def start_pairing(self, alias, accessory_id):
"""
This starts a pairing attempt with the IP accessory identified by its id.
It returns a callable (finish_pairing) which you must call with the pairing pin.
Accessories can be found via the discover method. The id field is the accessory's id for the second parameter.
The required pin is either printed on the accessory or displayed. Must be a string of the form 'XXX-YY-ZZZ'. If
this format is not used, a MalformedPinError is raised.
Important: no automatic saving of the pairing data is performed. If you don't do this, the information is lost
and you have to reset the accessory!
:param alias: the alias for the accessory in the controllers data
:param accessory_id: the accessory's id
:param pin: function to return the accessory's pin
:raises AccessoryNotFoundError: if no accessory with the given id can be found
:raises AlreadyPairedError: if the alias was already used
:raises UnavailableError: if the device is already paired
:raises MaxTriesError: if the device received more than 100 unsuccessful attempts
:raises BusyError: if a parallel pairing is ongoing
:raises AuthenticationError: if the verification of the device's SRP proof fails
:raises MaxPeersError: if the device cannot accept an additional pairing
:raises UnavailableError: on wrong pin
"""
if not IP_TRANSPORT_SUPPORTED:
raise TransportNotSupportedError('IP')
if alias in self.pairings:
raise AlreadyPairedError(
'Alias "{a}" is already paired.'.format(a=alias))
connection_data = find_device_ip_and_port(accessory_id)
if connection_data is None:
raise AccessoryNotFoundError(
'Cannot find accessory with id "{i}".'.format(i=accessory_id))
conn = HomeKitHTTPConnection(connection_data['ip'],
port=connection_data['port'])
try:
write_fun = create_ip_pair_setup_write(conn)
salt, pub_key = perform_pair_setup_part1(write_fun)
except Exception:
conn.close()
raise
def finish_pairing(pin):
Controller.check_pin_format(pin)
try:
pairing = perform_pair_setup_part2(pin, str(uuid.uuid4()),
write_fun, salt, pub_key)
finally:
conn.close()
pairing['AccessoryIP'] = connection_data['ip']
pairing['AccessoryPort'] = connection_data['port']
pairing['Connection'] = 'IP'
self.pairings[alias] = IpPairing(pairing)
return finish_pairing
def identify(accessory_id):
"""
This call can be used to trigger the identification of an accessory, that was not yet paired. A successful call
should cause the accessory to perform some specific action by which it can be distinguished from others (blink a
LED for example).
It uses the /identify url as described on page 88 of the spec.
:param accessory_id: the accessory's pairing id (e.g. retrieved via discover)
:raises AccessoryNotFoundError: if the accessory could not be looked up via Bonjour
:raises AlreadyPairedError: if the accessory is already paired
"""
if not IP_TRANSPORT_SUPPORTED:
raise TransportNotSupportedError('IP')
connection_data = find_device_ip_and_port(accessory_id)
if connection_data is None:
raise AccessoryNotFoundError(
'Cannot find accessory with id "{i}".'.format(i=accessory_id))
conn = HomeKitHTTPConnection(connection_data['ip'],
port=connection_data['port'])
conn.request('POST', '/identify')
resp = conn.getresponse()
