Class Route

scapy/route.py:31–247

##############################

class Route:
    def __init__(self):
        # type: () -> None
        self.routes = []  # type: List[Tuple[int, int, str, str, str, int]]
        self.invalidate_cache()
        if conf.route_autoload:
            self.resync()

    def invalidate_cache(self):
        # type: () -> None
        self.cache = {}  # type: Dict[Tuple[str, Optional[str]], Tuple[str, str, str]]

    def resync(self):
        # type: () -> None
        from scapy.arch import read_routes
        self.invalidate_cache()
        self.routes = read_routes()

    def __repr__(self):
        # type: () -> str
        rtlst = []  # type: List[Tuple[Union[str, List[str]], ...]]
        for net, msk, gw, iface, addr, metric in self.routes:
            if_repr = resolve_iface(iface).description
            rtlst.append((ltoa(net),
                          ltoa(msk),
                          gw,
                          if_repr,
                          addr,
                          str(metric)))

        return pretty_list(rtlst,
                           [("Network", "Netmask", "Gateway", "Iface", "Output IP", "Metric")])  # noqa: E501

    def make_route(self,
                   host=None,  # type: Optional[str]
                   net=None,  # type: Optional[str]
                   gw=None,  # type: Optional[str]
                   dev=None,  # type: Optional[str]
                   metric=1,  # type: int
                   ):
        # type: (...) -> Tuple[int, int, str, str, str, int]
        if host is not None:
            thenet, msk = host, 32
        elif net is not None:
            thenet, msk_b = net.split("/")
            msk = int(msk_b)
        else:
            raise Scapy_Exception("make_route: Incorrect parameters. You should specify a host or a net")  # noqa: E501
        if gw is None:
            gw = "0.0.0.0"
        if dev is None:
            if gw:
                nhop = gw
            else:
                nhop = thenet
            dev, ifaddr, _ = self.route(nhop)
        else:
            ifaddr = "0.0.0.0"  # acts as a 'via' in `ip addr add`