1#!/usr/bin/env python3 2# 3# SPDX-License-Identifier: BSD-2-Clause 4# 5# Copyright © 2022. Rubicon Communications, LLC (Netgate). All Rights Reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29import argparse 30import logging 31logging.getLogger("scapy").setLevel(logging.CRITICAL) 32import scapy.all as sp 33import socket 34import sys 35 36PAYLOAD_MAGIC = bytes.fromhex('42c0ffee') 37 38def ping(send_if, dst_ip, length): 39 ether = sp.Ether() 40 ip = sp.IP(dst=dst_ip) 41 icmp = sp.ICMP(type='echo-request') 42 raw = sp.raw(PAYLOAD_MAGIC) 43 44 req = ether / ip / icmp / raw 45 req = req.build()[0:length] 46 47 sp.sendp(req, iface=send_if, verbose=False) 48 49def main(): 50 parser = argparse.ArgumentParser("pft_ether.py", 51 description="Ethernet test tool") 52 parser.add_argument('--sendif', nargs=1, 53 required=True, 54 help='The interface through which the packet(s) will be sent') 55 parser.add_argument('--to', nargs=1, 56 required=True, 57 help='The destination IP address for the ICMP echo request') 58 parser.add_argument('--len', nargs=1, 59 required=True, 60 help='The length of the packet') 61 62 args = parser.parse_args() 63 64 if '-' in args.len[0]: 65 s=args.len[0].split('-') 66 for i in range(int(s[0]), int(s[1]) + 1): 67 ping(args.sendif[0], args.to[0], i) 68 else: 69 ping(args.sendif[0], args.to[0], int(args.len[0])) 70 71if __name__ == '__main__': 72 main() 73