Deprecation: #84324 - Use ServerRequestInterface in File/FileController

See Issue #84324

Description

All methods not used as entry points by TYPO3\CMS\Backend\Http\RouteDispatcher will be removed or set to protected in v10 and throw deprecation warnings if used from a third party:

  • [not scanned] main()

  • php:initClipboard()
  • php:finish()

Impact

Calling one of the above methods on an instance of FileController will throw a deprecation warning in v9 and a PHP fatal in v10.

Affected Installations

The extension scanner will find most usages, but may also find some false positives. In general all extensions that call methods except mainAction() are affected.

Migration

In general, extensions should not instantiate and re-use controllers of the core. Existing usages should be rewritten to be free of calls like these.