| package examples; |
| |
| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001-2004 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 |
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| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| * 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"); |
| } |
| } |
| } |
| |