ISMAIL MASSERAN
50 lines
1.8 KiB
Python
50 lines
1.8 KiB
Python
"""Base class for status word error checkers.
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__author__ = "https://www.gemalto.com/"
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Copyright 2001-2012 gemalto
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Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com
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This file is part of pyscard.
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pyscard is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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pyscard is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with pyscard; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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"""
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# pylint: disable=too-few-public-methods
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class ErrorChecker:
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"""Base class for status word error checking strategies.
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Error checking strategies are chained into an L{ErrorCheckingChain} to
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implement a Chain of Responsibility. Each strategy in the chain is
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called until an error is detected. The strategy raises a
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L{smartcard.sw.SWExceptions} exception when an error is detected.
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Implementation derived from Bruce Eckel, Thinking in Python. The
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L{ErrorCheckingChain} implements the Chain Of Responsibility design
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pattern.
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"""
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def __call__(self, data, sw1, sw2):
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"""Called to test data, sw1 and sw2 for error.
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Derived classes must raise a L{smartcard.sw.SWExceptions} upon error.
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@param data: apdu response data
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@param sw1: apdu data status word 1
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@param sw2: apdu data status word 2
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"""
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