org.apache.sshd.common.PropertyResolverUtils Java Examples

@Test
public void testClientWithHeartBeat() throws Exception {
    SshClient client = setupTestClient();
    PropertyResolverUtils.updateProperty(client, ClientFactoryManager.HEARTBEAT_INTERVAL, HEARTBEAT);
    client.start();

    try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port).verify(7L, TimeUnit.SECONDS).getSession()) {
        session.addPasswordIdentity(getCurrentTestName());
        session.auth().verify(5L, TimeUnit.SECONDS);

        try (ClientChannel channel = session.createChannel(Channel.CHANNEL_SHELL)) {
            Collection<ClientChannelEvent> result =
                    channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), WAIT);
            assertTrue("Wrong channel state: " + result, result.contains(ClientChannelEvent.TIMEOUT));
        }
    } finally {
        client.stop();
    }
}
 

@Test
public void testClientWithHeartBeat() throws Exception {
    SshClient client = setupTestClient();
    PropertyResolverUtils.updateProperty(client, ClientFactoryManager.HEARTBEAT_INTERVAL, HEARTBEAT);
    client.start();

    try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port).verify(7L, TimeUnit.SECONDS).getSession()) {
        session.addPasswordIdentity(getCurrentTestName());
        session.auth().verify(5L, TimeUnit.SECONDS);

        try (ClientChannel channel = session.createChannel(Channel.CHANNEL_SHELL)) {
            Collection<ClientChannelEvent> result =
                    channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), WAIT);
            assertTrue("Wrong channel state: " + result, result.contains(ClientChannelEvent.TIMEOUT));
        }
    } finally {
        client.stop();
    }
}
 

@Before
public void setUp() throws Exception {
    sshd = setupTestServer();
    PropertyResolverUtils.updateProperty(sshd, ServerFactoryManager.WELCOME_BANNER, WELCOME);
    sshd.start();
    port = sshd.getPort();
}
 

@Test
public void testAuthenticationTimeout() throws Exception {
    final long testAuthTimeout = TimeUnit.SECONDS.toMillis(5L);
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.AUTH_TIMEOUT, testAuthTimeout);

    sshd.start();
    client.start();
    try (ClientSession s = client.connect(getCurrentTestName(), TEST_LOCALHOST, sshd.getPort()).verify(7L, TimeUnit.SECONDS).getSession()) {
        Collection<ClientSession.ClientSessionEvent> res = s.waitFor(EnumSet.of(ClientSession.ClientSessionEvent.CLOSED), 2L * testAuthTimeout);
        assertTrue("Session should be closed: " + res,
                   res.containsAll(EnumSet.of(ClientSession.ClientSessionEvent.CLOSED, ClientSession.ClientSessionEvent.WAIT_AUTH)));
    } finally {
        client.stop();
    }
}
 

@Test
public void testFailAuthenticationWithFuture() throws Exception {
    final int maxAllowedAuths = 10;
    PropertyResolverUtils.updateProperty(sshd, ServerAuthenticationManager.MAX_AUTH_REQUESTS, maxAllowedAuths);

    sshd.start();

    client.setServiceFactories(Arrays.asList(
            new ClientUserAuthServiceOld.Factory(),
            ClientConnectionServiceFactory.INSTANCE
    ));
    client.start();
    try (ClientSession s = client.connect(getCurrentTestName(), TEST_LOCALHOST, sshd.getPort()).verify(7L, TimeUnit.SECONDS).getSession()) {
        int nbTrials = 0;
        AuthFuture authFuture;
        do {
            nbTrials++;
            assertTrue("Number of trials below max.", nbTrials < 100);
            authFuture = s.getService(ClientUserAuthServiceOld.class)
                    .auth(new org.apache.sshd.deprecated.UserAuthPassword(s, "ssh-connection", "buggy"));
            assertTrue("Authentication wait failed", authFuture.await(5L, TimeUnit.SECONDS));
            assertTrue("Authentication not done", authFuture.isDone());
            assertFalse("Authentication unexpectedly successful", authFuture.isSuccess());
        } while (authFuture.getException() == null);

        Throwable t = authFuture.getException();
        assertNotNull("Missing auth future exception", t);
        assertTrue("Number trials (" + nbTrials + ") below min.=" + maxAllowedAuths, nbTrials > maxAllowedAuths);
    } finally {
        client.stop();
    }
}
 

