/*
OrpheusMS: MapleStory Private Server based on OdinMS
Copyright (C) 2012 Aaron Weiss <aaron@deviant-core.net>
Patrick Huy <patrick.huy@frz.cc>
Matthias Butz <matze@odinms.de>
Jan Christian Meyer <vimes@odinms.de>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package net.mina;
import client.MapleClient;
import net.MaplePacket;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolEncoder;
import org.apache.mina.filter.codec.ProtocolEncoderOutput;
public class MaplePacketEncoder implements ProtocolEncoder {
public synchronized void encode(IoSession session, Object message, ProtocolEncoderOutput out) throws Exception {
final MapleClient client = (MapleClient) session.getAttribute(MapleClient.CLIENT_KEY);
if (client != null) {
final byte[] input = ((MaplePacket) message).getBytes();
final byte[] unencrypted = new byte[input.length];
System.arraycopy(input, 0, unencrypted, 0, input.length);
final byte[] ret = new byte[unencrypted.length + 4];
final byte[] header = client.getSendCrypto().getPacketHeader(unencrypted.length);
MapleCustomEncryption.encryptData(unencrypted);
synchronized (client.getSendCrypto()) {
client.getSendCrypto().crypt(unencrypted);
System.arraycopy(header, 0, ret, 0, 4);
System.arraycopy(unencrypted, 0, ret, 4, unencrypted.length);
IoBuffer out_buffer = IoBuffer.wrap(ret);
out.write(out_buffer);
}
} else // no client object created yet, send unencrypted (hello)
{
out.write(IoBuffer.wrap(((MaplePacket) message).getBytes()));
}
}
public void dispose(IoSession session) throws Exception {
}
}