| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
| 3 |
* |
| 4 |
* Copyright (c) 1997-2014 ircd-hybrid development team |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 19 |
* USA |
| 20 |
*/ |
| 21 |
|
| 22 |
/*! \file m_kline.c |
| 23 |
* \brief Includes required functions for processing the KLINE/UNKLINE command. |
| 24 |
* \version $Id$ |
| 25 |
*/ |
| 26 |
|
| 27 |
#include "stdinc.h" |
| 28 |
#include "list.h" |
| 29 |
#include "client.h" |
| 30 |
#include "irc_string.h" |
| 31 |
#include "ircd.h" |
| 32 |
#include "conf.h" |
| 33 |
#include "hostmask.h" |
| 34 |
#include "numeric.h" |
| 35 |
#include "log.h" |
| 36 |
#include "s_misc.h" |
| 37 |
#include "send.h" |
| 38 |
#include "hash.h" |
| 39 |
#include "s_serv.h" |
| 40 |
#include "parse.h" |
| 41 |
#include "modules.h" |
| 42 |
#include "conf_db.h" |
| 43 |
#include "memory.h" |
| 44 |
|
| 45 |
|
| 46 |
static void |
| 47 |
check_kline(struct AddressRec *arec) |
| 48 |
{ |
| 49 |
dlink_node *ptr = NULL, *ptr_next = NULL; |
| 50 |
|
| 51 |
DLINK_FOREACH_SAFE(ptr, ptr_next, local_client_list.head) |
| 52 |
{ |
| 53 |
struct Client *client_p = ptr->data; |
| 54 |
|
| 55 |
if (IsDead(client_p)) |
| 56 |
continue; |
| 57 |
|
| 58 |
if (match(arec->username, client_p->username)) |
| 59 |
continue; |
| 60 |
|
| 61 |
switch (arec->masktype) |
| 62 |
{ |
| 63 |
case HM_IPV4: |
| 64 |
if (client_p->localClient->aftype == AF_INET) |
| 65 |
if (match_ipv4(&client_p->localClient->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits)) |
| 66 |
conf_try_ban(client_p, arec->conf); |
| 67 |
break; |
| 68 |
case HM_IPV6: |
| 69 |
if (client_p->localClient->aftype == AF_INET6) |
| 70 |
if (match_ipv6(&client_p->localClient->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits)) |
| 71 |
conf_try_ban(client_p, arec->conf); |
| 72 |
break; |
| 73 |
default: /* HM_HOST */ |
| 74 |
if (!match(arec->Mask.hostname, client_p->host)) |
| 75 |
conf_try_ban(client_p, arec->conf); |
| 76 |
break; |
| 77 |
} |
| 78 |
} |
| 79 |
} |
| 80 |
|
| 81 |
/* apply_tkline() |
| 82 |
* |
| 83 |
* inputs - |
| 84 |
* output - NONE |
| 85 |
* side effects - tkline as given is placed |
| 86 |
*/ |
| 87 |
static void |
| 88 |
m_kline_add_kline(struct Client *source_p, struct MaskItem *conf, |
| 89 |
time_t tkline_time) |
| 90 |
{ |
| 91 |
if (tkline_time) |
| 92 |
{ |
| 93 |
conf->until = CurrentTime + tkline_time; |
| 94 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
| 95 |
"%s added temporary %d min. K-Line for [%s@%s] [%s]", |
| 96 |
get_oper_name(source_p), tkline_time/60, |
| 97 |
conf->user, conf->host, |
| 98 |
conf->reason); |
| 99 |
sendto_one_notice(source_p, &me, ":Added temporary %d min. K-Line [%s@%s]", |
| 100 |
tkline_time/60, conf->user, conf->host); |
| 101 |
ilog(LOG_TYPE_KLINE, "%s added temporary %d min. K-Line for [%s@%s] [%s]", |
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get_oper_name(source_p), tkline_time/60, |
| 103 |
conf->user, conf->host, conf->reason); |
| 104 |
} |
| 105 |
else |
| 106 |
{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
| 108 |
"%s added K-Line for [%s@%s] [%s]", |
| 109 |
get_oper_name(source_p), |
| 110 |
conf->user, conf->host, conf->reason); |
| 111 |
sendto_one_notice(source_p, &me, ":Added K-Line [%s@%s]", |
| 112 |
conf->user, conf->host); |
| 113 |
ilog(LOG_TYPE_KLINE, "%s added K-Line for [%s@%s] [%s]", |
| 114 |
get_oper_name(source_p), conf->user, conf->host, conf->reason); |
