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Commit | Line | Data |
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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_dline.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 | * | |
8bbeb278 | 24 | * $Id$ |
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" | |
8bbeb278 | 45 | #include "bandbi.h" |
27f616dd | 46 | #include "operhash.h" |
212380e3 AC |
47 | |
48 | static int mo_dline(struct Client *, struct Client *, int, const char **); | |
f5cb68d5 | 49 | static int me_dline(struct Client *, struct Client *, int, const char **); |
212380e3 | 50 | static int mo_undline(struct Client *, struct Client *, int, const char **); |
f5cb68d5 | 51 | static int me_undline(struct Client *, struct Client *, int, const char **); |
212380e3 AC |
52 | |
53 | struct Message dline_msgtab = { | |
54 | "DLINE", 0, 0, 0, MFLG_SLOW, | |
f5cb68d5 | 55 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_dline, 3}, {mo_dline, 2}} |
212380e3 | 56 | }; |
8bbeb278 | 57 | |
212380e3 AC |
58 | struct Message undline_msgtab = { |
59 | "UNDLINE", 0, 0, 0, MFLG_SLOW, | |
f5cb68d5 | 60 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_undline, 1}, {mo_undline, 2}} |
212380e3 AC |
61 | }; |
62 | ||
63 | mapi_clist_av1 dline_clist[] = { &dline_msgtab, &undline_msgtab, NULL }; | |
8bbeb278 AC |
64 | |
65 | DECLARE_MODULE_AV1(dline, NULL, NULL, dline_clist, NULL, NULL, "$Revision$"); | |
212380e3 AC |
66 | |
67 | static int valid_comment(char *comment); | |
6f3a09ff | 68 | static int remove_temp_dline(struct ConfItem *); |
5f7a6a3d | 69 | static int apply_dline(struct Client *, const char *, int, char *); |
f5cb68d5 | 70 | static int apply_undline(struct Client *, const char *); |
212380e3 AC |
71 | |
72 | /* mo_dline() | |
73 | * | |
74 | * parv[1] - dline to add | |
75 | * parv[2] - reason | |
76 | */ | |
77 | static int | |
8bbeb278 | 78 | mo_dline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
79 | { |
80 | char def[] = "No Reason"; | |
81 | const char *dlhost; | |
212380e3 | 82 | char *reason = def; |
212380e3 | 83 | char cidr_form_host[HOSTLEN + 1]; |
212380e3 | 84 | int tdline_time = 0; |
f5cb68d5 | 85 | const char *target_server = NULL; |
212380e3 AC |
86 | int loc = 1; |
87 | ||
88 | if(!IsOperK(source_p)) | |
89 | { | |
8bbeb278 | 90 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "kline"); |
212380e3 AC |
91 | return 0; |
92 | } | |
93 | ||
94 | if((tdline_time = valid_temp_time(parv[loc])) >= 0) | |
95 | loc++; | |
96 | ||
212380e3 | 97 | dlhost = parv[loc]; |
f427c8b0 | 98 | rb_strlcpy(cidr_form_host, dlhost, sizeof(cidr_form_host)); |
f5cb68d5 VY |
99 | loc++; |
100 | ||
2b843a5b JT |
101 | /* would break the protocol */ |
102 | if (*dlhost == ':') | |
103 | { | |
104 | sendto_one_notice(source_p, ":Invalid D-Line"); | |
105 | return 0; | |
106 | } | |
107 | ||
8bbeb278 AC |
108 | if(parc >= loc + 2 && !irccmp(parv[loc], "ON")) |
109 | { | |
2cfb7214 JT |
110 | if(!IsOperRemoteBan(source_p)) |
111 | { | |
112 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
8bbeb278 | 113 | me.name, source_p->name, "remoteban"); |
2cfb7214 JT |
114 | return 0; |
115 | } | |
116 | ||
8bbeb278 | 117 | target_server = parv[loc + 1]; |
f5cb68d5 VY |
118 | loc += 2; |
119 | } | |
120 | ||
121 | if(parc >= loc + 1 && !EmptyString(parv[loc])) | |
122 | reason = LOCAL_COPY(parv[loc]); | |
123 | ||
124 | if(target_server != NULL) | |
212380e3 | 125 | { |
f5cb68d5 | 126 | sendto_match_servs(source_p, target_server, |
8bbeb278 AC |
127 | CAP_ENCAP, NOCAPS, |
128 | "ENCAP %s DLINE %d %s :%s", | |
129 | target_server, tdline_time, dlhost, reason); | |
f5cb68d5 VY |
130 | |
