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netpfil tests: improve pft_ping.py

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Multiple improvements to pft_ping.py:

* Automatically use IPv6 when IPv6 addresses are used, --ip6 is not needed.
* Building of ping requests and parsing of ping replies is done layer by
  layer. This way most arguments are available both for IPv6 and IPv4,
  for ICMP and TCP.
* Use argument groups for improved readability.
* Change ToS and TTL argument name to TC and HL to reflect the modern
  IPv6 nomenclature. The argument still set related IPv4 header fields
  properly.
* Instead of sniffing for the very specific case of duplicated packets,
  allow for sniffing on multiple interfaces.
* Report which sniffer has failed by setting bits of error code.
* Raise meaningful exceptions when irrecoverable errors happen.
* Make IPv4 fragmentation flags configurable.
* Make IPv6 HL / IPv4 TTL configurable.
* Make TCP MSS configurable.
* Make TCP sequence number configurable.
* Make ICMP payload size configurable.
* Add debug output.
* Move command line argument parsing out of network functions.
* Make the code somehow PEP-8 compliant.

MFC after:	1 week
Sponsored by:	InnoGames GmbH
Differential Revision:	https://reviews.freebsd.org/D38122
This commit is contained in:
Kajetan Staszkiewicz 2023-01-21 03:44:52 +01:00 committed by Kristof Provost
parent a39dedeb31
commit f57218e469
7 changed files with 448 additions and 288 deletions
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689
tests/sys/netpfil/common/pft_ping.py
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@ -3,6 +3,7 @@
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2017 Kristof Provost <kp@FreeBSD.org>
# Copyright (c) 2023 Kajetan Staszkiewicz <vegeta@tuxpowered.net>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
@ -29,333 +30,505 @@
import argparse
import logging
logging.getLogger("scapy").setLevel(logging.CRITICAL)
import math
import scapy.all as sp
import socket
import sys
from copy import copy
from sniffer import Sniffer
logging.basicConfig(format='%(message)s')
LOGGER = logging.getLogger(__name__)
PAYLOAD_MAGIC = bytes.fromhex('42c0ffee')
dup_found = 0
def build_payload(l):
pl = len(PAYLOAD_MAGIC)
ret = PAYLOAD_MAGIC * math.floor(l/pl)
ret += PAYLOAD_MAGIC[0:(l % pl)]
return ret
def check_dup(args, packet):
"""
Verify that this is an ICMP packet, and that we only see one
"""
global dup_found
icmp = packet.getlayer(sp.ICMP)
if not icmp:
return False
def prepare_ipv6(dst_address, send_params):
src_address = send_params.get('src_address')
hlim = send_params.get('hlim')
tc = send_params.get('tc')
ip6 = sp.IPv6(dst=dst_address)
if src_address:
ip6.src = src_address
if hlim:
ip6.hlim = hlim
if tc:
ip6.tc = tc
return ip6
raw = packet.getlayer(sp.Raw)
if not raw:
return False
if raw.load != PAYLOAD_MAGIC:
return False
dup_found = dup_found + 1
return False
def prepare_ipv4(dst_address, send_params):
src_address = send_params.get('src_address')
flags = send_params.get('flags')
tos = send_params.get('tc')
ttl = send_params.get('hlim')
ip = sp.IP(dst=dst_address)
if src_address:
ip.src = src_address
if flags:
ip.flags = flags
if tos:
ip.tos = tos
if ttl:
ip.ttl = ttl
return ip
def check_ping_request(args, packet):
if args.ip6:
return check_ping6_request(args, packet)
else:
return check_ping4_request(args, packet)
def check_ping4_request(args, packet):
"""
Verify that the packet matches what we'd have sent
"""
dst_ip = args.to[0]
def send_icmp_ping(dst_address, sendif, send_params):
send_length = send_params['length']
ether = sp.Ether()
if ':' in dst_address:
ip6 = prepare_ipv6(dst_address, send_params)
icmp = sp.ICMPv6EchoRequest(data=sp.raw(build_payload(send_length)))
req = ether / ip6 / icmp
else:
ip = prepare_ipv4(dst_address, send_params)
icmp = sp.ICMP(type='echo-request')
raw = sp.raw(build_payload(send_length))
req = ether / ip / icmp / raw
sp.sendp(req, sendif, verbose=False)
