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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" |
1c60de97 | 44 | #include "ipv4_from_ipv6.h" |
212380e3 | 45 | |
18e4d421 | 46 | struct config_channel_entry ConfigChannel; |
c3d10343 | 47 | rb_dlink_list global_channel_list; |
b617afdc VY |
48 | static rb_bh *channel_heap; |
49 | static rb_bh *ban_heap; | |
50 | static rb_bh *topic_heap; | |
51 | static rb_bh *member_heap; | |
52 | ||
212380e3 AC |
53 | static void free_topic(struct Channel *chptr); |
54 | ||
55 | static int h_can_join; | |
0aa36c5f | 56 | static int h_can_send; |
749d8c11 | 57 | int h_get_channel_access; |
212380e3 AC |
58 | |
59 | /* init_channels() | |
60 | * | |
61 | * input - | |
62 | * output - | |
63 | * side effects - initialises the various blockheaps | |
64 | */ | |
65 | void | |
66 | init_channels(void) | |
67 | { | |
c608a061 AC |
68 | channel_heap = rb_bh_create(sizeof(struct Channel), CHANNEL_HEAP_SIZE, "channel_heap"); |
69 | ban_heap = rb_bh_create(sizeof(struct Ban), BAN_HEAP_SIZE, "ban_heap"); | |
70 | topic_heap = rb_bh_create(TOPICLEN + 1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE, "topic_heap"); | |
71 | member_heap = rb_bh_create(sizeof(struct membership), MEMBER_HEAP_SIZE, "member_heap"); | |
212380e3 AC |
72 | |
73 | h_can_join = register_hook("can_join"); | |
0aa36c5f | 74 | h_can_send = register_hook("can_send"); |
749d8c11 | 75 | h_get_channel_access = register_hook("get_channel_access"); |
212380e3 AC |
76 | } |
77 | ||
78 | /* | |
79 | * allocate_channel - Allocates a channel | |
80 | */ | |
81 | struct Channel * | |
82 | allocate_channel(const char *chname) | |
83 | { | |
84 | struct Channel *chptr; | |
398b6a73 | 85 | chptr = rb_bh_alloc(channel_heap); |
47a03750 | 86 | chptr->chname = rb_strdup(chname); |
212380e3 AC |
87 | return (chptr); |
88 | } | |
89 | ||
90 | void | |
91 | free_channel(struct Channel *chptr) | |
92 | { | |
637c4932 | 93 | rb_free(chptr->chname); |
78e6b731 | 94 | rb_free(chptr->mode_lock); |
398b6a73 | 95 | rb_bh_free(channel_heap, chptr); |
212380e3 AC |
96 | } |
97 | ||
98 | struct Ban * | |
765d839d | 99 | allocate_ban(const char *banstr, const char *who, const char *forward) |
212380e3 AC |
100 | { |
101 | struct Ban *bptr; | |
398b6a73 | 102 | bptr = rb_bh_alloc(ban_heap); |
47a03750 VY |
103 | bptr->banstr = rb_strdup(banstr); |
104 | bptr->who = rb_strdup(who); | |
765d839d | 105 | bptr->forward = forward ? rb_strdup(forward) : NULL; |
212380e3 AC |
106 | |
107 | return (bptr); | |
108 | } | |
109 | ||
110 | void | |
111 | free_ban(struct Ban *bptr) | |
112 | { | |
637c4932 VY |
113 | rb_free(bptr->banstr); |
114 | rb_free(bptr->who); | |
765d839d | 115 | rb_free(bptr->forward); |
398b6a73 | 116 | rb_bh_free(ban_heap, bptr); |
212380e3 AC |
117 | } |
118 | ||
27912fd4 AC |
119 | /* |
120 | * send_channel_join() | |
121 | * | |
122 | * input - channel to join, client joining. | |
123 | * output - none | |
124 | * side effects - none | |
125 | */ | |
126 | void | |
127 | send_channel_join(struct Channel *chptr, struct Client *client_p) | |
128 | { | |
129 | if (!IsClient(client_p)) | |
130 | return; | |
131 | ||
92052a5c AC |
132 | sendto_channel_local_with_capability(ALL_MEMBERS, NOCAPS, CLICAP_EXTENDED_JOIN, chptr, ":%s!%s@%s JOIN %s", |
133 | client_p->name, client_p->username, client_p->host, chptr->chname); | |
134 | ||
26e9dd93 | 135 | sendto_channel_local_with_capability(ALL_MEMBERS, CLICAP_EXTENDED_JOIN, NOCAPS, chptr, ":%s!%s@%s JOIN %s %s :%s", |
92052a5c AC |
136 | client_p->name, client_p->username, client_p->host, chptr->chname, |
137 | EmptyString(client_p->user->suser) ? "*" : client_p->user->suser, | |
26e9dd93 | 138 | client_p->info); |
c5bbc603 KB |
139 | |
140 | /* Send away message to away-notify enabled clients. */ | |
141 | if (client_p->user->away) | |
142 | sendto_channel_local_with_capability_butone(client_p, ALL_MEMBERS, CLICAP_AWAY_NOTIFY, NOCAPS, chptr, | |
143 | ":%s!%s@%s AWAY :%s", client_p->name, client_p->username, | |
144 | client_p->host, client_p->user->away); | |
27912fd4 | 145 | } |
212380e3 AC |
146 | |
147 | /* find_channel_membership() | |
148 | * | |
149 | * input - channel to find them in, client to find | |
150 | * output - membership of client in channel, else NULL | |
151 | * side effects - | |
152 | */ | |
153 | struct membership * | |
154 | find_channel_membership(struct Channel *chptr, struct Client *client_p) | |
155 | { | |
156 | struct membership *msptr; | |
330fc5c1 | 157 | rb_dlink_node *ptr; |
212380e3 AC |
158 | |
159 | if(!IsClient(client_p)) | |
160 | return NULL; | |
161 | ||
162 | /* Pick the most efficient list to use to be nice to things like | |
163 | * CHANSERV which could be in a large number of channels | |
164 | */ | |
330fc5c1 | 165 | if(rb_dlink_list_length(&chptr->members) < rb_dlink_list_length(&client_p->user->channel)) |
212380e3 | 166 | { |
5cefa1d6 | 167 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
168 | { |
169 | msptr = ptr->data; | |
170 | ||
171 | if(msptr->client_p == client_p) | |
172 | return msptr; | |
173 | } | |
174 | } | |
175 | else | |
176 | { | |
5cefa1d6 | 177 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
178 | { |
179 | msptr = ptr->data; | |
180 | ||
181 | if(msptr->chptr == chptr) | |
182 | return msptr; | |
183 | } | |
184 | } | |
185 | ||
186 | return NULL; | |
187 | } | |
188 | ||
189 | /* find_channel_status() | |
190 | * | |
191 | * input - membership to get status for, whether we can combine flags | |
192 | * output - flags of user on channel | |
193 | * side effects - | |
194 | */ | |
195 | const char * | |
196 | find_channel_status(struct membership *msptr, int combine) | |
197 | { | |
198 | static char buffer[3]; | |
199 | char *p; | |
200 | ||
201 | p = buffer; | |
202 | ||
203 | if(is_chanop(msptr)) | |
204 | { | |
205 | if(!combine) | |
