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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" |
14482679 | 46 | #include "inline/stringops.h" |
212380e3 | 47 | |
18e4d421 | 48 | struct config_channel_entry ConfigChannel; |
c3d10343 | 49 | rb_dlink_list global_channel_list; |
b617afdc VY |
50 | static rb_bh *channel_heap; |
51 | static rb_bh *ban_heap; | |
52 | static rb_bh *topic_heap; | |
53 | static rb_bh *member_heap; | |
54 | ||
212380e3 AC |
55 | static void free_topic(struct Channel *chptr); |
56 | ||
57 | static int h_can_join; | |
0aa36c5f | 58 | static int h_can_send; |
749d8c11 | 59 | int h_get_channel_access; |
212380e3 AC |
60 | |
61 | /* init_channels() | |
62 | * | |
63 | * input - | |
64 | * output - | |
65 | * side effects - initialises the various blockheaps | |
66 | */ | |
67 | void | |
68 | init_channels(void) | |
69 | { | |
c608a061 AC |
70 | channel_heap = rb_bh_create(sizeof(struct Channel), CHANNEL_HEAP_SIZE, "channel_heap"); |
71 | ban_heap = rb_bh_create(sizeof(struct Ban), BAN_HEAP_SIZE, "ban_heap"); | |
72 | topic_heap = rb_bh_create(TOPICLEN + 1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE, "topic_heap"); | |
73 | member_heap = rb_bh_create(sizeof(struct membership), MEMBER_HEAP_SIZE, "member_heap"); | |
212380e3 AC |
74 | |
75 | h_can_join = register_hook("can_join"); | |
0aa36c5f | 76 | h_can_send = register_hook("can_send"); |
749d8c11 | 77 | h_get_channel_access = register_hook("get_channel_access"); |
212380e3 AC |
78 | } |
79 | ||
80 | /* | |
81 | * allocate_channel - Allocates a channel | |
82 | */ | |
83 | struct Channel * | |
84 | allocate_channel(const char *chname) | |
85 | { | |
86 | struct Channel *chptr; | |
398b6a73 | 87 | chptr = rb_bh_alloc(channel_heap); |
47a03750 | 88 | chptr->chname = rb_strdup(chname); |
212380e3 AC |
89 | return (chptr); |
90 | } | |
91 | ||
92 | void | |
93 | free_channel(struct Channel *chptr) | |
94 | { | |
637c4932 | 95 | rb_free(chptr->chname); |
78e6b731 | 96 | rb_free(chptr->mode_lock); |
398b6a73 | 97 | rb_bh_free(channel_heap, chptr); |
212380e3 AC |
98 | } |
99 | ||
100 | struct Ban * | |
765d839d | 101 | allocate_ban(const char *banstr, const char *who, const char *forward) |
212380e3 AC |
102 | { |
103 | struct Ban *bptr; | |
398b6a73 | 104 | bptr = rb_bh_alloc(ban_heap); |
47a03750 VY |
105 | bptr->banstr = rb_strdup(banstr); |
106 | bptr->who = rb_strdup(who); | |
765d839d | 107 | bptr->forward = forward ? rb_strdup(forward) : NULL; |
212380e3 AC |
108 | |
109 | return (bptr); | |
110 | } | |
111 | ||
112 | void | |
113 | free_ban(struct Ban *bptr) | |
114 | { | |
637c4932 VY |
115 | rb_free(bptr->banstr); |
116 | rb_free(bptr->who); | |
765d839d | 117 | rb_free(bptr->forward); |
398b6a73 | 118 | rb_bh_free(ban_heap, bptr); |
212380e3 AC |
119 | } |
120 | ||
27912fd4 AC |
121 | /* |
122 | * send_channel_join() | |
123 | * | |
124 | * input - channel to join, client joining. | |
125 | * output - none | |
126 | * side effects - none | |
127 | */ | |
128 | void | |
129 | send_channel_join(struct Channel *chptr, struct Client *client_p) | |
130 | { | |
131 | if (!IsClient(client_p)) | |
132 | return; | |
133 | ||
92052a5c AC |
134 | sendto_channel_local_with_capability(ALL_MEMBERS, NOCAPS, CLICAP_EXTENDED_JOIN, chptr, ":%s!%s@%s JOIN %s", |
135 | client_p->name, client_p->username, client_p->host, chptr->chname); | |
136 | ||
26e9dd93 | 137 | sendto_channel_local_with_capability(ALL_MEMBERS, CLICAP_EXTENDED_JOIN, NOCAPS, chptr, ":%s!%s@%s JOIN %s %s :%s", |
92052a5c AC |
138 | client_p->name, client_p->username, client_p->host, chptr->chname, |
139 | EmptyString(client_p->user->suser) ? "*" : client_p->user->suser, | |
26e9dd93 | 140 | client_p->info); |
c5bbc603 KB |
141 | |
142 | /* Send away message to away-notify enabled clients. */ | |
143 | if (client_p->user->away) | |
144 | sendto_channel_local_with_capability_butone(client_p, ALL_MEMBERS, CLICAP_AWAY_NOTIFY, NOCAPS, chptr, | |
145 | ":%s!%s@%s AWAY :%s", client_p->name, client_p->username, | |
146 | client_p->host, client_p->user->away); | |
27912fd4 | 147 | } |
212380e3 AC |
148 | |
149 | /* find_channel_membership() | |
150 | * | |
151 | * input - channel to find them in, client to find | |
152 | * output - membership of client in channel, else NULL | |
153 | * side effects - | |
154 | */ | |
155 | struct membership * | |
156 | find_channel_membership(struct Channel *chptr, struct Client *client_p) | |
157 | { | |
158 | struct membership *msptr; | |
330fc5c1 | 159 | rb_dlink_node *ptr; |
212380e3 AC |
160 | |
161 | if(!IsClient(client_p)) | |
162 | return NULL; | |
163 | ||
164 | /* Pick the most efficient list to use to be nice to things like | |
165 | * CHANSERV which could be in a large number of channels | |
166 | */ | |
330fc5c1 | 167 | if(rb_dlink_list_length(&chptr->members) < rb_dlink_list_length(&client_p->user->channel)) |
212380e3 | 168 | { |
5cefa1d6 | 169 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
170 | { |
171 | msptr = ptr->data; | |
172 | ||
173 | if(msptr->client_p == client_p) | |
174 | return msptr; | |
175 | } | |
176 | } | |
177 | else | |
178 | { | |
5cefa1d6 | 179 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
180 | { |
181 | msptr = ptr->data; | |
182 | ||
183 | if(msptr->chptr == chptr) | |
184 | return msptr; | |
185 | } | |
186 | } | |
187 | ||
188 | return NULL; | |
189 | } | |
190 | ||
191 | /* find_channel_status() | |
192 | * | |
193 | * input - membership to get status for, whether we can combine flags | |
194 | * output - flags of user on channel | |
195 | * side effects - | |
196 | */ | |
197 | const char * | |
198 | find_channel_status(struct membership *msptr, int combine) | |
199 | { | |
200 | static char buffer[3]; | |
201 | char *p; | |
202 | ||
203 | p = buffer; | |
204 | ||
205 | if(is_chanop(msptr)) | |
206 | { | |
207 | if(!combine) | |
208 | return "@"; | |
209 | *p++ = '@'; | |
210 | } | |
211 | ||
212 | if(is_voiced(msptr)) | |
213 | *p++ = '+'; | |
214 | ||
215 | *p = '\0'; | |
216 | return buffer; | |
217 | } | |
218 | ||
219 | /* add_user_to_channel() | |
220 | * | |
221 | * input - channel to add client to, client to add, channel flags | |
55abcbb2 | 222 | * output - |
212380e3 AC |
223 | * side effects - user is added to channel |
224 | */ | |
225 | void | |
226 | add_user_to_channel(struct Channel *chptr, struct Client *client_p, int flags) | |
227 | { | |
228 | struct membership *msptr; | |
229 | ||
230 | s_assert(client_p->user != NULL); | |
231 | if(client_p->user == NULL) | |
232 | return; | |
233 | ||
398b6a73 | 234 | msptr = rb_bh_alloc(member_heap); |
212380e3 AC |
235 | |
236 | msptr->chptr = chptr; | |
237 | msptr->client_p = client_p; | |
238 | msptr->flags = flags; | |
239 | ||
330fc5c1 AC |
240 | rb_dlinkAdd(msptr, &msptr->usernode, &client_p->user->channel); |
241 | rb_dlinkAdd(msptr, &msptr->channode, &chptr->members); | |
212380e3 AC |
242 | |
243 | if(MyClient(client_p)) | |
330fc5c1 | 244 | rb_dlinkAdd(msptr, &msptr->locchannode, &chptr->locmembers); |
212380e3 AC |
245 | } |
246 | ||
247 | /* remove_user_from_channel() | |
248 | * | |
249 | * input - membership pointer to remove from channel | |
250 | * output - | |
251 | * side effects - membership (thus user) is removed from channel | |
252 | */ | |
253 | void | |
254 | remove_user_from_channel(struct membership *msptr) | |
255 | { | |
256 | struct Client *client_p; | |
257 | struct Channel *chptr; | |
258 | s_assert(msptr != NULL); | |
259 | if(msptr == NULL) | |
260 | return; | |
261 | ||
262 | client_p = msptr->client_p; | |
263 | chptr = msptr->chptr; | |
264 | ||
330fc5c1 AC |
265 | rb_dlinkDelete(&msptr->usernode, &client_p->user->channel); |
266 | rb_dlinkDelete(&msptr->channode, &chptr->members); | |
212380e3 AC |
267 | |
268 | if(client_p->servptr == &me) | |
330fc5c1 | 269 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 270 | |
330fc5c1 | 271 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
272 | destroy_channel(chptr); |
273 | ||
398b6a73 | 274 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
275 | |
276 | return; | |
277 | } | |
278 | ||
279 | /* remove_user_from_channels() | |
280 | * | |
281 | * input - user to remove from all channels | |
282 | * output - | |
283 | * side effects - user is removed from all channels | |
284 | */ | |
285 | void | |
286 | remove_user_from_channels(struct Client *client_p) | |
287 | { | |
288 | struct Channel *chptr; | |
289 | struct membership *msptr; | |
330fc5c1 | 290 | rb_dlink_node *ptr; |
637c4932 | 291 | rb_dlink_node *next_ptr; |
212380e3 AC |
292 | |
293 | if(client_p == NULL) | |
294 | return; | |
295 | ||
637c4932 | 296 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->user->channel.head) |
212380e3 AC |
297 | { |
298 | msptr = ptr->data; | |
299 | chptr = msptr->chptr; | |
300 | ||
330fc5c1 | 301 | rb_dlinkDelete(&msptr->channode, &chptr->members); |
212380e3 AC |
302 | |
303 | if(client_p->servptr == &me) | |
330fc5c1 | 304 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 305 | |
330fc5c1 | 306 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
307 | destroy_channel(chptr); |
308 | ||
398b6a73 | 309 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
310 | } |
311 | ||
312 | client_p->user->channel.head = client_p->user->channel.tail = NULL; | |
313 | client_p->user->channel.length = 0; | |
314 | } | |
315 | ||
316 | /* invalidate_bancache_user() | |
317 | * | |
318 | * input - user to invalidate ban cache for | |
319 | * output - | |
320 | * side effects - ban cache is invalidated for all memberships of that user | |
321 | * to be used after a nick change | |
322 | */ | |
323 | void | |
324 | invalidate_bancache_user(struct Client *client_p) | |
325 | { | |
326 | struct membership *msptr; | |
330fc5c1 | 327 | rb_dlink_node *ptr; |
212380e3 AC |
328 | |
329 | if(client_p == NULL) | |
330 | return; | |
331 | ||
5cefa1d6 | 332 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
333 | { |
334 | msptr = ptr->data; | |
335 | msptr->bants = 0; | |
336 | msptr->flags &= ~CHFL_BANNED; | |
337 | } | |
338 | } | |
339 | ||
340 | /* check_channel_name() | |
341 | * | |
342 | * input - channel name | |
343 | * output - 1 if valid channel name, else 0 | |
344 | * side effects - | |
345 | */ | |
346 | int | |
347 | check_channel_name(const char *name) | |
348 | { | |
349 | s_assert(name != NULL); | |
350 | if(name == NULL) | |
351 | return 0; | |
352 | ||
353 | for (; *name; ++name) | |
354 | { | |
355 | if(!IsChanChar(*name)) | |
356 | return 0; | |
357 | } | |
358 | ||
359 | return 1; | |
360 | } | |
361 | ||
362 | /* free_channel_list() | |
363 | * | |
330fc5c1 | 364 | * input - rb_dlink list to free |
212380e3 AC |
365 | * output - |
366 | * side effects - list of b/e/I modes is cleared | |
367 | */ | |
368 | void | |
330fc5c1 | 369 | free_channel_list(rb_dlink_list * list) |
212380e3 | 370 | { |
330fc5c1 | 371 | rb_dlink_node *ptr; |
637c4932 | 372 | rb_dlink_node *next_ptr; |
212380e3 AC |
373 | struct Ban *actualBan; |
374 | ||
637c4932 | 375 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
376 | { |
377 | actualBan = ptr->data; | |
378 | free_ban(actualBan); | |
379 | } | |
380 | ||
381 | list->head = list->tail = NULL; | |
382 | list->length = 0; | |
383 | } | |
384 | ||
385 | /* destroy_channel() | |
386 | * | |
387 | * input - channel to destroy | |
388 | * output - | |
389 | * side effects - channel is obliterated | |
390 | */ | |
391 | void | |
392 | destroy_channel(struct Channel *chptr) | |
393 | { | |
637c4932 | 394 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 395 | |
637c4932 | 396 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) |
212380e3 AC |
397 | { |
398 | del_invite(chptr, ptr->data); | |
399 | } | |
400 | ||
401 | /* free all bans/exceptions/denies */ | |
402 | free_channel_list(&chptr->banlist); | |
403 | free_channel_list(&chptr->exceptlist); | |
404 | free_channel_list(&chptr->invexlist); | |
fea1ad52 | 405 | free_channel_list(&chptr->quietlist); |
212380e3 AC |
406 | |
407 | /* Free the topic */ | |
408 | free_topic(chptr); | |
409 | ||
330fc5c1 | 410 | rb_dlinkDelete(&chptr->node, &global_channel_list); |
212380e3 AC |
411 | del_from_channel_hash(chptr->chname, chptr); |
412 | free_channel(chptr); | |
