[Pyscard-devel] SF.net SVN: pyscard:[605] trunk/contrib/parseATR/parseATR.py

[<lu...@us...>]

Revision: 605
          http://pyscard.svn.sourceforge.net/pyscard/?rev=605&view=rev
Author:   ludov
Date:     2012-09-29 12:09:39 +0000 (Sat, 29 Sep 2012)
Log Message:
-----------
Catch a IndexError exception

Some ATR are bogus. For example: 3B EF 00 FF 81 31 00 45 65 63 is bogus.

If we pad the ATR with 00 we have:
 ATR: 3B EF 00 FF 81 31 00 45 65 63 00 00 00 00 00 00 00 00 00 00 00 00 00
 TS = 0x3B --> Direct Convention
 T0 = 0xEF --> Y(1): b1110, K: 15 (historical bytes)
  TB(1) = 0x00 --> VPP is not electrically connected
  TC(1) = 0xFF --> Extra guard time: 255 (special value)
  TD(1) = 0x81 --> Y(i+1) = b1000, Protocol T=1
 ----
  TD(2) = 0x31 --> Y(i+1) = b0011, Protocol T=1
 ----
  TA(3) = 0x00 --> IFSC: 0
  TB(3) = 0x45 --> Block Waiting Integer: 4 - Character Waiting Integer: 5
 ----
 Historical bytes --> 65 63 00 00 00 00 00 00 00 00 00 00 00 00 00
   Category indicator byte: 0x65 -->  (proprietary format) equivalent ASCII string: "c............."
 TCK = 0x-1  --> WRONG CHECKSUM, expected 0xE3
 Possibly identified card: 
 	3B EF 00 FF 81 31 .. 45 65 63
 	Debit card (Germany): ec-cash, GeldKarte(DEM), Maestro, Cirrus

The ATR do NOT contain 15 of history.

Modified Paths:
--------------
    trunk/contrib/parseATR/parseATR.py

Modified: trunk/contrib/parseATR/parseATR.py
===================================================================
--- trunk/contrib/parseATR/parseATR.py	2012-09-28 17:12:42 UTC (rev 604)
+++ trunk/contrib/parseATR/parseATR.py	2012-09-29 12:09:39 UTC (rev 605)
@@ -137,7 +137,10 @@
     # Store TCK
     last = pointer + 1 + hb_length
     if "TCK" in atr:
-        atr["TCK"] = atr_txt[last]
+        try:
+            atr["TCK"] = atr_txt[last]
+        except IndexError:
+            atr["TCK"] = -1;
         last += 1
 
     if len(atr_txt) > last:

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