ip = packet.getlayer(sp.IP)
if not ip:
return False
if ip.dst != dst_ip:
return False
icmp = packet.getlayer(sp.ICMP)
if not icmp:
return False
if sp.icmptypes[icmp.type] != 'echo-request':
return False
def send_tcp_syn(dst_address, sendif, send_params):
tcpopt_unaligned = send_params.get('tcpopt_unaligned')
seq = send_params.get('seq')
mss = send_params.get('mss')
ether = sp.Ether()
opts=[('Timestamp', (1, 1)), ('MSS', mss if mss else 1280)]
if tcpopt_unaligned:
opts = [('NOP', 0 )] + opts
if ':' in dst_address:
ip = prepare_ipv6(dst_address, send_params)
else:
ip = prepare_ipv4(dst_address, send_params)
tcp = sp.TCP(dport=666, flags='S', options=opts, seq=seq)
req = ether / ip / tcp
sp.sendp(req, iface=sendif, verbose=False)
raw = packet.getlayer(sp.Raw)
if not raw:
return False
if raw.load != PAYLOAD_MAGIC:
return False
# Wait to check expectations until we've established this is the packet we
# sent.
if args.expect_tos:
if ip.tos != int(args.expect_tos[0]):
print("Unexpected ToS value %d, expected %d" \
% (ip.tos, int(args.expect_tos[0])))
return False
def send_ping(dst_address, sendif, ping_type, send_params):
if ping_type == 'icmp':
send_icmp_ping(dst_address, sendif, send_params)
elif ping_type == 'tcpsyn':
send_tcp_syn(dst_address, sendif, send_params)
else:
raise Exception('Unspported ping type')
return True
def check_ping6_request(args, packet):
"""
Verify that the packet matches what we'd have sent
"""
dst_ip = args.to[0]
def check_ipv4(expect_params, packet):
src_address = expect_params.get('src_address')
dst_address = expect_params.get('dst_address')
flags = expect_params.get('flags')
tos = expect_params.get('tc')
ttl = expect_params.get('hlim')
ip = packet.getlayer(sp.IP)
if not ip:
LOGGER.debug('Packet is not IPv4!')
return False
if src_address and ip.src != src_address:
LOGGER.debug('Source IPv4 address does not match!')
return False
if dst_address and ip.dst != dst_address:
LOGGER.debug('Destination IPv4 address does not match!')
return False
chksum = ip.chksum
ip.chksum = None
new_chksum = sp.IP(sp.raw(ip)).chksum
if chksum != new_chksum:
LOGGER.debug(f'Expected IP checksum {new_chksum} but found {chksum}')
return False
if flags and ip.flags != flags:
LOGGER.debug(f'Wrong IP flags value {ip.flags}, expected {flags}')
return False
if tos and ip.tos != tos:
LOGGER.debug(f'Wrong ToS value {ip.tos}, expected {tos}')
return False
if ttl and ip.ttl != ttl:
LOGGER.debug(f'Wrong TTL value {ip.ttl}, expected {ttl}')
return False
return True
ip = packet.getlayer(sp.IPv6)
if not ip:
return False
if ip.dst != dst_ip:
return False
icmp = packet.getlayer(sp.ICMPv6EchoRequest)
if not icmp:
return False
if icmp.data != PAYLOAD_MAGIC:
return False
def check_ipv6(expect_params, packet):
src_address = expect_params.get('src_address')
dst_address = expect_params.get('dst_address')
flags = expect_params.get('flags')
hlim = expect_params.get('hlim')
tc = expect_params.get('tc')
ip6 = packet.getlayer(sp.IPv6)
if not ip6:
LOGGER.debug('Packet is not IPv6!')
return False
if src_address and ip6.src != src_address:
LOGGER.debug('Source IPv6 address does not match!')
return False
if dst_address and ip6.dst != dst_address:
LOGGER.debug('Destination IPv6 address does not match!')
return False
# IPv6 has no IP-level checksum.
if flags:
raise Exception("There's no fragmentation flags in IPv6")
if hlim and ip6.hlim != hlim:
LOGGER.debug(f'Wrong Hop Limit value {ip6.hlim}, expected {hlim}')
return False
if tc and ip6.tc != tc:
LOGGER.debug(f'Wrong TC value {ip6.tc}, expected {tc}')
return False
return True
# Wait to check expectations until we've established this is the packet we
# sent.
if args.expect_tc:
if ip.tc != int(args.expect_tc[0]):
print("Unexpected traffic class value %d, expected %d" \
% (ip.tc, int(args.expect_tc[0])))
return False
return True
def check_ping_4(expect_params, packet):
expect_length = expect_params['length']
if not check_ipv4(expect_params, packet):
return False
