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package org.apache.qpid.transport.network.security.sasl;
/*
*
* 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.
*
*/
import org.apache.qpid.transport.Receiver;
import org.apache.qpid.transport.SenderException;
import org.apache.qpid.transport.util.Logger;
import javax.security.sasl.SaslException;
import java.nio.ByteBuffer;
public class SASLReceiver extends SASLEncryptor implements Receiver<ByteBuffer> {
private Receiver<ByteBuffer> delegate;
private byte[] netData;
private static final Logger log = Logger.get(SASLReceiver.class);
public SASLReceiver(Receiver<ByteBuffer> delegate)
{
this.delegate = delegate;
}
public void closed()
{
delegate.closed();
}
public void exception(Throwable t)
{
delegate.exception(t);
}
public void received(ByteBuffer buf)
{
if (isSecurityLayerEstablished())
{
while (buf.hasRemaining())
{
int length = Math.min(buf.remaining(), getRecvBuffSize());
buf.get(netData, 0, length);
try
{
byte[] out = getSaslClient().unwrap(netData, 0, length);
delegate.received(ByteBuffer.wrap(out));
}
catch (SaslException e)
{
throw new SenderException("SASL Sender, Error occurred while encrypting data",e);
}
}
}
else
{
delegate.received(buf);
}
}
public void securityLayerEstablished()
{
netData = new byte[getRecvBuffSize()];
log.debug("SASL Security Layer Established");
}
}
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