1 |
/* |
2 |
* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
3 |
* m_sjoin.c: Joins a user to a channel. |
4 |
* |
5 |
* Copyright (C) 2002 by the past and present ircd coders, and others. |
6 |
* |
7 |
* This program is free software; you can redistribute it and/or modify |
8 |
* it under the terms of the GNU General Public License as published by |
9 |
* the Free Software Foundation; either version 2 of the License, or |
10 |
* (at your option) any later version. |
11 |
* |
12 |
* This program is distributed in the hope that it will be useful, |
13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 |
* GNU General Public License for more details. |
16 |
* |
17 |
* You should have received a copy of the GNU General Public License |
18 |
* along with this program; if not, write to the Free Software |
19 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
20 |
* USA |
21 |
* |
22 |
* $Id$ |
23 |
*/ |
24 |
|
25 |
#include "stdinc.h" |
26 |
#include "tools.h" |
27 |
#include "handlers.h" |
28 |
#include "channel.h" |
29 |
#include "channel_mode.h" |
30 |
#include "client.h" |
31 |
#include "hash.h" |
32 |
#include "irc_string.h" |
33 |
#include "sprintf_irc.h" |
34 |
#include "ircd.h" |
35 |
#include "list.h" |
36 |
#include "numeric.h" |
37 |
#include "send.h" |
38 |
#include "common.h" |
39 |
#include "msg.h" |
40 |
#include "parse.h" |
41 |
#include "modules.h" |
42 |
#include "s_serv.h" |
43 |
#include "s_conf.h" |
44 |
|
45 |
static void ms_sjoin(struct Client *, struct Client *, int, char *[]); |
46 |
|
47 |
struct Message sjoin_msgtab = { |
48 |
"SJOIN", 0, 0, 0, 0, MFLG_SLOW, 0, |
49 |
{m_unregistered, m_ignore, ms_sjoin, m_ignore, m_ignore, m_ignore} |
50 |
}; |
51 |
|
52 |
#ifndef STATIC_MODULES |
53 |
void |
54 |
_modinit(void) |
55 |
{ |
56 |
mod_add_cmd(&sjoin_msgtab); |
57 |
} |
58 |
|
59 |
void |
60 |
_moddeinit(void) |
61 |
{ |
62 |
mod_del_cmd(&sjoin_msgtab); |
63 |
} |
64 |
|
65 |
const char *_version = "$Revision$"; |
66 |
#endif |
67 |
|
68 |
static char modebuf[MODEBUFLEN]; |
69 |
static char parabuf[MODEBUFLEN]; |
70 |
static char sendbuf[MODEBUFLEN]; |
71 |
static const char *para[MAXMODEPARAMS]; |
72 |
static char *mbuf; |
73 |
static int pargs; |
74 |
|
75 |
static void set_final_mode(struct Mode *, struct Mode *); |
76 |
static void remove_our_modes(struct Channel *, struct Client *); |
77 |
static void remove_a_mode(struct Channel *, struct Client *, int, char); |
78 |
static void remove_ban_list(struct Channel *, struct Client *, dlink_list *, char, int); |
79 |
static void introduce_lazy_link_clients(struct Client *,struct Client *, |
80 |
struct Channel *); |
81 |
|
82 |
/* ms_sjoin() |
83 |
* |
84 |
* parv[0] - sender |
85 |
* parv[1] - TS |
86 |
* parv[2] - channel |
87 |
* parv[3] - modes + n arguments (key and/or limit) |
88 |
* parv[4+n] - flags+nick list (all in one parameter) |
89 |
* |
90 |
* process a SJOIN, taking the TS's into account to either ignore the |
91 |
* incoming modes or undo the existing ones or merge them, and JOIN |
92 |
* all the specified users while sending JOIN/MODEs to local clients |
93 |
*/ |
94 |
static void |
95 |
ms_sjoin(struct Client *client_p, struct Client *source_p, |