206 | return "@"; | |
207 | *p++ = '@'; | |
208 | } | |
209 | ||
210 | if(is_voiced(msptr)) | |
211 | *p++ = '+'; | |
212 | ||
213 | *p = '\0'; | |
214 | return buffer; | |
215 | } | |
216 | ||
217 | /* add_user_to_channel() | |
218 | * | |
219 | * input - channel to add client to, client to add, channel flags | |
220 | * output - | |
221 | * side effects - user is added to channel | |
222 | */ | |
223 | void | |
224 | add_user_to_channel(struct Channel *chptr, struct Client *client_p, int flags) | |
225 | { | |
226 | struct membership *msptr; | |
227 | ||
228 | s_assert(client_p->user != NULL); | |
229 | if(client_p->user == NULL) | |
230 | return; | |
231 | ||
398b6a73 | 232 | msptr = rb_bh_alloc(member_heap); |
212380e3 AC |
233 | |
234 | msptr->chptr = chptr; | |
235 | msptr->client_p = client_p; | |
236 | msptr->flags = flags; | |
237 | ||
330fc5c1 AC |
238 | rb_dlinkAdd(msptr, &msptr->usernode, &client_p->user->channel); |
239 | rb_dlinkAdd(msptr, &msptr->channode, &chptr->members); | |
212380e3 AC |
240 | |
241 | if(MyClient(client_p)) | |
330fc5c1 | 242 | rb_dlinkAdd(msptr, &msptr->locchannode, &chptr->locmembers); |
212380e3 AC |
243 | } |
244 | ||
245 | /* remove_user_from_channel() | |
246 | * | |
247 | * input - membership pointer to remove from channel | |
248 | * output - | |
249 | * side effects - membership (thus user) is removed from channel | |
250 | */ | |
251 | void | |
252 | remove_user_from_channel(struct membership *msptr) | |
253 | { | |
254 | struct Client *client_p; | |
255 | struct Channel *chptr; | |
256 | s_assert(msptr != NULL); | |
257 | if(msptr == NULL) | |
258 | return; | |
259 | ||
260 | client_p = msptr->client_p; | |
261 | chptr = msptr->chptr; | |
262 | ||
330fc5c1 AC |
263 | rb_dlinkDelete(&msptr->usernode, &client_p->user->channel); |
264 | rb_dlinkDelete(&msptr->channode, &chptr->members); | |
212380e3 AC |
265 | |
266 | if(client_p->servptr == &me) | |
330fc5c1 | 267 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 268 | |
330fc5c1 | 269 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
270 | destroy_channel(chptr); |
271 | ||
398b6a73 | 272 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
273 | |
274 | return; | |
275 | } | |
276 | ||
277 | /* remove_user_from_channels() | |
278 | * | |
279 | * input - user to remove from all channels | |
280 | * output - | |
281 | * side effects - user is removed from all channels | |
282 | */ | |
283 | void | |
284 | remove_user_from_channels(struct Client *client_p) | |
285 | { | |
286 | struct Channel *chptr; | |
287 | struct membership *msptr; | |
330fc5c1 | 288 | rb_dlink_node *ptr; |
637c4932 | 289 | rb_dlink_node *next_ptr; |
212380e3 AC |
290 | |
291 | if(client_p == NULL) | |
292 | return; | |
293 | ||
637c4932 | 294 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->user->channel.head) |
212380e3 AC |
295 | { |
296 | msptr = ptr->data; | |
297 | chptr = msptr->chptr; | |
298 | ||
330fc5c1 | 299 | rb_dlinkDelete(&msptr->channode, &chptr->members); |
212380e3 AC |
300 | |
301 | if(client_p->servptr == &me) | |
330fc5c1 | 302 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 303 | |
330fc5c1 | 304 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
305 | destroy_channel(chptr); |
306 | ||
398b6a73 | 307 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
308 | } |
309 | ||
310 | client_p->user->channel.head = client_p->user->channel.tail = NULL; | |
311 | client_p->user->channel.length = 0; | |
312 | } | |
313 | ||
314 | /* invalidate_bancache_user() | |
315 | * | |
316 | * input - user to invalidate ban cache for | |
317 | * output - | |
318 | * side effects - ban cache is invalidated for all memberships of that user | |
319 | * to be used after a nick change | |
320 | */ | |
321 | void | |
322 | invalidate_bancache_user(struct Client *client_p) | |
323 | { | |
324 | struct membership *msptr; | |
330fc5c1 | 325 | rb_dlink_node *ptr; |
212380e3 AC |
326 | |
327 | if(client_p == NULL) | |
328 | return; | |
329 | ||
5cefa1d6 | 330 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
331 | { |
332 | msptr = ptr->data; | |
333 | msptr->bants = 0; | |
334 | msptr->flags &= ~CHFL_BANNED; | |
335 | } | |
336 | } | |
337 | ||
338 | /* check_channel_name() | |
339 | * | |
340 | * input - channel name | |
341 | * output - 1 if valid channel name, else 0 | |
342 | * side effects - | |
343 | */ | |
344 | int | |
345 | check_channel_name(const char *name) | |
346 | { | |
347 | s_assert(name != NULL); | |
348 | if(name == NULL) | |
349 | return 0; | |
350 | ||
351 | for (; *name; ++name) | |
352 | { | |
353 | if(!IsChanChar(*name)) | |
354 | return 0; | |
355 | } | |
356 | ||
357 | return 1; | |
358 | } | |
359 | ||
360 | /* free_channel_list() | |
361 | * | |
330fc5c1 | 362 | * input - rb_dlink list to free |
212380e3 AC |
363 | * output - |
364 | * side effects - list of b/e/I modes is cleared | |
365 | */ | |
366 | void | |
330fc5c1 | 367 | free_channel_list(rb_dlink_list * list) |
212380e3 | 368 | { |
330fc5c1 | 369 | rb_dlink_node *ptr; |
637c4932 | 370 | rb_dlink_node *next_ptr; |
212380e3 AC |
371 | struct Ban *actualBan; |
372 | ||
637c4932 | 373 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
374 | { |
375 | actualBan = ptr->data; | |
376 | free_ban(actualBan); | |
377 | } | |
378 | ||
379 | list->head = list->tail = NULL; | |
380 | list->length = 0; | |
381 | } | |
382 | ||
383 | /* destroy_channel() | |
384 | * | |
385 | * input - channel to destroy | |
386 | * output - | |
387 | * side effects - channel is obliterated | |
388 | */ | |
389 | void | |
390 | destroy_channel(struct Channel *chptr) | |
391 | { | |
637c4932 | 392 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 393 | |
637c4932 | 394 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) |
212380e3 AC |
395 | { |
396 | del_invite(chptr, ptr->data); | |
397 | } | |
