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#!/bin/sh

$XT_MULTI iptables -w -L -n > /dev/null || exit 1
$XT_MULTI iptables -w2 -L -n > /dev/null || exit 1

echo -n '#foo' | $XT_MULTI iptables-restore -w || exit 1

# table probing
for table in security raw mangle nat filter;do
	$XT_MULTI iptables -w2 -t $table -L -n > /dev/null
done

$XT_MULTI iptables -w2 -p icmp --help | grep -q 'Valid ICMP Types' || exit 1

cat <<EOF | $XT_MULTI iptables-restore -w -n
*nat
-F
-X
-Z
-N PREROUTING_direct
-I PREROUTING 1 -j PREROUTING_direct
-N PREROUTING_ZONES_SOURCE
-N PREROUTING_ZONES
-I PREROUTING 2 -j PREROUTING_ZONES_SOURCE
-I PREROUTING 3 -j PREROUTING_ZONES
-N POSTROUTING_direct
-I POSTROUTING 1 -j POSTROUTING_direct
-N POSTROUTING_ZONES_SOURCE
-N POSTROUTING_ZONES
-I POSTROUTING 2 -j POSTROUTING_ZONES_SOURCE
-I POSTROUTING 3 -j POSTROUTING_ZONES
-N OUTPUT_direct
-I OUTPUT 1 -j OUTPUT_direct
COMMIT
*mangle
-F
-X
-Z
-N PREROUTING_direct
-I PREROUTING 1 -j PREROUTING_direct
-N PREROUTING_ZONES_SOURCE
-N PREROUTING_ZONES
-I PREROUTING 2 -j PREROUTING_ZONES_SOURCE
-I PREROUTING 3 -j PREROUTING_ZONES
-N POSTROUTING_direct
-I POSTROUTING 1 -j POSTROUTING_direct
-N INPUT_direct
-I INPUT 1 -j INPUT_direct
-N OUTPUT_direct
-I OUTPUT 1 -j OUTPUT_direct
-N FORWARD_direct
-I FORWARD 1 -j FORWARD_direct
COMMIT
*raw
-F
-X
-Z
-N PREROUTING_direct
-I PREROUTING 1 -j PREROUTING_direct
-N PREROUTING_ZONES_SOURCE
-N PREROUTING_ZONES
-I PREROUTING 2 -j PREROUTING_ZONES_SOURCE
-I PREROUTING 3 -j PREROUTING_ZONES
-N OUTPUT_direct
-I OUTPUT 1 -j OUTPUT_direct
COMMIT
*filter
-F
-X
-Z
-N INPUT_direct
-N INPUT_ZONES_SOURCE
-N INPUT_ZONES
-I INPUT 1 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-I INPUT 2 -i lo -j ACCEPT
-I INPUT 3 -j INPUT_direct
-I INPUT 4 -j INPUT_ZONES_SOURCE
-I INPUT 5 -j INPUT_ZONES
-I INPUT 6 -m conntrack --ctstate INVALID -j DROP
-I INPUT 7 -j REJECT --reject-with icmp-host-prohibited
-N FORWARD_direct
-N FORWARD_IN_ZONES_SOURCE
-N FORWARD_IN_ZONES
-N FORWARD_OUT_ZONES_SOURCE
-N FORWARD_OUT_ZONES
-I FORWARD 1 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-I FORWARD 2 -i lo -j ACCEPT
-I FORWARD 3 -j FORWARD_direct
-I FORWARD 4 -j FORWARD_IN_ZONES_SOURCE
-I FORWARD 5 -j FORWARD_IN_ZONES
-I FORWARD 6 -j FORWARD_OUT_ZONES_SOURCE
-I FORWARD 7 -j FORWARD_OUT_ZONES
-I FORWARD 8 -m conntrack --ctstate INVALID -j DROP
-I FORWARD 9 -j REJECT --reject-with icmp-host-prohibited
-N OUTPUT_direct
-I OUTPUT 1 -j OUTPUT_direct
COMMIT
EOF

