fix logging

logging.basicConfig(

    format="[%(asctime)s.%(msecs)03d] - %(levelname)s - %(message)s",

    datefmt='%Y/%b/%d %H:%M:%S',

    level=logging.DEBUG,

    filename='CASLogin.log')

logging.getLogger('requests').setLevel(logging.WARNING)

    handlers=[logging.FileHandler(filename='CASLogin.log', mode='a'), logging.StreamHandler()])

logger = logging.getLogger("CASLogin")

logger.setLevel(logging.DEBUG)

login = requests.session()

def do_login(url, username, password):

   soup_login = BeautifulSoup(login.get(url).content, 'html5lib')

   logging.info('Start to get login information')

   logger.info('Start to get login information')

   info = {}

   for element in soup_login.find('form', id='fm1').find_all('input'):

      if element.has_attr('value'):

         info[element['name']] = element['value']

   logging.info('Login information acquired.')

   logger.info('Login information acquired.')

   info['username'] = username

   info['password'] = password

   url = 'https://cas.sustc.edu.cn/cas/login?service={}'.format(url)

   logging.info('Login as ' + username)

   logger.info('Login as ' + username)

   r = login.post(url, data=info, timeout=30)

   logging.info('Login information posted to the CAS server.')

   logger.info('Login information posted to the CAS server.')

   soup_response = BeautifulSoup(r.content, 'html5lib')

   success = soup_response.find('div', {'class': 'success'})

             content = login.get(test.headers['Location'], timeout=10).content

             soup_login = BeautifulSoup(content, 'html5lib')

             if 'CAS' not in soup_login.title.string:

                logging.warning('Not connected to a SUSTC network')

                logger.warning('Not connected to a SUSTC network')

                return CONNECTED, None

             else:

                return NEED_LOGIN, re.search(r'window\.location = \'(.*)\';', soup_login.text).group(1)

          else:

             logging.warning('Recieved status code {code}, consider updating \'captive_portal_server\''.format(code=test.status_code))

             logger.warning('Recieved status code {code}, consider updating \'captive_portal_server\''.format(code=test.status_code))

             return CONNECTION_TIMEOUT, None

   except requests.RequestException:

       return CONNECTION_TIMEOUT, None

def main():

   logging.info('Program started.')

   logger.info('Program started.')

   try:

      os.chdir(os.path.dirname(sys.argv[0]))  # To read config in the same directory

   config = load_config()

   times_retry_login = config['max_times_retry_login']

   test_url = config['captive_portal_server']

   logging.info('Configurations successfully imported.')

   logger.info('Configurations successfully imported.')

   while True:

      logging.info('Checking network status...')

      logger.info('Checking network status...')

      status, rem_link = test_network(test_url)

      if status == CONNECTION_TIMEOUT:

         logging.info('Connection FAILED. Try again in ' + str(config['interval_retry_connection']) + ' sec.')

         logger.info('Connection FAILED. Try again in ' + str(config['interval_retry_connection']) + ' sec.')

         times_retry_login -= 1

      elif status == CONNECTED:

         logging.info('You are already logged in.')

         logger.info('You are already logged in.')

         break

      elif status == NEED_LOGIN:

         logging.info('You are offline. Starting login...')

         logger.info('You are offline. Starting login...')

         hostname = 'http://enet.10000.gd.cn:10001/sz/sz112/'

         url = hostname + rem_link

         if err:

            times_retry_login -= 1

            logging.error('Error occurred: ' + err.text)

            logger.error('Error occurred: ' + err.text)

         elif success:

            logging.info('Login successful')

            logger.info('Login successful')

            break

      if times_retry_login > 0:

         # If keep trying to login too many times, it may trigger security alarm on the CAS server

         logging.info('Try again in {time} sec. {attempt} attempt(s) remaining.'.format(time=config['interval_retry_connection'], attempt=times_retry_login))

         logger.info('Try again in {time} sec. {attempt} attempt(s) remaining.'.format(time=config['interval_retry_connection'], attempt=times_retry_login))

      else:

         logging.info('Attempts used up. The program will quit.')

         logger.info('Attempts used up. The program will quit.')

         sys.exit(-1)

      sleep(config['interval_retry_connection'])

   logging.info('Online.')

   logger.info('Online.')

   sys.exit(0)

   try:

      main()

   except Exception as e:

      logging.error("".join(traceback.format_exc()))

      logger.error("".join(traceback.format_exc()))