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Source Code for Module smartcard.sw.ISO7816_9ErrorChecker

 1  """ISO7816-9 error checker. 
 2   
 3  __author__ = "http://www.gemalto.com" 
 4   
 5  Copyright 2001-2011 gemalto 
 6  Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com 
 7   
 8  This file is part of pyscard. 
 9   
10  pyscard is free software; you can redistribute it and/or modify 
11  it under the terms of the GNU Lesser General Public License as published by 
12  the Free Software Foundation; either version 2.1 of the License, or 
13  (at your option) any later version. 
14   
15  pyscard is distributed in the hope that it will be useful, 
16  but WITHOUT ANY WARRANTY; without even the implied warranty of 
17  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
18  GNU Lesser General Public License for more details. 
19   
20  You should have received a copy of the GNU Lesser General Public License 
21  along with pyscard; if not, write to the Free Software 
22  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA 
23  """ 
24   
25  from smartcard.sw.ErrorChecker import ErrorChecker 
26  import smartcard.sw.SWExceptions 
27   
28  iso7816_9SW = { 
29      0x62: (smartcard.sw.SWExceptions.WarningProcessingException, 
30             {0x82: "End of file/record reached"}), 
31   
32      0x64: (smartcard.sw.SWExceptions.ExecutionErrorException, 
33             {0x00: "Execution error"}), 
34   
35      0x69: (smartcard.sw.SWExceptions.CheckingErrorException, 
36             {0x82: "Security status not satisfied"}), 
37   
38      0x6A: (smartcard.sw.SWExceptions.CheckingErrorException, 
39             {0x80: "Incorrect parameters in data field", 
40              0x84: "Not enough memory space", 
41              0x89: "File already exists", 
42              0x8A: "DF name already exists"}), 
43  } 
44   
45   
46 -class ISO7816_9ErrorChecker(ErrorChecker): 
47      """ISO7816-8 error checker. 
48   
49      This error checker raises the following exceptions: 
50      - sw1 sw2 
51      - 62  82          WarningProcessingException 
52      - 64  00          ExecutionErrorException 
53      - 69  82          CheckingErrorException 
54      - 6A  80,84,89,8A CheckingErrorException 
55   
56      This checker does not raise exceptions on undefined sw1 values, e.g.: 
57      - sw1 sw2 
58      - 63  any 
59      - 6F  any 
60   
61      and on undefined sw2 values, e.g.: 
62      - sw1 sw2 
63      - 62  81 83 
64      - 64  any except 00 
65   
66   
67      Use another checker in the error checking chain, e.g., the 
68      ISO7816_4SW1ErrorChecker or ISO7816_4ErrorChecker, to raise 
69      exceptions on these undefined values. 
70      """ 
71   
72 -    def __call__(self, data, sw1, sw2): 
73          """Called to test data, sw1 and sw2 for error. 
74   
75          @param data:       apdu response data 
76          @param sw1, sw2:   apdu data status words 
77   
78          Derived classes must raise a L{smartcard.sw.SWException} upon error.""" 
79          if iso7816_9SW.has_key(sw1): 
80              exception, sw2dir = iso7816_9SW[sw1] 
81              if type(sw2dir) == type({}): 
82                  try: 
83                      message = sw2dir[sw2] 
84                      raise exception(data, sw1, sw2, message) 
85                  except KeyError: 
86                      pass 
87   
88   
89  if __name__ == '__main__': 
90      """Small sample illustrating the use of ISO7816_9ErrorChecker.""" 
91      ecs = ISO7816_9ErrorChecker() 
92      ecs([], 0x90, 0x00) 
93      ecs([], 0x6a, 0x81) 
94      try: 
95          ecs([], 0x6A, 0x8A) 
96      except smartcard.sw.SWExceptions.CheckingErrorException, e: 
97          print e, "%x %x" % (e.sw1, e.sw2) 
98   

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