gistfile1.txt

#!/usr/bin/env python3


import argparse
import inspect
import scapy.all
import scapy.main
import scapy.contrib.nfs


def main ():
    parser = argparse.ArgumentParser()
    parser.add_argument('--iface')
    args = parser.parse_args()

    scapy.all.load_contrib('nfs')

    a = scapy.all.sniff(filter='tcp port 2049 or udp port 2049', iface=args.iface, prn=lambda x: x.show(), lfilter=nfs_filter)
    a.summary()
    for each in a:
        print(each)


def nfs_filter (p):
    for thing_name in dir(scapy.contrib.nfs):
        thing = getattr(scapy.contrib.nfs, thing_name)
        if inspect.isclass(thing) and issubclass(thing, scapy.all.Packet):
            if thing in p:
                print(thing)
                return True
    else:
        return False

if __name__ == '__main__':
    main()