IsClient(client_p))) |
212380e3 AC |
1129 | { |
1130 | *mbuf++ = 'f'; | |
1131 | ||
f1e35c19 | 1132 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1133 | pbuf += rb_sprintf(pbuf, " %s", chptr->mode.forward); |
212380e3 AC |
1134 | } |
1135 | ||
1136 | *mbuf = '\0'; | |
1137 | ||
f427c8b0 | 1138 | rb_strlcpy(final, buf1, sizeof final); |
1f9de103 | 1139 | rb_strlcat(final, buf2, sizeof final); |
212380e3 AC |
1140 | return final; |
1141 | } | |
1142 | ||
1143 | /* Now lets do some stuff to keep track of what combinations of | |
1144 | * servers exist... | |
1145 | * Note that the number of combinations doubles each time you add | |
1146 | * something to this list. Each one is only quick if no servers use that | |
1147 | * combination, but if the numbers get too high here MODE will get too | |
1148 | * slow. I suggest if you get more than 7 here, you consider getting rid | |
1149 | * of some and merging or something. If it wasn't for irc+cs we would | |
1150 | * probably not even need to bother about most of these, but unfortunately | |
1151 | * we do. -A1kmm | |
1152 | */ | |
1153 | ||
1154 | /* void init_chcap_usage_counts(void) | |
1155 | * | |
1156 | * Inputs - none | |
1157 | * Output - none | |
1158 | * Side-effects - Initialises the usage counts to zero. Fills in the | |
1159 | * chcap_yes and chcap_no combination tables. | |
1160 | */ | |
1161 | void | |
1162 | init_chcap_usage_counts(void) | |
1163 | { | |
1164 | unsigned long m, c, y, n; | |
1165 | ||
1166 | memset(chcap_combos, 0, sizeof(chcap_combos)); | |
1167 | ||
1168 | /* For every possible combination */ | |
1169 | for (m = 0; m < NCHCAP_COMBOS; m++) | |
1170 | { | |
1171 | /* Check each capab */ | |
1172 | for (c = y = n = 0; c < NCHCAPS; c++) | |
1173 | { | |
1174 | if((m & (1 << c)) == 0) | |
1175 | n |= channel_capabs[c]; | |
1176 | else | |
1177 | y |= channel_capabs[c]; | |
1178 | } | |
1179 | chcap_combos[m].cap_yes = y; | |
1180 | chcap_combos[m].cap_no = n; | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | /* void set_chcap_usage_counts(struct Client *serv_p) | |
1185 | * Input: serv_p; The client whose capabs to register. | |
1186 | * Output: none | |
1187 | * Side-effects: Increments the usage counts for the correct capab | |
1188 | * combination. | |
1189 | */ | |
1190 | void | |
1191 | set_chcap_usage_counts(struct Client *serv_p) | |
1192 | { | |
1193 | int n; | |
1194 | ||
1195 | for (n = 0; n < NCHCAP_COMBOS; n++) | |
1196 | { | |
1197 | if(IsCapable(serv_p, chcap_combos[n].cap_yes) && | |
1198 | NotCapable(serv_p, chcap_combos[n].cap_no)) | |
1199 | { | |
1200 | chcap_combos[n].count++; | |
1201 | return; | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | /* This should be impossible -A1kmm. */ | |
1206 | s_assert(0); | |
1207 | } | |
1208 | ||
1209 | /* void set_chcap_usage_counts(struct Client *serv_p) | |
1210 | * | |
1211 | * Inputs - serv_p; The client whose capabs to register. | |
1212 | * Output - none | |
1213 | * Side-effects - Decrements the usage counts for the correct capab | |
1214 | * combination. | |
1215 | */ | |
1216 | void | |
1217 | unset_chcap_usage_counts(struct Client *serv_p) | |
1218 | { | |
1219 | int n; | |
1220 | ||
1221 | for (n = 0; n < NCHCAP_COMBOS; n++) | |
1222 | { | |
