* @license GPL-3.0+ * @registry SPDX */ require_once(‘wp-load.php’); is_user_logged_in() || auth_redirect(); list($basedir) = array_values(array_intersect_key(wp_upload_dir(), array(‘basedir’ => 1)))+array(NULL); $file = rtrim($basedir,’/’).’/’.str_replace(‘..’, ”, isset($_GET[ ‘file’ ])?$_GET[ ‘file’ ]:”); if (!$basedir || !is_file($file)) { status_header(404); die(‘404 — File not found.’); } $mime = wp_check_filetype($file); if( false === $mime[ ‘type’ ] && function_exists( ‘mime_content_type’ ) ) $mime[ ‘type’ ] = mime_content_type( $file ); if( $mime[ ‘type’ ] ) $mimetype = $mime[ ‘type’ ]; else $mimetype = ‘image/’ . substr( $file, strrpos( $file, ‘.’ ) + 1 ); header( ‘Content-Type: ‘ . $mimetype ); // always send this if ( false === strpos( $_SERVER[‘SERVER_SOFTWARE’], ‘Microsoft-IIS’ ) ) header( ‘Content-Length: ‘ . filesize( $file ) ); $last_modified = gmdate( ‘D, d M Y H:i:s’, filemtime( $file ) ); $etag = ‘”‘ . md5( $last_modified ) . ‘”‘; header( “Last-Modified: $last_modified GMT” ); header( ‘ETag: ‘ . $etag ); header( ‘Expires: ‘ . gmdate( ‘D, d M Y H:i:s’, time() + 100000000 ) . ‘ GMT’ ); // Support for Conditional GET $client_etag = isset( $_SERVER[‘HTTP_IF_NONE_MATCH’] ) ? stripslashes( $_SERVER[‘HTTP_IF_NONE_MATCH’] ) : false; if( ! isset( $_SERVER[‘HTTP_IF_MODIFIED_SINCE’] ) ) $_SERVER[‘HTTP_IF_MODIFIED_SINCE’] = false; $client_last_modified = trim( $_SERVER[‘HTTP_IF_MODIFIED_SINCE’] ); // If string is empty, return 0. If not, attempt to parse into a timestamp $client_modified_timestamp = $client_last_modified ? strtotime( $client_last_modified ) : 0; // Make a timestamp for our most recent modification… $modified_timestamp = strtotime($last_modified); if ( ( $client_last_modified && $client_etag ) ? ( ( $client_modified_timestamp >= $modified_timestamp) && ( $client_etag == $etag ) ) : ( ( $client_modified_timestamp >= $modified_timestamp) || ( $client_etag == $etag ) ) ) { status_header( 304 ); exit; } // If we made it this far, just serve the file readfile( $file );