#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2006-2012 Daniel Baumann <daniel@debian.org>
##
## This program 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

# Including common functions
( . "${LIVE_BUILD}/scripts/build.sh" > /dev/null 2>&1 || true ) || . /usr/lib/live/build.sh

# Setting static variables
DESCRIPTION="$(Echo 'installs syslinux into binary')"
HELP=""
USAGE="${PROGRAM} [--force]"

Arguments "${@}"

# Reading configuration files
Read_conffiles config/all config/common config/bootstrap config/chroot config/binary config/source
Set_defaults

if [ "${LB_BOOTLOADER}" != "syslinux" ]
then
	exit 0
fi

Echo_message "Begin installing syslinux..."

# Requiring stage file
Require_stagefile .build/config .build/bootstrap

# Checking stage file
Check_stagefile .build/binary_syslinux

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

# Check architecture
Check_architectures amd64 i386
Check_crossarchitectures

# Assembling image specifics
case "${LB_BINARY_IMAGES}" in
	iso*)
		_BOOTLOADER="isolinux"

		case "${LB_MODE}" in
			progress)
				_TARGET="binary/boot"
				;;

			*)
				_TARGET="binary/isolinux"
				;;
		esac
		;;

	netboot)
		_BOOTLOADER="pxelinux"
		_TARGET="tftpboot"
		;;

	hdd*|*)
		_BOOTLOADER="syslinux"

		case "${LB_MODE}" in
			progress)
				_TARGET="binary/boot"
				;;

			*)
				_TARGET="binary/syslinux"
				;;
		esac
		;;
esac

# Checking depends
case "${LB_BUILD_WITH_CHROOT}" in
	true)
		Check_package chroot/usr/bin/syslinux syslinux
		Check_package chroot/usr/lib/syslinux syslinux-common

		case "${LB_SYSLINUX_THEME}" in
			live-build)
				Check_package chroot/usr/bin/rsvg librsvg2-bin
				;;

			*)
				Check_package chroot/usr/share/syslinux/themes/${LB_SYSLINUX_THEME} syslinux-themes-${LB_SYSLINUX_THEME}

				case "${LB_MODE}" in
					ubuntu)
						Check_package chroot/usr/share/gfxboot-theme-ubuntu/bootlogo.tar.gz gfxboot-theme-ubuntu
						;;
				esac
				;;
		esac
		;;

	false)
		if [ ! -e /usr/bin/syslinux ]
		then
			# syslinux
			Echo_error "/usr/bin/syslinux - no such file."
			exit 1
		fi

		if [ ! -e /usr/lib/syslinux ]
		then
			# syslinux-common
			Echo_error "/usr/lib/syslinux - no such directory"
			exit 1
		fi

		case "${LB_SYSLINUX_THEME}" in
			live-build)
				if [ ! -e /usr/bin/rsvg ]
				then
					# librsvg2-bin
					Echo_error "/usr/bin/rsvg - no such file"
					exit 1
				fi
				;;

			*)
				if [ ! -e /usr/share/syslinux/themes/${LB_SYSLINUX_THEME} ]
				then
					# syslinux-theme
					Echo_error "/usr/share/syslinux/themes/${LB_SYSLINUX_THEME} - no such directory."
					exit 1
				fi
				;;
		esac
		;;
esac

# Restoring cache
Restore_cache cache/packages.binary

# Installing depends
Install_package

# FIXME: cleanup, unify, and extend themes for ${_BOOTLOADER}-live and ${_BOOTLOADER}-installer
if [ "${LB_SYSLINUX_THEME}" = "live-build" ]
then
	if [ -e "config/bootloaders/${_BOOTLOADER}" ]
	then
		# Internal local copy
		_SOURCE="config/bootloaders/${_BOOTLOADER}"
	else
		# Internal system copy
		if [ -n "${LIVE_BUILD}" ]
		then
			_SOURCE="${LIVE_BUILD}/bootloaders/${_BOOTLOADER}"
		else
			_SOURCE="/usr/share/live/build/bootloaders/${_BOOTLOADER}"
		fi
	fi
else
	# External copy from chroot or system
	_SOURCE="/usr/share/syslinux/themes/${LB_SYSLINUX_THEME}/${_BOOTLOADER}-live"
fi

