I need to manage permissions of
SPFolder in a SharePoint document library from a SharePoint app published in the Office Store.
But looks like it's impossible, because:
Read, Write, Manage, FullControl (in app) corresponds to the default permission levels: Reader, Contributor, Designer, and FULL CONTROL.
Manage Permissions - Create and change permission levels on the Web site and assign permissions to users and groups. Included in these permission levels: Full Control
5.9 Your app for SharePoint cannot request full-control permission.
So, we need FullControl permissions to manage permissions and we won't pass validation if we have FullControl.
Am I right? I can't change folder permissions from provider-hosted app?