| 115 |
} |
| 116 |
|
| 117 |
conf->setat = CurrentTime; |
| 118 |
SetConfDatabase(conf); |
| 119 |
|
| 120 |
check_kline(add_conf_by_address(CONF_KLINE, conf)); |
| 121 |
} |
| 122 |
|
| 123 |
/* static int remove_tkline_match(const char *host, const char *user) |
| 124 |
* Input: A hostname, a username to unkline. |
| 125 |
* Output: returns YES on success, NO if no tkline removed. |
| 126 |
* Side effects: Any matching tklines are removed. |
| 127 |
*/ |
| 128 |
static int |
| 129 |
remove_kline_match(const char *host, const char *user) |
| 130 |
{ |
| 131 |
struct irc_ssaddr iphost, *piphost; |
| 132 |
struct MaskItem *conf; |
| 133 |
int t = 0; |
| 134 |
int aftype = 0; |
| 135 |
|
| 136 |
if ((t = parse_netmask(host, &iphost, NULL)) != HM_HOST) |
| 137 |
{ |
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#ifdef IPV6 |
| 139 |
if (t == HM_IPV6) |
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aftype = AF_INET6; |
| 141 |
else |
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#endif |
| 143 |
aftype = AF_INET; |
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piphost = &iphost; |
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} |
| 146 |
else |
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piphost = NULL; |
| 148 |
|
| 149 |
if ((conf = find_conf_by_address(host, piphost, CONF_KLINE, aftype, user, NULL, 0))) |
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{ |
| 151 |
if (IsConfDatabase(conf)) |
| 152 |
{ |
| 153 |
delete_one_address_conf(host, conf); |
| 154 |
return 1; |
| 155 |
} |
| 156 |
} |
| 157 |
|
| 158 |
return 0; |
| 159 |
} |
| 160 |
|
| 161 |
/* already_placed_kline() |
| 162 |
* inputs - user to complain to, username & host to check for |
| 163 |
* outputs - returns 1 on existing K-line, 0 if doesn't exist |
| 164 |
* side effects - notifies source_p if the K-line already exists |
| 165 |
*/ |
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/* |
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* Note: This currently works if the new K-line is a special case of an |
| 168 |
* existing K-line, but not the other way round. To do that we would |
| 169 |
* have to walk the hash and check every existing K-line. -A1kmm. |
| 170 |
*/ |
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static int |
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already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int warn) |
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{ |
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const char *reason; |
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struct irc_ssaddr iphost, *piphost; |
| 176 |
struct MaskItem *conf = NULL; |
| 177 |
int t = 0; |
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int aftype = 0; |
| 179 |
|
| 180 |
if ((t = parse_netmask(lhost, &iphost, NULL)) != HM_HOST) |
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{ |
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#ifdef IPV6 |
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if (t == HM_IPV6) |
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aftype = AF_INET6; |
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else |
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#endif |
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aftype = AF_INET; |
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piphost = &iphost; |
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} |
