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https://gitea.osmocom.org/sim-card/pysim.git
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1f8acd9884
Unfortunately, Debian ships old Python (3.5 vs 3.8) and old pyscard (1.9.4 vs 1.9.9). Calling PCSCCardConnection.disconnect() from a destructor causes warnings about ignored exceptions: AttributeError: 'NoneType' object has no attribute 'disconnect' AttributeError: 'NoneType' object has no attribute 'setChanged' AttributeError: 'NoneType' object has no attribute 'SCardDisconnect' TypeError: 'NoneType' object is not callable All these exceptions happen in pyscard's own destructors. Change-Id: I9c644bc5fe9791b141a30bfc13647d77937a82ee
88 lines
2.3 KiB
Python
88 lines
2.3 KiB
Python
# -*- coding: utf-8 -*-
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""" pySim: PCSC reader transport link
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"""
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#
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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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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
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from smartcard.System import readers
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from pySim.exceptions import NoCardError, ProtocolError
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from pySim.transport import LinkBase
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from pySim.utils import h2i, i2h
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class PcscSimLink(LinkBase):
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def __init__(self, reader_number=0):
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r = readers()
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self._reader = r[reader_number]
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self._con = self._reader.createConnection()
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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=None, newcardonly=False):
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cr = CardRequest(readers=[self._reader], 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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# 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):
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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):
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"""see LinkBase.send_apdu_raw"""
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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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