docs: def login(self, username, password):
          "Login to the database and store cookies for upcoming requests."
          log.debug("Logging in to the DB")
          opener = self._build_opener()
          values = {'usr': username, 'pwd': password}
          req = self._make_request(self._login_url, values)
          try:
              log.debug("Sending login request")
              f = opener.open(req)
          except URLError as e:
              log.error("Failed to connect to the database -> probably down!")
              log.error("Error from database server:\n    {0}".format(e))
              return False
          html = f.read()
          failed_auth_message = 'Bad username or password'
          if failed_auth_message in str(html):
              log.error(failed_auth_message)
              return False
          return True