Turn off/on E3372 connection

From: https://www.gitmemory.com/issue/arska/e3372/1/491995448

#!/usr/bin/env python

import sys
import requests
import xmltodict

class HuaweiE3372(object):
  BASE_URL = 'http://{host}'
  TOKEN_URL = '/api/webserver/SesTokInfo'
  SWITCH_URL = '/api/dialup/mobile-dataswitch'
  session = None

  def __init__(self,host='192.168.8.1'):
    self.host = host
    self.base_url = self.BASE_URL.format(host=host)
    self.session = requests.Session()

  def switch_modem(self, state='1'):
    try:
      # Get session and verification tokens from the modem
      r = self.session.get(self.base_url + self.TOKEN_URL, timeout=3)
      _dict = xmltodict.parse(r.text).get('response', None)

      # Build the switch request
      headers = {
        'Cookie': _dict['SesInfo'],
        '__RequestVerificationToken': _dict['TokInfo']
      }
      
      data = '<?xml version: "1.0" encoding="UTF-8"?><request><dataswitch>' + state + '</dataswitch></request>'

      r = self.session.post(self.base_url + self.SWITCH_URL, data=data, headers=headers, timeout=3)
      if r.status_code == 200:
        return True
      else:
        return False

    except Exception as ex:
      print("Failed to switch modem..")
      print(ex)
      return False
    

def main():
  e3372 = HuaweiE3372()

  # Pass '1' for on
  # Pass '0' for off
  e3372.switch_modem('1')

if __name__ == "__main__":
  main()