#! /bin/bash

cd "$(dirname "$0")"
. opts.sh


www_checks=(
    "https://ufo.kit.edu/dis/ tomography"
    "http://ufo.kit.edu/ands/repos/openshift37/x86_64 origin"
    "http://www.fossils.kit.edu coptera"
    "http://www.katrin.kit.edu neutrino"
    "http://katrin.kit.edu/data/astor/ wave"
#    "http://user:pass@katrin.kit.edu/adei-hiu/ Advanced"
)


online=$(../scripts/ping.pl "$host")
healthy=$online

# URL checks
for c in "${www_checks[@]}"; do
    url=$(echo $c | awk '{ print $1 }')
    check=$(echo $c | awk '{ $1=""; print $0 }' | sed -e 's/^[[:space:]]\+//')

    ret=$(curl -sSfL "$url" 2>&1)
    if [ $? -ne 0 ]; then
	echo "$url - $ret"
	healthy=0
    elif [ -n "$check" ]; then
	echo $ret | grep -iP "$check" &>/dev/null
	if [ $? -ne 0 ]; then
	    echo "$url - specified keyword is not found"
	    healthy=0
	fi
    fi
done

# Katrin SSH forwaring
ret=$(echo "" | nc -N katrin.kit.edu 22)
if [ $? -ne 0 ]; then
    echo "Error connecting katrin.kit.edu:22"
    healthy=0
else
    echo $ret | grep SSH-2.0-OpenSSH_5.8 > /dev/null
    if [ $? -ne 0 ]; then
	echo "Unexpected SSH server listening on katrin.kit.edu:22. Banner: $ret"
	healthy=0
    fi
fi

# VPN check
ssh darksoft.org ping -W 2 -c 2 192.168.31.1 &> /dev/null
if [ $? -ne 0 ]; then
    echo "Can't verify availability of UFO tunnel"
    [ $healthy -eq 1 ] && healthy=2
fi

ping -W 2 -c 2 192.168.110.67 &> /dev/null
if [ $? -ne 0 ]; then
    echo "Can't verify availability of KATRIN tunnel"
    [ $healthy -eq 1 ] && healthy=2
fi

uptime=$(ssh $host uptime | sed -e 's/^[[:space:]]\+//')
up=$(echo $uptime | cut -d ' ' -f 3- | cut -d ',' -f 1 | sed -re 's/^\s*//')
load=$(echo $uptime | cut -d ' ' -f 3- | cut -d ',' -f 4- | cut -d ':' -f 2 | cut -d ',' -f 3 | sed -re 's/^\s*//')

ret=$(ssh $host rpm -qi redhat-release | grep Version)
if [ $? -eq 0 ]; then
    rel="RHEL $(echo "$ret" | cut -d ':' -f 2 | sed -e 's/^[[:space:]]\+//')"
else
    rel="Unknown"
fi

info=" \${color gray}/ $up, load $load"
echo "$online $healthy $rel $info"