#!/bin/sh
# Start/stop/restart the No-IP Daemon (noip2)

# Written for Slackware Linux by Erik Jan Tromp

NOIP2_BIN=/usr/bin/noip2
NOIP2_CNF=/etc/no-ip2.conf

check_conf() {
  if [ ! -f $NOIP2_BIN ] ; then
    echo "$NOIP2_BIN does not exist. Aborting."
    exit 0
  fi
  if [ ! -f $NOIP2_CNF ] ; then
    echo "$NOIP2_CNF does not exist. Create manually it by issuing:"
    echo "  $NOIP2_BIN -C -c $NOIP2_CNF"
    exit 0
  fi
  NOIP2_UID=$(stat $NOIP2_CNF -c %u)
  if [ $NOIP2_UID -ne $UID ] ; then
    echo "$NOIP2_CNF is owned by UID $NOIP2_UID. Aborting"
    exit 0
  fi
}

noip2_start () {
  MESSAGE=$(noip2_status)
  if [ "$MESSAGE" == "noip2 is stopped." ] ; then
    check_conf
    echo "Starting noip2:  $NOIP2_BIN -c $NOIP2_CNF"
    $NOIP2_BIN -c $NOIP2_CNF
  else
    echo $MESSAGE
  fi
}

noip2_stop () {
  check_conf
  NOIP2_PID=$(pgrep -f "$NOIP2_BIN -c $NOIP2_CNF")
  if [ ! -z $NOIP2_PID ] ; then
    echo "Stopping noip2:  $NOIP2_BIN -c $NOIP2_CNF"
    $NOIP2_BIN -K $NOIP2_PID
  fi
}

noip2_restart () {
  noip2_stop
  noip2_start
}

noip2_status () {
  check_conf
  NOIP2_PID=$(pgrep -f "$NOIP2_BIN -c $NOIP2_CNF")
  if [ ! -z $NOIP2_PID ] ; then
    echo "noip2 is running. PID: $NOIP2_PID"
  else
    echo "noip2 is stopped."
  fi
}

case "$1" in
'start')
  noip2_start
  ;;
'stop')
  noip2_stop
  ;;
'restart')
  noip2_restart
  ;;
'status')
  noip2_status
  ;;
*)
  echo "usage: $0 start|stop|restart|status"
esac