#!/bin/sh
#
# autossh	ssh sessions manager
#
# chkconfig:	345 82 18
#
# description:	ssh sessions manager
#
# processname:	autossh
# config:	/etc/sysconfig/autossh
#
# $Id$

# Source function library
. /etc/rc.d/init.d/functions

# Get network config
. /etc/sysconfig/network

# Set defaults
AUTOSSH_PORT=0	   # connection monitoring port. 0 turns the monitoring function off.
AUTOSSH_LOGLEVEL=7

# Get service config - may override defaults
[ -f /etc/sysconfig/autossh ] && . /etc/sysconfig/autossh

export AUTOSSH_LOGLEVEL

# Check that networking is up.
if is_yes "${NETWORKING}"; then
	if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status ]; then
		msg_network_down autossh
		exit 1
	fi
else
	exit 0
fi

start() {
	# Check if the service is already running?
	if [ -f /var/lock/subsys/autossh ]; then
		msg_already_running autossh
		return
	fi

	# Parse autossh.tab file
	# /^[^#$]/ - removes comments, i.e. lines begining with '#' and empty lines.
	for I in $(awk -vFS=';' '/^[^#$]/ {print $1}' /etc/autossh.tab); do
		msg_starting "autossh $I"
		AUTOSSH_PIDFILE=/var/run/autossh/$I.pid $(awk -vFS=';' "-vport=$AUTOSSH_PORT" "/^$I;/ "'{printf("daemon autossh -M%s -fN %s\n", port, $2)}' /etc/autossh.tab)
	done

	# XXX How to detect errors?
	touch /var/lock/subsys/autossh
}

stop() {
	if [ ! -f /var/lock/subsys/autossh ]; then
		msg_not_running autossh
		return
	fi

	# Stop daemons.
	for I in /var/run/autossh/*.pid; do
	  msg_stopping "autossh session $(basename $I)"
	  killproc --pidfile $I autossh -TERM
	done
	rm -f /var/lock/subsys/autossh
}

reload() {
	if [ ! -f /var/lock/subsys/autossh ]; then
		msg_not_running autossh
		RETVAL=7
		return
	fi

	msg_reloading autossh
	for I in /var/run/autossh/*.pid; do
	  killproc --pidfile $I autossh -USR1
	done
	# XXX How to detect errors?
	# RETVAL=$?
	RETVAL=0
}

condrestart() {
	if [ ! -f /var/lock/subsys/autossh ]; then
		msg_not_running autossh
		RETVAL=$1
		return
	fi

	stop
	start
}

RETVAL=0
# See how we were called.
case "$1" in
  start)
  	start
	;;
  stop)
  	stop
	;;
  restart)
	stop
	start
	;;
  try-restart)
	condrestart 0
	;;
  reload|force-reload)
  	reload
	;;
  status)
	status autossh
	RETVAL=$?
	;;
  *)
	msg_usage "$0 {start|stop|restart|try-restart|reload|force-reload|status}"
	exit 3
esac

exit $RETVAL