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chmode: remove unreachable break statement
[solanum.git] / ircd / chmode.c
1 /*
2 * charybdis: A slightly useful ircd.
3 * chmode.c: channel mode management
4 *
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
8 * Copyright (C) 2005-2006 charybdis development team
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 * USA
24 */
25
26 #include "stdinc.h"
27 #include "channel.h"
28 #include "client.h"
29 #include "hash.h"
30 #include "hook.h"
31 #include "match.h"
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"
40 #include "logger.h"
41 #include "chmode.h"
42 #include "s_assert.h"
43 #include "parse.h"
44
45 /* bitmasks for error returns, so we send once per call */
46 #define SM_ERR_NOTS 0x00000001 /* No TS on channel */
47 #define SM_ERR_NOOPS 0x00000002 /* No chan ops */
48 #define SM_ERR_UNKNOWN 0x00000004
49 #define SM_ERR_RPL_C 0x00000008
50 #define SM_ERR_RPL_B 0x00000010
51 #define SM_ERR_RPL_E 0x00000020
52 #define SM_ERR_NOTONCHANNEL 0x00000040 /* Not on channel */
53 #define SM_ERR_RPL_I 0x00000100
54 #define SM_ERR_RPL_D 0x00000200
55 #define SM_ERR_NOPRIVS 0x00000400
56 #define SM_ERR_RPL_Q 0x00000800
57 #define SM_ERR_RPL_F 0x00001000
58 #define SM_ERR_MLOCK 0x00002000
59
60 #define MAXMODES_SIMPLE 46 /* a-zA-Z except bqeIov */
61
62 static struct ChModeChange mode_changes[BUFSIZE];
63 static int mode_count;
64 static int mode_limit;
65 static int mode_limit_simple;
66 static int mask_pos;
67 static int removed_mask_pos;
68
69 char cflagsbuf[256];
70 char cflagsmyinfo[256];
71
72 int chmode_flags[256];
73
74 extern int h_get_channel_access;
75
76 /* OPTIMIZE ME! -- dwr */
77 void
78 construct_cflags_strings(void)
79 {
80 int i;
81 char *ptr = cflagsbuf;
82 char *ptr2 = cflagsmyinfo;
83
84 *ptr = '\0';
85 *ptr2 = '\0';
86
87 for(i = 0; i < 256; i++)
88 {
89 if( !(chmode_table[i].set_func == chm_ban) &&
90 !(chmode_table[i].set_func == chm_forward) &&
91 !(chmode_table[i].set_func == chm_throttle) &&
92 !(chmode_table[i].set_func == chm_key) &&
93 !(chmode_table[i].set_func == chm_limit) &&
94 !(chmode_table[i].set_func == chm_op) &&
95 !(chmode_table[i].set_func == chm_voice))
96 {
97 chmode_flags[i] = chmode_table[i].mode_type;
98 }
99 else
100 {
101 chmode_flags[i] = 0;
102 }
103
104 switch (chmode_flags[i])
105 {
106 case MODE_FREETARGET:
107 case MODE_DISFORWARD:
108 if(ConfigChannel.use_forward)
109 *ptr++ = (char) i;
110 break;
111 default:
112 if(chmode_flags[i] != 0)
113 {
114 *ptr++ = (char) i;
115 }
116 }
117
118 /* Should we leave orphaned check here? -- dwr */
119 if(!(chmode_table[i].set_func == chm_nosuch) && !(chmode_table[i].set_func == chm_orphaned))
120 {
121 *ptr2++ = (char) i;
122 }
123 }
124
125 *ptr++ = '\0';
126 *ptr2++ = '\0';
127 }
128
129 /*
130 * find_umode_slot
131 *
132 * inputs - NONE
133 * outputs - an available cflag bitmask or
134 * 0 if no cflags are available
135 * side effects - NONE
136 */
137 static unsigned int
138 find_cflag_slot(void)
139 {
140 unsigned int all_cflags = 0, my_cflag = 0, i;
141
142 for (i = 0; i < 256; i++)
143 all_cflags |= chmode_flags[i];
144
145 for (my_cflag = 1; my_cflag && (all_cflags & my_cflag);
146 my_cflag <<= 1);
147
148 return my_cflag;
149 }
150
151 unsigned int
152 cflag_add(char c_, ChannelModeFunc function)
153 {
154 int c = (unsigned char)c_;
155
156 if (chmode_table[c].set_func != chm_nosuch &&
157 chmode_table[c].set_func != chm_orphaned)
158 return 0;
159
160 if (chmode_table[c].set_func == chm_nosuch)
161 chmode_table[c].mode_type = find_cflag_slot();
162 if (chmode_table[c].mode_type == 0)
163 return 0;
164 chmode_table[c].set_func = function;
165 construct_cflags_strings();
166 return chmode_table[c].mode_type;
167 }
168
169 void
170 cflag_orphan(char c_)
171 {
172 int c = (unsigned char)c_;
173
174 s_assert(chmode_flags[c] != 0);
175 chmode_table[c].set_func = chm_orphaned;
176 construct_cflags_strings();
177 }
178
179 int
180 get_channel_access(struct Client *source_p, struct Channel *chptr, struct membership *msptr, int dir, const char *modestr)
181 {
182 hook_data_channel_approval moduledata;
183
184 if(!MyClient(source_p))
185 return CHFL_CHANOP;
186
187 moduledata.client = source_p;
188 moduledata.chptr = chptr;
189 moduledata.msptr = msptr;
190 moduledata.target = NULL;
191 moduledata.approved = (msptr != NULL && is_chanop(msptr)) ? CHFL_CHANOP : CHFL_PEON;
192 moduledata.dir = dir;
193 moduledata.modestr = modestr;
194
195 call_hook(h_get_channel_access, &moduledata);
196
197 return moduledata.approved;
198 }
199
200 /* allow_mode_change()
201 *
202 * Checks if mlock and chanops permit a mode change.
203 *
204 * inputs - client, channel, access level, errors pointer, mode char
205 * outputs - false on failure, true on success
206 * side effects - error message sent on failure
207 */
208 static bool
209 allow_mode_change(struct Client *source_p, struct Channel *chptr, int alevel,
210 int *errors, char c)
211 {
212 /* If this mode char is locked, don't allow local users to change it. */
213 if (MyClient(source_p) && chptr->mode_lock && strchr(chptr->mode_lock, c))
214 {
215 if (!(*errors & SM_ERR_MLOCK))
216 sendto_one_numeric(source_p,
217 ERR_MLOCKRESTRICTED,
218 form_str(ERR_MLOCKRESTRICTED),
219 chptr->chname,
220 c,
221 chptr->mode_lock);
222 *errors |= SM_ERR_MLOCK;
223 return false;
224 }
225 if(alevel < CHFL_CHANOP)
226 {
227 if(!(*errors & SM_ERR_NOOPS))
228 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
229 me.name, source_p->name, chptr->chname);
230 *errors |= SM_ERR_NOOPS;
231 return false;
232 }
233 return true;
234 }
235
236 /* add_id()
237 *
238 * inputs - client, channel, id to add, type, forward
239 * outputs - false on failure, true on success
240 * side effects - given id is added to the appropriate list
241 */
242 bool
243 add_id(struct Client *source_p, struct Channel *chptr, const char *banid, const char *forward,
244 rb_dlink_list * list, long mode_type)
245 {
246 struct Ban *actualBan;
247 static char who[USERHOST_REPLYLEN];
248 char *realban = LOCAL_COPY(banid);
249 rb_dlink_node *ptr;
250
251 /* dont let local clients overflow the banlist, or set redundant
252 * bans
253 */
254 if(MyClient(source_p))
255 {
256 if((rb_dlink_list_length(&chptr->banlist) + rb_dlink_list_length(&chptr->exceptlist) + rb_dlink_list_length(&chptr->invexlist) + rb_dlink_list_length(&chptr->quietlist)) >= (unsigned long)(chptr->mode.mode & MODE_EXLIMIT ? ConfigChannel.max_bans_large : ConfigChannel.max_bans))
257 {
258 sendto_one(source_p, form_str(ERR_BANLISTFULL),
259 me.name, source_p->name, chptr->chname, realban);
260 return false;
261 }
262
263 RB_DLINK_FOREACH(ptr, list->head)
264 {
265 actualBan = ptr->data;
266 if(mask_match(actualBan->banstr, realban))
267 return false;
268 }
269 }
270 /* dont let remotes set duplicates */
271 else
272 {
273 RB_DLINK_FOREACH(ptr, list->head)
274 {
275 actualBan = ptr->data;
276 if(!irccmp(actualBan->banstr, realban))
277 return false;
278 }
279 }
280
281