@Test
public void testFailAuthenticationWithWaitFor() throws Exception {
    final int maxAllowedAuths = 10;
    PropertyResolverUtils.updateProperty(sshd, ServerAuthenticationManager.MAX_AUTH_REQUESTS, maxAllowedAuths);

    sshd.start();
    client.setServiceFactories(Arrays.asList(
            new ClientUserAuthServiceOld.Factory(),
            ClientConnectionServiceFactory.INSTANCE
    ));
    client.start();

    try (ClientSession s = client.connect(getCurrentTestName(), TEST_LOCALHOST, sshd.getPort()).verify(7L, TimeUnit.SECONDS).getSession()) {
        int nbTrials = 0;
        Collection<ClientSession.ClientSessionEvent> res = Collections.emptySet();
        Collection<ClientSession.ClientSessionEvent> mask =
                EnumSet.of(ClientSession.ClientSessionEvent.CLOSED, ClientSession.ClientSessionEvent.WAIT_AUTH);
        while (!res.contains(ClientSession.ClientSessionEvent.CLOSED)) {
            nbTrials++;
            s.getService(ClientUserAuthServiceOld.class)
                    .auth(new org.apache.sshd.deprecated.UserAuthPassword(s, "ssh-connection", "buggy"));
            res = s.waitFor(mask, TimeUnit.SECONDS.toMillis(5L));
            assertFalse("Timeout signalled", res.contains(ClientSession.ClientSessionEvent.TIMEOUT));
        }
        assertTrue("Number trials (" + nbTrials + ") below min.=" + maxAllowedAuths, nbTrials > maxAllowedAuths);
    } finally {
        client.stop();
    }
}
 

protected void setUp(long bytesLimit, long timeLimit, long packetsLimit) throws Exception {
    sshd = setupTestServer();
    if (bytesLimit > 0L) {
        PropertyResolverUtils.updateProperty(sshd, FactoryManager.REKEY_BYTES_LIMIT, bytesLimit);
    }
    if (timeLimit > 0L) {
        PropertyResolverUtils.updateProperty(sshd, FactoryManager.REKEY_TIME_LIMIT, timeLimit);
    }
    if (packetsLimit > 0L) {
        PropertyResolverUtils.updateProperty(sshd, FactoryManager.REKEY_PACKETS_LIMIT, packetsLimit);
    }

    sshd.start();
    port = sshd.getPort();
}
 

@Before
public void setUp() throws Exception {
    sshd = setupTestServer();
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.IDLE_TIMEOUT, TIMEOUT);
    sshd.setShellFactory(new TestEchoShellFactory());
    sshd.start();
    port = sshd.getPort();
}
 

@Before
public void setUp() throws Exception {
    sshd = setupTestServer();
    PropertyResolverUtils.updateProperty(sshd, ServerFactoryManager.WELCOME_BANNER, WELCOME);
    sshd.start();
    port = sshd.getPort();
}
 

@Before
public void setUp() throws Exception {
    sshd = setupTestServer();
    PropertyResolverUtils.updateProperty(sshd, ServerFactoryManager.AUTH_METHODS, UserAuthPublicKeyFactory.NAME);
    sshd.setPublickeyAuthenticator(new PublickeyAuthenticator() {
        @SuppressWarnings("synthetic-access")
        @Override
        public boolean authenticate(String username, PublicKey key, ServerSession session) {
            return delegate.authenticate(username, key, session);
        }
    });
    sshd.start();
    port = sshd.getPort();
}
 

protected ClientSession createNativeSession() throws Exception {
    client = setupTestClient();
    PropertyResolverUtils.updateProperty(client, FactoryManager.WINDOW_SIZE, 2048);
    PropertyResolverUtils.updateProperty(client, FactoryManager.MAX_PACKET_SIZE, 256);
    client.setTcpipForwardingFilter(AcceptAllForwardingFilter.INSTANCE);
    client.start();

    ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, sshPort).verify(7L, TimeUnit.SECONDS).getSession();
    session.addPasswordIdentity(getCurrentTestName());
    session.auth().verify(11L, TimeUnit.SECONDS);
    return session;
}
 

@Before
public void setUp() throws Exception {
    sshd = setupTestServer();
    PropertyResolverUtils.updateProperty(sshd, ServerFactoryManager.AUTH_METHODS, UserAuthPublicKeyFactory.NAME);
    sshd.setPublickeyAuthenticator(new PublickeyAuthenticator() {
        @SuppressWarnings("synthetic-access")
        @Override
        public boolean authenticate(String username, PublicKey key, ServerSession session) {
            return delegate.authenticate(username, key, session);
        }
    });
    sshd.start();
    port = sshd.getPort();
}
 

protected ClientSession createNativeSession() throws Exception {
    client = setupTestClient();
    PropertyResolverUtils.updateProperty(client, FactoryManager.WINDOW_SIZE, 2048);
    PropertyResolverUtils.updateProperty(client, FactoryManager.MAX_PACKET_SIZE, 256);
    client.setTcpipForwardingFilter(AcceptAllForwardingFilter.INSTANCE);
    client.start();

    ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, sshPort).verify(7L, TimeUnit.SECONDS).getSession();
    session.addPasswordIdentity(getCurrentTestName());
    session.auth().verify(11L, TimeUnit.SECONDS);
    return session;
}
 

