1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
14 /* $Core: libIRCDxline */
21 * This is now version 3 of the XLine subsystem, let's see if we can get it as nice and
22 * efficient as we can this time so we can close this file and never ever touch it again ..
25 * Version 1 stored all line types in one list (one for g, one for z, etc). This was fine,
26 * but both version 1 and 2 suck at applying lines efficiently. That is, every time a new line
27 * was added, it iterated every existing line for every existing user. Ow. Expiry was also
28 * expensive, as the lists were NOT sorted.
30 * Version 2 moved permanent lines into a seperate list from non-permanent to help optimize
31 * matching speed, but matched in the same way.
32 * Expiry was also sped up by sorting the list by expiry (meaning just remove the items at the
33 * head of the list that are outdated.)
35 * This was fine and good, but it looked less than ideal in code, and matching was still slower
36 * than it could have been, something which we address here.
39 * All lines are (as in v1) stored together -- no seperation of perm and non-perm. Expiry will
40 * still use a sorted list, and we'll just ignore anything permanent.
42 * Application will be by a list of lines 'pending' application, meaning only the newly added lines
43 * will be gone over. Much faster.
45 * More of course is to come.
48 /* Version two, now with optimized expiry!
50 * Because the old way was horrendously slow, the new way of expiring xlines is very
51 * very efficient. I have improved the efficiency of the algorithm in two ways:
53 * (1) There are now two lists of items for each linetype. One list holds temporary
54 * items, and the other list holds permanent items (ones which will expire).
55 * Items which are on the permanent list are NEVER checked at all by the
56 * expire_lines() function.
57 * (2) The temporary xline lists are always kept in strict numerical order, keyed by
58 * current time + duration. This means that the line which is due to expire the
59 * soonest is always pointed at by vector::begin(), so a simple while loop can
60 * very efficiently, very quickly and above all SAFELY pick off the first few
61 * items in the vector which need zapping.
66 bool XLine::Matches(User *u)
72 * Checks what users match a given vector of ELines and sets their ban exempt flag accordingly.
74 void XLineManager::CheckELines(std::map<std::string, XLine *> &ELines)
79 for (std::vector<User*>::const_iterator u2 = ServerInstance->local_users.begin(); u2 != ServerInstance->local_users.end(); u2++)
81 User* u = (User*)(*u2);
83 for (std::map<std::string, XLine *>::iterator i = ELines.begin(); i != ELines.end(); i++)
86 u->exempt = e->Matches(u);
91 // this should probably be moved to configreader, but atm it relies on CheckELines above.
92 bool DoneELine(ServerConfig* conf, const char* tag)
94 for (std::vector<User*>::const_iterator u2 = conf->GetInstance()->local_users.begin(); u2 != conf->GetInstance()->local_users.end(); u2++)
96 User* u = (User*)(*u2);
100 conf->GetInstance()->XLines->CheckELines(conf->GetInstance()->XLines->lookup_lines['E']);
105 IdentHostPair XLineManager::IdentSplit(const std::string &ident_and_host)
107 IdentHostPair n = std::make_pair<std::string,std::string>("*","*");
108 std::string::size_type x = ident_and_host.find('@');
109 if (x != std::string::npos)
111 n.second = ident_and_host.substr(x + 1,ident_and_host.length());
112 n.first = ident_and_host.substr(0, x);
113 if (!n.first.length())
115 if (!n.second.length())
116 n.second.assign("*");
120 n.second = ident_and_host;
128 /*bool XLineManager::AddELine(long duration, const char* source, const char* reason, const char* hostmask)*/
129 bool XLineManager::AddLine(XLine* line)
131 /*IdentHostPair ih = IdentSplit(hostmask);*/
133 if (DelLine(line->Displayable(), line->type, true))
136 /*ELine* item = new ELine(ServerInstance, ServerInstance->Time(), duration, source, reason, ih.first.c_str(), ih.second.c_str());*/
138 active_lines.push_back(line);
139 sort(active_lines.begin(), active_lines.end(), XLineManager::XSortComparison);
140 lookup_lines[line->type][line->Displayable()] = line;
146 /*bool XLineManager::AddZLine(long duration, const char* source, const char* reason, const char* ipaddr)
148 if (strchr(ipaddr,'@'))
150 while (*ipaddr != '@')
155 // deletes a g:line, returns true if the line existed and was removed
157 bool XLineManager::DelLine(const char* hostmask, char type, bool simulate)
159 IdentHostPair ih = IdentSplit(hostmask);
