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Commit | Line | Data |
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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * channel.c: Controls channels. | |
4 | * | |
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 | |
212380e3 AC |
23 | */ |
24 | ||
25 | #include "stdinc.h" | |
212380e3 | 26 | #include "channel.h" |
392ae75c | 27 | #include "chmode.h" |
212380e3 AC |
28 | #include "client.h" |
29 | #include "common.h" | |
30 | #include "hash.h" | |
31 | #include "hook.h" | |
4562c604 | 32 | #include "match.h" |
212380e3 AC |
33 | #include "ircd.h" |
34 | #include "numeric.h" | |
35 | #include "s_serv.h" /* captab */ | |
36 | #include "s_user.h" | |
37 | #include "send.h" | |
38 | #include "whowas.h" | |
39 | #include "s_conf.h" /* ConfigFileEntry, ConfigChannel */ | |
40 | #include "s_newconf.h" | |
4016731b | 41 | #include "logger.h" |
1c60de97 | 42 | #include "ipv4_from_ipv6.h" |
77d3d2db | 43 | #include "s_assert.h" |
212380e3 | 44 | |
18e4d421 | 45 | struct config_channel_entry ConfigChannel; |
c3d10343 | 46 | rb_dlink_list global_channel_list; |
b617afdc VY |
47 | static rb_bh *channel_heap; |
48 | static rb_bh *ban_heap; | |
49 | static rb_bh *topic_heap; | |
50 | static rb_bh *member_heap; | |
51 | ||
212380e3 AC |
52 | static void free_topic(struct Channel *chptr); |
53 | ||
54 | static int h_can_join; | |
0aa36c5f | 55 | static int h_can_send; |
749d8c11 | 56 | int h_get_channel_access; |
212380e3 AC |
57 | |
58 | /* init_channels() | |
59 | * | |
60 | * input - | |
61 | * output - | |
62 | * side effects - initialises the various blockheaps | |
63 | */ | |
64 | void | |
65 | init_channels(void) | |
66 | { | |
c608a061 AC |
67 | channel_heap = rb_bh_create(sizeof(struct Channel), CHANNEL_HEAP_SIZE, "channel_heap"); |
68 | ban_heap = rb_bh_create(sizeof(struct Ban), BAN_HEAP_SIZE, "ban_heap"); | |
69 | topic_heap = rb_bh_create(TOPICLEN + 1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE, "topic_heap"); | |
70 | member_heap = rb_bh_create(sizeof(struct membership), MEMBER_HEAP_SIZE, "member_heap"); | |
212380e3 AC |
71 | |
72 | h_can_join = register_hook("can_join"); | |
0aa36c5f | 73 | h_can_send = register_hook("can_send"); |
749d8c11 | 74 | h_get_channel_access = register_hook("get_channel_access"); |
212380e3 AC |
75 | } |
76 | ||
77 | /* | |
78 | * allocate_channel - Allocates a channel | |
79 | */ | |
80 | struct Channel * | |
81 | allocate_channel(const char *chname) | |
82 | { | |
83 | struct Channel *chptr; | |
398b6a73 | 84 | chptr = rb_bh_alloc(channel_heap); |
47a03750 | 85 | chptr->chname = rb_strdup(chname); |
212380e3 AC |
86 | return (chptr); |
87 | } | |
88 | ||
89 | void | |
90 | free_channel(struct Channel *chptr) | |
91 | { | |
637c4932 | 92 | rb_free(chptr->chname); |
78e6b731 | 93 | rb_free(chptr->mode_lock); |
398b6a73 | 94 | rb_bh_free(channel_heap, chptr); |
212380e3 AC |
95 | } |
96 | ||
97 | struct Ban * | |
765d839d | 98 | allocate_ban(const char *banstr, const char *who, const char *forward) |
212380e3 AC |
99 | { |
100 | struct Ban *bptr; | |
398b6a73 | 101 | bptr = rb_bh_alloc(ban_heap); |
47a03750 VY |
102 | bptr->banstr = rb_strdup(banstr); |
103 | bptr->who = rb_strdup(who); | |
765d839d | 104 | bptr->forward = forward ? rb_strdup(forward) : NULL; |
212380e3 AC |
105 | |
106 | return (bptr); | |
107 | } | |
108 | ||
109 | void | |
110 | free_ban(struct Ban *bptr) | |
111 | { | |
637c4932 VY |
112 | rb_free(bptr->banstr); |
113 | rb_free(bptr->who); | |
765d839d | 114 | rb_free(bptr->forward); |
398b6a73 | 115 | rb_bh_free(ban_heap, bptr); |
212380e3 AC |
116 | } |
117 | ||
27912fd4 AC |
118 | /* |
119 | * send_channel_join() | |
120 | * | |
121 | * input - channel to join, client joining. | |
122 | * output - none | |
123 | * side effects - none | |
124 | */ | |
125 | void | |
126 | send_channel_join(struct Channel *chptr, struct Client *client_p) | |
127 | { | |
128 | if (!IsClient(client_p)) | |
129 | return; | |
130 | ||
92052a5c AC |
131 | sendto_channel_local_with_capability(ALL_MEMBERS, NOCAPS, CLICAP_EXTENDED_JOIN, chptr, ":%s!%s@%s JOIN %s", |
132 | client_p->name, client_p->username, client_p->host, chptr->chname); | |
133 | ||
26e9dd93 | 134 | sendto_channel_local_with_capability(ALL_MEMBERS, CLICAP_EXTENDED_JOIN, NOCAPS, chptr, ":%s!%s@%s JOIN %s %s :%s", |
92052a5c AC |
135 | client_p->name, client_p->username, client_p->host, chptr->chname, |
136 | EmptyString(client_p->user->suser) ? "*" : client_p->user->suser, | |
26e9dd93 | 137 | client_p->info); |
c5bbc603 KB |
138 | |
139 | /* Send away message to away-notify enabled clients. */ | |
140 | if (client_p->user->away) | |
141 | sendto_channel_local_with_capability_butone(client_p, ALL_MEMBERS, CLICAP_AWAY_NOTIFY, NOCAPS, chptr, | |
142 | ":%s!%s@%s AWAY :%s", client_p->name, client_p->username, | |
143 | client_p->host, client_p->user->away); | |
27912fd4 | 144 | } |
212380e3 AC |
145 | |
146 | /* find_channel_membership() | |
147 | * | |
148 | * input - channel to find them in, client to find | |
149 | * output - membership of client in channel, else NULL | |
150 | * side effects - | |
151 | */ | |
152 | struct membership * | |
153 | find_channel_membership(struct Channel *chptr, struct Client *client_p) | |
154 | { | |
155 | struct membership *msptr; | |
330fc5c1 | 156 | rb_dlink_node *ptr; |
212380e3 AC |
157 | |
158 | if(!IsClient(client_p)) | |
159 | return NULL; | |
160 | ||
161 | /* Pick the most efficient list to use to be nice to things like | |
162 | * CHANSERV which could be in a large number of channels | |
163 | */ | |
330fc5c1 | 164 | if(rb_dlink_list_length(&chptr->members) < rb_dlink_list_length(&client_p->user->channel)) |
212380e3 | 165 | { |
5cefa1d6 | 166 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
167 | { |
168 | msptr = ptr->data; | |
169 | ||
170 | if(msptr->client_p == client_p) | |
171 | return msptr; | |
172 | } | |
173 | } | |
174 | else | |
175 | { | |
5cefa1d6 | 176 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
177 | { |
178 | msptr = ptr->data; | |
179 | ||
180 | if(msptr->chptr == chptr) | |
181 | return msptr; | |
182 | } | |
183 | } | |
184 | ||
185 | return NULL; | |
186 | } | |
