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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 | 28 | #include "client.h" |
212380e3 AC |
29 | #include "hash.h" |
30 | #include "hook.h" | |
4562c604 | 31 | #include "match.h" |
212380e3 AC |
32 | #include "ircd.h" |
33 | #include "numeric.h" | |
34 | #include "s_serv.h" /* captab */ | |
35 | #include "s_user.h" | |
36 | #include "send.h" | |
37 | #include "whowas.h" | |
38 | #include "s_conf.h" /* ConfigFileEntry, ConfigChannel */ | |
39 | #include "s_newconf.h" | |
4016731b | 40 | #include "logger.h" |
1c60de97 | 41 | #include "ipv4_from_ipv6.h" |
77d3d2db | 42 | #include "s_assert.h" |
212380e3 | 43 | |
18e4d421 | 44 | struct config_channel_entry ConfigChannel; |
c3d10343 | 45 | rb_dlink_list global_channel_list; |
b617afdc VY |
46 | static rb_bh *channel_heap; |
47 | static rb_bh *ban_heap; | |
48 | static rb_bh *topic_heap; | |
49 | static rb_bh *member_heap; | |
50 | ||
212380e3 AC |
51 | static void free_topic(struct Channel *chptr); |
52 | ||
53 | static int h_can_join; | |
0aa36c5f | 54 | static int h_can_send; |
749d8c11 | 55 | int h_get_channel_access; |
212380e3 AC |
56 | |
57 | /* init_channels() | |
58 | * | |
59 | * input - | |
60 | * output - | |
61 | * side effects - initialises the various blockheaps | |
62 | */ | |
63 | void | |
64 | init_channels(void) | |
65 | { | |
c608a061 AC |
66 | channel_heap = rb_bh_create(sizeof(struct Channel), CHANNEL_HEAP_SIZE, "channel_heap"); |
67 | ban_heap = rb_bh_create(sizeof(struct Ban), BAN_HEAP_SIZE, "ban_heap"); | |
68 | topic_heap = rb_bh_create(TOPICLEN + 1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE, "topic_heap"); | |
69 | member_heap = rb_bh_create(sizeof(struct membership), MEMBER_HEAP_SIZE, "member_heap"); | |
212380e3 AC |
70 | |
71 | h_can_join = register_hook("can_join"); | |
0aa36c5f | 72 | h_can_send = register_hook("can_send"); |
749d8c11 | 73 | h_get_channel_access = register_hook("get_channel_access"); |
212380e3 AC |
74 | } |
75 | ||
76 | /* | |
77 | * allocate_channel - Allocates a channel | |
78 | */ | |
79 | struct Channel * | |
80 | allocate_channel(const char *chname) | |
81 | { | |
82 | struct Channel *chptr; | |
398b6a73 | 83 | chptr = rb_bh_alloc(channel_heap); |
47a03750 | 84 | chptr->chname = rb_strdup(chname); |
212380e3 AC |
85 | return (chptr); |
86 | } | |
87 | ||
88 | void | |
89 | free_channel(struct Channel *chptr) | |
90 | { | |
637c4932 | 91 | rb_free(chptr->chname); |
78e6b731 | 92 | rb_free(chptr->mode_lock); |
398b6a73 | 93 | rb_bh_free(channel_heap, chptr); |
212380e3 AC |
94 | } |
95 | ||
96 | struct Ban * | |
765d839d | 97 | allocate_ban(const char *banstr, const char *who, const char *forward) |
212380e3 AC |
98 | { |
99 | struct Ban *bptr; | |
398b6a73 | 100 | bptr = rb_bh_alloc(ban_heap); |
47a03750 VY |
101 | bptr->banstr = rb_strdup(banstr); |
102 | bptr->who = rb_strdup(who); | |
765d839d | 103 | bptr->forward = forward ? rb_strdup(forward) : NULL; |
212380e3 AC |
104 | |
105 | return (bptr); | |
106 | } | |
107 | ||
108 | void | |
109 | free_ban(struct Ban *bptr) | |
110 | { | |
637c4932 VY |
111 | rb_free(bptr->banstr); |
112 | rb_free(bptr->who); | |
765d839d | 113 | rb_free(bptr->forward); |
398b6a73 | 114 | rb_bh_free(ban_heap, bptr); |
212380e3 AC |
115 | } |
116 | ||
27912fd4 AC |
117 | /* |
118 | * send_channel_join() | |
119 | * | |
120 | * input - channel to join, client joining. | |
121 | * output - none | |
122 | * side effects - none | |
123 | */ | |
124 | void | |
125 | send_channel_join(struct Channel *chptr, struct Client *client_p) | |
126 | { | |
127 | if (!IsClient(client_p)) | |
128 | return; | |
129 | ||
92052a5c AC |
130 | sendto_channel_local_with_capability(ALL_MEMBERS, NOCAPS, CLICAP_EXTENDED_JOIN, chptr, ":%s!%s@%s JOIN %s", |
131 | client_p->name, client_p->username, client_p->host, chptr->chname); | |
132 | ||
26e9dd93 | 133 | sendto_channel_local_with_capability(ALL_MEMBERS, CLICAP_EXTENDED_JOIN, NOCAPS, chptr, ":%s!%s@%s JOIN %s %s :%s", |
92052a5c AC |
134 | client_p->name, client_p->username, client_p->host, chptr->chname, |
135 | EmptyString(client_p->user->suser) ? "*" : client_p->user->suser, | |
26e9dd93 | 136 | client_p->info); |
c5bbc603 KB |
137 | |
138 | /* Send away message to away-notify enabled clients. */ | |
139 | if (client_p->user->away) | |
140 | sendto_channel_local_with_capability_butone(client_p, ALL_MEMBERS, CLICAP_AWAY_NOTIFY, NOCAPS, chptr, | |
141 | ":%s!%s@%s AWAY :%s", client_p->name, client_p->username, | |
142 | client_p->host, client_p->user->away); | |
27912fd4 | 143 | } |
212380e3 AC |
144 | |
145 | /* find_channel_membership() | |
146 | * | |
147 | * input - channel to find them in, client to find | |
148 | * output - membership of client in channel, else NULL | |
149 | * side effects - | |
150 | */ | |
151 | struct membership * | |
152 | find_channel_membership(struct Channel *chptr, struct Client *client_p) | |
153 | { | |
154 | struct membership *msptr; | |
330fc5c1 | 155 | rb_dlink_node *ptr; |
212380e3 AC |
156 | |
157 | if(!IsClient(client_p)) | |
158 | return NULL; | |
159 | ||
160 | /* Pick the most efficient list to use to be nice to things like | |
161 | * CHANSERV which could be in a large number of channels | |
162 | */ | |
330fc5c1 | 163 | if(rb_dlink_list_length(&chptr->members) < rb_dlink_list_length(&client_p->user->channel)) |
212380e3 | 164 | { |
5cefa1d6 | 165 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
166 | { |
167 | msptr = ptr->data; | |
168 | ||
169 | if(msptr->client_p == client_p) | |
170 | return msptr; | |
171 | } | |
172 | } | |
173 | else | |
174 | { | |
5cefa1d6 | 175 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
176 | { |
177 | msptr = ptr->data; | |
178 | ||
179 | if(msptr->chptr == chptr) | |
180 | return msptr; | |
181 | } | |
182 | } | |
183 | ||
184 | return NULL; | |
185 | } | |
186 | ||
187 | /* find_channel_status() | |
188 | * | |
189 | * input - membership to get status for, whether we can combine flags | |
190 | * output - flags of user on channel | |
191 | * side effects - | |
192 | */ | |
193 | const char * | |
194 | find_channel_status(struct membership *msptr, int combine) | |
195 | { | |
196 | static char buffer[3]; | |
