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 1.6 2007-09-05 11:23:15 pippijn Exp $"; |
9 |
|
10 |
#include "atheme.h" |
11 |
#include "servers.h" |
12 |
#include <account/chanacs.h> |
13 |
#include <account/mychan.h> |
14 |
|
15 |
/* convert mode flags to a text mode string */ |
16 |
char * |
17 |
flags_to_string (int flags) |
18 |
{ |
19 |
static char buf[32]; |
20 |
char *s = buf; |
21 |
int i; |
22 |
|
23 |
for (i = 0; mode_list[i].mode != 0; i++) |
24 |
if (flags & mode_list[i].value) |
25 |
*s++ = mode_list[i].mode; |
26 |
|
27 |
*s = 0; |
28 |
|
29 |
return buf; |
30 |
} |
31 |
|
32 |
/* convert a mode character to a flag. */ |
33 |
int |
34 |
mode_to_flag (char c) |
35 |
{ |
36 |
int i; |
37 |
|
38 |
for (i = 0; mode_list[i].mode != 0 && mode_list[i].mode != c; i++); |
39 |
|
40 |
return mode_list[i].value; |
41 |
} |
42 |
|
43 |
/* yeah, this should be fun. */ |
44 |
/* If source == NULL, apply a mode change from outside to our structures |
45 |
* If source != NULL, apply the mode change and send it out from that user |
46 |
*/ |
47 |
void |
48 |
channel_mode (user_t *source, channel_t *chan, int parc, char const * const parv[]) |
49 |
{ |
50 |
bool matched = false; |
51 |
bool simple_modes_changed = false; |
52 |
int i, parpos = 0; |
53 |
mtype whatt = MTYPE_NUL; |
54 |
unsigned int newlimit; |
55 |
char const *pos = parv[0]; |
56 |
mychan_t *mc; |
57 |
chanuser_t *cu = NULL; |
58 |
user_t *first_deopped_service = NULL; |
59 |
node_t *n; |
60 |
|
61 |
if ((!pos) || (*pos == '\0')) |
62 |
return; |
63 |
|
64 |
if (!chan) |
65 |
return; |
66 |
|
67 |
/* SJOIN modes of 0 means no change */ |
68 |
if (*pos == '0') |
69 |
return; |
70 |
|
71 |
for (; *pos != '\0'; pos++) |
72 |
{ |
73 |
matched = false; |
74 |
|
75 |
if (*pos == '+') |
76 |
{ |
77 |
whatt = MTYPE_ADD; |
78 |
continue; |
79 |
} |
80 |
if (*pos == '-') |
81 |
{ |
82 |
whatt = MTYPE_DEL; |
83 |
continue; |
84 |
} |
85 |
|
86 |
for (i = 0; mode_list[i].mode != '\0'; i++) |
87 |
{ |
88 |
if (*pos == mode_list[i].mode) |
89 |
{ |
90 |
matched = true; |
91 |
|
92 |
if (whatt == MTYPE_ADD) |
93 |
{ |
94 |
if (!(chan->modes & mode_list[i].value)) |
95 |
simple_modes_changed = true; |
96 |
chan->modes |= mode_list[i].value; |
97 |
} |
98 |
else |
99 |
{ |
100 |
if (chan->modes & mode_list[i].value) |
101 |
simple_modes_changed = true; |
102 |
chan->modes &= ~mode_list[i].value; |
103 |
} |
104 |
|
105 |
if (source) |
106 |
modestack_mode_simple (source->nick, chan, whatt, mode_list[i].value); |
107 |
|
108 |
break; |
109 |
} |
110 |
} |
111 |
if (matched) |
112 |
continue; |
113 |
|
114 |
for (i = 0; ignore_mode_list[i].mode != '\0'; i++) |
115 |
{ |
116 |
if (*pos == ignore_mode_list[i].mode) |
117 |
{ |
118 |
matched = true; |
119 |
if (whatt == MTYPE_ADD) |
120 |
{ |
121 |
if (++parpos >= parc) |
122 |
break; |
123 |
if (source && !ignore_mode_list[i].check (parv[parpos], chan, NULL, NULL, NULL)) |
124 |
break; |
125 |
if (chan->extmodes[i]) |
126 |
{ |
127 |
if (strcmp (chan->extmodes[i], parv[parpos])) |
128 |
simple_modes_changed = true; |
129 |
sfree (chan->extmodes[i]); |
130 |
} |
131 |
else |
132 |
simple_modes_changed = true; |
133 |
chan->extmodes[i] = sstrdup (parv[parpos]); |
134 |
if (source) |
135 |
modestack_mode_ext (source->nick, chan, MTYPE_ADD, i, chan->extmodes[i]); |
136 |
} |
137 |
else |
138 |
{ |
139 |
if (chan->extmodes[i]) |
140 |
{ |
141 |
simple_modes_changed = true; |
142 |
sfree (chan->extmodes[i]); |
143 |
chan->extmodes[i] = NULL; |
144 |
} |
145 |
if (source) |
146 |
