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root/svn/ircd-hybrid/releases/8.0.0beta2/modules/m_kline.c
Revision: 1603
Committed: Sat Oct 27 21:20:57 2012 UTC (12 years, 9 months ago) by michael
Content type: text/x-csrc
File size: 15732 byte(s)
Log Message:
- Moving releases to ircd-hybrid/releases/. Not nice, but oh well

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * m_kline.c: Bans a user.
4 *
5 * Copyright (C) 2002 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "list.h"
27 #include "channel.h"
28 #include "client.h"
29 #include "irc_string.h"
30 #include "sprintf_irc.h"
31 #include "ircd.h"
32 #include "hostmask.h"
33 #include "numeric.h"
34 #include "fdlist.h"
35 #include "s_bsd.h"
36 #include "conf.h"
37 #include "log.h"
38 #include "s_misc.h"
39 #include "send.h"
40 #include "hash.h"
41 #include "s_serv.h"
42 #include "s_gline.h"
43 #include "parse.h"
44 #include "modules.h"
45
46
47 static int already_placed_kline(struct Client *, const char *, const char *, int);
48 static void apply_kline(struct Client *, struct ConfItem *, const char *, time_t);
49 static void apply_tkline(struct Client *, struct ConfItem *, int);
50
51 static char buffer[IRCD_BUFSIZE];
52 static int remove_tkline_match(const char *, const char *);
53
54
55 /* mo_kline()
56 *
57 * inputs - pointer to server
58 * - pointer to client
59 * - parameter count
60 * - parameter list
61 * output -
62 * side effects - k line is added
63 */
64 static void
65 mo_kline(struct Client *client_p, struct Client *source_p,
66 int parc, char *parv[])
67 {
68 char *reason = NULL;
69 char *oper_reason;
70 char *user = NULL;
71 char *host = NULL;
72 const char *current_date;
73 char *target_server = NULL;
74 struct ConfItem *conf;
75 struct AccessItem *aconf;
76 time_t tkline_time = 0;
77 time_t cur_time;
78
79 if (!HasOFlag(source_p, OPER_FLAG_K))
80 {
81 sendto_one(source_p, form_str(ERR_NOPRIVS),
82 me.name, source_p->name, "kline");
83 return;
84 }
85
86 if (parse_aline("KLINE", source_p, parc, parv,
87 AWILD, &user, &host, &tkline_time, &target_server, &reason) < 0)
88 return;
89
90 if (target_server != NULL)
91 {
92 if (HasID(source_p))
93 {
94 sendto_server(NULL, NULL, CAP_KLN|CAP_TS6, NOCAPS,
95 ":%s KLINE %s %lu %s %s :%s",
96 source_p->id, target_server, (unsigned long)tkline_time,
97 user, host, reason);
98 sendto_server(NULL, NULL, CAP_KLN, CAP_TS6,
99 ":%s KLINE %s %lu %s %s :%s",
100 source_p->name, target_server, (unsigned long)tkline_time,
101 user, host, reason);
102 }
103 else
104 sendto_server(NULL, NULL, CAP_KLN, NOCAPS,
105 ":%s KLINE %s %lu %s %s :%s",
106 source_p->name, target_server, (unsigned long)tkline_time,
107 user, host, reason);
108
109 /* Allow ON to apply local kline as well if it matches */
110 if (!match(target_server, me.name))
111 return;
112 }
113 else
114 cluster_a_line(source_p, "KLINE", CAP_KLN, SHARED_KLINE,
115 "%d %s %s :%s", tkline_time, user, host, reason);
116
117 if (already_placed_kline(source_p, user, host, 1))
118 return;
119
120 /* Look for an oper reason */
121 if ((oper_reason = strchr(reason, '|')) != NULL)
122 *oper_reason++ = '\0';
123
124 cur_time = CurrentTime;
125 current_date = smalldate(cur_time);
126 conf = make_conf_item(KLINE_TYPE);
127 aconf = map_to_conf(conf);
128
129 DupString(aconf->host, host);
130 DupString(aconf->user, user);
131
132 if (tkline_time != 0)
133 {
134 snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)",
135 (int)(tkline_time/60), reason, current_date);
136 DupString(aconf->reason, buffer);
137
138 if (oper_reason != NULL)
139 DupString(aconf->oper_reason, oper_reason);
140 apply_tkline(source_p, conf, tkline_time);
141 }
142 else
143 {
144 snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
145 DupString(aconf->reason, buffer);
146
147 if (oper_reason != NULL)
148 DupString(aconf->oper_reason, oper_reason);
149 apply_kline(source_p, conf, current_date, cur_time);
150 }
151 }
152
153 /* me_kline - handle remote kline. no propagation */
154 static void
155 me_kline(struct Client *client_p, struct Client *source_p,
156 int parc, char *parv[])
157 {