282 if(IsPerson(source_p))
283 sprintf(who, "%s!%s@%s", source_p->name, source_p->username, source_p->host);
284 else
285 rb_strlcpy(who, source_p->name, sizeof(who));
286
287 actualBan = allocate_ban(realban, who, forward);
288 actualBan->when = rb_current_time();
289
290 rb_dlinkAdd(actualBan, &actualBan->node, list);
291
292 /* invalidate the can_send() cache */
293 if(mode_type == CHFL_BAN || mode_type == CHFL_QUIET || mode_type == CHFL_EXCEPTION)
294 chptr->bants = rb_current_time();
295
296 return true;
297 }
298
299 /* del_id()
300 *
301 * inputs - channel, id to remove, type
302 * outputs - pointer to ban that was removed, if any
303 * side effects - given id is removed from the appropriate list and returned
304 */
305 struct Ban *
306 del_id(struct Channel *chptr, const char *banid, rb_dlink_list * list, long mode_type)
307 {
308 rb_dlink_node *ptr;
309 struct Ban *banptr;
310
311 if(EmptyString(banid))
312 return NULL;
313
314 RB_DLINK_FOREACH(ptr, list->head)
315 {
316 banptr = ptr->data;
317
318 if(irccmp(banid, banptr->banstr) == 0)
319 {
320 rb_dlinkDelete(&banptr->node, list);
321
322 /* invalidate the can_send() cache */
323 if(mode_type == CHFL_BAN || mode_type == CHFL_QUIET || mode_type == CHFL_EXCEPTION)
324 chptr->bants = rb_current_time();
325
326 return banptr;
327 }
328 }
329
330 return NULL;
331 }
332
333 /* check_string()
334 *
335 * input - string to check
336 * output - pointer to 'fixed' string, or "*" if empty
337 * side effects - any white space found becomes \0
338 */
339 static char *
340 check_string(char *s)
341 {
342 char *str = s;
343 static char splat[] = "*";
344 if(!(s && *s))
345 return splat;
346
347 for(; *s; ++s)
348 {
349 if(IsSpace(*s))
350 {
351 *s = '\0';
352 break;
353 }
354 }
355 return str;
356 }
357
358 /* pretty_mask()
359 *
360 * inputs - mask to pretty
361 * outputs - better version of the mask
362 * side effects - mask is chopped to limits, and transformed:
363 * x!y@z => x!y@z
364 * y@z => *!y@z
365 * x!y => x!y@*
366 * x => x!*@*
367 * z.d => *!*@z.d
368 */
369 static char *
370 pretty_mask(const char *idmask)
371 {
372 static char mask_buf[BUFSIZE];
373 int old_mask_pos;
374 const char *nick, *user, *host, *forward = NULL;
375 char *t, *at, *ex;
376 int nl, ul, hl, fl;
377 char *mask;
378 size_t masklen;
379
380 mask = LOCAL_COPY(idmask);
381 mask = check_string(mask);
382 collapse(mask);
383 masklen = strlen(mask);
384
385 nick = user = host = "*";
386 nl = ul = hl = 1;
387 fl = 0;
388
389 if((size_t) BUFSIZE - mask_pos < masklen + 5)
390 return NULL;
391
392 old_mask_pos = mask_pos;
393
394 if (*mask == '$')
395 {
396 memcpy(mask_buf + mask_pos, mask, masklen + 1);
397 mask_pos += masklen + 1;
398 t = mask_buf + old_mask_pos + 1;
399 if (*t == '!')
400 *t = '~';
401 if (*t == '~')
402 t++;
403 *t = irctolower(*t);
404 return mask_buf + old_mask_pos;
405 }
406
407 at = ex = NULL;
408 if((t = memchr(mask, '@', masklen)) != NULL)
409 {
410 at = t;
411 t++;
412 if(*t != '\0')
413 host = t, hl = strlen(t);
414
415 if((t = memchr(mask, '!', at - mask)) != NULL)
416 {
417 ex = t;
418 t++;
419 if(at != t)
420 user = t, ul = at - t;
421 if(ex != mask)
422 nick = mask, nl = ex - mask;
423 }
424 else
425 {
426 if(at != mask)
427 user = mask, ul = at - mask;
428 }
429
430 if((t = memchr(host, '!', hl)) != NULL ||
431 (t = memchr(host, '$', hl)) != NULL)
432 {
433 t++;
434 if (host + hl != t)
435 forward = t, fl = host + hl - t;
436 hl = t - 1 - host;
437 }
438 }
439 else if((t = memchr(mask, '!', masklen)) != NULL)
440 {
441 ex = t;
442 t++;
443 if(ex != mask)
444 nick = mask, nl = ex - mask;
445 if(*t != '\0')
446 user = t, ul = strlen(t);
447 }
448 else if(memchr(mask, '.', masklen) != NULL ||
449 memchr(mask, ':', masklen) != NULL)
450 {
451 host = mask, hl = masklen;
452 }
453 else
454 {
455 if(masklen > 0)
456 nick = mask, nl = masklen;
457 }
458
459 /* truncate values to max lengths */
460 if(nl > NICKLEN - 1)
461 nl = NICKLEN - 1;
462 if(ul > USERLEN)
463 ul = USERLEN;
464 if(hl > HOSTLEN)
465 hl = HOSTLEN;
466 if(fl > CHANNELLEN)
467 fl = CHANNELLEN;
468
469 memcpy(mask_buf + mask_pos, nick, nl), mask_pos += nl;
470 mask_buf[mask_pos++] = '!';
471 memcpy(mask_buf + mask_pos, user, ul), mask_pos += ul;
472 mask_buf[mask_pos++] = '@';
473 memcpy(mask_buf + mask_pos, host, hl), mask_pos += hl;
474 if (forward) {
475 mask_buf[mask_pos++] = '$';
476 memcpy(mask_buf + mask_pos, forward, fl), mask_pos += fl;
477 }
478 mask_buf[mask_pos++] = '\0';
479
480 return mask_buf + old_mask_pos;
481 }
482
483 /* check_forward()
484 *
485 * input - client, channel to set mode on, target channel name
486 * output - true if forwarding should be allowed
487 * side effects - numeric sent if not allowed
488 */
489 static bool
490 check_forward(struct Client *source_p, struct Channel *chptr,
491 const char *forward)
492 {
493 struct Channel *targptr = NULL;
494 struct membership *msptr;
495
496 if(!check_channel_name(forward) ||
497 (MyClient(source_p) && (strlen(forward) > LOC_CHANNELLEN || hash_find_resv(forward))))
498 {
499 sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), forward);
500 return false;
501 }
502 /* don't forward to inconsistent target -- jilles */
503 if(chptr->chname[0] == '#' && forward[0] == '&')
504 {
505 sendto_one_numeric(source_p, ERR_BADCHANNAME,
506 form_str(ERR_BADCHANNAME), forward);
507 return false;
508 }
509 if(MyClient(source_p) && (targptr = find_channel(forward)) == NULL)
510 {
511 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
512 form_str(ERR_NOSUCHCHANNEL), forward);
513 return false;
514 }
515 if(MyClient(source_p) && !(targptr->mode.mode & MODE_FREETARGET))
516 {
517 if((msptr = find_channel_membership(targptr, source_p)) == NULL ||
518 get_channel_access(source_p, targptr, msptr, MODE_QUERY, NULL) < CHFL_CHANOP)
519 {
520 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
521 me.name, source_p->name, targptr->chname);
522 return false;
523 }
524 }
525 return true;
526 }
527
528 /* fix_key()
529 *
530 * input - key to fix
531 * output - the same key, fixed
532 * side effects - anything below ascii 13 is discarded, ':' discarded,
533 * high ascii is dropped to lower half of ascii table
534 */
535 static char *
536 fix_key(char *arg)
537 {
538 unsigned char *s, *t, c;
539
540 for(s = t = (unsigned char *) arg; (c = *s); s++)
541 {
542 c &= 0x7f;
543 if(c != ':' && c != ',' && c > ' ')
544 *t++ = c;
545 }
546
547 *t = '\0';
548 return arg;
549 }
550
551 /* fix_key_remote()
552 *
553 * input - key to fix
554 * ouput - the same key, fixed
555 * side effects - high ascii dropped to lower half of table,
556 * CR/LF/':' are dropped
557 */
558 static char *
559 fix_key_remote(char *arg)
560 {
561 unsigned char *s, *t, c;
562
563 for(s = t = (unsigned char *) arg; (c = *s); s++)
564 {
565 c &= 0x7f;
566 if((c != 0x0a) && (c != ':') && (c != ',') && (c != 0x0d) && (c != ' '))
567 *t++ = c;
568 }
569
570 *t = '\0';
571 return arg;
572 }
573
574 /* chm_*()
575 *
576 * The handlers for each specific mode.