# spec says status code 400 on any error (page 88). It also says status should be -70401 (which is "Request
# denied due to insufficient privileges." table 5-12 page 80) but this sounds odd.
if resp.code == 400:
data = json.loads(resp.read().decode())
code = data['status']
conn.close()
raise AlreadyPairedError(
'identify failed because: {reason} ({code}).'.format(
reason=HapStatusCodes[code], code=code))
conn.close()
def request_pin(self, alias, accessory_id):
connection_data = find_device_ip_and_port(accessory_id)
if connection_data is None:
raise AccessoryNotFoundError('Cannot find accessory with id "{i}".'.format(i=accessory_id))
conn = HomeKitHTTPConnection(connection_data['ip'], port=connection_data['port'])
try:
pairing = request_pin_setup(conn, str(uuid.uuid4()))
finally:
conn.close()
pairing['AccessoryIP'] = connection_data['ip']
pairing['AccessoryPort'] = connection_data['port']
self.pairings[alias] = Pairing(pairing)
def _connect(self, accessory_ip, accessory_port):
conn = HomeKitHTTPConnection(accessory_ip, port=accessory_port)
try:
conn.connect()
write_fun = create_ip_pair_verify_write(conn)
state_machine = get_session_keys(self.pairing_data)
request, expected = state_machine.send(None)
while True:
try:
response = write_fun(request, expected)
request, expected = state_machine.send(response)
except StopIteration as result:
self.c2a_key, self.a2c_key = result.value
self.sock = conn.sock
return True
except Exception:
logging.exception("Failed to connect to accessory")
return False
def __init__(self, pairing_data):
"""
:param pairing_data:
:raises AccessoryNotFoundError: if the device can not be found via zeroconf
"""
connected = False
if 'AccessoryIP' in pairing_data and 'AccessoryPort' in pairing_data:
# if it is known, try it
accessory_ip = pairing_data['AccessoryIP']
accessory_port = pairing_data['AccessoryPort']
conn = HomeKitHTTPConnection(accessory_ip, port=accessory_port)
try:
conn.connect()
c2a_key, a2c_key = get_session_keys(conn, pairing_data)
connected = True
except Exception as e:
connected = False
if not connected:
# no connection yet, so ip / port might have changed and we need to fall back to slow zeroconf lookup
device_id = pairing_data['AccessoryPairingID']
connection_data = find_device_ip_and_port(device_id)
if connection_data is None:
raise AccessoryNotFoundError(
'Device {id} not found'.format(id=pairing_data['AccessoryPairingID']))
conn = HomeKitHTTPConnection(connection_data['ip'], port=connection_data['port'])
pairing_data['AccessoryIP'] = connection_data['ip']
pairing_data['AccessoryPort'] = connection_data['port']
c2a_key, a2c_key = get_session_keys(conn, pairing_data)
self.sock = conn.sock
self.c2a_key = c2a_key
self.a2c_key = a2c_key
self.pairing_data = pairing_data
self.sec_http = SecureHttp(self)
def perform_pairing(self, alias, accessory_id, pin):
"""
This performs a pairing attempt with the accessory identified by its id.
Accessories can be found via the discover method. The id field is the accessory's for the second parameter.
The required pin is either printed on the accessory or displayed. Must be a string of the form 'XXX-YY-ZZZ'.
Important: no automatic saving of the pairing data is performed. If you don't do this, the information is lost
and you have to reset the accessory!
:param alias: the alias for the accessory in the controllers data
:param accessory_id: the accessory's id
:param pin: the accessory's pin
:raises AccessoryNotFoundError: if no accessory with the given id can be found
:raises AlreadyPairedError: if the alias was already used
:raises UnavailableError: if the device is already paired
:raises MaxTriesError: if the device received more than 100 unsuccessful attempts
:raises BusyError: if a parallel pairing is ongoing
:raises AuthenticationError: if the verification of the device's SRP proof fails
:raises MaxPeersError: if the device cannot accept an additional pairing
:raises UnavailableError: on wrong pin
"""
if alias in self.pairings:
raise AlreadyPairedError(
'Alias "{a}" is already paired.'.format(a=alias))
connection_data = find_device_ip_and_port(accessory_id)
if connection_data is None:
raise AccessoryNotFoundError(
'Cannot find accessory with id "{i}".'.format(i=accessory_id))
conn = HomeKitHTTPConnection(connection_data['ip'],
port=connection_data['port'])
try:
pairing = perform_pair_setup(conn, pin, str(uuid.uuid4()))
finally:
conn.close()
pairing['AccessoryIP'] = connection_data['ip']
pairing['AccessoryPort'] = connection_data['port']
self.pairings[alias] = Pairing(pairing)
def test_pair_verify_doesnt_add_extra_headers(self):
"""
The tado internet bridge will fail if a pairing request has
extraneous headers like `Accept-Encoding`.
https://github.com/home-assistant/home-assistant/issues/16971
https://github.com/jlusiardi/homekit_python/pull/130
"""
connection = HomeKitHTTPConnection('localhost')
write_fun = create_ip_pair_verify_write(connection)
with mock.patch.object(connection, 'response_class') as resp:
resp.return_value.read.return_value = b'\x00\x01\x01\x06\x01\x01'
with mock.patch.object(connection, 'send') as send:
write_fun([], [])
assert b'accept-encoding' not in send.call_args[0][0].lower()