@Test
public void testAuthenticationTimeout() throws Exception {
    final long testAuthTimeout = TimeUnit.SECONDS.toMillis(5L);
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.AUTH_TIMEOUT, testAuthTimeout);

    sshd.start();
    client.start();
    try (ClientSession s = client.connect(getCurrentTestName(), TEST_LOCALHOST, sshd.getPort()).verify(7L, TimeUnit.SECONDS).getSession()) {
        Collection<ClientSession.ClientSessionEvent> res = s.waitFor(EnumSet.of(ClientSession.ClientSessionEvent.CLOSED), 2L * testAuthTimeout);
        assertTrue("Session should be closed: " + res,
                   res.containsAll(EnumSet.of(ClientSession.ClientSessionEvent.CLOSED, ClientSession.ClientSessionEvent.WAIT_AUTH)));
    } finally {
        client.stop();
    }
}
 

@Test
public void testFailAuthenticationWithFuture() throws Exception {
    final int maxAllowedAuths = 10;
    PropertyResolverUtils.updateProperty(sshd, ServerAuthenticationManager.MAX_AUTH_REQUESTS, maxAllowedAuths);

    sshd.start();

    client.setServiceFactories(Arrays.asList(
            new ClientUserAuthServiceOld.Factory(),
            ClientConnectionServiceFactory.INSTANCE
    ));
    client.start();
    try (ClientSession s = client.connect(getCurrentTestName(), TEST_LOCALHOST, sshd.getPort()).verify(7L, TimeUnit.SECONDS).getSession()) {
        int nbTrials = 0;
        AuthFuture authFuture;
        do {
            nbTrials++;
            assertTrue("Number of trials below max.", nbTrials < 100);
            authFuture = s.getService(ClientUserAuthServiceOld.class)
                    .auth(new org.apache.sshd.deprecated.UserAuthPassword(s, "ssh-connection", "buggy"));
            assertTrue("Authentication wait failed", authFuture.await(5L, TimeUnit.SECONDS));
            assertTrue("Authentication not done", authFuture.isDone());
            assertFalse("Authentication unexpectedly successful", authFuture.isSuccess());
        } while (authFuture.getException() == null);

        Throwable t = authFuture.getException();
        assertNotNull("Missing auth future exception", t);
        assertTrue("Number trials (" + nbTrials + ") below min.=" + maxAllowedAuths, nbTrials > maxAllowedAuths);
    } finally {
        client.stop();
    }
}
 

@Test
public void testFailAuthenticationWithWaitFor() throws Exception {
    final int maxAllowedAuths = 10;
    PropertyResolverUtils.updateProperty(sshd, ServerAuthenticationManager.MAX_AUTH_REQUESTS, maxAllowedAuths);

    sshd.start();
    client.setServiceFactories(Arrays.asList(
            new ClientUserAuthServiceOld.Factory(),
            ClientConnectionServiceFactory.INSTANCE
    ));
    client.start();

    try (ClientSession s = client.connect(getCurrentTestName(), TEST_LOCALHOST, sshd.getPort()).verify(7L, TimeUnit.SECONDS).getSession()) {
        int nbTrials = 0;
        Collection<ClientSession.ClientSessionEvent> res = Collections.emptySet();
        Collection<ClientSession.ClientSessionEvent> mask =
                EnumSet.of(ClientSession.ClientSessionEvent.CLOSED, ClientSession.ClientSessionEvent.WAIT_AUTH);
        while (!res.contains(ClientSession.ClientSessionEvent.CLOSED)) {
            nbTrials++;
            s.getService(ClientUserAuthServiceOld.class)
                    .auth(new org.apache.sshd.deprecated.UserAuthPassword(s, "ssh-connection", "buggy"));
            res = s.waitFor(mask, TimeUnit.SECONDS.toMillis(5L));
            assertFalse("Timeout signalled", res.contains(ClientSession.ClientSessionEvent.TIMEOUT));
        }
        assertTrue("Number trials (" + nbTrials + ") below min.=" + maxAllowedAuths, nbTrials > maxAllowedAuths);
    } finally {
        client.stop();
    }
}
 

protected void setUp(long bytesLimit, long timeLimit, long packetsLimit) throws Exception {
    sshd = setupTestServer();
    if (bytesLimit > 0L) {
        PropertyResolverUtils.updateProperty(sshd, FactoryManager.REKEY_BYTES_LIMIT, bytesLimit);
    }
    if (timeLimit > 0L) {
        PropertyResolverUtils.updateProperty(sshd, FactoryManager.REKEY_TIME_LIMIT, timeLimit);
    }
    if (packetsLimit > 0L) {
        PropertyResolverUtils.updateProperty(sshd, FactoryManager.REKEY_PACKETS_LIMIT, packetsLimit);
    }

    sshd.start();
    port = sshd.getPort();
}
 

@Before
public void setUp() throws Exception {
    sshd = setupTestServer();
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.IDLE_TIMEOUT, TIMEOUT);
    sshd.setShellFactory(new TestEchoShellFactory());
    sshd.start();
    port = sshd.getPort();
}
 

@Before
public void setUp() throws Exception {
    sshd = setupTestServer();
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.WINDOW_SIZE, 2048);
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.MAX_PACKET_SIZE, 256);
    sshd.setTcpipForwardingFilter(AcceptAllForwardingFilter.INSTANCE);
    sshd.start();

    if (!requestsQ.isEmpty()) {
        requestsQ.clear();
    }

    final TcpipForwarderFactory factory = ValidateUtils.checkNotNull(sshd.getTcpipForwarderFactory(), "No TcpipForwarderFactory");
    sshd.setTcpipForwarderFactory(new TcpipForwarderFactory() {
        private final Class<?>[] interfaces = {TcpipForwarder.class};
        private final Map<String, String> method2req = new TreeMap<String, String>(String.CASE_INSENSITIVE_ORDER) {
            private static final long serialVersionUID = 1L;    // we're not serializing it...