modestack_mode_ext (source->nick, chan, MTYPE_DEL, i, NULL); |
147 |
} |
148 |
break; |
149 |
} |
150 |
} |
151 |
if (matched) |
152 |
continue; |
153 |
|
154 |
if (*pos == 'l') |
155 |
{ |
156 |
if (whatt == MTYPE_ADD) |
157 |
{ |
158 |
if (++parpos >= parc) |
159 |
continue; |
160 |
chan->modes |= CMODE_LIMIT; |
161 |
newlimit = atoi (parv[parpos]); |
162 |
if (chan->limit != newlimit) |
163 |
simple_modes_changed = true; |
164 |
chan->limit = newlimit; |
165 |
if (source) |
166 |
modestack_mode_limit (source->nick, chan, MTYPE_ADD, chan->limit); |
167 |
} |
168 |
else |
169 |
{ |
170 |
chan->modes &= ~CMODE_LIMIT; |
171 |
if (chan->limit != 0) |
172 |
simple_modes_changed = true; |
173 |
chan->limit = 0; |
174 |
if (source) |
175 |
modestack_mode_limit (source->nick, chan, MTYPE_DEL, 0); |
176 |
} |
177 |
continue; |
178 |
} |
179 |
|
180 |
if (*pos == 'k') |
181 |
{ |
182 |
if (whatt == MTYPE_ADD) |
183 |
{ |
184 |
if (++parpos >= parc) |
185 |
continue; |
186 |
chan->modes |= CMODE_KEY; |
187 |
if (chan->key) |
188 |
{ |
189 |
if (strcmp (chan->key, parv[parpos])) |
190 |
simple_modes_changed = true; |
191 |
sfree (chan->key); |
192 |
} |
193 |
else |
194 |
simple_modes_changed = true; |
195 |
chan->key = sstrdup (parv[parpos]); |
196 |
if (source) |
197 |
modestack_mode_param (source->nick, chan, MTYPE_ADD, 'k', chan->key); |
198 |
} |
199 |
else |
200 |
{ |
201 |
if (chan->key) |
202 |
simple_modes_changed = true; |
203 |
chan->modes &= ~CMODE_KEY; |
204 |
if (source) |
205 |
modestack_mode_param (source->nick, chan, MTYPE_DEL, 'k', chan->key ? chan->key : "*"); |
206 |
sfree (chan->key); |
207 |
chan->key = NULL; |
208 |
/* ratbox typically sends either the key or a `*' on -k, so you |
209 |
* should eat a parameter |
210 |
*/ |
211 |
parpos++; |
212 |
} |
213 |
continue; |
214 |
} |
215 |
|
216 |
if (strchr (ircd->ban_like_modes, *pos)) |
217 |
{ |
218 |
if (++parpos >= parc) |
219 |
continue; |
220 |
if (whatt == MTYPE_ADD) |
221 |
{ |
222 |
chanban_add (chan, parv[parpos], *pos); |
223 |
if (source) |
224 |
modestack_mode_param (source->nick, chan, MTYPE_ADD, *pos, parv[parpos]); |
225 |
} |
226 |
else |
227 |
{ |
228 |
chanban_t *c; |
229 |
|
230 |
c = chanban_find (chan, parv[parpos], *pos); |
231 |
chanban_delete (c); |
232 |
if (source) |
233 |
modestack_mode_param (source->nick, chan, MTYPE_DEL, *pos, parv[parpos]); |
234 |
} |
235 |
continue; |
236 |
} |
237 |
|
238 |
for (i = 0; status_mode_list[i].mode != '\0'; i++) |
239 |
{ |
240 |
if (*pos == status_mode_list[i].mode) |
241 |
{ |
242 |
if (++parpos >= parc) |
243 |
break; |
244 |
cu = chanuser_find (chan, source ? user_find_named (parv[parpos]) : user_find (parv[parpos])); |
245 |
|
246 |
if (cu == NULL) |
247 |
{ |
248 |
slog (LG_ERROR, "channel_mode(): MODE %s %c%c %s", chan->name, (whatt == MTYPE_ADD) ? '+' : '-', status_mode_list[i].mode, parv[parpos]); |
249 |
break; |
250 |
} |
251 |
|
252 |
matched = true; |
253 |
|
254 |
if (whatt == MTYPE_ADD) |
255 |
{ |
256 |
cu->modes |= status_mode_list[i].value; |
257 |
|
258 |
if (source) |
259 |
modestack_mode_param (source->nick, chan, MTYPE_ADD, *pos, CLIENT_NAME (cu->user)); |
260 |
|
261 |
/* see if they did something we have to undo */ |
262 |
if (source == NULL && cu->user->server != me.me && chansvs.me != NULL && (mc = mychan_t::find (chan->name)) && mc->flags & MC_SECURE) |
263 |
{ |
264 |
if (status_mode_list[i].mode == 'o' && !(chanacs_user_flags (mc, cu->user) & (CA_OP | CA_AUTOOP))) |
265 |
{ |
266 |
/* they were opped and aren't on the list, deop them */ |
267 |
modestack_mode_param (chansvs.nick, chan, MTYPE_DEL, 'o', CLIENT_NAME (cu->user)); |
268 |
cu->modes &= ~status_mode_list[i].value; |
269 |
} |
270 |
else if (ircd->uses_halfops && status_mode_list[i].mode == ircd->halfops_mchar[1] && !(chanacs_user_flags (mc, cu->user) & (CA_HALFOP | CA_AUTOHALFOP))) |
271 |
{ |
272 |
/* same for halfops -- jilles */ |
273 |
modestack_mode_param (chansvs.nick, chan, MTYPE_DEL, ircd->halfops_mchar[1], CLIENT_NAME (cu->user)); |
274 |
cu->modes &= ~status_mode_list[i].value; |
275 |
} |
276 |
} |
277 |
} |
278 |
else |
279 |
{ |
280 |
if (cu->user->server == me.me && status_mode_list[i].value == CMODE_OP) |
281 |
{ |
282 |
if (source == NULL) |
283 |
{ |
284 |
if (first_deopped_service == NULL) |
285 |
{ |
286 |
if (chan->nummembers > 1) |
287 |
{ |
288 |
slog (LG_DEBUG, "channel_mode(): %s deopped on %s, rejoining", cu->user->nick, chan->name); |
289 |
phandler->part_sts (chan, cu->user); |
290 |
phandler->join_sts (chan, cu->user, false, channel_modes (chan, true)); |
291 |
} |
292 |
else |
293 |
{ |
294 |
slog (LG_DEBUG, "channel_mode(): %s deopped on %s, opping from other service", cu->user->nick, chan->name); |
295 |
LIST_FOREACH (n, me.me->userlist.head) |
296 |
{ |
297 |
if (n->data != cu->user) |
298 |
{ |
299 |
modestack_mode_param (((user_t *) n->data)->nick, chan, MTYPE_ADD, *pos, CLIENT_NAME (cu->user)); |
300 |
break; |
301 |
} |
302 |
} |
303 |
} |
304 |
first_deopped_service = cu->user; |
305 |
} |
306 |
else if (first_deopped_service != cu->user) |
307 |
{ |
308 |
slog (LG_DEBUG, "channel_mode(): %s deopped on %s, opping from %s", cu->user->nick, chan->name, first_deopped_service->nick); |
309 |
modestack_mode_param (first_deopped_service->nick, chan, MTYPE_ADD, *pos, CLIENT_NAME (cu->user)); |
310 |
} |
311 |
|
312 |
} |
313 |
|
314 |
continue; |
315 |
} |
316 |
|
317 |
if (source) |
318 |
modestack_mode_param (source->nick, chan, MTYPE_DEL, *pos, CLIENT_NAME (cu->user)); |
319 |
|
320 |
cu->modes &= ~status_mode_list[i].value; |
321 |
} |
322 |
|
323 |
break; |
324 |
} |
325 |
} |
326 |
if (matched) |
327 |
continue; |
328 |
|
329 |
slog (LG_DEBUG, "channel_mode(): mode %c not matched", *pos); |
330 |
} |
331 |
|
332 |
if (source == NULL && chansvs.me != NULL) |
333 |
{ |
334 |
mc = mychan_t::find (chan->name); |
335 |
if (mc != NULL && (simple_modes_changed || (mc->flags & MC_MLOCK_CHECK))) |
336 |
check_modes (mc, true); |
337 |
} |
338 |
} |
339 |
|
340 |
void |
341 |
channel_mode (user_t *source, channel_t *chan, char const * const arg) |
342 |
{ |
343 |
char const * const parv[] = { arg }; |
344 |
channel_mode (source, chan, 1, parv); |
345 |
} |
346 |
|
347 |
/* like channel_mode() but parv array passed as varargs */ |
348 |
void |
349 |
channel_mode_va (user_t *source, channel_t *chan, int parc, char const * const parv0, ...) |
350 |
{ |
351 |
char const *parv[255]; |
352 |
int i; |
353 |
va_list va; |
354 |
|
355 |
if (parc == 0) |
356 |
return; |
357 |
#if 0 |
358 |
if (parc > sizeof parv / sizeof *parv) |
359 |
{ |
360 |
slog (LG_DEBUG, "channel_mode_va(): parc too big (%d), truncating", parc); |
361 |
parc = sizeof parv / sizeof *parv; |
362 |
} |
363 |
#endif |
364 |
parv[0] = parv0; |
365 |
va_start (va, parv0); |
366 |
for (i = 1; i < parc; i++) |
367 |
parv[i] = va_arg (va, char *); |
368 |
va_end (va); |
369 |
channel_mode (source, chan, parc, parv); |
370 |
} |
371 |
|
372 |
static struct modestackdata |
373 |
{ |
374 |
char source[HOSTLEN]; /* name */ |
375 |
channel_t *channel; |
376 |
int modes_on; |
377 |
