/// <inheritdoc />
public ErrorCode SCardListReaders(IntPtr context, string groups, ref IntPtr readers, ref uint size)
{
ErrorCode err;
unsafe
{
fixed(uint *psize = &size)
{
fixed(char *pgroups = groups)
{
if (size == AutoAllocate)
{
char *preaders;
err = UnsafePrimitives.SCardListReaders(
(void *)context,
pgroups,
(char *)&preaders,
psize
);
if (err == ErrorCode.Success)
{
readers = UnsafePrimitives.CharPointerToIntPtr(preaders, *psize);
UnsafePrimitives.SCardFreeMemory((void *)context, preaders);
}
}
else
{
err = UnsafePrimitives.SCardListReaders(
(void *)context,
pgroups,
(char *)readers,
psize
);
}
size = *psize;
}
}
}
return(err);
}
/// <inheritdoc />
public ErrorCode SCardStatus(IntPtr card, ref IntPtr readerName, ref uint readerNameSize, ref State status, ref Protocol protocol, ref IntPtr atr, ref uint atrSize)
{
ErrorCode ret;
unsafe
{
var ustatus = (uint)status;
var uprotocol = (uint)protocol;
fixed(uint *preaderNameSize = &readerNameSize)
{
fixed(uint *patrSize = &atrSize)
{
if (readerNameSize == AutoAllocate && atrSize == AutoAllocate)
{
char *preaderName;
byte *patr;
ret = UnsafePrimitives.SCardStatus(
(void *)card,
(char *)&preaderName,
preaderNameSize,
&ustatus,
&uprotocol,
(byte *)&patr,
patrSize
);
if (ret == ErrorCode.Success)
{
readerName = UnsafePrimitives.CharPointerToIntPtr(preaderName, *preaderNameSize);
UnsafePrimitives.SCardFreeMemory((void *)ActiveContext, preaderName);
atr = UnsafePrimitives.BytePointerToIntPtr(patr, *patrSize);
UnsafePrimitives.SCardFreeMemory((void *)ActiveContext, patr);
}
}
else if (readerNameSize == AutoAllocate && atrSize != AutoAllocate)
{
char *preaderName;
ret = UnsafePrimitives.SCardStatus(
(void *)card,
(char *)&preaderName,
preaderNameSize,
&ustatus,
&uprotocol,
(byte *)atr,
patrSize
);
if (ret == ErrorCode.Success)
{
readerName = UnsafePrimitives.CharPointerToIntPtr(preaderName, *preaderNameSize);
UnsafePrimitives.SCardFreeMemory((void *)ActiveContext, preaderName);
}
}
else if (readerNameSize != AutoAllocate && atrSize == AutoAllocate)
{
byte *patr;
ret = UnsafePrimitives.SCardStatus(
(void *)card,
(char *)readerName,
preaderNameSize,
&ustatus,
&uprotocol,
(byte *)&patr,
patrSize
);
atr = UnsafePrimitives.BytePointerToIntPtr(patr, *patrSize);
UnsafePrimitives.SCardFreeMemory((void *)ActiveContext, patr);
}
else
{
ret = UnsafePrimitives.SCardStatus(
(void *)card,
(char *)readerName,
(uint *)readerNameSize,
&ustatus,
&uprotocol,
(byte *)atr,
(uint *)atrSize
);
}
status = (State)ustatus;
protocol = (Protocol)uprotocol;
readerNameSize = *preaderNameSize;
atrSize = *patrSize;
}
}
}
return(ret);
}