398 | ||
399 | /* free all bans/exceptions/denies */ | |
400 | free_channel_list(&chptr->banlist); | |
401 | free_channel_list(&chptr->exceptlist); | |
402 | free_channel_list(&chptr->invexlist); | |
fea1ad52 | 403 | free_channel_list(&chptr->quietlist); |
212380e3 AC |
404 | |
405 | /* Free the topic */ | |
406 | free_topic(chptr); | |
407 | ||
330fc5c1 | 408 | rb_dlinkDelete(&chptr->node, &global_channel_list); |
212380e3 AC |
409 | del_from_channel_hash(chptr->chname, chptr); |
410 | free_channel(chptr); | |
411 | } | |
412 | ||
413 | /* channel_pub_or_secret() | |
414 | * | |
415 | * input - channel | |
416 | * output - "=" if public, "@" if secret, else "*" | |
417 | * side effects - | |
418 | */ | |
419 | static const char * | |
420 | channel_pub_or_secret(struct Channel *chptr) | |
421 | { | |
422 | if(PubChannel(chptr)) | |
423 | return ("="); | |
424 | else if(SecretChannel(chptr)) | |
425 | return ("@"); | |
426 | return ("*"); | |
427 | } | |
428 | ||
429 | /* channel_member_names() | |
430 | * | |
431 | * input - channel to list, client to list to, show endofnames | |
432 | * output - | |
433 | * side effects - client is given list of users on channel | |
434 | */ | |
435 | void | |
436 | channel_member_names(struct Channel *chptr, struct Client *client_p, int show_eon) | |
437 | { | |
438 | struct membership *msptr; | |
439 | struct Client *target_p; | |
330fc5c1 | 440 | rb_dlink_node *ptr; |
212380e3 AC |
441 | char lbuf[BUFSIZE]; |
442 | char *t; | |
443 | int mlen; | |
444 | int tlen; | |
445 | int cur_len; | |
446 | int is_member; | |
447 | int stack = IsCapable(client_p, CLICAP_MULTI_PREFIX); | |
448 | ||
449 | if(ShowChannel(client_p, chptr)) | |
450 | { | |
451 | is_member = IsMember(client_p, chptr); | |
452 | ||
b2f0da88 | 453 | cur_len = mlen = rb_sprintf(lbuf, form_str(RPL_NAMREPLY), |
212380e3 AC |
454 | me.name, client_p->name, |
455 | channel_pub_or_secret(chptr), chptr->chname); | |
456 | ||
457 | t = lbuf + cur_len; | |
458 | ||
5cefa1d6 | 459 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
460 | { |
461 | msptr = ptr->data; | |
462 | target_p = msptr->client_p; | |
463 | ||
464 | if(IsInvisible(target_p) && !is_member) | |
465 | continue; | |
466 | ||
467 | /* space, possible "@+" prefix */ | |
468 | if(cur_len + strlen(target_p->name) + 3 >= BUFSIZE - 3) | |
469 | { | |
470 | *(t - 1) = '\0'; | |
471 | sendto_one(client_p, "%s", lbuf); | |
472 | cur_len = mlen; | |
473 | t = lbuf + mlen; | |
474 | } | |
475 | ||
b2f0da88 | 476 | tlen = rb_sprintf(t, "%s%s ", find_channel_status(msptr, stack), |
212380e3 AC |
477 | target_p->name); |
478 | ||
479 | cur_len += tlen; | |
480 | t += tlen; | |
481 | } | |
482 | ||
483 | /* The old behaviour here was to always output our buffer, | |
484 | * even if there are no clients we can show. This happens | |
485 | * when a client does "NAMES" with no parameters, and all | |
486 | * the clients on a -sp channel are +i. I dont see a good | |
487 | * reason for keeping that behaviour, as it just wastes | |
488 | * bandwidth. --anfl | |
489 | */ | |
490 | if(cur_len != mlen) | |
491 | { | |
492 | *(t - 1) = '\0'; | |
493 | sendto_one(client_p, "%s", lbuf); | |
494 | } | |
495 | } | |
496 | ||
497 | if(show_eon) | |
498 | sendto_one(client_p, form_str(RPL_ENDOFNAMES), | |
499 | me.name, client_p->name, chptr->chname); | |
500 | } | |
501 | ||
502 | /* del_invite() | |
503 | * | |
504 | * input - channel to remove invite from, client to remove | |
505 | * output - | |
506 | * side effects - user is removed from invite list, if exists | |
507 | */ | |
508 | void | |
509 | del_invite(struct Channel *chptr, struct Client *who) | |
510 | { | |
330fc5c1 AC |
511 | rb_dlinkFindDestroy(who, &chptr->invites); |
512 | rb_dlinkFindDestroy(chptr, &who->user->invited); | |
212380e3 AC |
513 | } |
514 | ||
a14de124 | 515 | /* is_banned_list() |
212380e3 | 516 | * |
a14de124 JT |
517 | * input - channel to check bans for, ban list (banlist or quietlist), |
518 | * user to check bans against, optional prebuilt buffers, | |
519 | * optional forward channel pointer | |
212380e3 AC |
520 | * output - 1 if banned, else 0 |
521 | * side effects - | |
522 | */ | |
a14de124 JT |
523 | static int |
524 | is_banned_list(struct Channel *chptr, rb_dlink_list *list, | |
525 | struct Client *who, struct membership *msptr, | |
526 | const char *s, const char *s2, const char **forward) | |
212380e3 AC |
527 | { |
528 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
529 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
530 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
1c60de97 | 531 | char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6]; |
212380e3 | 532 | char *s3 = NULL; |
1c60de97 JT |
533 | char *s4 = NULL; |
534 | struct sockaddr_in ip4; | |
330fc5c1 | 535 | rb_dlink_node *ptr; |
212380e3 AC |
536 | struct Ban *actualBan = NULL; |
537 | struct Ban *actualExcept = NULL; | |
538 | ||
539 | if(!MyClient(who)) | |
540 | return 0; | |
541 | ||
542 | /* if the buffers havent been built, do it here */ | |
543 | if(s == NULL) | |
544 | { | |
b2f0da88 AC |
545 | rb_sprintf(src_host, "%s!%s@%s", who->name, who->username, who->host); |
546 | rb_sprintf(src_iphost, "%s!%s@%s", who->name, who->username, who->sockhost); | |
212380e3 AC |
547 | |
548 | s = src_host; | |
549 | s2 = src_iphost; | |
550 | } | |
551 | if(who->localClient->mangledhost != NULL) | |
552 | { | |
553 | /* if host mangling mode enabled, also check their real host */ | |
554 | if(!strcmp(who->host, who->localClient->mangledhost)) | |
555 | { | |
b2f0da88 | 556 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->orighost); |
212380e3 AC |
557 | s3 = src_althost; |
558 | } | |
559 | /* if host mangling mode not enabled and no other spoof, | |
560 | * also check the mangled form of their host */ | |
561 | else if (!IsDynSpoof(who)) | |