160 for (std::vector<XLine*>::iterator i = active_lines.begin(); i != active_lines.end(); i++)
162 if ((*i)->type == type)
164 if ((*i)->MatchesLiteral(hostmask))
170 active_lines.erase(i);
171 if (lookup_lines.find(type) != lookup_lines.end())
172 lookup_lines[type].erase(hostmask);
173 /* XXX: Should erase from pending lines here */
186 /* remove exempt from everyone and force recheck after deleting eline */
187 for (std::vector<User*>::const_iterator u2 = ServerInstance->local_users.begin(); u2 != ServerInstance->local_users.end(); u2++)
189 User* u = (User*)(*u2);
193 if (ServerInstance->XLines->lookup_lines.find('E') != ServerInstance->XLines->lookup_lines.end())
194 ServerInstance->XLines->CheckELines(ServerInstance->XLines->lookup_lines['E']);
197 // returns a pointer to the reason if a nickname matches a qline, NULL if it didnt match
199 QLine* XLineManager::matches_qline(const char* nick)
201 if (lookup_lines.find('Q') == lookup_lines.end())
204 if (lookup_lines.find('Q') != lookup_lines.end() && lookup_lines['Q'].empty())
207 for (std::vector<XLine*>::iterator i = active_lines.begin(); i != active_lines.end(); i++)
208 if ((*i)->type == 'Q' && (*i)->Matches(nick))
213 // returns a pointer to the reason if a host matches a gline, NULL if it didnt match
215 GLine* XLineManager::matches_gline(User* user)
217 if (lookup_lines.find('G') == lookup_lines.end())
220 if (lookup_lines.find('G') != lookup_lines.end() && lookup_lines['G'].empty())
223 for (std::vector<XLine*>::iterator i = active_lines.begin(); i != active_lines.end(); i++)
224 if ((*i)->type == 'G' && (*i)->Matches(user))
230 ELine* XLineManager::matches_exception(User* user)
232 if (lookup_lines.find('E') == lookup_lines.end())
235 if (lookup_lines.find('E') != lookup_lines.end() && lookup_lines['E'].empty())
238 for (std::vector<XLine*>::iterator i = active_lines.begin(); i != active_lines.end(); i++)
240 if ((*i)->type == 'E' && (*i)->Matches(user))
247 void XLineManager::gline_set_creation_time(const char* host, time_t create_time)
249 /*for (std::vector<XLine*>::iterator i = glines.begin(); i != glines.end(); i++)
251 if (!strcasecmp(host,(*i)->hostmask))
253 (*i)->set_time = create_time;
254 (*i)->expiry = create_time + (*i)->duration;
262 void XLineManager::eline_set_creation_time(const char* host, time_t create_time)
264 /*for (std::vector<ELine*>::iterator i = elines.begin(); i != elines.end(); i++)
266 if (!strcasecmp(host,(*i)->hostmask))
268 (*i)->set_time = create_time;
269 (*i)->expiry = create_time + (*i)->duration;
277 void XLineManager::qline_set_creation_time(const char* nick, time_t create_time)
279 /*for (std::vector<QLine*>::iterator i = qlines.begin(); i != qlines.end(); i++)
281 if (!strcasecmp(nick,(*i)->nick))
283 (*i)->set_time = create_time;
284 (*i)->expiry = create_time + (*i)->duration;
292 void XLineManager::zline_set_creation_time(const char* ip, time_t create_time)
294 /*for (std::vector<ZLine*>::iterator i = zlines.begin(); i != zlines.end(); i++)
296 if (!strcasecmp(ip,(*i)->ipaddr))
298 (*i)->set_time = create_time;
299 (*i)->expiry = create_time + (*i)->duration;
307 // returns a pointer to the reason if an ip address matches a zline, NULL if it didnt match
309 ZLine* XLineManager::matches_zline(User *u)
311 if (lookup_lines.find('Z') == lookup_lines.end())
314 if (lookup_lines.find('Z') != lookup_lines.end() && lookup_lines['Z'].empty())
317 for (std::vector<XLine*>::iterator i = active_lines.begin(); i != active_lines.end(); i++)
318 if ((*i)->type == 'Z' && (*i)->Matches(u))
323 // returns a pointer to the reason if a host matches a kline, NULL if it didnt match
325 KLine* XLineManager::matches_kline(User* user)
327 if (lookup_lines.find('K') == lookup_lines.end())
330 if (lookup_lines.find('K') != lookup_lines.end() && lookup_lines['K'].empty())
333 for (std::vector<XLine*>::iterator i = active_lines.begin(); i != active_lines.end(); i++)
334 if ((*i)->Matches(user))
340 bool XLineManager::XSortComparison(const XLine *one, const XLine *two)
342 // account for permanent lines
343 if (one->expiry == 0)
347 return (one->expiry) < (two->expiry);
350 // removes lines that have expired
351 void XLineManager::expire_lines()
353 time_t current = ServerInstance->Time();
355 /* Because we now store all our XLines in sorted order using ((*i)->duration + (*i)->set_time) as a key, this
356 * means that to expire the XLines we just need to do a while, picking off the top few until there are
357 * none left at the head of the queue that are after the current time.
