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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * channel.c: Controls channels. | |
4 | * | |
55abcbb2 KB |
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 | |
212380e3 AC |
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" |
77d3d2db | 45 | #include "s_assert.h" |
212380e3 | 46 | |
18e4d421 | 47 | struct config_channel_entry ConfigChannel; |
c3d10343 | 48 | rb_dlink_list global_channel_list; |
b617afdc VY |
49 | static rb_bh *channel_heap; |
50 | static rb_bh *ban_heap; | |
51 | static rb_bh *topic_heap; | |
52 | static rb_bh *member_heap; | |
53 | ||
212380e3 AC |
54 | static void free_topic(struct Channel *chptr); |
55 | ||
56 | static int h_can_join; | |
0aa36c5f | 57 | static int h_can_send; |
749d8c11 | 58 | int h_get_channel_access; |
212380e3 AC |
59 | |
60 | /* init_channels() | |
61 | * | |
62 | * input - | |
63 | * output - | |
64 | * side effects - initialises the various blockheaps | |
65 | */ | |
66 | void | |
67 | init_channels(void) | |
68 | { | |
c608a061 AC |
69 | channel_heap = rb_bh_create(sizeof(struct Channel), CHANNEL_HEAP_SIZE, "channel_heap"); |
70 | ban_heap = rb_bh_create(sizeof(struct Ban), BAN_HEAP_SIZE, "ban_heap"); | |
71 | topic_heap = rb_bh_create(TOPICLEN + 1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE, "topic_heap"); | |
72 | member_heap = rb_bh_create(sizeof(struct membership), MEMBER_HEAP_SIZE, "member_heap"); | |
212380e3 AC |
73 | |
74 | h_can_join = register_hook("can_join"); | |
0aa36c5f | 75 | h_can_send = register_hook("can_send"); |
749d8c11 | 76 | h_get_channel_access = register_hook("get_channel_access"); |
212380e3 AC |
77 | } |
78 | ||
79 | /* | |
80 | * allocate_channel - Allocates a channel | |
81 | */ | |
82 | struct Channel * | |
83 | allocate_channel(const char *chname) | |
84 | { | |
85 | struct Channel *chptr; | |
398b6a73 | 86 | chptr = rb_bh_alloc(channel_heap); |
47a03750 | 87 | chptr->chname = rb_strdup(chname); |
212380e3 AC |
88 | return (chptr); |
89 | } | |
90 | ||
91 | void | |
92 | free_channel(struct Channel *chptr) | |
93 | { | |
637c4932 | 94 | rb_free(chptr->chname); |
78e6b731 | 95 | rb_free(chptr->mode_lock); |
398b6a73 | 96 | rb_bh_free(channel_heap, chptr); |
212380e3 AC |
97 | } |
98 | ||
99 | struct Ban * | |
765d839d | 100 | allocate_ban(const char *banstr, const char *who, const char *forward) |
212380e3 AC |
101 | { |
102 | struct Ban *bptr; | |
398b6a73 | 103 | bptr = rb_bh_alloc(ban_heap); |
47a03750 VY |
104 | bptr->banstr = rb_strdup(banstr); |
105 | bptr->who = rb_strdup(who); | |
765d839d | 106 | bptr->forward = forward ? rb_strdup(forward) : NULL; |
212380e3 AC |
107 | |
108 | return (bptr); | |
109 | } | |
110 | ||
111 | void | |
112 | free_ban(struct Ban *bptr) | |
113 | { | |
637c4932 VY |
114 | rb_free(bptr->banstr); |
115 | rb_free(bptr->who); | |
765d839d | 116 | rb_free(bptr->forward); |
398b6a73 | 117 | rb_bh_free(ban_heap, bptr); |
212380e3 AC |
118 | } |
119 | ||
27912fd4 AC |
120 | /* |
121 | * send_channel_join() | |
122 | * | |
123 | * input - channel to join, client joining. | |
124 | * output - none | |
125 | * side effects - none | |
126 | */ | |
127 | void | |
128 | send_channel_join(struct Channel *chptr, struct Client *client_p) | |
129 | { | |
130 | if (!IsClient(client_p)) | |
131 | return; | |
132 | ||
92052a5c AC |
133 | sendto_channel_local_with_capability(ALL_MEMBERS, NOCAPS, CLICAP_EXTENDED_JOIN, chptr, ":%s!%s@%s JOIN %s", |
134 | client_p->name, client_p->username, client_p->host, chptr->chname); | |
135 | ||
26e9dd93 | 136 | sendto_channel_local_with_capability(ALL_MEMBERS, CLICAP_EXTENDED_JOIN, NOCAPS, chptr, ":%s!%s@%s JOIN %s %s :%s", |
92052a5c AC |
137 | client_p->name, client_p->username, client_p->host, chptr->chname, |
138 | EmptyString(client_p->user->suser) ? "*" : client_p->user->suser, | |
26e9dd93 | 139 | client_p->info); |
c5bbc603 KB |
140 | |
141 | /* Send away message to away-notify enabled clients. */ | |
142 | if (client_p->user->away) | |
143 | sendto_channel_local_with_capability_butone(client_p, ALL_MEMBERS, CLICAP_AWAY_NOTIFY, NOCAPS, chptr, | |
144 | ":%s!%s@%s AWAY :%s", client_p->name, client_p->username, | |
145 | client_p->host, client_p->user->away); | |
27912fd4 | 146 | } |
212380e3 AC |
147 | |
148 | /* find_channel_membership() | |
149 | * | |
150 | * input - channel to find them in, client to find | |
151 | * output - membership of client in channel, else NULL | |
152 | * side effects - | |
153 | */ | |
154 | struct membership * | |
155 | find_channel_membership(struct Channel *chptr, struct Client *client_p) | |
156 | { | |
157 | struct membership *msptr; | |
330fc5c1 | 158 | rb_dlink_node *ptr; |
212380e3 AC |
159 | |
160 | if(!IsClient(client_p)) | |
161 | return NULL; | |
162 | ||
163 | /* Pick the most efficient list to use to be nice to things like | |
164 | * CHANSERV which could be in a large number of channels | |
165 | */ | |
330fc5c1 | 166 | if(rb_dlink_list_length(&chptr->members) < rb_dlink_list_length(&client_p->user->channel)) |
212380e3 | 167 | { |
5cefa1d6 | 168 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
169 | { |
170 | msptr = ptr->data; | |
171 | ||
172 | if(msptr->client_p == client_p) | |
173 | return msptr; | |
174 | } | |
175 | } | |
176 | else | |
177 | { | |
5cefa1d6 | 178 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
179 | { |
180 | msptr = ptr->data; | |
181 | ||
182 | if(msptr->chptr == chptr) | |
183 | return msptr; | |
184 | } | |
185 | } | |
186 | ||
187 | return NULL; | |
188 | } | |
189 | ||
190 | /* find_channel_status() | |
191 | * | |
192 | * input - membership to get status for, whether we can combine flags | |
193 | * output - flags of user on channel | |
194 | * side effects - | |
195 | */ | |
196 | const char * | |
197 | find_channel_status(struct membership *msptr, int combine) | |
198 | { | |
199 | static char buffer[3]; | |
200 | char *p; | |
201 | ||
