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      1 /*
      2  * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
      3  * Please refer to the LICENSE.txt for licensing details.
      4  */
      5 package ch.ethz.ssh2.packets;
      6 
      7 import java.io.IOException;
      8 
      9 /**
     10  * PacketUserauthRequestPassword.
     11  *
     12  * @author Christian Plattner
     13  * @version 2.50, 03/15/10
     14  */
     15 public class PacketUserauthRequestNone
     16 {
     17 	byte[] payload;
     18 
     19 	String userName;
     20 	String serviceName;
     21 
     22 	public PacketUserauthRequestNone(String serviceName, String user)
     23 	{
     24 		this.serviceName = serviceName;
     25 		this.userName = user;
     26 	}
     27 
     28 	public PacketUserauthRequestNone(byte payload[], int off, int len) throws IOException
     29 	{
     30 		this.payload = new byte[len];
     31 		System.arraycopy(payload, off, this.payload, 0, len);
     32 
     33 		TypesReader tr = new TypesReader(payload, off, len);
     34 
     35 		int packet_type = tr.readByte();
     36 
     37 		if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST)
     38 			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! (" + packet_type + ")");
     39 
     40 		userName = tr.readString();
     41 		serviceName = tr.readString();
     42 
     43 		String method = tr.readString();
     44 
     45 		if (method.equals("none") == false)
     46 			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST with type none!");
     47 
     48 		if (tr.remain() != 0)
     49 			throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!");
     50 	}
     51 
     52 	public byte[] getPayload()
     53 	{
     54 		if (payload == null)
     55 		{
     56 			TypesWriter tw = new TypesWriter();
     57 			tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
     58 			tw.writeString(userName);
     59 			tw.writeString(serviceName);
     60 			tw.writeString("none");
     61 			payload = tw.getBytes();
     62 		}
     63 		return payload;
     64 	}
     65 }
     66