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212380e3 1/*
2 * ircd-ratbox: A slightly useful ircd.
3 * m_join.c: Joins a channel.
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 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
22 * USA
23 *
bee3b671 24 * $Id: m_join.c 3211 2007-02-20 00:34:28Z jilles $
212380e3 25 */
26
27#include "stdinc.h"
28#include "tools.h"
29#include "channel.h"
30#include "client.h"
31#include "common.h"
32#include "hash.h"
33#include "irc_string.h"
34#include "ircd.h"
35#include "numeric.h"
36#include "send.h"
37#include "s_serv.h"
38#include "s_conf.h"
39#include "s_newconf.h"
40#include "msg.h"
41#include "parse.h"
42#include "modules.h"
43#include "sprintf_irc.h"
44#include "packet.h"
45
46static int m_join(struct Client *, struct Client *, int, const char **);
47static int ms_join(struct Client *, struct Client *, int, const char **);
48
49static int h_can_create_channel;
50static int h_channel_join;
51
52struct Message join_msgtab = {
53 "JOIN", 0, 0, 0, MFLG_SLOW,
54 {mg_unreg, {m_join, 2}, {ms_join, 2}, mg_ignore, mg_ignore, {m_join, 2}}
55};
56
57mapi_clist_av1 join_clist[] = { &join_msgtab, NULL };
58
59mapi_hlist_av1 join_hlist[] = {
60 { "can_create_channel", &h_can_create_channel },
61 { "channel_join", &h_channel_join },
62 { NULL, NULL },
63};
64
bee3b671 65DECLARE_MODULE_AV1(join, NULL, NULL, join_clist, join_hlist, NULL, "$Revision: 3211 $");
212380e3 66
67static void do_join_0(struct Client *client_p, struct Client *source_p);
68static int check_channel_name_loc(struct Client *source_p, const char *name);
69
70static void set_final_mode(struct Mode *mode, struct Mode *oldmode);
71static void remove_our_modes(struct Channel *chptr, struct Client *source_p);
72
73static char modebuf[MODEBUFLEN];
74static char parabuf[MODEBUFLEN];
75static char *mbuf;
76
77/* Check what we will forward to, without sending any notices to the user
78 * -- jilles
79 */
80static struct Channel *
81check_forward(struct Client *source_p, struct Channel *chptr,
82 char *key)
83{
84 int depth = 0, i;
85
86 /* User is +Q */
87 if (IsNoForward(source_p))
88 return NULL;
89
90 while (depth < 16)
91 {
92 chptr = find_channel(chptr->mode.forward);
93 /* Can only forward to existing channels */
94 if (chptr == NULL)
95 return NULL;
96 /* Already on there, show original error message */
97 if (IsMember(source_p, chptr))
98 return NULL;
99 /* Juped. Sending a warning notice would be unfair */
100 if (hash_find_resv(chptr->chname))
101 return NULL;
102 /* Don't forward to +Q channel */
103 if (chptr->mode.mode & MODE_DISFORWARD)
104 return NULL;
105 i = can_join(source_p, chptr, key);
106 if (i == 0)
107 return chptr;
108 if (i != ERR_INVITEONLYCHAN && i != ERR_NEEDREGGEDNICK && i != ERR_THROTTLE && i != ERR_CHANNELISFULL)
109 return NULL;
110 depth++;
111 }
112
113 return NULL;
114}
115
116/*
117 * m_join
118 * parv[0] = sender prefix
119 * parv[1] = channel
120 * parv[2] = channel password (key)
121 */
122static int
123m_join(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
124{
125 static char jbuf[BUFSIZE];
126 struct Channel *chptr = NULL;
127 struct ConfItem *aconf;
128 char *name;
129 char *key = NULL;
130 int i, flags = 0;
131 char *p = NULL, *p2 = NULL;
132 char *chanlist;
133 char *mykey;
134 int successful_join_count = 0; /* Number of channels successfully joined */
135
136 jbuf[0] = '\0';
137
138 /* rebuild the list of channels theyre supposed to be joining.
139 * this code has a side effect of losing keys, but..