360 while ((active_lines.size()) && (current > (*active_lines.begin())->expiry) && ((*active_lines.begin())->duration != 0))
362 std::vector<XLine*>::iterator i = active_lines.begin();
363 (*i)->DisplayExpiry();
365 active_lines.erase(i);
370 // applies lines, removing clients and changing nicks etc as applicable
371 void XLineManager::ApplyLines()
373 for (std::vector<User*>::const_iterator u2 = ServerInstance->local_users.begin(); u2 != ServerInstance->local_users.end(); u2++)
375 User* u = (User*)(*u2);
377 for (std::vector<XLine *>::iterator i = pending_lines.begin(); i != pending_lines.end(); i++)
385 pending_lines.clear();
388 void XLineManager::stats_k(User* user, string_list &results)
390 /*std::string sn = ServerInstance->Config->ServerName;
391 for (std::vector<KLine*>::iterator i = klines.begin(); i != klines.end(); i++)
392 results.push_back(sn+" 216 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason);*/
395 void XLineManager::stats_g(User* user, string_list &results)
397 /*std::string sn = ServerInstance->Config->ServerName;
398 for (std::vector<GLine*>::iterator i = glines.begin(); i != glines.end(); i++)
399 results.push_back(sn+" 223 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason);*/
402 void XLineManager::stats_q(User* user, string_list &results)
404 /*std::string sn = ServerInstance->Config->ServerName;
405 for (std::vector<QLine*>::iterator i = qlines.begin(); i != qlines.end(); i++)
406 results.push_back(sn+" 217 "+user->nick+" :"+(*i)->nick+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason);*/
409 void XLineManager::stats_z(User* user, string_list &results)
411 /*std::string sn = ServerInstance->Config->ServerName;
412 for (std::vector<ZLine*>::iterator i = zlines.begin(); i != zlines.end(); i++)
413 results.push_back(sn+" 223 "+user->nick+" :"+(*i)->ipaddr+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason);*/
416 void XLineManager::stats_e(User* user, string_list &results)
418 /*std::string sn = ServerInstance->Config->ServerName;
419 for (std::vector<ELine*>::iterator i = elines.begin(); i != elines.end(); i++)
420 results.push_back(sn+" 223 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason);*/
423 XLineManager::XLineManager(InspIRCd* Instance) : ServerInstance(Instance)
427 void XLine::Apply(User* u)
431 void XLine::DefaultApply(User* u, char line)
434 snprintf(reason, MAXBUF, "%c-Lined: %s", line, this->reason);
435 if (*ServerInstance->Config->MoronBanner)
436 u->WriteServ("NOTICE %s :*** %s", u->nick, ServerInstance->Config->MoronBanner);
437 if (ServerInstance->Config->HideBans)
438 User::QuitUser(ServerInstance, u, line + std::string("-Lined"), reason);
440 User::QuitUser(ServerInstance, u, reason);
443 bool KLine::Matches(User *u)
448 if ((match(u->ident, this->identmask)))
450 if ((match(u->host, this->hostmask, true)) || (match(u->GetIPString(), this->hostmask, true)))
459 void KLine::Apply(User* u)
461 DefaultApply(u, 'K');
464 bool GLine::Matches(User *u)
469 if ((match(u->ident, this->identmask)))
471 if ((match(u->host, this->hostmask, true)) || (match(u->GetIPString(), this->hostmask, true)))
480 void GLine::Apply(User* u)
482 DefaultApply(u, 'G');
485 bool ELine::Matches(User *u)
490 if ((match(u->ident, this->identmask)))
492 if ((match(u->host, this->hostmask, true)) || (match(u->GetIPString(), this->hostmask, true)))
