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#! python3
# Copyright Tomer Figenblat.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Python script for retrieving Switcher device login key."""
import socket
import time
from argparse import ArgumentParser, RawDescriptionHelpFormatter
from pprint import PrettyPrinter
from aioswitcher.bridge import (
SWITCHER_UDP_PORT_TYPE1,
SWITCHER_UDP_PORT_TYPE1_NEW_VERSION,
SWITCHER_UDP_PORT_TYPE2,
SWITCHER_UDP_PORT_TYPE2_NEW_VERSION,
)
printer = PrettyPrinter(indent=4)
_examples = """example usage:
python get_device_login_key.py -i "111.222.11.22" -p 10002\n
""" # noqa E501
parser = ArgumentParser(
description="Get the login key of your Switcher device",
epilog=_examples,
formatter_class=RawDescriptionHelpFormatter,
)
parser.add_argument(
"-i",
"--ip-address",
required=True,
help="the ip address assigned to the device",
type=str,
)
possible_ports = [
SWITCHER_UDP_PORT_TYPE1,
SWITCHER_UDP_PORT_TYPE1_NEW_VERSION,
SWITCHER_UDP_PORT_TYPE2,
SWITCHER_UDP_PORT_TYPE2_NEW_VERSION,
]
parser.add_argument(
"-p",
"--port",
required=True,
choices=possible_ports,
help="the UDP port of the device",
type=int,
)
def extract_device_key(data: bytes) -> str:
"""Get the device_key from the UDP message."""
return data[40:41].hex()
def listen_udp(specific_ip: str, port: int) -> None:
"""Listen to UDP and try to extract the device_key."""
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind(("", port))
start_time = time.time()
while True:
if time.time() - start_time > 2:
print("Stopping the server.")
break
sock.settimeout(2 - (time.time() - start_time))
try:
data, addr = sock.recvfrom(1024)
if addr[0] == specific_ip:
print("Received device key:", extract_device_key(data))
break
except socket.timeout:
print("No packets received, still waiting...")
sock.close()
def main() -> None:
"""Fetch the devices's login key."""
args = parser.parse_args()
print("ip address: " + args.ip_address)
print("port: " + str(args.port))
listen_udp(args.ip_address, args.port)
if __name__ == "__main__":
main()
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