/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. * E-mail: * * * * Written by Craig Edwards, Craig McLure, and others. * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ using namespace std; #include "inspircd.h" #include "users.h" #include "modules.h" #include "wildcard.h" #include "xline.h" #include "cull_list.h" /* Version two, now with optimized expiry! * * Because the old way was horrendously slow, the new way of expiring xlines is very * very efficient. I have improved the efficiency of the algorithm in two ways: * * (1) There are now two lists of items for each linetype. One list holds temporary * items, and the other list holds permanent items (ones which will expire). * Items which are on the permanent list are NEVER checked at all by the * expire_lines() function. * (2) The temporary xline lists are always kept in strict numerical order, keyed by * current time + duration. This means that the line which is due to expire the * soonest is always pointed at by vector::begin(), so a simple while loop can * very efficiently, very quickly and above all SAFELY pick off the first few * items in the vector which need zapping. * * -- Brain */ bool InitXLine(ServerConfig* conf, const char* tag) { return true; } bool DoneXLine(ServerConfig* conf, const char* tag) { conf->GetInstance()->XLines->apply_lines(APPLY_ALL); return true; } bool DoZLine(ServerConfig* conf, const char* tag, char** entries, void** values, int* types) { char* reason = (char*)values[0]; char* ipmask = (char*)values[1]; conf->GetInstance()->XLines->add_zline(0,"",reason,ipmask); conf->GetInstance()->Log(DEBUG,"Read Z line (badip tag): ipmask=%s reason=%s",ipmask,reason); return true; } bool DoQLine(ServerConfig* conf, const char* tag, char** entries, void** values, int* types) { char* reason = (char*)values[0]; char* nick = (char*)values[1]; conf->GetInstance()->XLines->add_qline(0,"",reason,nick); conf->GetInstance()->Log(DEBUG,"Read Q line (badnick tag): nick=%s reason=%s",nick,reason); return true; } bool DoKLine(ServerConfig* conf, const char* tag, char** entries, void** values, int* types) { char* reason = (char*)values[0]; char* host = (char*)values[1]; conf->GetInstance()->XLines->add_kline(0,"",reason,host); conf->GetInstance()->Log(DEBUG,"Read K line (badhost tag): host=%s reason=%s",host,reason); return true; } bool DoELine(ServerConfig* conf, const char* tag, char** entries, void** values, int* types) { char* reason = (char*)values[0]; char* host = (char*)values[1]; conf->GetInstance()->XLines->add_eline(0,"",reason,host); conf->GetInstance()->Log(DEBUG,"Read E line (exception tag): host=%s reason=%s",host,reason); return true; } IdentHostPair XLineManager::IdentSplit(const std::string &ident_and_host) { IdentHostPair n = std::make_pair("*","*"); std::string::size_type x = ident_and_host.find('@'); if (x != std::string::npos) { n.second = ident_and_host.substr(x + 1,ident_and_host.length()); n.first = ident_and_host.substr(0, x); if (!n.first.length()) n.first = "*"; if (!n.second.length()) n.second = "*"; } else { n.second = ident_and_host; } return n; } // adds a g:line bool XLineManager::add_gline(long duration, const char* source,const char* reason,const char* hostmask) { IdentHostPair ih = IdentSplit(hostmask); bool ret = del_gline(hostmask); GLine* item = new GLine(ServerInstance->Time(), duration, source, reason, ih.first.c_str(), ih.second.c_str()); if (duration) { glines.push_back(item); sort(glines.begin(), glines.end(),XLineManager::GSortComparison); } else { pglines.push_back(item); } return !ret; } // adds an e:line (exception to bans) bool XLineManager::add_eline(long duration, const char* source, const char* reason, const char* hostmask) { IdentHostPair ih = IdentSplit(hostmask); bool ret = del_eline(hostmask); ELine* item = new