413 | } | |
414 | ||
415 | /* channel_pub_or_secret() | |
416 | * | |
417 | * input - channel | |
418 | * output - "=" if public, "@" if secret, else "*" | |
419 | * side effects - | |
420 | */ | |
421 | static const char * | |
422 | channel_pub_or_secret(struct Channel *chptr) | |
423 | { | |
424 | if(PubChannel(chptr)) | |
425 | return ("="); | |
426 | else if(SecretChannel(chptr)) | |
427 | return ("@"); | |
428 | return ("*"); | |
429 | } | |
430 | ||
431 | /* channel_member_names() | |
432 | * | |
433 | * input - channel to list, client to list to, show endofnames | |
434 | * output - | |
435 | * side effects - client is given list of users on channel | |
436 | */ | |
437 | void | |
438 | channel_member_names(struct Channel *chptr, struct Client *client_p, int show_eon) | |
439 | { | |
440 | struct membership *msptr; | |
441 | struct Client *target_p; | |
330fc5c1 | 442 | rb_dlink_node *ptr; |
212380e3 AC |
443 | char lbuf[BUFSIZE]; |
444 | char *t; | |
445 | int mlen; | |
446 | int tlen; | |
447 | int cur_len; | |
448 | int is_member; | |
449 | int stack = IsCapable(client_p, CLICAP_MULTI_PREFIX); | |
450 | ||
451 | if(ShowChannel(client_p, chptr)) | |
452 | { | |
453 | is_member = IsMember(client_p, chptr); | |
454 | ||
b2f0da88 | 455 | cur_len = mlen = rb_sprintf(lbuf, form_str(RPL_NAMREPLY), |
212380e3 AC |
456 | me.name, client_p->name, |
457 | channel_pub_or_secret(chptr), chptr->chname); | |
458 | ||
459 | t = lbuf + cur_len; | |
460 | ||
5cefa1d6 | 461 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
462 | { |
463 | msptr = ptr->data; | |
464 | target_p = msptr->client_p; | |
465 | ||
466 | if(IsInvisible(target_p) && !is_member) | |
467 | continue; | |
468 | ||
1b54aa5c | 469 | if (IsCapable(client_p, CLICAP_USERHOST_IN_NAMES)) |
212380e3 | 470 | { |
1b54aa5c MT |
471 | /* space, possible "@+" prefix */ |
472 | if (cur_len + strlen(target_p->name) + strlen(target_p->username) + strlen(target_p->host) + 5 >= BUFSIZE - 5) | |
473 | { | |
474 | *(t - 1) = '\0'; | |
475 | sendto_one(client_p, "%s", lbuf); | |
476 | cur_len = mlen; | |
477 | t = lbuf + mlen; | |
478 | } | |
479 | ||
480 | tlen = rb_sprintf(t, "%s%s!%s@%s ", find_channel_status(msptr, stack), | |
481 | target_p->name, target_p->username, target_p->host); | |
482 | } | |
483 | else | |
484 | { | |
485 | /* space, possible "@+" prefix */ | |
486 | if(cur_len + strlen(target_p->name) + 3 >= BUFSIZE - 3) | |
487 | { | |
488 | *(t - 1) = '\0'; | |
489 | sendto_one(client_p, "%s", lbuf); | |
490 | cur_len = mlen; | |
491 | t = lbuf + mlen; | |
492 | } | |
493 | ||
494 | tlen = rb_sprintf(t, "%s%s ", find_channel_status(msptr, stack), | |
495 | target_p->name); | |
212380e3 | 496 | } |
212380e3 AC |
497 | |
498 | cur_len += tlen; | |
499 | t += tlen; | |
500 | } | |
501 | ||
502 | /* The old behaviour here was to always output our buffer, | |
503 | * even if there are no clients we can show. This happens | |
504 | * when a client does "NAMES" with no parameters, and all | |
505 | * the clients on a -sp channel are +i. I dont see a good | |
506 | * reason for keeping that behaviour, as it just wastes | |
507 | * bandwidth. --anfl | |
508 | */ | |
509 | if(cur_len != mlen) | |
510 | { | |
511 | *(t - 1) = '\0'; | |
512 | sendto_one(client_p, "%s", lbuf); | |
513 | } | |
514 | } | |
515 | ||
516 | if(show_eon) | |
517 | sendto_one(client_p, form_str(RPL_ENDOFNAMES), | |
518 | me.name, client_p->name, chptr->chname); | |
519 | } | |
520 | ||
521 | /* del_invite() | |
522 | * | |
523 | * input - channel to remove invite from, client to remove | |
524 | * output - | |
525 | * side effects - user is removed from invite list, if exists | |
526 | */ | |
527 | void | |
528 | del_invite(struct Channel *chptr, struct Client *who) | |
529 | { | |
330fc5c1 AC |
530 | rb_dlinkFindDestroy(who, &chptr->invites); |
531 | rb_dlinkFindDestroy(chptr, &who->user->invited); | |
212380e3 AC |
532 | } |
533 | ||
a14de124 | 534 | /* is_banned_list() |
212380e3 | 535 | * |
a14de124 JT |
536 | * input - channel to check bans for, ban list (banlist or quietlist), |
537 | * user to check bans against, optional prebuilt buffers, | |
538 | * optional forward channel pointer | |
212380e3 AC |
539 | * output - 1 if banned, else 0 |
540 | * side effects - | |
541 | */ | |
a14de124 JT |
542 | static int |
543 | is_banned_list(struct Channel *chptr, rb_dlink_list *list, | |
544 | struct Client *who, struct membership *msptr, | |
545 | const char *s, const char *s2, const char **forward) | |
212380e3 AC |
546 | { |
547 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
548 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
549 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
1c60de97 | 550 | char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6]; |
212380e3 | 551 | char *s3 = NULL; |
1c60de97 JT |
552 | char *s4 = NULL; |
553 | struct sockaddr_in ip4; | |
330fc5c1 | 554 | rb_dlink_node *ptr; |
212380e3 AC |
555 | struct Ban *actualBan = NULL; |
556 | struct Ban *actualExcept = NULL; | |
557 | ||
558 | if(!MyClient(who)) | |
559 | return 0; | |
560 | ||
561 | /* if the buffers havent been built, do it here */ | |
562 | if(s == NULL) | |
563 | { | |
b2f0da88 AC |
564 | rb_sprintf(src_host, "%s!%s@%s", who->name, who->username, who->host); |
565 | rb_sprintf(src_iphost, "%s!%s@%s", who->name, who->username, who->sockhost); | |
212380e3 AC |
566 | |
567 | s = src_host; | |
568 | s2 = src_iphost; | |
569 | } | |
570 | if(who->localClient->mangledhost != NULL) | |
571 | { | |
572 | /* if host mangling mode enabled, also check their real host */ | |
573 | if(!strcmp(who->host, who->localClient->mangledhost)) | |
574 | { | |
b2f0da88 | 575 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->orighost); |
212380e3 AC |
576 | s3 = src_althost; |
577 | } | |
578 | /* if host mangling mode not enabled and no other spoof, | |
579 | * also check the mangled form of their host */ | |
580 | else if (!IsDynSpoof(who)) | |
581 | { | |
b2f0da88 | 582 | rb_sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->localClient->mangledhost); |
212380e3 AC |
