Adding tests for OpenPGP.

All tests are taken from gnuk. Reader is migrated from pyusb to pyscard.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

tests/card_reader.py

@@ -0,0 +1,67 @@
+"""
+card_reader.py - a library for smartcard reader
+
+Copyright (C) 2016, 2017, 2019  Free Software Initiative of Japan
+Author: NIIBE Yutaka <gniibe@fsij.org>
+
+This file is a part of Gnuk, a GnuPG USB Token implementation.
+
+Gnuk is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Gnuk 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 General Public
+License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+
+from struct import pack
+from binascii import hexlify
+import sys
+
+try:
+    from smartcard.CardType import AnyCardType
+    from smartcard.CardRequest import CardRequest
+    from smartcard.Exceptions import CardRequestTimeoutException, CardConnectionException
+except ModuleNotFoundError:
+    print('ERROR: smarctard module not found! Install pyscard package.\nTry with `pip install pyscard`')
+    sys.exit(-1)
+
+class CardReader(object):
+    def __init__(self):
+        """
+        __init__() -> None
+        Initialize the reader
+        device: usb.core.Device object.
+        """
+
+        cardtype = AnyCardType()
+        try:
+            # request card insertion
+            cardrequest = CardRequest(timeout=10, cardType=cardtype)
+            self.__card = cardrequest.waitforcard()
+
+            # connect to the card and perform a few transmits
+            self.__card.connection.connect()
+
+        except CardRequestTimeoutException:
+            raise Exception('time-out: no card inserted during last 10s')
+
+    def reset_device(self):
+        self.__card.connection.reconnect()
+
+    def send_cmd(self, cmd):
+        response, sw1, sw2 = self.__card.connection.transmit(list(bytearray(cmd)))
+        return bytes(response + [sw1,sw2])
+
+    def ccid_power_off(self):
+        self.__card.connection.disconnect()
+
+def get_ccid_device():
+    return CardReader()
+