1: <?php
  2: /**
  3:  * The Horde_Mime_Viewer_Tnef class allows MS-TNEF attachments to be
  4:  * displayed.
  5:  *
  6:  * Copyright 2002-2012 Horde LLC (http://www.horde.org/)
  7:  *
  8:  * See the enclosed file COPYING for license information (LGPL). If you
  9:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
 10:  *
 11:  * @author   Jan Schneider <jan@horde.org>
 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_Tnef extends Horde_Mime_Viewer_Base
 18: {
 19:     /**
 20:      * This driver's display capabilities.
 21:      *
 22:      * @var array
 23:      */
 24:     protected $_capability = array(
 25:         'full' => false,
 26:         'info' => false,
 27:         'inline' => false,
 28:         'raw' => false
 29:     );
 30: 
 31:     /**
 32:      * Metadata for the current viewer/data.
 33:      *
 34:      * @var array
 35:      */
 36:     protected $_metadata = array(
 37:         'compressed' => true,
 38:         'embedded' => true,
 39:         'forceinline' => true
 40:     );
 41: 
 42:     /**
 43:      * Constructor.
 44:      *
 45:      * @param Horde_Mime_Part $mime_part  The object with the data to be
 46:      *                                    rendered.
 47:      * @param array $conf                 Configuration:
 48:      * <pre>
 49:      * 'tnef' - (Horde_Compress_Tnef) TNEF object.
 50:      * </pre>
 51:      *
 52:      * @throws InvalidArgumentException
 53:      */
 54:     public function __construct(Horde_Mime_Part $part, array $conf = array())
 55:     {
 56:         parent::__construct($part, $conf);
 57:     }
 58: 
 59:     /**
 60:      * If this MIME part can contain embedded MIME part(s), and those part(s)
 61:      * exist, return a representation of that data.
 62:      *
 63:      * @return mixed  A Horde_Mime_Part object representing the embedded data.
 64:      *                Returns null if no embedded MIME part(s) exist.
 65:      */
 66:     protected function _getEmbeddedMimeParts()
 67:     {
 68:         /* Get the data from the attachment. */
 69:         if (!($tnef = $this->getConfigParam('tnef'))) {
 70:             $tnef = Horde_Compress::factory('Tnef');
 71:             $this->setConfigParam('tnef', $tnef);
 72:         }
 73:         $tnefData = $tnef->decompress($this->_mimepart->getContents());
 74: 
 75:         if (!count($tnefData)) {
 76:             return null;
 77:         }
 78: 
 79:         $mixed = new Horde_Mime_Part();
 80:         $mixed->setType('multipart/mixed');
 81: 
 82:         reset($tnefData);
 83:         while (list($key, $data) = each($tnefData)) {
 84:             $temp_part = new Horde_Mime_Part();
 85:             $temp_part->setName($data['name']);
 86:             $temp_part->setDescription($data['name']);
 87:             $temp_part->setContents($data['stream']);
 88: 
 89:             /* Short-circuit MIME-type guessing for winmail.dat parts;
 90:              * we're showing enough entries for them already. */
 91:             $type = $data['type'] . '/' . $data['subtype'];
 92:             if (in_array($type, array('application/octet-stream', 'application/base64'))) {
 93:                 $type = Horde_Mime_Magic::filenameToMIME($data['name']);
 94:             }
 95:             $temp_part->setType($type);
 96: 
 97:             $mixed->addPart($temp_part);
 98:         }
 99: 
100:         return $mixed;
101:     }
102: 
103: }
104: