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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_kline.c: Bans/unbans a user. | |
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 | ||
25 | #include "stdinc.h" | |
26 | #include "channel.h" | |
27 | #include "class.h" | |
28 | #include "client.h" | |
29 | #include "match.h" | |
30 | #include "ircd.h" | |
31 | #include "hostmask.h" | |
32 | #include "numeric.h" | |
33 | #include "s_conf.h" | |
34 | #include "s_newconf.h" | |
35 | #include "logger.h" | |
36 | #include "send.h" | |
37 | #include "hash.h" | |
38 | #include "s_serv.h" | |
39 | #include "msg.h" | |
40 | #include "parse.h" | |
41 | #include "modules.h" | |
42 | #include "reject.h" | |
43 | #include "bandbi.h" | |
44 | #include "operhash.h" | |
45 | ||
46 | static const char kline_desc[] = "Provides the KLINE facility to ban users via hostmask"; | |
47 | ||
48 | static void mo_kline(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
49 | static void ms_kline(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
50 | static void me_kline(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
51 | static void mo_unkline(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
52 | static void ms_unkline(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
53 | static void me_unkline(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
54 | ||
55 | struct Message kline_msgtab = { | |
56 | "KLINE", 0, 0, 0, 0, | |
57 | {mg_unreg, mg_not_oper, {ms_kline, 5}, {ms_kline, 5}, {me_kline, 5}, {mo_kline, 3}} | |
58 | }; | |
59 | ||
60 | struct Message unkline_msgtab = { | |
61 | "UNKLINE", 0, 0, 0, 0, | |
62 | {mg_unreg, mg_not_oper, {ms_unkline, 4}, {ms_unkline, 4}, {me_unkline, 3}, {mo_unkline, 2}} | |
63 | }; | |
64 | ||
65 | mapi_clist_av1 kline_clist[] = { &kline_msgtab, &unkline_msgtab, NULL }; | |
66 | ||
67 | DECLARE_MODULE_AV2(kline, NULL, NULL, kline_clist, NULL, NULL, NULL, NULL, kline_desc); | |
68 | ||
69 | /* Local function prototypes */ | |
70 | static bool find_user_host(struct Client *source_p, const char *userhost, char *user, char *host); | |
71 | static bool valid_user_host(struct Client *source_p, const char *user, const char *host); | |
72 | ||
73 | static void handle_remote_kline(struct Client *source_p, int tkline_time, | |
74 | const char *user, const char *host, const char *reason); | |
75 | static void apply_kline(struct Client *source_p, struct ConfItem *aconf, | |
76 | const char *reason, const char *oper_reason); | |
77 | static void apply_tkline(struct Client *source_p, struct ConfItem *aconf, | |
78 | const char *, const char *, int); | |
79 | static void apply_prop_kline(struct Client *source_p, struct ConfItem *aconf, | |
80 | const char *, const char *, int); | |
81 | static bool already_placed_kline(struct Client *, const char *, const char *, int); | |
82 | ||
83 | static void handle_remote_unkline(struct Client *source_p, const char *user, const char *host); | |
84 | static void remove_permkline_match(struct Client *, struct ConfItem *); | |
85 | static bool remove_temp_kline(struct Client *, struct ConfItem *); | |
86 | static void remove_prop_kline(struct Client *, struct ConfItem *); | |
87 | ||
88 | ||
89 | /* mo_kline() | |
90 | * | |
91 | * parv[1] - temp time or user@host | |
92 | * parv[2] - user@host, "ON", or reason | |
93 | * parv[3] - "ON", reason, or server to target | |
94 | * parv[4] - server to target, or reason | |
95 | * parv[5] - reason | |
96 | */ | |
97 | static void | |
98 | mo_kline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
99 | { | |
100 | char def[] = "No Reason"; | |
