| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.net.examples.unix; |
| |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| |
| import org.apache.commons.net.finger.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. |
| ***/ |
| public final class finger |
| { |
| |
| public static 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); |
| System.out.println("[" + address.getHostName() + "]"); |
| } |
| catch (UnknownHostException e) |
| { |
| System.err.println("Error unknown host: " + e.getMessage()); |
| System.exit(1); |
| } |
| } |
| |
| 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"); |
| } |
| } |
| } |
| } |
| |