int modes_off; |
378 |
unsigned int limit; |
379 |
char extmodes[MAXEXTMODES][512]; |
380 |
bool limitused, extmodesused[MAXEXTMODES]; |
381 |
char pmodes[2 * MAXMODES + 2]; |
382 |
char params[512]; /* includes leading space */ |
383 |
int totalparamslen; /* includes leading space */ |
384 |
int totallen; |
385 |
int paramcount; |
386 |
|
387 |
unsigned int event; |
388 |
} modestackdata; |
389 |
|
390 |
static void modestack_calclen (struct modestackdata *md); |
391 |
|
392 |
static void |
393 |
modestack_debugprint (struct modestackdata *md) |
394 |
{ |
395 |
int i; |
396 |
|
397 |
slog (LG_DEBUG, "modestack_debugprint(): %s MODE %s", md->source, md->channel->name); |
398 |
slog (LG_DEBUG, "simple %x/%x", md->modes_on, md->modes_off); |
399 |
if (md->limitused) |
400 |
slog (LG_DEBUG, "limit %u", (unsigned) md->limit); |
401 |
for (i = 0; i < MAXEXTMODES; i++) |
402 |
if (md->extmodesused[i]) |
403 |
slog (LG_DEBUG, "ext %d %s", i, md->extmodes[i]); |
404 |
slog (LG_DEBUG, "pmodes %s%s", md->pmodes, md->params); |
405 |
modestack_calclen (md); |
406 |
slog (LG_DEBUG, "totallen %d/%d", md->totalparamslen, md->totallen); |
407 |
} |
408 |
|
409 |
/* calculates the length fields */ |
410 |
static void |
411 |
modestack_calclen (struct modestackdata *md) |
412 |
{ |
413 |
int i; |
414 |
char const *p; |
415 |
|
416 |
md->totallen = strlen (md->source) + USERLEN + HOSTLEN + 1 + 4 + 1 + 10 + strlen (md->channel->name) + 1; |
417 |
md->totallen += 2 + 32 + strlen (md->pmodes); |
418 |
md->totalparamslen = 0; |
419 |
md->paramcount = (md->limitused != 0); |
420 |
if (md->limitused && md->limit != 0) |
421 |
md->totalparamslen += 11; |
422 |
for (i = 0; i < MAXEXTMODES; i++) |
423 |
if (md->extmodesused[i]) |
424 |
{ |
425 |
md->paramcount++; |
426 |
if (*md->extmodes[i] != '\0') |
427 |
md->totalparamslen += 1 + strlen (md->extmodes[i]); |
428 |
} |
429 |
md->totalparamslen += strlen (md->params); |
430 |
p = md->params; |
431 |
while (*p != '\0') |
432 |
if (*p++ == ' ') |
433 |
md->paramcount++; |
434 |
md->totallen += md->totalparamslen; |
435 |
} |
436 |
|
437 |
/* clears the data */ |
438 |
static void |
439 |
modestack_clear (struct modestackdata *md) |
440 |
{ |
441 |
int i; |
442 |
|
443 |
md->modes_on = 0; |
444 |
md->modes_off = 0; |
445 |
md->limitused = 0; |
446 |
for (i = 0; i < MAXEXTMODES; i++) |
447 |
md->extmodesused[i] = 0, *md->extmodes[i] = '\0'; |
448 |
md->pmodes[0] = '\0'; |
449 |
md->params[0] = '\0'; |
450 |
md->totallen = 0; |
451 |
md->totalparamslen = 0; |
452 |
md->paramcount = 0; |
453 |
} |
454 |
|
455 |
/* sends a MODE and clears the data */ |
456 |
static void |
457 |
modestack_flush (struct modestackdata *md) |
458 |
{ |
459 |
char buf[512]; |
460 |
char *end, *p; |
461 |
mtype dir = MTYPE_NUL; |
462 |
int i; |
463 |
|
464 |
p = buf; |
465 |
end = buf + sizeof buf; |
466 |
|
467 |
/* first do the mode letters */ |
468 |
if (md->modes_off) |
469 |
{ |
470 |
if (dir != MTYPE_DEL) |
471 |
dir = MTYPE_DEL, *p++ = '-'; |
472 |
strlcpy (p, flags_to_string (md->modes_off), end - p); |
473 |
p += strlen (p); |
474 |
} |
475 |
if (md->limitused && md->limit == 0) |
476 |
{ |
477 |
if (dir != MTYPE_DEL) |
478 |
dir = MTYPE_DEL, *p++ = '-'; |
479 |
*p++ = 'l'; |
480 |
} |
481 |
for (i = 0; i < MAXEXTMODES; i++) |
482 |
{ |
483 |
if (md->extmodesused[i] && *md->extmodes[i] == '\0') |
484 |
{ |
485 |
if (dir != MTYPE_DEL) |
486 |
dir = MTYPE_DEL, *p++ = '-'; |
487 |
*p++ = ignore_mode_list[i].mode; |
488 |
} |
489 |
} |
490 |
if (md->modes_on) |
491 |
{ |
492 |
