]>
Commit | Line | Data |
---|---|---|
212380e3 AC |
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 | * | |
88a2a148 | 24 | * $Id: m_kline.c 3466 2007-05-19 23:36:51Z jilles $ |
212380e3 AC |
25 | */ |
26 | ||
27 | #include "stdinc.h" | |
28 | #include "tools.h" | |
29 | #include "channel.h" | |
30 | #include "class.h" | |
31 | #include "client.h" | |
32 | #include "common.h" | |
33 | #include "irc_string.h" | |
34 | #include "sprintf_irc.h" | |
35 | #include "ircd.h" | |
36 | #include "hostmask.h" | |
37 | #include "numeric.h" | |
38 | #include "commio.h" | |
39 | #include "s_conf.h" | |
40 | #include "s_newconf.h" | |
41 | #include "s_log.h" | |
42 | #include "send.h" | |
43 | #include "hash.h" | |
44 | #include "s_serv.h" | |
45 | #include "msg.h" | |
46 | #include "parse.h" | |
47 | #include "modules.h" | |
48 | #include "event.h" | |
49 | ||
50 | static int mo_kline(struct Client *, struct Client *, int, const char **); | |
51 | static int ms_kline(struct Client *, struct Client *, int, const char **); | |
52 | static int me_kline(struct Client *, struct Client *, int, const char **); | |
53 | static int mo_unkline(struct Client *, struct Client *, int, const char **); | |
54 | static int ms_unkline(struct Client *, struct Client *, int, const char **); | |
55 | static int me_unkline(struct Client *, struct Client *, int, const char **); | |
56 | ||
57 | struct Message kline_msgtab = { | |
58 | "KLINE", 0, 0, 0, MFLG_SLOW, | |
59 | {mg_unreg, mg_not_oper, {ms_kline, 5}, {ms_kline, 5}, {me_kline, 5}, {mo_kline, 3}} | |
60 | }; | |
61 | ||
62 | struct Message unkline_msgtab = { | |
63 | "UNKLINE", 0, 0, 0, MFLG_SLOW, | |
64 | {mg_unreg, mg_not_oper, {ms_unkline, 4}, {ms_unkline, 4}, {me_unkline, 3}, {mo_unkline, 2}} | |
65 | }; | |
66 | ||
67 | mapi_clist_av1 kline_clist[] = { &kline_msgtab, &unkline_msgtab, NULL }; | |
88a2a148 | 68 | DECLARE_MODULE_AV1(kline, NULL, NULL, kline_clist, NULL, NULL, "$Revision: 3466 $"); |
212380e3 AC |
69 | |
70 | /* Local function prototypes */ | |
71 | static int find_user_host(struct Client *source_p, const char *userhost, char *user, char *host); | |
72 | static int valid_comment(struct Client *source_p, char *comment); | |
73 | static int valid_user_host(struct Client *source_p, const char *user, const char *host); | |
74 | static int valid_wild_card(struct Client *source_p, const char *user, const char *host); | |
75 | ||
76 | static void handle_remote_kline(struct Client *source_p, int tkline_time, | |
77 | const char *user, const char *host, const char *reason); | |
78 | static void apply_kline(struct Client *source_p, struct ConfItem *aconf, | |
79 | const char *reason, const char *oper_reason, const char *current_date); | |
80 | static void apply_tkline(struct Client *source_p, struct ConfItem *aconf, | |
81 | const char *, const char *, const char *, int); | |
82 | static int already_placed_kline(struct Client *, const char *, const char *, int); | |
83 | ||
84 | static void handle_remote_unkline(struct Client *source_p, | |
85 | const char *user, const char *host); | |
40a1d446 | 86 | static void remove_permkline_match(struct Client *, struct ConfItem *); |
212380e3 | 87 | static int flush_write(struct Client *, FILE *, const char *, const char *); |
40a1d446 | 88 | static int remove_temp_kline(struct ConfItem *); |
212380e3 AC |
89 | |
90 | /* mo_kline() | |
91 | * | |
92 | * parv[1] - temp time or user@host | |
93 | * parv[2] - user@host, "ON", or reason | |
94 | * parv[3] - "ON", reason, or server to target | |
95 | * parv[4] - server to target, or reason | |
96 | * parv[5] - reason | |
97 | */ | |
98 | static int | |
99 | mo_kline(struct Client *client_p, struct Client *source_p, | |
100 | int parc, const char **parv) | |
101 | { | |
102 | char def[] = "No Reason"; | |