# Copying files
case "${LB_BUILD_WITH_CHROOT}" in
	true)
		mkdir -p $(dirname ${_TARGET})

		# Copy in two steps since the theme can have absolute symlinks and would therefore not be dereferenced correctly
		if [ "${LB_SYSLINUX_THEME}" = "live-build" ]
		then
			cp -a ${_SOURCE} chroot/root
			Chroot chroot cp -aL /root/$(basename ${_SOURCE}) /root/$(basename ${_SOURCE}).tmp
			rm -rf chroot/$(basename ${_SOURCE})
		else
			Chroot chroot cp -aL ${_SOURCE} /root/$(basename ${_SOURCE}).tmp
		fi

		case "${LB_MODE}" in
			ubuntu)
				Chroot chroot "tar xfz /usr/share/gfxboot-theme-ubuntu/bootlogo.tar.gz -C /root/$(basename ${_SOURCE}).tmp"
				;;
		esac

		mv chroot/root/$(basename ${_SOURCE}).tmp ${_TARGET}
		;;

	false)
		mkdir -p ${_TARGET}

		cp -aL ${_SOURCE}/* ${_TARGET}

		case "${LB_MODE}" in
			ubuntu)
				tar xfz /usr/share/gfxboot-theme-ubuntu/bootlogo.tar.gz -C ${_TARGET}
				;;
		esac
		;;
esac

# Configuring files
if [ -e "${_TARGET}/live.cfg.in" ]
then
	# This is all rather suboptimal.. needs prettifying at some point
	_FLAVOURS="$(echo ${LB_LINUX_FLAVOURS} | wc -w)"

	case "${_FLAVOURS}" in
		1)
			mv binary/live/vmlinuz-* binary/live/vmlinuz
			mv binary/live/initrd.img-* binary/live/initrd.img

			sed -e "s|@FLAVOUR@|${LB_LINUX_FLAVOUR}|g" \
			    -e "s|@KERNEL@|/live/vmlinuz|g" \
			    -e "s|@INITRD@|/live/initrd.img|g" \
			    -e "s|@LB_BOOTAPPEND_LIVE@|${LB_BOOTAPPEND_LIVE}|g" \
			    -e "s|@LB_BOOTAPPEND_FAILSAFE@|${LB_BOOTAPPEND_FAILSAFE}|g" \
			"${_TARGET}/live.cfg.in" >> "${_TARGET}/live.cfg"

			rm -f "${_TARGET}/live.cfg.in"
			;;

		*)
			_NUMBER="0"

			for _FLAVOUR in ${LB_LINUX_FLAVOURS}
			do
				_NUMBER="$((${_NUMBER} + 1))"

				mv binary/live/vmlinuz-*-${_FLAVOUR} binary/live/vmlinuz${_NUMBER}
				mv binary/live/initrd.img-*-${_FLAVOUR} binary/live/initrd${_NUMBER}.img

				sed -e "s|@FLAVOUR@|${_FLAVOUR}|g" \
				    -e "s|@KERNEL@|/live/vmlinuz${_NUMBER}|g" \
				    -e "s|@INITRD@|/live/initrd${_NUMBER}.img|g" \
				    -e "s|@LB_BOOTAPPEND_LIVE@|${LB_BOOTAPPEND_LIVE}|g" \
				    -e "s|@LB_BOOTAPPEND_FAILSAFE@|${LB_BOOTAPPEND_FAILSAFE}|g" \
				"${_TARGET}/live.cfg.in" >> "${_TARGET}/live.cfg"
			done

			rm -f "${_TARGET}/live.cfg.in"
			;;
	esac
elif [ -e "${_TARGET}/live.cfg" ]
then
	sed -i  -e "s|@LB_BOOTAPPEND_LIVE@|${LB_BOOTAPPEND_LIVE}|g" \
		-e "s|@LB_BOOTAPPEND_FAILSAFE@|${LB_BOOTAPPEND_FAILSAFE}|g" \
	${_TARGET}/live.cfg

	case "${LB_INITRAMFS}" in
		casper)
			sed -i -e "s|boot=live|boot=casper|" \
			    ${_SUFFIX}/live.cfg
			;;
	esac
fi

if [ -e ${_TARGET}/install.cfg ]
then
	sed -i -e "s|@LB_BOOTAPPEND_INSTALL@|${LB_BOOTAPPEND_INSTALL}|g" \
	${_TARGET}/install.cfg
fi

if [ -e "${_TARGET}/splash.svg.in" ]
then
	case "${LB_MODE}" in
		progress)
			_PROJECT="Progress Linux"

			if ls config/package-lists/client-gnome.list*
			then
				_DESCRIPTION="Client GNOME"
			elif ls config/package-lists/client-lxde.list* > /dev/null 2>&1
			then
				_DESCRIPTION="Client LXDE"
			elif ls config/package-lists/server-lxc.list* > /dev/null 2>&1
			then
				_DESCRIPTION="Server LXC"
			else
				_DESCRIPTION="Standard"
			fi
			;;

