org.spout.vanilla.protocol.codec.auth.EncryptionKeyRequestCodec.java Source code

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Here is the source code for org.spout.vanilla.protocol.codec.auth.EncryptionKeyRequestCodec.java

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/*
 * This file is part of Vanilla.
 *
 * Copyright (c) 2011 Spout LLC <http://www.spout.org/>
 * Vanilla is licensed under the Spout License Version 1.
 *
 * Vanilla is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * In addition, 180 days after any changes are published, you can use the
 * software, incorporating those changes, under the terms of the MIT license,
 * as described in the Spout License Version 1.
 *
 * Vanilla 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 Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License,
 * the MIT license and the Spout License Version 1 along with this program.
 * If not, see <http://www.gnu.org/licenses/> for the GNU Lesser General Public
 * License and see <http://spout.in/licensev1> for the full license, including
 * the MIT license.
 */
package org.spout.vanilla.protocol.codec.auth;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

import org.spout.api.protocol.MessageCodec;

import org.spout.vanilla.protocol.VanillaByteBufUtils;
import org.spout.vanilla.protocol.msg.auth.EncryptionKeyRequestMessage;

public final class EncryptionKeyRequestCodec extends MessageCodec<EncryptionKeyRequestMessage> {
    public EncryptionKeyRequestCodec() {
        super(EncryptionKeyRequestMessage.class, 0xFD);
    }

    @Override
    public EncryptionKeyRequestMessage decode(ByteBuf buffer) {
        String sessionId = VanillaByteBufUtils.readString(buffer);
        int length = buffer.readShort() & 0xFFFF;
        byte[] publicKey = new byte[length];
        buffer.readBytes(publicKey);
        int tokenLength = buffer.readShort() & 0xFFFF;
        byte[] token = new byte[tokenLength];
        buffer.readBytes(token);
        return new EncryptionKeyRequestMessage(sessionId, false, publicKey, token);
    }

    @Override
    public ByteBuf encode(EncryptionKeyRequestMessage message) {
        ByteBuf buffer = Unpooled.buffer();
        VanillaByteBufUtils.writeString(buffer, message.getSessionId());
        byte[] publicKey = message.getSecretArray();
        buffer.writeShort((short) publicKey.length);
        buffer.writeBytes(publicKey);
        buffer.writeShort((short) message.getVerifyTokenArray().length);
        buffer.writeBytes(message.getVerifyTokenArray());
        return buffer;
    }
}