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What this is

This file is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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The source code

 * Copyright 2001-2004 The Apache Software Foundation
 * 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package examples;


 * This is an example program demonstrating how to use the RLoginClient
 * class. This program connects to an rlogin daemon and begins to
 * interactively read input from stdin (this will be line buffered on most
 * systems, so don't expect character at a time interactivity), passing it
 * to the remote login process and writing the remote stdout and stderr
 * to local stdout.  If you don't have .rhosts or hosts.equiv files set up,
 * the rlogin daemon will prompt you for a password.

* On Unix systems you will not be able to use the rshell capability * unless the process runs as root since only root can bind port addresses * lower than 1024. *

* JVM's using green threads will likely have problems if the rlogin daemon * requests a password. This program is merely a demonstration and is * not suitable for use as an application, especially given that it relies * on line buffered input from The best way to run this example * is probably from a Win95 dos box into a Unix host. *

* Example: java rlogin myhost localusername remoteusername vt100 *

* Usage: rlogin *

***/ // This class requires the IOUtil support class! public final class rlogin { public static final void main(String[] args) { String server, localuser, remoteuser, terminal; RLoginClient client; if (args.length != 4) { System.err.println( "Usage: rlogin "); System.exit(1); return ; // so compiler can do proper flow control analysis } client = new RLoginClient(); server = args[0]; localuser = args[1]; remoteuser = args[2]; terminal = args[3]; try { client.connect(server); } catch (IOException e) { System.err.println("Could not connect to server."); e.printStackTrace(); System.exit(1); } try { client.rlogin(localuser, remoteuser, terminal); } catch (IOException e) { try { client.disconnect(); } catch (IOException f) {} e.printStackTrace(); System.err.println("rlogin authentication failed."); System.exit(1); } IOUtil.readWrite(client.getInputStream(), client.getOutputStream(),, System.out); try { client.disconnect(); } catch (IOException e) { e.printStackTrace(); System.exit(1); } System.exit(0); } }

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