501 bool ZLine::Matches(User *u)
506 if (match(u->GetIPString(), this->ipaddr, true))
512 void ZLine::Apply(User* u)
514 DefaultApply(u, 'Z');
518 bool QLine::Matches(User *u)
523 if (match(u->nick, this->nick))
529 void QLine::Apply(User* u)
531 /* Can we force the user to their uid here instead? */
532 DefaultApply(u, 'Q');
536 bool ZLine::Matches(const std::string &str)
538 if (match(str.c_str(), this->ipaddr, true))
544 bool QLine::Matches(const std::string &str)
546 if (match(str.c_str(), this->nick))
552 bool ELine::Matches(const std::string &str)
554 return ((match(str.c_str(), matchtext.c_str(), true)));
557 bool KLine::Matches(const std::string &str)
559 return ((match(str.c_str(), matchtext.c_str(), true)));
562 bool GLine::Matches(const std::string &str)
564 return ((match(str.c_str(), matchtext.c_str(), true)));
567 bool ELine::MatchesLiteral(const std::string &str)
569 return (assign(str) == matchtext);
572 bool ZLine::MatchesLiteral(const std::string &str)
574 return (assign(str) == this->ipaddr);
577 bool GLine::MatchesLiteral(const std::string &str)
579 return (assign(str) == matchtext);
582 bool KLine::MatchesLiteral(const std::string &str)
584 return (assign(str) == matchtext);
587 bool QLine::MatchesLiteral(const std::string &str)
589 return (assign(str) == this->nick);
594 /* When adding one eline, only check the one eline */
595 for (std::vector<User*>::const_iterator u2 = ServerInstance->local_users.begin(); u2 != ServerInstance->local_users.end(); u2++)
597 User* u = (User*)(*u2);
598 if (this->Matches(u))
603 void ELine::DisplayExpiry()
605 ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed E-Line %s@%s (set by %s %d seconds ago)",this->identmask,this->hostmask,this->source,this->duration);
608 void QLine::DisplayExpiry()
610 ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed Q-Line %s (set by %s %d seconds ago)",this->nick,this->source,this->duration);
613 void ZLine::DisplayExpiry()
615 ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed Z-Line %s (set by %s %d seconds ago)",this->ipaddr,this->source,this->duration);
618 void KLine::DisplayExpiry()
620 ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed K-Line %s@%s (set by %s %d seconds ago)",this->identmask,this->hostmask,this->source,this->duration);
623 void GLine::DisplayExpiry()
625 ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed G-Line %s@%s (set by %s %d seconds ago)",this->identmask,this->hostmask,this->source,this->duration);
628 const char* ELine::Displayable()
630 return matchtext.c_str();
633 const char* KLine::Displayable()
635 return matchtext.c_str();
638 const char* GLine::Displayable()
640 return matchtext.c_str();
643 const char* ZLine::Displayable()
648 const char* QLine::Displayable()
653 bool XLineManager::RegisterFactory(XLineFactory* xlf)
655 std::map<char, XLineFactory*>::iterator n = line_factory.find(xlf->GetType());
657 if (n != line_factory.end())
660 line_factory[xlf->GetType()] = xlf;
665 bool XLineManager::UnregisterFactory(XLineFactory* xlf)
667 std::map<char, XLineFactory*>::iterator n = line_factory.find(xlf->GetType());
669 if (n == line_factory.end())
672 line_factory.erase(n);
677 XLineFactory* XLineManager::GetFactory(const char type)
679 std::map<char, XLineFactory*>::iterator n = line_factory.find(type);
681 if (n != line_factory.end())