103 | char user[USERLEN + 2]; | |
104 | char host[HOSTLEN + 2]; | |
105 | char buffer[IRCD_BUFSIZE]; | |
106 | char *reason = def; | |
107 | char *oper_reason; | |
108 | const char *current_date; | |
109 | const char *target_server = NULL; | |
110 | struct ConfItem *aconf; | |
111 | int tkline_time = 0; | |
112 | int loc = 1; | |
113 | ||
114 | if(!IsOperK(source_p)) | |
115 | { | |
116 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
117 | me.name, source_p->name, "kline"); | |
118 | return 0; | |
119 | } | |
120 | ||
121 | if((tkline_time = valid_temp_time(parv[loc])) >= 0) | |
122 | loc++; | |
123 | /* we just set tkline_time to -1! */ | |
124 | else | |
125 | tkline_time = 0; | |
126 | ||
127 | if(find_user_host(source_p, parv[loc], user, host) == 0) | |
128 | return 0; | |
129 | ||
130 | loc++; | |
131 | ||
132 | if(parc >= loc+2 && !irccmp(parv[loc], "ON")) | |
133 | { | |
134 | if(!IsOperRemoteBan(source_p)) | |
135 | { | |
136 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
137 | me.name, source_p->name, "remoteban"); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | target_server = parv[loc+1]; | |
142 | loc += 2; | |
143 | } | |
144 | ||
145 | if(parc <= loc || EmptyString(parv[loc])) | |
146 | { | |
147 | sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), | |
148 | me.name, source_p->name, "KLINE"); | |
149 | return 0; | |
150 | } | |
151 | ||
152 | reason = LOCAL_COPY(parv[loc]); | |
153 | ||
154 | if(target_server != NULL) | |
155 | { | |
156 | propagate_generic(source_p, "KLINE", target_server, CAP_KLN, | |
157 | "%d %s %s :%s", | |
158 | tkline_time, user, host, reason); | |
159 | ||
160 | /* If we are sending it somewhere that doesnt include us, stop */ | |
161 | if(!match(target_server, me.name)) | |
162 | return 0; | |
163 | } | |
164 | /* if we have cluster servers, send it to them.. */ | |
165 | else if(dlink_list_length(&cluster_conf_list) > 0) | |
166 | cluster_generic(source_p, "KLINE", | |
167 | (tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE, CAP_KLN, | |
168 | "%lu %s %s :%s", | |
169 | tkline_time, user, host, reason); | |
170 | ||
171 | if(!valid_user_host(source_p, user, host) || | |
172 | !valid_wild_card(source_p, user, host) || | |
173 | !valid_comment(source_p, reason)) | |
174 | return 0; | |
175 | ||
176 | if(already_placed_kline(source_p, user, host, tkline_time)) | |
177 | return 0; | |
178 | ||
179 | set_time(); | |
180 | current_date = smalldate(); | |
181 | aconf = make_conf(); | |
182 | aconf->status = CONF_KILL; | |
183 | DupString(aconf->host, host); | |
184 | DupString(aconf->user, user); | |
185 | aconf->port = 0; | |
186 | ||
187 | /* Look for an oper reason */ | |
188 | if((oper_reason = strchr(reason, '|')) != NULL) | |
189 | { | |
190 | *oper_reason = '\0'; | |
191 | oper_reason++; | |
192 | ||
193 | if(!EmptyString(oper_reason)) | |
194 | DupString(aconf->spasswd, oper_reason); | |
195 | } | |
196 | ||
197 | if(tkline_time > 0) | |
198 | { | |
199 | ircsnprintf(buffer, sizeof(buffer), | |
200 | "Temporary K-line %d min. - %s (%s)", | |
201 | (int) (tkline_time / 60), reason, current_date); | |
202 | DupString(aconf->passwd, buffer); | |
203 | apply_tkline(source_p, aconf, reason, oper_reason, current_date, tkline_time); | |
204 | } | |
205 | else | |
206 | { | |
207 | ircsnprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date); | |
208 | DupString(aconf->passwd, buffer); | |
209 | apply_kline(source_p, aconf, reason, oper_reason, current_date); | |
210 | } | |
211 | ||
212 | if(ConfigFileEntry.kline_delay) | |
213 | { | |
214 | if(kline_queued == 0) | |
215 | { | |
216 | eventAddOnce("check_klines", check_klines_event, NULL, | |
217 | ConfigFileEntry.kline_delay); | |
218 | kline_queued = 1; | |
219 | } | |
220 | } | |
221 | else | |