140 */
141 chanlist = LOCAL_COPY(parv[1]);
142 for(name = strtoken(&p, chanlist, ","); name; name = strtoken(&p, NULL, ","))
143 {
144 /* check the length and name of channel is ok */
145 if(!check_channel_name_loc(source_p, name) || (strlen(name) > LOC_CHANNELLEN))
146 {
147 sendto_one_numeric(source_p, ERR_BADCHANNAME,
148 form_str(ERR_BADCHANNAME), (unsigned char *) name);
149 continue;
150 }
151
152 /* join 0 parts all channels */
153 if(*name == '0' && !atoi(name))
154 {
155 (void) strcpy(jbuf, "0");
156 continue;
157 }
158
159 /* check it begins with # or &, and local chans are disabled */
160 else if(!IsChannelName(name))
161 {
162 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
163 form_str(ERR_NOSUCHCHANNEL), name);
164 continue;
165 }
166
167 /* see if its resv'd */
168 if(!IsExemptResv(source_p) && (aconf = hash_find_resv(name)))
169 {
170 sendto_one_numeric(source_p, ERR_BADCHANNAME,
171 form_str(ERR_BADCHANNAME), name);
172
173 /* dont warn for opers */
174 if(!IsExemptJupe(source_p) && !IsOper(source_p))
175 sendto_realops_snomask(SNO_SPY, L_NETWIDE,
176 "User %s (%s@%s) is attempting to join locally juped channel %s (%s)",
177 source_p->name, source_p->username,
63aecfb9 178 source_p->orighost, name, aconf->passwd);
212380e3 179 /* dont update tracking for jupe exempt users, these
180 * are likely to be spamtrap leaves
181 */
182 else if(IsExemptJupe(source_p))
183 aconf->port--;
184
185 continue;
186 }
187
188 if(splitmode && !IsOper(source_p) && (*name != '&') &&
189 ConfigChannel.no_join_on_split)
190 {
191 sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
192 me.name, source_p->name, name);
193 continue;
194 }
195
196 if(*jbuf)
197 (void) strcat(jbuf, ",");
198 (void) strlcat(jbuf, name, sizeof(jbuf));
199 }
200
201 if(parc > 2)
202 {
203 mykey = LOCAL_COPY(parv[2]);
204 key = strtoken(&p2, mykey, ",");
205 }
206
207 for(name = strtoken(&p, jbuf, ","); name;
208 key = (key) ? strtoken(&p2, NULL, ",") : NULL, name = strtoken(&p, NULL, ","))
209 {
210 hook_data_channel_activity hook_info;
211
212 /* JOIN 0 simply parts all channels the user is in */
213 if(*name == '0' && !atoi(name))
214 {
215 if(source_p->user->channel.head == NULL)
216 continue;
217
218 do_join_0(&me, source_p);
219 continue;
220 }
221
222 /* look for the channel */
223 if((chptr = find_channel(name)) != NULL)
224 {
225 if(IsMember(source_p, chptr))
226 continue;
227
228 flags = 0;
229 }
230 else
231 {
232 hook_data_client_approval moduledata;
233
234 moduledata.client = source_p;
235 moduledata.approved = 0;
236
237 call_hook(h_can_create_channel, &moduledata);
238
239 if(moduledata.approved != 0 && !IsOper(source_p))
240 {
241 sendto_one(source_p, form_str(moduledata.approved),
242 me.name, source_p->name, name);
243 continue;
244 }
245
246 if(splitmode && !IsOper(source_p) && (*name != '&') &&
247 ConfigChannel.no_create_on_split)
248 {
249 sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
250 me.name, source_p->name, name);
251 continue;
252 }
253
254 flags = CHFL_CHANOP;
255 }
256
257 if((dlink_list_length(&source_p->user->channel) >=
258 (unsigned long) ConfigChannel.max_chans_per_user) &&
259 (!IsOper(source_p) ||
260 (dlink_list_length(&source_p->user->channel) >=
261 (unsigned long) ConfigChannel.max_chans_per_user * 3)))
262 {
263 sendto_one(source_p, form_str(ERR_TOOMANYCHANNELS),
264 me.name, source_p->name, name);
265 if(successful_join_count)
266 source_p->localClient->last_join_time = CurrentTime;
267 return 0;
268 }
269
270 if(flags == 0) /* if channel doesn't exist, don't penalize */
271 successful_join_count++;
272
273 if(chptr == NULL) /* If I already have a chptr, no point doing this */
274 {
275 chptr = get_or_create_channel(source_p, name, NULL);
276
277 if(chptr == NULL)
278 {
279 sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
280 me.name, source_p->name, name);
281 if(successful_join_count > 0)
282 successful_join_count--;
283 continue;
284 }
285 }
286
287 if(!IsOper(source_p) && !IsExemptSpambot(source_p))
288 check_spambot_warning(source_p, name);
289
290 /* can_join checks for +i key, bans etc */
291 if((i = can_join(source_p, chptr, key)))
292 {
293 if ((i != ERR_NEEDREGGEDNICK && i != ERR_THROTTLE && i != ERR_INVITEONLYCHAN && i != ERR_CHANNELISFULL) ||
294 (!ConfigChannel.use_forward || (chptr = check_forward(source_p, chptr, key)) == NULL))
295 {
296 sendto_one(source_p, form_str(i), me.name, source_p->name, name);
297 if(successful_join_count > 0)
298 successful_join_count--;
299 continue;
300 }
301 sendto_one_numeric(source_p, ERR_LINKCHANNEL, form_str(ERR_LINKCHANNEL), name, chptr->chname);
302 }
303
304 /* add the user to the channel */
305 add_user_to_channel(chptr, source_p, flags);
306 if (chptr->mode.join_num &&
307 CurrentTime - chptr->join_delta >= chptr->mode.join_time)
308 {
309 chptr->join_count = 0;
310 chptr->join_delta = CurrentTime;
311 }
312 chptr->join_count++;
313
314 /* we send the user their join here, because we could have to
315 * send a mode out next.
