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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_mode.c: Sets a user or channel mode. | |
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 | * | |
24 | * $Id: m_mode.c 1006 2006-03-09 15:32:14Z nenolod $ | |
25 | */ | |
26 | ||
27 | #include "stdinc.h" | |
28 | #include "channel.h" | |
29 | #include "client.h" | |
30 | #include "hash.h" | |
31 | #include "match.h" | |
32 | #include "ircd.h" | |
33 | #include "numeric.h" | |
34 | #include "s_user.h" | |
35 | #include "s_conf.h" | |
36 | #include "s_serv.h" | |
37 | #include "logger.h" | |
38 | #include "send.h" | |
39 | #include "msg.h" | |
40 | #include "parse.h" | |
41 | #include "modules.h" | |
42 | #include "packet.h" | |
43 | #include "s_newconf.h" | |
44 | ||
45 | static int m_mode(struct Client *, struct Client *, int, const char **); | |
46 | static int ms_mode(struct Client *, struct Client *, int, const char **); | |
47 | static int ms_tmode(struct Client *, struct Client *, int, const char **); | |
48 | static int ms_mlock(struct Client *, struct Client *, int, const char **); | |
49 | static int ms_bmask(struct Client *, struct Client *, int, const char **); | |
50 | ||
51 | struct Message mode_msgtab = { | |
52 | "MODE", 0, 0, 0, MFLG_SLOW, | |
53 | {mg_unreg, {m_mode, 2}, {m_mode, 3}, {ms_mode, 3}, mg_ignore, {m_mode, 2}} | |
54 | }; | |
55 | struct Message tmode_msgtab = { | |
56 | "TMODE", 0, 0, 0, MFLG_SLOW, | |
57 | {mg_ignore, mg_ignore, {ms_tmode, 4}, {ms_tmode, 4}, mg_ignore, mg_ignore} | |
58 | }; | |
59 | struct Message mlock_msgtab = { | |
60 | "MLOCK", 0, 0, 0, MFLG_SLOW, | |
61 | {mg_ignore, mg_ignore, {ms_mlock, 3}, {ms_mlock, 3}, mg_ignore, mg_ignore} | |
62 | }; | |
63 | struct Message bmask_msgtab = { | |
64 | "BMASK", 0, 0, 0, MFLG_SLOW, | |
65 | {mg_ignore, mg_ignore, mg_ignore, {ms_bmask, 5}, mg_ignore, mg_ignore} | |
66 | }; | |
67 | ||
68 | mapi_clist_av1 mode_clist[] = { &mode_msgtab, &tmode_msgtab, &mlock_msgtab, &bmask_msgtab, NULL }; | |
69 | ||
70 | DECLARE_MODULE_AV1(mode, NULL, NULL, mode_clist, NULL, NULL, "$Revision: 1006 $"); | |
71 | ||
72 | /* | |
73 | * m_mode - MODE command handler | |
74 | * parv[1] - channel | |
75 | */ | |
76 | static int | |
77 | m_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
78 | { | |
79 | struct Channel *chptr = NULL; | |
80 | struct membership *msptr; | |
81 | int n = 2; | |
82 | const char *dest; | |
83 | int operspy = 0; | |
84 | ||
85 | dest = parv[1]; | |
86 | ||
87 | if(IsOperSpy(source_p) && *dest == '!') | |
88 | { | |
89 | dest++; | |
90 | operspy = 1; | |
91 | ||
92 | if(EmptyString(dest)) | |
93 | { | |
94 | sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), | |
95 | me.name, source_p->name, "MODE"); | |
96 | return 0; | |
97 | } | |
98 | } | |
99 | ||
100 | /* Now, try to find the channel in question */ | |
101 | if(!IsChanPrefix(*dest)) | |
102 | { | |
103 | /* if here, it has to be a non-channel name */ | |
104 | user_mode(client_p, source_p, parc, parv); | |
105 | return 0; | |
106 | } | |
107 | ||
108 | if(!check_channel_name(dest)) | |
109 | { | |