96 |
int parc, char *parv[]) |
97 |
{ |
98 |
struct Channel *chptr; |
99 |
struct Client *target_p; |
100 |
time_t newts; |
101 |
time_t oldts; |
102 |
time_t tstosend; |
103 |
static struct Mode mode, *oldmode; |
104 |
int args = 0; |
105 |
char keep_our_modes = YES; |
106 |
char keep_new_modes = YES; |
107 |
char have_many_nicks = NO; |
108 |
int lcount; |
109 |
char nick_prefix[4]; |
110 |
char uid_prefix[4]; |
111 |
char *np, *up; |
112 |
int len_nick = 0; |
113 |
int len_uid = 0; |
114 |
int isnew; |
115 |
int buflen = 0; |
116 |
int slen; |
117 |
unsigned int fl; |
118 |
char *s; |
119 |
char *sptr; |
120 |
char nick_buf[IRCD_BUFSIZE]; /* buffer for modes and prefix */ |
121 |
char uid_buf[IRCD_BUFSIZE]; /* buffer for modes/prefixes for CAP_TS6 servers */ |
122 |
char *nick_ptr, *uid_ptr; /* pointers used for making the two mode/prefix buffers */ |
123 |
char *p; /* pointer used making sjbuf */ |
124 |
dlink_node *m; |
125 |
const char *servername = (ConfigServerHide.hide_servers || IsHidden(source_p)) ? |
126 |
me.name : source_p->name; |
127 |
|
128 |
if (IsClient(source_p) || parc < 5) |
129 |
return; |
130 |
|
131 |
/* SJOIN's for local channels can't happen. */ |
132 |
if (*parv[2] != '#') |
133 |
return; |
134 |
|
135 |
if (!check_channel_name(parv[2])) |
136 |
return; |
137 |
|
138 |
modebuf[0] = '\0'; |
139 |
mbuf = modebuf; |
140 |
pargs = 0; |
141 |
newts = atol(parv[1]); |
142 |
|
143 |
mode.mode = 0; |
144 |
mode.limit = 0; |
145 |
mode.key[0] = '\0'; |
146 |
s = parv[3]; |
147 |
|
148 |
while (*s) |
149 |
{ |
150 |
switch (*(s++)) |
151 |
{ |
152 |
case 't': |
153 |
mode.mode |= MODE_TOPICLIMIT; |
154 |
break; |
155 |
case 'n': |
156 |
mode.mode |= MODE_NOPRIVMSGS; |
157 |
break; |
158 |
case 's': |
159 |
mode.mode |= MODE_SECRET; |
160 |
break; |
161 |
case 'm': |
162 |
mode.mode |= MODE_MODERATED; |
163 |
break; |
164 |
case 'i': |
165 |
mode.mode |= MODE_INVITEONLY; |
166 |
break; |
167 |
case 'p': |
168 |
mode.mode |= MODE_PRIVATE; |
169 |
break; |
170 |
case 'k': |
171 |
strlcpy(mode.key, parv[4 + args], sizeof(mode.key)); |
172 |
args++; |
173 |
if (parc < 5+args) |
174 |
return; |
175 |
break; |
176 |
case 'l': |
177 |
mode.limit = atoi(parv[4 + args]); |
178 |
args++; |
179 |
if (parc < 5+args) |
180 |
return; |
181 |
break; |
182 |
} |
183 |
} |
184 |
|
185 |
parabuf[0] = '\0'; |
186 |
|
187 |
if ((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL) |
188 |
return; /* channel name too long? */ |
189 |
|
190 |
oldts = chptr->channelts; |
191 |
oldmode = &chptr->mode; |
192 |
|
193 |
if (ConfigFileEntry.ignore_bogus_ts) |
194 |
{ |
195 |
if (newts < 800000000) |
196 |
{ |
197 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
198 |
"*** Bogus TS %lu on %s ignored from %s", |
199 |
(unsigned long)newts, chptr->chname, |
200 |
client_p->name); |
201 |
|
202 |
newts = (oldts == 0) ? 0 : 800000000; |
203 |
} |
204 |
} |
205 |
else |
206 |
{ |
207 |
if (!newts && !isnew && oldts) |
208 |
{ |
209 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, |
210 |
":%s NOTICE %s :*** Notice -- TS for %s changed from %lu to 0", |
211 |
me.name, chptr->chname, chptr->chname, (unsigned long)oldts); |
