def list_readers():
try:
return System.readers()
except ListReadersException:
# If the PCSC system has restarted the context might be stale, try
# forcing a new context (This happens on Windows if the last reader is
# removed):
PCSCContext.instance = None
return System.readers()
def _list_readers():
try:
return System.readers()
except ListReadersException:
# If the PCSC system has restarted the context might be stale, try
# forcing a new context (This happens on Windows if the last reader is
# removed):
PCSCContext.instance = None
return System.readers()
def do_list_readers(p, args):
readers = scsys.readers()
if len(readers) == 0:
print('No readers found.')
else:
for i, r in enumerate(readers):
print(f'#{i}: {str(r)}')
def _do_connect_and_select(p, args):
readers = scsys.readers()
if len(readers) == 0:
p.error('No readers found.')
reader = None
if args.reader is None:
reader = readers[0]
elif isinstance(args.reader, int):
if args.reader >= len(reader):
p.error(f'Invalid reader index {args.reader}')
return None
reader = readers[args.reader]
else:
for r in readers:
if str(r).beginswith(args.reader):
reader = r
break
if reader is None:
p.error(
f'Reader name {repr(args.reader)} does not match any connected readers.'
)
assert reader is not None
conn = reader.createConnection()
if args.debug:
observer = ConsoleCardConnectionObserver()
conn.addObserver(observer)
conn.connect()
_select(conn, args.aid)
return conn
def _enter_reading_cards(self):
self._setup_card_monitor_and_observer()
tasks.blipper_reading_cards.delay()
while len(scsystem.readers()) != 0:
sleep(1)
self._tear_down_card_monitor_and_observer()
self._enter_state(STATE_WAITING_FOR_READER)
def open_scard(name='Yubikey'):
name = name.lower()
for reader in System.readers():
if name in reader.name.lower():
conn = reader.createConnection()
try:
conn.connect()
return ScardDevice(conn)
except SmartcardException:
pass
def open_scard(name='Yubikey'):
name = name.lower()
for reader in System.readers():
if name in reader.name.lower():
conn = reader.createConnection()
try:
conn.connect()
return ScardDevice(conn)
except SmartcardException:
pass
def open_device():
for reader in System.readers():
if reader.name.lower().startswith('yubico yubikey'):
try:
conn = reader.createConnection()
conn.connect()
except CardConnectionException as e:
if 'Sharing violation' in str(e) and kill_scdaemon():
return open_device()
raise
return CCIDDriver(conn, reader.name)
def showReaders():
readers = st.listReaders()
print 'All smart card readers : '
i = 0
print '%6s | %-s' % ('Index ','ReaderName')
print '-'*(len('Index | ')+len('ReaderName'))
while i < len(readers):
print '[%4d] | %-s' % (i, readers[i])
i += 1
print '-'*(len('Index | ')+len('ReaderName'))
return readers
def __init__(self, reader_name, callback, parent=None):
super(CardWatcher, self).__init__(parent)
self._status = CardStatus.NoCard
self.reader_name = reader_name
self._callback = callback or (lambda _: _)
self._reader = None
self._reader_observer = _CcidReaderObserver(self)
self._card_observer = _CcidCardObserver(self)
try:
self._update(System.readers(), [])
except EstablishContextException:
pass # No PC/SC context!
def _enter_initial(self):
initial_readers = scsystem.readers()
log.info('connected readers: %r' % initial_readers)
tasks.blipper_ready.delay()
try:
if len(initial_readers) == 0:
initial_state = STATE_WAITING_FOR_READER
elif len(initial_readers) == 1:
initial_state = STATE_READING_CARDS
else:
err_msg = '%d readers connected' % len(initial_readers)
raise CardReaderError(err_msg)
self._enter_state(initial_state)
except KeyboardInterrupt:
log.info('user exit')
self._enter_state(STATE_EXIT)
$NetBSD: patch-ykman_driver__ccid.py,v 1.1 2020/08/17 07:02:25 riastradh Exp $
Avoid crashing if pcscd is missing.
--- ykman/driver_ccid.py.orig 2020-01-29 07:32:03.000000000 +0000
+++ ykman/driver_ccid.py
@@ -36,6 +36,7 @@ from enum import IntEnum, unique
from binascii import b2a_hex
from smartcard import System
from smartcard.Exceptions import CardConnectionException
+from smartcard.pcsc.PCSCExceptions import EstablishContextException
from smartcard.pcsc.PCSCExceptions import ListReadersException
from smartcard.pcsc.PCSCContext import PCSCContext
from .driver import AbstractDriver, ModeSwitchError, NotSupportedError
@@ -320,6 +321,8 @@ def list_readers():
# removed):
PCSCContext.instance = None
return System.readers()
+ except EstablishContextException:
+ return []
def open_devices(name_filter=YK_READER_NAME):
def _enter_waiting_for_reader(self):
tasks.blipper_waiting.delay()
while len(scsystem.readers()) == 0:
sleep(1)
self._enter_state(STATE_READING_CARDS)