583 | s3 = src_althost; |
584 | } | |
585 | } | |
1c60de97 JT |
586 | #ifdef RB_IPV6 |
587 | if(who->localClient->ip.ss_family == AF_INET6 && | |
588 | ipv4_from_ipv6((const struct sockaddr_in6 *)&who->localClient->ip, &ip4)) | |
589 | { | |
590 | rb_sprintf(src_ip4host, "%s!%s@", who->name, who->username); | |
591 | s4 = src_ip4host + strlen(src_ip4host); | |
592 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
593 | s4, src_ip4host + sizeof src_ip4host - s4); | |
594 | s4 = src_ip4host; | |
595 | } | |
596 | #endif | |
212380e3 | 597 | |
a14de124 | 598 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
599 | { |
600 | actualBan = ptr->data; | |
601 | if(match(actualBan->banstr, s) || | |
602 | match(actualBan->banstr, s2) || | |
603 | match_cidr(actualBan->banstr, s2) || | |
604 | match_extban(actualBan->banstr, who, chptr, CHFL_BAN) || | |
1c60de97 JT |
605 | (s3 != NULL && match(actualBan->banstr, s3)) |
606 | #ifdef RB_IPV6 | |
607 | || | |
608 | (s4 != NULL && (match(actualBan->banstr, s4) || match_cidr(actualBan->banstr, s4))) | |
609 | #endif | |
610 | ) | |
212380e3 AC |
611 | break; |
612 | else | |
613 | actualBan = NULL; | |
614 | } | |
615 | ||
616 | if((actualBan != NULL) && ConfigChannel.use_except) | |
617 | { | |
5cefa1d6 | 618 | RB_DLINK_FOREACH(ptr, chptr->exceptlist.head) |
212380e3 AC |
619 | { |
620 | actualExcept = ptr->data; | |
621 | ||
622 | /* theyre exempted.. */ | |
623 | if(match(actualExcept->banstr, s) || | |
624 | match(actualExcept->banstr, s2) || | |
625 | match_cidr(actualExcept->banstr, s2) || | |
626 | match_extban(actualExcept->banstr, who, chptr, CHFL_EXCEPTION) || | |
627 | (s3 != NULL && match(actualExcept->banstr, s3))) | |
628 | { | |
629 | /* cache the fact theyre not banned */ | |
630 | if(msptr != NULL) | |
631 | { | |
632 | msptr->bants = chptr->bants; | |
633 | msptr->flags &= ~CHFL_BANNED; | |
634 | } | |
635 | ||
636 | return CHFL_EXCEPTION; | |
637 | } | |
638 | } | |
639 | } | |
640 | ||
641 | /* cache the banned/not banned status */ | |
642 | if(msptr != NULL) | |
643 | { | |
644 | msptr->bants = chptr->bants; | |
645 | ||
646 | if(actualBan != NULL) | |
647 | { | |
648 | msptr->flags |= CHFL_BANNED; | |
649 | return CHFL_BAN; | |
650 | } | |
651 | else | |
652 | { | |
653 | msptr->flags &= ~CHFL_BANNED; | |
654 | return 0; | |
655 | } | |
656 | } | |
657 | ||
765d839d EM |
658 | if (actualBan && actualBan->forward && forward) |
659 | *forward = actualBan->forward; | |
660 | ||
212380e3 AC |
661 | return ((actualBan ? CHFL_BAN : 0)); |
662 | } | |
663 | ||
a14de124 JT |
664 | /* is_banned() |
665 | * | |
666 | * input - channel to check bans for, user to check bans against | |
667 | * optional prebuilt buffers, optional forward channel pointer | |
668 | * output - 1 if banned, else 0 | |
669 | * side effects - | |
670 | */ | |
671 | int | |
672 | is_banned(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
673 | const char *s, const char *s2, const char **forward) | |
674 | { | |
2f9687c4 AC |
675 | if (chptr->last_checked_client != NULL && |
676 | who == chptr->last_checked_client && | |
677 | chptr->last_checked_type == CHFL_BAN && | |
1e8138af | 678 | chptr->last_checked_ts > chptr->bants) |
2f9687c4 AC |
679 | return chptr->last_checked_result; |
680 | ||
bcbc6bd9 | 681 | chptr->last_checked_client = who; |
2f9687c4 AC |
682 | chptr->last_checked_type = CHFL_BAN; |
683 | chptr->last_checked_result = is_banned_list(chptr, &chptr->banlist, who, msptr, s, s2, forward); | |
684 | chptr->last_checked_ts = rb_current_time(); | |
685 | ||
686 | return chptr->last_checked_result; | |
a14de124 JT |
687 | } |
688 | ||
212380e3 AC |
689 | /* is_quieted() |
690 | * | |
691 | * input - channel to check bans for, user to check bans against | |
692 | * optional prebuilt buffers | |
693 | * output - 1 if banned, else 0 | |
694 | * side effects - | |
695 | */ | |
696 | int | |
697 | is_quieted(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
698 | const char *s, const char *s2) | |
699 | { | |
2f9687c4 AC |
700 | if (chptr->last_checked_client != NULL && |
701 | who == chptr->last_checked_client && | |
702 | chptr->last_checked_type == CHFL_QUIET && | |
1e8138af | 703 | chptr->last_checked_ts > chptr->bants) |
2f9687c4 AC |
704 | return chptr->last_checked_result; |
705 | ||
bcbc6bd9 | 706 | chptr->last_checked_client = who; |
2f9687c4 AC |
707 | chptr->last_checked_type = CHFL_QUIET; |
708 | chptr->last_checked_result = is_banned_list(chptr, &chptr->quietlist, who, msptr, s, s2, NULL); | |
709 | chptr->last_checked_ts = rb_current_time(); | |
710 | ||
711 | return chptr->last_checked_result; | |
212380e3 AC |
712 | } |
713 | ||
714 | /* can_join() | |
715 | * | |
716 | * input - client to check, channel to check for, key | |
765d839d | 717 | * output - reason for not being able to join, else 0, channel name to forward to |
212380e3 | 718 | * side effects - |
a63f7af7 | 719 | * caveats - this function should only be called on a local user. |
212380e3 AC |
720 | */ |
721 | int | |
fe74401b | 722 | can_join(struct Client *source_p, struct Channel *chptr, const char *key, const char **forward) |
212380e3 | 723 | { |
330fc5c1 AC |
724 | rb_dlink_node *invite = NULL; |
725 | rb_dlink_node *ptr; | |
212380e3 AC |
726 | struct Ban *invex = NULL; |
727 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
728 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
729 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
730 | int use_althost = 0; | |
1ebf4db4 | 731 | int i = 0; |
212380e3 AC |
732 | hook_data_channel moduledata; |
733 | ||
734 | s_assert(source_p->localClient != NULL); | |
735 | ||
8bb19bd7 AC |
736 | moduledata.client = source_p; |
737 | moduledata.chptr = chptr; | |
738 | moduledata.approved = 0; | |
739 | ||
b2f0da88 AC |
740 | rb_sprintf(src_host, "%s!%s@%s", source_p->name, source_p->username, source_p->host); |
741 | rb_sprintf(src_iphost, "%s!%s@%s", source_p->name, source_p->username, source_p->sockhost); | |
212380e3 AC |
742 | if(source_p->localClient->mangledhost != NULL) |
743 | { | |
744 | /* if host mangling mode enabled, also check their real host */ | |
