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import asyncio
import logging
import socket
from typing import Tuple, Optional
from flux_led.aioscanner import AIOBulbScanner
from flux_led.protocol import OUTER_MESSAGE_WRAPPER
logging.basicConfig(level=logging.DEBUG)
_LOGGER = logging.getLogger(__name__)
DEVICE_ID = 0xA1
VERSION = 9
MINOR_VERSION = 28
ON_AT_START = False
# MODEL = "AK001-ZJ2101" # Supports auto on
# MODEL = "AK001-ZJ2145" # Supports dimmable effects
MODEL = "AK001-ZJ2147"
def get_local_ip():
"""Find the local ip address."""
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setblocking(False)
try:
s.connect(("10.255.255.255", 1))
return s.getsockname()[0]
except Exception:
return None
finally:
s.close()
class MagicHomeDiscoveryProtocol(asyncio.Protocol):
"""A asyncio.Protocol implementing the MagicHome discovery protocol."""
def __init__(self) -> None:
self.loop = asyncio.get_running_loop()
self.local_ip = get_local_ip()
self.transport: Optional[asyncio.BaseTransport] = None
def connection_made(self, transport):
self.transport = transport
def send(self, data: bytes, addr: Tuple[str, int]) -> None:
"""Trigger on data."""
_LOGGER.debug(
"UDP %s => %s (%d)",
addr,
data,
len(data),
)
self.transport.sendto(data, addr)
def datagram_received(self, data: bytes, addr: Tuple[str, int]) -> None:
"""Trigger on data."""
_LOGGER.debug(
"UDP %s <= %s (%d)",
addr,
data,
len(data),
)
assert self.transport is not None
model_str = hex(DEVICE_ID)[2:].zfill(2).upper()
version_str = hex(VERSION)[2:].zfill(2).upper()
minor_version_str = str(MINOR_VERSION).zfill(2).upper()
if data.startswith(AIOBulbScanner.DISCOVER_MESSAGE):
self.send(
f"{self.local_ip},B4E842{model_str}{version_str}{minor_version_str},{MODEL}".encode(),
addr,
)
if data.startswith(AIOBulbScanner.VERSION_MESSAGE):
model_str = hex(DEVICE_ID)[2:].zfill(2).upper()
self.send(
f"+ok={model_str}_{minor_version_str}_20210428_ZG-BL\r".encode(), addr
)
def error_received(self, ex: Optional[Exception]) -> None:
"""Handle error."""
_LOGGER.debug("LEDENETDiscovery error: %s", ex)
def connection_lost(self, ex: Optional[Exception]) -> None:
"""The connection is lost."""
class MagichomeServerProtocol(asyncio.Protocol):
"""A asyncio.Protocol implementing the MagicHome protocol."""
def __init__(self) -> None:
self.loop = asyncio.get_running_loop()
self.handler = None
self.peername = None
self.transport: Optional[asyncio.BaseTransport] = None
def connection_lost(self, exc: Exception) -> None:
"""Handle connection lost."""
_LOGGER.debug("%s: Connection lost: %s", self.peername, exc)
def connection_made(self, transport: asyncio.Transport) -> None:
"""Handle incoming connection."""
_LOGGER.debug("%s: Connection made", transport)
self.peername = transport.get_extra_info("peername")
self.transport = transport
def send(self, data: bytes, random_byte: Optional[None]) -> None:
"""Trigger on data."""
if random_byte is not None:
msg = self.construct_wrapped_message(data, random_byte)
else:
msg = data
_LOGGER.debug(
"TCP %s => %s (%d)",
self.peername,
" ".join(f"0x{x:02X}" for x in msg),
len(msg),
)
self.transport.write(msg)
def data_received(self, data: bytes) -> None:
"""Process new data from the socket."""
_LOGGER.debug(
"TCP %s <= %s (%d)",
self.peername,
" ".join(f"0x{x:02X}" for x in data),
len(data),
)
assert self.transport is not None
if data.startswith(bytearray([*OUTER_MESSAGE_WRAPPER])):
msg = data[10:-1]
random = data[7]
else:
random = None
msg = data
if msg.startswith(bytearray([0x81])):
self.send(
self.construct_message(
bytearray(
[
0x81,
DEVICE_ID,
0x23 if ON_AT_START else 0x24,
0x61,
0xC5,
0x17,
0x18,
0x00,
0x00,
0x00,
VERSION,
0xF0,
0xF2,
]
)
),
random,
)
def construct_wrapped_message(
self, inner_msg: bytearray, random_byte: int
) -> bytearray:
"""Construct a wrapped message."""
inner_msg_len = len(inner_msg)
return self.construct_message(
bytearray(
[
*OUTER_MESSAGE_WRAPPER,
random_byte,
inner_msg_len >> 8,
inner_msg_len & 0xFF,
*inner_msg,
]
)
)
def construct_message(self, raw_bytes: bytearray) -> bytearray:
"""Calculate checksum of byte array and add to end."""
csum = sum(raw_bytes) & 0xFF
raw_bytes.append(csum)
return raw_bytes
async def go():
loop = asyncio.get_running_loop()
await loop.create_server(
lambda: MagichomeServerProtocol(),
host="0.0.0.0",
port=5577,
)
await loop.create_datagram_endpoint(
lambda: MagicHomeDiscoveryProtocol(),
local_addr=("0.0.0.0", AIOBulbScanner.DISCOVERY_PORT),
)
await asyncio.sleep(86400)
asyncio.run(go())
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