202 | p = buffer; | |
203 | ||
204 | if(is_chanop(msptr)) | |
205 | { | |
206 | if(!combine) | |
207 | return "@"; | |
208 | *p++ = '@'; | |
209 | } | |
210 | ||
211 | if(is_voiced(msptr)) | |
212 | *p++ = '+'; | |
213 | ||
214 | *p = '\0'; | |
215 | return buffer; | |
216 | } | |
217 | ||
218 | /* add_user_to_channel() | |
219 | * | |
220 | * input - channel to add client to, client to add, channel flags | |
55abcbb2 | 221 | * output - |
212380e3 AC |
222 | * side effects - user is added to channel |
223 | */ | |
224 | void | |
225 | add_user_to_channel(struct Channel *chptr, struct Client *client_p, int flags) | |
226 | { | |
227 | struct membership *msptr; | |
228 | ||
229 | s_assert(client_p->user != NULL); | |
230 | if(client_p->user == NULL) | |
231 | return; | |
232 | ||
398b6a73 | 233 | msptr = rb_bh_alloc(member_heap); |
212380e3 AC |
234 | |
235 | msptr->chptr = chptr; | |
236 | msptr->client_p = client_p; | |
237 | msptr->flags = flags; | |
238 | ||
330fc5c1 AC |
239 | rb_dlinkAdd(msptr, &msptr->usernode, &client_p->user->channel); |
240 | rb_dlinkAdd(msptr, &msptr->channode, &chptr->members); | |
212380e3 AC |
241 | |
242 | if(MyClient(client_p)) | |
330fc5c1 | 243 | rb_dlinkAdd(msptr, &msptr->locchannode, &chptr->locmembers); |
212380e3 AC |
244 | } |
245 | ||
246 | /* remove_user_from_channel() | |
247 | * | |
248 | * input - membership pointer to remove from channel | |
249 | * output - | |
250 | * side effects - membership (thus user) is removed from channel | |
251 | */ | |
252 | void | |
253 | remove_user_from_channel(struct membership *msptr) | |
254 | { | |
255 | struct Client *client_p; | |
256 | struct Channel *chptr; | |
257 | s_assert(msptr != NULL); | |
258 | if(msptr == NULL) | |
259 | return; | |
260 | ||
261 | client_p = msptr->client_p; | |
262 | chptr = msptr->chptr; | |
263 | ||
330fc5c1 AC |
264 | rb_dlinkDelete(&msptr->usernode, &client_p->user->channel); |
265 | rb_dlinkDelete(&msptr->channode, &chptr->members); | |
212380e3 AC |
266 | |
267 | if(client_p->servptr == &me) | |
330fc5c1 | 268 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 269 | |
330fc5c1 | 270 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
271 | destroy_channel(chptr); |
272 | ||
398b6a73 | 273 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
274 | |
275 | return; | |
276 | } | |
277 | ||
278 | /* remove_user_from_channels() | |
279 | * | |
280 | * input - user to remove from all channels | |
281 | * output - | |
282 | * side effects - user is removed from all channels | |
283 | */ | |
284 | void | |
285 | remove_user_from_channels(struct Client *client_p) | |
286 | { | |
287 | struct Channel *chptr; | |
288 | struct membership *msptr; | |
330fc5c1 | 289 | rb_dlink_node *ptr; |
637c4932 | 290 | rb_dlink_node *next_ptr; |
212380e3 AC |
291 | |
292 | if(client_p == NULL) | |
293 | return; | |
294 | ||
637c4932 | 295 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->user->channel.head) |
212380e3 AC |
296 | { |
297 | msptr = ptr->data; | |
298 | chptr = msptr->chptr; | |
299 | ||
330fc5c1 | 300 | rb_dlinkDelete(&msptr->channode, &chptr->members); |
212380e3 AC |
301 | |
302 | if(client_p->servptr == &me) | |
330fc5c1 | 303 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 304 | |
330fc5c1 | 305 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
306 | destroy_channel(chptr); |
307 | ||
398b6a73 | 308 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
309 | } |
310 | ||
311 | client_p->user->channel.head = client_p->user->channel.tail = NULL; | |
312 | client_p->user->channel.length = 0; | |
313 | } | |
314 | ||
315 | /* invalidate_bancache_user() | |
316 | * | |
317 | * input - user to invalidate ban cache for | |
318 | * output - | |
319 | * side effects - ban cache is invalidated for all memberships of that user | |
320 | * to be used after a nick change | |
321 | */ | |
322 | void | |
323 | invalidate_bancache_user(struct Client *client_p) | |
324 | { | |
325 | struct membership *msptr; | |
330fc5c1 | 326 | rb_dlink_node *ptr; |
212380e3 AC |
327 | |
328 | if(client_p == NULL) | |
329 | return; | |
330 | ||
5cefa1d6 | 331 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
332 | { |
333 | msptr = ptr->data; | |
334 | msptr->bants = 0; | |
335 | msptr->flags &= ~CHFL_BANNED; | |
336 | } | |
337 | } | |
338 | ||
339 | /* check_channel_name() | |
340 | * | |
341 | * input - channel name | |
342 | * output - 1 if valid channel name, else 0 | |
343 | * side effects - | |
344 | */ | |
345 | int | |
346 | check_channel_name(const char *name) | |
347 | { | |
348 | s_assert(name != NULL); | |
349 | if(name == NULL) | |
350 | return 0; | |
351 | ||
352 | for (; *name; ++name) | |
353 | { | |
354 | if(!IsChanChar(*name)) | |
355 | return 0; | |
356 | } | |
357 | ||
358 | return 1; | |
359 | } | |
360 | ||
361 | /* free_channel_list() | |
362 | * | |
330fc5c1 | 363 | * input - rb_dlink list to free |
212380e3 AC |
364 | * output - |
365 | * side effects - list of b/e/I modes is cleared | |
366 | */ | |
367 | void | |
330fc5c1 | 368 | free_channel_list(rb_dlink_list * list) |
212380e3 | 369 | { |
330fc5c1 | 370 | rb_dlink_node *ptr; |
637c4932 | 371 | rb_dlink_node *next_ptr; |
212380e3 AC |
372 | struct Ban *actualBan; |
373 | ||
637c4932 | 374 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
375 | { |
376 | actualBan = ptr->data; | |
377 | free_ban(actualBan); | |
378 | } | |
379 | ||
380 | list->head = list->tail = NULL; | |
381 | list->length = 0; | |
382 | } | |
383 | ||
384 | /* destroy_channel() | |
385 | * | |
386 | * input - channel to destroy | |
387 | * output - | |
388 | * side effects - channel is obliterated | |
389 | */ | |
390 | void | |
391 | destroy_channel(struct Channel *chptr) | |
392 | { | |
637c4932 | 393 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 394 | |
637c4932 | 395 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) |
212380e3 AC |
396 | { |
397 | del_invite(chptr, ptr->data); | |
