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#!/usr/bin/env python
# -
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2020 Alexander V. Chernikov
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
#
from socket import socket, PF_DIVERT, SOCK_RAW
import logging
logging.getLogger("scapy").setLevel(logging.CRITICAL)
import scapy.all as sc
import argparse
def parse_args():
parser = argparse.ArgumentParser(description='divert socket tester')
parser.add_argument('--dip', type=str, help='destination packet IP')
parser.add_argument('--sip', type=str, help='source packet IP')
parser.add_argument('--divert_port', type=int, default=6668,
help='divert port to use')
parser.add_argument('--test_name', type=str, required=True,
help='test name to run')
return parser.parse_args()
def ipdivert_ip_output_remote_success(args):
packet = sc.IP(dst=args.dip) / sc.ICMP(type='echo-request')
with socket(PF_DIVERT, SOCK_RAW, 0) as s:
s.bind(('0.0.0.0', args.divert_port))
s.sendto(bytes(packet), ('0.0.0.0', 0))
def ipdivert_ip6_output_remote_success(args):
packet = sc.IPv6(dst=args.dip) / sc.ICMPv6EchoRequest()
with socket(PF_DIVERT, SOCK_RAW, 0) as s:
s.bind(('0.0.0.0', args.divert_port))
s.sendto(bytes(packet), ('0.0.0.0', 0))
def ipdivert_ip_input_local_success(args):
"""Sends IPv4 packet to OS stack as inbound local packet."""
packet = sc.IP(dst=args.dip,src=args.sip) / sc.ICMP(type='echo-request')
with socket(PF_DIVERT, SOCK_RAW, 0) as s:
s.bind(('0.0.0.0', args.divert_port))
s.sendto(bytes(packet), (args.dip, 0))
# XXX: IPv6 local divert is currently not supported
# TODO: add IPv4 ifname output verification
def main():
args = parse_args()
test_ptr = globals()[args.test_name]
test_ptr(args)
if __name__ == '__main__':
main()
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