110 | sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[1]); | |
111 | return 0; | |
112 | } | |
113 | ||
114 | chptr = find_channel(dest); | |
115 | ||
116 | if(chptr == NULL) | |
117 | { | |
118 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, | |
119 | form_str(ERR_NOSUCHCHANNEL), parv[1]); | |
120 | return 0; | |
121 | } | |
122 | ||
123 | /* Now know the channel exists */ | |
124 | if(parc < n + 1) | |
125 | { | |
126 | if(operspy) | |
127 | report_operspy(source_p, "MODE", chptr->chname); | |
128 | ||
129 | sendto_one(source_p, form_str(RPL_CHANNELMODEIS), | |
130 | me.name, source_p->name, parv[1], | |
131 | operspy ? channel_modes(chptr, &me) : channel_modes(chptr, source_p)); | |
132 | ||
133 | sendto_one(source_p, form_str(RPL_CREATIONTIME), | |
134 | me.name, source_p->name, parv[1], chptr->channelts); | |
135 | } | |
136 | else | |
137 | { | |
138 | msptr = find_channel_membership(chptr, source_p); | |
139 | ||
140 | /* Finish the flood grace period... */ | |
141 | if(MyClient(source_p) && !IsFloodDone(source_p)) | |
142 | { | |
143 | if(!((parc == 3) && (parv[2][0] == 'b') && (parv[2][1] == '\0'))) | |
144 | flood_endgrace(source_p); | |
145 | } | |
146 | ||
147 | set_channel_mode(client_p, source_p, chptr, msptr, parc - n, parv + n); | |
148 | } | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | static int | |
154 | ms_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
155 | { | |
156 | struct Channel *chptr; | |
157 | ||
158 | chptr = find_channel(parv[1]); | |
159 | ||
160 | if(chptr == NULL) | |
161 | { | |
162 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, | |
163 | form_str(ERR_NOSUCHCHANNEL), parv[1]); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | set_channel_mode(client_p, source_p, chptr, NULL, parc - 2, parv + 2); | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
172 | static int | |
173 | ms_tmode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
174 | { | |
175 | struct Channel *chptr = NULL; | |
176 | struct membership *msptr; | |
177 | ||
178 | /* Now, try to find the channel in question */ | |
179 | if(!IsChanPrefix(parv[2][0]) || !check_channel_name(parv[2])) | |
180 | { | |
181 | sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[2]); | |
182 | return 0; | |
183 | } | |
184 | ||
185 | chptr = find_channel(parv[2]); | |
186 | ||
187 | if(chptr == NULL) | |
188 | { | |
189 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, | |
190 | form_str(ERR_NOSUCHCHANNEL), parv[2]); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /* TS is higher, drop it. */ | |
195 | if(atol(parv[1]) > chptr->channelts) | |
196 | return 0; | |
197 | ||
198 | if(IsServer(source_p)) | |
199 | { | |
200 | set_channel_mode(client_p, source_p, chptr, NULL, parc - 3, parv + 3); | |
201 | } | |
202 | else | |
203 | { | |
204 | msptr = find_channel_membership(chptr, source_p); | |
205 | ||
206 | set_channel_mode(client_p, source_p, chptr, msptr, parc - 3, parv + 3); | |
207 | } | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
212 | static int | |
213 | ms_mlock(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
214 | { | |