398 | } | |
399 | ||
400 | /* free all bans/exceptions/denies */ | |
401 | free_channel_list(&chptr->banlist); | |
402 | free_channel_list(&chptr->exceptlist); | |
403 | free_channel_list(&chptr->invexlist); | |
fea1ad52 | 404 | free_channel_list(&chptr->quietlist); |
212380e3 AC |
405 | |
406 | /* Free the topic */ | |
407 | free_topic(chptr); | |
408 | ||
330fc5c1 | 409 | rb_dlinkDelete(&chptr->node, &global_channel_list); |
212380e3 AC |
410 | del_from_channel_hash(chptr->chname, chptr); |
411 | free_channel(chptr); | |
412 | } | |
413 | ||
414 | /* channel_pub_or_secret() | |
415 | * | |
416 | * input - channel | |
417 | * output - "=" if public, "@" if secret, else "*" | |
418 | * side effects - | |
419 | */ | |
420 | static const char * | |
421 | channel_pub_or_secret(struct Channel *chptr) | |
422 | { | |
423 | if(PubChannel(chptr)) | |
424 | return ("="); | |
425 | else if(SecretChannel(chptr)) | |
426 | return ("@"); | |
427 | return ("*"); | |
428 | } | |
429 | ||
430 | /* channel_member_names() | |
431 | * | |
432 | * input - channel to list, client to list to, show endofnames | |
433 | * output - | |
434 | * side effects - client is given list of users on channel | |
435 | */ | |
436 | void | |
437 | channel_member_names(struct Channel *chptr, struct Client *client_p, int show_eon) | |
438 | { | |
439 | struct membership *msptr; | |
440 | struct Client *target_p; | |
330fc5c1 | 441 | rb_dlink_node *ptr; |
212380e3 AC |
442 | char lbuf[BUFSIZE]; |
443 | char *t; | |
444 | int mlen; | |
445 | int tlen; | |
446 | int cur_len; | |
447 | int is_member; | |
448 | int stack = IsCapable(client_p, CLICAP_MULTI_PREFIX); | |
449 | ||
450 | if(ShowChannel(client_p, chptr)) | |
451 | { | |
452 | is_member = IsMember(client_p, chptr); | |
453 | ||
b2f0da88 | 454 | cur_len = mlen = rb_sprintf(lbuf, form_str(RPL_NAMREPLY), |
212380e3 AC |
455 | me.name, client_p->name, |
456 | channel_pub_or_secret(chptr), chptr->chname); | |
457 | ||
458 | t = lbuf + cur_len; | |
459 | ||
5cefa1d6 | 460 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
461 | { |
462 | msptr = ptr->data; | |
463 | target_p = msptr->client_p; | |
464 | ||
465 | if(IsInvisible(target_p) && !is_member) | |
466 | continue; | |
467 | ||
1b54aa5c | 468 | if (IsCapable(client_p, CLICAP_USERHOST_IN_NAMES)) |
212380e3 | 469 | { |
1b54aa5c MT |
470 | /* space, possible "@+" prefix */ |
471 | if (cur_len + strlen(target_p->name) + strlen(target_p->username) + strlen(target_p->host) + 5 >= BUFSIZE - 5) | |
472 | { | |
473 | *(t - 1) = '\0'; | |
474 | sendto_one(client_p, "%s", lbuf); | |
475 | cur_len = mlen; | |
476 | t = lbuf + mlen; | |
477 | } | |
478 | ||
479 | tlen = rb_sprintf(t, "%s%s!%s@%s ", find_channel_status(msptr, stack), | |
480 | target_p->name, target_p->username, target_p->host); | |
481 | } | |
482 | else | |
483 | { | |
484 | /* space, possible "@+" prefix */ | |
485 | if(cur_len + strlen(target_p->name) + 3 >= BUFSIZE - 3) | |
486 | { | |
487 | *(t - 1) = '\0'; | |
488 | sendto_one(client_p, "%s", lbuf); | |
489 | cur_len = mlen; | |
490 | t = lbuf + mlen; | |
491 | } | |
492 | ||
493 | tlen = rb_sprintf(t, "%s%s ", find_channel_status(msptr, stack), | |
494 | target_p->name); | |
212380e3 | 495 | } |
212380e3 AC |
496 | |
497 | cur_len += tlen; | |
498 | t += tlen; | |
499 | } | |
500 | ||
501 | /* The old behaviour here was to always output our buffer, | |
502 | * even if there are no clients we can show. This happens | |
503 | * when a client does "NAMES" with no parameters, and all | |
504 | * the clients on a -sp channel are +i. I dont see a good | |
505 | * reason for keeping that behaviour, as it just wastes | |
506 | * bandwidth. --anfl | |
507 | */ | |
508 | if(cur_len != mlen) | |
509 | { | |
510 | *(t - 1) = '\0'; | |
511 | sendto_one(client_p, "%s", lbuf); | |
512 | } | |
513 | } | |
514 | ||
515 | if(show_eon) | |
516 | sendto_one(client_p, form_str(RPL_ENDOFNAMES), | |
517 | me.name, client_p->name, chptr->chname); | |
518 | } | |
519 | ||
520 | /* del_invite() | |
521 | * | |
522 | * input - channel to remove invite from, client to remove | |
523 | * output - | |
524 | * side effects - user is removed from invite list, if exists | |
525 | */ | |
526 | void | |
527 | del_invite(struct Channel *chptr, struct Client *who) | |
528 | { | |
330fc5c1 AC |
529 | rb_dlinkFindDestroy(who, &chptr->invites); |
530 | rb_dlinkFindDestroy(chptr, &who->user->invited); | |
212380e3 AC |
531 | } |
532 | ||
a14de124 | 533 | /* is_banned_list() |
212380e3 | 534 | * |
a14de124 JT |
535 | * input - channel to check bans for, ban list (banlist or quietlist), |
536 | * user to check bans against, optional prebuilt buffers, | |
537 | * optional forward channel pointer | |
212380e3 AC |
538 | * output - 1 if banned, else 0 |
539 | * side effects - | |
540 | */ | |
a14de124 JT |
541 | static int |
542 | is_banned_list(struct Channel *chptr, rb_dlink_list *list, | |
543 | struct Client *who, struct membership *msptr, | |
544 | const char *s, const char *s2, const char **forward) | |
212380e3 AC |
545 | { |
546 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
547 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
548 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
1c60de97 | 549 | char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6]; |
212380e3 | 550 | char *s3 = NULL; |
1c60de97 JT |
551 | char *s4 = NULL; |
552 | struct sockaddr_in ip4; | |
330fc5c1 | 553 | rb_dlink_node *ptr; |
212380e3 AC |
554 | struct Ban *actualBan = NULL; |
555 | struct Ban *actualExcept = NULL; | |
556 | ||
557 | if(!MyClient(who)) | |
558 | return 0; | |
559 | ||
560 | /* if the buffers havent been built, do it here */ | |
561 | if(s == NULL) | |
562 | { | |
b2f0da88 AC |
563 | rb_sprintf(src_host, "%s!%s@%s", who->name, who->username, who->host); |
564 | rb_sprintf(src_iphost, "%s!%s@%s", who->name, who->username, who->sockhost); | |
212380e3 AC |
565 | |
566 | s = src_host; | |
