/// <summary>
/// Wraps the PCSC function
/// LONG SCardConnect(
/// IN SCARDCONTEXT hContext,
/// IN LPCTSTR szReader,
/// IN DWORD dwShareMode,
/// IN DWORD dwPreferredProtocols,
/// OUT LPSCARDHANDLE phCard,
/// OUT LPDWORD pdwActiveProtocol
/// );
/// </summary>
/// <param name="Reader"></param>
/// <param name="ShareMode"></param>
/// <param name="PreferredProtocols"></param>
public override void Connect(string Reader, SHARE ShareMode, PROTOCOL PreferredProtocols)
{
EstablishContext(SCOPE.User);
IntPtr hCard = Marshal.AllocHGlobal(Marshal.SizeOf(cardHandle));
IntPtr pProtocol = Marshal.AllocHGlobal(Marshal.SizeOf(protocol));
lastError = PCSC.SCardConnect(context,
Reader,
(uint)ShareMode,
(uint)PreferredProtocols,
hCard,
pProtocol);
if (lastError != 0)
{
Marshal.FreeHGlobal(hCard);
Marshal.FreeHGlobal(pProtocol);
ThrowSmartcardException("SCardConnect", lastError);
}
cardHandle = Marshal.ReadIntPtr(hCard);
protocol = (uint)Marshal.ReadInt32(pProtocol);
Marshal.FreeHGlobal(hCard);
Marshal.FreeHGlobal(pProtocol);
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardEndTransaction(
/// SCARDHANDLE hCard,
/// DWORD dwDisposition
/// );
/// </summary>
/// <param name="Disposition">A value from DISCONNECT enum</param>
public override void EndTransaction(DISCONNECT Disposition)
{
if (PCSC.SCardIsValidContext(context) == PCSC.SCARD_S_SUCCESS)
{
lastError = PCSC.SCardEndTransaction(cardHandle, (UInt32)Disposition);
ThrowSmartcardException("SCardEndTransaction", lastError);
}
}
/// <summary>
/// Wraps the PSCS function
/// LONG SCardBeginTransaction(
/// SCARDHANDLE hCard
// );
/// </summary>
public override void BeginTransaction()
{
if (PCSC.SCardIsValidContext(context) == PCSC.SCARD_S_SUCCESS)
{
lastError = PCSC.SCardBeginTransaction(cardHandle);
ThrowSmartcardException("SCardBeginTransaction", lastError);
}
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardReleaseContext(
/// IN SCARDCONTEXT hContext
/// );
/// </summary>
public void ReleaseContext()
{
if (PCSC.SCardIsValidContext(context) == PCSC.SCARD_S_SUCCESS)
{
lastError = PCSC.SCardReleaseContext(context);
ThrowSmartcardException("SCardReleaseContext", lastError);
context = IntPtr.Zero;
}
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardReleaseContext(
/// IN SCARDCONTEXT hContext
/// );
/// </summary>
private static void ReleaseContext(IntPtr hContext)
{
if (PCSC.SCardIsValidContext(hContext) == PCSC.SCARD_S_SUCCESS)
{
int lastError = PCSC.SCardReleaseContext(hContext);
ThrowSmartcardException("SCardReleaseContext", lastError);
//Marshal.FreeHGlobal(hContext);
hContext = IntPtr.Zero;
}
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardTransmit(
/// SCARDHANDLE hCard,
/// LPCSCARD_I0_REQUEST pioSendPci,
/// LPCBYTE pbSendBuffer,
/// DWORD cbSendLength,
/// LPSCARD_IO_REQUEST pioRecvPci,
/// LPBYTE pbRecvBuffer,
/// LPDWORD pcbRecvLength
/// );
/// </summary>
/// <param name="ApduCmd">APDUCommand object with the APDU to send to the card</param>
/// <returns>An APDUResponse object with the response from the card</returns>
public override APDUResponse Transmit(APDUCommand ApduCmd)
{
// Must verify that it works with all type of cards
uint outputLength = (ApduCmd.Le == 0)
? APDUResponse.MAX_LENGHT
:(ApduCmd.Le + APDUResponse.SW_LENGTH);
byte[] ApduBuffer = null;
byte[] ApduResponse = new byte[outputLength];
PCSC.SCard_IO_Request ioRequest = new PCSC.SCard_IO_Request();
ioRequest.Protocol = protocol;
ioRequest.PciLength = (uint)Marshal.SizeOf(ioRequest);
// Build the command APDU
if (ApduCmd.Data == null)
{
