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1 | /* modules/m_xline.c | |
2 | * | |
3 | * Copyright (C) 2002-2003 Lee Hardy <lee@leeh.co.uk> | |
4 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are | |
8 | * met: | |
9 | * | |
10 | * 1.Redistributions of source code must retain the above copyright notice, | |
11 | * this list of conditions and the following disclaimer. | |
12 | * 2.Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3.The name of the author may not be used to endorse or promote products | |
16 | * derived from this software without specific prior written permission. | |
17 | * | |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
21 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
22 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
26 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
27 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
28 | * POSSIBILITY OF SUCH DAMAGE. | |
29 | * | |
30 | * $Id$ | |
31 | */ | |
32 | ||
33 | #include "stdinc.h" | |
34 | #include "send.h" | |
35 | #include "channel.h" | |
36 | #include "client.h" | |
37 | #include "common.h" | |
38 | #include "config.h" | |
39 | #include "class.h" | |
40 | #include "ircd.h" | |
41 | #include "numeric.h" | |
42 | #include "logger.h" | |
43 | #include "s_serv.h" | |
44 | #include "whowas.h" | |
45 | #include "match.h" | |
46 | #include "hash.h" | |
47 | #include "msg.h" | |
48 | #include "parse.h" | |
49 | #include "modules.h" | |
50 | #include "s_conf.h" | |
51 | #include "s_newconf.h" | |
52 | #include "reject.h" | |
53 | #include "bandbi.h" | |
54 | #include "operhash.h" | |
55 | ||
56 | static int mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
57 | static int ms_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
58 | static int me_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
59 | static int mo_unxline(struct Client *client_p, struct Client *source_p, int parc, | |
60 | const char *parv[]); | |
61 | static int ms_unxline(struct Client *client_p, struct Client *source_p, int parc, | |
62 | const char *parv[]); | |
63 | static int me_unxline(struct Client *client_p, struct Client *source_p, int parc, | |
64 | const char *parv[]); | |
65 | ||
66 | struct Message xline_msgtab = { | |
67 | "XLINE", 0, 0, 0, MFLG_SLOW, | |
68 | {mg_unreg, mg_not_oper, {ms_xline, 5}, {ms_xline, 5}, {me_xline, 5}, {mo_xline, 3}} | |
69 | }; | |
70 | ||
71 | struct Message unxline_msgtab = { | |
72 | "UNXLINE", 0, 0, 0, MFLG_SLOW, | |
73 | {mg_unreg, mg_not_oper, {ms_unxline, 3}, {ms_unxline, 3}, {me_unxline, 2}, {mo_unxline, 2}} | |
74 | }; | |
75 | ||
76 | mapi_clist_av1 xline_clist[] = { &xline_msgtab, &unxline_msgtab, NULL }; | |
77 | ||
78 | DECLARE_MODULE_AV1(xline, NULL, NULL, xline_clist, NULL, NULL, "$Revision$"); | |
79 | ||
80 | static int valid_xline(struct Client *, const char *, const char *); | |
81 | static void apply_xline(struct Client *client_p, const char *name, | |
82 | const char *reason, int temp_time, int propagated); | |
83 | static void propagate_xline(struct Client *source_p, const char *target, | |
84 | int temp_time, const char *name, const char *type, const char *reason); | |
85 | static void cluster_xline(struct Client *source_p, int temp_time, | |
86 | const char *name, const char *reason); | |
87 | ||
88 | static void handle_remote_xline(struct Client *source_p, int temp_time, | |
89 | const char *name, const char *reason); | |
90 | static void handle_remote_unxline(struct Client *source_p, const char *name); | |
91 | ||
92 | static void remove_xline(struct Client *source_p, const char *name, | |
93 | int propagated); | |
94 | ||
95 | ||
96 | /* m_xline() | |
97 | * | |
98 | * parv[1] - thing to xline | |
99 | * parv[2] - optional type/reason | |
