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Current Path : /opt/cpanel/ea-php54/root/usr/share/pear/Net/DNS2/RR/
Current File : //opt/cpanel/ea-php54/root/usr/share/pear/Net/DNS2/RR/URI.php
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

/**
 * DNS Library for handling lookups and updates.
 *
 * PHP Version 5
 *
 * Copyright (c) 2011, 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 2011 Mike Pultz <mike@mikepultz.com>
 * @license   http://www.opensource.org/licenses/bsd-license.php  BSD License
 * @version   SVN: $Id$
 * @link      http://pear.php.net/package/Net_DNS2
 * @since     File available since Release 1.2.0
 *
 */

/**
 * URI Resource Record - http://tools.ietf.org/html/draft-faltstrom-uri-06
 *
 *    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 *    |                   PRIORITY                    |
 *    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 *    |                    WEIGHT                     |
 *    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 *    /                    TARGET                     /
 *    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 *
 * @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_URI extends Net_DNS2_RR
{
    /*
     * The priority of this target host.
     */
    public $priority;

    /*
     * a relative weight for entries with the same priority
     */
    public $weight;

    /*
      * The domain name of the target host
     */
    public $target;

    /**
     * method to return the rdata portion of the packet as a string
     *
     * @return  string
     * @access  protected
     *
     */
    protected function rrToString()
    {
        //
        // presentation format has double quotes (") around the target.
        //
        return $this->priority . ' ' . $this->weight . ' "' . 
            $this->cleanString($this->target) . '"';
    }

    /**
     * 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->priority = $rdata[0];
        $this->weight   = $rdata[1];

        //
        // make sure to trim the lead/trailing double quote if it's there.
        //
        $this->target   = trim($this->cleanString($rdata[2]), '"');
        
        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) {
            
            //
            // unpack the priority and weight
            //
            $x = unpack('npriority/nweight', $this->rdata);

            $this->priority = $x['priority'];
            $this->weight   = $x['weight'];

            $offset         = $packet->offset + 4;
            $this->target   = Net_DNS2_Packet::expand($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 (strlen($this->target) > 0) {

            $data = pack('nn', $this->priority, $this->weight);
            $packet->offset += 4;

            $data .= $packet->compress(trim($this->target, '"'), $packet->offset);

            return $data;
        }

        return null;
    }
}

?>
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