public SCardError ListReaderGroups(IntPtr hContext, out string[] groups)
{
var dwGroups = 0;
// determine the needed buffer size
var rc = SCardHelper.ToSCardError(
SCardListReaderGroups(
hContext,
null,
ref dwGroups));
if (rc != SCardError.Success)
{
groups = null;
return(rc);
}
// initialize array
var mszGroups = new byte[dwGroups * sizeof(char)];
rc = SCardHelper.ToSCardError(
SCardListReaderGroups(
hContext,
mszGroups,
ref dwGroups));
groups = (rc == SCardError.Success)
? SCardHelper.ConvertToStringArray(mszGroups, TextEncoding)
: null;
return(rc);
}
public SCardError ListReaderGroups(IntPtr hContext, out string[] groups)
{
var dwGroups = IntPtr.Zero;
// determine the needed buffer size
var rc = SCardHelper.ToSCardError(
UnixNativeMethods.SCardListReaderGroups(
hContext,
null,
ref dwGroups));
if (rc != SCardError.Success)
{
groups = null;
return(rc);
}
// initialize array for returning group names
var mszGroups = new byte[(int)dwGroups];
rc = SCardHelper.ToSCardError(
UnixNativeMethods.SCardListReaderGroups(
hContext,
mszGroups,
ref dwGroups));
groups = (rc == SCardError.Success)
? SCardHelper.ConvertToStringArray(mszGroups, 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 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
byte[] 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);
}
public SCardError Status(IntPtr hCard, out string[] szReaderName, out IntPtr pdwState, out IntPtr pdwProtocol, out byte[] pbAtr)
{
var readerName = new byte[MAX_READER_NAME * CharSize];
var readerNameSize = MAX_READER_NAME;
pbAtr = new byte[MAX_ATR_SIZE];
var atrlen = pbAtr.Length;
int state, proto;
var rc = SCardHelper.ToSCardError(SCardStatus(
hCard,
readerName,
ref readerNameSize,
out state,
out proto,
pbAtr,
ref atrlen));
if (rc == SCardError.InsufficientBuffer || (MAX_READER_NAME < readerNameSize) || (pbAtr.Length < atrlen))
{
// second try
if (MAX_READER_NAME < readerNameSize)
{
// readername byte array was too short
readerName = new byte[readerNameSize * CharSize];
}
if (pbAtr.Length < atrlen)
{
// ATR byte array was too short
pbAtr = new byte[atrlen];
}
rc = SCardHelper.ToSCardError(SCardStatus(
hCard,
readerName,
ref readerNameSize,
out state,
out proto,
pbAtr,
ref atrlen));
}
pdwProtocol = (IntPtr)proto;
if (rc == SCardError.Success)
{
pdwState = (IntPtr)state.ConvertToSCardState();
if (atrlen < pbAtr.Length)
{
Array.Resize(ref pbAtr, atrlen);
}
if (readerNameSize < (readerName.Length / CharSize))
{
Array.Resize(ref readerName, readerNameSize * CharSize);
}
szReaderName = SCardHelper.ConvertToStringArray(readerName, TextEncoding);
}
else
{
pdwState = (IntPtr)SCardState.Unknown;
szReaderName = null;
}
return(rc);
}
public SCardError Status(IntPtr hCard, out string[] szReaderName, out IntPtr pdwState, out IntPtr pdwProtocol,
out byte[] pbAtr)
{
var readerName = new byte[MAX_READER_NAME * CharSize];
var readerNameSize = (IntPtr)MAX_READER_NAME;
pbAtr = new byte[MAX_ATR_SIZE];
var atrlen = (IntPtr)pbAtr.Length;
var rc = SCardHelper.ToSCardError(UnixNativeMethods.SCardStatus(
hCard,
readerName,
ref readerNameSize,
out var state,
out var proto,
pbAtr,
ref atrlen));
if (rc == SCardError.InsufficientBuffer || (MAX_READER_NAME < ((int)readerNameSize)) ||
(pbAtr.Length < (int)atrlen))
{
// second try
if (MAX_READER_NAME < ((int)readerNameSize))
{
// readername byte array was too short
readerName = new byte[(int)readerNameSize * CharSize];
}
if (pbAtr.Length < (int)atrlen)
{
// ATR byte array was too short
pbAtr = new byte[(int)atrlen];
}
rc = SCardHelper.ToSCardError(UnixNativeMethods.SCardStatus(
hCard,
readerName,
ref readerNameSize,
out state,
out proto,
pbAtr,
ref atrlen));
}
pdwState = state;
pdwProtocol = proto;
if (rc == SCardError.Success)
{
state = state.Mask(STATUS_MASK);
if ((int)atrlen < pbAtr.Length)
{
Array.Resize(ref pbAtr, (int)atrlen);
}
if (((int)readerNameSize) < (readerName.Length / CharSize))
{
Array.Resize(ref readerName, (int)readerNameSize * CharSize);
}
szReaderName = SCardHelper.ConvertToStringArray(readerName, TextEncoding);
}
else
{
szReaderName = null;
}
return(rc);
}