ELine(ServerInstance->Time(), duration, source, reason, ih.first.c_str(), ih.second.c_str()); if (duration) { elines.push_back(item); sort(elines.begin(), elines.end(),XLineManager::ESortComparison); } else { pelines.push_back(item); } return !ret; } // adds a q:line bool XLineManager::add_qline(long duration, const char* source, const char* reason, const char* nickname) { bool ret = del_qline(nickname); QLine* item = new QLine(ServerInstance->Time(), duration, source, reason, nickname); if (duration) { qlines.push_back(item); sort(qlines.begin(), qlines.end(),XLineManager::QSortComparison); } else { pqlines.push_back(item); } return !ret; } // adds a z:line bool XLineManager::add_zline(long duration, const char* source, const char* reason, const char* ipaddr) { bool ret = del_zline(ipaddr); if (strchr(ipaddr,'@')) { while (*ipaddr != '@') ipaddr++; ipaddr++; } ZLine* item = new ZLine(ServerInstance->Time(), duration, source, reason, ipaddr); if (duration) { zlines.push_back(item); sort(zlines.begin(), zlines.end(),XLineManager::ZSortComparison); } else { pzlines.push_back(item); } return !ret; } // adds a k:line bool XLineManager::add_kline(long duration, const char* source, const char* reason, const char* hostmask) { IdentHostPair ih = IdentSplit(hostmask); bool ret = del_kline(hostmask); KLine* item = new KLine(ServerInstance->Time(), duration, source, reason, ih.first.c_str(), ih.second.c_str()); if (duration) { klines.push_back(item); sort(klines.begin(), klines.end(),XLineManager::KSortComparison); } else { pklines.push_back(item); } return !ret; } // deletes a g:line, returns true if the line existed and was removed bool XLineManager::del_gline(const char* hostmask) { IdentHostPair ih = IdentSplit(hostmask); for (std::vector::iterator i = glines.begin(); i != glines.end(); i++) { if (!strcasecmp(ih.first.c_str(),(*i)->identmask) && !strcasecmp(ih.second.c_str(),(*i)->hostmask)) { delete *i; glines.erase(i); return true; } } for (std::vector::iterator i = pglines.begin(); i != pglines.end(); i++) { if (!strcasecmp(ih.first.c_str(),(*i)->identmask) && !strcasecmp(ih.second.c_str(),(*i)->hostmask)) { delete *i; pglines.erase(i); return true; } } return false; } // deletes a e:line, returns true if the line existed and was removed bool XLineManager::del_eline(const char* hostmask) { IdentHostPair ih = IdentSplit(hostmask); for (std::vector::iterator i = elines.begin(); i != elines.end(); i++) { if (!strcasecmp(ih.first.c_str(),(*i)->identmask) && !strcasecmp(ih.second.c_str(),(*i)->hostmask)) { delete *i; elines.erase(i); return true; } } for (std::vector::iterator i = pelines.begin(); i != pelines.end(); i++) { if (!strcasecmp(ih.first.c_str(),(*i)->identmask) && !strcasecmp(ih.second.c_str(),(*i)->hostmask)) { delete *i; pelines.erase(i); return true; } } return false; } // deletes a q:line, returns true if the line existed and was removed bool XLineManager::del_qline(const char* nickname) { for (std::vector::iterator i = qlines.begin(); i != qlines.end(); i++) { if (!strcasecmp(nickname,(*i)->nick)) { delete *i; qlines.erase(i); return true; } } for (std::vector::iterator i = pqlines.begin(); i != pqlines.end(); i++) { if (!strcasecmp(nickname,(*i)->nick)) { delete *i; pqlines.erase(i); return true; } } return false; } // deletes a z:line, returns true if the line existed and was removed bool XLineManager::del_zline(const char* ipaddr) { for (std::vector::iterator i = zlines.begin(); i != zlines.end(); i++) { if (!strcasecmp(ipaddr,(*i)->ipaddr)) { delete *i; zlines.erase(i); return true; } } for (std::vector::iterator i = pzlines.begin(); i != pzlines.end(); i++) { if (!strcasecmp(ipaddr,(*i)->ipaddr)) { delete *i; pzlines.erase(i); return true; } } return false; } // deletes a k:line, returns true if the line existed and was removed bool XLineManager::del_kline(const