icmp = packet.getlayer(sp.ICMP)
if not icmp:
LOGGER.debug('Packet is not IPv4 ICMP!')
return False
raw = packet.getlayer(sp.Raw)
if not raw:
LOGGER.debug('Packet contains no payload!')
return False
if raw.load != build_payload(expect_length):
LOGGER.debug('Payload magic does not match!')
return False
return True
def check_ping_reply(args, packet):
if args.ip6:
return check_ping6_reply(args, packet)
else:
return check_ping4_reply(args, packet)
def check_ping4_reply(args, packet):
"""
Check that this is a reply to the ping request we sent
"""
dst_ip = args.to[0]
def check_ping_request_4(expect_params, packet):
if not check_ping_4(expect_params, packet):
return False
icmp = packet.getlayer(sp.ICMP)
if sp.icmptypes[icmp.type] != 'echo-request':
LOGGER.debug('Packet is not IPv4 ICMP Echo Request!')
return False
return True
ip = packet.getlayer(sp.IP)
if not ip:
return False
if ip.src != dst_ip:
return False
icmp = packet.getlayer(sp.ICMP)
if not icmp:
return False
if sp.icmptypes[icmp.type] != 'echo-reply':
return False
def check_ping_reply_4(expect_params, packet):
if not check_ping_4(expect_params, packet):
return False
icmp = packet.getlayer(sp.ICMP)
if sp.icmptypes[icmp.type] != 'echo-reply':
LOGGER.debug('Packet is not IPv4 ICMP Echo Reply!')
return False
return True
raw = packet.getlayer(sp.Raw)
if not raw:
return False
if raw.load != PAYLOAD_MAGIC:
return False
if args.expect_tos:
if ip.tos != int(args.expect_tos[0]):
print("Unexpected ToS value %d, expected %d" \
% (ip.tos, int(args.expect_tos[0])))
return False
def check_ping_request_6(expect_params, packet):
expect_length = expect_params['length']
if not check_ipv6(expect_params, packet):
return False
icmp = packet.getlayer(sp.ICMPv6EchoRequest)
if not icmp:
LOGGER.debug('Packet is not IPv6 ICMP Echo Request!')
return False
if icmp.data != build_payload(expect_length):
LOGGER.debug('Payload magic does not match!')
return False
return True
return True
def check_ping6_reply(args, packet):
"""
Check that this is a reply to the ping request we sent
"""
dst_ip = args.to[0]
def check_ping_reply_6(expect_params, packet):
expect_length = expect_params['length']
if not check_ipv6(expect_params, packet):
return False
icmp = packet.getlayer(sp.ICMPv6EchoReply)
if not icmp:
LOGGER.debug('Packet is not IPv6 ICMP Echo Reply!')
return False
if icmp.data != build_payload(expect_length):
LOGGER.debug('Payload magic does not match!')
return False
return True
ip = packet.getlayer(sp.IPv6)
if not ip:
return False
if ip.src != dst_ip:
return False
icmp = packet.getlayer(sp.ICMPv6EchoReply)
if not icmp:
print("No echo reply!")
return False
def check_ping_request(expect_params, packet):
src_address = expect_params.get('src_address')
dst_address = expect_params.get('dst_address')
if not (src_address or dst_address):
raise Exception('Source or destination address must be given to match the ping request!')
if (
(src_address and ':' in src_address) or
(dst_address and ':' in dst_address)
):
return check_ping_request_6(expect_params, packet)
else:
return check_ping_request_4(expect_params, packet)
if icmp.data != PAYLOAD_MAGIC:
print("data mismatch")
return False
if args.expect_tc:
if ip.tc != int(args.expect_tc[0]):
print("Unexpected traffic class value %d, expected %d" \
% (ip.tc, int(args.expect_tc[0])))
return False
def check_ping_reply(expect_params, packet):
src_address = expect_params.get('src_address')
dst_address = expect_params.get('dst_address')
if not (src_address or dst_address):
raise Exception('Source or destination address must be given to match the ping reply!')
if (
(src_address and ':' in src_address) or
(dst_address and ':' in dst_address)
):
return check_ping_reply_6(expect_params, packet)
else:
return check_ping_reply_4(expect_params, packet)
return True
def ping(send_if, dst_ip, args):
ether = sp.Ether()
ip = sp.IP(dst=dst_ip)
icmp = sp.ICMP(type='echo-request')
raw = sp.raw(PAYLOAD_MAGIC)
def check_tcp(expect_params, packet):
tcp_flags = expect_params.get('tcp_flags')
