#!/bin/sh

getXuser() {
        user=`finger| grep -m1 ":$displaynum " | awk '{print $1}'`
 
        if [ x"$user" = x"" ]; then
                user=`finger| grep -m1 ":$displaynum" | awk '{print $1}'`
        fi
        if [ x"$user" != x"" ]; then
                userhome=`getent passwd $user | cut -d: -f6`
                export XAUTHORITY=$userhome/.Xauthority
        else
                export XAUTHORITY=""
        fi
}

for x in /tmp/.X11-unix/*; do
    displaynum=`echo $x | sed s#/tmp/.X11-unix/X##`
    getXuser
    if [ x"$XAUTHORITY" != x"" ]; then
        # extract current state
   export DISPLAY=":$displaynum"
    fi
done

myresult=`pgrep .lockenabled`
if [ -n "${myresult}" ]; then
	su $user -c "/usr/bin/gnome-screensaver-command --lock"
fi