#!/bin/bash
#
# SSH tunnel manager (bogdan.vasile.harjoc@fokus.fraunhofer.de)
# 
# This creates and monitors tunnel definitions from all the 
# *.tun.sh files from the current dir. Screen and wget are required.

function log { echo `date '+%F %T'` $*; }

function tunnel {
	fname=$1
	. $fname

	TUNNELS=`echo $TUNNELS | sed -e 's/#[^#]*#//g'`

	while true; do
		while true; do
			log "$fname: testing $TESTURL"
			wget --timeout=5 -q -O /dev/null $AUTH "$TESTURL" || break
			sleep 60
		done

		log "$fname: stopping session"
		for p in `ps aux | egrep "SCREEN.*$fname" | grep -v grep | gawk '{print $2}'`
		do
			echo $p; kill $p
		done
		sleep 2

		log "$fname: starting session"
		screen -dmS $fname ssh $CONN $TUNNELS
		sleep 20
	done
}

cd `dirname $0`

JOBLIST=""
for f in *.tun.sh; do
	tunnel $f &
	JOBLIST="$JOBLIST $!"
	sleep 1
done

trap "kill $JOBLIST" INT TERM EXIT
wait