158 struct ConfItem *conf=NULL;
159 struct AccessItem *aconf=NULL;
160 int tkline_time;
161 const char* current_date;
162 time_t cur_time;
163 char *kuser, *khost, *kreason, *oper_reason;
164
165 if (parc != 6 || EmptyString(parv[5]))
166 return;
167
168 if (!match(parv[1], me.name))
169 return;
170
171 tkline_time = valid_tkline(parv[2], TK_SECONDS);
172 kuser = parv[3];
173 khost = parv[4];
174 kreason = parv[5];
175
176 if ((oper_reason = strchr(kreason, '|')) != NULL)
177 *oper_reason++ = '\0';
178
179 cur_time = CurrentTime;
180 current_date = smalldate(cur_time);
181
182 if (HasFlag(source_p, FLAGS_SERVICE) || find_matching_name_conf(ULINE_TYPE, source_p->servptr->name,
183 source_p->username, source_p->host,
184 SHARED_KLINE))
185 {
186 if (!IsClient(source_p) ||
187 already_placed_kline(source_p, kuser, khost, 1))
188 return;
189
190 conf = make_conf_item(KLINE_TYPE);
191 aconf = map_to_conf(conf);
192 DupString(aconf->host, khost);
193 DupString(aconf->user, kuser);
194
195 if (tkline_time != 0)
196 {
197 snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)",
198 (int)(tkline_time/60), kreason, current_date);
199 DupString(aconf->reason, buffer);
200
201 if (oper_reason != NULL)
202 DupString(aconf->oper_reason, oper_reason);
203 apply_tkline(source_p, conf, tkline_time);
204 }
205 else
206 {
207 snprintf(buffer, sizeof(buffer), "%s (%s)", kreason, current_date);
208 DupString(aconf->reason, buffer);
209
210 if (oper_reason != NULL)
211 DupString(aconf->oper_reason, oper_reason);
212 apply_kline(source_p, conf, current_date, cur_time);
213 }
214 }
215 }
216
217 static void
218 ms_kline(struct Client *client_p, struct Client *source_p,
219 int parc, char *parv[])
220 {
221 if (parc != 6 || EmptyString(parv[5]))
222 return;
223
224 /* parv[0] parv[1] parv[2] parv[3] parv[4] parv[5] */
225 /* oper target_server tkline_time user host reason */
226 sendto_match_servs(source_p, parv[1], CAP_KLN,
227 "KLINE %s %s %s %s :%s",
228 parv[1], parv[2], parv[3], parv[4], parv[5]);
229
230 me_kline(client_p, source_p, parc, parv);
231 }
232
233 /* apply_kline()
234 *
235 * inputs -
236 * output - NONE
237 * side effects - kline as given, is added to the hashtable
238 * and conf file
239 */
240 static void
241 apply_kline(struct Client *source_p, struct ConfItem *conf,
242 const char *current_date, time_t cur_time)
243 {
244 struct AccessItem *aconf = map_to_conf(conf);
245
246 add_conf_by_address(CONF_KLINE, aconf);
247 write_conf_line(source_p, conf, current_date, cur_time);
248 /* Now, activate kline against current online clients */
249 rehashed_klines = 1;
250 }
251
252 /* apply_tkline()
253 *
254 * inputs -
255 * output - NONE
256 * side effects - tkline as given is placed
257 */
258 static void
259 apply_tkline(struct Client *source_p, struct ConfItem *conf,
260 int tkline_time)
261 {
262 struct AccessItem *aconf;
263
264 aconf = (struct AccessItem *)map_to_conf(conf);
265 aconf->hold = CurrentTime + tkline_time;
266 SetConfTemporary(aconf);
267 add_conf_by_address(CONF_KLINE, aconf);
268
269 sendto_realops_flags(UMODE_ALL, L_ALL,
270 "%s added temporary %d min. K-Line for [%s@%s] [%s]",
271 get_oper_name(source_p), tkline_time/60,
272 aconf->user, aconf->host,
273 aconf->reason);
274 sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. K-Line [%s@%s]",
275 MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
276 source_p->name, tkline_time/60, aconf->user, aconf->host);
277 ilog(LOG_TYPE_KLINE, "%s added temporary %d min. K-Line for [%s@%s] [%s]",
278 source_p->name, tkline_time/60,
279 aconf->user, aconf->host, aconf->reason);
280
281 rehashed_klines = 1;
282 }
283
284 /* already_placed_kline()
285 * inputs - user to complain to, username & host to check for
286 * outputs - returns 1 on existing K-line, 0 if doesn't exist
287 * side effects - notifies source_p if the K-line already exists
288 */
289 /*
290 * Note: This currently works if the new K-line is a special case of an
291 * existing K-line, but not the other way round. To do that we would
292 * have to walk the hash and check every existing K-line. -A1kmm.
