CCAvenue Gateway Integration kit for ios Application

Question

Hi,
I have developed an application which needs payment gateway. I have already worked on \"Paypal\". It was successful and now i need to integrate another payment gate

Answer 1

For anyone who needs an answer for Swift 3.2 here is the code. Took me a while to convert to it. But here you go. Before that let me explain in case things are still unclear.

(1) you place your GetRSA file on the server and then copy and paste that link in your app as "rsaKeyUrl".

(2) The "getRsaKeyForCCAvenue()" function makes a call to that file placed on the server, the IP of which has to be whitelisted beforehand.

(3) The "getRSA" file makes a request to CCavenue on the link that is already in it.(This is important as CCAvenue only accepts requests from whitelisted IP's and this enables all the requests to be routed from just one IP.

(4) CCAvenue checks the details and processes the request and sends the response and redirects to the payment page if everything checks.

(5) The redirection URL shall be the link of the "ccavResponseHandler" file which has your access code and translates the response.

THE CODE IN SWIFT 3.2

1) Get RSA Key

func getRsaKeyForCCAvenue() -> String {

    //Getting RSA Key
    let rsaKeyDataStr = "access_code=\(accessCode)&order_id=\(orderId)"

    let requestData = rsaKeyDataStr.data(using: String.Encoding.utf8, allowLossyConversion: false)

    var request = URLRequest(url: URL(string: rsaKeyUrl)!)


    let rsaRequest =  NSMutableURLRequest(url: URL(string: rsaKeyUrl)!)

    rsaRequest .setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")

    rsaRequest.httpMethod = "POST"

    rsaRequest.httpBody = requestData

    let rsaKeyData: NSData? = try? NSURLConnection.sendSynchronousRequest(rsaRequest as URLRequest, returning: nil) as NSData

    var rsaKey =  NSString(data: rsaKeyData! as Data, encoding: String.Encoding.ascii.rawValue)
    rsaKey = rsaKey?.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines) as NSString?


    //   rsaKey = rsaKey?.trimmingCharacters(in: NSCharacterSet.newlines) as? NSString

    rsaKey = "-----BEGIN PUBLIC KEY-----\n\(rsaKey!)\n-----END PUBLIC KEY-----\n" as NSString
    print(rsaKey)
    return rsaKey! as String
}

2) Code after super.viewDidLoad()

    let rsaKey = getRsaKeyForCCAvenue()

    //Encrypting Card Details
    let myRequestString = "amount=\(VQ_MOUNT)¤cy=\(currency)"

    let ccTool = CCTool()

    var encVal :NSString = ccTool.encryptRSA(myRequestString, key: (rsaKey as NSString) as String!) as NSString

    let charset : String = "!*'();:@&=+$,/?%#[]"

    encVal = CFURLCreateStringByAddingPercentEscapes(nil, encVal as CFString, nil, (charset as CFString), CFStringBuiltInEncodings.UTF8.rawValue) as String as NSString


    //Preparing for a webview call
    let urlAsString = TRANS_URL

    var encryptedStr = "merchant_id=\(merchantId)&order_id=\(orderId)&redirect_url=\(redirectUrl)&cancel_url=\(cancelUrl)&enc_val=\(encVal)&access_code=\(accessCode)"

    let myRequestData = NSData.init(bytes: encryptedStr.cString(using: .utf8), length: encryptedStr.characters.count) as Data

    let request = NSMutableURLRequest(url: URL(string: urlAsString)!)


    request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")

    request.setValue(TRANS_URL, forHTTPHeaderField: "Referer")

    request.httpMethod = "POST"

    request.httpBody = myRequestData

    viewWeb.loadRequest(request as URLRequest)

3) Finally the webViewDidFinishLoad() implementation

    func webViewDidFinishLoad(_ webView: UIWebView) {
    let webString = webView.request?.url?.absoluteString
    if ((webString as NSString?)?.range(of: "/ccavResponseHandler.jsp"))?.location != NSNotFound {
        let html: String? = webView.stringByEvaluatingJavaScript(from: "document.documentElement.outerHTML")
        var transStatus = "Not Known"
        if (((html as NSString?)?.range(of: "Aborted"))?.location != NSNotFound) || (((html as NSString?)?.range(of: "Cancel"))?.location != NSNotFound) {
            transStatus = "Transaction Cancelled"
        }
        else if (((html as NSString?)?.range(of: "Success"))?.location != NSNotFound) {
            transStatus = "Transaction Successful"
        }
        else if (((html as NSString?)?.range(of: "Fail"))?.location != NSNotFound) {
            transStatus = "Transaction Failed"
        }
        var controller = storyboard?.instantiateViewController(withIdentifier: "CCResultViewController") as? CCResultViewController
        controller?.transStatus = transStatus
        controller?.modalTransitionStyle = .crossDissolve
        present(controller ?? UIViewController(), animated: true)
    }else {
        print("Something went wrong...")
    }
}