131 | if(!match(target_server, me.name)) | |
132 | return 0; | |
212380e3 AC |
133 | } |
134 | ||
f5cb68d5 VY |
135 | apply_dline(source_p, dlhost, tdline_time, reason); |
136 | ||
137 | check_dlines(); | |
138 | return 0; | |
139 | } | |
212380e3 | 140 | |
f5cb68d5 VY |
141 | /* mo_undline() |
142 | * | |
143 | * parv[1] = dline to remove | |
144 | */ | |
145 | static int | |
146 | mo_undline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
147 | { | |
148 | const char *cidr; | |
149 | const char *target_server = NULL; | |
150 | ||
151 | if(!IsOperK(source_p)) | |
152 | { | |
8bbeb278 AC |
153 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "unkline"); |
154 | return 0; | |
155 | } | |
156 | ||
f5cb68d5 VY |
157 | cidr = parv[1]; |
158 | ||
159 | if(parc >= 4 && !irccmp(parv[2], "ON")) | |
212380e3 | 160 | { |
2cfb7214 JT |
161 | if(!IsOperRemoteBan(source_p)) |
162 | { | |
163 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
8bbeb278 | 164 | me.name, source_p->name, "remoteban"); |
2cfb7214 JT |
165 | return 0; |
166 | } | |
167 | ||
f5cb68d5 VY |
168 | target_server = parv[3]; |
169 | sendto_match_servs(source_p, target_server, | |
8bbeb278 | 170 | CAP_ENCAP, NOCAPS, "ENCAP %s UNDLINE %s", target_server, cidr); |
212380e3 | 171 | |
f5cb68d5 | 172 | if(!match(target_server, me.name)) |
212380e3 | 173 | return 0; |
212380e3 AC |
174 | } |
175 | ||
f5cb68d5 VY |
176 | apply_undline(source_p, cidr); |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
5f7a6a3d JT |
181 | static int |
182 | me_dline(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
183 | { | |
184 | int tdline_time = atoi(parv[1]); | |
185 | /* Since this is coming over a server link, assume that the originating | |
186 | * server did the relevant permission/sanity checks... | |
187 | */ | |
188 | ||
189 | if(!IsPerson(source_p)) | |
190 | return 0; | |
191 | ||
192 | if(!find_shared_conf(source_p->username, source_p->host, | |
8bbeb278 AC |
193 | source_p->servptr->name, |
194 | tdline_time > 0 ? SHARED_TDLINE : SHARED_PDLINE)) | |
5f7a6a3d | 195 | return 0; |
5f7a6a3d JT |
196 | |
197 | apply_dline(source_p, parv[2], tdline_time, LOCAL_COPY(parv[3])); | |
198 | ||
199 | check_dlines(); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | static int | |
204 | me_undline(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
205 | { | |
206 | if(!IsPerson(source_p)) | |
207 | return 0; | |
208 | ||
209 | if(!find_shared_conf(source_p->username, source_p->host, | |
8bbeb278 | 210 | source_p->servptr->name, SHARED_UNDLINE)) |
5f7a6a3d JT |
211 | return 0; |
212 | ||
213 | apply_undline(source_p, parv[1]); | |
214 | ||
215 | return 0; | |
f5cb68d5 VY |
216 | } |
217 | ||
218 | static int | |
219 | apply_dline(struct Client *source_p, const char *dlhost, int tdline_time, char *reason) | |
220 | { | |
221 | struct ConfItem *aconf; | |
222 | char *oper_reason; | |
f5cb68d5 VY |
223 | struct rb_sockaddr_storage daddr; |
224 | int t = AF_INET, ty, b; | |
225 | const char *creason; | |
226 | ||
8bbeb278 | 227 | ty = parse_netmask(dlhost, (struct sockaddr *) &daddr, &b); |
f5cb68d5 VY |
228 | if(ty == HM_HOST) |
229 | { | |
8bbeb278 | 230 | sendto_one(source_p, ":%s NOTICE %s :Invalid D-Line", me.name, source_p->name); |
f5cb68d5 VY |
231 | return 0; |
232 | } | |
233 | #ifdef RB_IPV6 | |
234 | if(ty == HM_IPV6) | |
235 | t = AF_INET6; | |
236 | else | |
237 | #endif | |
238 | t = AF_INET; | |
239 | ||
240 | /* This means dlines wider than /16 cannot be set remotely */ | |
212380e3 AC |
241 | if(IsOperAdmin(source_p)) |
242 | { | |
f5cb68d5 | 243 | if(b < 8) |
212380e3 | 244 | { |
f5cb68d5 | 245 | sendto_one_notice(source_p, |
8bbeb278 | 246 | ":For safety, bitmasks less than 8 require conf access."); |
