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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" | |
212380e3 AC |
28 | #include "channel.h" |
29 | #include "class.h" | |
30 | #include "client.h" | |
31 | #include "common.h" | |
4562c604 | 32 | #include "match.h" |
212380e3 AC |
33 | #include "ircd.h" |
34 | #include "hostmask.h" | |
35 | #include "numeric.h" | |
212380e3 AC |
36 | #include "s_conf.h" |
37 | #include "s_newconf.h" | |
4016731b | 38 | #include "logger.h" |
212380e3 AC |
39 | #include "send.h" |
40 | #include "hash.h" | |
41 | #include "s_serv.h" | |
42 | #include "msg.h" | |
43 | #include "parse.h" | |
44 | #include "modules.h" | |
35f6f850 | 45 | #include "reject.h" |
212380e3 AC |
46 | |
47 | static int mo_kline(struct Client *, struct Client *, int, const char **); | |
48 | static int ms_kline(struct Client *, struct Client *, int, const char **); | |
49 | static int me_kline(struct Client *, struct Client *, int, const char **); | |
50 | static int mo_unkline(struct Client *, struct Client *, int, const char **); | |
51 | static int ms_unkline(struct Client *, struct Client *, int, const char **); | |
52 | static int me_unkline(struct Client *, struct Client *, int, const char **); | |
53 | ||
54 | struct Message kline_msgtab = { | |
55 | "KLINE", 0, 0, 0, MFLG_SLOW, | |
56 | {mg_unreg, mg_not_oper, {ms_kline, 5}, {ms_kline, 5}, {me_kline, 5}, {mo_kline, 3}} | |
57 | }; | |
58 | ||
59 | struct Message unkline_msgtab = { | |
60 | "UNKLINE", 0, 0, 0, MFLG_SLOW, | |
61 | {mg_unreg, mg_not_oper, {ms_unkline, 4}, {ms_unkline, 4}, {me_unkline, 3}, {mo_unkline, 2}} | |
62 | }; | |
63 | ||
64 | mapi_clist_av1 kline_clist[] = { &kline_msgtab, &unkline_msgtab, NULL }; | |
88a2a148 | 65 | DECLARE_MODULE_AV1(kline, NULL, NULL, kline_clist, NULL, NULL, "$Revision: 3466 $"); |
212380e3 AC |
66 | |
67 | /* Local function prototypes */ | |
68 | static int find_user_host(struct Client *source_p, const char *userhost, char *user, char *host); | |
69 | static int valid_comment(struct Client *source_p, char *comment); | |
70 | static int valid_user_host(struct Client *source_p, const char *user, const char *host); | |
71 | static int valid_wild_card(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, const char *current_date); | |
77 | static void apply_tkline(struct Client *source_p, struct ConfItem *aconf, | |
78 | const char *, const char *, const char *, int); | |
79 | static int already_placed_kline(struct Client *, const char *, const char *, int); | |
80 | ||
81 | static void handle_remote_unkline(struct Client *source_p, | |
82 | const char *user, const char *host); | |
40a1d446 | 83 | static void remove_permkline_match(struct Client *, struct ConfItem *); |
212380e3 | 84 | static int flush_write(struct Client *, FILE *, const char *, const char *); |
d922dded | 85 | static int remove_temp_kline(struct Client *, struct ConfItem *); |
212380e3 AC |
86 | |
87 | /* mo_kline() | |
88 | * | |
89 | * parv[1] - temp time or user@host | |
90 | * parv[2] - user@host, "ON", or reason | |
91 | * parv[3] - "ON", reason, or server to target | |
92 | * parv[4] - server to target, or reason | |
93 | * parv[5] - reason | |
94 | */ | |
95 | static int | |
96 | mo_kline(struct Client *client_p, struct Client *source_p, | |
97 | int parc, const char **parv) | |
98 | { | |
99 | char def[] = "No Reason"; | |
100 | char user[USERLEN + 2]; | |
101 | char host[HOSTLEN + 2]; | |
102 | char buffer[IRCD_BUFSIZE]; | |
103 | char *reason = def; | |
104 | char *oper_reason; | |
105 | const char *current_date; | |
106 | const char *target_server = NULL; | |
107 | struct ConfItem *aconf; | |
108 | int tkline_time = 0; | |
109 | int loc = 1; | |
110 | ||