197 | char *p; | |
198 | ||
199 | p = buffer; | |
200 | ||
201 | if(is_chanop(msptr)) | |
202 | { | |
203 | if(!combine) | |
204 | return "@"; | |
205 | *p++ = '@'; | |
206 | } | |
207 | ||
208 | if(is_voiced(msptr)) | |
209 | *p++ = '+'; | |
210 | ||
211 | *p = '\0'; | |
212 | return buffer; | |
213 | } | |
214 | ||
215 | /* add_user_to_channel() | |
216 | * | |
217 | * input - channel to add client to, client to add, channel flags | |
55abcbb2 | 218 | * output - |
212380e3 AC |
219 | * side effects - user is added to channel |
220 | */ | |
221 | void | |
222 | add_user_to_channel(struct Channel *chptr, struct Client *client_p, int flags) | |
223 | { | |
224 | struct membership *msptr; | |
225 | ||
226 | s_assert(client_p->user != NULL); | |
227 | if(client_p->user == NULL) | |
228 | return; | |
229 | ||
398b6a73 | 230 | msptr = rb_bh_alloc(member_heap); |
212380e3 AC |
231 | |
232 | msptr->chptr = chptr; | |
233 | msptr->client_p = client_p; | |
234 | msptr->flags = flags; | |
235 | ||
330fc5c1 AC |
236 | rb_dlinkAdd(msptr, &msptr->usernode, &client_p->user->channel); |
237 | rb_dlinkAdd(msptr, &msptr->channode, &chptr->members); | |
212380e3 AC |
238 | |
239 | if(MyClient(client_p)) | |
330fc5c1 | 240 | rb_dlinkAdd(msptr, &msptr->locchannode, &chptr->locmembers); |
212380e3 AC |
241 | } |
242 | ||
243 | /* remove_user_from_channel() | |
244 | * | |
245 | * input - membership pointer to remove from channel | |
246 | * output - | |
247 | * side effects - membership (thus user) is removed from channel | |
248 | */ | |
249 | void | |
250 | remove_user_from_channel(struct membership *msptr) | |
251 | { | |
252 | struct Client *client_p; | |
253 | struct Channel *chptr; | |
254 | s_assert(msptr != NULL); | |
255 | if(msptr == NULL) | |
256 | return; | |
257 | ||
258 | client_p = msptr->client_p; | |
259 | chptr = msptr->chptr; | |
260 | ||
330fc5c1 AC |
261 | rb_dlinkDelete(&msptr->usernode, &client_p->user->channel); |
262 | rb_dlinkDelete(&msptr->channode, &chptr->members); | |
212380e3 AC |
263 | |
264 | if(client_p->servptr == &me) | |
330fc5c1 | 265 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 266 | |
330fc5c1 | 267 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
268 | destroy_channel(chptr); |
269 | ||
398b6a73 | 270 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
271 | |
272 | return; | |
273 | } | |
274 | ||
275 | /* remove_user_from_channels() | |
276 | * | |
277 | * input - user to remove from all channels | |
278 | * output - | |
279 | * side effects - user is removed from all channels | |
280 | */ | |
281 | void | |
282 | remove_user_from_channels(struct Client *client_p) | |
283 | { | |
284 | struct Channel *chptr; | |
285 | struct membership *msptr; | |
330fc5c1 | 286 | rb_dlink_node *ptr; |
637c4932 | 287 | rb_dlink_node *next_ptr; |
212380e3 AC |
288 | |
289 | if(client_p == NULL) | |
290 | return; | |
291 | ||
637c4932 | 292 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->user->channel.head) |
212380e3 AC |
293 | { |
294 | msptr = ptr->data; | |
295 | chptr = msptr->chptr; | |
296 | ||
330fc5c1 | 297 | rb_dlinkDelete(&msptr->channode, &chptr->members); |
212380e3 AC |
298 | |
299 | if(client_p->servptr == &me) | |
330fc5c1 | 300 | rb_dlinkDelete(&msptr->locchannode, &chptr->locmembers); |
212380e3 | 301 | |
330fc5c1 | 302 | if(!(chptr->mode.mode & MODE_PERMANENT) && rb_dlink_list_length(&chptr->members) <= 0) |
212380e3 AC |
303 | destroy_channel(chptr); |
304 | ||
398b6a73 | 305 | rb_bh_free(member_heap, msptr); |
212380e3 AC |
306 | } |
307 | ||
308 | client_p->user->channel.head = client_p->user->channel.tail = NULL; | |
309 | client_p->user->channel.length = 0; | |
310 | } | |
311 | ||
312 | /* invalidate_bancache_user() | |
313 | * | |
314 | * input - user to invalidate ban cache for | |
315 | * output - | |
316 | * side effects - ban cache is invalidated for all memberships of that user | |
317 | * to be used after a nick change | |
318 | */ | |
319 | void | |
320 | invalidate_bancache_user(struct Client *client_p) | |
321 | { | |
322 | struct membership *msptr; | |
330fc5c1 | 323 | rb_dlink_node *ptr; |
212380e3 AC |
324 | |
325 | if(client_p == NULL) | |
326 | return; | |
327 | ||
5cefa1d6 | 328 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
329 | { |
330 | msptr = ptr->data; | |
331 | msptr->bants = 0; | |
332 | msptr->flags &= ~CHFL_BANNED; | |
333 | } | |
334 | } | |
335 | ||
336 | /* check_channel_name() | |
337 | * | |
338 | * input - channel name | |
216f58a2 | 339 | * output - true if valid channel name, else false |
212380e3 AC |
340 | * side effects - |
341 | */ | |
3a46803f | 342 | bool |
212380e3 AC |
343 | check_channel_name(const char *name) |
344 | { | |
345 | s_assert(name != NULL); | |
346 | if(name == NULL) | |
3a46803f | 347 | return false; |
212380e3 AC |
348 | |
349 | for (; *name; ++name) | |
350 | { | |
351 | if(!IsChanChar(*name)) | |
3a46803f | 352 | return false; |
212380e3 AC |
353 | } |
354 | ||
3a46803f | 355 | return true; |
212380e3 AC |
356 | } |
357 | ||
358 | /* free_channel_list() | |
359 | * | |
330fc5c1 | 360 | * input - rb_dlink list to free |
212380e3 AC |
361 | * output - |
362 | * side effects - list of b/e/I modes is cleared | |
363 | */ | |
364 | void | |
330fc5c1 | 365 | free_channel_list(rb_dlink_list * list) |
212380e3 | 366 | { |
330fc5c1 | 367 | rb_dlink_node *ptr; |
637c4932 | 368 | rb_dlink_node *next_ptr; |
212380e3 AC |
369 | struct Ban *actualBan; |
370 | ||
637c4932 | 371 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
212380e3 AC |
372 | { |
373 | actualBan = ptr->data; | |
374 | free_ban(actualBan); | |
375 | } | |
376 | ||
377 | list->head = list->tail = NULL; | |
378 | list->length = 0; | |
379 | } | |
380 | ||
381 | /* destroy_channel() | |
382 | * | |
383 | * input - channel to destroy | |
384 | * output - | |
385 | * side effects - channel is obliterated | |
386 | */ | |
387 | void | |
388 | destroy_channel(struct Channel *chptr) | |
389 | { | |
637c4932 | 390 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 391 | |
637c4932 | 392 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) |
212380e3 AC |
393 | { |
394 | del_invite(chptr, ptr->data); | |
395 | } | |
396 | ||