222 | check_klines(); | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | /* ms_kline() | |
228 | * | |
229 | * parv[1] - server targeted at | |
230 | * parv[2] - tkline time (0 if perm) | |
231 | * parv[3] - user | |
232 | * parv[4] - host | |
233 | * parv[5] - reason | |
234 | */ | |
235 | static int | |
236 | ms_kline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
237 | { | |
238 | int tkline_time = atoi(parv[2]); | |
239 | ||
240 | /* 1.5-3 and earlier contains a bug that allows remote klines to be | |
241 | * sent with an empty reason field. This is a protocol violation, | |
242 | * but its not worth dropping the link over.. --anfl | |
243 | */ | |
244 | if(parc < 6 || EmptyString(parv[5])) | |
245 | return 0; | |
246 | ||
247 | propagate_generic(source_p, "KLINE", parv[1], CAP_KLN, | |
248 | "%d %s %s :%s", | |
249 | tkline_time, parv[3], parv[4], parv[5]); | |
250 | ||
251 | if(!match(parv[1], me.name)) | |
252 | return 0; | |
253 | ||
254 | if(!IsPerson(source_p)) | |
255 | return 0; | |
256 | ||
257 | handle_remote_kline(source_p, tkline_time, parv[3], parv[4], parv[5]); | |
258 | return 0; | |
259 | } | |
260 | ||
261 | static int | |
262 | me_kline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
263 | { | |
264 | /* <tkline_time> <user> <host> :<reason> */ | |
265 | if(!IsPerson(source_p)) | |
266 | return 0; | |
267 | ||
268 | handle_remote_kline(source_p, atoi(parv[1]), parv[2], parv[3], parv[4]); | |
269 | return 0; | |
270 | } | |
271 | ||
272 | static void | |
273 | handle_remote_kline(struct Client *source_p, int tkline_time, | |
274 | const char *user, const char *host, const char *kreason) | |
275 | { | |
276 | char buffer[BUFSIZE]; | |
277 | const char *current_date; | |
278 | char *reason = LOCAL_COPY(kreason); | |
279 | struct ConfItem *aconf = NULL; | |
280 | char *oper_reason; | |
281 | ||
282 | if(!find_shared_conf(source_p->username, source_p->host, | |
c88cdb00 | 283 | source_p->servptr->name, |
212380e3 AC |
284 | (tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE)) |
285 | return; | |
286 | ||
287 | if(!valid_user_host(source_p, user, host) || | |
288 | !valid_wild_card(source_p, user, host) || | |
289 | !valid_comment(source_p, reason)) | |
290 | return; | |
291 | ||
292 | if(already_placed_kline(source_p, user, host, tkline_time)) | |
293 | return; | |
294 | ||
295 | aconf = make_conf(); | |
296 | ||
297 | aconf->status = CONF_KILL; | |
298 | DupString(aconf->user, user); | |
299 | DupString(aconf->host, host); | |
300 | ||
301 | /* Look for an oper reason */ | |
302 | if((oper_reason = strchr(reason, '|')) != NULL) | |
303 | { | |
304 | *oper_reason = '\0'; | |
305 | oper_reason++; | |
306 | ||
307 | if(!EmptyString(oper_reason)) | |
308 | DupString(aconf->spasswd, oper_reason); | |
309 | } | |
310 | ||
311 | current_date = smalldate(); | |
312 | ||
313 | if(tkline_time > 0) | |
314 | { | |
315 | ircsnprintf(buffer, sizeof(buffer), | |
316 | "Temporary K-line %d min. - %s (%s)", | |
317 | (int) (tkline_time / 60), reason, current_date); | |
318 | DupString(aconf->passwd, buffer); | |
319 | apply_tkline(source_p, aconf, reason, oper_reason, current_date, tkline_time); | |
320 | } | |
321 | else | |
322 | { | |
323 | ircsnprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date); | |
324 | DupString(aconf->passwd, buffer); | |
325 | apply_kline(source_p, aconf, reason, oper_reason, current_date); | |
326 | } | |
327 | ||
328 | if(ConfigFileEntry.kline_delay) | |
329 | { | |
330 | if(kline_queued == 0) | |
331 | { | |
332 | eventAddOnce("check_klines", check_klines_event, NULL, | |
333 | ConfigFileEntry.kline_delay); | |
334 | kline_queued = 1; | |
335 | } | |
336 | } | |
337 | else | |
338 | check_klines(); | |
339 | ||
340 | return; | |
341 | } | |
342 | ||
343 | /* mo_unkline() | |
344 | * | |