111 | if(!IsOperK(source_p)) | |
112 | { | |
113 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
114 | me.name, source_p->name, "kline"); | |
115 | return 0; | |
116 | } | |
117 | ||
118 | if((tkline_time = valid_temp_time(parv[loc])) >= 0) | |
119 | loc++; | |
120 | /* we just set tkline_time to -1! */ | |
121 | else | |
122 | tkline_time = 0; | |
123 | ||
124 | if(find_user_host(source_p, parv[loc], user, host) == 0) | |
125 | return 0; | |
126 | ||
127 | loc++; | |
128 | ||
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, "KLINE"); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | reason = LOCAL_COPY(parv[loc]); | |
150 | ||
151 | if(target_server != NULL) | |
152 | { | |
153 | propagate_generic(source_p, "KLINE", target_server, CAP_KLN, | |
154 | "%d %s %s :%s", | |
155 | tkline_time, user, host, reason); | |
156 | ||
157 | /* If we are sending it somewhere that doesnt include us, stop */ | |
158 | if(!match(target_server, me.name)) | |
159 | return 0; | |
160 | } | |
161 | /* if we have cluster servers, send it to them.. */ | |
5b96d9a6 | 162 | else if(rb_dlink_list_length(&cluster_conf_list) > 0) |
212380e3 AC |
163 | cluster_generic(source_p, "KLINE", |
164 | (tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE, CAP_KLN, | |
165 | "%lu %s %s :%s", | |
166 | tkline_time, user, host, reason); | |
167 | ||
168 | if(!valid_user_host(source_p, user, host) || | |
169 | !valid_wild_card(source_p, user, host) || | |
170 | !valid_comment(source_p, reason)) | |
171 | return 0; | |
172 | ||
173 | if(already_placed_kline(source_p, user, host, tkline_time)) | |
174 | return 0; | |
175 | ||
7df5fcfb | 176 | rb_set_time(); |
212380e3 AC |
177 | current_date = smalldate(); |
178 | aconf = make_conf(); | |
179 | aconf->status = CONF_KILL; | |
47a03750 VY |
180 | aconf->host = rb_strdup(host); |
181 | aconf->user = rb_strdup(user); | |
212380e3 AC |
182 | aconf->port = 0; |
183 | ||
184 | /* Look for an oper reason */ | |
185 | if((oper_reason = strchr(reason, '|')) != NULL) | |
186 | { | |
187 | *oper_reason = '\0'; | |
188 | oper_reason++; | |
189 | ||
190 | if(!EmptyString(oper_reason)) | |
47a03750 | 191 | aconf->spasswd = rb_strdup(oper_reason); |
212380e3 AC |
192 | } |
193 | ||
194 | if(tkline_time > 0) | |
195 | { | |
7cdb0a09 | 196 | rb_snprintf(buffer, sizeof(buffer), |
212380e3 AC |
197 | "Temporary K-line %d min. - %s (%s)", |
198 | (int) (tkline_time / 60), reason, current_date); | |
47a03750 | 199 | aconf->passwd = rb_strdup(buffer); |
212380e3 AC |
200 | apply_tkline(source_p, aconf, reason, oper_reason, current_date, tkline_time); |
201 | } | |
202 | else | |
203 | { | |
7cdb0a09 | 204 | rb_snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date); |
47a03750 | 205 | aconf->passwd = rb_strdup(buffer); |
212380e3 AC |
206 | apply_kline(source_p, aconf, reason, oper_reason, current_date); |
207 | } | |
208 | ||
209 | if(ConfigFileEntry.kline_delay) | |
210 | { | |
211 | if(kline_queued == 0) | |
212 | { | |
0e7cb7e6 | 213 | rb_event_addonce("check_klines", check_klines_event, NULL, |
212380e3 AC |
214 | ConfigFileEntry.kline_delay); |
215 | kline_queued = 1; | |
216 | } | |
217 | } | |
218 | else | |
219 | check_klines(); | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | /* ms_kline() | |
225 | * | |
226 | * parv[1] - server targeted at | |
227 | * parv[2] - tkline time (0 if perm) | |
228 | * parv[3] - user | |
229 | * parv[4] - host | |
230 | * parv[5] - reason | |
231 | */ | |
232 | static int | |
233 | ms_kline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
234 | { | |
235 | int tkline_time = atoi(parv[2]); | |
236 | ||
237 | /* 1.5-3 and earlier contains a bug that allows remote klines to be | |