567 | s2 = src_iphost; | |
568 | } | |
569 | if(who->localClient->mangledhost != NULL) | |
570 | { | |
571 | /* if host mangling mode enabled, also check their real host */ | |
572 | if(!strcmp(who->host, who->localClient->mangledhost)) | |
573 | { | |
b2f0da88 | 574 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->orighost); |
212380e3 AC |
575 | s3 = src_althost; |
576 | } | |
577 | /* if host mangling mode not enabled and no other spoof, | |
578 | * also check the mangled form of their host */ | |
579 | else if (!IsDynSpoof(who)) | |
580 | { | |
b2f0da88 | 581 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->localClient->mangledhost); |
212380e3 AC |
582 | s3 = src_althost; |
583 | } | |
584 | } | |
1c60de97 JT |
585 | #ifdef RB_IPV6 |
586 | if(who->localClient->ip.ss_family == AF_INET6 && | |
587 | ipv4_from_ipv6((const struct sockaddr_in6 *)&who->localClient->ip, &ip4)) | |
588 | { | |
589 | rb_sprintf(src_ip4host, "%s!%s@", who->name, who->username); | |
590 | s4 = src_ip4host + strlen(src_ip4host); | |
591 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
592 | s4, src_ip4host + sizeof src_ip4host - s4); | |
593 | s4 = src_ip4host; | |
594 | } | |
595 | #endif | |
212380e3 | 596 | |
a14de124 | 597 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
598 | { |
599 | actualBan = ptr->data; | |
600 | if(match(actualBan->banstr, s) || | |
601 | match(actualBan->banstr, s2) || | |
602 | match_cidr(actualBan->banstr, s2) || | |
603 | match_extban(actualBan->banstr, who, chptr, CHFL_BAN) || | |
1c60de97 JT |
604 | (s3 != NULL && match(actualBan->banstr, s3)) |
605 | #ifdef RB_IPV6 | |
606 | || | |
607 | (s4 != NULL && (match(actualBan->banstr, s4) || match_cidr(actualBan->banstr, s4))) | |
608 | #endif | |
609 | ) | |
212380e3 AC |
610 | break; |
611 | else | |
612 | actualBan = NULL; | |
613 | } | |
614 | ||
615 | if((actualBan != NULL) && ConfigChannel.use_except) | |
616 | { | |
5cefa1d6 | 617 | RB_DLINK_FOREACH(ptr, chptr->exceptlist.head) |
212380e3 AC |
618 | { |
619 | actualExcept = ptr->data; | |
620 | ||
621 | /* theyre exempted.. */ | |
622 | if(match(actualExcept->banstr, s) || | |
623 | match(actualExcept->banstr, s2) || | |
624 | match_cidr(actualExcept->banstr, s2) || | |
625 | match_extban(actualExcept->banstr, who, chptr, CHFL_EXCEPTION) || | |
626 | (s3 != NULL && match(actualExcept->banstr, s3))) | |
627 | { | |
628 | /* cache the fact theyre not banned */ | |
629 | if(msptr != NULL) | |
630 | { | |
631 | msptr->bants = chptr->bants; | |
632 | msptr->flags &= ~CHFL_BANNED; | |
633 | } | |
634 | ||
635 | return CHFL_EXCEPTION; | |
636 | } | |
637 | } | |
638 | } | |
639 | ||
640 | /* cache the banned/not banned status */ | |
641 | if(msptr != NULL) | |
642 | { | |
643 | msptr->bants = chptr->bants; | |
644 | ||
645 | if(actualBan != NULL) | |
646 | { | |
647 | msptr->flags |= CHFL_BANNED; | |
648 | return CHFL_BAN; | |
649 | } | |
650 | else | |
651 | { | |
652 | msptr->flags &= ~CHFL_BANNED; | |
653 | return 0; | |
654 | } | |
655 | } | |
656 | ||
765d839d EM |
657 | if (actualBan && actualBan->forward && forward) |
658 | *forward = actualBan->forward; | |
659 | ||
212380e3 AC |
660 | return ((actualBan ? CHFL_BAN : 0)); |
661 | } | |
662 | ||
a14de124 JT |
663 | /* is_banned() |
664 | * | |
665 | * input - channel to check bans for, user to check bans against | |
666 | * optional prebuilt buffers, optional forward channel pointer | |
667 | * output - 1 if banned, else 0 | |
668 | * side effects - | |
669 | */ | |
670 | int | |
671 | is_banned(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
672 | const char *s, const char *s2, const char **forward) | |
673 | { | |
674 | return is_banned_list(chptr, &chptr->banlist, who, msptr, s, s2, | |
675 | forward); | |
676 | } | |
677 | ||
212380e3 AC |
678 | /* is_quieted() |
679 | * | |
680 | * input - channel to check bans for, user to check bans against | |
681 | * optional prebuilt buffers | |
682 | * output - 1 if banned, else 0 | |
683 | * side effects - | |
684 | */ | |
685 | int | |
686 | is_quieted(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
687 | const char *s, const char *s2) | |
688 | { | |
a14de124 JT |
689 | return is_banned_list(chptr, &chptr->quietlist, who, msptr, s, s2, |
690 | NULL); | |
212380e3 AC |
691 | } |
692 | ||
693 | /* can_join() | |
694 | * | |
695 | * input - client to check, channel to check for, key | |
765d839d | 696 | * output - reason for not being able to join, else 0, channel name to forward to |
212380e3 | 697 | * side effects - |
a63f7af7 | 698 | * caveats - this function should only be called on a local user. |
212380e3 AC |
699 | */ |
700 | int | |
fe74401b | 701 | can_join(struct Client *source_p, struct Channel *chptr, const char *key, const char **forward) |
212380e3 | 702 | { |
330fc5c1 AC |
703 | rb_dlink_node *invite = NULL; |
704 | rb_dlink_node *ptr; | |
212380e3 AC |
705 | struct Ban *invex = NULL; |
706 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
707 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
708 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
709 | int use_althost = 0; | |
1ebf4db4 | 710 | int i = 0; |
212380e3 AC |
711 | hook_data_channel moduledata; |
712 | ||
713 | s_assert(source_p->localClient != NULL); | |
714 | ||
8bb19bd7 AC |
715 | moduledata.client = source_p; |
716 | moduledata.chptr = chptr; | |
717 | moduledata.approved = 0; | |
718 | ||
b2f0da88 AC |
719 | rb_sprintf(src_host, "%s!%s@%s", source_p->name, source_p->username, source_p->host); |
720 | rb_sprintf(src_iphost, "%s!%s@%s", source_p->name, source_p->username, source_p->sockhost); | |
212380e3 AC |
721 | if(source_p->localClient->mangledhost != NULL) |
722 | { | |
723 | /* if host mangling mode enabled, also check their real host */ | |
724 | if(!strcmp(source_p->host, source_p->localClient->mangledhost)) | |
725 | { | |
b2f0da88 | 726 | rb_sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->orighost); |
