/// <summary> /// Will try to connect to the _connectedReader, see if there is a card present, and if so try to read the data. /// </summary> /// <returns>Either the error message or data from the card.</returns> public string TryToReadCard() { SCardContext context = new SCardContext(); context.Establish(SCardScope.System); SCardReader reader = new SCardReader(context); SCardError result = SCardError.InternalError; try { result = reader.Connect(_connectedReader, SCardShareMode.Shared, SCardProtocol.Any); } catch (Exception) { context.Dispose(); reader.Dispose(); return(SCardHelper.StringifyError(result)); } string message; if (result == SCardError.Success) { string[] readerNames; SCardProtocol protocol; SCardState state; byte[] atr; result = reader.Status(out readerNames, out state, out protocol, out atr); if (result == SCardError.Success) { message = string.Format("Card detected:{0} Protocol: {1}{0} State: {2}{0} ATR: {3}", Environment.NewLine, protocol, state, BitConverter.ToString(atr ?? new byte[0])); } else { message = string.Format("Unable to read from card.{0}{1}", Environment.NewLine, SCardHelper.StringifyError(result)); } } else { message = string.Format("No card is detected (or reader reserved by another application){0} {1}", Environment.NewLine, SCardHelper.StringifyError(result)); } context.Dispose(); reader.Dispose(); return(message); }
protected virtual void Dispose(bool disposing) { if (Reader != null) { Reader.Dispose(); } }
public void Done() { try { if (sam != null) { if (sam.IsConnected) { sam.Disconnect(SCardReaderDisposition.Unpower); } sam.Dispose(); } if (reader != null) { if (reader.IsConnected) { reader.Disconnect(SCardReaderDisposition.Unpower); } reader.Dispose(); } } catch (Exception E) { // !!! } }
/// <summary> /// Tries to connect to the selected reader. /// </summary> /// <returns>Null if successful. The error message if not.</returns> public string StartMonitoringSelectedReader(string readerName) { if (string.IsNullOrEmpty(readerName)) { return("Reader name is null or empty"); } if (!_readers.Contains(readerName)) { return("The reader does not exist. [Logic Error]"); } _connectedReader = readerName; SCardContext context = new SCardContext(); context.Establish(SCardScope.System); SCardReader reader = new SCardReader(context); SCardError result = SCardError.InternalError; try { result = reader.Connect(readerName, SCardShareMode.Shared, SCardProtocol.Any); } catch (Exception) { context.Dispose(); reader.Dispose(); return(SCardHelper.StringifyError(result)); } _monitor = new SCardMonitor(new SCardContext(), SCardScope.System, true); _monitor.Initialized += (_cardInitalised); _monitor.CardInserted += (_cardInserted); _monitor.CardRemoved += (_cardRemoved); _monitor.Start(readerName); return(null); }
public void Dispose() { reader.Dispose(); ctx.Dispose(); }
/// <summary> /// Will try to connect to _connectedReader and read the card. /// </summary> /// <returns>Either the data from the card or the error message. Or if 'uidOnly' is true, just the UID prefixed with 'UID^' and ending with '^'</returns> public string ReadCard(bool uidOnly = false) { SCardContext context = new SCardContext(); context.Establish(SCardScope.System); SCardReader reader = new SCardReader(context); SCardError result = reader.Connect(_connectedReader, SCardShareMode.Shared, SCardProtocol.Any); if (result != SCardError.Success) { context.Dispose(); reader.Dispose(); return(string.Format("No card is detected (or reader reserved by another application){0}{1}", Environment.NewLine, SCardHelper.StringifyError(result))); } string[] readerNames; SCardProtocol protocol; SCardState state; byte[] atr; result = reader.Status(out readerNames, out state, out protocol, out atr); if (result != SCardError.Success) { context.Dispose(); reader.Dispose(); return(string.Format("Unable to read from card.{0}{1}", Environment.NewLine, SCardHelper.StringifyError(result))); } string message = string.Format("Card detected:{0}Protocol: {1}{0}State: {2}{0}ATR: {3}{0}", Environment.NewLine, protocol, state, BitConverter.ToString(atr ?? new byte[0])); CommandApdu apdu = new CommandApdu(IsoCase.Case2Short, reader.ActiveProtocol) { CLA = 0xFF, Instruction = InstructionCode.GetData, P1 = 0x00, P2 = 0x00, Le = 0 }; result = reader.BeginTransaction(); if (result != SCardError.Success) { context.Dispose(); reader.Dispose(); return(string.Format("Cannot start transaction.{0} {1}", Environment.NewLine, SCardHelper.StringifyError(result))); } SCardPCI recievePci = new SCardPCI(); IntPtr sendPci = SCardPCI.GetPci(reader.ActiveProtocol); byte[] recieveBuffer = new byte[256]; result = reader.Transmit(sendPci, apdu.ToArray(), recievePci, ref recieveBuffer); if (result != SCardError.Success) { context.Dispose(); reader.Dispose(); return(string.Format("Cannot transmit data.{0} {1}", Environment.NewLine, SCardHelper.StringifyError(result))); } var responseApdu = new ResponseApdu(recieveBuffer, IsoCase.Case2Short, reader.ActiveProtocol); message += string.Format("SW1: {1}{0}SW2: {2}{0}", Environment.NewLine, responseApdu.SW1, responseApdu.SW2); string data = responseApdu.HasData ? BitConverter.ToString(responseApdu.GetData()) : "--"; if (uidOnly) { context.Dispose(); reader.Dispose(); return(string.Format("UID^{0}^", data)); } message += string.Format("UID: {0}", data); reader.EndTransaction(SCardReaderDisposition.Leave); reader.Disconnect(SCardReaderDisposition.Reset); context.Dispose(); reader.Dispose(); return(message); }