/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2019 Matt Schatz * Copyright (C) 2018 linuxdaemon * Copyright (C) 2013, 2017-2018, 2020 Sadie Powell * Copyright (C) 2012-2013, 2016 Attila Molnar * Copyright (C) 2012, 2019 Robby * Copyright (C) 2009 John Brooks * Copyright (C) 2009 Daniel De Graaf * Copyright (C) 2008 Robin Burchell * Copyright (C) 2007-2008 Dennis Friis * Copyright (C) 2006, 2010 Craig Edwards * * 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 "xline.h" #include "modules/stats.h" enum { // InspIRCd-specific. ERR_BADCHANNEL = 926 }; // Compatibility: Use glob matching? // InspIRCd versions 3.7.0 and below use only exact matching static bool glob = false; /** Holds a CBAN item */ class CBan : public XLine { private: std::string matchtext; public: CBan(time_t s_time, unsigned long d, const std::string& src, const std::string& re, const std::string& ch) : XLine(s_time, d, src, re, "CBAN") , matchtext(ch) { } // XXX I shouldn't have to define this bool Matches(User* u) CXX11_OVERRIDE { return false; } bool Matches(const std::string& s) CXX11_OVERRIDE { if (glob) return InspIRCd::Match(s, matchtext); else return irc::equals(matchtext, s); } const std::string& Displayable() CXX11_OVERRIDE { return matchtext; } }; /** An XLineFactory specialized to generate cban pointers */ class CBanFactory : public XLineFactory { public: CBanFactory() : XLineFactory("CBAN") { } /** Generate a CBAN */ XLine* Generate(time_t set_time, unsigned long duration, const std::string& source, const std::string& reason, const std::string& xline_specific_mask) CXX11_OVERRIDE { return new CBan(set_time, duration, source, reason, xline_specific_mask); } bool AutoApplyToUserList(XLine* x) CXX11_OVERRIDE { return false; // No, we apply to channels. } }; /** Handle /CBAN */ class CommandCBan : public Command { public: CommandCBan(Module* Creator) : Command(Creator, "CBAN", 1, 3) { flags_needed = 'o'; this->syntax = " [ [:]]"; } CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE { /* syntax: CBAN #channel time :reason goes here */ /* 'time' is a human-readable timestring, like 2d3h2s. */ if (parameters.size() == 1) { std::string reason; if (ServerInstance->XLines->DelLine(parameters[0].c_str(), "CBAN", reason, user)) { ServerInstance->SNO->WriteGlobalSno('x', "%s removed CBan on %s: %s", user->nick.c_str(), parameters[0].c_str(), reason.c_str()); } else { user->WriteNotice("*** CBan " + parameters[0] + " not found on the list."); return CMD_FAILURE; } } else { // Adding - XXX todo make this respect tag perhaps.. unsigned long duration; if (!InspIRCd::Duration(parameters[1], duration)) { user->WriteNotice("*** Invalid duration for CBan."); return CMD_FAILURE; } const char *reason = (parameters.size() > 2) ? parameters[2].c_str() : "No reason supplied"; CBan* r = new CBan(ServerInstance->Time(), duration, user->nick.c_str(), reason, parameters[0].c_str()); if (ServerInstance->XLines->AddLine(r, user)) { if (!duration) { ServerInstance->SNO->WriteGlobalSno('x', "%s added permanent CBan for %s: %s", user->nick.c_str(), parameters[0].c_str(), reason); } else { ServerInstance->SNO->WriteGlobalSno('x', "%s added timed CBan for %s, expires in %s (on %s): %s", user->nick.c_str(), parameters[0].c_str(), InspIRCd::DurationString(duration).c_str(), InspIRCd::TimeString(ServerInstance->Time() + duration).c_str(), reason); } } else { delete r; user->WriteNotice("*** CBan for " + parameters[0] + " already exists"); return CMD_FAILURE; } } return CMD_SUCCESS; } RouteDescriptor GetRouting(User* user, const Params& parameters) CXX11_OVERRIDE { if (IS_LOCAL(user)) return ROUTE_LOCALONLY; // spanningtree will send ADDLINE return ROUTE_BROADCAST; } }; class ModuleCBan : public Module, public Stats::EventListener { CommandCBan mycommand; CBanFactory f; public: ModuleCBan() : Stats::EventListener(this) , mycommand(this) { } void init() CXX11_OVERRIDE { ServerInstance->XLines->RegisterFactory(&f); } ~ModuleCBan() { ServerInstance->XLines->DelAll("CBAN"); ServerInstance->XLines->UnregisterFactory(&f); } void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE { ConfigTag* tag = ServerInstance->Config->ConfValue("cban"); // XXX: Consider changing default behavior on the next major version glob = tag->getBool("glob", false); } ModResult OnStats(Stats::Context& stats) CXX11_OVERRIDE { if (stats.GetSymbol() != 'C') return MOD_RES_PASSTHRU; ServerInstance->XLines->InvokeStats("CBAN", stats); return MOD_RES_DENY; } ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE { XLine *rl = ServerInstance->XLines->MatchesLine("CBAN", cname); if (rl) { // Channel is banned. user->WriteNumeric(ERR_BADCHANNEL, cname, InspIRCd::Format("Channel %s is CBANed: %s", cname.c_str(), rl->reason.c_str())); ServerInstance->SNO->WriteGlobalSno('a', "%s tried to join %s which is CBANed (%s)", user->nick.c_str(), cname.c_str(), rl->reason.c_str()); return MOD_RES_DENY; } return MOD_RES_PASSTHRU; } Version GetVersion() CXX11_OVERRIDE { return Version("Adds the /CBAN command which allows server operators to prevent channels matching a glob from being created.", VF_COMMON | VF_VENDOR, glob ? "glob" : ""); } }; MODULE_INIT(ModuleCBan)