101 | char user[USERLEN + 2]; | |
102 | char host_buf[HOSTLEN + 3], *host = host_buf + 1; | |
103 | char *reason = def; | |
104 | char *oper_reason; | |
105 | const char *target_server = NULL; | |
106 | struct ConfItem *aconf; | |
107 | int tkline_time = 0; | |
108 | int loc = 1; | |
109 | bool propagated = ConfigFileEntry.use_propagated_bans; | |
110 | ||
111 | if(!IsOperK(source_p)) | |
112 | { | |
113 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "kline"); | |
114 | return; | |
115 | } | |
116 | ||
117 | if((tkline_time = valid_temp_time(parv[loc])) >= 0) | |
118 | loc++; | |
119 | /* we just set tkline_time to -1! */ | |
120 | else | |
121 | tkline_time = 0; | |
122 | ||
123 | if(find_user_host(source_p, parv[loc], user, host) == 0) | |
124 | return; | |
125 | ||
126 | if (*host == ':') | |
127 | { | |
128 | host--; | |
129 | *host = '0'; | |
130 | } | |
131 | ||
132 | loc++; | |
133 | ||
134 | if(parc >= loc + 2 && !irccmp(parv[loc], "ON")) | |
135 | { | |
136 | if(!IsOperRemoteBan(source_p)) | |
137 | { | |
138 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
139 | me.name, source_p->name, "remoteban"); | |
140 | return; | |
141 | } | |
142 | ||
143 | target_server = parv[loc + 1]; | |
144 | loc += 2; | |
145 | } | |
146 | ||
147 | if(parc <= loc || EmptyString(parv[loc])) | |
148 | { | |
149 | sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), | |
150 | me.name, source_p->name, "KLINE"); | |
151 | return; | |
152 | } | |
153 | ||
154 | reason = LOCAL_COPY(parv[loc]); | |
155 | ||
156 | if(parse_netmask_strict(host, NULL, NULL) == HM_ERROR) | |
157 | { | |
158 | sendto_one_notice(source_p, | |
159 | ":[%s@%s] looks like an ill-formed IP K-line, refusing to set it", | |
160 | user, host); | |
161 | return; | |
162 | } | |
163 | ||
164 | if(target_server != NULL) | |
165 | { | |
166 | if (tkline_time) | |
167 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, | |
168 | "%s is adding a temporary %d min. K-Line for [%s@%s] on %s [%s]", | |
169 | get_oper_name(source_p), tkline_time / 60, user, host, target_server, reason); | |
170 | else | |
171 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, | |
172 | "%s is adding a K-Line for [%s@%s] on %s [%s]", | |
173 | get_oper_name(source_p), user, host, target_server, reason); | |
174 | ||
175 | propagate_generic(source_p, "KLINE", target_server, CAP_KLN, | |
176 | "%d %s %s :%s", tkline_time, user, host, reason); | |
177 | ||
178 | /* If we are sending it somewhere that doesnt include us, stop */ | |
179 | if(!match(target_server, me.name)) | |
180 | return; | |
181 | ||
182 | /* Set as local-only. */ | |
183 | propagated = false; | |
184 | } | |
185 | /* if we have cluster servers, send it to them.. */ | |
186 | else if(!propagated && rb_dlink_list_length(&cluster_conf_list) > 0) | |
187 | cluster_generic(source_p, "KLINE", | |
188 | (tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE, CAP_KLN, | |
189 | "%lu %s %s :%s", tkline_time, user, host, reason); | |
190 | ||
191 | if(!valid_user_host(source_p, user, host)) | |
192 | return; | |
193 | ||
194 | if(!valid_wild_card(user, host)) | |
195 | { | |
196 | sendto_one_notice(source_p, | |
197 | ":Please include at least %d non-wildcard " | |
198 | "characters with the user@host", | |
199 | ConfigFileEntry.min_nonwildcard); | |
200 | return; | |
201 | } | |
202 | ||
203 | if(propagated && tkline_time == 0) | |
204 | { | |
205 | sendto_one_notice(source_p, ":Cannot set a permanent global ban"); | |
206 | return; | |
207 | } | |
208 | ||
209 | if(already_placed_kline(source_p, user, host, tkline_time)) | |
210 | return; | |
211 | ||
