def test_deserializer_from_activate():
# To test deserialization - we need to start with a different message-type and then convert
# back to a generic message...
token = "TOKEN12345"
seq_id = 0x1234567890ABCDEF
send_id = 0x5F5F5F5F5F5F5F5F
x = pySRUPLib.SRUP_Activate()
y = pySRUPLib.SRUP_Generic()
x.token = token
x.sequence_id = seq_id
x.sender_id = send_id
assert x.sign(keyfile) is True
z = x.serialize()
assert y.deserialize(z) is True
# Remember we can't verify the generic message...
assert y.verify(pubkeyfile) is False
assert y.sender_id == send_id
assert y.sequence_id == seq_id
assert y.token == token
def send_SRUP_Activate(self, target_id, token):
SRUP_activate_message = pySRUPLib.SRUP_Activate()
SRUP_activate_message.token = token
# When we're sending a message – the sender ID is obviously the device ID of the "device" (or server) that's
# sending the message... But the sequence ID should be one more than the last seq_id used in a message to
# that recipient...
iTarget = int(target_id, 16)
if iTarget not in self.__seq_id:
self.__seq_id.update({iTarget: 0})
self.__seq_id.update({iTarget: self.__seq_id[iTarget] + 1})
s = self.__seq_id[iTarget]
SRUP_activate_message.sequence_id = s
SRUP_activate_message.sender_id = int(self.__device_id, 16)
SRUP_activate_message.sign(self.__local_private_key)
serial_data = SRUP_activate_message.serialize()
if self.__isServer:
pre_topic = target_id
else:
pre_topic = self.__device_id
if serial_data is not None:
topic = "SRUP/{}".format(pre_topic)
self.__mqtt_client.publish(topic, serial_data)
time.sleep(1)
# self.__mqtt_client.loop_write()
else:
# TODO: THROW A CUSTOM EXCEPTION
print("Message did not serialize")
def test_activate_serializer():
x = pySRUPLib.SRUP_Activate()
x.token = "TOKEN12345"
x.sequence_id = 0x1234567890ABCDEF
x.sender_id = 0x5F5F5F5F5F5F5F5F
assert x.sign(keyfile) is True
z = x.serialize()
def test_activate_deserializer():
token = "TOKEN12345"
seq_id = 0x1234567890ABCDEF
send_id = 0x5F5F5F5F5F5F5F5F
x = pySRUPLib.SRUP_Activate()
y = pySRUPLib.SRUP_Activate()
x.token = token
x.sequence_id = seq_id
x.sender_id = send_id
assert x.sign(keyfile) is True
z = x.serialize()
assert y.deserialize(z) is True
assert y.verify(pubkeyfile) is True
assert y.token == token
assert y.sender_id == send_id
assert y.sequence_id == seq_id
def test_activate_generic_deserializer():
token = "TOKEN12345"
seq_id = 0x1234567890ABCDEF
send_id = 0x5F5F5F5F5F5F5F5F
x = pySRUPLib.SRUP_Activate()
i = pySRUPLib.SRUP_Generic()
x.token = token
x.sequence_id = seq_id
x.sender_id = send_id
assert x.sign(keyfile) is True
z = x.serialize()
assert i.deserialize(z) is True
assert i.msg_type == pySRUPLib.__activate_message_type()
def test_activate_sender():
MAX_SENDER = 0xFFFFFFFFFFFFFFFF
ZERO_SENDER = 0x00
VALID_SENDER = 0x7FFFFFFFFFFFFFE7
x = pySRUPLib.SRUP_Activate()
x.sender_id = MAX_SENDER
assert x.sender_id == MAX_SENDER
x.sender_id = VALID_SENDER
assert x.sender_id == VALID_SENDER
x.sender_id = ZERO_SENDER
assert x.sender_id == ZERO_SENDER
with pytest.raises(OverflowError):
x.sender_id = MAX_SENDER + 1
with pytest.raises(OverflowError):
x.sender_id = ZERO_SENDER - 1
def test_activate_seqid():
MAX_SEQID = 0xFFFFFFFFFFFFFFFF
ZERO_SEQID = 0x00
VALID_SEQID = 0x7FFFFFFFFFFFFFE7
x = pySRUPLib.SRUP_Activate()
x.sequence_id = MAX_SEQID
assert x.sequence_id == MAX_SEQID
x.sequence_id = VALID_SEQID
assert x.sequence_id == VALID_SEQID
x.sequence_id = ZERO_SEQID
assert x.sequence_id == ZERO_SEQID
with pytest.raises(OverflowError):
x.sequence_id = MAX_SEQID + 1
with pytest.raises(OverflowError):
x.sequence_id = ZERO_SEQID - 1
def test_activate_signing():
blank = ""
x = pySRUPLib.SRUP_Activate()
assert x.sign(blank) is False
assert x.sign(keyfile) is False
x.token = "TOKEN12345"