187 | ||
188 | /* find_channel_status() | |
189 | * | |
190 | * input - membership to get status for, whether we can combine flags | |
191 | * output - flags of user on channel | |
192 | * side effects - | |
193 | */ | |
194 | const char * | |
195 | find_channel_status(struct membership *msptr, int combine) | |
196 | { | |
197 | static char buffer[3]; | |
198 | char *p; | |
199 | ||
200 | p = buffer; | |
201 | ||
202 | if(is_chanop(msptr)) | |
203 | { | |
204 | if(!combine) | |
205 | return "@"; | |
206 | *p++ = '@'; | |
207 | } | |
208 | ||
209 | if(is_voiced(msptr)) | |
210 | *p++ = '+'; | |
211 | ||
212 | *p = '\0'; | |
213 | return buffer; | |
214 | } | |
215 | ||
216 | /* add_user_to_channel() | |
217 | * | |
218 | * input - channel to add client to, client to add, channel flags | |
55abcbb2 | 219 | * output - |
212380e3 AC |
220 | * side effects - user is added to channel |
221 | */ | |
222 | void | |
223 | add_user_to_channel(struct Channel *chptr, struct Client *client_p, int flags) | |
224 | { | |
225 | struct membership *msptr; | |
226 | ||
227 | s_assert(client_p->user != NULL); | |
228 | if(client_p->user == NULL) | |
229 | return; | |
230 | ||
398b6a73 | 231 | msptr = rb_bh_alloc(member_heap); |
212380e3 AC |
232 | |
233 | msptr->chptr = chptr; | |
234 | msptr->client_p = client_p; | |
235 | msptr->flags = flags; | |
236 | ||
330fc5c1 AC |
237 | rb_dlinkAdd(msptr, &msptr->usernode, &client_p->user->channel); |
238 | rb_dlinkAdd(msptr, &msptr->channode, &chptr->members); | |
212380e3 AC |
239 | |
240 | if(MyClient(client_p)) | |
330fc5c1 | 241 | rb_dlinkAdd(msptr, &msptr->locchannode, &chptr->locmembers); |
212380e3 AC |
242 | } |
243 | ||
244 | /* remove_user_from_channel() | |
245 | * | |
246 | * input - membership pointer to remove from channel | |
247 | * output - | |
248 | * side effects - membership (thus user) is removed from channel | |
249 | */ | |
250 | void | |
251 | remove_user_from_channel(struct membership *msptr) | |
252 | { | |
253 | struct Client *client_p; | |
254 | struct Channel *chptr; | |
255 | s_assert(msptr != NULL); | |
256 | if(msptr == NULL) | |
257 | return; | |
258 | ||
259 | client_p = msptr->client_p; | |
260 | chptr = msptr->chptr; | |
261 | ||
330fc5c1 AC |
262 | rb_dlinkDelete(&msptr->usernode, &client_p->user->channel); |
263 | rb_dlinkDelete(&msptr->channode, &chptr->members); | |
212380e3 AC |
264 | |
265 | if(client_p->servptr == &me) | |
330fc5c1 | 266 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 267 | |
330fc5c1 | 268 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
269 | destroy_channel(chptr); |
270 | ||
398b6a73 | 271 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
272 | |
273 | return; | |
274 | } | |
275 | ||
276 | /* remove_user_from_channels() | |
277 | * | |
278 | * input - user to remove from all channels | |
279 | * output - | |
280 | * side effects - user is removed from all channels | |
281 | */ | |
282 | void | |
283 | remove_user_from_channels(struct Client *client_p) | |
284 | { | |
285 | struct Channel *chptr; | |
286 | struct membership *msptr; | |
330fc5c1 | 287 | rb_dlink_node *ptr; |
637c4932 | 288 | rb_dlink_node *next_ptr; |
212380e3 AC |
289 | |
290 | if(client_p == NULL) | |
291 | return; | |
292 | ||
637c4932 | 293 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->user->channel.head) |
212380e3 AC |
294 | { |
295 | msptr = ptr->data; | |
296 | chptr = msptr->chptr; | |
297 | ||
330fc5c1 | 298 | rb_dlinkDelete(&msptr->channode, &chptr->members); |
212380e3 AC |
299 | |
300 | if(client_p->servptr == &me) | |
330fc5c1 | 301 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 302 | |
330fc5c1 | 303 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
304 | destroy_channel(chptr); |
305 | ||
398b6a73 | 306 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
307 | } |
308 | ||
309 | client_p->user->channel.head = client_p->user->channel.tail = NULL; | |
310 | client_p->user->channel.length = 0; | |
311 | } | |
312 | ||
313 | /* invalidate_bancache_user() | |
314 | * | |
315 | * input - user to invalidate ban cache for | |
316 | * output - | |
317 | * side effects - ban cache is invalidated for all memberships of that user | |
318 | * to be used after a nick change | |
319 | */ | |
320 | void | |
321 | invalidate_bancache_user(struct Client *client_p) | |
322 | { | |
323 | struct membership *msptr; | |
330fc5c1 | 324 | rb_dlink_node *ptr; |
212380e3 AC |
325 | |
326 | if(client_p == NULL) | |
327 | return; | |
328 | ||
5cefa1d6 | 329 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
330 | { |
331 | msptr = ptr->data; | |
332 | msptr->bants = 0; | |
333 | msptr->flags &= ~CHFL_BANNED; | |
334 | } | |
335 | } | |
336 | ||
337 | /* check_channel_name() | |
338 | * | |
339 | * input - channel name | |
340 | * output - 1 if valid channel name, else 0 | |
341 | * side effects - | |
342 | */ | |
343 | int | |
344 | check_channel_name(const char *name) | |
345 | { | |
346 | s_assert(name != NULL); | |
347 | if(name == NULL) | |
348 | return 0; | |
349 | ||
350 | for (; *name; ++name) | |
351 | { | |
352 | if(!IsChanChar(*name)) | |
353 | return 0; | |
354 | } | |
355 | ||
356 | return 1; | |
357 | } | |
358 | ||
359 | /* free_channel_list() | |
360 | * | |
330fc5c1 | 361 | * input - rb_dlink list to free |
212380e3 AC |
362 | * output - |
363 | * side effects - list of b/e/I modes is cleared | |
364 | */ | |
365 | void | |
330fc5c1 | 366 | free_channel_list(rb_dlink_list * list) |
212380e3 | 367 | { |
330fc5c1 | 368 | rb_dlink_node *ptr; |
637c4932 | 369 | rb_dlink_node *next_ptr; |
212380e3 AC |
370 | struct Ban *actualBan; |
371 | ||
637c4932 | 372 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
373 | { |
374 | actualBan = ptr->data; | |
375 | free_ban(actualBan); | |
376 | } | |
377 | ||
378 | list->head = list->tail = NULL; | |
379 | list->length = 0; | |
380 | } | |
381 | ||
382 | /* destroy_channel() | |
383 | * | |
384 | * input - channel to destroy | |
385 | * output - | |
386 | * side effects - channel is obliterated | |
387 | */ | |
388 | void | |
389 | destroy_channel(struct Channel *chptr) | |
390 | { | |
637c4932 | 391 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 392 | |