562 | { | |
b2f0da88 | 563 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->localClient->mangledhost); |
212380e3 AC |
564 | s3 = src_althost; |
565 | } | |
566 | } | |
1c60de97 JT |
567 | #ifdef RB_IPV6 |
568 | if(who->localClient->ip.ss_family == AF_INET6 && | |
569 | ipv4_from_ipv6((const struct sockaddr_in6 *)&who->localClient->ip, &ip4)) | |
570 | { | |
571 | rb_sprintf(src_ip4host, "%s!%s@", who->name, who->username); | |
572 | s4 = src_ip4host + strlen(src_ip4host); | |
573 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
574 | s4, src_ip4host + sizeof src_ip4host - s4); | |
575 | s4 = src_ip4host; | |
576 | } | |
577 | #endif | |
212380e3 | 578 | |
a14de124 | 579 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
580 | { |
581 | actualBan = ptr->data; | |
582 | if(match(actualBan->banstr, s) || | |
583 | match(actualBan->banstr, s2) || | |
584 | match_cidr(actualBan->banstr, s2) || | |
585 | match_extban(actualBan->banstr, who, chptr, CHFL_BAN) || | |
1c60de97 JT |
586 | (s3 != NULL && match(actualBan->banstr, s3)) |
587 | #ifdef RB_IPV6 | |
588 | || | |
589 | (s4 != NULL && (match(actualBan->banstr, s4) || match_cidr(actualBan->banstr, s4))) | |
590 | #endif | |
591 | ) | |
212380e3 AC |
592 | break; |
593 | else | |
594 | actualBan = NULL; | |
595 | } | |
596 | ||
597 | if((actualBan != NULL) && ConfigChannel.use_except) | |
598 | { | |
5cefa1d6 | 599 | RB_DLINK_FOREACH(ptr, chptr->exceptlist.head) |
212380e3 AC |
600 | { |
601 | actualExcept = ptr->data; | |
602 | ||
603 | /* theyre exempted.. */ | |
604 | if(match(actualExcept->banstr, s) || | |
605 | match(actualExcept->banstr, s2) || | |
606 | match_cidr(actualExcept->banstr, s2) || | |
607 | match_extban(actualExcept->banstr, who, chptr, CHFL_EXCEPTION) || | |
608 | (s3 != NULL && match(actualExcept->banstr, s3))) | |
609 | { | |
610 | /* cache the fact theyre not banned */ | |
611 | if(msptr != NULL) | |
612 | { | |
613 | msptr->bants = chptr->bants; | |
614 | msptr->flags &= ~CHFL_BANNED; | |
615 | } | |
616 | ||
617 | return CHFL_EXCEPTION; | |
618 | } | |
619 | } | |
620 | } | |
621 | ||
622 | /* cache the banned/not banned status */ | |
623 | if(msptr != NULL) | |
624 | { | |
625 | msptr->bants = chptr->bants; | |
626 | ||
627 | if(actualBan != NULL) | |
628 | { | |
629 | msptr->flags |= CHFL_BANNED; | |
630 | return CHFL_BAN; | |
631 | } | |
632 | else | |
633 | { | |
634 | msptr->flags &= ~CHFL_BANNED; | |
635 | return 0; | |
636 | } | |
637 | } | |
638 | ||
765d839d EM |
639 | if (actualBan && actualBan->forward && forward) |
640 | *forward = actualBan->forward; | |
641 | ||
212380e3 AC |
642 | return ((actualBan ? CHFL_BAN : 0)); |
643 | } | |
644 | ||
a14de124 JT |
645 | /* is_banned() |
646 | * | |
647 | * input - channel to check bans for, user to check bans against | |
648 | * optional prebuilt buffers, optional forward channel pointer | |
649 | * output - 1 if banned, else 0 | |
650 | * side effects - | |
651 | */ | |
652 | int | |
653 | is_banned(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
654 | const char *s, const char *s2, const char **forward) | |
655 | { | |
656 | return is_banned_list(chptr, &chptr->banlist, who, msptr, s, s2, | |
657 | forward); | |
658 | } | |
659 | ||
212380e3 AC |
660 | /* is_quieted() |
661 | * | |
662 | * input - channel to check bans for, user to check bans against | |
663 | * optional prebuilt buffers | |
664 | * output - 1 if banned, else 0 | |
665 | * side effects - | |
666 | */ | |
667 | int | |
668 | is_quieted(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
669 | const char *s, const char *s2) | |
670 | { | |
a14de124 JT |
671 | return is_banned_list(chptr, &chptr->quietlist, who, msptr, s, s2, |
672 | NULL); | |
212380e3 AC |
673 | } |
674 | ||
675 | /* can_join() | |
676 | * | |
677 | * input - client to check, channel to check for, key | |
765d839d | 678 | * output - reason for not being able to join, else 0, channel name to forward to |
212380e3 | 679 | * side effects - |
a63f7af7 | 680 | * caveats - this function should only be called on a local user. |
212380e3 AC |
681 | */ |
682 | int | |
fe74401b | 683 | can_join(struct Client *source_p, struct Channel *chptr, const char *key, const char **forward) |
212380e3 | 684 | { |
330fc5c1 AC |
685 | rb_dlink_node *invite = NULL; |
686 | rb_dlink_node *ptr; | |
212380e3 AC |
687 | struct Ban *invex = NULL; |
688 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
689 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
690 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
691 | int use_althost = 0; | |
1ebf4db4 | 692 | int i = 0; |
212380e3 AC |
693 | hook_data_channel moduledata; |
694 | ||
695 | s_assert(source_p->localClient != NULL); | |
696 | ||
8bb19bd7 AC |
697 | moduledata.client = source_p; |
698 | moduledata.chptr = chptr; | |
699 | moduledata.approved = 0; | |
700 | ||
b2f0da88 AC |
701 | rb_sprintf(src_host, "%s!%s@%s", source_p->name, source_p->username, source_p->host); |
702 | rb_sprintf(src_iphost, "%s!%s@%s", source_p->name, source_p->username, source_p->sockhost); | |
212380e3 AC |
703 | if(source_p->localClient->mangledhost != NULL) |
704 | { | |
705 | /* if host mangling mode enabled, also check their real host */ | |
706 | if(!strcmp(source_p->host, source_p->localClient->mangledhost)) | |
707 | { | |
b2f0da88 | 708 | rb_sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->orighost); |
212380e3 AC |
709 | use_althost = 1; |
710 | } | |
711 | /* if host mangling mode not enabled and no other spoof, | |
712 | * also check the mangled form of their host */ | |
713 | else if (!IsDynSpoof(source_p)) | |
714 | { | |
b2f0da88 | 715 | rb_sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->localClient->mangledhost); |
212380e3 AC |
716 | use_althost = 1; |
717 | } | |
718 | } | |
719 | ||
765d839d | 720 | if((is_banned(chptr, source_p, NULL, src_host, src_iphost, forward)) == CHFL_BAN) |
8bb19bd7 AC |
721 | { |
722 | moduledata.approved = ERR_BANNEDFROMCHAN; | |
723 | goto finish_join_check; | |
724 | } | |
212380e3 | 725 | |
765d839d EM |
726 | if(*chptr->mode.key && (EmptyString(key) || irccmp(chptr->mode.key, key))) |
727 | { | |
728 | moduledata.approved = ERR_BADCHANNELKEY; | |
729 | goto finish_join_check; | |
730 | } | |
731 | ||
732 | /* All checks from this point on will forward... */ | |
733 | if(forward) | |
734 | *forward = chptr->mode.forward; | |
735 | ||
212380e3 AC |
736 | if(chptr->mode.mode & MODE_INVITEONLY) |
737 | { | |
5cefa1d6 | 738 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
212380e3 | 739 | { |
1ebf4db4 | 740 | if(invite->data == chptr) |
212380e3 AC |
741 | break; |
742 | } | |
1ebf4db4 | 743 | if(invite == NULL) |
212380e3 AC |
744 | { |
745 | if(!ConfigChannel.use_invex) | |
8bb19bd7 | 746 | moduledata.approved = ERR_INVITEONLYCHAN; |
5cefa1d6 | 747 | RB_DLINK_FOREACH(ptr, chptr->invexlist.head) |
212380e3 AC |
748 | { |
749 | invex = ptr->data; | |
750 | if(match(invex->banstr, src_host) | |
751 | || match(invex->banstr, src_iphost) | |
752 | || match_cidr(invex->banstr, src_iphost) | |
753 | || match_extban(invex->banstr, source_p, chptr, CHFL_INVEX) | |
754 | || (use_althost && match(invex->banstr, src_althost))) | |
755 | break; | |
756 | } | |
757 | if(ptr == NULL) | |
8bb19bd7 | 758 | moduledata.approved = ERR_INVITEONLYCHAN; |
212380e3 AC |
759 | } |
760 | } | |
761 | ||
212380e3 | 762 | if(chptr->mode.limit && |
330fc5c1 | 763 | rb_dlink_list_length(&chptr->members) >= (unsigned long) chptr->mode.limit) |
1ebf4db4 | 764 | i = ERR_CHANNELISFULL; |
212380e3 | 765 | if(chptr->mode.mode & MODE_REGONLY && EmptyString(source_p->user->suser)) |
1ebf4db4 | 766 | i = ERR_NEEDREGGEDNICK; |
212380e3 | 767 | /* join throttling stuff --nenolod */ |
1ebf4db4 | 768 | else if(chptr->mode.join_num > 0 && chptr->mode.join_time > 0) |
212380e3 | 769 | { |
e3354945 | 770 | if ((rb_current_time() - chptr->join_delta <= |
212380e3 AC |
771 | chptr->mode.join_time) && (chptr->join_count >= |
772 | chptr->mode.join_num)) | |
1ebf4db4 JT |
773 | i = ERR_THROTTLE; |
774 | } | |
775 | ||
776 | /* allow /invite to override +l/+r/+j also -- jilles */ | |
777 | if (i != 0 && invite == NULL) | |
778 | { | |
5cefa1d6 | 779 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
1ebf4db4 JT |
780 | { |
781 | if(invite->data == chptr) | |
782 | break; | |
783 | } | |
784 | if (invite == NULL) | |
8bb19bd7 | 785 | moduledata.approved = i; |
212380e3 AC |
786 | } |
787 | ||
8bb19bd7 | 788 | finish_join_check: |
212380e3 AC |
789 | call_hook(h_can_join, &moduledata); |
790 | ||
791 | return moduledata.approved; | |
792 | } | |
793 | ||
794 | /* can_send() | |
795 | * | |
796 | * input - user to check in channel, membership pointer | |
797 | * output - whether can explicitly send or not, else CAN_SEND_NONOP | |
798 | * side effects - | |
799 | */ | |
800 | int | |
801 | can_send(struct Channel *chptr, struct Client *source_p, struct membership *msptr) | |
802 | { | |
0aa36c5f AC |
803 | hook_data_channel_approval moduledata; |
804 | ||
805 | moduledata.approved = CAN_SEND_NONOP; | |
806 | ||
212380e3 AC |
807 | if(IsServer(source_p) || IsService(source_p)) |
808 | return CAN_SEND_OPV; | |
809 | ||
810 | if(MyClient(source_p) && hash_find_resv(chptr->chname) && | |
811 | !IsOper(source_p) && !IsExemptResv(source_p)) | |
0aa36c5f | 812 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
813 | |
814 | if(msptr == NULL) | |
815 | { | |
816 | msptr = find_channel_membership(chptr, source_p); | |
817 | ||
818 | if(msptr == NULL) | |
819 | { | |
820 | /* if its +m or +n and theyre not in the channel, | |
821 | * they cant send. we dont check bans here because | |
822 | * theres no possibility of caching them --fl | |
823 | */ | |
824 | if(chptr->mode.mode & MODE_NOPRIVMSGS || chptr->mode.mode & MODE_MODERATED) | |
0aa36c5f | 825 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 826 | else |
0aa36c5f | 827 | moduledata.approved = CAN_SEND_NONOP; |
b697041e AC |
828 | |
829 | return moduledata.approved; | |
212380e3 AC |
830 | } |
831 | } | |
832 | ||
212380e3 | 833 | if(chptr->mode.mode & MODE_MODERATED) |
0aa36c5f | 834 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
835 | |
836 | if(MyClient(source_p)) | |
837 | { | |
838 | /* cached can_send */ | |
839 | if(msptr->bants == chptr->bants) | |
840 | { | |
841 | if(can_send_banned(msptr)) | |
0aa36c5f | 842 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 843 | } |
765d839d | 844 | else if(is_banned(chptr, source_p, msptr, NULL, NULL, NULL) == CHFL_BAN |
212380e3 | 845 | || is_quieted(chptr, source_p, msptr, NULL, NULL) == CHFL_BAN) |
0aa36c5f | 846 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
847 | } |
848 | ||
e06988c6 AC |
849 | if(is_chanop_voiced(msptr)) |
850 | moduledata.approved = CAN_SEND_OPV; | |
851 | ||
f4b52a0a EM |
852 | moduledata.client = source_p; |
853 | moduledata.chptr = msptr->chptr; | |
854 | moduledata.msptr = msptr; | |
855 | moduledata.target = NULL; | |
856 | ||
0aa36c5f AC |
857 | call_hook(h_can_send, &moduledata); |
858 | ||
859 | return moduledata.approved; | |
212380e3 AC |
860 | } |
861 | ||
15484f02 BG |
862 | /* |
863 | * flood_attack_channel | |
864 | * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC | |
865 | * says NOTICE must not auto reply | |
866 | * - pointer to source Client | |
867 | * - pointer to target channel | |
868 | * output - 1 if target is under flood attack | |
869 | * side effects - check for flood attack on target chptr | |
870 | */ | |
871 | int | |
872 | flood_attack_channel(int p_or_n, struct Client *source_p, struct Channel *chptr, char *chname) | |
873 | { | |
874 | int delta; | |
875 | ||
876 | if(GlobalSetOptions.floodcount && MyClient(source_p)) | |
