| /* |
| * 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; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /*** |
| * The WhoisClient class implements the client side of the Internet Whois |
| * Protocol defined in RFC 954. To query a host you create a |
| * WhoisClient instance, connect to the host, query the host, and finally |
| * disconnect from the host. If the whois service you want to query is on |
| * a non-standard port, connect to the host at that port. |
| * Here's a sample use: |
| * <pre> |
| * WhoisClient whois; |
| * |
| * whois = new WhoisClient(); |
| * |
| * try { |
| * whois.connect(WhoisClient.DEFAULT_HOST); |
| * System.out.println(whois.query("foobar")); |
| * whois.disconnect(); |
| * } catch(IOException e) { |
| * System.err.println("Error I/O exception: " + e.getMessage()); |
| * return; |
| * } |
| * </pre> |
| * |
| * <p> |
| * <p> |
| * @author Daniel F. Savarese |
| ***/ |
| |
| public final class WhoisClient extends FingerClient |
| { |
| /*** |
| * The default whois host to query. It is set to whois.internic.net. |
| ***/ |
| public static final String DEFAULT_HOST = "whois.internic.net"; |
| |
| /*** |
| * The default whois port. It is set to 43 according to RFC 954. |
| ***/ |
| public static final int DEFAULT_PORT = 43; |
| |
| |
| /*** |
| * The default whois constructor. Initializes the |
| * default port to <code> DEFAULT_PORT </code>. |
| ***/ |
| public WhoisClient() |
| { |
| setDefaultPort(DEFAULT_PORT); |
| } |
| |
| /*** |
| * Queries the connected whois server for information regarding |
| * the given handle. It is up to the programmer to be familiar with the |
| * handle syntax of the whois server. You must first connect to a whois |
| * server before calling this method, and you should disconnect afterward. |
| * <p> |
| * @param handle The handle to lookup. |
| * @return The result of the whois query. |
| * @exception IOException If an I/O error occurs during the operation. |
| ***/ |
| public String query(String handle) throws IOException |
| { |
| return query(false, handle); |
| } |
| |
| |
| /*** |
| * Queries the connected whois server for information regarding |
| * the given handle and returns the InputStream of the network connection. |
| * It is up to the programmer to be familiar with the handle syntax |
| * of the whois server. You must first connect to a finger server before |
| * calling this method, and you should disconnect after finishing reading |
| * the stream. |
| * <p> |
| * @param handle The handle to lookup. |
| * @return The InputStream of the network connection of the whois query. |
| * Can be read to obtain whois results. |
| * @exception IOException If an I/O error occurs during the operation. |
| ***/ |
| public InputStream getInputStream(String handle) throws IOException |
| { |
| return getInputStream(false, handle); |
| } |
| |
| } |
| |