python-kasa/pyHS100/discover.py
Teemu R 07af48e41a Discover refactoring, enhancements to the cli tool (#71)
* Discover refactoring, enhancements to the cli tool

* Discover tries to detect the type of the device from sysinfo response
* Discover.discover() returns an IP address keyed dictionary,
  values are initialized instances of the automatically detected device type.

* When no IP is given, autodetect all supported devices and print out their states
* When only IP but no type is given, autodetect type and make a call based on that information.
  * One can define --bulb or --plug to skip the detection.

* renamed pyHS100.py -> smartdevice.py

* SmartPlugException -> SmartDeviceException in comments

* fix mic_type check

* make time() return None on failure as we don't know which devices support getting the time and it's used in the cli tool

* hw_info: check if key exists before accessing it, add mic_mac and mic_type

* Check for mic_mac on mac, based on work by kdschloesser on issue #59

* make hound happy, __init__ on SmartDevice cannot error out so removing 'raises' documentation
2017-08-05 15:49:56 +02:00

69 lines
2.5 KiB
Python

import socket
import logging
import json
from pyHS100 import TPLinkSmartHomeProtocol, SmartPlug, SmartBulb
_LOGGER = logging.getLogger(__name__)
class Discover:
@staticmethod
def discover(protocol=None, port=9999, timeout=3):
"""
Sends discovery message to 255.255.255.255:9999 in order
to detect available supported devices in the local network,
and waits for given timeout for answers from devices.
:param timeout: How long to wait for responses, defaults to 5
:param port: port to send broadcast messages, defaults to 9999.
:rtype: dict
:return: Array of json objects {"ip", "port", "sys_info"}
"""
if protocol is None:
protocol = TPLinkSmartHomeProtocol()
discovery_query = {"system": {"get_sysinfo": None},
"emeter": {"get_realtime": None}}
target = "255.255.255.255"
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.settimeout(timeout)
req = json.dumps(discovery_query)
_LOGGER.debug("Sending discovery to %s:%s", target, port)
encrypted_req = protocol.encrypt(req)
sock.sendto(encrypted_req[4:], (target, port))
devices = {}
_LOGGER.debug("Waiting %s seconds for responses...", timeout)
try:
while True:
data, addr = sock.recvfrom(4096)
ip, port = addr
info = json.loads(protocol.decrypt(data))
if "system" in info and "get_sysinfo" in info["system"]:
sysinfo = info["system"]["get_sysinfo"]
if "type" in sysinfo:
type = sysinfo["type"]
elif "mic_type" in sysinfo:
type = sysinfo["mic_type"]
else:
_LOGGER.error("Unable to find the device type field!")
type = "UNKNOWN"
else:
_LOGGER.error("No 'system' nor 'get_sysinfo' in response")
if "smartplug" in type.lower():
devices[ip] = SmartPlug(ip)
elif "smartbulb" in type.lower():
devices[ip] = SmartBulb(ip)
except socket.timeout:
_LOGGER.debug("Got socket timeout, which is okay.")
except Exception as ex:
_LOGGER.error("Got exception %s", ex, exc_info=True)
return devices