577 */
578 void
579 chm_nosuch(struct Client *source_p, struct Channel *chptr,
580 int alevel, int parc, int *parn,
581 const char **parv, int *errors, int dir, char c, long mode_type)
582 {
583 if(*errors & SM_ERR_UNKNOWN)
584 return;
585 *errors |= SM_ERR_UNKNOWN;
586 sendto_one(source_p, form_str(ERR_UNKNOWNMODE), me.name, source_p->name, c);
587 }
588
589 void
590 chm_simple(struct Client *source_p, struct Channel *chptr,
591 int alevel, int parc, int *parn,
592 const char **parv, int *errors, int dir, char c, long mode_type)
593 {
594 if(!allow_mode_change(source_p, chptr, alevel, errors, c))
595 return;
596
597 if(MyClient(source_p) && (++mode_limit_simple > MAXMODES_SIMPLE))
598 return;
599
600 /* setting + */
601 if((dir == MODE_ADD) && !(chptr->mode.mode & mode_type))
602 {
603 /* if +f is disabled, ignore an attempt to set +QF locally */
604 if(!ConfigChannel.use_forward && MyClient(source_p) &&
605 (c == 'Q' || c == 'F'))
606 return;
607
608 chptr->mode.mode |= mode_type;
609
610 mode_changes[mode_count].letter = c;
611 mode_changes[mode_count].dir = MODE_ADD;
612 mode_changes[mode_count].id = NULL;
613 mode_changes[mode_count].mems = ALL_MEMBERS;
614 mode_changes[mode_count++].arg = NULL;
615 }
616 else if((dir == MODE_DEL) && (chptr->mode.mode & mode_type))
617 {
618 chptr->mode.mode &= ~mode_type;
619
620 mode_changes[mode_count].letter = c;
621 mode_changes[mode_count].dir = MODE_DEL;
622 mode_changes[mode_count].mems = ALL_MEMBERS;
623 mode_changes[mode_count].id = NULL;
624 mode_changes[mode_count++].arg = NULL;
625 }
626 }
627
628 void
629 chm_orphaned(struct Client *source_p, struct Channel *chptr,
630 int alevel, int parc, int *parn,
631 const char **parv, int *errors, int dir, char c, long mode_type)
632 {
633 if(MyClient(source_p))
634 return;
635
636 if((dir == MODE_ADD) && !(chptr->mode.mode & mode_type))
637 {
638 chptr->mode.mode |= mode_type;
639
640 mode_changes[mode_count].letter = c;
641 mode_changes[mode_count].dir = MODE_ADD;
642 mode_changes[mode_count].id = NULL;
643 mode_changes[mode_count].mems = ALL_MEMBERS;
644 mode_changes[mode_count++].arg = NULL;
645 }
646 else if((dir == MODE_DEL) && (chptr->mode.mode & mode_type))
647 {
648 chptr->mode.mode &= ~mode_type;
649
650 mode_changes[mode_count].letter = c;
651 mode_changes[mode_count].dir = MODE_DEL;
652 mode_changes[mode_count].mems = ALL_MEMBERS;
653 mode_changes[mode_count].id = NULL;
654 mode_changes[mode_count++].arg = NULL;
655 }
656 }
657
658 void
659 chm_hidden(struct Client *source_p, struct Channel *chptr,
660 int alevel, int parc, int *parn,
661 const char **parv, int *errors, int dir, char c, long mode_type)
662 {
663 if(!IsOper(source_p) && !IsServer(source_p))
664 {
665 if(!(*errors & SM_ERR_NOPRIVS))
666 sendto_one_numeric(source_p, ERR_NOPRIVILEGES, form_str(ERR_NOPRIVILEGES));
667 *errors |= SM_ERR_NOPRIVS;
668 return;
669 }
670 if(MyClient(source_p) && !IsOperAdmin(source_p))
671 {
672 if(!(*errors & SM_ERR_NOPRIVS))
673 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name,
674 source_p->name, "admin");
675 *errors |= SM_ERR_NOPRIVS;
676 return;
677 }
678
679 if(MyClient(source_p) && (++mode_limit_simple > MAXMODES_SIMPLE))
680 return;
681
682 /* setting + */
683 if((dir == MODE_ADD) && !(chptr->mode.mode & mode_type))
684 {
685 chptr->mode.mode |= mode_type;
686
687 mode_changes[mode_count].letter = c;
688 mode_changes[mode_count].dir = MODE_ADD;
689 mode_changes[mode_count].id = NULL;
690 mode_changes[mode_count].mems = ONLY_OPERS;
691 mode_changes[mode_count++].arg = NULL;
692 }
693 else if((dir == MODE_DEL) && (chptr->mode.mode & mode_type))
694 {
695 chptr->mode.mode &= ~mode_type;
696
697 mode_changes[mode_count].letter = c;
698 mode_changes[mode_count].dir = MODE_DEL;
699 mode_changes[mode_count].mems = ONLY_OPERS;
700 mode_changes[mode_count].id = NULL;
701 mode_changes[mode_count++].arg = NULL;
702 }
703 }
704
705 void
706 chm_staff(struct Client *source_p, struct Channel *chptr,
707 int alevel, int parc, int *parn,
708 const char **parv, int *errors, int dir, char c, long mode_type)
709 {
710 if(!IsOper(source_p) && !IsServer(source_p))
711 {
712 if(!(*errors & SM_ERR_NOPRIVS))
713 sendto_one_numeric(source_p, ERR_NOPRIVILEGES, form_str(ERR_NOPRIVILEGES));
714 *errors |= SM_ERR_NOPRIVS;
715 return;
716 }
717 if(MyClient(source_p) && !IsOperResv(source_p))
718 {
719 if(!(*errors & SM_ERR_NOPRIVS))
720 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name,
721 source_p->name, "resv");
722 *errors |= SM_ERR_NOPRIVS;
723 return;
724 }
725
726 if(!allow_mode_change(source_p, chptr, CHFL_CHANOP, errors, c))
727 return;
728
729 if(MyClient(source_p) && (++mode_limit_simple > MAXMODES_SIMPLE))
730 return;
731
732 /* setting + */
733 if((dir == MODE_ADD) && !(chptr->mode.mode & mode_type))
734 {
735 chptr->mode.mode |= mode_type;
736
737 mode_changes[mode_count].letter = c;
738 mode_changes[mode_count].dir = MODE_ADD;
739 mode_changes[mode_count].id = NULL;
740 mode_changes[mode_count].mems = ALL_MEMBERS;
741 mode_changes[mode_count++].arg = NULL;
742 }
743 else if((dir == MODE_DEL) && (chptr->mode.mode & mode_type))
744 {
745 chptr->mode.mode &= ~mode_type;
746
747 mode_changes[mode_count].letter = c;
748 mode_changes[mode_count].dir = MODE_DEL;
749 mode_changes[mode_count].mems = ALL_MEMBERS;
750 mode_changes[mode_count].id = NULL;
751 mode_changes[mode_count++].arg = NULL;
752 }
753 }
754
755 void
756 chm_ban(struct Client *source_p, struct Channel *chptr,
757 int alevel, int parc, int *parn,
758 const char **parv, int *errors, int dir, char c, long mode_type)
759 {
760 const char *mask, *raw_mask;
761 char *forward;
762 rb_dlink_list *list;
763 rb_dlink_node *ptr;
764 struct Ban *banptr;
765 int errorval;
766 const char *rpl_list_p;
767 const char *rpl_endlist_p;
768 int mems;
769
770 switch (mode_type)
771 {
772 case CHFL_BAN:
773 list = &chptr->banlist;
774 errorval = SM_ERR_RPL_B;
775 rpl_list_p = form_str(RPL_BANLIST);
776 rpl_endlist_p = form_str(RPL_ENDOFBANLIST);
777 mems = ALL_MEMBERS;
778 break;
779
780 case CHFL_EXCEPTION:
781 /* if +e is disabled, allow all but +e locally */