238 | * sent with an empty reason field. This is a protocol violation, | |
239 | * but its not worth dropping the link over.. --anfl | |
240 | */ | |
241 | if(parc < 6 || EmptyString(parv[5])) | |
242 | return 0; | |
243 | ||
244 | propagate_generic(source_p, "KLINE", parv[1], CAP_KLN, | |
245 | "%d %s %s :%s", | |
246 | tkline_time, parv[3], parv[4], parv[5]); | |
247 | ||
248 | if(!match(parv[1], me.name)) | |
249 | return 0; | |
250 | ||
251 | if(!IsPerson(source_p)) | |
252 | return 0; | |
253 | ||
254 | handle_remote_kline(source_p, tkline_time, parv[3], parv[4], parv[5]); | |
255 | return 0; | |
256 | } | |
257 | ||
258 | static int | |
259 | me_kline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
260 | { | |
261 | /* <tkline_time> <user> <host> :<reason> */ | |
262 | if(!IsPerson(source_p)) | |
263 | return 0; | |
264 | ||
265 | handle_remote_kline(source_p, atoi(parv[1]), parv[2], parv[3], parv[4]); | |
266 | return 0; | |
267 | } | |
268 | ||
269 | static void | |
270 | handle_remote_kline(struct Client *source_p, int tkline_time, | |
271 | const char *user, const char *host, const char *kreason) | |
272 | { | |
273 | char buffer[BUFSIZE]; | |
274 | const char *current_date; | |
275 | char *reason = LOCAL_COPY(kreason); | |
276 | struct ConfItem *aconf = NULL; | |
277 | char *oper_reason; | |
278 | ||
279 | if(!find_shared_conf(source_p->username, source_p->host, | |
c88cdb00 | 280 | source_p->servptr->name, |
212380e3 AC |
281 | (tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE)) |
282 | return; | |
283 | ||
284 | if(!valid_user_host(source_p, user, host) || | |
285 | !valid_wild_card(source_p, user, host) || | |
286 | !valid_comment(source_p, reason)) | |
287 | return; | |
288 | ||
289 | if(already_placed_kline(source_p, user, host, tkline_time)) | |
290 | return; | |
291 | ||
292 | aconf = make_conf(); | |
293 | ||
294 | aconf->status = CONF_KILL; | |
47a03750 VY |
295 | aconf->user = rb_strdup(user); |
296 | aconf->host = rb_strdup(host); | |
212380e3 AC |
297 | |
298 | /* Look for an oper reason */ | |
299 | if((oper_reason = strchr(reason, '|')) != NULL) | |
300 | { | |
301 | *oper_reason = '\0'; | |
302 | oper_reason++; | |
303 | ||
304 | if(!EmptyString(oper_reason)) | |
47a03750 | 305 | aconf->spasswd = rb_strdup(oper_reason); |
212380e3 AC |
306 | } |
307 | ||
308 | current_date = smalldate(); | |
309 | ||
310 | if(tkline_time > 0) | |
311 | { | |
7cdb0a09 | 312 | rb_snprintf(buffer, sizeof(buffer), |
212380e3 AC |
313 | "Temporary K-line %d min. - %s (%s)", |
314 | (int) (tkline_time / 60), reason, current_date); | |
47a03750 | 315 | aconf->passwd = rb_strdup(buffer); |
212380e3 AC |
316 | apply_tkline(source_p, aconf, reason, oper_reason, current_date, tkline_time); |
317 | } | |
318 | else | |
319 | { | |
7cdb0a09 | 320 | rb_snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date); |
47a03750 | 321 | aconf->passwd = rb_strdup(buffer); |
212380e3 AC |
322 | apply_kline(source_p, aconf, reason, oper_reason, current_date); |
323 | } | |
324 | ||
325 | if(ConfigFileEntry.kline_delay) | |
326 | { | |
327 | if(kline_queued == 0) | |
328 | { | |
0e7cb7e6 | 329 | rb_event_addonce("check_klines", check_klines_event, NULL, |
212380e3 AC |
330 | ConfigFileEntry.kline_delay); |
331 | kline_queued = 1; | |
332 | } | |
333 | } | |
334 | else | |
335 | check_klines(); | |
336 | ||
337 | return; | |
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 int | |
347 | mo_unkline(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]); | |
40a1d446 | 353 | struct ConfItem *aconf; |
212380e3 AC |
354 | |
355 | if(!IsOperUnkline(source_p)) | |
356 | { | |
357 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
