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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 | ||
55 | static int mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
56 | static int ms_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
57 | static int me_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
58 | static int mo_unxline(struct Client *client_p, struct Client *source_p, int parc, | |
59 | const char *parv[]); | |
60 | static int ms_unxline(struct Client *client_p, struct Client *source_p, int parc, | |
61 | const char *parv[]); | |
62 | static int me_unxline(struct Client *client_p, struct Client *source_p, int parc, | |
63 | const char *parv[]); | |
64 | ||
65 | struct Message xline_msgtab = { | |
66 | "XLINE", 0, 0, 0, MFLG_SLOW, | |
67 | {mg_unreg, mg_not_oper, {ms_xline, 5}, {ms_xline, 5}, {me_xline, 5}, {mo_xline, 3}} | |
68 | }; | |
69 | ||
70 | struct Message unxline_msgtab = { | |
71 | "UNXLINE", 0, 0, 0, MFLG_SLOW, | |
72 | {mg_unreg, mg_not_oper, {ms_unxline, 3}, {ms_unxline, 3}, {me_unxline, 2}, {mo_unxline, 2}} | |
73 | }; | |
74 | ||
75 | mapi_clist_av1 xline_clist[] = { &xline_msgtab, &unxline_msgtab, NULL }; | |
76 | ||
77 | DECLARE_MODULE_AV1(xline, NULL, NULL, xline_clist, NULL, NULL, "$Revision$"); | |
78 | ||
79 | static int valid_xline(struct Client *, const char *, const char *); | |
80 | static void apply_xline(struct Client *client_p, const char *name, | |
81 | const char *reason, int temp_time); | |
82 | static void propagate_xline(struct Client *source_p, const char *target, | |
83 | int temp_time, const char *name, const char *type, const char *reason); | |
84 | static void cluster_xline(struct Client *source_p, int temp_time, | |
85 | const char *name, const char *reason); | |
86 | ||
87 | static void handle_remote_xline(struct Client *source_p, int temp_time, | |
88 | const char *name, const char *reason); | |
89 | static void handle_remote_unxline(struct Client *source_p, const char *name); | |
90 | ||
91 | static void remove_xline(struct Client *source_p, const char *name); | |
92 | ||
93 | ||
94 | /* m_xline() | |
95 | * | |
96 | * parv[1] - thing to xline | |
97 | * parv[2] - optional type/reason | |
98 | * parv[3] - reason | |
99 | */ | |
100 | static int | |
101 | mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
102 | { | |
103 | struct ConfItem *aconf; | |
104 | const char *name; | |
105 | const char *reason; | |
106 | const char *target_server = NULL; | |
107 | int temp_time; | |
108 | int loc = 1; | |
109 | ||
110 | if(!IsOperXline(source_p)) | |
111 | { | |
112 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "xline"); | |
113 | return 0; | |
114 | } | |
115 | ||
116 | if((temp_time = valid_temp_time(parv[loc])) >= 0) | |
117 | loc++; | |
118 | /* we just set temp_time to -1! */ | |
119 | else | |
120 | temp_time = 0; | |
121 | ||
122 | name = parv[loc]; | |
123 | loc++; | |
124 | ||
125 | /* XLINE <gecos> ON <server> :<reason> */ | |
126 | if(parc >= loc + 2 && !irccmp(parv[loc], "ON")) | |
127 | { | |
128 | if(!IsOperRemoteBan(source_p)) | |
129 | { | |
130 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
131 | me.name, source_p->name, "remoteban"); | |
132 | return 0; | |
133 | } | |
134 | ||
135 | target_server = parv[loc + 1]; | |
136 | loc += 2; | |
137 | } | |
138 | ||
139 | if(parc <= loc || EmptyString(parv[loc])) | |
140 | { | |
141 | sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), | |