            {
                put("localPortForwardingRequested", TcpipForwardHandler.REQUEST);
                put("localPortForwardingCancelled", CancelTcpipForwardHandler.REQUEST);
            }
        };

        @Override
        public TcpipForwarder create(ConnectionService service) {
            Thread thread = Thread.currentThread();
            ClassLoader cl = thread.getContextClassLoader();

            final TcpipForwarder forwarder = factory.create(service);
            return (TcpipForwarder) Proxy.newProxyInstance(cl, interfaces, new InvocationHandler() {
                @SuppressWarnings("synthetic-access")
                @Override
                public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                    Object result = method.invoke(forwarder, args);
                    String name = method.getName();
                    String request = method2req.get(name);
                    if (GenericUtils.length(request) > 0) {
                        if (requestsQ.offer(request)) {
                            log.info("Signal " + request);
                        } else {
                            log.error("Failed to offer request=" + request);
                        }
                    }
                    return result;
                }
            });
        }
    });
    sshPort = sshd.getPort();

    NioSocketAcceptor acceptor = new NioSocketAcceptor();
    acceptor.setHandler(new IoHandlerAdapter() {
        @Override
        public void messageReceived(IoSession session, Object message) throws Exception {
            IoBuffer recv = (IoBuffer) message;
            IoBuffer sent = IoBuffer.allocate(recv.remaining());
            sent.put(recv);
            sent.flip();
            session.write(sent);
        }
    });
    acceptor.setReuseAddress(true);
    acceptor.bind(new InetSocketAddress(0));
    echoPort = acceptor.getLocalAddress().getPort();
    this.acceptor = acceptor;
}
 

@SuppressWarnings("checkstyle:nestedtrydepth")
protected void runClient(String msg) throws Exception {
    try (SshClient client = setupTestClient()) {
        PropertyResolverUtils.updateProperty(client, FactoryManager.MAX_PACKET_SIZE, 1024 * 16);
        PropertyResolverUtils.updateProperty(client, FactoryManager.WINDOW_SIZE, 1024 * 8);
        client.setKeyExchangeFactories(Arrays.asList(
                ClientBuilder.DH2KEX.transform(BuiltinDHFactories.dhg1)));
        client.setCipherFactories(Arrays.<NamedFactory<Cipher>>asList(BuiltinCiphers.blowfishcbc));
        client.start();
        try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port).verify(7L, TimeUnit.SECONDS).getSession()) {
            session.addPasswordIdentity(getCurrentTestName());
            session.auth().verify(5L, TimeUnit.SECONDS);

            try (ByteArrayOutputStream out = new ByteArrayOutputStream();
                 ByteArrayOutputStream err = new ByteArrayOutputStream();
                 ClientChannel channel = session.createChannel(Channel.CHANNEL_SHELL)) {
                channel.setOut(out);
                channel.setErr(err);

                try {
                    channel.open().verify(9L, TimeUnit.SECONDS);
                    try (OutputStream pipedIn = channel.getInvertedIn()) {
                        msg += "\nexit\n";
                        pipedIn.write(msg.getBytes(StandardCharsets.UTF_8));
                        pipedIn.flush();
                    }

                    Collection<ClientChannelEvent> result =
                            channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), TimeUnit.SECONDS.toMillis(15L));
                    assertFalse("Timeout while waiting for channel closure", result.contains(ClientChannelEvent.TIMEOUT));
                } finally {
                    channel.close(false);
                }

                assertArrayEquals("Mismatched message data", msg.getBytes(StandardCharsets.UTF_8), out.toByteArray());
            }
        } finally {
            client.stop();
        }
    }
}
 

@Test
public void testWindowConsumptionWithAsyncStreams() throws Exception {
    sshd.setShellFactory(new AsyncEchoShellFactory());
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.WINDOW_SIZE, 1024);
    PropertyResolverUtils.updateProperty(client, FactoryManager.WINDOW_SIZE, 1024);

    client.start();

    try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port).verify(7L, TimeUnit.SECONDS).getSession()) {
        session.addPasswordIdentity(getCurrentTestName());
        session.auth().verify(5L, TimeUnit.SECONDS);

        try (ChannelShell channel = session.createShellChannel()) {
            channel.setStreaming(ClientChannel.Streaming.Async);
            channel.open().verify(5L, TimeUnit.SECONDS);

