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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" | |
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); | |
86 | static void remove_permkline_match(struct Client *, const char *, const char *); | |
87 | static int flush_write(struct Client *, FILE *, const char *, const char *); | |
88 | static int remove_temp_kline(const char *, const char *); | |
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, | |
283 | source_p->user->server, | |
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]); | |
356 | ||
357 | if(!IsOperUnkline(source_p)) | |
358 | { | |
359 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
360 | me.name, source_p->name, "unkline"); | |
361 | return 0; | |
362 | } | |
363 | ||
364 | if((host = strchr(h, '@')) || *h == '*' || strchr(h, '.') || strchr(h, ':')) | |
365 | { | |
366 | /* Explicit user@host mask given */ | |
367 | ||
368 | if(host) /* Found user@host */ | |
369 | { | |
370 | *host++ = '\0'; | |
371 | ||
372 | /* check for @host */ | |
373 | if(*h) | |
374 | user = h; | |
375 | else | |
376 | user = splat; | |
377 | ||
378 | /* check for user@ */ | |
379 | if(!*host) | |
380 | host = splat; | |
381 | } | |
382 | else | |
383 | { | |
384 | user = splat; /* no @ found, assume its *@somehost */ | |
385 | host = h; | |
386 | } | |
387 | } | |
388 | else | |
389 | { | |
5366977b | 390 | sendto_one_notice(source_p, ":Invalid parameters"); |
212380e3 AC |
391 | return 0; |
392 | } | |
393 | ||
394 | /* possible remote kline.. */ | |
395 | if((parc > 3) && (irccmp(parv[2], "ON") == 0)) | |
396 | { | |
397 | if(!IsOperRemoteBan(source_p)) | |
398 | { | |
399 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
400 | me.name, source_p->name, "remoteban"); | |
401 | return 0; | |
402 | } | |
403 | ||
404 | propagate_generic(source_p, "UNKLINE", parv[3], CAP_UNKLN, | |
405 | "%s %s", user, host); | |
406 | ||
407 | if(match(parv[3], me.name) == 0) | |
408 | return 0; | |
409 | } | |
410 | else if(dlink_list_length(&cluster_conf_list) > 0) | |
411 | cluster_generic(source_p, "UNKLINE", SHARED_UNKLINE, CAP_UNKLN, | |
412 | "%s %s", user, host); | |
413 | ||
414 | if(remove_temp_kline(user, host)) | |
415 | { | |
5366977b | 416 | sendto_one_notice(source_p, ":Un-klined [%s@%s] from temporary k-lines", user, host); |
212380e3 AC |
417 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
418 | "%s has removed the temporary K-Line for: [%s@%s]", | |
419 | get_oper_name(source_p), user, host); | |
420 | ilog(L_KLINE, "UK %s %s %s", | |
421 | get_oper_name(source_p), user, host); | |
422 | return 0; | |
423 | } | |
424 | ||
425 | remove_permkline_match(source_p, host, user); | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
430 | /* ms_unkline() | |
431 | * | |
432 | * parv[1] - target server | |
433 | * parv[2] - user to unkline | |
434 | * parv[3] - host to unkline | |
435 | */ | |
436 | static int | |
437 | ms_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
438 | { | |
439 | /* parv[0] parv[1] parv[2] parv[3] | |
440 | * oper target server user host */ | |
441 | propagate_generic(source_p, "UNKLINE", parv[1], CAP_UNKLN, | |
442 | "%s %s", parv[2], parv[3]); | |
443 | ||
444 | if(!match(parv[1], me.name)) | |
445 | return 0; | |
446 | ||
447 | if(!IsPerson(source_p)) | |
448 | return 0; | |
449 | ||
450 | handle_remote_unkline(source_p, parv[2], parv[3]); | |
451 | return 0; | |
452 | } | |
453 | ||
454 | static int | |
455 | me_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
456 | { | |
457 | /* user host */ | |
458 | if(!IsPerson(source_p)) | |
459 | return 0; | |
460 | ||
461 | handle_remote_unkline(source_p, parv[1], parv[2]); | |
462 | return 0; | |
463 | } | |
464 | ||
465 | static void | |
