#4 Error on SCardEstablishContext

[Emiliano Leite]

Hello, I'm trying to use pyscard by running some code samples, but right at the beggining, when trying to establish a context, the program crashes due an unidentified error code, as showed below.

Python 2.7.10 (default, May 23 2015, 09:40:32) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> from smartcard.scard import *
>>> hresult, hcontext = SCardEstablishContext(SCARD_SCOPE_USER)
>>> hresult
-855572480L
>>> hex(hresult)
'-0x32ff0000L'
>>>

I don't know what the problem might be, since the value of hresult is not a listed SCARDRETCODE.
It would be of great help if somebody could look into it.

Best Regards,
Emiliano Leite.

[Ludovic Rousseau]

It looks like -855572480L is a Windows specific error code. I have no idea what it is.

I could find it also in http://bytes.com/topic/visual-basic-net/answers/385725-smartcard

What version of pyscard do you use?
Where did you got it?

[Emiliano Leite]

I'm using pyscard-1.7.0, which I downloaded here at sourceforge.

I don't believe there's a problem with my SCARDLIBlib dll(as mentioned in http://bytes.com/topic/visual-basic-net/answers/385725-smartcard) for I already have functioning scard libs in java and c++ here in my machine, but I could be wrong.

I'm really sorry about the duplicated tickets.

Cheers.
-Emiliano.

[Emiliano Leite]

I just now tried to install pyscard-1.7.0 on a 64bit machine, and it worked perfectly.

[Ludovic Rousseau]

Did you used the 32-bits version on the 32-bits Windows?

[Emiliano Leite]

Yes, I did.

[Ludovic Rousseau]

I do not use Windows myself.
Maybe the Windows binary provided at sourceforge is wrong. You can try to rebuild it yourself.

[Emiliano Leite]

I don't know what you mean by "rebuild it", but I already tried installing the lib using the binaries and the 'installer', both to no avail.

[Ludovic Rousseau]

"rebuild" is:

1. get the source code
2. build it
3. install it

Something like:

 git clone https://git.code.sf.net/p/pyscard/Git pyscard
 cd pyscard
 python setup build
 python setup install

[Emiliano Leite]

Just did it. Unfortunately it didn't work.

[Emiliano Leite]

Installing pyscard-1.9.0 (on Python 2.7.10) fixed the problem.

[Ludovic Rousseau]

OK. Closing the bug report.