public TransactionRequest(NameValueCollection requestForm, DIBSConfiguration dibsConfiguration)
{
_dibsConfiguration = dibsConfiguration;
_keyPairs = GetRequestKeyPairs(requestForm);
_hmacKey = requestForm[HmacParamName];
OrderId = GetKeyPairValue(OrderIdParamName);
TransactionId = GetKeyPairValue(TransactionParamName);
}
public DIBSRequestHelper(
IOrderNumberGenerator orderNumberGenerator,
SiteContext siteContext,
DIBSConfiguration dibsConfiguration)
{
_orderNumberGenerator = orderNumberGenerator;
_siteContext = siteContext;
DIBSConfiguration = dibsConfiguration;
}
public DIBSPaymentMethod(IOrderGroupFactory orderGroupFactory)
{
_orderGroupFactory = orderGroupFactory;
_paymentMethod = DIBSConfiguration.GetDIBSPaymentMethod()?.PaymentMethod?.FirstOrDefault();
if (_paymentMethod == null)
{
return;
}
PaymentMethodId = _paymentMethod.PaymentMethodId;
SystemKeyword = _paymentMethod.SystemKeyword;
Name = _paymentMethod.Name;
Description = _paymentMethod.Description;
}
/// <summary>
/// Handles the Load event of the Page control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void Page_Load(object sender, System.EventArgs e)
{
if (Request.Form["paymentprovider"] != null && Request.Form["paymentprovider"].Equals(DIBSConfiguration.DIBSSystemName))
{
ErrorManager.GenerateError(Utilities.Translate("CancelMessage"));
}
if (!IsPostBack)
{
var dibsConfiguration = new DIBSConfiguration();
if (string.IsNullOrEmpty(dibsConfiguration.ProcessingUrl) ||
string.IsNullOrEmpty(dibsConfiguration.HMACKey))
{
ConfigMessage.Text = Utilities.Translate("DIBSSettingsError");
}
}
}
private static string GetHMACCalculation(DIBSConfiguration paymentConfiguration, string messageString)
{
// reference: https://tech.dibspayment.com/batch/d2integratedpwapihmac
//Decoding the secret Hex encoded key and getting the bytes for MAC calculation
var hmacKeyBytes = new byte[paymentConfiguration.HMACKey.Length / 2];
for (var i = 0; i < hmacKeyBytes.Length; i++)
{
hmacKeyBytes[i] = byte.Parse(paymentConfiguration.HMACKey.Substring(i * 2, 2), NumberStyles.HexNumber);
}
var msgBytes = Encoding.UTF8.GetBytes(messageString);
//Calculate MAC key
var hash = new HMACSHA256(hmacKeyBytes);
var macBytes = hash.ComputeHash(msgBytes);
return(BitConverter.ToString(macBytes).Replace("-", string.Empty).ToLower());
}
private PaymentMethodDto.PaymentMethodParameterRow GetParameterByName(string name)
{
return(DIBSConfiguration.GetParameterByName(_paymentMethodDto, name));
}
protected virtual string GetMACRequest(DIBSConfiguration configuration, Dictionary <string, object> message) => Utilities.GetMACRequest(configuration, message);
/// <summary>
/// Gets the MD5 key used to send to DIBS in authorization step.
/// </summary>
/// <param name="paymentConfiguration">The DIBS payment configuration.</param>
/// <param name="keyPairs">The key pairs.</param>
public static string GetMACRequest(DIBSConfiguration paymentConfiguration, Dictionary <string, object> keyPairs)
{
var messageString = string.Join("&", keyPairs.Select(kp => $"{kp.Key}={kp.Value}"));
return(GetHMACCalculation(paymentConfiguration, messageString));
}
