Thread: [Pyscard-devel] SF.net SVN: pyscard:[249] trunk/pyscard/src/smartcard/Examples/scard-api/ sample_pi

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Revision: 249
          http://pyscard.svn.sourceforge.net/pyscard/?rev=249&view=rev
Author:   ludov
Date:     2009-01-13 08:51:04 +0000 (Tue, 13 Jan 2009)

Log Message:
-----------
sample to use a pinpad reader

Added Paths:
-----------
    trunk/pyscard/src/smartcard/Examples/scard-api/sample_pinpad.py

Added: trunk/pyscard/src/smartcard/Examples/scard-api/sample_pinpad.py
===================================================================

--- trunk/pyscard/src/smartcard/Examples/scard-api/sample_pinpad.py	                        (rev 0)
+++ trunk/pyscard/src/smartcard/Examples/scard-api/sample_pinpad.py	2009-01-13 08:51:04 UTC (rev 249)
@@ -0,0 +1,125 @@
+#! /usr/bin/env python
+"""
+Sample for python PCSC wrapper module: send a Control Code to a card or
+reader
+
+__author__ = "Ludovic Rousseau"
+
+Copyright 2009 Ludovic Rousseau
+Author: Ludovic Rousseau, mailto:lud...@fr...
+
+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.scard import *
+from smartcard.util import toASCIIBytes
+
+def candoverifypin(hCard):
+    FEATURE_VERIFY_PIN_DIRECT = 6
+    return parse_get_feature_request(hCard, FEATURE_VERIFY_PIN_DIRECT)
+
+def candomodifypin(hCard):
+    FEATURE_MODIFY_PIN_DIRECT = 7
+    return parse_get_feature_request(hCard, FEATURE_MODIFY_PIN_DIRECT)
+
+def parse_get_feature_request(hCard, feature):
+    # check the reader can do a verify pin
+    CM_IOCTL_GET_FEATURE_REQUEST = SCARD_CTL_CODE(3400)
+    hresult, response = SCardControl(hcard, CM_IOCTL_GET_FEATURE_REQUEST, [])
+    if hresult!=SCARD_S_SUCCESS:
+        raise error, 'SCardControl failed: ' + SCardGetErrorMessage(hresult)
+    print response
+    while (len(response) > 0):
+        tag = response[0]
+        if (feature == tag):
+            return (((((response[2]<<8) + response[3])<<8) + response[4])<<8) + response[5]
+        response = response[6:]
+
+def verifypin(hCard, control=None):
+    if None==control:
+        control = candoverifypin(hCard)
+        if (None == control):
+            raise error, "Not a pinpad"
+    hresult, response = SCardControl(hcard, control, [])
+    if hresult!=SCARD_S_SUCCESS:
+        raise error, 'SCardControl failed: ' + SCardGetErrorMessage(hresult)
+    return hresult, response
+
+try:
+    hresult, hcontext = SCardEstablishContext( SCARD_SCOPE_USER )
+    if hresult!=0:
+        raise  'Failed to establish context: ' + SCardGetErrorMessage(hresult)
+    print 'Context established!'
+
+    try:
+        hresult, readers = SCardListReaders( hcontext, [] )
+        if hresult!=0:
+            raise error, 'Failed to list readers: ' + SCardGetErrorMessage(hresult)
+        print 'PCSC Readers:', readers
+
+        if len(readers)<1:
+            raise error, 'No smart card readers'
+
+        for zreader in readers:
+
+            print 'Trying to Control reader:', zreader
+
+            try:
+                hresult, hcard, dwActiveProtocol = SCardConnect(
+                    hcontext, zreader, SCARD_SHARE_DIRECT, SCARD_PROTOCOL_T0 )
+                if hresult!=0:
+                    raise error, 'Unable to connect: ' + SCardGetErrorMessage(hresult)
+                print 'Connected with active protocol', dwActiveProtocol
+
+                try:
+                    cmd_verify = candoverifypin(hcard)
+                    if (cmd_verify):
+                        print "can do verify pin: 0x%08X" % cmd_verify
+
+                    cmd_modify = candomodifypin(hcard)
+                    if (cmd_modify):
+                        print "can do modify pin: 0x%08X" % cmd_modify
+
+                    (hresult, response) = verifypin(hcard, cmd_verify)
+                    r = ""
+                    for i in xrange(len(response)):
+                        r += "%c" % response[i]
+                    print 'Control:', r
+                finally:
+                    hresult = SCardDisconnect( hcard, SCARD_UNPOWER_CARD )
+                    if hresult!=0:
+                        raise error, 'Failed to disconnect: ' + SCardGetErrorMessage(hresult)
+                    print 'Disconnected'
+
+            except error, (message):
+                print error, message
+
+    finally:
+        hresult = SCardReleaseContext( hcontext )
+        if hresult!=SCARD_S_SUCCESS:
+            raise  'Failed to release context: ' + SCardGetErrorMessage(hresult)
+        print 'Released context.'
+
+except:
+    import sys
+    print sys.exc_info()[0], ':', sys.exc_info()[1]
+
+import sys
+if 'win32'==sys.platform:
+    print 'press Enter to continue'
+    sys.stdin.read(1)
+


Property changes on: trunk/pyscard/src/smartcard/Examples/scard-api/sample_pinpad.py
___________________________________________________________________
Added: svn:executable
   + *


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Thread: [Pyscard-devel] SF.net SVN: pyscard:[249] trunk/pyscard/src/smartcard/Examples/scard-api/ sample_pi

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