def open_pyscard(name=None):
""" Open PC/SC reader using PyScard
If no reader name is given, try to open all available readers,
the first one that succeeds is chosen.
Args:
name (:obj:`str`): name of the reader as registered in the system
Returns:
:obj:`PyScardReader`: PyScard wrapper object
Raises:
RuntimeError exception if no reader can be opened
Various PyScard exceptions
"""
if name is not None:
return PySCardReader(PCSCReader(name).createConnection())
else:
readers = smartcard.System.readers()
for reader in readers:
try:
pyscardreader = PySCardReader(
PCSCReader(reader).createConnection())
except:
pass
else:
logger.debug("Open reader: %s", reader)
return pyscardreader
raise RuntimeError('No reader with card found. Available readers: ',
readers)
def testcase_addreadertogroup(self):
"""Test for adding readers to group"""
groups = PCSCReaderGroups()
newgroup = 'Pinpad$Readers'
groups.insert(0, newgroup)
for r in PCSCReader.readers('SCard$DefaultReaders'):
r.addtoreadergroup(newgroup)
self.assertEquals(PCSCReader.readers('SCard$DefaultReaders'), PCSCReader.readers(newgroup))
groups.pop(0)
self.assertEquals([], PCSCReader.readers(newgroup))
def create_connection(reader: PCSCReader) -> CardConnectionDecorator:
try:
connection = reader.createConnection()
connection.connect()
return connection
except NoCardException:
return None
except CardConnectionException:
return False
def testcase_removereaderfromgroup(self):
"""Test for removing readers from group"""
groups = PCSCReaderGroups().instance
newgroup = 'Pinpad$Readers'
groups.insert(0, newgroup)
for r in PCSCReader.readers('SCard$DefaultReaders'):
r.addtoreadergroup(newgroup)
self.assertEqual(PCSCReader.readers('SCard$DefaultReaders'),
PCSCReader.readers(newgroup))
for r in PCSCReader.readers('SCard$DefaultReaders'):
r.removefromreadergroup(newgroup)
self.assertEqual([], PCSCReader.readers(newgroup))
groups.pop(0)
self.assertEqual([], PCSCReader.readers(newgroup))
def testcase_removereaderfromgroup(self):
"""Test for removing readers from group"""
groups = PCSCReaderGroups().instance
newgroup = 'Pinpad$Readers'
groups.insert(0, newgroup)
for r in PCSCReader.readers('SCard$DefaultReaders'):
r.addtoreadergroup(newgroup)
self.assertEquals(
PCSCReader.readers(
'SCard$DefaultReaders'),
PCSCReader.readers(newgroup))
for r in PCSCReader.readers('SCard$DefaultReaders'):
r.removefromreadergroup(newgroup)
self.assertEquals([], PCSCReader.readers(newgroup))
groups.pop(0)
self.assertEquals([], PCSCReader.readers(newgroup))
# store the value in the dictionnary
try:
d[Properties[tag]] = data
except KeyError:
d["UNKNOWN"] = data
del tmp[0:2 + len]
return d
if __name__ == '__main__':
"""Small sample illustrating the use of PCSCPart10."""
from smartcard.pcsc.PCSCReader import PCSCReader
cc = PCSCReader.readers()[0].createConnection()
cc.connect(mode=SCARD_SHARE_DIRECT)
# print(cc.control(CM_IOCTL_GET_FEATURE_REQUEST))
features = getFeatureRequest(cc)
print(features)
print(hasFeature(features, FEATURE_VERIFY_PIN_START))
print(hasFeature(features, FEATURE_VERIFY_PIN_DIRECT))
properties = getPinProperties(cc)
print("\nPinProperties:")
for k, v in list(properties.items()):
print(" %s: %s" % (k, v))
print("\nTlvProperties:")
def waitforcard(self):
"""Wait for card insertion and returns a card service."""
