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ede5d4ff5b
Don't drop fragmented packets when reassembly is disabled, they can be matched by rules with "fragment" keyword. Ensure that presence of scrub rules forces old behaviour. Reviewed by: kp Sponsored by: InnoGames GmbH Differential Revision: https://reviews.freebsd.org/D42355
131 lines
3.8 KiB
Bash
131 lines
3.8 KiB
Bash
#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2017 Kristof Provost <kp@FreeBSD.org>
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# Copyright (c) 2023 Kajetan Staszkiewicz <vegeta@tuxpowered.net>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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. $(atf_get_srcdir)/utils.subr
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atf_test_case "match_full_v4" "cleanup"
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match_full_v4_head()
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{
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atf_set descr 'Matching non-fragmented IPv4 packets'
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atf_set require.user root
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atf_set require.progs scapy
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}
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match_full_v4_body()
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{
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setup_router_dummy_ipv4
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# Sanity check.
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ping_dummy_check_request exit:0 --ping-type=icmp
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# Only non-fragmented packets are passed
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jexec router pfctl -e
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pft_set_rules router \
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"pass out" \
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"block in" \
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"pass in inet proto icmp all icmp-type echoreq"
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ping_dummy_check_request exit:0 --ping-type=icmp
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ping_dummy_check_request exit:1 --ping-type=icmp --send-length=2000 --send-frag-length 1000
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}
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match_full_v4_cleanup()
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{
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pft_cleanup
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}
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atf_test_case "match_fragment_v4" "cleanup"
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match_fragment_v4_head()
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{
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atf_set descr 'Matching fragmented IPv4 packets'
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atf_set require.user root
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atf_set require.progs scapy
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}
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match_fragment_v4_body()
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{
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setup_router_dummy_ipv4
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# Sanity check.
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ping_dummy_check_request exit:0 --ping-type=icmp
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# Only fragmented packets are passed
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pft_set_rules router \
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"pass out" \
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"block in" \
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"pass in inet proto icmp fragment"
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ping_dummy_check_request exit:1 --ping-type=icmp
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ping_dummy_check_request exit:0 --ping-type=icmp --send-length=2000 --send-frag-length 1000
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}
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match_fragment_v4_cleanup()
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{
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pft_cleanup
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}
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atf_test_case "compat_override_v4" "cleanup"
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compat_override_v4_head()
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{
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atf_set descr 'Scrub rules override "set reassemble" for IPv4'
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atf_set require.user root
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atf_set require.progs scapy
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}
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compat_override_v4_body()
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{
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setup_router_dummy_ipv4
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# Sanity check.
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ping_dummy_check_request exit:0 --ping-type=icmp
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# The same as match_fragment_v4 but with "set reassemble yes" which
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# is ignored because of presence of scrub rules.
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# Only fragmented packets are passed.
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pft_set_rules router \
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"set reassemble yes" \
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"no scrub" \
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"pass out" \
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"block in" \
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"pass in inet proto icmp fragment"
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ping_dummy_check_request exit:1 --ping-type=icmp
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ping_dummy_check_request exit:0 --ping-type=icmp --send-length=2000 --send-frag-length 1000
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}
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compat_override_v4_cleanup()
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{
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pft_cleanup
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}
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atf_init_test_cases()
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{
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atf_add_test_case "match_full_v4"
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atf_add_test_case "match_fragment_v4"
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atf_add_test_case "compat_override_v4"
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}
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