212 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
213 |
"Server %s changing TS on %s from %lu to 0", |
214 |
source_p->name, chptr->chname, (unsigned long)oldts); |
215 |
} |
216 |
} |
217 |
|
218 |
if (isnew) |
219 |
chptr->channelts = tstosend = newts; |
220 |
else if (newts == 0 || oldts == 0) |
221 |
chptr->channelts = tstosend = 0; |
222 |
else if (newts == oldts) |
223 |
tstosend = oldts; |
224 |
else if (newts < oldts) |
225 |
{ |
226 |
keep_our_modes = NO; |
227 |
chptr->channelts = tstosend = newts; |
228 |
} |
229 |
else |
230 |
{ |
231 |
keep_new_modes = NO; |
232 |
tstosend = oldts; |
233 |
} |
234 |
|
235 |
if (!keep_new_modes) |
236 |
mode = *oldmode; |
237 |
else if (keep_our_modes) |
238 |
{ |
239 |
mode.mode |= oldmode->mode; |
240 |
if (oldmode->limit > mode.limit) |
241 |
mode.limit = oldmode->limit; |
242 |
if (strcmp(mode.key, oldmode->key) < 0) |
243 |
strcpy(mode.key, oldmode->key); |
244 |
} |
245 |
set_final_mode(&mode, oldmode); |
246 |
chptr->mode = mode; |
247 |
|
248 |
/* Lost the TS, other side wins, so remove modes on this side */ |
249 |
if (!keep_our_modes) |
250 |
{ |
251 |
remove_our_modes(chptr, source_p); |
252 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, |
253 |
":%s NOTICE %s :*** Notice -- TS for %s changed from %lu to %lu", |
254 |
me.name, chptr->chname, chptr->chname, |
255 |
(unsigned long)oldts, (unsigned long)newts); |
256 |
} |
257 |
|
258 |
if (*modebuf != '\0') |
259 |
{ |
260 |
/* This _SHOULD_ be to ALL_MEMBERS |
261 |
* It contains only +imnpstlk, etc */ |
262 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s %s", |
263 |
servername, chptr->chname, modebuf, parabuf); |
264 |
} |
265 |
|
266 |
if (parv[3][0] != '0' && keep_new_modes) |
267 |
{ |
268 |
channel_modes(chptr, source_p, modebuf, parabuf); |
269 |
} |
270 |
else |
271 |
{ |
272 |
modebuf[0] = '0'; |
273 |
modebuf[1] = '\0'; |
274 |
} |
275 |
|
276 |
buflen = ircsprintf(nick_buf, ":%s SJOIN %lu %s %s %s:", |
277 |
source_p->name, (unsigned long)tstosend, |
278 |
chptr->chname, modebuf, parabuf); |
279 |
nick_ptr = nick_buf + buflen; |
280 |
|
281 |
buflen = ircsprintf(uid_buf, ":%s SJOIN %lu %s %s %s:", |
282 |
ID(source_p), (unsigned long)tstosend, |
283 |
chptr->chname, modebuf, parabuf); |
284 |
uid_ptr = uid_buf + buflen; |
285 |
|
286 |
/* check we can fit a nick on the end, as well as \r\n and a prefix " |
287 |
* @%+", and a space. |
288 |
*/ |
289 |
if (buflen >= (IRCD_BUFSIZE - IRCD_MAX(NICKLEN, IDLEN) - 2 - 3 - 1)) |
290 |
{ |
291 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
292 |
"Long SJOIN from server: %s(via %s) (ignored)", |
293 |
source_p->name, client_p->name); |
294 |
return; |
295 |
} |
296 |
|
297 |
mbuf = modebuf; |
298 |
sendbuf[0] = '\0'; |
299 |
pargs = 0; |
300 |
|
301 |
*mbuf++ = '+'; |
302 |
|
303 |
s = parv[args + 4]; |
304 |
while (*s == ' ') |
305 |
s++; |
306 |
if ((p = strchr(s, ' ')) != NULL) |
307 |
{ |
308 |
*p++ = '\0'; |
309 |
while (*p == ' ') |
310 |
p++; |
311 |
have_many_nicks = *p; |
312 |
} |
313 |
|
314 |
while (*s) |
315 |
{ |
316 |
int valid_mode = YES; |
317 |
fl = 0; |
318 |
|
319 |
do |
320 |
{ |
321 |
switch (*s) |
