/*
 * Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @author GeyserMC
 * @link https://github.com/GeyserMC/Geyser
 */

package org.geysermc.geyser.network.netty;

import io.netty.channel.local.LocalChannel;
import io.netty.channel.local.LocalServerChannel;

/**
 * If the incoming channel if an instance of LocalChannelWithRemoteAddress, this server creates a LocalChannelWrapper
 * for the other end and attaches the spoofed remote address
 */
public class LocalServerChannelWrapper extends LocalServerChannel {
    @Override
    protected LocalChannel newLocalChannel(LocalChannel peer) {
        // LocalChannel here should be an instance of LocalChannelWithRemoteAddress, which we can use to set the "remote address" on the other end
        if (peer instanceof LocalChannelWithRemoteAddress) {
            LocalChannelWrapper channel = new LocalChannelWrapper(this, peer);
            channel.wrapper().remoteAddress(((LocalChannelWithRemoteAddress) peer).spoofedRemoteAddress());
            return channel;
        }
        return super.newLocalChannel(peer);
    }
}
