/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2009 Daniel De Graaf * Copyright (C) 2008 Craig Edwards * Copyright (C) 2008 Thomas Stagner * Copyright (C) 2008 Robin Burchell * * This file is part of InspIRCd. InspIRCd is free software: you can * redistribute it and/or modify it under the terms of the GNU General Public * License as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include "inspircd.h" #include "modules/regex.h" #include "xline.h" static bool ZlineOnMatch = false; static bool added_zline = false; class RLine : public XLine { public: /** Create a R-Line. * @param s_time The set time * @param d The duration of the xline * @param src The sender of the xline * @param re The reason of the xline * @param regex Pattern to match with * @ */ RLine(time_t s_time, long d, const std::string& src, const std::string& re, const std::string& regexs, dynamic_reference& rxfactory) : XLine(s_time, d, src, re, "R") , matchtext(regexs) { /* This can throw on failure, but if it does we DONT catch it here, we catch it and display it * where the object is created, we might not ALWAYS want it to output stuff to snomask x all the time */ regex = rxfactory->Create(regexs); } /** Destructor */ ~RLine() { delete regex; } bool Matches(User *u) { LocalUser* lu = IS_LOCAL(u); if (lu && lu->exempt) return false; std::string compare = u->nick + "!" + u->ident + "@" + u->host + " " + u->fullname; return regex->Matches(compare); } bool Matches(const std::string &compare) { return regex->Matches(compare); } void Apply(User* u) { if (ZlineOnMatch) { ZLine* zl = new ZLine(ServerInstance->Time(), duration ? expiry - ServerInstance->Time() : 0, ServerInstance->Config->ServerName.c_str(), reason.c_str(), u->GetIPString()); if (ServerInstance->XLines->AddLine(zl, NULL)) { std::string timestr = InspIRCd::TimeString(zl->expiry); ServerInstance->SNO->WriteToSnoMask('x', "Z-line added due to R-line match on *@%s%s%s: %s", zl->ipaddr.c_str(), zl->duration ? " to expire on " : "", zl->duration ? timestr.c_str() : "", zl->reason.c_str()); added_zline = true; } else delete zl; } DefaultApply(u, "R", false); } const std::string& Displayable() { return matchtext; } std::string matchtext; Regex *regex; }; /** An XLineFactory specialized to generate RLine* pointers */ class RLineFactory : public XLineFactory { public: dynamic_reference& rxfactory; RLineFactory(dynamic_reference& rx) : XLineFactory("R"), rxfactory(rx) { } /** Generate a RLine */ XLine* Generate(time_t set_time, long duration, std::string source, std::string reason, std::string xline_specific_mask) { if (!rxfactory) { ServerInstance->SNO->WriteToSnoMask('a', "Cannot create regexes until engine is set to a loaded provider!"); throw ModuleException("Regex engine not set or loaded!"); } return new RLine(set_time, duration, source, reason, xline_specific_mask, rxfactory); } }; /** Handle /RLINE * Syntax is same as other lines: RLINE regex_goes_here 1d :reason */ class CommandRLine : public Command { std::string rxengine; RLineFactory& factory; public: CommandRLine(Module* Creator, RLineFactory& rlf) : Command(Creator,"RLINE", 1, 3), factory(rlf) { flags_needed = 'o'; this->syntax = " [] :"; } CmdResult Handle (const std::vector& parameters, User *user) { if (parameters.size() >= 3) { // Adding - XXX todo make this respect tag perhaps.. unsigned long duration = InspIRCd::Duration(parameters[1]); XLine *r = NULL; try { r = factory.Generate(ServerInstance->Time(), duration, user->nick.c_str(), parameters[2].c_str(), parameters[0].c_str()); } catch (ModuleException &e) { ServerInstance->SNO->WriteToSnoMask('a',"Could not add RLINE: %s", e.GetReason()); } if (r) { if (ServerInstance->XLines->AddLine(r, user)) { if (!duration) { ServerInstance->SNO->WriteToSnoMask('x',"%s added permanent R-line for %s: %s", user->nick.c_str(), parameters[0].c_str(), parameters[2].c_str()); } else { time_t