1 # Copyright (C) 2009-2013 OpenWrt.org
7 local val
="$(uci_get_state firewall core $var)"
8 local e1
; for e1
in $item; do
9 local e2
; for e2
in $val; do
10 [ "$e1" = "$e2" ] && e1
=""
12 val
="${val:+$val${e1:+ }}$e1"
15 uci_toggle_state firewall core
$var "$val"
23 local val
="$(uci_get_state firewall core $var)"
24 local e1
; for e1
in $val; do
25 local e2
; for e2
in $item; do
26 [ "$e1" = "$e2" ] && e1
=""
28 rest
="${rest:+$rest${e1:+ }}$e1"
31 uci_toggle_state firewall core
$var "$rest"
34 fw_do_interface_rules
() {
37 local chain
=zone_
${zone}
43 local idev odev inet onet mode
44 fw_get_family_mode mode x
$zone i
46 fw_get_negation idev
'-i' "$ifname"
47 fw_get_negation odev
'-o' "$ifname"
49 case "$mode/$subnet" in
50 # Zone supports v6 only or dual, need v6
52 fw_get_negation inet
'-s' "$subnet"
53 fw_get_negation onet
'-d' "$subnet"
57 # Zone supports v4 only or dual, need v4
59 fw_get_negation inet
'-s' "$subnet"
60 fw_get_negation onet
'-d' "$subnet"
64 # Need v6 while zone is v4
65 */*:*) fw_log info
"zone $zone does not support IPv6 address family, skipping"; return ;;
67 # Need v4 while zone is v6
68 */*.
*) fw_log info
"zone $zone does not support IPv4 address family, skipping"; return ;;
71 *) mode
="${mode#G}" ;;
74 lock
/var
/run
/firewall-interface.lock
76 fw
$action $mode f
${chain}_dest_ACCEPT ACCEPT $
{ $odev $onet $extra_dest }
77 fw
$action $mode f
${chain}_src_ACCEPT ACCEPT $
{ $idev $inet $extra_src }
78 fw
$action $mode f
${chain}_dest_DROP DROP $
{ $odev $onet $extra_dest }
79 fw
$action $mode f
${chain}_src_DROP DROP $
{ $idev $inet $extra_src }
80 fw
$action $mode f
${chain}_dest_REJECT reject $
{ $odev $onet $extra_dest }
81 fw
$action $mode f
${chain}_src_REJECT reject $
{ $idev $inet $extra_src }
83 [ "$(uci_get_state firewall core "${zone}_tcpmss
")" == 1 ] && \
84 fw
$action $mode m
${chain}_MSSFIX TCPMSS $ \
85 { $odev -p tcp
--tcp-flags SYN
,RST SYN
--clamp-mss-to-pmtu $onet $extra_dest }
87 fw
$action $mode f delegate_input
${chain}_input $
{ $idev $inet $extra_src }
88 fw
$action $mode f delegate_forward
${chain}_forward $
{ $idev $inet $extra_src }
89 fw
$action $mode f delegate_output
${chain}_output $
{ $odev $onet $extra_dest }
91 fw
$action $mode n PREROUTING
${chain}_prerouting $
{ $idev $inet $extra_src }
92 fw
$action $mode r PREROUTING
${chain}_notrack $
{ $idev $inet $extra_src }
93 fw
$action $mode n POSTROUTING
${chain}_nat $
{ $odev $onet $extra_dest }
95 # Flush conntrack table
96 echo f
>/proc
/net
/nf_conntrack
2>/dev
/null
98 lock
-u /var
/run
/firewall-interface.lock
101 fw_configure_interface
() {
107 [ "$action" == "add" ] && {
108 local status
=$
(uci_get_state network
"$iface" up
0)
109 [ "$status" == 1 ] ||
[ -n "$aliasnet" ] ||
return 0
112 [ -n "$ifname" ] ||
{
113 ifname
=$
(uci_get_state network
"$iface" ifname
)
114 ifname
="${ifname%%:*}"
115 [ -z "$ifname" ] && return 0
118 [ "$ifname" == "lo" ] && return 0
120 fw_callback pre interface
122 local old_zones old_ifname old_subnets
123 config_get old_zones core
"${iface}_zone"
124 [ -n "$old_zones" ] && {
125 config_get old_ifname core
"${iface}_ifname"
126 config_get old_subnets core
"${iface}_subnets"
129 for z
in $old_zones; do
131 for n
in ${old_subnets:-""}; do
132 fw_log info
"removing $iface ($old_ifname${n:+ alias $n}) from zone $z"
133 fw_do_interface_rules del
$z $old_ifname $n
136 [ -n "$old_subnets" ] ||
{
137 fw__uci_state_del
"${z}_networks" "$iface"
138 env
-i ACTION
=remove ZONE
="$z" INTERFACE
="$iface" DEVICE
="$ifname" /sbin
/hotplug-call firewall
143 config_get old_aliases core
"${iface}_aliases"
146 for a
in $old_aliases; do
147 fw_configure_interface
"$a" del
"$old_ifname"
150 uci_revert_state firewall core
"${iface}_zone"
151 uci_revert_state firewall core
"${iface}_ifname"
152 uci_revert_state firewall core
"${iface}_subnets"
153 uci_revert_state firewall core
"${iface}_aliases"
156 [ "$action" == del
] && return
158 [ -z "$aliasnet" ] && {
160 config_get aliases
"$iface" aliases
163 for a
in $aliases; do
164 local ipaddr netmask ip6addr
165 config_get ipaddr
"$a" ipaddr
166 config_get netmask
"$a" netmask
167 config_get ip6addr
"$a" ip6addr
169 [ -n "$ipaddr" ] && fw_configure_interface
"$a" add
"" "$ipaddr${netmask:+/$netmask}"
170 [ -n "$ip6addr" ] && fw_configure_interface
"$a" add
"" "$ip6addr"
173 fw_sysctl_interface
$ifname
174 fw_callback post interface
176 uci_toggle_state firewall core
"${iface}_aliases" "$aliases"
179 config_get subnets core
"${iface}_subnets"
180 append subnets
"$aliasnet"
182 config_set core
"${iface}_subnets" "$subnets"
183 uci_toggle_state firewall core
"${iface}_subnets" "$subnets"
188 fw_config_get_zone
"$1"
189 list_contains zone_network
"$iface" ||
return
191 fw_log info
"adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name"
192 fw_do_interface_rules add
${zone_name} "$ifname" "$aliasnet"
193 append new_zones
$zone_name
195 [ -n "$aliasnet" ] ||
{
196 fw__uci_state_add
"${zone_name}_networks" "${zone_network}"
197 env
-i ACTION
=add ZONE
="$zone_name" INTERFACE
="$iface" DEVICE
="$ifname" /sbin
/hotplug-call firewall
200 config_foreach load_zone zone
202 uci_toggle_state firewall core
"${iface}_zone" "$new_zones"
203 uci_toggle_state firewall core
"${iface}_ifname" "$ifname"
206 fw_sysctl_interface
() {
209 sysctl
-w net.ipv4.conf.
${ifname}.accept_redirects
=$FW_ACCEPT_REDIRECTS
210 sysctl
-w net.ipv6.conf.
${ifname}.accept_redirects
=$FW_ACCEPT_REDIRECTS
211 sysctl
-w net.ipv4.conf.
${ifname}.accept_source_route
=$FW_ACCEPT_SRC_ROUTE
212 sysctl
-w net.ipv6.conf.
${ifname}.accept_source_route
=$FW_ACCEPT_SRC_ROUTE
213 } >/dev
/null
2>/dev
/null