637c4932 | 393 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) |
212380e3 AC |
394 | { |
395 | del_invite(chptr, ptr->data); | |
396 | } | |
397 | ||
398 | /* free all bans/exceptions/denies */ | |
399 | free_channel_list(&chptr->banlist); | |
400 | free_channel_list(&chptr->exceptlist); | |
401 | free_channel_list(&chptr->invexlist); | |
fea1ad52 | 402 | free_channel_list(&chptr->quietlist); |
212380e3 AC |
403 | |
404 | /* Free the topic */ | |
405 | free_topic(chptr); | |
406 | ||
330fc5c1 | 407 | rb_dlinkDelete(&chptr->node, &global_channel_list); |
212380e3 AC |
408 | del_from_channel_hash(chptr->chname, chptr); |
409 | free_channel(chptr); | |
410 | } | |
411 | ||
412 | /* channel_pub_or_secret() | |
413 | * | |
414 | * input - channel | |
415 | * output - "=" if public, "@" if secret, else "*" | |
416 | * side effects - | |
417 | */ | |
418 | static const char * | |
419 | channel_pub_or_secret(struct Channel *chptr) | |
420 | { | |
421 | if(PubChannel(chptr)) | |
422 | return ("="); | |
423 | else if(SecretChannel(chptr)) | |
424 | return ("@"); | |
425 | return ("*"); | |
426 | } | |
427 | ||
428 | /* channel_member_names() | |
429 | * | |
430 | * input - channel to list, client to list to, show endofnames | |
431 | * output - | |
432 | * side effects - client is given list of users on channel | |
433 | */ | |
434 | void | |
435 | channel_member_names(struct Channel *chptr, struct Client *client_p, int show_eon) | |
436 | { | |
437 | struct membership *msptr; | |
438 | struct Client *target_p; | |
330fc5c1 | 439 | rb_dlink_node *ptr; |
212380e3 AC |
440 | char lbuf[BUFSIZE]; |
441 | char *t; | |
442 | int mlen; | |
443 | int tlen; | |
444 | int cur_len; | |
445 | int is_member; | |
446 | int stack = IsCapable(client_p, CLICAP_MULTI_PREFIX); | |
447 | ||
448 | if(ShowChannel(client_p, chptr)) | |
449 | { | |
450 | is_member = IsMember(client_p, chptr); | |
451 | ||
5203cba5 | 452 | cur_len = mlen = sprintf(lbuf, form_str(RPL_NAMREPLY), |
212380e3 AC |
453 | me.name, client_p->name, |
454 | channel_pub_or_secret(chptr), chptr->chname); | |
455 | ||
456 | t = lbuf + cur_len; | |
457 | ||
5cefa1d6 | 458 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
459 | { |
460 | msptr = ptr->data; | |
461 | target_p = msptr->client_p; | |
462 | ||
463 | if(IsInvisible(target_p) && !is_member) | |
464 | continue; | |
465 | ||
1b54aa5c | 466 | if (IsCapable(client_p, CLICAP_USERHOST_IN_NAMES)) |
212380e3 | 467 | { |
1b54aa5c MT |
468 | /* space, possible "@+" prefix */ |
469 | if (cur_len + strlen(target_p->name) + strlen(target_p->username) + strlen(target_p->host) + 5 >= BUFSIZE - 5) | |
470 | { | |
471 | *(t - 1) = '\0'; | |
472 | sendto_one(client_p, "%s", lbuf); | |
473 | cur_len = mlen; | |
474 | t = lbuf + mlen; | |
475 | } | |
476 | ||
5203cba5 | 477 | tlen = sprintf(t, "%s%s!%s@%s ", find_channel_status(msptr, stack), |
1b54aa5c MT |
478 | target_p->name, target_p->username, target_p->host); |
479 | } | |
480 | else | |
481 | { | |
482 | /* space, possible "@+" prefix */ | |
483 | if(cur_len + strlen(target_p->name) + 3 >= BUFSIZE - 3) | |
484 | { | |
485 | *(t - 1) = '\0'; | |
486 | sendto_one(client_p, "%s", lbuf); | |
487 | cur_len = mlen; | |
488 | t = lbuf + mlen; | |
489 | } | |
490 | ||
5203cba5 | 491 | tlen = sprintf(t, "%s%s ", find_channel_status(msptr, stack), |
1b54aa5c | 492 | target_p->name); |
212380e3 | 493 | } |
212380e3 AC |
494 | |
495 | cur_len += tlen; | |
496 | t += tlen; | |
497 | } | |
498 | ||
499 | /* The old behaviour here was to always output our buffer, | |
500 | * even if there are no clients we can show. This happens | |
501 | * when a client does "NAMES" with no parameters, and all | |
502 | * the clients on a -sp channel are +i. I dont see a good | |
503 | * reason for keeping that behaviour, as it just wastes | |
504 | * bandwidth. --anfl | |
505 | */ | |
506 | if(cur_len != mlen) | |
507 | { | |
508 | *(t - 1) = '\0'; | |
509 | sendto_one(client_p, "%s", lbuf); | |
510 | } | |
511 | } | |
512 | ||
513 | if(show_eon) | |
514 | sendto_one(client_p, form_str(RPL_ENDOFNAMES), | |
515 | me.name, client_p->name, chptr->chname); | |
516 | } | |
517 | ||
518 | /* del_invite() | |
519 | * | |
520 | * input - channel to remove invite from, client to remove | |
521 | * output - | |
522 | * side effects - user is removed from invite list, if exists | |
523 | */ | |
524 | void | |
525 | del_invite(struct Channel *chptr, struct Client *who) | |
526 | { | |
330fc5c1 AC |
527 | rb_dlinkFindDestroy(who, &chptr->invites); |
528 | rb_dlinkFindDestroy(chptr, &who->user->invited); | |
212380e3 AC |
529 | } |
530 | ||
a14de124 | 531 | /* is_banned_list() |
212380e3 | 532 | * |
a14de124 JT |
533 | * input - channel to check bans for, ban list (banlist or quietlist), |
534 | * user to check bans against, optional prebuilt buffers, | |
535 | * optional forward channel pointer | |
212380e3 AC |
536 | * output - 1 if banned, else 0 |
537 | * side effects - | |
538 | */ | |
a14de124 JT |
539 | static int |
540 | is_banned_list(struct Channel *chptr, rb_dlink_list *list, | |
541 | struct Client *who, struct membership *msptr, | |
542 | const char *s, const char *s2, const char **forward) | |
212380e3 AC |
543 | { |
544 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
545 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
546 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
1c60de97 | 547 | char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6]; |
212380e3 | 548 | char *s3 = NULL; |
1c60de97 JT |
549 | char *s4 = NULL; |
550 | struct sockaddr_in ip4; | |
330fc5c1 | 551 | rb_dlink_node *ptr; |
212380e3 AC |
552 | struct Ban *actualBan = NULL; |
553 | struct Ban *actualExcept = NULL; | |
554 | ||
555 | if(!MyClient(who)) | |
556 | return 0; | |
557 | ||
558 | /* if the buffers havent been built, do it here */ | |
559 | if(s == NULL) | |
560 | { | |
5203cba5 VI |
561 | sprintf(src_host, "%s!%s@%s", who->name, who->username, who->host); |
562 | sprintf(src_iphost, "%s!%s@%s", who->name, who->username, who->sockhost); | |
212380e3 AC |
563 | |
564 | s = src_host; | |
565 | s2 = src_iphost; | |
566 | } | |
567 | if(who->localClient->mangledhost != NULL) | |
568 | { | |
