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<?php
// +-----------------------------------------------------------------------+
// | Copyright (c) 2002-2003 Richard Heyes |
// | All rights reserved. |
// | |
// | Redistribution and use in source and binary forms, with or without |
// | modification, are permitted provided that the following conditions |
// | are met: |
// | |
// | o Redistributions of source code must retain the above copyright |
// | notice, this list of conditions and the following disclaimer. |
// | o 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.|
// | o The names of the authors may not 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, STRICT 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: Richard Heyes <richard@php.net> |
// +-----------------------------------------------------------------------+
//
// $Id$
/**
* Client implementation of various SASL mechanisms
*
* @author Richard Heyes <richard@php.net>
* @access public
* @version 1.0
* @package Auth_SASL
*/
require_once('PEAR.php');
class Auth_SASL
{
/**
* Factory class. Returns an object of the request
* type.
*
* @param string $type One of: Anonymous
* Plain
* CramMD5
* DigestMD5
* SCRAM-* (any mechanism of the SCRAM family)
* Types are not case sensitive
*/
public static function factory($type)
{
switch (strtolower($type)) {
case 'anonymous':
$filename = 'Auth/SASL/Anonymous.php';
$classname = 'Auth_SASL_Anonymous';
break;
case 'login':
$filename = 'Auth/SASL/Login.php';
$classname = 'Auth_SASL_Login';
break;
case 'plain':
$filename = 'Auth/SASL/Plain.php';
$classname = 'Auth_SASL_Plain';
break;
case 'external':
$filename = 'Auth/SASL/External.php';
$classname = 'Auth_SASL_External';
break;
case 'crammd5':
// $msg = 'Deprecated mechanism name. Use IANA-registered name: CRAM-MD5.';
// trigger_error($msg, E_USER_DEPRECATED);
case 'cram-md5':
$filename = 'Auth/SASL/CramMD5.php';
$classname = 'Auth_SASL_CramMD5';
break;
case 'digestmd5':
// $msg = 'Deprecated mechanism name. Use IANA-registered name: DIGEST-MD5.';
// trigger_error($msg, E_USER_DEPRECATED);
case 'digest-md5':
// $msg = 'DIGEST-MD5 is a deprecated SASL mechanism as per RFC-6331. Using it could be a security risk.';
// trigger_error($msg, E_USER_NOTICE);
$filename = 'Auth/SASL/DigestMD5.php';
$classname = 'Auth_SASL_DigestMD5';
break;
default:
$scram = '/^SCRAM-(.{1,9})$/i';
if (preg_match($scram, $type, $matches))
{
$hash = $matches[1];
$filename = dirname(__FILE__) .'/SASL/SCRAM.php';
$classname = 'Auth_SASL_SCRAM';
$parameter = $hash;
break;
}
return PEAR::raiseError('Invalid SASL mechanism type');
break;
}
require_once($filename);
if (isset($parameter))
$obj = new $classname($parameter);
else
$obj = new $classname();
return $obj;
}
}
?>
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