#!/bin/bash

# Control GNOME remote access from the command line
# By SukkoPera <software@sukkology.net>
# Version 0.1 (22/02/2010)
#
# This script is a sort of text version of vino-preferences, which might be
# useful to setup remote accesso to a GNOME desktop without having physical
# access to the machine (i.e.: No monitor and no mouse).
#
# The supported functions are the following:
# - Enable/Disable the server (automatically disabling the need to manually
#   accept incoming connections).
# - Change the TCP port the server is listening on.
# - Change the password needed to connect to the server.
#
# This script has been tested on GNOME SlackBuild 2.26 running on Slackware
# GNU/Linux version 12.2.
#
# Contains material from the following links:
# http://www.samlesher.com/ubuntu/ubuntu-704-enabledisable-remote-desktop-from-the-command-line
# http://berrange.com/posts/2007/09/05/remotely-setting-up-remote-access-to-a-gnome-session/
#
# Released in the public domain.
#

case "$1" in
	start)
		gconftool-2 -s -t bool /desktop/gnome/remote_access/enabled true
		gconftool-2 -s -t bool /desktop/gnome/remote_access/prompt_enabled false
		echo "Remote Access Enabled"
		;;
	stop)
		gconftool-2 -s -t bool /desktop/gnome/remote_access/enabled false
		echo "Remote Access Disabled"
		;;
	passwd)
		curpwd=$(gconftool-2 --get /desktop/gnome/remote_access/vnc_password)
		curpwd=$(echo $curpwd | base64 -d)
		echo "Current password is: $curpwd"

		echo -n "New Password (Max 8 chars, Enter to quit): "
		stty -echo
		read passwd1
		echo
		if [ -n "$passwd1" ]
		then
			echo -n "Repeat: "
			read passwd2
			echo
			stty echo
			if [ "$passwd1" == "$passwd2" ]
			then
			gconftool-2 --type list --list-type string --set /desktop/gnome/remote_access/authentication_methods '[vnc]'
				passwdb64=$(echo "$passwd1" | base64)
				gconftool-2 --type string --set /desktop/gnome/remote_access/vnc_password $passwdb64
				if [ $? -eq 0 ]
				then
					echo "Password changed."
					exit 0
				else
					echo "There was an error changing your password."
					exit 1
				fi
			else
				echo "The entered passwords do not match. Password unchanged."
			fi
		fi
		stty echo
		;;
	port)
		enabled=$(gconftool-2 --get /desktop/gnome/remote_access/use_alternative_port)
		if [ "$enabled" == "true" ]
		then
			curport=$(gconftool-2 --get /desktop/gnome/remote_access/alternative_port)
		else
			curport=5900
		fi

		echo "The VNC port currently in use is $curport."
		echo -n "Enter the new port to be used (Or Enter to quit): "
		read port
		if [ -n "$port" ]
		then
			if [ $port -eq 5900 ]
			then
				gconftool-2 --type bool --set /desktop/gnome/remote_access/use_alternative_port false
			else
				gconftool-2 --type bool --set /desktop/gnome/remote_access/use_alternative_port true
			fi
			gconftool-2 --type int --set /desktop/gnome/remote_access/alternative_port $port
			echo "Port set to $port"
		fi
		;;
	*)
		echo "Usage $0 start|stop|passwd|port"
		;;
esac