212380e3 AC |
247 | return 0; |
248 | } | |
249 | } | |
250 | else | |
251 | { | |
f5cb68d5 | 252 | if(b < 16) |
212380e3 | 253 | { |
f5cb68d5 | 254 | sendto_one_notice(source_p, |
8bbeb278 | 255 | ":Dline bitmasks less than 16 are for admins only."); |
212380e3 AC |
256 | return 0; |
257 | } | |
258 | } | |
259 | ||
f5cb68d5 VY |
260 | if(!valid_comment(reason)) |
261 | { | |
262 | sendto_one(source_p, | |
263 | ":%s NOTICE %s :Invalid character '\"' in comment", | |
264 | me.name, source_p->name); | |
265 | return 0; | |
266 | } | |
267 | ||
54ac8b60 VY |
268 | if(ConfigFileEntry.non_redundant_klines) |
269 | { | |
8bbeb278 | 270 | if((aconf = find_dline((struct sockaddr *) &daddr, t)) != NULL) |
54ac8b60 VY |
271 | { |
272 | int bx; | |
273 | parse_netmask(aconf->host, NULL, &bx); | |
274 | if(b >= bx) | |
275 | { | |
276 | creason = aconf->passwd ? aconf->passwd : "<No Reason>"; | |
277 | if(IsConfExemptKline(aconf)) | |
278 | sendto_one(source_p, | |
279 | ":%s NOTICE %s :[%s] is (E)d-lined by [%s] - %s", | |
8bbeb278 AC |
280 | me.name, source_p->name, dlhost, aconf->host, |
281 | creason); | |
54ac8b60 VY |
282 | else |
283 | sendto_one(source_p, | |
284 | ":%s NOTICE %s :[%s] already D-lined by [%s] - %s", | |
8bbeb278 AC |
285 | me.name, source_p->name, dlhost, aconf->host, |
286 | creason); | |
54ac8b60 VY |
287 | return 0; |
288 | } | |
289 | } | |
212380e3 AC |
290 | } |
291 | ||
7df5fcfb | 292 | rb_set_time(); |
212380e3 AC |
293 | |
294 | aconf = make_conf(); | |
295 | aconf->status = CONF_DLINE; | |
b52c2949 | 296 | aconf->created = rb_current_time(); |
47a03750 | 297 | aconf->host = rb_strdup(dlhost); |
a12ad044 | 298 | aconf->passwd = rb_strdup(reason); |
27f616dd | 299 | aconf->info.oper = operhash_add(get_oper_name(source_p)); |
212380e3 | 300 | |
08e8aa7a VY |
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 | aconf->spasswd = rb_strdup(oper_reason); | |
309 | } | |
310 | ||
212380e3 AC |
311 | if(tdline_time > 0) |
312 | { | |
e3354945 | 313 | aconf->hold = rb_current_time() + tdline_time; |
212380e3 AC |
314 | add_temp_dline(aconf); |
315 | ||
316 | if(EmptyString(oper_reason)) | |
317 | { | |
61c096aa | 318 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
8bbeb278 AC |
319 | "%s added temporary %d min. D-Line for [%s] [%s]", |
320 | get_oper_name(source_p), tdline_time / 60, | |
321 | aconf->host, reason); | |
212380e3 | 322 | ilog(L_KLINE, "D %s %d %s %s", |
8bbeb278 | 323 | get_oper_name(source_p), tdline_time / 60, aconf->host, reason); |
212380e3 AC |
324 | } |
325 | else | |
326 | { | |
61c096aa | 327 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
8bbeb278 AC |
328 | "%s added temporary %d min. D-Line for [%s] [%s|%s]", |
329 | get_oper_name(source_p), tdline_time / 60, | |
330 | aconf->host, reason, oper_reason); | |
212380e3 | 331 | ilog(L_KLINE, "D %s %d %s %s|%s", |
8bbeb278 AC |
332 | get_oper_name(source_p), tdline_time / 60, |
333 | aconf->host, reason, oper_reason); | |
212380e3 AC |
334 | } |
335 | ||
336 | sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. D-Line for [%s]", | |
337 | me.name, source_p->name, tdline_time / 60, aconf->host); | |
338 | } | |
339 | else | |
340 | { | |
40c1fd47 | 341 | add_conf_by_address(aconf->host, CONF_DLINE, NULL, NULL, aconf); |
8bbeb278 AC |
342 | |
343 | bandb_add(BANDB_DLINE, source_p, aconf->host, NULL, | |
344 | reason, EmptyString(aconf->spasswd) ? NULL : aconf->spasswd, 0); | |
9964e935 AC |
345 | |
346 | if(EmptyString(oper_reason)) | |
347 | { | |
348 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
349 | "%s added D-Line for [%s] [%s]", | |
350 | get_oper_name(source_p), aconf->host, reason); | |