if (dir != MTYPE_ADD) |
493 |
dir = MTYPE_ADD, *p++ = '+'; |
494 |
strlcpy (p, flags_to_string (md->modes_on), end - p); |
495 |
p += strlen (p); |
496 |
} |
497 |
if (md->limitused && md->limit != 0) |
498 |
{ |
499 |
if (dir != MTYPE_ADD) |
500 |
dir = MTYPE_ADD, *p++ = '+'; |
501 |
*p++ = 'l'; |
502 |
} |
503 |
for (i = 0; i < MAXEXTMODES; i++) |
504 |
{ |
505 |
if (md->extmodesused[i] && *md->extmodes[i] != '\0') |
506 |
{ |
507 |
if (dir != MTYPE_ADD) |
508 |
dir = MTYPE_ADD, *p++ = '+'; |
509 |
*p++ = ignore_mode_list[i].mode; |
510 |
} |
511 |
} |
512 |
strlcpy (p, md->pmodes + ((dir == MTYPE_ADD && *md->pmodes == '+') || (dir == MTYPE_DEL && *md->pmodes == '-') ? 1 : 0), end - p); |
513 |
p += strlen (p); |
514 |
|
515 |
/* all mode letters done, now for some checks */ |
516 |
if (p == buf) |
517 |
{ |
518 |
/*slog(LG_DEBUG, "modestack_flush(): nothing to do"); */ |
519 |
return; |
520 |
} |
521 |
if (p + md->totalparamslen >= end) |
522 |
{ |
523 |
slog (LG_ERROR, "modestack_flush() overflow: %s", buf); |
524 |
modestack_debugprint (md); |
525 |
modestack_clear (md); |
526 |
return; |
527 |
} |
528 |
|
529 |
/* now the parameters, in the same order */ |
530 |
if (md->limitused && md->limit != 0) |
531 |
{ |
532 |
snprintf (p, end - p, " %u", (unsigned) md->limit); |
533 |
p += strlen (p); |
534 |
} |
535 |
for (i = 0; i < MAXEXTMODES; i++) |
536 |
{ |
537 |
if (md->extmodesused[i] && *md->extmodes[i] != '\0') |
538 |
{ |
539 |
snprintf (p, end - p, " %s", md->extmodes[i]); |
540 |
p += strlen (p); |
541 |
} |
542 |
} |
543 |
if (*md->params) |
544 |
{ |
545 |
strlcpy (p, md->params, end - p); |
546 |
p += strlen (p); |
547 |
} |
548 |
phandler->mode_sts (md->source, md->channel, buf); |
549 |
modestack_clear (md); |
550 |
} |
551 |
|
552 |
static struct modestackdata * |
553 |
modestack_init (char *source, channel_t *channel) |
554 |
{ |
555 |
if (irccasecmp (source, modestackdata.source) || channel != modestackdata.channel) |
556 |
{ |
557 |
/*slog(LG_DEBUG, "modestack_init(): new source/channel, flushing"); */ |
558 |
modestack_flush (&modestackdata); |
559 |
} |
560 |
strlcpy (modestackdata.source, source, sizeof modestackdata.source); |
561 |
modestackdata.channel = channel; |
562 |
return &modestackdata; |
563 |
} |
564 |
|
565 |
static void |
566 |
modestack_add_simple (struct modestackdata *md, mtype dir, int flags) |
567 |
{ |
568 |
if (dir == MTYPE_ADD) |
569 |
md->modes_on |= flags, md->modes_off &= ~flags; |
570 |
else if (dir == MTYPE_DEL) |
571 |
md->modes_off |= flags, md->modes_on &= ~flags; |
572 |
else |
573 |
slog (LG_ERROR, "modestack_add_simple(): invalid direction"); |
574 |
} |
575 |
|
576 |
static void |
577 |
modestack_add_limit (struct modestackdata *md, mtype dir, unsigned int limit) |
578 |
{ |
579 |
md->limitused = 0; |
580 |
modestack_calclen (md); |
581 |
if (md->paramcount >= MAXMODES) |
582 |
modestack_flush (md); |
583 |
if (dir == MTYPE_ADD) |
584 |
{ |
585 |
if (md->totallen + 11 > 512) |
586 |
modestack_flush (md); |
587 |
md->limit = limit; |
588 |
} |
589 |
else if (dir == MTYPE_DEL) |
590 |
md->limit = 0; |
591 |
else |
592 |
slog (LG_ERROR, "modestack_add_limit(): invalid direction"); |
593 |
md->limitused = 1; |
594 |
} |
595 |
|
596 |
static void |
597 |
modestack_add_ext (struct modestackdata *md, mtype dir, int i, char const * const value) |
598 |
{ |
599 |
md->extmodesused[i] = 0; |
600 |
modestack_calclen (md); |
601 |
if (md->paramcount >= MAXMODES) |
602 |
modestack_flush (md); |
603 |
if (dir == MTYPE_ADD) |
604 |
{ |
605 |