215 | struct Channel *chptr = NULL; | |
216 | ||
217 | /* Now, try to find the channel in question */ | |
218 | if(!IsChanPrefix(parv[2][0]) || !check_channel_name(parv[2])) | |
219 | { | |
220 | sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[2]); | |
221 | return 0; | |
222 | } | |
223 | ||
224 | chptr = find_channel(parv[2]); | |
225 | ||
226 | if(chptr == NULL) | |
227 | { | |
228 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, | |
229 | form_str(ERR_NOSUCHCHANNEL), parv[2]); | |
230 | return 0; | |
231 | } | |
232 | ||
233 | /* TS is higher, drop it. */ | |
234 | if(atol(parv[1]) > chptr->channelts) | |
235 | return 0; | |
236 | ||
237 | if(IsServer(source_p)) | |
238 | set_channel_mlock(client_p, source_p, chptr, parv[3], TRUE); | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
243 | static void | |
244 | possibly_remove_lower_forward(struct Client *fakesource_p, int mems, | |
245 | struct Channel *chptr, rb_dlink_list *banlist, int mchar, | |
246 | const char *mask, const char *forward) | |
247 | { | |
248 | struct Ban *actualBan; | |
249 | rb_dlink_node *ptr; | |
250 | ||
251 | RB_DLINK_FOREACH(ptr, banlist->head) | |
252 | { | |
253 | actualBan = ptr->data; | |
254 | if(!irccmp(actualBan->banstr, mask) && | |
255 | (actualBan->forward == NULL || | |
256 | irccmp(actualBan->forward, forward) < 0)) | |
257 | { | |
258 | sendto_channel_local(mems, chptr, ":%s MODE %s -%c %s%s%s", | |
259 | fakesource_p->name, | |
260 | chptr->chname, | |
261 | mchar, | |
262 | actualBan->banstr, | |
263 | actualBan->forward ? "$" : "", | |
264 | actualBan->forward ? actualBan->forward : ""); | |
265 | rb_dlinkDelete(&actualBan->node, banlist); | |
266 | free_ban(actualBan); | |
267 | return; | |
268 | } | |
269 | } | |
270 | } | |
271 | ||
272 | static int | |
273 | ms_bmask(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
274 | { | |
275 | static char modebuf[BUFSIZE]; | |
276 | static char parabuf[BUFSIZE]; | |
277 | struct Channel *chptr; | |
278 | rb_dlink_list *banlist; | |
279 | char *s, *forward; | |
280 | char *t; | |
281 | char *mbuf; | |
282 | char *pbuf; | |
283 | long mode_type; | |
284 | int mlen; | |
285 | int plen = 0; | |
286 | int tlen; | |
287 | int arglen; | |
288 | int modecount = 0; | |
289 | int needcap = NOCAPS; | |
290 | int mems; | |
291 | struct Client *fakesource_p; | |
292 | ||
293 | if(!IsChanPrefix(parv[2][0]) || !check_channel_name(parv[2])) | |
294 | return 0; | |
295 | ||
296 | if((chptr = find_channel(parv[2])) == NULL) | |
297 | return 0; | |
298 | ||
299 | /* TS is higher, drop it. */ | |
300 | if(atol(parv[1]) > chptr->channelts) | |
301 | return 0; | |
302 | ||
303 | switch (parv[3][0]) | |
304 | { | |
305 | case 'b': | |
306 | banlist = &chptr->banlist; | |
307 | mode_type = CHFL_BAN; | |
308 | mems = ALL_MEMBERS; | |
309 | break; | |
310 | ||
311 | case 'e': | |
312 | banlist = &chptr->exceptlist; | |
313 | mode_type = CHFL_EXCEPTION; | |
314 | needcap = CAP_EX; | |
315 | mems = ONLY_CHANOPS; | |
316 | break; | |
317 | ||
318 | case 'I': | |
319 | banlist = &chptr->invexlist; | |
320 | mode_type = CHFL_INVEX; | |
321 | needcap = CAP_IE; | |
