I want to create a (php) web application where the calendar entries for a specific office 365 user is shown. One should be able to visit the site and see these entries, without having to log in.
My company does not yet have a azure subscription, so i created one with my hotmail address (in case this is relevant).
When researching how to do this, I keep seeing references to setting Application Permissions to Office 365 Exchange Online, such as described here: https://msdn.microsoft.com/en-us/office/office365/howto/building-service-apps-in-office-365 under Defining permissions.
I've registered a web application in Azure AD, and uploaded a x509 certificate in the manifest. When I try to add Application Permissions to read calendar entries, all I can find is Office 365 unified API (preview), which has no Application permissions!
In the Delegated Permissions for Office 365 unified API (preview) I find the equivalent of what I'm looking for, namely the setting Read signed-in user's calendars. But as I understand, service/daemon applications need application permissions, not delegated permissions.
TL;DR: I want my service/daemon app to access user's calendars. I cannot find any application permissions available for office 365 unified api (preview), and office 365 exchange online does not exist in the list.