1 files changed, 72 insertions, 0 deletions
diff --git a/src/org/apache/http/conn/util/InetAddressUtils.java b/src/org/apache/http/conn/util/InetAddressUtils.java
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+++ b/src/org/apache/http/conn/util/InetAddressUtils.java
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+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/util/InetAddressUtils.java $
+ * $Revision: 652020 $
+ * $Date: 2008-04-27 14:23:31 -0700 (Sun, 27 Apr 2008) $
+ * 
+ * ====================================================================
+ * 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.
+ * ====================================================================
+ *
+ * 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/>.
+ *
+ */
+
+package org.apache.http.conn.util;
+
+import java.util.regex.Pattern;
+
+/**
+ * A collection of utilities relating to InetAddresses.
+ */
+public class InetAddressUtils {
+
+    private InetAddressUtils() {
+    }
+    
+    private static final Pattern IPV4_PATTERN = 
+        Pattern.compile(
+                "^(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}$");
+
+    private static final Pattern IPV6_STD_PATTERN = 
+        Pattern.compile(
+                "^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$");
+
+    private static final Pattern IPV6_HEX_COMPRESSED_PATTERN = 
+        Pattern.compile(
+                "^((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)$");
+
+    public static boolean isIPv4Address(final String input) {
+        return IPV4_PATTERN.matcher(input).matches();
+    }
+
+    public static boolean isIPv6StdAddress(final String input) {
+        return IPV6_STD_PATTERN.matcher(input).matches();
+    }
+    
+    public static boolean isIPv6HexCompressedAddress(final String input) {
+        return IPV6_HEX_COMPRESSED_PATTERN.matcher(input).matches();
+    }
+    
+    public static boolean isIPv6Address(final String input) {
+        return isIPv6StdAddress(input) || isIPv6HexCompressedAddress(input); 
+    }
+
+}