#!/bin/bash
#
# Init file for Rx3 network setup
#
# chkconfig: 2345 55 25
# description: Rx3 VPN supervisor
#
### BEGIN INIT INFO
# Provides: rx3-vpn
# Required-Start: $network
# Required-Stop: $network
# Default-Start: 2 3 4 5
# Short-Description: Rx3 VPN supervisor
# Description: Rx3 VPN supervisor
### END INIT INFO

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


[ -e /etc/sysconfig/rx3-vpn ] && . /etc/sysconfig/rx3-vpn

RETVAL=0
prog="rx3-vpn"

LOCK_FILE=/var/lock/subsys/rx3-vpn
PID_FILE=/var/run/rx3-vpn.pid
LOG_FILE=/var/log/rx3-vpn.log
STATUS_FILE=/var/log/rx3-vpn.status

unset LC_PAPER LC_ADDRESS LC_MONETARY LC_NUMERIC LC_TELEPHONE LC_MESSAGES LC_IDENTIFICATION LC_COLLATE LANG LC_MEASUREMENT LANGUAGE LC_CTYPE LC_TIME LC_NAME



rx3_vpn_supervisor()
{

    job_id=0

    for blk in ${VPN_EXT_LIST}
    do
      OIFS=${IFS}
      IFS=:
      set $blk
      dev=$1
      conf=$2
      table=$3
      name=$4
      IFS=${OIFS}

      case ${dev}
      in
          "eth"*)
          ;;

	  "tun"*)
	      config_file=/etc/openvpn/ext-client-${dev}.conf
	      template_file=/etc/openvpn/template/ext-client-tunx.conf
	      mng_port=$((2330+$(echo ${dev} | sed -e "s/tun//")))
	      job_pid[${job_id}]="0"
#	      job_cmd[${job_id}]="/usr/sbin/openvpn --config /etc/openvpn/${conf}-client.conf --dev ${dev} --daemon"
	      job_cmd[${job_id}]="/usr/sbin/openvpn --config ${config_file} --dev ${dev} --daemon"

	      /bin/rm -f ${config_file} 2>/dev/null
	      sed -e "s/TARGET-CFG/${conf}-client.conf/" -e "s/VPN-DEVICE/${dev}/" -e "s/MNG-PORT/${mng_port}/" <${template_file} >${config_file}

   	      echo >>${LOG_FILE} $(date) "Loading config: VPN[${job_id}]   Name: [${name}]  Cmd: [${job_cmd[${job_id}]}]"
	      job_id=$((${job_id} + 1))
	  ;;

	  "ppp"*)
	      host=$(grep "Server IP:" /etc/ppp/peers/${conf} | cut -d ' ' -f 4-4)
	      unit=$(echo ${dev} | sed "s/ppp//")

	      job_pid[${job_id}]="0"
	      job_cmd[${job_id}]="/usr/sbin/pptp --debug ${host} call ${conf} unit ${unit}"

	      echo >>${LOG_FILE} $(date) "Loading config: VPN[${job_id}]   Name: [${name}]  Cmd: [${job_cmd[${job_id}]}]"
	      job_id=$((${job_id} + 1))
	  ;;
      esac
    done

    job_nb=${job_id}

    job_id=0

    while [[ 1 ]]
    do
      kill -0 ${job_pid[${job_id}]} 2>/dev/null
      rc=$?

      if [[ ${job_pid[${job_id}]} == 0 ]] || [[ $rc != 0 ]]
      then
	  echo >> ${LOG_FILE} $(date) "Restarting command: [${job_cmd[${job_id}]}]..."

	  eval ${job_cmd[${job_id}]}
	  job_pid[${job_id}]=$( ps aux | grep "${job_cmd[${job_id}]}" | grep -v grep | head -1 | awk '{print $2}')
	  job_date[${job_id}]="$(date)"
  
	  echo >> ${LOG_FILE} $(date) "PId: [${job_pid[${job_id}]}] !"
      fi

      job_id=$((${job_id} + 1))

      if [[ ${job_id} -ge ${job_nb} ]]
      then
	  job_id=0
	  >${STATUS_FILE}

	  while [[ ${job_id} -lt ${job_nb} ]]
          do
	    echo >>${STATUS_FILE} "PId: [${job_pid[${job_id}]}]   Date: [${job_date[${job_id}]}]   Cmd: [${job_cmd[${job_id}]}]"
	    job_id=$((${job_id} + 1))
	  done

	  job_id=0
	  sleep 30
      fi
    done
}



start()
{
        gprintf "Starting %s:" "$prog"
        if [ -r ${LOCK_FILE} ]
        then
            success "already started"
            RETVAL=0
	else
	    rx3_vpn_supervisor &
	    echo "$!" >${PID_FILE}

	    RETVAL=$?
	    [ "$RETVAL" = 0 ] && success "startup" || failure "startup"
	    [ "$RETVAL" = 0 ] && touch ${LOCK_FILE}
	fi
	echo
}



stop()
{
        gprintf "Stopping %s:" "$prog"
        if [ -r ${LOCK_FILE} ]
	then
	    echo >> ${LOG_FILE} $(date) "Killing daemon: [$(cat ${PID_FILE})]..."
            kill -15 $(cat ${PID_FILE})

	    while read stat
	    do
	      echo >> ${LOG_FILE} $(date) "Killing VPN: [$stat] [$(echo "$stat" | sed -e 's/PId: \[//' -e 's/\].*//')]..."
	      kill -15 $(echo "$stat" | sed -e 's/PId: \[//' -e 's/\].*//') 2>/dev/null 2>&1
	    done <${STATUS_FILE}

#            RETVAL=$?
            RETVAL=0
            [ "$RETVAL" = 0 ] && success "stop" || failure "stop"
        else
            success "already stopped"
            RETVAL=0
        fi
        [ "$RETVAL" = 0 ] && rm -f ${LOCK_FILE} && rm -f ${PID_FILE} && rm -f ${STATUS_FILE}
        echo
}



status()
{
    if [ -f ${STATUS_FILE} ]; then
	cat ${STATUS_FILE}
    fi
}



case "$1" in
        start)
                start
                ;;
        stop)
                stop
                ;;
        restart)
                stop
                sleep 1
                start
                ;;
        status)
	        status
                ;;
        *)
                gprintf "Usage: %s {start|stop|restart|status}\n" "$0"
                RETVAL=1
esac
exit $RETVAL