212 | rb_set_time(); | |
213 | aconf = make_conf(); | |
214 | aconf->status = CONF_KILL; | |
215 | aconf->created = rb_current_time(); | |
216 | aconf->host = rb_strdup(host); | |
217 | aconf->user = rb_strdup(user); | |
218 | aconf->port = 0; | |
219 | aconf->info.oper = operhash_add(get_oper_name(source_p)); | |
220 | ||
221 | if(strlen(reason) > BANREASONLEN) | |
222 | reason[BANREASONLEN] = '\0'; | |
223 | ||
224 | /* Look for an oper reason */ | |
225 | if((oper_reason = strchr(reason, '|')) != NULL) | |
226 | { | |
227 | *oper_reason = '\0'; | |
228 | oper_reason++; | |
229 | ||
230 | if(!EmptyString(oper_reason)) | |
231 | aconf->spasswd = rb_strdup(oper_reason); | |
232 | } | |
233 | aconf->passwd = rb_strdup(reason); | |
234 | ||
235 | if(propagated) | |
236 | apply_prop_kline(source_p, aconf, reason, oper_reason, tkline_time); | |
237 | else if(tkline_time > 0) | |
238 | apply_tkline(source_p, aconf, reason, oper_reason, tkline_time); | |
239 | else | |
240 | apply_kline(source_p, aconf, reason, oper_reason); | |
241 | ||
242 | check_one_kline(aconf); | |
243 | } | |
244 | ||
245 | /* ms_kline() | |
246 | * | |
247 | * parv[1] - server targeted at | |
248 | * parv[2] - tkline time (0 if perm) | |
249 | * parv[3] - user | |
250 | * parv[4] - host | |
251 | * parv[5] - reason | |
252 | */ | |
253 | static void | |
254 | ms_kline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
255 | { | |
256 | int tkline_time = atoi(parv[2]); | |
257 | ||
258 | /* 1.5-3 and earlier contains a bug that allows remote klines to be | |
259 | * sent with an empty reason field. This is a protocol violation, | |
260 | * but its not worth dropping the link over.. --anfl | |
261 | */ | |
262 | if(parc < 6 || EmptyString(parv[5])) | |
263 | return; | |
264 | ||
265 | propagate_generic(source_p, "KLINE", parv[1], CAP_KLN, | |
266 | "%d %s %s :%s", tkline_time, parv[3], parv[4], parv[5]); | |
267 | ||
268 | if(!match(parv[1], me.name)) | |
269 | return; | |
270 | ||
271 | if(!IsPerson(source_p)) | |
272 | return; | |
273 | ||
274 | handle_remote_kline(source_p, tkline_time, parv[3], parv[4], parv[5]); | |
275 | } | |
276 | ||
277 | static void | |
278 | me_kline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
279 | { | |
280 | /* <tkline_time> <user> <host> :<reason> */ | |
281 | if(!IsPerson(source_p)) | |
282 | return; | |
283 | ||
284 | handle_remote_kline(source_p, atoi(parv[1]), parv[2], parv[3], parv[4]); | |
285 | } | |
286 | ||
287 | static void | |
288 | handle_remote_kline(struct Client *source_p, int tkline_time, | |
289 | const char *user, const char *host, const char *kreason) | |
290 | { | |
291 | char *reason = LOCAL_COPY(kreason); | |
292 | struct ConfItem *aconf = NULL; | |
293 | char *oper_reason; | |
294 | ||
295 | if(!valid_user_host(source_p, user, host)) | |
296 | return; | |
297 | ||
298 | if(!valid_wild_card(user, host)) | |
299 | { | |
300 | sendto_one_notice(source_p, | |
301 | ":Please include at least %d non-wildcard " | |
302 | "characters with the user@host", | |
303 | ConfigFileEntry.min_nonwildcard); | |
304 | return; | |
305 | } | |
306 | ||
307 | if(already_placed_kline(source_p, user, host, tkline_time)) | |
308 | return; | |
309 | ||
310 | aconf = make_conf(); | |
311 | ||
312 | aconf->status = CONF_KILL; | |
313 | aconf->created = rb_current_time(); | |
314 | aconf->user = rb_strdup(user); | |
315 | aconf->host = rb_strdup(host); | |
316 | aconf->info.oper = operhash_add(get_oper_name(source_p)); | |
317 | ||
318 | if(strlen(reason) > BANREASONLEN) | |
319 | reason[BANREASONLEN] = '\0'; | |
320 | ||
321 | /* Look for an oper reason */ | |