142 | me.name, source_p->name, "XLINE"); | |
143 | return 0; | |
144 | } | |
145 | ||
146 | reason = parv[loc]; | |
147 | ||
148 | if(target_server != NULL) | |
149 | { | |
150 | propagate_xline(source_p, target_server, temp_time, name, "2", reason); | |
151 | ||
152 | if(!match(target_server, me.name)) | |
153 | return 0; | |
154 | } | |
155 | else if(rb_dlink_list_length(&cluster_conf_list) > 0) | |
156 | cluster_xline(source_p, temp_time, name, reason); | |
157 | ||
158 | if((aconf = find_xline_mask(name)) != NULL) | |
159 | { | |
160 | sendto_one(source_p, ":%s NOTICE %s :[%s] already X-Lined by [%s] - %s", | |
161 | me.name, source_p->name, name, aconf->host, aconf->passwd); | |
162 | return 0; | |
163 | } | |
164 | ||
165 | if(!valid_xline(source_p, name, reason)) | |
166 | return 0; | |
167 | ||
168 | apply_xline(source_p, name, reason, temp_time); | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | /* ms_xline() | |
174 | * | |
175 | * handles a remote xline | |
176 | */ | |
177 | static int | |
178 | ms_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
179 | { | |
180 | /* parv[0] parv[1] parv[2] parv[3] parv[4] | |
181 | * oper target serv xline type reason | |
182 | */ | |
183 | propagate_xline(source_p, parv[1], 0, parv[2], parv[3], parv[4]); | |
184 | ||
185 | if(!IsPerson(source_p)) | |
186 | return 0; | |
187 | ||
188 | /* destined for me? */ | |
189 | if(!match(parv[1], me.name)) | |
190 | return 0; | |
191 | ||
192 | handle_remote_xline(source_p, 0, parv[2], parv[4]); | |
193 | return 0; | |
194 | } | |
195 | ||
196 | static int | |
197 | me_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
198 | { | |
199 | /* time name type :reason */ | |
200 | if(!IsPerson(source_p)) | |
201 | return 0; | |
202 | ||
203 | handle_remote_xline(source_p, atoi(parv[1]), parv[2], parv[4]); | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static void | |
208 | handle_remote_xline(struct Client *source_p, int temp_time, const char *name, const char *reason) | |
209 | { | |
210 | struct ConfItem *aconf; | |
211 | ||
212 | if(!find_shared_conf(source_p->username, source_p->host, | |
213 | source_p->servptr->name, | |
214 | (temp_time > 0) ? SHARED_TXLINE : SHARED_PXLINE)) | |
215 | return; | |
216 | ||
217 | if(!valid_xline(source_p, name, reason)) | |
218 | return; | |
219 | ||
220 | /* already xlined */ | |
221 | if((aconf = find_xline_mask(name)) != NULL) | |
222 | { | |
223 | sendto_one_notice(source_p, ":[%s] already X-Lined by [%s] - %s", name, aconf->host, | |
224 | aconf->passwd); | |
225 | return; | |
226 | } | |
227 | ||
228 | apply_xline(source_p, name, reason, temp_time); | |
229 | } | |
230 | ||
231 | /* valid_xline() | |
232 | * | |
233 | * inputs - client xlining, gecos, reason and whether to warn | |
234 | * outputs - | |
235 | * side effects - checks the xline for validity, erroring if needed | |
236 | */ | |
237 | static int | |
238 | valid_xline(struct Client *source_p, const char *gecos, const char *reason) | |
239 | { | |
240 | if(EmptyString(reason)) | |
241 | { | |
242 | sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), | |
243 | get_id(&me, source_p), get_id(source_p, source_p), "XLINE"); | |
244 | return 0; | |
245 | } | |
246 | ||
247 | if(strchr(reason, ':') != NULL) | |
248 | { | |
249 | sendto_one_notice(source_p, ":Invalid character ':' in comment"); | |
250 | return 0; | |
251 | } | |
