public async Task OnPostAsync()

in Source/WebApp-IdentityProvider-MFA/Areas/Identity/Pages/Account/Manage/EnableAuthenticator.cshtml.cs [77:120]

36 lines of code
5 McCabe index (conditional complexity)


        public async Task<IActionResult> OnPostAsync()
        {
            var user = await _userManager.GetUserAsync(User);
            if (user == null)
            {
                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
            }

            if (!ModelState.IsValid)
            {
                await LoadSharedKeyAndQrCodeUriAsync(user);
                return Page();
            }

            // Strip spaces and hyphens
            var verificationCode = Input.Code.Replace(" ", string.Empty).Replace("-", string.Empty);

            var is2faTokenValid = await _userManager.VerifyTwoFactorTokenAsync(
                user, _userManager.Options.Tokens.AuthenticatorTokenProvider, verificationCode);

            if (!is2faTokenValid)
            {
                ModelState.AddModelError("Input.Code", "Le code de vérification est invalide.");
                await LoadSharedKeyAndQrCodeUriAsync(user);
                return Page();
            }

            await _userManager.SetTwoFactorEnabledAsync(user, true);
            var userId = await _userManager.GetUserIdAsync(user);
            _logger.LogInformation("User with ID '{UserId}' has enabled 2FA with an authenticator app.", userId);

            StatusMessage = "Votre application d'authentification a été validée.";

            if (await _userManager.CountRecoveryCodesAsync(user) == 0)
            {
                var recoveryCodes = await _userManager.GenerateNewTwoFactorRecoveryCodesAsync(user, 10);
                RecoveryCodes = recoveryCodes.ToArray();
                return RedirectToPage("./ShowRecoveryCodes");
            }
            else
            {
                return RedirectToPage("./TwoFactorAuthentication");
            }
        }