322 | mems = ONLY_CHANOPS; | |
323 | break; | |
324 | ||
325 | case 'q': | |
326 | banlist = &chptr->quietlist; | |
327 | mode_type = CHFL_QUIET; | |
328 | mems = ALL_MEMBERS; | |
329 | break; | |
330 | ||
331 | /* maybe we should just blindly propagate this? */ | |
332 | default: | |
333 | return 0; | |
334 | } | |
335 | ||
336 | parabuf[0] = '\0'; | |
337 | s = LOCAL_COPY(parv[4]); | |
338 | ||
339 | /* Hide connecting server on netburst -- jilles */ | |
340 | if (ConfigServerHide.flatten_links && !HasSentEob(source_p)) | |
341 | fakesource_p = &me; | |
342 | else | |
343 | fakesource_p = source_p; | |
344 | mlen = rb_sprintf(modebuf, ":%s MODE %s +", fakesource_p->name, chptr->chname); | |
345 | mbuf = modebuf + mlen; | |
346 | pbuf = parabuf; | |
347 | ||
348 | while(*s == ' ') | |
349 | s++; | |
350 | ||
351 | /* next char isnt a space, point t to the next one */ | |
352 | if((t = strchr(s, ' ')) != NULL) | |
353 | { | |
354 | *t++ = '\0'; | |
355 | ||
356 | /* double spaces will break the parser */ | |
357 | while(*t == ' ') | |
358 | t++; | |
359 | } | |
360 | ||
361 | /* couldve skipped spaces and got nothing.. */ | |
362 | while(!EmptyString(s)) | |
363 | { | |
364 | /* ban with a leading ':' -- this will break the protocol */ | |
365 | if(*s == ':') | |
366 | goto nextban; | |
367 | ||
368 | tlen = strlen(s); | |
369 | ||
370 | /* I dont even want to begin parsing this.. */ | |
371 | if(tlen > MODEBUFLEN) | |
372 | break; | |
373 | ||
374 | if((forward = strchr(s+1, '$')) != NULL) | |
375 | { | |
376 | *forward++ = '\0'; | |
377 | if(*forward == '\0') | |
378 | tlen--, forward = NULL; | |
379 | possibly_remove_lower_forward(fakesource_p, mems, | |
380 | chptr, banlist, parv[3][0], s, forward); | |
381 | } | |
382 | ||
383 | if(add_id(fakesource_p, chptr, s, forward, banlist, mode_type)) | |
384 | { | |
385 | /* this new one wont fit.. */ | |
386 | if(mlen + MAXMODEPARAMS + plen + tlen > BUFSIZE - 5 || | |
387 | modecount >= MAXMODEPARAMS) | |
388 | { | |
389 | *mbuf = '\0'; | |
390 | *(pbuf - 1) = '\0'; | |
391 | sendto_channel_local(mems, chptr, "%s %s", modebuf, parabuf); | |
392 | ||
393 | mbuf = modebuf + mlen; | |
394 | pbuf = parabuf; | |
395 | plen = modecount = 0; | |
396 | } | |
397 | ||
398 | if (forward != NULL) | |
399 | forward[-1] = '$'; | |
400 | ||
401 | *mbuf++ = parv[3][0]; | |
402 | arglen = rb_sprintf(pbuf, "%s ", s); | |
403 | pbuf += arglen; | |
404 | plen += arglen; | |
405 | modecount++; | |
406 | } | |
407 | ||
408 | nextban: | |
409 | s = t; | |
410 | ||
411 | if(s != NULL) | |
412 | { | |
413 | if((t = strchr(s, ' ')) != NULL) | |
414 | { | |
415 | *t++ = '\0'; | |
416 | ||
417 | while(*t == ' ') | |
418 | t++; | |
419 | } | |
420 | } | |
421 | } | |
422 | ||
423 | if(modecount) | |
424 | { | |
425 | *mbuf = '\0'; | |
426 | *(pbuf - 1) = '\0'; | |
427 | sendto_channel_local(mems, chptr, "%s %s", modebuf, parabuf); | |
428 | } | |
429 | ||
430 | sendto_server(client_p, chptr, CAP_TS6 | needcap, NOCAPS, ":%s BMASK %ld %s %s :%s", | |
431 | source_p->id, (long) chptr->channelts, chptr->chname, parv[3], parv[4]); | |
432 | return 0; | |
433 | } | |
434 |