I'm asking because it conflicts with this code in rdesktop's scard.c:
/* Is this a proper Windows smart card ioctl? */
if ((dwControlCode & 0xffff0000) == (49 << 16))
rdesktop transforms any control codes you get from a GET_FEATURE_REQUEST into
the Windows format for SCARD_CTL_CODE. When you use one of these, the code
following the two lines above should transform them back to the Pcsclite
format. Except that this doesn't work because the bytes contain
CLASS2_IOCTL_MAGIC which overlaps the 0x31 << 16 from the Windows format and
the condition always evaluates to false. Makes all class 2 reader functions
inaccessible via rdesktop.
I'd like to understand what these bytes do, before reporting a problem to the
rdesktop people.
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