397 | /* free all bans/exceptions/denies */ | |
398 | free_channel_list(&chptr->banlist); | |
399 | free_channel_list(&chptr->exceptlist); | |
400 | free_channel_list(&chptr->invexlist); | |
fea1ad52 | 401 | free_channel_list(&chptr->quietlist); |
212380e3 AC |
402 | |
403 | /* Free the topic */ | |
404 | free_topic(chptr); | |
405 | ||
330fc5c1 | 406 | rb_dlinkDelete(&chptr->node, &global_channel_list); |
212380e3 AC |
407 | del_from_channel_hash(chptr->chname, chptr); |
408 | free_channel(chptr); | |
409 | } | |
410 | ||
411 | /* channel_pub_or_secret() | |
412 | * | |
413 | * input - channel | |
414 | * output - "=" if public, "@" if secret, else "*" | |
415 | * side effects - | |
416 | */ | |
417 | static const char * | |
418 | channel_pub_or_secret(struct Channel *chptr) | |
419 | { | |
420 | if(PubChannel(chptr)) | |
421 | return ("="); | |
422 | else if(SecretChannel(chptr)) | |
423 | return ("@"); | |
424 | return ("*"); | |
425 | } | |
426 | ||
427 | /* channel_member_names() | |
428 | * | |
429 | * input - channel to list, client to list to, show endofnames | |
430 | * output - | |
431 | * side effects - client is given list of users on channel | |
432 | */ | |
433 | void | |
434 | channel_member_names(struct Channel *chptr, struct Client *client_p, int show_eon) | |
435 | { | |
436 | struct membership *msptr; | |
437 | struct Client *target_p; | |
330fc5c1 | 438 | rb_dlink_node *ptr; |
212380e3 AC |
439 | char lbuf[BUFSIZE]; |
440 | char *t; | |
441 | int mlen; | |
442 | int tlen; | |
443 | int cur_len; | |
444 | int is_member; | |
445 | int stack = IsCapable(client_p, CLICAP_MULTI_PREFIX); | |
446 | ||
447 | if(ShowChannel(client_p, chptr)) | |
448 | { | |
449 | is_member = IsMember(client_p, chptr); | |
450 | ||
5203cba5 | 451 | cur_len = mlen = sprintf(lbuf, form_str(RPL_NAMREPLY), |
212380e3 AC |
452 | me.name, client_p->name, |
453 | channel_pub_or_secret(chptr), chptr->chname); | |
454 | ||
455 | t = lbuf + cur_len; | |
456 | ||
5cefa1d6 | 457 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
458 | { |
459 | msptr = ptr->data; | |
460 | target_p = msptr->client_p; | |
461 | ||
462 | if(IsInvisible(target_p) && !is_member) | |
463 | continue; | |
464 | ||
1b54aa5c | 465 | if (IsCapable(client_p, CLICAP_USERHOST_IN_NAMES)) |
212380e3 | 466 | { |
1b54aa5c MT |
467 | /* space, possible "@+" prefix */ |
468 | if (cur_len + strlen(target_p->name) + strlen(target_p->username) + strlen(target_p->host) + 5 >= BUFSIZE - 5) | |
469 | { | |
470 | *(t - 1) = '\0'; | |
471 | sendto_one(client_p, "%s", lbuf); | |
472 | cur_len = mlen; | |
473 | t = lbuf + mlen; | |
474 | } | |
475 | ||
5203cba5 | 476 | tlen = sprintf(t, "%s%s!%s@%s ", find_channel_status(msptr, stack), |
1b54aa5c MT |
477 | target_p->name, target_p->username, target_p->host); |
478 | } | |
479 | else | |
480 | { | |
481 | /* space, possible "@+" prefix */ | |
482 | if(cur_len + strlen(target_p->name) + 3 >= BUFSIZE - 3) | |
483 | { | |
484 | *(t - 1) = '\0'; | |
485 | sendto_one(client_p, "%s", lbuf); | |
486 | cur_len = mlen; | |
487 | t = lbuf + mlen; | |
488 | } | |
489 | ||
5203cba5 | 490 | tlen = sprintf(t, "%s%s ", find_channel_status(msptr, stack), |
1b54aa5c | 491 | target_p->name); |
212380e3 | 492 | } |
212380e3 AC |
493 | |
494 | cur_len += tlen; | |
495 | t += tlen; | |
496 | } | |
497 | ||
498 | /* The old behaviour here was to always output our buffer, | |
499 | * even if there are no clients we can show. This happens | |
500 | * when a client does "NAMES" with no parameters, and all | |
501 | * the clients on a -sp channel are +i. I dont see a good | |
502 | * reason for keeping that behaviour, as it just wastes | |
503 | * bandwidth. --anfl | |
504 | */ | |
505 | if(cur_len != mlen) | |
506 | { | |
507 | *(t - 1) = '\0'; | |
508 | sendto_one(client_p, "%s", lbuf); | |
509 | } | |
510 | } | |
511 | ||
512 | if(show_eon) | |
513 | sendto_one(client_p, form_str(RPL_ENDOFNAMES), | |
514 | me.name, client_p->name, chptr->chname); | |
515 | } | |
516 | ||
517 | /* del_invite() | |
518 | * | |
519 | * input - channel to remove invite from, client to remove | |
520 | * output - | |
521 | * side effects - user is removed from invite list, if exists | |
522 | */ | |
523 | void | |
524 | del_invite(struct Channel *chptr, struct Client *who) | |
525 | { | |
330fc5c1 AC |
526 | rb_dlinkFindDestroy(who, &chptr->invites); |
527 | rb_dlinkFindDestroy(chptr, &who->user->invited); | |
212380e3 AC |
528 | } |
529 | ||
a14de124 | 530 | /* is_banned_list() |
212380e3 | 531 | * |
a14de124 JT |
532 | * input - channel to check bans for, ban list (banlist or quietlist), |
533 | * user to check bans against, optional prebuilt buffers, | |
534 | * optional forward channel pointer | |
212380e3 AC |
535 | * output - 1 if banned, else 0 |
536 | * side effects - | |
537 | */ | |
a14de124 JT |
538 | static int |
539 | is_banned_list(struct Channel *chptr, rb_dlink_list *list, | |
540 | struct Client *who, struct membership *msptr, | |
541 | const char *s, const char *s2, const char **forward) | |
212380e3 AC |
542 | { |
543 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
544 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
545 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
1c60de97 | 546 | char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6]; |
212380e3 | 547 | char *s3 = NULL; |
1c60de97 JT |
548 | char *s4 = NULL; |
549 | struct sockaddr_in ip4; | |
330fc5c1 | 550 | rb_dlink_node *ptr; |
212380e3 AC |
551 | struct Ban *actualBan = NULL; |
552 | struct Ban *actualExcept = NULL; | |
553 | ||
554 | if(!MyClient(who)) | |
555 | return 0; | |
556 | ||
557 | /* if the buffers havent been built, do it here */ | |
558 | if(s == NULL) | |
559 | { | |
5203cba5 VI |
560 | sprintf(src_host, "%s!%s@%s", who->name, who->username, who->host); |
561 | sprintf(src_iphost, "%s!%s@%s", who->name, who->username, who->sockhost); | |
212380e3 AC |
562 | |
563 | s = src_host; | |
564 | s2 = src_iphost; | |
565 | } | |
566 | if(who->localClient->mangledhost != NULL) | |
567 | { | |
568 | /* if host mangling mode enabled, also check their real host */ | |
569 | if(!strcmp(who->host, who->localClient->mangledhost)) | |
570 | { | |
5203cba5 | 571 | sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->orighost); |