569 | /* if host mangling mode enabled, also check their real host */ | |
570 | if(!strcmp(who->host, who->localClient->mangledhost)) | |
571 | { | |
5203cba5 | 572 | sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->orighost); |
212380e3 AC |
573 | s3 = src_althost; |
574 | } | |
575 | /* if host mangling mode not enabled and no other spoof, | |
576 | * also check the mangled form of their host */ | |
577 | else if (!IsDynSpoof(who)) | |
578 | { | |
5203cba5 | 579 | sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->localClient->mangledhost); |
212380e3 AC |
580 | s3 = src_althost; |
581 | } | |
582 | } | |
1c60de97 JT |
583 | #ifdef RB_IPV6 |
584 | if(who->localClient->ip.ss_family == AF_INET6 && | |
585 | ipv4_from_ipv6((const struct sockaddr_in6 *)&who->localClient->ip, &ip4)) | |
586 | { | |
5203cba5 | 587 | sprintf(src_ip4host, "%s!%s@", who->name, who->username); |
1c60de97 JT |
588 | s4 = src_ip4host + strlen(src_ip4host); |
589 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
590 | s4, src_ip4host + sizeof src_ip4host - s4); | |
591 | s4 = src_ip4host; | |
592 | } | |
593 | #endif | |
212380e3 | 594 | |
a14de124 | 595 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
596 | { |
597 | actualBan = ptr->data; | |
598 | if(match(actualBan->banstr, s) || | |
599 | match(actualBan->banstr, s2) || | |
600 | match_cidr(actualBan->banstr, s2) || | |
601 | match_extban(actualBan->banstr, who, chptr, CHFL_BAN) || | |
1c60de97 JT |
602 | (s3 != NULL && match(actualBan->banstr, s3)) |
603 | #ifdef RB_IPV6 | |
604 | || | |
605 | (s4 != NULL && (match(actualBan->banstr, s4) || match_cidr(actualBan->banstr, s4))) | |
606 | #endif | |
607 | ) | |
212380e3 AC |
608 | break; |
609 | else | |
610 | actualBan = NULL; | |
611 | } | |
612 | ||
613 | if((actualBan != NULL) && ConfigChannel.use_except) | |
614 | { | |
5cefa1d6 | 615 | RB_DLINK_FOREACH(ptr, chptr->exceptlist.head) |
212380e3 AC |
616 | { |
617 | actualExcept = ptr->data; | |
618 | ||
619 | /* theyre exempted.. */ | |
620 | if(match(actualExcept->banstr, s) || | |
621 | match(actualExcept->banstr, s2) || | |
622 | match_cidr(actualExcept->banstr, s2) || | |
623 | match_extban(actualExcept->banstr, who, chptr, CHFL_EXCEPTION) || | |
624 | (s3 != NULL && match(actualExcept->banstr, s3))) | |
625 | { | |
626 | /* cache the fact theyre not banned */ | |
627 | if(msptr != NULL) | |
628 | { | |
629 | msptr->bants = chptr->bants; | |
630 | msptr->flags &= ~CHFL_BANNED; | |
631 | } | |
632 | ||
633 | return CHFL_EXCEPTION; | |
634 | } | |
635 | } | |
636 | } | |
637 | ||
638 | /* cache the banned/not banned status */ | |
639 | if(msptr != NULL) | |
640 | { | |
641 | msptr->bants = chptr->bants; | |
642 | ||
643 | if(actualBan != NULL) | |
644 | { | |
645 | msptr->flags |= CHFL_BANNED; | |
646 | return CHFL_BAN; | |
647 | } | |
648 | else | |
649 | { | |
650 | msptr->flags &= ~CHFL_BANNED; | |
651 | return 0; | |
652 | } | |
653 | } | |
654 | ||
765d839d EM |
655 | if (actualBan && actualBan->forward && forward) |
656 | *forward = actualBan->forward; | |
657 | ||
212380e3 AC |
658 | return ((actualBan ? CHFL_BAN : 0)); |
659 | } | |
660 | ||
a14de124 JT |
661 | /* is_banned() |
662 | * | |
663 | * input - channel to check bans for, user to check bans against | |
664 | * optional prebuilt buffers, optional forward channel pointer | |
665 | * output - 1 if banned, else 0 | |
666 | * side effects - | |
667 | */ | |
668 | int | |
669 | is_banned(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
670 | const char *s, const char *s2, const char **forward) | |
671 | { | |
2f9687c4 AC |
672 | if (chptr->last_checked_client != NULL && |
673 | who == chptr->last_checked_client && | |
674 | chptr->last_checked_type == CHFL_BAN && | |
1e8138af | 675 | chptr->last_checked_ts > chptr->bants) |
2f9687c4 AC |
676 | return chptr->last_checked_result; |
677 | ||
bcbc6bd9 | 678 | chptr->last_checked_client = who; |
2f9687c4 AC |
679 | chptr->last_checked_type = CHFL_BAN; |
680 | chptr->last_checked_result = is_banned_list(chptr, &chptr->banlist, who, msptr, s, s2, forward); | |
681 | chptr->last_checked_ts = rb_current_time(); | |
682 | ||
683 | return chptr->last_checked_result; | |
a14de124 JT |
684 | } |
685 | ||
212380e3 AC |
686 | /* is_quieted() |
687 | * | |
688 | * input - channel to check bans for, user to check bans against | |
689 | * optional prebuilt buffers | |
690 | * output - 1 if banned, else 0 | |
691 | * side effects - | |
692 | */ | |
693 | int | |
694 | is_quieted(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
695 | const char *s, const char *s2) | |
696 | { | |
2f9687c4 AC |
697 | if (chptr->last_checked_client != NULL && |
698 | who == chptr->last_checked_client && | |
699 | chptr->last_checked_type == CHFL_QUIET && | |
1e8138af | 700 | chptr->last_checked_ts > chptr->bants) |
2f9687c4 AC |
701 | return chptr->last_checked_result; |
702 | ||
bcbc6bd9 | 703 | chptr->last_checked_client = who; |
2f9687c4 AC |
704 | chptr->last_checked_type = CHFL_QUIET; |
705 | chptr->last_checked_result = is_banned_list(chptr, &chptr->quietlist, who, msptr, s, s2, NULL); | |
706 | chptr->last_checked_ts = rb_current_time(); | |
707 | ||
708 | return chptr->last_checked_result; | |
212380e3 AC |
709 | } |
710 | ||
711 | /* can_join() | |
712 | * | |
713 | * input - client to check, channel to check for, key | |
765d839d | 714 | * output - reason for not being able to join, else 0, channel name to forward to |
212380e3 | 715 | * side effects - |
a63f7af7 | 716 | * caveats - this function should only be called on a local user. |
212380e3 AC |
717 | */ |
718 | int | |
fe74401b | 719 | can_join(struct Client *source_p, struct Channel *chptr, const char *key, const char **forward) |
212380e3 | 720 | { |
330fc5c1 AC |
721 | rb_dlink_node *invite = NULL; |
722 | rb_dlink_node *ptr; | |
212380e3 AC |
723 | struct Ban *invex = NULL; |
724 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
725 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
726 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
727 | int use_althost = 0; | |
1ebf4db4 | 728 | int i = 0; |
212380e3 AC |
729 | hook_data_channel moduledata; |
730 | ||
731 | s_assert(source_p->localClient != NULL); | |
732 | ||
