130 lines
3.4 KiB
PHP
130 lines
3.4 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 0.6.0
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*
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*/
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/**
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* A Resource Record - RFC1035 section 3.4.1
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*
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* | |
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* | |
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* | |
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* | ADDRESS |
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* | |
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* | (128 bit) |
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* | |
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* | |
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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*
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*/
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class Net_DNS2_RR_AAAA extends Net_DNS2_RR
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{
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/*
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* the IPv6 address in the preferred hexadecimal values of the eight
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* 16-bit pieces
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* per RFC1884
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*
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*/
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public $address;
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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->address;
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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 $rdata)
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{
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//
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// expand out compressed formats
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//
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$value = array_shift($rdata);
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if (Net_DNS2::isIPv6($value) == true) {
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$this->address = $value;
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return true;
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}
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return false;
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}
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/**
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* parses the rdata of the Net_DNS2_Packet object
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*
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* @param Net_DNS2_Packet &$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 &$packet)
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{
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//
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// must be 8 x 16bit chunks, or 16 x 8bit
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//
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if ($this->rdlength == 16) {
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//
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// PHP's inet_ntop returns IPv6 addresses in their compressed form,
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// but we want to keep with the preferred standard, so we'll parse
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// it manually.
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//
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$x = unpack('n8', $this->rdata);
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if (count($x) == 8) {
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$this->address = vsprintf('%x:%x:%x:%x:%x:%x:%x:%x', $x);
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return true;
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}
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}
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return false;
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}
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/**
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* returns the rdata portion of the DNS packet
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*
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* @param Net_DNS2_Packet &$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 &$packet)
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{
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$packet->offset += 16;
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return inet_pton($this->address);
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}
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}
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