sfp_dns.py 文件源码

def resolveIP(self, ipaddr):
        ret = list()
        self.sf.debug("Performing reverse-resolve of " + ipaddr)

        if ipaddr in self.resolveCache:
            self.sf.debug("Returning cached result for " + ipaddr + " (" +
                          str(self.resolveCache[ipaddr]) + ")")
            return self.resolveCache[ipaddr]

        try:
            addrs = self.sf.normalizeDNS(socket.gethostbyaddr(ipaddr))
            self.resolveCache[ipaddr] = addrs
            self.sf.debug("Resolved " + ipaddr + " to: " + str(addrs))
            return addrs
        except BaseException as e:
            self.sf.debug("Unable to resolve " + ipaddr + " (" + str(e) + ")")
            self.resolveCache[ipaddr] = list()
            return ret

    # Resolve a host