linux.py 文件源码

def __init__(self, type = ETH_P_ALL, filter=None, promisc=None, iface=None, nofilter=0):
        self.type = type
        self.ins = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.htons(type))
        self.ins.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 0)
        _flush_fd(self.ins)
        if iface:
            self.ins.bind((iface, type))
        if not nofilter:
            if conf.except_filter:
                if filter:
                    filter = "(%s) and not (%s)" % (filter, conf.except_filter)
                else:
                    filter = "not (%s)" % conf.except_filter
            if filter is not None:
                attach_filter(self.ins, filter)
        self.ins.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 2**30)
        self.outs = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.htons(type))
        self.outs.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, 2**30)
        if promisc is None:
            promisc = conf.promisc
        self.promisc = promisc
        if self.promisc:
            if iface is None:
                self.iff = get_if_list()
            else:
                if iface.__class__ is list:
                    self.iff = iface
                else:
                    self.iff = [iface]
            for i in self.iff:
                set_promisc(self.ins, i)