		*)
			_PROJECT="Debian GNU/Linux"
			_DESCRIPTION=""
			;;

	esac

	eval _VERSION="$`echo RELEASE_${LB_DISTRIBUTION}`"
	_DISTRIBUTION="${LB_DISTRIBUTION}"
	_ARCHITECTURE="${LB_ARCHITECTURES}"
	_DATE=$(date -R)
	_YEAR="$(date +%Y)"
	_MONTH="$(date +%m)"
	_DAY="$(date +%d)"
	_HOUR="$(date +%H)"
	_MINUTE="$(date +%M)"
	_SECOND="$(date +%S)"
	_LINUX_VERSIONS="$(for _LINUX in chroot/boot/vmlinuz-* ; do chroot chroot apt-cache policy $(basename ${_LINUX} | sed -e 's|vmlinuz-|linux-image-|') | awk '/Installed: / { print $2 }' ; done | sort -u)"
	_LIVE_BUILD_VERSION="$(lb --version)"
	_LIVE_BOOT_VERSION="$(chroot chroot apt-cache policy live-boot | awk '/Installed: / { print $2 }')"
	_LIVE_CONFIG_VERSION="$(chroot chroot apt-cache policy live-config | awk '/Installed: / { print $2 }')"
	_LIVE_TOOLS_VERSION="$(chroot chroot apt-cache policy live-tools | awk '/Installed: / { print $2 }')"

	sed	-e "s|@PROJECT@|${_PROJECT}|g" \
		-e "s|@DISTRIBUTION@|${_DISTRIBUTION}|g" \
		-e "s|@VERSION@|${_VERSION}|g" \
		-e "s|@ARCHITECTURE@|${_ARCHITECTURE}|g" \
		-e "s|@DESCRIPTION@|${_DESCRIPTION}|g" \
		-e "s|@DATE@|${_DATE}|g" \
		-e "s|@YEAR@|${_YEAR}|g" \
		-e "s|@MONTH@|${_MONTH}|g" \
		-e "s|@DAY@|${_DAY}|g" \
		-e "s|@HOUR@|${_HOUR}|g" \
		-e "s|@MINUTE@|${_MINUTE}|g" \
		-e "s|@SECOND@|${_SECOND}|g" \
		-e "s|@LINUX_VERSIONS@|${_LINUX_VERSIONS}|g" \
		-e "s|@LIVE_BUILD_VERSION@|${_LIVE_BUILD_VERSION}|g" \
		-e "s|@LIVE_BOOT_VERSION@|${_LIVE_BOOT_VERSION}|g" \
		-e "s|@LIVE_CONFIG_VERSION@|${_LIVE_CONFIG_VERSION}|g" \
		-e "s|@LIVE_TOOLS_VERSION@|${_LIVE_TOOLS_VERSION}|g" \
	"${_TARGET}/splash.svg.in" > "${_TARGET}/splash.svg"

	case "${LB_BUILD_WITH_CHROOT}" in
		true)
			cp "${_TARGET}/splash.svg" chroot
			Chroot chroot "rsvg --format png --height 480 --width 640 splash.svg splash.png"
			mv chroot/splash.png "${_TARGET}"
			rm -f chroot/splash.svg
			;;

		false)
			rsvg --format png --height 480 --width 640 "${_TARGET}/splash.svg" "${_TARGET}/splash.png"
			;;
	esac

	rm -f "${_TARGET}/splash.svg.in" "${_TARGET}/splash.svg"
fi

case "${LB_MODE}" in
	progress)
		for _FILE in "${_TARGET}/isolinux.bin" "${_TARGET}/isolinux.cfg" "${_TARGET}/syslinux.cfg"
		do
			if [ -e "${_FILE}" ]
			then
				mv "${_FILE}" "${_TARGET}/$(echo ${_FILE} | sed -e 's|.*linux|boot|')"
			fi
		done
		;;
esac

# Hack around the removal of support in gfxboot for reading from outside
# the bootlogo archive.  This makes customisation harder and is not ideal.
tmpdir="$(mktemp -d)"
(cd "$tmpdir" && cpio -i) < ${_TARGET}/bootlogo
cp -a -f	${_TARGET}/*.fnt \
		${_TARGET}/*.hlp \
		${_TARGET}/*.jpg \
		${_TARGET}/*.pcx \
		${_TARGET}/*.tr \
		${_TARGET}/*.cfg \
		$(test -e ${_TARGET}/lang && echo ${_TARGET}/lang) \
		${_TARGET}/langlist \
		"$tmpdir/" || true
(cd "$tmpdir" && ls -1 | cpio --quiet -o) > ${_TARGET}/bootlogo
rm -rf "$tmpdir"

case "${LB_BUILD_WITH_CHROOT}" in
	true)
		# Saving cache
		Save_cache cache/packages.binary

		# Removing depends
		Remove_package
		;;
esac

# Creating stage file
Create_stagefile .build/binary_syslinux