1 |
/* |
2 |
* cmode.C: Channel mode change tracking. |
3 |
* Rights to this code are documented in doc/pod/license.pod. |
4 |
* |
5 |
* Copyright © 2005-2007 Atheme Project (http://www.atheme.org) |
6 |
*/ |
7 |
|
8 |
static char const rcsid[] = "$Id: cmode.C,v 1.4 2007-08-28 17:08:12 pippijn Exp $"; |
9 |
|
10 |
#include "atheme.h" |
11 |
#include <account/chanacs.h> |
12 |
#include <account/mychan.h> |
13 |
|
14 |
/* convert mode flags to a text mode string */ |
15 |
char * |
16 |
flags_to_string (int flags) |
17 |
{ |
18 |
static char buf[32]; |
19 |
char *s = buf; |
20 |
int i; |
21 |
|
22 |
for (i = 0; mode_list[i].mode != 0; i++) |
23 |
if (flags & mode_list[i].value) |
24 |
*s++ = mode_list[i].mode; |
25 |
|
26 |
*s = 0; |
27 |
|
28 |
return buf; |
29 |
} |
30 |
|
31 |
/* convert a mode character to a flag. */ |
32 |
int |
33 |
mode_to_flag (char c) |
34 |
{ |
35 |
int i; |
36 |
|
37 |
for (i = 0; mode_list[i].mode != 0 && mode_list[i].mode != c; i++); |
38 |
|
39 |
return mode_list[i].value; |
40 |
} |
41 |
|
42 |
/* yeah, this should be fun. */ |
43 |
/* If source == NULL, apply a mode change from outside to our structures |
44 |
* If source != NULL, apply the mode change and send it out from that user |
45 |
*/ |
46 |
void |
47 |
channel_mode (user_t *source, channel_t *chan, int parc, char const * const parv[]) |
48 |
{ |
49 |
bool matched = false; |
50 |
bool simple_modes_changed = false; |
51 |
int i, parpos = 0, whatt = MTYPE_NUL; |
52 |
unsigned int newlimit; |
53 |
char const *pos = parv[0]; |
54 |
mychan_t *mc; |
55 |
chanuser_t *cu = NULL; |
56 |
user_t *first_deopped_service = NULL; |
57 |
node_t *n; |
58 |
|
59 |
if ((!pos) || (*pos == '\0')) |
60 |
return; |
61 |
|
62 |
if (!chan) |
63 |
return; |
64 |
|
65 |
/* SJOIN modes of 0 means no change */ |
66 |
if (*pos == '0') |
67 |
return; |
68 |
|
69 |
for (; *pos != '\0'; pos++) |
70 |
{ |
71 |
matched = false; |
72 |
|
73 |
if (*pos == '+') |
74 |
{ |
75 |
whatt = MTYPE_ADD; |
76 |
continue; |
77 |
} |
78 |
if (*pos == '-') |
79 |
{ |
80 |
whatt = MTYPE_DEL; |
81 |
continue; |
82 |
} |
83 |
|
84 |
for (i = 0; mode_list[i].mode != '\0'; i++) |
85 |
{ |
86 |
if (*pos == mode_list[i].mode) |
87 |
{ |
88 |
matched = true; |
89 |
|
90 |
if (whatt == MTYPE_ADD) |
91 |
{ |
92 |
if (!(chan->modes & mode_list[i].value)) |
93 |
simple_modes_changed = true; |
94 |
chan->modes |= mode_list[i].value; |
95 |
} |
96 |
else |
97 |
{ |
98 |
if (chan->modes & mode_list[i].value) |
99 |
simple_modes_changed = true; |
100 |
chan->modes &= ~mode_list[i].value; |
101 |
} |
102 |
|
103 |
if (source) |
104 |
modestack_mode_simple (source->nick, chan, whatt, mode_list[i].value); |
105 |
|
106 |
break; |
107 |
} |
108 |
} |
109 |
if (matched) |
110 |
continue; |
111 |
|
112 |
for (i = 0; ignore_mode_list[i].mode != '\0'; i++) |
113 |
{ |
114 |
if (*pos == ignore_mode_list[i].mode) |
115 |
{ |
116 |
matched = true; |
117 |
if (whatt == MTYPE_ADD) |
118 |
{ |
119 |
if (++parpos >= parc) |
120 |
break; |
121 |
if (source && !ignore_mode_list[i].check (parv[parpos], chan, NULL, NULL, NULL)) |
122 |
break; |
123 |
if (chan->extmodes[i]) |
124 |
{ |
125 |
if (strcmp (chan->extmodes[i], parv[parpos])) |
126 |
simple_modes_changed = true; |
127 |
sfree (chan->extmodes[i]); |
128 |
} |
129 |
else |
130 |
simple_modes_changed = true; |
131 |
chan->extmodes[i] = sstrdup (parv[parpos]); |
132 |
if (source) |
133 |
modestack_mode_ext (source->nick, chan, MTYPE_ADD, i, chan->extmodes[i]); |
134 |
} |
135 |
else |
136 |
{ |
137 |
if (chan->extmodes[i]) |
138 |
{ |
139 |
