#!/bin/sh
# Filename:      grml-setservices
# Purpose:       interface for basic configuration of system startup
# Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
# Bug-Reports:   see http://grml.org/bugs/
# License:       This file is licensed under the GPL v2.
# Latest change: Mit Jul 25 18:34:57 CEST 2007 [mika]
################################################################################

PN="$(basename $0)"
TMP=$(mktemp)
DIALOG=dialog
CONFFILE='/etc/runlevel.conf'

. /etc/grml/script-functions
. /etc/grml/lsb-functions

check4root || exit 100

bailout(){
  rm -f "$TMP"
  exit 0
}

trap bailout 1 2 3 15

is_value_set(){
 [ -n "$1" ] || return 2
 [ -r "$TMP" ] || return 3
 grep -q "$1" $TMP && return 0 || return 1
}

INFO="Which services would you like to have enabled on your system?

Notice: this script will adjust your ${CONFFILE}, the
file which provides the startup configuration for your
system. You can edit the file manually as well.

If you do not know what to choose just take the defaults
or choose cancel.
"

# enable checks only if the according init script is present
[ -r /etc/init.d/lvm2 ]   && LVM='lvm!logical volume management!on'
[ -r /etc/init.d/mdadm ]  && SRAID='mdadm!software-raid via mdadm!on'
[ -r /etc/init.d/dmraid ] && MRAID='dmraid!software-raid via dmraid!off'
[ -r /etc/init.d/dbus -o -r /etc/init.d/dbus-1 ] && DBUS='dbus!hal/dbus (important for KDE e.g.)!off'
[ -r /etc/init.d/hal ]    && HAL='hal!Hardware Abstraction Layer daemon (important for KDE e.g.)!off'
[ -r /etc/init.d/nfs-common ] && NFS='nfs!Network File System (client setup)!off'

## adjust setup
# logic:
# if is_value_set
#    remove_from_runlevel.conf
#    set_up_defaults_as_intented_in_/var/lib/dpkg/info/$PACKAGE.postinst
# else
#    remove_from_runlevel.conf
#    set_up_only_for_stop_to_prevent_reactivation_via_maintainer_scripts_on_upgrade
set_values(){
  if [ -n "$LVM" ] ; then
     if is_value_set "lvm" ; then
        update-rc.d -f lvm2 remove >/dev/null 2>&1
        update-rc.d lvm2 start 26 S . start 50 0 6 .
     else
        update-rc.d -f lvm2 remove >/dev/null 2>&1
        update-rc.d lvm2 stop 20 0 1 6 . >/dev/null 2>&1
     fi
  fi

  if [ -n "$SRAID" ] ; then
     if is_value_set "mdadm"  ; then
        update-rc.d -f mdadm remove >/dev/null 2>&1
        update-rc.d mdadm-raid start 25 S . start 50 0 6 . >/dev/null 2>&1
        update-rc.d mdadm defaults 25 >/dev/null 2>&1
     else
        update-rc.d -f mdadm remove >/dev/null 2>&1
        update-rc.d mdadm stop 20 0 1 6 . >/dev/null 2>&1
        update-rc.d -f mdadm-raid remove >/dev/null 2>&1
        update-rc.d mdadm-raid stop 20 0 1 6 . >/dev/null 2>&1
     fi
  fi

  if [ -n "$MRAID" ] ; then
     if is_value_set "dmraid" ; then
        update-rc.d -f dmraid remove >/dev/null 2>&1
        update-rc.d dmraid start 04 S . start 51 0 6 . >/dev/null
     else
        update-rc.d -f dmraid remove >/dev/null 2>&1
        update-rc.d dmraid stop 20 0 1 6 . >/dev/null 2>&1
     fi
  fi

  if [ -n "$DBUS" ] ; then
     if is_value_set "dbus" ; then
        update-rc.d -f dbus remove >/dev/null 2>&1
        update-rc.d dbus defaults >/dev/null 2>&1
     else
        update-rc.d -f dbus remove >/dev/null 2>&1
        update-rc.d dbus stop 20 0 1 6 . >/dev/null 2>&1
     fi
  fi

  if [ -n "$HAL" ] ; then
     if is_value_set "hal" ; then
        update-rc.d -f hal remove >/dev/null 2>&1
        update-rc.d hal start 24 2 3 4 5. stop 16 0 1 6 . >/dev/null 2>&1
     else
        update-rc.d -f hal remove >/dev/null 2>&1
        update-rc.d hal stop 20 0 1 6 . >/dev/null 2>&1
     fi
  fi

  if [ -n "$NFS" ] ; then
     if is_value_set "nfs" ; then
        update-rc.d -f nfs-common remove >/dev/null 2>&1
        update-rc.d nfs-common start 20 2 3 4 5 . stop 20 0 1 6 . start 44 S . >/dev/null 2>&1
     else
        update-rc.d -f nfs-common remove >/dev/null 2>&1
        update-rc.d nfs-common stop 20 0 1 6 . >/dev/null 2>&1
     fi
  fi
}

# the interface itself
oifs="$IFS"
IFS='!'
$DIALOG --title "$PN" --checklist "$INFO" 30 65 8 $LVM $SRAID $MRAID $DBUS $HAL $NFS 2>$TMP

retval="$?"
case $retval in
    (0)   set_values ;;
    (1)   echo "Cancel pressed." ; exit 1 ;;
    (255) echo "ESC pressed."    ; exit 1 ;;
esac

retval=$?
case $retval in
    (0)
          $DIALOG --title "$PN" --stdout --msgbox "Adjusting system runlevel configuration via $CONFFILE was successful." 0 0
          esyslog user.notice "$PN" "Writing language settings ($LANGUAGE) to $CONFFILE was successful."
          ;;
    *)
          $DIALOG --title "$PN" --stdout --msgbox "Error writing settings to ${CONFFILE}." 0 0
          esyslog user.notice "$PN" "Error writing settings to ${CONFFILE}."
          ;;
esac

rm -f $TMP
IFS="$oifs"

## END OF FILE #################################################################
# vim: ai tw=80 expandtab