#!/usr/bin/env bash
#
# This script is intended as a simple and quick substitude for proprietary
# desktop sharing programs. It opens a VNC connection in viewonly mode for
# readonly screen sharing over VNC.
#
# Requirements:
#   x11vnc


# Check for x11vnc
which x11vnc 2>/dev/null 1>/dev/null
if [[ $? == 1 ]]; then
  echo "x11vnc is not installed. Please install and run again."
  exit 1
fi

password="${1}"
if [[ -z ${password} ]]; then
  echo -e "\nPlease enter a temporary session password.\n\n"\
          "Note, do not use your user password.\n"\
          "You will need to share this with everyone connecting."
  read password
fi

echo "Starting screenshare"
x11vnc -viewonly -ssl -passwd ${password} -forever -autoport 5900 -quiet