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// Don't load directly.
 11if ( ! defined( 'ABSPATH' ) ) {
 12	die( '-1' );
 13}
 14
 15/**
 16 * Core class used to implement SimplePie feed sanitization.
 17 *
 18 * Extends the SimplePie\Sanitize class to use KSES, because
 19 * we cannot universally count on DOMDocument being available.
 20 *
 21 * @since 3.5.0
 22 */
 23#[AllowDynamicProperties]
 24class WP_SimplePie_Sanitize_KSES extends SimplePie\Sanitize {
 25
 26	/**
 27	 * WordPress SimplePie sanitization using KSES.
 28	 *
 29	 * Sanitizes the incoming data, to ensure that it matches the type of data expected, using KSES.
 30	 *
 31	 * @since 3.5.0
 32	 *
 33	 * @param mixed   $data The data that needs to be sanitized.
 34	 * @param int     $type The type of data that it's supposed to be.
 35	 * @param string  $base Optional. The `xml:base` value to use when converting relative
 36	 *                      URLs to absolute ones. Default empty.
 37	 * @return mixed Sanitized data.
 38	 */
 39	public function sanitize( $data, $type, $base = '' ) {
 40		$data = trim( $data );
 41		if ( $type & SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML ) {
 42			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 ) ) {
 43				$type |= SimplePie\SimplePie::CONSTRUCT_HTML;
 44			} else {
 45				$type |= SimplePie\SimplePie::CONSTRUCT_TEXT;
 46			}
 47		}
 48		if ( $type & SimplePie\SimplePie::CONSTRUCT_BASE64 ) {
 49			$data = base64_decode( $data );
 50		}
 51		if ( $type & ( SimplePie\SimplePie::CONSTRUCT_HTML | \SimplePie\SimplePie::CONSTRUCT_XHTML ) ) {
 52			$data = wp_kses_post( $data );
 53			if ( 'UTF-8' !== $this->output_encoding ) {
 54				$data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );
 55			}
 56			return $data;
 57		} else {
 58			return parent::sanitize( $data, $type, $base );
 59		}
 60	}
 61}
 62