#!/bin/sh

# lh_binary_syslinux(1) - installs syslinux 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 syslinux 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_syslinux

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

if [ "${LIVE_BOOTLOADER}" = "syslinux" ]
then
	# Check templates
	if [ ! -d "${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/bin/syslinux ]
	then
		PACKAGES="${PACKAGES} syslinux"
	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)
			DESTDIR="binary/live"
			;;

		net)
			DESTDIR="tftpboot"
			;;

		usb|hdd)
			DESTDIR="binary"
			;;
	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="label LIVE\n  kernel /`basename ${DESTDIR}`/`basename chroot/boot/vmlinuz-*${DEFAULT_FLAVOUR}`\n  append initrd=/`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 $1 }'`"
		LINUX="label LIVE\n  kernel `basename chroot/boot/vmlinuz-*${DEFAULT_FLAVOUR}`\n  append initrd=initrd.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="label LIVE-`basename ${KERNEL} | sed -e 's/vmlinuz-//'`\n  kernel /`basename ${DESTDIR}`/`basename ${KERNEL}`\n  append initrd=/`basename ${DESTDIR}`/initrd.img-`basename ${KERNEL} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
				else
					LINUX="label LIVE-`basename ${KERNEL} | sed -e 's/vmlinuz-//'`\n  kernel `basename ${KERNEL}`\n  append initrd=initrd.img-`basename ${KERNEL} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
				fi
			else
				if [ "${LIVE_BINARY_IMAGE}" = "iso" ]
				then
					LINUX="${LINUX}\nlabel LIVE-`basename ${KERNEL} | sed -e 's/vmlinuz-//'`\n  kernel /`basename ${DESTDIR}`/`basename ${KERNEL}`\n  append initrd=/`basename ${DESTDIR}`/initrd.img-`basename ${KERNEL} | sed -e 's/vmlinuz-//'` boot=casper LIVE_BOOTAPPEND"
				else
					LINUX="${LINUX}\nlabel LIVE-`basename ${KERNEL} | sed -e 's/vmlinuz-//'`\n  kernel `basename ${KERNEL}`\n  append initrd=initrd.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="label memtest\n  kernel /`basename ${DESTDIR}`/memtest"
			MEMTEST="`echo ${MEMTEST} | sed -e 's#//#/#g'`"
		else
			MEMTEST="label memtest\n  kernel memtest"
		fi
	fi

	case "${LIVE_BINARY_IMAGE}" in
		iso)
			# Copying syslinux
			mkdir -p binary/isolinux
			cp chroot/usr/lib/syslinux/isolinux.bin binary/isolinux
			cp -r "${LIVE_TEMPLATES}"/syslinux/* binary/isolinux

			# Copying splash screen
			if [ -n "${LIVE_SYSLINUX_SPLASH}" ]
			then
				cp "${LIVE_SYSLINUX_SPLASH}" binary/isolinux/splash.rle
			fi

			# Configure syslinux templates
			sed -i -e "s#LIVE_KERNEL_LIVE#${LINUX}#" -e "s#LIVE_KERNEL_INSTALL#${LIVE_KERNEL_INSTALL}#" -e "s#LIVE_MEMTEST#${MEMTEST}#" binary/isolinux/isolinux.cfg
			sed -i -e "s#LIVE_BOOTAPPEND#${LIVE_BOOTAPPEND}#" binary/isolinux/isolinux.cfg
			sed -i -e "s/LIVE_DATE/`date +%Y%m%d`/" binary/isolinux/f1.txt
			sed -i -e "s/LIVE_VERSION/${VERSION}/" binary/isolinux/f10.txt

