find_s10.py

#!/usr/bin/env python

import bluetooth
import sys
import os
import time
import subprocess
import re

# s10 bluetooth address
addr='CC:21:19:CF:F9:F2'
# bluetooth port
port=3


def send_message(message):
    """
    sends system notification
    """
    subprocess.Popen(['notify-send', message])
    return

def connection_check():
    """
    checks if s10 is connected. Returns True if connected, else False
    """
    ps = subprocess.Popen(['hcitool', 'con'], stdout=subprocess.PIPE)
    s10 = ps.communicate()[0].decode('utf-8')

    if "CC:21:19:CF:F9:F2" in s10:
        return True
    else:
        return False

def proximity_check():
    """
    checks if s10 is nearby, returns rssi value
    """
    ps = subprocess.Popen(['hcitool', 'rssi', addr], stdout=subprocess.PIPE)
    proximity = ps.communicate()[0].decode('utf-8')
    proximity = [int(d) for d in re.findall(r'-?\d+', proximity)]

    return proximity[0]


#while True:
# blindly tries to connect everytime (TODO smooth)
try:
    s = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
    s.connect((addr,port))
except bluetooth.btcommon.BluetoothError as err:
    pass

if connection_check():
    print('  ')
    if proximity_check() < 0:
        print('  ')
        send_message('Too far away. Locking..')
        time.sleep(5)
        ps = subprocess.Popen(['pgrep slock'], stdout=subprocess.PIPE)
        if ps is None:
            ps = subprocess.Popen(['slock'], stdout=subprocess.PIPE)
else:
    send_message('Not connected.. Locking device..')
    print('  ')
    time.sleep(5)
    ps = subprocess.Popen(['pgrep slock'], stdout=subprocess.PIPE)
    if ps is None:
        ps = subprocess.Popen(['slock'], stdout=subprocess.PIPE)

#time.sleep(1)