1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/util/InetAddressUtils.java $ 3 * $Revision: 652020 $ 4 * $Date: 2008-04-27 14:23:31 -0700 (Sun, 27 Apr 2008) $ 5 * 6 * ==================================================================== 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * distributed with this work for additional information 10 * regarding copyright ownership. The ASF licenses this file 11 * to you under the Apache License, Version 2.0 (the 12 * "License"); you may not use this file except in compliance 13 * with the License. You may obtain a copy of the License at 14 * 15 * http://www.apache.org/licenses/LICENSE-2.0 16 * 17 * Unless required by applicable law or agreed to in writing, 18 * software distributed under the License is distributed on an 19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20 * KIND, either express or implied. See the License for the 21 * specific language governing permissions and limitations 22 * under the License. 23 * ==================================================================== 24 * 25 * This software consists of voluntary contributions made by many 26 * individuals on behalf of the Apache Software Foundation. For more 27 * information on the Apache Software Foundation, please see 28 * <http://www.apache.org/>. 29 * 30 */ 31 32 package org.apache.http.conn.util; 33 34 import java.util.regex.Pattern; 35 36 /** 37 * A collection of utilities relating to InetAddresses. 38 */ 39 public class InetAddressUtils { 40 InetAddressUtils()41 private InetAddressUtils() { 42 } 43 44 private static final Pattern IPV4_PATTERN = 45 Pattern.compile( 46 "^(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}$"); 47 48 private static final Pattern IPV6_STD_PATTERN = 49 Pattern.compile( 50 "^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$"); 51 52 private static final Pattern IPV6_HEX_COMPRESSED_PATTERN = 53 Pattern.compile( 54 "^((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)$"); 55 isIPv4Address(final String input)56 public static boolean isIPv4Address(final String input) { 57 return IPV4_PATTERN.matcher(input).matches(); 58 } 59 isIPv6StdAddress(final String input)60 public static boolean isIPv6StdAddress(final String input) { 61 return IPV6_STD_PATTERN.matcher(input).matches(); 62 } 63 isIPv6HexCompressedAddress(final String input)64 public static boolean isIPv6HexCompressedAddress(final String input) { 65 return IPV6_HEX_COMPRESSED_PATTERN.matcher(input).matches(); 66 } 67 isIPv6Address(final String input)68 public static boolean isIPv6Address(final String input) { 69 return isIPv6StdAddress(input) || isIPv6HexCompressedAddress(input); 70 } 71 72 } 73