1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
19 #include "inspircd_config.h"
21 #include "inspircd_io.h"
24 #include <sys/errno.h>
28 #include <ext/hash_map>
45 #include "inspstring.h"
46 #include "helperfuncs.h"
49 #include "cull_list.h"
51 extern ServerConfig *Config;
54 extern std::vector<Module*> modules;
55 extern std::vector<ircd_module*> factory;
56 extern ServerConfig* Config;
57 extern user_hash clientlist;
58 extern std::vector<userrec*> local_users;
60 /* Version two, now with optimized expiry!
62 * Because the old way was horrendously slow, the new way of expiring xlines is very
63 * very efficient. I have improved the efficiency of the algorithm in two ways:
65 * (1) There are now two lists of items for each linetype. One list holds temporary
66 * items, and the other list holds permenant items (ones which will expire).
67 * Items which are on the permenant list are NEVER checked at all by the
68 * expire_lines() function.
69 * (2) The temporary xline lists are always kept in strict numerical order, keyed by
70 * current time + duration. This means that the line which is due to expire the
71 * soonest is always pointed at by vector::begin(), so a simple while loop can
72 * very efficiently, very quickly and above all SAFELY pick off the first few
73 * items in the vector which need zapping.
82 /* Lists for temporary lines with an expiry time */
84 std::vector<KLine> klines;
85 std::vector<GLine> glines;
86 std::vector<ZLine> zlines;
87 std::vector<QLine> qlines;
88 std::vector<ELine> elines;
90 /* Seperate lists for perm XLines that isnt checked by expiry functions */
92 std::vector<KLine> pklines;
93 std::vector<GLine> pglines;
94 std::vector<ZLine> pzlines;
95 std::vector<QLine> pqlines;
96 std::vector<ELine> pelines;
99 bool GSortComparison ( const GLine one, const GLine two );
100 bool ZSortComparison ( const ZLine one, const ZLine two );
101 bool ESortComparison ( const ELine one, const ELine two );
102 bool QSortComparison ( const QLine one, const QLine two );
103 bool KSortComparison ( const KLine one, const KLine two );
105 // Reads the default bans from the config file.
106 // only a very small number of bans are defined
107 // this way these days, such as qlines against
108 // services nicks, etc.
110 void read_xline_defaults()
117 for (int i = 0; i < Config->ConfValueEnum("badip",&Config->config_f); i++)
119 Config->ConfValue("badip","ipmask",i,ipmask,&Config->config_f);
120 Config->ConfValue("badip","reason",i,reason,&Config->config_f);
121 add_zline(0,"<Config>",reason,ipmask);
122 log(DEBUG,"Read Z line (badip tag): ipmask=%s reason=%s",ipmask,reason);
125 for (int i = 0; i < Config->ConfValueEnum("badnick",&Config->config_f); i++)
127 Config->ConfValue("badnick","nick",i,nick,&Config->config_f);
128 Config->ConfValue("badnick","reason",i,reason,&Config->config_f);
129 add_qline(0,"<Config>",reason,nick);
130 log(DEBUG,"Read Q line (badnick tag): nick=%s reason=%s",nick,reason);
133 for (int i = 0; i < Config->ConfValueEnum("badhost",&Config->config_f); i++)
135 Config->ConfValue("badhost","host",i,host,&Config->config_f);
136 Config->ConfValue("badhost","reason",i,reason,&Config->config_f);
137 add_kline(0,"<Config>",reason,host);
138 log(DEBUG,"Read K line (badhost tag): host=%s reason=%s",host,reason);
140 for (int i = 0; i < Config->ConfValueEnum("exception",&Config->config_f); i++)
142 Config->ConfValue("exception","host",i,host,&Config->config_f);
143 Config->ConfValue("exception","reason",i,reason,&Config->config_f);
144 add_eline(0,"<Config>",reason,host);
145 log(DEBUG,"Read E line (exception tag): host=%s reason=%s",host,reason);
151 bool add_gline(long duration, const char* source,const char* reason,const char* hostmask)
153 bool ret = del_gline(hostmask);
155 item.duration = duration;
156 strlcpy(item.hostmask,hostmask,199);
157 strlcpy(item.reason,reason,MAXBUF);
158 strlcpy(item.source,source,255);
160 item.set_time = TIME;
163 glines.push_back(item);
164 sort(glines.begin(), glines.end(),GSortComparison);
168 pglines.push_back(item);
173 // adds an e:line (exception to bans)