8bb19bd7 AC |
733 | moduledata.client = source_p; |
734 | moduledata.chptr = chptr; | |
735 | moduledata.approved = 0; | |
736 | ||
5203cba5 VI |
737 | sprintf(src_host, "%s!%s@%s", source_p->name, source_p->username, source_p->host); |
738 | sprintf(src_iphost, "%s!%s@%s", source_p->name, source_p->username, source_p->sockhost); | |
212380e3 AC |
739 | if(source_p->localClient->mangledhost != NULL) |
740 | { | |
741 | /* if host mangling mode enabled, also check their real host */ | |
742 | if(!strcmp(source_p->host, source_p->localClient->mangledhost)) | |
743 | { | |
5203cba5 | 744 | sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->orighost); |
212380e3 AC |
745 | use_althost = 1; |
746 | } | |
747 | /* if host mangling mode not enabled and no other spoof, | |
748 | * also check the mangled form of their host */ | |
749 | else if (!IsDynSpoof(source_p)) | |
750 | { | |
5203cba5 | 751 | sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->localClient->mangledhost); |
212380e3 AC |
752 | use_althost = 1; |
753 | } | |
754 | } | |
755 | ||
765d839d | 756 | if((is_banned(chptr, source_p, NULL, src_host, src_iphost, forward)) == CHFL_BAN) |
8bb19bd7 AC |
757 | { |
758 | moduledata.approved = ERR_BANNEDFROMCHAN; | |
759 | goto finish_join_check; | |
760 | } | |
212380e3 | 761 | |
765d839d EM |
762 | if(*chptr->mode.key && (EmptyString(key) || irccmp(chptr->mode.key, key))) |
763 | { | |
764 | moduledata.approved = ERR_BADCHANNELKEY; | |
765 | goto finish_join_check; | |
766 | } | |
767 | ||
768 | /* All checks from this point on will forward... */ | |
769 | if(forward) | |
770 | *forward = chptr->mode.forward; | |
771 | ||
212380e3 AC |
772 | if(chptr->mode.mode & MODE_INVITEONLY) |
773 | { | |
5cefa1d6 | 774 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
212380e3 | 775 | { |
1ebf4db4 | 776 | if(invite->data == chptr) |
212380e3 AC |
777 | break; |
778 | } | |
1ebf4db4 | 779 | if(invite == NULL) |
212380e3 AC |
780 | { |
781 | if(!ConfigChannel.use_invex) | |
8bb19bd7 | 782 | moduledata.approved = ERR_INVITEONLYCHAN; |
5cefa1d6 | 783 | RB_DLINK_FOREACH(ptr, chptr->invexlist.head) |
212380e3 AC |
784 | { |
785 | invex = ptr->data; | |
786 | if(match(invex->banstr, src_host) | |
787 | || match(invex->banstr, src_iphost) | |
788 | || match_cidr(invex->banstr, src_iphost) | |
789 | || match_extban(invex->banstr, source_p, chptr, CHFL_INVEX) | |
790 | || (use_althost && match(invex->banstr, src_althost))) | |
791 | break; | |
792 | } | |
793 | if(ptr == NULL) | |
8bb19bd7 | 794 | moduledata.approved = ERR_INVITEONLYCHAN; |
212380e3 AC |
795 | } |
796 | } | |
797 | ||
212380e3 | 798 | if(chptr->mode.limit && |
330fc5c1 | 799 | rb_dlink_list_length(&chptr->members) >= (unsigned long) chptr->mode.limit) |
1ebf4db4 | 800 | i = ERR_CHANNELISFULL; |
212380e3 | 801 | if(chptr->mode.mode & MODE_REGONLY && EmptyString(source_p->user->suser)) |
1ebf4db4 | 802 | i = ERR_NEEDREGGEDNICK; |
212380e3 | 803 | /* join throttling stuff --nenolod */ |
1ebf4db4 | 804 | else if(chptr->mode.join_num > 0 && chptr->mode.join_time > 0) |
212380e3 | 805 | { |
55abcbb2 | 806 | if ((rb_current_time() - chptr->join_delta <= |
212380e3 AC |
807 | chptr->mode.join_time) && (chptr->join_count >= |
808 | chptr->mode.join_num)) | |
1ebf4db4 JT |
809 | i = ERR_THROTTLE; |
810 | } | |
811 | ||
812 | /* allow /invite to override +l/+r/+j also -- jilles */ | |
813 | if (i != 0 && invite == NULL) | |
814 | { | |
5cefa1d6 | 815 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
1ebf4db4 JT |
816 | { |
817 | if(invite->data == chptr) | |
818 | break; | |
819 | } | |
820 | if (invite == NULL) | |
8bb19bd7 | 821 | moduledata.approved = i; |
212380e3 AC |
822 | } |
823 | ||
8bb19bd7 | 824 | finish_join_check: |
212380e3 AC |
825 | call_hook(h_can_join, &moduledata); |
826 | ||
827 | return moduledata.approved; | |
828 | } | |
829 | ||
830 | /* can_send() | |
831 | * | |
832 | * input - user to check in channel, membership pointer | |
833 | * output - whether can explicitly send or not, else CAN_SEND_NONOP | |
834 | * side effects - | |
835 | */ | |
836 | int | |
837 | can_send(struct Channel *chptr, struct Client *source_p, struct membership *msptr) | |
838 | { | |
0aa36c5f AC |
839 | hook_data_channel_approval moduledata; |
840 | ||
841 | moduledata.approved = CAN_SEND_NONOP; | |
202d4966 | 842 | moduledata.dir = MODE_QUERY; |
0aa36c5f | 843 | |
212380e3 AC |
844 | if(IsServer(source_p) || IsService(source_p)) |
845 | return CAN_SEND_OPV; | |
846 | ||
847 | if(MyClient(source_p) && hash_find_resv(chptr->chname) && | |
848 | !IsOper(source_p) && !IsExemptResv(source_p)) | |
0aa36c5f | 849 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
850 | |
851 | if(msptr == NULL) | |
852 | { | |
853 | msptr = find_channel_membership(chptr, source_p); | |
854 | ||
855 | if(msptr == NULL) | |
856 | { | |
857 | /* if its +m or +n and theyre not in the channel, | |
858 | * they cant send. we dont check bans here because | |
859 | * theres no possibility of caching them --fl | |
860 | */ | |
861 | if(chptr->mode.mode & MODE_NOPRIVMSGS || chptr->mode.mode & MODE_MODERATED) | |
0aa36c5f | 862 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 863 | else |
0aa36c5f | 864 | moduledata.approved = CAN_SEND_NONOP; |
b697041e AC |
865 | |
866 | return moduledata.approved; | |
212380e3 AC |
867 | } |
868 | } | |
869 | ||
212380e3 | 870 | if(chptr->mode.mode & MODE_MODERATED) |
0aa36c5f | 871 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
872 | |
873 | if(MyClient(source_p)) | |
874 | { | |
875 | /* cached can_send */ | |
876 | if(msptr->bants == chptr->bants) | |
877 | { | |
878 | if(can_send_banned(msptr)) | |
0aa36c5f | 879 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 880 | } |
765d839d | 881 | else if(is_banned(chptr, source_p, msptr, NULL, NULL, NULL) == CHFL_BAN |
212380e3 | 882 | || is_quieted(chptr, source_p, msptr, NULL, NULL) == CHFL_BAN) |
0aa36c5f | 883 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
884 | } |
885 | ||
e06988c6 AC |
886 | if(is_chanop_voiced(msptr)) |
887 | moduledata.approved = CAN_SEND_OPV; | |
888 | ||
f4b52a0a EM |
889 | moduledata.client = source_p; |
890 | moduledata.chptr = msptr->chptr; | |
