143 lines
3.4 KiB
PHP
143 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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* ISDN Resource Record - RFC1183 section 3.2
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*
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* / ISDN-address /
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* / SA /
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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*
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*/
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class Net_DNS2_RR_ISDN extends Net_DNS2_RR
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{
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/*
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* ISDN Number
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*/
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public $isdnaddress;
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/*
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* Sub-Address
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*/
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public $sa;
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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 $this->formatString($this->isdnaddress) . ' ' .
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$this->formatString($this->sa);
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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 $rdata)
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{
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$data = $this->buildString($rdata);
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if (count($data) >= 1) {
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$this->isdnaddress = $data[0];
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if (isset($data[1])) {
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$this->sa = $data[1];
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}
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return true;
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}
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return false;
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}
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/**
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* parses the rdata of the Net_DNS2_Packet object
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*
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* @param Net_DNS2_Packet &$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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$this->isdnaddress = Net_DNS2_Packet::label($packet, $packet->offset);
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//
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// look for a SA (sub address) - it's optional
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//
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if ( (strlen($this->isdnaddress) + 1) < $this->rdlength) {
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$this->sa = Net_DNS2_Packet::label($packet, $packet->offset);
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} else {
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$this->sa = '';
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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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if (strlen($this->isdnaddress) > 0) {
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$data = chr(strlen($this->isdnaddress)) . $this->isdnaddress;
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if (!empty($this->sa)) {
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$data .= chr(strlen($this->sa));
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$data .= $this->sa;
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}
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$packet->offset += strlen($data);
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return $data;
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}
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return null;
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}
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}
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