if (md->totallen + 1 + strlen (value) > 512) |
606 |
modestack_flush (md); |
607 |
strlcpy (md->extmodes[i], value, sizeof md->extmodes[i]); |
608 |
} |
609 |
else if (dir == MTYPE_DEL) |
610 |
md->extmodes[i][0] = '\0'; |
611 |
else |
612 |
slog (LG_ERROR, "modestack_add_ext(): invalid direction"); |
613 |
md->extmodesused[i] = 1; |
614 |
} |
615 |
|
616 |
static void |
617 |
modestack_add_param (struct modestackdata *md, mtype dir, char type, char const * const value) |
618 |
{ |
619 |
char *p; |
620 |
int n = 0, i; |
621 |
char dir2 = MTYPE_NUL; |
622 |
char str[3]; |
623 |
|
624 |
p = md->pmodes; |
625 |
while (*p != '\0') |
626 |
{ |
627 |
if (*p == '+') |
628 |
dir2 = MTYPE_ADD; |
629 |
else if (*p == '-') |
630 |
dir2 = MTYPE_DEL; |
631 |
else |
632 |
n++; |
633 |
p++; |
634 |
} |
635 |
n += (md->limitused != 0); |
636 |
for (i = 0; i < MAXEXTMODES; i++) |
637 |
n += (md->extmodesused[i] != 0); |
638 |
modestack_calclen (md); |
639 |
if (n >= MAXMODES || md->totallen + (dir != dir2) + 2 + strlen (value) > 512 || (type == 'k' && strchr (md->pmodes, 'k'))) |
640 |
{ |
641 |
modestack_flush (md); |
642 |
dir2 = MTYPE_NUL; |
643 |
} |
644 |
if (dir != dir2) |
645 |
{ |
646 |
str[0] = dir == MTYPE_ADD ? '+' : '-'; |
647 |
str[1] = type; |
648 |
str[2] = '\0'; |
649 |
} |
650 |
else |
651 |
{ |
652 |
str[0] = type; |
653 |
str[1] = '\0'; |
654 |
} |
655 |
strlcat (md->pmodes, str, sizeof md->pmodes); |
656 |
strlcat (md->params, " ", sizeof md->params); |
657 |
strlcat (md->params, value, sizeof md->params); |
658 |
} |
659 |
|
660 |
static void |
661 |
modestack_flush_callback (void *arg) |
662 |
{ |
663 |
modestack_flush ((struct modestackdata *) arg); |
664 |
((struct modestackdata *) arg)->event = 0; |
665 |
} |
666 |
|
667 |
/* flush pending modes for a certain channel */ |
668 |
void |
669 |
modestack_flush_channel (channel_t *channel) |
670 |
{ |
671 |
if (channel == NULL || channel == modestackdata.channel) |
672 |
modestack_flush (&modestackdata); |
673 |
} |
674 |
|
675 |
/* forget pending modes for a certain channel */ |
676 |
void |
677 |
modestack_forget_channel (channel_t *channel) |
678 |
{ |
679 |
if (channel == NULL || channel == modestackdata.channel) |
680 |
modestack_clear (&modestackdata); |
681 |
} |
682 |
|
683 |
/* handle a channel that is going to be destroyed */ |
684 |
void |
685 |
modestack_finalize_channel (channel_t *channel) |
686 |
{ |
687 |
user_t *u; |
688 |
|
689 |
if (channel == modestackdata.channel) |
690 |
{ |
691 |
if (modestackdata.modes_off & ircd->perm_mode) |
692 |
{ |
693 |
/* A mode change is not a good way to destroy a channel */ |
694 |
slog (LG_DEBUG, "modestack_finalize_channel(): flushing modes for %s to clear perm mode", channel->name); |
695 |
u = user_find_named (modestackdata.source); |
696 |
if (u != NULL) |
697 |
phandler->join_sts (channel, u, false, channel_modes (channel, true)); |
698 |
modestack_flush (&modestackdata); |
699 |
if (u != NULL) |
700 |
phandler->part_sts (channel, u); |
701 |
} |
702 |
else |
703 |
modestack_clear (&modestackdata); |
704 |
} |
705 |
} |
706 |
|
707 |
/* stack simple modes without parameters */ |
708 |
void |
709 |
modestack_mode_simple (char *source, channel_t *channel, mtype dir, int flags) |
710 |
{ |
711 |
struct modestackdata *md; |
712 |
|
713 |
if (flags == 0) |
714 |
return; |
715 |
md = modestack_init (source, channel); |
716 |
modestack_add_simple (md, dir, flags); |
717 |
if (!md->event) |
718 |
md->event = event_add_once ("flush_cmode_callback", modestack_flush_callback, md, 0); |
719 |
} |
