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Index: sbin/ipfw/ipfw.8
===================================================================
--- sbin/ipfw/ipfw.8
+++ sbin/ipfw/ipfw.8
@@ -1343,7 +1343,7 @@
with multiple addresses) is provided for convenience only and
its use is discouraged.
.It Ar addr : Oo Cm not Oc Bro
-.Cm any | me | me6 |
+.Cm any | me | me4 | me6 |
.Cm table Ns Pq Ar name Ns Op , Ns Ar value
.Ar | addr-list | addr-set
.Brc
@@ -1351,7 +1351,10 @@
.It Cm any
Matches any IP address.
.It Cm me
-Matches any IP address configured on an interface in the system.
+Matches any IPv4 address configured on an interface in the system.
+.It Cm me4
+Alias for
+.Cm me .
.It Cm me6
Matches any IPv6 address configured on an interface in the system.
The address list is evaluated at the time the packet is
Index: sbin/ipfw/ipfw2.c
===================================================================
--- sbin/ipfw/ipfw2.c
+++ sbin/ipfw/ipfw2.c
@@ -3717,11 +3717,10 @@
if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 ||
inet_pton(AF_INET6, host, &a) == 1)
ret = add_srcip6(cmd, av, cblen, tstate);
- /* XXX: should check for IPv4, not !IPv6 */
- if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 ||
- inet_pton(AF_INET6, host, &a) != 1))
+ else if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 ||
+ strcmp(av, "me4") == 0 || inet_pton(AF_INET, host, &a)))
ret = add_srcip(cmd, av, cblen, tstate);
- if (ret == NULL && strcmp(av, "any") != 0)
+ else if (ret == NULL && strcmp(av, "any") != 0)
ret = cmd;
return ret;
@@ -3748,11 +3747,10 @@
if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 ||
inet_pton(AF_INET6, host, &a) == 1)
ret = add_dstip6(cmd, av, cblen, tstate);
- /* XXX: should check for IPv4, not !IPv6 */
- if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 ||
- inet_pton(AF_INET6, host, &a) != 1))
+ else if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 ||
+ strcmp(av, "me4") == 0 || inet_pton(AF_INET, host, &a)))
ret = add_dstip(cmd, av, cblen, tstate);
- if (ret == NULL && strcmp(av, "any") != 0)
+ else if (ret == NULL && strcmp(av, "any") == 0)
ret = cmd;
return ret;
Index: sbin/ipfw/ipv6.c
===================================================================
--- sbin/ipfw/ipv6.c
+++ sbin/ipfw/ipv6.c
@@ -348,6 +348,11 @@
return (1);
}
+ if (strcmp(av, "me4") == 0) { /* Set the data for "me" opt*/
+ cmd->o.len |= F_INSN_SIZE(ipfw_insn);
+ return (1);
+ }
+
if (strcmp(av, "me6") == 0) { /* Set the data for "me" opt*/
cmd->o.len |= F_INSN_SIZE(ipfw_insn);
return (1);
Index: tests/sys/netpfil/common/Makefile
===================================================================
--- tests/sys/netpfil/common/Makefile
+++ tests/sys/netpfil/common/Makefile
@@ -10,7 +10,8 @@
nat \
tos \
fragments \
- forward
+ forward \
+ ipfw_me4
${PACKAGE}FILES+= \
utils.subr \
Index: tests/sys/netpfil/common/ipfw_me4.sh
===================================================================
--- tests/sys/netpfil/common/ipfw_me4.sh
+++ tests/sys/netpfil/common/ipfw_me4.sh
@@ -0,0 +1,202 @@
+#-
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2020 Neel Chauhan
+#
+# 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.
