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blockcheck: revert /proc/net/ip_* checking for iptables targets

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bol-van 2022-01-11 00:28:44 +03:00
parent dc9d596247
commit d746805aec
1 changed files with 14 additions and 3 deletions
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17
blockcheck.sh
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@ -117,9 +117,20 @@ IPFW_DEL()
}
ipt6_has_raw()
{
grep -xFq raw /proc/net/ip6_tables_names
ip6tables -nL -t raw >/dev/null 2>/dev/null
}
ipt_has_nfq()
{
# cannot just check /proc/net/ip_tables_targets because of iptables-nft or modules not loaded yet
local ret ipt
for ipt in iptables ip6tables; do
$ipt -A OUTPUT -t mangle -p 255 -j NFQUEUE --queue-num $QNUM --queue-bypass 2>/dev/null
ret=$?
[ $ret = 0 ] || return 1
$ipt -D OUTPUT -t mangle -p 255 -j NFQUEUE --queue-num $QNUM --queue-bypass 2>/dev/null
done
return 0
}
check_system()
{
@ -176,7 +187,7 @@ check_prerequisites()
case "$UNAME" in
Linux)
progs="$progs iptables ip6tables"
! grep -xFq NFQUEUE /proc/net/ip_tables_targets || ! grep -xFq NFQUEUE /proc/net/ip6_tables_targets && {
ipt_has_nfq || {
echo NFQUEUE iptables or ip6tables target is missing. pls install modules.
[ "$SUBSYS" = openwrt ] && echo 'OpenWRT : opkg update ; opkg install iptables-mod-nfqueue'
exitp 6