            try (Channel serverChannel = sshd.getActiveSessions().iterator().next().getService(ServerConnectionService.class).getChannels().iterator().next()) {
                Window clientLocal = channel.getLocalWindow();
                Window clientRemote = channel.getRemoteWindow();
                Window serverLocal = serverChannel.getLocalWindow();
                Window serverRemote = serverChannel.getRemoteWindow();

                final String message = "0123456789\n";
                final byte[] bytes = message.getBytes(StandardCharsets.UTF_8);
                final int nbMessages = 500;
                IoOutputStream output = channel.getAsyncIn();
                IoInputStream input = channel.getAsyncOut();
                for (int i = 0; i < nbMessages; i++) {
                    Buffer buffer = new ByteArrayBuffer(bytes);
                    output.write(buffer).verify(5L, TimeUnit.SECONDS);

                    waitForWindowNotEquals(clientLocal, serverRemote, "client local", "server remote", TimeUnit.SECONDS.toMillis(3L));

                    Buffer buf = new ByteArrayBuffer(16);
                    IoReadFuture future = input.read(buf);
                    future.verify(5L, TimeUnit.SECONDS);
                    assertEquals("Mismatched available data at line #" + i, message.length(), buf.available());
                    assertEquals("Mismatched data at line #" + i, message, new String(buf.array(), buf.rpos(), buf.available()));

                    waitForWindowEquals(clientLocal, serverRemote, "client local", "server remote", TimeUnit.SECONDS.toMillis(3L));
                    waitForWindowEquals(clientRemote, serverLocal, "client remote", "server local", TimeUnit.SECONDS.toMillis(3L));
                }
            }
        }
    } finally {
        client.stop();
    }
}
 

@Test
public void testWindowConsumptionWithDirectStreams() throws Exception {
    sshd.setShellFactory(new AsyncEchoShellFactory());
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.WINDOW_SIZE, 1024);
    PropertyResolverUtils.updateProperty(client, FactoryManager.WINDOW_SIZE, 1024);

    client.start();

    try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port).verify(7L, TimeUnit.SECONDS).getSession()) {
        session.addPasswordIdentity(getCurrentTestName());
        session.auth().verify(5L, TimeUnit.SECONDS);

        try (ChannelShell channel = session.createShellChannel();
             PipedInputStream inPis = new PipedInputStream();
             PipedOutputStream inPos = new PipedOutputStream(inPis);
             PipedInputStream outPis = new PipedInputStream();
             PipedOutputStream outPos = new PipedOutputStream(outPis)) {

            channel.setIn(inPis);
            channel.setOut(outPos);
            channel.open().verify(7L, TimeUnit.SECONDS);

            try (Channel serverChannel = sshd.getActiveSessions().iterator().next().getService(ServerConnectionService.class).getChannels().iterator().next()) {
                Window clientLocal = channel.getLocalWindow();
                Window clientRemote = channel.getRemoteWindow();
                Window serverLocal = serverChannel.getLocalWindow();
                Window serverRemote = serverChannel.getRemoteWindow();

                final String message = "0123456789";
                final int nbMessages = 500;

                try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(inPos));
                     BufferedReader reader = new BufferedReader(new InputStreamReader(outPis))) {
                    for (int i = 0; i < nbMessages; i++) {
                        writer.write(message);
                        writer.write('\n');
                        writer.flush();

                        waitForWindowEquals(clientLocal, serverRemote, "client local", "server remote", TimeUnit.SECONDS.toMillis(3L));

                        String line = reader.readLine();
                        assertEquals("Mismatched message at line #" + i, message, line);

                        waitForWindowEquals(clientLocal, serverRemote, "client local", "server remote", TimeUnit.SECONDS.toMillis(3L));
                        waitForWindowEquals(clientRemote, serverLocal, "client remote", "server local", TimeUnit.SECONDS.toMillis(3L));
                    }
                }
            }
        }
    } finally {
        client.stop();
    }
}
 

@Test
public void testWindowConsumptionWithInvertedStreams() throws Exception {
    sshd.setShellFactory(new AsyncEchoShellFactory());
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.WINDOW_SIZE, 1024);
    PropertyResolverUtils.updateProperty(client, FactoryManager.WINDOW_SIZE, 1024);
    client.start();

    try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port).verify(7L, TimeUnit.SECONDS).getSession()) {
        session.addPasswordIdentity(getCurrentTestName());
        session.auth().verify(5L, TimeUnit.SECONDS);

        try (ChannelShell channel = session.createShellChannel()) {
            channel.open().verify(5L, TimeUnit.SECONDS);

            try (Channel serverChannel = sshd.getActiveSessions().iterator().next().getService(ServerConnectionService.class).getChannels().iterator().next()) {
                Window clientLocal = channel.getLocalWindow();
                Window clientRemote = channel.getRemoteWindow();
                Window serverLocal = serverChannel.getLocalWindow();
                Window serverRemote = serverChannel.getRemoteWindow();

                final String message = "0123456789";
                final int nbMessages = 500;

                try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(channel.getInvertedIn()));
                     BufferedReader reader = new BufferedReader(new InputStreamReader(channel.getInvertedOut()))) {

                    for (int i = 0; i < nbMessages; i++) {
                        writer.write(message);
                        writer.write("\n");
                        writer.flush();