345 | * parv[1] - kline to remove | |
346 | * parv[2] - optional "ON" | |
347 | * parv[3] - optional target server | |
348 | */ | |
349 | static int | |
350 | mo_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
351 | { | |
352 | const char *user; | |
353 | char *host; | |
354 | char splat[] = "*"; | |
355 | char *h = LOCAL_COPY(parv[1]); | |
40a1d446 | 356 | struct ConfItem *aconf; |
212380e3 AC |
357 | |
358 | if(!IsOperUnkline(source_p)) | |
359 | { | |
360 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
361 | me.name, source_p->name, "unkline"); | |
362 | return 0; | |
363 | } | |
364 | ||
365 | if((host = strchr(h, '@')) || *h == '*' || strchr(h, '.') || strchr(h, ':')) | |
366 | { | |
367 | /* Explicit user@host mask given */ | |
368 | ||
369 | if(host) /* Found user@host */ | |
370 | { | |
371 | *host++ = '\0'; | |
372 | ||
373 | /* check for @host */ | |
374 | if(*h) | |
375 | user = h; | |
376 | else | |
377 | user = splat; | |
378 | ||
379 | /* check for user@ */ | |
380 | if(!*host) | |
381 | host = splat; | |
382 | } | |
383 | else | |
384 | { | |
385 | user = splat; /* no @ found, assume its *@somehost */ | |
386 | host = h; | |
387 | } | |
388 | } | |
389 | else | |
390 | { | |
5366977b | 391 | sendto_one_notice(source_p, ":Invalid parameters"); |
212380e3 AC |
392 | return 0; |
393 | } | |
394 | ||
395 | /* possible remote kline.. */ | |
396 | if((parc > 3) && (irccmp(parv[2], "ON") == 0)) | |
397 | { | |
398 | if(!IsOperRemoteBan(source_p)) | |
399 | { | |
400 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
401 | me.name, source_p->name, "remoteban"); | |
402 | return 0; | |
403 | } | |
404 | ||
405 | propagate_generic(source_p, "UNKLINE", parv[3], CAP_UNKLN, | |
406 | "%s %s", user, host); | |
407 | ||
408 | if(match(parv[3], me.name) == 0) | |
409 | return 0; | |
410 | } | |
411 | else if(dlink_list_length(&cluster_conf_list) > 0) | |
412 | cluster_generic(source_p, "UNKLINE", SHARED_UNKLINE, CAP_UNKLN, | |
413 | "%s %s", user, host); | |
414 | ||
40a1d446 JT |
415 | aconf = find_exact_conf_by_address(host, CONF_KILL, user); |
416 | if(aconf == NULL) | |
417 | { | |
418 | sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host); | |
419 | return 0; | |
420 | } | |
421 | ||
422 | if(remove_temp_kline(aconf)) | |
212380e3 | 423 | { |
5366977b | 424 | sendto_one_notice(source_p, ":Un-klined [%s@%s] from temporary k-lines", user, host); |
212380e3 AC |
425 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
426 | "%s has removed the temporary K-Line for: [%s@%s]", | |
427 | get_oper_name(source_p), user, host); | |
428 | ilog(L_KLINE, "UK %s %s %s", | |
429 | get_oper_name(source_p), user, host); | |
430 | return 0; | |
431 | } | |
432 | ||
40a1d446 | 433 | remove_permkline_match(source_p, aconf); |
212380e3 AC |
434 | |
435 | return 0; | |
436 | } | |
437 | ||
438 | /* ms_unkline() | |
439 | * | |
440 | * parv[1] - target server | |
441 | * parv[2] - user to unkline | |
442 | * parv[3] - host to unkline | |
443 | */ | |
444 | static int | |
445 | ms_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
446 | { | |
447 | /* parv[0] parv[1] parv[2] parv[3] | |
448 | * oper target server user host */ | |
449 | propagate_generic(source_p, "UNKLINE", parv[1], CAP_UNKLN, | |
450 | "%s %s", parv[2], parv[3]); | |
451 | ||
452 | if(!match(parv[1], me.name)) | |
453 | return 0; | |
454 | ||
455 | if(!IsPerson(source_p)) | |
456 | return 0; | |
457 | ||
458 | handle_remote_unkline(source_p, parv[2], parv[3]); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | static int | |
463 | me_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
464 | { | |
465 | /* user host */ | |
466 | if(!IsPerson(source_p)) | |
467 | return 0; | |
468 | ||
469 | handle_remote_unkline(source_p, parv[1], parv[2]); | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static void | |
