2 * IRC - Internet Relay Chat, ircd/gline.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Finland
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 1, or (at your option)
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.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #include "ircd_alloc.h"
26 #include "ircd_reply.h"
27 #include "ircd_string.h"
38 #include "sys.h" /* FALSE bleah */
43 struct Gline* GlobalGlineList = 0;
44 struct Gline* BadChanGlineList = 0;
47 canon_userhost(char *userhost, char **user_p, char **host_p, char *def_user)
51 if (!(tmp = strchr(userhost, '@'))) {
62 make_gline(char *userhost, char *reason, time_t expire, time_t lastmod,
65 struct Gline *gline, *sgline, *after = 0;
68 if (!(flags & GLINE_BADCHAN)) { /* search for overlapping glines first */
69 canon_userhost(userhost, &user, &host, "*"); /* find user and host */
71 for (gline = GlobalGlineList; gline; gline = sgline) {
72 sgline = gline->gl_next;
74 if (gline->gl_expire <= CurrentTime)
76 else if ((gline->gl_flags & GLINE_LOCAL) != (flags & GLINE_LOCAL))
78 else if (!mmatch(gline->gl_user, user) && /* gline contains new mask */
79 !mmatch(gline->gl_host, host)) {
80 if (expire <= gline->gl_expire) /* will expire before wider gline */
83 after = gline; /* stick new gline after this one */
84 } else if (!mmatch(user, gline->gl_user) && /* new mask contains gline */
85 !mmatch(host, gline->gl_host) &&
86 gline->gl_expire <= expire) /* gline expires before new one */
87 gline_free(gline); /* save some memory */
91 gline = (struct Gline *)MyMalloc(sizeof(struct Gline)); /* alloc memory */
94 DupString(gline->gl_reason, reason); /* initialize gline... */
95 gline->gl_expire = expire;
96 gline->gl_lastmod = lastmod;
97 gline->gl_flags = flags & GLINE_MASK;
99 if (flags & GLINE_BADCHAN) { /* set a BADCHAN gline */
100 DupString(gline->gl_user, userhost); /* first, remember channel */
103 gline->gl_next = BadChanGlineList; /* then link it into list */
104 gline->gl_prev_p = &BadChanGlineList;
105 if (BadChanGlineList)
106 BadChanGlineList->gl_prev_p = &gline->gl_next;
107 BadChanGlineList = gline;
109 DupString(gline->gl_user, user); /* remember them... */
110 DupString(gline->gl_host, host);
112 if (check_if_ipmask(host)) /* mark if it's an IP mask */
113 gline->gl_flags |= GLINE_IPMASK;
116 gline->gl_next = after->gl_next;
117 gline->gl_prev_p = &after->gl_next;
119 after->gl_next->gl_prev_p = &gline->gl_next;
120 after->gl_next = gline;
122 gline->gl_next = GlobalGlineList; /* then link it into list */
123 gline->gl_prev_p = &GlobalGlineList;
125 GlobalGlineList->gl_prev_p = &gline->gl_next;
126 GlobalGlineList = gline;
134 do_gline(struct Client *cptr, struct Client *sptr, struct Gline *gline)
136 struct Client *acptr;
137 int fd, retval = 0, tval;
139 if (!GlineIsActive(gline)) /* no action taken on inactive glines */
142 for (fd = HighestFd; fd >= 0; --fd) {
146 if ((acptr = LocalClientArray[fd])) {
150 if ((GlineIsIpMask(gline) ? match(gline->gl_host, acptr->sock_ip) :
151 match(gline->gl_host, acptr->sockhost)) == 0 &&
152 (!acptr->user->username ||
153 match(gline->gl_user, acptr->user->username) == 0)) {
154 /* ok, here's one that got G-lined */
155 send_reply(acptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP, ":%s",
158 /* let the ops know about it */
159 sendto_opmask_butone(0, SNO_GLINE, "G-line active for %s",
160 get_client_name(acptr, FALSE));
162 /* and get rid of him */
163 if ((tval = exit_client_msg(cptr, acptr, &me, "G-lined (%s)",
165 retval = tval; /* retain killed status */
174 propagate_gline(struct Client *cptr, struct Client *sptr, struct Gline *gline)
176 if (GlineIsLocal(gline) || (IsUser(sptr) && !gline->gl_lastmod))
179 if (gline->gl_lastmod)
180 sendcmdto_serv_butone(sptr, CMD_GLINE, cptr, "* %c%s%s%s %Tu %Tu :%s",
181 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
182 GlineIsBadChan(gline) ? "" : "@",
183 GlineIsBadChan(gline) ? "" : gline->gl_host,
184 gline->gl_expire - CurrentTime, gline->gl_lastmod,
187 sendcmdto_serv_butone(sptr, CMD_GLINE, cptr, "* %c%s%s%s %Tu :%s",
188 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
189 GlineIsBadChan(gline) ? "" : "@",
190 GlineIsBadChan(gline) ? "" : gline->gl_host,
191 gline->gl_expire - CurrentTime, gline->gl_reason);
195 gline_add(struct Client *cptr, struct Client *sptr, char *userhost,
196 char *reason, time_t expire, time_t lastmod, unsigned int flags)
198 struct Gline *agline;
200 assert(0 != userhost);
204 * You cannot set a negative (or zero) expire time, nor can you set an
205 * expiration time for greater than GLINE_MAX_EXPIRE.