ApduBuffer = new byte[APDUCommand.APDU_MIN_LENGTH + 1]; // Pass the Le = 0 as well
ApduBuffer[4] = (byte)ApduCmd.Le;
}
else
{
int apduBufferLengh = (ApduCmd.Class == 0x90)
? APDUCommand.APDU_MIN_LENGTH + 1 + ApduCmd.Data.Length + 1
: APDUCommand.APDU_MIN_LENGTH + 1 + ApduCmd.Data.Length;
ApduBuffer = new byte[apduBufferLengh];
Buffer.BlockCopy(ApduCmd.Data, 0, ApduBuffer, APDUCommand.APDU_MIN_LENGTH + 1, ApduCmd.Data.Length);
ApduBuffer[APDUCommand.APDU_MIN_LENGTH] = (byte)ApduCmd.Data.Length;
if (ApduCmd.Class == 0x90)
{
ApduBuffer[apduBufferLengh - 1] = 0;
}
}
ApduBuffer[0] = ApduCmd.Class;
ApduBuffer[1] = ApduCmd.Ins;
ApduBuffer[2] = ApduCmd.P1;
ApduBuffer[3] = ApduCmd.P2;
lastError = PCSC.SCardTransmit(cardHandle, ref ioRequest, ApduBuffer, (uint)ApduBuffer.Length, IntPtr.Zero, ApduResponse, out outputLength);
ThrowSmartcardException("SCardTransmit", lastError);
byte[] responseData = new byte[outputLength];
Buffer.BlockCopy(ApduResponse, 0, responseData, 0, (int)outputLength);
string apduString = string.Format("APDU Buffer[{0}] => Response[{1}]", ByteArray.ToString(ApduBuffer), ByteArray.ToString(responseData));
apduTrace.Add(apduString);
Trace.WriteLine(apduString);
return(new APDUResponse(responseData));
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardEstablishContext(
/// IN DWORD dwScope,
/// IN LPCVOID pvReserved1,
/// IN LPCVOID pvReserved2,
/// OUT LPSCARDCONTEXT phContext
/// );
/// </summary>
/// <param name="Scope"></param>
public void EstablishContext(SCOPE Scope)
{
IntPtr hContext = Marshal.AllocHGlobal(Marshal.SizeOf(context));
lastError = PCSC.SCardEstablishContext((uint)Scope, IntPtr.Zero, IntPtr.Zero, hContext);
if (lastError != 0)
{
Marshal.FreeHGlobal(hContext);
ThrowSmartcardException("SCardEstablishContext", lastError);
}
context = Marshal.ReadIntPtr(hContext);
Marshal.FreeHGlobal(hContext);
}
/// <summary>
/// Gets the attributes of the card
/// </summary>
/// <param name="AttribId">Identifier for the Attribute to get</param>
/// <returns>Attribute content</returns>
public override byte[] GetAttribute(UInt32 AttribId)
{
byte[] attr = null;
UInt32 attrLen = 0;
lastError = PCSC.SCardGetAttrib(cardHandle, AttribId, attr, out attrLen);
ThrowSmartcardException("SCardGetAttr", lastError);
if (attrLen != 0)
{
attr = new byte[attrLen];
lastError = PCSC.SCardGetAttrib(cardHandle, AttribId, attr, out attrLen);
ThrowSmartcardException("SCardGetAttr", lastError);
}
return(attr);
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardDisconnect(
/// IN SCARDHANDLE hCard,
/// IN DWORD dwDisposition
/// );
/// </summary>
/// <param name="Disposition"></param>
public override void Disconnect(DISCONNECT Disposition)
{
if (PCSC.SCardIsValidContext(context) == PCSC.SCARD_S_SUCCESS)
{
lastError = PCSC.SCardDisconnect(cardHandle, (uint)Disposition);
cardHandle = IntPtr.Zero;
try
{
ThrowSmartcardException("SCardDisconnect", lastError);
}
finally
{
ReleaseContext();
}
}
}
public virtual ControlResponse Control(IntPtr cardHandle, ControlCommand controlCmd)
{
int recvBufferLength = 255;
int recvdLength = recvBufferLength;
byte[] recvData = new byte[recvBufferLength];
uint dwControlCode = BitConverter.ToUInt32(controlCmd.ControlCode, 0);
PCSC.SCardControl(cardHandle, dwControlCode, controlCmd.ControlData, controlCmd.ControlData.Length, recvData, recvBufferLength, ref recvdLength);
byte[] responseData = new byte[recvdLength];
Buffer.BlockCopy(recvData, 0, responseData, 0, recvdLength);
ControlResponse controlResponse = new ControlResponse(responseData);
return(controlResponse);
}
