[BLAZOR Custom Authentication] #blazor #cs #identity #authentication #autorization #custom

App.razor

<Router AppAssembly="@typeof(App).Assembly">
    <Found Context="routeData">
        <AuthorizeRouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
        <FocusOnNavigate RouteData="@routeData" Selector="h1" />
    </Found>
    <NotFound>
        <CascadingAuthenticationState>
            <PageTitle>Not found</PageTitle>
            <LayoutView Layout="@typeof(MainLayout)">
                <h1>404 Error</h1>
                <p role="alert">Désolé, il n'y a rien à cette adresse.</p>
            </LayoutView>
        </CascadingAuthenticationState>
    </NotFound>
</Router>

CustomAuthenticationStateProvider.cs

using Microsoft.AspNetCore.Components.Authorization;
using System.Security.Claims;

namespace BatMan.Server
{
    public class CustomAuthenticationStateProvider : AuthenticationStateProvider
    {
        public override Task<AuthenticationState> GetAuthenticationStateAsync()
        {
            var identity = new ClaimsIdentity(new[]
            {
                new Claim(ClaimTypes.Name, "fourgeotf@ciminfo.fr")
            }, "apiauth_type");

            var user = new ClaimsPrincipal(identity);

            return Task.FromResult(new AuthenticationState(user));
        }
    }
}

Index.razor

@page "/"

<PageTitle>Index</PageTitle>

<AuthorizeView>
    <Authorized>
        <p>Bienvenue, @context.User.Identity.Name</p>
    </Authorized>
    <NotAuthorized>
        <p>Vous n'êtes pas authentifié !</p>
    </NotAuthorized>
</AuthorizeView>

Program.cs

...
  
builder.Services.AddScoped<AuthenticationStateProvider, CustomAuthenticationStateProvider>();

...

app.UseRouting();
app.UseCors();

// Ajout des lignes pour Authentication et Autorization
app.UseAuthentication();
app.UseAuthorization();

app.MapDefaultControllerRoute();
app.MapControllers();
app.MapBlazorHub();
app.MapFallbackToPage("/_Host");

app.Run();