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package com.trilead.ssh2.packets;

import java.io.IOException;

/**
 * PacketUserauthRequestPassword.
 * 
 * @author Christian Plattner, [email protected]
 * @version $Id: PacketUserauthRequestNone.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
 */
public class PacketUserauthRequestNone
{
	byte[] payload;

	String userName;
	String serviceName;

	public PacketUserauthRequestNone(String serviceName, String user)
	{
		this.serviceName = serviceName;
		this.userName = user;
	}

	public PacketUserauthRequestNone(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 + ")");

		userName = tr.readString();
		serviceName = tr.readString();

		String method = tr.readString();

		if (method.equals("none") == false)
			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST with type none!");

		if (tr.remain() != 0)
			throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!");
	}

	public byte[] getPayload()
	{
		if (payload == null)
		{
			TypesWriter tw = new TypesWriter();
			tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
			tw.writeString(userName);
			tw.writeString(serviceName);
			tw.writeString("none");
			payload = tw.getBytes();
		}
		return payload;
	}
}




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