| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.commons.net.examples.unix; |
| |
| import java.io.IOException; |
| import org.apache.commons.net.bsd.RLoginClient; |
| |
| import org.apache.commons.net.examples.util.IOUtil; |
| |
| /*** |
| * 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. |
| * <p> |
| * 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. |
| * <p> |
| * 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 System.in. The best way to run this example |
| * is probably from a Win95 dos box into a Unix host. |
| * <p> |
| * Example: java rlogin myhost localusername remoteusername vt100 |
| * <p> |
| * Usage: rlogin <hostname> <localuser> <remoteuser> <terminal> |
| ***/ |
| |
| // This class requires the IOUtil support class! |
| public final class rlogin |
| { |
| |
| public static void main(String[] args) |
| { |
| String server, localuser, remoteuser, terminal; |
| RLoginClient client; |
| |
| if (args.length != 4) |
| { |
| System.err.println( |
| "Usage: rlogin <hostname> <localuser> <remoteuser> <terminal>"); |
| 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) |
| {/* ignored */} |
| e.printStackTrace(); |
| System.err.println("rlogin authentication failed."); |
| System.exit(1); |
| } |
| |
| |
| IOUtil.readWrite(client.getInputStream(), client.getOutputStream(), |
| System.in, System.out); |
| |
| try |
| { |
| client.disconnect(); |
| } |
| catch (IOException e) |
| { |
| e.printStackTrace(); |
| System.exit(1); |
| } |
| |
| System.exit(0); |
| } |
| |
| } |
| |