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 /* XXX sendto_one used for K-line reason */
156 sendto_one(acptr, ":%s %d %s :*** %s.", me.name, ERR_YOUREBANNEDCREEP,
157 acptr->name, gline->gl_reason);
159 /* let the ops know about it */
160 sendto_opmask_butone(0, SNO_GLINE, "G-line active for %s",
161 get_client_name(acptr, FALSE));
163 /* and get rid of him */
164 if ((tval = exit_client_msg(cptr, acptr, &me, "G-lined (%s)",
166 retval = tval; /* retain killed status */
175 propagate_gline(struct Client *cptr, struct Client *sptr, struct Gline *gline)
177 if (GlineIsLocal(gline) || (IsUser(sptr) && !gline->gl_lastmod))
180 if (gline->gl_lastmod)
181 sendcmdto_serv_butone(sptr, CMD_GLINE, cptr, "* %c%s%s%s %Tu %Tu :%s",
182 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
183 GlineIsBadChan(gline) ? "" : "@",
184 GlineIsBadChan(gline) ? "" : gline->gl_host,
185 gline->gl_expire - CurrentTime, gline->gl_lastmod,
188 sendcmdto_serv_butone(sptr, CMD_GLINE, cptr, "* %c%s%s%s %Tu :%s",
189 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
190 GlineIsBadChan(gline) ? "" : "@",
191 GlineIsBadChan(gline) ? "" : gline->gl_host,
192 gline->gl_expire - CurrentTime, gline->gl_reason);
196 gline_add(struct Client *cptr, struct Client *sptr, char *userhost,
197 char *reason, time_t expire, time_t lastmod, unsigned int flags)
199 struct Gline *agline;
201 assert(0 != userhost);
205 * You cannot set a negative (or zero) expire time, nor can you set an
206 * expiration time for greater than GLINE_MAX_EXPIRE.
208 if (!(flags & GLINE_FORCE) && (expire <= 0 || expire > GLINE_MAX_EXPIRE)) {
209 if (!IsServer(sptr) && MyConnect(sptr))
210 send_reply(sptr, ERR_BADEXPIRE, expire);
214 expire += CurrentTime; /* convert from lifetime to timestamp */
216 /* NO_OLD_GLINE allows *@#channel to work correctly */
218 if (*userhost == '#' || *userhost == '&' || *userhost == '+'
219 # ifndef NO_OLD_GLINE
220 || userhost[2] == '#' || userhost[2] == '&' || userhost[2] == '+'
221 # endif /* OLD_GLINE */
223 # ifndef LOCAL_BADCHAN
224 if (flags & GLINE_LOCAL)
227 flags |= GLINE_BADCHAN;
232 sendto_opmask_butone(0, SNO_GLINE, "%s adding %s %s for %s, expiring at "
234 IsServer(sptr) ? sptr->name : sptr->user->server->name,
235 flags & GLINE_LOCAL ? "local" : "global",
236 flags & GLINE_BADCHAN ? "BADCHAN" : "GLINE", userhost,
237 expire + TSoffset, reason);
242 write_log(GPATH, "# " TIME_T_FMT " %s adding %s %s for %s, expiring at "
243 TIME_T_FMT ": %s\n", TStime(), sptr->name,
244 flags & GLINE_LOCAL ? "local" : "global",
245 flags & GLINE_BADCHAN ? "BADCHAN" : "GLINE", userhost,
246 expire + TSoffset, reason);
248 write_log(GPATH, "# " TIME_T_FMT " %s!%s@%s adding %s %s for %s, "
249 "expiring at " TIME_T_FMT ": %s\n", TStime(), sptr->name,
250 sptr->user->username, sptr->user->host,
251 flags & GLINE_LOCAL ? "local" : "global",
252 flags & GLINE_BADCHAN ? "BADCHAN" : "GLINE", userhost,
253 expire + TSoffset, reason);
257 agline = make_gline(userhost, reason, expire, lastmod, flags);
259 if (!agline) /* if it overlapped, silently return */
262 propagate_gline(cptr, sptr, agline);
264 if (GlineIsBadChan(agline))
268 /* this can be inserted into the conf */
269 write_log(GPATH, "%c:%s:%s:%s\n", GlineIsIpMask(agline) ? 'k' : 'K',
270 GlineHost(agline), GlineReason(agline), GlineUser(agline));
273 return do_gline(cptr, sptr, agline); /* knock off users if necessary */
277 gline_activate(struct Client *cptr, struct Client *sptr, struct Gline *gline,
278 time_t lastmod, unsigned int flags)
280 unsigned int saveflags = 0;
283 assert(!GlineIsLocal(gline));
285 saveflags = gline->gl_flags;
287 if (flags & GLINE_LOCAL)
288 gline->gl_flags &= ~GLINE_LDEACT;
290 gline->gl_flags |= GLINE_ACTIVE;
292 if (gline->gl_lastmod >= lastmod) /* force lastmod to increase */
295 gline->gl_lastmod = lastmod;
298 if ((saveflags & GLINE_ACTMASK) == GLINE_ACTIVE)
299 return 0; /* was active to begin with */
301 /* Inform ops and log it */
302 sendto_opmask_butone(0, SNO_GLINE, "%s activating global %s for %s%s%s, "
303 "expiring at %Tu: %s",
304 IsServer(sptr) ? sptr->name : sptr->user->server->name,
305 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
306 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
307 GlineIsBadChan(gline) ? "" : gline->gl_host,
308 gline->gl_expire + TSoffset, gline->gl_reason);
312 write_log(GPATH, "# " TIME_T_FMT " %s activating global %s for %s%s%s, "
313 "expiring at " TIME_T_FMT ": %s\n", TStime(), sptr->name,
314 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
315 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
316 GlineIsBadChan(gline) ? "" : gline->gl_host,
317 gline->gl_expire + TSoffset, gline->gl_reason);
319 write_log(GPATH, "# " TIME_T_FMT " %s!%s@%s activating %s for "
320 "%s%s%s, expiring at " TIME_T_FMT ": %s\n", TStime(), sptr->name,
321 sptr->user->username, sptr->user->host,
322 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
323 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
324 GlineIsBadChan(gline) ? "" : gline->gl_host,
325 gline->gl_expire + TSoffset, gline->gl_reason);
328 propagate_gline(cptr, sptr, gline);
330 return GlineIsBadChan(gline) ? 0 : do_gline(cptr, sptr, gline);
334 gline_deactivate(struct Client *cptr, struct Client *sptr, struct Gline *gline,
335 time_t lastmod, unsigned int flags)
337 unsigned int saveflags = 0;
341 saveflags = gline->gl_flags;
343 if (!GlineIsLocal(gline)) {
344 if (flags & GLINE_LOCAL)
345 gline->gl_flags |= GLINE_LDEACT;
347 gline->gl_flags &= ~GLINE_ACTIVE;
349 if (gline->gl_lastmod >= lastmod)
352 gline->gl_lastmod = lastmod;
355 if ((saveflags & GLINE_ACTMASK) != GLINE_ACTIVE)
356 return 0; /* was inactive to begin with */
359 /* Inform ops and log it */
360 sendto_opmask_butone(0, SNO_GLINE, "%s %s %s for %s%s%s, expiring at %Tu: "
362 IsServer(sptr) ? sptr->name : sptr->user->server->name,
363 GlineIsLocal(gline) ? "removing local" :
364 "deactivating global",
365 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
366 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
367 GlineIsBadChan(gline) ? "" : gline->gl_host,
368 gline->gl_expire + TSoffset, gline->gl_reason);
372 write_log(GPATH, "# " TIME_T_FMT " %s %s %s for %s%s%s, "
373 "expiring at " TIME_T_FMT ": %s\n", TStime(), sptr->name,
374 GlineIsLocal(gline) ? "removing local" : "deactivating global",
375 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
376 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
377 GlineIsBadChan(gline) ? "" : gline->gl_host,
378 gline->gl_expire + TSoffset, gline->gl_reason);
380 write_log(GPATH, "# " TIME_T_FMT " %s!%s@%s %s %s for "
381 "%s%s%s, expiring at " TIME_T_FMT ": %s\n", TStime(), sptr->name,
382 sptr->user->username, sptr->user->host,
383 GlineIsLocal(gline) ? "removing local" : "deactivating global",
384 GlineIsBadChan(gline) ? "BADCHAN" : "GLINE",
385 gline->gl_user, GlineIsBadChan(gline) ? "" : "@",
386 GlineIsBadChan(gline) ? "" : gline->gl_host,
387 gline->gl_expire + TSoffset, gline->gl_reason);
390 if (GlineIsLocal(gline))
393 propagate_gline(cptr, sptr, gline);
399 gline_find(char *userhost, unsigned int flags)
402 struct Gline *sgline;
403 char *user, *host, *t_uh;
405 if (flags & (GLINE_BADCHAN | GLINE_ANY)) {
406 for (gline = BadChanGlineList; gline; gline = sgline) {
407 sgline = gline->gl_next;
409 if (gline->gl_expire <= CurrentTime)
411 else if ((flags & GLINE_EXACT ? ircd_strcmp(gline->gl_user, userhost) :
412 match(gline->gl_user, userhost)) == 0)
417 if ((flags & (GLINE_BADCHAN | GLINE_ANY)) == GLINE_BADCHAN ||
418 *userhost == '#' || *userhost == '&' || *userhost == '+'
420 || userhost[2] == '#' || userhost[2] == '&' || userhost[2] == '+'
421 #endif /* NO_OLD_GLINE */
425 DupString(t_uh, userhost);
426 canon_userhost(t_uh, &user, &host, 0);
428 for (gline = GlobalGlineList; gline; gline = sgline) {
429 sgline = gline->gl_next;
431 if (gline->gl_expire <= CurrentTime)
433 else if (flags & GLINE_EXACT) {
434 if (ircd_strcmp(gline->gl_host, host) == 0 &&
435 ((!user && ircd_strcmp(gline->gl_user, "*") == 0) ||
436 ircd_strcmp(gline->gl_user, user) == 0))
439 if (match(gline->gl_host, host) == 0 &&
440 ((!user && ircd_strcmp(gline->gl_user, "*") == 0) ||
441 match(gline->gl_user, user) == 0))
452 gline_lookup(struct Client *cptr)
455 struct Gline *sgline;
457 for (gline = GlobalGlineList; gline; gline = sgline) {
458 sgline = gline->gl_next;
460 if (gline->gl_expire <= CurrentTime)
462 else if ((GlineIsIpMask(gline) ?
463 match(gline->gl_host, ircd_ntoa((const char *)&cptr->ip)) :
464 match(gline->gl_host, cptr->user->host)) == 0 &&
465 match(gline->gl_user, cptr->user->username) == 0)
473 gline_free(struct Gline *gline)
477 *gline->gl_prev_p = gline->gl_next; /* squeeze this gline out */
479 gline->gl_next->gl_prev_p = gline->gl_prev_p;
481 MyFree(gline->gl_user); /* free up the memory */
483 MyFree(gline->gl_host);
484 MyFree(gline->gl_reason);
489 gline_burst(struct Client *cptr)
492 struct Gline *sgline;
494 for (gline = GlobalGlineList; gline; gline = sgline) { /* all glines */
495 sgline = gline->gl_next;
497 if (gline->gl_expire <= CurrentTime) /* expire any that need expiring */
499 else if (!GlineIsLocal(gline) && gline->gl_lastmod)
500 sendcmdto_one(&me, CMD_GLINE, cptr, "* %c%s@%s %Tu %Tu :%s",
501 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
502 gline->gl_host, gline->gl_expire - CurrentTime,
503 gline->gl_lastmod, gline->gl_reason);
506 for (gline = BadChanGlineList; gline; gline = sgline) { /* all glines */
507 sgline = gline->gl_next;
509 if (gline->gl_expire <= CurrentTime) /* expire any that need expiring */
511 else if (!GlineIsLocal(gline) && gline->gl_lastmod)
512 sendcmdto_one(&me, CMD_GLINE, cptr, "* %c%s %Tu %Tu :%s",
513 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
514 gline->gl_expire - CurrentTime, gline->gl_lastmod,
520 gline_resend(struct Client *cptr, struct Gline *gline)
522 if (GlineIsLocal(gline) || !gline->gl_lastmod)
525 sendcmdto_one(&me, CMD_GLINE, cptr, "* %c%s%s%s %Tu %Tu :%s",
526 GlineIsRemActive(gline) ? '+' : '-', gline->gl_user,
527 GlineIsBadChan(gline) ? "" : "@",
528 GlineIsBadChan(gline) ? "" : gline->gl_host,
529 gline->gl_expire - CurrentTime, gline->gl_lastmod,
536 gline_list(struct Client *sptr, char *userhost)
539 struct Gline *sgline;
542 if (!(gline = gline_find(userhost, GLINE_ANY))) /* no such gline */
543 return send_reply(sptr, ERR_NOSUCHGLINE, userhost);
545 /* send gline information along */
546 send_reply(sptr, RPL_GLIST, gline->gl_user,
547 GlineIsBadChan(gline) ? "" : "@",
548 GlineIsBadChan(gline) ? "" : gline->gl_host,
549 gline->gl_expire + TSoffset,
550 GlineIsLocal(gline) ? me.name : "*",
551 GlineIsActive(gline) ? '+' : '-', gline->gl_reason);
553 for (gline = GlobalGlineList; gline; gline = sgline) {
554 sgline = gline->gl_next;
556 if (gline->gl_expire <= CurrentTime)
559 send_reply(sptr, RPL_GLIST, gline->gl_user, "@", gline->gl_host,
560 gline->gl_expire + TSoffset,
561 GlineIsLocal(gline) ? me.name : "*",
562 GlineIsActive(gline) ? '+' : '-', gline->gl_reason);
565 for (gline = BadChanGlineList; gline; gline = sgline) {
566 sgline = gline->gl_next;
568 if (gline->gl_expire <= CurrentTime)
571 send_reply(sptr, RPL_GLIST, gline->gl_user, "", "",
572 gline->gl_expire + TSoffset,
573 GlineIsLocal(gline) ? me.name : "*",
574 GlineIsActive(gline) ? '+' : '-', gline->gl_reason);
578 /* end of gline information */
579 return send_reply(sptr, RPL_ENDOFGLIST);
583 gline_stats(struct Client *sptr)
586 struct Gline *sgline;
588 for (gline = GlobalGlineList; gline; gline = sgline) {
589 sgline = gline->gl_next;
591 if (gline->gl_expire <= CurrentTime)
594 send_reply(sptr, RPL_STATSGLINE, 'G', gline->gl_user, gline->gl_host,
595 gline->gl_expire + TSoffset, gline->gl_reason);