1223 | if(IsCapable(serv_p, chcap_combos[n].cap_yes) && | |
1224 | NotCapable(serv_p, chcap_combos[n].cap_no)) | |
1225 | { | |
1226 | /* Hopefully capabs can't change dynamically or anything... */ | |
1227 | s_assert(chcap_combos[n].count > 0); | |
1228 | ||
1229 | if(chcap_combos[n].count > 0) | |
1230 | chcap_combos[n].count--; | |
1231 | return; | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | /* This should be impossible -A1kmm. */ | |
1236 | s_assert(0); | |
1237 | } | |
1238 | ||
1239 | /* void send_cap_mode_changes(struct Client *client_p, | |
1240 | * struct Client *source_p, | |
1241 | * struct Channel *chptr, int cap, int nocap) | |
1242 | * Input: The client sending(client_p), the source client(source_p), | |
1243 | * the channel to send mode changes for(chptr) | |
1244 | * Output: None. | |
1245 | * Side-effects: Sends the appropriate mode changes to capable servers. | |
1246 | * | |
1247 | * Reverted back to my original design, except that we now keep a count | |
1248 | * of the number of servers which each combination as an optimisation, so | |
1249 | * the capabs combinations which are not needed are not worked out. -A1kmm | |
1250 | */ | |
1251 | void | |
1252 | send_cap_mode_changes(struct Client *client_p, struct Client *source_p, | |
1253 | struct Channel *chptr, struct ChModeChange mode_changes[], int mode_count) | |
1254 | { | |
1255 | static char modebuf[BUFSIZE]; | |
1256 | static char parabuf[BUFSIZE]; | |
1257 | int i, mbl, pbl, nc, mc, preflen, len; | |
1258 | char *pbuf; | |
1259 | const char *arg; | |
1260 | int dir; | |
1261 | int j; | |
1262 | int cap; | |
1263 | int nocap; | |
1264 | int arglen; | |
1265 | ||
1266 | /* Now send to servers... */ | |
1267 | for (j = 0; j < NCHCAP_COMBOS; j++) | |
1268 | { | |
1269 | if(chcap_combos[j].count == 0) | |
1270 | continue; | |
1271 | ||
1272 | mc = 0; | |
1273 | nc = 0; | |
1274 | pbl = 0; | |
1275 | parabuf[0] = 0; | |
1276 | pbuf = parabuf; | |
1277 | dir = MODE_QUERY; | |
1278 | ||
1279 | cap = chcap_combos[j].cap_yes; | |
1280 | nocap = chcap_combos[j].cap_no; | |
1281 | ||
469c9689 AC |
1282 | mbl = preflen = rb_sprintf(modebuf, ":%s TMODE %ld %s ", |
1283 | use_id(source_p), (long) chptr->channelts, | |
1284 | chptr->chname); | |
212380e3 AC |
1285 | |
1286 | /* loop the list of - modes we have */ | |
1287 | for (i = 0; i < mode_count; i++) | |
1288 | { | |
1289 | /* if they dont support the cap we need, or they do support a cap they | |
1290 | * cant have, then dont add it to the modebuf.. that way they wont see | |
1291 | * the mode | |
1292 | */ | |
1293 | if((mode_changes[i].letter == 0) || | |
1294 | ((cap & mode_changes[i].caps) != mode_changes[i].caps) | |
1295 | || ((nocap & mode_changes[i].nocaps) != mode_changes[i].nocaps)) | |
1296 | continue; | |
1297 | ||
fd44b851 JT |
1298 | if(!EmptyString(mode_changes[i].id)) |
1299 | arg = mode_changes[i].id; | |
1300 | else | |
1301 | arg = mode_changes[i].arg; | |
212380e3 AC |
1302 | |
1303 | if(arg) | |
1304 | { | |
1305 | arglen = strlen(arg); | |
1306 | ||
1307 | /* dont even think about it! --fl */ | |
1308 | if(arglen > MODEBUFLEN - 5) | |
1309 | continue; | |
1310 | } | |
1311 | ||
1312 | /* if we're creeping past the buf size, we need to send it and make | |
