org.legacy.network.protocol.ondemand.XorEncoder.java Source code

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Here is the source code for org.legacy.network.protocol.ondemand.XorEncoder.java

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/**
 * Copyright (c) 2014 Legacy 814
 *
 * 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.
 */
package org.legacy.network.protocol.ondemand;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;

/**
 * @author Im Frizzy <skype:kfriz1998>
 * @since Jul 14, 2014
 */
public class XorEncoder extends MessageToByteEncoder<ByteBuf> {

    private int key = 0;

    /* (non-Javadoc)
     * @see io.netty.handler.codec.MessageToByteEncoder#encode(io.netty.channel.ChannelHandlerContext, java.lang.Object, io.netty.buffer.ByteBuf)
     */
    @Override
    protected void encode(ChannelHandlerContext ctx, ByteBuf in, ByteBuf out) throws Exception {
        while (out.isWritable()) {
            out.writeByte(in.readUnsignedByte() ^ key);
        }
    }

    public void setKey(int key) {
        this.key = key;
    }

}