322 |
{ |
323 |
case '@': |
324 |
fl |= CHFL_CHANOP; |
325 |
s++; |
326 |
break; |
327 |
#ifdef HALFOPS |
328 |
case '%': |
329 |
fl |= CHFL_HALFOP; |
330 |
s++; |
331 |
break; |
332 |
#endif |
333 |
case '+': |
334 |
fl |= CHFL_VOICE; |
335 |
s++; |
336 |
break; |
337 |
default: |
338 |
valid_mode = NO; |
339 |
break; |
340 |
} |
341 |
} while (valid_mode); |
342 |
|
343 |
target_p = find_chasing(client_p, source_p, s, NULL); |
344 |
|
345 |
/* |
346 |
* if the client doesnt exist, or if its fake direction/server, skip. |
347 |
* we cannot send ERR_NOSUCHNICK here because if its a UID, we cannot |
348 |
* lookup the nick, and its better to never send the numeric than only |
349 |
* sometimes. |
350 |
*/ |
351 |
if (target_p == NULL || |
352 |
target_p->from != client_p || |
353 |
!IsClient(target_p)) |
354 |
{ |
355 |
goto nextnick; |
356 |
} |
357 |
|
358 |
len_nick = strlen(target_p->name); |
359 |
len_uid = strlen(ID(target_p)); |
360 |
|
361 |
np = nick_prefix; |
362 |
up = uid_prefix; |
363 |
|
364 |
if (keep_new_modes) |
365 |
{ |
366 |
if (fl & CHFL_CHANOP) |
367 |
{ |
368 |
*np++ = '@'; |
369 |
*up++ = '@'; |
370 |
len_nick++; |
371 |
len_uid++; |
372 |
} |
373 |
#ifdef HALFOPS |
374 |
if (fl & CHFL_HALFOP) |
375 |
{ |
376 |
*np++ = '%'; |
377 |
*up++ = '%'; |
378 |
len_nick++; |
379 |
len_uid++; |
380 |
} |
381 |
#endif |
382 |
if (fl & CHFL_VOICE) |
383 |
{ |
384 |
*np++ = '+'; |
385 |
*up++ = '+'; |
386 |
len_nick++; |
387 |
len_uid++; |
388 |
} |
389 |
} |
390 |
else |
391 |
{ |
392 |
if (fl & (CHFL_CHANOP|CHFL_HALFOP)) |
393 |
fl = CHFL_DEOPPED; |
394 |
else |
395 |
fl = 0; |
396 |
} |
397 |
*np = *up = '\0'; |
398 |
|
399 |
if ((nick_ptr - nick_buf + len_nick) > (IRCD_BUFSIZE - 2)) |
400 |
{ |
401 |
sendto_server(client_p, NULL, chptr, 0, CAP_TS6, 0, "%s", nick_buf); |
402 |
|
403 |
buflen = ircsprintf(nick_buf, ":%s SJOIN %lu %s %s %s:", |
404 |
source_p->name, (unsigned long)tstosend, |
405 |
chptr->chname, modebuf, parabuf); |
406 |
nick_ptr = nick_buf + buflen; |
407 |
} |
408 |
nick_ptr += ircsprintf(nick_ptr, "%s%s ", nick_prefix, target_p->name); |
409 |
|
410 |
if ((uid_ptr - uid_buf + len_uid) > (IRCD_BUFSIZE - 2)) |
411 |
{ |
412 |
sendto_server(client_p, NULL, chptr, CAP_TS6, 0, 0, "%s", uid_buf); |
413 |
|
414 |
buflen = ircsprintf(uid_buf, ":%s SJOIN %lu %s %s %s:", |
415 |
ID(source_p), (unsigned long)tstosend, |
416 |
chptr->chname, modebuf, parabuf); |
417 |
uid_ptr = uid_buf + buflen; |
418 |
} |
419 |
|
420 |
uid_ptr += ircsprintf(uid_ptr, "%s%s ", uid_prefix, ID(target_p)); |
421 |
|
422 |
/* LazyLinks - Introduce unknown clients before sending the sjoin */ |
423 |
if (ServerInfo.hub) |
424 |
introduce_lazy_link_clients(client_p, target_p, chptr); |
425 |
|
426 |
if (!IsMember(target_p, chptr)) |
427 |
{ |
428 |
add_user_to_channel(chptr, target_p, fl, !have_many_nicks); |
429 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s JOIN :%s", |
430 |
target_p->name, target_p->username, |
431 |
target_p->host, chptr->chname); |
432 |
} |
433 |
|
434 |
if (fl & CHFL_CHANOP) |
435 |
{ |
436 |
*mbuf++ = 'o'; |
437 |
para[pargs++] = target_p->name; |
438 |
|
439 |
if (pargs >= MAXMODEPARAMS) |
