X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_redirect.cpp;h=e822676bf7357c102233cbcd69f5768110a4daf7;hb=0e5fb98a6b82af738f6d5c3093d9597d470be3a6;hp=e818645652c47e15e5fb0d5efbd817f551ee7795;hpb=28c82e83802100a2b7b6dadf5333a199c9fbe663;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_redirect.cpp b/src/modules/m_redirect.cpp index e81864565..e822676bf 100644 --- a/src/modules/m_redirect.cpp +++ b/src/modules/m_redirect.cpp @@ -1,135 +1,150 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * Inspire is copyright (C) 2002-2004 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. + * Copyright (C) 2012 Shawn Smith + * Copyright (C) 2009 Daniel De Graaf + * Copyright (C) 2007-2008 Robin Burchell + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2004, 2006 Craig Edwards + * Copyright (C) 2006 Oliver Lupton * - * --------------------------------------------------- + * 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 -#include "users.h" -#include "channels.h" -#include "modules.h" -/* $ModDesc: Provides channel mode +L (limit redirection) */ +#include "inspircd.h" - -class ModuleRedirect : public Module +/** Handle channel mode +L + */ +class Redirect : public ParamMode { - Server *Srv; - public: - - ModuleRedirect() - { - Srv = new Server; - Srv->AddExtendedMode('L',MT_CHANNEL,false,1,0); - } - - virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms) + Redirect(Module* Creator) + : ParamMode(Creator, "redirect", 'L') { } + + ModeAction OnSet(User* source, Channel* channel, std::string& parameter) { - if ((modechar == 'L') && (type == MT_CHANNEL)) + if (IS_LOCAL(source)) { - if (mode_on) + if (!ServerInstance->IsChannel(parameter)) { - std::string ChanToJoin = params[0]; - chanrec* c = Srv->FindChannel(ChanToJoin); - if (c) - { - if (c->IsCustomModeSet('L')) - { - WriteServ(user->fd,"690 %s :Circular redirection, mode +L to %s not allowed.",user->nick,params[0].c_str()); - return 0; - } - } + source->WriteNumeric(ERR_NOSUCHCHANNEL, "%s :Invalid channel name", parameter.c_str()); + return MODEACTION_DENY; } - return 1; } - return 0; - } - virtual void On005Numeric(std::string &output) - { - std::stringstream line(output); - std::string temp1, temp2; - while (!line.eof()) - { - line >> temp1; - if (temp1.substr(0,10) == "CHANMODES=") - { - // By doing this we're *assuming* no other module has fucked up the CHANMODES= - // section of the 005 numeric. If they have, we're going DOWN in a blaze of glory, - // with a honking great EXCEPTION :) - temp1.insert(temp1.find(",")+1,"L"); - } - temp2 = temp2 + temp1 + " "; - } - output = temp2.substr(0,temp2.length()-1); - } - - virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname) - { - if (chan) + if (IS_LOCAL(source) && !source->IsOper()) { - if (chan->IsCustomModeSet('L')) + Channel* c = ServerInstance->FindChan(parameter); + if (!c) { - if (chan->limit >= Srv->CountUsers(chan)) - { - std::string channel = chan->GetModeParameter('L'); - WriteServ(user->fd,"470 %s :%s has become full, so you are automatically being transferred to the linked channel %s",user->nick,cname,channel.c_str()); - Srv->JoinUserToChannel(user,channel.c_str(),""); - return 1; - } + source->WriteNumeric(690, ":Target channel %s must exist to be set as a redirect.",parameter.c_str()); + return MODEACTION_DENY; + } + else if (c->GetPrefixValue(source) < OP_VALUE) + { + source->WriteNumeric(690, ":You must be opped on %s to set it as a redirect.",parameter.c_str()); + return MODEACTION_DENY; } } - } - virtual ~ModuleRedirect() - { - delete Srv; - } - - virtual Version GetVersion() - { - return Version(1,0,0,0); + /* + * We used to do some checking for circular +L here, but there is no real need for this any more especially as we + * now catch +L looping in PreJoin. Remove it, since O(n) logic makes me sad, and we catch it anyway. :) -- w00t + */ + ext.set(channel, parameter); + return MODEACTION_ALLOW; } - - virtual void OnUserConnect(userrec* user) + + void SerializeParam(Channel* chan, const std::string* str, std::string& out) { + out += *str; } - }; +/** Handles usermode +L to stop forced redirection and print an error. +*/ +class AntiRedirect : public SimpleUserModeHandler +{ + public: + AntiRedirect(Module* Creator) : SimpleUserModeHandler(Creator, "antiredirect", 'L') + { + if (!ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect")) + DisableAutoRegister(); + } +}; -class ModuleRedirectFactory : public ModuleFactory +class ModuleRedirect : public Module { + Redirect re; + AntiRedirect re_u; + ChanModeReference limitmode; + bool UseUsermode; + public: - ModuleRedirectFactory() + ModuleRedirect() + : re(this) + , re_u(this) + , limitmode(this, "limit") { } - - ~ModuleRedirectFactory() + + void init() CXX11_OVERRIDE { + /* Setting this here so it isn't changable by rehasing the config later. */ + UseUsermode = ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect"); } - - virtual Module * CreateModule() + + ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE { - return new ModuleRedirect; - } - -}; + if (chan) + { + if (chan->IsModeSet(re) && chan->IsModeSet(limitmode)) + { + if (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter(limitmode))) + { + const std::string& channel = *re.ext.get(chan); + /* sometimes broken ulines can make circular or chained +L, avoid this */ + Channel* destchan = ServerInstance->FindChan(channel); + if (destchan && destchan->IsModeSet(re)) + { + user->WriteNumeric(470, "%s * :You may not join this channel. A redirect is set, but you may not be redirected as it is a circular loop.", cname.c_str()); + return MOD_RES_DENY; + } + /* We check the bool value here to make sure we have it enabled, if we don't then + usermode +L might be assigned to something else. */ + if (UseUsermode && user->IsModeSet(re_u)) + { + user->WriteNumeric(470, "%s %s :Force redirection stopped.", cname.c_str(), channel.c_str()); + return MOD_RES_DENY; + } + else + { + user->WriteNumeric(470, "%s %s :You may not join this channel, so you are automatically being transferred to the redirect channel.", cname.c_str(), channel.c_str()); + Channel::JoinUser(user, channel); + return MOD_RES_DENY; + } + } + } + } + return MOD_RES_PASSTHRU; + } -extern "C" void * init_module( void ) -{ - return new ModuleRedirectFactory; -} + Version GetVersion() CXX11_OVERRIDE + { + return Version("Provides channel mode +L (limit redirection) and user mode +L (no forced redirection)", VF_VENDOR); + } +}; +MODULE_INIT(ModuleRedirect)