358 | me.name, source_p->name, "unkline"); | |
359 | return 0; | |
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 | { | |
5366977b | 388 | sendto_one_notice(source_p, ":Invalid parameters"); |
212380e3 AC |
389 | return 0; |
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 0; | |
400 | } | |
401 | ||
402 | propagate_generic(source_p, "UNKLINE", parv[3], CAP_UNKLN, | |
403 | "%s %s", user, host); | |
404 | ||
405 | if(match(parv[3], me.name) == 0) | |
406 | return 0; | |
407 | } | |
5b96d9a6 | 408 | else if(rb_dlink_list_length(&cluster_conf_list) > 0) |
212380e3 AC |
409 | cluster_generic(source_p, "UNKLINE", SHARED_UNKLINE, CAP_UNKLN, |
410 | "%s %s", user, host); | |
411 | ||
40a1d446 JT |
412 | aconf = find_exact_conf_by_address(host, CONF_KILL, user); |
413 | if(aconf == NULL) | |
414 | { | |
415 | sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host); | |
416 | return 0; | |
417 | } | |
418 | ||
d922dded | 419 | if(remove_temp_kline(source_p, aconf)) |
212380e3 | 420 | return 0; |
212380e3 | 421 | |
40a1d446 | 422 | remove_permkline_match(source_p, aconf); |
212380e3 AC |
423 | |
424 | return 0; | |
425 | } | |
426 | ||
427 | /* ms_unkline() | |
428 | * | |
429 | * parv[1] - target server | |
430 | * parv[2] - user to unkline | |
431 | * parv[3] - host to unkline | |
432 | */ | |
433 | static int | |
434 | ms_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
435 | { | |
436 | /* parv[0] parv[1] parv[2] parv[3] | |
437 | * oper target server user host */ | |
438 | propagate_generic(source_p, "UNKLINE", parv[1], CAP_UNKLN, | |
439 | "%s %s", parv[2], parv[3]); | |
440 | ||
441 | if(!match(parv[1], me.name)) | |
442 | return 0; | |
443 | ||
444 | if(!IsPerson(source_p)) | |
445 | return 0; | |
446 | ||
447 | handle_remote_unkline(source_p, parv[2], parv[3]); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | static int | |
452 | me_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
453 | { | |
454 | /* user host */ | |
455 | if(!IsPerson(source_p)) | |
456 | return 0; | |
457 | ||
458 | handle_remote_unkline(source_p, parv[1], parv[2]); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | static void | |
463 | handle_remote_unkline(struct Client *source_p, const char *user, const char *host) | |
464 | { | |
40a1d446 JT |
465 | struct ConfItem *aconf; |
466 | ||
212380e3 | 467 | if(!find_shared_conf(source_p->username, source_p->host, |
c88cdb00 | 468 | source_p->servptr->name, SHARED_UNKLINE)) |
212380e3 AC |
469 | return; |
470 | ||
40a1d446 JT |
471 | aconf = find_exact_conf_by_address(host, CONF_KILL, user); |
472 | if(aconf == NULL) | |
473 | { | |
474 | sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host); | |
475 | return; | |
476 | } | |
477 | ||
d922dded | 478 | if(remove_temp_kline(source_p, aconf)) |
212380e3 | 479 | return; |
212380e3 | 480 | |
40a1d446 | 481 | remove_permkline_match(source_p, aconf); |
212380e3 AC |
482 | } |
483 | ||
484 | /* apply_kline() | |
485 | * | |
486 | * inputs - | |
487 | * output - NONE | |
488 | * side effects - kline as given, is added to the hashtable | |
489 | * and conf file | |
490 | */ | |
491 | static void | |
492 | apply_kline(struct Client *source_p, struct ConfItem *aconf, | |
493 | const char *reason, const char *oper_reason, const char *current_date) | |
494 | { | |
495 | add_conf_by_address(aconf->host, CONF_KILL, aconf->user, aconf); | |
496 | write_confitem(KLINE_TYPE, source_p, aconf->user, aconf->host, | |
497 | reason, oper_reason, current_date, 0); | |
498 | } | |
499 | ||
500 | /* apply_tkline() | |
501 | * | |
502 | * inputs - | |
503 | * output - NONE | |
504 | * side effects - tkline as given is placed | |
505 | */ | |
506 | static void | |