440 |
{ |
441 |
/* |
442 |
* Ok, the code is now going to "walk" through |
443 |
* sendbuf, filling in para strings. So, I will use sptr |
444 |
* to point into the sendbuf. |
445 |
* Notice, that ircsprintf() returns the number of chars |
446 |
* successfully inserted into string. |
447 |
* - Dianora |
448 |
*/ |
449 |
|
450 |
sptr = sendbuf; |
451 |
*mbuf = '\0'; |
452 |
for(lcount = 0; lcount < MAXMODEPARAMS; lcount++) |
453 |
{ |
454 |
slen = ircsprintf(sptr, " %s", para[lcount]); /* see? */ |
455 |
sptr += slen; /* ready for next */ |
456 |
} |
457 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s%s", |
458 |
servername, chptr->chname, modebuf, sendbuf); |
459 |
mbuf = modebuf; |
460 |
*mbuf++ = '+'; |
461 |
|
462 |
sendbuf[0] = '\0'; |
463 |
pargs = 0; |
464 |
} |
465 |
} |
466 |
#ifdef HALFOPS |
467 |
if (fl & CHFL_HALFOP) |
468 |
{ |
469 |
*mbuf++ = 'h'; |
470 |
para[pargs++] = target_p->name; |
471 |
|
472 |
if (pargs >= MAXMODEPARAMS) |
473 |
{ |
474 |
sptr = sendbuf; |
475 |
*mbuf = '\0'; |
476 |
for(lcount = 0; lcount < MAXMODEPARAMS; lcount++) |
477 |
{ |
478 |
slen = ircsprintf(sptr, " %s", para[lcount]); |
479 |
sptr += slen; |
480 |
} |
481 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s%s", |
482 |
servername, chptr->chname, modebuf, sendbuf); |
483 |
|
484 |
mbuf = modebuf; |
485 |
*mbuf++ = '+'; |
486 |
|
487 |
sendbuf[0] = '\0'; |
488 |
pargs = 0; |
489 |
} |
490 |
} |
491 |
#endif |
492 |
if (fl & CHFL_VOICE) |
493 |
{ |
494 |
*mbuf++ = 'v'; |
495 |
para[pargs++] = target_p->name; |
496 |
|
497 |
if (pargs >= MAXMODEPARAMS) |
498 |
{ |
499 |
sptr = sendbuf; |
500 |
*mbuf = '\0'; |
501 |
for (lcount = 0; lcount < MAXMODEPARAMS; lcount++) |
502 |
{ |
503 |
slen = ircsprintf(sptr, " %s", para[lcount]); |
504 |
sptr += slen; |
505 |
} |
506 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s%s", |
507 |
servername, chptr->chname, modebuf, sendbuf); |
508 |
|
509 |
mbuf = modebuf; |
510 |
*mbuf++ = '+'; |
511 |
|
512 |
sendbuf[0] = '\0'; |
513 |
pargs = 0; |
514 |
} |
515 |
} |
516 |
|
517 |
nextnick: |
518 |
if ((s = p) == NULL) |
519 |
break; |
520 |
while (*s == ' ') |
521 |
s++; |
522 |
if ((p = strchr(s, ' ')) != NULL) |
523 |
{ |
524 |
*p++ = 0; |
525 |
while (*p == ' ') |
526 |
p++; |
527 |
} |
528 |
} |
529 |
|
530 |
*mbuf = '\0'; |
531 |
*(nick_ptr - 1) = '\0'; |
532 |
*(uid_ptr - 1) = '\0'; |
533 |
|
534 |
/* |
535 |
* checking for lcount < MAXMODEPARAMS at this time is wrong |
536 |
* since the code has already verified above that pargs < MAXMODEPARAMS |
537 |
* checking for para[lcount] != '\0' is also wrong, since |
538 |
* there is no place where para[lcount] is set! |
539 |
* - Dianora |
540 |
*/ |
541 |
|
542 |
if (pargs != 0) |
543 |
{ |
544 |
sptr = sendbuf; |
545 |
|
546 |
for (lcount = 0; lcount < pargs; lcount++) |
547 |
{ |
548 |
slen = ircsprintf(sptr, " %s", para[lcount]); |
549 |
sptr += slen; |
550 |
} |
551 |
|
552 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s%s", |
553 |
servername, chptr->chname, modebuf, sendbuf); |
554 |
} |
555 |
|
556 |
/* If this happens, its the result of a malformed SJOIN |
557 |
* a remnant from the old persistent channel code. *sigh* |
