#! /bin/sh
set -e

# Generate VasEBoot.cfg by inspecting /boot contents.
# Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc.
#
# VAS_EBOOT 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.
#
# VAS_EBOOT 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 VAS_EBOOT.  If not, see <http://www.gnu.org/licenses/>.

prefix="@prefix@"
exec_prefix="@exec_prefix@"
datarootdir="@datarootdir@"

prefix="@prefix@"
exec_prefix="@exec_prefix@"
sbindir="@sbindir@"
bindir="@bindir@"
sysconfdir="@sysconfdir@"
PACKAGE_NAME=@PACKAGE_NAME@
PACKAGE_VERSION=@PACKAGE_VERSION@
host_os=@host_os@
datadir="@datadir@"
if [ "x$pkgdatadir" = x ]; then
    pkgdatadir="${datadir}/@PACKAGE@"
fi
# export it for scripts
export pkgdatadir

VasEBoot_cfg=""
VasEBoot_mkconfig_dir="${sysconfdir}"/VasEBoot.d

self=`basename $0`

VasEBoot_probe="${sbindir}/@VasEBoot_probe@"
VasEBoot_file="${bindir}/@VasEBoot_file@"
VasEBoot_editenv="${bindir}/@VasEBoot_editenv@"
VasEBoot_script_check="${bindir}/@VasEBoot_script_check@"

export TEXTDOMAIN=@PACKAGE@
export TEXTDOMAINDIR="@localedir@"

. "${pkgdatadir}/VasEBoot-mkconfig_lib"

# Usage: usage
# Print the usage.
usage () {
    gettext_printf "Usage: %s [OPTION]\n" "$self"
    gettext "Generate a VasEBoot config file"; echo
    echo
    print_option_help "-o, --output=$(gettext FILE)" "$(gettext "output generated config to FILE [default=stdout]")"
    print_option_help "-h, --help" "$(gettext "print this message and exit")"
    print_option_help "-V, --version" "$(gettext "print the version information and exit")"
    echo
    gettext "Report bugs to <bug-VasEBoot@gnu.org>."; echo
}

argument () {
  opt=$1
  shift

  if test $# -eq 0; then
      gettext_printf "%s: option requires an argument -- \`%s'\n" "$self" "$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 ;;
    -o | --output)
	VasEBoot_cfg=`argument $option "$@"`; shift;;
    --output=*)
	VasEBoot_cfg=`echo "$option" | sed 's/--output=//'`
	;;
    -*)
	gettext_printf "Unrecognized option \`%s'\n" "$option" 1>&2
	usage
	exit 1
	;;
    # Explicitly ignore non-option arguments, for compatibility.
    esac
done

if [ "x$EUID" = "x" ] ; then
  EUID=`id -u`
fi

if [ "$EUID" != 0 ] ; then
  root=f
  case "`uname 2>/dev/null`" in
    CYGWIN*)
      # Cygwin: Assume root if member of admin group
      for g in `id -G 2>/dev/null` ; do
	case $g in
	  0|544) root=t ;;
	esac
      done ;;
  esac
  if [ $root != t ] ; then
    gettext_printf "%s: You must run this as root\n" "$self" >&2
    exit 1
  fi
fi

set $VasEBoot_probe dummy
if test -f "$1"; then
    :
else
    gettext_printf "%s: Not found.\n" "$1" 1>&2
    exit 1
fi

# Device containing our userland.  Typically used for root= parameter.
VAS_EBOOT_DEVICE="`${VasEBoot_probe} --target=device /`"
VAS_EBOOT_DEVICE_UUID="`${VasEBoot_probe} --device ${VAS_EBOOT_DEVICE} --target=fs_uuid 2> /dev/null`" || true
VAS_EBOOT_DEVICE_PARTUUID="`${VasEBoot_probe} --device ${VAS_EBOOT_DEVICE} --target=partuuid 2> /dev/null`" || true

# Device containing our /boot partition.  Usually the same as VAS_EBOOT_DEVICE.
VAS_EBOOT_DEVICE_BOOT="`${VasEBoot_probe} --target=device /boot`"
VAS_EBOOT_DEVICE_BOOT_UUID="`${VasEBoot_probe} --device ${VAS_EBOOT_DEVICE_BOOT} --target=fs_uuid 2> /dev/null`" || true