simple_modes_changed = true; |
140 |
sfree (chan->extmodes[i]); |
141 |
chan->extmodes[i] = NULL; |
142 |
} |
143 |
if (source) |
144 |
modestack_mode_ext (source->nick, chan, MTYPE_DEL, i, NULL); |
145 |
} |
146 |
break; |
147 |
} |
148 |
} |
149 |
if (matched) |
150 |
continue; |
151 |
|
152 |
if (*pos == 'l') |
153 |
{ |
154 |
if (whatt == MTYPE_ADD) |
155 |
{ |
156 |
if (++parpos >= parc) |
157 |
continue; |
158 |
chan->modes |= CMODE_LIMIT; |
159 |
newlimit = atoi (parv[parpos]); |
160 |
if (chan->limit != newlimit) |
161 |
simple_modes_changed = true; |
162 |
chan->limit = newlimit; |
163 |
if (source) |
164 |
modestack_mode_limit (source->nick, chan, MTYPE_ADD, chan->limit); |
165 |
} |
166 |
else |
167 |
{ |
168 |
chan->modes &= ~CMODE_LIMIT; |
169 |
if (chan->limit != 0) |
170 |
simple_modes_changed = true; |
171 |
chan->limit = 0; |
172 |
if (source) |
173 |
modestack_mode_limit (source->nick, chan, MTYPE_DEL, 0); |
174 |
} |
175 |
continue; |
176 |
} |
177 |
|
178 |
if (*pos == 'k') |
179 |
{ |
180 |
if (whatt == MTYPE_ADD) |
181 |
{ |
182 |
if (++parpos >= parc) |
183 |
continue; |
184 |
chan->modes |= CMODE_KEY; |
185 |
if (chan->key) |
186 |
{ |
187 |
if (strcmp (chan->key, parv[parpos])) |
188 |
simple_modes_changed = true; |
189 |
sfree (chan->key); |
190 |
} |
191 |
else |
192 |
simple_modes_changed = true; |
193 |
chan->key = sstrdup (parv[parpos]); |
194 |
if (source) |
195 |
modestack_mode_param (source->nick, chan, MTYPE_ADD, 'k', chan->key); |
196 |
} |
197 |
else |
198 |
{ |
199 |
if (chan->key) |
200 |
simple_modes_changed = true; |
201 |
chan->modes &= ~CMODE_KEY; |
202 |
if (source) |
203 |
modestack_mode_param (source->nick, chan, MTYPE_DEL, 'k', chan->key ? chan->key : "*"); |
204 |
sfree (chan->key); |
205 |
chan->key = NULL; |
206 |
/* ratbox typically sends either the key or a `*' on -k, so you |
207 |
* should eat a parameter |
208 |
*/ |
209 |
parpos++; |
210 |
} |
211 |
continue; |
212 |
} |
213 |
|
214 |
if (strchr (ircd->ban_like_modes, *pos)) |
215 |
{ |
216 |
if (++parpos >= parc) |
217 |
continue; |
218 |
if (whatt == MTYPE_ADD) |
219 |
{ |
220 |
chanban_add (chan, parv[parpos], *pos); |
221 |
if (source) |
222 |
modestack_mode_param (source->nick, chan, MTYPE_ADD, *pos, parv[parpos]); |
223 |
} |
224 |
else |
225 |
{ |
226 |
chanban_t *c; |
227 |
|
228 |
c = chanban_find (chan, parv[parpos], *pos); |
229 |
chanban_delete (c); |
230 |
if (source) |
231 |
modestack_mode_param (source->nick, chan, MTYPE_DEL, *pos, parv[parpos]); |
232 |
} |
233 |
continue; |
234 |
} |
235 |
|
236 |
for (i = 0; status_mode_list[i].mode != '\0'; i++) |
237 |
{ |
238 |
if (*pos == status_mode_list[i].mode) |
239 |
{ |
240 |
if (++parpos >= parc) |
241 |
break; |
242 |
cu = chanuser_find (chan, source ? user_find_named (parv[parpos]) : user_find (parv[parpos])); |
243 |
|
244 |
if (cu == NULL) |
245 |
{ |
246 |
slog (LG_ERROR, "channel_mode(): MODE %s %c%c %s", chan->name, (whatt == MTYPE_ADD) ? '+' : '-', status_mode_list[i].mode, parv[parpos]); |
247 |
break; |
248 |
} |
249 |
|
250 |
matched = true; |
251 |
|
252 |
if (whatt == MTYPE_ADD) |
253 |
{ |
254 |
cu->modes |= status_mode_list[i].value; |
255 |
|
256 |
if (source) |
257 |
modestack_mode_param (source->nick, chan, MTYPE_ADD, *pos, CLIENT_NAME (cu->user)); |
258 |
|
259 |
/* see if they did something we have to undo */ |
260 |
if (source == NULL && cu->user->server != me.me && chansvs.me != NULL && (mc = mychan_t::find (chan->name)) && mc->flags & MC_SECURE) |
261 |
{ |
262 |
if (status_mode_list[i].mode == 'o' && !(chanacs_user_flags (mc, cu->user) & (CA_OP | CA_AUTOOP))) |