351 | ilog(L_KLINE, "D %s 0 %s %s", | |
352 | get_oper_name(source_p), aconf->host, reason); | |
353 | } | |
354 | else | |
355 | { | |
356 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
357 | "%s added D-Line for [%s] [%s|%s]", | |
358 | get_oper_name(source_p), aconf->host, reason, oper_reason); | |
359 | ilog(L_KLINE, "D %s 0 %s %s|%s", | |
360 | get_oper_name(source_p), | |
361 | aconf->host, reason, oper_reason); | |
362 | } | |
212380e3 AC |
363 | } |
364 | ||
212380e3 AC |
365 | return 0; |
366 | } | |
367 | ||
212380e3 | 368 | static int |
f5cb68d5 | 369 | apply_undline(struct Client *source_p, const char *cidr) |
212380e3 | 370 | { |
8bbeb278 | 371 | char buf[BUFSIZE]; |
f5cb68d5 | 372 | struct ConfItem *aconf; |
212380e3 AC |
373 | |
374 | if(parse_netmask(cidr, NULL, NULL) == HM_HOST) | |
375 | { | |
5366977b | 376 | sendto_one_notice(source_p, ":Invalid D-Line"); |
212380e3 AC |
377 | return 0; |
378 | } | |
379 | ||
6f3a09ff JT |
380 | aconf = find_exact_conf_by_address(cidr, CONF_DLINE, NULL); |
381 | if(aconf == NULL) | |
382 | { | |
383 | sendto_one_notice(source_p, ":No D-Line for %s", cidr); | |
384 | return 0; | |
385 | } | |
386 | ||
f427c8b0 | 387 | rb_strlcpy(buf, aconf->host, sizeof buf); |
6f3a09ff | 388 | if(remove_temp_dline(aconf)) |
212380e3 AC |
389 | { |
390 | sendto_one(source_p, | |
391 | ":%s NOTICE %s :Un-dlined [%s] from temporary D-lines", | |
f5cb68d5 | 392 | me.name, source_p->name, buf); |
212380e3 | 393 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
8bbeb278 AC |
394 | "%s has removed the temporary D-Line for: [%s]", |
395 | get_oper_name(source_p), buf); | |
6f3a09ff | 396 | ilog(L_KLINE, "UD %s %s", get_oper_name(source_p), buf); |
212380e3 AC |
397 | return 0; |
398 | } | |
399 | ||
8bbeb278 | 400 | bandb_del(BANDB_DLINE, aconf->host, NULL); |
212380e3 | 401 | |
8bbeb278 AC |
402 | sendto_one(source_p, ":%s NOTICE %s :D-Line for [%s] is removed", me.name, source_p->name, |
403 | aconf->host); | |
404 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has removed the D-Line for: [%s]", | |
405 | get_oper_name(source_p), aconf->host); | |
37f6cc05 JT |
406 | ilog(L_KLINE, "UD %s %s", get_oper_name(source_p), aconf->host); |
407 | delete_one_address_conf(aconf->host, aconf); | |
212380e3 AC |
408 | |
409 | return 0; | |
410 | } | |
411 | ||
412 | /* | |
413 | * valid_comment | |
414 | * inputs - pointer to client | |
415 | * - pointer to comment | |
416 | * output - 0 if no valid comment, 1 if valid | |
417 | * side effects - NONE | |
418 | */ | |
419 | static int | |
420 | valid_comment(char *comment) | |
421 | { | |
422 | if(strchr(comment, '"')) | |
423 | return 0; | |
424 | ||
61569b65 JT |
425 | if(strlen(comment) > BANREASONLEN) |
426 | comment[BANREASONLEN] = '\0'; | |
212380e3 AC |
427 | |
428 | return 1; | |
429 | } | |
430 | ||
212380e3 AC |
431 | /* remove_temp_dline() |
432 | * | |
6f3a09ff | 433 | * inputs - confitem to undline |
212380e3 AC |
434 | * outputs - |
435 | * side effects - tries to undline anything that matches | |
436 | */ | |
437 | static int | |
6f3a09ff | 438 | remove_temp_dline(struct ConfItem *aconf) |
212380e3 | 439 | { |
5b96d9a6 | 440 | rb_dlink_node *ptr; |
212380e3 AC |
441 | int i; |
442 | ||
8bbeb278 | 443 | for(i = 0; i < LAST_TEMP_TYPE; i++) |
212380e3 | 444 | { |
5b96d9a6 | 445 | RB_DLINK_FOREACH(ptr, temp_dlines[i].head) |
212380e3 | 446 | { |
8bbeb278 | 447 | if(aconf == ptr->data) |
212380e3 | 448 | { |
555ac41f | 449 | rb_dlinkDestroy(ptr, &temp_dlines[i]); |
212380e3 AC |
450 | delete_one_address_conf(aconf->host, aconf); |
451 | return YES; | |
452 | } | |
453 | } | |
454 | } | |
455 | ||
456 | return NO; | |
457 | } |