745 | if(!strcmp(source_p->host, source_p->localClient->mangledhost)) | |
746 | { | |
b2f0da88 | 747 | rb_sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->orighost); |
212380e3 AC |
748 | use_althost = 1; |
749 | } | |
750 | /* if host mangling mode not enabled and no other spoof, | |
751 | * also check the mangled form of their host */ | |
752 | else if (!IsDynSpoof(source_p)) | |
753 | { | |
b2f0da88 | 754 | rb_sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->localClient->mangledhost); |
212380e3 AC |
755 | use_althost = 1; |
756 | } | |
757 | } | |
758 | ||
765d839d | 759 | if((is_banned(chptr, source_p, NULL, src_host, src_iphost, forward)) == CHFL_BAN) |
8bb19bd7 AC |
760 | { |
761 | moduledata.approved = ERR_BANNEDFROMCHAN; | |
762 | goto finish_join_check; | |
763 | } | |
212380e3 | 764 | |
765d839d EM |
765 | if(*chptr->mode.key && (EmptyString(key) || irccmp(chptr->mode.key, key))) |
766 | { | |
767 | moduledata.approved = ERR_BADCHANNELKEY; | |
768 | goto finish_join_check; | |
769 | } | |
770 | ||
771 | /* All checks from this point on will forward... */ | |
772 | if(forward) | |
773 | *forward = chptr->mode.forward; | |
774 | ||
212380e3 AC |
775 | if(chptr->mode.mode & MODE_INVITEONLY) |
776 | { | |
5cefa1d6 | 777 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
212380e3 | 778 | { |
1ebf4db4 | 779 | if(invite->data == chptr) |
212380e3 AC |
780 | break; |
781 | } | |
1ebf4db4 | 782 | if(invite == NULL) |
212380e3 AC |
783 | { |
784 | if(!ConfigChannel.use_invex) | |
8bb19bd7 | 785 | moduledata.approved = ERR_INVITEONLYCHAN; |
5cefa1d6 | 786 | RB_DLINK_FOREACH(ptr, chptr->invexlist.head) |
212380e3 AC |
787 | { |
788 | invex = ptr->data; | |
789 | if(match(invex->banstr, src_host) | |
790 | || match(invex->banstr, src_iphost) | |
791 | || match_cidr(invex->banstr, src_iphost) | |
792 | || match_extban(invex->banstr, source_p, chptr, CHFL_INVEX) | |
793 | || (use_althost && match(invex->banstr, src_althost))) | |
794 | break; | |
795 | } | |
796 | if(ptr == NULL) | |
8bb19bd7 | 797 | moduledata.approved = ERR_INVITEONLYCHAN; |
212380e3 AC |
798 | } |
799 | } | |
800 | ||
212380e3 | 801 | if(chptr->mode.limit && |
330fc5c1 | 802 | rb_dlink_list_length(&chptr->members) >= (unsigned long) chptr->mode.limit) |
1ebf4db4 | 803 | i = ERR_CHANNELISFULL; |
212380e3 | 804 | if(chptr->mode.mode & MODE_REGONLY && EmptyString(source_p->user->suser)) |
1ebf4db4 | 805 | i = ERR_NEEDREGGEDNICK; |
212380e3 | 806 | /* join throttling stuff --nenolod */ |
1ebf4db4 | 807 | else if(chptr->mode.join_num > 0 && chptr->mode.join_time > 0) |
212380e3 | 808 | { |
55abcbb2 | 809 | if ((rb_current_time() - chptr->join_delta <= |
212380e3 AC |
810 | chptr->mode.join_time) && (chptr->join_count >= |
811 | chptr->mode.join_num)) | |
1ebf4db4 JT |
812 | i = ERR_THROTTLE; |
813 | } | |
814 | ||
815 | /* allow /invite to override +l/+r/+j also -- jilles */ | |
816 | if (i != 0 && invite == NULL) | |
817 | { | |
5cefa1d6 | 818 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
1ebf4db4 JT |
819 | { |
820 | if(invite->data == chptr) | |
821 | break; | |
822 | } | |
823 | if (invite == NULL) | |
8bb19bd7 | 824 | moduledata.approved = i; |
212380e3 AC |
825 | } |
826 | ||
8bb19bd7 | 827 | finish_join_check: |
212380e3 AC |
828 | call_hook(h_can_join, &moduledata); |
829 | ||
830 | return moduledata.approved; | |
831 | } | |
832 | ||
833 | /* can_send() | |
834 | * | |
835 | * input - user to check in channel, membership pointer | |
836 | * output - whether can explicitly send or not, else CAN_SEND_NONOP | |
837 | * side effects - | |
838 | */ | |
839 | int | |
840 | can_send(struct Channel *chptr, struct Client *source_p, struct membership *msptr) | |
841 | { | |
0aa36c5f AC |
842 | hook_data_channel_approval moduledata; |
843 | ||
844 | moduledata.approved = CAN_SEND_NONOP; | |
202d4966 | 845 | moduledata.dir = MODE_QUERY; |
0aa36c5f | 846 | |
212380e3 AC |
847 | if(IsServer(source_p) || IsService(source_p)) |
848 | return CAN_SEND_OPV; | |
849 | ||
850 | if(MyClient(source_p) && hash_find_resv(chptr->chname) && | |
851 | !IsOper(source_p) && !IsExemptResv(source_p)) | |
0aa36c5f | 852 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
853 | |
854 | if(msptr == NULL) | |
855 | { | |
856 | msptr = find_channel_membership(chptr, source_p); | |
857 | ||
858 | if(msptr == NULL) | |
859 | { | |
860 | /* if its +m or +n and theyre not in the channel, | |
861 | * they cant send. we dont check bans here because | |
862 | * theres no possibility of caching them --fl | |
863 | */ | |
864 | if(chptr->mode.mode & MODE_NOPRIVMSGS || chptr->mode.mode & MODE_MODERATED) | |
0aa36c5f | 865 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 866 | else |
0aa36c5f | 867 | moduledata.approved = CAN_SEND_NONOP; |
b697041e AC |
868 | |
869 | return moduledata.approved; | |
212380e3 AC |
870 | } |
871 | } | |
872 | ||
212380e3 | 873 | if(chptr->mode.mode & MODE_MODERATED) |
0aa36c5f | 874 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
875 | |
876 | if(MyClient(source_p)) | |
877 | { | |
878 | /* cached can_send */ | |
879 | if(msptr->bants == chptr->bants) | |
880 | { | |
881 | if(can_send_banned(msptr)) | |
0aa36c5f | 882 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 883 | } |
765d839d | 884 | else if(is_banned(chptr, source_p, msptr, NULL, NULL, NULL) == CHFL_BAN |
212380e3 | 885 | || is_quieted(chptr, source_p, msptr, NULL, NULL) == CHFL_BAN) |
0aa36c5f | 886 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
887 | } |
888 | ||
e06988c6 AC |
889 | if(is_chanop_voiced(msptr)) |
890 | moduledata.approved = CAN_SEND_OPV; | |
891 | ||
f4b52a0a EM |
892 | moduledata.client = source_p; |
893 | moduledata.chptr = msptr->chptr; | |
894 | moduledata.msptr = msptr; | |
895 | moduledata.target = NULL; | |
202d4966 | 896 | moduledata.dir = (moduledata.approved == CAN_SEND_NO) ? MODE_ADD : MODE_QUERY; |
f4b52a0a | 897 | |
0aa36c5f AC |
898 | call_hook(h_can_send, &moduledata); |
899 | ||
900 | return moduledata.approved; | |
212380e3 AC |
901 | } |
902 | ||
15484f02 BG |
903 | /* |
904 | * flood_attack_channel | |