mss = expect_params.get('mss')
seq = expect_params.get('seq')
tcp = packet.getlayer(sp.TCP)
if not tcp:
LOGGER.debug('Packet is not TCP!')
return False
chksum = tcp.chksum
tcp.chksum = None
newpacket = sp.Ether(sp.raw(packet[sp.Ether]))
new_chksum = newpacket[sp.TCP].chksum
if chksum != new_chksum:
LOGGER.debug(f'Wrong TCP checksum {chksum}, expected {new_chksum}!')
return False
if tcp_flags and tcp.flags != tcp_flags:
LOGGER.debug(f'Wrong TCP flags {tcp.flags}, expected {tcp_flags}!')
return False
if seq:
if tcp_flags == 'S':
tcp_seq = tcp.seq
elif tcp_flags == 'SA':
tcp_seq = tcp.ack - 1
if seq != tcp_seq:
LOGGER.debug(f'Wrong TCP Sequence Number {tcp_seq}, expected {seq}')
return False
if mss:
for option in tcp.options:
if option[0] == 'MSS':
if option[1] != mss:
LOGGER.debug(f'Wrong TCP MSS {option[1]}, expected {mss}')
return False
return True
if args.send_tos:
ip.tos = int(args.send_tos[0])
if args.fromaddr:
ip.src = args.fromaddr[0]
def check_tcp_syn_request_4(expect_params, packet):
if not check_ipv4(expect_params, packet):
return False
if not check_tcp(expect_params | {'tcp_flags': 'S'}, packet):
return False
return True
req = ether / ip / icmp / raw
sp.sendp(req, iface=send_if, verbose=False)
def ping6(send_if, dst_ip, args):
ether = sp.Ether()
ip6 = sp.IPv6(dst=dst_ip)
icmp = sp.ICMPv6EchoRequest(data=sp.raw(PAYLOAD_MAGIC))
def check_tcp_syn_reply_4(expect_params, packet):
if not check_ipv4(expect_params, packet):
return False
if not check_tcp(expect_params | {'tcp_flags': 'SA'}, packet):
return False
return True
if args.send_tc:
ip6.tc = int(args.send_tc[0])
if args.fromaddr:
ip6.src = args.fromaddr[0]
def check_tcp_syn_request_6(expect_params, packet):
if not check_ipv6(expect_params, packet):
return False
if not check_tcp(expect_params | {'tcp_flags': 'S'}, packet):
return False
return True
req = ether / ip6 / icmp
sp.sendp(req, iface=send_if, verbose=False)
def check_tcpsyn(args, packet):
dst_ip = args.to[0]
def check_tcp_syn_reply_6(expect_params, packet):
if not check_ipv6(expect_params, packet):
return False
if not check_tcp(expect_params | {'tcp_flags': 'SA'}, packet):
return False
return True
ip = packet.getlayer(sp.IP)
if not ip:
return False
if ip.dst != dst_ip:
return False
tcp = packet.getlayer(sp.TCP)
if not tcp:
return False
def check_tcp_syn_request(expect_params, packet):
src_address = expect_params.get('src_address')
dst_address = expect_params.get('dst_address')
if not (src_address or dst_address):
raise Exception('Source or destination address must be given to match the tcp syn request!')
if (
(src_address and ':' in src_address) or
(dst_address and ':' in dst_address)
):
return check_tcp_syn_request_6(expect_params, packet)
else:
return check_tcp_syn_request_4(expect_params, packet)
# Verify IP checksum
chksum = ip.chksum
ip.chksum = None
new_chksum = sp.IP(sp.raw(ip)).chksum
if chksum != new_chksum:
print("Expected IP checksum %x but found %x\n" % (new_cshkum, chksum))
return False
# Verify TCP checksum
chksum = tcp.chksum
packet_raw = sp.raw(packet)
tcp.chksum = None
newpacket = sp.Ether(sp.raw(packet[sp.Ether]))
new_chksum = newpacket[sp.TCP].chksum
if chksum != new_chksum:
print("Expected TCP checksum %x but found %x\n" % (new_chksum, chksum))
return False
def check_tcp_syn_reply(expect_params, packet):
src_address = expect_params.get('src_address')
dst_address = expect_params.get('dst_address')
if not (src_address or dst_address):
raise Exception('Source or destination address must be given to match the tcp syn reply!')
if (
(src_address and ':' in src_address) or
(dst_address and ':' in dst_address)
):
return check_tcp_syn_reply_6(expect_params, packet)
else:
return check_tcp_syn_reply_4(expect_params, packet)
return True
def tcpsyn(send_if, dst_ip, args):
opts=[('Timestamp', (1, 1)), ('MSS', 1280)]
def setup_sniffer(recvif, ping_type, sniff_type, expect_params):
if ping_type == 'icmp' and sniff_type == 'request':
checkfn = check_ping_request