322 | if((oper_reason = strchr(reason, '|')) != NULL) | |
323 | { | |
324 | *oper_reason = '\0'; | |
325 | oper_reason++; | |
326 | ||
327 | if(!EmptyString(oper_reason)) | |
328 | aconf->spasswd = rb_strdup(oper_reason); | |
329 | } | |
330 | aconf->passwd = rb_strdup(reason); | |
331 | ||
332 | if(tkline_time > 0) | |
333 | apply_tkline(source_p, aconf, reason, oper_reason, tkline_time); | |
334 | else | |
335 | apply_kline(source_p, aconf, reason, oper_reason); | |
336 | ||
337 | check_one_kline(aconf); | |
338 | } | |
339 | ||
340 | /* mo_unkline() | |
341 | * | |
342 | * parv[1] - kline to remove | |
343 | * parv[2] - optional "ON" | |
344 | * parv[3] - optional target server | |
345 | */ | |
346 | static void | |
347 | mo_unkline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
348 | { | |
349 | const char *user; | |
350 | char *host; | |
351 | char splat[] = "*"; | |
352 | char *h = LOCAL_COPY(parv[1]); | |
353 | struct ConfItem *aconf; | |
354 | bool propagated = true; | |
355 | ||
356 | if(!IsOperUnkline(source_p)) | |
357 | { | |
358 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "unkline"); | |
359 | return; | |
360 | } | |
361 | ||
362 | if((host = strchr(h, '@')) || *h == '*' || strchr(h, '.') || strchr(h, ':')) | |
363 | { | |
364 | /* Explicit user@host mask given */ | |
365 | ||
366 | if(host) /* Found user@host */ | |
367 | { | |
368 | *host++ = '\0'; | |
369 | ||
370 | /* check for @host */ | |
371 | if(*h) | |
372 | user = h; | |
373 | else | |
374 | user = splat; | |
375 | ||
376 | /* check for user@ */ | |
377 | if(!*host) | |
378 | host = splat; | |
379 | } | |
380 | else | |
381 | { | |
382 | user = splat; /* no @ found, assume its *@somehost */ | |
383 | host = h; | |
384 | } | |
385 | } | |
386 | else | |
387 | { | |
388 | sendto_one_notice(source_p, ":Invalid parameters"); | |
389 | return; | |
390 | } | |
391 | ||
392 | /* possible remote kline.. */ | |
393 | if((parc > 3) && (irccmp(parv[2], "ON") == 0)) | |
394 | { | |
395 | if(!IsOperRemoteBan(source_p)) | |
396 | { | |
397 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
398 | me.name, source_p->name, "remoteban"); | |
399 | return; | |
400 | } | |
401 | ||
402 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is removing the K-Line for [%s@%s] on %s", | |
403 | get_oper_name(source_p), user, host, parv[3]); | |
404 | ||
405 | propagate_generic(source_p, "UNKLINE", parv[3], CAP_UNKLN, "%s %s", user, host); | |
406 | ||
407 | if(match(parv[3], me.name) == 0) | |
408 | return; | |
409 | ||
410 | propagated = false; | |
411 | } | |
412 | ||
413 | aconf = find_exact_conf_by_address(host, CONF_KILL, user); | |
414 | ||
415 | /* No clustering for removing a propagated kline */ | |
416 | if(propagated && (aconf == NULL || !aconf->lifetime) && | |
417 | rb_dlink_list_length(&cluster_conf_list) > 0) | |
418 | cluster_generic(source_p, "UNKLINE", SHARED_UNKLINE, CAP_UNKLN, | |
419 | "%s %s", user, host); | |
420 | ||
421 | if(aconf == NULL) | |
422 | { | |
423 | sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host); | |
424 | return; | |
425 | } | |
426 | ||
427 | if(aconf->lifetime) | |
428 | { | |
429 | if(propagated) | |
430 | remove_prop_kline(source_p, aconf); | |
431 | else | |
432 | sendto_one_notice(source_p, ":Cannot remove global K-Line %s@%s on specific servers", user, host); | |
433 | return; | |
434 | } | |
435 | ||
436 | if(remove_temp_kline(source_p, aconf)) | |
437 | return; | |
438 | ||
439 | remove_permkline_match(source_p, aconf); | |
440 | } | |
441 | ||
442 | /* ms_unkline() | |
443 | * | |
444 | * parv[1] - target server | |
