checkUrlExtension( $whitelist ) ) { return; } $filename = realpath( $wgUploadDirectory . $path ); $realUpload = realpath( $wgUploadDirectory ); // Basic directory traversal check if( substr( $filename, 0, strlen( $realUpload ) ) != $realUpload ) wfForbidden('img-auth-accessdenied','img-auth-notindir'); // Extract the file name and chop off the size specifier // (e.g. 120px-Foo.png => Foo.png) $name = wfBaseName( $path ); if( preg_match( '!\d+px-(.*)!i', $name, $m ) ) $name = $m[1]; // Check to see if the file exists if( !file_exists( $filename ) ) wfForbidden('img-auth-accessdenied','img-auth-nofile',$filename); // Check to see if tried to access a directory if( is_dir( $filename ) ) wfForbidden('img-auth-accessdenied','img-auth-isdir',$filename); $title = Title::makeTitleSafe( NS_FILE, $name ); // See if could create the title object if( !$title instanceof Title ) wfForbidden('img-auth-accessdenied','img-auth-badtitle',$name); // Run hook if (!wfRunHooks( 'ImgAuthBeforeStream', array( &$title, &$path, &$name, &$result ) ) ) wfForbidden($result[0],$result[1],array_slice($result,2)); // Check user authorization for this title // UserCanRead Checks Whitelist too if( !$title->userCanRead() ) wfForbidden('img-auth-accessdenied','img-auth-noread',$name); // Stream the requested file wfDebugLog( 'img_auth', "Streaming `".$filename."`." ); wfStreamFile( $filename, array( 'Cache-Control: private', 'Vary: Cookie' ) ); wfLogProfilingData(); /** * Issue a standard HTTP 403 Forbidden header ($msg1-a message index, not a message) and an * error message ($msg2, also a message index), (both required) then end the script * subsequent arguments to $msg2 will be passed as parameters only for replacing in $msg2 */ function wfForbidden($msg1,$msg2) { global $wgImgAuthDetails; $args = func_get_args(); array_shift( $args ); array_shift( $args ); $MsgHdr = htmlspecialchars(wfMsg($msg1)); $detailMsg = (htmlspecialchars(wfMsg(($wgImgAuthDetails ? $msg2 : 'badaccess-group0'),$args))); wfDebugLog('img_auth', "wfForbidden Hdr:".wfMsgExt( $msg1, array('language' => 'en'))." Msg: ". wfMsgExt($msg2,array('language' => 'en'),$args)); header( 'HTTP/1.0 403 Forbidden' ); header( 'Cache-Control: no-cache' ); header( 'Content-Type: text/html; charset=utf-8' ); echo <<

$MsgHdr

$detailMsg

ENDS; wfLogProfilingData(); exit(); }