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#! /usr/bin/env python3
"""
# control_switch_interface.py: switch interface on the GemProx DU
# Copyright (C) 2009-2010 Ludovic Rousseau
"""
#
# This program 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.
#
# This program 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 smartcard.Exceptions import SmartcardException
from smartcard.pcsc.PCSCPart10 import SCARD_CTL_CODE
from smartcard.scard import SCARD_LEAVE_CARD, SCARD_SHARE_DIRECT
from smartcard.System import readers
IOCTL_SMARTCARD_VENDOR_IFD_EXCHANGE = SCARD_CTL_CODE(1)
def switch_interface(my_interface):
"""
switch from contact to contactless (or reverse) on a GemProx DU reader
"""
for reader in readers():
cardConnection = reader.createConnection()
cardConnection.connect(mode=SCARD_SHARE_DIRECT, disposition=SCARD_LEAVE_CARD)
switch_interface_cmd = [0x52, 0xF8, 0x04, 0x01, 0x00, my_interface]
print("Reader:", reader, "=>", end=" ")
try:
res = cardConnection.control(
IOCTL_SMARTCARD_VENDOR_IFD_EXCHANGE, switch_interface_cmd
)
except SmartcardException as e:
print("FAILED", e)
else:
if res != [0, 0, 0, 0]:
print("Failed: ", end="")
err = res[0] * 256 + res[1]
if err == 0xFF83:
print("Wrong data parameters")
elif err == 0xFF84:
print("Wrong command bytes")
else:
print("Unknown error:", [hex(x) for x in res])
else:
print("Success")
if __name__ == "__main__":
import sys
# 01h = Switch to contactless interface
# 02h = Switch to contact interface
# switch to contactless by default
interface = 0x01
if len(sys.argv) > 1:
interface = int(sys.argv[1])
switch_interface(interface)
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