100 | * parv[3] - reason | |
101 | */ | |
102 | static int | |
103 | mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
104 | { | |
105 | struct ConfItem *aconf; | |
106 | const char *name; | |
107 | const char *reason; | |
108 | const char *target_server = NULL; | |
109 | int temp_time; | |
110 | int loc = 1; | |
111 | int propagated = ConfigFileEntry.use_propagated_bans; | |
112 | ||
113 | if(!IsOperXline(source_p)) | |
114 | { | |
115 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "xline"); | |
116 | return 0; | |
117 | } | |
118 | ||
119 | if((temp_time = valid_temp_time(parv[loc])) >= 0) | |
120 | loc++; | |
121 | /* we just set temp_time to -1! */ | |
122 | else | |
123 | temp_time = 0; | |
124 | ||
125 | name = parv[loc]; | |
126 | loc++; | |
127 | ||
128 | /* XLINE <gecos> ON <server> :<reason> */ | |
129 | if(parc >= loc + 2 && !irccmp(parv[loc], "ON")) | |
130 | { | |
131 | if(!IsOperRemoteBan(source_p)) | |
132 | { | |
133 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
134 | me.name, source_p->name, "remoteban"); | |
135 | return 0; | |
136 | } | |
137 | ||
138 | target_server = parv[loc + 1]; | |
139 | loc += 2; | |
140 | } | |
141 | ||
142 | if(parc <= loc || EmptyString(parv[loc])) | |
143 | { | |
144 | sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), | |
145 | me.name, source_p->name, "XLINE"); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | reason = parv[loc]; | |
150 | ||
151 | if(target_server != NULL) | |
152 | { | |
153 | propagate_xline(source_p, target_server, temp_time, name, "2", reason); | |
154 | ||
155 | if(!match(target_server, me.name)) | |
156 | return 0; | |
157 | ||
158 | /* Set as local-only. */ | |
159 | propagated = 0; | |
160 | } | |
161 | else if(!propagated && rb_dlink_list_length(&cluster_conf_list) > 0) | |
162 | cluster_xline(source_p, temp_time, name, reason); | |
163 | ||
164 | if((aconf = find_xline_mask(name)) != NULL) | |
165 | { | |
166 | sendto_one(source_p, ":%s NOTICE %s :[%s] already X-Lined by [%s] - %s", | |
167 | me.name, source_p->name, name, aconf->host, aconf->passwd); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | if(!valid_xline(source_p, name, reason)) | |
172 | return 0; | |
173 | ||
174 | if(propagated && temp_time == 0) | |
175 | { | |
176 | sendto_one_notice(source_p, ":Cannot set a permanent global ban"); | |
177 | return 0; | |
178 | } | |
179 | ||
180 | apply_xline(source_p, name, reason, temp_time, propagated); | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | /* ms_xline() | |
186 | * | |
187 | * handles a remote xline | |
188 | */ | |
189 | static int | |
190 | ms_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
191 | { | |
192 | /* parv[0] parv[1] parv[2] parv[3] parv[4] | |
193 | * oper target serv xline type reason | |
194 | */ | |
195 | propagate_xline(source_p, parv[1], 0, parv[2], parv[3], parv[4]); | |
196 | ||
197 | if(!IsPerson(source_p)) | |
198 | return 0; | |
199 | ||
200 | /* destined for me? */ | |
201 | if(!match(parv[1], me.name)) | |
202 | return 0; | |
203 | ||
204 | handle_remote_xline(source_p, 0, parv[2], parv[4]); | |
205 | return 0; | |
206 | } | |
207 | ||
208 | static int | |
209 | me_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
210 | { | |
211 | /* time name type :reason */ | |
212 | if(!IsPerson(source_p)) | |
213 | return 0; | |
214 | ||
215 | handle_remote_xline(source_p, atoi(parv[1]), parv[2], parv[4]); | |
216 | return 0; | |
217 | } | |
218 | ||
219 | static void | |
220 | handle_remote_xline(struct Client *source_p, int temp_time, const char *name, const char *reason) | |
221 | { | |
222 | struct ConfItem *aconf; | |
223 | ||
224 | if(!find_shared_conf(source_p->username, source_p->host, | |
