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/*
* SaslPlain.java
* Copyright (C) 2004 The Free Software Foundation
*
* This file is part of GNU inetlib, a library.
*
* GNU inetlib is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNU inetlib 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Linking this library statically or dynamically with other modules is
* making a combined work based on this library. Thus, the terms and
* conditions of the GNU General Public License cover the whole
* combination.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obliged to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package gnu.inet.util;
import java.io.UnsupportedEncodingException;
import javax.security.sasl.SaslClient;
import javax.security.sasl.SaslException;
/**
* SASL mechanism for PLAIN.
*
* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
*/
public class SaslPlain
implements SaslClient
{
private String username;
private String password;
private boolean complete;
public SaslPlain(String username, String password)
{
this.username = username;
this.password = password;
}
public String getMechanismName()
{
return "PLAIN";
}
public boolean hasInitialResponse()
{
return true;
}
public byte[] evaluateChallenge(byte[] challenge)
throws SaslException
{
try
{
byte[] a = username.getBytes("UTF-8");
byte[] b = password.getBytes("UTF-8");
byte[] c = new byte[(a.length * 2) + b.length + 2];
System.arraycopy(a, 0, c, 0, a.length);
System.arraycopy(a, 0, c, a.length + 1, a.length);
System.arraycopy(b, 0, c, (a.length * 2) + 2, b.length);
complete = true;
return c;
}
catch (UnsupportedEncodingException e)
{
String msg = "Username or password contains illegal UTF-8";
throw new SaslException(msg, e);
}
}
public boolean isComplete()
{
return complete;
}
public byte[] unwrap(byte[] incoming, int off, int len)
throws SaslException
{
byte[] ret = new byte[len - off];
System.arraycopy(incoming, off, ret, 0, len);
return ret;
}
public byte[] wrap(byte[] outgoing, int off, int len)
throws SaslException
{
byte[] ret = new byte[len - off];
System.arraycopy(outgoing, off, ret, 0, len);
return ret;
}
public Object getNegotiatedProperty(String name)
{
return null;
}
public void dispose()
{
}
}
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