905 | * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC | |
906 | * says NOTICE must not auto reply | |
55abcbb2 | 907 | * - pointer to source Client |
15484f02 BG |
908 | * - pointer to target channel |
909 | * output - 1 if target is under flood attack | |
910 | * side effects - check for flood attack on target chptr | |
911 | */ | |
912 | int | |
913 | flood_attack_channel(int p_or_n, struct Client *source_p, struct Channel *chptr, char *chname) | |
914 | { | |
915 | int delta; | |
916 | ||
917 | if(GlobalSetOptions.floodcount && MyClient(source_p)) | |
918 | { | |
919 | if((chptr->first_received_message_time + 1) < rb_current_time()) | |
920 | { | |
921 | delta = rb_current_time() - chptr->first_received_message_time; | |
922 | chptr->received_number_of_privmsgs -= delta; | |
923 | chptr->first_received_message_time = rb_current_time(); | |
924 | if(chptr->received_number_of_privmsgs <= 0) | |
925 | { | |
926 | chptr->received_number_of_privmsgs = 0; | |
927 | chptr->flood_noticed = 0; | |
928 | } | |
929 | } | |
930 | ||
931 | if((chptr->received_number_of_privmsgs >= GlobalSetOptions.floodcount) | |
932 | || chptr->flood_noticed) | |
933 | { | |
934 | if(chptr->flood_noticed == 0) | |
935 | { | |
936 | sendto_realops_snomask(SNO_BOTS, *chptr->chname == '&' ? L_ALL : L_NETWIDE, | |
937 | "Possible Flooder %s[%s@%s] on %s target: %s", | |
938 | source_p->name, source_p->username, | |
939 | source_p->orighost, | |
940 | source_p->servptr->name, chptr->chname); | |
941 | chptr->flood_noticed = 1; | |
942 | ||
943 | /* Add a bit of penalty */ | |
944 | chptr->received_number_of_privmsgs += 2; | |
945 | } | |
946 | if(MyClient(source_p) && (p_or_n != 1)) | |
947 | sendto_one(source_p, | |
948 | ":%s NOTICE %s :*** Message to %s throttled due to flooding", | |
949 | me.name, source_p->name, chptr->chname); | |
950 | return 1; | |
951 | } | |
952 | else | |
953 | chptr->received_number_of_privmsgs++; | |
954 | } | |
955 | ||
956 | return 0; | |
957 | } | |
958 | ||
212380e3 AC |
959 | /* find_bannickchange_channel() |
960 | * Input: client to check | |
961 | * Output: channel preventing nick change | |
962 | */ | |
963 | struct Channel * | |
964 | find_bannickchange_channel(struct Client *client_p) | |
965 | { | |
966 | struct Channel *chptr; | |
967 | struct membership *msptr; | |
330fc5c1 | 968 | rb_dlink_node *ptr; |
212380e3 AC |
969 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; |
970 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
971 | ||
972 | if (!MyClient(client_p)) | |
973 | return NULL; | |
974 | ||
b2f0da88 AC |
975 | rb_sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host); |
976 | rb_sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost); | |
212380e3 | 977 | |
5cefa1d6 | 978 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
979 | { |
980 | msptr = ptr->data; | |
981 | chptr = msptr->chptr; | |
982 | if (is_chanop_voiced(msptr)) | |
983 | continue; | |
984 | /* cached can_send */ | |
985 | if (msptr->bants == chptr->bants) | |
986 | { | |
987 | if (can_send_banned(msptr)) | |
988 | return chptr; | |
989 | } | |
765d839d | 990 | else if (is_banned(chptr, client_p, msptr, src_host, src_iphost, NULL) == CHFL_BAN |
212380e3 AC |
991 | || is_quieted(chptr, client_p, msptr, src_host, src_iphost) == CHFL_BAN) |
992 | return chptr; | |
993 | } | |
994 | return NULL; | |
995 | } | |
996 | ||
997 | /* void check_spambot_warning(struct Client *source_p) | |
998 | * Input: Client to check, channel name or NULL if this is a part. | |
999 | * Output: none | |
1000 | * Side-effects: Updates the client's oper_warn_count_down, warns the | |
1001 | * IRC operators if necessary, and updates join_leave_countdown as | |
1002 | * needed. | |
1003 | */ | |
1004 | void | |
1005 | check_spambot_warning(struct Client *source_p, const char *name) | |
1006 | { | |
1007 | int t_delta; | |
1008 | int decrement_count; | |
1009 | if((GlobalSetOptions.spam_num && | |
1010 | (source_p->localClient->join_leave_count >= GlobalSetOptions.spam_num))) | |
1011 | { | |
1012 | if(source_p->localClient->oper_warn_count_down > 0) | |
1013 | source_p->localClient->oper_warn_count_down--; | |
1014 | else | |
1015 | source_p->localClient->oper_warn_count_down = 0; | |
e0c1f4ec JT |
1016 | if(source_p->localClient->oper_warn_count_down == 0 && |
1017 | name != NULL) | |
212380e3 AC |
1018 | { |
1019 | /* Its already known as a possible spambot */ | |
e0c1f4ec JT |
1020 | sendto_realops_snomask(SNO_BOTS, L_NETWIDE, |
1021 | "User %s (%s@%s) trying to join %s is a possible spambot", | |
1022 | source_p->name, | |
1023 | source_p->username, source_p->orighost, name); | |
212380e3 AC |
1024 | source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN; |
1025 | } | |
1026 | } | |
1027 | else | |
1028 | { | |
1029 | if((t_delta = | |
e3354945 | 1030 | (rb_current_time() - source_p->localClient->last_leave_time)) > |
212380e3 AC |
1031 | JOIN_LEAVE_COUNT_EXPIRE_TIME) |
1032 | { | |
1033 | decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME); | |
981586df JT |
1034 | if(name != NULL) |
1035 | ; | |
1036 | else if(decrement_count > source_p->localClient->join_leave_count) | |
212380e3 AC |
1037 | source_p->localClient->join_leave_count = 0; |
1038 | else | |
1039 | source_p->localClient->join_leave_count -= decrement_count; | |
1040 | } | |
1041 | else | |
1042 | { | |
e3354945 | 1043 | if((rb_current_time() - |
212380e3 AC |
1044 | (source_p->localClient->last_join_time)) < GlobalSetOptions.spam_time) |
1045 | { | |
1046 | /* oh, its a possible spambot */ | |
1047 | source_p->localClient->join_leave_count++; | |
1048 | } | |
1049 | } | |
1050 | if(name != NULL) | |
e3354945 | 1051 | source_p->localClient->last_join_time = rb_current_time(); |
212380e3 | 1052 | else |
e3354945 | 1053 | source_p->localClient->last_leave_time = rb_current_time(); |
212380e3 AC |
1054 | } |
1055 | } | |
1056 | ||
1057 | /* check_splitmode() | |
1058 | * | |
1059 | * input - | |
1060 | * output - | |
1061 | * side effects - compares usercount and servercount against their split | |
1062 | * values and adjusts splitmode accordingly | |