558 |
* Or it could be the result of a client just leaving |
559 |
* and leaving us with a channel formed just as the client parts. |
560 |
* - Dianora |
561 |
*/ |
562 |
|
563 |
if ((dlink_list_length(&chptr->members) == 0) && isnew) |
564 |
{ |
565 |
destroy_channel(chptr); |
566 |
return; |
567 |
} |
568 |
|
569 |
if (parv[4 + args][0] == '\0') |
570 |
return; |
571 |
|
572 |
/* relay the SJOIN to other servers */ |
573 |
DLINK_FOREACH(m, serv_list.head) |
574 |
{ |
575 |
target_p = m->data; |
576 |
|
577 |
if (target_p == client_p) |
578 |
continue; |
579 |
|
580 |
if (IsCapable(target_p, CAP_TS6)) |
581 |
sendto_one(target_p, "%s", uid_buf); |
582 |
else |
583 |
sendto_one(target_p, "%s", nick_buf); |
584 |
} |
585 |
|
586 |
if (HasID(source_p) && !keep_our_modes) |
587 |
{ |
588 |
if (dlink_list_length(&chptr->banlist) > 0) |
589 |
remove_ban_list(chptr, client_p, &chptr->banlist, |
590 |
'b', NOCAPS); |
591 |
|
592 |
if (dlink_list_length(&chptr->exceptlist) > 0) |
593 |
remove_ban_list(chptr, client_p, &chptr->exceptlist, |
594 |
'e', CAP_EX); |
595 |
|
596 |
if (dlink_list_length(&chptr->invexlist) > 0) |
597 |
remove_ban_list(chptr, client_p, &chptr->invexlist, |
598 |
'I', CAP_IE); |
599 |
clear_ban_cache(chptr); |
600 |
} |
601 |
} |
602 |
|
603 |
/* set_final_mode |
604 |
* |
605 |
* inputs - channel mode |
606 |
* - old channel mode |
607 |
* output - NONE |
608 |
* side effects - walk through all the channel modes turning off modes |
609 |
* that were on in oldmode but aren't on in mode. |
610 |
* Then walk through turning on modes that are on in mode |
611 |
* but were not set in oldmode. |
612 |
*/ |
613 |
|
614 |
static const struct mode_letter |
615 |
{ |
616 |
unsigned int mode; |
617 |
unsigned char letter; |
618 |
} flags[] = { |
619 |
{ MODE_NOPRIVMSGS, 'n' }, |
620 |
{ MODE_TOPICLIMIT, 't' }, |
621 |
{ MODE_SECRET, 's' }, |
622 |
{ MODE_MODERATED, 'm' }, |
623 |
{ MODE_INVITEONLY, 'i' }, |
624 |
{ MODE_PRIVATE, 'p' }, |
625 |
{ 0, '\0' } |
626 |
}; |
627 |
|
628 |
static void |
629 |
set_final_mode(struct Mode *mode, struct Mode *oldmode) |
630 |
{ |
631 |
char *pbuf = parabuf; |
632 |
int len; |
633 |
int i; |
634 |
|
635 |
*mbuf++ = '-'; |
636 |
|
637 |
for (i = 0; flags[i].letter; i++) |
638 |
{ |
639 |
if ((flags[i].mode & oldmode->mode) && |
640 |
!(flags[i].mode & mode->mode)) |
641 |
*mbuf++ = flags[i].letter; |
642 |
} |
643 |
|
644 |
if (oldmode->limit != 0 && mode->limit == 0) |
645 |
*mbuf++ = 'l'; |
646 |
|
647 |
if (oldmode->key[0] && !mode->key[0]) |
648 |
{ |
649 |
*mbuf++ = 'k'; |
650 |
len = ircsprintf(pbuf, "%s ", oldmode->key); |
651 |
pbuf += len; |
652 |
pargs++; |
653 |
} |
654 |
|
655 |
if (*(mbuf-1) == '-') |
656 |
*(mbuf-1) = '+'; |
657 |
else |
658 |
*mbuf++ = '+'; |
659 |
|
660 |
for (i = 0; flags[i].letter; i++) |
661 |
{ |
662 |
if ((flags[i].mode & mode->mode) && |
663 |
!(flags[i].mode & oldmode->mode)) |
664 |
*mbuf++ = flags[i].letter; |
665 |
} |
666 |
|
667 |
if (mode->limit != 0 && oldmode->limit != mode->limit) |
668 |
{ |
669 |
*mbuf++ = 'l'; |
670 |
len = ircsprintf(pbuf, "%d ", mode->limit); |
671 |
pbuf += len; |
672 |
pargs++; |
673 |
} |
674 |