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else |
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piphost = NULL; |
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|
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if ((conf = find_conf_by_address(lhost, piphost, CONF_KLINE, aftype, luser, NULL, 0))) |
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{ |
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if (warn) |
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{ |
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reason = conf->reason ? conf->reason : CONF_NOREASON; |
| 198 |
sendto_one_notice(source_p, &me, ":[%s@%s] already K-Lined by [%s@%s] - %s", |
| 199 |
luser, lhost, conf->user, conf->host, reason); |
| 200 |
} |
| 201 |
|
| 202 |
return 1; |
| 203 |
} |
| 204 |
|
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return 0; |
| 206 |
} |
| 207 |
|
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/* mo_kline() |
| 209 |
* |
| 210 |
* inputs - pointer to server |
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* - pointer to client |
| 212 |
* - parameter count |
| 213 |
* - parameter list |
| 214 |
* output - |
| 215 |
* side effects - k line is added |
| 216 |
*/ |
| 217 |
static int |
| 218 |
mo_kline(struct Client *source_p, int parc, char *parv[]) |
| 219 |
{ |
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char buffer[IRCD_BUFSIZE]; |
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char *reason = NULL; |
| 222 |
char *user = NULL; |
| 223 |
char *host = NULL; |
| 224 |
const char *current_date; |
| 225 |
char *target_server = NULL; |
| 226 |
struct MaskItem *conf; |
| 227 |
time_t tkline_time = 0; |
| 228 |
|
| 229 |
if (!HasOFlag(source_p, OPER_FLAG_K)) |
| 230 |
{ |
| 231 |
sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "kline"); |
| 232 |
return 0; |
| 233 |
} |
| 234 |
|
| 235 |
if (parse_aline("KLINE", source_p, parc, parv, AWILD, &user, &host, |
| 236 |
&tkline_time, &target_server, &reason) < 0) |
| 237 |
return 0; |
| 238 |
|
| 239 |
if (target_server != NULL) |
| 240 |
{ |
| 241 |
sendto_match_servs(source_p, target_server, CAP_KLN, "KLINE %s %lu %s %s :%s", |
| 242 |
target_server, (unsigned long)tkline_time, |
| 243 |
user, host, reason); |
| 244 |
|
| 245 |
/* Allow ON to apply local kline as well if it matches */ |
| 246 |
if (match(target_server, me.name)) |
| 247 |
return 0; |
| 248 |
} |
| 249 |
else |
| 250 |
cluster_a_line(source_p, "KLINE", CAP_KLN, SHARED_KLINE, |
| 251 |
"%d %s %s :%s", tkline_time, user, host, reason); |
| 252 |
|
| 253 |
if (already_placed_kline(source_p, user, host, 1)) |
| 254 |
return 0; |
| 255 |
|
| 256 |
current_date = smalldate(0); |
| 257 |
conf = conf_make(CONF_KLINE); |
| 258 |
|
| 259 |
conf->host = xstrdup(host); |
| 260 |
conf->user = xstrdup(user); |
| 261 |
|
| 262 |
if (tkline_time != 0) |
| 263 |
snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)", |
| 264 |
(int)(tkline_time/60), reason, current_date); |
| 265 |
else |
| 266 |
snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date); |
| 267 |
|
| 268 |
conf->reason = xstrdup(buffer); |
| 269 |
m_kline_add_kline(source_p, conf, tkline_time); |
| 270 |
return 0; |
| 271 |
} |
| 272 |
|
| 273 |
/* me_kline - handle remote kline. no propagation */ |
| 274 |
static int |
| 275 |
me_kline(struct Client *source_p, int parc, char *parv[]) |
| 276 |
{ |
| 277 |
char buffer[IRCD_BUFSIZE]; |
| 278 |