316 */
317 sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s JOIN :%s",
318 source_p->name,
319 source_p->username, source_p->host, chptr->chname);
320
321 /* its a new channel, set +nt and burst. */
322 if(flags & CHFL_CHANOP)
323 {
324 chptr->channelts = CurrentTime;
325 chptr->mode.mode |= MODE_TOPICLIMIT;
326 chptr->mode.mode |= MODE_NOPRIVMSGS;
327
328 sendto_channel_local(ONLY_CHANOPS, chptr, ":%s MODE %s +nt",
329 me.name, chptr->chname);
330
331 if(*chptr->chname == '#')
332 {
333 sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
334 ":%s SJOIN %ld %s +nt :@%s",
335 me.id, (long) chptr->channelts,
336 chptr->chname, source_p->id);
337 sendto_server(client_p, chptr, NOCAPS, CAP_TS6,
338 ":%s SJOIN %ld %s +nt :@%s",
339 me.name, (long) chptr->channelts,
340 chptr->chname, source_p->name);
341 }
342 }
343 else
344 {
212380e3 345 sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
bee3b671 346 ":%s JOIN %ld %s +",
212380e3 347 use_id(source_p), (long) chptr->channelts,
bee3b671 348 chptr->chname);
212380e3 349
350 sendto_server(client_p, chptr, NOCAPS, CAP_TS6,
bee3b671 351 ":%s SJOIN %ld %s + :%s",
212380e3 352 me.name, (long) chptr->channelts,
bee3b671 353 chptr->chname, source_p->name);
212380e3 354 }
355
356 del_invite(chptr, source_p);
357
358 if(chptr->topic != NULL)
359 {
360 sendto_one(source_p, form_str(RPL_TOPIC), me.name,
361 source_p->name, chptr->chname, chptr->topic);
362
363 sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
364 me.name, source_p->name, chptr->chname,
365 chptr->topic_info, chptr->topic_time);
366 }
367
368 channel_member_names(chptr, source_p, 1);
369
370 if(successful_join_count)
371 source_p->localClient->last_join_time = CurrentTime;
372
373 hook_info.client = source_p;
374 hook_info.chptr = chptr;
375 hook_info.key = key;
376 call_hook(h_channel_join, &hook_info);
377 }
378
379 return 0;
380}
381
382/*
383 * ms_join
384 *
385 * inputs -
386 * output - none
387 * side effects - handles remote JOIN's sent by servers. In TSora
388 * remote clients are joined using SJOIN, hence a
389 * JOIN sent by a server on behalf of a client is an error.
390 * here, the initial code is in to take an extra parameter
391 * and use it for the TimeStamp on a new channel.
