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#!/bin/bash

# tests for Netfilter bug #965 and the related fix
# (regarding rule management with a given position/handle spec)

set -e

RULESET="flush ruleset
table ip t {
	chain c {
		accept
		accept
	}
}"

EXPECTED="table ip t {
	chain c {
		accept
		drop
		accept
	}
}"

for arg in "position 2" "handle 2" "index 0"; do
	$NFT -f - <<< "$RULESET"
	$NFT add rule t c $arg drop || {
		$NFT list ruleset
		exit 1
	}

	GET="$($NFT list ruleset)"
	if [ "$EXPECTED" != "$GET" ] ; then
		DIFF="$(which diff)"
		[ -x $DIFF ] && $DIFF -u <(echo "$EXPECTED") <(echo "$GET")
		exit 1
	fi
done

for arg in "position 3" "handle 3" "index 1"; do
	$NFT -f - <<< "$RULESET"
	$NFT insert rule t c $arg drop

	GET="$($NFT list ruleset)"
	if [ "$EXPECTED" != "$GET" ] ; then
		DIFF="$(which diff)"
		[ -x $DIFF ] && $DIFF -u <(echo "$EXPECTED") <(echo "$GET")
		exit 1
	fi
done

EXPECTED="table ip t {
	chain c {
		accept
		accept
		drop
	}
}"

for arg in "position 3" "handle 3" "index 1"; do
	$NFT -f - <<< "$RULESET"
	$NFT add rule t c $arg drop

	GET="$($NFT list ruleset)"
	if [ "$EXPECTED" != "$GET" ] ; then
		DIFF="$(which diff)"
		[ -x $DIFF ] && $DIFF -u <(echo "$EXPECTED") <(echo "$GET")
		exit 1
	fi
done

EXPECTED="table ip t {
	chain c {
		drop
		accept
		accept
	}
}"

for arg in "position 2" "handle 2" "index 0"; do
	$NFT -f - <<< "$RULESET"
	$NFT insert rule t c $arg drop

	GET="$($NFT list ruleset)"
	if [ "$EXPECTED" != "$GET" ] ; then
		DIFF="$(which diff)"
		[ -x $DIFF ] && $DIFF -u <(echo "$EXPECTED") <(echo "$GET")
		exit 1
	fi
done