175 bool add_eline(long duration, const char* source, const char* reason, const char* hostmask)
177 bool ret = del_eline(hostmask);
179 item.duration = duration;
180 strlcpy(item.hostmask,hostmask,199);
181 strlcpy(item.reason,reason,MAXBUF);
182 strlcpy(item.source,source,255);
184 item.set_time = TIME;
187 elines.push_back(item);
188 sort(elines.begin(), elines.end(),ESortComparison);
192 pelines.push_back(item);
199 bool add_qline(long duration, const char* source, const char* reason, const char* nickname)
201 bool ret = del_qline(nickname);
203 item.duration = duration;
204 strlcpy(item.nick,nickname,63);
205 strlcpy(item.reason,reason,MAXBUF);
206 strlcpy(item.source,source,255);
208 item.is_global = false;
209 item.set_time = TIME;
212 qlines.push_back(item);
213 sort(qlines.begin(), qlines.end(),QSortComparison);
217 pqlines.push_back(item);
224 bool add_zline(long duration, const char* source, const char* reason, const char* ipaddr)
226 bool ret = del_zline(ipaddr);
228 item.duration = duration;
229 if (strchr(ipaddr,'@'))
231 while (*ipaddr != '@')
235 strlcpy(item.ipaddr,ipaddr,39);
236 strlcpy(item.reason,reason,MAXBUF);
237 strlcpy(item.source,source,255);
239 item.is_global = false;
240 item.set_time = TIME;
243 zlines.push_back(item);
244 sort(zlines.begin(), zlines.end(),ZSortComparison);
248 pzlines.push_back(item);
255 bool add_kline(long duration, const char* source, const char* reason, const char* hostmask)
257 bool ret = del_kline(hostmask);
259 item.duration = duration;
260 strlcpy(item.hostmask,hostmask,200);
261 strlcpy(item.reason,reason,MAXBUF);
262 strlcpy(item.source,source,255);
264 item.set_time = TIME;
267 klines.push_back(item);
268 sort(klines.begin(), klines.end(),KSortComparison);
272 pklines.push_back(item);
277 // deletes a g:line, returns true if the line existed and was removed
279 bool del_gline(const char* hostmask)
281 for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
283 if (!strcasecmp(hostmask,i->hostmask))
289 for (std::vector<GLine>::iterator i = pglines.begin(); i != pglines.end(); i++)
291 if (!strcasecmp(hostmask,i->hostmask))
300 // deletes a e:line, returns true if the line existed and was removed
302 bool del_eline(const char* hostmask)
304 for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
306 if (!strcasecmp(hostmask,i->hostmask))
312 for (std::vector<ELine>::iterator i = pelines.begin(); i != pelines.end(); i++)
314 if (!strcasecmp(hostmask,i->hostmask))
323 // deletes a q:line, returns true if the line existed and was removed
325 bool del_qline(const char* nickname)
327 for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
329 if (!strcasecmp(nickname,i->nick))
335 for (std::vector<QLine>::iterator i = pqlines.begin(); i != pqlines.end(); i++)
337 if (!strcasecmp(nickname,i->nick))
346 bool qline_make_global(const char* nickname)
348 for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
350 if (!strcasecmp(nickname,i->nick))
359 bool zline_make_global(const char* ipaddr)
361 for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
363 if (!strcasecmp(ipaddr,i->ipaddr))
372 // deletes a z:line, returns true if the line existed and was removed
374 bool del_zline(const char* ipaddr)
376 for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
378 if (!strcasecmp(ipaddr,i->ipaddr))
384 for (std::vector<ZLine>::iterator i = pzlines.begin(); i != pzlines.end(); i++)
386 if (!strcasecmp(ipaddr,i->ipaddr))
395 // deletes a k:line, returns true if the line existed and was removed
397 bool del_kline(const char* hostmask)
399 for (std::vector<KLine>::iterator i = klines.begin(); i != klines.end(); i++)
401 if (!strcasecmp(hostmask,i->hostmask))
407 for (std::vector<KLine>::iterator i = pklines.begin(); i != pklines.end(); i++)
409 if (!strcasecmp(hostmask,i->hostmask))
418 // returns a pointer to the reason if a nickname matches a qline, NULL if it didnt match
420 char* matches_qline(const char* nick)
422 if ((qlines.empty()) && (pqlines.empty()))
424 for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
425 if (match(nick,i->nick))
