136 lines
3.5 KiB
PHP
136 lines
3.5 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 1.2.0
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*
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*/
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/**
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* URI Resource Record - http://tools.ietf.org/html/draft-faltstrom-uri-06
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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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* | Priority | Weight |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* / /
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* / Target /
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* / /
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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*/
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class Net_DNS2_RR_URI extends Net_DNS2_RR
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{
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/*
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* The priority of this target host.
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*/
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public $priority;
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/*
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* a relative weight for entries with the same priority
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*/
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public $weight;
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/*
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* The domain name of the target host
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*/
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public $target;
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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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//
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// presentation format has double quotes (") around the target.
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//
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return $this->priority . ' ' . $this->weight . ' "' . $this->target . '"';
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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->priority = $rdata[0];
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$this->weight = $rdata[1];
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$this->target = trim(strtolower(trim($rdata[2])), '"');
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return true;
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}
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/**
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* parses the rdata of the Net_DNS2_Packet object
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*
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* @param Net_DNS2_Packet &$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 priority and weight
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//
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$x = unpack('npriority/nweight/a*target', $this->rdata);
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$this->priority = $x['priority'];
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$this->weight = $x['weight'];
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$this->target = $x['target'];
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return true;
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}
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return false;
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}
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/**
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* returns the rdata portion of the DNS packet
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*
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* @param Net_DNS2_Packet &$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->target) > 0) {
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$data = pack('nna*', $this->priority, $this->weight, $this->target);
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$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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