assert x.sign(keyfile) is False
x.sequence_id = 0x1234567890ABCDEF
assert x.sign(keyfile) is False
x.sender_id = 0x5F5F5F5F5F5F5F5F
assert x.sign(blank) is False
assert x.sign(keyfile) is True
assert x.verify(pubkeyfile) is True
# Transpose a digit in the digest...
x.sequence_id = 0x5F5F5F5F5F5F5F5F - 1
assert x.verify(pubkeyfile) is False
def test_activate_token():
x = pySRUPLib.SRUP_Activate()
assert x.token is None
x.token = "TEST_TOKEN"
assert x.token == "TEST_TOKEN"
def test_empty_object():
x = pySRUPLib.SRUP_Activate()
assert x.token is None
assert x.sequence_id is None
assert x.sender_id is None
assert x.sign("") is False
def test_activate_type():
x = pySRUPLib.SRUP_Activate()
assert x.msg_type == pySRUPLib.__activate_message_type()
def __on_message(self, client, userdata, msg):
# First check if the message is even for us...
# Remembering that server's are wild...
topic = None
ch_topic = msg.topic
if ch_topic[0:5] == 'SRUP/':
topic = ch_topic[5:]
# First check if the message is for us (or if we're a server read it anyway)
if topic == self.__device_id or self.__isServer:
SRUP_generic_message = pySRUPLib.SRUP_Generic()
# if if deserializes then it's probably a SRUP message...
if SRUP_generic_message.deserialize(msg.payload):
# Did we send it? If so, ignore it...
if SRUP_generic_message.sender_id != int(self.__device_id, 16):
# Check to see if we've had a message from this sender before (creating a counter if we haven't)
if SRUP_generic_message.sender_id not in self.__seq_id:
self.__seq_id.update(
{SRUP_generic_message.sender_id: 0})
# Get current sequence ID for this sender...
s = self.__seq_id[SRUP_generic_message.sender_id]
# Check to see the sequence ID of the message is greater than the last received message
# to avoid replay attack...
if SRUP_generic_message.sequence_id > s:
# Update the "last received" sequence ID for this sender...
self.__seq_id[
SRUP_generic_message.
sender_id] = SRUP_generic_message.sequence_id
msg_type = SRUP_generic_message.msg_type
if msg_type == SRUP_ACTION_MESSAGE_TYPE:
SRUP_action_message = pySRUPLib.SRUP_Action()
SRUP_action_message.deserialize(msg.payload)
if SRUP_action_message.verify(
self.__remote_public_key):
self.__on_action(SRUP_action_message)
else:
# TODO: THROW A CUSTOM EXCEPTION
print("Message did not verify using {}".format(
self.__remote_public_key))
elif msg_type == SRUP_DATA_MESSAGE_TYPE:
SRUP_data_message = pySRUPLib.SRUP_Data()
SRUP_data_message.deserialize(msg.payload)
if SRUP_data_message.verify(
self.__remote_public_key):
self.__on_data(SRUP_data_message)
else:
# TODO: THROW A CUSTOM EXCEPTION
print("Message did not verify using {}".format(
self.__remote_public_key))
elif msg_type == SRUP_INITIATE_MESSAGE_TYPE:
# Devices can't send init messages – so skip this if we're a server...
if not self.__isServer:
SRUP_initiate_message = pySRUPLib.SRUP_Initiate(
)
SRUP_initiate_message.deserialize(msg.payload)
if SRUP_initiate_message.verify(
self.__remote_public_key):
self.__on_initiate(SRUP_initiate_message)
else:
# TODO: THROW A CUSTOM EXCEPTION
print("Message did not verify using {}".
format(self.__remote_public_key))
elif msg_type == SRUP_RESPONSE_MESSAGE_TYPE:
SRUP_response_message = pySRUPLib.SRUP_Response()
SRUP_response_message.deserialize(msg.payload)
if SRUP_response_message.verify(
self.__remote_public_key):
self.__on_response(SRUP_response_message)
else:
# TODO: THROW A CUSTOM EXCEPTION
print("Message did not verify using {}".format(
self.__remote_public_key))
elif msg_type == SRUP_ACTIVATE_MESSAGE_TYPE:
# Devices can't send activate messages either – so again, we'll skip if we're a server.
if not self.__isServer:
SRUP_activate_message = pySRUPLib.SRUP_Activate(
)
SRUP_activate_message.deserialize(msg.payload)
if SRUP_activate_message.verify(
self.__remote_public_key):
self.__on_activate(SRUP_activate_message)
else:
# TODO: THROW A CUSTOM EXCEPTION
print("Message did not verify using {}".
format(self.__remote_public_key))
else:
# We have received a message type that we can't handle...
# TODO: THROW A CUSTOM EXCEPTION
print("Invalid message type or format")
print(SRUP_generic_message.sequence_id)
else:
# TODO: THROW A CUSTOM EXCEPTION
print("Sequence ID 0x{:02X} is invalid".format(
SRUP_generic_message.sequence_id))
# print("Message Type: {}".format(SRUP_generic_message.msg_type))
else:
pass
# This is our own message – so ignore it...
else:
pass
# TODO: Not a SRUP Message ...
else:
pass