Date: Fri, 29 May 2026 08:02:44 +0000 From: Andrey V. Elsukov <ae@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Cc: Vyacheslav Terehov <terehovv@mail.ru> Subject: git: 33cafd3fadd0 - stable/15 - ipfw: fix parsing error in nat config port_range Message-ID: <6a194824.222c1.adb86ef@gitrepo.freebsd.org>
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The branch stable/15 has been updated by ae: URL: https://cgit.FreeBSD.org/src/commit/?id=33cafd3fadd07ea49b18559a4fe397951c6a844f commit 33cafd3fadd07ea49b18559a4fe397951c6a844f Author: Vyacheslav Terehov <terehovv@mail.ru> AuthorDate: 2026-05-21 07:15:22 +0000 Commit: Andrey V. Elsukov <ae@FreeBSD.org> CommitDate: 2026-05-29 08:01:00 +0000 ipfw: fix parsing error in nat config port_range Also fix the corresponding tests. PR: 263240 Differential Revision: https://reviews.freebsd.org/D57010 (cherry picked from commit 6eba055fcf5b0bbfbebcac59f5982d13815001b0) --- sbin/ipfw/ipfw.8 | 3 ++- sbin/ipfw/nat.c | 29 ++++++++++++++++------------- tests/sys/netpfil/common/nat.sh | 26 ++++++++++++++------------ 3 files changed, 32 insertions(+), 26 deletions(-) diff --git a/sbin/ipfw/ipfw.8 b/sbin/ipfw/ipfw.8 index b72341c685e7..2d683286ed4e 100644 --- a/sbin/ipfw/ipfw.8 +++ b/sbin/ipfw/ipfw.8 @@ -1,5 +1,5 @@ .\" -.Dd March 1, 2026 +.Dd May 21, 2026 .Dt IPFW 8 .Os .Sh NAME @@ -3521,6 +3521,7 @@ Obey transparent proxy rules only, packet aliasing is not performed. Skip instance in case of global state lookup (see below). .It Cm port_range Ar lower-upper Set the aliasing ports between the ranges given. +Ports must be in the range 1024-65535. Upper port has to be greater than lower. .It Cm udp_eim When enabled, UDP packets use endpoint-independent mapping (EIM) from RFC 4787 diff --git a/sbin/ipfw/nat.c b/sbin/ipfw/nat.c index db74abaab233..a5691200943c 100644 --- a/sbin/ipfw/nat.c +++ b/sbin/ipfw/nat.c @@ -757,25 +757,28 @@ nat_show_cfg(struct nat44_cfg_nat *n, void *arg __unused) } static int -nat_port_alias_parse(char *str, u_short *lpout, u_short *hpout) { +nat_port_alias_parse(char *str, u_short *lpout, u_short *hpout) +{ long lp, hp; - char *ptr; + char *ptr, *substr; + + substr = strsep(&str, "-"); + if (substr == NULL || str == NULL) + return (0); + /* Lower port parsing */ - lp = (long) strtol(str, &ptr, 10); - if (lp < 1024 || lp > 65535) - return 0; - if (!ptr || *ptr != '-') - return 0; + lp = (long) strtol(substr, &ptr, 0); + if (*ptr != '\0' || lp < 1024 || lp > 65535) + return (0); + /* Upper port parsing */ - hp = (long) strtol(ptr, &ptr, 10); - if (hp < 1024 || hp > 65535) - return 0; - if (ptr) - return 0; + hp = (long) strtol(str, &ptr, 0); + if (*ptr != '\0' || hp < 1024 || hp > 65535) + return (0); *lpout = (u_short) lp; *hpout = (u_short) hp; - return 1; + return (1); } void diff --git a/tests/sys/netpfil/common/nat.sh b/tests/sys/netpfil/common/nat.sh index 023b0742ec6b..2b828dc03fdc 100644 --- a/tests/sys/netpfil/common/nat.sh +++ b/tests/sys/netpfil/common/nat.sh @@ -26,6 +26,8 @@ # # +set -e + . $(atf_get_srcdir)/utils.subr . $(atf_get_srcdir)/runner.subr @@ -178,13 +180,13 @@ common_cgn() { atf_check -s exit:2 -o ignore jexec client1 ping -t 1 -c 1 198.51.100.2 atf_check -s exit:2 -o ignore jexec client2 ping -t 1 -c 1 198.51.100.2 - if [[ $portalias ]]; then + if [ ${portalias} = "true" ]; then firewall_config nat $firewall \ "ipfw" \ - "ipfw -q nat 123 config if ${epair_host_nat}b unreg_cgn port_alias 2000-2999" \ - "ipfw -q nat 456 config if ${epair_host_nat}b unreg_cgn port_alias 3000-3999" \ - "ipfw -q add 1000 nat 123 all from any to 198.51.100.2 2000-2999 in via ${epair_host_nat}b" \ - "ipfw -q add 2000 nat 456 all from any to 198.51.100.2 3000-3999 in via ${epair_host_nat}b" \ + "ipfw -q nat 123 config if ${epair_host_nat}b unreg_cgn port_range 2000-2999" \ + "ipfw -q nat 456 config if ${epair_host_nat}b unreg_cgn port_range 3000-3999" \ + "ipfw -q add 1000 nat 123 all from any to 198.51.100.0/24 2000-2999 in via ${epair_host_nat}b" \ + "ipfw -q add 2000 nat 456 all from any to 198.51.100.0/24 3000-3999 in via ${epair_host_nat}b" \ "ipfw -q add 3000 nat 123 all from 100.64.0.2 to any out via ${epair_host_nat}b" \ "ipfw -q add 4000 nat 456 all from 100.64.1.2 to any out via ${epair_host_nat}b" else @@ -194,16 +196,16 @@ common_cgn() { "ipfw -q add 1000 nat 123 all from any to any" fi - # ping is successful now - atf_check -s exit:0 -o ignore jexec client1 ping -t 1 -c 1 198.51.100.2 - atf_check -s exit:0 -o ignore jexec client2 ping -t 1 -c 1 198.51.100.2 - # if portalias, test a tcp server/client with nc - if [[ $portalias ]]; then + if [ ${portalias} = "true" ]; then for inst in 1 2; do - daemon nc -p 198.51.100.2 7 - atf_check -s exit:0 -o ignore jexec client$inst sh -c "echo | nc -N 198.51.100.2 7" + daemon nc -l 198.51.100.2 7 + atf_check -s exit:0 -o ignore -e ignore jexec client$inst nc -z 198.51.100.2 7 done + else + # ping is successful now + atf_check -s exit:0 -o ignore jexec client1 ping -t 1 -c 1 198.51.100.2 + atf_check -s exit:0 -o ignore jexec client2 ping -t 1 -c 1 198.51.100.2 fi }home | help
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