"""ISO7816-9 error checker.

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

Copyright 2001-2012 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.sw.ErrorChecker import ErrorChecker
import smartcard.sw.SWExceptions

iso7816_9SW = {
    0x62: (smartcard.sw.SWExceptions.WarningProcessingException,
           {0x82: "End of file/record reached"}),

    0x64: (smartcard.sw.SWExceptions.ExecutionErrorException,
           {0x00: "Execution error"}),

    0x69: (smartcard.sw.SWExceptions.CheckingErrorException,
           {0x82: "Security status not satisfied"}),

    0x6A: (smartcard.sw.SWExceptions.CheckingErrorException,
           {0x80: "Incorrect parameters in data field",
            0x84: "Not enough memory space",
            0x89: "File already exists",
            0x8A: "DF name already exists"}),
}


class ISO7816_9ErrorChecker(ErrorChecker):
    """ISO7816-8 error checker.

    This error checker raises the following exceptions:
      - sw1 sw2
      - 62  82          WarningProcessingException
      - 64  00          ExecutionErrorException
      - 69  82          CheckingErrorException
      - 6A  80,84,89,8A CheckingErrorException

    This checker does not raise exceptions on undefined sw1 values, e.g.:
      - sw1 sw2
      - 63  any
      - 6F  any

    and on undefined sw2 values, e.g.:
      - sw1 sw2
      - 62  81 83
      - 64  any except 00


    Use another checker in the error checking chain, e.g., the
    ISO7816_4SW1ErrorChecker or ISO7816_4ErrorChecker, to raise
    exceptions on these undefined values.
    """

    def __call__(self, data, sw1, sw2):
        """Called to test data, sw1 and sw2 for error.

        @param data:       apdu response data
        @param sw1, sw2:   apdu data status words

        Derived classes must raise a L{smartcard.sw.SWException} upon error."""
        if sw1 in iso7816_9SW:
            exception, sw2dir = iso7816_9SW[sw1]
            if type(sw2dir) == type({}):
                try:
                    message = sw2dir[sw2]
                    raise exception(data, sw1, sw2, message)
                except KeyError:
                    pass


if __name__ == '__main__':
    """Small sample illustrating the use of ISO7816_9ErrorChecker."""
    ecs = ISO7816_9ErrorChecker()
    ecs([], 0x90, 0x00)
    ecs([], 0x6a, 0x81)
    try:
        ecs([], 0x6A, 0x8A)
    except smartcard.sw.SWExceptions.CheckingErrorException as e:
        print(str(e) + " {:x} {:x}".format(e.sw1, e.sw2))