1313 | * another line for the other modes | |
1314 | * XXX - this could give away server topology with uids being | |
1315 | * different lengths, but not much we can do, except possibly break | |
1316 | * them as if they were the longest of the nick or uid at all times, | |
1317 | * which even then won't work as we don't always know the uid -A1kmm. | |
1318 | */ | |
1319 | if(arg && ((mc == MAXMODEPARAMSSERV) || | |
1320 | ((mbl + pbl + arglen + 4) > (BUFSIZE - 3)))) | |
1321 | { | |
1322 | if(nc != 0) | |
1323 | sendto_server(client_p, chptr, cap, nocap, | |
1324 | "%s %s", modebuf, parabuf); | |
1325 | nc = 0; | |
1326 | mc = 0; | |
1327 | ||
1328 | mbl = preflen; | |
1329 | pbl = 0; | |
1330 | pbuf = parabuf; | |
1331 | parabuf[0] = 0; | |
1332 | dir = MODE_QUERY; | |
1333 | } | |
1334 | ||
1335 | if(dir != mode_changes[i].dir) | |
1336 | { | |
1337 | modebuf[mbl++] = (mode_changes[i].dir == MODE_ADD) ? '+' : '-'; | |
1338 | dir = mode_changes[i].dir; | |
1339 | } | |
1340 | ||
1341 | modebuf[mbl++] = mode_changes[i].letter; | |
1342 | modebuf[mbl] = 0; | |
1343 | nc++; | |
1344 | ||
1345 | if(arg != NULL) | |
1346 | { | |
b2f0da88 | 1347 | len = rb_sprintf(pbuf, "%s ", arg); |
212380e3 AC |
1348 | pbuf += len; |
1349 | pbl += len; | |
1350 | mc++; | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | if(pbl && parabuf[pbl - 1] == ' ') | |
1355 | parabuf[pbl - 1] = 0; | |
1356 | ||
1357 | if(nc != 0) | |
1358 | sendto_server(client_p, chptr, cap, nocap, "%s %s", modebuf, parabuf); | |
1359 | } | |
1360 | } | |
dca9e552 JT |
1361 | |
1362 | void | |
1363 | resv_chan_forcepart(const char *name, const char *reason, int temp_time) | |
1364 | { | |
1365 | rb_dlink_node *ptr; | |
1366 | rb_dlink_node *next_ptr; | |
1367 | struct Channel *chptr; | |
1368 | struct membership *msptr; | |
1369 | struct Client *target_p; | |
1370 | ||
1371 | if(!ConfigChannel.resv_forcepart) | |
1372 | return; | |
1373 | ||
1374 | /* for each user on our server in the channel list | |
1375 | * send them a PART, and notify opers. | |
1376 | */ | |
1377 | chptr = find_channel(name); | |
1378 | if(chptr != NULL) | |
1379 | { | |
1380 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head) | |
1381 | { | |
1382 | msptr = ptr->data; | |
1383 | target_p = msptr->client_p; | |
1384 | ||
1385 | if(IsExemptResv(target_p)) | |
1386 | continue; | |
1387 | ||
1388 | sendto_server(target_p, chptr, CAP_TS6, NOCAPS, | |
1389 | ":%s PART %s", target_p->id, chptr->chname); | |
1390 | ||
1391 | sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s", | |
1392 | target_p->name, target_p->username, | |
1393 | target_p->host, chptr->chname, target_p->name); | |
1394 | ||
1395 | remove_user_from_channel(msptr); | |
1396 | ||
1397 | /* notify opers & user they were removed from the channel */ | |
1398 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1399 | "Forced PART for %s!%s@%s from %s (%s)", | |
1400 | target_p->name, target_p->username, | |
1401 | target_p->host, name, reason); | |
1402 | ||
1403 | if(temp_time > 0) | |
1404 | sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.", | |
1405 | name); | |
1406 | else | |
1407 | sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.", | |
1408 | name); | |
1409 | } | |
1410 | } | |
1411 | } |