public static List <string> getReaders(IntPtr hContext)
{
uint pcchReaders = 0;
uint ret = NfcApi.SCardListReaders(hContext, null, null, ref pcchReaders);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
return(new List <string>());//リーダーの情報が取得できません。
}
byte[] mszReaders = new byte[pcchReaders * 2]; // 1文字2byte
// Fill readers buffer with second call.
ret = NfcApi.SCardListReaders(hContext, null, mszReaders, ref pcchReaders);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
return(new List <string>());//リーダーの情報が取得できません。
}
UnicodeEncoding unicodeEncoding = new UnicodeEncoding();
string readerNameMultiString = unicodeEncoding.GetString(mszReaders);
List <string> readersList = new List <string>();
int nullindex = readerNameMultiString.IndexOf((char)0); // 装置は１台のみ
readersList.Add(readerNameMultiString.Substring(0, nullindex));
return(readersList);
}
public static IntPtr establishContext()
{
IntPtr context = IntPtr.Zero;
uint ret = NfcApi.SCardEstablishContext(NfcConstant.SCARD_SCOPE_USER, IntPtr.Zero, IntPtr.Zero, out context);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
string message;
switch (ret)
{
case NfcConstant.SCARD_E_NO_SERVICE:
message = "サービスが起動されていません。";
break;
default:
message = "Smart Cardサービスに接続できません。code = " + ret;
break;
}
Console.WriteLine(message);
return(IntPtr.Zero);
}
Console.WriteLine("Smart Cardサービスに接続しました。");
return(context);
}
private static IntPtr getPciT1()
{
IntPtr handle = NfcApi.LoadLibrary("Winscard.dll");
IntPtr pci = NfcApi.GetProcAddress(handle, "g_rgSCardT1Pci");
NfcApi.FreeLibrary(handle);
return(pci);
}
public static void disconnect(IntPtr hCard)
{
uint ret = NfcApi.SCardDisconnect(hCard, NfcConstant.SCARD_LEAVE_CARD);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
throw new ApplicationException("カードとの接続を切断できません。code = " + ret);
}
}
public static IntPtr connect(IntPtr hContext, string readerName)
{
IntPtr hCard = IntPtr.Zero;
IntPtr activeProtocol = IntPtr.Zero;
uint ret = NfcApi.SCardConnect(hContext, readerName, NfcConstant.SCARD_SHARE_SHARED, NfcConstant.SCARD_PROTOCOL_T1, ref hCard, ref activeProtocol);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
throw new ApplicationException("カードに接続できません。code = " + ret);
}
return(hCard);
}
public static void waitReaderStatusChange(IntPtr hContext, NfcApi.SCARD_READERSTATE[] readerStateArray, int timeoutMillis)
{
uint ret = NfcApi.SCardGetStatusChange(hContext, timeoutMillis /*msec*/, readerStateArray, readerStateArray.Length);
switch (ret)
{
case NfcConstant.SCARD_S_SUCCESS:
break;
case NfcConstant.SCARD_E_TIMEOUT:
throw new TimeoutException();
default:
throw new ApplicationException("リーダーの状態変化の取得に失敗。code = " + ret);
}
}
public static int transmit(IntPtr hCard, byte[] sendBuffer, byte[] recvBuffer)
{
NfcApi.SCARD_IO_REQUEST ioRecv = new NfcApi.SCARD_IO_REQUEST();
ioRecv.cbPciLength = 255;
int pcbRecvLength = recvBuffer.Length;
int cbSendLength = sendBuffer.Length;
IntPtr SCARD_PCI_T1 = getPciT1();
uint ret = NfcApi.SCardTransmit(hCard, SCARD_PCI_T1, sendBuffer, cbSendLength, ioRecv, recvBuffer, ref pcbRecvLength);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
throw new ApplicationException("カードへの送信に失敗しました。code = " + ret);
}
Console.WriteLine("");
return(pcbRecvLength); // 受信したバイト数(recvBufferに受け取ったバイト数)
}
public static NfcApi.SCARD_READERSTATE[] initializeReaderState(IntPtr hContext, List <string> readerNameList)
{
NfcApi.SCARD_READERSTATE[] readerStateArray = new NfcApi.SCARD_READERSTATE[readerNameList.Count];
int i = 0;
foreach (string readerName in readerNameList)
{
readerStateArray[i].dwCurrentState = NfcConstant.SCARD_STATE_UNAWARE;
readerStateArray[i].szReader = readerName;
i++;
}
uint ret = NfcApi.SCardGetStatusChange(hContext, 100 /*msec*/, readerStateArray, readerStateArray.Length);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
throw new ApplicationException("リーダーの初期状態の取得に失敗。code = " + ret);
}
return(readerStateArray);
}