l2tp

#!/bin/bash
#/usr/lib/check_mk_agent/local

export LANG=de_DE.UTF-8

function confline # get first line from file $1 mathing $2, stripped of # and ; comment lines, stripped spaces and tabs down to spaces, remove trailing ;
{
 echo $(cat $1|grep -v '^$\|^\s*\#'|sed -e "s/[[:space:]]\+/ /g"|sed s/^\ //|sed s/\;//|grep -i "$2"|head -n 1)
}

function conflines # get lines from file $1 mathing $2, stripped of # and ; comment lines, stripped spaces and tabs down to spaces, remove trailing ;
{
 echo "$(cat $1|grep -v '^$\|^\s*\#'|sed -e "s/[[:space:]]\+/ /g"|sed s/^\ //|sed s/\;//|grep -i $2)"
}

## static data
kernel=$(uname -r);
release=$(lsb_release -ds);
latestbootkernel=$(ls -t /boot/vmlinuz-* | sed "s/\/boot\/vmlinuz-//g" | sort -Vr | head -n1)

## apt-check moved to delayed check (600 seconds), needs 2 steps deployment
servicesname="l2tp-services"
interval=600
if [ ! -d "/usr/lib/check_mk_agent/local/$interval" ]; then
  mkdir /usr/lib/check_mk_agent/local/$interval
 fi

if [ ! -f "/usr/lib/check_mk_agent/local/$interval/$servicesname" ]; then
cat <<EOT >> /usr/lib/check_mk_agent/local/$interval/$servicesname
#!/bin/bash
#/usr/lib/check_mk_agent/local
echo DYSFUNCTIONAL delayed localcheck placeholder, please redeploy
EOT
chmod +x /usr/lib/check_mk_agent/local/$interval/$servicesname
fi

## ubuntu-Status
echo "0 Ubuntu-Release Ubuntu-Release=$release; $release - Kernel $kernel; Boot $latestbootkernel"

## logins
logincount=$(who|wc -l)
logout="0 LocalUser CurrentLogins=$logincount.0; CurrentLogins:$logincount"
i=0
TFILE="/tmp/$(basename $0).$$.tmp"
who -u>$TFILE
while read line; do
  i=$(( i + 1))
  line=$(echo $line|sed s/\ +//|tr -s " ")
  user=$(echo $line|cut -d" " -f1)
  tty=$(echo $line|cut -d" " -f2)
  idle=$(echo $line|cut -d" " -f6)
  ip=$(echo $line|cut -d" " -f8)
  logout="$logout\n login-$i-user:$user login-$i-tty:$tty login-$i-idle:$idle login-$i-source:$ip"
 done<$TFILE
rm $TFILE
echo "$logout"

## Batman-Advanced 
bat_version=$(batctl -v 2>/dev/null)
bat_adv_v=$(batctl -v 2>/dev/null|cut -d" " -f4|tr -d "]")
bat_ctl_v=$(batctl -v 2>/dev/null|cut -d" " -f2)
batadvequal=2
if [ "$bat_adv_v" == "$bat_ctl_v" ] ; then
  batadvequal=1
 fi

echo "P Batman-Version kernelvsctl=$batadvequal;0:2;0:2 versions:$bat_version"
#list=$(ls -F /sys/kernel/debug/batman_adv|grep /)
list=$(ip link|grep ",UP,"|cut -d" " -f2|tr -d ":")
if [[ $list != *"bat0"* ]]; then
  list="$list bat0"
 fi
for b in $list; do
  z=$( batctl -m $b o 2>/dev/null | wc -l )
  if [ $z -ge 1 ]; then
    router=$(($(batctl -m $b o 2>/dev/null|grep "^\ \*"|wc -l)-0 ))
    clients=$(batctl -m $b tg 2>/dev/null| grep "^\ \*"|grep -cEo "\[.*W.*\]+")
    owngw=$(batctl -m $b gw 2>/dev/null|cut -d" " -f1|sed s/server/1/|sed s/off/0/)
    gateways=$(($(batctl -m $b gwl 2>/dev/null|grep -A 999 outgoingIf|grep -v outgoingIf|wc -l ) + $owngw))
    claims=$(batctl -m $b cl 2>/dev/null|wc -l )
#    ips=$(( $(batctl -m $b dc 2>/dev/null |wc -l) - 2))
    wlow=$(( $router * 20 / 100 ))
    clow=$(( $router * 5 / 100 ))
    wlimit=$(( $router * 5 ))
    climit=$(( $router * 10 ))
    echo "P Batman-$b Router=$router.0;5:351;1:501|Clients=$clients.0;$wlow.0:$wlimit.0;$clow.0:$climit.0|Claims=$claims.0;0:9999;0:9999|Gateways=$gateways.0;0:3;0:5";
   fi;
 done


#L2TP-Tunneldigger
l_tunnel=$(ip a |grep l2tp|grep tunneldigger -c);
tunneldigger=$(ifconfig|grep tunneldigger -c);

#Output
echo "P L2TP Clients=$l_tunnel.0;1:51;0:81|Tunneldiggerbridges=$tunneldigger.0;0.1:2;0.1:3; L2TP-Clients:$l_tunnel Tunneldiggerbridges:$tunneldigger"