char* hostmask) { IdentHostPair ih = IdentSplit(hostmask); for (std::vector::iterator i = klines.begin(); i != klines.end(); i++) { if (!strcasecmp(ih.first.c_str(),(*i)->identmask) && !strcasecmp(ih.second.c_str(),(*i)->hostmask)) { delete *i; klines.erase(i); return true; } } for (std::vector::iterator i = pklines.begin(); i != pklines.end(); i++) { if (!strcasecmp(ih.first.c_str(),(*i)->identmask) && !strcasecmp(ih.second.c_str(),(*i)->hostmask)) { delete *i; pklines.erase(i); return true; } } return false; } // returns a pointer to the reason if a nickname matches a qline, NULL if it didnt match QLine* XLineManager::matches_qline(const char* nick) { if ((qlines.empty()) && (pqlines.empty())) return NULL; for (std::vector::iterator i = qlines.begin(); i != qlines.end(); i++) if (match(nick,(*i)->nick)) return (*i); for (std::vector::iterator i = pqlines.begin(); i != pqlines.end(); i++) if (match(nick,(*i)->nick)) return (*i); return NULL; } // returns a pointer to the reason if a host matches a gline, NULL if it didnt match GLine* XLineManager::matches_gline(userrec* user) { if ((glines.empty()) && (pglines.empty())) return NULL; for (std::vector::iterator i = glines.begin(); i != glines.end(); i++) { if ((match(user->ident,(*i)->identmask))) { if ((match(user->host,(*i)->hostmask, true)) || (match(user->GetIPString(),(*i)->hostmask, true))) { return (*i); } } } for (std::vector::iterator i = pglines.begin(); i != pglines.end(); i++) { if ((match(user->ident,(*i)->identmask))) { if ((match(user->host,(*i)->hostmask, true)) || (match(user->GetIPString(),(*i)->hostmask, true))) { return (*i); } } } return NULL; } ELine* XLineManager::matches_exception(userrec* user) { if ((elines.empty()) && (pelines.empty())) return NULL; char host2[MAXBUF]; snprintf(host2,MAXBUF,"*@%s",user->host); for (std::vector::iterator i = elines.begin(); i != elines.end(); i++) { if ((match(user->ident,(*i)->identmask))) { if ((match(user->host,(*i)->hostmask, true)) || (match(user->GetIPString(),(*i)->hostmask, true))) { return (*i); } } } for (std::vector::iterator i = pelines.begin(); i != pelines.end(); i++) { if ((match(user->ident,(*i)->identmask))) { if ((match(user->host,(*i)->hostmask, true)) || (match(user->GetIPString(),(*i)->hostmask, true))) { return (*i); } } } return NULL; } void XLineManager::gline_set_creation_time(const char* host, time_t create_time) { for (std::vector::iterator i = glines.begin(); i != glines.end(); i++) { if (!strcasecmp(host,(*i)->hostmask)) { (*i)->set_time = create_time; (*i)->expiry = create_time + (*i)->duration; return; } } for (std::vector::iterator i = pglines.begin(); i != pglines.end(); i++) { if (!strcasecmp(host,(*i)->hostmask)) { (*i)->set_time = create_time; return; } } return ; } void XLineManager::eline_set_creation_time(const char* host, time_t create_time) { for (std::vector::iterator i = elines.begin(); i != elines.end(); i++) { if (!strcasecmp(host,(*i)->hostmask)) { (*i)->set_time = create_time; (*i)->expiry = create_time + (*i)->duration; return; } } for (std::vector::iterator i = pelines.begin(); i != pelines.end(); i++) { if (!strcasecmp(host,(*i)->hostmask)) { (*i)->set_time = create_time; return; } } return; } void XLineManager::qline_set_creation_time(const char* nick, time_t create_time) { for (std::vector::iterator i = qlines.begin(); i != qlines.end(); i++) { if (!strcasecmp(nick,(*i)->nick)) { (*i)->set_time = create_time; (*i)->expiry = create_time + (*i)->duration; return; } } for (std::vector::iterator i = pqlines.begin(); i != pqlines.end(); i++) { if (!strcasecmp(nick,(*i)->nick)) { (*i)->set_time = create_time; return; } } return; } void XLineManager::zline_set_creation_time(const char* ip, time_t create_time) { for (std::vector::iterator i = zlines.begin(); i != zlines.end(); i++) { if (!strcasecmp(ip,(*i)->ipaddr)) { (*i)->set_time = create_time; (*i)->expiry = create_time + (*i)->duration; return; } } for (std::vector::iterator i = pzlines.begin(); i != pzlines.end(); i++) { if (!strcasecmp(ip,(*i)->ipaddr)) { (*i)->set_time = create_time; return; } } return; } // returns a pointer to the reason if an ip address matches a zline, NULL if it didnt match ZLine* XLineManager::matches_zline(const char* ipaddr) { if ((zlines.empty()) && (pzlines.empty())) return NULL; for (std::vector::iterator i = zlines.begin(); i != zlines.end(); i++) if (match(ipaddr,(*i)->ipaddr, true)) return (*i); for (std::vector::iterator i = pzlines.begin(); i != pzlines.end(); i++) if (match(ipaddr,(*i)->ipaddr, true)) return (*i); return NULL; } // returns a pointer to the reason if a host matches a kline, NULL if it didnt match KLine* XLineManager::matches_kline(userrec* user) { if ((klines.empty()) && (pklines.empty())) return NULL; for (std::vector::iterator i = klines.begin(); i != klines.end(); i++) { if ((match(user->ident,(*i)->identmask))) { if ((match(user->host,(*i)->hostmask, true)) || (match(user->GetIPString(),(*i)->hostmask, true))) { return (*i); } } } for (std::vector::iterator i = pklines.begin(); i != pklines.end(); i++) { if ((match(user->ident,(*i)->identmask))) { if ((match(user->host,(*i)->hostmask, true)) || (match(user->GetIPString(),(*i)->hostmask, true))) { return (*i); } } } return NULL; } bool XLineManager::GSortComparison ( const GLine* one, const GLine* two ) { return (one->expiry) < (two->expiry); } bool XLineManager::ESortComparison ( const ELine* one, const ELine* two ) { return (one->expiry) < (two->expiry); } bool XLineManager::ZSortComparison ( const ZLine* one, const ZLine* two ) { return (one->expiry) < (two->expiry); } bool XLineManager::KSortComparison ( const KLine* one, const KLine* two ) { return (one->expiry) < (two->expiry); } bool XLineManager::QSortComparison ( const QLine* one, const QLine* two ) { return (one->expiry) < (two->expiry); } // removes lines that have expired void XLineManager::expire_lines() { time_t current = ServerInstance->Time(); /* Because we now store all our XLines in sorted order using ((*i)->duration + (*i)->set_time) as a key, this * means that to expire the XLines we just need to do a while, picking off the top few until there are * none left at the head of the queue that are after the current time. */ while ((glines.size()) && (current > (*glines.begin())->expiry)) { std::vector::iterator i = glines.begin(); ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed G-Line %s (set by %s %d seconds ago)",(*i)->hostmask,(*i)->source,(*i)->duration); glines.erase(i); } while ((elines.size()) && (current > (*elines.begin())->expiry)) { std::vector::iterator i = elines.begin(); ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed E-Line %s (set by %s %d seconds ago)",(*i)->hostmask,(*i)->source,(*i)->duration); elines.erase(i); } while ((zlines.size()) && (current > (*zlines.begin())->expiry)) { std::vector::iterator i = zlines.begin(); ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed Z-Line %s (set by %s %d seconds ago)",(*i)->ipaddr,(*i)->source,(*i)->duration); zlines.erase(i); } while ((klines.size()) && (current > (*klines.begin())->expiry)) { std::vector::iterator i = klines.begin(); ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed K-Line %s (set by %s %d seconds ago)",(*i)->hostmask,(*i)->source,(*i)->duration); klines.erase(i); } while ((qlines.size()) && (current > (*qlines.begin())->expiry)) { std::vector::iterator i = qlines.begin(); ServerInstance->SNO->WriteToSnoMask('x',"Expiring timed Q-Line %s (set by %s %d seconds ago)",(*i)->nick,(*i)->source,(*i)->duration); qlines.erase(i); } } // applies lines, removing clients and changing nicks etc as applicable