212380e3 AC |
572 | s3 = src_althost; |
573 | } | |
574 | /* if host mangling mode not enabled and no other spoof, | |
575 | * also check the mangled form of their host */ | |
576 | else if (!IsDynSpoof(who)) | |
577 | { | |
5203cba5 | 578 | sprintf(src_althost, "%s!%s@%s", who->name, who->username, who->localClient->mangledhost); |
212380e3 AC |
579 | s3 = src_althost; |
580 | } | |
581 | } | |
1c60de97 | 582 | #ifdef RB_IPV6 |
e867208d | 583 | if(GET_SS_FAMILY(&who->localClient->ip) == AF_INET6 && |
1c60de97 JT |
584 | ipv4_from_ipv6((const struct sockaddr_in6 *)&who->localClient->ip, &ip4)) |
585 | { | |
5203cba5 | 586 | sprintf(src_ip4host, "%s!%s@", who->name, who->username); |
1c60de97 JT |
587 | s4 = src_ip4host + strlen(src_ip4host); |
588 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
589 | s4, src_ip4host + sizeof src_ip4host - s4); | |
590 | s4 = src_ip4host; | |
591 | } | |
592 | #endif | |
212380e3 | 593 | |
a14de124 | 594 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
595 | { |
596 | actualBan = ptr->data; | |
597 | if(match(actualBan->banstr, s) || | |
598 | match(actualBan->banstr, s2) || | |
599 | match_cidr(actualBan->banstr, s2) || | |
600 | match_extban(actualBan->banstr, who, chptr, CHFL_BAN) || | |
1c60de97 JT |
601 | (s3 != NULL && match(actualBan->banstr, s3)) |
602 | #ifdef RB_IPV6 | |
603 | || | |
604 | (s4 != NULL && (match(actualBan->banstr, s4) || match_cidr(actualBan->banstr, s4))) | |
605 | #endif | |
606 | ) | |
212380e3 AC |
607 | break; |
608 | else | |
609 | actualBan = NULL; | |
610 | } | |
611 | ||
612 | if((actualBan != NULL) && ConfigChannel.use_except) | |
613 | { | |
5cefa1d6 | 614 | RB_DLINK_FOREACH(ptr, chptr->exceptlist.head) |
212380e3 AC |
615 | { |
616 | actualExcept = ptr->data; | |
617 | ||
618 | /* theyre exempted.. */ | |
619 | if(match(actualExcept->banstr, s) || | |
620 | match(actualExcept->banstr, s2) || | |
621 | match_cidr(actualExcept->banstr, s2) || | |
622 | match_extban(actualExcept->banstr, who, chptr, CHFL_EXCEPTION) || | |
623 | (s3 != NULL && match(actualExcept->banstr, s3))) | |
624 | { | |
625 | /* cache the fact theyre not banned */ | |
626 | if(msptr != NULL) | |
627 | { | |
628 | msptr->bants = chptr->bants; | |
629 | msptr->flags &= ~CHFL_BANNED; | |
630 | } | |
631 | ||
632 | return CHFL_EXCEPTION; | |
633 | } | |
634 | } | |
635 | } | |
636 | ||
637 | /* cache the banned/not banned status */ | |
638 | if(msptr != NULL) | |
639 | { | |
640 | msptr->bants = chptr->bants; | |
641 | ||
642 | if(actualBan != NULL) | |
643 | { | |
644 | msptr->flags |= CHFL_BANNED; | |
645 | return CHFL_BAN; | |
646 | } | |
647 | else | |
648 | { | |
649 | msptr->flags &= ~CHFL_BANNED; | |
650 | return 0; | |
651 | } | |
652 | } | |
653 | ||
765d839d EM |
654 | if (actualBan && actualBan->forward && forward) |
655 | *forward = actualBan->forward; | |
656 | ||
212380e3 AC |
657 | return ((actualBan ? CHFL_BAN : 0)); |
658 | } | |
659 | ||
a14de124 JT |
660 | /* is_banned() |
661 | * | |
662 | * input - channel to check bans for, user to check bans against | |
663 | * optional prebuilt buffers, optional forward channel pointer | |
664 | * output - 1 if banned, else 0 | |
665 | * side effects - | |
666 | */ | |
667 | int | |
668 | is_banned(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
669 | const char *s, const char *s2, const char **forward) | |
670 | { | |
2f9687c4 AC |
671 | if (chptr->last_checked_client != NULL && |
672 | who == chptr->last_checked_client && | |
673 | chptr->last_checked_type == CHFL_BAN && | |
1e8138af | 674 | chptr->last_checked_ts > chptr->bants) |
2f9687c4 AC |
675 | return chptr->last_checked_result; |
676 | ||
bcbc6bd9 | 677 | chptr->last_checked_client = who; |
2f9687c4 AC |
678 | chptr->last_checked_type = CHFL_BAN; |
679 | chptr->last_checked_result = is_banned_list(chptr, &chptr->banlist, who, msptr, s, s2, forward); | |
680 | chptr->last_checked_ts = rb_current_time(); | |
681 | ||
682 | return chptr->last_checked_result; | |
a14de124 JT |
683 | } |
684 | ||
212380e3 AC |
685 | /* is_quieted() |
686 | * | |
687 | * input - channel to check bans for, user to check bans against | |
688 | * optional prebuilt buffers | |
689 | * output - 1 if banned, else 0 | |
690 | * side effects - | |
691 | */ | |
692 | int | |
693 | is_quieted(struct Channel *chptr, struct Client *who, struct membership *msptr, | |
694 | const char *s, const char *s2) | |
695 | { | |
2f9687c4 AC |
696 | if (chptr->last_checked_client != NULL && |
697 | who == chptr->last_checked_client && | |
698 | chptr->last_checked_type == CHFL_QUIET && | |
1e8138af | 699 | chptr->last_checked_ts > chptr->bants) |
2f9687c4 AC |
700 | return chptr->last_checked_result; |
701 | ||
bcbc6bd9 | 702 | chptr->last_checked_client = who; |
2f9687c4 AC |
703 | chptr->last_checked_type = CHFL_QUIET; |
704 | chptr->last_checked_result = is_banned_list(chptr, &chptr->quietlist, who, msptr, s, s2, NULL); | |
705 | chptr->last_checked_ts = rb_current_time(); | |
706 | ||
707 | return chptr->last_checked_result; | |
212380e3 AC |
708 | } |
709 | ||
710 | /* can_join() | |
711 | * | |
712 | * input - client to check, channel to check for, key | |
765d839d | 713 | * output - reason for not being able to join, else 0, channel name to forward to |
212380e3 | 714 | * side effects - |
a63f7af7 | 715 | * caveats - this function should only be called on a local user. |
212380e3 AC |
716 | */ |
717 | int | |
fe74401b | 718 | can_join(struct Client *source_p, struct Channel *chptr, const char *key, const char **forward) |
212380e3 | 719 | { |
330fc5c1 AC |
720 | rb_dlink_node *invite = NULL; |
721 | rb_dlink_node *ptr; | |
212380e3 AC |
722 | struct Ban *invex = NULL; |
723 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; | |
724 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
725 | char src_althost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
726 | int use_althost = 0; | |
1ebf4db4 | 727 | int i = 0; |
212380e3 AC |
728 | hook_data_channel moduledata; |
729 | ||
730 | s_assert(source_p->localClient != NULL); | |
731 | ||
8bb19bd7 AC |
732 | moduledata.client = source_p; |
733 | moduledata.chptr = chptr; | |
734 | moduledata.approved = 0; | |
