netconf/netconf-ssh/src/main/java/org/opendaylight/netconf/ssh/osgi/NetconfSSHActivator.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. 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 package org.opendaylight.netconf.ssh.osgi;
   9
  10 import io.netty.channel.local.LocalAddress;
  11 import io.netty.channel.nio.NioEventLoopGroup;
  12 import java.io.File;
  13 import java.io.IOException;
  14 import java.net.InetSocketAddress;
  15 import java.util.concurrent.ExecutorService;
  16 import java.util.concurrent.Executors;
  17 import java.util.concurrent.ScheduledExecutorService;
  18 import org.apache.sshd.common.util.security.SecurityUtils;
  19 import org.apache.sshd.common.util.threads.ThreadUtils;
  20 import org.apache.sshd.server.keyprovider.AbstractGeneratorHostKeyProvider;
  21 import org.opendaylight.netconf.ssh.SshProxyServer;
  22 import org.opendaylight.netconf.ssh.SshProxyServerConfigurationBuilder;
  23 import org.opendaylight.netconf.util.osgi.NetconfConfigUtil;
  24 import org.opendaylight.netconf.util.osgi.NetconfConfiguration;
  25 import org.osgi.framework.BundleActivator;
  26 import org.osgi.framework.BundleContext;
  27 import org.osgi.framework.InvalidSyntaxException;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 public class NetconfSSHActivator implements BundleActivator {
  32     private static final Logger LOG = LoggerFactory.getLogger(NetconfSSHActivator.class);
  33
  34     private static final java.lang.String ALGORITHM = "RSA";
  35     private static final int KEY_SIZE = 4096;
  36     public static final int POOL_SIZE = 8;
  37     private static final int DEFAULT_IDLE_TIMEOUT = Integer.MAX_VALUE;
  38
  39     private ScheduledExecutorService minaTimerExecutor;
  40     private NioEventLoopGroup clientGroup;
  41     private ExecutorService nioExecutor;
  42     private AuthProviderTracker authProviderTracker;
  43
  44     private SshProxyServer server;
  45
  46     @Override
  47     public void start(final BundleContext bundleContext) throws IOException, InvalidSyntaxException {
  48         minaTimerExecutor = Executors.newScheduledThreadPool(POOL_SIZE,
  49             runnable -> new Thread(runnable, "netconf-ssh-server-mina-timers"));
  50         clientGroup = new NioEventLoopGroup();
  51         nioExecutor = ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", POOL_SIZE);
  52         server = startSSHServer(bundleContext);
  53     }
  54
  55     @Override
  56     public void stop(final BundleContext context) throws IOException {
  57         if (server != null) {
  58             server.close();
  59         }
  60
  61         if (authProviderTracker != null) {
  62             authProviderTracker.stop();
  63         }
  64
  65         if (nioExecutor != null) {
  66             nioExecutor.shutdownNow();
  67         }
  68
  69         if (clientGroup != null) {
  70             clientGroup.shutdownGracefully();
  71         }
  72
  73         if (minaTimerExecutor != null) {
  74             minaTimerExecutor.shutdownNow();
  75         }
  76     }
  77
  78     private SshProxyServer startSSHServer(final BundleContext bundleContext)
  79             throws IOException, InvalidSyntaxException {
  80         final NetconfConfiguration netconfConfiguration =
  81                 NetconfConfigUtil.getNetconfConfigurationService(bundleContext);
  82
  83         final InetSocketAddress sshSocketAddress = netconfConfiguration.getSshServerAddress();
  84         LOG.info("Starting netconf SSH server at {}", sshSocketAddress);
  85
  86         final LocalAddress localAddress = NetconfConfiguration.NETCONF_LOCAL_ADDRESS;
  87         authProviderTracker = new AuthProviderTracker(bundleContext);
  88
  89         final String path = netconfConfiguration.getPrivateKeyPath();
  90         LOG.trace("Starting netconf SSH server with path to ssh private key {}", path);
  91
  92         final SshProxyServer sshProxyServer = new SshProxyServer(minaTimerExecutor, clientGroup, nioExecutor);
  93         final AbstractGeneratorHostKeyProvider keyPairProvider = SecurityUtils.createGeneratorHostKeyProvider(null);
  94         keyPairProvider.setAlgorithm(ALGORITHM);
  95         keyPairProvider.setKeySize(KEY_SIZE);
  96         keyPairProvider.setFile(new File(path));
  97         sshProxyServer.bind(
  98                 new SshProxyServerConfigurationBuilder()
  99                         .setBindingAddress(sshSocketAddress)
 100                         .setLocalAddress(localAddress)
 101                         .setAuthenticator(authProviderTracker)
 102                         .setKeyPairProvider(keyPairProvider)
 103                         .setIdleTimeout(DEFAULT_IDLE_TIMEOUT)
 104                         .createSshProxyServerConfiguration());
 105         return sshProxyServer;
 106     }
 107 }