445 | * parv[2] - user to unkline | |
446 | * parv[3] - host to unkline | |
447 | */ | |
448 | static void | |
449 | ms_unkline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
450 | { | |
451 | /* parv[0] parv[1] parv[2] parv[3] | |
452 | * oper target server user host */ | |
453 | propagate_generic(source_p, "UNKLINE", parv[1], CAP_UNKLN, "%s %s", parv[2], parv[3]); | |
454 | ||
455 | if(!match(parv[1], me.name)) | |
456 | return; | |
457 | ||
458 | if(!IsPerson(source_p)) | |
459 | return; | |
460 | ||
461 | handle_remote_unkline(source_p, parv[2], parv[3]); | |
462 | } | |
463 | ||
464 | static void | |
465 | me_unkline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
466 | { | |
467 | /* user host */ | |
468 | if(!IsPerson(source_p)) | |
469 | return; | |
470 | ||
471 | handle_remote_unkline(source_p, parv[1], parv[2]); | |
472 | } | |
473 | ||
474 | static void | |
475 | handle_remote_unkline(struct Client *source_p, const char *user, const char *host) | |
476 | { | |
477 | struct ConfItem *aconf; | |
478 | ||
479 | aconf = find_exact_conf_by_address(host, CONF_KILL, user); | |
480 | if(aconf == NULL) | |
481 | { | |
482 | sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host); | |
483 | return; | |
484 | } | |
485 | if(aconf->lifetime) | |
486 | { | |
487 | sendto_one_notice(source_p, ":Cannot remove global K-Line %s@%s on specific servers", user, host); | |
488 | return; | |
489 | } | |
490 | ||
491 | if(remove_temp_kline(source_p, aconf)) | |
492 | return; | |
493 | ||
494 | remove_permkline_match(source_p, aconf); | |
495 | } | |
496 | ||
497 | /* apply_kline() | |
498 | * | |
499 | * inputs - | |
500 | * output - NONE | |
501 | * side effects - kline as given, is added to the hashtable | |
502 | * and conf file | |
503 | */ | |
504 | static void | |
505 | apply_kline(struct Client *source_p, struct ConfItem *aconf, | |
506 | const char *reason, const char *oper_reason) | |
507 | { | |
508 | add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf); | |
509 | bandb_add(BANDB_KLINE, source_p, aconf->user, aconf->host, | |
510 | reason, EmptyString(oper_reason) ? NULL : oper_reason, 0); | |
511 | ||
512 | /* no oper reason.. */ | |
513 | if(EmptyString(oper_reason)) | |
514 | { | |
515 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
516 | "%s added K-Line for [%s@%s] [%s]", | |
517 | get_oper_name(source_p), aconf->user, aconf->host, reason); | |
518 | ilog(L_KLINE, "K %s 0 %s %s %s", | |
519 | get_oper_name(source_p), aconf->user, aconf->host, reason); | |
520 | } | |
521 | else | |
522 | { | |
523 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
524 | "%s added K-Line for [%s@%s] [%s|%s]", | |
525 | get_oper_name(source_p), aconf->user, aconf->host, | |
526 | reason, oper_reason); | |
527 | ilog(L_KLINE, "K %s 0 %s %s %s|%s", | |
528 | get_oper_name(source_p), aconf->user, aconf->host, reason, oper_reason); | |
529 | } | |
530 | ||
531 | sendto_one_notice(source_p, ":Added K-Line [%s@%s]", | |
532 | aconf->user, aconf->host); | |
533 | } | |
534 | ||
535 | /* apply_tkline() | |
536 | * | |
537 | * inputs - | |
538 | * output - NONE | |
539 | * side effects - tkline as given is placed | |
540 | */ | |
541 | static void | |
542 | apply_tkline(struct Client *source_p, struct ConfItem *aconf, | |
543 | const char *reason, const char *oper_reason, int tkline_time) | |
544 | { | |
545 | aconf->hold = rb_current_time() + tkline_time; | |
546 | add_temp_kline(aconf); | |
547 | ||
548 | /* no oper reason.. */ | |
549 | if(EmptyString(oper_reason)) | |
550 | { | |
551 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
