protected void processPayPalData()
{
// refreshing cart (should be empty as IPN should have fired)
RefreshCart();
authToken = Configuration.PaypalPDTToken;
//read in txn token from querystring
txToken = Request.QueryString.Get("tx");
query = string.Format("cmd=_notify-synch&tx={0}&at={1}", txToken, authToken);
// Create the request back
string url = Configuration.PaypalEnv;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
// Set values for the request back
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
req.ContentLength = query.Length;
// Write the request back IPN strings
StreamWriter stOut = new StreamWriter(req.GetRequestStream(), System.Text.Encoding.ASCII);
stOut.Write(query);
stOut.Close();
// Do the request to PayPal and get the response
StreamReader stIn = new StreamReader(req.GetResponse().GetResponseStream());
strResponse = stIn.ReadToEnd();
stIn.Close();
// sanity check
lblPDT.Text = strResponse;
// If response was SUCCESS, parse response string and output details
if (strResponse.StartsWith("SUCCESS"))
{
PDTData data = PDTData.Parse(strResponse, false);
lblResult.Text = "<b>" + Resources.Lang.PayPalThankyouLabel + "</b> <br/><br/>" +
Resources.Lang.SaveTransactionID + "<b>" + data.TransactionId + "</b>";
}
else
{
lblResult.Text = Resources.Lang.ErrorInPayPalLabel;
}
}
protected void processRequest()
{
try
{
string postUrl = Configuration.PaypalEnv;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(postUrl);
//Set values for the request back
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
byte[] param = Request.BinaryRead(HttpContext.Current.Request.ContentLength);
string strRequest = Encoding.ASCII.GetString(param);
string ipnPost = strRequest;
strRequest += "&cmd=_notify-validate";
req.ContentLength = strRequest.Length;
//Send the request to PayPal and get the response
StreamWriter streamOut = new StreamWriter(req.GetRequestStream(), System.Text.Encoding.ASCII);
streamOut.Write(strRequest);
streamOut.Close();
StreamReader streamIn = new StreamReader(req.GetResponse().GetResponseStream());
string strResponse = streamIn.ReadToEnd();
streamIn.Close();
if (strResponse == "VERIFIED")
{
strRequest = HttpUtility.UrlDecode(strRequest);
strRequest = strRequest.Replace('&', '\n');
PDTData pdt = PDTData.Parse(strRequest, true);
//check that receiver_email is your Primary PayPal email
if (pdt.ReceiverEmail != Configuration.PaypalSellerEmail)
{
BasePage.Log(null, "PayPal receiver email different from default:" + pdt.ReceiverEmail + " - txnID: " + pdt.TransactionId, "", "IPN Handler");
return;
}
//check that payment_amount/payment_currency are correct
if (pdt.Currency != Configuration.PaypalCurrency)
{
BasePage.Log(null, "PayPal currency different from default:" + pdt.ReceiverEmail + " - txnID: " + pdt.TransactionId, "", "IPN Handler");
return;
}
//check the payment_status is Completed
//check that txn_id has not been previously processed
PAYPAL_PAYMENT pp = ApplicationContext.Current.Payments.GetByTxnId(pdt.TransactionId);
List <SHOPPING_CART> carts = ApplicationContext.Current.Carts.GetShoppingCartItems(pdt.Invoice);
if (pdt.PaymentStatus.ToUpper() == "COMPLETED" || pdt.PaymentStatus.ToUpper() == "PENDING" || pdt.PaymentStatus.ToUpper() == "PROCESSED")
{
// first time proccessing for this payment
if (pp == null && carts != null && carts.Count > 0)
{
savePayPalOrder(pdt, carts, strRequest);
}
else if (pp == null)
{
BasePage.Log(null, "PayPal " + pdt.PaymentStatus + " TxnId: " + pdt.TransactionId + " but CART EXPIRED \n Response: " + strRequest, "", "IPN Handler");
BasePage.sendMailToAdmins("PayPal payment " + pdt.PaymentStatus + " but cart expired. PLACE REFUND!", "A " + pdt.PaymentStatus + " IPN was notified for cart " + pdt.Invoice +
" from " + pdt.PayerEmail + " for the amount " + pdt.GrossTotal + " " + pdt.Currency + " but the cart expired. \nProceed with REFUND!");
}
}
else
{
//In the case of a refund, reversal, or canceled reversal
if (pp == null && !String.IsNullOrWhiteSpace(pdt.ParentTransactionId))
{
pp = ApplicationContext.Current.Payments.GetByTxnId(pdt.ParentTransactionId);
}
}
// update of existing paypal transaction
if (pp != null)
{
updatePayPalData(pdt, pp, strRequest);
}
}
else if (strResponse == "INVALID")
{
BasePage.Log(null, "Invalid IPN request" + strRequest, "", "IPN Handler");
}
else
{
BasePage.Log(null, "IPN request" + strRequest, "", "IPN Handler");
}
}
catch (Exception ex)
{
BasePage.Log(ex, ex.Message, ex.StackTrace, "paypalSuccess.Save");
}
}
