public void ProcessRequest(HttpContext context)
{
AuthenticationResponse response = AuthenticationUtility.HandleResponse();
if (response.IDTokenPayload.IssueTimestamp.ToLocalTime() > DateTime.Now && response.IDTokenPayload.ExpirationTimestamp.ToLocalTime() > DateTime.Now)
{
//The token is expired or not valid anymore, go back to Root of application now
context.Response.Redirect("~/", true);
}
/*
* Use the E-Mail address of the user as an identifier for demonstration purposes
* Note: you may want to use response.IDTokenPayload.UserUniqueIdentifier instead
* that represents the sub parameter as google recommends to do so. See
* the "sub" parameter description at "An ID token's payload":
* https://developers.google.com/accounts/docs/OpenIDConnect#obtainuserinfo
* Before you call SetAuthCookie method, you could also do some additional authorization
* checks with the given user information.
*/
FormsAuthentication.SetAuthCookie(response.IDTokenPayload.Email, false);
context.Session["UserInformation"] = response.UserInformation;
//We've but the redirect url in the state before authenticating, so let's go back there now
context.Response.Redirect(response.State, true);
}