#!/bin/sh

# required files from slackware-12.0
# kernels/huge.s/bzImage
# kernels/hugesmp.s/bzImage
# kernels/speakup.s/bzImage
# isolinux/f2.txt
# isolinux/message.txt
# usb-and-pxe-installers/initrd.img
# usb-and-pxe-installers/pxelinux.cfg_default
# /usr/share/syslinux/pxelinux.0

SLACKWARE=${1/%\//}
TMP=${TMP:-/tmp}

if [ -z "$SLACKWARE" -o ! -d "$SLACKWARE" ] ; then
  echo "Point this script at your toplevel slackware-\$VERSION directory."
  echo
  echo "IE: \"$(basename $0) /pub/mirrors/slackware/slackware-12.0/\""
  exit 1
fi

# clean up old template
rm -rf $TMP/tftpboot/
mkdir -p $TMP/tftpboot/pxelinux.cfg/

cd $SLACKWARE/

# we'll do the following in stages in case the user points this script
# at a non-slackware directory.

if [ ! -z "$(ls kernels/*/bzImage 2> /dev/null)" ] ; then
  cp -p --parents kernels/*/bzImage $TMP/tftpboot/
else
  echo "Kernels ($SLACKWARE/kernels/*/bzImage) not found, aborting."
  exit 1
fi
if [ ! -z "$(ls isolinux/*.txt 2> /dev/null)" ] ; then
  cp -p isolinux/*.txt $TMP/tftpboot/
else
  echo "Installer messages ($SLACKWARE/isolinux/*.txt) not found, aborting."
  exit 1
fi
if [ -e usb-and-pxe-installers/initrd.img ] ; then
  cp -p usb-and-pxe-installers/initrd.img $TMP/tftpboot/
else
  echo "Initial ramdisk image ($SLACKWARE/usb-and-pxe-installers/initrd.img) not found, aborting."
  exit 1
fi
if [ -e usb-and-pxe-installers/pxelinux.cfg_default ] ; then
  cp -p usb-and-pxe-installers/pxelinux.cfg_default $TMP/tftpboot/pxelinux.cfg/default
else
  echo "Installer config ($SLACKWARE/usb-and-pxe-installers/pxelinux.cfg_default) not found, aborting."
  exit 1
fi
if [ ! -z "$(ls slackware/a/syslinux-*.tgz 2> /dev/null)" ] ; then
  mkdir $TMP/$$/
  tar zxf slackware/a/syslinux-*.tgz -C $TMP/$$/
  cp -p $(find $TMP/$$/ -name 'pxelinux.0') $TMP/tftpboot/
  rm -rf $TMP/$$/
else
  echo "Syslinux package ($SLACKWARE/slackware/a/syslinux-*.tgz) not found, aborting."
  exit 1
fi

echo "$TMP/tftpboot/ was successfully created & populated."
echo
echo "You may wish to \"chown -R root:root $TMP/tftpboot/\" before"
echo "moving it to your preferred location (typically /tftpboot/)."