1063 | */ | |
1064 | void | |
1065 | check_splitmode(void *unused) | |
1066 | { | |
1067 | if(splitchecking && (ConfigChannel.no_join_on_split || ConfigChannel.no_create_on_split)) | |
1068 | { | |
1069 | /* not split, we're being asked to check now because someone | |
1070 | * has left | |
1071 | */ | |
1072 | if(!splitmode) | |
1073 | { | |
1074 | if(eob_count < split_servers || Count.total < split_users) | |
1075 | { | |
1076 | splitmode = 1; | |
1077 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1078 | "Network split, activating splitmode"); | |
c608a061 | 1079 | check_splitmode_ev = rb_event_addish("check_splitmode", check_splitmode, NULL, 2); |
212380e3 AC |
1080 | } |
1081 | } | |
1082 | /* in splitmode, check whether its finished */ | |
1083 | else if(eob_count >= split_servers && Count.total >= split_users) | |
1084 | { | |
1085 | splitmode = 0; | |
1086 | ||
1087 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1088 | "Network rejoined, deactivating splitmode"); | |
1089 | ||
c608a061 | 1090 | rb_event_delete(check_splitmode_ev); |
6a309903 | 1091 | check_splitmode_ev = NULL; |
212380e3 AC |
1092 | } |
1093 | } | |
1094 | } | |
1095 | ||
1096 | ||
1097 | /* allocate_topic() | |
1098 | * | |
1099 | * input - channel to allocate topic for | |
1100 | * output - 1 on success, else 0 | |
1101 | * side effects - channel gets a topic allocated | |
1102 | */ | |
1103 | static void | |
1104 | allocate_topic(struct Channel *chptr) | |
1105 | { | |
1106 | void *ptr; | |
1107 | ||
1108 | if(chptr == NULL) | |
1109 | return; | |
1110 | ||
398b6a73 | 1111 | ptr = rb_bh_alloc(topic_heap); |
212380e3 AC |
1112 | |
1113 | /* Basically we allocate one large block for the topic and | |
1114 | * the topic info. We then split it up into two and shove it | |
55abcbb2 | 1115 | * in the chptr |
212380e3 AC |
1116 | */ |
1117 | chptr->topic = ptr; | |
1118 | chptr->topic_info = (char *) ptr + TOPICLEN + 1; | |
1119 | *chptr->topic = '\0'; | |
1120 | *chptr->topic_info = '\0'; | |
1121 | } | |
1122 | ||
1123 | /* free_topic() | |
1124 | * | |
1125 | * input - channel which has topic to free | |
1126 | * output - | |
1127 | * side effects - channels topic is free'd | |
1128 | */ | |
1129 | static void | |
1130 | free_topic(struct Channel *chptr) | |
1131 | { | |
1132 | void *ptr; | |
1133 | ||
1134 | if(chptr == NULL || chptr->topic == NULL) | |
1135 | return; | |
1136 | ||
1137 | /* This is safe for now - If you change allocate_topic you | |
1138 | * MUST change this as well | |
1139 | */ | |
1140 | ptr = chptr->topic; | |
398b6a73 | 1141 | rb_bh_free(topic_heap, ptr); |
212380e3 AC |
1142 | chptr->topic = NULL; |
1143 | chptr->topic_info = NULL; | |
1144 | } | |
1145 | ||
1146 | /* set_channel_topic() | |
1147 | * | |
1148 | * input - channel, topic to set, topic info and topic ts | |
1149 | * output - | |
1150 | * side effects - channels topic, topic info and TS are set. | |
1151 | */ | |
1152 | void | |
1153 | set_channel_topic(struct Channel *chptr, const char *topic, const char *topic_info, time_t topicts) | |
1154 | { | |
1155 | if(strlen(topic) > 0) | |
1156 | { | |
1157 | if(chptr->topic == NULL) | |
1158 | allocate_topic(chptr); | |
f427c8b0 VY |
1159 | rb_strlcpy(chptr->topic, topic, TOPICLEN + 1); |
1160 | rb_strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN); | |
212380e3 | 1161 | chptr->topic_time = topicts; |
14482679 AC |
1162 | |
1163 | if (ConfigChannel.strip_topic_colors) | |
1164 | strip_colour(chptr->topic); | |
212380e3 AC |
1165 | } |
1166 | else | |
1167 | { | |
1168 | if(chptr->topic != NULL) | |
1169 | free_topic(chptr); | |
1170 | chptr->topic_time = 0; | |
1171 | } | |
1172 | } | |
1173 | ||
3b8a6350 | 1174 | /* channel_modes() |
212380e3 AC |
1175 | * |
1176 | * inputs - pointer to channel | |
1177 | * - pointer to client | |
f1e35c19 JT |
1178 | * output - string with simple modes |
1179 | * side effects - result from previous calls overwritten | |
212380e3 AC |
1180 | * |
1181 | * Stolen from ShadowIRCd 4 --nenolod | |
1182 | */ | |
1183 | const char * | |
3b8a6350 | 1184 | channel_modes(struct Channel *chptr, struct Client *client_p) |
212380e3 AC |
1185 | { |
1186 | int i; | |
1187 | char buf1[BUFSIZE]; | |
1188 | char buf2[BUFSIZE]; | |
1189 | static char final[BUFSIZE]; | |
1190 | char *mbuf = buf1; | |
1191 | char *pbuf = buf2; | |
1192 | ||
1193 | *mbuf++ = '+'; | |
1194 | *pbuf = '\0'; | |
1195 | ||
efccc22c | 1196 | for (i = 0; i < 256; i++) |
be29ec79 AC |
1197 | { |
1198 | if(chmode_table[i].set_func == chm_hidden && (!IsOper(client_p) || !IsClient(client_p))) | |
1199 | continue; | |
3b8a6350 | 1200 | if(chptr->mode.mode & chmode_flags[i]) |
efccc22c | 1201 | *mbuf++ = i; |
be29ec79 | 1202 | } |
212380e3 | 1203 | |
3b8a6350 | 1204 | if(chptr->mode.limit) |
212380e3 AC |
1205 | { |
1206 | *mbuf++ = 'l'; | |
1207 | ||
f1e35c19 | 1208 | if(!IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1209 | pbuf += rb_sprintf(pbuf, " %d", chptr->mode.limit); |
212380e3 AC |
1210 | } |
1211 | ||
3b8a6350 | 1212 | if(*chptr->mode.key) |
212380e3 AC |
1213 | { |
1214 | *mbuf++ = 'k'; | |
1215 | ||
f1e35c19 | 1216 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1217 | pbuf += rb_sprintf(pbuf, " %s", chptr->mode.key); |
212380e3 AC |
1218 | } |
1219 | ||
3b8a6350 | 1220 | if(chptr->mode.join_num) |
212380e3 AC |
1221 | { |
1222 | *mbuf++ = 'j'; | |
1223 | ||
f1e35c19 | 1224 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 SB |
1225 | pbuf += rb_sprintf(pbuf, " %d:%d", chptr->mode.join_num, |
1226 | chptr->mode.join_time); | |
212380e3 AC |
1227 | } |
1228 | ||
2da6f6eb JT |
1229 | if(*chptr->mode.forward && |
1230 | (ConfigChannel.use_forward || !IsClient(client_p))) | |
212380e3 AC |
1231 | { |
1232 | *mbuf++ = 'f'; | |
1233 | ||
f1e35c19 | 1234 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
3b8a6350 | 1235 | pbuf += rb_sprintf(pbuf, " %s", chptr->mode.forward); |
212380e3 AC |
1236 | } |
1237 | ||
1238 | *mbuf = '\0'; | |
1239 | ||
f427c8b0 | 1240 | rb_strlcpy(final, buf1, sizeof final); |
1f9de103 | 1241 | rb_strlcat(final, buf2, sizeof final); |
