16375184806

Committed 18 Jul 2025 04:07PM UTC coverage: 66.048% (+0.08%) from 65.964%

Build # 16375184806

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push

github

Committed by

LudovicRousseau

Commit Message

Fix pylint warning: R0401

smartcard/reader/Reader.py:1:0: R0401: Cyclic import (smartcard.pcsc.PCSCCardConnection -> smartcard.pcsc.PCSCPart10 -> smartcard.pcsc.PCSCReader) (cyclic-import)
smartcard/reader/Reader.py:1:0: R0401: Cyclic import (smartcard.pcsc.PCSCCardConnection -> smartcard.pcsc.PCSCReader) (cyclic-import)

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0.0

/src/smartcard/ExclusiveTransmitCardConnection.py

"""Sample CardConnectionDecorator that provides exclusive transmit()

__author__ = "https://www.gemalto.com/"

Copyright 2001-2012 gemalto
Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com

This file is part of pyscard.

pyscard is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

pyscard 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with pyscard; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
"""

import smartcard.pcsc
from smartcard.CardConnectionDecorator import CardConnectionDecorator
from smartcard.Exceptions import CardConnectionException
from smartcard.scard import (
    SCARD_LEAVE_CARD,
    SCARD_S_SUCCESS,
    SCardBeginTransaction,
    SCardEndTransaction,
    SCardGetErrorMessage,
)


class ExclusiveTransmitCardConnection(CardConnectionDecorator):
    """This decorator uses
    L{SCardBeginTransaction}/L{SCardEndTransaction} to preserve other
    processes of threads to access the card during transmit()."""

    def __init__(self, cardconnection):
        CardConnectionDecorator.__init__(self, cardconnection)

    def lock(self):
        """Lock card with L{SCardBeginTransaction}."""

        # pylint: disable=duplicate-code

        component = self.component
        while True:
            if isinstance(
                component, smartcard.pcsc.PCSCCardConnection.PCSCCardConnection
            ):
                hresult = SCardBeginTransaction(component.hcard)
                if SCARD_S_SUCCESS != hresult:
                    raise CardConnectionException(
                        "Failed to lock with SCardBeginTransaction: "
                        + SCardGetErrorMessage(hresult)
                    )
                break
            if hasattr(component, "component"):
                component = component.component
            else:
                break

    def unlock(self):
        """Unlock card with L{SCardEndTransaction}."""

        # pylint: disable=duplicate-code

        component = self.component
        while True:
            if isinstance(
                component, smartcard.pcsc.PCSCCardConnection.PCSCCardConnection
            ):
                hresult = SCardEndTransaction(component.hcard, SCARD_LEAVE_CARD)
                if SCARD_S_SUCCESS != hresult:
                    raise CardConnectionException(
                        "Failed to unlock with SCardEndTransaction: "
                        + SCardGetErrorMessage(hresult)
                    )
                break
            if hasattr(component, "component"):
                component = component.component
            else:
                break

    def transmit(self, command, protocol=None):
        """Gain exclusive access to card during APDU transmission for if this
        decorator decorates a PCSCCardConnection."""
        data, sw1, sw2 = CardConnectionDecorator.transmit(self, command, protocol)
        return data, sw1, sw2

1	"""Sample CardConnectionDecorator that provides exclusive transmit()
2
3	__author__ = "https://www.gemalto.com/"
4
5	Copyright 2001-2012 gemalto
6	Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com
7
8	This file is part of pyscard.
9
10	pyscard is free software; you can redistribute it and/or modify
11	it under the terms of the GNU Lesser General Public License as published by
12	the Free Software Foundation; either version 2.1 of the License, or
13	(at your option) any later version.
14
15	pyscard is distributed in the hope that it will be useful,
16	but WITHOUT ANY WARRANTY; without even the implied warranty of
17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18	GNU Lesser General Public License for more details.
19
20	You should have received a copy of the GNU Lesser General Public License
21	along with pyscard; if not, write to the Free Software
22	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23	"""
24
25	import smartcard.pcsc	×
26	from smartcard.CardConnectionDecorator import CardConnectionDecorator	×
27	from smartcard.Exceptions import CardConnectionException	×
28	from smartcard.scard import (	×
29	SCARD_LEAVE_CARD,
30	SCARD_S_SUCCESS,
31	SCardBeginTransaction,
32	SCardEndTransaction,
33	SCardGetErrorMessage,
34	)
35
36
37	class ExclusiveTransmitCardConnection(CardConnectionDecorator):	×
38	"""This decorator uses
39	L{SCardBeginTransaction}/L{SCardEndTransaction} to preserve other
40	processes of threads to access the card during transmit()."""
41
42	def __init__(self, cardconnection):	×
43	CardConnectionDecorator.__init__(self, cardconnection)	×
44
45	def lock(self):	×
46	"""Lock card with L{SCardBeginTransaction}."""
47
48	# pylint: disable=duplicate-code
49
50	component = self.component	×
51	while True:
52	if isinstance(	×
53	component, smartcard.pcsc.PCSCCardConnection.PCSCCardConnection
54	):
55	hresult = SCardBeginTransaction(component.hcard)	×
56	if SCARD_S_SUCCESS != hresult:	×
57	raise CardConnectionException(	×
58	"Failed to lock with SCardBeginTransaction: "
59	+ SCardGetErrorMessage(hresult)
60	)
61	break	×
62	if hasattr(component, "component"):	×
63	component = component.component	×
64	else:
65	break	×
66
67	def unlock(self):	×
68	"""Unlock card with L{SCardEndTransaction}."""
69
70	# pylint: disable=duplicate-code
71
72	component = self.component	×
73	while True:
74	if isinstance(	×
75	component, smartcard.pcsc.PCSCCardConnection.PCSCCardConnection
76	):
77	hresult = SCardEndTransaction(component.hcard, SCARD_LEAVE_CARD)	×
78	if SCARD_S_SUCCESS != hresult:	×
79	raise CardConnectionException(	×
80	"Failed to unlock with SCardEndTransaction: "
81	+ SCardGetErrorMessage(hresult)
82	)
83	break	×
84	if hasattr(component, "component"):	×
85	component = component.component	×
86	else:
87	break	×
88
89	def transmit(self, command, protocol=None):	×
90	"""Gain exclusive access to card during APDU transmission for if this
91	decorator decorates a PCSCCardConnection."""
92	data, sw1, sw2 = CardConnectionDecorator.transmit(self, command, protocol)	×
93	return data, sw1, sw2	×

LudovicRousseau / pyscard / 16375184806

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