507 | apply_tkline(struct Client *source_p, struct ConfItem *aconf, | |
508 | const char *reason, const char *oper_reason, const char *current_date, int tkline_time) | |
509 | { | |
e3354945 | 510 | aconf->hold = rb_current_time() + tkline_time; |
212380e3 AC |
511 | add_temp_kline(aconf); |
512 | ||
513 | /* no oper reason.. */ | |
514 | if(EmptyString(oper_reason)) | |
515 | { | |
516 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
517 | "%s added temporary %d min. K-Line for [%s@%s] [%s]", | |
518 | get_oper_name(source_p), tkline_time / 60, | |
519 | aconf->user, aconf->host, reason); | |
520 | ilog(L_KLINE, "K %s %d %s %s %s", | |
521 | get_oper_name(source_p), tkline_time / 60, | |
522 | aconf->user, aconf->host, reason); | |
523 | } | |
524 | else | |
525 | { | |
526 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
527 | "%s added temporary %d min. K-Line for [%s@%s] [%s|%s]", | |
528 | get_oper_name(source_p), tkline_time / 60, | |
529 | aconf->user, aconf->host, reason, oper_reason); | |
530 | ilog(L_KLINE, "K %s %d %s %s %s|%s", | |
531 | get_oper_name(source_p), tkline_time / 60, | |
532 | aconf->user, aconf->host, reason, oper_reason); | |
533 | } | |
534 | ||
535 | sendto_one_notice(source_p, ":Added temporary %d min. K-Line [%s@%s]", | |
536 | tkline_time / 60, aconf->user, aconf->host); | |
537 | } | |
538 | ||
539 | /* find_user_host() | |
540 | * | |
541 | * inputs - client placing kline, user@host, user buffer, host buffer | |
542 | * output - 0 if not ok to kline, 1 to kline i.e. if valid user host | |
543 | * side effects - | |
544 | */ | |
545 | static int | |
546 | find_user_host(struct Client *source_p, const char *userhost, char *luser, char *lhost) | |
547 | { | |
548 | char *hostp; | |
549 | ||
550 | hostp = strchr(userhost, '@'); | |
551 | ||
552 | if(hostp != NULL) /* I'm a little user@host */ | |
553 | { | |
554 | *(hostp++) = '\0'; /* short and squat */ | |
555 | if(*userhost) | |
f427c8b0 | 556 | rb_strlcpy(luser, userhost, USERLEN + 1); /* here is my user */ |
212380e3 AC |
557 | else |
558 | strcpy(luser, "*"); | |
559 | if(*hostp) | |
f427c8b0 | 560 | rb_strlcpy(lhost, hostp, HOSTLEN + 1); /* here is my host */ |
212380e3 AC |
561 | else |
562 | strcpy(lhost, "*"); | |
563 | } | |
564 | else | |
565 | { | |
566 | /* no '@', no '.', so its not a user@host or host, therefore | |
567 | * its a nick, which support was removed for. | |
568 | */ | |
569 | if(strchr(userhost, '.') == NULL && strchr(userhost, ':') == NULL) | |
af0ba24b JT |
570 | { |
571 | sendto_one_notice(source_p, ":K-Line must be a user@host or host"); | |
212380e3 | 572 | return 0; |
af0ba24b | 573 | } |
212380e3 AC |
574 | |
575 | luser[0] = '*'; /* no @ found, assume its *@somehost */ | |
576 | luser[1] = '\0'; | |
f427c8b0 | 577 | rb_strlcpy(lhost, userhost, HOSTLEN + 1); |
212380e3 AC |
578 | } |
579 | ||
580 | return 1; | |
581 | } | |
582 | ||
583 | /* valid_user_host() | |
584 | * | |
585 | * inputs - user buffer, host buffer | |
586 | * output - 0 if invalid, 1 if valid | |
587 | * side effects - | |
588 | */ | |
589 | static int | |
590 | valid_user_host(struct Client *source_p, const char *luser, const char *lhost) | |
591 | { | |
9c05c19c JT |
592 | /* # is invalid, as are '!' (n!u@h kline) and '@' (u@@h kline) */ |
593 | if(strchr(lhost, '#') || strchr(luser, '#') || strchr(luser, '!') || | |
594 | strchr(lhost, '@')) | |
212380e3 AC |
595 | { |
596 | sendto_one_notice(source_p, ":Invalid K-Line"); | |
597 | return 0; | |
598 | } | |
599 | ||
600 | return 1; | |
601 | } | |
602 | ||
603 | /* valid_wild_card() | |
604 | * | |
605 | * input - user buffer, host buffer | |
606 | * output - 0 if invalid, 1 if valid | |
607 | * side effects - | |
608 | */ | |