735 | ||
5203cba5 VI |
736 | sprintf(src_host, "%s!%s@%s", source_p->name, source_p->username, source_p->host); |
737 | sprintf(src_iphost, "%s!%s@%s", source_p->name, source_p->username, source_p->sockhost); | |
212380e3 AC |
738 | if(source_p->localClient->mangledhost != NULL) |
739 | { | |
740 | /* if host mangling mode enabled, also check their real host */ | |
741 | if(!strcmp(source_p->host, source_p->localClient->mangledhost)) | |
742 | { | |
5203cba5 | 743 | sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->orighost); |
212380e3 AC |
744 | use_althost = 1; |
745 | } | |
746 | /* if host mangling mode not enabled and no other spoof, | |
747 | * also check the mangled form of their host */ | |
748 | else if (!IsDynSpoof(source_p)) | |
749 | { | |
5203cba5 | 750 | sprintf(src_althost, "%s!%s@%s", source_p->name, source_p->username, source_p->localClient->mangledhost); |
212380e3 AC |
751 | use_althost = 1; |
752 | } | |
753 | } | |
754 | ||
765d839d | 755 | if((is_banned(chptr, source_p, NULL, src_host, src_iphost, forward)) == CHFL_BAN) |
8bb19bd7 AC |
756 | { |
757 | moduledata.approved = ERR_BANNEDFROMCHAN; | |
758 | goto finish_join_check; | |
759 | } | |
212380e3 | 760 | |
765d839d EM |
761 | if(*chptr->mode.key && (EmptyString(key) || irccmp(chptr->mode.key, key))) |
762 | { | |
763 | moduledata.approved = ERR_BADCHANNELKEY; | |
764 | goto finish_join_check; | |
765 | } | |
766 | ||
767 | /* All checks from this point on will forward... */ | |
768 | if(forward) | |
769 | *forward = chptr->mode.forward; | |
770 | ||
212380e3 AC |
771 | if(chptr->mode.mode & MODE_INVITEONLY) |
772 | { | |
5cefa1d6 | 773 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
212380e3 | 774 | { |
1ebf4db4 | 775 | if(invite->data == chptr) |
212380e3 AC |
776 | break; |
777 | } | |
1ebf4db4 | 778 | if(invite == NULL) |
212380e3 AC |
779 | { |
780 | if(!ConfigChannel.use_invex) | |
8bb19bd7 | 781 | moduledata.approved = ERR_INVITEONLYCHAN; |
5cefa1d6 | 782 | RB_DLINK_FOREACH(ptr, chptr->invexlist.head) |
212380e3 AC |
783 | { |
784 | invex = ptr->data; | |
785 | if(match(invex->banstr, src_host) | |
786 | || match(invex->banstr, src_iphost) | |
787 | || match_cidr(invex->banstr, src_iphost) | |
788 | || match_extban(invex->banstr, source_p, chptr, CHFL_INVEX) | |
789 | || (use_althost && match(invex->banstr, src_althost))) | |
790 | break; | |
791 | } | |
792 | if(ptr == NULL) | |
8bb19bd7 | 793 | moduledata.approved = ERR_INVITEONLYCHAN; |
212380e3 AC |
794 | } |
795 | } | |
796 | ||
212380e3 | 797 | if(chptr->mode.limit && |
330fc5c1 | 798 | rb_dlink_list_length(&chptr->members) >= (unsigned long) chptr->mode.limit) |
1ebf4db4 | 799 | i = ERR_CHANNELISFULL; |
212380e3 | 800 | if(chptr->mode.mode & MODE_REGONLY && EmptyString(source_p->user->suser)) |
1ebf4db4 | 801 | i = ERR_NEEDREGGEDNICK; |
212380e3 | 802 | /* join throttling stuff --nenolod */ |
1ebf4db4 | 803 | else if(chptr->mode.join_num > 0 && chptr->mode.join_time > 0) |
212380e3 | 804 | { |
55abcbb2 | 805 | if ((rb_current_time() - chptr->join_delta <= |
212380e3 AC |
806 | chptr->mode.join_time) && (chptr->join_count >= |
807 | chptr->mode.join_num)) | |
1ebf4db4 JT |
808 | i = ERR_THROTTLE; |
809 | } | |
810 | ||
811 | /* allow /invite to override +l/+r/+j also -- jilles */ | |
812 | if (i != 0 && invite == NULL) | |
813 | { | |
5cefa1d6 | 814 | RB_DLINK_FOREACH(invite, source_p->user->invited.head) |
1ebf4db4 JT |
815 | { |
816 | if(invite->data == chptr) | |
817 | break; | |
818 | } | |
819 | if (invite == NULL) | |
8bb19bd7 | 820 | moduledata.approved = i; |
212380e3 AC |
821 | } |
822 | ||
8bb19bd7 | 823 | finish_join_check: |
212380e3 AC |
824 | call_hook(h_can_join, &moduledata); |
825 | ||
826 | return moduledata.approved; | |
827 | } | |
828 | ||
829 | /* can_send() | |
830 | * | |
831 | * input - user to check in channel, membership pointer | |
832 | * output - whether can explicitly send or not, else CAN_SEND_NONOP | |
833 | * side effects - | |
834 | */ | |
835 | int | |
836 | can_send(struct Channel *chptr, struct Client *source_p, struct membership *msptr) | |
837 | { | |
0aa36c5f AC |
838 | hook_data_channel_approval moduledata; |
839 | ||
840 | moduledata.approved = CAN_SEND_NONOP; | |
202d4966 | 841 | moduledata.dir = MODE_QUERY; |
0aa36c5f | 842 | |
212380e3 AC |
843 | if(IsServer(source_p) || IsService(source_p)) |
844 | return CAN_SEND_OPV; | |
845 | ||
846 | if(MyClient(source_p) && hash_find_resv(chptr->chname) && | |
847 | !IsOper(source_p) && !IsExemptResv(source_p)) | |
0aa36c5f | 848 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
849 | |
850 | if(msptr == NULL) | |
851 | { | |
852 | msptr = find_channel_membership(chptr, source_p); | |
853 | ||
854 | if(msptr == NULL) | |
855 | { | |
856 | /* if its +m or +n and theyre not in the channel, | |
857 | * they cant send. we dont check bans here because | |
858 | * theres no possibility of caching them --fl | |
859 | */ | |
860 | if(chptr->mode.mode & MODE_NOPRIVMSGS || chptr->mode.mode & MODE_MODERATED) | |
0aa36c5f | 861 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 862 | else |
0aa36c5f | 863 | moduledata.approved = CAN_SEND_NONOP; |
b697041e AC |
864 | |
865 | return moduledata.approved; | |
212380e3 AC |
866 | } |
867 | } | |
868 | ||
212380e3 | 869 | if(chptr->mode.mode & MODE_MODERATED) |
0aa36c5f | 870 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
871 | |
872 | if(MyClient(source_p)) | |
873 | { | |
874 | /* cached can_send */ | |
875 | if(msptr->bants == chptr->bants) | |
876 | { | |
877 | if(can_send_banned(msptr)) | |
0aa36c5f | 878 | moduledata.approved = CAN_SEND_NO; |
212380e3 | 879 | } |
765d839d | 880 | else if(is_banned(chptr, source_p, msptr, NULL, NULL, NULL) == CHFL_BAN |
212380e3 | 881 | || is_quieted(chptr, source_p, msptr, NULL, NULL) == CHFL_BAN) |
0aa36c5f | 882 | moduledata.approved = CAN_SEND_NO; |
212380e3 AC |
883 | } |
884 | ||
e06988c6 AC |
885 | if(is_chanop_voiced(msptr)) |
886 | moduledata.approved = CAN_SEND_OPV; | |
887 | ||
f4b52a0a EM |
888 | moduledata.client = source_p; |
889 | moduledata.chptr = msptr->chptr; | |
890 | moduledata.msptr = msptr; | |
891 | moduledata.target = NULL; | |