293 */
294 static int
295 already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int warn)
296 {
297 const char *reason;
298 struct irc_ssaddr iphost, *piphost;
299 struct AccessItem *aconf;
300 int t;
301
302 if ((t = parse_netmask(lhost, &iphost, &t)) != HM_HOST)
303 {
304 #ifdef IPV6
305 if (t == HM_IPV6)
306 t = AF_INET6;
307 else
308 #endif
309 t = AF_INET;
310 piphost = &iphost;
311 }
312 else
313 {
314 t = 0;
315 piphost = NULL;
316 }
317
318 if ((aconf = find_conf_by_address(lhost, piphost, CONF_KLINE, t, luser, NULL, 0)))
319 {
320 if (warn)
321 {
322 reason = aconf->reason ? aconf->reason : "No reason";
323 sendto_one(source_p,
324 ":%s NOTICE %s :[%s@%s] already K-Lined by [%s@%s] - %s",
325 me.name, source_p->name, luser, lhost, aconf->user,
326 aconf->host, reason);
327 }
328
329 return 1;
330 }
331
332 return 0;
333 }
334
335 /*
336 ** mo_unkline
337 ** Added Aug 31, 1997
338 ** common (Keith Fralick) fralick@gate.net
339 **
340 ** parv[0] = sender
341 ** parv[1] = address to remove
342 *
343 *
344 */
345 static void
346 mo_unkline(struct Client *client_p,struct Client *source_p,
347 int parc, char *parv[])
348 {
349 char *target_server = NULL;
350 char *user, *host;
351
352 if (!HasOFlag(source_p, OPER_FLAG_UNKLINE))
353 {
354 sendto_one(source_p, form_str(ERR_NOPRIVS),
355 me.name, source_p->name, "unkline");
356 return;
357 }
358
359 if (parc < 2 || EmptyString(parv[1]))
360 {
361 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
362 me.name, source_p->name, "UNKLINE");
363 return;
364 }
365
366 if (parse_aline("UNKLINE", source_p, parc, parv, 0, &user,
367 &host, NULL, &target_server, NULL) < 0)
368 return;
369
370 if (target_server != NULL)
371 {
372 sendto_match_servs(source_p, target_server, CAP_UNKLN,
373 "UNKLINE %s %s %s",
374 target_server, user, host);
375
376 /* Allow ON to apply local unkline as well if it matches */
377 if (!match(target_server, me.name))
378 return;
379 }
380 else
381 cluster_a_line(source_p, "UNKLINE", CAP_UNKLN, SHARED_UNKLINE,
382 "%s %s", user, host);
383
384 if (remove_tkline_match(host, user))
385 {
386 sendto_one(source_p,
387 ":%s NOTICE %s :Un-klined [%s@%s] from temporary K-Lines",
388 me.name, source_p->name, user, host);
389 sendto_realops_flags(UMODE_ALL, L_ALL,
390 "%s has removed the temporary K-Line for: [%s@%s]",
391 get_oper_name(source_p), user, host);
392 ilog(LOG_TYPE_KLINE, "%s removed temporary K-Line for [%s@%s]",
393 source_p->name, user, host);
394 return;
395 }
396
397 if (remove_conf_line(KLINE_TYPE, source_p, user, host) > 0)
398 {
399 sendto_one(source_p, ":%s NOTICE %s :K-Line for [%s@%s] is removed",
400 me.name, source_p->name, user,host);
401 sendto_realops_flags(UMODE_ALL, L_ALL,
402 "%s has removed the K-Line for: [%s@%s]",
403 get_oper_name(source_p), user, host);
404 ilog(LOG_TYPE_KLINE, "%s removed K-Line for [%s@%s]",
405 source_p->name, user, host);
406 }
407 else
408 sendto_one(source_p, ":%s NOTICE %s :No K-Line for [%s@%s] found",
409 me.name, source_p->name, user, host);
410 }
411
412 /* me_unkline()
413 *
414 * inputs - server
415 * - client
416 * - parc
417 * - parv
418 * outputs - none
419 * side effects - if server is authorized, kline is removed
420 * does not propagate message
421 */
422 static void
423 me_unkline(struct Client *client_p, struct Client *source_p,
424 int parc, char *parv[])
425 {
426 const char *kuser, *khost;
427
428 if (parc != 4)
429 return;
430
431 kuser = parv[2];
432 khost = parv[3];
433
434 if (!IsClient(source_p) || !match(parv[1], me.name))