elif ping_type == 'icmp' and sniff_type == 'reply':
checkfn = check_ping_reply
elif ping_type == 'tcpsyn' and sniff_type == 'request':
checkfn = check_tcp_syn_request
elif ping_type == 'tcpsyn' and sniff_type == 'reply':
checkfn = check_tcp_syn_reply
else:
raise Exception('Unspported ping or sniff type')
if args.tcpopt_unaligned:
opts = [('NOP', 0 )] + opts
return Sniffer(expect_params, checkfn, recvif)
ether = sp.Ether()
ip = sp.IP(dst=dst_ip)
tcp = sp.TCP(dport=666, flags='S', options=opts)
req = ether / ip / tcp
sp.sendp(req, iface=send_if, verbose=False)
def parse_args():
parser = argparse.ArgumentParser("pft_ping.py",
description="Ping test tool")
# Parameters of sent ping request
parser.add_argument('--sendif', nargs=1,
required=True,
help='The interface through which the packet(s) will be sent')
parser.add_argument('--to', nargs=1,
required=True,
help='The destination IP address for the ping request')
parser.add_argument('--ping-type',
choices=('icmp', 'tcpsyn'),
help='Type of ping: ICMP (default) or TCP SYN',
default='icmp')
parser.add_argument('--fromaddr', nargs=1,
help='The source IP address for the ping request')
# Where to look for packets to analyze.
# The '+' format is ugly as it mixes positional with optional syntax.
# But we have no positional parameters so I guess it's fine to use it.
parser.add_argument('--recvif', nargs='+',
help='The interfaces on which to expect the ping request')
parser.add_argument('--replyif', nargs='+',
help='The interfaces which to expect the ping response')
# Packet settings
parser_send = parser.add_argument_group('Values set in transmitted packets')
parser_send.add_argument('--send-flags', nargs=1, type=str,
help='IPv4 fragmentation flags')
parser_send.add_argument('--send-hlim', nargs=1, type=int,
help='IPv6 Hop Limit or IPv4 Time To Live')
parser_send.add_argument('--send-mss', nargs=1, type=int,
help='TCP Maximum Segment Size')
parser_send.add_argument('--send-seq', nargs=1, type=int,
help='TCP sequence number')
parser_send.add_argument('--send-length', nargs=1, type=int,
default=[len(PAYLOAD_MAGIC)], help='ICMP Echo Request payload size')
parser_send.add_argument('--send-tc', nargs=1, type=int,
help='IPv6 Traffic Class or IPv4 DiffServ / ToS')
parser_send.add_argument('--send-tcpopt-unaligned', action='store_true',
help='Include unaligned TCP options')
# Expectations
parser_expect = parser.add_argument_group('Values expected in sniffed packets')
parser_expect.add_argument('--expect-flags', nargs=1, type=str,
help='IPv4 fragmentation flags')
parser_expect.add_argument('--expect-hlim', nargs=1, type=int,
help='IPv6 Hop Limit or IPv4 Time To Live')
parser_expect.add_argument('--expect-mss', nargs=1, type=int,
help='TCP Maximum Segment Size')
parser_send.add_argument('--expect-seq', nargs=1, type=int,
help='TCP sequence number')
parser_expect.add_argument('--expect-tc', nargs=1, type=int,
help='IPv6 Traffic Class or IPv4 DiffServ / ToS')
parser.add_argument('-v', '--verbose', action='store_true',
help=('Enable verbose logging. Apart of potentially useful information '
'you might see warnings from parsing packets like NDP or other '
'packets not related to the test being run. Use only when '
'developing because real tests expect empty stderr and stdout.'))
return parser.parse_args()
def main():
parser = argparse.ArgumentParser("pft_ping.py",
description="Ping test tool")
parser.add_argument('--sendif', nargs=1,
required=True,
help='The interface through which the packet(s) will be sent')
parser.add_argument('--recvif', nargs=1,
help='The interface on which to expect the ICMP echo request')
parser.add_argument('--replyif', nargs=1,
help='The interface on which to expect the ICMP echo response')
parser.add_argument('--checkdup', nargs=1,
help='The interface on which to expect the duplicated ICMP packets')
parser.add_argument('--ip6', action='store_true',
help='Use IPv6')
parser.add_argument('--to', nargs=1,
required=True,
