Blazor WASM, IdentityServer4 with Multiple Roles, Additional User Claim(s) & gRPC Roles Authorization

(Whoa Nelly, this thing does work!) 😉

This .NET 6 Preview repo combines two repo's by @javiercn:

1. https://github.com/javiercn/BlazorAuthRoles
2. https://github.com/javiercn/BlazorGrpcAuth

(To run this repo you'll need .NET 6.0 SDK and Visual Studio Preview)

I've added Role Authorization to the -Greeter -gRPC -Service:

Server/Startup.cs

endpoints
    .MapGrpcService<GreeterService>()
    .RequireAuthorization(new AuthorizeAttribute { Roles = "Administrator"})
    .EnableGrpcWeb();

I've also added a Client/Claims.razor page with a list of the current user's claims.

It uses Kestrel as the default webserver, a SQLite database and is "CTRL-F5'able" without any further configuration.

You can delete de SQLite database and migrations folder if you want and use the following commands in Visual Studio's Package Manager Console to re-create the db.

1. Add-Migration InitialCreate
2. Update-Database

At first run the app will create 2 users (if they don't exist, see: Server/SeedData.cs)

1. admin@example.com / Qwerty1234#
2. user@example.com / Qwerty1234#

and 2 roles:

1. Users
2. Administrators

The 'Administrators' & 'Users' roles will be assigned to: admin@example.com

The 'Users' role will be assigned to: user@example.com

Additional Claim(s)

(By George, I think I've got it)

1. I've extended ASP.NET Identity AspNetUsers table with an extra 'CustomClaim' field (see: Server/Models/ApplicationUser.cs).
2. Seeded a value to that CustomClaim field in: Server/Data/SeedData.cs
3. Added: Server/AppClaimsPrincipalFactory.cs
4. Modified: Server/Startup.cs to use AppClaimsPrincipalFactory.cs
5. When you run the app you'll see the custom_claim in the Client/Pages/Claims.razor page