Just to avoid users from trying this with a to new (untested) php version

* Moved the check logic to 1 place
* All directly callable scripts just require this on top
* exit hard (-1) so we know scripts won't continue
* Return status 500 so no sync clients will try fancy stuff

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

If there is an exception in the template handling then a white page is shown.
This improves the handling of this and shows text only about the internal
error.

To test this just setup redis as cache and then disable the php-redis module.

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

* Changed request to not add a prefix to the url

* Expecting forbidden instead of service unavailable

* Handling login exceptions

Signed-off-by: Joas Schilling <coding@schilljs.com>

Make the code fail hard before people update and then experience some half-broken stuff. See also https://github.com/nextcloud/docker-ci/issues/10

This reverts commit 6a1a4880.

We can't check the PHP version in the installer since base.php already used 5.4 syntax. Thus for a better UX we show a simple warning instead of a fatal PHP error.

There is not much sense in having these files marked executable, we should avoid that.

Log the error instead of potentially leaking sensitive information

At that point the checks are already done before