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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* 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
{
public:
ModuleDenyChannels()
{}
void init()
{
Implementation eventlist[] = { I_OnCheckJoin };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
ConfigTag* FindBadChan(const std::string& cname)
{
ConfigTagList tags = ServerInstance->Config->GetTags("badchan");
for (ConfigIter i = tags.first; i != tags.second; ++i)
{
if (InspIRCd::Match(cname, i->second->getString("name")))
{
// found a bad channel. Maybe it has a goodchan pattern?
tags = ServerInstance->Config->GetTags("goodchan");
for (ConfigIter j = tags.first; j != tags.second; ++j)
{
if (InspIRCd::Match(cname, i->second->getString("name")))
return NULL;
}
// nope
return i->second;
}
}
// no <badchan> found
return NULL;
}
void ReadConfig(ConfigReadStatus& stat)
{
/* check for redirect validity and loops/chains */
ConfigTagList tags = ServerInstance->Config->GetTags("badchan");
for (ConfigIter i = tags.first; i != tags.second; ++i)
{
std::string name = i->second->getString("name");
std::string redirect = i->second->getString("redirect");
if (!redirect.empty())
{
if (!ServerInstance->IsChannel(redirect.c_str(), ServerInstance->Config->Limits.ChanMax))
{
stat.ReportError(i->second, "Invalid badchan redirect, not a channel", true);
}
ConfigTag* tag = FindBadChan(redirect);
if (tag)
{
/* <badchan:redirect> is a badchan */
stat.ReportError(i->second, "Badchan redirect loop", true);
}
}
}
}
virtual ~ModuleDenyChannels()
{
}
virtual Version GetVersion()
{
return Version("Implements config tags which allow blocking of joins to channels", VF_VENDOR);
}
void OnCheckJoin(ChannelPermissionData& join)
{
if (join.result != MOD_RES_PASSTHRU)
return;
ConfigTag* tag = FindBadChan(join.channel);
if (!tag)
return;
if (IS_OPER(join.user) && tag->getBool("allowopers"))
return;
std::string reason = tag->getString("reason");
std::string redirect = tag->getString("redirect");
join.result = MOD_RES_DENY;
if (!ServerInstance->RedirectJoin.get(join.user) && ServerInstance->IsChannel(redirect.c_str(), ServerInstance->Config->Limits.ChanMax))
{
join.user->WriteNumeric(926, "%s %s :Channel %s is forbidden, redirecting to %s: %s",
join.user->nick.c_str(),join.channel.c_str(),join.channel.c_str(),redirect.c_str(), reason.c_str());
ServerInstance->RedirectJoin.set(join.user, 1);
Channel::JoinUser(join.user,redirect.c_str(),false,"",false,ServerInstance->Time());
ServerInstance->RedirectJoin.set(join.user, 0);
} else {
join.user->WriteNumeric(926, "%s %s :Channel %s is forbidden: %s",
join.user->nick.c_str(),join.channel.c_str(),join.channel.c_str(),reason.c_str());
}
}
};
MODULE_INIT(ModuleDenyChannels)
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