# 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 ifname=$3
+ local aliasnet=$4
[ "$action" == "add" ] && {
local status=$(uci_get_state network "$iface" up 0)
- [ "$status" == 1 ] || return 0
+ [ "$status" == 1 ] || [ -n "$aliasnet" ] || return 0
+ }
+
+ [ -n "$ifname" ] || {
+ ifname=$(uci_get_state network "$iface" ifname)
+ ifname="${ifname%%:*}"
+ [ -z "$ifname" ] && return 0
}
- [ -n "$ifname" ] || ifname=$(uci_get_state network "$iface" ifname "$iface")
[ "$ifname" == "lo" ] && return 0
fw_callback pre interface
fw__do_rules() {
local action=$1
- local chain=$2
+ local zone=$2
+ local chain=zone_${zone}
local ifname=$3
-
- fw $action i f ${chain}_ACCEPT ACCEPT ^ { -o "$ifname" }
- fw $action i f ${chain}_ACCEPT ACCEPT ^ { -i "$ifname" }
- fw $action i f ${chain}_DROP DROP ^ { -o "$ifname" }
- fw $action i f ${chain}_DROP DROP ^ { -i "$ifname" }
- fw $action i f ${chain}_REJECT reject ^ { -o "$ifname" }
- fw $action i f ${chain}_REJECT reject ^ { -i "$ifname" }
-
- fw $action i n ${chain}_nat MASQUERADE ^ { -o "$ifname" }
- fw $action i f ${chain}_MSSFIX TCPMSS ^ { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu }
-
- fw $action i f input ${chain} $ { -i "$ifname" }
- fw $action i f forward ${chain}_forward $ { -i "$ifname" }
- fw $action i n PREROUTING ${chain}_prerouting ^ { -i "$ifname" }
- fw $action i r PREROUTING ${chain}_notrack ^ { -i "$ifname" }
+ local subnet=$4
+
+ local inet onet mode
+ fw_get_family_mode mode x $zone i
+
+ case "$mode/$subnet" in
+ # Zone supports v6 only or dual, need v6
+ G6/*:*|i/*:*)
+ inet="-s $subnet -d ::/0"
+ onet="-s ::/0 -d $subnet"
+ mode=6
+ ;;
+
+ # Zone supports v4 only or dual, need v4
+ G4/*.*.*.*|i/*.*.*.*)
+ inet="-s $subnet -d 0.0.0.0/0"
+ onet="-s 0.0.0.0/0 -d $subnet"
+ mode=4
+ ;;
+
+ # Need v6 while zone is v4
+ */*:*) fw_log info "zone $zone does not support IPv6 address family, skipping"; return ;;
+
+ # 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}_DROP DROP $ { -i "$ifname" $inet }
+ fw $action $mode f ${chain}_REJECT reject $ { -o "$ifname" $onet }
+ fw $action $mode f ${chain}_REJECT reject $ { -i "$ifname" $inet }
+
+ 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" $onet }
+
+ lock -u /var/run/firewall-interface.lock
}
- local old_zones old_ifname
+ local old_zones old_ifname old_subnets
config_get old_zones core "${iface}_zone"
[ -n "$old_zones" ] && {
config_get old_ifname core "${iface}_ifname"
+ config_get old_subnets core "${iface}_subnets"
+
+ local z
for z in $old_zones; do
- fw_log info "removing $iface ($old_ifname) from zone $z"
- fw__do_rules del zone_$z $old_ifname
+ 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 $n
+ done
+
+ [ -n "$old_subnets" ] || {
+ fw__uci_state_del "${z}_networks" "$iface"
+ env -i ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+ }
+ done
+
+ local old_aliases
+ config_get old_aliases core "${iface}_aliases"
- ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+ local a
+ for a in $old_aliases; do
+ fw_configure_interface "$a" del "$old_ifname"
done
+
uci_revert_state firewall core "${iface}_zone"
uci_revert_state firewall core "${iface}_ifname"
+ uci_revert_state firewall core "${iface}_subnets"
+ uci_revert_state firewall core "${iface}_aliases"
}
+
[ "$action" == del ] && return
- local new_zones
+ [ -z "$aliasnet" ] && {
+ local aliases
+ config_get aliases "$iface" aliases
+
+ local a
+ for a in $aliases; do
+ local ipaddr netmask ip6addr
+ config_get ipaddr "$a" ipaddr
+ config_get netmask "$a" netmask
+ config_get ip6addr "$a" ip6addr
+
+ [ -n "$ipaddr" ] && fw_configure_interface "$a" add "" "$ipaddr${netmask:+/$netmask}"
+ [ -n "$ip6addr" ] && fw_configure_interface "$a" add "" "$ip6addr"
+ done
+
+ fw_sysctl_interface $ifname
+ fw_callback post interface
+
+ uci_set_state firewall core "${iface}_aliases" "$aliases"
+ } || {
+ local subnets=
+ config_get subnets core "${iface}_subnets"
+ append subnets "$aliasnet"
+
+ config_set core "${iface}_subnets" "$subnets"
+ uci_set_state firewall core "${iface}_subnets" "$subnets"
+ }
+
+ local new_zones=
load_zone() {
fw_config_get_zone "$1"
list_contains zone_network "$iface" || return
- fw_log info "adding $iface ($ifname) to zone $zone_name"
- fw__do_rules add zone_${zone_name} "$ifname"
+ fw_log info "adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name"
+ fw__do_rules add ${zone_name} "$ifname" "$aliasnet"
append new_zones $zone_name
- ACTION=add ZONE="$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"
-
- fw_sysctl_interface $ifname
-
- fw_callback post interface
}
fw_sysctl_interface() {
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