scan.py 文件源码

def ip2hostname(self,ip):
        try:
            hostname = socket.gethostbyaddr(ip)[0]
            return hostname
        except:
            pass
        try:
            query_data = "\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x20\x43\x4b\x41\x41" + \
                         "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" + \
                         "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x00\x00\x21\x00\x01"
            dport = 137
            _s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
            _s.settimeout(3)
            _s.sendto(query_data, (ip, dport))
            x = _s.recvfrom(1024)
            tmp = x[0][57:]
            hostname = tmp.split("\x00", 2)[0].strip()
            hostname = hostname.split()[0]
            return hostname
        except:
            pass