263 |
{ |
264 |
/* they were opped and aren't on the list, deop them */ |
265 |
modestack_mode_param (chansvs.nick, chan, MTYPE_DEL, 'o', CLIENT_NAME (cu->user)); |
266 |
cu->modes &= ~status_mode_list[i].value; |
267 |
} |
268 |
else if (ircd->uses_halfops && status_mode_list[i].mode == ircd->halfops_mchar[1] && !(chanacs_user_flags (mc, cu->user) & (CA_HALFOP | CA_AUTOHALFOP))) |
269 |
{ |
270 |
/* same for halfops -- jilles */ |
271 |
modestack_mode_param (chansvs.nick, chan, MTYPE_DEL, ircd->halfops_mchar[1], CLIENT_NAME (cu->user)); |
272 |
cu->modes &= ~status_mode_list[i].value; |
273 |
} |
274 |
} |
275 |
} |
276 |
else |
277 |
{ |
278 |
if (cu->user->server == me.me && status_mode_list[i].value == CMODE_OP) |
279 |
{ |
280 |
if (source == NULL) |
281 |
{ |
282 |
if (first_deopped_service == NULL) |
283 |
{ |
284 |
if (chan->nummembers > 1) |
285 |
{ |
286 |
slog (LG_DEBUG, "channel_mode(): %s deopped on %s, rejoining", cu->user->nick, chan->name); |
287 |
phandler->part_sts (chan, cu->user); |
288 |
phandler->join_sts (chan, cu->user, false, channel_modes (chan, true)); |
289 |
} |
290 |
else |
291 |
{ |
292 |
slog (LG_DEBUG, "channel_mode(): %s deopped on %s, opping from other service", cu->user->nick, chan->name); |
293 |
LIST_FOREACH (n, me.me->userlist.head) |
294 |
{ |
295 |
if (n->data != cu->user) |
296 |
{ |
297 |
modestack_mode_param (((user_t *) n->data)->nick, chan, MTYPE_ADD, *pos, CLIENT_NAME (cu->user)); |
298 |
break; |
299 |
} |
300 |
} |
301 |
} |
302 |
first_deopped_service = cu->user; |
303 |
} |
304 |
else if (first_deopped_service != cu->user) |
305 |
{ |
306 |
slog (LG_DEBUG, "channel_mode(): %s deopped on %s, opping from %s", cu->user->nick, chan->name, first_deopped_service->nick); |
307 |
modestack_mode_param (first_deopped_service->nick, chan, MTYPE_ADD, *pos, CLIENT_NAME (cu->user)); |
308 |
} |
309 |
|
310 |
} |
311 |
|
312 |
continue; |
313 |
} |
314 |
|
315 |
if (source) |
316 |
modestack_mode_param (source->nick, chan, MTYPE_DEL, *pos, CLIENT_NAME (cu->user)); |
317 |
|
318 |
cu->modes &= ~status_mode_list[i].value; |
319 |
} |
320 |
|
321 |
break; |
322 |
} |
323 |
} |
324 |
if (matched) |
325 |
continue; |
326 |
|
327 |
slog (LG_DEBUG, "channel_mode(): mode %c not matched", *pos); |
328 |
} |
329 |
|
330 |
if (source == NULL && chansvs.me != NULL) |
331 |
{ |
332 |
mc = mychan_t::find (chan->name); |
333 |
if (mc != NULL && (simple_modes_changed || (mc->flags & MC_MLOCK_CHECK))) |
334 |
check_modes (mc, true); |
335 |
} |
336 |
} |
337 |
|
338 |
void |
339 |
channel_mode (user_t *source, channel_t *chan, char const * const arg) |
340 |
{ |
341 |
char const * const parv[] = { arg }; |
342 |
channel_mode (source, chan, 1, parv); |
343 |
} |
344 |
|
345 |
/* like channel_mode() but parv array passed as varargs */ |
346 |
void |
347 |
channel_mode_va (user_t *source, channel_t *chan, int parc, char const * const parv0, ...) |
348 |
{ |
349 |
char const *parv[255]; |
350 |
int i; |
351 |
va_list va; |
352 |
|
353 |
if (parc == 0) |
354 |
return; |
355 |
#if 0 |
356 |
if (parc > sizeof parv / sizeof *parv) |
357 |
{ |
358 |
slog (LG_DEBUG, "channel_mode_va(): parc too big (%d), truncating", parc); |
359 |
parc = sizeof parv / sizeof *parv; |
360 |
} |
361 |
#endif |
362 |
parv[0] = parv0; |
363 |
va_start (va, parv0); |
364 |
for (i = 1; i < parc; i++) |
365 |
parv[i] = va_arg (va, char *); |
366 |
va_end (va); |
367 |
channel_mode (source, chan, parc, parv); |
368 |
} |
369 |
|
370 |
static struct modestackdata |
371 |
