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/*
* $Id: SaslCallbackHandler.java,v 1.3 2004/06/08 19:05:28 dog Exp $
* Copyright (C) 2002 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
*
* As a special exception, if you link this library with other files to
* produce an executable, this library does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* This exception does not however invalidate any other reasons why the
* executable file might be covered by the GNU General Public License.
*/
package gnu.inet.util;
import java.io.IOException;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
/**
* A callback handler that can manage username and password callbacks.
*
* @author <a href="mailto:dog@gnu.org">Chris Burdess</a>
* @version $Revision: 1.3 $ $Date: 2004/06/08 19:05:28 $
*/
public final class SaslCallbackHandler implements CallbackHandler
{
/*
* The username.
*/
private final String username;
/*
* The password.
*/
private final String password;
/**
* Constructor.
* @param username the value to respond to Name callbacks with
* @param password the value to respond to Password callbacks with
*/
public SaslCallbackHandler (String username, String password)
{
this.username = username;
this.password = password;
}
/**
* Handle callbacks.
*/
public void handle (Callback[]callbacks)
throws IOException, UnsupportedCallbackException
{
for (int i = 0; i < callbacks.length; i++)
{
if (callbacks[i] instanceof NameCallback)
{
NameCallback nc = (NameCallback) callbacks[i];
nc.setName (username);
}
else if (callbacks[i] instanceof PasswordCallback)
{
PasswordCallback pc = (PasswordCallback) callbacks[i];
pc.setPassword (password.toCharArray ());
}
else
throw new UnsupportedCallbackException (callbacks[i]);
}
}
}
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