193 lines
5.2 KiB
PHP
193 lines
5.2 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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* SOA Resource Record - RFC1035 section 3.3.13
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*
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* / MNAME /
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* / /
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* / RNAME /
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* | SERIAL |
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* | |
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* | REFRESH |
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* | |
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* | RETRY |
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* | |
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* | EXPIRE |
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* | |
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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* | MINIMUM |
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* | |
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* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
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*
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*/
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class Net_DNS2_RR_SOA extends Net_DNS2_RR
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{
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/*
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* The master DNS server
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*/
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public $mname;
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/*
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* mailbox of the responsible person
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*/
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public $rname;
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/*
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* serial number
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*/
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public $serial;
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/*
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* refresh time
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*/
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public $refresh;
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/*
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* retry interval
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*/
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public $retry;
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/*
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* expire time
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*/
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public $expire;
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/*
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* minimum TTL for any RR in this zone
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*/
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public $minimum;
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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 $this->cleanString($this->mname) . '. ' .
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$this->cleanString($this->rname) . '. ' .
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$this->serial . ' ' . $this->refresh . ' ' . $this->retry . ' ' .
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$this->expire . ' ' . $this->minimum;
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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->mname = $this->cleanString($rdata[0]);
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$this->rname = $this->cleanString($rdata[1]);
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$this->serial = $rdata[2];
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$this->refresh = $rdata[3];
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$this->retry = $rdata[4];
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$this->expire = $rdata[5];
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$this->minimum = $rdata[6];
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return true;
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}
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/**
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* parses the rdata of the Net_DNS2_Packet object
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*
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* @param Net_DNS2_Packet &$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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// parse the
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//
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$offset = $packet->offset;
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$this->mname = Net_DNS2_Packet::expand($packet, $offset);
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$this->rname = Net_DNS2_Packet::expand($packet, $offset, true);
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//
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// get the SOA values
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//
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$x = unpack(
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'@' . $offset . '/Nserial/Nrefresh/Nretry/Nexpire/Nminimum/',
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$packet->rdata
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);
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$this->serial = Net_DNS2::expandUint32($x['serial']);
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$this->refresh = Net_DNS2::expandUint32($x['refresh']);
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$this->retry = Net_DNS2::expandUint32($x['retry']);
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$this->expire = Net_DNS2::expandUint32($x['expire']);
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$this->minimum = Net_DNS2::expandUint32($x['minimum']);
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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($this->mname) > 0) {
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$data = $packet->compress($this->mname, $packet->offset);
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$data .= $packet->compress($this->rname, $packet->offset);
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$data .= pack(
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'N5', $this->serial, $this->refresh, $this->retry,
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$this->expire, $this->minimum
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);
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$packet->offset += 20;
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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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