{ |
372 |
char source[HOSTLEN]; /* name */ |
373 |
channel_t *channel; |
374 |
int modes_on; |
375 |
int modes_off; |
376 |
unsigned int limit; |
377 |
char extmodes[MAXEXTMODES][512]; |
378 |
bool limitused, extmodesused[MAXEXTMODES]; |
379 |
char pmodes[2 * MAXMODES + 2]; |
380 |
char params[512]; /* includes leading space */ |
381 |
int totalparamslen; /* includes leading space */ |
382 |
int totallen; |
383 |
int paramcount; |
384 |
|
385 |
unsigned int event; |
386 |
} modestackdata; |
387 |
|
388 |
static void modestack_calclen (struct modestackdata *md); |
389 |
|
390 |
static void |
391 |
modestack_debugprint (struct modestackdata *md) |
392 |
{ |
393 |
int i; |
394 |
|
395 |
slog (LG_DEBUG, "modestack_debugprint(): %s MODE %s", md->source, md->channel->name); |
396 |
slog (LG_DEBUG, "simple %x/%x", md->modes_on, md->modes_off); |
397 |
if (md->limitused) |
398 |
slog (LG_DEBUG, "limit %u", (unsigned) md->limit); |
399 |
for (i = 0; i < MAXEXTMODES; i++) |
400 |
if (md->extmodesused[i]) |
401 |
slog (LG_DEBUG, "ext %d %s", i, md->extmodes[i]); |
402 |
slog (LG_DEBUG, "pmodes %s%s", md->pmodes, md->params); |
403 |
modestack_calclen (md); |
404 |
slog (LG_DEBUG, "totallen %d/%d", md->totalparamslen, md->totallen); |
405 |
} |
406 |
|
407 |
/* calculates the length fields */ |
408 |
static void |
409 |
modestack_calclen (struct modestackdata *md) |
410 |
{ |
411 |
int i; |
412 |
char const *p; |
413 |
|
414 |
md->totallen = strlen (md->source) + USERLEN + HOSTLEN + 1 + 4 + 1 + 10 + strlen (md->channel->name) + 1; |
415 |
md->totallen += 2 + 32 + strlen (md->pmodes); |
416 |
md->totalparamslen = 0; |
417 |
md->paramcount = (md->limitused != 0); |
418 |
if (md->limitused && md->limit != 0) |
419 |
md->totalparamslen += 11; |
420 |
for (i = 0; i < MAXEXTMODES; i++) |
421 |
if (md->extmodesused[i]) |
422 |
{ |
423 |
md->paramcount++; |
424 |
if (*md->extmodes[i] != '\0') |
425 |
md->totalparamslen += 1 + strlen (md->extmodes[i]); |
426 |
} |
427 |
md->totalparamslen += strlen (md->params); |
428 |
p = md->params; |
429 |
while (*p != '\0') |
430 |
if (*p++ == ' ') |
431 |
md->paramcount++; |
432 |
md->totallen += md->totalparamslen; |
433 |
} |
434 |
|
435 |
/* clears the data */ |
436 |
static void |
437 |
modestack_clear (struct modestackdata *md) |
438 |
{ |
439 |
int i; |
440 |
|
441 |
md->modes_on = 0; |
442 |
md->modes_off = 0; |
443 |
md->limitused = 0; |
444 |
for (i = 0; i < MAXEXTMODES; i++) |
445 |
md->extmodesused[i] = 0, *md->extmodes[i] = '\0'; |
446 |
md->pmodes[0] = '\0'; |
447 |
md->params[0] = '\0'; |
448 |
md->totallen = 0; |
449 |
md->totalparamslen = 0; |
450 |
md->paramcount = 0; |
451 |
} |
452 |
|
453 |
/* sends a MODE and clears the data */ |
454 |
static void |
455 |
modestack_flush (struct modestackdata *md) |
456 |
{ |
457 |
char buf[512]; |
458 |
char *end, *p; |
459 |
int dir = MTYPE_NUL; |
460 |
int i; |
461 |
|
462 |
p = buf; |
463 |
end = buf + sizeof buf; |
464 |
|
465 |
/* first do the mode letters */ |
466 |
if (md->modes_off) |
467 |
{ |
468 |
if (dir != MTYPE_DEL) |
469 |
dir = MTYPE_DEL, *p++ = '-'; |
470 |
strlcpy (p, flags_to_string (md->modes_off), end - p); |
471 |
p += strlen (p); |
472 |
} |
473 |
if (md->limitused && md->limit == 0) |
474 |
{ |
475 |
if (dir != MTYPE_DEL) |
476 |
dir = MTYPE_DEL, *p++ = '-'; |
477 |
*p++ = 'l'; |
478 |
} |
479 |
for (i = 0; i < MAXEXTMODES; i++) |
480 |
{ |
481 |
if (md->extmodesused[i] && *md->extmodes[i] == '\0') |
482 |
{ |
483 |
if (dir != MTYPE_DEL) |
484 |
dir = MTYPE_DEL, *p++ = '-'; |
485 |
*p++ = ignore_mode_list[i].mode; |
