1 package examples;
2
3 /* ====================================================================
4 * The Apache Software License, Version 1.1
5 *
6 * Copyright (c) 2001 The Apache Software Foundation. All rights
7 * reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. The end-user documentation included with the redistribution,
22 * if any, must include the following acknowledgment:
23 * "This product includes software developed by the
24 * Apache Software Foundation (http://www.apache.org/)."
25 * Alternately, this acknowledgment may appear in the software itself,
26 * if and wherever such third-party acknowledgments normally appear.
27 *
28 * 4. The names "Apache" and "Apache Software Foundation" and
29 * "Apache Commons" must not be used to endorse or promote products
30 * derived from this software without prior written permission. For
31 * written permission, please contact apache@apache.org.
32 *
33 * 5. Products derived from this software may not be called "Apache",
34 * nor may "Apache" appear in their name, without
35 * prior written permission of the Apache Software Foundation.
36 *
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48 * SUCH DAMAGE.
49 * ====================================================================
50 *
51 * This software consists of voluntary contributions made by many
52 * individuals on behalf of the Apache Software Foundation. For more
53 * information on the Apache Software Foundation, please see
54 * <http://www.apache.org/>.
55 */
56
57 import java.io.IOException;
58 import java.net.InetAddress;
59 import java.net.UnknownHostException;
60 import org.apache.commons.net.WhoisClient;
61
62 /****
63 * This is an example of how you would implement the Linux fwhois command
64 * in Java using NetComponents. The Java version is much shorter.
65 * <p>
66 ***/
67 public final class fwhois
68 {
69
70 public static final void main(String[] args)
71 {
72 int index;
73 String handle, host;
74 InetAddress address = null;
75 WhoisClient whois;
76
77 if (args.length != 1)
78 {
79 System.err.println("usage: fwhois handle[@<server>]");
80 System.exit(1);
81 }
82
83 index = args[0].lastIndexOf("@");
84
85 whois = new WhoisClient();
86 // We want to timeout if a response takes longer than 60 seconds
87 whois.setDefaultTimeout(60000);
88
89 if (index == -1)
90 {
91 handle = args[0];
92 host = WhoisClient.DEFAULT_HOST;
93 }
94 else
95 {
96 handle = args[0].substring(0, index);
97 host = args[0].substring(index + 1);
98 }
99
100 try
101 {
102 address = InetAddress.getByName(host);
103 }
104 catch (UnknownHostException e)
105 {
106 System.err.println("Error unknown host: " + e.getMessage());
107 System.exit(1);
108 }
109
110 System.out.println("[" + address.getHostName() + "]");
111
112 try
113 {
114 whois.connect(address);
115 System.out.print(whois.query(handle));
116 whois.disconnect();
117 }
118 catch (IOException e)
119 {
120 System.err.println("Error I/O exception: " + e.getMessage());
121 System.exit(1);
122 }
123 }
124
125 }
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