877 | { | |
878 | if((chptr->first_received_message_time + 1) < rb_current_time()) | |
879 | { | |
880 | delta = rb_current_time() - chptr->first_received_message_time; | |
881 | chptr->received_number_of_privmsgs -= delta; | |
882 | chptr->first_received_message_time = rb_current_time(); | |
883 | if(chptr->received_number_of_privmsgs <= 0) | |
884 | { | |
885 | chptr->received_number_of_privmsgs = 0; | |
886 | chptr->flood_noticed = 0; | |
887 | } | |
888 | } | |
889 | ||
890 | if((chptr->received_number_of_privmsgs >= GlobalSetOptions.floodcount) | |
891 | || chptr->flood_noticed) | |
892 | { | |
893 | if(chptr->flood_noticed == 0) | |
894 | { | |
895 | sendto_realops_snomask(SNO_BOTS, *chptr->chname == '&' ? L_ALL : L_NETWIDE, | |
896 | "Possible Flooder %s[%s@%s] on %s target: %s", | |
897 | source_p->name, source_p->username, | |
898 | source_p->orighost, | |
899 | source_p->servptr->name, chptr->chname); | |
900 | chptr->flood_noticed = 1; | |
901 | ||
902 | /* Add a bit of penalty */ | |
903 | chptr->received_number_of_privmsgs += 2; | |
904 | } | |
905 | if(MyClient(source_p) && (p_or_n != 1)) | |
906 | sendto_one(source_p, | |
907 | ":%s NOTICE %s :*** Message to %s throttled due to flooding", | |
908 | me.name, source_p->name, chptr->chname); | |
909 | return 1; | |
910 | } | |
911 | else | |
912 | chptr->received_number_of_privmsgs++; | |
913 | } | |
914 | ||
915 | return 0; | |
916 | } | |
917 | ||
212380e3 AC |
918 | /* find_bannickchange_channel() |
919 | * Input: client to check | |
920 | * Output: channel preventing nick change | |
921 | */ | |
922 | struct Channel * | |
923 | find_bannickchange_channel(struct Client *client_p) | |
924 | { | |
925 | struct Channel *chptr; | |
926 | struct membership *msptr; | |
330fc5c1 | 927 | rb_dlink_node *ptr; |
212380e3 AC |
928 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; |
929 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
930 | ||
931 | if (!MyClient(client_p)) | |
932 | return NULL; | |
933 | ||
b2f0da88 AC |
934 | rb_sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host); |
935 | rb_sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost); | |
212380e3 | 936 | |
5cefa1d6 | 937 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
938 | { |
939 | msptr = ptr->data; | |
940 | chptr = msptr->chptr; | |
941 | if (is_chanop_voiced(msptr)) | |
942 | continue; | |
943 | /* cached can_send */ | |
944 | if (msptr->bants == chptr->bants) | |
945 | { | |
946 | if (can_send_banned(msptr)) | |
947 | return chptr; | |
948 | } | |
765d839d | 949 | else if (is_banned(chptr, client_p, msptr, src_host, src_iphost, NULL) == CHFL_BAN |
212380e3 AC |
950 | || is_quieted(chptr, client_p, msptr, src_host, src_iphost) == CHFL_BAN) |
951 | return chptr; | |
952 | } | |
953 | return NULL; | |
954 | } | |
955 | ||
956 | /* void check_spambot_warning(struct Client *source_p) | |
957 | * Input: Client to check, channel name or NULL if this is a part. | |
958 | * Output: none | |
959 | * Side-effects: Updates the client's oper_warn_count_down, warns the | |
960 | * IRC operators if necessary, and updates join_leave_countdown as | |
961 | * needed. | |
962 | */ | |
963 | void | |
964 | check_spambot_warning(struct Client *source_p, const char *name) | |
965 | { | |
966 | int t_delta; | |
967 | int decrement_count; | |
968 | if((GlobalSetOptions.spam_num && | |
969 | (source_p->localClient->join_leave_count >= GlobalSetOptions.spam_num))) | |
970 | { | |
971 | if(source_p->localClient->oper_warn_count_down > 0) | |
972 | source_p->localClient->oper_warn_count_down--; | |
973 | else | |
974 | source_p->localClient->oper_warn_count_down = 0; | |
e0c1f4ec JT |
975 | if(source_p->localClient->oper_warn_count_down == 0 && |
976 | name != NULL) | |
212380e3 AC |
977 | { |
978 | /* Its already known as a possible spambot */ | |
e0c1f4ec JT |
979 | sendto_realops_snomask(SNO_BOTS, L_NETWIDE, |
980 | "User %s (%s@%s) trying to join %s is a possible spambot", | |
981 | source_p->name, | |
982 | source_p->username, source_p->orighost, name); | |
212380e3 AC |
983 | source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN; |
984 | } | |
985 | } | |
986 | else | |
987 | { | |
988 | if((t_delta = | |
e3354945 | 989 | (rb_current_time() - source_p->localClient->last_leave_time)) > |
212380e3 AC |
990 | JOIN_LEAVE_COUNT_EXPIRE_TIME) |
991 | { | |
992 | decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME); | |
981586df JT |
993 | if(name != NULL) |
994 | ; | |
995 | else if(decrement_count > source_p->localClient->join_leave_count) | |
212380e3 AC |
996 | source_p->localClient->join_leave_count = 0; |
997 | else | |
998 | source_p->localClient->join_leave_count -= decrement_count; | |
999 | } | |
1000 | else | |
1001 | { | |
e3354945 | 1002 | if((rb_current_time() - |
212380e3 AC |
1003 | (source_p->localClient->last_join_time)) < GlobalSetOptions.spam_time) |
1004 | { | |
1005 | /* oh, its a possible spambot */ | |
1006 | source_p->localClient->join_leave_count++; | |
1007 | } | |
1008 | } | |
1009 | if(name != NULL) | |
e3354945 | 1010 | source_p->localClient->last_join_time = rb_current_time(); |
212380e3 | 1011 | else |
e3354945 | 1012 | source_p->localClient->last_leave_time = rb_current_time(); |
212380e3 AC |
1013 | } |
1014 | } | |
1015 | ||
1016 | /* check_splitmode() | |
1017 | * | |
1018 | * input - | |
1019 | * output - | |
1020 | * side effects - compares usercount and servercount against their split | |
1021 | * values and adjusts splitmode accordingly | |
1022 | */ | |
1023 | void | |
1024 | check_splitmode(void *unused) | |
1025 | { | |
1026 | if(splitchecking && (ConfigChannel.no_join_on_split || ConfigChannel.no_create_on_split)) | |
1027 | { | |
1028 | /* not split, we're being asked to check now because someone | |
1029 | * has left | |
1030 | */ | |