466 | handle_remote_unkline(struct Client *source_p, const char *user, const char *host) | |
467 | { | |
468 | if(!find_shared_conf(source_p->username, source_p->host, | |
469 | source_p->user->server, SHARED_UNKLINE)) | |
470 | return; | |
471 | ||
472 | if(remove_temp_kline(user, host)) | |
473 | { | |
474 | sendto_one_notice(source_p, | |
475 | ":Un-klined [%s@%s] from temporary k-lines", | |
476 | user, host); | |
477 | ||
478 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
479 | "%s has removed the temporary K-Line for: [%s@%s]", | |
480 | get_oper_name(source_p), user, host); | |
481 | ||
482 | ilog(L_KLINE, "UK %s %s %s", | |
483 | get_oper_name(source_p), user, host); | |
484 | return; | |
485 | } | |
486 | ||
487 | remove_permkline_match(source_p, host, user); | |
488 | } | |
489 | ||
490 | /* apply_kline() | |
491 | * | |
492 | * inputs - | |
493 | * output - NONE | |
494 | * side effects - kline as given, is added to the hashtable | |
495 | * and conf file | |
496 | */ | |
497 | static void | |
498 | apply_kline(struct Client *source_p, struct ConfItem *aconf, | |
499 | const char *reason, const char *oper_reason, const char *current_date) | |
500 | { | |
501 | add_conf_by_address(aconf->host, CONF_KILL, aconf->user, aconf); | |
502 | write_confitem(KLINE_TYPE, source_p, aconf->user, aconf->host, | |
503 | reason, oper_reason, current_date, 0); | |
504 | } | |
505 | ||
506 | /* apply_tkline() | |
507 | * | |
508 | * inputs - | |
509 | * output - NONE | |
510 | * side effects - tkline as given is placed | |
511 | */ | |
512 | static void | |
513 | apply_tkline(struct Client *source_p, struct ConfItem *aconf, | |
514 | const char *reason, const char *oper_reason, const char *current_date, int tkline_time) | |
515 | { | |
516 | aconf->hold = CurrentTime + tkline_time; | |
517 | add_temp_kline(aconf); | |
518 | ||
519 | /* no oper reason.. */ | |
520 | if(EmptyString(oper_reason)) | |
521 | { | |
522 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
523 | "%s added temporary %d min. K-Line for [%s@%s] [%s]", | |
524 | get_oper_name(source_p), tkline_time / 60, | |
525 | aconf->user, aconf->host, reason); | |
526 | ilog(L_KLINE, "K %s %d %s %s %s", | |
527 | get_oper_name(source_p), tkline_time / 60, | |
528 | aconf->user, aconf->host, reason); | |
529 | } | |
530 | else | |
531 | { | |
532 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
533 | "%s added temporary %d min. K-Line for [%s@%s] [%s|%s]", | |
534 | get_oper_name(source_p), tkline_time / 60, | |
535 | aconf->user, aconf->host, reason, oper_reason); | |
536 | ilog(L_KLINE, "K %s %d %s %s %s|%s", | |
537 | get_oper_name(source_p), tkline_time / 60, | |
538 | aconf->user, aconf->host, reason, oper_reason); | |
539 | } | |
540 | ||
541 | sendto_one_notice(source_p, ":Added temporary %d min. K-Line [%s@%s]", | |
542 | tkline_time / 60, aconf->user, aconf->host); | |
543 | } | |
544 | ||
545 | /* find_user_host() | |
546 | * | |
547 | * inputs - client placing kline, user@host, user buffer, host buffer | |
548 | * output - 0 if not ok to kline, 1 to kline i.e. if valid user host | |
549 | * side effects - | |
550 | */ | |
551 | static int | |
552 | find_user_host(struct Client *source_p, const char *userhost, char *luser, char *lhost) | |
553 | { | |
554 | char *hostp; | |
555 | ||
556 | hostp = strchr(userhost, '@'); | |
557 | ||
558 | if(hostp != NULL) /* I'm a little user@host */ | |
559 | { | |
560 | *(hostp++) = '\0'; /* short and squat */ | |
561 | if(*userhost) | |
562 | strlcpy(luser, userhost, USERLEN + 1); /* here is my user */ | |
563 | else | |
564 | strcpy(luser, "*"); | |
565 | if(*hostp) | |
566 | strlcpy(lhost, hostp, HOSTLEN + 1); /* here is my host */ | |
567 | else | |
568 | strcpy(lhost, "*"); | |
569 | } | |
570 | else | |
571 | { | |
