In MDL-70689, Eloy and Helen suggested some fixes to improve this patch.
As this is a followup issue to move the pending services, this
very first commit will fix pending things raised in the parent issue.
In order to make easier to create and maintain new OAuth2 services,
a couple of classes have been added:
- discovery\* contains methods related to the discovery system. Until
now, only OpenID Connect was supported by Moodle so all the code was
centralised in api.php.
With this patch, as IMS OBv2.1 has a different discovery system, a new
abstract class (base_definition) has been added to be called and let
every discovery system (OpenID Connect, IMS Badge Connect...)
implement their own methods.
- service\* . Instead of keep adding methods to the api, the service
namespace has been created to store all the standard issuer services.
An interface (issuer_interface) has been created and all the services
should implement it.
This patch creates the "IMS OBv2.1" and "Custom" services and moves
the methods for "Google" service because it uses the OpenID connect
discovery system.
* New button allows to create standard issuer for nextcloud
* Since the endpoints url has to be https and nextcloud relys on the
baseurl to create the endpoints, the baseurl of issuers has now to be
https as well (or empty).
* Google's baseurl was changed to https (there was no reason not to),
whereas Facebook and Microsoft baseurls remain empty.
* In case of the creation of a nextcloud issuer, the baseurl is
required.
* Nextcloud requires the baseurl, therefore a parameter is added to
create_standard_issuer($type, $baseurl = false). That parameter not
required (or used) for anything but Nextcloud.
