163 lines
3.7 KiB
PHP
163 lines
3.7 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 1.1.0
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*
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*/
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/**
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* ATMA Resource Record
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*
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* | FORMAT | |
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* | +--+--+--+--+--+--+--+--+
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* / ADDRESS /
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* | |
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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*
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*/
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class Net_DNS2_RR_ATMA extends Net_DNS2_RR
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{
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/*
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* One octet that indicates the format of ADDRESS. The two possible values
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* for FORMAT are value 0 indicating ATM End System Address (AESA) format
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* and value 1 indicating E.164 format
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*/
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public $format;
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/*
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* The IPv4 address in quad-dotted notation
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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 $rdata)
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{
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$value = array_shift($rdata);
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if (ctype_xdigit($value) == true) {
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$this->format = 0;
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$this->address = $value;
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} else if (is_numeric($value) == true) {
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$this->format = 1;
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$this->address = $value;
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} else {
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return false;
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}
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return true;
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}
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/**
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* parses the rdata of the Net_DNS2_Packet object
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*
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* @param Net_DNS2_Packet &$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 format
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//
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$x = unpack('Cformat/N*address', $this->rdata);
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$this->format = $x['format'];
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if ($this->format == 0) {
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$a = unpack('@1/H*address', $this->rdata);
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$this->address = $a['address'];
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} else if ($this->format == 1) {
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$this->address = substr($this->rdata, 1, $this->rdlength - 1);
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} else {
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return false;
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}
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return true;
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}
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return false;
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}
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/**
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* returns the rdata portion of the DNS packet
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*
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* @param Net_DNS2_Packet &$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 &$packet)
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{
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$data = chr($this->format);
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if ($this->format == 0) {
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$data .= pack('H*', $this->address);
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} else if ($this->format == 1) {
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$data .= $this->address;
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} else {
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return null;
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}
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$packet->offset += strlen($data);
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return $data;
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}
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}
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