POST-DEINSTALL)

  echo '---> Starting post-deinstall script:'

  if [ -f %%PREFIX%%/etc/ifgraph.conf -o \

       -d %%PREFIX%%/ifgraph -o \

       -d %%PREFIX%%/var/ifgraph ]; then

    echo '---> You seem to have made some custom ifGraph configuration.'

    echo '---> - The "%%USER%%" user and "%%GROUP%%" group were therefore not deleted.'

    echo '---> - You may delete them with "pw groupdel %%GROUP%%; pw userdel %%USER%%".'

  else

    echo '---> Removing group "%%GROUP%%"'

    /usr/sbin/pw groupdel -n %%GROUP%%

    echo '---> Removing user "%%USER%%"'

    echo 'y' | /usr/sbin/pw userdel -n %%USER%%

  fi

  ;;

PRE-INSTALL)

  echo "---> Starting pre-install script:"

  if [ -z "%%USER%%" -o \

       -z "%%GROUP%%" ]; then

    echo "ERROR: A required pragma was empty"

    exit 1

  fi

  if pw showgroup "%%GROUP%%" 2>/dev/null; then

    echo "---> Using existing group \"%%GROUP%%\""

  else

    echo "---> Adding group \"%%GROUP%%\""

    pw addgroup %%GROUP%% -h - || exit 1

  fi

  # Create user if required

  if pw showuser "%%USER%%" 2>/dev/null; then

    echo "---> Using existing user \"%%USER%%\""

  else

    echo "---> Adding user \"%%USER%%\""

    pw adduser %%USER%% -g %%GROUP%% -h - \

      -s "/sbin/nologin" -c "ifGraph User" || exit 1

  fi

  ;;