225 | source_p->servptr->name, | |
226 | (temp_time > 0) ? SHARED_TXLINE : SHARED_PXLINE)) | |
227 | return; | |
228 | ||
229 | if(!valid_xline(source_p, name, reason)) | |
230 | return; | |
231 | ||
232 | /* already xlined */ | |
233 | if((aconf = find_xline_mask(name)) != NULL) | |
234 | { | |
235 | sendto_one_notice(source_p, ":[%s] already X-Lined by [%s] - %s", name, aconf->host, | |
236 | aconf->passwd); | |
237 | return; | |
238 | } | |
239 | ||
240 | apply_xline(source_p, name, reason, temp_time, 0); | |
241 | } | |
242 | ||
243 | /* valid_xline() | |
244 | * | |
245 | * inputs - client xlining, gecos, reason and whether to warn | |
246 | * outputs - | |
247 | * side effects - checks the xline for validity, erroring if needed | |
248 | */ | |
249 | static int | |
250 | valid_xline(struct Client *source_p, const char *gecos, const char *reason) | |
251 | { | |
252 | if(EmptyString(reason)) | |
253 | { | |
254 | sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), | |
255 | get_id(&me, source_p), get_id(source_p, source_p), "XLINE"); | |
256 | return 0; | |
257 | } | |
258 | ||
259 | if(!valid_wild_card_simple(gecos)) | |
260 | { | |
261 | sendto_one_notice(source_p, | |
262 | ":Please include at least %d non-wildcard " | |
263 | "characters with the xline", | |
264 | ConfigFileEntry.min_nonwildcard_simple); | |
265 | return 0; | |
266 | } | |
267 | ||
268 | return 1; | |
269 | } | |
270 | ||
271 | void | |
272 | apply_xline(struct Client *source_p, const char *name, const char *reason, int temp_time, int propagated) | |
273 | { | |
274 | struct ConfItem *aconf; | |
275 | ||
276 | aconf = make_conf(); | |
277 | aconf->status = CONF_XLINE; | |
278 | aconf->created = rb_current_time(); | |
279 | aconf->host = rb_strdup(name); | |
280 | aconf->passwd = rb_strdup(reason); | |
281 | collapse(aconf->host); | |
282 | ||
283 | aconf->info.oper = operhash_add(get_oper_name(source_p)); | |
284 | ||
285 | if(propagated) | |
286 | { | |
287 | aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY; | |
288 | aconf->hold = rb_current_time() + temp_time; | |
289 | aconf->lifetime = aconf->hold; | |
290 | ||
291 | replace_old_ban(aconf); | |
292 | rb_dlinkAddAlloc(aconf, &prop_bans); | |
293 | ||
294 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
295 | "%s added global %d min. X-Line for [%s] [%s]", | |
296 | get_oper_name(source_p), temp_time / 60, | |
297 | aconf->host, reason); | |
298 | ilog(L_KLINE, "X %s %d %s %s", | |
299 | get_oper_name(source_p), temp_time / 60, name, reason); | |
300 | sendto_one_notice(source_p, ":Added global %d min. X-Line [%s]", | |
301 | temp_time / 60, aconf->host); | |
302 | sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS, | |
303 | ":%s BAN X * %s %lu %d %d * :%s", | |
304 | source_p->id, aconf->host, | |
305 | (unsigned long)aconf->created, | |
306 | (int)(aconf->hold - aconf->created), | |
307 | (int)(aconf->lifetime - aconf->created), | |
308 | reason); | |
309 | } | |
310 | else if(temp_time > 0) | |
311 | { | |
312 | aconf->hold = rb_current_time() + temp_time; | |
313 | ||
314 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
315 | "%s added temporary %d min. X-Line for [%s] [%s]", | |
316 | get_oper_name(source_p), temp_time / 60, | |
317 | aconf->host, reason); | |
318 | ilog(L_KLINE, "X %s %d %s %s", | |
319 | get_oper_name(source_p), temp_time / 60, name, reason); | |
320 | sendto_one_notice(source_p, ":Added temporary %d min. X-Line [%s]", | |
321 | temp_time / 60, aconf->host); | |
322 | } | |
323 | else | |
324 | { | |
325 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s added X-Line for [%s] [%s]", | |
326 | get_oper_name(source_p), aconf->host, aconf->passwd); | |
327 | sendto_one_notice(source_p, ":Added X-Line for [%s] [%s]", | |