202d4966 | 892 | moduledata.dir = (moduledata.approved == CAN_SEND_NO) ? MODE_ADD : MODE_QUERY; |
f4b52a0a | 893 | |
0aa36c5f AC |
894 | call_hook(h_can_send, &moduledata); |
895 | ||
896 | return moduledata.approved; | |
212380e3 AC |
897 | } |
898 | ||
15484f02 BG |
899 | /* |
900 | * flood_attack_channel | |
901 | * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC | |
902 | * says NOTICE must not auto reply | |
55abcbb2 | 903 | * - pointer to source Client |
3b9507d0 MU |
904 | * - pointer to target channel |
905 | * output - true if target is under flood attack | |
15484f02 BG |
906 | * side effects - check for flood attack on target chptr |
907 | */ | |
3b9507d0 | 908 | bool |
15484f02 BG |
909 | flood_attack_channel(int p_or_n, struct Client *source_p, struct Channel *chptr, char *chname) |
910 | { | |
911 | int delta; | |
912 | ||
913 | if(GlobalSetOptions.floodcount && MyClient(source_p)) | |
914 | { | |
915 | if((chptr->first_received_message_time + 1) < rb_current_time()) | |
916 | { | |
917 | delta = rb_current_time() - chptr->first_received_message_time; | |
918 | chptr->received_number_of_privmsgs -= delta; | |
919 | chptr->first_received_message_time = rb_current_time(); | |
920 | if(chptr->received_number_of_privmsgs <= 0) | |
921 | { | |
922 | chptr->received_number_of_privmsgs = 0; | |
923 | chptr->flood_noticed = 0; | |
924 | } | |
925 | } | |
926 | ||
927 | if((chptr->received_number_of_privmsgs >= GlobalSetOptions.floodcount) | |
928 | || chptr->flood_noticed) | |
929 | { | |
930 | if(chptr->flood_noticed == 0) | |
931 | { | |
932 | sendto_realops_snomask(SNO_BOTS, *chptr->chname == '&' ? L_ALL : L_NETWIDE, | |
933 | "Possible Flooder %s[%s@%s] on %s target: %s", | |
934 | source_p->name, source_p->username, | |
935 | source_p->orighost, | |
936 | source_p->servptr->name, chptr->chname); | |
937 | chptr->flood_noticed = 1; | |
938 | ||
939 | /* Add a bit of penalty */ | |
940 | chptr->received_number_of_privmsgs += 2; | |
941 | } | |
942 | if(MyClient(source_p) && (p_or_n != 1)) | |
943 | sendto_one(source_p, | |
944 | ":%s NOTICE %s :*** Message to %s throttled due to flooding", | |
945 | me.name, source_p->name, chptr->chname); | |
3b9507d0 | 946 | return true; |
15484f02 BG |
947 | } |
948 | else | |
949 | chptr->received_number_of_privmsgs++; | |
950 | } | |
951 | ||
3b9507d0 | 952 | return false; |
15484f02 BG |
953 | } |
954 | ||
212380e3 AC |
955 | /* find_bannickchange_channel() |
956 | * Input: client to check | |
957 | * Output: channel preventing nick change | |
958 | */ | |
959 | struct Channel * | |
960 | find_bannickchange_channel(struct Client *client_p) | |
961 | { | |
962 | struct Channel *chptr; | |
963 | struct membership *msptr; | |
330fc5c1 | 964 | rb_dlink_node *ptr; |
212380e3 AC |
965 | char src_host[NICKLEN + USERLEN + HOSTLEN + 6]; |
966 | char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6]; | |
967 | ||
968 | if (!MyClient(client_p)) | |
969 | return NULL; | |
970 | ||
5203cba5 VI |
971 | sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host); |
972 | sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost); | |
212380e3 | 973 | |
5cefa1d6 | 974 | RB_DLINK_FOREACH(ptr, client_p->user->channel.head) |
212380e3 AC |
975 | { |
976 | msptr = ptr->data; | |
977 | chptr = msptr->chptr; | |
978 | if (is_chanop_voiced(msptr)) | |
979 | continue; | |
980 | /* cached can_send */ | |
981 | if (msptr->bants == chptr->bants) | |
982 | { | |
983 | if (can_send_banned(msptr)) | |
984 | return chptr; | |
985 | } | |
765d839d | 986 | else if (is_banned(chptr, client_p, msptr, src_host, src_iphost, NULL) == CHFL_BAN |
212380e3 AC |
987 | || is_quieted(chptr, client_p, msptr, src_host, src_iphost) == CHFL_BAN) |
988 | return chptr; | |
989 | } | |
990 | return NULL; | |
991 | } | |
992 | ||
993 | /* void check_spambot_warning(struct Client *source_p) | |
994 | * Input: Client to check, channel name or NULL if this is a part. | |
995 | * Output: none | |
996 | * Side-effects: Updates the client's oper_warn_count_down, warns the | |
997 | * IRC operators if necessary, and updates join_leave_countdown as | |
998 | * needed. | |
999 | */ | |
1000 | void | |
1001 | check_spambot_warning(struct Client *source_p, const char *name) | |
1002 | { | |
1003 | int t_delta; | |
1004 | int decrement_count; | |
1005 | if((GlobalSetOptions.spam_num && | |
1006 | (source_p->localClient->join_leave_count >= GlobalSetOptions.spam_num))) | |
1007 | { | |
1008 | if(source_p->localClient->oper_warn_count_down > 0) | |
1009 | source_p->localClient->oper_warn_count_down--; | |
1010 | else | |
1011 | source_p->localClient->oper_warn_count_down = 0; | |
e0c1f4ec JT |
1012 | if(source_p->localClient->oper_warn_count_down == 0 && |
1013 | name != NULL) | |
212380e3 AC |
1014 | { |
1015 | /* Its already known as a possible spambot */ | |
e0c1f4ec JT |
1016 | sendto_realops_snomask(SNO_BOTS, L_NETWIDE, |
1017 | "User %s (%s@%s) trying to join %s is a possible spambot", | |
1018 | source_p->name, | |
1019 | source_p->username, source_p->orighost, name); | |
212380e3 AC |
1020 | source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN; |
1021 | } | |
1022 | } | |
1023 | else | |
1024 | { | |
1025 | if((t_delta = | |
e3354945 | 1026 | (rb_current_time() - source_p->localClient->last_leave_time)) > |
212380e3 AC |
1027 | JOIN_LEAVE_COUNT_EXPIRE_TIME) |
1028 | { | |
1029 | decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME); | |
981586df JT |
1030 | if(name != NULL) |
1031 | ; | |
1032 | else if(decrement_count > source_p->localClient->join_leave_count) | |
212380e3 AC |
1033 | source_p->localClient->join_leave_count = 0; |
1034 | else | |
1035 | source_p->localClient->join_leave_count -= decrement_count; | |
1036 | } | |
1037 | else | |
1038 | { | |
e3354945 | 1039 | if((rb_current_time() - |
212380e3 AC |
1040 | (source_p->localClient->last_join_time)) < GlobalSetOptions.spam_time) |
1041 | { | |
1042 | /* oh, its a possible spambot */ | |
1043 | source_p->localClient->join_leave_count++; | |
1044 | } | |
1045 | } | |
1046 | if(name != NULL) | |
e3354945 | 1047 | source_p->localClient->last_join_time = rb_current_time(); |
212380e3 | 1048 | else |
e3354945 | 1049 | source_p->localClient->last_leave_time = rb_current_time(); |
