private void UpdateReaderState(SCardCardReaderState state, string cardReaderName)
{
PcscCardReader CardReader = (PcscCardReader)this.Readers[cardReaderName];
SCardReaderState NewState = state.dwEventState;
if ((NewState & SCardReaderState.Unavailable) != 0 && this.scardApi.ListReaders().Contains(cardReaderName) == false)
{
//CardReader was removed, if state changes to unavailiable _and_ reader is not in the list anymore.
//Otherwise, reader was opened in direct mode
this.RemoveCardReader(CardReader);
return;
}
else
{
try
{
// CardReader state changed
CardReader.CardReaderState = state;
return;
}
catch (Exception Error)
{
Trace.Fail($"Exception was thrown inside status change handler. This may lead to a blocking application! Origianl Exception was: {Error.Message}");
throw;
}
}
}
private void InsertNewCardReaders()
{
string[] CardReaderNames = this.scardApi.ListReaders();
foreach (string CardReadername in CardReaderNames)
{
if (!this.Readers.ContainsName(CardReadername))
{
PcscCardReader NewCardReader = this.CreateReader(CardReadername);
this.AddCardReader(NewCardReader);
}
}
}
protected internal override void ResetCard(Protocol protocol)
{
if (this.CardHandle != IntPtr.Zero)
{
this.scardApi.Reconnect(this.CardHandle, SCardDisposition.Reset, SCardShareMode.Exclusive, PcscCardReader.ProtocolToScardProtocol(protocol));
}
}
protected internal override void ConnectCard(Protocol protocol)
{
if (this.CardHandle != IntPtr.Zero)
{
throw new InvalidOperationException("Smart Card already connected");
}
try
{
this.CardHandle = this.scardApi.Connect(this.Name, SCardShareMode.Exclusive, PcscCardReader.ProtocolToScardProtocol(protocol));
}
catch (SCardException Exception)
{
switch (Exception.Error)
{
case SCardError.RequestNotSupported:
case SCardError.ProtocolMismatch:
throw new ProtocolNotSupportedException(this.SmartCard, protocol);
case SCardError.SharingViolation:
throw new SmartCardInUseException(this.SmartCard);
default:
throw;
}
}
}