Adding a tool that requires specific Entra group for access #27
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This WIP branch shows how to use the Graph API with OBO flow to find out the groups of the signed in user, and use that to decide whether to allow access to a particular group.
First it modifies the Entra App registration process to grant admin consent. This is required since we do not have preauthorized applications:
https://learn.microsoft.com/entra/identity-platform/v2-oauth2-on-behalf-of-flow#admin-consent
Then in the actual tool, we use the graph API to list the user's memberships:
https://learn.microsoft.com/en-us/graph/api/user-list-memberof?view=graph-rest-1.0&tabs=http
We only receive back the ID of the groups, no other metadata, as that would likely require higher permissions, like User.Read.All:
https://learn.microsoft.com/en-us/graph/permissions-reference#userreadall
All we need is the ID, however.