427 for (std::vector<QLine>::iterator i = pqlines.begin(); i != pqlines.end(); i++)
428 if (match(nick,i->nick))
433 // returns a pointer to the reason if a host matches a gline, NULL if it didnt match
435 char* matches_gline(const char* host)
437 if ((glines.empty()) && (pglines.empty()))
439 for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
440 if (match(host,i->hostmask))
442 for (std::vector<GLine>::iterator i = pglines.begin(); i != pglines.end(); i++)
443 if (match(host,i->hostmask))
448 char* matches_exception(const char* host)
450 if ((elines.empty()) && (pelines.empty()))
453 snprintf(host2,MAXBUF,"*@%s",host);
454 for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
455 if ((match(host,i->hostmask)) || (match(host2,i->hostmask)))
457 for (std::vector<ELine>::iterator i = pelines.begin(); i != pelines.end(); i++)
458 if ((match(host,i->hostmask)) || (match(host2,i->hostmask)))
464 void gline_set_creation_time(char* host, time_t create_time)
466 for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
468 if (!strcasecmp(host,i->hostmask))
470 i->set_time = create_time;
474 for (std::vector<GLine>::iterator i = pglines.begin(); i != pglines.end(); i++)
476 if (!strcasecmp(host,i->hostmask))
478 i->set_time = create_time;
485 void eline_set_creation_time(char* host, time_t create_time)
487 for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
489 if (!strcasecmp(host,i->hostmask))
491 i->set_time = create_time;
495 for (std::vector<ELine>::iterator i = pelines.begin(); i != pelines.end(); i++)
497 if (!strcasecmp(host,i->hostmask))
499 i->set_time = create_time;
506 void qline_set_creation_time(char* nick, time_t create_time)
508 for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
510 if (!strcasecmp(nick,i->nick))
512 i->set_time = create_time;
516 for (std::vector<QLine>::iterator i = pqlines.begin(); i != pqlines.end(); i++)
518 if (!strcasecmp(nick,i->nick))
520 i->set_time = create_time;
527 void zline_set_creation_time(char* ip, time_t create_time)
529 for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
531 if (!strcasecmp(ip,i->ipaddr))
533 i->set_time = create_time;
537 for (std::vector<ZLine>::iterator i = pzlines.begin(); i != pzlines.end(); i++)
539 if (!strcasecmp(ip,i->ipaddr))
541 i->set_time = create_time;
548 // returns a pointer to the reason if an ip address matches a zline, NULL if it didnt match
550 char* matches_zline(const char* ipaddr)
552 if ((zlines.empty()) && (pzlines.empty()))
554 for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
555 if (match(ipaddr,i->ipaddr))
557 for (std::vector<ZLine>::iterator i = pzlines.begin(); i != pzlines.end(); i++)
558 if (match(ipaddr,i->ipaddr))
563 // returns a pointer to the reason if a host matches a kline, NULL if it didnt match
565 char* matches_kline(const char* host)
567 if ((klines.empty()) && (pklines.empty()))
569 for (std::vector<KLine>::iterator i = klines.begin(); i != klines.end(); i++)
570 if (match(host,i->hostmask))
572 for (std::vector<KLine>::iterator i = pklines.begin(); i != pklines.end(); i++)
573 if (match(host,i->hostmask))
578 bool GSortComparison ( const GLine one, const GLine two )
580 return (one.duration + one.set_time) < (two.duration + two.set_time);
583 bool ESortComparison ( const ELine one, const ELine two )
585 return (one.duration + one.set_time) < (two.duration + two.set_time);
588 bool ZSortComparison ( const ZLine one, const ZLine two )
590 return (one.duration + one.set_time) < (two.duration + two.set_time);
593 bool KSortComparison ( const KLine one, const KLine two )
595 return (one.duration + one.set_time) < (two.duration + two.set_time);
598 bool QSortComparison ( const QLine one, const QLine two )
600 return (one.duration + one.set_time) < (two.duration + two.set_time);
603 // removes lines that have expired
607 time_t current = TIME;
609 /* Because we now store all our XLines in sorted order using (i->duration + i->set_time) as a key, this
610 * means that to expire the XLines we just need to do a while, picking off the top few until there are
611 * none left at the head of the queue that are after the current time.
