/// <summary>
/// We display reader properties available via CardTerminal class. Note that availability
/// of these properties depends on the terminal.
/// </summary>
/// <param name="aCardSlot">current slot, activated and with powered card</param>
public void DisplayReaderProperties(CardTerminalSlot aCardSlot)
{
string defaultInfo = "not available";
// we now have a reader and a powered card
DisplayText("*** Card terminal info ***");
string manufacturerName = aCardSlot.CardTerminal.ManufacturerName;
if (manufacturerName == null)
{
manufacturerName = defaultInfo;
}
DisplayText("manufacturer: " + manufacturerName);
string productName = aCardSlot.CardTerminal.ProductName;
if (productName == null)
{
productName = defaultInfo;
}
DisplayText("name: " + productName);
string productVersion = aCardSlot.CardTerminal.ProductVersion;
if (productVersion == null)
{
productVersion = defaultInfo;
}
DisplayText("version: " + productVersion);
string productSerialNumber = aCardSlot.CardTerminal.ProductSerialNumber;
if (productSerialNumber == null)
{
productSerialNumber = defaultInfo;
}
DisplayText("serial number: " + productSerialNumber);
string productAdditionalInfo = aCardSlot.CardTerminal.ProductAdditionalInfo;
if (productAdditionalInfo == null)
{
productAdditionalInfo = defaultInfo;
}
DisplayText("additional info: " + productAdditionalInfo);
string physicalConnection = aCardSlot.CardTerminal.PhysicalConnection;
if (physicalConnection == null)
{
physicalConnection = defaultInfo;
}
DisplayText("physical connection: " + physicalConnection);
DisplayText("*** End of card terminal info ***");
}
/// <summary>
///
/// </summary>
/// <param name="aCardSlot"></param>
public void AnalyzeCard(CardTerminalSlot aCardSlot)
{
// Acquire any processor card (T=0 or T=1) that may be present in the given card
// terminal slot
string readerName = aCardSlot.CardTerminalName;
CardActivationResult nActivationResult;
DisplayText("Reader Name: " + readerName);
//aCardSlot.CardTerminal.Config
CardHandle aCard = aCardSlot.AcquireCard((CardTypes.T0 | CardTypes.T1), out nActivationResult);
if (nActivationResult != CardActivationResult.Success)
{
Debug.Assert(aCard == null);
switch (nActivationResult)
{
case CardActivationResult.NoCard:
m_aPromptLabel.Text = readerName + ": Please insert card ...";
break;
case CardActivationResult.UnresponsiveCard:
m_aPromptLabel.Text = readerName + ": Unresponsive card.";
break;
case CardActivationResult.InUse:
m_aPromptLabel.Text = readerName + ": Card in use";
break;
default:
m_aPromptLabel.Text = readerName + ": Can't power up card!";
break;
}
return;
}
m_aPromptLabel.Text = aCardSlot.CardTerminalName + ": Found card";
DisplayText("Found card in reader " + aCardSlot.CardTerminalName);
DisplayReaderProperties(aCardSlot);
aCardSlot.BeginTransaction();
try
// We are doing a few things here that any card system should support.
// Note that the CardHandle represents the combination of card terminal and
// powered-up card.
{
// =========================== ATR DETECTION ======================================
// Every card accessed through PC/SC must return an Answer To Reset (ATR).
// So let's see what we've got here.
byte[] atr = aCard.GetATR();
if (atr.Length == 0)
{
throw new Exception("Invalid ATR");
}
DisplayText("ATR: " + CardHex.FromByteArray(atr, 0, atr.Length));
// ================================================================================
// Go a little deeper: is this a contact or contactless card system we are dealing with?
CardHelper cardHelper = new CardHelper(aCard);
DisplayText(cardHelper.cardInfo);
if (cardHelper.isContactless)
{
// =========================== APDU EXCHANGE ==================================
// Now we can try to get a unique identifier (UID). Any contactless card with a
// PC/C 2.01 compliant card reader should be able to generate a UID. But never mind,
// even if this fails it still shows how to create a command APDU with our SmartCardAPI
// frameqwork and get a response APDU back from a card.
//
// Known issues:
// SendCommand with CLA=0xFF can cause an exception with some smart card systems,
// triggered by an "Unknown Error" (-2146435025) on PC/SC level.
// Therefore this code should only be run if we are accessing a contactless reader
// interface that is PC/SC 2.01 compliant
// ============================================================================
byte CL_CLA = 0xFF;
byte CL_INS_GET_UID = 0xCA;
byte P1 = 0;
byte P2 = 0;
CardCommandAPDU aCmdAPDU = new CardCommandAPDU(CL_CLA, CL_INS_GET_UID, P1, P2, 256);
CardResponseAPDU aRespAPDU;
aRespAPDU = aCard.SendCommand(aCmdAPDU);
if (!aRespAPDU.IsSuccessful)
{
DisplayText("WARNING: can't get a UID - this might be a contact card.");
}
else
{
byte[] uidWithSw12 = aRespAPDU.GenerateBytes();
if (uidWithSw12.Length < 2)
{
throw new Exception("Invalid UID");
}
var uid = CardHex.FromByteArray(uidWithSw12, 0, uidWithSw12.Length - 2);
DisplayText("UID: " + uid);
if (uid.Length > 0)
{
_reader.SendRFID(uid);
}
}
}
aCardSlot.EndTransaction();
}
catch (Exception x)
{
Trace.WriteLine(x.ToString());
DisplayText(x.ToString());
m_aPromptLabel.Text = "Card access error";
}
finally
{
aCard.Dispose(); // release card handle
}
}
