VBOXVER=5.1.2
SRC_URL=http://download.virtualbox.org/virtualbox/${VBOXVER}/Oracle_VM_VirtualBox_Extension_Pack-${VBOXVER}.vbox-extpack
MD5SUM=7614ce90e17297f80d6a5822252c90d9

DIR=/usr/share/virtualbox/extensions
TMP_DIR=/tmp/Oracle_VM_VirtualBox_Extension_Pack

virtualbox-ext-oracle-installer() {
  [ -d $TMP_DIR ] && rm -rf $TMP_DIR
  mkdir $TMP_DIR
  cd $TMP_DIR
  
  echo "$MD5SUM  $DIR/Oracle_VM_VirtualBox_Extension_Pack-${VBOXVER}.vbox-extpack" > md5sums.check

  if md5sum -c md5sums.check
  then
          echo "nothing to do, you are already using the latest VirtualBox Extension provided by Oracle"
  else
          wget $SRC_URL
          cp -f Oracle_VM_VirtualBox_Extension_Pack-${VBOXVER}.vbox-extpack $DIR/
  fi
}

post_install () {
  virtualbox-ext-oracle-installer
  VBoxManage extpack install "${DIR}/Oracle_VM_VirtualBox_Extension_Pack-${VBOXVER}.vbox-extpack" >/dev/null
}

pre_upgrade() {
  post_remove
}

post_upgrade() {
  post_install
}

post_remove() {
  VBoxManage extpack uninstall "Oracle VM VirtualBox Extension Pack" >/dev/null
  rm -rf ${DIR}/Oracle_VM_VirtualBox_Extension_Pack-${VBOXVER}.vbox-extpack >/dev/null
}

# vim:set ts=2 sw=2 ft=sh et: