#! /bin/sh

# Install GRUB on your drive.
# Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010  Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.

# Initialize some variables.
transform="@program_transform_name@"

prefix=@prefix@
exec_prefix=@exec_prefix@
sbindir=@sbindir@
bindir=@bindir@
libdir=@libdir@
PACKAGE_NAME=@PACKAGE_NAME@
PACKAGE_TARNAME=@PACKAGE_TARNAME@
PACKAGE_VERSION=@PACKAGE_VERSION@
target_cpu=@target_cpu@
platform=@platform@
host_os=@host_os@
pkglibdir=${libdir}/`echo ${PACKAGE_TARNAME}/${target_cpu}-${platform} | sed ${transform}`
localedir=@datadir@/locale
native_platform=@platform@
pkglib_DATA="moddep.lst command.lst fs.lst partmap.lst parttool.lst handler.lst video.lst crypto.lst terminal.lst"

self=`basename $0`

grub_mkimage=${bindir}/`echo grub-mkimage | sed ${transform}`
rootdir=/srv/tftp
grub_prefix=`echo /boot/grub | sed ${transform}`
modules=

install_device=
no_floppy=
recheck=no
debug=no
debug_image=
subdir=`echo /boot/grub | sed ${transform}`
pc_dir=${libdir}/$(echo ${PACKAGE_TARNAME} | sed ${transform})/i386-pc

# Usage: usage
# Print the usage.
usage () {
    cat <<EOF
Usage: $self [OPTION] install_device
Install GRUB on your drive.

  -h, --help              print this message and exit
  -v, --version           print the version information and exit
  --modules=MODULES       pre-load specified modules MODULES
  --net-directory=DIR     root directory of TFTP server
  --subdir=DIR            relative subdirectory on network server
  --grub-mkimage=FILE     use FILE as grub-mkimage

$self copies GRUB images into net_directory/subdir/${target_cpu}-${platform}

Report bugs to <bug-grub@gnu.org>.
EOF
}

argument () {
  opt=$1
  shift

  if test $# -eq 0; then
      echo "$0: option requires an argument -- '$opt'" 1>&2
      exit 1
  fi
  echo $1
}

# Check the arguments.
while test $# -gt 0
do
    option=$1
    shift

    case "$option" in
    -h | --help)
	usage
	exit 0 ;;
    -v | --version)
	echo "$self (${PACKAGE_NAME}) ${PACKAGE_VERSION}"
	exit 0 ;;

    --modules)
	modules=`argument $option "$@"`; shift;;
    --modules=*)
	modules=`echo "$option" | sed 's/--modules=//'` ;;

    --net-directory)
	rootdir=`argument $option "$@"`; shift;;
    --net-directory=*)
	rootdir=`echo "$option" | sed 's/--net-directory=//'` ;;

    --subdir)
	subdir=`argument $option "$@"`; shift;;
    --subdir=*)
	subdir=`echo "$option" | sed 's/--subdir=//'` ;;

    --grub-mkimage)
	grub_mkimage=`argument $option "$@"`; shift;;
    --grub-mkimage=*)
	grub_mkimage=`echo "$option" | sed 's/--grub-mkimage=//'` ;;

    # This is an undocumented feature...
    --debug)
	debug=yes ;;
    --debug-image)
	debug_image=`argument $option "$@"`; shift;;
    --debug-image=*)
	debug_image=`echo "$option" | sed 's/--debug-image=//'` ;;

    # Intentionally undocumented
    --override-directory)
        override_dir=`argument $option "$@"`
	shift
	PATH=${override_dir}:$PATH
	export PATH
	;;
    --override-directory=*)
	override_dir=`echo "${option}/" | sed 's/--override-directory=//'`
	PATH=${override_dir}:$PATH
	export PATH
	;;

    -*)
	echo "Unrecognized option \`$option'" 1>&2
	usage
	exit 1
	;;
    *)
	if test "x$install_device" != x; then
	    echo "More than one install_devices?" 1>&2
	    usage
	    exit 1
	fi
	install_device="${option}" ;;
    esac
done

set $grub_mkimage dummy
if test -f "$1"; then
    :
else
    echo "$1: Not found." 1>&2
    exit 1
fi

# Create the GRUB directory if it is not present.
mkdir -p "${rootdir}/${subdir}" || exit 1

process_input_dir ()
{ 
    input_dir="$1"
    platform="$2"
    grubdir="${rootdir}/${subdir}/${platform}"
    config_opt=
    mkdir -p "$grubdir" || exit 1

    for file in ${grubdir}/*.mod ${grubdir}/*.lst ${grubdir}/*.img ${grubdir}/efiemu??.o; do
	if test -f $file && [ "`basename $file`" != menu.lst ]; then
	    rm -f $file || exit 1
	fi
    done
    for file in ${input_dir}/*.mod; do
        if test -f "$file"; then
            cp -f "$file" "$grubdir/"
        fi
    done
    for file in ${pkglib_DATA}; do
	if test -f "${input_dir}/${file}"; then
            cp -f "${input_dir}/${file}" "$grubdir/"
	fi
    done

    mkdir -p "$grubdir/locale"
    for file in ${input_dir}/po/*.mo; do
        if test -f "$file"; then
	    cp -f "$file" "$grubdir/locale/"
	fi
    done

    rm -f ${grubdir}/load.cfg

    if [ "x${debug_image}" != x ]; then
       echo "set debug='${debug_image}'" >> ${grubdir}/load.cfg
       config_opt="-c ${grubdir}/load.cfg "
    fi

    case "${platform}" in
    	 i386-pc) mkimage_target=i386-pc-pxe;
	 	  netmodules="pxe";
		  prefix="(pxe)/${subdir}/${platform}";
		  ext=0 ;;
    	 *) echo Unsupported platform ${platform};
    	    exit 1;;
    esac

    cat << EOF > ${grubdir}/grub.cfg
source ${subdir}/grub.cfg
EOF

    $grub_mkimage ${config_opt} -d "${input_dir}" -O ${mkimage_target} --output=${grubdir}/core.$ext --prefix=$prefix $modules $netmodules || exit 1
    echo "Netboot directory for ${platform} created. Configure your DHCP server to point to ${subdir}/${platform}/core.$ext"
}

if [ "${override_dir}" = "" ] ; then
    if test -e "${pc_dir}" ; then
        process_input_dir ${pc_dir} i386-pc
    fi
else
    process_input_dir ${override_dir} ${target_cpu}-${native_platform}
fi


# Bye.
exit 0