| /* |
| * |
| * 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.transport.network.security.sasl; |
| |
| |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import javax.security.sasl.SaslException; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.transport.ByteBufferSender; |
| import org.apache.qpid.transport.SenderException; |
| |
| public class SASLSender extends SASLEncryptor implements ByteBufferSender |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(SASLSender.class); |
| |
| private ByteBufferSender delegate; |
| private byte[] appData; |
| private final AtomicBoolean closed = new AtomicBoolean(false); |
| |
| public SASLSender(ByteBufferSender delegate) |
| { |
| this.delegate = delegate; |
| LOGGER.debug("SASL Sender enabled"); |
| } |
| |
| public void close() |
| { |
| |
| if (!closed.getAndSet(true)) |
| { |
| delegate.close(); |
| if (isSecurityLayerEstablished()) |
| { |
| try |
| { |
| getSaslClient().dispose(); |
| } |
| catch (SaslException e) |
| { |
| throw new SenderException("Error closing SASL Sender",e); |
| } |
| } |
| } |
| } |
| |
| public void flush() |
| { |
| delegate.flush(); |
| } |
| |
| public void send(ByteBuffer buf) |
| { |
| if (closed.get()) |
| { |
| throw new SenderException("SSL Sender is closed"); |
| } |
| buf = buf.duplicate(); |
| if (isSecurityLayerEstablished()) |
| { |
| while (buf.hasRemaining()) |
| { |
| int length = Math.min(buf.remaining(), getSendBuffSize()); |
| LOGGER.debug("sendBuffSize {}", getSendBuffSize()); |
| LOGGER.debug("buf.remaining() {}", buf.remaining()); |
| |
| buf.get(appData, 0, length); |
| try |
| { |
| byte[] out = getSaslClient().wrap(appData, 0, length); |
| LOGGER.debug("out.length {}", out.length); |
| |
| delegate.send(ByteBuffer.wrap(out)); |
| } |
| catch (SaslException e) |
| { |
| LOGGER.error("Exception while encrypting data.", e); |
| throw new SenderException("SASL Sender, Error occurred while encrypting data",e); |
| } |
| } |
| } |
| else |
| { |
| delegate.send(buf); |
| } |
| } |
| |
| |
| public void securityLayerEstablished() |
| { |
| appData = new byte[getSendBuffSize()]; |
| LOGGER.debug("SASL Security Layer Established"); |
| } |
| |
| } |