"""Smartcard module exceptions.
This module defines the exceptions raised by the smartcard.pcsc modules.
__author__ = "http://www.gemalto.com"
Copyright 2001-2010 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
"""
# gemalto scard library
import smartcard.scard
class BaseSCardException:
"""Base class for scard (aka PCSC) exceptions.
scard exceptions are raised by the scard module, i.e.
low-level PCSC access to readers and cards.
"""
def __init__( self, hresult ):
"""Constructor that stores the pcsc error status."""
self.hresult=hresult
def __str__(self):
"""Returns a string representation of the exception."""
return "scard exception!"
class EstablishContextException(BaseSCardException):
"""Raised when scard failed to establish context with PCSC."""
def __str__(self):
"""Returns a string representation of the exception."""
return repr( 'Failure to establish context: ' + smartcard.scard.SCardGetErrorMessage(self.hresult) )
class ListReadersException(BaseSCardException):
"""Raised when scard failed to list readers."""
def __str__(self):
return repr( 'Failure to list readers: ' + smartcard.scard.SCardGetErrorMessage(self.hresult) )
class EstablishContextException(BaseSCardException):
"""Raised when scard failed to establish a PCSC context."""
def __str__(self):
return repr( 'Failure to establish context: ' + smartcard.scard.SCardGetErrorMessage(self.hresult) )
class ReleaseContextException(BaseSCardException):
"""Raised when scard failed to release PCSC context."""
def __str__(self):
return repr( 'Failure to release context: ' + smartcard.scard.SCardGetErrorMessage(self.hresult) )
if __name__ == "__main__":
import sys
try:
raise EstablishContextException( smartcard.scard.SCARD_E_NO_MEMORY )
except:
print sys.exc_info()[1]
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