                        waitForWindowNotEquals(clientLocal, serverRemote, "client local", "server remote", TimeUnit.SECONDS.toMillis(3L));

                        String line = reader.readLine();
                        assertEquals("Mismatched message at line #" + i, message, line);

                        waitForWindowEquals(clientLocal, serverRemote, "client local", "server remote", TimeUnit.SECONDS.toMillis(3L));
                        waitForWindowEquals(clientRemote, serverLocal, "client remote", "server local", TimeUnit.SECONDS.toMillis(3L));
                    }
                }
            }
        }
    } finally {
        client.stop();
    }
}
 

public AsyncUserAuthService(Session s) throws SshException {
  ValidateUtils.checkTrue(s instanceof ServerSession, "Server side service used on client side");
  if (s.isAuthenticated()) {
    throw new SshException("Session already authenticated");
  }

  serverSession = (ServerSession) s;
  maxAuthRequests = PropertyResolverUtils.getIntProperty(s, ServerAuthenticationManager.MAX_AUTH_REQUESTS, ServerAuthenticationManager.DEFAULT_MAX_AUTH_REQUESTS);

  List<NamedFactory<UserAuth>> factories = ValidateUtils.checkNotNullAndNotEmpty(
      serverSession.getUserAuthFactories(), "No user auth factories for %s", s);
  userAuthFactories = new ArrayList<NamedFactory<UserAuth>>(factories);
  // Get authentication methods
  authMethods = new ArrayList<List<String>>();

  String mths = PropertyResolverUtils.getString(s, ServerFactoryManager.AUTH_METHODS);
  if (GenericUtils.isEmpty(mths)) {
    for (NamedFactory<UserAuth> uaf : factories) {
      authMethods.add(new ArrayList<String>(Collections.singletonList(uaf.getName())));
    }
  } else {
    if (log.isDebugEnabled()) {
      log.debug("ServerUserAuthService({}) using configured methods={}", s, mths);
    }
    for (String mthl : mths.split("\\s")) {
      authMethods.add(new ArrayList<String>(Arrays.asList(GenericUtils.split(mthl, ','))));
    }
  }
  // Verify all required methods are supported
  for (List<String> l : authMethods) {
    for (String m : l) {
      NamedFactory<UserAuth> factory = NamedResource.Utils.findByName(m, String.CASE_INSENSITIVE_ORDER, userAuthFactories);
      if (factory == null) {
        throw new SshException("Configured method is not supported: " + m);
      }
    }
  }

  if (log.isDebugEnabled()) {
    log.debug("ServerUserAuthService({}) authorized authentication methods: {}",
        s, NamedResource.Utils.getNames(userAuthFactories));
  }
}
 

private void hackVersion() {
	PropertyResolverUtils.updateProperty(sshd, ServerFactoryManager.SERVER_IDENTIFICATION, "SSHD");
}
 

public AsyncUserAuthService(Session s) throws SshException {
  ValidateUtils.checkTrue(s instanceof ServerSession, "Server side service used on client side");
  if (s.isAuthenticated()) {
    throw new SshException("Session already authenticated");
  }

  serverSession = (ServerSession) s;
  maxAuthRequests = PropertyResolverUtils.getIntProperty(s, ServerAuthenticationManager.MAX_AUTH_REQUESTS, ServerAuthenticationManager.DEFAULT_MAX_AUTH_REQUESTS);

  List<NamedFactory<UserAuth>> factories = ValidateUtils.checkNotNullAndNotEmpty(
      serverSession.getUserAuthFactories(), "No user auth factories for %s", s);
  userAuthFactories = new ArrayList<>(factories);
  // Get authentication methods
  authMethods = new ArrayList<>();

  String mths = PropertyResolverUtils.getString(s, ServerFactoryManager.AUTH_METHODS);
  if (GenericUtils.isEmpty(mths)) {
    for (NamedFactory<UserAuth> uaf : factories) {
      authMethods.add(new ArrayList<>(Collections.singletonList(uaf.getName())));
    }
  } else {
    if (log.isDebugEnabled()) {
      log.debug("ServerUserAuthService({}) using configured methods={}", s, mths);
    }
    for (String mthl : mths.split("\\s")) {
      authMethods.add(new ArrayList<>(Arrays.asList(GenericUtils.split(mthl, ','))));
    }
  }
  // Verify all required methods are supported
  for (List<String> l : authMethods) {
    for (String m : l) {
      NamedFactory<UserAuth> factory = NamedResource.Utils.findByName(m, String.CASE_INSENSITIVE_ORDER, userAuthFactories);
      if (factory == null) {
        throw new SshException("Configured method is not supported: " + m);
      }
    }
  }

  if (log.isDebugEnabled()) {
    log.debug("ServerUserAuthService({}) authorized authentication methods: {}",
        s, NamedResource.Utils.getNames(userAuthFactories));
  }
}
 

