#!/usr/bin/env python

import scapy.all as scapy
import subprocess
import re
import maclookup
from maclookup import ApiClient
import logging

# 1. pip install maclookup
# 2. python3 sceptrescan.py
# 3. if ApiClient out of use, please get
# new ApiClient https://macaddress.io/

client = ApiClient('at_QY6om50bspgqg83KBf0fDHDaHbiRC')

#function to find gateway IP using subprocess and regex
def get_gateway():
    get_route = subprocess.check_output(["ip route"], shell=True)
    gateway_result = re.search(r"(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]\
    |2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)", str(get_route))
    return gateway_result.group(0)


def scan(ip):
    arp_request = scapy.ARP(pdst=ip) #create arp packet
    broadcast = scapy.Ether(dst="ff:ff:ff:ff:ff:ff")#direct to mac address
    arp_request_broadcast = broadcast/arp_request #join packets
    answered_list = scapy.srp(arp_request_broadcast, timeout=1, verbose=False)[0] #send and receive function


    clients_list = []
    for element in answered_list:
        client_dict = {"ip":element[1].psrc, "mac": element[1].hwsrc}
        mac_vendor = client.get_vendor(client_dict["mac"])
        macmac = {"macvendor":mac_vendor}
        client_dict.update(macmac)
        clients_list.append(client_dict)
    return clients_list

def print_result(results_list):
    print("IP\t\tAt MAC Address\t  Vendor Name")
    print("------------------------------------------------")
    for client in results_list:
        print(client["ip"] + "\t" + client["mac"], client["macvendor"] )


#get gateway ip and add subnet
gateway = get_gateway()
gateway = (gateway + "/24")
print("Scanning Gateway Address " + gateway + " for network clients")

scan_result = scan(gateway)
print_result(scan_result)