474 | handle_remote_unkline(struct Client *source_p, const char *user, const char *host) | |
475 | { | |
40a1d446 JT |
476 | struct ConfItem *aconf; |
477 | ||
212380e3 | 478 | if(!find_shared_conf(source_p->username, source_p->host, |
c88cdb00 | 479 | source_p->servptr->name, SHARED_UNKLINE)) |
212380e3 AC |
480 | return; |
481 | ||
40a1d446 JT |
482 | aconf = find_exact_conf_by_address(host, CONF_KILL, user); |
483 | if(aconf == NULL) | |
484 | { | |
485 | sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host); | |
486 | return; | |
487 | } | |
488 | ||
489 | if(remove_temp_kline(aconf)) | |
212380e3 AC |
490 | { |
491 | sendto_one_notice(source_p, | |
492 | ":Un-klined [%s@%s] from temporary k-lines", | |
493 | user, host); | |
494 | ||
495 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
496 | "%s has removed the temporary K-Line for: [%s@%s]", | |
497 | get_oper_name(source_p), user, host); | |
498 | ||
499 | ilog(L_KLINE, "UK %s %s %s", | |
500 | get_oper_name(source_p), user, host); | |
501 | return; | |
502 | } | |
503 | ||
40a1d446 | 504 | remove_permkline_match(source_p, aconf); |
212380e3 AC |
505 | } |
506 | ||
507 | /* apply_kline() | |
508 | * | |
509 | * inputs - | |
510 | * output - NONE | |
511 | * side effects - kline as given, is added to the hashtable | |
512 | * and conf file | |
513 | */ | |
514 | static void | |
515 | apply_kline(struct Client *source_p, struct ConfItem *aconf, | |
516 | const char *reason, const char *oper_reason, const char *current_date) | |
517 | { | |
518 | add_conf_by_address(aconf->host, CONF_KILL, aconf->user, aconf); | |
519 | write_confitem(KLINE_TYPE, source_p, aconf->user, aconf->host, | |
520 | reason, oper_reason, current_date, 0); | |
521 | } | |
522 | ||
523 | /* apply_tkline() | |
524 | * | |
525 | * inputs - | |
526 | * output - NONE | |
527 | * side effects - tkline as given is placed | |
528 | */ | |
529 | static void | |
530 | apply_tkline(struct Client *source_p, struct ConfItem *aconf, | |
531 | const char *reason, const char *oper_reason, const char *current_date, int tkline_time) | |
532 | { | |
533 | aconf->hold = CurrentTime + tkline_time; | |
534 | add_temp_kline(aconf); | |
535 | ||
536 | /* no oper reason.. */ | |
537 | if(EmptyString(oper_reason)) | |
538 | { | |
539 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
540 | "%s added temporary %d min. K-Line for [%s@%s] [%s]", | |
541 | get_oper_name(source_p), tkline_time / 60, | |
542 | aconf->user, aconf->host, reason); | |
543 | ilog(L_KLINE, "K %s %d %s %s %s", | |
544 | get_oper_name(source_p), tkline_time / 60, | |
545 | aconf->user, aconf->host, reason); | |
546 | } | |
547 | else | |
548 | { | |
549 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
550 | "%s added temporary %d min. K-Line for [%s@%s] [%s|%s]", | |
551 | get_oper_name(source_p), tkline_time / 60, | |
552 | aconf->user, aconf->host, reason, oper_reason); | |
553 | ilog(L_KLINE, "K %s %d %s %s %s|%s", | |
554 | get_oper_name(source_p), tkline_time / 60, | |
555 | aconf->user, aconf->host, reason, oper_reason); | |
556 | } | |
557 | ||
558 | sendto_one_notice(source_p, ":Added temporary %d min. K-Line [%s@%s]", | |
559 | tkline_time / 60, aconf->user, aconf->host); | |
560 | } | |
561 | ||
562 | /* find_user_host() | |
563 | * | |
564 | * inputs - client placing kline, user@host, user buffer, host buffer | |
565 | * output - 0 if not ok to kline, 1 to kline i.e. if valid user host | |
566 | * side effects - | |
567 | */ | |
568 | static int | |
569 | find_user_host(struct Client *source_p, const char *userhost, char *luser, char *lhost) | |
570 | { | |
571 | char *hostp; | |
572 | ||
573 | hostp = strchr(userhost, '@'); | |
574 | ||
575 | if(hostp != NULL) /* I'm a little user@host */ | |
