def accept(self) -> bool:
self.update_state(CallState.EXCHANGING_KEYS)
if not self.call:
self.call_failed()
raise RuntimeError('call is not set')
self.get_dhc()
self.b = randint(2, self.dhc.p-1)
self.g_b = pow(self.dhc.g, self.b, self.dhc.p)
self.g_a_hash = self.call.g_a_hash
try:
self.call = self.client.send(functions.phone.AcceptCall(
peer=types.InputPhoneCall(id=self.call_id, access_hash=self.call_access_hash),
g_b=i2b(self.g_b),
protocol=self.get_protocol()
)).phone_call
except errors.Error as e:
if e.ID == 'CALL_ALREADY_ACCEPTED':
self.stop()
return True
elif e.ID == 'CALL_ALREADY_DECLINED':
self.call_discarded()
return False
raise e
if isinstance(self.call, types.PhoneCallDiscarded):
print('Call is already discarded')
self.call_discarded()
return False
return True
def request(self):
self.update_state(CallState.REQUESTING)
self.peer = self.client.resolve_peer(self.user_id)
self.get_dhc()
self.a = randint(2, self.dhc.p - 1)
self.g_a = pow(self.dhc.g, self.a, self.dhc.p)
self.g_a_hash = hashlib.sha256(i2b(self.g_a)).digest()
self.call = self.client.send(
functions.phone.RequestCall(
user_id=self.peer,
random_id=randint(0, 0x7fffffff - 1),
g_a_hash=self.g_a_hash,
protocol=self.get_protocol(),
)).phone_call
self.update_state(CallState.WAITING)
def __init__(self, user_id: Union[int, str], *args, **kwargs):
super(VoIPOutgoingCall, self).__init__(*args, **kwargs)
self.update_state(CallState.REQUESTING)
self.peer = self.client.resolve_peer(user_id)
self.a = randint(2, self.dhc.p - 1)
self.g_a = pow(self.dhc.g, self.a, self.dhc.p)
self.g_a_hash = hashlib.sha256(i2b(self.g_a)).digest()
self.call = self.client.send(
functions.phone.RequestCall(
user_id=self.peer,
random_id=randint(0, 0x7fffffff - 1),
g_a_hash=self.g_a_hash,
protocol=self.get_protocol(),
)).phone_call
self.update_state(CallState.WAITING)
self.call_accepted_handlers = []
def call_accepted(self) -> None:
for handler in self.call_accepted_handlers:
callable(handler) and handler(self)
self.update_state(CallState.EXCHANGING_KEYS)
self.g_b = b2i(self.call.g_b)
self.check_g(self.g_b, self.dhc.p)
self.auth_key = pow(self.g_b, self.a, self.dhc.p)
self.key_fingerprint = calc_fingerprint(self.auth_key_bytes)
self.call = self.client.send(
functions.phone.ConfirmCall(
key_fingerprint=self.key_fingerprint,
peer=types.InputPhoneCall(id=self.call.id,
access_hash=self.call_access_hash),
g_a=i2b(self.g_a),
protocol=self.get_protocol(),
)).phone_call
self._initiate_encrypted_call()
def auth_key_bytes(self) -> bytes:
return i2b(self.auth_key) if self.auth_key is not None else b''