001    /****************************************************************
002     * Licensed to the Apache Software Foundation (ASF) under one   *
003     * or more contributor license agreements.  See the NOTICE file *
004     * distributed with this work for additional information        *
005     * regarding copyright ownership.  The ASF licenses this file   *
006     * to you under the Apache License, Version 2.0 (the            *
007     * "License"); you may not use this file except in compliance   *
008     * with the License.  You may obtain a copy of the License at   *
009     *                                                              *
010     *   http://www.apache.org/licenses/LICENSE-2.0                 *
011     *                                                              *
012     * Unless required by applicable law or agreed to in writing,   *
013     * software distributed under the License is distributed on an  *
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
015     * KIND, either express or implied.  See the License for the    *
016     * specific language governing permissions and limitations      *
017     * under the License.                                           *
018     ****************************************************************/
019    
020    
021    package org.apache.james.jspf.terms;
022    
023    import org.apache.james.jspf.core.Inet6Util;
024    
025    /**
026     * This class represent the ip6 mechanism
027     * 
028     */
029    public class IP6Mechanism extends IP4Mechanism {
030    
031        /**
032         * ABNF: IP6 = "ip6" ":" ip6-network [ ip6-cidr-length ]
033         */
034        public static final String REGEX = "[iI][pP][6]"
035                + "\\:([0-9A-Fa-f\\:\\.]+)" + "(?:" + IP6_CIDR_LENGTH_REGEX + ")?";
036    
037        /**
038         * @see org.apache.james.jspf.terms.IP4Mechanism#isValidAddress(String)
039         */
040        protected boolean isValidAddress(String ipString) {
041            return Inet6Util.isValidIP6Address(ipString);
042        }
043    
044        /**
045         * @see org.apache.james.jspf.terms.IP4Mechanism#getMaxCidr()
046         */
047        protected int getMaxCidr() {
048            return 128;
049        }
050        
051    
052        /**
053         * @see java.lang.Object#toString()
054         */
055        public String toString() {
056            if (getIp().getMaskLength() == getMaxCidr()) {
057                return "ip6:"+getIp().getIPAddress();
058            } else {
059                return "ip6:"+getIp().getIPAddress()+"/"+getIp().getMaskLength();
060            }
061        }
062    
063    }