package examples;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache Commons" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.apache.commons.net.FingerClient;
/***
* This is an example of how you would implement the finger command
* in Java using NetComponents. The Java version is much shorter.
* But keep in mind that the Unix finger command reads all sorts of
* local files to output local finger information. This program only
* queries the finger daemon.
* <p>
* The -l flag is used to request long output from the server.
* <p>
***/
public final class finger
{
public static final void main(String[] args)
{
boolean longOutput = false;
int arg = 0, index;
String handle, host;
FingerClient finger;
InetAddress address = null;
// Get flags. If an invalid flag is present, exit with usage message.
while (arg < args.length && args[arg].startsWith("-"))
{
if (args[arg].equals("-l"))
longOutput = true;
else
{
System.err.println("usage: finger [-l] [[[handle][@<server>]] ...]");
System.exit(1);
}
++arg;
}
finger = new FingerClient();
// We want to timeout if a response takes longer than 60 seconds
finger.setDefaultTimeout(60000);
if (arg >= args.length)
{
// Finger local host
try
{
address = InetAddress.getLocalHost();
}
catch (UnknownHostException e)
{
System.err.println("Error unknown host: " + e.getMessage());
System.exit(1);
}
try
{
finger.connect(address);
System.out.print(finger.query(longOutput));
finger.disconnect();
}
catch (IOException e)
{
System.err.println("Error I/O exception: " + e.getMessage());
System.exit(1);
}
return ;
}
// Finger each argument
while (arg < args.length)
{
index = args[arg].lastIndexOf("@");
if (index == -1)
{
handle = args[arg];
try
{
address = InetAddress.getLocalHost();
}
catch (UnknownHostException e)
{
System.err.println("Error unknown host: " + e.getMessage());
System.exit(1);
}
}
else
{
handle = args[arg].substring(0, index);
host = args[arg].substring(index + 1);
try
{
address = InetAddress.getByName(host);
}
catch (UnknownHostException e)
{
System.err.println("Error unknown host: " + e.getMessage());
System.exit(1);
}
}
System.out.println("[" + address.getHostName() + "]");
try
{
finger.connect(address);
System.out.print(finger.query(longOutput, handle));
finger.disconnect();
}
catch (IOException e)
{
System.err.println("Error I/O exception: " + e.getMessage());
System.exit(1);
}
++arg;
if (arg != args.length)
System.out.print("\n");
}
}
}