#!/bin/sh
#
#  xfce4
#
#  Copyright (C) 1999, 2003 Olivier Fourdan (fourdan@xfce.org)
#  Copyright (C) 2011       Guido Berhoerster (guido+xfce.org@berhoerster.name)
#  Copyright (C) 2015, 2018 Simon Steinbeiß (simon@xfce.org)
#  Copyright (C) 2011, 2022 Jarno Suni (8@iki.fi)
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

print_help() {
  echo 'Usage: xflock4 [OPTION]'
  echo 'Try to lock the session in various ways, depending on the configured'
  echo 'screensavers. In particular, first try to execute the command set in the Xfconf'
  echo 'property /general/LockCommand of the xfce4-session channel.'
  echo
  echo '  -h, --help    display this help and exit'
}

case $1 in
  -h|--help)
    print_help
    exit 0
    ;;
  ?*)
    print_help >&2
    exit 1
    ;;
esac

# Wait a bit so that user have time to raise finger from a key if
# the script is run in terminal.
[ -t 0 ] && sleep 1

# echo is used to strip blanks
# $(((1<<31)-1)) is MAXINT, which disables timeout: see
# https://dbus.freedesktop.org/doc/api/html/group__DBusPendingCall.html
ret=$(echo $(dbus-send --session \
                       --dest=org.xfce.SessionManager \
                       --print-reply=literal \
                       --reply-timeout=$(((1<<31)-1)) \
                       --type=method_call \
                       /org/xfce/SessionManager \
                       org.xfce.Session.Manager.Lock))
[ "$ret" = 'boolean true' ]