328 | aconf->host, aconf->passwd); | |
329 | ||
330 | bandb_add(BANDB_XLINE, source_p, aconf->host, NULL, aconf->passwd, NULL, 0); | |
331 | ilog(L_KLINE, "X %s 0 %s %s", get_oper_name(source_p), name, aconf->passwd); | |
332 | } | |
333 | ||
334 | rb_dlinkAddAlloc(aconf, &xline_conf_list); | |
335 | check_xlines(); | |
336 | } | |
337 | ||
338 | static void | |
339 | propagate_xline(struct Client *source_p, const char *target, | |
340 | int temp_time, const char *name, const char *type, const char *reason) | |
341 | { | |
342 | if(!temp_time) | |
343 | { | |
344 | sendto_match_servs(source_p, target, CAP_CLUSTER, NOCAPS, | |
345 | "XLINE %s %s %s :%s", target, name, type, reason); | |
346 | sendto_match_servs(source_p, target, CAP_ENCAP, CAP_CLUSTER, | |
347 | "ENCAP %s XLINE %d %s 2 :%s", target, temp_time, name, reason); | |
348 | } | |
349 | else | |
350 | sendto_match_servs(source_p, target, CAP_ENCAP, NOCAPS, | |
351 | "ENCAP %s XLINE %d %s %s :%s", | |
352 | target, temp_time, name, type, reason); | |
353 | } | |
354 | ||
355 | static void | |
356 | cluster_xline(struct Client *source_p, int temp_time, const char *name, const char *reason) | |
357 | { | |
358 | struct remote_conf *shared_p; | |
359 | rb_dlink_node *ptr; | |
360 | ||
361 | RB_DLINK_FOREACH(ptr, cluster_conf_list.head) | |
362 | { | |
363 | shared_p = ptr->data; | |
364 | ||
365 | /* old protocol cant handle temps, and we dont really want | |
366 | * to convert them to perm.. --fl | |
367 | */ | |
368 | if(!temp_time) | |
369 | { | |
370 | if(!(shared_p->flags & SHARED_PXLINE)) | |
371 | continue; | |
372 | ||
373 | sendto_match_servs(source_p, shared_p->server, CAP_CLUSTER, NOCAPS, | |
374 | "XLINE %s %s 2 :%s", shared_p->server, name, reason); | |
375 | sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, CAP_CLUSTER, | |
376 | "ENCAP %s XLINE 0 %s 2 :%s", | |
377 | shared_p->server, name, reason); | |
378 | } | |
379 | else if(shared_p->flags & SHARED_TXLINE) | |
380 | sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, NOCAPS, | |
381 | "ENCAP %s XLINE %d %s 2 :%s", | |
382 | shared_p->server, temp_time, name, reason); | |
383 | } | |
384 | } | |
385 | ||
386 | /* mo_unxline() | |
387 | * | |
388 | * parv[1] - thing to unxline | |
389 | */ | |
390 | static int | |
391 | mo_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
392 | { | |
393 | int propagated = 1; | |
394 | ||
395 | if(!IsOperXline(source_p)) | |
396 | { | |
397 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "xline"); | |
398 | return 0; | |
399 | } | |
400 | ||
401 | if(parc == 4 && !(irccmp(parv[2], "ON"))) | |
402 | { | |
403 | if(!IsOperRemoteBan(source_p)) | |
404 | { | |
405 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
406 | me.name, source_p->name, "remoteban"); | |
407 | return 0; | |
408 | } | |
409 | ||
410 | propagate_generic(source_p, "UNXLINE", parv[3], CAP_CLUSTER, "%s", parv[1]); | |
411 | ||
412 | if(match(parv[3], me.name) == 0) | |
413 | return 0; | |
414 | ||
415 | propagated = 0; | |
416 | } | |
417 | /* cluster{} moved to remove_xline */ | |
418 | ||
419 | remove_xline(source_p, parv[1], propagated); | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | /* ms_unxline() | |
425 | * | |
426 | * handles a remote unxline | |
427 | */ | |
428 | static int | |
429 | ms_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
430 | { | |
431 | /* parv[0] parv[1] parv[2] | |
432 | * oper target server gecos | |
433 | */ | |
434 | propagate_generic(source_p, "UNXLINE", parv[1], CAP_CLUSTER, "%s", parv[2]); | |
435 | ||
436 | if(!match(parv[1], me.name)) | |
437 | return 0; | |
438 | ||
439 | if(!IsPerson(source_p)) | |
440 | return 0; | |
441 | ||
442 | handle_remote_unxline(source_p, parv[2]); | |