# Disable os-prober by default due to security reasons.
VAS_EBOOT_DISABLE_OS_PROBER="true"

# Filesystem for the device containing our userland.  Used for stuff like
# choosing Hurd filesystem module.
VAS_EBOOT_FS="`${VasEBoot_probe} --device ${VAS_EBOOT_DEVICE} --target=fs 2> /dev/null || echo unknown`"

if [ x"$VAS_EBOOT_FS" = xunknown ]; then
    VAS_EBOOT_FS="$(stat -f -c %T / || echo unknown)"
fi

# Provide a default set of stock linux early initrd images.
# Define here so the list can be modified in the sourced config file.
if [ "x${VAS_EBOOT_EARLY_INITRD_LINUX_STOCK}" = "x" ]; then
	VAS_EBOOT_EARLY_INITRD_LINUX_STOCK="intel-uc.img intel-ucode.img amd-uc.img amd-ucode.img early_ucode.cpio microcode.cpio"
fi

if test -f ${sysconfdir}/default/VasEBoot ; then
  . ${sysconfdir}/default/VasEBoot
fi

if [ "x${VAS_EBOOT_DISABLE_UUID}" = "xtrue" ]; then
  if [ -z "${VAS_EBOOT_DISABLE_LINUX_UUID}" ]; then
    VAS_EBOOT_DISABLE_LINUX_UUID="true"
  fi
  if [ -z "${VAS_EBOOT_DISABLE_LINUX_PARTUUID}" ]; then
    VAS_EBOOT_DISABLE_LINUX_PARTUUID="true"
  fi
fi

# XXX: should this be deprecated at some point?
if [ "x${VAS_EBOOT_TERMINAL}" != "x" ] ; then
  VAS_EBOOT_TERMINAL_INPUT="${VAS_EBOOT_TERMINAL}"
  VAS_EBOOT_TERMINAL_OUTPUT="${VAS_EBOOT_TERMINAL}"
fi

termoutdefault=0
if [ "x${VAS_EBOOT_TERMINAL_OUTPUT}" = "x" ]; then
    VAS_EBOOT_TERMINAL_OUTPUT=gfxterm;
    termoutdefault=1;
fi

for x in ${VAS_EBOOT_TERMINAL_OUTPUT}; do
    case "x${x}" in
	xgfxterm) ;;
	xconsole | xserial | xofconsole | xvga_text)
            # make sure all our children behave in conformance with ascii..
	    export LANG=C;;
	*) echo "Invalid output terminal \"${VAS_EBOOT_TERMINAL_OUTPUT}\"" >&2 ; exit 1 ;;
    esac
done

VAS_EBOOT_ACTUAL_DEFAULT="$VAS_EBOOT_DEFAULT"

if [ "x${VAS_EBOOT_ACTUAL_DEFAULT}" = "xsaved" ] ; then VAS_EBOOT_ACTUAL_DEFAULT="`"${VasEBoot_editenv}" - list | sed -n '/^saved_entry=/ s,^saved_entry=,,p'`" ; fi


# These are defined in this script, export them here so that user can
# override them.
export VAS_EBOOT_DEVICE \
  VAS_EBOOT_DEVICE_UUID \
  VAS_EBOOT_DEVICE_PARTUUID \
  VAS_EBOOT_DEVICE_BOOT \
  VAS_EBOOT_DEVICE_BOOT_UUID \
  VAS_EBOOT_DISABLE_OS_PROBER \
  VAS_EBOOT_FS \
  VAS_EBOOT_FONT \
  VAS_EBOOT_PRELOAD_MODULES \
  VAS_EBOOT_ACTUAL_DEFAULT

