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https://gitea.osmocom.org/sim-card/pysim.git
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4af63dc760
When we initialize the reader, we currently tell only which type of interface we are using, but we do not print the reader number or the device path. Let's extend the messages so that the path is printed. To prevent problems with integration-tests, let's also add an environment variable that we can use to detect when pySim runs inside a integration-test. Related: OS#6210 Change-Id: Ibe296d51885b1ef5f9c9ecaf1d28da52014dcc4b
110 lines
3.6 KiB
Python
110 lines
3.6 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2009-2010 Sylvain Munaut <tnt@246tNt.com>
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# Copyright (C) 2010 Harald Welte <laforge@gnumonks.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import argparse
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import os
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from typing import Optional
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from smartcard.CardConnection import CardConnection
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from smartcard.CardRequest import CardRequest
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from smartcard.Exceptions import NoCardException, CardRequestTimeoutException, CardConnectionException, CardConnectionException
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from smartcard.System import readers
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from pySim.exceptions import NoCardError, ProtocolError, ReaderError
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from pySim.transport import LinkBase
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from pySim.utils import h2i, i2h, Hexstr, ResTuple
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class PcscSimLink(LinkBase):
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""" pySim: PCSC reader transport link."""
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def __init__(self, reader_number: int = 0, **kwargs):
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super().__init__(**kwargs)
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if os.environ.get('PYSIM_INTEGRATION_TEST') == "1":
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print("Using PC/SC reader interface")
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else:
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print("Using PC/SC reader number %u" % reader_number)
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r = readers()
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if reader_number >= len(r):
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raise ReaderError('No reader found for number %d' % reader_number)
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self._reader = r[reader_number]
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self._con = self._reader.createConnection()
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self._reader_number = reader_number
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def __del__(self):
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try:
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# FIXME: this causes multiple warnings in Python 3.5.3
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self._con.disconnect()
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except:
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pass
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return
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def wait_for_card(self, timeout: Optional[int] = None, newcardonly: bool = False):
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cr = CardRequest(readers=[self._reader],
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timeout=timeout, newcardonly=newcardonly)
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try:
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cr.waitforcard()
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except CardRequestTimeoutException:
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raise NoCardError()
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self.connect()
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def connect(self):
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try:
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# To avoid leakage of resources, make sure the reader
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# is disconnected
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self.disconnect()
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# Explicitly select T=0 communication protocol
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self._con.connect(CardConnection.T0_protocol)
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except CardConnectionException:
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raise ProtocolError()
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except NoCardException:
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raise NoCardError()
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def get_atr(self) -> Hexstr:
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return self._con.getATR()
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def disconnect(self):
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self._con.disconnect()
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def reset_card(self):
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self.disconnect()
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self.connect()
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return 1
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def _send_apdu_raw(self, pdu: Hexstr) -> ResTuple:
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apdu = h2i(pdu)
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data, sw1, sw2 = self._con.transmit(apdu)
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sw = [sw1, sw2]
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# Return value
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return i2h(data), i2h(sw)
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def __str__(self) -> str:
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return "PCSC:%u[%s]" % (self._reader_number, self._reader)
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@staticmethod
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def argparse_add_reader_args(arg_parser: argparse.ArgumentParser):
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pcsc_group = arg_parser.add_argument_group('PC/SC Reader')
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pcsc_group.add_argument('-p', '--pcsc-device', type=int, dest='pcsc_dev', metavar='PCSC', default=None,
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help='PC/SC reader number to use for SIM access')
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