782 if(!ConfigChannel.use_except && MyClient(source_p) &&
783 ((dir == MODE_ADD) && (parc > *parn)))
784 return;
785
786 list = &chptr->exceptlist;
787 errorval = SM_ERR_RPL_E;
788 rpl_list_p = form_str(RPL_EXCEPTLIST);
789 rpl_endlist_p = form_str(RPL_ENDOFEXCEPTLIST);
790
791 if(ConfigChannel.use_except || (dir == MODE_DEL))
792 mems = ONLY_CHANOPS;
793 else
794 mems = ONLY_SERVERS;
795 break;
796
797 case CHFL_INVEX:
798 /* if +I is disabled, allow all but +I locally */
799 if(!ConfigChannel.use_invex && MyClient(source_p) &&
800 (dir == MODE_ADD) && (parc > *parn))
801 return;
802
803 list = &chptr->invexlist;
804 errorval = SM_ERR_RPL_I;
805 rpl_list_p = form_str(RPL_INVITELIST);
806 rpl_endlist_p = form_str(RPL_ENDOFINVITELIST);
807
808 if(ConfigChannel.use_invex || (dir == MODE_DEL))
809 mems = ONLY_CHANOPS;
810 else
811 mems = ONLY_SERVERS;
812 break;
813
814 case CHFL_QUIET:
815 list = &chptr->quietlist;
816 errorval = SM_ERR_RPL_Q;
817 rpl_list_p = form_str(RPL_QUIETLIST);
818 rpl_endlist_p = form_str(RPL_ENDOFQUIETLIST);
819 mems = ALL_MEMBERS;
820 break;
821
822 default:
823 sendto_realops_snomask(SNO_GENERAL, L_ALL, "chm_ban() called with unknown type!");
824 return;
825 }
826
827 if(dir == 0 || parc <= *parn)
828 {
829 if((*errors & errorval) != 0)
830 return;
831 *errors |= errorval;
832
833 /* non-ops cant see +eI lists.. */
834 /* note that this is still permitted if +e/+I are mlocked. */
835 if(alevel < CHFL_CHANOP && mode_type != CHFL_BAN &&
836 mode_type != CHFL_QUIET)
837 {
838 if(!(*errors & SM_ERR_NOOPS))
839 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
840 me.name, source_p->name, chptr->chname);
841 *errors |= SM_ERR_NOOPS;
842 return;
843 }
844
845 RB_DLINK_FOREACH(ptr, list->head)
846 {
847 char buf[BANLEN];
848 banptr = ptr->data;
849 if(banptr->forward)
850 snprintf(buf, sizeof(buf), "%s$%s", banptr->banstr, banptr->forward);
851 else
852 rb_strlcpy(buf, banptr->banstr, sizeof(buf));
853
854 sendto_one(source_p, rpl_list_p,
855 me.name, source_p->name, chptr->chname,
856 buf, banptr->who, banptr->when);
857 }
858 sendto_one(source_p, rpl_endlist_p, me.name, source_p->name, chptr->chname);
859 return;
860 }
861
862 if(!allow_mode_change(source_p, chptr, alevel, errors, c))
863 return;
864
865
866 if(MyClient(source_p) && (++mode_limit > MAXMODEPARAMS))
867 return;
868
869 raw_mask = parv[(*parn)];
870 (*parn)++;
871
872 /* empty ban, or starts with ':' which messes up s2s, ignore it */
873 if(EmptyString(raw_mask) || *raw_mask == ':')
874 return;
875
876 if(!MyClient(source_p))
877 {
878 if(strchr(raw_mask, ' '))
879 return;
880
881 mask = raw_mask;
882 }
883 else
884 mask = pretty_mask(raw_mask);
885
886 /* we'd have problems parsing this, hyb6 does it too
887 * also make sure it will always fit on a line with channel
888 * name etc.
889 */
890 if(strlen(mask) > MIN(BANLEN, MODEBUFLEN - 5))
891 {
892 sendto_one_numeric(source_p, ERR_INVALIDBAN,
893 form_str(ERR_INVALIDBAN),
894 chptr->chname, c, raw_mask);
895 return;
896 }
897
898 /* Look for a $ after the first character.
899 * As the first character, it marks an extban; afterwards
900 * it delimits a forward channel.
901 */
902 if ((forward = strchr(mask+1, '$')) != NULL)
903 {
904 *forward++ = '\0';
905 if (*forward == '\0')
906 forward = NULL;
907 }
908
909 /* if we're adding a NEW id */
910 if(dir == MODE_ADD)
911 {
912 if (*mask == '$' && MyClient(source_p))
913 {
914 if (!valid_extban(mask, source_p, chptr, mode_type))
915 {
916 sendto_one_numeric(source_p, ERR_INVALIDBAN,
917 form_str(ERR_INVALIDBAN),
918 chptr->chname, c, raw_mask);
919 return;
920 }
921 }
922
923 /* For compatibility, only check the forward channel from
924 * local clients. Accept any forward channel from servers.
925 */
926 if(forward != NULL && MyClient(source_p))
927 {
928 /* For simplicity and future flexibility, do not
929 * allow '$' in forwarding targets.
930 */
931 if(!ConfigChannel.use_forward ||
932 strchr(forward, '$') != NULL)
933 {
934 sendto_one_numeric(source_p, ERR_INVALIDBAN,
935 form_str(ERR_INVALIDBAN),
936 chptr->chname, c, raw_mask);
937 return;
938 }
939 /* check_forward() sends its own error message */
940 if(!check_forward(source_p, chptr, forward))
941 return;
942 /* Forwards only make sense for bans. */
943 if(mode_type != CHFL_BAN)
944 {
945 sendto_one_numeric(source_p, ERR_INVALIDBAN,
946 form_str(ERR_INVALIDBAN),
947 chptr->chname, c, raw_mask);
948 return;
949 }
950 }
951
952 /* dont allow local clients to overflow the banlist, dont
953 * let remote servers set duplicate bans
954 */
955 if(!add_id(source_p, chptr, mask, forward, list, mode_type))
956 return;
957
958 if(forward)
959 forward[-1]= '$';
960
961 mode_changes[mode_count].letter = c;
962 mode_changes[mode_count].dir = MODE_ADD;
963 mode_changes[mode_count].mems = mems;
964 mode_changes[mode_count].id = NULL;
965 mode_changes[mode_count++].arg = mask;
966 }
967 else if(dir == MODE_DEL)
968 {
969 struct Ban *removed;
970 static char buf[BANLEN * MAXMODEPARAMS];
971 int old_removed_mask_pos = removed_mask_pos;
972 if((removed = del_id(chptr, mask, list, mode_type)) == NULL)
973 {
974 /* mask isn't a valid ban, check raw_mask */
975 if((removed = del_id(chptr, raw_mask, list, mode_type)) != NULL)
976 mask = raw_mask;
977 }
978
979 if(removed && removed->forward)
980 removed_mask_pos += snprintf(buf + old_removed_mask_pos, sizeof(buf), "%s$%s", removed->banstr, removed->forward) + 1;
981 else
982 removed_mask_pos += rb_strlcpy(buf + old_removed_mask_pos, mask, sizeof(buf)) + 1;
983 if(removed)
984 {
985 free_ban(removed);
986 removed = NULL;
987 }
988
989 mode_changes[mode_count].letter = c;
990 mode_changes[mode_count].dir = MODE_DEL;
991 mode_changes[mode_count].mems = mems;
992 mode_changes[mode_count].id = NULL;
993 mode_changes[mode_count++].arg = buf + old_removed_mask_pos;
994 }
995 }
996
997 void
998 chm_op(struct Client *source_p, struct Channel *chptr,
999 int alevel, int parc, int *parn,
1000 const char **parv, int *errors, int dir, char c, long mode_type)
1001 {
1002 struct membership *mstptr;