609 | static int | |
610 | valid_wild_card(struct Client *source_p, const char *luser, const char *lhost) | |
611 | { | |
612 | const char *p; | |
613 | char tmpch; | |
614 | int nonwild = 0; | |
88a2a148 | 615 | int bitlen; |
212380e3 | 616 | |
598ebb42 JT |
617 | /* user has no wildcards, always accept -- jilles */ |
618 | if (!strchr(luser, '?') && !strchr(luser, '*')) | |
619 | return 1; | |
620 | ||
212380e3 AC |
621 | /* check there are enough non wildcard chars */ |
622 | p = luser; | |
623 | while ((tmpch = *p++)) | |
624 | { | |
625 | if(!IsKWildChar(tmpch)) | |
626 | { | |
627 | /* found enough chars, return */ | |
628 | if(++nonwild >= ConfigFileEntry.min_nonwildcard) | |
629 | return 1; | |
630 | } | |
631 | } | |
632 | ||
633 | /* try host, as user didnt contain enough */ | |
88a2a148 JT |
634 | /* special case for cidr masks -- jilles */ |
635 | if ((p = strrchr(lhost, '/')) != NULL && IsDigit(p[1])) | |
212380e3 | 636 | { |
88a2a148 JT |
637 | bitlen = atoi(p + 1); |
638 | /* much like non-cidr for ipv6, rather arbitrary for ipv4 */ | |
639 | if (bitlen > 0 && bitlen >= (strchr(lhost, ':') ? 4 * (ConfigFileEntry.min_nonwildcard - nonwild) : 6 - 2 * nonwild)) | |
640 | return 1; | |
641 | } | |
642 | else | |
643 | { | |
644 | p = lhost; | |
645 | while ((tmpch = *p++)) | |
646 | { | |
647 | if(!IsKWildChar(tmpch)) | |
648 | if(++nonwild >= ConfigFileEntry.min_nonwildcard) | |
649 | return 1; | |
650 | } | |
212380e3 AC |
651 | } |
652 | ||
653 | sendto_one_notice(source_p, | |
654 | ":Please include at least %d non-wildcard " | |
655 | "characters with the user@host", | |
656 | ConfigFileEntry.min_nonwildcard); | |
657 | return 0; | |
658 | } | |
659 | ||
660 | /* | |
661 | * valid_comment | |
662 | * inputs - pointer to client | |
663 | * - pointer to comment | |
664 | * output - 0 if no valid comment, 1 if valid | |
665 | * side effects - NONE | |
666 | */ | |
667 | static int | |
668 | valid_comment(struct Client *source_p, char *comment) | |
669 | { | |
670 | if(strchr(comment, '"')) | |
671 | { | |
672 | sendto_one_notice(source_p, ":Invalid character '\"' in comment"); | |
673 | return 0; | |
674 | } | |
675 | ||
61569b65 JT |
676 | if(strlen(comment) > BANREASONLEN) |
677 | comment[BANREASONLEN] = '\0'; | |
212380e3 AC |
678 | |
679 | return 1; | |
680 | } | |
681 | ||
682 | /* already_placed_kline() | |
683 | * | |
684 | * inputs - source to notify, user@host to check, tkline time | |
685 | * outputs - 1 if a perm kline or a tkline when a tkline is being | |
686 | * set exists, else 0 | |
687 | * side effects - notifies source_p kline exists | |
688 | */ | |
689 | /* Note: This currently works if the new K-line is a special case of an | |
690 | * existing K-line, but not the other way round. To do that we would | |
691 | * have to walk the hash and check every existing K-line. -A1kmm. | |
692 | */ | |
693 | static int | |
694 | already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int tkline) | |
695 | { | |
7f27e316 | 696 | const char *reason, *p; |
e7046ee5 | 697 | struct rb_sockaddr_storage iphost, *piphost; |
212380e3 | 698 | struct ConfItem *aconf; |
7f27e316 JT |
699 | int t, bits; |
700 | ||
701 | aconf = find_exact_conf_by_address(lhost, CONF_KILL, luser); | |
702 | if (aconf == NULL && ConfigFileEntry.non_redundant_klines) | |
212380e3 | 703 | { |
7f27e316 JT |
704 | bits = 0; |
705 | if((t = parse_netmask(lhost, (struct sockaddr *)&iphost, &bits)) != HM_HOST) | |
212380e3 | 706 | { |
ccda6e3f | 707 | #ifdef RB_IPV6 |
212380e3 AC |
708 | if(t == HM_IPV6) |
709 | t = AF_INET6; | |
710 | else | |
711 | #endif | |
712 | t = AF_INET; | |
713 | ||
714 | piphost = &iphost; | |
715 | } | |
716 | else | |
