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/*
 * InspIRCd -- Internet Relay Chat Daemon
 *
 *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
 *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
 *   Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
 *   Copyright (C) 2004, 2006 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: Provides support for oper-only chans via the +O channel mode */

class OperChans : public SimpleChannelModeHandler
{
 public:
	/* This is an oper-only mode */
	OperChans(Module* Creator) : SimpleChannelModeHandler(Creator, "operonly", 'O')
	{
		oper = true;
	}
};

class ModuleOperChans : public Module
{
	OperChans oc;
 public:
	ModuleOperChans() : oc(this)
	{
		if (!ServerInstance->Modes->AddMode(&oc))
			throw ModuleException("Could not add new modes!");
		Implementation eventlist[] = { I_OnCheckBan, I_On005Numeric, I_OnUserPreJoin };
		ServerInstance->Modules->Attach(eventlist, this, 3);
	}

	ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
	{
		if (chan && chan->IsModeSet('O') && !IS_OPER(user))
		{
			user->WriteNumeric(ERR_CANTJOINOPERSONLY, "%s %s :Only IRC operators may join %s (+O is set)",
				user->nick.c_str(), chan->name.c_str(), chan->name.c_str());
			return MOD_RES_DENY;
		}
		return MOD_RES_PASSTHRU;
	}

	ModResult OnCheckBan(User *user, Channel *c, const std::string& mask)
	{
		if ((mask.length() > 2) && (mask[0] == 'O') && (mask[1] == ':'))
		{
			if (IS_OPER(user) && InspIRCd::Match(user->oper->name, mask.substr(2)))
				return MOD_RES_DENY;
		}
		return MOD_RES_PASSTHRU;
	}

	void On005Numeric(std::string &output)
	{
		ServerInstance->AddExtBanChar('O');
	}

	~ModuleOperChans()
	{
	}

	Version GetVersion()
	{
		return Version("Provides support for oper-only chans via the +O channel mode and 'O' extban", VF_VENDOR);
	}
};

MODULE_INIT(ModuleOperChans)