552 | "%s added temporary %d min. K-Line for [%s@%s] [%s]", | |
553 | get_oper_name(source_p), tkline_time / 60, | |
554 | aconf->user, aconf->host, reason); | |
555 | ilog(L_KLINE, "K %s %d %s %s %s", | |
556 | get_oper_name(source_p), tkline_time / 60, aconf->user, aconf->host, reason); | |
557 | } | |
558 | else | |
559 | { | |
560 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
561 | "%s added temporary %d min. K-Line for [%s@%s] [%s|%s]", | |
562 | get_oper_name(source_p), tkline_time / 60, | |
563 | aconf->user, aconf->host, reason, oper_reason); | |
564 | ilog(L_KLINE, "K %s %d %s %s %s|%s", | |
565 | get_oper_name(source_p), tkline_time / 60, | |
566 | aconf->user, aconf->host, reason, oper_reason); | |
567 | } | |
568 | ||
569 | sendto_one_notice(source_p, ":Added temporary %d min. K-Line [%s@%s]", | |
570 | tkline_time / 60, aconf->user, aconf->host); | |
571 | } | |
572 | ||
573 | static void | |
574 | apply_prop_kline(struct Client *source_p, struct ConfItem *aconf, | |
575 | const char *reason, const char *oper_reason, int tkline_time) | |
576 | { | |
577 | aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY; | |
578 | aconf->hold = rb_current_time() + tkline_time; | |
579 | aconf->lifetime = aconf->hold; | |
580 | ||
581 | replace_old_ban(aconf); | |
582 | ||
583 | rb_dlinkAddAlloc(aconf, &prop_bans); | |
584 | add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf); | |
585 | ||
586 | /* no oper reason.. */ | |
587 | if(EmptyString(oper_reason)) | |
588 | { | |
589 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
590 | "%s added global %d min. K-Line for [%s@%s] [%s]", | |
591 | get_oper_name(source_p), tkline_time / 60, | |
592 | aconf->user, aconf->host, reason); | |
593 | ilog(L_KLINE, "K %s %d %s %s %s", | |
594 | get_oper_name(source_p), tkline_time / 60, aconf->user, aconf->host, reason); | |
595 | } | |
596 | else | |
597 | { | |
598 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
599 | "%s added global %d min. K-Line for [%s@%s] [%s|%s]", | |
600 | get_oper_name(source_p), tkline_time / 60, | |
601 | aconf->user, aconf->host, reason, oper_reason); | |
602 | ilog(L_KLINE, "K %s %d %s %s %s|%s", | |
603 | get_oper_name(source_p), tkline_time / 60, | |
604 | aconf->user, aconf->host, reason, oper_reason); | |
605 | } | |
606 | ||
607 | sendto_one_notice(source_p, ":Added global %d min. K-Line [%s@%s]", | |
608 | tkline_time / 60, aconf->user, aconf->host); | |
609 | ||
610 | sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS, | |
611 | ":%s BAN K %s %s %lu %d %d * :%s%s%s", | |
612 | source_p->id, aconf->user, aconf->host, | |
613 | (unsigned long)aconf->created, | |
614 | (int)(aconf->hold - aconf->created), | |
615 | (int)(aconf->lifetime - aconf->created), | |
616 | reason, | |
617 | oper_reason ? "|" : "", | |
618 | oper_reason ? oper_reason : ""); | |
619 | } | |
620 | ||
621 | /* find_user_host() | |
622 | * | |
623 | * inputs - client placing kline, user@host, user buffer, host buffer | |
624 | * output - false if not ok to kline, true to kline i.e. if valid user host | |
625 | * side effects - | |
626 | */ | |
627 | static bool | |
628 | find_user_host(struct Client *source_p, const char *userhost, char *luser, char *lhost) | |
629 | { | |
630 | char *hostp; | |
631 | ||
632 | hostp = strchr(userhost, '@'); | |
633 | ||
634 | if(hostp != NULL) /* I'm a little user@host */ | |
635 | { | |
636 | *(hostp++) = '\0'; /* short and squat */ | |
637 | if(*userhost) | |
638 | rb_strlcpy(luser, userhost, USERLEN + 1); /* here is my user */ | |
639 | else | |
640 | strcpy(luser, "*"); | |
641 | if(*hostp) | |