486 |
} |
487 |
} |
488 |
if (md->modes_on) |
489 |
{ |
490 |
if (dir != MTYPE_ADD) |
491 |
dir = MTYPE_ADD, *p++ = '+'; |
492 |
strlcpy (p, flags_to_string (md->modes_on), end - p); |
493 |
p += strlen (p); |
494 |
} |
495 |
if (md->limitused && md->limit != 0) |
496 |
{ |
497 |
if (dir != MTYPE_ADD) |
498 |
dir = MTYPE_ADD, *p++ = '+'; |
499 |
*p++ = 'l'; |
500 |
} |
501 |
for (i = 0; i < MAXEXTMODES; i++) |
502 |
{ |
503 |
if (md->extmodesused[i] && *md->extmodes[i] != '\0') |
504 |
{ |
505 |
if (dir != MTYPE_ADD) |
506 |
dir = MTYPE_ADD, *p++ = '+'; |
507 |
*p++ = ignore_mode_list[i].mode; |
508 |
} |
509 |
} |
510 |
strlcpy (p, md->pmodes + ((dir == MTYPE_ADD && *md->pmodes == '+') || (dir == MTYPE_DEL && *md->pmodes == '-') ? 1 : 0), end - p); |
511 |
p += strlen (p); |
512 |
|
513 |
/* all mode letters done, now for some checks */ |
514 |
if (p == buf) |
515 |
{ |
516 |
/*slog(LG_DEBUG, "modestack_flush(): nothing to do"); */ |
517 |
return; |
518 |
} |
519 |
if (p + md->totalparamslen >= end) |
520 |
{ |
521 |
slog (LG_ERROR, "modestack_flush() overflow: %s", buf); |
522 |
modestack_debugprint (md); |
523 |
modestack_clear (md); |
524 |
return; |
525 |
} |
526 |
|
527 |
/* now the parameters, in the same order */ |
528 |
if (md->limitused && md->limit != 0) |
529 |
{ |
530 |
snprintf (p, end - p, " %u", (unsigned) md->limit); |
531 |
p += strlen (p); |
532 |
} |
533 |
for (i = 0; i < MAXEXTMODES; i++) |
534 |
{ |
535 |
if (md->extmodesused[i] && *md->extmodes[i] != '\0') |
536 |
{ |
537 |
snprintf (p, end - p, " %s", md->extmodes[i]); |
538 |
p += strlen (p); |
539 |
} |
540 |
} |
541 |
if (*md->params) |
542 |
{ |
543 |
strlcpy (p, md->params, end - p); |
544 |
p += strlen (p); |
545 |
} |
546 |
phandler->mode_sts (md->source, md->channel, buf); |
547 |
modestack_clear (md); |
548 |
} |
549 |
|
550 |
static struct modestackdata * |
551 |
modestack_init (char *source, channel_t *channel) |
552 |
{ |
553 |
if (irccasecmp (source, modestackdata.source) || channel != modestackdata.channel) |
554 |
{ |
555 |
/*slog(LG_DEBUG, "modestack_init(): new source/channel, flushing"); */ |
556 |
modestack_flush (&modestackdata); |
557 |
} |
558 |
strlcpy (modestackdata.source, source, sizeof modestackdata.source); |
559 |
modestackdata.channel = channel; |
560 |
return &modestackdata; |
561 |
} |
562 |
|
563 |
static void |
564 |
modestack_add_simple (struct modestackdata *md, int dir, int flags) |
565 |
{ |
566 |
if (dir == MTYPE_ADD) |
567 |
md->modes_on |= flags, md->modes_off &= ~flags; |
568 |
else if (dir == MTYPE_DEL) |
569 |
md->modes_off |= flags, md->modes_on &= ~flags; |
570 |
else |
571 |
slog (LG_ERROR, "modestack_add_simple(): invalid direction"); |
572 |
} |
573 |
|
574 |
static void |
575 |
modestack_add_limit (struct modestackdata *md, int dir, unsigned int limit) |
576 |
{ |
577 |
md->limitused = 0; |
578 |
modestack_calclen (md); |
579 |
if (md->paramcount >= MAXMODES) |
580 |
modestack_flush (md); |
581 |
if (dir == MTYPE_ADD) |
582 |
{ |
583 |
if (md->totallen + 11 > 512) |
584 |
modestack_flush (md); |
585 |
md->limit = limit; |
586 |
} |
587 |
else if (dir == MTYPE_DEL) |
588 |
md->limit = 0; |
589 |
else |
590 |
slog (LG_ERROR, "modestack_add_limit(): invalid direction"); |
591 |
md->limitused = 1; |
592 |
} |
593 |
|
594 |
static void |
595 |
modestack_add_ext (struct modestackdata *md, int dir, int i, char const * const value) |
596 |
{ |
597 |
md->extmodesused[i] = 0; |
598 |
modestack_calclen (md); |
599 |
if (md->paramcount >= MAXMODES) |
600 |
modestack_flush (md); |
