public SCardError Connect(IntPtr hContext, string szReader, SCardShareMode dwShareMode, SCardProtocol dwPreferredProtocols, out IntPtr phCard, out SCardProtocol pdwActiveProtocol)
{
var readername = SCardHelper.ConvertToByteArray(szReader, TextEncoding, Platform.Lib.CharSize);
var result = SCardConnect(hContext,
readername,
(int)dwShareMode,
(int)dwPreferredProtocols,
out phCard,
out var activeproto);
pdwActiveProtocol = (SCardProtocol)activeproto;
return(SCardHelper.ToSCardError(result));
}
public SCardError ListReaders(IntPtr hContext, string[] groups, out string[] readers)
{
var dwReaders = 0;
// initialize groups array
byte[] mszGroups = null;
if (groups != null)
{
mszGroups = SCardHelper.ConvertToByteArray(groups, TextEncoding);
}
// determine the needed buffer size
var ctx = hContext.ToInt32();
var rc = SCardHelper.ToSCardError(
MacOsxNativeMethods.SCardListReaders(
ctx,
mszGroups,
null,
ref dwReaders));
if (rc != SCardError.Success)
{
readers = null;
return(rc);
}
// initialize array for returning reader names
var mszReaders = new byte[(int)dwReaders];
rc = SCardHelper.ToSCardError(
MacOsxNativeMethods.SCardListReaders(
ctx,
mszGroups,
mszReaders,
ref dwReaders));
readers = (rc == SCardError.Success)
? SCardHelper.ConvertToStringArray(mszReaders, TextEncoding)
: null;
return(rc);
}
public SCardError ListReaders(IntPtr hContext, string[] groups, out string[] readers)
{
var dwReaders = 0;
// initialize groups array
byte[] mszGroups = null;
if (groups != null)
{
mszGroups = SCardHelper.ConvertToByteArray(groups, TextEncoding);
}
// determine the needed buffer size
var rc = SCardHelper.ToSCardError(
SCardListReaders(hContext,
mszGroups,
null,
ref dwReaders));
if (rc != SCardError.Success)
{
readers = null;
return(rc);
}
// initialize array
var mszReaders = new byte[dwReaders * sizeof(char)];
rc = SCardHelper.ToSCardError(
SCardListReaders(hContext,
mszGroups,
mszReaders,
ref dwReaders));
readers = (rc == SCardError.Success)
? SCardHelper.ConvertToStringArray(mszReaders, TextEncoding)
: null;
return(rc);
}
