public ActionResult SignOut()
{
if (Request.IsAuthenticated)
{
var tokenStore = new SessionTokenStorage.SessionTokenStore(null,
System.Web.HttpContext.Current, ClaimsPrincipal.Current);
tokenStore.Clear();
Request.GetOwinContext().Authentication.SignOut(
CookieAuthenticationDefaults.AuthenticationType);
}
return(RedirectToAction("Index", "Home"));
}
private async Task OnAuthorizationCodeReceivedAsync(AuthorizationCodeReceivedNotification notification)
{
var idClient = ConfidentialClientApplicationBuilder.Create(appId)
.WithRedirectUri(redirectUri)
.WithClientSecret(appSecret)
.Build();
var signedInUser = new ClaimsPrincipal(notification.AuthenticationTicket.Identity);
var tokenStore =
new SessionTokenStorage.SessionTokenStore(idClient.UserTokenCache, HttpContext.Current, signedInUser);
try
{
string[] scopes = graphScopes.Split(' ');
var result = await idClient.AcquireTokenByAuthorizationCode(
scopes, notification.Code).ExecuteAsync();
var userDetails = await GraphHelper.GetUserDetailsAsync(result.AccessToken);
var cachedUser = new SessionTokenStorage.CachedUser()
{
DisplayName = userDetails.DisplayName,
Email = string.IsNullOrEmpty(userDetails.Mail) ? userDetails.UserPrincipalName : userDetails.Mail,
Avatar = string.Empty
};
tokenStore.SaveUserDetails(cachedUser);
}
catch (MsalException ex)
{
string message = "AcquireTokenByAuthorizationCodeAsync threw an exception";
notification.HandleResponse();
notification.Response.Redirect($"/Home/Error?message={message}&debug={ex.Message}");
}
catch (Microsoft.Graph.ServiceException ex)
{
string message = "GetUserDetailsAsync threw an exception";
notification.HandleResponse();
notification.Response.Redirect($"/Home/Error?message={message}&debug={ex.Message}");
}
}
protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
if (Request.IsAuthenticated)
{
var tokenStore = new SessionTokenStorage.SessionTokenStore(null,
System.Web.HttpContext.Current, ClaimsPrincipal.Current);
if (tokenStore.HasData())
{
ViewBag.User = tokenStore.GetUserDetails();
}
else
{
// The session has lost data. This happens often // when debugging. Log out so the user can log back in
Request.GetOwinContext().Authentication.SignOut(CookieAuthenticationDefaults.AuthenticationType);
filterContext.Result = RedirectToAction("Index", "Home");
}
}
base.OnActionExecuting(filterContext);
}
internal static GraphServiceClient GetAuthenticatedClient()
{
return(new GraphServiceClient(
new DelegateAuthenticationProvider(
async(requestMessage) =>
{
var idClient = ConfidentialClientApplicationBuilder.Create(appId)
.WithRedirectUri(redirectUri)
.WithClientSecret(appSecret)
.Build();
var tokenStore = new SessionTokenStorage.SessionTokenStore(idClient.UserTokenCache,
HttpContext.Current, ClaimsPrincipal.Current);
var accounts = await idClient.GetAccountsAsync();
var scopes = graphScopes.Split(' ');
var result = await idClient.AcquireTokenSilent(scopes, accounts.FirstOrDefault())
.ExecuteAsync();
requestMessage.Headers.Authorization =
new AuthenticationHeaderValue("Bearer", result.AccessToken);
})));
}
