# 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

if grep -q live-media-path= /proc/cmdline 2>/dev/null ; then
  live_media_path_="live-media-path=$(awk -F live-media-path= '{print $2}' /proc/cmdline | awk '{print $1}')"
fi
if [ ! -d /live/image/boot ] ; then
  live_media_path_="live-media-path=/"
fi

# 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 grub
grub_def_boot_args_="/vmlinuz $default_boot_args_ $live_media_path_"

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

# default arguments for framebuffer console
def_fb_args_="vga=791"
no_fb_args_="vga=normal"

###
## create grub config
###

cat >"$TFTPD_DATA_DIR_/menu.lst" <<EOT
default=0
timeout=10
title GRML
  root (nd)
  kernel $grub_def_boot_args_ $def_fb_args_ $BOOT_ARGS_
  initrd /initrd.img

title GRML no framebuffer
  root (nd)
  kernel $grub_def_boot_args_ $no_fb_args_ $BOOT_ARGS_

title GRML small
  root (nd)
  kernel $grub_def_boot_args_ small $def_fb_args_ $BOOT_ARGS_
  initrd /initrd.img

title GRML small nofb
  root (nd)
  kernel $grub_def_boot_args_ small $no_fb_args_ $BOOT_ARGS_
  initrd /initrd.img

title GRML debuginit
  root (nd)
  kernel $grub_def_boot_args_ debuginitrd $def_fb_args_ $BOOT_ARGS_
  initrd /initrd.img

title GRML debuginit nofb
  root (nd)
  kernel $grub_def_boot_args_ debuginitrd $no_fb_args_ $BOOT_ARGS_
  initrd /initrd.img

title GRML rescue
  root (nd)
  kernel $grub_def_boot_args_ $no_fb_args_
  initrd /initrd.img

title memtest
  root (nd)
  kernel /memtest

title Reload config
  configfile (nd)/menu.lst
EOT

ret_=$?


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

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

  mv "$DEST_DIR"/boot/ "$TFTPD_DATA_DIR_"
else # there is no kernel inside /live/image copy it from /boot
  if [ ! -d /usr/share/grml-live/templates/boot/isolinux ] ; then
    echo "E: Could not find isolinux template directory" >&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


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_
else
  # remove normal kernel path and use our image
  sed -i -e 's/.*kernel.*vmlinuz/  kernel vmlinuz/' $config_files_
  sed -i -e 's/\(initrd\)=[[:alnum:]/._-]*/\1=initrd.img/' $config_files_
  # remove live-media-path per default
  sed -i -e 's#live-media-path=[[:alnum:]/._-]*##' $config_files_

  # append live-media-path if needed
  if [ ! -z "$live_media_path_" ] ; then
    sed -i -e "s#\(^.*append.*initrd.*$\)#\1 $live_media_path_#" $config_files_
  fi

fi
# adjust ldbsd.com bootline
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

# 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_