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selftests: netfilter: xt_string.sh: shellcheck cleanups

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no functional change intended.

Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240418152744.15105-7-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Florian Westphal 2024-04-18 17:27:34 +02:00 committed by Jakub Kicinski
parent 5067fec094
commit c0f9a2b705
1 changed files with 17 additions and 17 deletions
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34
tools/testing/selftests/net/netfilter/xt_string.sh
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@ -37,7 +37,7 @@ hdrlen=$((20 + 8)) # IPv4 + UDP
add_rule() { # (alg, from, to)
ip netns exec "$netns" \
iptables -A OUTPUT -o d0 -m string \
--string "$pattern" --algo $1 --from $2 --to $3
--string "$pattern" --algo "$1" --from "$2" --to "$3"
}
showrules() { # ()
ip netns exec "$netns" iptables -v -S OUTPUT | grep '^-A'
@ -49,10 +49,10 @@ countrule() { # (pattern)
showrules | grep -c -- "$*"
}
send() { # (offset)
( for ((i = 0; i < $1 - $hdrlen; i++)); do
printf " "
( for ((i = 0; i < $1 - hdrlen; i++)); do
echo -n " "
done
printf "$pattern"
echo -n "$pattern"
) > "$infile"
ip netns exec "$netns" socat -t 1 -u STDIN UDP-SENDTO:10.1.2.2:27374 < "$infile"
@ -65,8 +65,8 @@ add_rule kmp 1400 1600
zerorules
send 0
send $((1000 - $patlen))
if [ $(countrule -c 0 0) -ne 4 ]; then
send $((1000 - patlen))
if [ "$(countrule -c 0 0)" -ne 4 ]; then
echo "FAIL: rules match data before --from"
showrules
((rc--))
@ -74,16 +74,16 @@ fi
zerorules
send 1000
send $((1400 - $patlen))
if [ $(countrule -c 2) -ne 2 ]; then
send $((1400 - patlen))
if [ "$(countrule -c 2)" -ne 2 ]; then
echo "FAIL: only two rules should match at low offset"
showrules
((rc--))
fi
zerorules
send $((1500 - $patlen))
if [ $(countrule -c 1) -ne 4 ]; then
send $((1500 - patlen))
if [ "$(countrule -c 1)" -ne 4 ]; then
echo "FAIL: all rules should match at end of packet"
showrules
((rc--))
@ -91,7 +91,7 @@ fi
zerorules
send 1495
if [ $(countrule -c 1) -ne 1 ]; then
if [ "$(countrule -c 1)" -ne 1 ]; then
echo "FAIL: only kmp with proper --to should match pattern spanning fragments"
showrules
((rc--))
@ -99,23 +99,23 @@ fi
zerorules
send 1500
if [ $(countrule -c 1) -ne 2 ]; then
if [ "$(countrule -c 1)" -ne 2 ]; then
echo "FAIL: two rules should match pattern at start of second fragment"
showrules
((rc--))
fi
zerorules
send $((1600 - $patlen))
if [ $(countrule -c 1) -ne 2 ]; then
send $((1600 - patlen))
if [ "$(countrule -c 1)" -ne 2 ]; then
echo "FAIL: two rules should match pattern at end of largest --to"
showrules
((rc--))
fi
zerorules
send $((1600 - $patlen + 1))
if [ $(countrule -c 1) -ne 0 ]; then
send $((1600 - patlen + 1))
if [ "$(countrule -c 1)" -ne 0 ]; then
echo "FAIL: no rules should match pattern extending largest --to"
showrules
((rc--))
@ -123,7 +123,7 @@ fi
zerorules
send 1600
if [ $(countrule -c 1) -ne 0 ]; then
if [ "$(countrule -c 1)" -ne 0 ]; then
echo "FAIL: no rule should match pattern past largest --to"
showrules
((rc--))