392 */
393static int
394ms_join(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
395{
396 struct Channel *chptr;
bee3b671 397 static struct Mode mode;
212380e3 398 time_t oldts;
399 time_t newts;
400 int isnew;
212380e3 401 int keep_our_modes = YES;
402 int keep_new_modes = YES;
403 dlink_node *ptr, *next_ptr;
404
405 /* special case for join 0 */
406 if((parv[1][0] == '0') && (parv[1][1] == '\0') && parc == 2)
407 {
408 do_join_0(client_p, source_p);
409 return 0;
410 }
411
412 if(parc < 4)
413 return 0;
414
415 if(!IsChannelName(parv[2]) || !check_channel_name(parv[2]))
416 return 0;
417
418 /* joins for local channels cant happen. */
419 if(parv[2][0] == '&')
420 return 0;
421
422 mbuf = modebuf;
423 mode.key[0] = mode.forward[0] = '\0';
424 mode.mode = mode.limit = mode.join_num = mode.join_time = 0;
425
212380e3 426 if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL)
427 return 0;
428
429 newts = atol(parv[1]);
430 oldts = chptr->channelts;
212380e3 431
432#ifdef IGNORE_BOGUS_TS
433 if(newts < 800000000)
434 {
435 sendto_realops_snomask(SNO_DEBUG, L_ALL,
436 "*** Bogus TS %ld on %s ignored from %s",
437 (long) newts, chptr->chname, client_p->name);
438 newts = (oldts == 0) ? oldts : 800000000;
439 }
440#else
441 /* making a channel TS0 */
442 if(!isnew && !newts && oldts)
443 {
444 sendto_channel_local(ALL_MEMBERS, chptr,
445 ":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to 0",
446 me.name, chptr->chname, chptr->chname, (long) oldts);
447 sendto_realops_snomask(SNO_GENERAL, L_ALL,
448 "Server %s changing TS on %s from %ld to 0",
449 source_p->name, chptr->chname, (long) oldts);
450 }
451#endif
452
453 if(isnew)
454 chptr->channelts = newts;
455 else if(newts == 0 || oldts == 0)
456 chptr->channelts = 0;
457 else if(newts == oldts)
458 ;
459 else if(newts < oldts)
460 {
461 keep_our_modes = NO;
462 chptr->channelts = newts;
463 }
464 else
465 keep_new_modes = NO;
466
212380e3 467 /* Lost the TS, other side wins, so remove modes on this side */
468 if(!keep_our_modes)
469 {
bee3b671 470 set_final_mode(&mode, &chptr->mode);
471 chptr->mode = mode;
212380e3 472 remove_our_modes(chptr, source_p);
473 DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head)
474 {
475 del_invite(chptr, ptr->data);
476 }
bee3b671 477 /* If setting -j, clear join throttle state -- jilles */
478 chptr->join_count = chptr->join_delta = 0;
212380e3 479 sendto_channel_local(ALL_MEMBERS, chptr,
480 ":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to %ld",
481 me.name, chptr->chname, chptr->chname,
482 (long) oldts, (long) newts);
bee3b671 483 if(*modebuf != '\0')
484 sendto_channel_local(ALL_MEMBERS, chptr,
485 ":%s MODE %s %s %s",
486 source_p->servptr->name,
487 chptr->chname, modebuf, parabuf);
488 *modebuf = *parabuf = '\0';
212380e3 489 }
490
212380e3 491 if(!IsMember(source_p, chptr))
492 {
493 add_user_to_channel(chptr, source_p, CHFL_PEON);
494 if (chptr->mode.join_num &&
495 CurrentTime - chptr->join_delta >= chptr->mode.join_time)
496 {
497 chptr->join_count = 0;
498 chptr->join_delta = CurrentTime;
499 }
500 chptr->join_count++;
501 sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s JOIN :%s",
502 source_p->name, source_p->username,
503 source_p->host, chptr->chname);
504 }
505
212380e3 506 sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
bee3b671 507 ":%s JOIN %ld %s +",
508 source_p->id, (long) chptr->channelts, chptr->chname);
212380e3 509 sendto_server(client_p, chptr, NOCAPS, CAP_TS6,
510 ":%s SJOIN %ld %s %s :%s",
511 source_p->user->server, (long) chptr->channelts,
bee3b671 512 chptr->chname, keep_new_modes ? "+" : "0",
513 source_p->name);
212380e3 514 return 0;
515}
516
517/*
518 * do_join_0
519 *
520 * inputs - pointer to client doing join 0
521 * output - NONE
522 * side effects - Use has decided to join 0. This is legacy
523 * from the days when channels were numbers not names. *sigh*
524 * There is a bunch of evilness necessary here due to
525 * anti spambot code.