252 | ||
253 | if(strchr(reason, '"')) | |
254 | { | |
255 | sendto_one_notice(source_p, ":Invalid character '\"' in comment"); | |
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) | |
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 | if(temp_time > 0) | |
284 | { | |
285 | aconf->hold = rb_current_time() + temp_time; | |
286 | ||
287 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
288 | "%s added temporary %d min. X-Line for [%s] [%s]", | |
289 | get_oper_name(source_p), temp_time / 60, | |
290 | aconf->host, reason); | |
291 | ilog(L_KLINE, "X %s %d %s %s", | |
292 | get_oper_name(source_p), temp_time / 60, name, reason); | |
293 | sendto_one_notice(source_p, ":Added temporary %d min. X-Line [%s]", | |
294 | temp_time / 60, aconf->host); | |
295 | } | |
296 | else | |
297 | { | |
298 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s added X-Line for [%s] [%s]", | |
299 | get_oper_name(source_p), aconf->host, aconf->passwd); | |
300 | sendto_one_notice(source_p, ":Added X-Line for [%s] [%s]", | |
301 | aconf->host, aconf->passwd); | |
302 | ||
303 | bandb_add(BANDB_XLINE, source_p, aconf->host, NULL, aconf->passwd, NULL, 0); | |
304 | ilog(L_KLINE, "X %s 0 %s %s", get_oper_name(source_p), name, aconf->passwd); | |
305 | } | |
306 | ||
307 | rb_dlinkAddAlloc(aconf, &xline_conf_list); | |
308 | check_xlines(); | |
309 | } | |
310 | ||
311 | static void | |
312 | propagate_xline(struct Client *source_p, const char *target, | |
313 | int temp_time, const char *name, const char *type, const char *reason) | |
314 | { | |
315 | if(!temp_time) | |
316 | { | |
317 | sendto_match_servs(source_p, target, CAP_CLUSTER, NOCAPS, | |
318 | "XLINE %s %s %s :%s", target, name, type, reason); | |
319 | sendto_match_servs(source_p, target, CAP_ENCAP, CAP_CLUSTER, | |
320 | "ENCAP %s XLINE %d %s 2 :%s", target, temp_time, name, reason); | |
321 | } | |
322 | else | |
323 | sendto_match_servs(source_p, target, CAP_ENCAP, NOCAPS, | |
324 | "ENCAP %s XLINE %d %s %s :%s", | |
325 | target, temp_time, name, type, reason); | |
326 | } | |
327 | ||
328 | static void | |
329 | cluster_xline(struct Client *source_p, int temp_time, const char *name, const char *reason) | |
330 | { | |
331 | struct remote_conf *shared_p; | |
332 | rb_dlink_node *ptr; | |
333 | ||
334 | RB_DLINK_FOREACH(ptr, cluster_conf_list.head) | |
335 | { | |
336 | shared_p = ptr->data; | |
337 | ||
338 | /* old protocol cant handle temps, and we dont really want | |
339 | * to convert them to perm.. --fl | |
340 | */ | |
341 | if(!temp_time) | |
342 | { | |
343 | if(!(shared_p->flags & SHARED_PXLINE)) | |
344 | continue; | |
345 | ||
346 | sendto_match_servs(source_p, shared_p->server, CAP_CLUSTER, NOCAPS, | |
347 | "XLINE %s %s 2 :%s", shared_p->server, name, reason); | |
348 | sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, CAP_CLUSTER, | |
349 | "ENCAP %s XLINE 0 %s 2 :%s", | |
350 | shared_p->server, name, reason); | |
351 | } | |
352 | else if(shared_p->flags & SHARED_TXLINE) | |
353 | sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, NOCAPS, | |
354 | "ENCAP %s XLINE %d %s 2 :%s", | |
355 | shared_p->server, temp_time, name, reason); | |
356 | } | |
357 | } | |
358 | ||
359 | /* mo_unxline() | |
360 | * | |
361 | * parv[1] - thing to unxline | |
362 | */ | |
363 | static int | |
364 | mo_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
365 | { | |
366 | if(!IsOperXline(source_p)) | |
