TYPO3 Core

Anja Leichsenring wrote:

Class typo3/sysext/core/Classes/Type/File/FileInfo.php provides a function getMimeType, which uses functions of php extension fileinfo. If this extension is not available, mimetype will probably be false, at least if it is not provided by custom configuration via $GLOBALS['TYPO3_CONF_VARS']['SYS']['FileInfo']['fileExtensionToMimeType'].

In order to properly provide mimetype detection, the php extension fileinfo needs to be a requirement.

There are circumstances where "fileinfo" is not provided (custom php compilation, also on cloud hosting - I know that this was an issue with Microsoft Azure in TYPO3 v8), so we'd prevent having TYPO3 on these systems... for now we'd have that fallback in place and use it as "suggest".

In phar-stream-wrapper package this implicit requirement had to be removed again as well - there were scenarios when \finfo was not available on PHP7 environments - e.g.

• https://github.com/TYPO3/phar-stream-wrapper/pull/33
• https://www.drupal.org/project/drupal/issues/3053552#comment-13099793