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examples.rlogin |
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1 | /* |
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2 | * Copyright 2001-2005 The Apache Software Foundation |
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3 | * |
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4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 | * you may not use this file except in compliance with the License. |
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6 | * You may obtain a copy of the License at |
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7 | * |
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8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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9 | * |
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10 | * Unless required by applicable law or agreed to in writing, software |
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11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | * See the License for the specific language governing permissions and |
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14 | * limitations under the License. |
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15 | */ |
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16 | package examples; |
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17 | ||
18 | import java.io.IOException; |
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19 | import org.apache.commons.net.bsd.RLoginClient; |
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20 | ||
21 | /*** |
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22 | * This is an example program demonstrating how to use the RLoginClient |
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23 | * class. This program connects to an rlogin daemon and begins to |
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24 | * interactively read input from stdin (this will be line buffered on most |
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25 | * systems, so don't expect character at a time interactivity), passing it |
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26 | * to the remote login process and writing the remote stdout and stderr |
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27 | * to local stdout. If you don't have .rhosts or hosts.equiv files set up, |
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28 | * the rlogin daemon will prompt you for a password. |
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29 | * <p> |
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30 | * On Unix systems you will not be able to use the rshell capability |
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31 | * unless the process runs as root since only root can bind port addresses |
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32 | * lower than 1024. |
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33 | * <p> |
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34 | * JVM's using green threads will likely have problems if the rlogin daemon |
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35 | * requests a password. This program is merely a demonstration and is |
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36 | * not suitable for use as an application, especially given that it relies |
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37 | * on line buffered input from System.in. The best way to run this example |
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38 | * is probably from a Win95 dos box into a Unix host. |
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39 | * <p> |
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40 | * Example: java rlogin myhost localusername remoteusername vt100 |
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41 | * <p> |
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42 | * Usage: rlogin <hostname> <localuser> <remoteuser> <terminal> |
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43 | * <p> |
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44 | ***/ |
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45 | ||
46 | // This class requires the IOUtil support class! |
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47 | 0 | public final class rlogin |
48 | { |
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49 | ||
50 | public static final void main(String[] args) |
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51 | { |
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52 | String server, localuser, remoteuser, terminal; |
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53 | RLoginClient client; |
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54 | ||
55 | 0 | if (args.length != 4) |
56 | { |
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57 | 0 | System.err.println( |
58 | "Usage: rlogin <hostname> <localuser> <remoteuser> <terminal>"); |
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59 | 0 | System.exit(1); |
60 | 0 | return ; // so compiler can do proper flow control analysis |
61 | } |
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62 | ||
63 | 0 | client = new RLoginClient(); |
64 | ||
65 | 0 | server = args[0]; |
66 | 0 | localuser = args[1]; |
67 | 0 | remoteuser = args[2]; |
68 | 0 | terminal = args[3]; |
69 | ||
70 | try |
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71 | { |
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72 | 0 | client.connect(server); |
73 | } |
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74 | 0 | catch (IOException e) |
75 | { |
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76 | 0 | System.err.println("Could not connect to server."); |
77 | 0 | e.printStackTrace(); |
78 | 0 | System.exit(1); |
79 | 0 | } |
80 | ||
81 | try |
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82 | { |
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83 | 0 | client.rlogin(localuser, remoteuser, terminal); |
84 | } |
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85 | 0 | catch (IOException e) |
86 | { |
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87 | try |
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88 | { |
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89 | 0 | client.disconnect(); |
90 | } |
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91 | 0 | catch (IOException f) |
92 | 0 | {} |
93 | 0 | e.printStackTrace(); |
94 | 0 | System.err.println("rlogin authentication failed."); |
95 | 0 | System.exit(1); |
96 | 0 | } |
97 | ||
98 | ||
99 | 0 | IOUtil.readWrite(client.getInputStream(), client.getOutputStream(), |
100 | System.in, System.out); |
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101 | ||
102 | try |
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103 | { |
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104 | 0 | client.disconnect(); |
105 | } |
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106 | 0 | catch (IOException e) |
107 | { |
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108 | 0 | e.printStackTrace(); |
109 | 0 | System.exit(1); |
110 | 0 | } |
111 | ||
112 | 0 | System.exit(0); |
113 | 0 | } |
114 | ||
115 | } |
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116 |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |