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#!/bin/bash
# NFT_TEST_REQUIRES(NFT_TEST_HAVE_rbtree_size_limit)
generate_ip() {
local first=($1)
echo -n "$first.$((RANDOM % 256)).$((RANDOM % 256)).$((RANDOM % 256))"
}
ip_to_int() {
local IFS='.'
local ip=($1)
printf '%d' "$((${ip[0]}<<24 | ${ip[1]}<<16 | ${ip[2]}<<8 | ${ip[3]}))"
}
compare_ips() {
local ip1=$(ip_to_int $1)
local ip2=$(ip_to_int $2)
if [ "$ip1" -lt "$ip2" ]; then
echo "$1"
elif [ "$ip1" -gt "$ip2" ]; then
echo "$2"
else
echo "$1"
fi
}
generate_range() {
start=$(generate_ip $1)
end=$(generate_ip $1)
result=$(compare_ips $start $end)
if [[ "$result" != "$start" ]]
then
temp=$start
start=$end
end=$temp
fi
echo -n "$start-$end"
}
generate_prefix() {
prefix=$(generate_ip $1 | cut -d. -f1-3)
echo -n "$prefix.0/24"
}
generate_intervals() {
echo "define x = {"
# not so random, first octet in IP address is $i, this cannot go over 255
iter=$((RANDOM % 255 + 1))
[ $(($RANDOM % 2)) -eq 0 ] && echo "0.0.0.0,"
for ((i=0; i<iter; i++)); do
case $((RANDOM % 3)) in
0) generate_ip $i;;
1) generate_range $i;;
2) generate_prefix $i;;
esac
echo ","
done
[ $(($RANDOM % 2)) -eq 0 ] && echo "255.255.255.255,"
echo "}"
}
run_test() {
local count=($1)
local elems=($2)
local ruleset=($3)
echo "table inet x {
set y {
include \"$elems\"
typeof ip saddr
flags interval
size $count
elements = { \$x }
}
}" > $ruleset
}
count_elems() {
local elems=($2)
count=$(wc -l $elems_file | cut -f1 -d' ')
# subtract enclosing define lines
count=$(($count-2))
echo $count
}
elems_file=$(mktemp /tmp/elems-XXXXX.nft)
ruleset_file=$(mktemp /tmp/ruleset-XXXXX.nft)
if [ ! -w "$elems_file" ] ; then
# cwd might be readonly, mark as skip.
echo "Failed to create tmp file" >&2
exit 77
fi
trap "rm -rf $elems_file $ruleset_file" EXIT
generate_intervals > $elems_file
count=$(count_elems $elems_file)
run_test $count $elems_file $ruleset_file
$NFT -f $ruleset_file || exit 1
$NFT flush ruleset
# subtract 1 to size, too small, it should fail
count=$(($count-1))
run_test $count $elems_file $ruleset_file
$NFT -f $ruleset_file && exit 1
exit 0
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