#!/bin/ksh
#
# "@(#)kdm.rc.src 1.4 94/08/11
#
# This version of the kdm.rc script can be used on the UnixWare(TM) 
# operating system to initiate tasks such as starting the kdm 
# process. 
#
#  (c) Copyright 1997  The Santa Cruz Operation, Inc.
#  (c) Copyright 1993, 1994 Hewlett-Packard Company
#  (c) Copyright 1993, 1994 International Business Machines Corp.
#  (c) Copyright 1993, 1994 Sun Microsystems, Inc.
#  (c) Copyright 1993, 1994 Unix System Labs, Inc., a subsidiary of
#      Novell, Inc.
#
# When placed in the /etc/rc2.d directory and named appropriately, such as 
# "S99kdm", this script will automatically start the kdm window 
# after the UnixWare(TM) system boots to its multi-user level.
#

RCSCRIPT=/etc/rc2.d/S99kdm

mode=$1

usage_error() {
      echo "  $0 start             	(start kdm process)"
      echo "  $0 stop              	(stop kdm process)"
      echo "  $0 reset             	(reset kdm process)"

      echo " "
}

if [ ! -d /usr/bin ]
then			# /usr not mounted
	exit 1
fi


set `LANG=C LC_ALL=C /usr/bin/id`


if [ $1 != "uid=0(root)" ]; then
        echo "$0: must be run as root"
        exit 1
fi

grep=/usr/bin/grep
ps=/usr/bin/ps
cut=/usr/bin/cut
awk=/usr/bin/awk

#
# Find login server pid from the process tree
#
login_server_pid()
{

# In following grep for "kdm" processes, explictly exclude any matches 
# on this shell file named "kdm.rc"

  $ps -u 0 -l | $grep -v kdm. | $grep kdm | $cut -c1-24 | $awk '{print $4 " " $5}' |
  while read pid ppid; do
    parent_login_ps=`$ps -p $ppid | $grep kdm`
    if [ -z "$parent_login_ps" ]; then
      echo "$pid"
      break
    fi
  done
}

# The X server is refusing to die when kdm goes away
# so we will explicitly do a kill on it.
xserver_pid()
{

  $ps -u 0 -l | $grep Xsco | $cut -c1-24 | $awk '{print $4 " " $5}' |
  while read pid ppid; do
    if [ "$ppid" = "$1" ]; then
      echo "$pid"
      break
    fi
  done
}

case "$mode" in

'start')

	if [ -x /usr/local/kde/bin/kdm ] ; then
		/usr/local/kde/bin/kdm -daemon
	fi
	;;


'stop') 	
#       get kdm pid

        kdm_pid=`login_server_pid`
        x_pid=`xserver_pid $kdm_pid`

#       kill kdm process

        if [ "$kdm_pid" != "" ] ; then
             /usr/bin/kill $kdm_pid

             if [ "$x_pid" != "" ] ; then
		/usr/bin/kill $x_pid

# need to send 2 kill signals to Xserver
		/usr/bin/kill $x_pid


	     fi

#           reset keyboard back to ascii mode

            if [ -x /usr/openwin/bin/kbd_mode ] ; then
                 /usr/openwin/bin/kbd_mode -a
            fi
        fi
	;;

'reset') 	
#       get kdm pid

        kdm_pid=`login_server_pid`

#       reset kdm process


        if [ "$kdm_pid" != "" ] 
        then
             /usr/bin/kill -HUP $kdm_pid
        fi
	;;

enable)
        if [ -h $RCSCRIPT ] ; then
                echo "KDM is already enabled."
        else
                echo "Enabling KDM ... \c"
		rm -f $RCSCRIPT
                ln -s /etc/kdm $RCSCRIPT
                echo "done."
        fi
	exit 0
        ;;

disable)
        echo "Disabling KDM ... \c"
        rm -f $RCSCRIPT
        echo "done."
	exit 0
        ;;

*)
	usage_error
	exit 1
	;;
esac

exit 0