891 | moduledata.msptr = msptr; | |
892 | moduledata.target = NULL; | |
202d4966 | 893 | moduledata.dir = (moduledata.approved == CAN_SEND_NO) ? MODE_ADD : MODE_QUERY; |
f4b52a0a | 894 | |
0aa36c5f AC |
895 | call_hook(h_can_send, &moduledata); |
896 | ||
897 | return moduledata.approved; | |
212380e3 AC |
898 | } |
899 | ||
15484f02 BG |
900 | /* |
901 | * flood_attack_channel | |
902 | * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC | |
903 | * says NOTICE must not auto reply | |
55abcbb2 | 904 | * - pointer to source Client |
15484f02 BG |
905 | * - pointer to target channel |
906 | * output - 1 if target is under flood attack | |
907 | * side effects - check for flood attack on target chptr | |
908 | */ | |
909 | int | |
910 | flood_attack_channel(int p_or_n, struct Client *source_p, struct Channel *chptr, char *chname) | |
911 | { | |
912 | int delta; | |
913 | ||
914 | if(GlobalSetOptions.floodcount && MyClient(source_p)) | |
915 | { | |
916 | if((chptr->first_received_message_time + 1) < rb_current_time()) | |
917 | { | |
918 | delta = rb_current_time() - chptr->first_received_message_time; | |
919 | chptr->received_number_of_privmsgs -= delta; | |
920 | chptr->first_received_message_time = rb_current_time(); | |
921 | if(chptr->received_number_of_privmsgs <= 0) | |
922 | { | |
923 | chptr->received_number_of_privmsgs = 0; | |
924 | chptr->flood_noticed = 0; | |
925 | } | |
926 | } | |
927 | ||
928 | if((chptr->received_number_of_privmsgs >= GlobalSetOptions.floodcount) | |
929 | || chptr->flood_noticed) | |
930 | { | |
931 | if(chptr->flood_noticed == 0) | |
932 | { | |
933 | sendto_realops_snomask(SNO_BOTS, *chptr->chname == '&' ? L_ALL : L_NETWIDE, | |
934 | "Possible Flooder %s[%s@%s] on %s target: %s", | |
935 | source_p->name, source_p->username, | |
936 | source_p->orighost, | |
937 | source_p->servptr->name, chptr->chname); | |
938 | chptr->flood_noticed = 1; | |
939 | ||
940 | /* Add a bit of penalty */ | |
941 | chptr->received_number_of_privmsgs += 2; | |
942 | } | |
943 | if(MyClient(source_p) && (p_or_n != 1)) | |
944 | sendto_one(source_p, | |
945 | ":%s NOTICE %s :*** Message to %s throttled due to flooding", | |
946 | me.name, source_p->name, chptr->chname); | |
947 | return 1; | |
948 | } | |
949 | else | |
950 | chptr->received_number_of_privmsgs++; | |
951 | } | |
952 | ||
953 | return 0; | |
954 | } | |
955 | ||
212380e3 AC |
956 | /* find_bannickchange_channel() |
957 | * Input: client to check | |
958 | * Output: channel preventing nick change | |
959 | */ | |
960 | struct Channel * | |
961 | find_bannickchange_channel(struct Client *client_p) | |
962 | { | |
963 | struct Channel *chptr; | |
964 | struct membership *msptr; | |
330fc5c1 | 965 | rb_dlink_node *ptr; |
212380e3 AC |
966 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; |
967 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
968 | ||
969 | if (!MyClient(client_p)) | |
970 | return NULL; | |
971 | ||
5203cba5 VI |
972 | sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host); |
973 | sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost); | |
212380e3 | 974 | |
5cefa1d6 | 975 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
976 | { |
977 | msptr = ptr->data; | |
978 | chptr = msptr->chptr; | |
979 | if (is_chanop_voiced(msptr)) | |
980 | continue; | |
981 | /* cached can_send */ | |
982 | if (msptr->bants == chptr->bants) | |
983 | { | |
984 | if (can_send_banned(msptr)) | |
985 | return chptr; | |
986 | } | |
765d839d | 987 | else if (is_banned(chptr, client_p, msptr, src_host, src_iphost, NULL) == CHFL_BAN |
212380e3 AC |
988 | || is_quieted(chptr, client_p, msptr, src_host, src_iphost) == CHFL_BAN) |
989 | return chptr; | |
990 | } | |
991 | return NULL; | |
992 | } | |
993 | ||
994 | /* void check_spambot_warning(struct Client *source_p) | |
995 | * Input: Client to check, channel name or NULL if this is a part. | |
996 | * Output: none | |
997 | * Side-effects: Updates the client's oper_warn_count_down, warns the | |
998 | * IRC operators if necessary, and updates join_leave_countdown as | |
999 | * needed. | |
1000 | */ | |
1001 | void | |
1002 | check_spambot_warning(struct Client *source_p, const char *name) | |
1003 | { | |
1004 | int t_delta; | |
1005 | int decrement_count; | |
1006 | if((GlobalSetOptions.spam_num && | |
1007 | (source_p->localClient->join_leave_count >= GlobalSetOptions.spam_num))) | |
1008 | { | |
1009 | if(source_p->localClient->oper_warn_count_down > 0) | |
1010 | source_p->localClient->oper_warn_count_down--; | |
1011 | else | |
1012 | source_p->localClient->oper_warn_count_down = 0; | |
e0c1f4ec JT |
1013 | if(source_p->localClient->oper_warn_count_down == 0 && |
1014 | name != NULL) | |
212380e3 AC |
1015 | { |
1016 | /* Its already known as a possible spambot */ | |
e0c1f4ec JT |
1017 | sendto_realops_snomask(SNO_BOTS, L_NETWIDE, |
1018 | "User %s (%s@%s) trying to join %s is a possible spambot", | |
1019 | source_p->name, | |
1020 | source_p->username, source_p->orighost, name); | |
212380e3 AC |
1021 | source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN; |
1022 | } | |
1023 | } | |
1024 | else | |
1025 | { | |
1026 | if((t_delta = | |
e3354945 | 1027 | (rb_current_time() - source_p->localClient->last_leave_time)) > |
212380e3 AC |
1028 | JOIN_LEAVE_COUNT_EXPIRE_TIME) |
1029 | { | |
1030 | decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME); | |
981586df JT |
1031 | if(name != NULL) |
1032 | ; | |
1033 | else if(decrement_count > source_p->localClient->join_leave_count) | |
212380e3 AC |
1034 | source_p->localClient->join_leave_count = 0; |
1035 | else | |
1036 | source_p->localClient->join_leave_count -= decrement_count; | |
1037 | } | |
1038 | else | |
1039 | { | |
e3354945 | 1040 | if((rb_current_time() - |
212380e3 AC |
1041 | (source_p->localClient->last_join_time)) < GlobalSetOptions.spam_time) |
1042 | { | |
1043 | /* oh, its a possible spambot */ | |
1044 | source_p->localClient->join_leave_count++; | |
1045 | } | |
1046 | } | |
1047 | if(name != NULL) | |
e3354945 | 1048 | source_p->localClient->last_join_time = rb_current_time(); |
212380e3 | 1049 | else |
e3354945 | 1050 | source_p->localClient->last_leave_time = rb_current_time(); |