212380e3 AC |
727 | use_althost = 1; |
728 | } | |
729 | /* if host mangling mode not enabled and no other spoof, | |
730 | * also check the mangled form of their host */ | |
731 | else if (!IsDynSpoof(source_p)) | |
732 | { | |
b2f0da88 | 733 | rb_sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->localClient->mangledhost); |
212380e3 AC |
734 | use_althost = 1; |
735 | } | |
736 | } | |
737 | ||
765d839d | 738 | if((is_banned(chptr, source_p, NULL, src_host, src_iphost, forward)) == CHFL_BAN) |
8bb19bd7 AC |
739 | { |
740 | moduledata.approved = ERR_BANNEDFROMCHAN; | |
741 | goto finish_join_check; | |
742 | } | |
212380e3 | 743 | |
765d839d EM |
744 | if(*chptr->mode.key && (EmptyString(key) || irccmp(chptr->mode.key, key))) |
745 | { | |
746 | moduledata.approved = ERR_BADCHANNELKEY; | |
747 | goto finish_join_check; | |
748 | } | |
749 | ||
750 | /* All checks from this point on will forward... */ | |
751 | if(forward) | |
752 | *forward = chptr->mode.forward; | |
753 | ||
212380e3 AC |
754 | if(chptr->mode.mode & MODE_INVITEONLY) |
755 | { | |
5cefa1d6 | 756 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
212380e3 | 757 | { |
1ebf4db4 | 758 | if(invite->data == chptr) |
212380e3 AC |
759 | break; |
760 | } | |
1ebf4db4 | 761 | if(invite == NULL) |
212380e3 AC |
762 | { |
763 | if(!ConfigChannel.use_invex) | |
8bb19bd7 | 764 | moduledata.approved = ERR_INVITEONLYCHAN; |
5cefa1d6 | 765 | RB_DLINK_FOREACH(ptr, chptr->invexlist.head) |
212380e3 AC |
766 | { |
767 | invex = ptr->data; | |
768 | if(match(invex->banstr, src_host) | |
769 | || match(invex->banstr, src_iphost) | |
770 | || match_cidr(invex->banstr, src_iphost) | |
771 | || match_extban(invex->banstr, source_p, chptr, CHFL_INVEX) | |
772 | || (use_althost && match(invex->banstr, src_althost))) | |
773 | break; | |
774 | } | |
775 | if(ptr == NULL) | |
8bb19bd7 | 776 | moduledata.approved = ERR_INVITEONLYCHAN; |
212380e3 AC |
777 | } |
778 | } | |
779 | ||
212380e3 | 780 | if(chptr->mode.limit && |
330fc5c1 | 781 | rb_dlink_list_length(&chptr->members) >= (unsigned long) chptr->mode.limit) |
1ebf4db4 | 782 | i = ERR_CHANNELISFULL; |
212380e3 | 783 | if(chptr->mode.mode & MODE_REGONLY && EmptyString(source_p->user->suser)) |
1ebf4db4 | 784 | i = ERR_NEEDREGGEDNICK; |
212380e3 | 785 | /* join throttling stuff --nenolod */ |
1ebf4db4 | 786 | else if(chptr->mode.join_num > 0 && chptr->mode.join_time > 0) |
212380e3 | 787 | { |
55abcbb2 | 788 | if ((rb_current_time() - chptr->join_delta <= |
212380e3 AC |
789 | chptr->mode.join_time) && (chptr->join_count >= |
790 | chptr->mode.join_num)) | |
1ebf4db4 JT |
791 | i = ERR_THROTTLE; |
792 | } | |
793 | ||
794 | /* allow /invite to override +l/+r/+j also -- jilles */ | |
795 | if (i != 0 && invite == NULL) | |
796 | { | |
5cefa1d6 | 797 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
1ebf4db4 JT |
798 | { |
799 | if(invite->data == chptr) | |
800 | break; | |
801 | } | |
802 | if (invite == NULL) | |
8bb19bd7 | 803 | moduledata.approved = i; |
212380e3 AC |
804 | } |
805 | ||
8bb19bd7 | 806 | finish_join_check: |
212380e3 AC |
807 | call_hook(h_can_join, &moduledata); |
808 | ||
809 | return moduledata.approved; | |
810 | } | |
811 | ||
812 | /* can_send() | |
813 | * | |
814 | * input - user to check in channel, membership pointer | |
815 | * output - whether can explicitly send or not, else CAN_SEND_NONOP | |
816 | * side effects - | |
817 | */ | |
818 | int | |
819 | can_send(struct Channel *chptr, struct Client *source_p, struct membership *msptr) | |
820 | { | |
0aa36c5f AC |
821 | hook_data_channel_approval moduledata; |
822 | ||
823 | moduledata.approved = CAN_SEND_NONOP; | |
824 | ||
212380e3 AC |
825 | if(IsServer(source_p) || IsService(source_p)) |
826 | return CAN_SEND_OPV; | |
827 | ||
828 | if(MyClient(source_p) && hash_find_resv(chptr->chname) && | |
829 | !IsOper(source_p) && !IsExemptResv(source_p)) | |
0aa36c5f | 830 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
831 | |
832 | if(msptr == NULL) | |
833 | { | |
834 | msptr = find_channel_membership(chptr, source_p); | |
835 | ||
836 | if(msptr == NULL) | |
837 | { | |
838 | /* if its +m or +n and theyre not in the channel, | |
839 | * they cant send. we dont check bans here because | |
840 | * theres no possibility of caching them --fl | |
841 | */ | |
842 | if(chptr->mode.mode & MODE_NOPRIVMSGS || chptr->mode.mode & MODE_MODERATED) | |
0aa36c5f | 843 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 844 | else |
0aa36c5f | 845 | moduledata.approved = CAN_SEND_NONOP; |
b697041e AC |
846 | |
847 | return moduledata.approved; | |
212380e3 AC |
848 | } |
849 | } | |
850 | ||
212380e3 | 851 | if(chptr->mode.mode & MODE_MODERATED) |
0aa36c5f | 852 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
853 | |
854 | if(MyClient(source_p)) | |
855 | { | |
856 | /* cached can_send */ | |
857 | if(msptr->bants == chptr->bants) | |
858 | { | |
859 | if(can_send_banned(msptr)) | |
0aa36c5f | 860 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 861 | } |
765d839d | 862 | else if(is_banned(chptr, source_p, msptr, NULL, NULL, NULL) == CHFL_BAN |
212380e3 | 863 | || is_quieted(chptr, source_p, msptr, NULL, NULL) == CHFL_BAN) |
0aa36c5f | 864 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
865 | } |
866 | ||
e06988c6 AC |
867 | if(is_chanop_voiced(msptr)) |
868 | moduledata.approved = CAN_SEND_OPV; | |
869 | ||
f4b52a0a EM |
870 | moduledata.client = source_p; |
871 | moduledata.chptr = msptr->chptr; | |
872 | moduledata.msptr = msptr; | |
873 | moduledata.target = NULL; | |
874 | ||
0aa36c5f AC |
875 | call_hook(h_can_send, &moduledata); |
876 | ||
877 | return moduledata.approved; | |
212380e3 AC |
878 | } |
879 | ||
15484f02 BG |
880 | /* |
881 | * flood_attack_channel | |
882 | * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC | |
883 | * says NOTICE must not auto reply | |
55abcbb2 | 884 | * - pointer to source Client |
15484f02 BG |
