/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2017 B00mX0r * Copyright (C) 2013, 2018, 2020 Sadie Powell * Copyright (C) 2012-2014, 2016 Attila Molnar * Copyright (C) 2012, 2019 Robby * Copyright (C) 2012 Justin Crawford * Copyright (C) 2009 Uli Schlachter * Copyright (C) 2009 Daniel De Graaf * Copyright (C) 2008 Thomas Stagner * Copyright (C) 2007 Robin Burchell * Copyright (C) 2007 Dennis Friis * Copyright (C) 2006 Oliver Lupton * Copyright (C) 2005-2006, 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" /* * This module supports the use of the +q and +a usermodes, but should work without them too. * Usage of the command is restricted to +hoaq, and you cannot remove a user with a "higher" level than yourself. * eg: +h can remove +hv and users with no modes. +a can remove +aohv and users with no modes. */ /** Base class for /FPART and /REMOVE */ class RemoveBase : public Command { bool& supportnokicks; ChanModeReference& nokicksmode; public: unsigned int protectedrank; RemoveBase(Module* Creator, bool& snk, ChanModeReference& nkm, const char* cmdn) : Command(Creator, cmdn, 2, 3) , supportnokicks(snk) , nokicksmode(nkm) { } CmdResult HandleRMB(User* user, const CommandBase::Params& parameters, bool fpart) { User* target; Channel* channel; std::string reason; // If the command is a /REMOVE then detect the parameter order bool neworder = ((fpart) || (parameters[0][0] == '#')); /* Set these to the parameters needed, the new version of this module switches it's parameters around * supplying a new command with the new order while keeping the old /remove with the older order. * /remove [reason ...] * /fpart [reason ...] */ const std::string& channame = parameters[neworder ? 0 : 1]; const std::string& username = parameters[neworder ? 1 : 0]; /* Look up the user we're meant to be removing from the channel */ if (IS_LOCAL(user)) target = ServerInstance->FindNickOnly(username); else target = ServerInstance->FindNick(username); /* And the channel we're meant to be removing them from */ channel = ServerInstance->FindChan(channame); /* Fix by brain - someone needs to learn to validate their input! */ if (!channel) { user->WriteNumeric(Numerics::NoSuchChannel(channame)); return CMD_FAILURE; } if ((!target) || (target->registered != REG_ALL)) { user->WriteNumeric(Numerics::NoSuchNick(username)); return CMD_FAILURE; } if (!channel->HasUser(target)) { user->WriteNotice(InspIRCd::Format("*** User %s is not on channel %s", target->nick.c_str(), channel->name.c_str())); return CMD_FAILURE; } if (target->server->IsULine()) { user->WriteNumeric(ERR_CHANOPRIVSNEEDED, channame, "Only a U-line may remove a U-line from a channel."); return CMD_FAILURE; } /* We support the +Q channel mode via. the m_nokicks module, if the module is loaded and the mode is set then disallow the /remove */ if ((!IS_LOCAL(user)) || (!supportnokicks) || (!channel->IsModeSet(nokicksmode))) { /* We'll let everyone remove their level and below, eg: * ops can remove ops, halfops, voices, and those with no mode (no moders actually are set to 1) * a ulined target will get a higher level than it's possible for a /remover to get..so they're safe. * Nobody may remove people with >= protectedrank rank. */ unsigned int ulevel = channel->GetPrefixValue(user); unsigned int tlevel = channel->GetPrefixValue(target); if ((!IS_LOCAL(user)) || ((ulevel > VOICE_VALUE) && (ulevel >= tlevel) && ((protectedrank == 0) || (tlevel < protectedrank)))) { // REMOVE will be sent to the target's server and it will reply with a PART (or do nothing if it doesn't understand the command) if (!IS_LOCAL(target)) { // Send an ENCAP REMOVE with parameters being in the old order which is // compatible with both 2.0 and 3.0. This also turns FPART into REMOVE. CommandBase::Params p; p.push_back(target->uuid); p.push_back(channel->name); if (parameters.size() > 2) p.push_back(":" + parameters[2]); ServerInstance->PI->SendEncapsulatedData(target->server->GetName(), "REMOVE", p, user); return CMD_SUCCESS; } std::string reasonparam; /* If a reason is given, use it */ if(parameters.size() > 2) reasonparam = parameters[2]; else reasonparam = "No reason given"; /* Build up the part reason string. */ reason = "Removed by " + user->nick + ": " + reasonparam; channel->WriteRemoteNotice(InspIRCd::Format("%s removed %s from the channel", user->nick.c_str(), target->nick.c_str())); target->WriteNotice("*** " + user->nick + " removed you from " + channel->name + " with the message: " + reasonparam); channel->PartUser(target, reason); } else { user->WriteNotice(InspIRCd::Format("*** You do not have access to /REMOVE %s from %s", target->nick.c_str(), channel->name.c_str())); return CMD_FAILURE; } } else { /* m_nokicks.so was loaded and +Q was set, block! */ user->WriteNumeric(ERR_RESTRICTED, channel->name, InspIRCd::Format("Can't remove user %s from channel (+Q is set)", target->nick.c_str())); return CMD_FAILURE; } return CMD_SUCCESS; } }; /** Handle /REMOVE */ class CommandRemove : public RemoveBase { public: CommandRemove(Module* Creator, bool& snk, ChanModeReference& nkm) : RemoveBase(Creator, snk, nkm, "REMOVE") { syntax = " [:]"; TRANSLATE3(TR_NICK, TR_TEXT, TR_TEXT); } CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE { return HandleRMB(user, parameters, false); } }; /** Handle /FPART */ class CommandFpart : public RemoveBase { public: CommandFpart(Module* Creator, bool& snk, ChanModeReference& nkm) : RemoveBase(Creator, snk, nkm, "FPART") { syntax = " [:]"; TRANSLATE3(TR_TEXT, TR_NICK, TR_TEXT); } CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE { return HandleRMB(user, parameters, true); } }; class ModuleRemove : public Module { ChanModeReference nokicksmode; CommandRemove cmd1; CommandFpart cmd2; bool supportnokicks; public: ModuleRemove() : nokicksmode(this, "nokick") , cmd1(this, supportnokicks, nokicksmode) , cmd2(this, supportnokicks, nokicksmode) { } void On005Numeric(std::map& tokens) CXX11_OVERRIDE { tokens["REMOVE"]; } void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE { ConfigTag* tag = ServerInstance->Config->ConfValue("remove"); supportnokicks = tag->getBool("supportnokicks"); cmd1.protectedrank = cmd2.protectedrank = tag->getUInt("protectedrank", 50000); } Version GetVersion() CXX11_OVERRIDE { return Version("Adds the /FPART and /REMOVE commands which allows channel operators to force part users from a channel.", VF_OPTCOMMON | VF_VENDOR); } }; MODULE_INIT(ModuleRemove)