1003 const char *opnick;
1004 struct Client *targ_p;
1005
1006 if(!allow_mode_change(source_p, chptr, alevel, errors, c))
1007 return;
1008
1009 if((dir == MODE_QUERY) || (parc <= *parn))
1010 return;
1011
1012 opnick = parv[(*parn)];
1013 (*parn)++;
1014
1015 /* empty nick */
1016 if(EmptyString(opnick))
1017 {
1018 sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), "*");
1019 return;
1020 }
1021
1022 if((targ_p = find_chasing(source_p, opnick, NULL)) == NULL)
1023 {
1024 return;
1025 }
1026
1027 mstptr = find_channel_membership(chptr, targ_p);
1028
1029 if(mstptr == NULL)
1030 {
1031 if(!(*errors & SM_ERR_NOTONCHANNEL) && MyClient(source_p))
1032 sendto_one_numeric(source_p, ERR_USERNOTINCHANNEL,
1033 form_str(ERR_USERNOTINCHANNEL), opnick, chptr->chname);
1034 *errors |= SM_ERR_NOTONCHANNEL;
1035 return;
1036 }
1037
1038 if(MyClient(source_p) && (++mode_limit > MAXMODEPARAMS))
1039 return;
1040
1041 if(dir == MODE_ADD)
1042 {
1043 if(targ_p == source_p && mstptr->flags & CHFL_CHANOP)
1044 return;
1045
1046 mode_changes[mode_count].letter = c;
1047 mode_changes[mode_count].dir = MODE_ADD;
1048 mode_changes[mode_count].mems = ALL_MEMBERS;
1049 mode_changes[mode_count].id = targ_p->id;
1050 mode_changes[mode_count++].arg = targ_p->name;
1051
1052 mstptr->flags |= CHFL_CHANOP;
1053 }
1054 else
1055 {
1056 if(MyClient(source_p) && IsService(targ_p))
1057 {
1058 sendto_one(source_p, form_str(ERR_ISCHANSERVICE),
1059 me.name, source_p->name, targ_p->name, chptr->chname);
1060 return;
1061 }
1062
1063 mode_changes[mode_count].letter = c;
1064 mode_changes[mode_count].dir = MODE_DEL;
1065 mode_changes[mode_count].mems = ALL_MEMBERS;
1066 mode_changes[mode_count].id = targ_p->id;
1067 mode_changes[mode_count++].arg = targ_p->name;
1068
1069 mstptr->flags &= ~CHFL_CHANOP;
1070 }
1071 }
1072
1073 void
1074 chm_voice(struct Client *source_p, struct Channel *chptr,
1075 int alevel, int parc, int *parn,
1076 const char **parv, int *errors, int dir, char c, long mode_type)
1077 {
1078 struct membership *mstptr;
1079 const char *opnick;
1080 struct Client *targ_p;
1081
1082 if(!allow_mode_change(source_p, chptr, alevel, errors, c))
1083 return;
1084
1085 if((dir == MODE_QUERY) || parc <= *parn)
1086 return;
1087
1088 opnick = parv[(*parn)];
1089 (*parn)++;
1090
1091 /* empty nick */
1092 if(EmptyString(opnick))
1093 {
1094 sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), "*");
1095 return;
1096 }
1097
1098 if((targ_p = find_chasing(source_p, opnick, NULL)) == NULL)
1099 {
1100 return;
1101 }
1102
1103 mstptr = find_channel_membership(chptr, targ_p);
1104
1105 if(mstptr == NULL)
1106 {
1107 if(!(*errors & SM_ERR_NOTONCHANNEL) && MyClient(source_p))
1108 sendto_one_numeric(source_p, ERR_USERNOTINCHANNEL,
1109 form_str(ERR_USERNOTINCHANNEL), opnick, chptr->chname);
1110 *errors |= SM_ERR_NOTONCHANNEL;
1111 return;
1112 }
1113
1114 if(MyClient(source_p) && (++mode_limit > MAXMODEPARAMS))
1115 return;
1116
1117 if(dir == MODE_ADD)
1118 {
1119 mode_changes[mode_count].letter = c;
1120 mode_changes[mode_count].dir = MODE_ADD;
1121 mode_changes[mode_count].mems = ALL_MEMBERS;
1122 mode_changes[mode_count].id = targ_p->id;
1123 mode_changes[mode_count++].arg = targ_p->name;
1124
1125 mstptr->flags |= CHFL_VOICE;
1126 }
1127 else
1128 {
1129 mode_changes[mode_count].letter = 'v';
1130 mode_changes[mode_count].dir = MODE_DEL;
1131 mode_changes[mode_count].mems = ALL_MEMBERS;
1132 mode_changes[mode_count].id = targ_p->id;
1133 mode_changes[mode_count++].arg = targ_p->name;
1134
1135 mstptr->flags &= ~CHFL_VOICE;
1136 }
1137 }
1138
1139 void
1140 chm_limit(struct Client *source_p, struct Channel *chptr,
1141 int alevel, int parc, int *parn,
1142 const char **parv, int *errors, int dir, char c, long mode_type)
1143 {
1144 const char *lstr;
1145 static char limitstr[30];
1146 int limit;
1147
1148 if(!allow_mode_change(source_p, chptr, alevel, errors, c))
1149 return;
1150
1151 if(dir == MODE_QUERY)
1152 return;
1153
1154 if(MyClient(source_p) && (++mode_limit_simple > MAXMODES_SIMPLE))
1155 return;
1156
1157 if((dir == MODE_ADD) && parc > *parn)
1158 {
1159 lstr = parv[(*parn)];
1160 (*parn)++;
1161
1162 if(EmptyString(lstr) || (limit = atoi(lstr)) <= 0)
1163 return;
1164
1165 sprintf(limitstr, "%d", limit);
1166
1167 mode_changes[mode_count].letter = c;
1168 mode_changes[mode_count].dir = MODE_ADD;
1169 mode_changes[mode_count].mems = ALL_MEMBERS;
1170 mode_changes[mode_count].id = NULL;
1171 mode_changes[mode_count++].arg = limitstr;
1172
1173 chptr->mode.limit = limit;
1174 }
1175 else if(dir == MODE_DEL)
1176 {
1177 if(!chptr->mode.limit)
1178 return;
1179
1180 chptr->mode.limit = 0;
1181
1182 mode_changes[mode_count].letter = c;
1183 mode_changes[mode_count].dir = MODE_DEL;
1184 mode_changes[mode_count].mems = ALL_MEMBERS;
1185 mode_changes[mode_count].id = NULL;
1186 mode_changes[mode_count++].arg = NULL;
1187 }
1188 }
1189
1190 void
1191 chm_throttle(struct Client *source_p, struct Channel *chptr,
1192 int alevel, int parc, int *parn,
1193 const char **parv, int *errors, int dir, char c, long mode_type)
1194 {
1195 int joins = 0, timeslice = 0;
1196
1197 if(!allow_mode_change(source_p, chptr, alevel, errors, c))
1198 return;
1199
1200 if(dir == MODE_QUERY)
1201 return;
1202
1203 if(MyClient(source_p) && (++mode_limit_simple > MAXMODES_SIMPLE))
1204 return;
1205
1206 if((dir == MODE_ADD) && parc > *parn)
1207 {
1208 if (sscanf(parv[(*parn)], "%d:%d", &joins, &timeslice) < 2)
1209 return;
1210
1211 if(joins <= 0 || timeslice <= 0)
1212 return;
1213
1214 mode_changes[mode_count].letter = c;
1215 mode_changes[mode_count].dir = MODE_ADD;
1216 mode_changes[mode_count].mems = ALL_MEMBERS;
1217 mode_changes[mode_count].id = NULL;
1218 mode_changes[mode_count++].arg = parv[(*parn)];
1219
1220 (*parn)++;
1221
1222 chptr->mode.join_num = joins;
1223 chptr->mode.join_time = timeslice;
1224 }
1225 else if(dir == MODE_DEL)
1226 {
1227 if(!chptr->mode.join_num)
1228 return;
1229
1230 chptr->mode.join_num = 0;
1231 chptr->mode.join_time = 0;
1232 chptr->join_count = 0;
1233 chptr->join_delta = 0;
