protected void Page_Load(object sender, EventArgs e)
{
// SortedDictionary to hold the form input values in sorted order
var postInput = new SortedDictionary<string, string>();
// log the signature received
Logger.TraceInfo(String.Format("suppliedSignature={0}",
Request.Form["signature"]));
// initialize a string to hold the signature returned from PayNowWidgetUtils.IsValidIPNPost
string postSignature;
// get the name/value pairs input as form data
NameValueCollection postedValues = Request.Form;
string nextKey;
for (int i = 0; i < postedValues.AllKeys.Length; i++)
{
nextKey = postedValues.AllKeys[i];
postInput.Add(nextKey.Trim(), postedValues[i].Trim());
Logger.TraceInfo(String.Format("{0}={1}", nextKey.Trim(), postedValues[i].Trim()));
}
var utils = new AmazonUtils();
var isValidIPN = utils.IsValidIPNPost(postInput, out postSignature);
Logger.TraceInfo(String.Format("calculatedSignature={0}{1}", postSignature, Environment.NewLine));
// Add the state of the IPN (passed/failed) to the log
if (isValidIPN)
{
Logger.TraceInfo("IPN verification passed");
AmazonIPN amazonIPN = AmazonIPN.Create();
if (amazonIPN.Amazon.Status == "PS")
{
amazonIPN.EmailBuyer("Order Received", "Your order has been received and will begin processing shortly.");
LicenseKey.Send(amazonIPN);
}
}
else
{
Logger.TraceInfo("IPN verification failed");
}
Logger.TraceInfo("--End--");
}
protected void Application_Start(object sender, EventArgs e)
{
AmazonUtils amazonUtils = new AmazonUtils(Path.Combine(DataPath, "AmazonIPN.log"));
Application["utils"] = amazonUtils;
}