public static string GetAccessToken(string resource)
{
// get ClaimsPrincipal for current user
ClaimsPrincipal currentUserClaims = ClaimsPrincipal.Current;
string signedInUserID = currentUserClaims.FindFirst(ClaimTypes.NameIdentifier).Value;
string tenantID = currentUserClaims.FindFirst("http://schemas.microsoft.com/identity/claims/tenantid").Value;
string userObjectID = currentUserClaims.FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier").Value;
ApplicationDbContext db = new ApplicationDbContext();
ADALTokenCache userTokenCache = new ADALTokenCache(signedInUserID);
string urlAuthorityRoot = ConfigurationManager.AppSettings["ida:AADInstance"];
string urlAuthorityTenant = urlAuthorityRoot + tenantID;
AuthenticationContext authenticationContext =
new AuthenticationContext(urlAuthorityTenant, userTokenCache);
Uri uriReplyUrl = new Uri(HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Path));
string clientId = ConfigurationManager.AppSettings["ida:ClientId"];
string clientSecret = ConfigurationManager.AppSettings["ida:ClientSecret"];
ClientCredential clientCredential = new ClientCredential(clientId, clientSecret);
UserIdentifier userIdentifier = new UserIdentifier(userObjectID, UserIdentifierType.UniqueId);
AuthenticationResult authenticationResult =
authenticationContext.AcquireTokenSilentAsync(resource, clientCredential, userIdentifier).Result;
return authenticationResult.AccessToken;
}
public static ADALTokenCache GetTokenCache()
{
// get ClaimsPrincipal for current user
ClaimsPrincipal currentUserClaims = ClaimsPrincipal.Current;
string signedInUserID = currentUserClaims.FindFirst(ClaimTypes.NameIdentifier).Value;
string userObjectID = currentUserClaims.FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier").Value;
ApplicationDbContext db = new ApplicationDbContext();
ADALTokenCache userTokenCache = new ADALTokenCache(signedInUserID);
return userTokenCache;
}
