getting Ikea tardfri lightbulb status

smartlight.cfg

[tardfri]
hubip = x.x.x.x
securityid = AABBCCDDEEFFGGHH

smartlight.py

#!/usr/bin/env python

# file        : smartlight.py
# purpose     : control ikea tardfri smart light
#
# author      : harald van der laan
# date        : 2017/04/06
# version     : v1.0.0
#
# requirements:
# - libcoap
#
# changelog   :
# - v1.0.0      initial release                                         (harald)

""" smartlight - python framework for the tardfri ikea smart light hub
    this frame works requires libcoap with dtls compiled, more info is found
    in the bin directory. there is also a build script.

    libcoap requires cunit, a2x and doxygen """

from __future__ import print_function

import sys
import os
import json
import ConfigParser

def get_tardfri_devices(hubip, securityid):
    """ function for getting all paired devices to the hub """
    hub = 'coaps://{}:5684/15001' .format(hubip)
    apicall = 'bin/coap-client -m get -u "Client_identity" -k "{}" "{}" | awk \'NR==4\'' .format(securityid, hub)

    if os.path.exists('bin/coap-client'):
        result = os.popen(apicall)
    else:
        sys.stderr.write('[-] error: could not find libcoap\n')

    return json.loads(result.read().strip('\n'))

def get_tardfri_lightbulb(hubip, securityid, deviceid):
    """ function for getting information of a tardfri lightbulb """
    hub = 'coaps://{}:5684/15001/{}' .format(hubip, deviceid)
    apicall = 'bin/coap-client -m get -u "Client_identity" -k "{}" "{}" | awk \'NR==4\'' .format(securityid, hub)

    if os.path.exists('bin/coap-client'):
        result = os.popen(apicall)
    else:
        sys.stderr.write('[-] error: could not find libcoap\n')
        sys.exit(1)

    return json.loads(result.read().strip('\n'))

def main():
    conf = ConfigParser.ConfigParser()
    conf.read('smartlight.cfg')
    hubip = conf.get('tardfri', 'hubip')
    securityid = conf.get('tardfri', 'securityid')
    lightbulb = []

    print('[ ] smartlight: receiving tardfri lightbulbs information')
    devices = get_tardfri_devices(hubip, securityid)

    for deviceid in range(len(devices)):
        lightbulb.append(get_tardfri_lightbulb(hubip, securityid, str(devices[deviceid])))

    print('[+] smartlight: done getting tardfri lightbulbs information')
    print('===========================================================\n')

    for counter in range(len(lightbulb)):
        try:
            if lightbulb[counter]["3311"][0]["5850"] == 0:
                # lightbulb is off
                print('bulbid: {}, name: {}, state: off' .format(counter,
                                                                 lightbulb[counter]["9001"]))
            else:
                # lightbulb is on
                print('bulbid: {}, name: {}, state: on' .format(counter,
                                                                lightbulb[counter]["9001"]))
        except KeyError:
            # not a lightbulb but a controler
            pass

if __name__ == "__main__":
    main()
    sys.exit(0)