885 | * - pointer to target channel |
886 | * output - 1 if target is under flood attack | |
887 | * side effects - check for flood attack on target chptr | |
888 | */ | |
889 | int | |
890 | flood_attack_channel(int p_or_n, struct Client *source_p, struct Channel *chptr, char *chname) | |
891 | { | |
892 | int delta; | |
893 | ||
894 | if(GlobalSetOptions.floodcount && MyClient(source_p)) | |
895 | { | |
896 | if((chptr->first_received_message_time + 1) < rb_current_time()) | |
897 | { | |
898 | delta = rb_current_time() - chptr->first_received_message_time; | |
899 | chptr->received_number_of_privmsgs -= delta; | |
900 | chptr->first_received_message_time = rb_current_time(); | |
901 | if(chptr->received_number_of_privmsgs <= 0) | |
902 | { | |
903 | chptr->received_number_of_privmsgs = 0; | |
904 | chptr->flood_noticed = 0; | |
905 | } | |
906 | } | |
907 | ||
908 | if((chptr->received_number_of_privmsgs >= GlobalSetOptions.floodcount) | |
909 | || chptr->flood_noticed) | |
910 | { | |
911 | if(chptr->flood_noticed == 0) | |
912 | { | |
913 | sendto_realops_snomask(SNO_BOTS, *chptr->chname == '&' ? L_ALL : L_NETWIDE, | |
914 | "Possible Flooder %s[%s@%s] on %s target: %s", | |
915 | source_p->name, source_p->username, | |
916 | source_p->orighost, | |
917 | source_p->servptr->name, chptr->chname); | |
918 | chptr->flood_noticed = 1; | |
919 | ||
920 | /* Add a bit of penalty */ | |
921 | chptr->received_number_of_privmsgs += 2; | |
922 | } | |
923 | if(MyClient(source_p) && (p_or_n != 1)) | |
924 | sendto_one(source_p, | |
925 | ":%s NOTICE %s :*** Message to %s throttled due to flooding", | |
926 | me.name, source_p->name, chptr->chname); | |
927 | return 1; | |
928 | } | |
929 | else | |
930 | chptr->received_number_of_privmsgs++; | |
931 | } | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
212380e3 AC |
936 | /* find_bannickchange_channel() |
937 | * Input: client to check | |
938 | * Output: channel preventing nick change | |
939 | */ | |
940 | struct Channel * | |
941 | find_bannickchange_channel(struct Client *client_p) | |
942 | { | |
943 | struct Channel *chptr; | |
944 | struct membership *msptr; | |
330fc5c1 | 945 | rb_dlink_node *ptr; |
212380e3 AC |
946 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; |
947 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
948 | ||
949 | if (!MyClient(client_p)) | |
950 | return NULL; | |
951 | ||
b2f0da88 AC |
952 | rb_sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host); |
953 | rb_sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost); | |
212380e3 | 954 | |
5cefa1d6 | 955 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
956 | { |
957 | msptr = ptr->data; | |
958 | chptr = msptr->chptr; | |
959 | if (is_chanop_voiced(msptr)) | |
960 | continue; | |
961 | /* cached can_send */ | |
962 | if (msptr->bants == chptr->bants) | |
963 | { | |
964 | if (can_send_banned(msptr)) | |
965 | return chptr; | |
966 | } | |
765d839d | 967 | else if (is_banned(chptr, client_p, msptr, src_host, src_iphost, NULL) == CHFL_BAN |
212380e3 AC |
968 | || is_quieted(chptr, client_p, msptr, src_host, src_iphost) == CHFL_BAN) |
969 | return chptr; | |
970 | } | |
971 | return NULL; | |
972 | } | |
973 | ||
974 | /* void check_spambot_warning(struct Client *source_p) | |
975 | * Input: Client to check, channel name or NULL if this is a part. | |
976 | * Output: none | |
977 | * Side-effects: Updates the client's oper_warn_count_down, warns the | |
978 | * IRC operators if necessary, and updates join_leave_countdown as | |
979 | * needed. | |
980 | */ | |
981 | void | |
982 | check_spambot_warning(struct Client *source_p, const char *name) | |
983 | { | |
984 | int t_delta; | |
985 | int decrement_count; | |
986 | if((GlobalSetOptions.spam_num && | |
987 | (source_p->localClient->join_leave_count >= GlobalSetOptions.spam_num))) | |
988 | { | |
989 | if(source_p->localClient->oper_warn_count_down > 0) | |
990 | source_p->localClient->oper_warn_count_down--; | |
991 | else | |
992 | source_p->localClient->oper_warn_count_down = 0; | |
e0c1f4ec JT |
993 | if(source_p->localClient->oper_warn_count_down == 0 && |
994 | name != NULL) | |
212380e3 AC |
995 | { |
996 | /* Its already known as a possible spambot */ | |
e0c1f4ec JT |
997 | sendto_realops_snomask(SNO_BOTS, L_NETWIDE, |
998 | "User %s (%s@%s) trying to join %s is a possible spambot", | |
999 | source_p->name, | |
1000 | source_p->username, source_p->orighost, name); | |
212380e3 AC |
1001 | source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN; |
1002 | } | |
1003 | } | |
1004 | else | |
1005 | { | |
1006 | if((t_delta = | |
e3354945 | 1007 | (rb_current_time() - source_p->localClient->last_leave_time)) > |
212380e3 AC |
1008 | JOIN_LEAVE_COUNT_EXPIRE_TIME) |
1009 | { | |
1010 | decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME); | |
981586df JT |
1011 | if(name != NULL) |
1012 | ; | |
1013 | else if(decrement_count > source_p->localClient->join_leave_count) | |
212380e3 AC |
1014 | source_p->localClient->join_leave_count = 0; |
1015 | else | |
1016 | source_p->localClient->join_leave_count -= decrement_count; | |
1017 | } | |
1018 | else | |
1019 | { | |
e3354945 | 1020 | if((rb_current_time() - |
212380e3 AC |
1021 | (source_p->localClient->last_join_time)) < GlobalSetOptions.spam_time) |
1022 | { | |
1023 | /* oh, its a possible spambot */ | |
1024 | source_p->localClient->join_leave_count++; | |
1025 | } | |
1026 | } | |
1027 | if(name != NULL) | |
e3354945 | 1028 | source_p->localClient->last_join_time = rb_current_time(); |
212380e3 | 1029 | else |
e3354945 | 1030 | source_p->localClient->last_leave_time = rb_current_time(); |
212380e3 AC |
1031 | } |
1032 | } | |
1033 | ||
1034 | /* check_splitmode() | |
1035 | * | |
1036 | * input - | |
1037 | * output - | |
1038 | * side effects - compares usercount and servercount against their split | |
1039 | * values and adjusts splitmode accordingly | |
1040 | */ | |
