#! /usr/bin/env python
"""
Sample for python PCSC wrapper module: List PCSC readers

__author__ = "http://www.gemalto.com"

Copyright 2001-2009 gemalto
Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com

This file is part of pyscard.

pyscard is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

pyscard is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with pyscard; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
"""

from smartcard.scard import *

try:
    hresult, hcontext = SCardEstablishContext( SCARD_SCOPE_USER )
    if hresult!=0:
        raise error, 'Failed to establish context: ' + SCardGetErrorMessage(hresult)
    print 'Context established!'

    try:
        hresult, readers = SCardListReaders( hcontext, [] )
        if hresult!=0:
            raise error, 'Failed to list readers: ' + SCardGetErrorMessage(hresult)
        print 'PCSC Readers:', readers

        hresult, readerGroups = SCardListReaderGroups( hcontext )
        if hresult!=0:
            raise error, 'Unable to list reader groups: ' + SCardGetErrorMessage(hresult)
        print 'PCSC Reader groups:', readerGroups

    finally:
        hresult = SCardReleaseContext( hcontext )
        if hresult!=0:
            raise error, 'Failed to release context: ' + SCardGetErrorMessage(hresult)
        print 'Released context.'

    import sys
    if 'win32'==sys.platform:
        print 'press Enter to continue'
        sys.stdin.read(1)

except error:
    import sys
    print sys.exc_info()[0], ':', sys.exc_info()[1]