212380e3 AC |
1050 | } |
1051 | } | |
1052 | ||
1053 | /* check_splitmode() | |
1054 | * | |
1055 | * input - | |
1056 | * output - | |
1057 | * side effects - compares usercount and servercount against their split | |
1058 | * values and adjusts splitmode accordingly | |
1059 | */ | |
1060 | void | |
1061 | check_splitmode(void *unused) | |
1062 | { | |
1063 | if(splitchecking && (ConfigChannel.no_join_on_split || ConfigChannel.no_create_on_split)) | |
1064 | { | |
1065 | /* not split, we're being asked to check now because someone | |
1066 | * has left | |
1067 | */ | |
1068 | if(!splitmode) | |
1069 | { | |
1070 | if(eob_count < split_servers || Count.total < split_users) | |
1071 | { | |
1072 | splitmode = 1; | |
1073 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1074 | "Network split, activating splitmode"); | |
c608a061 | 1075 | check_splitmode_ev = rb_event_addish("check_splitmode", check_splitmode, NULL, 2); |
212380e3 AC |
1076 | } |
1077 | } | |
1078 | /* in splitmode, check whether its finished */ | |
1079 | else if(eob_count >= split_servers && Count.total >= split_users) | |
1080 | { | |
1081 | splitmode = 0; | |
1082 | ||
1083 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1084 | "Network rejoined, deactivating splitmode"); | |
1085 | ||
c608a061 | 1086 | rb_event_delete(check_splitmode_ev); |
6a309903 | 1087 | check_splitmode_ev = NULL; |
212380e3 AC |
1088 | } |
1089 | } | |
1090 | } | |
1091 | ||
1092 | ||
1093 | /* allocate_topic() | |
1094 | * | |
1095 | * input - channel to allocate topic for | |
1096 | * output - 1 on success, else 0 | |
1097 | * side effects - channel gets a topic allocated | |
1098 | */ | |
1099 | static void | |
1100 | allocate_topic(struct Channel *chptr) | |
1101 | { | |
1102 | void *ptr; | |
1103 | ||
1104 | if(chptr == NULL) | |
1105 | return; | |
1106 | ||
398b6a73 | 1107 | ptr = rb_bh_alloc(topic_heap); |
212380e3 AC |
1108 | |
1109 | /* Basically we allocate one large block for the topic and | |
1110 | * the topic info. We then split it up into two and shove it | |
55abcbb2 | 1111 | * in the chptr |
212380e3 AC |
1112 | */ |
1113 | chptr->topic = ptr; | |
1114 | chptr->topic_info = (char *) ptr + TOPICLEN + 1; | |
1115 | *chptr->topic = '\0'; | |
1116 | *chptr->topic_info = '\0'; | |
1117 | } | |
1118 | ||
1119 | /* free_topic() | |
1120 | * | |
1121 | * input - channel which has topic to free | |
1122 | * output - | |
1123 | * side effects - channels topic is free'd | |
1124 | */ | |
1125 | static void | |
1126 | free_topic(struct Channel *chptr) | |
1127 | { | |
1128 | void *ptr; | |
1129 | ||
1130 | if(chptr == NULL || chptr->topic == NULL) | |
1131 | return; | |
1132 | ||
1133 | /* This is safe for now - If you change allocate_topic you | |
1134 | * MUST change this as well | |
1135 | */ | |
1136 | ptr = chptr->topic; | |
398b6a73 | 1137 | rb_bh_free(topic_heap, ptr); |
212380e3 AC |
1138 | chptr->topic = NULL; |
1139 | chptr->topic_info = NULL; | |
1140 | } | |
1141 | ||
1142 | /* set_channel_topic() | |
1143 | * | |
1144 | * input - channel, topic to set, topic info and topic ts | |
1145 | * output - | |
1146 | * side effects - channels topic, topic info and TS are set. | |
1147 | */ | |
1148 | void | |
1149 | set_channel_topic(struct Channel *chptr, const char *topic, const char *topic_info, time_t topicts) | |
1150 | { | |
1151 | if(strlen(topic) > 0) | |
1152 | { | |
1153 | if(chptr->topic == NULL) | |
1154 | allocate_topic(chptr); | |
f427c8b0 VY |
1155 | rb_strlcpy(chptr->topic, topic, TOPICLEN + 1); |
1156 | rb_strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN); | |
212380e3 AC |
1157 | chptr->topic_time = topicts; |
1158 | } | |
1159 | else | |
1160 | { | |
1161 | if(chptr->topic != NULL) | |
1162 | free_topic(chptr); | |
1163 | chptr->topic_time = 0; | |
1164 | } | |
1165 | } | |
1166 | ||
3b8a6350 | 1167 | /* channel_modes() |
212380e3 AC |
1168 | * |
1169 | * inputs - pointer to channel | |
1170 | * - pointer to client | |
f1e35c19 JT |
1171 | * output - string with simple modes |
1172 | * side effects - result from previous calls overwritten | |
212380e3 AC |
1173 | * |
1174 | * Stolen from ShadowIRCd 4 --nenolod | |
1175 | */ | |
1176 | const char * | |
3b8a6350 | 1177 | channel_modes(struct Channel *chptr, struct Client *client_p) |
212380e3 AC |
1178 | { |
1179 | int i; | |
1180 | char buf1[BUFSIZE]; | |
1181 | char buf2[BUFSIZE]; | |
1182 | static char final[BUFSIZE]; | |
1183 | char *mbuf = buf1; | |
1184 | char *pbuf = buf2; | |
1185 | ||
1186 | *mbuf++ = '+'; | |
1187 | *pbuf = '\0'; | |
1188 | ||
efccc22c | 1189 | for (i = 0; i < 256; i++) |
be29ec79 AC |
1190 | { |
1191 | if(chmode_table[i].set_func == chm_hidden && (!IsOper(client_p) || !IsClient(client_p))) | |
1192 | continue; | |
3b8a6350 | 1193 | if(chptr->mode.mode & chmode_flags[i]) |
efccc22c | 1194 | *mbuf++ = i; |
be29ec79 | 1195 | } |
212380e3 | 1196 | |
3b8a6350 | 1197 | if(chptr->mode.limit) |
212380e3 AC |
1198 | { |
1199 | *mbuf++ = 'l'; | |
1200 | ||
f1e35c19 | 1201 | if(!IsClient(client_p) || IsMember(client_p, chptr)) |
5203cba5 | 1202 | pbuf += sprintf(pbuf, " %d", chptr->mode.limit); |
212380e3 AC |
1203 | } |
1204 | ||
3b8a6350 | 1205 | if(*chptr->mode.key) |
212380e3 AC |
1206 | { |
1207 | *mbuf++ = 'k'; | |
1208 | ||
f1e35c19 | 1209 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
5203cba5 | 1210 | pbuf += sprintf(pbuf, " %s", chptr->mode.key); |
212380e3 AC |
1211 | } |
1212 | ||
3b8a6350 | 1213 | if(chptr->mode.join_num) |
212380e3 AC |
1214 | { |
1215 | *mbuf++ = 'j'; | |
1216 | ||
f1e35c19 | 1217 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
5203cba5 | 1218 | pbuf += sprintf(pbuf, " %d:%d", chptr->mode.join_num, |
3b8a6350 | 1219 | chptr->mode.join_time); |
212380e3 AC |
1220 | } |
1221 | ||
2da6f6eb JT |
1222 | if(*chptr->mode.forward && |
1223 | (ConfigChannel.use_forward || !IsClient(client_p))) | |
212380e3 AC |
1224 | { |
1225 | *mbuf++ = 'f'; | |
1226 | ||
f1e35c19 | 1227 | if(pbuf > buf2 || !IsClient(client_p) || IsMember(client_p, chptr)) |
5203cba5 | 1228 | pbuf += sprintf(pbuf, " %s", chptr->mode.forward); |
212380e3 AC |
1229 | } |
1230 | ||
1231 | *mbuf = '\0'; | |
1232 | ||
f427c8b0 | 1233 | rb_strlcpy(final, buf1, sizeof final); |
