#!/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. # # $FreeBSD$ # import socket import logging logging.getLogger("scapy").setLevel(logging.CRITICAL) import scapy.all as sc import argparse IPPROTO_DIVERT = 258 def parse_args(): parser = argparse.ArgumentParser(description='divert socket tester') parser.add_argument('--dip', type=str, help='destination 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.socket(socket.AF_INET, socket.SOCK_RAW, IPPROTO_DIVERT) 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.socket(socket.AF_INET, socket.SOCK_RAW, IPPROTO_DIVERT) 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) / sc.ICMP(type='echo-request') with socket.socket(socket.AF_INET, socket.SOCK_RAW, IPPROTO_DIVERT) 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()