I want to implement an OpenIdConnect/Oauth2 server using OpenIddict in order to secure a .NET core API app. Most examples I have seen implement these as separate projects.
The client app is a SPA and we are using implicit flow.
I have based my solution on the code shown in the OpenIddict samples here: https://github.com/openiddict/openiddict-samples
For the project I am working on it would ideally have the Auth server and API to use the same port and be in the same project. ( One of the customer's requirements is that they don't want another server to configure since they own the API resource and it will be on the same server)
I have configured OpenIddict and combined it with our API project. Almost everything works correctly - the API endpoints are protected with the [Authorize] attribute and prevent access to protected API end points. However, when the API resource is protected, instead of returning a 401 Unauthorized HTTP status code, the returned result is the HTML Login page of the Auth server itself.
Here is the relevant setup code in my Startup.cs file:
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
app.UseApplicationInsightsRequestTelemetry();
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
app.UseBrowserLink();
}
else
{
app.UseExceptionHandler("/Home/Error");
}
app.UseApplicationInsightsExceptionTelemetry();
app.UseStaticFiles();
app.UseIdentity();
app.UseCors("AllowAll");
//app.UseCors(builder =>
//{
// builder.AllowAnyOrigin();//)WithOrigins("http://localhost:9000");
// builder.WithMethods("GET","POST", "PUT", "DELETE", "OPTIONS");
// builder.WithHeaders("Authorization");
//});
app.UseWhen(context => !context.Request.Path.StartsWithSegments("/api"), branch =>
{
branch.UseIdentity();
});
app.UseWhen(context => context.Request.Path.StartsWithSegments("/api"), branch =>
{
branch.UseOAuthValidation();
});
app.UseOpenIddict();
#region Adding resource config here (api)
// Add external authentication middleware below. To configure them please see http://go.microsoft.com/fwlink/?LinkID=532715
app.UseOAuthIntrospection(options =>
{
options.AutomaticAuthenticate = true;
options.AutomaticChallenge = true;
options.Authority = "http://localhost:5000";
options.Audiences.Add("resource-server-1");
options.ClientId = "resource-server-1";
options.ClientSecret = "846B62D0-DEF9-4215-A99D-86E6B8DAB342";
});
//app.UseCors(builder => {
// builder.WithOrigins("http://localhost:9000");
// builder.WithMethods("GET");
// builder.WithHeaders("Authorization");
//});
#endregion
app.UseMvcWithDefaultRoute();
// Seed the database with the sample applications.
// Note: in a real world application, this step should be part of a setup script.
InitializeAsync(app.ApplicationServices, CancellationToken.None).GetAwaiter().GetResult();
}
private async Task InitializeAsync(IServiceProvider services, CancellationToken cancellationToken)
{
// Create a new service scope to ensure the database context is correctly disposed when this methods returns.
using (var scope = services.GetRequiredService<IServiceScopeFactory>().CreateScope())
{
var context = scope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
//await context.Database.EnsureCreatedAsync();
var manager = scope.ServiceProvider.GetRequiredService<OpenIddictApplicationManager<OpenIddictApplication>>();
if (await manager.FindByClientIdAsync("MySPA", cancellationToken) == null)
{
var application = new OpenIddictApplication
{
ClientId = "MySPA",
DisplayName = "MySPA",
LogoutRedirectUri = "http://localhost:9000/signout-oidc",
RedirectUri = "http://localhost:9000/signin-oidc"
};
await manager.CreateAsync(application, cancellationToken);
}
if (await manager.FindByClientIdAsync("resource-server-1", cancellationToken) == null)
{
var application = new OpenIddictApplication
{
ClientId = "resource-server-1"
};
await manager.CreateAsync(application, "846B62D0-DEF9-4215-A99D-86E6B8DAB342", cancellationToken);
}
}
}
Not sure how to implement these both side by side in the same project. As mentioned it all "works" except the API is returning the HTML login page and not a desired HTTP status
app.UseIdentity(); is present twice in your pipeline, which defeats the whole purpose of using branch.UseIdentity() in a app.UseWhen() branching builder (i.e making sure the cookies middleware registered by Identity are not invoked for your API endpoints).
Remove the first occurrence and it should work.