1041 | void | |
1042 | check_splitmode(void *unused) | |
1043 | { | |
1044 | if(splitchecking && (ConfigChannel.no_join_on_split || ConfigChannel.no_create_on_split)) | |
1045 | { | |
1046 | /* not split, we're being asked to check now because someone | |
1047 | * has left | |
1048 | */ | |
1049 | if(!splitmode) | |
1050 | { | |
1051 | if(eob_count < split_servers || Count.total < split_users) | |
1052 | { | |
1053 | splitmode = 1; | |
1054 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1055 | "Network split, activating splitmode"); | |
c608a061 | 1056 | check_splitmode_ev = rb_event_addish("check_splitmode", check_splitmode, NULL, 2); |
212380e3 AC |
1057 | } |
1058 | } | |
1059 | /* in splitmode, check whether its finished */ | |
1060 | else if(eob_count >= split_servers && Count.total >= split_users) | |
1061 | { | |
1062 | splitmode = 0; | |
1063 | ||
1064 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1065 | "Network rejoined, deactivating splitmode"); | |
1066 | ||
c608a061 | 1067 | rb_event_delete(check_splitmode_ev); |
6a309903 | 1068 | check_splitmode_ev = NULL; |
212380e3 AC |
1069 | } |
1070 | } | |
1071 | } | |
1072 | ||
1073 | ||
1074 | /* allocate_topic() | |
1075 | * | |
1076 | * input - channel to allocate topic for | |
1077 | * output - 1 on success, else 0 | |
1078 | * side effects - channel gets a topic allocated | |
1079 | */ | |
1080 | static void | |
1081 | allocate_topic(struct Channel *chptr) | |
1082 | { | |
1083 | void *ptr; | |
1084 | ||
1085 | if(chptr == NULL) | |
1086 | return; | |
1087 | ||
398b6a73 | 1088 | ptr = rb_bh_alloc(topic_heap); |
212380e3 AC |
1089 | |
1090 | /* Basically we allocate one large block for the topic and | |
1091 | * the topic info. We then split it up into two and shove it | |
55abcbb2 | 1092 | * in the chptr |
212380e3 AC |
1093 | */ |
1094 | chptr->topic = ptr; | |
1095 | chptr->topic_info = (char *) ptr + TOPICLEN + 1; | |
1096 | *chptr->topic = '\0'; | |
1097 | *chptr->topic_info = '\0'; | |
1098 | } | |
1099 | ||
1100 | /* free_topic() | |
1101 | * | |
1102 | * input - channel which has topic to free | |
1103 | * output - | |
1104 | * side effects - channels topic is free'd | |
1105 | */ | |
1106 | static void | |
1107 | free_topic(struct Channel *chptr) | |
1108 | { | |
1109 | void *ptr; | |
1110 | ||
1111 | if(chptr == NULL || chptr->topic == NULL) | |
1112 | return; | |
1113 | ||
1114 | /* This is safe for now - If you change allocate_topic you | |
1115 | * MUST change this as well | |
1116 | */ | |
1117 | ptr = chptr->topic; | |
398b6a73 | 1118 | rb_bh_free(topic_heap, ptr); |
212380e3 AC |
1119 | chptr->topic = NULL; |
1120 | chptr->topic_info = NULL; | |
1121 | } | |
1122 | ||
1123 | /* set_channel_topic() | |
1124 | * | |
1125 | * input - channel, topic to set, topic info and topic ts | |
1126 | * output - | |
1127 | * side effects - channels topic, topic info and TS are set. | |
1128 | */ | |
1129 | void | |
1130 | set_channel_topic(struct Channel *chptr, const char *topic, const char *topic_info, time_t topicts) | |
1131 | { | |
1132 | if(strlen(topic) > 0) | |
1133 | { | |
1134 | if(chptr->topic == NULL) | |
1135 | allocate_topic(chptr); | |
f427c8b0 VY |
1136 | rb_strlcpy(chptr->topic, topic, TOPICLEN + 1); |
1137 | rb_strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN); | |
212380e3 AC |
1138 | chptr->topic_time = topicts; |
1139 | } | |
1140 | else | |
1141 | { | |
1142 | if(chptr->topic != NULL) | |
1143 | free_topic(chptr); | |
1144 | chptr->topic_time = 0; | |
1145 | } | |
1146 | } | |
1147 | ||
3b8a6350 | 1148 | /* channel_modes() |
212380e3 AC |
1149 | * |
1150 | * inputs - pointer to channel | |
1151 | * - pointer to client | |
f1e35c19 JT |
1152 | * output - string with simple modes |
1153 | * side effects - result from previous calls overwritten | |
212380e3 AC |
1154 | * |
1155 | * Stolen from ShadowIRCd 4 --nenolod | |
1156 | */ | |
1157 | const char * | |
3b8a6350 | 1158 | channel_modes(struct Channel *chptr, struct Client *client_p) |
212380e3 AC |
1159 | { |
1160 | int i; | |
1161 | char buf1[BUFSIZE]; | |
1162 | char buf2[BUFSIZE]; | |
1163 | static char final[BUFSIZE]; | |
1164 | char *mbuf = buf1; | |
1165 | char *pbuf = buf2; | |
1166 | ||
1167 | *mbuf++ = '+'; | |
1168 | *pbuf = '\0'; | |
1169 | ||
efccc22c | 1170 | for (i = 0; i < 256; i++) |
3b8a6350 | 1171 | if(chptr->mode.mode & chmode_flags[i]) |
efccc22c | 1172 | *mbuf++ = i; |
212380e3 | 1173 | |
3b8a6350 | 1174 | if(chptr->mode.limit) |
212380e3 AC |
1175 | { |
1176 | *mbuf++ = 'l'; | |
1177 | ||
f1e35c19 | 1178 | if(!IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1179 | pbuf += rb_sprintf(pbuf, " %d", chptr->mode.limit); |
212380e3 AC |
1180 | } |
1181 | ||
3b8a6350 | 1182 | if(*chptr->mode.key) |
212380e3 AC |
1183 | { |
1184 | *mbuf++ = 'k'; | |
1185 | ||
f1e35c19 | 1186 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1187 | pbuf += rb_sprintf(pbuf, " %s", chptr->mode.key); |
212380e3 AC |
1188 | } |
1189 | ||
3b8a6350 | 1190 | if(chptr->mode.join_num) |
212380e3 AC |
1191 | { |
1192 | *mbuf++ = 'j'; | |
1193 | ||
f1e35c19 | 1194 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 SB |
1195 | pbuf += rb_sprintf(pbuf, " %d:%d", chptr->mode.join_num, |
1196 | chptr->mode.join_time); | |
212380e3 AC |
1197 | } |
1198 | ||
2da6f6eb JT |
1199 | if(*chptr->mode.forward && |
1200 | (ConfigChannel.use_forward || !IsClient(client_p))) | |
212380e3 AC |
1201 | { |
1202 | *mbuf++ = 'f'; | |
1203 | ||
f1e35c19 | 1204 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1205 | pbuf += rb_sprintf(pbuf, " %s", chptr->mode.forward); |
212380e3 AC |
1206 | } |
1207 | ||
1208 | *mbuf = '\0'; | |
1209 | ||
f427c8b0 | 1210 | rb_strlcpy(final, buf1, sizeof final); |
1f9de103 | 1211 | rb_strlcat(final, buf2, sizeof final); |
212380e3 AC |
1212 | return final; |
1213 | } | |
1214 | ||
212380e3 AC |
1215 | /* void send_cap_mode_changes(struct Client *client_p, |
1216 | * struct Client *source_p, | |