help='The destination IP address for the ICMP echo request')
parser.add_argument('--fromaddr', nargs=1,
help='The source IP address for the ICMP echo request')
args = parse_args()
# TCP options
parser.add_argument('--tcpsyn', action='store_true',
help='Send a TCP SYN packet')
parser.add_argument('--tcpopt_unaligned', action='store_true',
help='Include unaligned TCP options')
if args.verbose:
LOGGER.setLevel(logging.DEBUG)
# Packet settings
parser.add_argument('--send-tos', nargs=1,
help='Set the ToS value for the transmitted packet')
parser.add_argument('--send-tc', nargs=1,
help='Set the traffic class value for the transmitted packet')
# Dig out real values of program arguments
send_if = args.sendif[0]
reply_ifs = args.replyif
recv_ifs = args.recvif
dst_address = args.to[0]
# Expectations
parser.add_argument('--expect-tos', nargs=1,
help='The expected ToS value in the received packet')
parser.add_argument('--expect-tc', nargs=1,
help='The expected traffic class value in the received packet')
# Standardize parameters which have nargs=1.
send_params = {}
expect_params = {}
for param_name in ('flags', 'hlim', 'length', 'mss', 'seq', 'tc'):
param_arg = vars(args).get(f'send_{param_name}')
send_params[param_name] = param_arg[0] if param_arg else None
param_arg = vars(args).get(f'expect_{param_name}')
expect_params[param_name] = param_arg[0] if param_arg else None
args = parser.parse_args()
expect_params['length'] = send_params['length']
send_params['tcpopt_unaligned'] = args.send_tcpopt_unaligned
send_params['src_address'] = args.fromaddr[0] if args.fromaddr else None
# We may not have a default route. Tell scapy where to start looking for routes
sp.conf.iface6 = args.sendif[0]
# We may not have a default route. Tell scapy where to start looking for routes
sp.conf.iface6 = send_if
sniffer = None
if not args.recvif is None:
checkfn=check_ping_request
if args.tcpsyn:
checkfn=check_tcpsyn
# Configuration sanity checking.
if not (reply_ifs or recv_ifs):
raise Exception('With no reply or recv interface specified no traffic '
'can be sniffed and verified!'
)
sniffer = Sniffer(args, checkfn, args.recvif[0])
sniffers = []
replysniffer = None
if not args.replyif is None:
checkfn=check_ping_reply
replysniffer = Sniffer(args, checkfn, args.replyif[0])
if recv_ifs:
sniffer_params = copy(expect_params)
sniffer_params['src_address'] = None
sniffer_params['dst_address'] = dst_address
for iface in recv_ifs:
LOGGER.debug(f'Installing receive sniffer on {iface}')
sniffers.append(
setup_sniffer(iface, args.ping_type, 'request', sniffer_params,
))
dupsniffer = None
if args.checkdup is not None:
dupsniffer = Sniffer(args, check_dup, args.checkdup[0])
if reply_ifs:
sniffer_params = copy(expect_params)
sniffer_params['src_address'] = dst_address
sniffer_params['dst_address'] = None
for iface in reply_ifs:
LOGGER.debug(f'Installing reply sniffer on {iface}')
sniffers.append(
setup_sniffer(iface, args.ping_type, 'reply', sniffer_params,
))
if args.tcpsyn:
tcpsyn(args.sendif[0], args.to[0], args)
else:
if args.ip6:
ping6(args.sendif[0], args.to[0], args)
else:
ping(args.sendif[0], args.to[0], args)
LOGGER.debug(f'Installed {len(sniffers)} sniffers')
if dupsniffer:
dupsniffer.join()
if dup_found != 1:
sys.exit(1)
send_ping(dst_address, send_if, args.ping_type, send_params)
if sniffer:
sniffer.join()
err = 0
sniffer_num = 0
for sniffer in sniffers:
sniffer.join()
if sniffer.correctPackets == 1:
LOGGER.debug(f'Expected ping has been sniffed on {sniffer._recvif}.')
else:
# Set a bit in err for each failed sniffer.
err |= 1<<sniffer_num
if sniffer.correctPackets > 1:
LOGGER.debug(f'Duplicated ping has been sniffed on {sniffer._recvif}!')
else:
LOGGER.debug(f'Expected ping has not been sniffed on {sniffer._recvif}!')
sniffer_num += 1
if sniffer.correctPackets:
sys.exit(0)
else:
sys.exit(1)
return err
if replysniffer:
replysniffer.join()
if replysniffer.correctPackets:
sys.exit(0)
else:
sys.exit(1)
if __name__ == '__main__':
main()
sys.exit(main())

