/// <summary>
/// カードのアクセス権を解放する
/// </summary>
public void StopAccess()
{
if (cardContext != IntPtr.Zero)
{
WinSCard.Disconnect(cardContext, 0);
cardContext = IntPtr.Zero;
}
}
private void PcscCommand(byte[] data, int len, out uint recvLen)
{
SCARD_IO_REQUEST reqCpi = WinSCard.GetPci(protocol);
SCARD_IO_REQUEST resCpi = WinSCard.GetDefPci();
recvLen = (uint)res.Length;
if (!WinSCard.Transmit(cardContext, reqCpi, data, len, ref resCpi, res, ref recvLen))
{
throw GetException();
}
if (res[recvLen - 2] != 0x90 || res[recvLen - 1] != 0x00)
{
throw new PcscException(WinSCardError.SCARD_F_UNKNOWN_ERROR, new byte[] { res[recvLen - 2], res[recvLen - 1] });
}
}
/// <summary>
/// ライブラリの解放
/// (DisposeLibraryを実行した場合、次の利用では再びInitializeLibraryを実行する)
/// </summary>
/// <returns></returns>
public bool DisposeLibrary()
{
if (cardContext != IntPtr.Zero)
{
WinSCard.Disconnect(cardContext, 0);
cardContext = IntPtr.Zero;
}
if (rwContext != IntPtr.Zero)
{
WinSCard.ReleaseContext(rwContext);
rwContext = IntPtr.Zero;
}
res = cmd = authKey = null;
Debug.WriteLine("PcscReader Disposed!");
return(true);
}
/// <summary>
/// カードオブジェクトの生成
/// </summary>
private NfcTag CreateCard()
{
uint status;
byte[] atr;
if (!WinSCard.GetStatus(cardContext, out status, out protocol, out atr))
{
return(null);
}
int index = 0;
uint recvLen = 0;
index += SetHeader(0xCA, 0);
cmd[index++] = (byte)res.Length;
PcscCommand(cmd, index, out recvLen);
byte[] uid = new byte[recvLen - 2];
Array.Copy(res, 0, uid, 0, uid.Length);
if (atr[13] == 0x00 && atr[14] == 0x01)
{
return(new MifareCL(lib, uid));
}
else if (atr[13] == 0x00 && atr[14] == 0x02)
{
return(new MifareCL4K(lib, uid));
}
else if (atr[13] == 0x00 && atr[14] == 0x03)
{
return(new MifareUL(lib, uid));
}
else if (atr[13] == 0x00 && atr[14] == 0x3b)
{
return(new Felica(lib, uid));
}
else if (atr[13] == 0x00 && atr[14] == 0x3a)
{
return(new NTAG203(lib, uid));
}
return(null);
}
/// <summary>
/// ポーリング
/// </summary>
/// <returns>カード情報,NULL=未検出</returns>
public NfcTag Polling()
{
cardContext = IntPtr.Zero;
if (!WinSCard.Connect(rwContext, readerName, WinSCard.SCARD_SHARE_SHARED,
WinSCard.SCARD_PROTOCOL_T0 | WinSCard.SCARD_PROTOCOL_T1, ref cardContext, ref protocol))
{
return(null);
}
try
{
Debug.WriteLine("PcscReader:CardConnected!");
return(CreateCard());
}
catch (PcscException)
{
StopAccess();
return(null);
}
}
/// <summary>
/// Pasoriで検出された例外を取得する
/// </summary>
private Exception GetException()
{
if (rwContext == IntPtr.Zero)
{
return(new PcscException(WinSCardError.SCARD_E_NO_READERS_AVAILABLE, null));
}
if (cardContext == IntPtr.Zero)
{
return(new PcscException(WinSCardError.SCARD_W_REMOVED_CARD, null));
}
if (WinSCard.GetLastError() != WinSCardError.SCARD_S_SUCCESS)
{
return(new PcscException(WinSCard.GetLastError(), null));
}
else
{
return(new PcscException(WinSCard.GetLastError(), WinSCard.GetLastRes()));
}
}