package com.trilead.ssh2.packets;

import java.io.IOException;

/**
 * PacketIgnore.
 *
 * @author Christian Plattner, plattner@trilead.com
 * @version $Id: PacketIgnore.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
 */
public class PacketIgnore {
    byte[] payload;

    byte[] data;

    public void setData(byte[] data) {
        this.data = data;
        payload = null;
    }

    public PacketIgnore() {
    }

    public PacketIgnore(byte payload[], int off, int len) throws IOException {
        this.payload = new byte[len];
        System.arraycopy(payload, off, this.payload, 0, len);
        TypesReader tr = new TypesReader(payload, off, len);
        int packet_type = tr.readByte();

        if (packet_type != Packets.SSH_MSG_IGNORE)
            throw new IOException("This is not a SSH_MSG_IGNORE packet! (" + packet_type + ")");

        /* Could parse String body */
    }

    public byte[] getPayload() {
        if (payload == null) {
            TypesWriter tw = new TypesWriter();
            tw.writeByte(Packets.SSH_MSG_IGNORE);

            if (data != null)
                tw.writeString(data, 0, data.length);
            else
                tw.writeString("");

            payload = tw.getBytes();
        }

        return payload;
    }
}