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blockcheck: support more nslookup and ping variants

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bol-van 2024-05-13 09:56:31 +03:00
parent 512cf55e30
commit 8ec43269c0
1 changed files with 40 additions and 8 deletions
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46
blockcheck.sh
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@ -1267,7 +1267,7 @@ ask_params()
local IPVS_def=4
# yandex public dns
pingtest 2a02:6b8::feed:0ff && IPVS_def=46
pingtest 6 2a02:6b8::feed:0ff && IPVS_def=46
printf "ip protocol version(s) - 4, 6 or 46 for both (default: $IPVS_def) : "
read IPVS
[ -n "$IPVS" ] || IPVS=$IPVS_def
@ -1349,21 +1349,49 @@ ask_params()
pingtest()
{
# $1 - ip version : 4 or 6
# $2 - domain or ip
# ping command can vary a lot. some implementations have -4/-6 options. others don.t
local PING=ping ret
if [ "$1" = 6 ]; then
if exists ping6; then
PING=ping6
else
PING="ping -6"
fi
else
if [ "$UNAME" = Darwin -o "$UNAME" = FreeBSD -o "$UNAME" = OpenBSD ]; then
# ping by default pings ipv4, ping6 only pings ipv6
# in FreeBSD -4/-6 options are supported, in others not
PING=ping
else
# this can be linux or cygwin
# in linux it's not possible for sure to figure out if it supports -4/-6. only try and check for result code=2 (invalid option)
PING="ping -4"
fi
fi
case "$UNAME" in
OpenBSD)
ping -c 1 -w 1 $1 >/dev/null
$PING -c 1 -w 1 $2 >/dev/null
;;
CYGWIN)
if starts_with "$(which ping)" /cygdrive; then
# cygwin does not have own PING by default. use windows PING.
ping -n 1 -w 1000 $1 >/dev/null
# cygwin does not have own ping by default. use windows PING.
$PING -n 1 -w 1000 $2 >/dev/null
else
# they have installed cygwin ping
ping -c 1 -W 1 $1 >/dev/null
$PING -c 1 -W 1 $2 >/dev/null
fi
;;
*)
ping -c 1 -W 1 $1 >/dev/null
$PING -c 1 -W 1 $2 >/dev/null 2>/dev/null
ret=$?
# can be because of unsupported -4 option
if [ "$ret" = 2 ]; then
ping -c 1 -W 1 $2 >/dev/null
else
return $ret
fi
;;
esac
}
@ -1376,7 +1404,7 @@ find_working_public_dns()
{
local dns
for dns in $DNSCHECK_DNS; do
pingtest $dns && dnstest $dns && {
pingtest 4 $dns && dnstest $dns && {
PUBDNS=$dns
return 0
}
@ -1389,7 +1417,11 @@ lookup4()
# $2 - DNS
case "$LOOKUP" in
nslookup)
if is_linked_to_busybox nslookup; then
nslookup $1 $2 2>/dev/null | sed -e '1,3d' -nre 's/^.*:[^0-9]*(([0-9]{1,3}\.){3}[0-9]{1,3}).*$/\1/p'
else
nslookup $1 $2 2>/dev/null | sed -e '1,3d' -nre 's/^[^0-9]*(([0-9]{1,3}\.){3}[0-9]{1,3}).*$/\1/p'
fi
;;
host)
host -t A $1 $2 | grep "has address" | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}'