+#
+# $FreeBSD$
+#
+
+. $(atf_get_srcdir)/utils.subr
+. $(atf_get_srcdir)/runner.subr
+
+me4_allow_head()
+{
+ atf_set descr 'IPFW me4 allow identifier test'
+ atf_set require.user root
+}
+
+me4_allow_body()
+{
+ firewall=$1
+ firewall_init $firewall
+ jname_cli="client"
+ jname_srv="server"
+
+ epair=$(vnet_mkepair)
+ vnet_mkjail ${jname_cli} ${epair}a
+ jexec ${jname_cli} ifconfig ${epair}a 192.0.2.1/30 up
+ vnet_mkjail ${jname_srv} ${epair}b
+ jexec ${jname_srv} ifconfig ${epair}b 192.0.2.2/30 up
+
+ firewall_config ${jname_srv} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 allow all from any to any"
+ firewall_config ${jname_cli} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 allow all from any to any"
+ atf_check -s exit:0 -o ignore jexec ${jname_cli} ping -c 1 -t 1 192.0.2.2
+}
+
+me4_allow_cleanup()
+{
+ firewall=$1
+ firewall_cleanup $firewall
+}
+
+me4_deny_head()
+{
+ atf_set descr 'IPFW me4 deny identifier test'
+ atf_set require.user root
+}
+
+me4_deny_body()
+{
+ firewall=$1
+ firewall_init $firewall
+ jname_cli="client"
+ jname_srv="server"
+
+ epair=$(vnet_mkepair)
+ vnet_mkjail ${jname_cli} ${epair}a
+ jexec ${jname_cli} ifconfig ${epair}a 192.0.2.1/30 up
+ vnet_mkjail ${jname_srv} ${epair}b
+ jexec ${jname_srv} ifconfig ${epair}b 192.0.2.2/30 up
+
+ firewall_config ${jname_srv} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 deny all from any to me4"
+ firewall_config ${jname_cli} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 allow all from any to any"
+ atf_check -s exit:2 -o ignore jexec ${jname_cli} ping -c 1 -t 1 192.0.2.2
+
+ firewall_config ${jname_srv} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 deny all from me4 to any"
+ firewall_config ${jname_cli} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 allow all from any to any"
+ atf_check -s exit:2 -o ignore jexec ${jname_cli} ping -c 1 -t 1 192.0.2.2
+}
+
+me4_deny_cleanup()
+{
+ firewall=$1
+ firewall_cleanup $firewall
+}
+
+me4_nonlocal_head()
+{
+ atf_set descr 'IPFW me4 non-local identifier test'
+ atf_set require.user root
+}
+
+me4_nonlocal_body()
+{
+ firewall=$1
+ firewall_init $firewall
+ jname_cli="client"
+ jname_srv="server"
+
+ epair1=$(vnet_mkepair)
+ epair2=$(vnet_mkepair)
+
+ vnet_mkjail ${jname_cli} ${epair1}a
+ jexec ${jname_cli} ifconfig ${epair1}a 192.0.2.1/30 up
+
+ vnet_mkjail ${jname_srv} ${epair1}b ${epair2}b
+ jexec ${jname_srv} ifconfig ${epair1}a 192.0.2.2/30 up
+ jexec ${jname_srv} ifconfig ${epair2}b 198.51.100.1/30 up
+
+ ifconfig ${epair2}a 198.51.100.2/30 up
+
+ jexec ${jname_srv} sysctl net.inet.ip.forwarding=1
+ jexec ${jname_cli} route add -net 198.51.100.0/30 192.0.2.2
+ route add -net 192.0.2.0/30 198.51.100.1
+
+ firewall_config ${jname_srv} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 deny tcp from any to me4 7" \
+ "ipfw -q add 200 allow all from any to any"
+ firewall_config ${jname_cli} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 allow all from any to any"
+
+ atf_check -s exit:2 -o ignore jexec ${jname_cli} ping -c 1 -t 1 198.51.100.2
+}
+
+me4_nonlocal_cleanup()
+{
+ firewall=$1
+ firewall_cleanup $firewall
+}
+
+me4_ipv6_head()
+{
+ atf_set descr 'IPFW me4 identifier ipv6 test'
+ atf_set require.user root
+}
+
+me4_ipv6_body()
+{
+ firewall=$1
+ firewall_init $firewall
+ jname_cli="client"
+ jname_srv="server"
+
+ epair=$(vnet_mkepair)
+ vnet_mkjail ${jname_cli} ${epair}a
+ jexec ${jname_cli} ifconfig ${epair}a 192.0.2.1/30 up
+ jexec ${jname_cli} ifconfig ${epair}a inet6 fd7a:803f:cc4b::1/64 up no_dad
+ vnet_mkjail ${jname_srv} ${epair}b
+ jexec ${jname_srv} ifconfig ${epair}b 192.0.2.2/30 up
+ jexec ${jname_srv} ifconfig ${epair}b inet6 fd7a:803f:cc4b::2/64 up no_dad
+
+ firewall_config ${jname_srv} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 deny all from any to me4" \
+ "ipfw -q add 200 allow all from any to any"
+ firewall_config ${jname_cli} ${firewall} \
+ "ipfw" \
+ "ipfw -q add 100 allow all from any to any"
+
+ atf_check -s exit:0 -o ignore jexec ${jname_cli} ping6 -c 1 -W 1 fd7a:803f:cc4b::2
+}
+
+me4_ipv6_cleanup()
+{
+ firewall=$1
+ firewall_cleanup $firewall
+}
+
+
+setup_tests \
+ me4_allow \
+ ipfw \
+ me4_deny \
+ ipfw \
+ me4_ipv6 \
+ ipfw \
+ me4_nonlocal \
+ ipfw

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