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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: TKEY.php 134 2011-12-04 00:49:18Z mike.pultz $
* @link http://pear.php.net/package/Net_DNS2
* @since File available since Release 0.6.0
*
*/
/**
* TKEY Resource Record - RFC 2930 section 2
*
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* / ALGORITHM /
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* | INCEPTION |
* | |
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* | EXPIRATION |
* | |
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* | MODE |
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* | ERROR |
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* | KEY SIZE |
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* / KEY DATA /
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* | OTHER SIZE |
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
* / OTHER DATA /
* +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
*
* @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_TKEY extends Net_DNS2_RR
{
public $algorithm;
public $inception;
public $expiration;
public $mode;
public $error;
public $key_size;
public $key_data;
public $other_size;
public $other_data;
/*
* TSIG Modes
*/
const TSIG_MODE_RES = 0;
const TSIG_MODE_SERV_ASSIGN = 1;
const TSIG_MODE_DH = 2;
const TSIG_MODE_GSS_API = 3;
const TSIG_MODE_RESV_ASSIGN = 4;
const TSIG_MODE_KEY_DELE = 5;
/*
* map the mod id's to names so we can validate
*/
public $tsgi_mode_id_to_name = array(
self::TSIG_MODE_RES => 'Reserved',
self::TSIG_MODE_SERV_ASSIGN => 'Server Assignment',
self::TSIG_MODE_DH => 'Diffie-Hellman',
self::TSIG_MODE_GSS_API => 'GSS-API',
self::TSIG_MODE_RESV_ASSIGN => 'Resolver Assignment',
self::TSIG_MODE_KEY_DELE => 'Key Deletion'
);
/**
* method to return the rdata portion of the packet as a string
*
* @return string
* @access protected
*
*/
protected function rrToString()
{
$out = $this->cleanString($this->algorithm) . '. ' . $this->mode;
if ($this->key_size > 0) {
$out .= ' ' . trim($this->key_data, '.') . '.';
} else {
$out .= ' .';
}
return $out;
}
/**
* 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)
{
//
// data passed in is assumed: <algorithm> <mode> <key>
//
$this->algorithm = $this->cleanString(array_shift($rdata));
$this->mode = array_shift($rdata);
$this->key_data = trim(array_shift($rdata), '.');
//
// the rest of the data is set manually
//
$this->inception = time();
$this->expiration = time() + 86400; // 1 day
$this->error = 0;
$this->key_size = strlen($this->key_data);
$this->other_size = 0;
$this->other_data = '';
return true;
}
/**
* parses the rdata of the Net_DNS2_Packet object
*
* @param Net_DNS2_Packet &$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) {
//
// expand the algorithm
//
$offset = $packet->offset;
$this->algorithm = Net_DNS2_Packet::expand($packet, $offset);
//
// unpack inception, expiration, mode, error and key size
//
$x = unpack(
'@' . $offset . '/Ninception/Nexpiration/nmode/nerror/nkey_size',
$packet->rdata
);
$this->inception = $x['inception'];
$this->expiration = $x['expiration'];
$this->mode = $x['mode'];
$this->error = $x['error'];
$this->key_size = $x['key_size'];
$offset += 14;
//
// if key_size > 0, then copy out the key
//
if ($this->key_size > 0) {
$this->key_data = substr($packet->rdata, $offset, $this->key_size);
$offset += $this->key_size;
}
//
// unpack the other length
//
$x = unpack('@' . $offset . '/nother_size', $packet->rdata);
$this->other_size = $x['other_size'];
$offset += 2;
//
// if other_size > 0, then copy out the data
//
if ($this->other_size > 0) {
$this->other_data = substr(
$packet->rdata, $offset, $this->other_size
);
}
return true;
}
return false;
}
/**
* returns the rdata portion of the DNS packet
*
* @param Net_DNS2_Packet &$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 &$packet)
{
if (strlen($this->algorithm) > 0) {
//
// make sure the size values are correct
//
$this->key_size = strlen($this->key_data);
$this->other_size = strlen($this->other_data);
//
// add the algorithm without compression
//
$data = Net_DNS2_Packet::pack($this->algorithm);
//
// pack in the inception, expiration, mode, error and key size
//
$data .= pack(
'NNnnn', $this->inception, $this->expiration,
$this->mode, 0, $this->key_size
);
//
// if the key_size > 0, then add the key
//
if ($this->key_size > 0) {
$data .= $this->key_data;
}
//
// pack in the other size
//
$data .= pack('n', $this->other_size);
if ($this->other_size > 0) {
$data .= $this->other_data;
}
return $data;
}
return null;
}
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* c-hanging-comment-ender-p: nil
* End:
*/
?>
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