#!/bin/bash
# Initial/Upgrade VirtualBox
#
if [ "$UID" -ne 0 ]
  then echo "This script should be run as root."
  exit 1
fi
#
# Source config file
if [ ! -f ~/.vbconfig ]; then
    echo "Config File ~/.vbconfig not found!"
    echo "Either you have not done a sudo from the VB user or not run set-folders"
    echo "Run: set-folders to create .vbconfig"
    exit 1
fi
. ~/.vbconfig
#
echo "Edit file to update for correct/recent:"
echo "  (1) Version and Distribution"
echo "  (2) Extension pack URL"
echo "  (3) Guest Additions URL - to be installed on Guest"
echo "  (4) User id for Virtual Machines"
echo "Shell Variables are: VB_VERSION, (DEB_DIST), EXT_PACK_URL, GUEST_ADD_URL, VB_USER_ID"
echo
read -p "Press [Enter] key to start or Ctrl-C to break and update script ..."
#
# VB Version to be installed (using aptitude)
VB_VERSION="virtualbox-4.3"
#
# Check if VirtualBox is already installed
VB_INSCHK=`aptitude search $VB_VERSION | grep -c "i...${VB_VERSION}"`
if [ $VB_INSCHK -gt 0 ]; then
  echo "VirtualBox install detected.  VirtualBox will be upgraded."
  echo "Please shutdown all VMs before proceeding."
  read -p "Press [Enter] key to continue or Ctrl-C to break to shutdown VMs first ..."
fi
#
# Debian-based Linux distributions
# Trusty example below - CHANGE if required
DEB_DIST="deb http://download.virtualbox.org/virtualbox/debian trusty contrib"
#
# Version 4.3.20 example below - CHANGE
# The new version # will depend on version for base install (above)
EXT_PACK_URL="http://download.virtualbox.org/virtualbox/4.3.20/Oracle_VM_VirtualBox_Extension_Pack-4.3.20.vbox-extpack"
EXT_PACK_FILE=$(basename $EXT_PACK_URL)
#
# GuestAdditions
# Update URL for latest version 
# URL to follow version # of base and extension pack - CHANGE
GUEST_ADD_URL="http://download.virtualbox.org/virtualbox/4.3.20/VBoxGuestAdditions_4.3.20.iso"
GUEST_ADD_FILE=$(basename $GUEST_ADD_URL)
#
# Define the Designated VB User
read -e -p "Enter VM User : " -i "$SUDO_USER" VB_USER_ID
#
echo "Check settings ...
"
echo "VirtualBox Version : $VB_VERSION"
echo "Debian Distribution: $DEB_DIST"
echo "Extension pack URL : $EXT_PACK_URL"
echo "Guest Addition URL : $GUEST_ADD_URL"
echo "VirtualBox User Id : $VB_USER_ID
"
read -p "Press [Enter] key to continue or Ctrl-C to break and update variables ..."
#
echo
echo "Including Debian-based Linux distributions in apt sources"
read -p "Press [Enter] key to continue or Ctrl-C to break ..."
# Include Debian-based Linux distributions
CHK_DEBAPT=`grep -c "$DEB_DIST" /etc/apt/sources.list`
if [ "$CHK_DEBAPT" -eq 0 ]
  then echo $DEB_DIST >> /etc/apt/sources.list
else
  echo "Debian-based Linux distributions already included. Proceeding ..."
fi
#
echo
echo "Including Oracle public key for apt-secure"
read -p "Press [Enter] key to continue or Ctrl-C to break ..."
# Oracle public key for apt-secure
# Ok to run again even if already completed
wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc \
  -O- | sudo apt-key add -
#
echo
echo "Updating apt, OS and installing dkms"
read -p "Press [Enter] key to continue or Ctrl-C to break ..."
aptitude update
#aptitude upgrade
#aptitude dist-upgrade # May be required sometimes
aptitude -y install dkms
#
echo
echo "Downloading extension pack"
read -p "Press [Enter] key to continue or Ctrl-C to break ..."
# Download extension pack to the DVD folder
if [ -f $VB_DVD_LOC/$EXT_PACK_FILE ]; then
    echo "Download already exists.  Skipping ..."
else
    cd $VB_DVD_LOC
    wget "$EXT_PACK_URL"
fi
#
echo
echo "Downloading Guest Additions"
read -p "Press [Enter] key to continue or Ctrl-C to break ..."
# Download Guest Additions to the DVD folder
if [ -f $VB_DVD_LOC/$GUEST_ADD_FILE ]; then
    echo "Download already exists.  Skipping ..."
else
    cd $VB_DVD_LOC
    wget "$GUEST_ADD_URL"
fi
#
echo
echo "Installing VirtualBox using aptitude"
echo "Follow the aptitude prompts to complete install"
read -p "Press [Enter] key to continue or Ctrl-C to break ..."
#
aptitude install $VB_VERSION
#
echo
echo "Completed install of VirtualBox"
echo
echo "Installing (or replace) Extension Pack"
read -p "Press [Enter] key to continue or Ctrl-C to break ..."
VBoxManage extpack install --replace $EXT_PACK_FILE
#
# Assign VB user to vboxusers group
echo Assign VB user $VB_USER_ID to vboxusers group
usermod -a -G vboxusers $VB_USER_ID
#
echo "VirtualBox install completed!

If this is the initial install Run 'set-machine-folder' script as ${VB_USER_ID}
"
#
exit