1217 | * struct Channel *chptr, int cap, int nocap) | |
1218 | * Input: The client sending(client_p), the source client(source_p), | |
1219 | * the channel to send mode changes for(chptr) | |
1220 | * Output: None. | |
1221 | * Side-effects: Sends the appropriate mode changes to capable servers. | |
1222 | * | |
1223 | * Reverted back to my original design, except that we now keep a count | |
1224 | * of the number of servers which each combination as an optimisation, so | |
1225 | * the capabs combinations which are not needed are not worked out. -A1kmm | |
346fba92 AC |
1226 | * |
1227 | * Removed most code here because we don't need to be compatible with ircd | |
1228 | * 2.8.21+CSr and stuff. --nenolod | |
212380e3 AC |
1229 | */ |
1230 | void | |
1231 | send_cap_mode_changes(struct Client *client_p, struct Client *source_p, | |
1232 | struct Channel *chptr, struct ChModeChange mode_changes[], int mode_count) | |
1233 | { | |
1234 | static char modebuf[BUFSIZE]; | |
1235 | static char parabuf[BUFSIZE]; | |
1236 | int i, mbl, pbl, nc, mc, preflen, len; | |
1237 | char *pbuf; | |
1238 | const char *arg; | |
346fba92 | 1239 | int dir; |
212380e3 AC |
1240 | int arglen; |
1241 | ||
1242 | /* Now send to servers... */ | |
346fba92 AC |
1243 | mc = 0; |
1244 | nc = 0; | |
1245 | pbl = 0; | |
1246 | parabuf[0] = 0; | |
1247 | pbuf = parabuf; | |
1248 | dir = MODE_QUERY; | |
1249 | ||
1250 | mbl = preflen = rb_sprintf(modebuf, ":%s TMODE %ld %s ", | |
1251 | use_id(source_p), (long) chptr->channelts, | |
1252 | chptr->chname); | |
1253 | ||
1254 | /* loop the list of - modes we have */ | |
1255 | for (i = 0; i < mode_count; i++) | |
212380e3 | 1256 | { |
346fba92 AC |
1257 | /* if they dont support the cap we need, or they do support a cap they |
1258 | * cant have, then dont add it to the modebuf.. that way they wont see | |
1259 | * the mode | |
1260 | */ | |
1261 | if (mode_changes[i].letter == 0) | |
212380e3 AC |
1262 | continue; |
1263 | ||
346fba92 AC |
1264 | if (!EmptyString(mode_changes[i].id)) |
1265 | arg = mode_changes[i].id; | |
1266 | else | |
1267 | arg = mode_changes[i].arg; | |
212380e3 | 1268 | |
346fba92 | 1269 | if(arg) |
212380e3 | 1270 | { |
346fba92 | 1271 | arglen = strlen(arg); |
212380e3 | 1272 | |
346fba92 AC |
1273 | /* dont even think about it! --fl */ |
1274 | if(arglen > MODEBUFLEN - 5) | |
1275 | continue; | |
1276 | } | |
212380e3 | 1277 | |
346fba92 AC |
1278 | /* if we're creeping past the buf size, we need to send it and make |
1279 | * another line for the other modes | |
1280 | * XXX - this could give away server topology with uids being | |
1281 | * different lengths, but not much we can do, except possibly break | |
1282 | * them as if they were the longest of the nick or uid at all times, | |
1283 | * which even then won't work as we don't always know the uid -A1kmm. | |
1284 | */ | |
1285 | if(arg && ((mc == MAXMODEPARAMSSERV) || | |
1286 | ((mbl + pbl + arglen + 4) > (BUFSIZE - 3)))) | |
1287 | { | |
1288 | if(nc != 0) | |
51452a37 | 1289 | sendto_server(client_p, chptr, NOCAPS, NOCAPS, |
346fba92 AC |
1290 | "%s %s", modebuf, parabuf); |
1291 | nc = 0; | |
1292 | mc = 0; | |
1293 | ||
1294 | mbl = preflen; | |
1295 | pbl = 0; | |
1296 | pbuf = parabuf; | |
1297 | parabuf[0] = 0; | |
1298 | dir = MODE_QUERY; | |
1299 | } | |
212380e3 | 1300 | |
346fba92 AC |
1301 | if(dir != mode_changes[i].dir) |
1302 | { | |
1303 | modebuf[mbl++] = (mode_changes[i].dir == MODE_ADD) ? '+' : '-'; | |
1304 | dir = mode_changes[i].dir; | |
1305 | } | |
212380e3 | 1306 | |
346fba92 AC |
1307 | modebuf[mbl++] = mode_changes[i].letter; |
1308 | modebuf[mbl] = 0; | |
1309 | nc++; | |
212380e3 | 1310 | |
346fba92 AC |
1311 | if(arg != NULL) |
1312 | { | |
1313 | len = rb_sprintf(pbuf, "%s ", arg); | |
1314 | pbuf += len; | |
1315 | pbl += len; | |
1316 | mc++; | |
212380e3 | 1317 | } |
346fba92 | 1318 | } |
212380e3 | 1319 | |
346fba92 AC |
1320 | if(pbl && parabuf[pbl - 1] == ' ') |
1321 | parabuf[pbl - 1] = 0; | |
212380e3 | 1322 | |
346fba92 | 1323 | if(nc != 0) |
51452a37 | 1324 | sendto_server(client_p, chptr, NOCAPS, NOCAPS, "%s %s", modebuf, parabuf); |
212380e3 | 1325 | } |
dca9e552 | 1326 | |
346fba92 | 1327 | void |
dca9e552 JT |
1328 | resv_chan_forcepart(const char *name, const char *reason, int temp_time) |
1329 | { | |
1330 | rb_dlink_node *ptr; | |
1331 | rb_dlink_node *next_ptr; | |
1332 | struct Channel *chptr; | |
1333 | struct membership *msptr; | |
1334 | struct Client *target_p; | |
1335 | ||
1336 | if(!ConfigChannel.resv_forcepart) | |
1337 | return; | |
1338 | ||
1339 | /* for each user on our server in the channel list | |
1340 | * send them a PART, and notify opers. | |
1341 | */ | |
1342 | chptr = find_channel(name); | |
1343 | if(chptr != NULL) | |
1344 | { | |
1345 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head) | |
1346 | { | |
1347 | msptr = ptr->data; | |
1348 | target_p = msptr->client_p; | |
1349 | ||
1350 | if(IsExemptResv(target_p)) | |
1351 | continue; | |
1352 | ||
1353 | sendto_server(target_p, chptr, CAP_TS6, NOCAPS, | |
1354 | ":%s PART %s", target_p->id, chptr->chname); | |
1355 | ||
1356 | sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s", | |
1357 | target_p->name, target_p->username, | |
1358 | target_p->host, chptr->chname, target_p->name); | |
1359 | ||
1360 | remove_user_from_channel(msptr); | |
1361 | ||
1362 | /* notify opers & user they were removed from the channel */ | |
1363 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1364 | "Forced PART for %s!%s@%s from %s (%s)", | |
55abcbb2 | 1365 | target_p->name, target_p->username, |
dca9e552 JT |
1366 | target_p->host, name, reason); |
1367 | ||
1368 | if(temp_time > 0) | |
1369 | sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.", | |
1370 | name); | |
1371 | else | |
1372 | sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.", | |
1373 | name); | |
1374 | } | |
1375 | } | |
1376 | } |