83 lines
2.5 KiB
PHP
83 lines
2.5 KiB
PHP
<?php
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/**
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* Multisite upload handler.
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*
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* @since 3.0.0
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*
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* @package WordPress
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* @subpackage Multisite
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*/
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define( 'SHORTINIT', true );
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require_once( dirname( dirname( __FILE__ ) ) . '/wp-load.php' );
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if( !is_multisite() )
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die( 'Multisite support not enabled' );
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ms_file_constants();
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error_reporting( 0 );
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if ( $current_blog->archived == '1' || $current_blog->spam == '1' || $current_blog->deleted == '1' ) {
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status_header( 404 );
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die( '404 — File not found.' );
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}
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$file = rtrim( BLOGUPLOADDIR, '/' ) . '/' . str_replace( '..', '', $_GET[ 'file' ] );
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if ( !is_file( $file ) ) {
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status_header( 404 );
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die( '404 — File not found.' );
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}
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$mime = wp_check_filetype( $file );
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if( false === $mime[ 'type' ] && function_exists( 'mime_content_type' ) )
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$mime[ 'type' ] = mime_content_type( $file );
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if( $mime[ 'type' ] )
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$mimetype = $mime[ 'type' ];
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else
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$mimetype = 'image/' . substr( $file, strrpos( $file, '.' ) + 1 );
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header( 'Content-Type: ' . $mimetype ); // always send this
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if ( false === strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS' ) )
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header( 'Content-Length: ' . filesize( $file ) );
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// Optional support for X-Sendfile and X-Accel-Redirect
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if ( WPMU_ACCEL_REDIRECT ) {
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header( 'X-Accel-Redirect: ' . str_replace( WP_CONTENT_DIR, '', $file ) );
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exit;
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} elseif ( WPMU_SENDFILE ) {
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header( 'X-Sendfile: ' . $file );
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exit;
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}
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$last_modified = gmdate( 'D, d M Y H:i:s', filemtime( $file ) );
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$etag = '"' . md5( $last_modified ) . '"';
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header( "Last-Modified: $last_modified GMT" );
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header( 'ETag: ' . $etag );
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header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + 100000000 ) . ' GMT' );
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// Support for Conditional GET
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$client_etag = isset( $_SERVER['HTTP_IF_NONE_MATCH'] ) ? wp_unslash( $_SERVER['HTTP_IF_NONE_MATCH'] ) : false;
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if( ! isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) )
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$_SERVER['HTTP_IF_MODIFIED_SINCE'] = false;
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$client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE'] );
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// If string is empty, return 0. If not, attempt to parse into a timestamp
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$client_modified_timestamp = $client_last_modified ? strtotime( $client_last_modified ) : 0;
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// Make a timestamp for our most recent modification...
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$modified_timestamp = strtotime($last_modified);
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if ( ( $client_last_modified && $client_etag )
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? ( ( $client_modified_timestamp >= $modified_timestamp) && ( $client_etag == $etag ) )
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: ( ( $client_modified_timestamp >= $modified_timestamp) || ( $client_etag == $etag ) )
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) {
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status_header( 304 );
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exit;
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}
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// If we made it this far, just serve the file
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readfile( $file );
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