3 * Multisite upload handler.
8 * @subpackage Multisite
11 define( 'SHORTINIT', true );
12 require_once( dirname( dirname( __FILE__ ) ) . '/wp-load.php' );
15 die( 'Multisite support not enabled' );
21 if ( $current_blog->archived == '1' || $current_blog->spam == '1' || $current_blog->deleted == '1' ) {
23 die( '404 — File not found.' );
26 $file = rtrim( BLOGUPLOADDIR, '/' ) . '/' . str_replace( '..', '', $_GET[ 'file' ] );
27 if ( !is_file( $file ) ) {
29 die( '404 — File not found.' );
32 $mime = wp_check_filetype( $file );
33 if( false === $mime[ 'type' ] && function_exists( 'mime_content_type' ) )
34 $mime[ 'type' ] = mime_content_type( $file );
37 $mimetype = $mime[ 'type' ];
39 $mimetype = 'image/' . substr( $file, strrpos( $file, '.' ) + 1 );
41 header( 'Content-Type: ' . $mimetype ); // always send this
42 if ( false === strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS' ) )
43 header( 'Content-Length: ' . filesize( $file ) );
45 // Optional support for X-Sendfile and X-Accel-Redirect
46 if ( WPMU_ACCEL_REDIRECT ) {
47 header( 'X-Accel-Redirect: ' . str_replace( WP_CONTENT_DIR, '', $file ) );
49 } elseif ( WPMU_SENDFILE ) {
50 header( 'X-Sendfile: ' . $file );
54 $last_modified = gmdate( 'D, d M Y H:i:s', filemtime( $file ) );
55 $etag = '"' . md5( $last_modified ) . '"';
56 header( "Last-Modified: $last_modified GMT" );
57 header( 'ETag: ' . $etag );
58 header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + 100000000 ) . ' GMT' );
60 // Support for Conditional GET - use stripslashes to avoid formatting.php dependency
61 $client_etag = isset( $_SERVER['HTTP_IF_NONE_MATCH'] ) ? stripslashes( $_SERVER['HTTP_IF_NONE_MATCH'] ) : false;
63 if( ! isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) )
64 $_SERVER['HTTP_IF_MODIFIED_SINCE'] = false;
66 $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE'] );
67 // If string is empty, return 0. If not, attempt to parse into a timestamp
68 $client_modified_timestamp = $client_last_modified ? strtotime( $client_last_modified ) : 0;
70 // Make a timestamp for our most recent modification...
71 $modified_timestamp = strtotime($last_modified);
73 if ( ( $client_last_modified && $client_etag )
74 ? ( ( $client_modified_timestamp >= $modified_timestamp) && ( $client_etag == $etag ) )
75 : ( ( $client_modified_timestamp >= $modified_timestamp) || ( $client_etag == $etag ) )
81 // If we made it this far, just serve the file