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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.qpid.client.security.amqplain;
import org.apache.qpid.framing.FieldTable;
import javax.security.sasl.SaslClient;
import javax.security.sasl.SaslException;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.Callback;
/**
* Implements the "AMQPlain" authentication protocol that uses FieldTables to send username and pwd.
*
*/
public class AmqPlainSaslClient implements SaslClient
{
/**
* The name of this mechanism
*/
public static final String MECHANISM = "AMQPLAIN";
private CallbackHandler _cbh;
public AmqPlainSaslClient(CallbackHandler cbh)
{
_cbh = cbh;
}
public String getMechanismName()
{
return "AMQPLAIN";
}
public boolean hasInitialResponse()
{
return true;
}
public byte[] evaluateChallenge(byte[] challenge) throws SaslException
{
// we do not care about the prompt or the default name
NameCallback nameCallback = new NameCallback("prompt", "defaultName");
PasswordCallback pwdCallback = new PasswordCallback("prompt", false);
Callback[] callbacks = new Callback[]{nameCallback, pwdCallback};
try
{
_cbh.handle(callbacks);
}
catch (Exception e)
{
throw new SaslException("Error handling SASL callbacks: " + e, e);
}
FieldTable table = new FieldTable();
table.put("LOGIN", nameCallback.getName());
table.put("PASSWORD", pwdCallback.getPassword());
return table.getDataAsBytes();
}
public boolean isComplete()
{
return true;
}
public byte[] unwrap(byte[] incoming, int offset, int len) throws SaslException
{
throw new SaslException("Not supported");
}
public byte[] wrap(byte[] outgoing, int offset, int len) throws SaslException
{
throw new SaslException("Not supported");
}
public Object getNegotiatedProperty(String propName)
{
return null;
}
public void dispose() throws SaslException
{
_cbh = null;
}
}
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