// Used internally
/// <summary>
/// Sends reading command using ABECS when card have a chip.
/// </summary>
/// <param name="pinpadCommunication">Pinpad communication, through which the communication with the pinpad is made.</param>
/// <param name="amount">Transaction amount.</param>
/// <returns>ABECS GOC command response.</returns>
private GocResponse SendGoc(IPinpadCommunication pinpadCommunication, decimal amount)
{
GocRequest request = new GocRequest();
request.GOC_AMOUNT.Value = Convert.ToInt64(amount * 100);
request.GOC_CASHBACK.Value = 0;
request.GOC_EXCLIST.Value = false;
request.GOC_CONNECT.Value = true;
request.GOC_METHOD.Value = new CryptographyMethod(KeyManagementMode.DerivedUniqueKeyPerTransaction,
CryptographyMode.TripleDataEncryptionStandard);
request.GOC_KEYIDX.Value = (int)StoneIndexCode.EncryptionKey;
request.GOC_WKENC.Value = new HexadecimalData("00000000000000000000000000000000");
request.GOC_RISKMAN.Value = false;
request.GOC_FLRLIMIT.Value = new HexadecimalData("00000000");
request.GOC_TPBRS.Value = 0;
request.GOC_TVBRS.Value = new HexadecimalData("00000000");
request.GOC_MTPBRS.Value = 0;
request.GOC_TAGS1.Value = new HexadecimalData(EmvTag.GetEmvTagsRequired());
request.GOC_TAGS2.Value = new HexadecimalData(string.Empty);
GocResponse response = pinpadCommunication.SendRequestAndReceiveResponse <GocResponse>(request);
return(response);
}
// Methods
/// <summary>
/// Reads the card.
/// </summary>
/// <param name="communication">Pinpad facade, responsible for pinpad communication and plus.</param>
/// <param name="amount">Transaction amount.</param>
/// <param name="pin">Pin information read.</param>
/// <returns>Operation status.</returns>
internal ResponseStatus Read(IPinpadCommunication communication, decimal amount, out Pin pin)
{
pin = null;
// Validating data
this.Validate(communication, amount);
// Using ABECS GOC command to communicate with pinpad.
GocResponse commandResponse = this.SendGoc(communication, amount);
if (commandResponse == null)
{
if (communication.Ping() == true)
{
// Pinpad is connected. Time out.
return(ResponseStatus.TimeOut);
}
else
{
// Pinpad loss conection.
throw new PinpadDisconnectedException("Não foi possível ler a senha.\nVerifique a conexão com o pinpad.");
}
}
// Saving command response status:
AbecsResponseStatus legacyStatus = commandResponse.RSP_STAT.Value;
ResponseStatus status = ResponseStatusMapper.MapLegacyResponseStatus(legacyStatus);
if (status != ResponseStatus.Ok)
{
return(status);
}
//if (status == ResponseStatus.OperationCancelled) { return status; }
pin = new Pin();
pin.ApplicationCryptogram = this.GetValueFromEmvData(
commandResponse.GOC_EMVDAT.Value.DataString, EmvTagCode.ApplicationCryptogram);
pin.CardholderNameExtended = this.GetValueFromEmvData(
commandResponse.GOC_EMVDAT.Value.DataString, EmvTagCode.CardholderNameExtended);
// Whether is a pin online authentication or not.
if (commandResponse.GOC_PINONL.Value.HasValue == true)
{
pin.IsOnline = commandResponse.GOC_PINONL.Value.Value;
}
// If EMV data war not returned from the command:
if (commandResponse.GOC_EMVDAT.HasValue == false)
{
return(ResponseStatus.PinBusy);
}
// Savind EMV data:
if (commandResponse.GOC_EMVDAT.Value != null)
{
pin.EmvData = commandResponse.GOC_EMVDAT.Value.DataString;
}
if (pin.IsOnline == true && commandResponse.GOC_DECISION.Value == OfflineTransactionStatus.RequiresAuthorization)
{
// If it's an online transaction, that is, needs pin and ksn emv validation:
pin.PinBlock = commandResponse.GOC_PINBLK.Value.DataString;
pin.KeySerialNumber = commandResponse.GOC_KSN.Value.DataString;
}
// Returns read pin block.
return(status);
}
