def get_tag():
context = nfc.init()
pnd = nfc.open(context)
if pnd is None:
print('ERROR: Unable to open NFC device.')
exit()
if nfc.initiator_init(pnd) < 0:
nfc.perror(pnd, "nfc_initiator_init")
print('ERROR: Unable to init NFC device.')
exit()
# Declare modulations
nmMifare = nfc.modulation()
nmMifare.nmt = nfc.NMT_ISO14443A
nmMifare.nbr = nfc.NBR_106
nt = nfc.target()
# Wait for tag
ret = nfc.initiator_select_passive_target(pnd, nmMifare, 0, 0, nt)
# Convert raw uid to hex, then trim to length (2*nt.nti.nai.szUidLen)
tag = ''.join(format(x, '02x') for x in nt.nti.nai.abtUid)[:2*nt.nti.nai.szUidLen]
nfc.close(pnd)
nfc.exit(context)
# Return UID
return tag
def nfcInitListen():
""" Open nfc device and set opened NFC device to initiator mode:
"""
global pnd, context
pnd = nfc.open(context)
if pnd is None:
print('ERROR: Unable to open NFC device.')
sys.exit(1)
if nfc.initiator_init(pnd) < 0:
nfc.perror(pnd, "nfc_initiator_init")
print('ERROR: Unable to init NFC device.')
sys.exit(1)
print('NFC reader: %s opened' % nfc.device_get_name(pnd))
def init_reader(callback):
context = nfc.init()
devs = nfc.list_devices(context, 16)
if devs:
for dev in devs:
pnd = nfc.open(context, dev)
if pnd:
if nfc.initiator_init(pnd) < 0:
nfc.perror(pnd, "nfc_initator_init")
nfc.close(pnd)
else:
reader = NFCReader(context, pnd, callback)
reader.daemon = True
reader.start()
else:
print("failed to find a NFC device")
def init_reader(callback):
context = nfc.init()
devs = nfc.list_devices(context, 16)
if devs:
for dev in devs:
pnd = nfc.open(context, dev)
if pnd:
if nfc.initiator_init(pnd) < 0:
nfc.perror(pnd, "nfc_initator_init")
nfc.close(pnd)
else:
reader = NFCReader(context, pnd, callback)
reader.daemon = True
reader.start()
else:
print("failed to find a NFC device")
def open_device(self):
# return if device is already initialized
if self.device:
return
# make sure everything is shut down before initalizing
self.shutdown()
self.context = nfc.init()
print("{} uses libnfc {}".format(sys.argv[0], nfc.__version__))
connstrings = nfc.list_devices(self.context, max_device_count)
szDeviceFound = len(connstrings)
if szDeviceFound == 0:
raise Exception("No NFC reader found!")
for i in range(szDeviceFound):
self.device = nfc.open(self.context, connstrings[i])
if self.device is None:
continue
if(nfc.initiator_init(self.device)<0):
nfc.perror(self.device, "nfc_initiator_init")
raise Exception("Init of device failed!")
print("NFC reader:", nfc.device_get_name(self.device), "opened")
break
def try_read():
if nfc.initiator_select_passive_target(pnd, nmMifare, 0, 0, nt) > -1:
return read_sector(7)
@atexit.register
def close():
nfc.close(pnd)
nfc.exit(context)
accessBits = compute_access_bits(c1, c2, c3)
context = nfc.init()
pnd = nfc.open(context)
if pnd is None:
raise Exception('ERROR: Unable to open NFC device.')
if nfc.initiator_init(pnd) < 0:
nfc.perror(pnd, "nfc_initiator_init")
raise Exception('ERROR: Unable to init NFC device.')
print('NFC reader: %s opened' % nfc.device_get_name(pnd))
nmMifare = nfc.modulation()
nmMifare.nmt = nfc.NMT_ISO14443A
nmMifare.nbr = nfc.NBR_106
nt = nfc.target()
# Ensure ^C doesn't corrupt/leave anything broken.
signal.signal(signal.SIGINT, signal_handler)
conn = sqlite3.connect('/var/db/assurpid/assurpid.db')
output('opened database successfully')
output('libnfc version: ' + nfc.__version__)
context = nfc.init()
pnd = nfc.open(context)
if pnd is None:
output('ERROR: Unable to detect RFID sensor (run this as root).')