576 | { | |
577 | *(hostp++) = '\0'; /* short and squat */ | |
578 | if(*userhost) | |
579 | strlcpy(luser, userhost, USERLEN + 1); /* here is my user */ | |
580 | else | |
581 | strcpy(luser, "*"); | |
582 | if(*hostp) | |
583 | strlcpy(lhost, hostp, HOSTLEN + 1); /* here is my host */ | |
584 | else | |
585 | strcpy(lhost, "*"); | |
586 | } | |
587 | else | |
588 | { | |
589 | /* no '@', no '.', so its not a user@host or host, therefore | |
590 | * its a nick, which support was removed for. | |
591 | */ | |
592 | if(strchr(userhost, '.') == NULL && strchr(userhost, ':') == NULL) | |
593 | return 0; | |
594 | ||
595 | luser[0] = '*'; /* no @ found, assume its *@somehost */ | |
596 | luser[1] = '\0'; | |
597 | strlcpy(lhost, userhost, HOSTLEN + 1); | |
598 | } | |
599 | ||
600 | return 1; | |
601 | } | |
602 | ||
603 | /* valid_user_host() | |
604 | * | |
605 | * inputs - user buffer, host buffer | |
606 | * output - 0 if invalid, 1 if valid | |
607 | * side effects - | |
608 | */ | |
609 | static int | |
610 | valid_user_host(struct Client *source_p, const char *luser, const char *lhost) | |
611 | { | |
612 | /* # is invalid, as is '!' (n!u@h kline) */ | |
613 | if(strchr(lhost, '#') || strchr(luser, '#') || strchr(luser, '!')) | |
614 | { | |
615 | sendto_one_notice(source_p, ":Invalid K-Line"); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | return 1; | |
620 | } | |
621 | ||
622 | /* valid_wild_card() | |
623 | * | |
624 | * input - user buffer, host buffer | |
625 | * output - 0 if invalid, 1 if valid | |
626 | * side effects - | |
627 | */ | |
628 | static int | |
629 | valid_wild_card(struct Client *source_p, const char *luser, const char *lhost) | |
630 | { | |
631 | const char *p; | |
632 | char tmpch; | |
633 | int nonwild = 0; | |
88a2a148 | 634 | int bitlen; |
212380e3 | 635 | |
598ebb42 JT |
636 | /* user has no wildcards, always accept -- jilles */ |
637 | if (!strchr(luser, '?') && !strchr(luser, '*')) | |
638 | return 1; | |
639 | ||
212380e3 AC |
640 | /* check there are enough non wildcard chars */ |
641 | p = luser; | |
642 | while ((tmpch = *p++)) | |
643 | { | |
644 | if(!IsKWildChar(tmpch)) | |
645 | { | |
646 | /* found enough chars, return */ | |
647 | if(++nonwild >= ConfigFileEntry.min_nonwildcard) | |
648 | return 1; | |
649 | } | |
650 | } | |
651 | ||
652 | /* try host, as user didnt contain enough */ | |
88a2a148 JT |
653 | /* special case for cidr masks -- jilles */ |
654 | if ((p = strrchr(lhost, '/')) != NULL && IsDigit(p[1])) | |
212380e3 | 655 | { |
88a2a148 JT |
656 | bitlen = atoi(p + 1); |
657 | /* much like non-cidr for ipv6, rather arbitrary for ipv4 */ | |
658 | if (bitlen > 0 && bitlen >= (strchr(lhost, ':') ? 4 * (ConfigFileEntry.min_nonwildcard - nonwild) : 6 - 2 * nonwild)) | |
659 | return 1; | |
660 | } | |
661 | else | |
662 | { | |
663 | p = lhost; | |
664 | while ((tmpch = *p++)) | |
665 | { | |
666 | if(!IsKWildChar(tmpch)) | |
667 | if(++nonwild >= ConfigFileEntry.min_nonwildcard) | |
668 | return 1; | |
669 | } | |
212380e3 AC |
670 | } |
671 | ||
672 | sendto_one_notice(source_p, | |
673 | ":Please include at least %d non-wildcard " | |
674 | "characters with the user@host", | |
675 | ConfigFileEntry.min_nonwildcard); | |
676 | return 0; | |
677 | } | |
678 | ||
679 | /* | |
680 | * valid_comment | |
681 | * inputs - pointer to client | |
682 | * - pointer to comment | |
683 | * output - 0 if no valid comment, 1 if valid | |
684 | * side effects - NONE | |
685 | */ | |
686 | static int | |
687 | valid_comment(struct Client *source_p, char *comment) | |
688 | { | |
689 | if(strchr(comment, '"')) | |
690 | { | |
691 | sendto_one_notice(source_p, ":Invalid character '\"' in comment"); | |
692 | return 0; | |
693 | } | |
694 | ||
61569b65 JT |
695 | if(strlen(comment) > BANREASONLEN) |