1031 | if(!splitmode) | |
1032 | { | |
1033 | if(eob_count < split_servers || Count.total < split_users) | |
1034 | { | |
1035 | splitmode = 1; | |
1036 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1037 | "Network split, activating splitmode"); | |
c608a061 | 1038 | check_splitmode_ev = rb_event_addish("check_splitmode", check_splitmode, NULL, 2); |
212380e3 AC |
1039 | } |
1040 | } | |
1041 | /* in splitmode, check whether its finished */ | |
1042 | else if(eob_count >= split_servers && Count.total >= split_users) | |
1043 | { | |
1044 | splitmode = 0; | |
1045 | ||
1046 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1047 | "Network rejoined, deactivating splitmode"); | |
1048 | ||
c608a061 | 1049 | rb_event_delete(check_splitmode_ev); |
6a309903 | 1050 | check_splitmode_ev = NULL; |
212380e3 AC |
1051 | } |
1052 | } | |
1053 | } | |
1054 | ||
1055 | ||
1056 | /* allocate_topic() | |
1057 | * | |
1058 | * input - channel to allocate topic for | |
1059 | * output - 1 on success, else 0 | |
1060 | * side effects - channel gets a topic allocated | |
1061 | */ | |
1062 | static void | |
1063 | allocate_topic(struct Channel *chptr) | |
1064 | { | |
1065 | void *ptr; | |
1066 | ||
1067 | if(chptr == NULL) | |
1068 | return; | |
1069 | ||
398b6a73 | 1070 | ptr = rb_bh_alloc(topic_heap); |
212380e3 AC |
1071 | |
1072 | /* Basically we allocate one large block for the topic and | |
1073 | * the topic info. We then split it up into two and shove it | |
1074 | * in the chptr | |
1075 | */ | |
1076 | chptr->topic = ptr; | |
1077 | chptr->topic_info = (char *) ptr + TOPICLEN + 1; | |
1078 | *chptr->topic = '\0'; | |
1079 | *chptr->topic_info = '\0'; | |
1080 | } | |
1081 | ||
1082 | /* free_topic() | |
1083 | * | |
1084 | * input - channel which has topic to free | |
1085 | * output - | |
1086 | * side effects - channels topic is free'd | |
1087 | */ | |
1088 | static void | |
1089 | free_topic(struct Channel *chptr) | |
1090 | { | |
1091 | void *ptr; | |
1092 | ||
1093 | if(chptr == NULL || chptr->topic == NULL) | |
1094 | return; | |
1095 | ||
1096 | /* This is safe for now - If you change allocate_topic you | |
1097 | * MUST change this as well | |
1098 | */ | |
1099 | ptr = chptr->topic; | |
398b6a73 | 1100 | rb_bh_free(topic_heap, ptr); |
212380e3 AC |
1101 | chptr->topic = NULL; |
1102 | chptr->topic_info = NULL; | |
1103 | } | |
1104 | ||
1105 | /* set_channel_topic() | |
1106 | * | |
1107 | * input - channel, topic to set, topic info and topic ts | |
1108 | * output - | |
1109 | * side effects - channels topic, topic info and TS are set. | |
1110 | */ | |
1111 | void | |
1112 | set_channel_topic(struct Channel *chptr, const char *topic, const char *topic_info, time_t topicts) | |
1113 | { | |
1114 | if(strlen(topic) > 0) | |
1115 | { | |
1116 | if(chptr->topic == NULL) | |
1117 | allocate_topic(chptr); | |
f427c8b0 VY |
1118 | rb_strlcpy(chptr->topic, topic, TOPICLEN + 1); |
1119 | rb_strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN); | |
212380e3 AC |
1120 | chptr->topic_time = topicts; |
1121 | } | |
1122 | else | |
1123 | { | |
1124 | if(chptr->topic != NULL) | |
1125 | free_topic(chptr); | |
1126 | chptr->topic_time = 0; | |
1127 | } | |
1128 | } | |
1129 | ||
3b8a6350 | 1130 | /* channel_modes() |
212380e3 AC |
1131 | * |
1132 | * inputs - pointer to channel | |
1133 | * - pointer to client | |
f1e35c19 JT |
1134 | * output - string with simple modes |
1135 | * side effects - result from previous calls overwritten | |
212380e3 AC |
1136 | * |
1137 | * Stolen from ShadowIRCd 4 --nenolod | |
1138 | */ | |
1139 | const char * | |
3b8a6350 | 1140 | channel_modes(struct Channel *chptr, struct Client *client_p) |
212380e3 AC |
1141 | { |
1142 | int i; | |
1143 | char buf1[BUFSIZE]; | |
1144 | char buf2[BUFSIZE]; | |
1145 | static char final[BUFSIZE]; | |
1146 | char *mbuf = buf1; | |
1147 | char *pbuf = buf2; | |
1148 | ||
1149 | *mbuf++ = '+'; | |
1150 | *pbuf = '\0'; | |
1151 | ||
efccc22c | 1152 | for (i = 0; i < 256; i++) |
3b8a6350 | 1153 | if(chptr->mode.mode & chmode_flags[i]) |
efccc22c | 1154 | *mbuf++ = i; |
212380e3 | 1155 | |
3b8a6350 | 1156 | if(chptr->mode.limit) |
212380e3 AC |
1157 | { |
1158 | *mbuf++ = 'l'; | |
1159 | ||
f1e35c19 | 1160 | if(!IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1161 | pbuf += rb_sprintf(pbuf, " %d", chptr->mode.limit); |
212380e3 AC |
1162 | } |
1163 | ||
3b8a6350 | 1164 | if(*chptr->mode.key) |
212380e3 AC |
1165 | { |
1166 | *mbuf++ = 'k'; | |
1167 | ||
f1e35c19 | 1168 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1169 | pbuf += rb_sprintf(pbuf, " %s", chptr->mode.key); |
212380e3 AC |
1170 | } |
1171 | ||
3b8a6350 | 1172 | if(chptr->mode.join_num) |
212380e3 AC |
1173 | { |
1174 | *mbuf++ = 'j'; | |
1175 | ||
f1e35c19 | 1176 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 SB |
1177 | pbuf += rb_sprintf(pbuf, " %d:%d", chptr->mode.join_num, |
1178 | chptr->mode.join_time); | |
212380e3 AC |
1179 | } |
1180 | ||
2da6f6eb JT |
1181 | if(*chptr->mode.forward && |
1182 | (ConfigChannel.use_forward || !IsClient(client_p))) | |
212380e3 AC |
1183 | { |
1184 | *mbuf++ = 'f'; | |
1185 | ||
f1e35c19 | 1186 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1187 | pbuf += rb_sprintf(pbuf, " %s", chptr->mode.forward); |
212380e3 AC |
1188 | } |
1189 | ||
1190 | *mbuf = '\0'; | |
1191 | ||
f427c8b0 | 1192 | rb_strlcpy(final, buf1, sizeof final); |
1f9de103 | 1193 | rb_strlcat(final, buf2, sizeof final); |
212380e3 AC |
1194 | return final; |
1195 | } | |
1196 | ||
212380e3 AC |
1197 | /* void send_cap_mode_changes(struct Client *client_p, |
1198 | * struct Client *source_p, | |
1199 | * struct Channel *chptr, int cap, int nocap) | |
1200 | * Input: The client sending(client_p), the source client(source_p), | |
1201 | * the channel to send mode changes for(chptr) | |