720 |
|
721 |
/* stack a limit */ |
722 |
void |
723 |
modestack_mode_limit (char *source, channel_t *channel, mtype dir, unsigned int limit) |
724 |
{ |
725 |
struct modestackdata *md; |
726 |
|
727 |
md = modestack_init (source, channel); |
728 |
modestack_add_limit (md, dir, limit); |
729 |
if (!md->event) |
730 |
md->event = event_add_once ("flush_cmode_callback", modestack_flush_callback, md, 0); |
731 |
} |
732 |
|
733 |
/* stack a non-standard type C mode */ |
734 |
void |
735 |
modestack_mode_ext (char *source, channel_t *channel, mtype dir, int i, char const * const value) |
736 |
{ |
737 |
struct modestackdata *md; |
738 |
|
739 |
md = modestack_init (source, channel); |
740 |
if (i < 0 || i >= MAXEXTMODES) |
741 |
{ |
742 |
slog (LG_ERROR, "modestack_mode_ext(): i=%d out of range (value=\"%s\")", i, value); |
743 |
return; |
744 |
} |
745 |
modestack_add_ext (md, dir, i, value); |
746 |
if (!md->event) |
747 |
md->event = event_add_once ("flush_cmode_callback", modestack_flush_callback, md, 0); |
748 |
} |
749 |
|
750 |
/* stack a type A, B or E mode */ |
751 |
void |
752 |
modestack_mode_param (char *source, channel_t *channel, mtype dir, char type, char const * const value) |
753 |
{ |
754 |
struct modestackdata *md; |
755 |
|
756 |
md = modestack_init (source, channel); |
757 |
modestack_add_param (md, dir, type, value); |
758 |
if (!md->event) |
759 |
md->event = event_add_once ("flush_cmode_callback", modestack_flush_callback, md, 0); |
760 |
} |
761 |
|
762 |
/* Clear all simple modes (+imnpstkl etc) on a channel */ |
763 |
void |
764 |
clear_simple_modes (channel_t *c) |
765 |
{ |
766 |
int i; |
767 |
|
768 |
if (c == NULL) |
769 |
return; |
770 |
c->modes = 0; |
771 |
c->limit = 0; |
772 |
if (c->key != NULL) |
773 |
sfree (c->key); |
774 |
c->key = NULL; |
775 |
for (i = 0; i < MAXEXTMODES; i++) |
776 |
if (c->extmodes[i] != NULL) |
777 |
{ |
778 |
sfree (c->extmodes[i]); |
779 |
c->extmodes[i] = NULL; |
780 |
} |
781 |
} |
782 |
|
783 |
char * |
784 |
channel_modes (channel_t *c, bool doparams) |
785 |
{ |
786 |
static char fullmode[512]; |
787 |
char params[512]; |
788 |
int i; |
789 |
char *p; |
790 |
char *q; |
791 |
|
792 |
if (c == NULL) |
793 |
return NULL; |
794 |
|
795 |
p = fullmode; |
796 |
q = params; |
797 |
*p++ = '+'; |
798 |
*q = '\0'; |
799 |
for (i = 0; mode_list[i].mode != '\0'; i++) |
800 |
{ |
801 |
if (c->modes & mode_list[i].value) |
802 |
*p++ = mode_list[i].mode; |
803 |
} |
804 |
if (c->limit) |
805 |
{ |
806 |
*p++ = 'l'; |
807 |
if (doparams) |
808 |
{ |
809 |
snprintf (q, params + sizeof params - q, " %d", c->limit); |
810 |
q += strlen (q); |
811 |
} |
812 |
} |
813 |
if (c->key) |
814 |
{ |
815 |
*p++ = 'k'; |
816 |
if (doparams) |
817 |
{ |
818 |
*q++ = ' '; |
819 |
strlcpy (q, c->key, params + sizeof params - q); |
820 |
q += strlen (q); |
821 |
} |
822 |
} |
823 |
for (i = 0; ignore_mode_list[i].mode != '\0'; i++) |
824 |
{ |
825 |
if (c->extmodes[i] != NULL) |
826 |
{ |
827 |
*p++ = ignore_mode_list[i].mode; |
828 |
if (doparams) |
829 |
{ |
830 |
*q++ = ' '; |
831 |
strlcpy (q, c->extmodes[i], params + sizeof params - q); |
832 |
q += strlen (q); |
833 |
} |
834 |
} |
835 |
} |
836 |
strlcpy (p, params, fullmode + sizeof fullmode - p); |
837 |
return fullmode; |
838 |
} |
839 |
|
840 |
void |
841 |
check_modes (mychan_t *mychan, bool sendnow) |
842 |
{ |
843 |
int modes; |
844 |
int i; |
845 |
metadata *md; |
846 |
char *p, *q; |
847 |
char str2[512]; |
848 |
|
849 |
if (!mychan || !mychan->chan) |
850 |
return; |
851 |