@Test
public void testConnectionRetry() throws Exception {
  FileRefTestUtil.writePredefinedTextToFile(testFolder.getRoot());
  Record record = createRecord();

  File targetFile = new File(testFolder.getRoot(), "target.txt");

  path = testFolder.getRoot().getAbsolutePath();
  setupServer(path, true);

  RemoteUploadTarget target = new RemoteUploadTarget(getBean(
      scheme.name() + "://localhost:" + port + "/",
      true,
      DataFormat.WHOLE_FILE,
      targetFile.getName(),
      WholeFileExistsAction.TO_ERROR
  ));
  TargetRunner runner = new TargetRunner.Builder(RemoteUploadDTarget.class, target).build();
  // No connections at first
  if (scheme == Scheme.sftp) {
    Assert.assertEquals(0, opened.get());
    Assert.assertEquals(0, closed.get());
  } else if (scheme == Scheme.ftp) {
    Assert.assertEquals(0, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber());
  }
  runner.runInit();
  // Now we've made one connection
  if (scheme == Scheme.sftp) {
    Assert.assertEquals(1, opened.get());
  } else if (scheme == Scheme.ftp) {
    Assert.assertEquals(1, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber());
  }
  // Set timeout after being idle to be really quick (1ms)
  if (scheme == Scheme.sftp) {
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.IDLE_TIMEOUT, 1);
  } else if (scheme == Scheme.ftp) {
    ftpServer.getServerContext().getListeners().get("default").getActiveSessions().iterator().next().setMaxIdleTime(1);
  }
  // Wait until that one connection has been closed
  if (scheme == Scheme.sftp) {
    await().atMost(10, TimeUnit.SECONDS).until(() -> Assert.assertEquals(1, closed.get()));
    Assert.assertEquals(1, closed.get());
  } else if (scheme == Scheme.ftp) {
    await().atMost(10, TimeUnit.SECONDS).until(
        () -> Assert.assertEquals(0, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber()));
    Assert.assertEquals(0, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber());
  }
  if (scheme == Scheme.sftp) {
    // Unset the timeout config for SFTP because it's global
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.IDLE_TIMEOUT, FactoryManager.DEFAULT_IDLE_TIMEOUT);
  }
  runner.runWrite(Collections.singletonList(record));
  // Now we've opened a new connection
  if (scheme == Scheme.sftp) {
    Assert.assertEquals(2, opened.get());
  } else if (scheme == Scheme.ftp) {
    Assert.assertEquals(1, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber());
    Assert.assertEquals(2, ftpServer.getServerContext().getFtpStatistics().getTotalConnectionNumber());
  }
  verifyTargetFile(targetFile);
  destroyAndValidate(runner);
}
 

@Test
public void testConnectionRetry() throws Exception {
  path = "remote-download-source/parseNoError";
  setupServer(path, false);

  RemoteDownloadSource origin = new TestRemoteDownloadSourceBuilder(scheme, port).build();
  SourceRunner runner = new SourceRunner.Builder(RemoteDownloadDSource.class, origin)
      .addOutputLane("lane")
      .build();
  // No connections at first
  if (scheme == Scheme.sftp) {
    Assert.assertEquals(0, opened.get());
    Assert.assertEquals(0, closed.get());
  } else if (scheme == Scheme.ftp) {
    Assert.assertEquals(0, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber());
  }
  runner.runInit();
  // Now we've made one connection
  if (scheme == Scheme.sftp) {
    Assert.assertEquals(1, opened.get());
  } else if (scheme == Scheme.ftp) {
    Assert.assertEquals(1, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber());
  }
  // Set timeout after being idle to be really quick (1ms)
  if (scheme == Scheme.sftp) {
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.IDLE_TIMEOUT, 1);
  } else if (scheme == Scheme.ftp) {
    ftpServer.getServerContext().getListeners().get("default").getActiveSessions().iterator().next().setMaxIdleTime(1);
  }
  // Wait until that one connection has been closed
  if (scheme == Scheme.sftp) {
    await().atMost(10, TimeUnit.SECONDS).until(() -> Assert.assertEquals(1, closed.get()));
    Assert.assertEquals(1, closed.get());
  } else if (scheme == Scheme.ftp) {
    await().atMost(10, TimeUnit.SECONDS).until(
        () -> Assert.assertEquals(0, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber()));
    Assert.assertEquals(0, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber());
  }
  if (scheme == Scheme.sftp) {
    // Unset the timeout config for SFTP because it's global
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.IDLE_TIMEOUT, FactoryManager.DEFAULT_IDLE_TIMEOUT);
  }
  StageRunner.Output op = runner.runProduce(RemoteDownloadSource.NOTHING_READ, 1000);
  // Now we've opened a new connection
  if (scheme == Scheme.sftp) {
    Assert.assertEquals(2, opened.get());
  } else if (scheme == Scheme.ftp) {
    Assert.assertEquals(1, ftpServer.getServerContext().getFtpStatistics().getCurrentConnectionNumber());
    Assert.assertEquals(2, ftpServer.getServerContext().getFtpStatistics().getTotalConnectionNumber());
  }
  List<Record> expected = getExpectedRecords();
  List<Record> actual = op.getRecords().get("lane");
  Assert.assertEquals(expected.size(), actual.size());
  for (int i = 0; i < 2; i++) {
    Assert.assertEquals(expected.get(i).get(), actual.get(i).get());
  }
  destroyAndValidate(runner);
}
 

