private byte[] GetAnswerToReset()
{
int result = 0;
byte[] readerName = null;
uint readerLen = 0;
uint state = 0;
uint protocol = 0;
byte[] atr = null;
uint atrLen = 0;
result = WinSCard.SCardStatus(card, readerName, ref readerLen, out state, out protocol, atr, ref atrLen);
if (result != WinSCard.SCARD_S_SUCCESS)
{
throw new PCSCException(result);
}
readerName = new byte[readerLen];
atr = new byte[atrLen];
result = WinSCard.SCardStatus(card, readerName, ref readerLen, out state, out protocol, atr, ref atrLen);
if (result != WinSCard.SCARD_S_SUCCESS)
{
throw new PCSCException(result);
}
#region Debug output
#if DEBUG
if (outputDebugString)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < atrLen; i++)
{
sb.AppendFormat("{0:X2}", atr[i]);
}
Debug.WriteLine(sb.ToString());
}
#endif
#endregion
MultiString msReaderName = new MultiString(readerName);
if (result != WinSCard.SCARD_S_SUCCESS)
{
throw new PCSCException(result);
}
return(atr);
}
public PCSCReader()
{
int result = 0;
result = WinSCard.SCardEstablishContext(WinSCard.Scope.SCARD_SCOCPE_SYSTEM, IntPtr.Zero, IntPtr.Zero, out context);
if (result != WinSCard.SCARD_S_SUCCESS)
{
Debug.WriteLine(WinSCard.SCardErrorMessage(result));
}
byte[] readers = null;
uint readerCount = 0;
result = WinSCard.SCardListReaders(context, null, readers, ref readerCount);
readers = new byte[readerCount];
result = WinSCard.SCardListReaders(context, null, readers, ref readerCount);
availableReaders = new MultiString(readers);
if (result != WinSCard.SCARD_S_SUCCESS)
{
Debug.WriteLine(WinSCard.SCardErrorMessage(result));
}
//Start a background worker thread which monitors available card readers.
if ((availableReaders.Count > 0))
{
readerStates = new WinSCard.SCARD_READERSTATE[availableReaders.Count];
for (int i = 0; i < readerStates.Length; i++)
{
readerStates[i].szReader = availableReaders.ToArray()[i];
}
monitorThread = new BackgroundWorker();
monitorThread.WorkerSupportsCancellation = true;
monitorThread.DoWork += WaitChangeStatus;
monitorThread.RunWorkerAsync();
}
}
public PCSCReader()
{
int result = 0;
result = WinSCard.SCardEstablishContext(WinSCard.Scope.SCARD_SCOCPE_SYSTEM, IntPtr.Zero, IntPtr.Zero, out context);
if (result != WinSCard.SCARD_S_SUCCESS)
{
Debug.WriteLine(WinSCard.SCardErrorMessage(result));
}
byte[] readers = null;
uint readerCount = 0;
result = WinSCard.SCardListReaders(context, null, readers, ref readerCount);
readers = new byte[readerCount];
result = WinSCard.SCardListReaders(context, null, readers, ref readerCount);
availableReaders = new MultiString(readers);
if (result != WinSCard.SCARD_S_SUCCESS)
{
Debug.WriteLine(WinSCard.SCardErrorMessage(result));
}
//Start a background worker thread which monitors available card readers.
if ((availableReaders.Count > 0))
{
readerStates = new WinSCard.SCARD_READERSTATE[availableReaders.Count];
for (int i = 0; i < readerStates.Length; i++)
{
readerStates[i].szReader = availableReaders.ToArray()[i];
}
monitorThread = new BackgroundWorker();
monitorThread.WorkerSupportsCancellation = true;
monitorThread.DoWork += WaitChangeStatus;
monitorThread.RunWorkerAsync();
}
}