1f9de103 | 1234 | rb_strlcat(final, buf2, sizeof final); |
212380e3 AC |
1235 | return final; |
1236 | } | |
1237 | ||
212380e3 AC |
1238 | /* void send_cap_mode_changes(struct Client *client_p, |
1239 | * struct Client *source_p, | |
1240 | * struct Channel *chptr, int cap, int nocap) | |
1241 | * Input: The client sending(client_p), the source client(source_p), | |
1242 | * the channel to send mode changes for(chptr) | |
1243 | * Output: None. | |
1244 | * Side-effects: Sends the appropriate mode changes to capable servers. | |
1245 | * | |
1246 | * Reverted back to my original design, except that we now keep a count | |
1247 | * of the number of servers which each combination as an optimisation, so | |
1248 | * the capabs combinations which are not needed are not worked out. -A1kmm | |
346fba92 AC |
1249 | * |
1250 | * Removed most code here because we don't need to be compatible with ircd | |
1251 | * 2.8.21+CSr and stuff. --nenolod | |
212380e3 AC |
1252 | */ |
1253 | void | |
1254 | send_cap_mode_changes(struct Client *client_p, struct Client *source_p, | |
1255 | struct Channel *chptr, struct ChModeChange mode_changes[], int mode_count) | |
1256 | { | |
1257 | static char modebuf[BUFSIZE]; | |
1258 | static char parabuf[BUFSIZE]; | |
1259 | int i, mbl, pbl, nc, mc, preflen, len; | |
1260 | char *pbuf; | |
1261 | const char *arg; | |
346fba92 | 1262 | int dir; |
212380e3 AC |
1263 | int arglen; |
1264 | ||
1265 | /* Now send to servers... */ | |
346fba92 AC |
1266 | mc = 0; |
1267 | nc = 0; | |
1268 | pbl = 0; | |
1269 | parabuf[0] = 0; | |
1270 | pbuf = parabuf; | |
1271 | dir = MODE_QUERY; | |
1272 | ||
5203cba5 | 1273 | mbl = preflen = sprintf(modebuf, ":%s TMODE %ld %s ", |
346fba92 AC |
1274 | use_id(source_p), (long) chptr->channelts, |
1275 | chptr->chname); | |
1276 | ||
1277 | /* loop the list of - modes we have */ | |
1278 | for (i = 0; i < mode_count; i++) | |
212380e3 | 1279 | { |
346fba92 AC |
1280 | /* if they dont support the cap we need, or they do support a cap they |
1281 | * cant have, then dont add it to the modebuf.. that way they wont see | |
1282 | * the mode | |
1283 | */ | |
1284 | if (mode_changes[i].letter == 0) | |
212380e3 AC |
1285 | continue; |
1286 | ||
346fba92 AC |
1287 | if (!EmptyString(mode_changes[i].id)) |
1288 | arg = mode_changes[i].id; | |
1289 | else | |
1290 | arg = mode_changes[i].arg; | |
212380e3 | 1291 | |
346fba92 | 1292 | if(arg) |
212380e3 | 1293 | { |
346fba92 | 1294 | arglen = strlen(arg); |
212380e3 | 1295 | |
346fba92 AC |
1296 | /* dont even think about it! --fl */ |
1297 | if(arglen > MODEBUFLEN - 5) | |
1298 | continue; | |
1299 | } | |
212380e3 | 1300 | |
346fba92 AC |
1301 | /* if we're creeping past the buf size, we need to send it and make |
1302 | * another line for the other modes | |
1303 | * XXX - this could give away server topology with uids being | |
1304 | * different lengths, but not much we can do, except possibly break | |
1305 | * them as if they were the longest of the nick or uid at all times, | |
1306 | * which even then won't work as we don't always know the uid -A1kmm. | |
1307 | */ | |
1308 | if(arg && ((mc == MAXMODEPARAMSSERV) || | |
1309 | ((mbl + pbl + arglen + 4) > (BUFSIZE - 3)))) | |
1310 | { | |
1311 | if(nc != 0) | |
51452a37 | 1312 | sendto_server(client_p, chptr, NOCAPS, NOCAPS, |
346fba92 AC |
1313 | "%s %s", modebuf, parabuf); |
1314 | nc = 0; | |
1315 | mc = 0; | |
1316 | ||
1317 | mbl = preflen; | |
1318 | pbl = 0; | |
1319 | pbuf = parabuf; | |
1320 | parabuf[0] = 0; | |
1321 | dir = MODE_QUERY; | |
1322 | } | |
212380e3 | 1323 | |
346fba92 AC |
1324 | if(dir != mode_changes[i].dir) |
1325 | { | |
1326 | modebuf[mbl++] = (mode_changes[i].dir == MODE_ADD) ? '+' : '-'; | |
1327 | dir = mode_changes[i].dir; | |
1328 | } | |
212380e3 | 1329 | |
346fba92 AC |
1330 | modebuf[mbl++] = mode_changes[i].letter; |
1331 | modebuf[mbl] = 0; | |
1332 | nc++; | |
212380e3 | 1333 | |
346fba92 AC |
1334 | if(arg != NULL) |
1335 | { | |
5203cba5 | 1336 | len = sprintf(pbuf, "%s ", arg); |
346fba92 AC |
1337 | pbuf += len; |
1338 | pbl += len; | |
1339 | mc++; | |
212380e3 | 1340 | } |
346fba92 | 1341 | } |
212380e3 | 1342 | |
346fba92 AC |
1343 | if(pbl && parabuf[pbl - 1] == ' ') |
1344 | parabuf[pbl - 1] = 0; | |
212380e3 | 1345 | |
346fba92 | 1346 | if(nc != 0) |
51452a37 | 1347 | sendto_server(client_p, chptr, NOCAPS, NOCAPS, "%s %s", modebuf, parabuf); |
212380e3 | 1348 | } |
dca9e552 | 1349 | |
346fba92 | 1350 | void |
dca9e552 JT |
1351 | resv_chan_forcepart(const char *name, const char *reason, int temp_time) |
1352 | { | |
1353 | rb_dlink_node *ptr; | |
1354 | rb_dlink_node *next_ptr; | |
1355 | struct Channel *chptr; | |
1356 | struct membership *msptr; | |
1357 | struct Client *target_p; | |
1358 | ||
1359 | if(!ConfigChannel.resv_forcepart) | |
1360 | return; | |
1361 | ||
1362 | /* for each user on our server in the channel list | |
1363 | * send them a PART, and notify opers. | |
1364 | */ | |
1365 | chptr = find_channel(name); | |
1366 | if(chptr != NULL) | |
1367 | { | |
1368 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head) | |
1369 | { | |
1370 | msptr = ptr->data; | |
1371 | target_p = msptr->client_p; | |
1372 | ||
1373 | if(IsExemptResv(target_p)) | |
1374 | continue; | |
1375 | ||
1376 | sendto_server(target_p, chptr, CAP_TS6, NOCAPS, | |
1377 | ":%s PART %s", target_p->id, chptr->chname); | |
1378 | ||
1379 | sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s", | |
1380 | target_p->name, target_p->username, | |
1381 | target_p->host, chptr->chname, target_p->name); | |
1382 | ||
1383 | remove_user_from_channel(msptr); | |
1384 | ||
1385 | /* notify opers & user they were removed from the channel */ | |
1386 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1387 | "Forced PART for %s!%s@%s from %s (%s)", | |
55abcbb2 | 1388 | target_p->name, target_p->username, |
dca9e552 JT |
1389 | target_p->host, name, reason); |
1390 | ||
1391 | if(temp_time > 0) | |
1392 | sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.", | |
1393 | name); | |
1394 | else | |
1395 | sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.", | |
1396 | name); | |
1397 | } | |
1398 | } | |
1399 | } |