133 lines
3.2 KiB
PHP
133 lines
3.2 KiB
PHP
<?php
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/**
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* DNS Library for handling lookups and updates.
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*
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* Copyright (c) 2020, Mike Pultz <mike@mikepultz.com>. All rights reserved.
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*
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* See LICENSE for more details.
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*
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* @category Networking
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* @package Net_DNS2
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* @author Mike Pultz <mike@mikepultz.com>
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* @copyright 2020 Mike Pultz <mike@mikepultz.com>
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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* @link https://netdns2.com/
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* @since File available since Release 1.3.1
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*
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*/
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/**
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* L32 Resource Record - RFC6742 section 2.2
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*
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Preference | Locator32 (16 MSBs) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Locator32 (16 LSBs) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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*/
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class Net_DNS2_RR_L32 extends Net_DNS2_RR
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{
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/*
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* The preference
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*/
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public $preference;
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/*
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* The locator32 field
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*/
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public $locator32;
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/**
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* method to return the rdata portion of the packet as a string
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*
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* @return string
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* @access protected
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*
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*/
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protected function rrToString()
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{
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return $this->preference . ' ' . $this->locator32;
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}
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/**
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* parses the rdata portion from a standard DNS config line
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*
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* @param array $rdata a string split line of values for the rdata
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*
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* @return boolean
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* @access protected
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*
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*/
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protected function rrFromString(array $rdata)
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{
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$this->preference = array_shift($rdata);
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$this->locator32 = array_shift($rdata);
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return true;
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}
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/**
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* parses the rdata of the Net_DNS2_Packet object
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*
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* @param Net_DNS2_Packet &$packet a Net_DNS2_Packet packet to parse the RR from
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*
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* @return boolean
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* @access protected
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*
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*/
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protected function rrSet(Net_DNS2_Packet &$packet)
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{
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if ($this->rdlength > 0) {
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//
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// unpack the values
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//
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$x = unpack('npreference/C4locator', $this->rdata);
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$this->preference = $x['preference'];
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//
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// build the locator value
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//
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$this->locator32 = $x['locator1'] . '.' . $x['locator2'] . '.' .
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$x['locator3'] . '.' . $x['locator4'];
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return true;
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}
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return false;
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}
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/**
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* returns the rdata portion of the DNS packet
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*
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* @param Net_DNS2_Packet &$packet a Net_DNS2_Packet packet use for
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* compressed names
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*
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* @return mixed either returns a binary packed
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* string or null on failure
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* @access protected
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*
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*/
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protected function rrGet(Net_DNS2_Packet &$packet)
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{
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if (strlen($this->locator32) > 0) {
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//
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// break out the locator value
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//
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$n = explode('.', $this->locator32);
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//
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// pack the data
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//
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return pack('nC4', $this->preference, $n[0], $n[1], $n[2], $n[3]);
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}
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return null;
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}
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}
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