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 021package org.apache.directory.server.dns.io.encoder; 022 023 024import org.apache.directory.server.dns.messages.ResourceRecord; 025import org.apache.directory.server.dns.store.DnsAttribute; 026import org.apache.mina.core.buffer.IoBuffer; 027 028 029/** 030 * 3.3.9. MX RDATA format 031 * 032 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 033 * | PREFERENCE | 034 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 035 * / EXCHANGE / 036 * / / 037 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 038 * 039 * where: 040 * 041 * PREFERENCE A 16 bit integer which specifies the preference given to 042 * this RR among others at the same owner. Lower values 043 * are preferred. 044 * 045 * EXCHANGE A <domain-name> which specifies a host willing to act as 046 * a mail exchange for the owner name. 047 * 048 * MX records cause type A additional section processing for the host 049 * specified by EXCHANGE. The use of MX RRs is explained in detail in 050 * [RFC-974]. 051 * 052 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 053 */ 054public class MailExchangeRecordEncoder extends ResourceRecordEncoder 055{ 056 protected void putResourceRecordData( IoBuffer byteBuffer, ResourceRecord record ) 057 { 058 byteBuffer.putShort( Short.parseShort( record.get( DnsAttribute.MX_PREFERENCE ) ) ); 059 putDomainName( byteBuffer, record.get( DnsAttribute.DOMAIN_NAME ) ); 060 } 061}