|
675 |
if (mode->key[0] && strcmp(oldmode->key, mode->key)) |
676 |
{ |
677 |
*mbuf++ = 'k'; |
678 |
len = ircsprintf(pbuf, "%s ", mode->key); |
679 |
pbuf += len; |
680 |
pargs++; |
681 |
} |
682 |
if (*(mbuf-1) == '+') |
683 |
*(mbuf-1) = '\0'; |
684 |
else |
685 |
*mbuf = '\0'; |
686 |
} |
687 |
|
688 |
/* remove_our_modes() |
689 |
* |
690 |
* inputs - pointer to channel to remove modes from |
691 |
* - client pointer |
692 |
* output - NONE |
693 |
* side effects - Go through the local members, remove all their |
694 |
* chanop modes etc., this side lost the TS. |
695 |
*/ |
696 |
static void |
697 |
remove_our_modes(struct Channel *chptr, struct Client *source_p) |
698 |
{ |
699 |
remove_a_mode(chptr, source_p, CHFL_CHANOP, 'o'); |
700 |
#ifdef HALFOPS |
701 |
remove_a_mode(chptr, source_p, CHFL_HALFOP, 'h'); |
702 |
#endif |
703 |
remove_a_mode(chptr, source_p, CHFL_VOICE, 'v'); |
704 |
} |
705 |
|
706 |
/* remove_a_mode() |
707 |
* |
708 |
* inputs - pointer to channel |
709 |
* - server or client removing the mode |
710 |
* - mask o/h/v mask to be removed |
711 |
* - flag o/h/v to be removed |
712 |
* output - NONE |
713 |
* side effects - remove ONE mode from all members of a channel |
714 |
*/ |
715 |
static void |
716 |
remove_a_mode(struct Channel *chptr, struct Client *source_p, |
717 |
int mask, char flag) |
718 |
{ |
719 |
dlink_node *ptr; |
720 |
struct Membership *ms; |
721 |
char lmodebuf[MODEBUFLEN]; |
722 |
char *sp=sendbuf; |
723 |
const char *lpara[MAXMODEPARAMS]; |
724 |
int count = 0; |
725 |
int i; |
726 |
int l; |
727 |
|
728 |
mbuf = lmodebuf; |
729 |
*mbuf++ = '-'; |
730 |
*sp = '\0'; |
731 |
|
732 |
DLINK_FOREACH(ptr, chptr->members.head) |
733 |
{ |
734 |
ms = ptr->data; |
735 |
|
736 |
if ((ms->flags & mask) == 0) |
737 |
continue; |
738 |
|
739 |
ms->flags &= ~mask; |
740 |
|
741 |
lpara[count++] = ms->client_p->name; |
742 |
|
743 |
*mbuf++ = flag; |
744 |
|
745 |
if (count >= MAXMODEPARAMS) |
746 |
{ |
747 |
for(i = 0; i < MAXMODEPARAMS; i++) |
748 |
{ |
749 |
l = ircsprintf(sp, " %s", lpara[i]); |
750 |
sp += l; |
751 |
} |
752 |
|
753 |
*mbuf = '\0'; |
754 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, |
755 |
":%s MODE %s %s%s", |
756 |
(IsHidden(source_p) || |
757 |
ConfigServerHide.hide_servers) ? |
758 |
me.name : source_p->name, |
759 |
chptr->chname, lmodebuf, sendbuf); |
760 |
mbuf = lmodebuf; |
761 |
*mbuf++ = '-'; |
762 |
count = 0; |
763 |
sp = sendbuf; |
764 |
*sp = '\0'; |
765 |
} |
766 |
} |
767 |
|
768 |
if (count != 0) |
769 |
{ |
770 |
*mbuf = '\0'; |
771 |
for(i = 0; i < count; i++) |
772 |
{ |
773 |
l = ircsprintf(sp, " %s", lpara[i]); |
774 |
sp += l; |
775 |
} |
776 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, |
777 |
":%s MODE %s %s%s", |
778 |
(IsHidden(source_p) || ConfigServerHide.hide_servers) ? |
779 |
me.name : source_p->name, |
780 |
chptr->chname, lmodebuf, sendbuf); |
781 |
} |
782 |
} |
783 |
|
784 |
/* remove_ban_list() |
785 |
* |
786 |
* inputs - channel, source, list to remove, char of mode, caps required |
787 |
* outputs - none |
788 |
* side effects - given ban list is removed, modes are sent to local clients and |
789 |
