Chicony HP Skylab error in the protocol stream

[alsot456]

The same problem like (#48 ccid)
Rdesktop with Athena card and Chicony HP Skylab USB Smartcard Keyboard reader.
Debian stretch amd64 with libccid 1.4.29-2, athena's idprotectclient-633.00
This configuration works properly with two other readers.
With Chicony HP Skylab I've got Windows messages from asepkcs.dll exception code: 0xc0000409, "error in the protocol stream".
Debian syslog:
syslog_1.txt

and termdd:
t1a.txt

t3a.txt

pcsc_scan looks good

[LudovicRousseau]

I can't find any error in the pcscd logs.

You have some kernel errors: xhci_hcd 0000:00:14.0: WARN Event TRB for slot 2 ep 4 with no TDs queued? but that does not prevent the reader from returning an answer.

I don't think the problem is at the PC/SC layer. Maybe in the rdesktop protocol?

[LudovicRousseau]

Duplicate of LudovicRousseau/CCID#48 ?

[alsot456]

My kernel shows this xhci_hcd error with other working reader, so maybe this is not the reason. The library asepkcs.dll crashes with incorrect data. Rdesktop works properly on this system. I can log into Windows with another reader. Even with Chicony keyboard Rdesktop provides comunication with Windows, but generates an error in the protocol stream and stack overflow.
I suspect problem beetween pcsc and libusb:

pcscd[1387]: [50.198279] [0000056f] libusb: debug [handle_bulk_completion] abnormal reap: urb status -2

I've genetated pcsc/libusb log:
syslog_Err_4_1.log

and usbmon data:
u1Chico-out.log

At the moment I really do not know where to put the problem correctly.

[alsot456]

There is a bug in Athenas library ascpkcs.dll (6.5.0.1) - smartcrad reader's name cannot exceed 64 char size.
If this happens, library crashes with stackoverflow.
This keyboard name is quite long,
and pcsc delivers thru rdp protocol concatenated string:
"Chicony HP Skylab USB Smartcard Keyboard [HP Skylab Smartcard Keyboard] (serialNumber..)"
which exceeds admissible length.
Smartcard readers with shorter names works fine with the same konfiguration,
but in this special case (HP Chickony keyboard wih athena smartcard with rdp connection to Windows Terminal Server crashes)

Testing solution:

1. In my case with environment prepared for debugging:
   I've changed in file ../ ccid-1.4.29/readers/supported_readers.txt:

Chicony USB Smart Card Keyboard
Chicony HP Skylab USB Smartcard Keyboard

into somethig short (for example: X)
then I've got something like:
"X [HP Skylab Smartcard Keyboard] (serialNumber..)"

First line is working.

2. • not tested, should work:
     Edit xml file: /usr/local/lib/pcsc/drivers/ifd-ccid.bundle/Contents/Info.plist
     and make a change for short names

[LudovicRousseau]

@alsot456 why do you repopen this bug if you know the problem is in ascpkcs.dll?

[alsot456]

The bug is really in ascpkcs.dll
In my opinion resolving problem on linux client side is much faster than waiting for ascpkcs.dll correctin.
Probably people with similar problem will start looking for solution in ccid/pcsc projects at first.

Maybe you'll want to decide about changes in your code

[LudovicRousseau]

Not a PCSC issue.
People could find information here by any good web search engine.
Closing.