435 return;
436
437 if (HasFlag(source_p, FLAGS_SERVICE) || find_matching_name_conf(ULINE_TYPE,
438 source_p->servptr->name,
439 source_p->username, source_p->host,
440 SHARED_UNKLINE))
441 {
442 if (remove_tkline_match(khost, kuser))
443 {
444 sendto_one(source_p,
445 ":%s NOTICE %s :Un-klined [%s@%s] from temporary K-Lines",
446 me.name, source_p->name, kuser, khost);
447 sendto_realops_flags(UMODE_ALL, L_ALL,
448 "%s has removed the temporary K-Line for: [%s@%s]",
449 get_oper_name(source_p), kuser, khost);
450 ilog(LOG_TYPE_KLINE, "%s removed temporary K-Line for [%s@%s]",
451 source_p->name, kuser, khost);
452 return;
453 }
454
455 if (remove_conf_line(KLINE_TYPE, source_p, kuser, khost) > 0)
456 {
457 sendto_one(source_p, ":%s NOTICE %s :K-Line for [%s@%s] is removed",
458 me.name, source_p->name, kuser, khost);
459 sendto_realops_flags(UMODE_ALL, L_ALL,
460 "%s has removed the K-Line for: [%s@%s]",
461 get_oper_name(source_p), kuser, khost);
462
463 ilog(LOG_TYPE_KLINE, "%s removed K-Line for [%s@%s]",
464 source_p->name, kuser, khost);
465 }
466 else
467 sendto_one(source_p, ":%s NOTICE %s :No K-Line for [%s@%s] found",
468 me.name, source_p->name, kuser, khost);
469 }
470 }
471
472 /* ms_unkline - propagates and handles a remote unkline message */
473 static void
474 ms_unkline(struct Client *client_p, struct Client *source_p,
475 int parc, char *parv[])
476 {
477 if (parc != 4)
478 return;
479
480 sendto_match_servs(source_p, parv[1], CAP_UNKLN,
481 "UNKLINE %s %s %s",
482 parv[1], parv[2], parv[3]);
483
484 me_unkline(client_p, source_p, parc, parv);
485 }
486
487 /* static int remove_tkline_match(const char *host, const char *user)
488 * Input: A hostname, a username to unkline.
489 * Output: returns YES on success, NO if no tkline removed.
490 * Side effects: Any matching tklines are removed.
491 */
492 static int
493 remove_tkline_match(const char *host, const char *user)
494 {
495 struct irc_ssaddr iphost, *piphost;
496 struct AccessItem *aconf;
497 int t;
498
499 if ((t = parse_netmask(host, &iphost, NULL)) != HM_HOST)
500 {
501 #ifdef IPV6
502 if (t == HM_IPV6)
503 t = AF_INET6;
504 else
505 #endif
506 t = AF_INET;
507 piphost = &iphost;
508 }
509 else
510 {
511 t = 0;
512 piphost = NULL;
513 }
514
515 if ((aconf = find_conf_by_address(host, piphost, CONF_KLINE, t, user, NULL, 0)))
516 {
517 if (IsConfTemporary(aconf))
518 {
519 delete_one_address_conf(host, aconf);
520 return 1;
521 }
522 }
523
524 return 0;
525 }
526
527 static struct Message kline_msgtab = {
528 "KLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
529 {m_unregistered, m_not_oper, ms_kline, me_kline, mo_kline, m_ignore}
530 };
531
532 static struct Message unkline_msgtab = {
533 "UNKLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
534 {m_unregistered, m_not_oper, ms_unkline, me_unkline, mo_unkline, m_ignore}
535 };
536
537 static void
538 module_init(void)
539 {
540 mod_add_cmd(&kline_msgtab);
541 mod_add_cmd(&unkline_msgtab);
542 add_capability("KLN", CAP_KLN, 1);
543 add_capability("UNKLN", CAP_UNKLN, 1);
544 }
545
546 static void
547 module_exit(void)
548 {
549 mod_del_cmd(&kline_msgtab);
550 mod_del_cmd(&unkline_msgtab);
551 delete_capability("UNKLN");
552 delete_capability("KLN");
553 }
554
555 struct module module_entry = {
556 .node = { NULL, NULL, NULL },
557 .name = NULL,
558 .version = "$Revision$",
559 .handle = NULL,
560 .modinit = module_init,
561 .modexit = module_exit,
562 .flags = 0
563 };

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