#!/usr/bin/env python
# -*- coding: utf-8 -*-

import scapy.all as scapy
import scapy.contrib.modbus as mb

def decode(pkt):
    prt=0
    f=open("truc.txt","w")
    if "ModbusADU" in pkt:
        grPkt=pkt["ModbusADU"].show(dump=True)
        lPkt=grPkt.splitlines()
        for i in lPkt:
            if "###" in i:
                prt=0
            if "Write" in i or "Read" in i:
                prt=1
            if prt==1:
                print(i)
    print("fini")

scapy.sniff(iface="lo", prn=decode)