#! /bin/sh
# -*- coding: utf-8 -*-
# Debian init.d script for D-BUS
# Copyright © 2003 Colin Walters <walters@debian.org>

set -e

DAEMON=/usr/bin/dbus-daemon
NAME=dbus
DAEMONUSER=messagebus
PIDDIR=/var/run/dbus
PIDFILE=$PIDDIR/pid
DESC="system message bus"
EVENTDIR=/etc/dbus-1/event.d

test -x $DAEMON || exit 0

# Source defaults file; edit that file to configure this script.
ENABLED=1
PARAMS=""
if [ -e /etc/default/dbus ]; then
  . /etc/default/dbus
fi

test "$ENABLED" != "0" || exit 0

start_it_up()
{
  if [ ! -d $PIDDIR ]; then
    mkdir -p $PIDDIR
    chown $DAEMONUSER $PIDDIR
    chgrp $DAEMONUSER $PIDDIR
  fi
  if [ -e $PIDFILE ]; then
    PIDDIR=/proc/$(cat $PIDFILE)
    if [ -d ${PIDDIR} -a  "$(readlink -f ${PIDDIR}/exe)" = "${DAEMON}" ]; then 
      echo "$DESC already started; not starting."
    else
      echo "Removing stale PID file $PIDFILE."
      rm -f $PIDFILE
    fi
  fi
  echo -n "Starting $DESC: "
  start-stop-daemon --start --quiet --pidfile $PIDFILE \
    --user $DAEMONUSER --exec $DAEMON -- --system $PARAMS
  echo "$NAME."
  if [ -d $EVENTDIR ]; then
      run-parts --arg=start $EVENTDIR
  fi
}

shut_it_down()
{
  if [ -d $EVENTDIR ]; then
      run-parts --reverse --arg=stop $EVENTDIR
  fi
  echo -n "Stopping $DESC: "
  start-stop-daemon --stop  --quiet --pidfile $PIDFILE \
    --user $DAEMONUSER
  # We no longer include these arguments so that start-stop-daemon
  # can do its job even given that we may have been upgraded.
  # We rely on the pidfile being sanely managed
  # --exec $DAEMON -- --system $PARAMS
  echo "$NAME."
  rm -f $PIDFILE
}

case "$1" in
  start)
    start_it_up
  ;;
  stop)
    shut_it_down
  ;;
  restart|force-reload)
    shut_it_down
    sleep 1
    start_it_up
  ;;
  *)
    echo "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload}" >&2
    exit 1
  ;;
esac

exit 0