# the following variables are available in the template:
#
# $INTERFACE_     (interface for the terminalserver)
# $IP_            (ip for the terminalserver to bind)
# $NETMASK_       (network mask)
# $GW_            (gateway)
# $NAMESERVERS_   (nameservers for the nodes)
# $IPRANGE_FROM_  (user configured iprange, first ip)
# $IPRANGE_TO_    (user configured iprange, last ip)
# $NETWORK_       (first ip in this subnet)
# $OPTIONS_       (options for grml-terminalserver)
# $BOOT_ARGS_     (boot arguments for the nodes)
#
# NOTE:
# templates are shellscript fragments and will be sourced from the
# terminalserver
#
# GLOBAL_README_END

# default boot arguments used for both grub and pxelinux
if [ -e "$MOUNT_POINT_" ]; then
    default_boot_args_="root=/dev/nfs rw nfsroot=$IP_:$MOUNT_POINT_ \
noprompt noeject"
else
    default_boot_args_="ramdisk_size=24000 root=/dev/ram0 rw \
init=/etc/init nfsdir=$IP_:$MOUNT_POINT_ nodhcp noprompt noeject \
apm=power-off nomce"
fi

# special boot arguments required by pxelinux
pxe_def_boot_args_="$default_boot_args_"

###
## create pxelinux config
###
DEST_DIR=$(mktemp -d)
if [ -d /run/live/medium ] ; then # since December 2018
  grml2usb --bootloader-only \
      --bootoptions="$pxe_def_boot_args_ $BOOT_ARGS_" \
      --remove-bootoption=nodhcp \
      /run/live/medium "$DEST_DIR"

  mv "$DEST_DIR"/boot/syslinux/* "$TFTPD_DATA_DIR_/"
  rmdir "$DEST_DIR"/boot/syslinux

  mv "$DEST_DIR"/boot/ "$TFTPD_DATA_DIR_"
elif [ -d /lib/live/mount/medium ] ; then
  grml2usb --bootloader-only \
      --bootoptions="$pxe_def_boot_args_ $BOOT_ARGS_" \
      --remove-bootoption=nodhcp \
      /lib/live/mount/medium "$DEST_DIR"

  mv "$DEST_DIR"/boot/syslinux/* "$TFTPD_DATA_DIR_/"
  rmdir "$DEST_DIR"/boot/syslinux

  mv "$DEST_DIR"/boot/ "$TFTPD_DATA_DIR_"
else
  if [ ! -d /usr/share/grml-live/templates/boot/isolinux ] ; then
    echo "E: Could not find isolinux directory, can not operate without.

Did you boot the system with the toram=... boot option? If so please
either do not use the toram boot option at all or use boot option toram
without any arguments (just \"toram\" instead of \"toram=...\")." >&2
    exit 2
  fi

  array=( $(cat /etc/grml_version) )
  grml_name_=${array[0]}
  grml_version_=${array[1]}

  cp /usr/share/grml-live/templates/boot/isolinux/* "$TFTPD_DATA_DIR_/"

  config_files_=$(find "$TFTPD_DATA_DIR_/" -name "*.cfg" -type f)
  sed -i "s/%ARCH%/$(uname -m)/" $config_files_
  sed -i "s/%BOOTID%/$RANDOM/" $config_files_
  sed -i "s/%SHORT_NAME%/dummy/" $config_files_
  sed -i "s/%VERSION%/$grml_version_/" $config_files_
  sed -i "s/%GRML_NAME%/$grml_name_/" $config_files_
  sed -i "s/%DISTRI_SPLASH%/grml.png/" $config_files_
  sed -i "s/%DISTRI_INFO%/Grml/" $config_files_
  sed -i "s#\(^.*append.*initrd.*$\)#\1 $pxe_def_boot_args_ $BOOT_ARGS_#" $config_files_
  cat > "$TFTPD_DATA_DIR_/grmlmain.cfg"<<EOT
  include default.cfg
include menuoptions.cfg
include grml.cfg
include options.cfg
include isoprompt.cfg
include hd.cfg
include hidden.cfg
EOT

fi

# Copy initrd.img and vmlinuz from all directories which name begins
# with grml, e.g. grml32full and grml64full
# This way we can boot multiple ISOs
for filename in "${MULTIBOOT_PATH_}"/grml* ; do
  [ -d "$filename" ] || continue
  cp -r "${filename}" "${TFTPD_DATA_DIR_}/boot/"
done

config_files_=$(find "$TFTPD_DATA_DIR_/" -name "*.cfg" -type f)

# cd is multi iso, grml2usb got it right ;0
if [ -d "$MOUNT_POINT_"/boot/release ] ; then
   sed -i -e 's#\(.*\)/boot/\(.*\)#\1\2#' $config_files_
fi

# adjust ldbsd.com bootline
if ls "$TFTPD_DATA_DIR_/"addon_*_bsd.cfg >/dev/null 2>&1; then
  sed -i -e 's#\(.*kernel .*/ldbsd.com\)#\1 set image /boot/addons/bsd4grml/bsd.rd`echo Type "boot" to load MirOS bsd4grml via keeppxe#' "$TFTPD_DATA_DIR_/"addon_*_bsd.cfg
fi

# remove grub entries
rm -f "$TFTPD_DATA_DIR_/"addon_*grub*.cfg

mv "$TFTPD_DATA_DIR_/syslinux.cfg" "$TFTPD_DATA_DIR_/pxelinux.cfg/default"
rm -rf "$DEST_DIR"

let ret_=$ret_+$?
return $ret_