WeatherCube/connectivity.py at main · apreucil/WeatherCube · GitHub

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sat Dec 31 13:43:39 2022

@author: anthonypreucil
"""
import socket
import subprocess
import re

def is_connected():
    try:
        # connect to the host -- tells us if the host is actually reachable
        socket.create_connection(("www.google.com", 80))
        return True
    except OSError:
        pass
    return False

def get_wifi_networks():
    networks = []
    try:
        output = subprocess.run(["sudo","iw", "dev", "wlan0","scan"], capture_output=True).stdout.decode("utf-8")
        lines = output.split("\n")
        for line in lines:
            if "SSID" in line:
                try:
                    network_name = line.split(":")[1].replace('"', "")
                    networks.append(network_name[1:])
                except:
                    pass
    except Exception as e:
        print(e)
    return networks

def get_known_networks():
    fid = open("/etc/wpa_supplicant/wpa_supplicant.conf")
    lines = fid.readlines()
    nets = [re.findall(r'\tssid="(.*)"',l) for l in lines]
    known_networks = [n[0] for n in nets if n!=[]]
    return known_networks

# def check_connected():
#     res_hot_spot = False
#     web_server = False
#     while not is_connected():
#         if res_hot_spot == False:
#             # Case to deal with the broken autohotspot
#             print ('What wifi is avail?')
#             wifi_list = get_wifi_networks()
#             known_networks = get_known_networks()
#             check = all(item in known_networks for item in wifi_list)
#             if check:
#                 # This means we have a network saved that is available,
#                 # but the pi is not connected. This is due to two possible
#                 # issues.
#                 # 1 - The autohotspot has failed to recognize the available
#                 # netowork and has started to broadcast its own wifi
#                 # 2 - The user has changed the wifi password
#                 # Solution: Try to restart the autohotspot, then recheck
#                 # the connectivity.
#                 print ('restart the autohotspot')
#                 os.chdir('/home/admin')
#                 os.system('sudo systemctl restart autohotspot')
#                 res_auto_hotspot=True

#             else:
#                 # This is the case where there are no known networks
#                 # which means the user has changed the SSID or the weather
#                 # cube is out of range of the signal.
#                 print ('user needs to set up wifi')
#                 # Start the web server

#         elif res_hot_spot == True:
#             # This is the case where the we have determined there is a known
#             # wifi network in range, but reseting the hotspot failed to connect
#             # most likely due to an incorrect user password.
#             print ('User wifi password is incorrect')
#             # start web server

#     # we have broken out of the while loop which means we are now connected to
#     # the internet. We can now safely start the weather cube program.
#     print ('Starting pullcheck for weather tube')
#     subprocess.Popen(["python3", '/home/admin/pullcheck_tube/pullcheck-master/main.py']).returncode

# check_connected()
# Test Comment