139 lines
4.1 KiB
PHP
139 lines
4.1 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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if ( ! defined( 'SHORTINIT' ) ) {
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define( 'SHORTINIT', true );
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require_once( dirname( dirname( __FILE__ ) ) . '/wp-load.php' );
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}
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ms_default_constants( 'ms-files' );
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if ( $current_blog->archived == '1' || $current_blog->spam == '1' || $current_blog->deleted == '1' ) {
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status_header( 404 );
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die( '404 — File not found.' );
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}
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if ( !function_exists('wp_check_filetype') ) :
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function wp_check_filetype($filename, $mimes = null) {
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// Accepted MIME types are set here as PCRE unless provided.
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$mimes = is_array($mimes) ? $mimes : array (
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'jpg|jpeg|jpe' => 'image/jpeg',
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'gif' => 'image/gif',
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'png' => 'image/png',
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'bmp' => 'image/bmp',
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'tif|tiff' => 'image/tiff',
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'ico' => 'image/x-icon',
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'asf|asx|wax|wmv|wmx' => 'video/asf',
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'avi' => 'video/avi',
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'mov|qt' => 'video/quicktime',
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'mpeg|mpg|mpe' => 'video/mpeg',
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'txt|c|cc|h' => 'text/plain',
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'rtx' => 'text/richtext',
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'css' => 'text/css',
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'htm|html' => 'text/html',
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'mp3|mp4' => 'audio/mpeg',
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'ra|ram' => 'audio/x-realaudio',
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'wav' => 'audio/wav',
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'ogg' => 'audio/ogg',
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'mid|midi' => 'audio/midi',
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'wma' => 'audio/wma',
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'rtf' => 'application/rtf',
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'js' => 'application/javascript',
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'pdf' => 'application/pdf',
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'doc' => 'application/msword',
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'pot|pps|ppt' => 'application/vnd.ms-powerpoint',
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'wri' => 'application/vnd.ms-write',
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'xla|xls|xlt|xlw' => 'application/vnd.ms-excel',
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'mdb' => 'application/vnd.ms-access',
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'mpp' => 'application/vnd.ms-project',
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'swf' => 'application/x-shockwave-flash',
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'class' => 'application/java',
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'tar' => 'application/x-tar',
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'zip' => 'application/zip',
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'gz|gzip' => 'application/x-gzip',
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'exe' => 'application/x-msdownload'
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);
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$type = false;
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$ext = false;
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foreach ( (array) $mimes as $ext_preg => $mime_match ) {
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$ext_preg = '!\.(' . $ext_preg . ')$!i';
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if ( preg_match($ext_preg, $filename, $ext_matches) ) {
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$type = $mime_match;
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$ext = $ext_matches[1];
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break;
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}
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}
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return compact('ext', 'type');
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}
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endif;
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$file = 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( $_SERVER[ 'REQUEST_URI' ] );
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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( $_SERVER[ 'REQUEST_URI' ], strrpos( $_SERVER[ 'REQUEST_URI' ], '.' ) + 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'] ) ? stripslashes( $_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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?>
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