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|
#!/bin/bash
set -e
format_offset () {
local i=$1
if ((i == 0))
then
echo ""
elif ((i > 0))
then
echo "+$i"
else
echo "$i"
fi
}
chainname () {
local hook=$1
local prioname=$2
local priooffset=$3
echo "${hook}${prioname}${priooffset}" | tr "\-+" "mp"
}
gen_chains () {
local family=$1
local hook=$2
local prioname=$3
local device=${4:+device $4}
for i in -11 -10 0 10 11
do
local offset=`format_offset $i`
local cmd="add chain $family x"
cmd+=" `chainname $hook $prioname $offset` {"
cmd+=" type filter hook $hook $device"
cmd+=" priority $prioname $offset; }"
echo "$cmd"
done
}
tmpfile=$(mktemp)
trap "rm $tmpfile" EXIT
(
for family in ip ip6 inet
do
echo "add table $family x"
for hook in prerouting input forward output postrouting
do
for prioname in raw mangle filter security
do
gen_chains $family $hook $prioname
done
done
gen_chains $family prerouting dstnat
gen_chains $family postrouting srcnat
done
family=arp
echo "add table $family x"
for hook in input output
do
gen_chains $family $hook filter
done
family=netdev
echo "add table $family x"
gen_chains $family ingress filter lo
family=bridge
echo "add table $family x"
for hook in prerouting input forward output postrouting
do
gen_chains $family $hook filter
done
gen_chains $family prerouting dstnat
gen_chains $family output out
gen_chains $family postrouting srcnat
) >$tmpfile
$NFT -f $tmpfile
|
