package com.trilead.ssh2.packets;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

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

	String userName;
	String serviceName;
	String password;
	String pkAlgoName;
	byte[] pk;
	byte[] sig;

	public PacketUserauthRequestPublicKey(String serviceName, String user,
			String pkAlgorithmName, byte[] pk, byte[] sig)
	{
		this.serviceName = serviceName;
		this.userName = user;
		this.pkAlgoName = pkAlgorithmName;
		this.pk = pk;
		this.sig = sig;
	}

	public PacketUserauthRequestPublicKey(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_USERAUTH_REQUEST)
			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! ("
					+ packet_type + ")");

		throw new IOException("Not implemented!");
	}

	public byte[] getPayload() throws UnsupportedEncodingException {
		if (payload == null)
		{
			TypesWriter tw = new TypesWriter();
			tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
			tw.writeString(userName, "UTF-8");
			tw.writeString(serviceName);
			tw.writeString("publickey");
			tw.writeBoolean(true);
			tw.writeString(pkAlgoName);
			tw.writeString(pk, 0, pk.length);
			tw.writeString(sig, 0, sig.length);
			payload = tw.getBytes();
		}
		return payload;
	}
}