void XLineManager::apply_lines(const int What) { char reason[MAXBUF]; if ((!glines.size()) && (!klines.size()) && (!zlines.size()) && (!qlines.size()) && (!pglines.size()) && (!pklines.size()) && (!pzlines.size()) && (!pqlines.size())) return; CullList* Goners = new CullList(ServerInstance); XLine* check = NULL; for (std::vector::const_iterator u2 = ServerInstance->local_users.begin(); u2 != ServerInstance->local_users.end(); u2++) { userrec* u = (userrec*)(*u2); if (elines.size() || pelines.size()) { // ignore people matching exempts if (matches_exception(u)) continue; } if ((What & APPLY_GLINES) && (glines.size() || pglines.size())) { if ((check = matches_gline(u))) { snprintf(reason,MAXBUF,"G-Lined: %s",check->reason); Goners->AddItem(u,reason); } } if ((What & APPLY_KLINES) && (klines.size() || pklines.size())) { if ((check = matches_kline(u))) { snprintf(reason,MAXBUF,"K-Lined: %s",check->reason); Goners->AddItem(u,reason); } } if ((What & APPLY_QLINES) && (qlines.size() || pqlines.size())) { if ((check = matches_qline(u->nick))) { snprintf(reason,MAXBUF,"Q-Lined: %s",check->reason); Goners->AddItem(u,reason); } } if ((What & APPLY_ZLINES) && (zlines.size() || pzlines.size())) { if ((check = matches_zline(u->GetIPString()))) { snprintf(reason,MAXBUF,"Z-Lined: %s",check->reason); Goners->AddItem(u,reason); } } } Goners->Apply(); DELETE(Goners); } void XLineManager::stats_k(userrec* user, string_list &results) { std::string sn = ServerInstance->Config->ServerName; for (std::vector::iterator i = klines.begin(); i != klines.end(); i++) results.push_back(sn+" 216 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); for (std::vector::iterator i = pklines.begin(); i != pklines.end(); i++) results.push_back(sn+" 216 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); } void XLineManager::stats_g(userrec* user, string_list &results) { std::string sn = ServerInstance->Config->ServerName; for (std::vector::iterator i = glines.begin(); i != glines.end(); i++) results.push_back(sn+" 223 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); for (std::vector::iterator i = pglines.begin(); i != pglines.end(); i++) results.push_back(sn+" 223 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); } void XLineManager::stats_q(userrec* user, string_list &results) { std::string sn = ServerInstance->Config->ServerName; for (std::vector::iterator i = qlines.begin(); i != qlines.end(); i++) results.push_back(sn+" 217 "+user->nick+" :"+(*i)->nick+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); for (std::vector::iterator i = pqlines.begin(); i != pqlines.end(); i++) results.push_back(sn+" 217 "+user->nick+" :"+(*i)->nick+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); } void XLineManager::stats_z(userrec* user, string_list &results) { std::string sn = ServerInstance->Config->ServerName; for (std::vector::iterator i = zlines.begin(); i != zlines.end(); i++) results.push_back(sn+" 223 "+user->nick+" :"+(*i)->ipaddr+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); for (std::vector::iterator i = pzlines.begin(); i != pzlines.end(); i++) results.push_back(sn+" 223 "+user->nick+" :"+(*i)->ipaddr+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); } void XLineManager::stats_e(userrec* user, string_list &results) { std::string sn = ServerInstance->Config->ServerName; for (std::vector::iterator i = elines.begin(); i != elines.end(); i++) results.push_back(sn+" 223 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); for (std::vector::iterator i = pelines.begin(); i != pelines.end(); i++) results.push_back(sn+" 223 "+user->nick+" :"+(*i)->identmask+"@"+(*i)->hostmask+" "+ConvToStr((*i)->set_time)+" "+ConvToStr((*i)->duration)+" "+(*i)->source+" :"+(*i)->reason); } XLineManager::XLineManager(InspIRCd* Instance) : ServerInstance(Instance) { }