* non-ts6 servers linked through another uplink other than source_p |
790 |
*/ |
791 |
static void |
792 |
remove_ban_list(struct Channel *chptr, struct Client *source_p, |
793 |
dlink_list *list, char c, int cap) |
794 |
{ |
795 |
char lmodebuf[MODEBUFLEN]; |
796 |
char lparabuf[IRCD_BUFSIZE]; |
797 |
struct Ban *banptr = NULL; |
798 |
dlink_node *ptr = NULL; |
799 |
dlink_node *next_ptr = NULL; |
800 |
char *pbuf = NULL; |
801 |
int count = 0; |
802 |
int cur_len, mlen, plen; |
803 |
|
804 |
pbuf = lparabuf; |
805 |
|
806 |
cur_len = mlen = ircsprintf(lmodebuf, ":%s MODE %s -", |
807 |
source_p->name, chptr->chname); |
808 |
mbuf = lmodebuf + mlen; |
809 |
|
810 |
DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
811 |
{ |
812 |
banptr = ptr->data; |
813 |
|
814 |
plen = banptr->len + 4; /* another +b and "!@ " */ |
815 |
if (count >= MAXMODEPARAMS || |
816 |
(cur_len + 1 /* space between */ + (plen - 1)) > IRCD_BUFSIZE - 2) |
817 |
{ |
818 |
/* NUL-terminate and remove trailing space */ |
819 |
*mbuf = *(pbuf - 1) = '\0'; |
820 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, "%s %s", |
821 |
lmodebuf, lparabuf); |
822 |
sendto_server(source_p, NULL, chptr, cap, CAP_TS6, NOFLAGS, |
823 |
"%s %s", lmodebuf, lparabuf); |
824 |
|
825 |
cur_len = mlen; |
826 |
mbuf = lmodebuf + mlen; |
827 |
pbuf = lparabuf; |
828 |
count = 0; |
829 |
} |
830 |
|
831 |
*mbuf++ = c; |
832 |
cur_len += plen; |
833 |
pbuf += ircsprintf(pbuf, "%s!%s@%s ", banptr->name, banptr->username, |
834 |
banptr->host); |
835 |
++count; |
836 |
|
837 |
remove_ban(banptr, list); |
838 |
} |
839 |
|
840 |
*mbuf = *(pbuf - 1) = '\0'; |
841 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, "%s %s", lmodebuf, lparabuf); |
842 |
sendto_server(source_p, NULL, chptr, cap, CAP_TS6, NOFLAGS, |
843 |
"%s %s", lmodebuf, lparabuf); |
844 |
} |
845 |
|
846 |
/* |
847 |
* introduce_lazy_link_clients |
848 |
* |
849 |
* inputs - pointer to client |
850 |
* - pointer to server having clients introduce -to- |
851 |
* - pointer to channel being introduced |
852 |
* output - NONE |
853 |
* side effects - |
854 |
*/ |
855 |
static void |
856 |
introduce_lazy_link_clients(struct Client *client_p, |
857 |
struct Client *target_p, struct Channel *chptr) |
858 |
{ |
859 |
struct Client *lclient_p; |
860 |
dlink_node *m; |
861 |
|
862 |
DLINK_FOREACH(m, serv_list.head) |
863 |
{ |
864 |
lclient_p = m->data; |
865 |
|
866 |
/* Hopefully, the server knows about it's own clients. */ |
867 |
if (client_p == lclient_p) |
868 |
continue; |
869 |
|
870 |
/* Ignore non lazylinks */ |
871 |
if (!IsCapable(lclient_p,CAP_LL)) |
872 |
continue; |
873 |
|
874 |
/* Ignore servers we won't tell anyway */ |
875 |
if (!chptr->lazyLinkChannelExists & |
876 |
(lclient_p->localClient->serverMask)) |
877 |
continue; |
878 |
|
879 |
/* Ignore servers that already know target_p */ |
880 |
if (!(target_p->lazyLinkClientExists & |
881 |
lclient_p->localClient->serverMask)) |
882 |
{ |
883 |
/* Tell LazyLink Leaf about client_p, |
884 |
* as the leaf is about to get a SJOIN */ |
885 |
sendnick_TS(lclient_p, target_p); |
886 |
add_lazylinkclient(lclient_p,target_p); |
887 |
} |
888 |
} |
889 |
} |