696 | comment[BANREASONLEN] = '\0'; | |
212380e3 AC |
697 | |
698 | return 1; | |
699 | } | |
700 | ||
701 | /* already_placed_kline() | |
702 | * | |
703 | * inputs - source to notify, user@host to check, tkline time | |
704 | * outputs - 1 if a perm kline or a tkline when a tkline is being | |
705 | * set exists, else 0 | |
706 | * side effects - notifies source_p kline exists | |
707 | */ | |
708 | /* Note: This currently works if the new K-line is a special case of an | |
709 | * existing K-line, but not the other way round. To do that we would | |
710 | * have to walk the hash and check every existing K-line. -A1kmm. | |
711 | */ | |
712 | static int | |
713 | already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int tkline) | |
714 | { | |
715 | const char *reason; | |
716 | struct irc_sockaddr_storage iphost, *piphost; | |
717 | struct ConfItem *aconf; | |
718 | int t; | |
719 | if(ConfigFileEntry.non_redundant_klines) | |
720 | { | |
721 | if((t = parse_netmask(lhost, (struct sockaddr *)&iphost, NULL)) != HM_HOST) | |
722 | { | |
723 | #ifdef IPV6 | |
724 | if(t == HM_IPV6) | |
725 | t = AF_INET6; | |
726 | else | |
727 | #endif | |
728 | t = AF_INET; | |
729 | ||
730 | piphost = &iphost; | |
731 | } | |
732 | else | |
733 | piphost = NULL; | |
734 | ||
735 | if((aconf = find_conf_by_address(lhost, NULL, NULL, (struct sockaddr *)piphost, CONF_KILL, t, luser))) | |
736 | { | |
737 | /* setting a tkline, or existing one is perm */ | |
738 | if(tkline || ((aconf->flags & CONF_FLAGS_TEMPORARY) == 0)) | |
739 | { | |
740 | reason = aconf->passwd ? aconf->passwd : "<No Reason>"; | |
741 | ||
742 | sendto_one_notice(source_p, | |
743 | ":[%s@%s] already K-Lined by [%s@%s] - %s", | |
744 | luser, lhost, aconf->user, | |
745 | aconf->host, reason); | |
746 | return 1; | |
747 | } | |
748 | } | |
749 | } | |
750 | ||
751 | return 0; | |
752 | } | |
753 | ||
754 | /* remove_permkline_match() | |
755 | * | |
756 | * hunts for a permanent kline, and removes it. | |
757 | */ | |
758 | static void | |
40a1d446 | 759 | remove_permkline_match(struct Client *source_p, struct ConfItem *aconf) |
212380e3 AC |
760 | { |
761 | FILE *in, *out; | |
762 | int pairme = 0; | |
763 | int error_on_write = NO; | |
764 | char buf[BUFSIZE]; | |
765 | char matchbuf[BUFSIZE]; | |
766 | char temppath[BUFSIZE]; | |
767 | const char *filename; | |
40a1d446 | 768 | const char *host, *user; |
212380e3 AC |
769 | mode_t oldumask; |
770 | int matchlen; | |
771 | ||
40a1d446 JT |
772 | host = aconf->host; |
773 | user = aconf->user; | |
774 | ||
212380e3 AC |
775 | ircsnprintf(temppath, sizeof(temppath), |
776 | "%s.tmp", ConfigFileEntry.klinefile); | |
777 | ||
778 | filename = get_conf_name(KLINE_TYPE); | |
779 | ||
780 | if((in = fopen(filename, "r")) == 0) | |
781 | { | |
782 | sendto_one_notice(source_p, ":Cannot open %s", filename); | |
783 | return; | |
784 | } | |
785 | ||
786 | oldumask = umask(0); | |
787 | if((out = fopen(temppath, "w")) == 0) | |
788 | { | |
789 | sendto_one_notice(source_p, ":Cannot open %s", temppath); | |
790 | fclose(in); | |
791 | umask(oldumask); | |
792 | return; | |
793 | } | |
794 | ||
795 | umask(oldumask); | |
796 | ||
797 | snprintf(matchbuf, sizeof(matchbuf), "\"%s\",\"%s\"", user, host); | |
798 | matchlen = strlen(matchbuf); | |
799 | ||
800 | while (fgets(buf, sizeof(buf), in)) | |
801 | { | |
802 | if(error_on_write) | |
803 | break; | |
804 | ||
805 | if(!strncasecmp(buf, matchbuf, matchlen)) | |
806 | { | |
807 | pairme++; | |
808 | break; | |
809 | } | |
810 | else | |
811 | error_on_write = flush_write(source_p, out, buf, temppath); | |
812 | } | |
813 | ||
814 | /* we dropped out of the loop early because we found a match, | |
815 | * to drop into this somewhat faster loop as we presume we'll never | |