212380e3 AC |
1051 | } |
1052 | } | |
1053 | ||
1054 | /* check_splitmode() | |
1055 | * | |
1056 | * input - | |
1057 | * output - | |
1058 | * side effects - compares usercount and servercount against their split | |
1059 | * values and adjusts splitmode accordingly | |
1060 | */ | |
1061 | void | |
1062 | check_splitmode(void *unused) | |
1063 | { | |
1064 | if(splitchecking && (ConfigChannel.no_join_on_split || ConfigChannel.no_create_on_split)) | |
1065 | { | |
1066 | /* not split, we're being asked to check now because someone | |
1067 | * has left | |
1068 | */ | |
1069 | if(!splitmode) | |
1070 | { | |
1071 | if(eob_count < split_servers || Count.total < split_users) | |
1072 | { | |
1073 | splitmode = 1; | |
1074 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1075 | "Network split, activating splitmode"); | |
c608a061 | 1076 | check_splitmode_ev = rb_event_addish("check_splitmode", check_splitmode, NULL, 2); |
212380e3 AC |
1077 | } |
1078 | } | |
1079 | /* in splitmode, check whether its finished */ | |
1080 | else if(eob_count >= split_servers && Count.total >= split_users) | |
1081 | { | |
1082 | splitmode = 0; | |
1083 | ||
1084 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1085 | "Network rejoined, deactivating splitmode"); | |
1086 | ||
c608a061 | 1087 | rb_event_delete(check_splitmode_ev); |
6a309903 | 1088 | check_splitmode_ev = NULL; |
212380e3 AC |
1089 | } |
1090 | } | |
1091 | } | |
1092 | ||
1093 | ||
1094 | /* allocate_topic() | |
1095 | * | |
1096 | * input - channel to allocate topic for | |
1097 | * output - 1 on success, else 0 | |
1098 | * side effects - channel gets a topic allocated | |
1099 | */ | |
1100 | static void | |
1101 | allocate_topic(struct Channel *chptr) | |
1102 | { | |
1103 | void *ptr; | |
1104 | ||
1105 | if(chptr == NULL) | |
1106 | return; | |
1107 | ||
398b6a73 | 1108 | ptr = rb_bh_alloc(topic_heap); |
212380e3 AC |
1109 | |
1110 | /* Basically we allocate one large block for the topic and | |
1111 | * the topic info. We then split it up into two and shove it | |
55abcbb2 | 1112 | * in the chptr |
212380e3 AC |
1113 | */ |
1114 | chptr->topic = ptr; | |
1115 | chptr->topic_info = (char *) ptr + TOPICLEN + 1; | |
1116 | *chptr->topic = '\0'; | |
1117 | *chptr->topic_info = '\0'; | |
1118 | } | |
1119 | ||
1120 | /* free_topic() | |
1121 | * | |
1122 | * input - channel which has topic to free | |
1123 | * output - | |
1124 | * side effects - channels topic is free'd | |
1125 | */ | |
1126 | static void | |
1127 | free_topic(struct Channel *chptr) | |
1128 | { | |
1129 | void *ptr; | |
1130 | ||
1131 | if(chptr == NULL || chptr->topic == NULL) | |
1132 | return; | |
1133 | ||
1134 | /* This is safe for now - If you change allocate_topic you | |
1135 | * MUST change this as well | |
1136 | */ | |
1137 | ptr = chptr->topic; | |
398b6a73 | 1138 | rb_bh_free(topic_heap, ptr); |
212380e3 AC |
1139 | chptr->topic = NULL; |
1140 | chptr->topic_info = NULL; | |
1141 | } | |
1142 | ||
1143 | /* set_channel_topic() | |
1144 | * | |
1145 | * input - channel, topic to set, topic info and topic ts | |
1146 | * output - | |
1147 | * side effects - channels topic, topic info and TS are set. | |
1148 | */ | |
1149 | void | |
1150 | set_channel_topic(struct Channel *chptr, const char *topic, const char *topic_info, time_t topicts) | |
1151 | { | |
1152 | if(strlen(topic) > 0) | |
1153 | { | |
1154 | if(chptr->topic == NULL) | |
1155 | allocate_topic(chptr); | |
f427c8b0 VY |
1156 | rb_strlcpy(chptr->topic, topic, TOPICLEN + 1); |
1157 | rb_strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN); | |
212380e3 AC |
1158 | chptr->topic_time = topicts; |
1159 | } | |
1160 | else | |
1161 | { | |
1162 | if(chptr->topic != NULL) | |
1163 | free_topic(chptr); | |
1164 | chptr->topic_time = 0; | |
1165 | } | |
1166 | } | |
1167 | ||
3b8a6350 | 1168 | /* channel_modes() |
212380e3 AC |
1169 | * |
1170 | * inputs - pointer to channel | |
1171 | * - pointer to client | |
f1e35c19 JT |
1172 | * output - string with simple modes |
1173 | * side effects - result from previous calls overwritten | |
212380e3 AC |
1174 | * |
1175 | * Stolen from ShadowIRCd 4 --nenolod | |
1176 | */ | |
1177 | const char * | |
3b8a6350 | 1178 | channel_modes(struct Channel *chptr, struct Client *client_p) |
212380e3 AC |
1179 | { |
1180 | int i; | |
1181 | char buf1[BUFSIZE]; | |
1182 | char buf2[BUFSIZE]; | |
1183 | static char final[BUFSIZE]; | |
1184 | char *mbuf = buf1; | |
1185 | char *pbuf = buf2; | |
1186 | ||
1187 | *mbuf++ = '+'; | |
1188 | *pbuf = '\0'; | |
1189 | ||
efccc22c | 1190 | for (i = 0; i < 256; i++) |
be29ec79 AC |
1191 | { |
1192 | if(chmode_table[i].set_func == chm_hidden && (!IsOper(client_p) || !IsClient(client_p))) | |
1193 | continue; | |
3b8a6350 | 1194 | if(chptr->mode.mode & chmode_flags[i]) |
efccc22c | 1195 | *mbuf++ = i; |
be29ec79 | 1196 | } |
212380e3 | 1197 | |
3b8a6350 | 1198 | if(chptr->mode.limit) |
212380e3 AC |
1199 | { |
1200 | *mbuf++ = 'l'; | |
1201 | ||
f1e35c19 | 1202 | if(!IsClient(client_p) || IsMember(client_p, chptr)) |
5203cba5 | 1203 | pbuf += sprintf(pbuf, " %d", chptr->mode.limit); |
212380e3 AC |
1204 | } |
1205 | ||
3b8a6350 | 1206 | if(*chptr->mode.key) |
212380e3 AC |
1207 | { |
1208 | *mbuf++ = 'k'; | |
1209 | ||
f1e35c19 | 1210 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
5203cba5 | 1211 | pbuf += sprintf(pbuf, " %s", chptr->mode.key); |
212380e3 AC |
1212 | } |
1213 | ||
3b8a6350 | 1214 | if(chptr->mode.join_num) |
212380e3 AC |
1215 | { |
1216 | *mbuf++ = 'j'; | |
1217 | ||
f1e35c19 | 1218 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
5203cba5 | 1219 | pbuf += sprintf(pbuf, " %d:%d", chptr->mode.join_num, |
3b8a6350 | 1220 | chptr->mode.join_time); |
212380e3 AC |
1221 | } |
1222 | ||
2da6f6eb JT |
1223 | if(*chptr->mode.forward && |
1224 | (ConfigChannel.use_forward || !IsClient(client_p))) | |
212380e3 AC |
1225 | { |
1226 | *mbuf++ = 'f'; | |
1227 | ||
f1e35c19 | 1228 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
5203cba5 | 1229 | pbuf += sprintf(pbuf, " %s", chptr->mode.forward); |
212380e3 AC |
1230 | } |
1231 | ||
1232 | *mbuf = '\0'; | |
1233 | ||
f427c8b0 | 1234 | rb_strlcpy(final, buf1, sizeof final); |
