config.py 文件源码

def check_signed_params(self, jwt_data):
        """Checks a JWT signature and message ID.

        Decodes the params, makes sure they pass signature (i.e., are valid),
        and then checks that we haven't seen the msgid before.

        TODO(matt): refactor as this was copied from federer_handlers.common.
                    Inheriting from common as before does not work because CI
                    cannot import ESL, an import that comes from
                    freeswitch_interconnect.

        Raises:
          ValueError if there are errors

        Returns:
          True if everything checks out
        """
        s = itsdangerous.JSONWebSignatureSerializer(self.conf['bts_secret'])
        try:
            data = s.loads(jwt_data)
        except itsdangerous.BadSignature:
            logger.emergency("Bad signature for request, ignoring.")
            raise ValueError("Bad signature")
        # Make sure the msg hasn't been seen before, if so, discard it.
        if "msgid" in data:
            if self.msgid_db.seen(str(data['msgid'])):
                logger.error("Endaga: Repeat msgid: %s" % (data['msgid'],))
                raise ValueError("Repeat msgid: %s" % (data['msgid'],))
        else:
            logger.error("Endaga: No message ID.")
            raise ValueError("No message ID.")
        return data