File Content: ms-files.php <?php /** * Multisite upload handler. * * @since 3.0.0 * * @package WordPress * @subpackage Multisite */ define( 'SHORTINIT', true ); require_once( dirname( dirname( __FILE__ ) ) . '/wp-load.php' ); if ( !is_multisite() ) die( 'Multisite support not enabled' ); ms_file_constants(); error_reporting( 0 ); if ( $current_blog->archived == '1' || $current_blog->spam == '1' || $current_blog->deleted == '1' ) { status_header( 404 ); die( '404 &#8212; File not found.' ); } $file = rtrim( BLOGUPLOADDIR, '/' ) . '/' . str_replace( '..', '', $_GET[ 'file' ] ); if ( !is_file( $file ) ) { status_header( 404 ); die( '404 &#8212; 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 ) ); // Optional support for X-Sendfile and X-Accel-Redirect if ( WPMU_ACCEL_REDIRECT ) { header( 'X-Accel-Redirect: ' . str_replace( WP_CONTENT_DIR, '', $file ) ); exit; } elseif ( WPMU_SENDFILE ) { header( 'X-Sendfile: ' . $file ); exit; } $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 - use stripslashes to avoid formatting.php dependency $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 ); flush(); Submit