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# Copyright (C) 2009-2010 OpenWrt.org
FW_LIBDIR=${FW_LIBDIR:-/lib/firewall}
. $FW_LIBDIR/fw.sh
include /lib/network
fw_start() {
fw_init
FW_DEFAULTS_APPLIED=
fw_is_loaded && {
echo "firewall already loaded" >&2
exit 1
}
uci_set_state firewall core "" firewall_state
fw_clear DROP
fw_callback pre core
echo "Loading defaults"
fw_config_once fw_load_defaults defaults
echo "Loading zones"
config_foreach fw_load_zone zone
echo "Loading forwardings"
config_foreach fw_load_forwarding forwarding
echo "Loading redirects"
config_foreach fw_load_redirect redirect
echo "Loading rules"
config_foreach fw_load_rule rule
echo "Loading includes"
config_foreach fw_load_include include
[ -z "$FW_NOTRACK_DISABLED" ] && {
echo "Optimizing conntrack"
config_foreach fw_load_notrack_zone zone
}
echo "Loading interfaces"
config_foreach fw_configure_interface interface add
fw_callback post core
uci_set_state firewall core zones "$FW_ZONES"
uci_set_state firewall core loaded 1
}
fw_stop() {
fw_init
fw_callback pre stop
local z n i
config_get z core zones
for z in $z; do
config_get n core "${z}_networks"
for n in $n; do
config_get i core "${n}_ifname"
[ -n "$i" ] && env -i ACTION=remove ZONE="$z" \
INTERFACE="$n" DEVICE="$i" /sbin/hotplug-call firewall
done
config_get i core "${z}_tcpmss"
[ "$i" == 1 ] && {
fw del i m FORWARD zone_${z}_MSSFIX
fw del i m zone_${z}_MSSFIX
}
done
fw_clear ACCEPT
fw_callback post stop
uci_revert_state firewall
config_clear
local h
for h in $FW_HOOKS; do unset $h; done
unset FW_HOOKS
unset FW_INITIALIZED
}
fw_restart() {
fw_stop
fw_start
}
fw_reload() {
fw_restart
}
fw_is_loaded() {
local bool=$(uci_get_state firewall.core.loaded)
return $((! ${bool:-0}))
}
fw_die() {
echo "Error:" "$@" >&2
fw_log error "$@"
fw_stop
exit 1
}
fw_log() {
local level="$1"
[ -n "$2" ] && shift || level=notice
[ "$level" != error ] || echo "Error: $@" >&2
logger -t firewall -p user.$level "$@"
}
fw_init() {
[ -z "$FW_INITIALIZED" ] || return 0
. $FW_LIBDIR/config.sh
scan_interfaces
fw_config_append firewall
local hooks="core stop defaults zone notrack synflood"
local file lib hk pp
for file in $FW_LIBDIR/core_*.sh; do
. $file
hk=$(basename $file .sh)
hk=${hk#core_}
append hooks $hk
done
for file in $FW_LIBDIR/*.sh; do
lib=$(basename $file .sh)
lib=${lib##[0-9][0-9]_}
case $lib in
core*|fw|config|uci_firewall) continue ;;
esac
. $file
for hk in $hooks; do
for pp in pre post; do
type ${lib}_${pp}_${hk}_cb >/dev/null && {
append FW_CB_${pp}_${hk} ${lib}
append FW_HOOKS FW_CB_${pp}_${hk}
}
done
done
done
fw_callback post init
FW_INITIALIZED=1
return 0
}
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