816 | * have two matching klines --anfl | |
817 | */ | |
818 | if(pairme && !error_on_write) | |
819 | { | |
820 | while(fgets(buf, sizeof(buf), in)) | |
821 | { | |
822 | if(error_on_write) | |
823 | break; | |
824 | ||
825 | error_on_write = flush_write(source_p, out, buf, temppath); | |
826 | } | |
827 | } | |
828 | ||
829 | fclose(in); | |
830 | if (fclose(out)) | |
831 | error_on_write = YES; | |
832 | ||
833 | /* The result of the rename should be checked too... oh well */ | |
834 | /* If there was an error on a write above, then its been reported | |
835 | * and I am not going to trash the original kline /conf file | |
836 | */ | |
837 | if(error_on_write) | |
838 | { | |
839 | sendto_one_notice(source_p, ":Couldn't write temp kline file, aborted"); | |
840 | return; | |
841 | } | |
842 | else if(!pairme) | |
843 | { | |
40a1d446 | 844 | sendto_one_notice(source_p, ":Cannot find K-Line for %s@%s in file", |
212380e3 AC |
845 | user, host); |
846 | ||
847 | if(temppath != NULL) | |
848 | (void) unlink(temppath); | |
849 | ||
850 | return; | |
851 | } | |
852 | ||
853 | if (rename(temppath, filename)) | |
854 | { | |
855 | sendto_one_notice(source_p, ":Couldn't rename temp file, aborted"); | |
856 | return; | |
857 | } | |
212380e3 AC |
858 | |
859 | sendto_one_notice(source_p, ":K-Line for [%s@%s] is removed", | |
860 | user, host); | |
861 | ||
862 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
863 | "%s has removed the K-Line for: [%s@%s]", | |
864 | get_oper_name(source_p), user, host); | |
865 | ||
866 | ilog(L_KLINE, "UK %s %s %s", | |
867 | get_oper_name(source_p), user, host); | |
40a1d446 JT |
868 | |
869 | delete_one_address_conf(aconf->host, aconf); | |
870 | ||
212380e3 AC |
871 | return; |
872 | } | |
873 | ||
874 | /* | |
875 | * flush_write() | |
876 | * | |
877 | * inputs - pointer to client structure of oper requesting unkline | |
878 | * - out is the file descriptor | |
879 | * - buf is the buffer to write | |
880 | * - ntowrite is the expected number of character to be written | |
881 | * - temppath is the temporary file name to be written | |
882 | * output - YES for error on write | |
883 | * - NO for success | |
884 | * side effects - if successful, the buf is written to output file | |
885 | * if a write failure happesn, and the file pointed to | |
886 | * by temppath, if its non NULL, is removed. | |
887 | * | |
888 | * The idea here is, to be as robust as possible when writing to the | |
889 | * kline file. | |
890 | * | |
891 | * -Dianora | |
892 | */ | |
893 | ||
894 | static int | |
895 | flush_write(struct Client *source_p, FILE * out, const char *buf, const char *temppath) | |
896 | { | |
897 | int error_on_write = (fputs(buf, out) < 0) ? YES : NO; | |
898 | ||
899 | if(error_on_write) | |
900 | { | |
901 | sendto_one_notice(source_p, ":Unable to write to %s", | |
902 | temppath); | |
903 | if(temppath != NULL) | |
904 | (void) unlink(temppath); | |
905 | } | |
906 | return (error_on_write); | |
907 | } | |
908 | ||
909 | /* remove_temp_kline() | |
910 | * | |
911 | * inputs - username, hostname to unkline | |
912 | * outputs - | |
913 | * side effects - tries to unkline anything that matches | |
914 | */ | |
915 | static int | |
40a1d446 | 916 | remove_temp_kline(struct ConfItem *aconf) |
212380e3 | 917 | { |
212380e3 | 918 | dlink_node *ptr; |
212380e3 AC |
919 | int i; |
920 | ||
212380e3 AC |
921 | for (i = 0; i < LAST_TEMP_TYPE; i++) |
922 | { | |
923 | DLINK_FOREACH(ptr, temp_klines[i].head) | |
924 | { | |
40a1d446 | 925 | if (aconf == ptr->data) |
212380e3 | 926 | { |
40a1d446 JT |
927 | dlinkDestroy(ptr, &temp_klines[i]); |
928 | delete_one_address_conf(aconf->host, aconf); | |
929 | return YES; | |
212380e3 | 930 | } |
212380e3 AC |
931 | } |
932 | } | |
933 | ||
934 | return NO; | |
935 | } |