public IpnResult Ipn(HttpRequestBase request)
{
var result = new IpnResult();
string encoded = request.Params["encoded"];
string checksum = request.Params["checksum"];
if (checksum == calculateHmac(encoded))
{
string response = "";
string data = Encoding.UTF8.GetString(Convert.FromBase64String(encoded));
foreach (string line in data.Split('\n'))
{
Match match = Regex.Match(line,
@"/^INVOICE=(\d+):STATUS=(PAID|DENIED|EXPIRED)(:PAY_TIME=(\d+):STAN=(\d+):BCODE=([0-9a-zA-Z]+))?$/");
if (match.Success)
{
string invoice = match.Groups[1].Value;
string status = match.Groups[2].Value;
paymentHelper.LogPayment(Convert.ToInt32(invoice), this.GetType().Name,
status == "PAID" ? PaymentStatus.Completed : PaymentStatus.Failed,
null, line);
response += "INVOICE=" + invoice + ":STATUS=OK\n";
}
}
result.Response = response;
}
else
{
result.Response = "ERR=Not valid CHECKSUM\n";
}
return(result);
}
public IpnResult Ipn(HttpRequestBase request)
{
var result = new IpnResult();
string postUrl = settings.TestMode
? "https://www.sandbox.paypal.com/cgi-bin/webscr"
: "https://www.paypal.com/cgi-bin/webscr";
//Post back to either sandbox or live
var 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(request.ContentLength);
string strRequest = Encoding.ASCII.GetString(param);
string strResponse_copy = strRequest; //Save a copy of the initial info sent by PayPal
strRequest += "&cmd=_notify-validate";
req.ContentLength = strRequest.Length;
//for proxy
//WebProxy proxy = new WebProxy(new Uri("http://url:port#"));
//req.Proxy = proxy;
//Send the request to PayPal and get the response
var streamOut = new StreamWriter(req.GetRequestStream(), Encoding.ASCII);
streamOut.Write(strRequest);
streamOut.Close();
var streamIn = new StreamReader(req.GetResponse().GetResponseStream());
string strResponse = streamIn.ReadToEnd();
streamIn.Close();
if (strResponse == "VERIFIED")
{
//check the payment_status is Completed
//check that txn_id has not been previously processed
//check that receiver_email is your Primary PayPal email
//check that payment_amount/payment_currency are correct
//process payment
// pull the values passed on the initial message from PayPal
NameValueCollection args = HttpUtility.ParseQueryString(strResponse_copy);
var orderId = Convert.ToInt32(args["custom"]);
var amount = Convert.ToDecimal(args["mc_gross"]);
PaymentStatus status;
string paymentNotes;
if (args["receiver_email"] != settings.Email)
{
paymentNotes = string.Format("PayPal recipient expected was {0} but received {1}",
settings.Email, args["receiver_email"]);
status = PaymentStatus.ManualReview;
}
else if (args["test_ipn"] == "1" && !settings.TestMode)
{
paymentNotes = string.Format("PayPal IPN was in test mode but site is not");
status = PaymentStatus.Failed;
}
else if (args["mc_currency"] != settingService.Get<string>(SettingField.CurrencyCode))
{
paymentNotes = string.Format("Expected currency {0} but received {1}",
settingService.Get<string>(SettingField.CurrencyCode), args["mc_currency"]);
status = PaymentStatus.Failed;
}
else
{
paymentNotes = strResponse_copy;
switch (args["payment_status"])
{
case "Canceled_Reversal":
case "Completed":
case "Processed":
status = PaymentStatus.Completed;
break;
case "Denied":
case "Voided":
case "Expired":
case "Failed":
status = PaymentStatus.Failed;
break;
case "Refunded":
case "Reversed":
status = PaymentStatus.Refunded;
break;
case "Pending":
status = PaymentStatus.ManualReview;
break;
default:
status = PaymentStatus.Failed;
break;
}
}
paymentHelper.LogPayment(orderId, GetType().Name, status, amount, paymentNotes);
}
else if (strResponse == "INVALID")
{
//log for manual investigation
ErrorLog.GetDefault(HttpContext.Current).Log(
new Error(new Exception("PayPal INVALID: " + strResponse_copy)));
}
else
{
//log response/ipn data for manual investigation
ErrorLog.GetDefault(HttpContext.Current).Log(
new Error(new Exception("PayPal " + strResponse + ": " + strResponse_copy)));
}
return result;
}
public IpnResult Ipn(HttpRequestBase request)
{
var result = new IpnResult();
string postUrl = settings.TestMode
? "https://www.sandbox.paypal.com/cgi-bin/webscr"
: "https://www.paypal.com/cgi-bin/webscr";
//Post back to either sandbox or live
var 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(request.ContentLength);
string strRequest = Encoding.ASCII.GetString(param);
string strResponse_copy = strRequest; //Save a copy of the initial info sent by PayPal
strRequest += "&cmd=_notify-validate";
req.ContentLength = strRequest.Length;
//for proxy
//WebProxy proxy = new WebProxy(new Uri("http://url:port#"));
//req.Proxy = proxy;
//Send the request to PayPal and get the response
var streamOut = new StreamWriter(req.GetRequestStream(), Encoding.ASCII);
streamOut.Write(strRequest);
streamOut.Close();
var streamIn = new StreamReader(req.GetResponse().GetResponseStream());
string strResponse = streamIn.ReadToEnd();
streamIn.Close();
if (strResponse == "VERIFIED")
{
//check the payment_status is Completed
//check that txn_id has not been previously processed
//check that receiver_email is your Primary PayPal email
//check that payment_amount/payment_currency are correct
//process payment
// pull the values passed on the initial message from PayPal
NameValueCollection args = HttpUtility.ParseQueryString(strResponse_copy);
var orderId = Convert.ToInt32(args["custom"]);
var amount = Convert.ToDecimal(args["mc_gross"]);
PaymentStatus status;
string paymentNotes;
if (args["receiver_email"] != settings.Email)
{
paymentNotes = string.Format("PayPal recipient expected was {0} but received {1}",
settings.Email, args["receiver_email"]);
status = PaymentStatus.ManualReview;
}
else if (args["test_ipn"] == "1" && !settings.TestMode)
{
paymentNotes = string.Format("PayPal IPN was in test mode but site is not");
status = PaymentStatus.Failed;
}
else if (args["mc_currency"] != settingService.Get <string>(SettingField.CurrencyCode))
{
paymentNotes = string.Format("Expected currency {0} but received {1}",
settingService.Get <string>(SettingField.CurrencyCode), args["mc_currency"]);
status = PaymentStatus.Failed;
}
else
{
paymentNotes = strResponse_copy;
switch (args["payment_status"])
{
case "Canceled_Reversal":
case "Completed":
case "Processed":
status = PaymentStatus.Completed;
break;
case "Denied":
case "Voided":
case "Expired":
case "Failed":
status = PaymentStatus.Failed;
break;
case "Refunded":
case "Reversed":
status = PaymentStatus.Refunded;
break;
case "Pending":
status = PaymentStatus.ManualReview;
break;
default:
status = PaymentStatus.Failed;
break;
}
}
paymentHelper.LogPayment(orderId, GetType().Name, status, amount, paymentNotes);
}
else if (strResponse == "INVALID")
{
//log for manual investigation
ErrorLog.GetDefault(HttpContext.Current).Log(
new Error(new Exception("PayPal INVALID: " + strResponse_copy)));
}
else
{
//log response/ipn data for manual investigation
ErrorLog.GetDefault(HttpContext.Current).Log(
new Error(new Exception("PayPal " + strResponse + ": " + strResponse_copy)));
}
return(result);
}
