1<?php 2/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ 3 4/** 5 * DNS Library for handling lookups and updates. 6 * 7 * PHP Version 5 8 * 9 * Copyright (c) 2010, Mike Pultz <mike@mikepultz.com>. 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 16 * * Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 19 * * Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in 21 * the documentation and/or other materials provided with the 22 * distribution. 23 * 24 * * Neither the name of Mike Pultz nor the names of his contributors 25 * may be used to endorse or promote products derived from this 26 * software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 31 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 32 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 33 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 34 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 35 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 36 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRIC 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 38 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 39 * POSSIBILITY OF SUCH DAMAGE. 40 * 41 * @category Networking 42 * @package Net_DNS2 43 * @author Mike Pultz <mike@mikepultz.com> 44 * @copyright 2010 Mike Pultz <mike@mikepultz.com> 45 * @license http://www.opensource.org/licenses/bsd-license.php BSD License 46 * @version SVN: $Id$ 47 * @link http://pear.php.net/package/Net_DNS2 48 * @since File available since Release 0.6.0 49 * 50 */ 51 52/** 53 * CNAME Resource Record - RFC1035 section 3.3.1 54 * 55 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 56 * / CNAME / 57 * / / 58 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 59 * 60 * @category Networking 61 * @package Net_DNS2 62 * @author Mike Pultz <mike@mikepultz.com> 63 * @license http://www.opensource.org/licenses/bsd-license.php BSD License 64 * @link http://pear.php.net/package/Net_DNS2 65 * @see Net_DNS2_RR 66 * 67 */ 68class Net_DNS2_RR_CNAME extends Net_DNS2_RR 69{ 70 /* 71 * The canonical name 72 */ 73 public $cname; 74 75 /** 76 * method to return the rdata portion of the packet as a string 77 * 78 * @return string 79 * @access protected 80 * 81 */ 82 protected function rrToString() 83 { 84 return $this->cleanString($this->cname) . '.'; 85 } 86 87 /** 88 * parses the rdata portion from a standard DNS config line 89 * 90 * @param array $rdata a string split line of values for the rdata 91 * 92 * @return boolean 93 * @access protected 94 * 95 */ 96 protected function rrFromString(array $rdata) 97 { 98 $this->cname = $this->cleanString(array_shift($rdata)); 99 return true; 100 } 101 102 /** 103 * parses the rdata of the Net_DNS2_Packet object 104 * 105 * @param Net_DNS2_Packet &$packet a Net_DNS2_Packet packet to parse the RR from 106 * 107 * @return boolean 108 * @access protected 109 * 110 */ 111 protected function rrSet(Net_DNS2_Packet &$packet) 112 { 113 if ($this->rdlength > 0) { 114 115 $offset = $packet->offset; 116 $this->cname = Net_DNS2_Packet::expand($packet, $offset); 117 118 return true; 119 } 120 121 return false; 122 } 123 124 /** 125 * returns the rdata portion of the DNS packet 126 * 127 * @param Net_DNS2_Packet &$packet a Net_DNS2_Packet packet use for 128 * compressed names 129 * 130 * @return mixed either returns a binary packed 131 * string or null on failure 132 * @access protected 133 * 134 */ 135 protected function rrGet(Net_DNS2_Packet &$packet) 136 { 137 if (strlen($this->cname) > 0) { 138 139 return $packet->compress($this->cname, $packet->offset); 140 } 141 142 return null; 143 } 144} 145 146/* 147 * Local variables: 148 * tab-width: 4 149 * c-basic-offset: 4 150 * c-hanging-comment-ender-p: nil 151 * End: 152 */ 153?> 154