#!/bin/sh
# $Id$
#
# Distributed under the GPL
#
# watchdog script to restart vdr after failure
# to stop watchdog temporarily touch /tmp/vdr-nowatchdog
#
#

#detach from terminal
exec < /dev/null
exec >/dev/null 2>&1

. /etc/conf.d/vdr.watchdogd
if [ "${DEBUG}" == 1 ]; then
	exec >/tmp/vdrwatchdogd-log 2>&1
	date
	set -x
fi

log() {
	logger -i -t vdrwatchdog -p local0.info	"$@"
}

do_restart() {
	log "restarting VDR"
	/etc/init.d/vdr watchdogrestart
	log "VDR has been restarted"
	/usr/bin/svdrpsend.pl mesg "Warning: vdr was restarted by watchdog." &
}

is_paused() {
	[ -f /tmp/vdr-nowatchdog ]
}

VDR=/usr/bin/vdr

log "Starting vdrwatchdog"
while true; do
	pid=$(pidof -s ${VDR})
	if [ -n "${pid}" ]; then
		/usr/bin/wait_on_pid "${pid}"
	fi

	while is_paused; do
		sleep 10
	done
	
	if ! pidof ${VDR} >/dev/null; then
		do_restart
	fi
done
log "Exiting vdrwatchdog"