/// <summary>
/// Enables processing of HTTP Web requests by a custom HttpHandler that implements the <see cref="IHttpHandler"/> interface.
/// </summary>
/// <param name="context">
/// An System.Web.HttpContext object that provides references to the intrinsic
/// server objects (for example, Request, Response, Session, and Server) used
/// to service HTTP requests.
/// </param>
public void ProcessRequest(HttpContext context)
{
string token = string.Empty;
try
{
token = context.Request.Cookies["iapplypagetoken"].Value;
string formId = context.Request.QueryString["formId"];
string applicationId = context.Request.QueryString["applicationId"];
SessionData sessionData = SessionDataSerializer.Deserialize(Global.Crypto, token);
ApplicationManager applicationManager = Global.DependencyInjectionContainer.Resolve<ApplicationManager>();
TransactionVariableFactory factory = Global.DependencyInjectionContainer.Resolve<TransactionVariableFactory>(formId);
ApplicationPaymentManager manager = Global.DependencyInjectionContainer.Resolve<ApplicationPaymentManager>();
RetrieveApplicationResponse appResponse = applicationManager.GetApplicationSecure(sessionData, applicationId);
Application application = appResponse.Application;
ApplicationData applicationData = application == null ? null : application.ApplicationData;
TransactionVariables variables = factory.Create(formId, applicationId, applicationData);
SecurePayTransactionResponse response = new SecurePayTransactionResponse();
HttpRequestToTransactionResponseConverter converter = new HttpRequestToTransactionResponseConverter();
converter.Convert(context.Request, response, variables);
manager.SavePaymentResponse(applicationId, response);
if (response.TransactionResult != SecurePayTransactionResult.Approved)
{
string url = string.Format("{0}?0={1}&1={2}&2={3}", BASE_URL, PAYMENT_PROVIDER_KEY, applicationId, response.ResponseText);
context.Response.Redirect(url, true);
}
context.Response.ContentEncoding = Encoding.UTF8;
context.Response.ContentType = "text/html";
context.Response.Write(string.Format("<p class=\"receipt-text\">Thank you for your payment, your receipt number is <strong>{0}</strong></p>", context.Request["txnid"]));
}
catch (Exception e)
{
e.Data.Add("token", token);
bool rethrow = ExceptionPolicy.HandleException(e, "Default");
if (rethrow)
{
throw;
}
context.Response.ContentEncoding = Encoding.UTF8;
context.Response.ContentType = "text/html";
context.Response.Write("<p class=\"receipt-text\">There was an error processing your payment. Please contact the system administrator.</p>");
}
}
/// <summary>
/// Sets the properties of a <see cref="SecurePayTransactionResponse"/> object
/// based on the parameters of a <see cref="HttpRequest"/> object.
/// </summary>
/// <param name="httpRequest">A <see cref="HttpRequest"/> object to read from.</param>
/// <param name="securePayResponse">A <see cref="SecurePayTransactionResponse"/> object to write to.</param>
/// <param name="variables">The transaction variables.</param>
/// <exception cref="SecurityException">
/// The returned fingerprint value does not match the expected value.
/// </exception>
public void Convert(HttpRequest httpRequest, SecurePayTransactionResponse securePayResponse, TransactionVariables variables)
{
string merchantId = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.MERCHANT_ID);
string referenceId = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.REFERENCE_ID);
string timestamp = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.TIMESTAMP);
string summaryCode = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.SUMMARY_CODE);
string fingerprint = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.FINGERPRINT);
string localFingerprint = string.Format(
"{0}|{1}|{2}|{3}|{4}|{5}",
merchantId,
variables.MerchantPassword,
referenceId,
variables.TransactionAmount.ToString("F2"),
timestamp,
summaryCode).ToSha1Hash();
if (!localFingerprint.Equals(fingerprint))
{
throw new SecurityException("Invalid fingerprint.");
}
securePayResponse.TransactionResult = !string.IsNullOrEmpty(summaryCode) ? (SecurePayTransactionResult)Enum.Parse(typeof(SecurePayTransactionResult), summaryCode) : SecurePayTransactionResult.Unknown;
securePayResponse.SummaryCode = summaryCode;
securePayResponse.ResponseCode = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.RESPONSE_CODE);
securePayResponse.ResponseText = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.RESPONSE_TEXT);
securePayResponse.ReferenceId = referenceId;
securePayResponse.TransactionId = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.TRANSACTION_ID);
securePayResponse.Amount = variables.TransactionAmount;
string settlementDatestamp = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.SETTLEMENT_DATE);
if (!string.IsNullOrEmpty(settlementDatestamp))
{
securePayResponse.SettlementDate = new DateTime(
System.Convert.ToInt32(settlementDatestamp.Substring(0, 4)),
System.Convert.ToInt32(settlementDatestamp.Substring(4, 2)),
System.Convert.ToInt32(settlementDatestamp.Substring(6, 2)));
}
securePayResponse.PreAuthorisationId = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.PREAUTHORISATION_ID);
securePayResponse.ExpiryDate = this.RequestParamNullGuard(httpRequest, SecurePayConstants.Result.EXPIRY_DATE);
securePayResponse.MerchantId = merchantId;
securePayResponse.Timestamp = timestamp;
}
/// <summary>
/// Converts a <see cref="MongoDB.Bson.BsonDocument" /> to a <see cref="SecurePayTransactionResponse" />.
/// </summary>
/// <param name="bsonResponse">A <see cref="MongoDB.Bson.BsonDocument" />.</param>
/// <returns>A new <see cref="SecurePayTransactionResponse"/> which is the result of converting the <paramref name="bsonResponse"/>.</returns>
private SecurePayTransactionResponse BsonDocumentToTransactionResponse(BsonDocument bsonResponse)
{
SecurePayTransactionResponse secureResponse = new SecurePayTransactionResponse
{
TransactionId = bsonResponse["TransactionId"].AsString,
TransactionResult = (SecurePayTransactionResult)Enum.Parse(typeof(SecurePayTransactionResult), bsonResponse["TransactionResult"].AsString),
SummaryCode = bsonResponse["SummaryCode"].AsString,
ResponseCode = bsonResponse["ResponseCode"].AsString,
ResponseText = bsonResponse["ResponseText"].AsString,
ReferenceId = bsonResponse["ReferenceId"].AsString,
Amount = bsonResponse["Amount"].AsDouble,
PreAuthorisationId = bsonResponse["PreAuthorisationId"].AsString,
ExpiryDate = bsonResponse["ExpiryDate"].AsString,
MerchantId = bsonResponse["MerchantId"].AsString,
Timestamp = bsonResponse["Timestamp"].AsString
};
if (!bsonResponse["SettlementDate"].IsBsonNull)
{
secureResponse.SettlementDate = bsonResponse["SettlementDate"].ToUniversalTime();
}
return secureResponse;
}
