private void bInit_Click(object sender, EventArgs e)
{
string ReaderList = "" + Convert.ToChar(0);
int indx;
int pcchReaders = 0;
string rName = "";
//Establish Context
retCode = ModWinsCard.SCardEstablishContext(ModWinsCard.SCARD_SCOPE_USER, 0, 0, ref hContext);
if (retCode != ModWinsCard.SCARD_S_SUCCESS)
{
displayOut(1, retCode, "");
return;
}
// 2. List PC/SC card readers installed in the system
retCode = ModWinsCard.SCardListReaders(this.hContext, null, null, ref pcchReaders);
if (retCode != ModWinsCard.SCARD_S_SUCCESS)
{
displayOut(1, retCode, "");
return;
}
EnableButtons();
byte[] ReadersList = new byte[pcchReaders];
// Fill reader list
retCode = ModWinsCard.SCardListReaders(this.hContext, null, ReadersList, ref pcchReaders);
if (retCode != ModWinsCard.SCARD_S_SUCCESS)
{
mMsg.AppendText("SCardListReaders Error: " + ModWinsCard.GetScardErrMsg(retCode));
return;
}
else
{
displayOut(0, 0, " ");
}
rName = "";
indx = 0;
//Convert reader buffer to string
while (ReadersList[indx] != 0)
{
while (ReadersList[indx] != 0)
{
rName = rName + (char)ReadersList[indx];
indx = indx + 1;
}
//Add reader name to list
cbReader.Items.Add(rName);
rName = "";
indx = indx + 1;
}
if (cbReader.Items.Count > 0)
{
cbReader.SelectedIndex = 0;
}
}
public string GetBlockValue(int block, int hCard)
{
var value = @"";
_returnCode = AuthenticateBlock(block, hCard);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(@"Fail to authenticate block", new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
_recvBuffLen = _sentBuff[4] + 2;
_sentBuff = new byte[255];
_recvBuff = new byte[255];
_sentBuff = APDUCommands.GetBlockValue(block);
_returnCode = ModWinsCard.SCardTransmit(hCard, ref _ioSendRequest, ref _sentBuff[0], _sentBuff.Length, ref _ioSendRequest, ref _recvBuff[0], ref _recvBuffLen);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(@"Fail to fetch block value", new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
for (int j = 0; j <= _recvBuffLen - 3; j++)
{
value += Convert.ToChar(_recvBuff[j]);
}
return(value);
}
public void UpdateBlockValue(int block, string value, int hCard)
{
_returnCode = AuthenticateBlock(block, hCard);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(@"Fail to authenticate block", new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
_recvBuffLen = 0x02;
_sentBuff = new byte[255];
_recvBuff = new byte[255];
_sentBuff = APDUCommands.SetBlockValue(block, value);
_returnCode = ModWinsCard.SCardTransmit(hCard, ref _ioSendRequest, ref _sentBuff[0], _sentBuff[4] + 5, ref _ioSendRequest, ref _recvBuff[0], ref _recvBuffLen);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS || _recvBuff[0].ToString(@"X2") != @"90")
{
throw new ApplicationException(@"Fail to update block value", new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
}
private void Connect()
{
if (IsConnected)
{
_returnCode = ModWinsCard.SCardDisconnect(_hCard, ModWinsCard.SCARD_EJECT_CARD);
IsConnected = false;
}
//_returnCode = APDUCommands.SetPICCParams(_piccParams);
_returnCode = ModWinsCard.SCardConnect(_hContext, _name, ModWinsCard.SCARD_SHARE_SHARED, ModWinsCard.SCARD_PROTOCOL_T0 | ModWinsCard.SCARD_PROTOCOL_T1, ref _hCard, ref _protocol);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
_returnCode = ModWinsCard.SCardConnect(_hContext, _name, ModWinsCard.SCARD_SHARE_DIRECT, ModWinsCard.SCARD_PROTOCOL_UNDEFINED, ref _hCard, ref _protocol);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(@"Failed to connect to reader " + _name, new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
}
IsConnected = true;
}