#!/bin/sh

# lh_binary_grub(1) - installs grub into binary
# Copyright (C) 2006-2007 Daniel Baumann <daniel@debian.org>
#
# live-helper comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
# This is free software, and you are welcome to redistribute it
# under certain conditions; see COPYING for details.

set -e

# Source common functions
for FUNCTION in /usr/share/live-helper/functions/*.sh
do
	. ${FUNCTION}
done

# Set static variables
DESCRIPTION="installs grub into binary"
HELP=""
USAGE="${PROGRAM} [--force]"

Arguments "${@}"

# Reading configuration files
Read_conffile config/common
Read_conffile config/bootstrap
Read_conffile config/chroot
Read_conffile config/image
Set_defaults

# Requiring stage file
Require_stagefile .stage/bootstrap

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

# Checking stage file
Check_stagefile .stage/binary_grub

if [ "${LIVE_ARCHITECTURE}" != "amd64" ] && [ "${LIVE_ARCHITECTURE}" != "i386" ]
then
	echo "W: skipping binary_grub, foreign architecture."
	exit 0
fi

if [ "${LIVE_BOOTLOADER}" = "grub" ]
then
	# Check templates
	if [ ! -d "${LIVE_TEMPLATES}" ]
	then
		if [ -d ../"${LIVE_TEMPLATES}" ]
		then
			LIVE_TEMPLATES="../${LIVE_TEMPLATES}"
		else
			Echo_error "user specified templates not accessible in ${LIVE_TEMPLATES}"
			exit 1
		fi
	fi

	if [ ! -f chroot/usr/sbin/grub ]
	then
		PACKAGES="${PACKAGES} grub"
	fi

	if [ -n "${PACKAGES}" ]
	then
		# Installing symlinks
		case "${LH_APT}" in
			apt|apt-get)
				Chroot "apt-get install --yes ${PACKAGES}"
				;;

			aptitude)
				Chroot "aptitude install --assume-yes ${PACKAGES}"
				;;
		esac
	fi

	# Setting destination directory
	case "${LIVE_BINARY_IMAGE}" in
		iso|usb|hdd)
			DESTDIR="binary/live"
			;;

		net)
			Echo_error "not supported, FIXME"
			;;
	esac

	# Temporary check for broken syslinux
	if [ "${LIVE_BINARY_IMAGE}" = "iso" ]
	then
		case "${LIVE_ARCHITECTURE}" in
			i386)
				DESTDIR="${DESTDIR}.386"
				;;
		esac
	fi

	# Creating directory
	if [ ! -d "${DESTDIR}" ]
	then
		mkdir -p "${DESTDIR}"
	fi

	# Setting boot parameters
	if [ -n "${LIVE_ENCRYPTION}" ]
	then
		LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} encryption=${LIVE_ENCRYPTION}"
	fi

	if [ -n "${LIVE_USERNAME}" ]
	then
		LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} username=${LIVE_USERNAME}"
	fi

	if [ -n "${LIVE_HOSTNAME}" ]
	then
		LIVE_BOOTAPPEND="${LIVE_BOOTAPPEND} hostname=${LIVE_HOSTNAME}"
	fi

	LIVE_BOOTAPPEND="`echo ${LIVE_BOOTAPPEND} | sed -e 's/  //'`"

	# Assembling kernel configuration
	if [ "${LIVE_BINARY_IMAGE}" = "iso" ]
	then
		DEFAULT_FLAVOUR="`echo ${LIVE_KERNEL_FLAVOUR} | awk '{ print $1 }'`"
		LINUX="title\t\tDebian GNU/Linux - Live\nroot\t\t(cd)\nkernel\t\t/`basename ${DESTDIR}`/`basename chroot/boot/vmlinuz-*${DEFAULT_FLAVOUR}`\ninitrd\t\t/`basename ${DESTDIR}`/initrd.img-`basename chroot/boot/vmlinuz-*${DEFAULT_FLAVOUR} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
	else
		DEFAULT_FLAVOUR="`echo ${LIVE_KERNEL_FLAVOUR} | awk '{ print $1 }'`"
		LINUX="title\t\tDebian GNU/Linux - Live\nroot\t\t(cd)\nkernel\t\t`basename chroot/boot/vmlinuz-*${DEFAULT_FLAVOUR}`\ninitrd\t\tinitrd.img-`basename chroot/boot/vmlinuz-*${DEFAULT_FLAVOUR} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
	fi