526 */
527static void
528do_join_0(struct Client *client_p, struct Client *source_p)
529{
530 struct membership *msptr;
531 struct Channel *chptr = NULL;
532 dlink_node *ptr;
533
534 /* Finish the flood grace period... */
535 if(MyClient(source_p) && !IsFloodDone(source_p))
536 flood_endgrace(source_p);
537
538
539 sendto_server(client_p, NULL, NOCAPS, NOCAPS, ":%s JOIN 0", source_p->name);
540
541 if(source_p->user->channel.head && MyConnect(source_p) &&
542 !IsOper(source_p) && !IsExemptSpambot(source_p))
543 check_spambot_warning(source_p, NULL);
544
545 while((ptr = source_p->user->channel.head))
546 {
547 msptr = ptr->data;
548 chptr = msptr->chptr;
549 sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s",
550 source_p->name,
551 source_p->username, source_p->host, chptr->chname);
552 remove_user_from_channel(msptr);
553 }
554}
555
556static int
557check_channel_name_loc(struct Client *source_p, const char *name)
558{
559 s_assert(name != NULL);
560 if(EmptyString(name))
561 return 0;
562
563 if(ConfigFileEntry.disable_fake_channels && !IsOper(source_p))
564 {
565 for(; *name; ++name)
566 {
567 if(!IsChanChar(*name) || IsFakeChanChar(*name))
568 return 0;
569 }
570 }
571 else
572 {
573 for(; *name; ++name)
574 {
575 if(!IsChanChar(*name))
576 return 0;
577 }
578 }
579
580 return 1;
581}
582
583struct mode_letter
584{
585 int mode;
586 char letter;
587};
588
589static struct mode_letter flags[] = {
590 {MODE_NOPRIVMSGS, 'n'},
591 {MODE_TOPICLIMIT, 't'},
592 {MODE_SECRET, 's'},
593 {MODE_MODERATED, 'm'},
594 {MODE_INVITEONLY, 'i'},
595 {MODE_PRIVATE, 'p'},
596 {MODE_REGONLY, 'r'},
597 {MODE_EXLIMIT, 'L'},
598 {MODE_PERMANENT, 'P'},
599 {MODE_NOCOLOR, 'c'},
600 {MODE_FREEINVITE, 'g'},
601 {MODE_OPMODERATE, 'z'},
602 {MODE_FREETARGET, 'F'},
603 {MODE_DISFORWARD, 'Q'},
604 {0, 0}
605};
606
607static void
608set_final_mode(struct Mode *mode, struct Mode *oldmode)
609{
610 int dir = MODE_QUERY;
611 char *pbuf = parabuf;
612 int len;
613 int i;
614
615 /* ok, first get a list of modes we need to add */
616 for(i = 0; flags[i].letter; i++)
617 {
618 if((mode->mode & flags[i].mode) && !(oldmode->mode & flags[i].mode))
619 {
620 if(dir != MODE_ADD)
621 {
622 *mbuf++ = '+';
623 dir = MODE_ADD;
624 }
625 *mbuf++ = flags[i].letter;
626 }
627 }
628
629 /* now the ones we need to remove. */
630 for(i = 0; flags[i].letter; i++)
631 {
632 if((oldmode->mode & flags[i].mode) && !(mode->mode & flags[i].mode))
633 {
634 if(dir != MODE_DEL)
635 {
636 *mbuf++ = '-';
637 dir = MODE_DEL;
638 }
639 *mbuf++ = flags[i].letter;
640 }
641 }
642
643 if(oldmode->limit && !mode->limit)
644 {
645 if(dir != MODE_DEL)
646 {
647 *mbuf++ = '-';
648 dir = MODE_DEL;
649 }
650 *mbuf++ = 'l';
651 }
652 if(oldmode->key[0] && !mode->key[0])
653 {
654 if(dir != MODE_DEL)
655 {
656 *mbuf++ = '-';
657 dir = MODE_DEL;
658 }
659 *mbuf++ = 'k';
660 len = ircsprintf(pbuf, "%s ", oldmode->key);
661 pbuf += len;
662 }
663 if(oldmode->join_num && !mode->join_num)
664 {
665 if(dir != MODE_DEL)
666 {
667 *mbuf++ = '-';
668 dir = MODE_DEL;
669 }
670 *mbuf++ = 'j';
671 }
672 if(oldmode->forward[0] && !mode->forward[0])
673 {
674 if(dir != MODE_DEL)
675 {
676 *mbuf++ = '-';
677 dir = MODE_DEL;