572 | /* no '@', no '.', so its not a user@host or host, therefore | |
573 | * its a nick, which support was removed for. | |
574 | */ | |
575 | if(strchr(userhost, '.') == NULL && strchr(userhost, ':') == NULL) | |
576 | return 0; | |
577 | ||
578 | luser[0] = '*'; /* no @ found, assume its *@somehost */ | |
579 | luser[1] = '\0'; | |
580 | strlcpy(lhost, userhost, HOSTLEN + 1); | |
581 | } | |
582 | ||
583 | return 1; | |
584 | } | |
585 | ||
586 | /* valid_user_host() | |
587 | * | |
588 | * inputs - user buffer, host buffer | |
589 | * output - 0 if invalid, 1 if valid | |
590 | * side effects - | |
591 | */ | |
592 | static int | |
593 | valid_user_host(struct Client *source_p, const char *luser, const char *lhost) | |
594 | { | |
595 | /* # is invalid, as is '!' (n!u@h kline) */ | |
596 | if(strchr(lhost, '#') || strchr(luser, '#') || strchr(luser, '!')) | |
597 | { | |
598 | sendto_one_notice(source_p, ":Invalid K-Line"); | |
599 | return 0; | |
600 | } | |
601 | ||
602 | return 1; | |
603 | } | |
604 | ||
605 | /* valid_wild_card() | |
606 | * | |
607 | * input - user buffer, host buffer | |
608 | * output - 0 if invalid, 1 if valid | |
609 | * side effects - | |
610 | */ | |
611 | static int | |
612 | valid_wild_card(struct Client *source_p, const char *luser, const char *lhost) | |
613 | { | |
614 | const char *p; | |
615 | char tmpch; | |
616 | int nonwild = 0; | |
88a2a148 | 617 | int bitlen; |
212380e3 | 618 | |
598ebb42 JT |
619 | /* user has no wildcards, always accept -- jilles */ |
620 | if (!strchr(luser, '?') && !strchr(luser, '*')) | |
621 | return 1; | |
622 | ||
212380e3 AC |
623 | /* check there are enough non wildcard chars */ |
624 | p = luser; | |
625 | while ((tmpch = *p++)) | |
626 | { | |
627 | if(!IsKWildChar(tmpch)) | |
628 | { | |
629 | /* found enough chars, return */ | |
630 | if(++nonwild >= ConfigFileEntry.min_nonwildcard) | |
631 | return 1; | |
632 | } | |
633 | } | |
634 | ||
635 | /* try host, as user didnt contain enough */ | |
88a2a148 JT |
636 | /* special case for cidr masks -- jilles */ |
637 | if ((p = strrchr(lhost, '/')) != NULL && IsDigit(p[1])) | |
212380e3 | 638 | { |
88a2a148 JT |
639 | bitlen = atoi(p + 1); |
640 | /* much like non-cidr for ipv6, rather arbitrary for ipv4 */ | |
641 | if (bitlen > 0 && bitlen >= (strchr(lhost, ':') ? 4 * (ConfigFileEntry.min_nonwildcard - nonwild) : 6 - 2 * nonwild)) | |
642 | return 1; | |
643 | } | |
644 | else | |
645 | { | |
646 | p = lhost; | |
647 | while ((tmpch = *p++)) | |
648 | { | |
649 | if(!IsKWildChar(tmpch)) | |
650 | if(++nonwild >= ConfigFileEntry.min_nonwildcard) | |
651 | return 1; | |
652 | } | |
212380e3 AC |
653 | } |
654 | ||
655 | sendto_one_notice(source_p, | |
656 | ":Please include at least %d non-wildcard " | |
657 | "characters with the user@host", | |
658 | ConfigFileEntry.min_nonwildcard); | |
659 | return 0; | |
660 | } | |
661 | ||
662 | /* | |
663 | * valid_comment | |
664 | * inputs - pointer to client | |
665 | * - pointer to comment | |
666 | * output - 0 if no valid comment, 1 if valid | |
667 | * side effects - NONE | |
668 | */ | |
669 | static int | |
670 | valid_comment(struct Client *source_p, char *comment) | |
671 | { | |
672 | if(strchr(comment, '"')) | |
673 | { | |
674 | sendto_one_notice(source_p, ":Invalid character '\"' in comment"); | |
675 | return 0; | |
676 | } | |
677 | ||
61569b65 JT |
678 | if(strlen(comment) > BANREASONLEN) |
679 | comment[BANREASONLEN] = '\0'; | |
212380e3 AC |
680 | |
681 | return 1; | |
682 | } | |
683 | ||
684 | /* already_placed_kline() | |
685 | * | |
686 | * inputs - source to notify, user@host to check, tkline time | |
687 | * outputs - 1 if a perm kline or a tkline when a tkline is being | |
688 | * set exists, else 0 | |
