#!/bin/bash
#
# check if a X session is running and active.
# If not, shut down the system
#
# Copyright (C) 2008 Holger Macht <hmacht@suse.de>
#
# This file is released under the GPLv2.
#

EXEC="/sbin/shutdown -h now"

# check if we have pm-profiler and an active profile. If so, $EXEC can be
# overwritten by the active profile's configuration
. /etc/pm-profiler.conf > /dev/null 2>&1
if [ "$?" = "0" ]; then
    . /etc/pm-profiler/$PM_PROFILER_PROFILE/config >/dev/null 2>&1
fi
[ -z "$POWER_BUTTON_HOOK" ] || EXEC="$POWER_BUTTON_HOOK"
    

# iterate over all sessions. If a active X session is found, do nothing
while read A; do
    SESSION=`echo $A | sed 's/\(Session[0-9]*\)://g'`
    [ -z "$SESSION" ] || continue

    SESSION=`echo $A | sed 's/\(Session[0-9]*\):/\1/g'`
    IS_X=`dbus-send --system --print-reply --dest=org.freedesktop.ConsoleKit \
	/org/freedesktop/ConsoleKit/$SESSION \
	org.freedesktop.ConsoleKit.Session.GetX11Display`

    # check if this is a X session, if not, go on
    DISP=`echo $IS_X | sed -e 's/^.* string "\(.*\)"/\1/'`
    [ -n "$DISP" ] || continue

    IS_ACTIVE=`dbus-send --system --print-reply --dest=org.freedesktop.ConsoleKit \
        /org/freedesktop/ConsoleKit/$SESSION \
        org.freedesktop.ConsoleKit.Session.IsActive`
    IS_ACTIVE=`echo $IS_ACTIVE | sed -e 's/^.* boolean \(.*\)$/\1/'`
    
    # debug
    #if [ "$IS_ACTIVE" = "true" ]; then
    #	echo "and is active"
    #else
    #	echo "and is not active"
    #fi

    if [ "$IS_ACTIVE" = "true" -a -n "$DISP" ]; then
	# additional check, if none of these two apps are running, go on
	if [ -n "`pidof kpowersave`" -o -n "`pidof gnome-power-manager`" -o -n "`pidof kded4`" ]; then
	    echo doing nothing...
	    exit 0
	fi
    fi
done < <(ck-list-sessions)   

logger -s -t pm-profiler "Power Button pressed, executing $EXEC"
$EXEC