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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* DNS Library for handling lookups and updates.
*
* PHP Version 5
*
* Copyright (c) 2010, Mike Pultz <mike@mikepultz.com>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Mike Pultz nor the names of his contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRIC
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @category Networking
* @package Net_DNS2
* @author Mike Pultz <mike@mikepultz.com>
* @copyright 2010 Mike Pultz <mike@mikepultz.com>
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version SVN: $Id: NAPTR.php 127 2011-12-03 03:29:39Z mike.pultz $
* @link http://pear.php.net/package/Net_DNS2
* @since File available since Release 0.6.0
*
*/
/**
* NAPTR Resource Record - RFC2915
*
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* | ORDER |
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* | PREFERENCE |
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* / FLAGS /
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* / SERVICES /
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* / REGEXP /
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* / REPLACEMENT /
* / /
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
*
* @category Networking
* @package Net_DNS2
* @author Mike Pultz <mike@mikepultz.com>
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @link http://pear.php.net/package/Net_DNS2
* @see Net_DNS2_RR
*
*/
class Net_DNS2_RR_NAPTR extends Net_DNS2_RR
{
/*
* the order in which the NAPTR records MUST be processed
*/
public $order;
/*
* specifies the order in which NAPTR records with equal "order"
* values SHOULD be processed
*/
public $preference;
/*
* rewrite flags
*/
public $flags;
/*
* Specifies the service(s) available down this rewrite path
*/
public $services;
/*
* regular expression
*/
public $regexp;
/*
* The next NAME to query for NAPTR, SRV, or address records
* depending on the value of the flags field
*/
public $replacement;
/**
* method to return the rdata portion of the packet as a string
*
* @return string
* @access protected
*
*/
protected function rrToString()
{
return $this->order . ' ' . $this->preference . ' ' .
$this->formatString($this->flags) . ' ' .
$this->formatString($this->services) . ' ' .
$this->formatString($this->regexp) . ' ' .
$this->cleanString($this->replacement) . '.';
}
/**
* parses the rdata portion from a standard DNS config line
*
* @param array $rdata a string split line of values for the rdata
*
* @return boolean
* @access protected
*
*/
protected function rrFromString(array $rdata)
{
$this->order = array_shift($rdata);
$this->preference = array_shift($rdata);
$data = $this->buildString($rdata);
if (count($data) == 4) {
$this->flags = $data[0];
$this->services = $data[1];
$this->regexp = $data[2];
$this->replacement = $this->cleanString($data[3]);
return true;
}
return false;
}
/**
* parses the rdata of the Net_DNS2_Packet object
*
* @param Net_DNS2_Packet &$packet a Net_DNS2_Packet packet to parse the RR from
*
* @return boolean
* @access protected
*
*/
protected function rrSet(Net_DNS2_Packet &$packet)
{
if ($this->rdlength > 0) {
//
// unpack the order and preference
//
$x = unpack('norder/npreference', $this->rdata);
$this->order = $x['order'];
$this->preference = $x['preference'];
$offset = $packet->offset + 4;
$this->flags = Net_DNS2_Packet::label($packet, $offset);
$this->services = Net_DNS2_Packet::label($packet, $offset);
$this->regexp = Net_DNS2_Packet::label($packet, $offset);
$this->replacement = Net_DNS2_Packet::expand($packet, $offset);
return true;
}
return false;
}
/**
* returns the rdata portion of the DNS packet
*
* @param Net_DNS2_Packet &$packet a Net_DNS2_Packet packet use for
* compressed names
*
* @return mixed either returns a binary packed
* string or null on failure
* @access protected
*
*/
protected function rrGet(Net_DNS2_Packet &$packet)
{
if ( (isset($this->order)) && (strlen($this->services) > 0) ) {
$data = pack('nn', $this->order, $this->preference);
$data .= chr(strlen($this->flags)) . $this->flags;
$data .= chr(strlen($this->services)) . $this->services;
$data .= chr(strlen($this->regexp)) . $this->regexp;
$packet->offset += strlen($data);
$data .= $packet->compress($this->replacement, $packet->offset);
return $data;
}
return null;
}
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* c-hanging-comment-ender-p: nil
* End:
*/
?>
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