689 | * side effects - notifies source_p kline exists | |
690 | */ | |
691 | /* Note: This currently works if the new K-line is a special case of an | |
692 | * existing K-line, but not the other way round. To do that we would | |
693 | * have to walk the hash and check every existing K-line. -A1kmm. | |
694 | */ | |
695 | static int | |
696 | already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int tkline) | |
697 | { | |
698 | const char *reason; | |
699 | struct irc_sockaddr_storage iphost, *piphost; | |
700 | struct ConfItem *aconf; | |
701 | int t; | |
702 | if(ConfigFileEntry.non_redundant_klines) | |
703 | { | |
704 | if((t = parse_netmask(lhost, (struct sockaddr *)&iphost, NULL)) != HM_HOST) | |
705 | { | |
706 | #ifdef IPV6 | |
707 | if(t == HM_IPV6) | |
708 | t = AF_INET6; | |
709 | else | |
710 | #endif | |
711 | t = AF_INET; | |
712 | ||
713 | piphost = &iphost; | |
714 | } | |
715 | else | |
716 | piphost = NULL; | |
717 | ||
718 | if((aconf = find_conf_by_address(lhost, NULL, NULL, (struct sockaddr *)piphost, CONF_KILL, t, luser))) | |
719 | { | |
720 | /* setting a tkline, or existing one is perm */ | |
721 | if(tkline || ((aconf->flags & CONF_FLAGS_TEMPORARY) == 0)) | |
722 | { | |
723 | reason = aconf->passwd ? aconf->passwd : "<No Reason>"; | |
724 | ||
725 | sendto_one_notice(source_p, | |
726 | ":[%s@%s] already K-Lined by [%s@%s] - %s", | |
727 | luser, lhost, aconf->user, | |
728 | aconf->host, reason); | |
729 | return 1; | |
730 | } | |
731 | } | |
732 | } | |
733 | ||
734 | return 0; | |
735 | } | |
736 | ||
737 | /* remove_permkline_match() | |
738 | * | |
739 | * hunts for a permanent kline, and removes it. | |
740 | */ | |
741 | static void | |
742 | remove_permkline_match(struct Client *source_p, const char *host, const char *user) | |
743 | { | |
744 | FILE *in, *out; | |
745 | int pairme = 0; | |
746 | int error_on_write = NO; | |
747 | char buf[BUFSIZE]; | |
748 | char matchbuf[BUFSIZE]; | |
749 | char temppath[BUFSIZE]; | |
750 | const char *filename; | |
751 | mode_t oldumask; | |
752 | int matchlen; | |
753 | ||
754 | ircsnprintf(temppath, sizeof(temppath), | |
755 | "%s.tmp", ConfigFileEntry.klinefile); | |
756 | ||
757 | filename = get_conf_name(KLINE_TYPE); | |
758 | ||
759 | if((in = fopen(filename, "r")) == 0) | |
760 | { | |
761 | sendto_one_notice(source_p, ":Cannot open %s", filename); | |
762 | return; | |
763 | } | |
764 | ||
765 | oldumask = umask(0); | |
766 | if((out = fopen(temppath, "w")) == 0) | |
767 | { | |
768 | sendto_one_notice(source_p, ":Cannot open %s", temppath); | |
769 | fclose(in); | |
770 | umask(oldumask); | |
771 | return; | |
772 | } | |
773 | ||
774 | umask(oldumask); | |
775 | ||
776 | snprintf(matchbuf, sizeof(matchbuf), "\"%s\",\"%s\"", user, host); | |
777 | matchlen = strlen(matchbuf); | |
778 | ||
779 | while (fgets(buf, sizeof(buf), in)) | |
780 | { | |
781 | if(error_on_write) | |
782 | break; | |
783 | ||
784 | if(!strncasecmp(buf, matchbuf, matchlen)) | |
785 | { | |
786 | pairme++; | |
787 | break; | |
788 | } | |
789 | else | |
790 | error_on_write = flush_write(source_p, out, buf, temppath); | |
791 | } | |
792 | ||
793 | /* we dropped out of the loop early because we found a match, | |
794 | * to drop into this somewhat faster loop as we presume we'll never | |
795 | * have two matching klines --anfl | |
796 | */ | |
797 | if(pairme && !error_on_write) | |
798 | { | |
799 | while(fgets(buf, sizeof(buf), in)) | |
800 | { | |
801 | if(error_on_write) | |
802 | break; | |
803 | ||
804 | error_on_write = flush_write(source_p, out, buf, temppath); | |
805 | } | |
806 | } | |
807 | ||
808 | fclose(in); | |
809 | if (fclose(out)) | |
810 | error_on_write = YES; | |
811 | ||
812 | /* The result of the rename should be checked too... oh well */ | |