207 if (!(flags & GLINE_FORCE) && (expire <= 0 || expire > GLINE_MAX_EXPIRE)) {
208 if (!IsServer(sptr) && MyConnect(sptr))
209 send_reply(sptr, ERR_BADEXPIRE, expire);
213 expire += CurrentTime; /* convert from lifetime to timestamp */
215 /* NO_OLD_GLINE allows *@#channel to work correctly */
216 if (*userhost == '#' || *userhost == '&' || *userhost == '+'
217 # ifndef NO_OLD_GLINE
218 || userhost[2] == '#' || userhost[2] == '&' || userhost[2] == '+'
219 # endif /* OLD_GLINE */
221 # ifndef LOCAL_BADCHAN
222 if (flags & GLINE_LOCAL)
225 flags |= GLINE_BADCHAN;
229 sendto_opmask_butone(0, SNO_GLINE, "%s adding %s %s for %s, expiring at "
231 IsServer(sptr) ? sptr->name : sptr->user->server->name,
232 flags & GLINE_LOCAL ? "local" : "global",
233 flags & GLINE_BADCHAN ? "BADCHAN" : "GLINE", userhost,
234 expire + TSoffset, reason);
238 write_log(GPATH, "# %Tu %C adding %s %s for %s, expiring at %Tu: %s\n",
239 TStime(), sptr, flags & GLINE_LOCAL ? "local" : "global",
240 flags & GLINE_BADCHAN ? "BADCHAN" : "GLINE", userhost,
241 expire + TSoffset, reason);
245 agline = make_gline(userhost, reason, expire, lastmod, flags);
247 if (!agline) /* if it overlapped, silently return */
250 propagate_gline(cptr, sptr, agline);
252 if (GlineIsBadChan(agline))
256 /* this can be inserted into the conf */
257 write_log(GPATH, "%c:%s:%s:%s\n", GlineIsIpMask(agline) ? 'k' : 'K',
258 GlineHost(agline), GlineReason(agline), GlineUser(agline));
261 return do_gline(cptr, sptr, agline); /* knock off users if necessary */
265 gline_activate(struct Client *cptr, struct Client *sptr, struct Gline *gline,
266 time_t lastmod, unsigned int flags)
268 unsigned int saveflags = 0;
271 assert(!GlineIsLocal(gline));
273 saveflags = gline->gl_flags;
275 if (flags & GLINE_LOCAL)
276 gline->gl_flags &= ~GLINE_LDEACT;
278 gline->gl_flags |= GLINE_ACTIVE;
280 if (gline->gl_lastmod >= lastmod) /* force lastmod to increase */
283 gline->gl_lastmod = lastmod;
286 if ((saveflags & GLINE_ACTMASK) == GLINE_ACTIVE)
287 return 0; /* was active to begin with */
289 /* Inform ops and log it */
290 sendto_opmask_butone(0, SNO_GLINE, "%s activating global %s for %s%s%s, "
291 "expiring at %Tu: %s",
292 IsServer(sptr) ? sptr->name : sptr->user->server->name,
293 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
294 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
295 GlineIsBadChan(gline) ? "" : gline->gl_host,
296 gline->gl_expire + TSoffset, gline->gl_reason);
299 write_log(GPATH, "# %Tu %C activating global %s for %s%s%s, expiring at "
300 "%Tu: %s\n", TStime(), sptr,
301 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
302 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
303 GlineIsBadChan(gline) ? "" : gline->gl_host,
304 gline->gl_expire + TSoffset, gline->gl_reason);
307 propagate_gline(cptr, sptr, gline);