642 | rb_strlcpy(lhost, hostp, HOSTLEN + 1); /* here is my host */ | |
643 | else | |
644 | strcpy(lhost, "*"); | |
645 | } | |
646 | else | |
647 | { | |
648 | /* no '@', no '.', so its not a user@host or host, therefore | |
649 | * its a nick, which support was removed for. | |
650 | */ | |
651 | if(strchr(userhost, '.') == NULL && strchr(userhost, ':') == NULL) | |
652 | { | |
653 | sendto_one_notice(source_p, ":K-Line must be a user@host or host"); | |
654 | return false; | |
655 | } | |
656 | ||
657 | luser[0] = '*'; /* no @ found, assume its *@somehost */ | |
658 | luser[1] = '\0'; | |
659 | rb_strlcpy(lhost, userhost, HOSTLEN + 1); | |
660 | } | |
661 | ||
662 | /* would break the protocol */ | |
663 | if (*luser == ':' || *lhost == ':') | |
664 | { | |
665 | sendto_one_notice(source_p, ":Invalid K-Line"); | |
666 | return false; | |
667 | } | |
668 | ||
669 | return true; | |
670 | } | |
671 | ||
672 | /* valid_user_host() | |
673 | * | |
674 | * inputs - user buffer, host buffer | |
675 | * output - false if invalid, true if valid | |
676 | * side effects - | |
677 | */ | |
678 | static bool | |
679 | valid_user_host(struct Client *source_p, const char *luser, const char *lhost) | |
680 | { | |
681 | /* # is invalid, as are '!' (n!u@h kline) and '@' (u@@h kline) */ | |
682 | if(strchr(lhost, '#') || strchr(luser, '#') || strchr(luser, '!') || strchr(lhost, '@')) | |
683 | { | |
684 | sendto_one_notice(source_p, ":Invalid K-Line"); | |
685 | return false; | |
686 | } | |
687 | ||
688 | return true; | |
689 | } | |
690 | ||
691 | /* already_placed_kline() | |
692 | * | |
693 | * inputs - source to notify, user@host to check, tkline time | |
694 | * outputs - true if a perm kline or a tkline when a tkline is being | |
695 | * set exists, else false | |
696 | * side effects - notifies source_p kline exists | |
697 | */ | |
698 | /* Note: This currently works if the new K-line is a special case of an | |
699 | * existing K-line, but not the other way round. To do that we would | |
700 | * have to walk the hash and check every existing K-line. -A1kmm. | |
701 | */ | |
702 | static bool | |
703 | already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int tkline) | |
704 | { | |
705 | const char *reason, *p; | |
706 | struct rb_sockaddr_storage iphost, *piphost; | |
707 | struct ConfItem *aconf; | |
708 | int t, bits; | |
709 | ||
710 | aconf = find_exact_conf_by_address(lhost, CONF_KILL, luser); | |
711 | if(aconf == NULL && ConfigFileEntry.non_redundant_klines) | |
712 | { | |
713 | bits = 0; | |
714 | t = parse_netmask_strict(lhost, &iphost, &bits); | |
715 | piphost = &iphost; | |
716 | if (t == HM_IPV4) | |
717 | t = AF_INET; | |
718 | else if (t == HM_IPV6) | |
719 | t = AF_INET6; | |
720 | else | |
721 | piphost = NULL; | |
722 | ||
723 | aconf = find_conf_by_address(lhost, NULL, NULL, (struct sockaddr *) piphost, | |
724 | CONF_KILL, t, luser, NULL); | |
725 | if(aconf != NULL) | |
726 | { | |
727 | /* The above was really a lookup of a single IP, | |
728 | * so check if the new kline is wider than the | |
729 | * existing one. | |
730 | * -- jilles | |
731 | */ | |
732 | p = strchr(aconf->host, '/'); | |
733 | if(bits > 0 && (p == NULL || bits < atoi(p + 1))) | |
734 | aconf = NULL; | |
735 | } | |
736 | } | |
737 | if(aconf != NULL) | |
738 | { | |
739 | /* setting a tkline, or existing one is perm */ | |
740 | if(tkline || ((aconf->flags & CONF_FLAGS_TEMPORARY) == 0)) | |
741 | { | |
742 | reason = aconf->passwd ? aconf->passwd : "<No Reason>"; | |
743 | ||
744 | sendto_one_notice(source_p, | |
745 | ":[%s@%s] already K-Lined by [%s@%s] - %s", | |
