1: <?php
 2: /**
 3:  * The Horde_Mime_Viewer_Security class is a wrapper used to load the
 4:  * appropriate Horde_Mime_Viewer for secure multipart messages (defined by RFC
 5:  * 1847). This class handles multipart/signed and multipart/encrypted data.
 6:  *
 7:  * Copyright 2002-2012 Horde LLC (http://www.horde.org/)
 8:  *
 9:  * See the enclosed file COPYING for license information (LGPL). If you
10:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
11:  *
12:  * @author   Michael Slusarz <slusarz@horde.org>
13:  * @category Horde
14:  * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
15:  * @package  Mime_Viewer
16:  */
17: class Horde_Mime_Viewer_Security extends Horde_Mime_Viewer_Base
18: {
19:     /**
20:      * Constructor.
21:      *
22:      * @param Horde_Mime_Part $mime_part  The object with the data to be
23:      *                                    rendered.
24:      * @param array $conf                 Configuration:
25:      * <pre>
26:      * 'viewer_callback' - (callback) A callback to a factory that will
27:      *                     return the appropriate viewer for the embedded
28:      *                     MIME type. Is passed three parameters: the
29:      *                     current driver object, the MIME part object, and
30:      *                     the MIME type to use.
31:      * </pre>
32:      */
33:     public function __construct(Horde_Mime_Part $part, array $conf = array())
34:     {
35:         parent::__construct($part, $conf);
36:     }
37: 
38:     /**
39:      * Return the underlying MIME Viewer for this part.
40:      *
41:      * @return mixed  A Horde_Mime_Viewer object, or false if not found.
42:      */
43:     protected function _getViewer()
44:     {
45:         if (($callback = $this->getConfigParam('viewer_callback')) &&
46:             ($protocol = $this->_mimepart->getContentTypeParameter('protocol'))) {
47:             return call_user_func($callback, $this, $this->_mimepart, $protocol);
48:         }
49: 
50:         return false;
51:     }
52: 
53: }
54: