def recv(self, x=MTU):
        pkt, sa_ll = self.ins.recvfrom(x)
        if sa_ll[2] == socket.PACKET_OUTGOING:
            return None
        if sa_ll[3] in conf.l2types:
            cls = conf.l2types[sa_ll[3]]
            lvl = 2
        elif sa_ll[1] in conf.l3types:
            cls = conf.l3types[sa_ll[1]]
            lvl = 3
        else:
            cls = conf.default_l2
            warning(
                "Unable to guess type (interface=%s protocol=%#x family=%i). Using %s",
                sa_ll[0], sa_ll[1], sa_ll[3], cls.name)
            lvl = 3

        try:
            pkt = cls(pkt)
        except KeyboardInterrupt:
            raise
        except:
            if conf.debug_dissector:
                raise
            pkt = conf.raw_layer(pkt)
        if lvl == 2:
            pkt = pkt.payload

        if pkt is not None:
            from scapy.arch import get_last_packet_timestamp
            pkt.time = get_last_packet_timestamp(self.ins)
        return pkt
Exemple #2
0
    def recv(self, x=MTU):
        pkt, sa_ll = self.ins.recvfrom(x)
        if sa_ll[2] == socket.PACKET_OUTGOING:
            return None
        if sa_ll[3] in conf.l2types:
            cls = conf.l2types[sa_ll[3]]
            lvl = 2
        elif sa_ll[1] in conf.l3types:
            cls = conf.l3types[sa_ll[1]]
            lvl = 3
        else:
            cls = conf.default_l2
            warning("Unable to guess type (interface=%s protocol=%#x family=%i). Using %s", sa_ll[0], sa_ll[1], sa_ll[3], cls.name)  # noqa: E501
            lvl = 3

        try:
            pkt = cls(pkt)
        except KeyboardInterrupt:
            raise
        except Exception:
            if conf.debug_dissector:
                raise
            pkt = conf.raw_layer(pkt)
        if lvl == 2:
            pkt = pkt.payload

        if pkt is not None:
            from scapy.arch import get_last_packet_timestamp
            pkt.time = get_last_packet_timestamp(self.ins)
        return pkt