def test_encode():
# Test v1 path
v1_bytes = packet.encode(get_v1_dic())
eq_(len(v1_bytes), 128)
# Test v2 path
v2_bytes = packet.encode(get_v2_dic())
eq_(len(v2_bytes), packet.V2_LEN + packet.VERSION_LEN + packet.CRC_LEN)
def convert_v1_card_to_v2(nfc, card):
with nfc_comm.Connection(nfc) as conn:
v1_fields = card.dic['fields']
v2_fields = packet.v1_to_v2(v1_fields)
LOG.info('Converting v1 tag to v2. v1 tag %s\nv2 tag %s', v1_fields,
v2_fields)
card.write(conn, packet.encode(v2_fields))
def main():
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('--version', default=2, nargs='?', type=int)
options = parser.parse_args()
nfc = nfc_comm.NFC()
readers = nfc.get_readers()
if len(readers) == 0:
print('Cannot find NFC reader.')
return 2
reader_status = nfc_comm.ReaderStatus(nfc.get_status_change()[0])
if not reader_status.is_card_present():
print('No card present.')
return 2
print('Found card.')
cards = nfc_comm.get_cards(nfc)
if len(cards) == 0:
print('Card is not NTAG203.')
return 2
print('Card is NTAG203.')
card = cards[0]
with nfc_comm.Connection(nfc) as conn:
if options.version == 1:
defaults = packet.v1_defaults()
else:
defaults = packet.v2_defaults(1)
pprint(defaults)
card.write(conn, packet.encode(defaults))
def rpc_write_tag(fields):
LOG.info("rpc_write_tag: %s", fields)
data_bytes = packet.encode(fields)
LOG.debug("write bytes %s", nfc_comm.fmt_bytes(data_bytes))
with nfc_comm.NFC() as nfc, nfc_comm.Connection(nfc) as conn:
cards = nfc_comm.get_cards(nfc)
card = cards[0]
card.write(conn, data_bytes)
def test_v2_defaults_are_invertible():
# While we're at it, let's just check that all of the defaults
# can make the round trip through encoding and decoding.
orig = packet.v2_defaults(1)
eq_(orig, packet.decode(packet.encode(orig)))
def test_v1_encode_decode_roundtrip():
dic_with_version = dict(get_v1_dic())
dic_with_version['version'] = 1
pkt_bytes = packet.encode(dic_with_version)
eq_(packet.decode(pkt_bytes), dic_with_version)