813 | /* If there was an error on a write above, then its been reported | |
814 | * and I am not going to trash the original kline /conf file | |
815 | */ | |
816 | if(error_on_write) | |
817 | { | |
818 | sendto_one_notice(source_p, ":Couldn't write temp kline file, aborted"); | |
819 | return; | |
820 | } | |
821 | else if(!pairme) | |
822 | { | |
823 | sendto_one_notice(source_p, ":No K-Line for %s@%s", | |
824 | user, host); | |
825 | ||
826 | if(temppath != NULL) | |
827 | (void) unlink(temppath); | |
828 | ||
829 | return; | |
830 | } | |
831 | ||
832 | if (rename(temppath, filename)) | |
833 | { | |
834 | sendto_one_notice(source_p, ":Couldn't rename temp file, aborted"); | |
835 | return; | |
836 | } | |
837 | rehash_bans(0); | |
838 | ||
839 | sendto_one_notice(source_p, ":K-Line for [%s@%s] is removed", | |
840 | user, host); | |
841 | ||
842 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
843 | "%s has removed the K-Line for: [%s@%s]", | |
844 | get_oper_name(source_p), user, host); | |
845 | ||
846 | ilog(L_KLINE, "UK %s %s %s", | |
847 | get_oper_name(source_p), user, host); | |
848 | return; | |
849 | } | |
850 | ||
851 | /* | |
852 | * flush_write() | |
853 | * | |
854 | * inputs - pointer to client structure of oper requesting unkline | |
855 | * - out is the file descriptor | |
856 | * - buf is the buffer to write | |
857 | * - ntowrite is the expected number of character to be written | |
858 | * - temppath is the temporary file name to be written | |
859 | * output - YES for error on write | |
860 | * - NO for success | |
861 | * side effects - if successful, the buf is written to output file | |
862 | * if a write failure happesn, and the file pointed to | |
863 | * by temppath, if its non NULL, is removed. | |
864 | * | |
865 | * The idea here is, to be as robust as possible when writing to the | |
866 | * kline file. | |
867 | * | |
868 | * -Dianora | |
869 | */ | |
870 | ||
871 | static int | |
872 | flush_write(struct Client *source_p, FILE * out, const char *buf, const char *temppath) | |
873 | { | |
874 | int error_on_write = (fputs(buf, out) < 0) ? YES : NO; | |
875 | ||
876 | if(error_on_write) | |
877 | { | |
878 | sendto_one_notice(source_p, ":Unable to write to %s", | |
879 | temppath); | |
880 | if(temppath != NULL) | |
881 | (void) unlink(temppath); | |
882 | } | |
883 | return (error_on_write); | |
884 | } | |
885 | ||
886 | /* remove_temp_kline() | |
887 | * | |
888 | * inputs - username, hostname to unkline | |
889 | * outputs - | |
890 | * side effects - tries to unkline anything that matches | |
891 | */ | |
892 | static int | |
893 | remove_temp_kline(const char *user, const char *host) | |
894 | { | |
895 | struct ConfItem *aconf; | |
896 | dlink_node *ptr; | |
897 | struct irc_sockaddr_storage addr, caddr; | |
898 | int bits, cbits; | |
899 | int mtype, ktype; | |
900 | int i; | |
901 | ||
902 | mtype = parse_netmask(host, (struct sockaddr *)&addr, &bits); | |
903 | ||
904 | for (i = 0; i < LAST_TEMP_TYPE; i++) | |
905 | { | |
906 | DLINK_FOREACH(ptr, temp_klines[i].head) | |
907 | { | |
908 | aconf = ptr->data; | |
909 | ||
910 | ktype = parse_netmask(aconf->host, (struct sockaddr *)&caddr, &cbits); | |
911 | ||
912 | if(ktype != mtype || (user && irccmp(user, aconf->user))) | |
913 | continue; | |
914 | ||
915 | if(ktype == HM_HOST) | |
916 | { | |
917 | if(irccmp(aconf->host, host)) | |
918 | continue; | |
919 | } | |
920 | else if(bits != cbits || | |
921 | !comp_with_mask_sock((struct sockaddr *)&addr, | |
922 | (struct sockaddr *)&caddr, bits)) | |
923 | continue; | |
924 | ||
925 | dlinkDestroy(ptr, &temp_klines[i]); | |
926 | delete_one_address_conf(aconf->host, aconf); | |
927 | return YES; | |
928 | } | |
929 | } | |
930 | ||
931 | return NO; | |
932 | } |