| /* |
| * 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.whois.WhoisClient; |
| |
| /*** |
| * This is an example of how you would implement the Linux fwhois command |
| * in Java using NetComponents. The Java version is much shorter. |
| ***/ |
| public final class fwhois |
| { |
| |
| public static void main(String[] args) |
| { |
| int index; |
| String handle, host; |
| InetAddress address = null; |
| WhoisClient whois; |
| |
| if (args.length != 1) |
| { |
| System.err.println("usage: fwhois handle[@<server>]"); |
| System.exit(1); |
| } |
| |
| index = args[0].lastIndexOf('@'); |
| |
| whois = new WhoisClient(); |
| // We want to timeout if a response takes longer than 60 seconds |
| whois.setDefaultTimeout(60000); |
| |
| if (index == -1) |
| { |
| handle = args[0]; |
| host = WhoisClient.DEFAULT_HOST; |
| } |
| else |
| { |
| handle = args[0].substring(0, index); |
| host = args[0].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 |
| { |
| whois.connect(address); |
| System.out.print(whois.query(handle)); |
| whois.disconnect(); |
| } |
| catch (IOException e) |
| { |
| System.err.println("Error I/O exception: " + e.getMessage()); |
| System.exit(1); |
| } |
| } |
| |
| } |