1234
1235 mode_changes[mode_count].letter = c;
1236 mode_changes[mode_count].dir = MODE_DEL;
1237 mode_changes[mode_count].mems = ALL_MEMBERS;
1238 mode_changes[mode_count].id = NULL;
1239 mode_changes[mode_count++].arg = NULL;
1240 }
1241 }
1242
1243 void
1244 chm_forward(struct Client *source_p, struct Channel *chptr,
1245 int alevel, int parc, int *parn,
1246 const char **parv, int *errors, int dir, char c, long mode_type)
1247 {
1248 const char *forward;
1249
1250 /* if +f is disabled, ignore local attempts to set it */
1251 if(!ConfigChannel.use_forward && MyClient(source_p) &&
1252 (dir == MODE_ADD) && (parc > *parn))
1253 return;
1254
1255 if(dir == MODE_QUERY || (dir == MODE_ADD && parc <= *parn))
1256 {
1257 if (!(*errors & SM_ERR_RPL_F))
1258 {
1259 if (*chptr->mode.forward == '\0')
1260 sendto_one_notice(source_p, ":%s has no forward channel", chptr->chname);
1261 else
1262 sendto_one_notice(source_p, ":%s forward channel is %s", chptr->chname, chptr->mode.forward);
1263 *errors |= SM_ERR_RPL_F;
1264 }
1265 return;
1266 }
1267
1268 #ifndef FORWARD_OPERONLY
1269 if(!allow_mode_change(source_p, chptr, alevel, errors, c))
1270 return;
1271 #else
1272 if(!IsOper(source_p) && !IsServer(source_p))
1273 {
1274 if(!(*errors & SM_ERR_NOPRIVS))
1275 sendto_one_numeric(source_p, ERR_NOPRIVILEGES, form_str(ERR_NOPRIVILEGES));
1276 *errors |= SM_ERR_NOPRIVS;
1277 return;
1278 }
1279 #endif
1280
1281 if(MyClient(source_p) && (++mode_limit_simple > MAXMODES_SIMPLE))
1282 return;
1283
1284 if(dir == MODE_ADD && parc > *parn)
1285 {
1286 forward = parv[(*parn)];
1287 (*parn)++;
1288
1289 if(EmptyString(forward))
1290 return;
1291
1292 if(!check_forward(source_p, chptr, forward))
1293 return;
1294
1295 rb_strlcpy(chptr->mode.forward, forward, sizeof(chptr->mode.forward));
1296
1297 mode_changes[mode_count].letter = c;
1298 mode_changes[mode_count].dir = MODE_ADD;
1299 mode_changes[mode_count].mems =
1300 ConfigChannel.use_forward ? ALL_MEMBERS : ONLY_SERVERS;
1301 mode_changes[mode_count].id = NULL;
1302 mode_changes[mode_count++].arg = forward;
1303 }
1304 else if(dir == MODE_DEL)
1305 {
1306 if(!(*chptr->mode.forward))
1307 return;
1308
1309 *chptr->mode.forward = '\0';
1310
1311 mode_changes[mode_count].letter = c;
1312 mode_changes[mode_count].dir = MODE_DEL;
1313 mode_changes[mode_count].mems = ALL_MEMBERS;
1314 mode_changes[mode_count].id = NULL;
1315 mode_changes[mode_count++].arg = NULL;
1316 }
1317 }
1318
1319 void
1320 chm_key(struct Client *source_p, struct Channel *chptr,
1321 int alevel, int parc, int *parn,
1322 const char **parv, int *errors, int dir, char c, long mode_type)
1323 {
1324 char *key;
1325
1326 if(!allow_mode_change(source_p, chptr, alevel, errors, c))
1327 return;
1328
1329 if(dir == MODE_QUERY)
1330 return;
1331
1332 if(MyClient(source_p) && (++mode_limit_simple > MAXMODES_SIMPLE))
1333 return;
1334
1335 if((dir == MODE_ADD) && parc > *parn)
1336 {
1337 key = LOCAL_COPY(parv[(*parn)]);
1338 (*parn)++;
1339
1340 if(MyClient(source_p))
1341 fix_key(key);
1342 else
1343 fix_key_remote(key);
1344
1345 if(EmptyString(key))
1346 return;
1347
1348 s_assert(key[0] != ' ');
1349 rb_strlcpy(chptr->mode.key, key, sizeof(chptr->mode.key));
1350
1351 mode_changes[mode_count].letter = c;
1352 mode_changes[mode_count].dir = MODE_ADD;
1353 mode_changes[mode_count].mems = ALL_MEMBERS;
1354 mode_changes[mode_count].id = NULL;
1355 mode_changes[mode_count++].arg = chptr->mode.key;
1356 }
1357 else if(dir == MODE_DEL)
1358 {
1359 static char splat[] = "*";
1360 int i;
1361
1362 if(parc > *parn)
1363 (*parn)++;
1364
1365 if(!(*chptr->mode.key))
1366 return;
1367
1368 /* hack time. when we get a +k-k mode, the +k arg is
1369 * chptr->mode.key, which the -k sets to \0, so hunt for a
1370 * +k when we get a -k, and set the arg to splat. --anfl
1371 */
1372 for(i = 0; i < mode_count; i++)
1373 {
1374 if(mode_changes[i].letter == 'k' && mode_changes[i].dir == MODE_ADD)
1375 mode_changes[i].arg = splat;
1376 }
1377
1378 *chptr->mode.key = 0;
1379
1380 mode_changes[mode_count].letter = c;
1381 mode_changes[mode_count].dir = MODE_DEL;
1382 mode_changes[mode_count].mems = ALL_MEMBERS;
1383 mode_changes[mode_count].id = NULL;
1384 mode_changes[mode_count++].arg = "*";
1385 }
1386 }
1387
1388 /* *INDENT-OFF* */
1389 struct ChannelMode chmode_table[256] =
1390 {
1391 {chm_nosuch, 0 }, /* 0x00 */
1392 {chm_nosuch, 0 }, /* 0x01 */
1393 {chm_nosuch, 0 }, /* 0x02 */
1394 {chm_nosuch, 0 }, /* 0x03 */
1395 {chm_nosuch, 0 }, /* 0x04 */
1396 {chm_nosuch, 0 }, /* 0x05 */
1397 {chm_nosuch, 0 }, /* 0x06 */
1398 {chm_nosuch, 0 }, /* 0x07 */
1399 {chm_nosuch, 0 }, /* 0x08 */
1400 {chm_nosuch, 0 }, /* 0x09 */
1401 {chm_nosuch, 0 }, /* 0x0a */
1402 {chm_nosuch, 0 }, /* 0x0b */
1403 {chm_nosuch, 0 }, /* 0x0c */
1404 {chm_nosuch, 0 }, /* 0x0d */
1405 {chm_nosuch, 0 }, /* 0x0e */
1406 {chm_nosuch, 0 }, /* 0x0f */
1407 {chm_nosuch, 0 }, /* 0x10 */
1408 {chm_nosuch, 0 }, /* 0x11 */
1409 {chm_nosuch, 0 }, /* 0x12 */
1410 {chm_nosuch, 0 }, /* 0x13 */
1411 {chm_nosuch, 0 }, /* 0x14 */
1412 {chm_nosuch, 0 }, /* 0x15 */
1413 {chm_nosuch, 0 }, /* 0x16 */
1414 {chm_nosuch, 0 }, /* 0x17 */
1415 {chm_nosuch, 0 }, /* 0x18 */
1416 {chm_nosuch, 0 }, /* 0x19 */
1417 {chm_nosuch, 0 }, /* 0x1a */
1418 {chm_nosuch, 0 }, /* 0x1b */
1419 {chm_nosuch, 0 }, /* 0x1c */
1420 {chm_nosuch, 0 }, /* 0x1d */
1421 {chm_nosuch, 0 }, /* 0x1e */
1422 {chm_nosuch, 0 }, /* 0x1f */
1423 {chm_nosuch, 0 }, /* 0x20 */
1424 {chm_nosuch, 0 }, /* 0x21 */
1425 {chm_nosuch, 0 }, /* 0x22 */
1426 {chm_nosuch, 0 }, /* 0x23 */
1427 {chm_nosuch, 0 }, /* 0x24 */
1428 {chm_nosuch, 0 }, /* 0x25 */
1429 {chm_nosuch, 0 }, /* 0x26 */
1430 {chm_nosuch, 0 }, /* 0x27 */
1431 {chm_nosuch, 0 }, /* 0x28 */
1432 {chm_nosuch, 0 }, /* 0x29 */
1433 {chm_nosuch, 0 }, /* 0x2a */
1434 {chm_nosuch, 0 }, /* 0x2b */
1435 {chm_nosuch, 0 }, /* 0x2c */
1436 {chm_nosuch, 0 }, /* 0x2d */
1437 {chm_nosuch, 0 }, /* 0x2e */
1438 {chm_nosuch, 0 }, /* 0x2f */
1439 {chm_nosuch, 0 }, /* 0x30 */
1440 {chm_nosuch, 0 }, /* 0x31 */
1441 {chm_nosuch, 0 }, /* 0x32 */
1442 {chm_nosuch, 0 }, /* 0x33 */
