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#!/sbin/openrc-run
# Init script for ipset
# Copyright (C) 2012-2017 Kaarle Ritvanen
# Licensed under the terms of the GPL2
description="Manage IP sets in the Linux kernel"
description_save="Save firewall IP sets"
description_reload="Load firewall IP sets"
extra_started_commands="save reload"
IPSET=/usr/sbin/ipset
DIR=/etc/ipset.d
STATUS=0
ipset() {
$IPSET $* || STATUS=1
}
set_files() {
(cd $DIR && ls)
}
set_file() {
grep -v ^# $DIR/$1
}
set_exists() {
$IPSET -n list $1 &> /dev/null
}
set_lists() {
$IPSET save | sed "s/^create \\([^ ]\\+\\) list:set.*/\\1/;ta;d;:a"
}
sets() {
$IPSET -n list
}
depend() {
before iptables ip6tables
}
start() {
reload
}
stop() {
ebegin "Flushing firewall IP sets"
for name in $(set_lists); do
ipset destroy $name
done
for name in $(sets); do
ipset destroy $name
done
eend $STATUS
}
save() {
ebegin "Saving firewall IP sets"
ipset save | while read cmd; do
set -- $cmd
local action=$1
local file=$DIR/$2
shift 2
if [ "$action" = create ]; then
echo $* > $file
elif [ "$action" = add ]; then
echo $* >> $file
fi
done
for name in $(set_files); do
set_exists $name || rm -f $DIR/$name
done
eend $STATUS
}
reload() {
ebegin "Loading firewall IP sets"
local swap=
for name in $(set_files); do
if set_exists $name; then
swap="$swap $name"
fi
done
for name in $(set_files); do
local new=$name
if set_exists $name; then
new=_init_$name
fi
echo create $new $(set_file $name | head -n 1)
done | ipset restore
(
for name in $(set_files); do
local new=$name
set_exists _init_$name && new=_init_$name
set_file $name | sed "1d;s/^/add $new /"
done
for name in $swap; do
echo swap $name _init_$name
done
) | ipset restore
for name in $(set_lists); do
[ -f $DIR/$name ] || echo destroy $name
done | ipset restore
for name in $(sets); do
[ -f $DIR/$name ] || echo destroy $name
done | ipset restore
eend $STATUS
}
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