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#!/bin/bash
set -e
tmpfile=$(mktemp)
if [ ! -w $tmpfile ] ; then
echo "Failed to create tmp file" >&2
exit 0
fi
trap "rm -rf $tmpfile" EXIT # cleanup if aborted
RULESET="table ip filter {
map client_to_any {
type ipv4_addr : verdict
elements = { 1.2.3.4 : goto CIn_1 }
}
chain FORWARD {
type filter hook forward priority 0; policy accept;
goto client_to_any
}
chain client_to_any {
ip saddr vmap @client_to_any
}
chain CIn_1 {
}
}"
echo "$RULESET" > $tmpfile
$NFT -f $tmpfile
if [ $? -ne 0 ] ; then
echo "E: unable to load good ruleset" >&2
exit 1
fi
GET="$($NFT list ruleset)"
if [ "$RULESET" != "$GET" ] ; then
DIFF="$(which diff)"
[ -x $DIFF ] && $DIFF -u <(echo "$RULESET") <(echo "$GET")
exit 1
fi
RULESET="delete element ip filter client_to_any { 1.2.3.4 : goto CIn_1 }
delete chain ip filter CIn_1"
echo "$RULESET" > $tmpfile
$NFT -f $tmpfile
if [ $? -ne 0 ] ; then
echo "E: unable to load good ruleset" >&2
exit 1
fi
GET="$($NFT list ruleset)"
EXPECTED="table ip filter {
map client_to_any {
type ipv4_addr : verdict
}
chain FORWARD {
type filter hook forward priority 0; policy accept;
goto client_to_any
}
chain client_to_any {
ip saddr vmap @client_to_any
}
}"
if [ "$EXPECTED" != "$GET" ] ; then
DIFF="$(which diff)"
[ -x $DIFF ] && $DIFF -u <(echo "$EXPECTED") <(echo "$GET")
exit 1
fi
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