601 |
if (dir == MTYPE_ADD) |
602 |
{ |
603 |
if (md->totallen + 1 + strlen (value) > 512) |
604 |
modestack_flush (md); |
605 |
strlcpy (md->extmodes[i], value, sizeof md->extmodes[i]); |
606 |
} |
607 |
else if (dir == MTYPE_DEL) |
608 |
md->extmodes[i][0] = '\0'; |
609 |
else |
610 |
slog (LG_ERROR, "modestack_add_ext(): invalid direction"); |
611 |
md->extmodesused[i] = 1; |
612 |
} |
613 |
|
614 |
static void |
615 |
modestack_add_param (struct modestackdata *md, int dir, char type, char const * const value) |
616 |
{ |
617 |
char *p; |
618 |
int n = 0, i; |
619 |
char dir2 = MTYPE_NUL; |
620 |
char str[3]; |
621 |
|
622 |
p = md->pmodes; |
623 |
while (*p != '\0') |
624 |
{ |
625 |
if (*p == '+') |
626 |
dir2 = MTYPE_ADD; |
627 |
else if (*p == '-') |
628 |
dir2 = MTYPE_DEL; |
629 |
else |
630 |
n++; |
631 |
p++; |
632 |
} |
633 |
n += (md->limitused != 0); |
634 |
for (i = 0; i < MAXEXTMODES; i++) |
635 |
n += (md->extmodesused[i] != 0); |
636 |
modestack_calclen (md); |
637 |
if (n >= MAXMODES || md->totallen + (dir != dir2) + 2 + strlen (value) > 512 || (type == 'k' && strchr (md->pmodes, 'k'))) |
638 |
{ |
639 |
modestack_flush (md); |
640 |
dir2 = MTYPE_NUL; |
641 |
} |
642 |
if (dir != dir2) |
643 |
{ |
644 |
str[0] = dir == MTYPE_ADD ? '+' : '-'; |
645 |
str[1] = type; |
646 |
str[2] = '\0'; |
647 |
} |
648 |
else |
649 |
{ |
650 |
str[0] = type; |
651 |
str[1] = '\0'; |
652 |
} |
653 |
strlcat (md->pmodes, str, sizeof md->pmodes); |
654 |
strlcat (md->params, " ", sizeof md->params); |
655 |
strlcat (md->params, value, sizeof md->params); |
656 |
} |
657 |
|
658 |
static void |
659 |
modestack_flush_callback (void *arg) |
660 |
{ |
661 |
modestack_flush ((struct modestackdata *) arg); |
662 |
((struct modestackdata *) arg)->event = 0; |
663 |
} |
664 |
|
665 |
/* flush pending modes for a certain channel */ |
666 |
void |
667 |
modestack_flush_channel (channel_t *channel) |
668 |
{ |
669 |
if (channel == NULL || channel == modestackdata.channel) |
670 |
modestack_flush (&modestackdata); |
671 |
} |
672 |
|
673 |
/* forget pending modes for a certain channel */ |
674 |
void |
675 |
modestack_forget_channel (channel_t *channel) |
676 |
{ |
677 |
if (channel == NULL || channel == modestackdata.channel) |
678 |
modestack_clear (&modestackdata); |
679 |
} |
680 |
|
681 |
/* handle a channel that is going to be destroyed */ |
682 |
void |
683 |
modestack_finalize_channel (channel_t *channel) |
684 |
{ |
685 |
user_t *u; |
686 |
|
687 |
if (channel == modestackdata.channel) |
688 |
{ |
689 |
if (modestackdata.modes_off & ircd->perm_mode) |
690 |
{ |
691 |
/* A mode change is not a good way to destroy a channel */ |
692 |
slog (LG_DEBUG, "modestack_finalize_channel(): flushing modes for %s to clear perm mode", channel->name); |
693 |
u = user_find_named (modestackdata.source); |
694 |
if (u != NULL) |
695 |
phandler->join_sts (channel, u, false, channel_modes (channel, true)); |
696 |
modestack_flush (&modestackdata); |
697 |
if (u != NULL) |
698 |
phandler->part_sts (channel, u); |
699 |
} |
700 |
else |
701 |
modestack_clear (&modestackdata); |
702 |
} |
703 |
} |
704 |
|
705 |
/* stack simple modes without parameters */ |
706 |
void |
707 |
modestack_mode_simple (char *source, channel_t *channel, int dir, int flags) |
708 |
{ |
709 |
struct modestackdata *md; |
710 |
|
711 |
if (flags == 0) |
712 |
return; |
713 |
md = modestack_init (source, channel); |
714 |
modestack_add_simple (md, dir, flags); |
715 |
if (!md->event) |
716 |
md->event = event_add_once ("flush_cmode_callback", modestack_flush_callback, md, 0); |
