WordPress 4.7
[autoinstalls/wordpress.git] / 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 }