AbstractCardRequest.waitforcard(self)
cardfound = False
# for non infinite timeout, a timer will signal
# the end of the time-out by setting the evt event
evt = threading.Event()
if INFINITE == self.timeout:
timertimeout = 1
else:
timertimeout = self.timeout
timer = threading.Timer(
timertimeout, signalEvent, [evt, INFINITE == self.timeout])
# create a dictionary entry for new readers
readerstates = {}
readernames = self.getReaderNames()
for reader in readernames:
if not reader in readerstates:
readerstates[reader] = (reader, SCARD_STATE_UNAWARE)
# remove dictionary entry for readers that disappeared
for oldreader in readerstates.keys():
if oldreader not in readernames:
del readerstates[oldreader]
# call SCardGetStatusChange only if we have some readers
if {} != readerstates:
hresult, newstates = SCardGetStatusChange(
self.hcontext, 0, readerstates.values())
else:
hresult = 0
newstates = []
# we can expect normally time-outs or reader
# disappearing just before the call
# otherwise, raise execption on error
if 0 != hresult and \
SCARD_E_TIMEOUT != hresult and \
SCARD_E_UNKNOWN_READER != hresult:
raise CardRequestException(
'Failed to SCardGetStatusChange ' + \
SCardGetErrorMessage(hresult))
# in case of timeout or reader disappearing,
# the content of the states is useless
# in which case we clear the changed bit
if SCARD_E_TIMEOUT == hresult or SCARD_E_UNKNOWN_READER == hresult:
for state in newstates:
state[1] = state[1] & (0xFFFFFFFF ^ SCARD_STATE_CHANGED)
# update readerstate
for state in newstates:
readername, eventstate, atr = state
readerstates[readername] = (readername, eventstate)
# if a new card is not requested, just return the first available
if not self.newcardonly:
for state in newstates:
readername, eventstate, atr = state
if eventstate & SCARD_STATE_PRESENT:
reader = PCSCReader(readername)
if self.cardType.matches(atr, reader):
if self.cardServiceClass.supports('dummy'):
cardfound = True
return self.cardServiceClass(
reader.createConnection())
timerstarted = False
while not evt.isSet() and not cardfound:
if not timerstarted:
timerstarted = True
timer.start()
time.sleep(self.pollinginterval)
# create a dictionary entry for new readers
readernames = self.getReaderNames()
for reader in readernames:
if not reader in readerstates:
readerstates[reader] = (reader, SCARD_STATE_UNAWARE)
# remove dictionary entry for readers that disappeared
for oldreader in readerstates.keys():
if oldreader not in readernames:
del readerstates[oldreader]
# wait for card insertion
if {} != readerstates:
hresult, newstates = SCardGetStatusChange(
self.hcontext, 0, readerstates.values())
else:
hresult = SCARD_E_TIMEOUT
newstates = []
# time-out
if SCARD_E_TIMEOUT == hresult:
if evt.isSet():
raise CardRequestTimeoutException()
# reader vanished before or during the call
elif SCARD_E_UNKNOWN_READER == hresult:
pass
# some error happened
elif 0 != hresult:
timer.cancel()
raise CardRequestException(
'Failed to get status change ' + \
SCardGetErrorMessage(hresult))
# something changed!
else:
# check if we have to return a match, i.e.
# if no new card in inserted and there is a card found
# or if a new card is requested, and there is a change+present
for state in newstates:
readername, eventstate, atr = state
r, oldstate = readerstates[readername]
# the status can change on a card already inserted, e.g.
# unpowered, in use, ...
# if a new card is requested, clear the state changed bit
# if the card was already inserted and is still inserted
if self.newcardonly:
if oldstate & SCARD_STATE_PRESENT and \
eventstate & \
(SCARD_STATE_CHANGED | SCARD_STATE_PRESENT):
eventstate = eventstate & \
(0xFFFFFFFF ^ SCARD_STATE_CHANGED)
if (self.newcardonly and \
eventstate & SCARD_STATE_PRESENT and \
eventstate & SCARD_STATE_CHANGED) or \
(not self.newcardonly and \
eventstate & SCARD_STATE_PRESENT):
reader = PCSCReader(readername)
if self.cardType.matches(atr, reader):
if self.cardServiceClass.supports('dummy'):
cardfound = True
timer.cancel()
return self.cardServiceClass(
reader.createConnection())
# update state dictionary
readerstates[readername] = (readername, eventstate)
if evt.isSet():
raise CardRequestTimeoutException()
data = [(x + 256) % 256 for x in response]
return list(data)
def doGetAttrib(self, attribId):
"""get an attribute
attribId: Identifier for the attribute to get
return: response are the attribute byte array
"""
CardConnection.doGetAttrib(self, attribId)
hresult, response = SCardGetAttrib(self.hcard, attribId)
if hresult != 0:
raise SmartcardException('Failed to getAttrib ' +
SCardGetErrorMessage(hresult))
return response
if __name__ == '__main__':
"""Small sample illustrating the use of CardConnection."""
SELECT = [0xA0, 0xA4, 0x00, 0x00, 0x02]
DF_TELECOM = [0x7F, 0x10]
from smartcard.pcsc.PCSCReader import PCSCReader
from smartcard.pcsc.PCSCPart10 import CM_IOCTL_GET_FEATURE_REQUEST
cc = PCSCReader.readers()[0].createConnection()
cc.connect()
print("%r %x %x" % cc.transmit(SELECT + DF_TELECOM))
print(cc.control(CM_IOCTL_GET_FEATURE_REQUEST, []))
def waitforcard(self):
"""Wait for card insertion and returns a card service."""
AbstractCardRequest.waitforcard(self)
cardfound = False
# for non infinite timeout, a timer will signal
# the end of the time-out by setting the evt event
evt = threading.Event()
if INFINITE == self.timeout:
timertimeout = 1
else:
timertimeout = self.timeout
timer = threading.Timer(timertimeout, signalEvent,
[evt, INFINITE == self.timeout])
# create a dictionary entry for new readers
readerstates = {}
readernames = self.getReaderNames()
for reader in readernames:
if not reader in readerstates:
readerstates[reader] = (reader, SCARD_STATE_UNAWARE)
# remove dictionary entry for readers that disappeared
for oldreader in readerstates.keys():
if oldreader not in readernames:
del readerstates[oldreader]
# call SCardGetStatusChange only if we have some readers
if {} != readerstates:
hresult, newstates = SCardGetStatusChange(self.hcontext, 0,
readerstates.values())
else:
hresult = 0
newstates = []
# we can expect normally time-outs or reader
# disappearing just before the call
# otherwise, raise execption on error
if 0 != hresult and \
SCARD_E_TIMEOUT != hresult and \
SCARD_E_UNKNOWN_READER != hresult:
raise CardRequestException(
'Failed to SCardGetStatusChange ' + \
SCardGetErrorMessage(hresult))
# in case of timeout or reader disappearing,
# the content of the states is useless
# in which case we clear the changed bit
if SCARD_E_TIMEOUT == hresult or SCARD_E_UNKNOWN_READER == hresult:
for state in newstates:
state[1] = state[1] & (0xFFFFFFFF ^ SCARD_STATE_CHANGED)
# update readerstate
for state in newstates:
readername, eventstate, atr = state
readerstates[readername] = (readername, eventstate)
# if a new card is not requested, just return the first available
if not self.newcardonly:
for state in newstates:
readername, eventstate, atr = state
if eventstate & SCARD_STATE_PRESENT:
reader = PCSCReader(readername)
if self.cardType.matches(atr, reader):
if self.cardServiceClass.supports('dummy'):
cardfound = True
return self.cardServiceClass(
reader.createConnection())
timerstarted = False
while not evt.isSet() and not cardfound:
if not timerstarted:
timerstarted = True
timer.start()
time.sleep(self.pollinginterval)
# create a dictionary entry for new readers
readernames = self.getReaderNames()
for reader in readernames:
if not reader in readerstates:
readerstates[reader] = (reader, SCARD_STATE_UNAWARE)
# remove dictionary entry for readers that disappeared
for oldreader in readerstates.keys():
if oldreader not in readernames:
del readerstates[oldreader]
# wait for card insertion
if {} != readerstates:
hresult, newstates = SCardGetStatusChange(
self.hcontext, 0, readerstates.values())
else:
hresult = SCARD_E_TIMEOUT
newstates = []
# time-out
if SCARD_E_TIMEOUT == hresult:
if evt.isSet():
raise CardRequestTimeoutException()
# reader vanished before or during the call
elif SCARD_E_UNKNOWN_READER == hresult:
pass
# some error happened
elif 0 != hresult:
timer.cancel()
raise CardRequestException(
'Failed to get status change ' + \
SCardGetErrorMessage(hresult))
# something changed!
else:
# check if we have to return a match, i.e.
# if no new card in inserted and there is a card found
# or if a new card is requested, and there is a change+present
for state in newstates:
readername, eventstate, atr = state
r, oldstate = readerstates[readername]
# the status can change on a card already inserted, e.g.
# unpowered, in use, ...
# if a new card is requested, clear the state changed bit
# if the card was already inserted and is still inserted
if self.newcardonly:
if oldstate & SCARD_STATE_PRESENT and \
eventstate & \
(SCARD_STATE_CHANGED | SCARD_STATE_PRESENT):
eventstate = eventstate & \
(0xFFFFFFFF ^ SCARD_STATE_CHANGED)
if (self.newcardonly and \
eventstate & SCARD_STATE_PRESENT and \
eventstate & SCARD_STATE_CHANGED) or \
(not self.newcardonly and \
eventstate & SCARD_STATE_PRESENT):
reader = PCSCReader(readername)
if self.cardType.matches(atr, reader):
if self.cardServiceClass.supports('dummy'):
cardfound = True
timer.cancel()
return self.cardServiceClass(
reader.createConnection())
# update state dictionary
readerstates[readername] = (readername, eventstate)
if evt.isSet():
raise CardRequestTimeoutException()
def readCard(self, dend, msr):
"""Wait for card insertion and returns a card service."""