@SuppressWarnings("checkstyle:nestedtrydepth")
protected void runClient(String msg) throws Exception {
    try (SshClient client = setupTestClient()) {
        PropertyResolverUtils.updateProperty(client, FactoryManager.MAX_PACKET_SIZE, 1024 * 16);
        PropertyResolverUtils.updateProperty(client, FactoryManager.WINDOW_SIZE, 1024 * 8);
        client.setKeyExchangeFactories(Arrays.asList(
                ClientBuilder.DH2KEX.transform(BuiltinDHFactories.dhg1)));
        client.setCipherFactories(Arrays.<NamedFactory<Cipher>>asList(BuiltinCiphers.blowfishcbc));
        client.start();
        try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port).verify(7L, TimeUnit.SECONDS).getSession()) {
            session.addPasswordIdentity(getCurrentTestName());
            session.auth().verify(5L, TimeUnit.SECONDS);

            try (ByteArrayOutputStream out = new ByteArrayOutputStream();
                 ByteArrayOutputStream err = new ByteArrayOutputStream();
                 ClientChannel channel = session.createChannel(Channel.CHANNEL_SHELL)) {
                channel.setOut(out);
                channel.setErr(err);

                try {
                    channel.open().verify(9L, TimeUnit.SECONDS);
                    try (OutputStream pipedIn = channel.getInvertedIn()) {
                        msg += "\nexit\n";
                        pipedIn.write(msg.getBytes(StandardCharsets.UTF_8));
                        pipedIn.flush();
                    }

                    Collection<ClientChannelEvent> result =
                            channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), TimeUnit.SECONDS.toMillis(15L));
                    assertFalse("Timeout while waiting for channel closure", result.contains(ClientChannelEvent.TIMEOUT));
                } finally {
                    channel.close(false);
                }

                assertArrayEquals("Mismatched message data", msg.getBytes(StandardCharsets.UTF_8), out.toByteArray());
            }
        } finally {
            client.stop();
        }
    }
}
 

@Before
public void setUp() throws Exception {
    sshd = setupTestServer();
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.WINDOW_SIZE, 2048);
    PropertyResolverUtils.updateProperty(sshd, FactoryManager.MAX_PACKET_SIZE, 256);
    sshd.setTcpipForwardingFilter(AcceptAllForwardingFilter.INSTANCE);
    sshd.start();

    if (!requestsQ.isEmpty()) {
        requestsQ.clear();
    }

    final TcpipForwarderFactory factory = ValidateUtils.checkNotNull(sshd.getTcpipForwarderFactory(), "No TcpipForwarderFactory");
    sshd.setTcpipForwarderFactory(new TcpipForwarderFactory() {
        private final Class<?>[] interfaces = {TcpipForwarder.class};
        private final Map<String, String> method2req = new TreeMap<String, String>(String.CASE_INSENSITIVE_ORDER) {
            private static final long serialVersionUID = 1L;    // we're not serializing it...

            {
                put("localPortForwardingRequested", TcpipForwardHandler.REQUEST);
                put("localPortForwardingCancelled", CancelTcpipForwardHandler.REQUEST);
            }
        };

        @Override
        public TcpipForwarder create(ConnectionService service) {
            Thread thread = Thread.currentThread();
            ClassLoader cl = thread.getContextClassLoader();

            final TcpipForwarder forwarder = factory.create(service);
            return (TcpipForwarder) Proxy.newProxyInstance(cl, interfaces, new InvocationHandler() {
                @SuppressWarnings("synthetic-access")
                @Override
                public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                    Object result = method.invoke(forwarder, args);
                    String name = method.getName();
                    String request = method2req.get(name);
                    if (GenericUtils.length(request) > 0) {
                        if (requestsQ.offer(request)) {
                            log.info("Signal " + request);
                        } else {
                            log.error("Failed to offer request=" + request);
                        }
                    }
                    return result;
                }
            });
        }
    });
    sshPort = sshd.getPort();

    NioSocketAcceptor acceptor = new NioSocketAcceptor();
    acceptor.setHandler(new IoHandlerAdapter() {
        @Override
        public void messageReceived(IoSession session, Object message) throws Exception {
            IoBuffer recv = (IoBuffer) message;
            IoBuffer sent = IoBuffer.allocate(recv.remaining());
            sent.put(recv);
            sent.flip();
            session.write(sent);
        }
    });
    acceptor.setReuseAddress(true);
    acceptor.bind(new InetSocketAddress(0));
    echoPort = acceptor.getLocalAddress().getPort();
    this.acceptor = acceptor;
}