public void Dispose()
{
if (this.Context != IntPtr.Zero)
{
SCardApi.SCardReleaseContext(this.Context);
}
}
public byte[] Transmit(IntPtr hCard, byte[] pbSendBuffer)
{
Trace.Assert(SCardApi.sessionProtocols.ContainsKey(hCard));
IntPtr SendPci = IntPtr.Zero;
IntPtr ResponsePci = IntPtr.Zero;
uint ResponseBufferLength = 512;
byte[] ResponseBuffer = new byte[ResponseBufferLength];
switch ((SCardProtocol)SCardApi.sessionProtocols[hCard])
{
case SCardProtocol.T0:
SendPci = SCardApi.SCARD_PCI_T0;
break;
case SCardProtocol.T1:
SendPci = SCardApi.SCARD_PCI_T1;
break;
case SCardProtocol.Raw:
SendPci = SCardApi.SCARD_PCI_RAW;
break;
}
SCardError Error = SCardApi.SCardTransmit(hCard, SendPci, pbSendBuffer, (uint)pbSendBuffer.Length, ResponsePci, ResponseBuffer, ref ResponseBufferLength);
if (SCardApi.IsError(Error))
{
throw new SCardException(Error);
}
byte[] Response = new byte[ResponseBufferLength];
Array.Copy(ResponseBuffer, 0, Response, 0, ResponseBufferLength);
return(Response);
}
public string[] ListReaders()
{
uint CardReadersSize = 0;
char[] CardReaders = null;
SCardError Error = SCardApi.SCardListReaders(this.Context, null, null, ref CardReadersSize);
if (!SCardApi.IsError(Error))
{
CardReaders = new char[CardReadersSize];
Error = SCardApi.SCardListReaders(this.Context, null, CardReaders, ref CardReadersSize);
}
if (SCardApi.IsError(Error))
{
switch (Error)
{
case SCardError.NoReadersAvailable:
return(new string[0]);
default:
throw new SCardException(Error);
}
}
else
{
return(SCardApi.ToStringArray(CardReaders));
}
}
static SCardApi()
{
IntPtr Lib = SCardApi.LoadLibrary("winscard.dll");
SCardApi.SCARD_PCI_T0 = SCardApi.GetProcAddress(Lib, "g_rgSCardT0Pci");
SCardApi.SCARD_PCI_T1 = SCardApi.GetProcAddress(Lib, "g_rgSCardT1Pci");
SCardApi.SCARD_PCI_RAW = SCardApi.GetProcAddress(Lib, "g_rgSCardRawPci");
SCardApi.FreeLibrary(Lib);
}
public void Disconnect(IntPtr cardHandle, SCardDisposition dwDisposition)
{
SCardError Error = SCardApi.SCardDisconnect(cardHandle, dwDisposition);
if (SCardApi.IsError(Error))
{
throw new SCardException(Error);
}
SCardApi.sessionProtocols.Remove(cardHandle);
}
public IntPtr Connect(string readerName, SCardShareMode shareMode, SCardProtocol protocol)
{
IntPtr CardHandle;
SCardProtocol ActiveProtocol;
SCardError Error = SCardApi.SCardConnect(this.Context, readerName, shareMode, protocol, out CardHandle, out ActiveProtocol);
if (SCardApi.IsError(Error))
{
throw new SCardException(Error);
}
SCardApi.sessionProtocols.Add(CardHandle, protocol);
return(CardHandle);
}
public byte[] ControlCardReader(IntPtr hCard, byte[] command)
{
byte[] Response = new byte[1024];
int ResponseLength = 0;
SCardError Error = SCardApi.SCardControl(hCard, 0x00312000, command, command.Length, Response, Response.Length, ref ResponseLength);
if (SCardApi.IsError(Error))
{
throw new SCardException(Error);
}
byte[] RealResponse = new byte[ResponseLength];
Array.Copy(Response, 0, RealResponse, 0, ResponseLength);
return(RealResponse);
}
public void Reconnect(IntPtr cardHandle, SCardDisposition disposition, SCardShareMode shareMode, SCardProtocol protocol)
{
if (disposition == SCardDisposition.Eject)
{
throw new ArgumentException("Disposition.Eject not possible in reconnect", nameof(disposition));
}
SCardProtocol ActiveProtocol;
SCardError Error = SCardApi.SCardReconnect(cardHandle, shareMode, protocol, disposition, out ActiveProtocol);
if (SCardApi.IsError(Error))
{
throw new SCardException(Error);
}
SCardApi.sessionProtocols.Remove(cardHandle);
SCardApi.sessionProtocols.Add(cardHandle, protocol);
}
/// <summary>
/// Waits for status change on the given list of card readers.
/// If cancelled by a call to <see cref="Cancel"/> or due to timeout, it returns <c>false</c>, otherwise <c>true</c>
/// </summary>
public bool GetStatusChange(int dwTimeout, SCardCardReaderState[] cardReaderStates)
{
SCardError Error = SCardApi.SCardGetStatusChange(this.Context, dwTimeout, cardReaderStates, cardReaderStates.Length);
if (Error == SCardError.Cancelled || Error == SCardError.Timeout)
{
return(false);
}
else if (SCardApi.IsError(Error))
{
throw new SCardException(Error);
}
else
{
return(true);
}
}
public byte[] GetAttribute(IntPtr hCard, SCardAttributes attribute)
{
uint AttributeLength = 0;
SCardError Error = SCardApi.SCardGetAttrib(hCard, (uint)attribute, null, ref AttributeLength);
if (Error == (SCardError)22)
{
return(null);
}
if (SCardApi.IsError(Error))
{
throw new SCardException(Error);
}
byte[] Attribute = new byte[AttributeLength];
Error = SCardApi.SCardGetAttrib(hCard, (uint)attribute, Attribute, ref AttributeLength);
if (SCardApi.IsError(Error))
{
throw new SCardException(Error);
}
return(Attribute);
}
public void Cancel()
{
SCardApi.SCardCancel(this.Context);
}
