This adds a OCS provider list at `ocs-provider/` to enable a somewhat autodiscovery of services.
In the moment it is not possible for applications to add own entries and it is basically hard-coded in the controller. I'm aware that this is not an optimal solution and I'm happy for any pragmatic input that won't pollute our public API too much. (and is not a big super hack, this is already hacky enough ;-))
That said, I'd consider it as a first step also feasible to go with this somewhat hard-coded list and see if this gets adopted...
This enforces proper types on POST and GET arguments where I considered it sensible. I didn't update some as I don't know what kind of values they would support :see_no_evil:
Fixes https://github.com/owncloud/core/issues/14196 for core
Otherwise when the file without any specified mimetype was accessed the error log was flooded with entries such as "Undefined index: mime", there can be multiple issues found about this in the forum and our bugtracker.
To test this access `/index.php/apps/files/ajax/mimeicon.php` with and without `$_GET['mime']`.
Fixes itself.
maintain deprecated \OC::$session when getting or setting the session via the server container or UserSession
restore order os OC::$session and OC::$CLI
remove unneded initialization of dummy session
write back session when $useCustomSession is true
log warning when deprecated app is used