746 | luser, lhost, aconf->user, aconf->host, reason); | |
747 | return true; | |
748 | } | |
749 | } | |
750 | ||
751 | return false; | |
752 | } | |
753 | ||
754 | /* remove_permkline_match() | |
755 | * | |
756 | * hunts for a permanent kline, and removes it. | |
757 | */ | |
758 | static void | |
759 | remove_permkline_match(struct Client *source_p, struct ConfItem *aconf) | |
760 | { | |
761 | sendto_one_notice(source_p, ":K-Line for [%s@%s] is removed", aconf->user, aconf->host); | |
762 | ||
763 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
764 | "%s has removed the K-Line for: [%s@%s]", | |
765 | get_oper_name(source_p), aconf->user, aconf->host); | |
766 | ||
767 | ilog(L_KLINE, "UK %s %s %s", get_oper_name(source_p), aconf->user, aconf->host); | |
768 | ||
769 | remove_reject_mask(aconf->user, aconf->host); | |
770 | bandb_del(BANDB_KLINE, aconf->user, aconf->host); | |
771 | delete_one_address_conf(aconf->host, aconf); | |
772 | } | |
773 | ||
774 | /* remove_temp_kline() | |
775 | * | |
776 | * inputs - username, hostname to unkline | |
777 | * outputs - | |
778 | * side effects - tries to unkline anything that matches | |
779 | */ | |
780 | static bool | |
781 | remove_temp_kline(struct Client *source_p, struct ConfItem *aconf) | |
782 | { | |
783 | rb_dlink_node *ptr; | |
784 | int i; | |
785 | ||
786 | for(i = 0; i < LAST_TEMP_TYPE; i++) | |
787 | { | |
788 | RB_DLINK_FOREACH(ptr, temp_klines[i].head) | |
789 | { | |
790 | if(aconf == ptr->data) | |
791 | { | |
792 | sendto_one_notice(source_p, | |
793 | ":Un-klined [%s@%s] from temporary k-lines", | |
794 | aconf->user, aconf->host); | |
795 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
796 | "%s has removed the temporary K-Line for: [%s@%s]", | |
797 | get_oper_name(source_p), aconf->user, | |
798 | aconf->host); | |
799 | ||
800 | ilog(L_KLINE, "UK %s %s %s", | |
801 | get_oper_name(source_p), aconf->user, aconf->host); | |
802 | rb_dlinkDestroy(ptr, &temp_klines[i]); | |
803 | remove_reject_mask(aconf->user, aconf->host); | |
804 | delete_one_address_conf(aconf->host, aconf); | |
805 | return true; | |
806 | } | |
807 | } | |
808 | } | |
809 | ||
810 | return false; | |
811 | } | |
812 | ||
813 | static void | |
814 | remove_prop_kline(struct Client *source_p, struct ConfItem *aconf) | |
815 | { | |
816 | rb_dlink_node *ptr; | |
817 | time_t now; | |
818 | ||
819 | ptr = rb_dlinkFind(aconf, &prop_bans); | |
820 | if (!ptr) | |
821 | return; | |
822 | sendto_one_notice(source_p, | |
823 | ":Un-klined [%s@%s] from global k-lines", | |
824 | aconf->user, aconf->host); | |
825 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
826 | "%s has removed the global K-Line for: [%s@%s]", | |
827 | get_oper_name(source_p), aconf->user, | |
828 | aconf->host); | |
829 | ||
830 | ilog(L_KLINE, "UK %s %s %s", | |
831 | get_oper_name(source_p), aconf->user, aconf->host); | |
832 | now = rb_current_time(); | |
833 | if(aconf->created < now) | |
834 | aconf->created = now; | |
835 | else | |
836 | aconf->created++; | |
837 | aconf->hold = aconf->created; | |
838 | operhash_delete(aconf->info.oper); | |
839 | aconf->info.oper = operhash_add(get_oper_name(source_p)); | |
840 | aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY; | |
841 | sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS, | |
842 | ":%s BAN K %s %s %lu %d %d * :*", | |
843 | source_p->id, aconf->user, aconf->host, | |
844 | (unsigned long)aconf->created, | |
845 | 0, | |
846 | (int)(aconf->lifetime - aconf->created)); | |
847 | remove_reject_mask(aconf->user, aconf->host); | |
848 | deactivate_conf(aconf, ptr, now); | |
849 | } |