public virtual ControlResponse Control(IntPtr cardHandle, ControlCommand controlCmd)
{
int recvBufferLength = 255;
int recvdLength = recvBufferLength;
byte[] recvData = new byte[recvBufferLength];
uint dwControlCode = BitConverter.ToUInt32(ByteArray.ReverseBuffer(controlCmd.ControlCode), 0);
int error = PCSC.SCardControl(cardHandle, dwControlCode, controlCmd.ControlData, controlCmd.ControlData.Length, recvData, recvBufferLength, ref recvdLength);
ThrowSmartcardException("SCardControl", error);
byte[] responseData = new byte[recvdLength];
Buffer.BlockCopy(recvData, 0, responseData, 0, recvdLength);
ControlResponse controlResponse = new ControlResponse(responseData);
return(controlResponse);
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardEstablishContext(
/// IN DWORD dwScope,
/// IN LPCVOID pvReserved1,
/// IN LPCVOID pvReserved2,
/// OUT LPSCARDCONTEXT phContext
/// );
/// </summary>
/// <param name="Scope"></param>
private static IntPtr EstablishContext(SCOPE Scope)
{
int lastError = PCSC.SCARD_S_SUCCESS;
IntPtr hContextRet = IntPtr.Zero;
IntPtr hContext = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(IntPtr)));
lastError = PCSC.SCardEstablishContext((uint)Scope, IntPtr.Zero, IntPtr.Zero, hContext);
if (lastError != 0)
{
Marshal.FreeHGlobal(hContext);
ThrowSmartcardException("SCardEstablishContext", lastError);
}
hContextRet = Marshal.ReadIntPtr(hContext);
Marshal.FreeHGlobal(hContext);
return(hContextRet);
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardTransmit(
/// SCARDHANDLE hCard,
/// LPCSCARD_I0_REQUEST pioSendPci,
/// LPCBYTE pbSendBuffer,
/// DWORD cbSendLength,
/// LPSCARD_IO_REQUEST pioRecvPci,
/// LPBYTE pbRecvBuffer,
/// LPDWORD pcbRecvLength
/// );
/// </summary>
/// <param name="ApduCmd">APDUCommand object with the APDU to send to the card</param>
/// <returns>An APDUResponse object with the response from the card</returns>
public override APDUResponse Transmit(APDUCommand ApduCmd)
{
// Must verify that it works with all type of cards
uint outputLength = (ApduCmd.Le == 0)
? APDUResponse.MAX_LENGHT
: (ApduCmd.Le + APDUResponse.SW_LENGTH);
byte[] ApduBuffer = null;
byte[] ApduResponse = new byte[outputLength];
PCSC.SCard_IO_Request ioRequest = new PCSC.SCard_IO_Request();
ioRequest.Protocol = protocol;
ioRequest.PciLength = (uint)Marshal.SizeOf(ioRequest);
// Build the command APDU
if (ApduCmd.Data == null)
{
ApduBuffer = new byte[APDUCommand.APDU_MIN_LENGTH + 1]; // Pass the Le = 0 as well
ApduBuffer[4] = (byte)ApduCmd.Le;
}
else
{
ApduBuffer = new byte[APDUCommand.APDU_MIN_LENGTH + 1 + ApduCmd.Data.Length];
Buffer.BlockCopy(ApduCmd.Data, 0, ApduBuffer, APDUCommand.APDU_MIN_LENGTH + 1, ApduCmd.Data.Length);
ApduBuffer[APDUCommand.APDU_MIN_LENGTH] = (byte)ApduCmd.Data.Length;
}
ApduBuffer[0] = ApduCmd.Class;
ApduBuffer[1] = ApduCmd.Ins;
ApduBuffer[2] = ApduCmd.P1;
ApduBuffer[3] = ApduCmd.P2;
lastError = PCSC.SCardTransmit(cardHandle, ref ioRequest, ApduBuffer, (uint)ApduBuffer.Length, IntPtr.Zero, ApduResponse, out outputLength);
ThrowSmartcardException("SCardTransmit", lastError);
byte[] ApduData = new byte[outputLength];
Buffer.BlockCopy(ApduResponse, 0, ApduData, 0, (int)outputLength);
return(new APDUResponse(ApduData));
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardListReaders(SCARDCONTEXT hContext,
/// LPCTSTR mszGroups,
/// LPTSTR mszReaders,
/// LPDWORD pcchReaders
/// );
/// </summary>
/// <returns>A string array of the readers</returns>
public override string[] ListReaders()
{
EstablishContext(SCOPE.User);
string[] sListReaders = null;
