#!/bin/sh
# (C) 2007 Michael Meskes <meskes@debian.org>

### BEGIN INIT INFO
# Provides:          vboxguest virtualbox-guest-utils
# Short-Description: VirtualBox Linux Additions
# Required-Start:    $remote_fs
# Required-Stop:     $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
### END INIT INFO

PATH=$PATH:/bin:/sbin:/usr/sbin

. /lib/lsb/init-functions

test -d /usr/share/doc/virtualbox-guest-utils -a -x /usr/sbin/VBoxService || exit 0

in_virtual_machine()
{
	if [ -z "$(lspci -d 80ee:cafe)" ]; then
		log_warning_msg "VirtualBox Additions disabled, not in a Virtual Machine"
		return 1
	fi

	return 0
}

running()
{
    lsmod | grep -q "$1[^_-]"
}

case "$1" in
  start)
	in_virtual_machine || exit 0
	log_begin_msg "Starting VirtualBox Additions"

	if ! running vboxguest; then
		if ! modprobe vboxguest > /dev/null 2>&1; then
			if ! find /lib/modules/`uname -r` -name "vboxguest\.*" 2>/dev/null|grep -q vboxguest; then
				log_failure_msg "No suitable module for running kernel found"
			else
				log_failure_msg "modprobe vboxguest failed. Please use 'dmesg' to find out why"
			fi
			log_end_msg 1
			return 1
		fi
	fi

	if ! running vboxsf; then
		if ! modprobe vboxsf > /dev/null 2>&1; then
			if ! find /lib/modules/`uname -r` -name "vboxsf\.*" 2>/dev/null|grep -q vboxsf; then
				log_failure_msg "No suitable module for running kernel found"
			else
				log_failure_msg "modprobe vboxsf failed. Please use 'dmesg' to find out why"
			fi
			log_end_msg 1
			return 1
		fi
	fi
	if /usr/bin/VBoxClient --check3d 2>/dev/null; then
		setup_gl=true
	else
		unset setup_gl
	fi
	# Disable 3D if Xwayland is found, except on Ubuntu 18.04.
	if type Xwayland >/dev/null 2>&1; then
		unset PRETTY_NAME
		. /etc/os-release 2>/dev/null
		case "${PRETTY_NAME}" in
			"Ubuntu 18.04"*) ;;
			*) unset setup_gl ;;
		esac
	fi
	if test -n "${setup_gl}"; then
		if test -e /usr/lib/virtualbox/additions/00vboxvideo.conf; then
			cp -f /usr/lib/virtualbox/additions/00vboxvideo.conf /etc/ld.so.conf.d/00vboxvideo.conf
			ldconfig
		fi
	fi
	/usr/bin/VBoxClient --vmsvga
	start-stop-daemon --start --quiet --oknodo --exec /usr/sbin/VBoxService
	if [ $? -ne 0 ]; then
		log_end_msg 1
		exit 1
	fi

	log_end_msg 0
	;;

  stop)
	in_virtual_machine || exit 0
	log_begin_msg "Stopping VirtualBox Additions"

	if test -e /etc/ld.so.conf.d/00vboxvideo.conf; then
		rm -f /etc/ld.so.conf.d/00vboxvideo.conf
		ldconfig
	fi

	start-stop-daemon --stop --quiet --oknodo --exec /usr/sbin/VBoxService
	if [ $? -ne 0 ]; then
		log_end_msg 1
		exit 1
	fi

	log_end_msg 0
	;;

  restart|force-reload)
	$0 stop && $0 start
	;;

  status)
	if ! pgrep -x VBoxService > /dev/null; then
		echo "VBoxService daemon isn't running"
		exit 3
	fi

	exit 0
	;;

  *)
	echo "Usage: $0 {start|stop|restart|force-reload|status}"
	exit 1
	;;
esac