10
tests/sys/netpfil/common/tos.sh
View File

@ -68,7 +68,7 @@ tos_body()
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--expect-tos 36
--expect-tc 36
# Check if the firewall is able to set the ToS bits
# and persists the EN bits (if already set)
@ -82,8 +82,8 @@ tos_body()
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--send-tos 3 \
--expect-tos 39
--send-tc 3 \
--expect-tc 39
# Check if the firewall is able to filter the
# packets based on the ToS value
@ -97,13 +97,13 @@ tos_body()
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--send-tos 36
--send-tc 36
atf_check -s exit:0 $(atf_get_srcdir)/pft_ping.py \
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--send-tos 32
--send-tc 32
}
tos_cleanup()

6
tests/sys/netpfil/pf/checksum.sh
View File

@ -64,15 +64,15 @@ unaligned_body()
--sendif ${epair_in}a \
--to 198.51.100.2 \
--recvif ${epair_out}b \
--tcpsyn
--ping-type tcpsyn
# And unaligned
atf_check -s exit:0 ${common_dir}/pft_ping.py \
--sendif ${epair_in}a \
--to 198.51.100.2 \
--recvif ${epair_out}b \
--tcpsyn \
--tcpopt_unaligned
--ping-type tcpsyn \
--send-tcpopt-unaligned
}
unaligned_cleanup()

3
tests/sys/netpfil/pf/dup.sh
View File

@ -67,8 +67,7 @@ dup_to_body()
atf_check -s exit:0 ${common_dir}/pft_ping.py \
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recv ${epair_recv}a \
--checkdup ${epair_dupto}a
--recv ${epair_recv}a ${epair_dupto}a
}
dup_to_cleanup()

5
tests/sys/netpfil/pf/forward.sh
View File

@ -122,7 +122,6 @@ v6_body()
# Sanity check, can we forward ICMP echo requests without pf?
atf_check -s exit:0 ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair_send}a \
--to 2001:db8:43::3 \
--recvif ${epair_recv}a
@ -133,7 +132,6 @@ v6_body()
pft_set_rules alcatraz \
"block in inet6 proto icmp6 icmp6-type echoreq"
atf_check -s exit:1 ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair_send}a \
--to 2001:db8:43::3 \
--recvif ${epair_recv}a
@ -142,7 +140,6 @@ v6_body()
pft_set_rules alcatraz \
"block out inet6 proto icmp6 icmp6-type echoreq"
atf_check -s exit:1 -e ignore ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair_send}a \
--to 2001:db8:43::3 \
--recvif ${epair_recv}a
@ -152,7 +149,6 @@ v6_body()
"block out" \
"pass out inet6 proto icmp6"
atf_check -s exit:0 ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair_send}a \
--to 2001:db8:43::3 \
--recvif ${epair_recv}a
@ -162,7 +158,6 @@ v6_body()
"block out inet6 proto icmp6 icmp6-type echoreq" \
"pass in proto icmp"
atf_check -s exit:1 ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair_send}a \
--to 2001:db8:43::3 \
--recvif ${epair_recv}a

