#!/bin/sh
#
# Copyright 2011  Eric Hameleers, Eindhoven, NL
# Copyright 2011  Patrick Volkerding, Sebeka, Minnesota USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is 
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Bug reports, suggestions, etc for pxesetup: alien@slackware.com
#
TMP=/var/log/setup/tmp
if [ ! -d $TMP ]; then
  mkdir -p $TMP
fi

dialog --backtitle "Select Slackware installation source." \
--title "SOURCE MEDIA SELECTION" --menu \
"Please select the media which contains Slackware Linux:" \
13 70 6 \
"1" "Use a Slackware DVD" \
"2" "Use a hard drive partition" \
"3" "Use a pre-mounted directory" \
2> $TMP/pxemedia
if [ ! $? = 0 ]; then
 rm $TMP/pxemedia
 exit
fi

SOURCE_MEDIA="`cat $TMP/pxemedia`"
rm -f $TMP/pxemedia
if [ "$SOURCE_MEDIA" = "1" ]; then
 INSCD
elif [ "$SOURCE_MEDIA" = "2" ]; then
 INShd
elif [ "$SOURCE_MEDIA" = "3" ]; then
 INSdir
fi

# Find out where the PXE boot files are on the medium.
# Note: 'isolinux' will be used on the DVD and 'syslinux' on the USB stick.
if [ -f $(readlink -f $(cat $TMP/SeTDS))/isolinux/initrd.img ]; then
 SYSLINUXPATH="$(readlink -f $(cat $TMP/SeTDS))/isolinux"
elif [ -f $(readlink -f $(cat $TMP/SeTDS))/../isolinux/initrd.img ]; then
 SYSLINUXPATH="$(cd $(readlink -f $(cat $TMP/SeTDS))/../isolinux ; pwd)"
elif [ -f $(readlink -f $(cat $TMP/SeTDS))/../syslinux/initrd.img ]; then
 SYSLINUXPATH="$(cd $(readlink -f $(cat $TMP/SeTDS))/../syslinux ; pwd)"
elif [ -f $(readlink -f $(cat $TMP/SeTDS))/../../syslinux/initrd.img ]; then
 SYSLINUXPATH="$(cd $(readlink -f $(cat $TMP/SeTDS))/../../syslinux ; pwd)"
else
 SYSLINUXPATH=""
fi

if [ -d $(readlink -f $(cat $TMP/SeTDS))/../kernels ]; then
 KERNELPATH="$(cd $(readlink -f $(cat $TMP/SeTDS))/../kernels ; pwd)"
elif [ -d $(readlink -f $(cat $TMP/SeTDS))/../../kernels ]; then
 KERNELPATH="$(cd $(readlink -f $(cat $TMP/SeTDS))/../../kernels ; pwd)"
elif [ -d $(readlink -f $(cat $TMP/SeTDS))/../../syslinux/kernels ]; then
 KERNELPATH="$(cd $(readlink -f $(cat $TMP/SeTDS))/../../syslinux/kernels ; pwd)"
else
 KERNELPATH=""
fi

# Found them... hopefully.
if [ -n "$SYSLINUXPATH" -a -n "$KERNELPATH" ]; then
 # Setup symlinks to initrd files and kernels for the PXE boot:
 ( cd /var/lib/tftpboot
   for FILE in $(find $SYSLINUXPATH -type f -maxdepth 1) ; do
    ln -sf $FILE $(basename $FILE)
   done
   ln -sf $KERNELPATH kernels
 ) 2>/dev/null
 # Update the slackpxe.cfg file (need to strip off '/var/log/mount'):
 sed -i -e "s,^REMOTE_PATH=.*,REMOTE_PATH=/$(cat $TMP/SeTDS | cut -d/ -f5-)," /var/lib/tftpboot/slackpxe.cfg
else
 dialog --title "FTP/HTTP DOWNLOAD FAILURE" --msgbox "\
Could not find the kernel and/or initial ramdisk files. \n\
These are required for booting the client computer.\n\
Please try to setup the SOURCE location correctly." 7 68
fi