// -------------------------------------------------------------
// validate means verify
private string Validate(string jsonCmd)
{
string jsonResult;
JObject cmdObject = JObject.Parse(jsonCmd);
PaddleProductID prodID = cmdObject.Value <PaddleProductID>(kPaddleCmdKey_SKU);
PaddleProduct product = Paddle_GetProduct(prodID);
if (!product.Activated)
{
VerificationState state;
if (product.TrialDaysRemaining > 0)
{
state = VerificationState.Verified;
}
else
{
state = VerificationState.NoActivation;
}
CJsonResult jResult = new CJsonResult {
successB = state == VerificationState.Verified,
resultI = Convert.ToInt32(state)
};
jsonResult = CreateJsonResult(jResult);
}
else
{
DateTime lastSuccessDateT = product.LastSuccessfulVerifiedDate;
TimeSpan spanSinceSuccessT = DateTime.Now - lastSuccessDateT;
double hoursSinceSuccessT = spanSinceSuccessT.TotalHours;
// Verify the activation only if it's been a while.
if (hoursSinceSuccessT < 1)
{
CJsonResult jResult = new CJsonResult {
successB = true,
resultI = Convert.ToInt32(VerificationState.Verified)
};
// No need to verify. The product is activated. All's well.
jsonResult = CreateJsonResult(jResult);
}
else
{
ScTask task = new ScTask();
product.VerifyActivation(
(PaddleSDK.Product.VerificationState in_state, string resultStr) =>
{
VerificationState state = (VerificationState)in_state;
bool destroyB = false;
switch (state)
{
case VerificationState.Unverified: {
// The activation is no longer valid. Destroy it, let the user know and continue with
// the trial.
destroyB = true;
} break;
case VerificationState.UnableToVerify: {
// Verify that the last successful verify date is valid.
// And then implement a cooldown strategy.
// Ensure that the last successful verified date appears valid.
// As `compare:` "detects sub-second differences" the dates should not be the same.
// Equally we can't have verified the activation in the future.
// future dates have a negative time span since now:
if (hoursSinceSuccessT < 0)
{
// The last successfully verified date does not seem valid. If the time difference
// is less than 24 hours, a timezone change is possible. Other than that, tampering
// seems likely.
//
// In doubt, destroy the activation and ask the user to reactivate.
destroyB = true;
}
// Implement a cooldown period: if the user has not gone online within the period,
// then destroy the activation and ask them to go online to re-activate.
double daysSinceSuccessT = spanSinceSuccessT.TotalDays;
if (daysSinceSuccessT >= 30)
{
destroyB = true;
}
else
{
// The grace period continues, so the user can continue to use the core functionality.
state = VerificationState.Verified;
}
} break;
}
if (destroyB)
{
product.DestroyActivation();
state = VerificationState.Unverified;
}
CJsonResult jResult = new CJsonResult {
successB = state == VerificationState.Verified,
resultI = Convert.ToInt32(state),
errStr = resultStr
};
task.set_result(CreateJsonResult(jResult));
});
jsonResult = task.await_result();
}
}
return(jsonResult);
}