717 |
} |
718 |
|
719 |
/* stack a limit */ |
720 |
void |
721 |
modestack_mode_limit (char *source, channel_t *channel, int dir, unsigned int limit) |
722 |
{ |
723 |
struct modestackdata *md; |
724 |
|
725 |
md = modestack_init (source, channel); |
726 |
modestack_add_limit (md, dir, limit); |
727 |
if (!md->event) |
728 |
md->event = event_add_once ("flush_cmode_callback", modestack_flush_callback, md, 0); |
729 |
} |
730 |
|
731 |
/* stack a non-standard type C mode */ |
732 |
void |
733 |
modestack_mode_ext (char *source, channel_t *channel, int dir, int i, char const * const value) |
734 |
{ |
735 |
struct modestackdata *md; |
736 |
|
737 |
md = modestack_init (source, channel); |
738 |
if (i < 0 || i >= MAXEXTMODES) |
739 |
{ |
740 |
slog (LG_ERROR, "modestack_mode_ext(): i=%d out of range (value=\"%s\")", i, value); |
741 |
return; |
742 |
} |
743 |
modestack_add_ext (md, dir, i, value); |
744 |
if (!md->event) |
745 |
md->event = event_add_once ("flush_cmode_callback", modestack_flush_callback, md, 0); |
746 |
} |
747 |
|
748 |
/* stack a type A, B or E mode */ |
749 |
void |
750 |
modestack_mode_param (char *source, channel_t *channel, int dir, char type, char const * const value) |
751 |
{ |
752 |
struct modestackdata *md; |
753 |
|
754 |
md = modestack_init (source, channel); |
755 |
modestack_add_param (md, dir, type, value); |
756 |
if (!md->event) |
757 |
md->event = event_add_once ("flush_cmode_callback", modestack_flush_callback, md, 0); |
758 |
} |
759 |
|
760 |
/* Clear all simple modes (+imnpstkl etc) on a channel */ |
761 |
void |
762 |
clear_simple_modes (channel_t *c) |
763 |
{ |
764 |
int i; |
765 |
|
766 |
if (c == NULL) |
767 |
return; |
768 |
c->modes = 0; |
769 |
c->limit = 0; |
770 |
if (c->key != NULL) |
771 |
sfree (c->key); |
772 |
c->key = NULL; |
773 |
for (i = 0; i < MAXEXTMODES; i++) |
774 |
if (c->extmodes[i] != NULL) |
775 |
{ |
776 |
sfree (c->extmodes[i]); |
777 |
c->extmodes[i] = NULL; |
778 |
} |
779 |
} |
780 |
|
781 |
char * |
782 |
channel_modes (channel_t *c, bool doparams) |
783 |
{ |
784 |
static char fullmode[512]; |
785 |
char params[512]; |
786 |
int i; |
787 |
char *p; |
788 |
char *q; |
789 |
|
790 |
if (c == NULL) |
791 |
return NULL; |
792 |
|
793 |
p = fullmode; |
794 |
q = params; |
795 |
*p++ = '+'; |
796 |
*q = '\0'; |
797 |
for (i = 0; mode_list[i].mode != '\0'; i++) |
798 |
{ |
799 |
if (c->modes & mode_list[i].value) |
800 |
*p++ = mode_list[i].mode; |
801 |
} |
802 |
if (c->limit) |
803 |
{ |
804 |
*p++ = 'l'; |
805 |
if (doparams) |
806 |
{ |
807 |
snprintf (q, params + sizeof params - q, " %d", c->limit); |
808 |
q += strlen (q); |
809 |
} |
810 |
} |
811 |
if (c->key) |
812 |
{ |
813 |
*p++ = 'k'; |
814 |
if (doparams) |
815 |
{ |
816 |
*q++ = ' '; |
817 |
strlcpy (q, c->key, params + sizeof params - q); |
818 |
q += strlen (q); |
819 |
} |
820 |
} |
821 |
for (i = 0; ignore_mode_list[i].mode != '\0'; i++) |
822 |
{ |
823 |
if (c->extmodes[i] != NULL) |
824 |
{ |
825 |
*p++ = ignore_mode_list[i].mode; |
826 |
if (doparams) |
827 |
{ |
828 |
*q++ = ' '; |
829 |
strlcpy (q, c->extmodes[i], params + sizeof params - q); |
830 |
q += strlen (q); |
831 |
} |
832 |
} |
833 |
} |
834 |
strlcpy (p, params, fullmode + sizeof fullmode - p); |
835 |
return fullmode; |
836 |
} |
837 |
|
838 |
void |
839 |
check_modes (mychan_t *mychan, bool sendnow) |
840 |
{ |
841 |
int modes; |
842 |
int i; |
843 |
metadata::item *md; |
844 |
char *p, *q; |
845 |
char str2[512]; |
846 |
|
847 |
if (!mychan || !mychan->chan) |
848 |
return; |
