public static string ProcessForm(HttpContext context)
{
File.WriteAllText(Constants.logDir + DateTime.UtcNow.Millisecond.ToString() + ".txt"
, "req recieved");
StringBuilder bogusreason = new StringBuilder();
if (context.Request.RequestType == "POST")
{
//verify receiver
if (string.Compare(context.Request.Params["receiver_email"], receiverEmail, true) != 0)
{
bogusreason.Append("invalid receiver");
}
string deviceId = context.Request.Params["option_selection1"];
string appId = context.Request.Params["option_selection2"];
string transactionId = context.Request.Params["txn_id"];
if (string.IsNullOrEmpty(transactionId))
{
bogusreason.Append("invalid trans id");
}
//verify payment status
string paymentStatus = context.Request.Params["payment_status"];
if (string.Compare(paymentStatus, Constants.successPaymentSatus, true) != 0)
{
bogusreason.Append("payment status not complete");
}
else
{//check it is not repeated transaction id
//verify txn_id is not repeated
bool isRepeated = PaymentProcessor.IsCompletedTransId(transactionId);
if (isRepeated)
{
bogusreason.Append("repeated transaction Id");
}
}
string firstName = context.Request.Params["first_name"];
string lastName = context.Request.Params["last_name"];
//verify trans type
if (String.Compare(context.Request.Params["txn_type"],
"web_accept", false) != 0)
{
bogusreason.Append("invalid tran type");
}
string payAmountStr = context.Request.Params["mc_gross"];
double payAmount;
if (!double.TryParse(payAmountStr, out payAmount) || payAmount < minAmount)
{
bogusreason.Append("payment not enough");
}
if (string.Compare(context.Request.Params["mc_currency"], currencyCode, true) != 0)
{
bogusreason.Append("invalid currency");
}
string payerEMail = context.Request.Params["payer_email"];
if (bogusreason.Length == 0)
{
PaymentProcessor.AddTransactionInfo(new Payment(appId, transactionId, deviceId, paymentStatus, payAmount.ToString(), payerEMail, null, firstName, lastName));
}
else
{
File.WriteAllText(Constants.logDir + DateTime.UtcNow.Ticks.ToString(),
bogusreason.ToString());
}
return(null);
}
return(null);
}