File indexing completed on 2024-05-12 06:02:04

 <?php
 
 /**
  * Validates name/value pairs in param tags to be used in safe objects. This
  * will only allow name values it recognizes, and pre-fill certain attributes
  * with required values.
  *
  * @note
  *      This class only supports Flash. In the future, Quicktime support
  *      may be added.
  *
  * @warning
  *      This class expects an injector to add the necessary parameters tags.
  */
 class HTMLPurifier_AttrTransform_SafeParam extends HTMLPurifier_AttrTransform
 {
     /**
      * @type string
      */
     public $name = "SafeParam";
 
     /**
      * @type HTMLPurifier_AttrDef_URI
      */
     private $uri;
 
     public function __construct()
     {
         $this->uri = new HTMLPurifier_AttrDef_URI(true); // embedded
         $this->wmode = new HTMLPurifier_AttrDef_Enum(array('window', 'opaque', 'transparent'));
     }
 
     /**
      * @param array $attr
      * @param HTMLPurifier_Config $config
      * @param HTMLPurifier_Context $context
      * @return array
      */
     public function transform($attr, $config, $context)
     {
         // If we add support for other objects, we'll need to alter the
         // transforms.
         switch ($attr['name']) {
             // application/x-shockwave-flash
             // Keep this synchronized with Injector/SafeObject.php
             case 'allowScriptAccess':
                 $attr['value'] = 'never';
                 break;
             case 'allowNetworking':
                 $attr['value'] = 'internal';
                 break;
             case 'allowFullScreen':
                 if ($config->get('HTML.FlashAllowFullScreen')) {
                     $attr['value'] = ($attr['value'] == 'true') ? 'true' : 'false';
                 } else {
                     $attr['value'] = 'false';
                 }
                 break;
             case 'wmode':
                 $attr['value'] = $this->wmode->validate($attr['value'], $config, $context);
                 break;
             case 'movie':
             case 'src':
                 $attr['name'] = "movie";
                 $attr['value'] = $this->uri->validate($attr['value'], $config, $context);
                 break;
             case 'flashvars':
                 // we're going to allow arbitrary inputs to the SWF, on
                 // the reasoning that it could only hack the SWF, not us.
                 break;
             // add other cases to support other param name/value pairs
             default:
                 $attr['name'] = $attr['value'] = null;
         }
         return $attr;
     }
 }
 
 // vim: et sw=4 sts=4