public async Task LoginAsync(string username, string password) {
const string Scheme = "Bearer";
await Task.Run(() => {
_context = new Microsoft.WindowsAzure.ActiveDirectory.Authentication.AuthenticationContext(Tenant.ToString());
var providers = _context.GetProviders(Realm);
var identity = providers.First(x => x.Name.Equals(Provider, StringComparison.InvariantCultureIgnoreCase));
var credential = new UsernamePasswordCredential(identity.Name, username, password);
_credential = _context.AcquireToken(Realm, identity, credential);
var token = _credential.AsSecurityToken();
var header = _credential.CreateAuthorizationHeader();
_claims = token.Claims;
_client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(Scheme, _credential.Assertion);
}).ConfigureAwait(false);
}
AuthenticationResult GetAccessToken()
{
AuthenticationResult _authenticationResult = null;
string resource = ConfigurationManager.AppSettings["ServiceRealm"];
try
{
if (selectedIdentityProviderDescriptor == null)
{
// Get the list of Idps
List <IdentityProviderDescriptor> idps = (List <IdentityProviderDescriptor>)_authenticationContext.GetProviders(resource);
if (idps.Count > 1)
{
// pop up a Home Realm Discovery window and let the user choose an Idp
ChooseIdp(idps);
}
else
{
selectedIdentityProviderDescriptor = idps[0];
}
}
// Invoke AuthenticationContext.AcquireToken to obtain an access token to access the Shipper service.
// It will use a pop-up window to initiate the logon flow.
_authenticationResult = _authenticationContext.AcquireToken(resource, selectedIdentityProviderDescriptor);
ClearErrorLabel();
if (_authenticationResult == null)
{
DisplayUserNotAuthenticatedError();
}
}
catch (ActiveDirectoryAuthenticationException ex)
{
string message = ex.Message;
if (ex.InnerException != null)
{
message += (" " + ex.InnerException.Message);
}
DisplayErrorMessage(message);
}
catch (Exception ex)
{
DisplayErrorMessage(ex.Message);
}
return(_authenticationResult);
}