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    package org.apache.james.jspf.core;
021    
022    import org.apache.james.jspf.core.exceptions.NoneException;
023    import org.xbill.DNS.Name;
024    import org.xbill.DNS.TextParseException;
025    
026    /**
027     * Represent a DNSRequest
028     */
029    public final class DNSRequest {
030    
031        /** The record types for the lookups */
032        public static final int A = 1;
033        public static final int AAAA = 2;
034        public static final int MX = 3;
035        public static final int PTR = 4;
036        public static final int TXT = 5;
037        public static final int SPF = 6;
038    
039        /**
040         * The hostname to be resolved
041         */
042        private final String hostname;
043        
044        /**
045         * The record type to look for
046         */
047        private final int recordType;
048    
049        public DNSRequest(final String hostname, final int recordType) throws NoneException {
050            if (recordType == MX || recordType == A || recordType == AAAA) {
051                try {
052                    Name.fromString(hostname);
053                } catch (TextParseException e) {
054                    throw new NoneException(e.getMessage());
055                }
056            }
057            this.hostname = hostname;
058            this.recordType = recordType;
059        }
060    
061        /**
062         * Return the hostname to process the request for
063         * 
064         * @return the hostname
065         */
066        public final String getHostname() {
067            return hostname;
068        }
069    
070        /**
071         * Return the RecordType which is use for this request
072         * 
073         * @return the RecordType
074         */
075        public final int getRecordType() {
076            return recordType;
077        }
078    
079        /**
080         * @see java.lang.Object#toString()
081         */
082        public String toString() {
083            return getHostname()+"#"+getRecordType();
084        }
085    }