# Copyright (C) 2009-2010 OpenWrt.org
+fw__uci_state_add() {
+ local var="$1"
+ local item="$2"
+
+ local val=" $(uci_get_state firewall core $var) "
+ val="${val// $item / }"
+ val="${val# }"
+ val="${val% }"
+ uci_revert_state firewall core $var
+ uci_set_state firewall core $var "${val:+$val }$item"
+}
+
+fw__uci_state_del() {
+ local var="$1"
+ local item="$2"
+
+ local val=" $(uci_get_state firewall core $var) "
+ val="${val// $item / }"
+ val="${val# }"
+ val="${val% }"
+ uci_revert_state firewall core $var
+ uci_set_state firewall core $var "$val"
+}
+
fw_configure_interface() {
local iface=$1
local action=$2
local chain=zone_${zone}
local ifname=$3
local subnet=$4
- local masq_src=$5
- local masq_dest=$6
- local inet onet
- local mode=$(fw_get_family_mode x $zone i)
+ local inet onet mode
+ fw_get_family_mode mode x $zone i
case "$mode/$subnet" in
# Zone supports v6 only or dual, need v6
# Need v4 while zone is v6
*/*.*) fw_log info "zone $zone does not support IPv4 address family, skipping"; return ;;
+
+ # Strip prefix
+ *) mode="${mode#G}" ;;
esac
+ lock /var/run/firewall-interface.lock
+
fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -o "$ifname" $onet }
fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -i "$ifname" $inet }
fw $action $mode f ${chain}_DROP DROP $ { -o "$ifname" $onet }
fw $action $mode f ${chain}_REJECT reject $ { -o "$ifname" $onet }
fw $action $mode f ${chain}_REJECT reject $ { -i "$ifname" $inet }
- # NB: if MASQUERADING for IPv6 becomes available we'll need a family check here
- local msrc mdst
- for msrc in ${masq_src:-0.0.0.0/0}; do
- [ "${msrc#!}" != "$msrc" ] && msrc="! -s ${msrc#!}" || msrc="-s $msrc"
- for mdst in ${subnet:-${masq_dest:-0.0.0.0/0}}; do
- [ "${mdst#!}" != "$mdst" ] && mdst="! -d ${mdst#!}" || mdst="-d $mdst"
- fw $action $mode n ${chain}_nat MASQUERADE $ { -o "$ifname" $msrc $mdst }
- done
- done
-
fw $action $mode f ${chain}_MSSFIX TCPMSS $ { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu $onet }
fw $action $mode f input ${chain} $ { -i "$ifname" $inet }
fw $action $mode f forward ${chain}_forward $ { -i "$ifname" $inet }
fw $action $mode n PREROUTING ${chain}_prerouting $ { -i "$ifname" $inet }
fw $action $mode r PREROUTING ${chain}_notrack $ { -i "$ifname" $inet }
+ fw $action $mode n POSTROUTING ${chain}_nat $ { -o "$ifname" $onet }
+
+ lock -u /var/run/firewall-interface.lock
}
- local old_zones old_ifname old_subnets old_masq_src old_masq_dest
+ local old_zones old_ifname old_subnets
config_get old_zones core "${iface}_zone"
[ -n "$old_zones" ] && {
config_get old_ifname core "${iface}_ifname"
config_get old_subnets core "${iface}_subnets"
- config_get old_masq_src core "${iface}_masq_src"
- config_get old_masq_dest core "${iface}_masq_dest"
local z
for z in $old_zones; do
local n
for n in ${old_subnets:-""}; do
fw_log info "removing $iface ($old_ifname${n:+ alias $n}) from zone $z"
- fw__do_rules del $z $old_ifname $n "$old_masq_src" "$old_masq_dest"
+ fw__do_rules del $z $old_ifname $n
done
- [ -n "$old_subnets" ] || ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+ [ -n "$old_subnets" ] || {
+ fw__uci_state_del "${z}_networks" "$iface"
+ env -i ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+ }
done
local old_aliases
uci_revert_state firewall core "${iface}_ifname"
uci_revert_state firewall core "${iface}_subnets"
uci_revert_state firewall core "${iface}_aliases"
- uci_revert_state firewall core "${iface}_masq_src"
- uci_revert_state firewall core "${iface}_masq_dest"
}
[ "$action" == del ] && return
}
local new_zones=
- local new_masq_src=
- local new_masq_dest=
load_zone() {
fw_config_get_zone "$1"
list_contains zone_network "$iface" || return
fw_log info "adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name"
- fw__do_rules add ${zone_name} "$ifname" "$aliasnet" "$zone_masq_src" "$zone_masq_dest"
+ fw__do_rules add ${zone_name} "$ifname" "$aliasnet"
append new_zones $zone_name
- append new_masq_src "$zone_masq_src"
- append new_masq_dest "$zone_masq_dest"
- [ -n "$aliasnet" ] || ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+ [ -n "$aliasnet" ] || {
+ fw__uci_state_add "${zone_name}_networks" "${zone_network}"
+ env -i ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+ }
}
config_foreach load_zone zone
uci_set_state firewall core "${iface}_zone" "$new_zones"
uci_set_state firewall core "${iface}_ifname" "$ifname"
- uci_set_state firewall core "${iface}_masq_src" "$new_masq_src"
- uci_set_state firewall core "${iface}_masq_dest" "$new_masq_dest"
}
fw_sysctl_interface() {
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