opendaylight/netconf/netconf-ssh/src/test/java/org/opendaylight/controller/netconf/netty/SSHTest.java

   1 /*
   2  * Copyright (c) 2014 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
   9 package org.opendaylight.controller.netconf.netty;
  10
  11 import static org.junit.Assert.assertEquals;
  12 import static org.junit.Assert.assertFalse;
  13 import static org.junit.Assert.assertTrue;
  14
  15 import com.google.common.base.Stopwatch;
  16 import io.netty.bootstrap.Bootstrap;
  17 import io.netty.channel.ChannelInitializer;
  18 import io.netty.channel.EventLoopGroup;
  19 import io.netty.channel.nio.NioEventLoopGroup;
  20 import io.netty.channel.socket.nio.NioSocketChannel;
  21 import io.netty.util.HashedWheelTimer;
  22 import java.net.InetSocketAddress;
  23 import java.nio.file.Files;
  24 import java.util.concurrent.ExecutorService;
  25 import java.util.concurrent.Executors;
  26 import java.util.concurrent.ScheduledExecutorService;
  27 import java.util.concurrent.TimeUnit;
  28 import org.apache.sshd.server.PasswordAuthenticator;
  29 import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
  30 import org.apache.sshd.server.session.ServerSession;
  31 import org.junit.AfterClass;
  32 import org.junit.BeforeClass;
  33 import org.junit.Test;
  34 import org.opendaylight.controller.netconf.netty.EchoClientHandler.State;
  35 import org.opendaylight.controller.netconf.nettyutil.handler.ssh.authentication.LoginPassword;
  36 import org.opendaylight.controller.netconf.nettyutil.handler.ssh.client.AsyncSshHandler;
  37 import org.opendaylight.controller.netconf.ssh.SshProxyServer;
  38 import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 public class SSHTest {
  43     public static final Logger logger = LoggerFactory.getLogger(SSHTest.class);
  44     public static final String AHOJ = "ahoj\n";
  45
  46     private static EventLoopGroup nettyGroup;
  47     private static HashedWheelTimer hashedWheelTimer;
  48     private static ExecutorService nioExec;
  49     private static ScheduledExecutorService minaTimerEx;
  50
  51     @BeforeClass
  52     public static void setUp() throws Exception {
  53         hashedWheelTimer = new HashedWheelTimer();
  54         nettyGroup = new NioEventLoopGroup();
  55         nioExec = Executors.newFixedThreadPool(1);
  56         minaTimerEx = Executors.newScheduledThreadPool(1);
  57     }
  58
  59     @AfterClass
  60     public static void tearDown() throws Exception {
  61         hashedWheelTimer.stop();
  62         nettyGroup.shutdownGracefully().await();
  63         minaTimerEx.shutdownNow();
  64         nioExec.shutdownNow();
  65     }
  66
  67     @Test
  68     public void test() throws Exception {
  69         new Thread(new EchoServer(), "EchoServer").start();
  70
  71         final InetSocketAddress addr = new InetSocketAddress("127.0.0.1", 10831);
  72         final SshProxyServer sshProxyServer = new SshProxyServer(minaTimerEx, nettyGroup, nioExec);
  73         sshProxyServer.bind(addr, NetconfConfigUtil.getNetconfLocalAddress(),
  74                 new PasswordAuthenticator() {
  75                     @Override
  76                     public boolean authenticate(final String username, final String password, final ServerSession session) {
  77                         return true;
  78                     }
  79                 }, new PEMGeneratorHostKeyProvider(Files.createTempFile("prefix", "suffix").toAbsolutePath().toString()));
  80
  81         final EchoClientHandler echoClientHandler = connectClient(addr);
  82
  83         Stopwatch stopwatch = new Stopwatch().start();
  84         while(echoClientHandler.isConnected() == false && stopwatch.elapsed(TimeUnit.SECONDS) < 30) {
  85             Thread.sleep(500);
  86         }
  87         assertTrue(echoClientHandler.isConnected());
  88         logger.info("connected, writing to client");
  89         echoClientHandler.write(AHOJ);
  90
  91         // check that server sent back the same string
  92         stopwatch = stopwatch.reset().start();
  93         while (echoClientHandler.read().endsWith(AHOJ) == false && stopwatch.elapsed(TimeUnit.SECONDS) < 30) {
  94             Thread.sleep(500);
  95         }
  96
  97         try {
  98             final String read = echoClientHandler.read();
  99             assertTrue(read + " should end with " + AHOJ, read.endsWith(AHOJ));
 100         } finally {
 101             logger.info("Closing socket");
 102             sshProxyServer.close();
 103         }
 104     }
 105
 106     public EchoClientHandler connectClient(final InetSocketAddress address) {
 107         final EchoClientHandler echoClientHandler = new EchoClientHandler();
 108         final ChannelInitializer<NioSocketChannel> channelInitializer = new ChannelInitializer<NioSocketChannel>() {
 109             @Override
 110             public void initChannel(final NioSocketChannel ch) throws Exception {
 111                 ch.pipeline().addFirst(AsyncSshHandler.createForNetconfSubsystem(new LoginPassword("a", "a")));
 112                 ch.pipeline().addLast(echoClientHandler);
 113             }
 114         };
 115         final Bootstrap b = new Bootstrap();
 116
 117         b.group(nettyGroup)
 118                 .channel(NioSocketChannel.class)
 119                 .handler(channelInitializer);
 120
 121         // Start the client.
 122         b.connect(address).addListener(echoClientHandler);
 123         return echoClientHandler;
 124     }
 125
 126     @Test
 127     public void testClientWithoutServer() throws Exception {
 128         final InetSocketAddress address = new InetSocketAddress(12345);
 129         final EchoClientHandler echoClientHandler = connectClient(address);
 130         final Stopwatch stopwatch = new Stopwatch().start();
 131         while(echoClientHandler.getState() == State.CONNECTING && stopwatch.elapsed(TimeUnit.SECONDS) < 5) {
 132             Thread.sleep(100);
 133         }
 134         assertFalse(echoClientHandler.isConnected());
 135         assertEquals(State.CONNECTION_CLOSED, echoClientHandler.getState());
 136     }
 137
 138 }