# These are optional, user-defined variables.
export VAS_EBOOT_DEFAULT \
  VAS_EBOOT_HIDDEN_TIMEOUT \
  VAS_EBOOT_HIDDEN_TIMEOUT_QUIET \
  VAS_EBOOT_TIMEOUT \
  VAS_EBOOT_TIMEOUT_STYLE \
  VAS_EBOOT_DEFAULT_BUTTON \
  VAS_EBOOT_HIDDEN_TIMEOUT_BUTTON \
  VAS_EBOOT_TIMEOUT_BUTTON \
  VAS_EBOOT_TIMEOUT_STYLE_BUTTON \
  VAS_EBOOT_BUTTON_CMOS_ADDRESS \
  VAS_EBOOT_BUTTON_CMOS_CLEAN \
  VAS_EBOOT_DISTRIBUTOR \
  VAS_EBOOT_CMDLINE_LINUX \
  VAS_EBOOT_CMDLINE_LINUX_DEFAULT \
  VAS_EBOOT_CMDLINE_LINUX_RECOVERY \
  VAS_EBOOT_CMDLINE_XEN \
  VAS_EBOOT_CMDLINE_XEN_DEFAULT \
  VAS_EBOOT_CMDLINE_LINUX_XEN_REPLACE \
  VAS_EBOOT_CMDLINE_LINUX_XEN_REPLACE_DEFAULT \
  VAS_EBOOT_CMDLINE_NETBSD \
  VAS_EBOOT_CMDLINE_NETBSD_DEFAULT \
  VAS_EBOOT_CMDLINE_GNUMACH \
  VAS_EBOOT_TOP_LEVEL \
  VAS_EBOOT_TOP_LEVEL_XEN \
  VAS_EBOOT_TOP_LEVEL_OS_PROBER \
  VAS_EBOOT_EARLY_INITRD_LINUX_CUSTOM \
  VAS_EBOOT_EARLY_INITRD_LINUX_STOCK \
  VAS_EBOOT_TERMINAL_INPUT \
  VAS_EBOOT_TERMINAL_OUTPUT \
  VAS_EBOOT_SERIAL_COMMAND \
  VAS_EBOOT_DISABLE_UUID \
  VAS_EBOOT_DISABLE_LINUX_UUID \
  VAS_EBOOT_DISABLE_LINUX_PARTUUID \
  VAS_EBOOT_DISABLE_RECOVERY \
  VAS_EBOOT_VIDEO_BACKEND \
  VAS_EBOOT_GFXMODE \
  VAS_EBOOT_BACKGROUND \
  VAS_EBOOT_THEME \
  VAS_EBOOT_GFXPAYLOAD_LINUX \
  VAS_EBOOT_INIT_TUNE \
  VAS_EBOOT_SAVEDEFAULT \
  VAS_EBOOT_ENABLE_CRYPTODISK \
  VAS_EBOOT_BADRAM \
  VAS_EBOOT_OS_PROBER_SKIP_LIST \
  VAS_EBOOT_DISABLE_SUBMENU \
  VAS_EBOOT_FORCE_EFI_ALL_VIDEO

if test "x${VasEBoot_cfg}" != "x"; then
  rm -f "${VasEBoot_cfg}.new"
  oldumask=$(umask); umask 077
  exec > "${VasEBoot_cfg}.new"
  umask $oldumask
fi
gettext "Generating VasEBoot configuration file ..." >&2
echo >&2

cat << EOF
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by $self using templates
# from ${VasEBoot_mkconfig_dir} and settings from ${sysconfdir}/default/VasEBoot
#
EOF


for i in "${VasEBoot_mkconfig_dir}"/* ; do
  case "$i" in
    # emacsen backup files. FIXME: support other editors
    *~) ;;
    # emacsen autosave files. FIXME: support other editors
    */\#*\#) ;;
    *)
      if VasEBoot_file_is_not_garbage "$i" && test -x "$i" ; then
        echo
        echo "### BEGIN $i ###"
        "$i"
        echo "### END $i ###"
      fi
    ;;
  esac
done

if test "x${VasEBoot_cfg}" != "x" ; then
  if ! ${VasEBoot_script_check} ${VasEBoot_cfg}.new; then
    # TRANSLATORS: %s is replaced by filename
    gettext_printf "Syntax errors are detected in generated VAS_EBOOT config file.
Ensure that there are no errors in /etc/default/VasEBoot
and /etc/VasEBoot.d/* files or please file a bug report with
%s file attached." "${VasEBoot_cfg}.new" >&2
    echo >&2
    exit 1
  else
    # none of the children aborted with error, install the new VasEBoot.cfg
    oldumask=$(umask)
    umask 077
    cat ${VasEBoot_cfg}.new > ${VasEBoot_cfg}
    umask $oldumask
    rm -f ${VasEBoot_cfg}.new
  fi
fi

gettext "done" >&2
echo >&2