WordPress 4.2.2
[autoinstalls/wordpress.git] / wp-admin / includes / update-core.php
index 5a97b183423d8f5f39b066cc3e082d868cf86c7b..a15cc887e12158e8646e9bf7b215d201f1c10021 100644 (file)
@@ -1050,6 +1050,9 @@ function update_core($from, $to) {
                $wp_filesystem->delete($old_file, true);
        }
 
+       // Remove any Genericons example.html's from the filesystem
+       _upgrade_422_remove_genericons();
+
        // Upgrade DB with separate request
        /** This filter is documented in wp-admin/includes/update-core.php */
        apply_filters( 'update_feedback', __( 'Upgrading database…' ) );
@@ -1188,3 +1191,67 @@ window.location = 'about.php?updated';
        exit();
 }
 add_action( '_core_updated_successfully', '_redirect_to_about_wordpress' );
+
+/**
+ * Cleans up Genericons example files.
+ *
+ * @since 4.2.2
+ */
+function _upgrade_422_remove_genericons() {
+       global $wp_theme_directories, $wp_filesystem;
+
+       // A list of the affected files using the filesystem absolute paths.
+       $affected_files = array();
+
+       // Themes
+       foreach ( $wp_theme_directories as $directory ) {
+               $affected_theme_files = _upgrade_422_find_genericons_files_in_folder( $directory );
+               $affected_files       = array_merge( $affected_files, $affected_theme_files );
+       }
+
+       // Plugins
+       $affected_plugin_files = _upgrade_422_find_genericons_files_in_folder( WP_PLUGIN_DIR );
+       $affected_files        = array_merge( $affected_files, $affected_plugin_files );
+
+       foreach ( $affected_files as $file ) {
+               $gen_dir = $wp_filesystem->find_folder( trailingslashit( dirname( $file ) ) );
+               if ( empty( $gen_dir ) ) {
+                       continue;
+               }
+
+               // The path when the file is accessed via WP_Filesystem may differ in the case of FTP
+               $remote_file = $gen_dir . basename( $file );
+
+               if ( ! $wp_filesystem->exists( $remote_file ) ) {
+                       continue;
+               }
+
+               if ( ! $wp_filesystem->delete( $remote_file, false, 'f' ) ) {
+                       $wp_filesystem->put_contents( $remote_file, '' );
+               }
+       }
+}
+
+/**
+ * Recursively find Genericons example files in a given folder.
+ *
+ * @ignore
+ * @since 4.2.2
+ *
+ * @param string $directory Directory path. Expects trailingslashed.
+ * @return array
+ */
+function _upgrade_422_find_genericons_files_in_folder( $directory ) {
+       $directory = trailingslashit( $directory );
+       $files     = array();
+
+       if ( file_exists( "{$directory}example.html" ) && false !== strpos( file_get_contents( "{$directory}example.html" ), '<title>Genericons</title>' ) ) {
+               $files[] = "{$directory}example.html";
+       }
+
+       foreach ( glob( $directory . '*', GLOB_ONLYDIR ) as $dir ) {
+               $files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );
+       }
+
+       return $files;
+}