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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2005 Craig Edwards <craigedwards@brainbox.cc>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
/* $ModDesc: Implements config tags which allow blocking of joins to channels */
class ModuleDenyChannels : public Module
{
private:
ConfigReader *Conf;
public:
ModuleDenyChannels(InspIRCd* Me) : Module(Me)
{
Conf = new ConfigReader(ServerInstance);
Implementation eventlist[] = { I_OnUserPreJoin, I_OnRehash };
ServerInstance->Modules->Attach(eventlist, this, 2);
}
virtual void OnRehash(User* user)
{
delete Conf;
Conf = new ConfigReader(ServerInstance);
/* check for redirect validity and loops/chains */
for (int i =0; i < Conf->Enumerate("badchan"); i++)
{
std::string name = Conf->ReadValue("badchan","name",i);
std::string redirect = Conf->ReadValue("badchan","redirect",i);
if (!redirect.empty())
{
if (!ServerInstance->IsChannel(redirect.c_str(), ServerInstance->Config->Limits.ChanMax))
{
if (user)
user->WriteServ("NOTICE %s :Invalid badchan redirect '%s'", user->nick.c_str(), redirect.c_str());
throw ModuleException("Invalid badchan redirect, not a channel");
}
for (int j =0; j < Conf->Enumerate("badchan"); j++)
{
if (InspIRCd::Match(redirect, Conf->ReadValue("badchan","name",j)))
{
bool goodchan = false;
for (int k =0; k < Conf->Enumerate("goodchan"); k++)
{
if (InspIRCd::Match(redirect, Conf->ReadValue("goodchan","name",k)))
goodchan = true;
}
if (!goodchan)
{
/* <badchan:redirect> is a badchan */
if (user)
user->WriteServ("NOTICE %s :Badchan %s redirects to badchan %s", user->nick.c_str(), name.c_str(), redirect.c_str());
throw ModuleException("Badchan redirect loop");
}
}
}
}
}
}
virtual ~ModuleDenyChannels()
{
delete Conf;
}
virtual Version GetVersion()
{
return Version("$Id$", VF_VENDOR,API_VERSION);
}
virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
{
for (int j =0; j < Conf->Enumerate("badchan"); j++)
{
if (InspIRCd::Match(cname, Conf->ReadValue("badchan","name",j)))
{
if (IS_OPER(user) && Conf->ReadFlag("badchan","allowopers",j))
{
return 0;
}
else
{
std::string reason = Conf->ReadValue("badchan","reason",j);
std::string redirect = Conf->ReadValue("badchan","redirect",j);
for (int i = 0; i < Conf->Enumerate("goodchan"); i++)
{
if (InspIRCd::Match(cname, Conf->ReadValue("goodchan", "name", i)))
{
return 0;
}
}
if (ServerInstance->IsChannel(redirect.c_str(), ServerInstance->Config->Limits.ChanMax))
{
/* simple way to avoid potential loops: don't redirect to +L channels */
Channel *newchan = ServerInstance->FindChan(redirect);
if ((!newchan) || (!(newchan->IsModeSet('L'))))
{
user->WriteNumeric(926, "%s %s :Channel %s is forbidden, redirecting to %s: %s",user->nick.c_str(),cname,cname,redirect.c_str(), reason.c_str());
Channel::JoinUser(ServerInstance,user,redirect.c_str(),false,"",false,ServerInstance->Time());
return 1;
}
}
user->WriteNumeric(926, "%s %s :Channel %s is forbidden: %s",user->nick.c_str(),cname,cname,reason.c_str());
return 1;
}
}
}
return 0;
}
};
MODULE_INIT(ModuleDenyChannels)
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