if [ $? -ne 0 ]; then
	echo "Error during first iptables-restore"
	exit 1
fi

cat <<EOF | $XT_MULTI iptables-restore -w -n
*raw
-N PRE_public
-N PRE_public_log
-N PRE_public_deny
-N PRE_public_allow
-I PRE_public 1 -j PRE_public_log
-I PRE_public 2 -j PRE_public_deny
-I PRE_public 3 -j PRE_public_allow
-A PREROUTING_ZONES -i + -g PRE_public
COMMIT
*filter
-N IN_public
-N IN_public_log
-N IN_public_deny
-N IN_public_allow
-I IN_public 1 -j IN_public_log
-I IN_public 2 -j IN_public_deny
-I IN_public 3 -j IN_public_allow
-A IN_public_allow -p tcp --dport 22 -m conntrack --ctstate NEW -j ACCEPT
-A IN_public_allow -p udp --dport 5353 -d 224.0.0.251 -m conntrack --ctstate NEW -j ACCEPT
-N FWDI_public
-N FWDI_public_log
-N FWDI_public_deny
-N FWDI_public_allow
-I FWDI_public 1 -j FWDI_public_log
-I FWDI_public 2 -j FWDI_public_deny
-I FWDI_public 3 -j FWDI_public_allow
-I IN_public 4 -p icmp -j ACCEPT
-I FWDI_public 4 -p icmp -j ACCEPT
-A INPUT_ZONES -i + -g IN_public
-A FORWARD_IN_ZONES -i + -g FWDI_public
-N FWDO_public
-N FWDO_public_log
-N FWDO_public_deny
-N FWDO_public_allow
-I FWDO_public 1 -j FWDO_public_log
-I FWDO_public 2 -j FWDO_public_deny
-I FWDO_public 3 -j FWDO_public_allow
-A FORWARD_OUT_ZONES -o + -g FWDO_public
COMMIT
*nat
-N PRE_public
-N PRE_public_log
-N PRE_public_deny
-N PRE_public_allow
-I PRE_public 1 -j PRE_public_log
-I PRE_public 2 -j PRE_public_deny
-I PRE_public 3 -j PRE_public_allow
-A PREROUTING_ZONES -i + -g PRE_public
-N POST_public
-N POST_public_log
-N POST_public_deny
-N POST_public_allow
-I POST_public 1 -j POST_public_log
-I POST_public 2 -j POST_public_deny
-I POST_public 3 -j POST_public_allow
-A POSTROUTING_ZONES -o + -g POST_public
COMMIT
*mangle
-N PRE_public
-N PRE_public_log
-N PRE_public_deny
-N PRE_public_allow
-I PRE_public 1 -j PRE_public_log
-I PRE_public 2 -j PRE_public_deny
-I PRE_public 3 -j PRE_public_allow
-A PREROUTING_ZONES -i + -g PRE_public
COMMIT
EOF

if [ $? -ne 0 ]; then
	echo "Error during 2nd iptables-restore"
	exit 1
fi

cat <<EOF | $XT_MULTI iptables-restore -w -n
*mangle
-P PREROUTING ACCEPT
-P POSTROUTING ACCEPT
-P INPUT ACCEPT
-P OUTPUT ACCEPT
-P FORWARD ACCEPT
COMMIT
*raw
-P PREROUTING ACCEPT
-P OUTPUT ACCEPT
COMMIT
*filter
-P INPUT ACCEPT
-P OUTPUT ACCEPT
-P FORWARD ACCEPT
COMMIT
EOF

if [ $? -ne 0 ]; then
	echo "Error during 3rd iptables-restore"
	exit 1
fi

cat <<EOF | $XT_MULTI iptables-restore -w -n
*filter
-I INPUT_ZONES 1 -i enp3s0 -g IN_public
-I FORWARD_IN_ZONES 1 -i enp3s0 -g FWDI_public
-I FORWARD_OUT_ZONES 1 -o enp3s0 -g FWDO_public
COMMIT
*nat
-I PREROUTING_ZONES 1 -i enp3s0 -g PRE_public
-I POSTROUTING_ZONES 1 -o enp3s0 -g POST_public
COMMIT
*mangle
-I PREROUTING_ZONES 1 -i enp3s0 -g PRE_public
COMMIT
*raw
-I PREROUTING_ZONES 1 -i enp3s0 -g PRE_public
COMMIT
EOF

if [ $? -ne 0 ]; then
	echo "Error during 4th iptables-restore"
	exit 1
fi

tmpfile=$(mktemp) || exit 1
for table in nat mangle raw filter;do
	$XT_MULTI iptables-save -t $table | grep -v '^#' >> "$tmpfile"
done

case "$XT_MULTI" in
*xtables-nft-multi)
	# nft-multi displays chain names in different order, work around this for now
	tmpfile2=$(mktemp)
	sort "$tmpfile" > "$tmpfile2"
	sort $(dirname "$0")/dumps/ipt-save-completed.txt > "$tmpfile"
	diff -u $tmpfile $tmpfile2
	RET=$?
	rm -f "$tmpfile2"
	;;
*)
	diff -u $tmpfile  $(dirname "$0")/dumps/ipt-save-completed.txt
	RET=$?
	;;
esac

rm -f "$tmpfile"

exit $RET