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Developing Custom Payment Gateway

Developing Custom Payment Gateway. 4/19/2012 Miro Remias, Solution Architect. Built-in Payment Gateways. PayPal, Authorize.NET, Customer Credit , ? Custom Payment Gateway , Market Place : E-way , PayPal Payflow Pro ,. Agenda. SQL Database. Save order. Update result. 2.

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Developing Custom Payment Gateway

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  1. Developing Custom Payment Gateway 4/19/2012 Miro Remias, Solution Architect

  2. Built-in Payment Gateways PayPal, Authorize.NET, Customer Credit, ? Custom Payment Gateway, Market Place: • E-way, • PayPal Payflow Pro,

  3. Agenda SQL Database Save order Update result 2 Payment provider Authorize.NET A) Checkout steps HTTP(S) POST B) Redirect Kentico PayPal Buyer(s) 1 Redirect (optional) Thank you page Payment Notification 2 Update result Confirmation (optional) 3 PN page • Payment gateway class, payment gateway form (1) • Payment result (2) • Payment Notification (3) • Security (4) • Real world example - DEMO

  4. (1) Payment Gateway Class APICMS.EcommerceProvider.CMSPaymentGatewayProvider ShoppingCartControl (ShoppingCart) ShoppingCartInfoObj (ShoppingCartInfo) OrderId (int) PaymentResult (PaymentResultInfo) IsPaymentCompleted (bool) PaymentResult.PaymentIsCompleted AddCustomData() - CMSPaymentGatewayFormcontrol is added to the payment data container and its data are loaded. RemoveCustomData() - All controls from payment data container are removed. ValidateCustomData() -CMSPaymentGatewayFormcontrol data are validated. ProcessCustomData() -CMSPaymentGatewayFormdata are processed. ShoppingCartInfoObj.PaymentGatewayCustomData (Hashtable) ProcessPayment() - Override this method to process payment by your payment processor. GetPaymentDataForm() - Override this method to get your own payment gateway form. (static)GetPaymentGatewayProvider(intpaymentOptionId) – Loads payment gateway. UpdateOrderPaymentResult() - Updates order payment result in database. OrderId PaymentResult

  5. (1) Payment Gateway Form APICMS.EcommerceProvider.CMSPaymentGatewayForm ShoppingCartControl (ShoppingCart) ShoppingCartInfoObj (ShoppingCartInfo) PaymentGatewayCustomData(Hashtable) LoadData() - Initializes form controls with customer payment data CMSPaymentGatewayProvider.AddCustomData() - ShoppingCartPaymentGateway ValidateData() - Validates form data and returns error message if some error occurs CMSPaymentGatewayProvider.ValidateCustomData() - ShoppingCartPaymentGateway ProcessData() - Process form data and returns error message if some error occurs CMSPaymentGatewayProvider.ProcessCustomData() - ShoppingCartPaymentGateway UI

  6. (1) I Don’t Need Payment Gateway Form ShoppingCartPaymentGateway API PaymentOptionInfopoi = PaymentOptionInfoProvider.GetPaymentOptionInfo(this.ShoppingCartInfoObj.ShoppingCartPaymentOptionID); if (poi != null && poi.PaymentOptionClassName.ToLower().Equals("worldpayprovider")) { this.ButtonNextClickAction(); } else { LoadData(); }

  7. (2) Working With Payment Result API CMS.Ecommerce.OrderInfo OrderPaymentResult CMS.Ecommerce.PaymentResultInfo PaymentDate PaymentMethodID PaymentMethodName PaymentIsCompleted PaymentStatusName PaymentStatusCode PaymentTransactionID LoadPaymentResultXml(string xml) CMS.Ecommerce.OrderInfo OrderIsPaid Note: You don’t need to specify both value and item text if they are identical ((1) item text, (2) item value) <result> <item name="date" header="{$PaymentGateway.Result.Date$}" value="4/12/2012 8:30:19 PM" /> <item name="method"header="{$PaymentGateway.Result.PaymentMethod$}" text="Word Pay" value="5" /> <item name="completed" header="{$PaymentGateway.Result.IsCompleted$}" value="1" text="{$PaymentGateway.Result.PaymentCompleted$}" /> <item name="transactionid" header="{$PaymentGateway.Result.TransactionID$}" value="6dc9af1c.." /> <item name="description" header="{$PaymentGateway.Result.Description$}" /> <item name="verified" header="{$PaymentGateway.WorldPayResult.Verification$}" value="1" text="{$PaymentGateway.WorldPayResult.Verification.Verified$}" /> </result> // Create/address new/existing PaymentResultItemInfo PaymentResultItemInfoitemObj = EnsurePaymentResultItemInfo("verified", HEADER_VERIFIED); // PaymentResultItemInfoitemObj = GetPaymentResultItemInfo("verified"); if(itemObj != null) { // item.Name // item.Header item.Value = ""; item.Text = ""; } // Save new item SetPaymentResultItemInfo(item); Database COM_Order [Table] OrderPaymentResult [Column] COM_Order [Table] OrderIsPaid [Column](new from version 6.0)

  8. (3) Payment Notification • Physical page (.aspx) vs. virtual page (served by Kentico), • PN page is not displaying anything - it should only process the received data, • Common location: ~\CMSModules\Ecommerce\CMSPages\ • PN page needs to be accessible by public user, • Compare order data (COM_Order) and secret (e.g. from settings) with payment gateway response/result data, • Confirm payment with payment gateway (optional), • Log any exceptions, error or suspicious behavior into Event log, • Update order payment result, • Confirmation e-mails are automatically sent, API CMS.EcommerceProvider.CMSPaymentGatewayProvider OrderId PaymentResult UpdateOrderPaymentResult() intorderID = 5; // from response intpaymentOptionID = 6; // from order (based on orderID) // Load payment provider CMSPaymentGatewayProvider provider = (WorldPayProvider)CMSPaymentGatewayProvider.GetPaymentGatewayProvider(paymentOptionID); provider.OrderId = orderId; // Compare data … // provider.PaymentResult = provider.UpdateOrderPaymentResult();

  9. (4) Security • Consider using SSL (HTTPS) on shopping cart page when collecting sensitive information, • Use POST instead of GET (redirect) if possible, • Redirect/post with SSL (HTTPS), • Do not send sensitive information as part of the URL (querystring), • Verify data/integrity/result/etc. against some secret information, • Don’t save sensitive information in Kentico, • Customer credit card etc., • Use payment gateway security features, • Be paranoid!,

  10. Real World Example [DEMO] • Understand how payment gateway works, • Documentation, • Develop payment gateway class, form, PN page etc. • Take advantage of documentation examples, • Provide your code from App_Code folder, • No need to rebuild your DLL file when upgrading or applying hotfix, • Use custom setting keys, • CMS Site Manager -> Development -> Custom Settings (new from version 6.0), • Register payment option (gateway) in Kentico, • Assign it to some shipping option, • Test and review the security,

  11. Questions ?

  12. Sources E-commerce Guide http://devnet.kentico.com/docs/ecommerceguide/index.html

  13. Contact Miro Remias e-mail: miro@kentico.com consulting: http://www.kentico.com/Support/Consulting/Overview

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