717 | piphost = NULL; | |
718 | ||
7f27e316 JT |
719 | aconf = find_conf_by_address(lhost, NULL, NULL, (struct sockaddr *)piphost, CONF_KILL, t, luser); |
720 | if (aconf != NULL) | |
212380e3 | 721 | { |
7f27e316 JT |
722 | /* The above was really a lookup of a single IP, |
723 | * so check if the new kline is wider than the | |
724 | * existing one. | |
725 | * -- jilles | |
726 | */ | |
727 | p = strchr(aconf->host, '/'); | |
728 | if (bits > 0 && (p == NULL || bits < atoi(p + 1))) | |
729 | aconf = NULL; | |
730 | } | |
731 | } | |
732 | if (aconf != NULL) | |
733 | { | |
734 | /* setting a tkline, or existing one is perm */ | |
735 | if(tkline || ((aconf->flags & CONF_FLAGS_TEMPORARY) == 0)) | |
736 | { | |
737 | reason = aconf->passwd ? aconf->passwd : "<No Reason>"; | |
738 | ||
739 | sendto_one_notice(source_p, | |
740 | ":[%s@%s] already K-Lined by [%s@%s] - %s", | |
741 | luser, lhost, aconf->user, | |
742 | aconf->host, reason); | |
743 | return 1; | |
212380e3 AC |
744 | } |
745 | } | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | /* remove_permkline_match() | |
751 | * | |
752 | * hunts for a permanent kline, and removes it. | |
753 | */ | |
754 | static void | |
40a1d446 | 755 | remove_permkline_match(struct Client *source_p, struct ConfItem *aconf) |
212380e3 AC |
756 | { |
757 | FILE *in, *out; | |
758 | int pairme = 0; | |
759 | int error_on_write = NO; | |
760 | char buf[BUFSIZE]; | |
761 | char matchbuf[BUFSIZE]; | |
762 | char temppath[BUFSIZE]; | |
763 | const char *filename; | |
40a1d446 | 764 | const char *host, *user; |
212380e3 AC |
765 | mode_t oldumask; |
766 | int matchlen; | |
767 | ||
40a1d446 JT |
768 | host = aconf->host; |
769 | user = aconf->user; | |
770 | ||
7cdb0a09 | 771 | rb_snprintf(temppath, sizeof(temppath), |
212380e3 AC |
772 | "%s.tmp", ConfigFileEntry.klinefile); |
773 | ||
774 | filename = get_conf_name(KLINE_TYPE); | |
775 | ||
776 | if((in = fopen(filename, "r")) == 0) | |
777 | { | |
778 | sendto_one_notice(source_p, ":Cannot open %s", filename); | |
779 | return; | |
780 | } | |
781 | ||
782 | oldumask = umask(0); | |
783 | if((out = fopen(temppath, "w")) == 0) | |
784 | { | |
785 | sendto_one_notice(source_p, ":Cannot open %s", temppath); | |
786 | fclose(in); | |
787 | umask(oldumask); | |
788 | return; | |
789 | } | |
790 | ||
791 | umask(oldumask); | |
792 | ||
793 | snprintf(matchbuf, sizeof(matchbuf), "\"%s\",\"%s\"", user, host); | |
794 | matchlen = strlen(matchbuf); | |
795 | ||
796 | while (fgets(buf, sizeof(buf), in)) | |
797 | { | |
798 | if(error_on_write) | |
799 | break; | |
800 | ||
801 | if(!strncasecmp(buf, matchbuf, matchlen)) | |
802 | { | |
803 | pairme++; | |
804 | break; | |
805 | } | |
806 | else | |
807 | error_on_write = flush_write(source_p, out, buf, temppath); | |
808 | } | |
809 | ||
810 | /* we dropped out of the loop early because we found a match, | |
811 | * to drop into this somewhat faster loop as we presume we'll never | |
812 | * have two matching klines --anfl | |
813 | */ | |
814 | if(pairme && !error_on_write) | |
815 | { | |
816 | while(fgets(buf, sizeof(buf), in)) | |
817 | { | |
818 | if(error_on_write) | |
819 | break; | |
820 | ||
821 | error_on_write = flush_write(source_p, out, buf, temppath); | |
822 | } | |
823 | } | |
824 | ||
825 | fclose(in); | |
826 | if (fclose(out)) | |
827 | error_on_write = YES; | |
828 | ||
829 | /* The result of the rename should be checked too... oh well */ | |
830 | /* If there was an error on a write above, then its been reported | |
831 | * and I am not going to trash the original kline /conf file | |
832 | */ | |
833 | if(error_on_write) | |
834 | { | |
835 | sendto_one_notice(source_p, ":Couldn't write temp kline file, aborted"); | |