UInt32 pchReaders = 0;
IntPtr szListReaders = IntPtr.Zero;
lastError = PCSC.SCardListReaders(context, null, szListReaders, out pchReaders);
if (lastError == 0)
{
szListReaders = Marshal.AllocHGlobal((int)pchReaders);
lastError = PCSC.SCardListReaders(context, null, szListReaders, out pchReaders);
if (lastError == 0)
{
char[] caReadersData = new char[pchReaders];
int nbReaders = 0;
for (int nI = 0; nI < pchReaders; nI++)
{
caReadersData[nI] = (char)Marshal.ReadByte(szListReaders, nI);
if (caReadersData[nI] == 0)
{
nbReaders++;
}
}
// Remove last 0
--nbReaders;
if (nbReaders != 0)
{
sListReaders = new string[nbReaders];
char[] caReader = new char[pchReaders];
int nIdx = 0;
int nIdy = 0;
int nIdz = 0;
// Get the nJ string from the multi-string
while (nIdx < pchReaders - 1)
{
caReader[nIdy] = caReadersData[nIdx];
if (caReader[nIdy] == 0)
{
sListReaders[nIdz] = new string(caReader, 0, nIdy);
++nIdz;
nIdy = 0;
caReader = new char[pchReaders];
}
else
{
++nIdy;
}
++nIdx;
}
}
}
Marshal.FreeHGlobal(szListReaders);
}
ReleaseContext();
ThrowSmartcardException("SCardListReaders", lastError);
return(sListReaders);
}
/// <summary>
/// This function must implement a card detection mechanism.
///
/// When card insertion is detected, it must call the method CardInserted()
/// When card removal is detected, it must call the method CardRemoved()
///
/// </summary>
protected override void RunCardDetection(string reader)
{
bool bFirstLoop = true;
IntPtr hContext = IntPtr.Zero; // Local context
IntPtr phContext;
phContext = Marshal.AllocHGlobal(Marshal.SizeOf(hContext));
if (PCSC.SCardEstablishContext((uint)SCOPE.User, IntPtr.Zero, IntPtr.Zero, phContext) == 0)
{
hContext = Marshal.ReadIntPtr(phContext);
Marshal.FreeHGlobal(phContext);
UInt32 nbReaders = 1;
PCSC.SCard_ReaderState[] readerState = new PCSC.SCard_ReaderState[nbReaders];
readerState[0].CurrentState = (UInt32)PCSC.CARD_STATE.UNAWARE;
readerState[0].Reader = reader;
UInt32 eventState;
UInt32 currentState = readerState[0].CurrentState;
// Card detection loop
do
{
if (PCSC.SCardGetStatusChange(hContext, WAIT_TIME
, readerState, nbReaders) == 0)
{
eventState = readerState[0].EventState;
currentState = readerState[0].CurrentState;
if (bFirstLoop)
{
// Check if a card is already inserted
if ((eventState & (uint)PCSC.CARD_STATE.PRESENT) == (uint)PCSC.CARD_STATE.PRESENT)
{
CardInserted(reader);
}
}
else if (((eventState & (uint)PCSC.CARD_STATE.CHANGED) == (uint)PCSC.CARD_STATE.CHANGED) && !bFirstLoop)
{
// State has changed
if ((eventState & (uint)PCSC.CARD_STATE.EMPTY) == (uint)PCSC.CARD_STATE.EMPTY)
{
// There is no card, card has been removed -> Fire CardRemoved event
CardRemoved((string)reader);
}
if (((eventState & (uint)PCSC.CARD_STATE.PRESENT) == (uint)PCSC.CARD_STATE.PRESENT) &&
((eventState & (uint)PCSC.CARD_STATE.PRESENT) != (currentState & (uint)PCSC.CARD_STATE.PRESENT)))
{
// There is a card in the reader -> Fire CardInserted event
CardInserted(reader);
}
if ((eventState & (uint)PCSC.CARD_STATE.ATRMATCH) == (uint)PCSC.CARD_STATE.ATRMATCH)
{
// There is a card in the reader and it matches the ATR we were expecting-> Fire CardInserted event
CardInserted(reader);
}
}
// The current stateis now the event state
readerState[0].CurrentState = eventState;
bFirstLoop = false;
}
Thread.SpinWait(50000);
if (cancellationToken.IsCancellationRequested)
{
break;
}
}while (true); // Exit on request
}
else
{
Marshal.FreeHGlobal(phContext);
throw new Exception("PC/SC error");
}
PCSC.SCardReleaseContext(hContext);
cancellationToken.ThrowIfCancellationRequested();
}