c_requires_crap = duration + ServerInstance->Time(); std::string timestr = InspIRCd::TimeString(c_requires_crap); ServerInstance->SNO->WriteToSnoMask('x', "%s added timed R-line for %s to expire on %s: %s", user->nick.c_str(), parameters[0].c_str(), timestr.c_str(), parameters[2].c_str()); } ServerInstance->XLines->ApplyLines(); } else { delete r; user->WriteNotice("*** R-Line for " + parameters[0] + " already exists"); } } } else { if (ServerInstance->XLines->DelLine(parameters[0].c_str(), "R", user)) { ServerInstance->SNO->WriteToSnoMask('x',"%s removed R-line on %s",user->nick.c_str(),parameters[0].c_str()); } else { user->WriteNotice("*** R-Line " + parameters[0] + " not found in list, try /stats R."); } } return CMD_SUCCESS; } RouteDescriptor GetRouting(User* user, const std::vector& parameters) { if (IS_LOCAL(user)) return ROUTE_LOCALONLY; // spanningtree will send ADDLINE return ROUTE_BROADCAST; } }; class ModuleRLine : public Module { dynamic_reference rxfactory; RLineFactory f; CommandRLine r; bool MatchOnNickChange; bool initing; RegexFactory* factory; public: ModuleRLine() : rxfactory(this, "regex"), f(rxfactory), r(this, f) , initing(true) { } void init() CXX11_OVERRIDE { ServerInstance->XLines->RegisterFactory(&f); } ~ModuleRLine() { ServerInstance->XLines->DelAll("R"); ServerInstance->XLines->UnregisterFactory(&f); } Version GetVersion() CXX11_OVERRIDE { return Version("RLINE: Regexp user banning.", VF_COMMON | VF_VENDOR, rxfactory ? rxfactory->name : ""); } ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE { // Apply lines on user connect XLine *rl = ServerInstance->XLines->MatchesLine("R", user); if (rl) { // Bang. :P rl->Apply(user); return MOD_RES_DENY; } return MOD_RES_PASSTHRU; } void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE { ConfigTag* tag = ServerInstance->Config->ConfValue("rline"); MatchOnNickChange = tag->getBool("matchonnickchange"); ZlineOnMatch = tag->getBool("zlineonmatch"); std::string newrxengine = tag->getString("engine"); factory = rxfactory ? (rxfactory.operator->()) : NULL; if (newrxengine.empty()) rxfactory.SetProvider("regex"); else rxfactory.SetProvider("regex/" + newrxengine); if (!rxfactory) { if (newrxengine.empty()) ServerInstance->SNO->WriteToSnoMask('a', "WARNING: No regex engine loaded - R-Line functionality disabled until this is corrected."); else ServerInstance->SNO->WriteToSnoMask('a', "WARNING: Regex engine '%s' is not loaded - R-Line functionality disabled until this is corrected.", newrxengine.c_str()); ServerInstance->XLines->DelAll(f.GetType()); } else if ((!initing) && (rxfactory.operator->() != factory)) { ServerInstance->SNO->WriteToSnoMask('a', "Regex engine has changed, removing all R-Lines"); ServerInstance->XLines->DelAll(f.GetType()); } initing = false; } ModResult OnStats(char symbol, User* user, string_list &results) CXX11_OVERRIDE { if (symbol != 'R') return MOD_RES_PASSTHRU; ServerInstance->XLines->InvokeStats("R", 223, user, results); return MOD_RES_DENY; } void OnUserPostNick(User *user, const std::string &oldnick) CXX11_OVERRIDE { if (!IS_LOCAL(user)) return; if (!MatchOnNickChange) return; XLine *rl = ServerInstance->XLines->MatchesLine("R", user); if (rl) { // Bang! :D rl->Apply(user); } } void OnBackgroundTimer(time_t curtime) CXX11_OVERRIDE { if (added_zline) { added_zline = false; ServerInstance->XLines->ApplyLines(); } } void OnUnloadModule(Module* mod) CXX11_OVERRIDE { // If the regex engine became unavailable or has changed, remove all rlines if (!rxfactory) { ServerInstance->XLines->DelAll(f.GetType()); } else if (rxfactory.operator->() != factory) { factory = rxfactory.operator->(); ServerInstance->XLines->DelAll(f.GetType()); } } void Prioritize() { Module* mod = ServerInstance->Modules->Find("m_cgiirc.so"); ServerInstance->Modules->SetPriority(this, I_OnUserRegister, PRIORITY_AFTER, mod); } }; MODULE_INIT(ModuleRLine)