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.core;
022    
023    import org.apache.james.jspf.core.exceptions.SPFErrorConstants;
024    
025    
026    /**
027     * 
028     * Class that offer static methods to convert SPF Results and contains all
029     * possible results as static Strings.
030     *
031     */
032    
033    public class SPF1Utils {
034    
035        public static final String DEFAULT_EXPLANATION = "http://www.openspf.org/why.html?sender=%{S}&ip=%{I}";
036        public static final String BEST_GUESS_RECORD = "v=spf1 a/24 mx/24 ptr ?all";
037        public static final String ATTRIBUTE_SPF1_RECORD = "SPF.SPF1Record";
038    
039        /**
040         * Convert raw SPF results to SPF names
041         * 
042         * @param result The result which should converted
043         * @return coverted result
044         */
045        public static String resultToName(String result) {
046    
047            if (result.equals(SPF1Constants.PASS)) {
048                return SPFErrorConstants.PASS_CONV;
049            } else if (result.equals(SPF1Constants.FAIL)) {
050                return SPFErrorConstants.FAIL_CONV;
051            } else if (result.equals(SPF1Constants.NEUTRAL)) {
052                return SPFErrorConstants.NEUTRAL_CONV;
053            } else if (result.equals(SPF1Constants.SOFTFAIL)) {
054                return SPFErrorConstants.SOFTFAIL_CONV;
055            } else {
056                return SPFErrorConstants.NEUTRAL_CONV;
057            }
058    
059        }
060    
061        /**
062         * Check for valid FQDN
063         * 
064         * @param host The hostname to check
065         * @return false or true
066         */
067        public static boolean checkFQDN(String host) {
068            String regex = "(([a-zA-Z0-9\\-])+\\.)+([a-zA-Z]+)$";
069            if (host.matches(regex)) {
070                return true;
071            } else {
072                return false;
073            }
074        }
075    }