#!/bin/sh
### BEGIN INIT INFO
# Provides:          dbus
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:
# Short-Description: D-Bus systemwide message bus
# Description:       D-Bus is a simple interprocess messaging system, used
#                    for sending messages between applications.
### END INIT INFO
# -*- coding: utf-8 -*-
# Debian init.d script for D-BUS
# Copyright © 2003 Colin Walters <walters@debian.org>
# Copyright © 2005 Sjoerd Simons <sjoerd@debian.org>

set -e

setvar DAEMON = '/usr/bin/dbus-daemon'
setvar UUIDGEN = '/usr/bin/dbus-uuidgen'
setvar UUIDGEN_OPTS = '--ensure'
setvar NAME = 'dbus'
setvar DAEMONUSER = 'messagebus'
setvar PIDDIR = '/var/run/dbus'
setvar PIDFILE = "$PIDDIR/pid"
setvar DESC = ""system message bus""

test -x $DAEMON || exit 0

source /lib/lsb/init-functions

# Source defaults file; edit that file to configure this script.
setvar PARAMS = """"
if test -e /etc/default/dbus {
  source /etc/default/dbus
}

proc create_machineid {
  # Create machine-id file
  if test -x $UUIDGEN {
    $UUIDGEN $UUIDGEN_OPTS
  }
}

proc start_it_up
{
  if test ! -d $PIDDIR {
    mkdir -p $PIDDIR
    chown $DAEMONUSER $PIDDIR
    chgrp $DAEMONUSER $PIDDIR
  }

  if ! mountpoint -q /proc/  {
    log_failure_msg "Can't start $DESC - /proc is not mounted"
    return
  }

  if test -e $PIDFILE {
    if $0 status > /dev/null  {
      log_success_msg "$DESC already started; not starting."
      return
    } else {
      log_success_msg "Removing stale PID file $PIDFILE."
      rm -f $PIDFILE
    }
  }

  create_machineid

  log_daemon_msg "Starting $DESC" $NAME
  start-stop-daemon --start --quiet --pidfile $PIDFILE \
    --exec $DAEMON -- --system $PARAMS
  log_end_msg $Status
}

proc shut_it_down
{
  log_daemon_msg "Stopping $DESC" $NAME
  start-stop-daemon --stop --retry 5 --quiet --oknodo --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
  log_end_msg $Status
  rm -f $PIDFILE
}

proc reload_it
{
  create_machineid
  log_action_begin_msg "Reloading $DESC config"
  dbus-send --print-reply --system --type=method_call \
            --dest=org.freedesktop.DBus \
            / org.freedesktop.DBus.ReloadConfig > /dev/null
  # hopefully this is enough time for dbus to reload it's config file.
  log_action_end_msg $Status
}

match $1 {
  with start
    start_it_up
  
  with stop
    shut_it_down
  
  with reload|force-reload
    reload_it
  
  with restart
    shut_it_down
    start_it_up
  
  with status
    status_of_proc -p $PIDFILE $DAEMON $NAME && exit 0 || exit $?
    
  with *
    echo "Usage: /etc/init.d/$NAME {start|stop|reload|restart|force-reload|status}" >&2
    exit 2
  
}