			# Remove unused files
			rm -f binary/isolinux/pxelinux.cfg

			# Working arround syslinux 8.3 limitation
			if [ "`echo ${LIVE_KERNEL_FLAVOUR} | wc -w`" -gt "1" ]
			then
				for FLAVOUR in ${LIVE_KERNEL_FLAVOUR}
				do
					NUMBER=$(($NUMBER + 1))

					mv "${DESTDIR}"/vmlinuz-*-${FLAVOUR} "${DESTDIR}"/vmlinuz${NUMBER}
					mv "${DESTDIR}"/initrd.img-*-${FLAVOUR} "${DESTDIR}"/initrd${NUMBER}.img
					sed -i -e "s/LIVE.*-${FLAVOUR}/live${NUMBER}/g" -e "s/vmlinuz-.*-${FLAVOUR}/vmlinuz${NUMBER}/g" -e "s/initrd.img-.*-${FLAVOUR}/initrd${NUMBER}.img/g" -e "s/LIVE/live/" binary/isolinux/isolinux.cfg
				done
			else
				mv "${DESTDIR}"/vmlinuz-*-${LIVE_KERNEL_FLAVOUR} "${DESTDIR}"/vmlinuz
				mv "${DESTDIR}"/initrd.img-*-${LIVE_KERNEL_FLAVOUR} "${DESTDIR}"/initrd.img
				sed -i -e "s/LIVE.*-${LIVE_KERNEL_FLAVOUR}/live/g" -e "s/vmlinuz-.*-${LIVE_KERNEL_FLAVOUR}/vmlinuz/g" -e "s/initrd.img-.*-${LIVE_KERNEL_FLAVOUR}/initrd.img/g" -e "s/LIVE/live/" binary/isolinux/isolinux.cfg
			fi
			;;

		net)
			# Copying syslinux
			cp chroot/usr/lib/syslinux/pxelinux.0 tftpboot

			# Install syslinux templates
			mkdir -p tftpboot/pxelinux.cfg
			cp -r "${LIVE_TEMPLATES}"/syslinux/* tftpboot/pxelinux.cfg
			mv tftpboot/pxelinux.cfg/pxelinux.cfg tftpboot/pxelinux.cfg/default
			sed -i -e 's#splash.rle#pxelinux.cfg/splash.rle#' tftpboot/pxelinux.cfg/isolinux.txt

			# Copying splash screen
			if [ -n "${LIVE_SYSLINUX_SPLASH}" ]
			then
				cp "${LIVE_SYSLINUX_SPLASH}" tftpboot/pxelinux.cfg/splash.rle
			fi

			# Configure syslinux templates
			sed -i -e "s#LIVE_KERNEL_LIVE#${LINUX}#" -e "s#LIVE_KERNEL_INSTALL#${LIVE_KERNEL_INSTALL}#" -e "s#LIVE_MEMTEST#${MEMTEST}#" tftpboot/pxelinux.cfg/default
			sed -i -e "s/LIVE_SERVER_ADDRESS/${LIVE_SERVER_ADDRESS}/" -e "s#LIVE_SERVER_PATH#${LIVE_SERVER_PATH}#" -e "s#LIVE_BOOTAPPEND#${LIVE_BOOTAPPEND}#" tftpboot/pxelinux.cfg/default
			sed -i -e "s/LIVE_DATE/`date +%Y%m%d`/" tftpboot/pxelinux.cfg/f1.txt
			sed -i -e "s/LIVE_VERSION/${VERSION}/" tftpboot/pxelinux.cfg/f10.txt

			# Remove unused files
			rm -f tftpboot/pxelinux.cfg/isolinux.cfg

			# Working arround syslinux 8.3 limitation
			if [ "`echo ${LIVE_KERNEL_FLAVOUR} | wc -w`" -gt "1" ]
			then
				for FLAVOUR in ${LIVE_KERNEL_FLAVOUR}
				do
					NUMBER=$(($NUMBER + 1))

