1 # Copyright (C) 2009-2010 OpenWrt.org
3 fw_configure_interface
() {
9 [ "$action" == "add" ] && {
10 local status
=$
(uci_get_state network
"$iface" up
0)
11 [ "$status" == 1 ] ||
[ -n "$aliasnet" ] ||
return 0
14 [ -n "$ifname" ] || ifname
=$
(uci_get_state network
"$iface" ifname
"$iface")
15 [ "$ifname" == "lo" ] && return 0
17 fw_callback pre interface
22 local chain
=zone_
${zone}
27 local mode
=$
(fw_get_family_mode x
$zone i
)
29 case "$mode/$subnet" in
30 # Zone supports v6 only or dual, need v6
32 inet
="{ -s $subnet -d ::/0 }"
33 onet
="{ -s ::/0 -d $subnet }"
37 # Zone supports v4 only or dual, need v4
39 inet
="{ -s $subnet -d 0.0.0.0/0 }"
40 onet
="{ -s 0.0.0.0/0 -d $subnet }"
44 # Need v6 while zone is v4
45 */*:*) fw_log info
"zone $zone does not support IPv6 address family, skipping"; return ;;
47 # Need v4 while zone is v6
48 */*.
*) fw_log info
"zone $zone does not support IPv4 address family, skipping"; return ;;
51 fw
$action $mode f
${chain}_ACCEPT ACCEPT ^
$onet { -o "$ifname" }
52 fw
$action $mode f
${chain}_ACCEPT ACCEPT ^
$inet { -i "$ifname" }
53 fw
$action $mode f
${chain}_DROP DROP ^
$onet { -o "$ifname" }
54 fw
$action $mode f
${chain}_DROP DROP ^
$inet { -i "$ifname" }
55 fw
$action $mode f
${chain}_REJECT reject ^
$onet { -o "$ifname" }
56 fw
$action $mode f
${chain}_REJECT reject ^
$inet { -i "$ifname" }
58 fw
$action $mode n
${chain}_nat MASQUERADE ^
$onet { -o "$ifname" }
59 fw
$action $mode f
${chain}_MSSFIX TCPMSS ^
$onet { -o "$ifname" -p tcp
--tcp-flags SYN
,RST SYN
--clamp-mss-to-pmtu }
61 fw
$action $mode f input
${chain} $
$inet { -i "$ifname" }
62 fw
$action $mode f forward
${chain}_forward $
$inet { -i "$ifname" }
63 fw
$action $mode n PREROUTING
${chain}_prerouting ^
$inet { -i "$ifname" }
64 fw
$action $mode r PREROUTING
${chain}_notrack ^
$inet { -i "$ifname" }
67 local old_zones old_ifname old_subnet
68 config_get old_zones core
"${iface}_zone"
69 [ -n "$old_zones" ] && {
70 config_get old_ifname core
"${iface}_ifname"
71 config_get old_subnet core
"${iface}_subnet"
74 for z
in $old_zones; do
75 fw_log info
"removing $iface ($old_ifname${old_subnet:+ alias $old_subnet}) from zone $z"
76 fw__do_rules del
$z $old_ifname $old_subnet
78 [ -n "$old_subnet" ] || ACTION
=remove ZONE
="$z" INTERFACE
="$iface" DEVICE
="$ifname" /sbin
/hotplug-call firewall
82 config_get old_aliases core
"${iface}_aliases"
85 for a
in $old_aliases; do
86 fw_configure_interface
"$a" del
"$old_ifname"
89 uci_revert_state firewall core
"${iface}_zone"
90 uci_revert_state firewall core
"${iface}_ifname"
91 uci_revert_state firewall core
"${iface}_subnet"
92 uci_revert_state firewall core
"${iface}_aliases"
95 [ "$action" == del
] && return
99 fw_config_get_zone
"$1"
100 list_contains zone_network
"$iface" ||
return
102 fw_log info
"adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name"
103 fw__do_rules add
${zone_name} "$ifname" $aliasnet
104 append new_zones
$zone_name
106 [ -n "$aliasnet" ] || ACTION
=add ZONE
="$zone_name" INTERFACE
="$iface" DEVICE
="$ifname" /sbin
/hotplug-call firewall
108 config_foreach load_zone zone
110 [ -z "$aliasnet" ] && {
112 config_get aliases
"$iface" aliases
115 for a
in $aliases; do
116 local ipaddr netmask ip6addr
117 config_get ipaddr
"$a" ipaddr
118 config_get netmask
"$a" netmask
119 config_get ip6addr
"$a" ip6addr
121 [ -n "$ipaddr" ] && fw_configure_interface
"$a" add
"$ifname" "$ipaddr${netmask:+/$netmask}"
122 [ -n "$ip6addr" ] && fw_configure_interface
"$a" add
"$ifname" "$ip6addr"
125 fw_sysctl_interface
$ifname
126 fw_callback post interface
128 uci_set_state firewall core
"${iface}_aliases" "$aliases"
131 uci_set_state firewall core
"${iface}_zone" "$new_zones"
132 uci_set_state firewall core
"${iface}_ifname" "$ifname"
133 uci_set_state firewall core
"${iface}_subnet" "$aliasnet"
136 fw_sysctl_interface
() {
139 sysctl
-w net.ipv4.conf.
${ifname}.accept_redirects
=$FW_ACCEPT_REDIRECTS
140 sysctl
-w net.ipv6.conf.
${ifname}.accept_redirects
=$FW_ACCEPT_REDIRECTS
141 sysctl
-w net.ipv4.conf.
${ifname}.accept_source_route
=$FW_ACCEPT_SRC_ROUTE
142 sysctl
-w net.ipv6.conf.
${ifname}.accept_source_route
=$FW_ACCEPT_SRC_ROUTE
143 } >/dev
/null
2>/dev
/null