//
// GET: /UserProfile/
public async Task<ActionResult> Index()
{
//
// Retrieve the user's name, tenantID, and access token since they are parameters used to query the Graph API.
//
UserProfile profile;
string tenantId = ClaimsPrincipal.Current.FindFirst(TenantIdClaimType).Value;
AuthenticationResult result = null;
try
{
// Get the access token from the cache
string userObjectID =
ClaimsPrincipal.Current.FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier")
.Value;
AuthenticationContext authContext = new AuthenticationContext(Startup.Authority,
new NaiveSessionCache(userObjectID));
ClientCredential credential = new ClientCredential(clientId, appKey);
result = authContext.AcquireTokenSilent(graphResourceId, credential,
new UserIdentifier(userObjectID, UserIdentifierType.UniqueId));
// Call the Graph API manually and retrieve the user's profile.
string requestUrl = String.Format(
CultureInfo.InvariantCulture,
graphUserUrl,
HttpUtility.UrlEncode(tenantId));
HttpClient client = new HttpClient();
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, requestUrl);
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", result.AccessToken);
HttpResponseMessage response = await client.SendAsync(request);
// Return the user's profile in the view.
if (response.IsSuccessStatusCode)
{
string responseString = await response.Content.ReadAsStringAsync();
profile = JsonConvert.DeserializeObject<UserProfile>(responseString);
}
else
{
// If the call failed, then drop the current access token and show the user an error indicating they might need to sign-in again.
authContext.TokenCache.Clear();
profile = new UserProfile();
profile.DisplayName = " ";
profile.GivenName = " ";
profile.Surname = " ";
ViewBag.ErrorMessage = "UnexpectedError";
}
}
catch (Exception e)
{
if (Request.QueryString["reauth"] == "True")
{
//
// Send an OpenID Connect sign-in request to get a new set of tokens.
// If the user still has a valid session with Azure AD, they will not be prompted for their credentials.
// The OpenID Connect middleware will return to this controller after the sign-in response has been handled.
//
HttpContext.GetOwinContext()
.Authentication.Challenge(OpenIdConnectAuthenticationDefaults.AuthenticationType);
}
//
// The user needs to re-authorize. Show them a message to that effect.
//
profile = new UserProfile();
profile.DisplayName = " ";
profile.GivenName = " ";
profile.Surname = " ";
ViewBag.ErrorMessage = "AuthorizationRequired";
}
return View(profile);
}
//
// GET: /UserProfile/
public async Task<ActionResult> Index()
{
//
// Retrieve the user's name, tenantID, and access token since they are parameters used to query the Graph API.
//
UserProfile profile;
string accessToken = null;
string tenantId = ClaimsPrincipal.Current.FindFirst(TenantIdClaimType).Value;
if (tenantId != null)
{
accessToken = TokenCacheUtils.GetAccessTokenFromCacheOrRefreshToken(tenantId, graphResourceId);
}
//
// If the user doesn't have an access token, they need to re-authorize.
//
if (accessToken == null)
{
//
// If refresh is set to true, the user has clicked the link to be authorized again.
//
if (Request.QueryString["reauth"] == "True")
{
//
// Send an OpenID Connect sign-in request to get a new set of tokens.
// If the user still has a valid session with Azure AD, they will not be prompted for their credentials.
// The OpenID Connect middleware will return to this controller after the sign-in response has been handled.
//
HttpContext.GetOwinContext().Authentication.Challenge(OpenIdConnectAuthenticationDefaults.AuthenticationType);
}
//
// The user needs to re-authorize. Show them a message to that effect.
//
profile = new UserProfile();
profile.DisplayName = " ";
profile.GivenName = " ";
profile.Surname = " ";
ViewBag.ErrorMessage = "AuthorizationRequired";
return View(profile);
}
//
// Call the Graph API and retrieve the user's profile.
//
string requestUrl = String.Format(
CultureInfo.InvariantCulture,
graphUserUrl,
HttpUtility.UrlEncode(tenantId));
HttpClient client = new HttpClient();
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, requestUrl);
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
HttpResponseMessage response = await client.SendAsync(request);
//
// Return the user's profile in the view.
//
if (response.IsSuccessStatusCode)
{
string responseString = await response.Content.ReadAsStringAsync();
profile = JsonConvert.DeserializeObject<UserProfile>(responseString);
}
else
{
//
// If the call failed, then drop the current access token and show the user an error indicating they might need to sign-in again.
//
TokenCacheUtils.RemoveAccessTokenFromCache(graphResourceId);
profile = new UserProfile();
profile.DisplayName = " ";
profile.GivenName = " ";
profile.Surname = " ";
ViewBag.ErrorMessage = "UnexpectedError";
}
return View(profile);
}