struct MaskItem *conf = NULL; |
| 279 |
int tkline_time = 0; |
| 280 |
const char *current_date; |
| 281 |
char *kuser, *khost, *kreason; |
| 282 |
|
| 283 |
if (parc != 6 || EmptyString(parv[5])) |
| 284 |
return 0; |
| 285 |
|
| 286 |
if (match(parv[1], me.name)) |
| 287 |
return 0; |
| 288 |
|
| 289 |
tkline_time = valid_tkline(parv[2], TK_SECONDS); |
| 290 |
kuser = parv[3]; |
| 291 |
khost = parv[4]; |
| 292 |
kreason = parv[5]; |
| 293 |
|
| 294 |
current_date = smalldate(0); |
| 295 |
|
| 296 |
if (HasFlag(source_p, FLAGS_SERVICE) || |
| 297 |
find_matching_name_conf(CONF_ULINE, source_p->servptr->name, |
| 298 |
source_p->username, source_p->host, |
| 299 |
SHARED_KLINE)) |
| 300 |
{ |
| 301 |
if (!IsClient(source_p) || |
| 302 |
already_placed_kline(source_p, kuser, khost, 1)) |
| 303 |
return 0; |
| 304 |
|
| 305 |
conf = conf_make(CONF_KLINE); |
| 306 |
conf->host = xstrdup(khost); |
| 307 |
conf->user = xstrdup(kuser); |
| 308 |
|
| 309 |
if (tkline_time != 0) |
| 310 |
snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)", |
| 311 |
(int)(tkline_time/60), kreason, current_date); |
| 312 |
else |
| 313 |
snprintf(buffer, sizeof(buffer), "%s (%s)", kreason, current_date); |
| 314 |
|
| 315 |
conf->reason = xstrdup(buffer); |
| 316 |
m_kline_add_kline(source_p, conf, tkline_time); |
| 317 |
} |
| 318 |
|
| 319 |
return 0; |
| 320 |
} |
| 321 |
|
| 322 |
static int |
| 323 |
ms_kline(struct Client *source_p, int parc, char *parv[]) |
| 324 |
{ |
| 325 |
if (parc != 6 || EmptyString(parv[5])) |
| 326 |
return 0; |
| 327 |
|
| 328 |
/* parv[0] parv[1] parv[2] parv[3] parv[4] parv[5] */ |
| 329 |
/* oper target_server tkline_time user host reason */ |
| 330 |
sendto_match_servs(source_p, parv[1], CAP_KLN, "KLINE %s %s %s %s :%s", |
| 331 |
parv[1], parv[2], parv[3], parv[4], parv[5]); |
| 332 |
|
| 333 |
return me_kline(source_p, parc, parv); |
| 334 |
} |
| 335 |
|
| 336 |
/* |
| 337 |
** mo_unkline |
| 338 |
** Added Aug 31, 1997 |
| 339 |
** common (Keith Fralick) fralick@gate.net |
| 340 |
** |
| 341 |
** parv[0] = command |
| 342 |
** parv[1] = address to remove |
| 343 |
* |
| 344 |
* |
| 345 |
*/ |
| 346 |
static int |
| 347 |
mo_unkline(struct Client *source_p, 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_numeric(source_p, &me, ERR_NOPRIVS, "unkline"); |
| 355 |
return 0; |
| 356 |
} |
| 357 |
|
| 358 |
if (EmptyString(parv[1])) |
| 359 |
{ |
| 360 |
sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "UNKLINE"); |
| 361 |
return 0; |
| 362 |
} |
| 363 |
|
| 364 |
if (parse_aline("UNKLINE", source_p, parc, parv, 0, &user, |
| 365 |
&host, NULL, &target_server, NULL) < 0) |
| 366 |
return 0; |
| 367 |
|
| 368 |
if (target_server != NULL) |
| 369 |
{ |
| 370 |
sendto_match_servs(source_p, target_server, CAP_UNKLN, |
| 371 |
"UNKLINE %s %s %s", |
| 372 |
target_server, user, host); |
| 373 |
|
| 374 |
/* Allow ON to apply local unkline as well if it matches */ |
| 375 |
if (match(target_server, me.name)) |
| 376 |
return 0; |
| 377 |
} |
| 378 |
else |
| 379 |
cluster_a_line(source_p, "UNKLINE", CAP_UNKLN, SHARED_UNKLINE, |
| 380 |
"%s %s", user, host); |
| 381 |
|
| 382 |
if (remove_kline_match(host, user)) |
| 383 |
{ |
| 384 |
sendto_one_notice(source_p, &me, ":K-Line for [%s@%s] is removed", |
| 385 |
user, host); |
| 386 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
| 387 |
"%s has removed the K-Line for: [%s@%s]", |
| 388 |
get_oper_name(source_p), user, host); |