1f9de103 | 1235 | rb_strlcat(final, buf2, sizeof final); |
212380e3 AC |
1236 | return final; |
1237 | } | |
1238 | ||
212380e3 AC |
1239 | /* void send_cap_mode_changes(struct Client *client_p, |
1240 | * struct Client *source_p, | |
1241 | * struct Channel *chptr, int cap, int nocap) | |
1242 | * Input: The client sending(client_p), the source client(source_p), | |
1243 | * the channel to send mode changes for(chptr) | |
1244 | * Output: None. | |
1245 | * Side-effects: Sends the appropriate mode changes to capable servers. | |
1246 | * | |
1247 | * Reverted back to my original design, except that we now keep a count | |
1248 | * of the number of servers which each combination as an optimisation, so | |
1249 | * the capabs combinations which are not needed are not worked out. -A1kmm | |
346fba92 AC |
1250 | * |
1251 | * Removed most code here because we don't need to be compatible with ircd | |
1252 | * 2.8.21+CSr and stuff. --nenolod | |
212380e3 AC |
1253 | */ |
1254 | void | |
1255 | send_cap_mode_changes(struct Client *client_p, struct Client *source_p, | |
1256 | struct Channel *chptr, struct ChModeChange mode_changes[], int mode_count) | |
1257 | { | |
1258 | static char modebuf[BUFSIZE]; | |
1259 | static char parabuf[BUFSIZE]; | |
1260 | int i, mbl, pbl, nc, mc, preflen, len; | |
1261 | char *pbuf; | |
1262 | const char *arg; | |
346fba92 | 1263 | int dir; |
212380e3 AC |
1264 | int arglen; |
1265 | ||
1266 | /* Now send to servers... */ | |
346fba92 AC |
1267 | mc = 0; |
1268 | nc = 0; | |
1269 | pbl = 0; | |
1270 | parabuf[0] = 0; | |
1271 | pbuf = parabuf; | |
1272 | dir = MODE_QUERY; | |
1273 | ||
5203cba5 | 1274 | mbl = preflen = sprintf(modebuf, ":%s TMODE %ld %s ", |
346fba92 AC |
1275 | use_id(source_p), (long) chptr->channelts, |
1276 | chptr->chname); | |
1277 | ||
1278 | /* loop the list of - modes we have */ | |
1279 | for (i = 0; i < mode_count; i++) | |
212380e3 | 1280 | { |
346fba92 AC |
1281 | /* if they dont support the cap we need, or they do support a cap they |
1282 | * cant have, then dont add it to the modebuf.. that way they wont see | |
1283 | * the mode | |
1284 | */ | |
1285 | if (mode_changes[i].letter == 0) | |
212380e3 AC |
1286 | continue; |
1287 | ||
346fba92 AC |
1288 | if (!EmptyString(mode_changes[i].id)) |
1289 | arg = mode_changes[i].id; | |
1290 | else | |
1291 | arg = mode_changes[i].arg; | |
212380e3 | 1292 | |
346fba92 | 1293 | if(arg) |
212380e3 | 1294 | { |
346fba92 | 1295 | arglen = strlen(arg); |
212380e3 | 1296 | |
346fba92 AC |
1297 | /* dont even think about it! --fl */ |
1298 | if(arglen > MODEBUFLEN - 5) | |
1299 | continue; | |
1300 | } | |
212380e3 | 1301 | |
346fba92 AC |
1302 | /* if we're creeping past the buf size, we need to send it and make |
1303 | * another line for the other modes | |
1304 | * XXX - this could give away server topology with uids being | |
1305 | * different lengths, but not much we can do, except possibly break | |
1306 | * them as if they were the longest of the nick or uid at all times, | |
1307 | * which even then won't work as we don't always know the uid -A1kmm. | |
1308 | */ | |
1309 | if(arg && ((mc == MAXMODEPARAMSSERV) || | |
1310 | ((mbl + pbl + arglen + 4) > (BUFSIZE - 3)))) | |
1311 | { | |
1312 | if(nc != 0) | |
51452a37 | 1313 | sendto_server(client_p, chptr, NOCAPS, NOCAPS, |
346fba92 AC |
1314 | "%s %s", modebuf, parabuf); |
1315 | nc = 0; | |
1316 | mc = 0; | |
1317 | ||
1318 | mbl = preflen; | |
1319 | pbl = 0; | |
1320 | pbuf = parabuf; | |
1321 | parabuf[0] = 0; | |
1322 | dir = MODE_QUERY; | |
1323 | } | |
212380e3 | 1324 | |
346fba92 AC |
1325 | if(dir != mode_changes[i].dir) |
1326 | { | |
1327 | modebuf[mbl++] = (mode_changes[i].dir == MODE_ADD) ? '+' : '-'; | |
1328 | dir = mode_changes[i].dir; | |
1329 | } | |
212380e3 | 1330 | |
346fba92 AC |
1331 | modebuf[mbl++] = mode_changes[i].letter; |
1332 | modebuf[mbl] = 0; | |
1333 | nc++; | |
212380e3 | 1334 | |
346fba92 AC |
1335 | if(arg != NULL) |
1336 | { | |
5203cba5 | 1337 | len = sprintf(pbuf, "%s ", arg); |
346fba92 AC |
1338 | pbuf += len; |
1339 | pbl += len; | |
1340 | mc++; | |
212380e3 | 1341 | } |
346fba92 | 1342 | } |
212380e3 | 1343 | |
346fba92 AC |
1344 | if(pbl && parabuf[pbl - 1] == ' ') |
1345 | parabuf[pbl - 1] = 0; | |
212380e3 | 1346 | |
346fba92 | 1347 | if(nc != 0) |
51452a37 | 1348 | sendto_server(client_p, chptr, NOCAPS, NOCAPS, "%s %s", modebuf, parabuf); |
212380e3 | 1349 | } |
dca9e552 | 1350 | |
346fba92 | 1351 | void |
dca9e552 JT |
1352 | resv_chan_forcepart(const char *name, const char *reason, int temp_time) |
1353 | { | |
1354 | rb_dlink_node *ptr; | |
1355 | rb_dlink_node *next_ptr; | |
1356 | struct Channel *chptr; | |
1357 | struct membership *msptr; | |
1358 | struct Client *target_p; | |
1359 | ||
1360 | if(!ConfigChannel.resv_forcepart) | |
1361 | return; | |
1362 | ||
1363 | /* for each user on our server in the channel list | |
1364 | * send them a PART, and notify opers. | |
1365 | */ | |
1366 | chptr = find_channel(name); | |
1367 | if(chptr != NULL) | |
1368 | { | |
1369 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head) | |
1370 | { | |
1371 | msptr = ptr->data; | |
1372 | target_p = msptr->client_p; | |
1373 | ||
1374 | if(IsExemptResv(target_p)) | |
1375 | continue; | |
1376 | ||
1377 | sendto_server(target_p, chptr, CAP_TS6, NOCAPS, | |
1378 | ":%s PART %s", target_p->id, chptr->chname); | |
1379 | ||
1380 | sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s", | |
1381 | target_p->name, target_p->username, | |
1382 | target_p->host, chptr->chname, target_p->name); | |
1383 | ||
1384 | remove_user_from_channel(msptr); | |
1385 | ||
1386 | /* notify opers & user they were removed from the channel */ | |
1387 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1388 | "Forced PART for %s!%s@%s from %s (%s)", | |
55abcbb2 | 1389 | target_p->name, target_p->username, |
dca9e552 JT |
1390 | target_p->host, name, reason); |
1391 | ||
1392 | if(temp_time > 0) | |
1393 | sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.", | |
1394 | name); | |
1395 | else | |
1396 | sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.", | |
1397 | name); | |
1398 | } | |
1399 | } | |
1400 | } |