	if [ "`echo ${LIVE_KERNEL_FLAVOUR} | wc -w`" -gt "1" ]
	then
		for KERNEL in chroot/boot/vmlinuz*
		do
			if [ -z "${LINUX}" ]
			then
				if [ "${LIVE_BINARY_IMAGE}" = "iso" ]
				then
					LINUX="title\t\tDebian GNU/Linux - Live, kernel `basename ${KERNEL} | sed -e 's/vmlinuz-//'`\nroot\t\t(cd)\nkernel\t\t/`basename ${DESTDIR}`/`basename ${KERNEL}`\ninitrd\t\t/`basename ${DESTDIR}`/initrd.img-`basename ${KERNEL} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
				else
					LINUX="title\t\tDebian GNU/Linux - Live, kernel `basename ${KERNEL} | sed -e 's/vmlinuz-//'`\nroot\t\t(cd)\nkernel\t\t`basename ${KERNEL}`\ninitrd\t\tinitrd.img-`basename ${KERNEL} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
				fi
			else
				if [ "${LIVE_BINARY_IMAGE}" = "iso" ]
				then
					LINUX="${LINUX}\n\ntitle\t\tDebian GNU/Linux - Live, kernel `basename ${KERNEL} | sed -e 's/vmlinuz-//'`\nroot\t\t(cd)\nkernel /`basename ${DESTDIR}`/`basename ${KERNEL}`\ninitrd\t\t/`basename ${DESTDIR}`/initrd.img-`basename ${KERNEL} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
				else
					LINUX="${LINUX}\n\ntitle\t\tDebian GNU/Linux - Live, kernel `basename ${KERNEL} | sed -e 's/vmlinuz-//'`\nroot\t\t(cd)\nkernel `basename ${KERNEL}`\ninitrd\t\tinitrd.img-`basename ${KERNEL} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
				fi
			fi
		done
	fi

	LINUX="`echo ${LINUX} | sed -e 's#//#/#g'`"

	# Assembling memtest configuration
	if [ -f "${DESTDIR}"/memtest ]
	then
		if [ "${LIVE_BINARY_IMAGE}" = "iso" ]
		then
			MEMTEST="title\t\tMemtest86+\nroot\t\t(cd)\nkernel\t\t/`basename ${DESTDIR}`/memtest"
			MEMTEST="`echo ${MEMTEST} | sed -e 's#//#/#g'`"
		else
			MEMTEST="title\t\tMemtest86+\nroot\t\t(cd)\nkernel\t\tmemtest"
		fi
	fi

	mkdir -p binary/boot/grub
	cp -r "${LIVE_TEMPLATES}"/grub/* binary/boot/grub

	if [ "${LIVE_BINARY_IMAGE}" = "iso" ]
	then
		cp chroot/usr/lib/grub/i386-pc/stage2_eltorito binary/boot/grub
	fi

	# Copying splash screen
	if [ -n "${LIVE_GRUB_SPLASH}" ]
	then
		# FIXME
		cp "${LIVE_GRUB_SPLASH}" binary/boot/grub

		LIVE_SPLASH="splashimage /boot/grub/`basename ${LIVE_GRUB_SPLASH}`"
	fi

	# Configure grub templates
cat >> binary/boot/grub/menu.lst << EOF
# This is a divider, added to separate the menu items below from the Debian
# ones.
title		Other:
root


LIVE_MEMTEST
EOF

	sed -i -e "s#LIVE_SPLASH#${LIVE_SPLASH}#" -e "s#LIVE_KERNEL_LIVE#${LINUX}#" -e "s#LIVE_KERNEL_INSTALL#${LIVE_KERNEL_INSTALL}#" -e "s#LIVE_MEMTEST#${MEMTEST}#" binary/boot/grub/menu.lst
	sed -i -e "s#LIVE_BOOTAPPEND#${LIVE_BOOTAPPEND}#" binary/boot/grub/menu.lst

	if [ -n "${PACKAGES}" ]
	then
		# Removing packages
		case "${LH_APT}" in
			apt|apt-get)
				Chroot "apt-get remove --purge --yes ${PACKAGES}"
				;;

			aptitude)
				Chroot "aptitude purge --assume-yes ${PACKAGES}"
				;;
		esac
	fi

	# Creating stage file
	Create_stagefile .stage/binary_grub
fi