protected override bool?VerifyUserImpl(string username, string password)
{
using (var ctx = LearnLanguagesContextManager.Instance.GetManager())
{
var results = from userData in ctx.ObjectContext.UserDatas
where userData.Username == username
select userData;
if (results.Count() == 1)
{
var user = results.First();
var authenticated = (SaltedHashedPassword.GetHashedPasswordValue(password, user.Salt) == user.SaltedHashedPasswordValue);
//RETURNS SUCCESS IF VALIDATION IS AUTHENTICATED OR NOT. DOES *NOT* THROW EXCEPTION
//IF CREDENTIALS ARE INVALID.
return(authenticated);
}
else
{
if (results.Count() == 0)
{
return(false); //FALSE BECAUSE USER NOT FOUND
}
else
{
//results.count is not one or zero. either it's negative, which would be framework absurd, or its more than one,
//which means that we have multiple users with the same username. this is very bad.
var errorMsg = string.Format(DalResources.ErrorMsgVeryBadException,
DalResources.ErrorMsgVeryBadExceptionDetail_ResultCountNotOneOrZero);
throw new Exceptions.VeryBadException(errorMsg);
}
}
}
}