1202 | * Output: None. | |
1203 | * Side-effects: Sends the appropriate mode changes to capable servers. | |
1204 | * | |
1205 | * Reverted back to my original design, except that we now keep a count | |
1206 | * of the number of servers which each combination as an optimisation, so | |
1207 | * the capabs combinations which are not needed are not worked out. -A1kmm | |
346fba92 AC |
1208 | * |
1209 | * Removed most code here because we don't need to be compatible with ircd | |
1210 | * 2.8.21+CSr and stuff. --nenolod | |
212380e3 AC |
1211 | */ |
1212 | void | |
1213 | send_cap_mode_changes(struct Client *client_p, struct Client *source_p, | |
1214 | struct Channel *chptr, struct ChModeChange mode_changes[], int mode_count) | |
1215 | { | |
1216 | static char modebuf[BUFSIZE]; | |
1217 | static char parabuf[BUFSIZE]; | |
1218 | int i, mbl, pbl, nc, mc, preflen, len; | |
1219 | char *pbuf; | |
1220 | const char *arg; | |
212380e3 AC |
1221 | int cap; |
1222 | int nocap; | |
346fba92 | 1223 | int dir; |
212380e3 AC |
1224 | int arglen; |
1225 | ||
1226 | /* Now send to servers... */ | |
346fba92 AC |
1227 | mc = 0; |
1228 | nc = 0; | |
1229 | pbl = 0; | |
1230 | parabuf[0] = 0; | |
1231 | pbuf = parabuf; | |
1232 | dir = MODE_QUERY; | |
1233 | ||
1234 | mbl = preflen = rb_sprintf(modebuf, ":%s TMODE %ld %s ", | |
1235 | use_id(source_p), (long) chptr->channelts, | |
1236 | chptr->chname); | |
1237 | ||
1238 | /* loop the list of - modes we have */ | |
1239 | for (i = 0; i < mode_count; i++) | |
212380e3 | 1240 | { |
346fba92 AC |
1241 | /* if they dont support the cap we need, or they do support a cap they |
1242 | * cant have, then dont add it to the modebuf.. that way they wont see | |
1243 | * the mode | |
1244 | */ | |
1245 | if (mode_changes[i].letter == 0) | |
212380e3 AC |
1246 | continue; |
1247 | ||
346fba92 AC |
1248 | cap = mode_changes[i].caps; |
1249 | nocap = mode_changes[i].nocaps; | |
212380e3 | 1250 | |
346fba92 AC |
1251 | if (!EmptyString(mode_changes[i].id)) |
1252 | arg = mode_changes[i].id; | |
1253 | else | |
1254 | arg = mode_changes[i].arg; | |
212380e3 | 1255 | |
346fba92 | 1256 | if(arg) |
212380e3 | 1257 | { |
346fba92 | 1258 | arglen = strlen(arg); |
212380e3 | 1259 | |
346fba92 AC |
1260 | /* dont even think about it! --fl */ |
1261 | if(arglen > MODEBUFLEN - 5) | |
1262 | continue; | |
1263 | } | |
212380e3 | 1264 | |
346fba92 AC |
1265 | /* if we're creeping past the buf size, we need to send it and make |
1266 | * another line for the other modes | |
1267 | * XXX - this could give away server topology with uids being | |
1268 | * different lengths, but not much we can do, except possibly break | |
1269 | * them as if they were the longest of the nick or uid at all times, | |
1270 | * which even then won't work as we don't always know the uid -A1kmm. | |
1271 | */ | |
1272 | if(arg && ((mc == MAXMODEPARAMSSERV) || | |
1273 | ((mbl + pbl + arglen + 4) > (BUFSIZE - 3)))) | |
1274 | { | |
1275 | if(nc != 0) | |
1276 | sendto_server(client_p, chptr, cap, nocap, | |
1277 | "%s %s", modebuf, parabuf); | |
1278 | nc = 0; | |
1279 | mc = 0; | |
1280 | ||
1281 | mbl = preflen; | |
1282 | pbl = 0; | |
1283 | pbuf = parabuf; | |
1284 | parabuf[0] = 0; | |
1285 | dir = MODE_QUERY; | |
1286 | } | |
212380e3 | 1287 | |
346fba92 AC |
1288 | if(dir != mode_changes[i].dir) |
1289 | { | |
1290 | modebuf[mbl++] = (mode_changes[i].dir == MODE_ADD) ? '+' : '-'; | |
1291 | dir = mode_changes[i].dir; | |
1292 | } | |
212380e3 | 1293 | |
346fba92 AC |
1294 | modebuf[mbl++] = mode_changes[i].letter; |
1295 | modebuf[mbl] = 0; | |
1296 | nc++; | |
212380e3 | 1297 | |
346fba92 AC |
1298 | if(arg != NULL) |
1299 | { | |
1300 | len = rb_sprintf(pbuf, "%s ", arg); | |
1301 | pbuf += len; | |
1302 | pbl += len; | |
1303 | mc++; | |
212380e3 | 1304 | } |
346fba92 | 1305 | } |
212380e3 | 1306 | |
346fba92 AC |
1307 | if(pbl && parabuf[pbl - 1] == ' ') |
1308 | parabuf[pbl - 1] = 0; | |
212380e3 | 1309 | |
346fba92 AC |
1310 | if(nc != 0) |
1311 | sendto_server(client_p, chptr, cap, nocap, "%s %s", modebuf, parabuf); | |
212380e3 | 1312 | } |
dca9e552 | 1313 | |
346fba92 | 1314 | void |
dca9e552 JT |
1315 | resv_chan_forcepart(const char *name, const char *reason, int temp_time) |
1316 | { | |
1317 | rb_dlink_node *ptr; | |
1318 | rb_dlink_node *next_ptr; | |
1319 | struct Channel *chptr; | |
1320 | struct membership *msptr; | |
1321 | struct Client *target_p; | |
1322 | ||
1323 | if(!ConfigChannel.resv_forcepart) | |
1324 | return; | |
1325 | ||
1326 | /* for each user on our server in the channel list | |
1327 | * send them a PART, and notify opers. | |
1328 | */ | |
1329 | chptr = find_channel(name); | |
1330 | if(chptr != NULL) | |
1331 | { | |
1332 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head) | |
1333 | { | |
1334 | msptr = ptr->data; | |
1335 | target_p = msptr->client_p; | |
1336 | ||
1337 | if(IsExemptResv(target_p)) | |
1338 | continue; | |
1339 | ||
1340 | sendto_server(target_p, chptr, CAP_TS6, NOCAPS, | |
1341 | ":%s PART %s", target_p->id, chptr->chname); | |
1342 | ||
1343 | sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s", | |
1344 | target_p->name, target_p->username, | |
1345 | target_p->host, chptr->chname, target_p->name); | |
1346 | ||
1347 | remove_user_from_channel(msptr); | |
1348 | ||
1349 | /* notify opers & user they were removed from the channel */ | |
1350 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1351 | "Forced PART for %s!%s@%s from %s (%s)", | |
1352 | target_p->name, target_p->username, | |
1353 | target_p->host, name, reason); | |
1354 | ||
1355 | if(temp_time > 0) | |
1356 | sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.", | |
1357 | name); | |
1358 | else | |
1359 | sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.", | |
1360 | name); | |
1361 | } | |
1362 | } | |
1363 | } |