/*
* Copyright 2010, 2011 sshj contributors
*
* Licensed 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 examples;
import net.schmizz.sshj.SSHClient;
import net.schmizz.sshj.common.StreamCopier;
import net.schmizz.sshj.connection.channel.direct.Session;
import net.schmizz.sshj.connection.channel.direct.Session.Command;
import net.schmizz.sshj.connection.channel.forwarded.SocketForwardingConnectListener;
import java.io.IOException;
import java.net.InetSocketAddress;
/** This example demonstrates how forwarding X11 connections from a remote host can be accomplished. */
public class X11 {
public static void main(String... args)
throws IOException, InterruptedException {
final SSHClient ssh = new SSHClient();
// Compression makes X11 more feasible over slower connections
// ssh.useCompression();
ssh.loadKnownHosts();
/*
* NOTE: Forwarding incoming X connections to localhost:6000 only works if X is started without the
* "-nolisten tcp" option (this is usually not the default for good reason)
*/
ssh.registerX11Forwarder(new SocketForwardingConnectListener(new InetSocketAddress("localhost", 6000)));
ssh.connect("localhost");
try {
ssh.authPublickey(System.getProperty("user.name"));
Session sess = ssh.startSession();
/*
* It is recommendable to send a fake cookie, and in your ConnectListener when a connection comes in replace
* it with the real one. But here simply one from `xauth list` is being used.
*/
sess.reqX11Forwarding("MIT-MAGIC-COOKIE-1", "b0956167c9ad8f34c8a2788878307dc9", 0);
final Command cmd = sess.exec("/usr/X11/bin/xcalc");
new StreamCopier(cmd.getInputStream(), System.out).spawn("stdout");
new StreamCopier(cmd.getErrorStream(), System.err).spawn("stderr");
// Wait for session & X11 channel to get closed
ssh.getConnection().join();
} finally {
ssh.disconnect();
}
}
}