212380e3 AC |
1242 | return final; |
1243 | } | |
1244 | ||
212380e3 AC |
1245 | /* void send_cap_mode_changes(struct Client *client_p, |
1246 | * struct Client *source_p, | |
1247 | * struct Channel *chptr, int cap, int nocap) | |
1248 | * Input: The client sending(client_p), the source client(source_p), | |
1249 | * the channel to send mode changes for(chptr) | |
1250 | * Output: None. | |
1251 | * Side-effects: Sends the appropriate mode changes to capable servers. | |
1252 | * | |
1253 | * Reverted back to my original design, except that we now keep a count | |
1254 | * of the number of servers which each combination as an optimisation, so | |
1255 | * the capabs combinations which are not needed are not worked out. -A1kmm | |
346fba92 AC |
1256 | * |
1257 | * Removed most code here because we don't need to be compatible with ircd | |
1258 | * 2.8.21+CSr and stuff. --nenolod | |
212380e3 AC |
1259 | */ |
1260 | void | |
1261 | send_cap_mode_changes(struct Client *client_p, struct Client *source_p, | |
1262 | struct Channel *chptr, struct ChModeChange mode_changes[], int mode_count) | |
1263 | { | |
1264 | static char modebuf[BUFSIZE]; | |
1265 | static char parabuf[BUFSIZE]; | |
1266 | int i, mbl, pbl, nc, mc, preflen, len; | |
1267 | char *pbuf; | |
1268 | const char *arg; | |
346fba92 | 1269 | int dir; |
212380e3 AC |
1270 | int arglen; |
1271 | ||
1272 | /* Now send to servers... */ | |
346fba92 AC |
1273 | mc = 0; |
1274 | nc = 0; | |
1275 | pbl = 0; | |
1276 | parabuf[0] = 0; | |
1277 | pbuf = parabuf; | |
1278 | dir = MODE_QUERY; | |
1279 | ||
1280 | mbl = preflen = rb_sprintf(modebuf, ":%s TMODE %ld %s ", | |
1281 | use_id(source_p), (long) chptr->channelts, | |
1282 | chptr->chname); | |
1283 | ||
1284 | /* loop the list of - modes we have */ | |
1285 | for (i = 0; i < mode_count; i++) | |
212380e3 | 1286 | { |
346fba92 AC |
1287 | /* if they dont support the cap we need, or they do support a cap they |
1288 | * cant have, then dont add it to the modebuf.. that way they wont see | |
1289 | * the mode | |
1290 | */ | |
1291 | if (mode_changes[i].letter == 0) | |
212380e3 AC |
1292 | continue; |
1293 | ||
346fba92 AC |
1294 | if (!EmptyString(mode_changes[i].id)) |
1295 | arg = mode_changes[i].id; | |
1296 | else | |
1297 | arg = mode_changes[i].arg; | |
212380e3 | 1298 | |
346fba92 | 1299 | if(arg) |
212380e3 | 1300 | { |
346fba92 | 1301 | arglen = strlen(arg); |
212380e3 | 1302 | |
346fba92 AC |
1303 | /* dont even think about it! --fl */ |
1304 | if(arglen > MODEBUFLEN - 5) | |
1305 | continue; | |
1306 | } | |
212380e3 | 1307 | |
346fba92 AC |
1308 | /* if we're creeping past the buf size, we need to send it and make |
1309 | * another line for the other modes | |
1310 | * XXX - this could give away server topology with uids being | |
1311 | * different lengths, but not much we can do, except possibly break | |
1312 | * them as if they were the longest of the nick or uid at all times, | |
1313 | * which even then won't work as we don't always know the uid -A1kmm. | |
1314 | */ | |
1315 | if(arg && ((mc == MAXMODEPARAMSSERV) || | |
1316 | ((mbl + pbl + arglen + 4) > (BUFSIZE - 3)))) | |
1317 | { | |
1318 | if(nc != 0) | |
51452a37 | 1319 | sendto_server(client_p, chptr, NOCAPS, NOCAPS, |
346fba92 AC |
1320 | "%s %s", modebuf, parabuf); |
1321 | nc = 0; | |
1322 | mc = 0; | |
1323 | ||
1324 | mbl = preflen; | |
1325 | pbl = 0; | |
1326 | pbuf = parabuf; | |
1327 | parabuf[0] = 0; | |
1328 | dir = MODE_QUERY; | |
1329 | } | |
212380e3 | 1330 | |
346fba92 AC |
1331 | if(dir != mode_changes[i].dir) |
1332 | { | |
1333 | modebuf[mbl++] = (mode_changes[i].dir == MODE_ADD) ? '+' : '-'; | |
1334 | dir = mode_changes[i].dir; | |
1335 | } | |
212380e3 | 1336 | |
346fba92 AC |
1337 | modebuf[mbl++] = mode_changes[i].letter; |
1338 | modebuf[mbl] = 0; | |
1339 | nc++; | |
212380e3 | 1340 | |
346fba92 AC |
1341 | if(arg != NULL) |
1342 | { | |
1343 | len = rb_sprintf(pbuf, "%s ", arg); | |
1344 | pbuf += len; | |
1345 | pbl += len; | |
1346 | mc++; | |
212380e3 | 1347 | } |
346fba92 | 1348 | } |
212380e3 | 1349 | |
346fba92 AC |
1350 | if(pbl && parabuf[pbl - 1] == ' ') |
1351 | parabuf[pbl - 1] = 0; | |
212380e3 | 1352 | |
346fba92 | 1353 | if(nc != 0) |
51452a37 | 1354 | sendto_server(client_p, chptr, NOCAPS, NOCAPS, "%s %s", modebuf, parabuf); |
212380e3 | 1355 | } |
dca9e552 | 1356 | |
346fba92 | 1357 | void |
dca9e552 JT |
1358 | resv_chan_forcepart(const char *name, const char *reason, int temp_time) |
1359 | { | |
1360 | rb_dlink_node *ptr; | |
1361 | rb_dlink_node *next_ptr; | |
1362 | struct Channel *chptr; | |
1363 | struct membership *msptr; | |
1364 | struct Client *target_p; | |
1365 | ||
1366 | if(!ConfigChannel.resv_forcepart) | |
1367 | return; | |
1368 | ||
1369 | /* for each user on our server in the channel list | |
1370 | * send them a PART, and notify opers. | |
1371 | */ | |
1372 | chptr = find_channel(name); | |
1373 | if(chptr != NULL) | |
1374 | { | |
1375 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head) | |
1376 | { | |
1377 | msptr = ptr->data; | |
1378 | target_p = msptr->client_p; | |
1379 | ||
1380 | if(IsExemptResv(target_p)) | |
1381 | continue; | |
1382 | ||
1383 | sendto_server(target_p, chptr, CAP_TS6, NOCAPS, | |
1384 | ":%s PART %s", target_p->id, chptr->chname); | |
1385 | ||
1386 | sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s", | |
1387 | target_p->name, target_p->username, | |
1388 | target_p->host, chptr->chname, target_p->name); | |
1389 | ||
1390 | remove_user_from_channel(msptr); | |
1391 | ||
1392 | /* notify opers & user they were removed from the channel */ | |
1393 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1394 | "Forced PART for %s!%s@%s from %s (%s)", | |
55abcbb2 | 1395 | target_p->name, target_p->username, |
dca9e552 JT |
1396 | target_p->host, name, reason); |
1397 | ||
1398 | if(temp_time > 0) | |
1399 | sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.", | |
1400 | name); | |
1401 | else | |
1402 | sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.", | |
1403 | name); | |
1404 | } | |
1405 | } | |
1406 | } |