library/HTMLPurifier/HTMLModule/Scripting.php

   1 <?php
   2
   3 /*
   4
   5 WARNING: THIS MODULE IS EXTREMELY DANGEROUS AS IT ENABLES INLINE SCRIPTING
   6 INSIDE HTML PURIFIER DOCUMENTS. USE ONLY WITH TRUSTED USER INPUT!!!
   7
   8 */
   9
  10 /**
  11  * Implements required attribute stipulation for <script>
  12  */
  13 class HTMLPurifier_AttrTransform_ScriptRequired extends HTMLPurifier_AttrTransform
  14 {
  15     function transform($attr, $config, &$context) {
  16         if (!isset($attr['type'])) {
  17             $attr['type'] = 'text/javascript';
  18         }
  19         return $attr;
  20     }
  21 }
  22
  23 /**
  24  * XHTML 1.1 Scripting module, defines elements that are used to contain
  25  * information pertaining to executable scripts or the lack of support
  26  * for executable scripts.
  27  * @note This module does not contain inline scripting elements
  28  */
  29 class HTMLPurifier_HTMLModule_Scripting extends HTMLPurifier_HTMLModule
  30 {
  31     var $name = 'Scripting';
  32     var $elements = array('script', 'noscript');
  33     var $content_sets = array('Block' => 'script | noscript', 'Inline' => 'script | noscript');
  34
  35     function HTMLPurifier_HTMLModule_Scripting() {
  36         // TODO: create custom child-definition for noscript that
  37         // auto-wraps stray #PCDATA in a similar manner to
  38         // blockquote's custom definition (we would use it but
  39         // blockquote's contents are optional while noscript's contents
  40         // are required)
  41
  42         // TODO: convert this to new syntax, main problem is getting
  43         // both content sets working
  44         foreach ($this->elements as $element) {
  45             $this->info[$element] = new HTMLPurifier_ElementDef();
  46             $this->info[$element]->safe = false;
  47         }
  48         $this->info['noscript']->attr = array( 0 => array('Common') );
  49         $this->info['noscript']->content_model = 'Heading | List | Block';
  50         $this->info['noscript']->content_model_type = 'required';
  51         $this->info['script']->attr = array(
  52             'defer' => new HTMLPurifier_AttrDef_Enum(array('defer')),
  53             'src'   => new HTMLPurifier_AttrDef_URI(true),
  54             'type'  => new HTMLPurifier_AttrDef_Enum(array('text/javascript'))
  55         );
  56         $this->info['script']->content_model = '#PCDATA';
  57         $this->info['script']->content_model_type = 'optional';
  58         $this->info['script']->attr_transform_pre['type'] =
  59         $this->info['script']->attr_transform_post['type'] =
  60             new HTMLPurifier_AttrTransform_ScriptRequired();
  61     }
  62 }
  63