309 return GlineIsBadChan(gline) ? 0 : do_gline(cptr, sptr, gline);
313 gline_deactivate(struct Client *cptr, struct Client *sptr, struct Gline *gline,
314 time_t lastmod, unsigned int flags)
316 unsigned int saveflags = 0;
320 saveflags = gline->gl_flags;
322 if (!GlineIsLocal(gline)) {
323 if (flags & GLINE_LOCAL)
324 gline->gl_flags |= GLINE_LDEACT;
326 gline->gl_flags &= ~GLINE_ACTIVE;
328 if (gline->gl_lastmod >= lastmod)
331 gline->gl_lastmod = lastmod;
334 if ((saveflags & GLINE_ACTMASK) != GLINE_ACTIVE)
335 return 0; /* was inactive to begin with */
338 /* Inform ops and log it */
339 sendto_opmask_butone(0, SNO_GLINE, "%s %s %s for %s%s%s, expiring at %Tu: "
341 IsServer(sptr) ? sptr->name : sptr->user->server->name,
342 GlineIsLocal(gline) ? "removing local" :
343 "deactivating global",
344 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
345 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
346 GlineIsBadChan(gline) ? "" : gline->gl_host,
347 gline->gl_expire + TSoffset, gline->gl_reason);
350 write_log(GPATH, "# %Tu %C %s %s for %s%s%s, expiring at %Tu: %s\n",
352 GlineIsLocal(gline) ? "removing local" : "deactivating global",
353 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
354 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
355 GlineIsBadChan(gline) ? "" : gline->gl_host,
356 gline->gl_expire + TSoffset, gline->gl_reason);
359 if (GlineIsLocal(gline))
362 propagate_gline(cptr, sptr, gline);
368 gline_find(char *userhost, unsigned int flags)
371 struct Gline *sgline;
372 char *user, *host, *t_uh;
374 if (flags & (GLINE_BADCHAN | GLINE_ANY)) {
375 for (gline = BadChanGlineList; gline; gline = sgline) {
376 sgline = gline->gl_next;
378 if (gline->gl_expire <= CurrentTime)
380 else if ((flags & GLINE_EXACT ? ircd_strcmp(gline->gl_user, userhost) :
381 match(gline->gl_user, userhost)) == 0)
386 if ((flags & (GLINE_BADCHAN | GLINE_ANY)) == GLINE_BADCHAN ||
387 *userhost == '#' || *userhost == '&' || *userhost == '+'
389 || userhost[2] == '#' || userhost[2] == '&' || userhost[2] == '+'
390 #endif /* NO_OLD_GLINE */
394 DupString(t_uh, userhost);
395 canon_userhost(t_uh, &user, &host, 0);
397 for (gline = GlobalGlineList; gline; gline = sgline) {
398 sgline = gline->gl_next;
400 if (gline->gl_expire <= CurrentTime)
402 else if (flags & GLINE_EXACT) {
403 if (ircd_strcmp(gline->gl_host, host) == 0 &&
404 ((!user && ircd_strcmp(gline->gl_user, "*") == 0) ||
405 ircd_strcmp(gline->gl_user, user) == 0))
408 if (match(gline->gl_host, host) == 0 &&
409 ((!user && ircd_strcmp(gline->gl_user, "*") == 0) ||
410 match(gline->gl_user, user) == 0))
421 gline_lookup(struct Client *cptr)
424 struct Gline *sgline;
426 for (gline = GlobalGlineList; gline; gline = sgline) {
427 sgline = gline->gl_next;
429 if (gline->gl_expire <= CurrentTime)
431 else if ((GlineIsIpMask(gline) ?
432 match(gline->gl_host, ircd_ntoa((const char *)&cptr->ip)) :
433 match(gline->gl_host, cptr->user->host)) == 0 &&
434 match(gline->gl_user, cptr->user->username) == 0)
442 gline_free(struct Gline *gline)
446 *gline->gl_prev_p = gline->gl_next; /* squeeze this gline out */
448 gline->gl_next->gl_prev_p = gline->gl_prev_p;
450 MyFree(gline->gl_user); /* free up the memory */
452 MyFree(gline->gl_host);
453 MyFree(gline->gl_reason);
458 gline_burst(struct Client *cptr)
461 struct Gline *sgline;
463 for (gline = GlobalGlineList; gline; gline = sgline) { /* all glines */
464 sgline = gline->gl_next;
466 if (gline->gl_expire <= CurrentTime) /* expire any that need expiring */
468 else if (!GlineIsLocal(gline) && gline->gl_lastmod)
469 sendcmdto_one(&me, CMD_GLINE, cptr, "* %c%s@%s %Tu %Tu :%s",
470 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
471 gline->gl_host, gline->gl_expire - CurrentTime,
472 gline->gl_lastmod, gline->gl_reason);
475 for (gline = BadChanGlineList; gline; gline = sgline) { /* all glines */
476 sgline = gline->gl_next;
478 if (gline->gl_expire <= CurrentTime) /* expire any that need expiring */
480 else if (!GlineIsLocal(gline) && gline->gl_lastmod)
481 sendcmdto_one(&me, CMD_GLINE, cptr, "* %c%s %Tu %Tu :%s",
482 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
483 gline->gl_expire - CurrentTime, gline->gl_lastmod,
489 gline_resend(struct Client *cptr, struct Gline *gline)
491 if (GlineIsLocal(gline) || !gline->gl_lastmod)
494 sendcmdto_one(&me, CMD_GLINE, cptr, "* %c%s%s%s %Tu %Tu :%s",
495 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
496 GlineIsBadChan(gline) ? "" : "@",
497 GlineIsBadChan(gline) ? "" : gline->gl_host,
498 gline->gl_expire - CurrentTime, gline->gl_lastmod,
505 gline_list(struct Client *sptr, char *userhost)
508 struct Gline *sgline;
511 if (!(gline = gline_find(userhost, GLINE_ANY))) /* no such gline */
512 return send_reply(sptr, ERR_NOSUCHGLINE, userhost);
514 /* send gline information along */
515 send_reply(sptr, RPL_GLIST, gline->gl_user,
516 GlineIsBadChan(gline) ? "" : "@",
517 GlineIsBadChan(gline) ? "" : gline->gl_host,
518 gline->gl_expire + TSoffset,
519 GlineIsLocal(gline) ? me.name : "*",
520 GlineIsActive(gline) ? '+' : '-', gline->gl_reason);
522 for (gline = GlobalGlineList; gline; gline = sgline) {
523 sgline = gline->gl_next;
525 if (gline->gl_expire <= CurrentTime)
528 send_reply(sptr, RPL_GLIST, gline->gl_user, "@", gline->gl_host,
529 gline->gl_expire + TSoffset,
530 GlineIsLocal(gline) ? me.name : "*",
531 GlineIsActive(gline) ? '+' : '-', gline->gl_reason);
534 for (gline = BadChanGlineList; gline; gline = sgline) {
535 sgline = gline->gl_next;
537 if (gline->gl_expire <= CurrentTime)
540 send_reply(sptr, RPL_GLIST, gline->gl_user, "", "",
541 gline->gl_expire + TSoffset,
542 GlineIsLocal(gline) ? me.name : "*",
543 GlineIsActive(gline) ? '+' : '-', gline->gl_reason);
547 /* end of gline information */
548 return send_reply(sptr, RPL_ENDOFGLIST);
552 gline_stats(struct Client *sptr)
555 struct Gline *sgline;
557 for (gline = GlobalGlineList; gline; gline = sgline) {
558 sgline = gline->gl_next;
560 if (gline->gl_expire <= CurrentTime)
563 send_reply(sptr, RPL_STATSGLINE, 'G', gline->gl_user, gline->gl_host,
564 gline->gl_expire + TSoffset, gline->gl_reason);