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<?php
/**
* Feed API: WP_SimplePie_Sanitize_KSES class
*
* @package WordPress
* @subpackage Feed
* @since 4.7.0
*/
/**
* Core class used to implement SimpliePie feed sanitization.
*
* Extends the SimplePie_Sanitize class to use KSES, because
* we cannot universally count on DOMDocument being available.
*
* @since 3.5.0
*
* @see SimplePie_Sanitize
*/
class WP_SimplePie_Sanitize_KSES extends SimplePie_Sanitize {
/**
* WordPress SimplePie sanitization using KSES.
*
* Sanitizes the incoming data, to ensure that it matches the type of data expected, using KSES.
*
* @since 3.5.0
*
* @param mixed $data The data that needs to be sanitized.
* @param integer $type The type of data that it's supposed to be.
* @param string $base Optional. The `xml:base` value to use when converting relative
* URLs to absolute ones. Default empty.
* @return mixed Sanitized data.
*/
public function sanitize( $data, $type, $base = '' ) {
$data = trim( $data );
if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {
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 ) ) {
$type |= SIMPLEPIE_CONSTRUCT_HTML;
} else {
$type |= SIMPLEPIE_CONSTRUCT_TEXT;
}
}
if ( $type & SIMPLEPIE_CONSTRUCT_BASE64 ) {
$data = base64_decode( $data );
}
if ( $type & ( SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML ) ) {
$data = wp_kses_post( $data );
if ( $this->output_encoding !== 'UTF-8' ) {
$data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );
}
return $data;
} else {
return parent::sanitize( $data, $type, $base );
}
}
}
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