mychan->flags &= ~MC_MLOCK_CHECK; |
852 |
|
853 |
/* check what's locked on */ |
854 |
modes = ~mychan->chan->modes & mychan->mlock_on; |
855 |
modes &= ~(CMODE_KEY | CMODE_LIMIT); |
856 |
if (sendnow) |
857 |
modestack_mode_simple (chansvs.nick, mychan->chan, MTYPE_ADD, modes); |
858 |
mychan->chan->modes |= modes; |
859 |
|
860 |
if (mychan->mlock_limit && mychan->mlock_limit != mychan->chan->limit) |
861 |
{ |
862 |
mychan->chan->limit = mychan->mlock_limit; |
863 |
if (sendnow) |
864 |
modestack_mode_limit (chansvs.nick, mychan->chan, MTYPE_ADD, mychan->mlock_limit); |
865 |
} |
866 |
|
867 |
if (mychan->mlock_key) |
868 |
{ |
869 |
if (mychan->chan->key && strcmp (mychan->chan->key, mychan->mlock_key)) |
870 |
{ |
871 |
/* some ircds still need this... :\ -- jilles */ |
872 |
if (sendnow) |
873 |
modestack_mode_param (chansvs.nick, mychan->chan, MTYPE_DEL, 'k', mychan->chan->key); |
874 |
sfree (mychan->chan->key); |
875 |
mychan->chan->key = NULL; |
876 |
} |
877 |
|
878 |
if (mychan->chan->key == NULL) |
879 |
{ |
880 |
mychan->chan->key = sstrdup (mychan->mlock_key); |
881 |
if (sendnow) |
882 |
modestack_mode_param (chansvs.nick, mychan->chan, MTYPE_ADD, 'k', mychan->mlock_key); |
883 |
} |
884 |
} |
885 |
|
886 |
/* check what's locked off */ |
887 |
modes = mychan->chan->modes & mychan->mlock_off; |
888 |
modes &= ~(CMODE_KEY | CMODE_LIMIT); |
889 |
if (sendnow) |
890 |
modestack_mode_simple (chansvs.nick, mychan->chan, MTYPE_DEL, modes); |
891 |
mychan->chan->modes &= ~modes; |
892 |
|
893 |
if (mychan->chan->limit && (mychan->mlock_off & CMODE_LIMIT)) |
894 |
{ |
895 |
if (sendnow) |
896 |
modestack_mode_limit (chansvs.nick, mychan->chan, MTYPE_DEL, 0); |
897 |
mychan->chan->limit = 0; |
898 |
} |
899 |
|
900 |
if (mychan->chan->key && (mychan->mlock_off & CMODE_KEY)) |
901 |
{ |
902 |
if (sendnow) |
903 |
modestack_mode_param (chansvs.nick, mychan->chan, MTYPE_DEL, 'k', mychan->chan->key); |
904 |
sfree (mychan->chan->key); |
905 |
mychan->chan->key = NULL; |
906 |
} |
907 |
|
908 |
/* non-standard type C modes separately */ |
909 |
md = mychan->find_metadata ("private:mlockext"); |
910 |
if (md != NULL) |
911 |
{ |
912 |
p = md->value; |
913 |
while (*p != '\0') |
914 |
{ |
915 |
for (i = 0; ignore_mode_list[i].mode != '\0'; i++) |
916 |
{ |
917 |
if (ignore_mode_list[i].mode == *p) |
918 |
{ |
919 |
if ((p[1] == ' ' || p[1] == '\0') && mychan->chan->extmodes[i] != NULL) |
920 |
{ |
921 |
sfree (mychan->chan->extmodes[i]); |
922 |
mychan->chan->extmodes[i] = NULL; |
923 |
if (sendnow) |
924 |
modestack_mode_ext (chansvs.nick, mychan->chan, MTYPE_DEL, i, NULL); |
925 |
} |
926 |
else if (p[1] != ' ' && p[1] != '\0') |
927 |
{ |
928 |
strlcpy (str2, p + 1, sizeof str2); |
929 |
q = strchr (str2, ' '); |
930 |
if (q != NULL) |
931 |
*q = '\0'; |
932 |
if ((mychan->chan->extmodes[i] == NULL || strcmp (mychan->chan->extmodes[i], str2)) && ignore_mode_list[i].check (str2, mychan->chan, mychan, NULL, NULL)) |
933 |
{ |
934 |
if (mychan->chan->extmodes[i] != NULL) |
935 |
sfree (mychan->chan->extmodes[i]); |
936 |
mychan->chan->extmodes[i] = sstrdup (str2); |
937 |
if (sendnow) |
938 |
modestack_mode_ext (chansvs.nick, mychan->chan, MTYPE_ADD, i, mychan->chan->extmodes[i]); |
939 |
} |
940 |
} |
941 |
} |
942 |
} |
943 |
while (*p != ' ' && *p != '\0') |
944 |
p++; |
945 |
while (*p == ' ') |
946 |
p++; |
947 |
} |
948 |
} |
949 |
|
950 |
} |
951 |
|
952 |
/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs |
953 |
* vim:ts=8 |
954 |
* vim:sw=8 |
955 |
* vim:noexpandtab |
956 |
*/ |