#!/bin/bash

# Fehlercodes
#RET 0:ok 1:warn 2:crit
#     VPN   LTG   IPs erreichbar RET Str
# 0|0 up    up    alle           0   alles ok
# 1|0 up    down  alle           1   Ltg down, VPN up, alle IPs erreichbar
# 2|0 down  up    alle           0   alles ok
# 3|0 down  down  alle           2   Ltg down, VPN down, alle IPs erreichbar. !!! FEHLER im CHECK !!! Impossible !!!
# 0|x up    up    nicht alle     2   IP xyz down
# 1|x up    down  nicht alle     2   Ltg down, IP ...
# 2|x down  up    nicht alle     2   VPN down, IP ...
# 3|x down  down  nicht alle     2   Ltg down, VPN down, IP ...

COUNT=0
ERR=0

ping -A -c3 -W1 -n 192.168.236.29 > /dev/null 2>&1
if [ "$?" == "1" ]; then 
   ((ERR=$ERR+1))
fi

snmpwalk -ccon -v2c 10.101.0.230 1.3.6.1.4.1.9.9.171.1.2.3.1.7 | grep 217.110.106.133 > /dev/null 2>&1
if [ "$?" == "1" ]; then
   ((ERR=$ERR+2))
fi

ping -A -c3 -W1 -n 10.36.41.10 > /dev/null 2>&1
if [ "$?" == "1" ]; then
   ((COUNT=$COUNT+1));
   IPSTR="IP 10.36.41.10 down! ";
fi

ping -A -c3 -W1 -n 10.36.12.41 > /dev/null 2>&1
if [ "$?" == "1" ]; then
   ((COUNT=$COUNT+2));
   I2="IP 10.36.12.41 down! ";
   IPSTR=$IPSTR$I2;
fi

ping -A -c3 -W1 -n 10.36.1.19 > /dev/null 2>&1 
if [ "$?" == "1" ]; then
   ((COUNT=$COUNT+4));
   I3="IP 10.36.1.19 down! ";
   IPSTR=$IPSTR$I3;
fi

ping -A -c3 -W1 -n 10.36.1.20 > /dev/null 2>&1
if [ "$?" == "1" ]; then
   ((COUNT=$COUNT+8));
   I4="IP 10.36.1.20 down! ";
   IPSTR=$IPSTR$I4;
fi

ping -A -c3 -W1 -n 10.36.1.21 > /dev/null 2>&1 
if [ "$?" == "1" ]; then
   ((COUNT=$COUNT+16));
   I5="IP 10.36.1.21 down! ";
   IPSTR=$IPSTR$I5;
fi

ping -A -c3 -W1 -n 10.36.1.22 > /dev/null 2>&1 
if [ "$?" == "1" ]; then
   ((COUNT=$COUNT+32));
   I6="IP 10.36.1.22 down!";
   IPSTR=$IPSTR$I6;
fi

if [ "$ERR" == "0" ]; then
   if [ "$COUNT" == "0" ]; then
      echo "alles ok";
      exit 0;
   fi
   if [ "$COUNT" != "0" ]; then
      echo "$IPSTR";
      exit 2;
   fi
fi

if [ "$ERR" == "1" ]; then
   if [ "$COUNT" == "0" ]; then
      echo "Ltg down, VPN up, alle IPs erreichbar!"
      exit 1;
   fi
   if [ "$COUNT" != "0" ]; then
      echo "Ltg down, $IPSTR";
      exit 2;
   fi
fi

if [ "$ERR" == "2" ]; then
   if [ "$COUNT" == "0" ]; then
      echo "alles ok"
      exit 0;
   fi
   if [ "$COUNT" != "0" ]; then
      echo "VPN down, $IPSTR";
      exit 2;
   fi
fi

if [ "$ERR" == "3" ]; then
   if [ "$COUNT" == "0" ]; then
      echo "Ltg down, VPN down, alle IPs erreichbar !!! FEHLER im CHECK !!!"
      exit 2;
   fi
   if [ "$COUNT" != "0" ]; then
      echo "Ltg down, VPN down, $IPSTR";
      exit 2;
   fi
fi