AbstractCardRequest.waitforcard(self)
cardfound = False
data = []
swiped = False
# for non infinite timeout, a timer will signal
# the end of the time-out by setting the evt event
evt = Event()
if INFINITE == self.timeout:
timertimeout = 1
else:
timertimeout = self.timeout
timer = Timer(
timertimeout, signalEvent, [evt, INFINITE == self.timeout])
# create a dictionary entry for new readers
readerstates = {}
readernames = self.getReaderNames()
for reader in readernames:
if not reader in readerstates:
readerstates[reader] = (reader, SCARD_STATE_UNAWARE)
# remove dictionary entry for readers that disappeared
for oldreader in list(readerstates.keys()):
if oldreader not in readernames:
del readerstates[oldreader]
# call SCardGetStatusChange only if we have some readers
if {} != readerstates:
hresult, newstates = SCardGetStatusChange(
self.hcontext, 0, list(readerstates.values()))
else:
hresult = 0
newstates = []
# we can expect normally time-outs or reader
# disappearing just before the call
# otherwise, raise execption on error
if 0 != hresult and \
SCARD_E_TIMEOUT != hresult and \
SCARD_E_UNKNOWN_READER != hresult:
raise CardRequestException(
'Failed to SCardGetStatusChange ' + \
SCardGetErrorMessage(hresult))
# in case of timeout or reader disappearing,
# the content of the states is useless
# in which case we clear the changed bit
if SCARD_E_TIMEOUT == hresult or SCARD_E_UNKNOWN_READER == hresult:
for state in newstates:
state[1] = state[1] & (0xFFFFFFFF ^ SCARD_STATE_CHANGED)
# update readerstate
for state in newstates:
readername, eventstate, atr = state
readerstates[readername] = (readername, eventstate)
# if a new card is not requested, just return the first available
if not self.newcardonly:
for state in newstates:
readername, eventstate, atr = state
if eventstate & SCARD_STATE_PRESENT:
reader = PCSCReader(readername)
if self.cardType.matches(atr, reader):
if self.cardServiceClass.supports('dummy'):
cardfound = True
return self.cardservice(reader)
while not evt.isSet() and not cardfound:
sleep(self.pollinginterval) # PCSC refresh rate
# create a dictionary entry for new readers
readernames = self.getReaderNames()
for reader in readernames:
if not reader in readerstates:
readerstates[reader] = (reader, SCARD_STATE_UNAWARE)
# remove dictionary entry for readers that disappeared
for oldreader in list(readerstates.keys()):
if oldreader not in readernames:
del readerstates[oldreader]
# wait for card insertion
if {} != readerstates:
hresult, newstates = SCardGetStatusChange(
self.hcontext, 0, list(readerstates.values()))
else:
hresult = SCARD_E_TIMEOUT
newstates = []
# msr-read card intermezzo
if not self.msr_active:
try:
if swiped:
return msr.process_data(data)
data += msr.device.read(dend.bEndpointAddress, dend.wMaxPacketSize, 5)
if len(data) >= 537:
swiped = True
except usb.core.USBError as e:
if e.args == ('Operation timed out',):
print('Invalid swipe, discarding %s bytes of data', len(data))
data = []
continue
# time-out
if SCARD_E_TIMEOUT == hresult:
if evt.isSet():
raise CardRequestTimeoutException()
# reader vanished before or during the call
elif SCARD_E_UNKNOWN_READER == hresult:
pass
# some error happened
elif 0 != hresult:
timer.cancel()
raise CardRequestException(
'Failed to get status change ' + \
SCardGetErrorMessage(hresult))
# something changed!
else:
# check if we have to return a match, i.e.
# if no new card in inserted and there is a card found
# or if a new card is requested, and there is a change+present
for state in newstates:
readername, eventstate, atr = state
r, oldstate = readerstates[readername]
# the status can change on a card already inserted, e.g.
# unpowered, in use, ...
# if a new card is requested, clear the state changed bit
# if the card was already inserted and is still inserted
if self.newcardonly:
if oldstate & SCARD_STATE_PRESENT and \
eventstate & \
(SCARD_STATE_CHANGED | SCARD_STATE_PRESENT):
eventstate = eventstate & \
(0xFFFFFFFF ^ SCARD_STATE_CHANGED)
if (self.newcardonly and \
eventstate & SCARD_STATE_PRESENT and \
eventstate & SCARD_STATE_CHANGED) or \
(not self.newcardonly and \
eventstate & SCARD_STATE_PRESENT):
reader = PCSCReader(readername)
if self.cardType.matches(atr, reader):
if self.cardServiceClass.supports('dummy'):
cardfound = True
# timer.cancel()
return self.cardservice(reader)
# update state dictionary
readerstates[readername] = (readername, eventstate)
if evt.isSet():
raise CardRequestTimeoutException()