					mv "${DESTDIR}"/vmlinuz-*-${FLAVOUR} "${DESTDIR}"/vmlinuz${NUMBER}
					mv "${DESTDIR}"/initrd.img-*-${FLAVOUR} "${DESTDIR}"/initrd${NUMBER}.img
					sed -i -e "s/LIVE.*-${FLAVOUR}/live${NUMBER}/g" -e "s/vmlinuz-.*-${FLAVOUR}/vmlinuz${NUMBER}/g" -e "s/initrd.img-.*-${FLAVOUR}/initrd${NUMBER}.img/g" -e "s/LIVE/live/" tftpboot/pxelive.cfg/default
				done
			else
				mv "${DESTDIR}"/vmlinuz-*-${LIVE_KERNEL_FLAVOUR} "${DESTDIR}"/vmlinuz
				mv "${DESTDIR}"/initrd.img-*-${LIVE_KERNEL_FLAVOUR} "${DESTDIR}"/initrd.img
				sed -i -e "s/LIVE.*-${LIVE_KERNEL_FLAVOUR}/live/g" -e "s/vmlinuz-.*-${LIVE_KERNEL_FLAVOUR}/vmlinuz/g" -e "s/initrd.img-.*-${LIVE_KERNEL_FLAVOUR}/initrd.img/g" -e "s/LIVE/live/" tftpboot/pxelinux.cfg/default
			fi
			;;

		usb|hdd)
			# Copying syslinux
			mkdir -p binary
			cp chroot/usr/lib/syslinux/isolinux.bin binary/syslinux.bin
			cp -r "${LIVE_TEMPLATES}"/syslinux/* binary
			mv binary/isolinux.cfg binary/syslinux.cfg
			mv binary/isolinux.txt binary/syslinux.txt
			sed -i -e "s/isolinux.txt/syslinux.txt/" binary/syslinux.cfg

			# Copying splash screen
			if [ -n "${LIVE_SYSLINUX_SPLASH}" ]
			then
				cp "${LIVE_SYSLINUX_SPLASH}" binary/splash.rle
			fi

			# Configure syslinux templates
			sed -i -e "s#LIVE_KERNEL_LIVE#${LINUX}#" -e "s#LIVE_KERNEL_INSTALL#${LIVE_KERNEL_INSTALL}#" -e "s#LIVE_MEMTEST#${MEMTEST}#" binary/syslinux.cfg
			sed -i -e "s#LIVE_BOOTAPPEND#${LIVE_BOOTAPPEND}#" binary/syslinux.cfg
			sed -i -e "s/LIVE_DATE/`date +%Y%m%d`/" binary/f1.txt
			sed -i -e "s/LIVE_VERSION/${VERSION}/" binary/f10.txt

			# Remove unused files
			rm -f binary/pxelinux.cfg

			# Working arround syslinux 8.3 limitation
			if [ "`echo ${LIVE_KERNEL_FLAVOUR} | wc -w`" -gt "1" ]
			then
				for FLAVOUR in ${LIVE_KERNEL_FLAVOUR}
				do
					NUMBER=$(($NUMBER + 1))

					mv "${DESTDIR}"/vmlinuz-*-${FLAVOUR} "${DESTDIR}"/vmlinuz${NUMBER}
					mv "${DESTDIR}"/initrd.img-*-${FLAVOUR} "${DESTDIR}"/initrd${NUMBER}.img
					sed -i -e "s/LIVE.*-${FLAVOUR}/live${NUMBER}/g" -e "s/vmlinuz-.*-${FLAVOUR}/vmlinuz${NUMBER}/g" -e "s/initrd.img-.*-${FLAVOUR}/initrd${NUMBER}.img/g" -e "s/LIVE/live/" binary/syslinux.cfg
				done
			else
				mv "${DESTDIR}"/vmlinuz-*-${LIVE_KERNEL_FLAVOUR} "${DESTDIR}"/vmlinuz
				mv "${DESTDIR}"/initrd.img-*-${LIVE_KERNEL_FLAVOUR} "${DESTDIR}"/initrd.img
				sed -i -e "s/LIVE.*-${LIVE_KERNEL_FLAVOUR}/live/g" -e "s/vmlinuz-.*-${LIVE_KERNEL_FLAVOUR}/vmlinuz/g" -e "s/initrd.img-.*-${LIVE_KERNEL_FLAVOUR}/initrd.img/g" -e "s/LIVE/live/" binary/syslinux.cfg
			fi
			;;
	esac

	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_syslinux
fi