wp-includes/class-wp-simplepie-sanitize-kses.php

   1 <?php
   2 /**
   3  * Feed API: WP_SimplePie_Sanitize_KSES class
   4  *
   5  * @package WordPress
   6  * @subpackage Feed
   7  * @since 4.7.0
   8  */
   9
  10 /**
  11  * Core class used to implement SimpliePie feed sanitization.
  12  *
  13  * Extends the SimplePie_Sanitize class to use KSES, because
  14  * we cannot universally count on DOMDocument being available.
  15  *
  16  * @since 3.5.0
  17  *
  18  * @see SimplePie_Sanitize
  19  */
  20 class WP_SimplePie_Sanitize_KSES extends SimplePie_Sanitize {
  21
  22         /**
  23          * WordPress SimplePie sanitization using KSES.
  24          *
  25          * Sanitizes the incoming data, to ensure that it matches the type of data expected, using KSES.
  26          *
  27          * @since 3.5.0
  28          * @access public
  29          *
  30          * @param mixed   $data The data that needs to be sanitized.
  31          * @param integer $type The type of data that it's supposed to be.
  32          * @param string  $base Optional. The `xml:base` value to use when converting relative
  33          *                      URLs to absolute ones. Default empty.
  34          * @return mixed Sanitized data.
  35          */
  36         public function sanitize( $data, $type, $base = '' ) {
  37                 $data = trim( $data );
  38                 if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {
  39                         if (preg_match('/(&(#(x[0-9a-fA-F]+|[0-9]+)|[a-zA-Z0-9]+)|<\/[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>)/', $data)) {
  40                                 $type |= SIMPLEPIE_CONSTRUCT_HTML;
  41                         }
  42                         else {
  43                                 $type |= SIMPLEPIE_CONSTRUCT_TEXT;
  44                         }
  45                 }
  46                 if ( $type & SIMPLEPIE_CONSTRUCT_BASE64 ) {
  47                         $data = base64_decode( $data );
  48                 }
  49                 if ( $type & ( SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML ) ) {
  50                         $data = wp_kses_post( $data );
  51                         if ( $this->output_encoding !== 'UTF-8' ) {
  52                                 $data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );
  53                         }
  54                         return $data;
  55                 } else {
  56                         return parent::sanitize( $data, $type, $base );
  57                 }
  58         }
  59 }