614 while ((glines.size()) && (current > (glines.begin()->duration + glines.begin()->set_time)))
616 std::vector<GLine>::iterator i = glines.begin();
617 WriteOpers("Expiring timed G-Line %s (set by %s %d seconds ago)",i->hostmask,i->source,i->duration);
621 while ((elines.size()) && (current > (elines.begin()->duration + elines.begin()->set_time)))
623 std::vector<ELine>::iterator i = elines.begin();
624 WriteOpers("Expiring timed E-Line %s (set by %s %d seconds ago)",i->hostmask,i->source,i->duration);
628 while ((zlines.size()) && (current > (zlines.begin()->duration + zlines.begin()->set_time)))
630 std::vector<ZLine>::iterator i = zlines.begin();
631 WriteOpers("Expiring timed Z-Line %s (set by %s %d seconds ago)",i->ipaddr,i->source,i->duration);
635 while ((klines.size()) && (current > (klines.begin()->duration + klines.begin()->set_time)))
637 std::vector<KLine>::iterator i = klines.begin();
638 WriteOpers("Expiring timed K-Line %s (set by %s %d seconds ago)",i->hostmask,i->source,i->duration);
642 while ((qlines.size()) && (current > (qlines.begin()->duration + qlines.begin()->set_time)))
644 std::vector<QLine>::iterator i = qlines.begin();
645 WriteOpers("Expiring timed Q-Line %s (set by %s %d seconds ago)",i->nick,i->source,i->duration);
651 // applies lines, removing clients and changing nicks etc as applicable
653 void apply_lines(const int What)
658 if ((!glines.size()) && (!klines.size()) && (!zlines.size()) && (!qlines.size()) &&
659 (!pglines.size()) && (!pklines.size()) && (!pzlines.size()) && (!pqlines.size()))
662 CullList* Goners = new CullList();
664 for (std::vector<userrec*>::const_iterator u2 = local_users.begin(); u2 != local_users.end(); u2++)
666 userrec* u = (userrec*)(*u2);
668 if (elines.size() || pelines.size())
670 // ignore people matching exempts
671 if (matches_exception(host))
674 if ((What & APPLY_GLINES) && (glines.size() || pglines.size()))
676 if ((check = matches_gline(host)))
678 snprintf(reason,MAXBUF,"G-Lined: %s",check);
679 Goners->AddItem(u,reason);
682 if ((What & APPLY_KLINES) && (klines.size() || pklines.size()))
684 if ((check = matches_kline(host)))
686 snprintf(reason,MAXBUF,"K-Lined: %s",check);
687 Goners->AddItem(u,reason);
690 if ((What & APPLY_QLINES) && (qlines.size() || pqlines.size()))
692 if ((check = matches_qline(u->nick)))
694 snprintf(reason,MAXBUF,"Matched Q-Lined nick: %s",check);
695 Goners->AddItem(u,reason);
698 if ((What & APPLY_ZLINES) && (zlines.size() || pzlines.size()))
700 if ((check = matches_zline((char*)inet_ntoa(u->ip4))))
702 snprintf(reason,MAXBUF,"Z-Lined: %s",check);
703 Goners->AddItem(u,reason);
712 void stats_k(userrec* user)
714 for (std::vector<KLine>::iterator i = klines.begin(); i != klines.end(); i++)
715 WriteServ(user->fd,"216 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);
716 for (std::vector<KLine>::iterator i = pklines.begin(); i != pklines.end(); i++)
717 WriteServ(user->fd,"216 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);
720 void stats_g(userrec* user)
722 for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
723 WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);
724 for (std::vector<GLine>::iterator i = pglines.begin(); i != pglines.end(); i++)
725 WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);
728 void stats_q(userrec* user)
730 for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
731 WriteServ(user->fd,"217 %s :%s %d %d %s %s",user->nick,i->nick,i->set_time,i->duration,i->source,i->reason);
732 for (std::vector<QLine>::iterator i = pqlines.begin(); i != pqlines.end(); i++)
733 WriteServ(user->fd,"217 %s :%s %d %d %s %s",user->nick,i->nick,i->set_time,i->duration,i->source,i->reason);
736 void stats_z(userrec* user)
738 for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
739 WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->ipaddr,i->set_time,i->duration,i->source,i->reason);
740 for (std::vector<ZLine>::iterator i = pzlines.begin(); i != pzlines.end(); i++)
741 WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->ipaddr,i->set_time,i->duration,i->source,i->reason);
744 void stats_e(userrec* user)
746 for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
747 WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);
748 for (std::vector<ELine>::iterator i = pelines.begin(); i != pelines.end(); i++)
749 WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);