443 | return 0; | |
444 | } | |
445 | ||
446 | static int | |
447 | me_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
448 | { | |
449 | /* name */ | |
450 | if(!IsPerson(source_p)) | |
451 | return 0; | |
452 | ||
453 | handle_remote_unxline(source_p, parv[1]); | |
454 | return 0; | |
455 | } | |
456 | ||
457 | static void | |
458 | handle_remote_unxline(struct Client *source_p, const char *name) | |
459 | { | |
460 | if(!find_shared_conf(source_p->username, source_p->host, | |
461 | source_p->servptr->name, SHARED_UNXLINE)) | |
462 | return; | |
463 | ||
464 | remove_xline(source_p, name, 0); | |
465 | ||
466 | return; | |
467 | } | |
468 | ||
469 | static void | |
470 | remove_xline(struct Client *source_p, const char *name, int propagated) | |
471 | { | |
472 | struct ConfItem *aconf; | |
473 | rb_dlink_node *ptr; | |
474 | ||
475 | RB_DLINK_FOREACH(ptr, xline_conf_list.head) | |
476 | { | |
477 | aconf = ptr->data; | |
478 | ||
479 | if(!irccmp(aconf->host, name)) | |
480 | { | |
481 | if(aconf->lifetime) | |
482 | { | |
483 | if(!propagated) | |
484 | { | |
485 | sendto_one_notice(source_p, ":Cannot remove global X-Line %s on specific servers", name); | |
486 | return; | |
487 | } | |
488 | ptr = rb_dlinkFind(aconf, &prop_bans); | |
489 | if(ptr == NULL) | |
490 | return; | |
491 | sendto_one_notice(source_p, ":X-Line for [%s] is removed", name); | |
492 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
493 | "%s has removed the global X-Line for: [%s]", | |
494 | get_oper_name(source_p), name); | |
495 | ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), name); | |
496 | if(aconf->created < rb_current_time()) | |
497 | aconf->created = rb_current_time(); | |
498 | else | |
499 | aconf->created++; | |
500 | aconf->hold = aconf->created; | |
501 | operhash_delete(aconf->info.oper); | |
502 | aconf->info.oper = operhash_add(get_oper_name(source_p)); | |
503 | aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY; | |
504 | sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS, | |
505 | ":%s BAN X * %s %lu %d %d * :*", | |
506 | source_p->id, aconf->host, | |
507 | (unsigned long)aconf->created, | |
508 | 0, | |
509 | (int)(aconf->lifetime - aconf->created)); | |
510 | remove_reject_mask(aconf->host, NULL); | |
511 | deactivate_conf(aconf, ptr); | |
512 | return; | |
513 | } | |
514 | else if(propagated && rb_dlink_list_length(&cluster_conf_list)) | |
515 | cluster_generic(source_p, "UNXLINE", SHARED_UNXLINE, CAP_CLUSTER, "%s", name); | |
516 | if(!aconf->hold) | |
517 | { | |
518 | bandb_del(BANDB_XLINE, aconf->host, NULL); | |
519 | ||
520 | sendto_one_notice(source_p, ":X-Line for [%s] is removed", aconf->host); | |
521 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
522 | "%s has removed the X-Line for: [%s]", | |
523 | get_oper_name(source_p), aconf->host); | |
524 | ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), aconf->host); | |
525 | } | |
526 | else | |
527 | { | |
528 | sendto_one_notice(source_p, ":X-Line for [%s] is removed", name); | |
529 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
530 | "%s has removed the temporary X-Line for: [%s]", | |
531 | get_oper_name(source_p), name); | |
532 | ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), name); | |
533 | } | |
534 | ||
535 | remove_reject_mask(aconf->host, NULL); | |
536 | free_conf(aconf); | |
537 | rb_dlinkDestroy(ptr, &xline_conf_list); | |
538 | return; | |
539 | } | |
540 | } | |
541 | ||
542 | if(propagated && rb_dlink_list_length(&cluster_conf_list)) | |
543 | cluster_generic(source_p, "UNXLINE", SHARED_UNXLINE, CAP_CLUSTER, "%s", name); | |
544 | ||
545 | sendto_one_notice(source_p, ":No X-Line for %s", name); | |
546 | ||
547 | return; | |
548 | } |