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class-wp-simplepie-sanitize-kses.php (1775B)

      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 	 *
     29 	 * @param mixed   $data The data that needs to be sanitized.
     30 	 * @param int     $type The type of data that it's supposed to be.
     31 	 * @param string  $base Optional. The `xml:base` value to use when converting relative
     32 	 *                      URLs to absolute ones. Default empty.
     33 	 * @return mixed Sanitized data.
     34 	 */
     35 	public function sanitize( $data, $type, $base = '' ) {
     36 		$data = trim( $data );
     37 		if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {
     38 			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 ) ) {
     39 				$type |= SIMPLEPIE_CONSTRUCT_HTML;
     40 			} else {
     41 				$type |= SIMPLEPIE_CONSTRUCT_TEXT;
     42 			}
     43 		}
     44 		if ( $type & SIMPLEPIE_CONSTRUCT_BASE64 ) {
     45 			$data = base64_decode( $data );
     46 		}
     47 		if ( $type & ( SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML ) ) {
     48 			$data = wp_kses_post( $data );
     49 			if ( 'UTF-8' !== $this->output_encoding ) {
     50 				$data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );
     51 			}
     52 			return $data;
     53 		} else {
     54 			return parent::sanitize( $data, $type, $base );
     55 		}
     56 	}
     57 }