ModifyFileDumpEvent

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.

Example

Registration of the event listener in the extension's Services.yaml:

EXT:my_extension/Configuration/Services.yaml
services:
  # Place here the default dependency injection configuration

  MyVendor\MyExtension\Resource\EventListener\MyEventListener:
    tags:
      - name: event.listener
        identifier: 'my-extension/modify-file-dump'
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Read how to configure dependency injection in extensions.

The corresponding event listener class:

EXT:my_extension/Classes/Resource/EventListener/MyEventListener.php
<?php

declare(strict_types=1);

namespace MyVendor\MyExtension\Resource\EventListener;

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

final class MyEventListener
{
    public function __invoke(ModifyFileDumpEvent $event): void
    {
        // Do magic here
    }
}
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API

class ModifyFileDumpEvent
Fully qualified name
\TYPO3\CMS\Core\Resource\Event\ModifyFileDumpEvent

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 ( )
Returns
TYPO3CMSCoreResourceResourceInterface
setFile ( TYPO3\CMS\Core\Resource\ResourceInterface $file)
param $file

the file

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

the response

getResponse ( )
Returns
?PsrHttpMessageResponseInterface
isPropagationStopped ( )
Returns
bool