.Net Core 2.0 Web API OpenIddict Authorization: redirecting to index instead of returning json data - openiddict

Question

So, the problem is that when I use the AuthorizeAttribute on top of my api controller, it stops working the expected way.
When I call a getAllUsers action, instead of returning the users in json format, the Identity somehow redirects to index.html and then I get a json parser error in my Angular client app, because html is not valid json data that can be parsed.
This started to happen after upgrading to Asp.Net Core 2.0.
I think that perhaps I have to change something in my Startup.cs or Program.cs. But I can't figure out what.
I have followed the Refresh Token Sample on OpenIddict for the new Core 2.0, and everything seems to be ok.
So here is my code...
Startup.cs
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<ApplicationDbContext>(options => {
options.UseSqlServer(Configuration.GetConnectionString("LocalDB"))
.UseOpenIddict();
});
services.AddScoped<IUserRepository, UserRepository>();
services.AddScoped<IRoleRepository, RoleRepository>();
services.AddScoped<IManadRepository, ManadRepository>();
services.AddScoped<IManadRubricaRepository, ManadRubricaRepository>();
services.AddScoped<IManadSistemaRepository, ManadSistemaRepository>();
services.AddScoped<IRestituicaoRepository, RestituicaoRepository>();
services.AddTransient<ApplicationDbSeedData>();
services.AddIdentity<ApplicationUser, ApplicationRole>(options =>
{
options.User.RequireUniqueEmail = true;
options.ClaimsIdentity.UserNameClaimType = OpenIdConnectConstants.Claims.Name;
options.ClaimsIdentity.UserIdClaimType = OpenIdConnectConstants.Claims.Subject;
options.ClaimsIdentity.RoleClaimType = OpenIdConnectConstants.Claims.Role;
})
.AddEntityFrameworkStores<ApplicationDbContext>()
.AddDefaultTokenProviders();
services.AddOpenIddict(options =>
{
options.AddEntityFrameworkCoreStores<ApplicationDbContext>();
options.AddMvcBinders();
options.EnableTokenEndpoint("/connect/token");
options.AllowPasswordFlow();
options.AllowRefreshTokenFlow();
if (!_env.IsProduction())
options.DisableHttpsRequirement();
});
// Add framework services.
services.AddMvc();
services.AddAuthentication()
.AddOAuthValidation();
services.AddAuthorization();
services.AddTransient<IMailSender, MailjetSender>();
services.AddScoped<IManadParser, ManadParser>();
}
public void Configure(IApplicationBuilder app, ApplicationDbSeedData dbDataSeeder)
{
if (_env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseWebpackDevMiddleware(new WebpackDevMiddlewareOptions
{
HotModuleReplacement = true
});
}
else
{
app.UseExceptionHandler("/Home/Error");
}
Mapper.Initialize(cfg =>
{
cfg.AddProfile<AutoMapperProfile>();
});
app.UseStaticFiles();
app.UseAuthentication();
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
routes.MapSpaFallbackRoute(
name: "spa-fallback",
defaults: new { controller = "Home", action = "Index" });
});
dbDataSeeder.EnsureSeedData().Wait();
}
UsersController.cs
[Route("api/[controller]")]
[Authorize]
public class UsersController : Controller
{
[HttpGet]
[Authorize(Roles = "Administrador")]
public IActionResult GetAllUsers()
{
try
{
var result = _repository.GetAllUsers();
return Ok(result);
}
catch (Exception ex)
{
_logger.LogError($"Failed to get all users: {ex}");
return BadRequest(ex.Message);
}
}
}
If I put a breakpoint in the GetAllUsers method, it never gets hitted. Somehow because of authorization, the application redirects to index.html before.
Program.cs
public class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.UseStartup<Startup>()
.Build();
}
By the way, authentication is working. I am able to get the tokens, but unable to authorize the controller access.

Answer 1

Solved it. Just needed some bit of configuration just like I thought. Just add DefaultAuthenticateScheme option like this:
services.AddAuthentication(options => options.DefaultAuthenticateScheme = OAuthValidationDefaults.AuthenticationScheme)
.AddOAuthValidation();
After adding this, the controller started to work correctly, resulting json data and not index.html.