367 | { | |
368 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "xline"); | |
369 | return 0; | |
370 | } | |
371 | ||
372 | if(parc == 4 && !(irccmp(parv[2], "ON"))) | |
373 | { | |
374 | if(!IsOperRemoteBan(source_p)) | |
375 | { | |
376 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
377 | me.name, source_p->name, "remoteban"); | |
378 | return 0; | |
379 | } | |
380 | ||
381 | propagate_generic(source_p, "UNXLINE", parv[3], CAP_CLUSTER, "%s", parv[1]); | |
382 | ||
383 | if(match(parv[3], me.name) == 0) | |
384 | return 0; | |
385 | } | |
386 | else if(rb_dlink_list_length(&cluster_conf_list)) | |
387 | cluster_generic(source_p, "UNXLINE", SHARED_UNXLINE, CAP_CLUSTER, "%s", parv[1]); | |
388 | ||
389 | remove_xline(source_p, parv[1]); | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | /* ms_unxline() | |
395 | * | |
396 | * handles a remote unxline | |
397 | */ | |
398 | static int | |
399 | ms_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
400 | { | |
401 | /* parv[0] parv[1] parv[2] | |
402 | * oper target server gecos | |
403 | */ | |
404 | propagate_generic(source_p, "UNXLINE", parv[1], CAP_CLUSTER, "%s", parv[2]); | |
405 | ||
406 | if(!match(parv[1], me.name)) | |
407 | return 0; | |
408 | ||
409 | if(!IsPerson(source_p)) | |
410 | return 0; | |
411 | ||
412 | handle_remote_unxline(source_p, parv[2]); | |
413 | return 0; | |
414 | } | |
415 | ||
416 | static int | |
417 | me_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
418 | { | |
419 | /* name */ | |
420 | if(!IsPerson(source_p)) | |
421 | return 0; | |
422 | ||
423 | handle_remote_unxline(source_p, parv[1]); | |
424 | return 0; | |
425 | } | |
426 | ||
427 | static void | |
428 | handle_remote_unxline(struct Client *source_p, const char *name) | |
429 | { | |
430 | if(!find_shared_conf(source_p->username, source_p->host, | |
431 | source_p->servptr->name, SHARED_UNXLINE)) | |
432 | return; | |
433 | ||
434 | remove_xline(source_p, name); | |
435 | ||
436 | return; | |
437 | } | |
438 | ||
439 | static void | |
440 | remove_xline(struct Client *source_p, const char *name) | |
441 | { | |
442 | struct ConfItem *aconf; | |
443 | rb_dlink_node *ptr; | |
444 | ||
445 | RB_DLINK_FOREACH(ptr, xline_conf_list.head) | |
446 | { | |
447 | aconf = ptr->data; | |
448 | ||
449 | if(!irccmp(aconf->host, name)) | |
450 | { | |
451 | if(!aconf->hold) | |
452 | { | |
453 | bandb_del(BANDB_XLINE, aconf->host, NULL); | |
454 | ||
455 | sendto_one_notice(source_p, ":X-Line for [%s] is removed", aconf->host); | |
456 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
457 | "%s has removed the X-Line for: [%s]", | |
458 | get_oper_name(source_p), aconf->host); | |
459 | ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), aconf->host); | |
460 | } | |
461 | else | |
462 | { | |
463 | sendto_one_notice(source_p, ":X-Line for [%s] is removed", name); | |
464 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
465 | "%s has removed the temporary X-Line for: [%s]", | |
466 | get_oper_name(source_p), name); | |
467 | ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), name); | |
468 | } | |
469 | ||
470 | remove_reject_mask(aconf->host, NULL); | |
471 | free_conf(aconf); | |
472 | rb_dlinkDestroy(ptr, &xline_conf_list); | |
473 | return; | |
474 | } | |
475 | } | |
476 | ||
477 | sendto_one_notice(source_p, ":No X-Line for %s", name); | |
478 | ||
479 | return; | |
480 | } |