WordPress 4.7-scripts

[autoinstalls/wordpress.git] / wp-includes / class-wp-simplepie-sanitize-kses.php

diff --git a/wp-includes/class-wp-simplepie-sanitize-kses.php b/wp-includes/class-wp-simplepie-sanitize-kses.php
new file mode 100644 (file)
index 0000000..dce5edc
--- /dev/null
+++ b/wp-includes/class-wp-simplepie-sanitize-kses.php
@@ -0,0 +1,59 @@
+<?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
+        * @access public
+        *
+        * @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 );
+               }
+       }
+}