1443 {chm_nosuch, 0 }, /* 0x34 */
1444 {chm_nosuch, 0 }, /* 0x35 */
1445 {chm_nosuch, 0 }, /* 0x36 */
1446 {chm_nosuch, 0 }, /* 0x37 */
1447 {chm_nosuch, 0 }, /* 0x38 */
1448 {chm_nosuch, 0 }, /* 0x39 */
1449 {chm_nosuch, 0 }, /* 0x3a */
1450 {chm_nosuch, 0 }, /* 0x3b */
1451 {chm_nosuch, 0 }, /* 0x3c */
1452 {chm_nosuch, 0 }, /* 0x3d */
1453 {chm_nosuch, 0 }, /* 0x3e */
1454 {chm_nosuch, 0 }, /* 0x3f */
1455
1456 {chm_nosuch, 0 }, /* @ */
1457 {chm_nosuch, 0 }, /* A */
1458 {chm_nosuch, 0 }, /* B */
1459 {chm_nosuch, 0 }, /* C */
1460 {chm_nosuch, 0 }, /* D */
1461 {chm_nosuch, 0 }, /* E */
1462 {chm_simple, MODE_FREETARGET }, /* F */
1463 {chm_nosuch, 0 }, /* G */
1464 {chm_nosuch, 0 }, /* H */
1465 {chm_ban, CHFL_INVEX }, /* I */
1466 {chm_nosuch, 0 }, /* J */
1467 {chm_nosuch, 0 }, /* K */
1468 {chm_staff, MODE_EXLIMIT }, /* L */
1469 {chm_nosuch, 0 }, /* M */
1470 {chm_nosuch, 0 }, /* N */
1471 {chm_nosuch, 0 }, /* O */
1472 {chm_staff, MODE_PERMANENT }, /* P */
1473 {chm_simple, MODE_DISFORWARD }, /* Q */
1474 {chm_nosuch, 0 }, /* R */
1475 {chm_nosuch, 0 }, /* S */
1476 {chm_nosuch, 0 }, /* T */
1477 {chm_nosuch, 0 }, /* U */
1478 {chm_nosuch, 0 }, /* V */
1479 {chm_nosuch, 0 }, /* W */
1480 {chm_nosuch, 0 }, /* X */
1481 {chm_nosuch, 0 }, /* Y */
1482 {chm_nosuch, 0 }, /* Z */
1483 {chm_nosuch, 0 },
1484 {chm_nosuch, 0 },
1485 {chm_nosuch, 0 },
1486 {chm_nosuch, 0 },
1487 {chm_nosuch, 0 },
1488 {chm_nosuch, 0 },
1489 {chm_nosuch, 0 }, /* a */
1490 {chm_ban, CHFL_BAN }, /* b */
1491 {chm_nosuch, 0 }, /* c */
1492 {chm_nosuch, 0 }, /* d */
1493 {chm_ban, CHFL_EXCEPTION }, /* e */
1494 {chm_forward, 0 }, /* f */
1495 {chm_simple, MODE_FREEINVITE }, /* g */
1496 {chm_nosuch, 0 }, /* h */
1497 {chm_simple, MODE_INVITEONLY }, /* i */
1498 {chm_throttle, 0 }, /* j */
1499 {chm_key, 0 }, /* k */
1500 {chm_limit, 0 }, /* l */
1501 {chm_simple, MODE_MODERATED }, /* m */
1502 {chm_simple, MODE_NOPRIVMSGS }, /* n */
1503 {chm_op, 0 }, /* o */
1504 {chm_simple, MODE_PRIVATE }, /* p */
1505 {chm_ban, CHFL_QUIET }, /* q */
1506 {chm_simple, MODE_REGONLY }, /* r */
1507 {chm_simple, MODE_SECRET }, /* s */
1508 {chm_simple, MODE_TOPICLIMIT }, /* t */
1509 {chm_nosuch, 0 }, /* u */
1510 {chm_voice, 0 }, /* v */
1511 {chm_nosuch, 0 }, /* w */
1512 {chm_nosuch, 0 }, /* x */
1513 {chm_nosuch, 0 }, /* y */
1514 {chm_simple, MODE_OPMODERATE }, /* z */
1515
1516 {chm_nosuch, 0 }, /* 0x7b */
1517 {chm_nosuch, 0 }, /* 0x7c */
1518 {chm_nosuch, 0 }, /* 0x7d */
1519 {chm_nosuch, 0 }, /* 0x7e */
1520 {chm_nosuch, 0 }, /* 0x7f */
1521
1522 {chm_nosuch, 0 }, /* 0x80 */
1523 {chm_nosuch, 0 }, /* 0x81 */
1524 {chm_nosuch, 0 }, /* 0x82 */
1525 {chm_nosuch, 0 }, /* 0x83 */
1526 {chm_nosuch, 0 }, /* 0x84 */
1527 {chm_nosuch, 0 }, /* 0x85 */
1528 {chm_nosuch, 0 }, /* 0x86 */
1529 {chm_nosuch, 0 }, /* 0x87 */
1530 {chm_nosuch, 0 }, /* 0x88 */
1531 {chm_nosuch, 0 }, /* 0x89 */
1532 {chm_nosuch, 0 }, /* 0x8a */
1533 {chm_nosuch, 0 }, /* 0x8b */
1534 {chm_nosuch, 0 }, /* 0x8c */
1535 {chm_nosuch, 0 }, /* 0x8d */
1536 {chm_nosuch, 0 }, /* 0x8e */
1537 {chm_nosuch, 0 }, /* 0x8f */
1538
1539 {chm_nosuch, 0 }, /* 0x90 */
1540 {chm_nosuch, 0 }, /* 0x91 */
1541 {chm_nosuch, 0 }, /* 0x92 */
1542 {chm_nosuch, 0 }, /* 0x93 */
1543 {chm_nosuch, 0 }, /* 0x94 */
1544 {chm_nosuch, 0 }, /* 0x95 */
1545 {chm_nosuch, 0 }, /* 0x96 */
1546 {chm_nosuch, 0 }, /* 0x97 */
1547 {chm_nosuch, 0 }, /* 0x98 */
1548 {chm_nosuch, 0 }, /* 0x99 */
1549 {chm_nosuch, 0 }, /* 0x9a */
1550 {chm_nosuch, 0 }, /* 0x9b */
1551 {chm_nosuch, 0 }, /* 0x9c */
1552 {chm_nosuch, 0 }, /* 0x9d */
1553 {chm_nosuch, 0 }, /* 0x9e */
1554 {chm_nosuch, 0 }, /* 0x9f */
1555
1556 {chm_nosuch, 0 }, /* 0xa0 */
1557 {chm_nosuch, 0 }, /* 0xa1 */
1558 {chm_nosuch, 0 }, /* 0xa2 */
1559 {chm_nosuch, 0 }, /* 0xa3 */
1560 {chm_nosuch, 0 }, /* 0xa4 */
1561 {chm_nosuch, 0 }, /* 0xa5 */
1562 {chm_nosuch, 0 }, /* 0xa6 */
1563 {chm_nosuch, 0 }, /* 0xa7 */
1564 {chm_nosuch, 0 }, /* 0xa8 */
1565 {chm_nosuch, 0 }, /* 0xa9 */
1566 {chm_nosuch, 0 }, /* 0xaa */
1567 {chm_nosuch, 0 }, /* 0xab */
1568 {chm_nosuch, 0 }, /* 0xac */
1569 {chm_nosuch, 0 }, /* 0xad */
1570 {chm_nosuch, 0 }, /* 0xae */
1571 {chm_nosuch, 0 }, /* 0xaf */
1572
1573 {chm_nosuch, 0 }, /* 0xb0 */
1574 {chm_nosuch, 0 }, /* 0xb1 */
1575 {chm_nosuch, 0 }, /* 0xb2 */
1576 {chm_nosuch, 0 }, /* 0xb3 */
1577 {chm_nosuch, 0 }, /* 0xb4 */
1578 {chm_nosuch, 0 }, /* 0xb5 */
1579 {chm_nosuch, 0 }, /* 0xb6 */
1580 {chm_nosuch, 0 }, /* 0xb7 */
1581 {chm_nosuch, 0 }, /* 0xb8 */
1582 {chm_nosuch, 0 }, /* 0xb9 */
1583 {chm_nosuch, 0 }, /* 0xba */
1584 {chm_nosuch, 0 }, /* 0xbb */
1585 {chm_nosuch, 0 }, /* 0xbc */
1586 {chm_nosuch, 0 }, /* 0xbd */
1587 {chm_nosuch, 0 }, /* 0xbe */
1588 {chm_nosuch, 0 }, /* 0xbf */
1589
1590 {chm_nosuch, 0 }, /* 0xc0 */
1591 {chm_nosuch, 0 }, /* 0xc1 */
1592 {chm_nosuch, 0 }, /* 0xc2 */
1593 {chm_nosuch, 0 }, /* 0xc3 */
1594 {chm_nosuch, 0 }, /* 0xc4 */
1595 {chm_nosuch, 0 }, /* 0xc5 */
1596 {chm_nosuch, 0 }, /* 0xc6 */
1597 {chm_nosuch, 0 }, /* 0xc7 */
1598 {chm_nosuch, 0 }, /* 0xc8 */
1599 {chm_nosuch, 0 }, /* 0xc9 */
1600 {chm_nosuch, 0 }, /* 0xca */
1601 {chm_nosuch, 0 }, /* 0xcb */
1602 {chm_nosuch, 0 }, /* 0xcc */
1603 {chm_nosuch, 0 }, /* 0xcd */
1604 {chm_nosuch, 0 }, /* 0xce */
1605 {chm_nosuch, 0 }, /* 0xcf */
1606
1607 {chm_nosuch, 0 }, /* 0xd0 */
1608 {chm_nosuch, 0 }, /* 0xd1 */
1609 {chm_nosuch, 0 }, /* 0xd2 */
1610 {chm_nosuch, 0 }, /* 0xd3 */
1611 {chm_nosuch, 0 }, /* 0xd4 */
1612 {chm_nosuch, 0 }, /* 0xd5 */
1613 {chm_nosuch, 0 }, /* 0xd6 */
1614 {chm_nosuch, 0 }, /* 0xd7 */
1615 {chm_nosuch, 0 }, /* 0xd8 */
1616 {chm_nosuch, 0 }, /* 0xd9 */
1617 {chm_nosuch, 0 }, /* 0xda */
1618 {chm_nosuch, 0 }, /* 0xdb */
1619 {chm_nosuch, 0 }, /* 0xdc */
1620 {chm_nosuch, 0 }, /* 0xdd */
1621 {chm_nosuch, 0 }, /* 0xde */
1622 {chm_nosuch, 0 }, /* 0xdf */
1623
1624 {chm_nosuch, 0 }, /* 0xe0 */
1625 {chm_nosuch, 0 }, /* 0xe1 */
1626 {chm_nosuch, 0 }, /* 0xe2 */
1627 {chm_nosuch, 0 }, /* 0xe3 */
1628 {chm_nosuch, 0 }, /* 0xe4 */
1629 {chm_nosuch, 0 }, /* 0xe5 */
1630 {chm_nosuch, 0 }, /* 0xe6 */
1631 {chm_nosuch, 0 }, /* 0xe7 */
1632 {chm_nosuch, 0 }, /* 0xe8 */
1633 {chm_nosuch, 0 }, /* 0xe9 */
1634 {chm_nosuch, 0 }, /* 0xea */
1635 {chm_nosuch, 0 }, /* 0xeb */
1636 {chm_nosuch, 0 }, /* 0xec */
1637 {chm_nosuch, 0 }, /* 0xed */
1638 {chm_nosuch, 0 }, /* 0xee */
1639 {chm_nosuch, 0 }, /* 0xef */
1640
1641 {chm_nosuch, 0 }, /* 0xf0 */
1642 {chm_nosuch, 0 }, /* 0xf1 */
1643 {chm_nosuch, 0 }, /* 0xf2 */
1644 {chm_nosuch, 0 }, /* 0xf3 */
1645 {chm_nosuch, 0 }, /* 0xf4 */
1646 {chm_nosuch, 0 }, /* 0xf5 */
1647 {chm_nosuch, 0 }, /* 0xf6 */
1648 {chm_nosuch, 0 }, /* 0xf7 */
1649 {chm_nosuch, 0 }, /* 0xf8 */
1650 {chm_nosuch, 0 }, /* 0xf9 */
1651 {chm_nosuch, 0 }, /* 0xfa */
1652 {chm_nosuch, 0 }, /* 0xfb */
1653 {chm_nosuch, 0 }, /* 0xfc */
1654 {chm_nosuch, 0 }, /* 0xfd */
1655 {chm_nosuch, 0 }, /* 0xfe */
1656 {chm_nosuch, 0 }, /* 0xff */
1657 };
1658
1659 /* *INDENT-ON* */
1660
1661 /* set_channel_mode()
1662 *
1663 * inputs - client, source, channel, membership pointer, params
1664 * output -
1665 * side effects - channel modes/memberships are changed, MODE is issued
1666 *
1667 * Extensively modified to be hotpluggable, 03/09/06 -- nenolod
1668 */
1669 void
1670 set_channel_mode(struct Client *client_p, struct Client *source_p,
1671 struct Channel *chptr, struct membership *msptr, int parc, const char *parv[])
1672 {
1673 static char modebuf[BUFSIZE];
1674 static char parabuf[BUFSIZE];
1675 char *mbuf;
1676 char *pbuf;
1677 int cur_len, mlen, paralen, paracount, arglen, len;
1678 int i, j, flags;
1679 int dir = MODE_QUERY;
1680 int parn = 1;
1681 int errors = 0;
1682 int alevel;
1683 const char *ml = parv[0];
1684 char c;
1685 struct Client *fakesource_p;
1686 int reauthorized = 0; /* if we change from MODE_QUERY to MODE_ADD/MODE_DEL, then reauth once, ugly but it works */
1687 int flags_list[3] = { ALL_MEMBERS, ONLY_CHANOPS, ONLY_OPERS };
1688
1689 mask_pos = 0;
1690 removed_mask_pos = 0;
1691 mode_count = 0;
1692 mode_limit = 0;
1693 mode_limit_simple = 0;
1694
1695 /* Hide connecting server on netburst -- jilles */
1696 if (ConfigServerHide.flatten_links && IsServer(source_p) && !has_id(source_p) && !HasSentEob(source_p))
1697 fakesource_p = &me;
1698 else
1699 fakesource_p = source_p;
1700
1701 alevel = get_channel_access(source_p, chptr, msptr, dir, reconstruct_parv(parc, parv));
1702
1703 for(; (c = *ml) != 0; ml++)
1704 {
1705 switch (c)
1706 {
1707 case '+':
1708 dir = MODE_ADD;
1709 if (!reauthorized)
1710 {
1711 alevel = get_channel_access(source_p, chptr, msptr, dir, reconstruct_parv(parc, parv));
1712 reauthorized = 1;
1713 }
1714 break;
1715 case '-':
1716 dir = MODE_DEL;
1717 if (!reauthorized)
1718 {
1719 alevel = get_channel_access(source_p, chptr, msptr, dir, reconstruct_parv(parc, parv));
1720 reauthorized = 1;
1721 }
1722 break;
1723 case '=':
1724 dir = MODE_QUERY;
1725 break;
1726 default:
1727 chmode_table[(unsigned char) c].set_func(fakesource_p, chptr, alevel,
1728 parc, &parn, parv,
1729 &errors, dir, c,
1730 chmode_table[(unsigned char) c].mode_type);
1731 break;
1732 }
1733 }
1734
1735 /* bail out if we have nothing to do... */
1736 if(!mode_count)
1737 return;
1738
1739 if(IsServer(source_p))
1740 mlen = sprintf(modebuf, ":%s MODE %s ", fakesource_p->name, chptr->chname);
1741 else
1742 mlen = sprintf(modebuf, ":%s!%s@%s MODE %s ",
1743 source_p->name, source_p->username,
1744 source_p->host, chptr->chname);
1745
1746 for(j = 0; j < 3; j++)
1747 {
1748 flags = flags_list[j];
1749 cur_len = mlen;
1750 mbuf = modebuf + mlen;
1751 pbuf = parabuf;
1752 parabuf[0] = '\0';
1753 paracount = paralen = 0;
1754 dir = MODE_QUERY;
1755
1756 for(i = 0; i < mode_count; i++)
1757 {
1758 if(mode_changes[i].letter == 0 || mode_changes[i].mems != flags)
1759 continue;
1760
1761 if(mode_changes[i].arg != NULL)
1762 {
1763 arglen = strlen(mode_changes[i].arg);
1764
1765 if(arglen > MODEBUFLEN - 5)
1766 continue;
1767 }
1768 else
1769 arglen = 0;
1770
1771 /* if we're creeping over MAXMODEPARAMSSERV, or over
1772 * bufsize (4 == +/-,modechar,two spaces) send now.
1773 */
1774 if(mode_changes[i].arg != NULL &&
1775 ((paracount == MAXMODEPARAMSSERV) ||
1776 ((cur_len + paralen + arglen + 4) > (BUFSIZE - 3))))
1777 {
1778 *mbuf = '\0';
1779
1780 if(cur_len > mlen)
1781 sendto_channel_local(flags, chptr, "%s %s", modebuf,
1782 parabuf);
1783 else
1784 continue;
1785
1786 paracount = paralen = 0;
1787 cur_len = mlen;
1788 mbuf = modebuf + mlen;
1789 pbuf = parabuf;
1790 parabuf[0] = '\0';
1791 dir = MODE_QUERY;
1792 }
1793
1794 if(dir != mode_changes[i].dir)
1795 {
1796 *mbuf++ = (mode_changes[i].dir == MODE_ADD) ? '+' : '-';
1797 cur_len++;
1798 dir = mode_changes[i].dir;
1799 }
1800
1801 *mbuf++ = mode_changes[i].letter;
1802 cur_len++;
1803
1804 if(mode_changes[i].arg != NULL)
1805 {
1806 paracount++;
1807 len = sprintf(pbuf, "%s ", mode_changes[i].arg);
1808 pbuf += len;
1809 paralen += len;
1810 }
1811 }
1812
1813 if(paralen && parabuf[paralen - 1] == ' ')
1814 parabuf[paralen - 1] = '\0';
1815
1816 *mbuf = '\0';
1817 if(cur_len > mlen)
1818 sendto_channel_local(flags, chptr, "%s %s", modebuf, parabuf);
1819 }
1820
1821 /* only propagate modes originating locally, or if we're hubbing */
1822 if(MyClient(source_p) || rb_dlink_list_length(&serv_list) > 1)
1823 send_cap_mode_changes(client_p, source_p, chptr, mode_changes, mode_count);
1824 }
1825
1826 /* set_channel_mlock()
1827 *
1828 * inputs - client, source, channel, params
1829 * output -
1830 * side effects - channel mlock is changed / MLOCK is propagated
1831 */
1832 void
1833 set_channel_mlock(struct Client *client_p, struct Client *source_p,
1834 struct Channel *chptr, const char *newmlock, bool propagate)
1835 {
1836 rb_free(chptr->mode_lock);
1837 chptr->mode_lock = newmlock ? rb_strdup(newmlock) : NULL;
1838
1839 if (propagate)
1840 {
1841 sendto_server(client_p, NULL, CAP_TS6 | CAP_MLOCK, NOCAPS, ":%s MLOCK %ld %s :%s",
1842 source_p->id, (long) chptr->channelts, chptr->chname,
1843 chptr->mode_lock ? chptr->mode_lock : "");
1844 }
1845 }
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