| 389 |
ilog(LOG_TYPE_KLINE, "%s removed K-Line for [%s@%s]", |
| 390 |
get_oper_name(source_p), user, host); |
| 391 |
} |
| 392 |
else |
| 393 |
sendto_one_notice(source_p, &me, ":No K-Line for [%s@%s] found", |
| 394 |
user, host); |
| 395 |
return 0; |
| 396 |
} |
| 397 |
|
| 398 |
/* me_unkline() |
| 399 |
* |
| 400 |
* inputs - server |
| 401 |
* - client |
| 402 |
* - parc |
| 403 |
* - parv |
| 404 |
* outputs - none |
| 405 |
* side effects - if server is authorized, kline is removed |
| 406 |
* does not propagate message |
| 407 |
*/ |
| 408 |
static int |
| 409 |
me_unkline(struct Client *source_p, int parc, char *parv[]) |
| 410 |
{ |
| 411 |
const char *kuser, *khost; |
| 412 |
|
| 413 |
if (parc != 4) |
| 414 |
return 0; |
| 415 |
|
| 416 |
kuser = parv[2]; |
| 417 |
khost = parv[3]; |
| 418 |
|
| 419 |
if (!IsClient(source_p) || match(parv[1], me.name)) |
| 420 |
return 0; |
| 421 |
|
| 422 |
if (HasFlag(source_p, FLAGS_SERVICE) || |
| 423 |
find_matching_name_conf(CONF_ULINE, source_p->servptr->name, |
| 424 |
source_p->username, source_p->host, |
| 425 |
SHARED_UNKLINE)) |
| 426 |
{ |
| 427 |
if (remove_kline_match(khost, kuser)) |
| 428 |
{ |
| 429 |
sendto_one_notice(source_p, &me, ":K-Line for [%s@%s] is removed", |
| 430 |
kuser, khost); |
| 431 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
| 432 |
"%s has removed the K-Line for: [%s@%s]", |
| 433 |
get_oper_name(source_p), kuser, khost); |
| 434 |
ilog(LOG_TYPE_KLINE, "%s removed K-Line for [%s@%s]", |
| 435 |
get_oper_name(source_p), kuser, khost); |
| 436 |
} |
| 437 |
else |
| 438 |
sendto_one_notice(source_p, &me, ":No K-Line for [%s@%s] found", |
| 439 |
kuser, khost); |
| 440 |
} |
| 441 |
|
| 442 |
return 0; |
| 443 |
} |
| 444 |
|
| 445 |
/* ms_unkline - propagates and handles a remote unkline message */ |
| 446 |
static int |
| 447 |
ms_unkline(struct Client *source_p, int parc, char *parv[]) |
| 448 |
{ |
| 449 |
if (parc != 4) |
| 450 |
return 0; |
| 451 |
|
| 452 |
sendto_match_servs(source_p, parv[1], CAP_UNKLN, |
| 453 |
"UNKLINE %s %s %s", |
| 454 |
parv[1], parv[2], parv[3]); |
| 455 |
|
| 456 |
return me_unkline(source_p, parc, parv); |
| 457 |
} |
| 458 |
|
| 459 |
static struct Message kline_msgtab = |
| 460 |
{ |
| 461 |
"KLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0, |
| 462 |
{ m_unregistered, m_not_oper, ms_kline, me_kline, mo_kline, m_ignore } |
| 463 |
}; |
| 464 |
|
| 465 |
static struct Message unkline_msgtab = |
| 466 |
{ |
| 467 |
"UNKLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0, |
| 468 |
{ m_unregistered, m_not_oper, ms_unkline, me_unkline, mo_unkline, m_ignore } |
| 469 |
}; |
| 470 |
|
| 471 |
static void |
| 472 |
module_init(void) |
| 473 |
{ |
| 474 |
mod_add_cmd(&kline_msgtab); |
| 475 |
mod_add_cmd(&unkline_msgtab); |
| 476 |
add_capability("KLN", CAP_KLN, 1); |
| 477 |
add_capability("UNKLN", CAP_UNKLN, 1); |
| 478 |
} |
| 479 |
|
| 480 |
static void |
| 481 |
module_exit(void) |
| 482 |
{ |
| 483 |
mod_del_cmd(&kline_msgtab); |
| 484 |
mod_del_cmd(&unkline_msgtab); |
| 485 |
delete_capability("UNKLN"); |
| 486 |
delete_capability("KLN"); |
| 487 |
} |
| 488 |
|
| 489 |
struct module module_entry = |
| 490 |
{ |
| 491 |
.node = { NULL, NULL, NULL }, |
| 492 |
.name = NULL, |
| 493 |
.version = "$Revision$", |
| 494 |
.handle = NULL, |
| 495 |
.modinit = module_init, |
| 496 |
.modexit = module_exit, |
| 497 |
.flags = 0 |
| 498 |
}; |
