docs: def get_settings(config_file):
      """Search and load a configuration file."""
      default_settings = {
          'general': {
              'endpoint': 'http://guacamole.antojitos.io/files/',
              'shortener': 'http://t.antojitos.io/api/v1/urls',
          }
      }
  
      settings = configparser.ConfigParser()
      try:
          settings.read_dict(default_settings)
      except AttributeError:
          # using python 2.7
          for section, options in default_settings.items():
              settings.add_section(section)
              for option, value in options.items():
                  settings.set(section, option, value)
  
      if config_file is not None and os.path.exists(config_file):
          settings.read(config_file)
          return settings
      if os.path.exists(CONFIG_FILE):
          settings.read(CONFIG_FILE)
          return settings
      return settings