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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.qpid.framing.FieldTableFactory;
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.sasl.SaslClient;
import javax.security.sasl.SaslException;
/**
* 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 = FieldTableFactory.newFieldTable();
table.setString("LOGIN", nameCallback.getName());
table.setString("PASSWORD", new String(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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