836 | return; | |
837 | } | |
838 | else if(!pairme) | |
839 | { | |
40a1d446 | 840 | sendto_one_notice(source_p, ":Cannot find K-Line for %s@%s in file", |
212380e3 AC |
841 | user, host); |
842 | ||
843 | if(temppath != NULL) | |
844 | (void) unlink(temppath); | |
845 | ||
846 | return; | |
847 | } | |
848 | ||
849 | if (rename(temppath, filename)) | |
850 | { | |
851 | sendto_one_notice(source_p, ":Couldn't rename temp file, aborted"); | |
852 | return; | |
853 | } | |
212380e3 AC |
854 | |
855 | sendto_one_notice(source_p, ":K-Line for [%s@%s] is removed", | |
856 | user, host); | |
857 | ||
858 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
859 | "%s has removed the K-Line for: [%s@%s]", | |
860 | get_oper_name(source_p), user, host); | |
861 | ||
862 | ilog(L_KLINE, "UK %s %s %s", | |
863 | get_oper_name(source_p), user, host); | |
40a1d446 | 864 | |
54ac8b60 | 865 | remove_reject_mask(aconf->user, aconf->host); |
40a1d446 JT |
866 | delete_one_address_conf(aconf->host, aconf); |
867 | ||
212380e3 AC |
868 | return; |
869 | } | |
870 | ||
871 | /* | |
872 | * flush_write() | |
873 | * | |
874 | * inputs - pointer to client structure of oper requesting unkline | |
875 | * - out is the file descriptor | |
876 | * - buf is the buffer to write | |
877 | * - ntowrite is the expected number of character to be written | |
878 | * - temppath is the temporary file name to be written | |
879 | * output - YES for error on write | |
880 | * - NO for success | |
881 | * side effects - if successful, the buf is written to output file | |
882 | * if a write failure happesn, and the file pointed to | |
883 | * by temppath, if its non NULL, is removed. | |
884 | * | |
885 | * The idea here is, to be as robust as possible when writing to the | |
886 | * kline file. | |
887 | * | |
888 | * -Dianora | |
889 | */ | |
890 | ||
891 | static int | |
892 | flush_write(struct Client *source_p, FILE * out, const char *buf, const char *temppath) | |
893 | { | |
894 | int error_on_write = (fputs(buf, out) < 0) ? YES : NO; | |
895 | ||
896 | if(error_on_write) | |
897 | { | |
898 | sendto_one_notice(source_p, ":Unable to write to %s", | |
899 | temppath); | |
900 | if(temppath != NULL) | |
901 | (void) unlink(temppath); | |
902 | } | |
903 | return (error_on_write); | |
904 | } | |
905 | ||
906 | /* remove_temp_kline() | |
907 | * | |
908 | * inputs - username, hostname to unkline | |
909 | * outputs - | |
910 | * side effects - tries to unkline anything that matches | |
911 | */ | |
912 | static int | |
d922dded | 913 | remove_temp_kline(struct Client *source_p, struct ConfItem *aconf) |
212380e3 | 914 | { |
5b96d9a6 | 915 | rb_dlink_node *ptr; |
212380e3 AC |
916 | int i; |
917 | ||
212380e3 AC |
918 | for (i = 0; i < LAST_TEMP_TYPE; i++) |
919 | { | |
5b96d9a6 | 920 | RB_DLINK_FOREACH(ptr, temp_klines[i].head) |
212380e3 | 921 | { |
40a1d446 | 922 | if (aconf == ptr->data) |
212380e3 | 923 | { |
d922dded JT |
924 | sendto_one_notice(source_p, |
925 | ":Un-klined [%s@%s] from temporary k-lines", | |
926 | aconf->user, aconf->host); | |
927 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
928 | "%s has removed the temporary K-Line for: [%s@%s]", | |
929 | get_oper_name(source_p), aconf->user, aconf->host); | |
930 | ||
931 | ilog(L_KLINE, "UK %s %s %s", | |
932 | get_oper_name(source_p), | |
933 | aconf->user, aconf->host); | |
555ac41f | 934 | rb_dlinkDestroy(ptr, &temp_klines[i]); |
54ac8b60 | 935 | remove_reject_mask(aconf->user, aconf->host); |
40a1d446 JT |
936 | delete_one_address_conf(aconf->host, aconf); |
937 | return YES; | |
212380e3 | 938 | } |
212380e3 AC |
939 | } |
940 | } | |
941 | ||
942 | return NO; | |
943 | } |