openflowjava/openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/core/TcpChannelInitializer.java

   1 /*
   2  * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.openflowjava.protocol.impl.core;
  10
  11 import io.netty.channel.Channel;
  12 import io.netty.channel.group.DefaultChannelGroup;
  13 import io.netty.channel.socket.SocketChannel;
  14 import io.netty.handler.ssl.SslHandler;
  15 import io.netty.util.concurrent.Future;
  16 import java.net.InetAddress;
  17 import java.util.Arrays;
  18 import java.util.Iterator;
  19 import java.util.List;
  20 import java.util.concurrent.TimeUnit;
  21 import javax.net.ssl.SSLEngine;
  22 import org.opendaylight.openflowjava.protocol.api.connection.TlsConfiguration;
  23 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionAdapterFactory;
  24 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionAdapterFactoryImpl;
  25 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionFacade;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * Initializes TCP / TLS channel.
  31  * @author michal.polkorab
  32  */
  33 public class TcpChannelInitializer extends ProtocolChannelInitializer<SocketChannel> {
  34
  35     private static final Logger LOG = LoggerFactory.getLogger(TcpChannelInitializer.class);
  36     private final DefaultChannelGroup allChannels;
  37     private final ConnectionAdapterFactory connectionAdapterFactory;
  38
  39     /**
  40      * Default constructor.
  41      */
  42     public TcpChannelInitializer() {
  43         this(new DefaultChannelGroup("netty-receiver", null), new ConnectionAdapterFactoryImpl());
  44     }
  45
  46     /**
  47      * Testing constructor.
  48      */
  49     protected TcpChannelInitializer(final DefaultChannelGroup channelGroup,
  50             final ConnectionAdapterFactory connAdaptorFactory) {
  51         allChannels = channelGroup;
  52         connectionAdapterFactory = connAdaptorFactory;
  53     }
  54
  55     @Override
  56     @SuppressWarnings("checkstyle:IllegalCatch")
  57     protected void initChannel(final SocketChannel ch) {
  58         if (ch.remoteAddress() != null) {
  59             final InetAddress switchAddress = ch.remoteAddress().getAddress();
  60             final int port = ch.localAddress().getPort();
  61             final int remotePort = ch.remoteAddress().getPort();
  62             LOG.debug("Incoming connection from (remote address): {}:{} --> :{}",
  63                 switchAddress.toString(), remotePort, port);
  64
  65             if (!getSwitchConnectionHandler().accept(switchAddress)) {
  66                 ch.disconnect();
  67                 LOG.debug("Incoming connection rejected");
  68                 return;
  69             }
  70         }
  71         LOG.debug("Incoming connection accepted - building pipeline");
  72         allChannels.add(ch);
  73         ConnectionFacade connectionFacade = null;
  74         connectionFacade = connectionAdapterFactory.createConnectionFacade(ch, null, useBarrier(),
  75                 getChannelOutboundQueueSize());
  76         try {
  77             LOG.debug("Calling OF plugin: {}", getSwitchConnectionHandler());
  78             getSwitchConnectionHandler().onSwitchConnected(connectionFacade);
  79             connectionFacade.checkListeners();
  80
  81             // If this channel is configured to support SSL it will only support SSL
  82             final TlsConfiguration tlsConfig = getTlsConfiguration();
  83             if (tlsConfig != null) {
  84                 final SslContextFactory sslFactory = new SslContextFactory(tlsConfig);
  85                 final SSLEngine engine = sslFactory.getServerContext().createSSLEngine();
  86                 engine.setNeedClientAuth(true);
  87                 engine.setUseClientMode(false);
  88                 List<String> suitesList = getTlsConfiguration().getCipherSuites();
  89                 if (suitesList != null && !suitesList.isEmpty()) {
  90                     LOG.debug("Requested Cipher Suites are: {}", suitesList);
  91                     engine.setEnabledCipherSuites(suitesList.toArray(new String[0]));
  92                     LOG.debug("Cipher suites enabled in SSLEngine are: {}",
  93                             Arrays.toString(engine.getEnabledCipherSuites()));
  94                 }
  95                 final SslHandler ssl = new SslHandler(engine);
  96                 final Future<Channel> handshakeFuture = ssl.handshakeFuture();
  97                 final ConnectionFacade finalConnectionFacade = connectionFacade;
  98                 handshakeFuture.addListener(future -> finalConnectionFacade.onSwitchCertificateIdentified(
  99                     sslFactory.getSwitchCertificateChain()));
 100                 handshakeFuture.addListener(future -> finalConnectionFacade.fireConnectionReadyNotification());
 101                 ch.pipeline().addLast(PipelineHandlers.SSL_HANDLER.name(), ssl);
 102             }
 103             ch.pipeline().addLast(PipelineHandlers.OF_FRAME_DECODER.name(),
 104                     new OFFrameDecoder(connectionFacade, tlsConfig != null));
 105             ch.pipeline().addLast(PipelineHandlers.OF_VERSION_DETECTOR.name(), new OFVersionDetector());
 106             final OFDecoder ofDecoder = new OFDecoder();
 107             ofDecoder.setDeserializationFactory(getDeserializationFactory());
 108             ch.pipeline().addLast(PipelineHandlers.OF_DECODER.name(), ofDecoder);
 109             final OFEncoder ofEncoder = new OFEncoder();
 110             ofEncoder.setSerializationFactory(getSerializationFactory());
 111             ch.pipeline().addLast(PipelineHandlers.OF_ENCODER.name(), ofEncoder);
 112             ch.pipeline().addLast(PipelineHandlers.IDLE_HANDLER.name(),
 113                     new IdleHandler(getSwitchIdleTimeout(), TimeUnit.MILLISECONDS));
 114             ch.pipeline().addLast(PipelineHandlers.DELEGATING_INBOUND_HANDLER.name(),
 115                     new DelegatingInboundHandler(connectionFacade));
 116
 117             if (tlsConfig == null) {
 118                 connectionFacade.fireConnectionReadyNotification();
 119             }
 120         } catch (RuntimeException e) {
 121             LOG.warn("Failed to initialize channel", e);
 122             ch.close();
 123         }
 124     }
 125
 126     /**
 127      * Returns the connection iterator.
 128      *
 129      * @return iterator through active connections
 130      */
 131     public Iterator<Channel> getConnectionIterator() {
 132         return allChannels.iterator();
 133     }
 134
 135     /**
 136      * Returns the number of active channels.
 137      *
 138      * @return amount of active channels
 139      */
 140     public int size() {
 141         return allChannels.size();
 142     }
 143 }