exit()
if nfc.initiator_init(pnd) < 0:
nfc.perror(pnd, "nfc_initiator_init")
output('ERROR: Unable to init RFID sensor.')
exit()
output('NFC reader: ' + nfc.device_get_name(pnd) + 'opened')
nmMifare = nfc.modulation()
nmMifare.nmt = nfc.NMT_ISO14443A
nmMifare.nbr = nfc.NBR_106
nt = nfc.target()
admin_switch = False
while True:
if not admin_switch:
print("Unable to open NFC device.")
nfc.exit(context)
exit()
print("NFC device: %s opened" % nfc.device_get_name(pnd))
#signal(SIGINT, stop_dep_communication);
print("NFC device will now act as: ")
#print_nfc_target(&nt, false)
print("Waiting for initiator request...")
abtRx = nfc.target_init(pnd, nt, MAX_FRAME_LEN, 0)
szRx = len(abtRx)
if szRx < 0:
nfc.perror(pnd, "nfc_target_init")
nfc.close(pnd)
nfc.exit(context)
exit()
print("Initiator request received. Waiting for data...\n")
abtRx = nfc.target_receive_bytes(pnd, MAX_FRAME_LEN, 0)
szRx = len(abtRx)
if szRx < 0:
nfc.perror(pnd, "nfc_target_receive_bytes")
nfc.close(pnd)
nfc.exit(context)
exit()
#abtRx[szRx] = '\0'
print('Received bits: ', end='')
nfc.print_hex(pbtRx, szRx)
# Succesful transfer
return True, pbtRx
context = nfc.init()
pnd = nfc.open(context)
if pnd is None:
print('ERROR: Unable to open NFC device.')
nfc.exit(context)
exit()
if (nfc.initiator_init(pnd) < 0):
nfc.perror(pnd, "nfc_initiator_init")
nfc.close(pnd)
nfc.exit(context)
exit()
if (nfc.device_set_property_bool(pnd, nfc.NP_HANDLE_CRC, False) < 0):
nfc.perror(pnd, "nfc_device_set_property_bool")
nfc.close(pnd)
nfc.exit(context)
exit()
if (nfc.device_set_property_bool(pnd, nfc.NP_EASY_FRAMING, False) < 0):
nfc.perror(pnd, "nfc_device_set_property_bool")
nfc.close(pnd)
nfc.exit(context)
exit()
nfc.print_hex(pbtRx, szRx)
# Succesful transfer
return True, pbtRx
context = nfc.init()
pnd = nfc.open(context)
if pnd is None:
print('ERROR: Unable to open NFC device.')
nfc.exit(context)
exit()
if(nfc.initiator_init(pnd)<0):
nfc.perror(pnd, "nfc_initiator_init")
nfc.close(pnd)
nfc.exit(context)
exit()
if (nfc.device_set_property_bool(pnd, nfc.NP_HANDLE_CRC, False) < 0):
nfc.perror(pnd, "nfc_device_set_property_bool")
nfc.close(pnd)
nfc.exit(context)
exit()
if (nfc.device_set_property_bool(pnd, nfc.NP_EASY_FRAMING, False) < 0):
nfc.perror(pnd, "nfc_device_set_property_bool")
nfc.close(pnd)
nfc.exit(context)
exit()
print("Unable to open NFC device.")
nfc.exit(context)
exit()
print("NFC device: %s opened" % nfc.device_get_name(pnd))
#signal(SIGINT, stop_dep_communication);
print("NFC device will now act as: ")
#print_nfc_target(&nt, false)
print("Waiting for initiator request...")
abtRx = nfc.target_init(pnd, nt, MAX_FRAME_LEN, 0)
szRx = len(abtRx)
if szRx < 0:
nfc.perror(pnd, "nfc_target_init")
nfc.close(pnd)
nfc.exit(context)
exit()
print("Initiator request received. Waiting for data...\n")
abtRx = nfc.target_receive_bytes(pnd, MAX_FRAME_LEN, 0)
szRx = len(abtRx)
if szRx < 0:
nfc.perror(pnd, "nfc_target_receive_bytes")
nfc.close(pnd)
nfc.exit(context)
exit()
#abtRx[szRx] = '\0'
print("Received: %s\n", abtRx)