| #!/usr/bin/env python |
| # -*- coding: utf-8 -*- |
| |
| """ pySim: PCSC reader transport link |
| """ |
| |
| # |
| # Copyright (C) 2009-2010 Sylvain Munaut <tnt@246tNt.com> |
| # Copyright (C) 2010 Harald Welte <laforge@gnumonks.org> |
| # |
| # 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 2 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 NoCardException |
| from smartcard.System import readers |
| from smartcard.CardConnectionObserver import ConsoleCardConnectionObserver |
| |
| from pySim.exceptions import NoCardError |
| from pySim.utils import h2i, i2h |
| |
| |
| class PcscSimLink(object): |
| |
| def __init__(self, reader_number=0, observer=0): |
| r = readers(); |
| try: |
| self._con = r[reader_number].createConnection() |
| if (observer): |
| observer = ConsoleCardConnectionObserver() |
| self._con.addObserver(observer) |
| self._con.connect() |
| #print r[reader_number], b2h(self._con.getATR()) |
| except NoCardException: |
| raise NoCardError() |
| |
| def __del__(self): |
| self._con.disconnect() |
| return |
| |
| def reset_card(self): |
| self._con.disconnect() |
| try: |
| self._con.connect() |
| except NoCardException: |
| raise NoCardError() |
| return 1 |
| |
| def send_apdu_raw(self, pdu): |
| """send_apdu_raw(pdu): Sends an APDU with minimal processing |
| |
| pdu : string of hexadecimal characters (ex. "A0A40000023F00") |
| return : tuple(data, sw), where |
| data : string (in hex) of returned data (ex. "074F4EFFFF") |
| sw : string (in hex) of status word (ex. "9000") |
| """ |
| apdu = h2i(pdu) |
| |
| data, sw1, sw2 = self._con.transmit(apdu) |
| |
| sw = [sw1, sw2] |
| |
| # Return value |
| return i2h(data), i2h(sw) |
| |
| def send_apdu(self, pdu): |
| """send_apdu(pdu): Sends an APDU and auto fetch response data |
| |
| pdu : string of hexadecimal characters (ex. "A0A40000023F00") |
| return : tuple(data, sw), where |
| data : string (in hex) of returned data (ex. "074F4EFFFF") |
| sw : string (in hex) of status word (ex. "9000") |
| """ |
| data, sw = self.send_apdu_raw(pdu) |
| |
| if (sw is not None) and (sw[0:2] == '9f'): |
| pdu_gr = pdu[0:2] + 'c00000' + sw[2:4] |
| data, sw = self.send_apdu_raw(pdu_gr) |
| |
| return data, sw |
| |
| def send_apdu_checksw(self, pdu, sw="9000"): |
| """send_apdu_checksw(pdu,sw): Sends an APDU and check returned SW |
| |
| pdu : string of hexadecimal characters (ex. "A0A40000023F00") |
| sw : string of 4 hexadecimal characters (ex. "9000") |
| return : tuple(data, sw), where |
| data : string (in hex) of returned data (ex. "074F4EFFFF") |
| sw : string (in hex) of status word (ex. "9000") |
| """ |
| rv = self.send_apdu(pdu) |
| if sw.lower() != rv[1]: |
| raise RuntimeError("SW match failed ! Expected %s and got %s." % (sw.lower(), rv[1])) |
| return rv |