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Check for restricted NFC

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Dain Nilsson 2024-07-11 21:23:09 +02:00
parent 23c8677aeb
commit d47f30a04f
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GPG Key ID: F04367096FBA95E8
1 changed files with 27 additions and 5 deletions
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32
helper/helper/device.py
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@ -32,7 +32,13 @@ from ykman.device import scan_devices, list_all_devices
from ykman.diagnostics import get_diagnostics
from ykman.logging import set_log_level
from yubikit.core import TRANSPORT, NotSupportedError
from yubikit.core.smartcard import SmartCardConnection, ApduError, SW
from yubikit.core.smartcard import (
SmartCardConnection,
ApduError,
SW,
SmartCardProtocol,
ApplicationNotAvailableError,
)
from yubikit.core.smartcard.scp import Scp11KeyParams
from yubikit.core.otp import OtpConnection
from yubikit.core.fido import FidoConnection
@ -370,6 +376,9 @@ class _ReaderObserver(CardObserver):
logger.debug(f"NFC card: {self.card}")
RESTRICTED_NDEF = bytes.fromhex("001fd1011b5504") + b"yubico.com/getting-started"
class ReaderDeviceNode(AbstractDeviceNode):
def __init__(self, device, info):
super().__init__(device, info)
@ -392,14 +401,27 @@ class ReaderDeviceNode(AbstractDeviceNode):
return dict(present=False, status="no-card")
try:
with self._device.open_connection(SmartCardConnection) as conn:
data = dict(self._read_data(conn), present=True)
try:
data = dict(self._read_data(conn), present=True)
except ValueError:
# Unknown device, maybe NFC restricted
try:
p = SmartCardProtocol(conn)
p.select(bytes.fromhex("D2760000850101"))
p.send_apdu(0, 0xA4, 0x00, 0x0C, bytes.fromhex("E104"))
ndef = p.send_apdu(0, 0xB0, 0, 0)
except (ApduError, ApplicationNotAvailableError):
ndef = None
if ndef == RESTRICTED_NDEF:
data = dict(present=False, status="restricted-nfc")
else:
data = dict(present=False, status="unknown-device")
self._observer.needs_refresh = False
return data
except NoCardException:
return dict(present=False, status="no-card")
except ValueError:
self._observer.needs_refresh = False
return dict(present=False, status="unknown-device")
@action(closes_child=False)
def get(self, params, event, signal):