849 |
mychan->flags &= ~MC_MLOCK_CHECK; |
850 |
|
851 |
/* check what's locked on */ |
852 |
modes = ~mychan->chan->modes & mychan->mlock_on; |
853 |
modes &= ~(CMODE_KEY | CMODE_LIMIT); |
854 |
if (sendnow) |
855 |
modestack_mode_simple (chansvs.nick, mychan->chan, MTYPE_ADD, modes); |
856 |
mychan->chan->modes |= modes; |
857 |
|
858 |
if (mychan->mlock_limit && mychan->mlock_limit != mychan->chan->limit) |
859 |
{ |
860 |
mychan->chan->limit = mychan->mlock_limit; |
861 |
if (sendnow) |
862 |
modestack_mode_limit (chansvs.nick, mychan->chan, MTYPE_ADD, mychan->mlock_limit); |
863 |
} |
864 |
|
865 |
if (mychan->mlock_key) |
866 |
{ |
867 |
if (mychan->chan->key && strcmp (mychan->chan->key, mychan->mlock_key)) |
868 |
{ |
869 |
/* some ircds still need this... :\ -- jilles */ |
870 |
if (sendnow) |
871 |
modestack_mode_param (chansvs.nick, mychan->chan, MTYPE_DEL, 'k', mychan->chan->key); |
872 |
sfree (mychan->chan->key); |
873 |
mychan->chan->key = NULL; |
874 |
} |
875 |
|
876 |
if (mychan->chan->key == NULL) |
877 |
{ |
878 |
mychan->chan->key = sstrdup (mychan->mlock_key); |
879 |
if (sendnow) |
880 |
modestack_mode_param (chansvs.nick, mychan->chan, MTYPE_ADD, 'k', mychan->mlock_key); |
881 |
} |
882 |
} |
883 |
|
884 |
/* check what's locked off */ |
885 |
modes = mychan->chan->modes & mychan->mlock_off; |
886 |
modes &= ~(CMODE_KEY | CMODE_LIMIT); |
887 |
if (sendnow) |
888 |
modestack_mode_simple (chansvs.nick, mychan->chan, MTYPE_DEL, modes); |
889 |
mychan->chan->modes &= ~modes; |
890 |
|
891 |
if (mychan->chan->limit && (mychan->mlock_off & CMODE_LIMIT)) |
892 |
{ |
893 |
if (sendnow) |
894 |
modestack_mode_limit (chansvs.nick, mychan->chan, MTYPE_DEL, 0); |
895 |
mychan->chan->limit = 0; |
896 |
} |
897 |
|
898 |
if (mychan->chan->key && (mychan->mlock_off & CMODE_KEY)) |
899 |
{ |
900 |
if (sendnow) |
901 |
modestack_mode_param (chansvs.nick, mychan->chan, MTYPE_DEL, 'k', mychan->chan->key); |
902 |
sfree (mychan->chan->key); |
903 |
mychan->chan->key = NULL; |
904 |
} |
905 |
|
906 |
/* non-standard type C modes separately */ |
907 |
md = mychan->find_metadata ("private:mlockext"); |
908 |
if (md != NULL) |
909 |
{ |
910 |
p = md->value; |
911 |
while (*p != '\0') |
912 |
{ |
913 |
for (i = 0; ignore_mode_list[i].mode != '\0'; i++) |
914 |
{ |
915 |
if (ignore_mode_list[i].mode == *p) |
916 |
{ |
917 |
if ((p[1] == ' ' || p[1] == '\0') && mychan->chan->extmodes[i] != NULL) |
918 |
{ |
919 |
sfree (mychan->chan->extmodes[i]); |
920 |
mychan->chan->extmodes[i] = NULL; |
921 |
if (sendnow) |
922 |
modestack_mode_ext (chansvs.nick, mychan->chan, MTYPE_DEL, i, NULL); |
923 |
} |
924 |
else if (p[1] != ' ' && p[1] != '\0') |
925 |
{ |
926 |
strlcpy (str2, p + 1, sizeof str2); |
927 |
q = strchr (str2, ' '); |
928 |
if (q != NULL) |
929 |
*q = '\0'; |
930 |
if ((mychan->chan->extmodes[i] == NULL || strcmp (mychan->chan->extmodes[i], str2)) && ignore_mode_list[i].check (str2, mychan->chan, mychan, NULL, NULL)) |
931 |
{ |
932 |
if (mychan->chan->extmodes[i] != NULL) |
933 |
sfree (mychan->chan->extmodes[i]); |
934 |
mychan->chan->extmodes[i] = sstrdup (str2); |
935 |
if (sendnow) |
936 |
modestack_mode_ext (chansvs.nick, mychan->chan, MTYPE_ADD, i, mychan->chan->extmodes[i]); |
937 |
} |
938 |
} |
939 |
} |
940 |
} |
941 |
while (*p != ' ' && *p != '\0') |
942 |
p++; |
943 |
while (*p == ' ') |
944 |
p++; |
945 |
} |
946 |
} |
947 |
|
948 |
} |
949 |
|
950 |
/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs |
951 |
* vim:ts=8 |
952 |
* vim:sw=8 |
953 |
* vim:noexpandtab |
954 |
*/ |