130 lines
2.9 KiB
PHP
130 lines
2.9 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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* TXT Resource Record - RFC1035 section 3.3.14
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*
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* / TXT-DATA /
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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*
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*/
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class Net_DNS2_RR_TXT extends Net_DNS2_RR
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{
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/*
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* an array of the text strings
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*/
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public $text = [];
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/**
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* method to return the rdata portion of the packet as a string
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*
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* @return string
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* @access protected
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*
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*/
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protected function rrToString()
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{
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if (count($this->text) == 0) {
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return '""';
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}
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$data = '';
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foreach ($this->text as $t) {
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$data .= $this->formatString($t) . ' ';
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}
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return trim($data);
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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($data) > 0) {
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$this->text = $data;
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}
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return true;
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}
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/**
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* parses the rdata of the Net_DNS2_Packet object
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*
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* @param Net_DNS2_Packet &$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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$length = $packet->offset + $this->rdlength;
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$offset = $packet->offset;
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while ($length > $offset) {
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$this->text[] = Net_DNS2_Packet::label($packet, $offset);
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}
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return true;
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}
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return false;
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}
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/**
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* returns the rdata portion of the DNS packet
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*
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* @param Net_DNS2_Packet &$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 = null;
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foreach ($this->text as $t) {
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$data .= chr(strlen($t)) . $t;
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}
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$packet->offset += strlen($data);
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return $data;
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}
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}
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