New in version 11.4

The PSR-14 event \TYPO3\CMS\Core\Resource\Event\ModifyFileDumpEvent is fired in the \TYPO3\CMS\Core\Controller\FileDumpController and allows extensions to perform additional access / security checks before dumping a file. The event does not only contain the file to dump but also the PSR-7 Request.

In case the file dump should be rejected, the event has to set a PSR-7 response, usually with a 403 status code. This will then immediately stop the propagation.

With the event, it is not only possible to reject the file dump request, but also to replace the file, which should be dumped.




namespace MyVendor\MyExtension\Resource\EventListener;

use TYPO3\CMS\Core\Attribute\AsEventListener;
use TYPO3\CMS\Core\Resource\Event\ModifyFileDumpEvent;

    identifier: 'my-extension/modify-file-dump',
final readonly class MyEventListener
    public function __invoke(ModifyFileDumpEvent $event): void
        // Do magic here

New in version 13.0

The PHP attribute \TYPO3\CMS\Core\Attribute\AsEventListener has been introduced to tag a PHP class as an event listener. Alternatively, or if you need to be compatible with older TYPO3 versions, you can also register an event listener via the Configuration/Services.yaml file. Switch to an older version of this page for an example or have a look at the section Implementing an event listener in your extension.


class ModifyFileDumpEvent
Fully qualified name

Event that is triggered when a file should be dumped to the browser, allowing to perform custom security/access checks when accessing a file through a direct link, and returning an alternative Response.

It is also possible to replace the file during this event, but not setting a response.

As soon as a custom Response is added, the propagation is stopped.

getFile ( )
setFile ( TYPO3\CMS\Core\Resource\ResourceInterface $file)
param $file

the file

getRequest ( )
setResponse ( Psr\Http\Message\ResponseInterface $response)
param $response

the response

getResponse ( )
isPropagationStopped ( )