public ExternalUser GetAuthenticatedUser()
{
if (_cachedUser != null)
{
return(_cachedUser);
}
var ticketToken = GetRequestTicketToken();
if (ticketToken == null || ticketToken.Length < TOKEN_LENTH)
{
return(null);
}
var token = ticketToken.Substring(TOKEN_LENTH);
var identity = _oAuthProvider.GetIdentity(token);
return(GetAuthenticatedUserByTicket(identity));
}