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/*
* SaslCallbackHandler.java
* 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
*
* 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.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>
*/
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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