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1		/*
2		* Copyright 2001-2005 The Apache Software Foundation
3		*
4		* Licensed under the Apache License, Version 2.0 (the "License");
5		* you may not use this file except in compliance with the License.
6		* You may obtain a copy of the License at
7		*
8		* http://www.apache.org/licenses/LICENSE-2.0
9		*
10		* Unless required by applicable law or agreed to in writing, software
11		* distributed under the License is distributed on an "AS IS" BASIS,
12		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13		* See the License for the specific language governing permissions and
14		* limitations under the License.
15		*/
16		package examples;
17
18		import java.io.IOException;
19		import java.net.InetAddress;
20		import java.net.UnknownHostException;
21		import org.apache.commons.net.FingerClient;
22
23		/***
24		* This is an example of how you would implement the finger command
25		* in Java using NetComponents. The Java version is much shorter.
26		* But keep in mind that the Unix finger command reads all sorts of
27		* local files to output local finger information. This program only
28		* queries the finger daemon.
29		* <p>
30		* The -l flag is used to request long output from the server.
31		* <p>
32		***/
33	0	public final class finger
34		{
35
36		public static final void main(String[] args)
37		{
38	0	boolean longOutput = false;
39	0	int arg = 0, index;
40		String handle, host;
41		FingerClient finger;
42	0	InetAddress address = null;
43
44		// Get flags. If an invalid flag is present, exit with usage message.
45	0	while (arg < args.length && args[arg].startsWith("-"))
46		{
47	0	if (args[arg].equals("-l"))
48	0	longOutput = true;
49		else
50		{
51	0	System.err.println("usage: finger [-l] [[[handle][@<server>]] ...]");
52	0	System.exit(1);
53		}
54	0	++arg;
55		}
56
57
58	0	finger = new FingerClient();
59		// We want to timeout if a response takes longer than 60 seconds
60	0	finger.setDefaultTimeout(60000);
61
62	0	if (arg >= args.length)
63		{
64		// Finger local host
65
66		try
67		{
68	0	address = InetAddress.getLocalHost();
69		}
70	0	catch (UnknownHostException e)
71		{
72	0	System.err.println("Error unknown host: " + e.getMessage());
73	0	System.exit(1);
74	0	}
75
76		try
77		{
78	0	finger.connect(address);
79	0	System.out.print(finger.query(longOutput));
80	0	finger.disconnect();
81		}
82	0	catch (IOException e)
83		{
84	0	System.err.println("Error I/O exception: " + e.getMessage());
85	0	System.exit(1);
86	0	}
87
88	0	return ;
89		}
90
91		// Finger each argument
92	0	while (arg < args.length)
93		{
94
95	0	index = args[arg].lastIndexOf("@");
96
97	0	if (index == -1)
98		{
99	0	handle = args[arg];
100		try
101		{
102	0	address = InetAddress.getLocalHost();
103		}
104	0	catch (UnknownHostException e)
105		{
106	0	System.err.println("Error unknown host: " + e.getMessage());
107	0	System.exit(1);
108	0	}
109		}
110		else
111		{
112	0	handle = args[arg].substring(0, index);
113	0	host = args[arg].substring(index + 1);
114
115		try
116		{
117	0	address = InetAddress.getByName(host);
118		}
119	0	catch (UnknownHostException e)
120		{
121	0	System.err.println("Error unknown host: " + e.getMessage());
122	0	System.exit(1);
123	0	}
124		}
125
126	0	System.out.println("[" + address.getHostName() + "]");
127
128		try
129		{
130	0	finger.connect(address);
131	0	System.out.print(finger.query(longOutput, handle));
132	0	finger.disconnect();
133		}
134	0	catch (IOException e)
135		{
136	0	System.err.println("Error I/O exception: " + e.getMessage());
137	0	System.exit(1);
138	0	}
139
140	0	++arg;
141	0	if (arg != args.length)
142	0	System.out.print("\n");
143		}
144	0	}
145		}
146

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