1
tests/sys/netpfil/pf/killstate.sh
View File

@ -130,7 +130,6 @@ v6_body()
# Sanity check & establish state
atf_check -s exit:0 -o ignore ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair}a \
--to 2001:db8::2 \
--replyif ${epair}a

22
tests/sys/netpfil/pf/set_tos.sh
View File

@ -66,7 +66,7 @@ v4_body()
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--expect-tos 42
--expect-tc 42
# The requested ToS is set
pft_set_rules alcatraz "scrub out proto icmp set-tos 42"
@ -74,7 +74,7 @@ v4_body()
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--expect-tos 42
--expect-tc 42
# ToS is not changed if the scrub rule does not match
pft_set_rules alcatraz "scrub out proto tcp set-tos 42"
@ -82,7 +82,7 @@ v4_body()
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--expect-tos 42
--expect-tc 42
# Multiple scrub rules match as expected
pft_set_rules alcatraz "scrub out proto tcp set-tos 13" \
@ -91,15 +91,15 @@ v4_body()
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--expect-tos 14
--expect-tc 14
# And this works even if the packet already has ToS values set
atf_check -s exit:0 ${common_dir}/pft_ping.py \
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--send-tos 42 \
--expect-tos 14
--send-tc 42 \
--expect-tc 14
# ToS values are unmolested if the packets do not match a scrub rule
pft_set_rules alcatraz "scrub out proto tcp set-tos 13"
@ -107,8 +107,8 @@ v4_body()
--sendif ${epair_send}a \
--to 198.51.100.3 \
--recvif ${epair_recv}a \
--send-tos 42 \
--expect-tos 42
--send-tc 42 \
--expect-tc 42
}
v4_cleanup()
@ -147,7 +147,6 @@ v6_body()
# No change is done if not requested
pft_set_rules alcatraz "scrub out proto ipv6-icmp"
atf_check -s exit:1 -o ignore -e ignore ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair}a \
--to 2001:db8:192::2 \
--replyif ${epair}a \
@ -156,7 +155,6 @@ v6_body()
# The requested ToS is set
pft_set_rules alcatraz "scrub out proto ipv6-icmp set-tos 42"
atf_check -s exit:0 -o ignore -e ignore ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair}a \
--to 2001:db8:192::2 \
--replyif ${epair}a \
@ -165,7 +163,6 @@ v6_body()
# ToS is not changed if the scrub rule does not match
pft_set_rules alcatraz "scrub out from 2001:db8:192::3 set-tos 42"
atf_check -s exit:1 -o ignore -e ignore ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair}a \
--to 2001:db8:192::2 \
--replyif ${epair}a \
@ -175,7 +172,6 @@ v6_body()
pft_set_rules alcatraz "scrub out from 2001:db8:192::3 set-tos 13" \
"scrub out proto ipv6-icmp set-tos 14"
atf_check -s exit:0 -o ignore -e ignore ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair}a \
--to 2001:db8:192::2 \
--replyif ${epair}a \
@ -183,7 +179,6 @@ v6_body()
# And this works even if the packet already has ToS values set
atf_check -s exit:0 -o ignore -e ignore ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair}a \
--to 2001:db8:192::2 \
--replyif ${epair}a \
@ -193,7 +188,6 @@ v6_body()
# ToS values are unmolested if the packets do not match a scrub rule
pft_set_rules alcatraz "scrub out from 2001:db8:192::3 set-tos 13"
atf_check -s exit:0 -o ignore -e ignore ${common_dir}/pft_ping.py \
--ip6 \
--sendif ${epair}a \
--to 2001:db8:192::2 \
--replyif ${epair}a \