modem2.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

#  pip install python-simplemail

import logging
import RPi.GPIO as GPIO
import os
import time
from simplemail import Email


GPIO.setwarnings(False)
GPIO.cleanup()
GPIO.setmode(GPIO.BOARD)
GPIO.setup(7, GPIO.OUT)
GPIO.setup(11, GPIO.OUT)

SOCKET_RIGHT = 7
SOCKET_LEFT = 11
OFF = GPIO.LOW
ON = GPIO.HIGH
ONLINE = 0
OFFLINE = 1
GATEWAY = {'name': '192.168.0.1', 'try': 0, 'max': 2, 'stat': ONLINE, 'ipv6': 0}
WAN4 = {'name' :'unitymedia.de', 'try': 0, 'max': 5, 'stat': ONLINE, 'ipv6': 0}
WAN6 = {'name' :'computerbase.de', 'try': 0, 'max': 5, 'stat': ONLINE, 'ipv6': 1}
WAIT_LOOP = 5       # 5 secunden zwichen jedem ping
WAIT_RESTART = 180  # 180 zeit für das modem zu starten und verbinden
TICK = 0            # one tick is 5 seconds
TOCK = 12           # jede minute
msg = 0             # die nachricht per mail versendet

logging.basicConfig(filename='/media/modem/modem.log',
                    format='%(levelname)s %(asctime)s %(message)s',
                    level=logging.INFO  # DEBUG oder INFO
                    )


def SendMail(msg):
  mail = Email(smtp_server = 'smtp.gmail.com:465',
               smtp_user = '',
               smtp_password = '',
               use_ssl = True,
               from_address = '',
               to_address = '',
               subject = 'Modem TC7200',
               message = msg)
  mail.send()


def RestartSockets(left, right):
  logging.debug('RestartSockets wurde aufgerufen mit links = '
                + str(left) + ' und rechts = ' + str(right))
  if left:
    GPIO.output(SOCKET_LEFT, OFF)
  if right:
    GPIO.output(SOCKET_RIGHT, OFF)
  time.sleep(5)
  if left:
    GPIO.output(SOCKET_LEFT, ON)
  if right:
    GPIO.output(SOCKET_RIGHT, ON)


def ping(p):
  logging.debug('ping wurde aufgerufen Ziel:' + p['name']
                + ' Status:' + str(p['stat'])
                + ' Try:' + str(p['try'])
                + ' Max:' + str(p['max']))
  result = ''
  ping_command = 'ping'
  if p['ipv6'] == 1:
    ping_command += '6'
  ping_command += ' -q -c 1 ' + p['name'] + ' > /dev/null 2>&1'
  logging.debug(ping_command)
  response = os.system(ping_command)
  if response == ONLINE:
    if p['stat'] == OFFLINE:
      logging.info(p['name'] + ' wieder erreichbar.')
    p['try'] = 0
    p['stat'] = ONLINE
  else:
    p['try'] += 1
    logging.info(p['name'] + ' antwortet zum '
                 + str(p['try']) + 'ten mal nicht.')
    if p['try'] == p['max']:
      p['stat'] = OFFLINE
      logging.info('Limit von ' + str(p['max']) + ' wurde erreicht.')
      result = "{0}  {1} antwortet zum {2}ten mal nicht. Modem wird neugestartet".format(time.strftime('%d.%m.%Y %H:%M'), p['name'], p['try'])
  return result


logging.info('Script check modem gestartet')
try:
  while 1:
    time.sleep(WAIT_LOOP)
    TICK += 1
    result = ping(GATEWAY)
    if GATEWAY['stat'] == OFFLINE and result:
      RestartSockets(1, 1)
      GATEWAY['try'] = 0
      time.sleep(WAIT_RESTART)
      TICK = 0
      continue
    if TICK == TOCK:
      TICK = 0
      result = ping(WAN4)
      if WAN4['stat'] == OFFLINE and result:
        RestartSockets(1, 1)
        WAN4['try'] = 0
        time.sleep(WAIT_RESTART)
        continue
      result = ping(WAN6)
      if WAN6['stat'] == OFFLINE and result:
        RestartSockets(1, 1)
        WAN6['try'] = 0
        time.sleep(WAIT_RESTART)
      else:
        if not(GATEWAY['try']) and not(WAN4['try']) and not(WAN6['try']) and msg:
          SendMail(msg)
          msg = 0
finally:
  GPIO.cleanup()
  logging.info('script abgestürzt??')