678 }
679 *mbuf++ = 'f';
680 }
681 if(mode->limit && oldmode->limit != mode->limit)
682 {
683 if(dir != MODE_ADD)
684 {
685 *mbuf++ = '+';
686 dir = MODE_ADD;
687 }
688 *mbuf++ = 'l';
689 len = ircsprintf(pbuf, "%d ", mode->limit);
690 pbuf += len;
691 }
692 if(mode->key[0] && strcmp(oldmode->key, mode->key))
693 {
694 if(dir != MODE_ADD)
695 {
696 *mbuf++ = '+';
697 dir = MODE_ADD;
698 }
699 *mbuf++ = 'k';
700 len = ircsprintf(pbuf, "%s ", mode->key);
701 pbuf += len;
702 }
703 if(mode->join_num && (oldmode->join_num != mode->join_num || oldmode->join_time != mode->join_time))
704 {
705 if(dir != MODE_ADD)
706 {
707 *mbuf++ = '+';
708 dir = MODE_ADD;
709 }
710 *mbuf++ = 'j';
711 len = ircsprintf(pbuf, "%d:%d ", mode->join_num, mode->join_time);
712 pbuf += len;
713 }
714 if(mode->forward[0] && strcmp(oldmode->forward, mode->forward) && ConfigChannel.use_forward)
715 {
716 if(dir != MODE_ADD)
717 {
718 *mbuf++ = '+';
719 dir = MODE_ADD;
720 }
721 *mbuf++ = 'f';
722 len = ircsprintf(pbuf, "%s ", mode->forward);
723 pbuf += len;
724 }
725 *mbuf = '\0';
726}
727
728/*
729 * remove_our_modes
730 *
731 * inputs -
732 * output -
733 * side effects -
734 */
735static void
736remove_our_modes(struct Channel *chptr, struct Client *source_p)
737{
738 struct membership *msptr;
739 dlink_node *ptr;
740 char lmodebuf[MODEBUFLEN];
741 char *lpara[MAXMODEPARAMS];
742 int count = 0;
743 int i;
744
745 mbuf = lmodebuf;
746 *mbuf++ = '-';
747
748 for(i = 0; i < MAXMODEPARAMS; i++)
749 lpara[i] = NULL;
750
751 DLINK_FOREACH(ptr, chptr->members.head)
752 {
753 msptr = ptr->data;
754
755 if(is_chanop(msptr))
756 {
757 msptr->flags &= ~CHFL_CHANOP;
758 lpara[count++] = msptr->client_p->name;
759 *mbuf++ = 'o';
760
761 /* +ov, might not fit so check. */
762 if(is_voiced(msptr))
763 {
764 if(count >= MAXMODEPARAMS)
765 {
766 *mbuf = '\0';
767 sendto_channel_local(ALL_MEMBERS, chptr,
768 ":%s MODE %s %s %s %s %s %s",
769 me.name, chptr->chname,
770 lmodebuf, lpara[0], lpara[1],
771 lpara[2], lpara[3]);
772
773 /* preserve the initial '-' */
774 mbuf = lmodebuf;
775 *mbuf++ = '-';
776 count = 0;
777
778 for(i = 0; i < MAXMODEPARAMS; i++)
779 lpara[i] = NULL;
780 }
781
782 msptr->flags &= ~CHFL_VOICE;
783 lpara[count++] = msptr->client_p->name;
784 *mbuf++ = 'v';
785 }
786 }
787 else if(is_voiced(msptr))
788 {
789 msptr->flags &= ~CHFL_VOICE;
790 lpara[count++] = msptr->client_p->name;
791 *mbuf++ = 'v';
792 }
793 else
794 continue;
795
796 if(count >= MAXMODEPARAMS)
797 {
798 *mbuf = '\0';
799 sendto_channel_local(ALL_MEMBERS, chptr,
800 ":%s MODE %s %s %s %s %s %s",
801 me.name, chptr->chname, lmodebuf,
802 lpara[0], lpara[1], lpara[2], lpara[3]);
803 mbuf = lmodebuf;
804 *mbuf++ = '-';
805 count = 0;
806
807 for(i = 0; i < MAXMODEPARAMS; i++)
808 lpara[i] = NULL;
809 }
810 }
811
812 if(count != 0)
813 {
814 *mbuf = '\0';
815 sendto_channel_local(ALL_MEMBERS, chptr,
816 ":%s MODE %s %s %s %s %s %s",
817 me.name, chptr->chname, lmodebuf,
818 EmptyString(lpara[0]) ? "" : lpara[0],
819 EmptyString(lpara[1]) ? "" : lpara[1],
820 EmptyString(lpara[2]) ? "" : lpara[2],
821 EmptyString(lpara[3]) ? "" : lpara[3]);
822
823 }
824}
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