/src/JAXL/core/jaxl_util.php

<?php
/**
* Jaxl (Jabber XMPP Library)
*
* Copyright (c) 2009-2012, Abhinav Singh <me@abhinavsingh.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 Abhinav Singh 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.
*
*/

/**
 *
 * @author abhinavsingh
 *
 */
class JAXLUtil
{

    public static function get_nonce($binary = true)
    {
        $nce = '';
        mt_srand((double) microtime()*10000000);
        for ($i = 0; $i<32; $i++) {
            $nce .= chr(mt_rand(0, 255));
        }
        return $binary ? $nce : base64_encode($nce);
    }

    public static function get_dns_srv($domain)
    {
        $rec = dns_get_record("_xmpp-client._tcp.".$domain, DNS_SRV);
        if (is_array($rec)) {
            if (count($rec) == 0) {
                return array($domain, 5222);
            }
            if (count($rec) > 0) {
                return array($rec[0]['target'], $rec[0]['port']);
            }
        }
    }

    public static function pbkdf2($data, $secret, $iteration, $dkLen = 32, $algo = 'sha1')
    {
        return '';
    }
}