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#!/bin/sh

# lh_bootstrap_debootstrap(1) - bootstrap a Debian system with debootstrap(8)
# 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="bootstrap a Debian system with debootstrap(8)"
HELP=""
USAGE="${PROGRAM} [--force]"

Arguments "${@}"

# Ensure that a system is built as root
lh_testroot

Echo_debug "Init ${PROGRAM}"

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

Breakpoint "bootstrap_debootstrap: Init"

if [ "${LH_BOOTSTRAP}" != "debootstrap" ]
then
	exit 0
fi

# Checking stage file
Check_stagefile .stage/bootstrap

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

# Creating chroot directory
if [ ! -d chroot ]
then
	mkdir -p chroot
fi

# Setting debootstrap options
if [ -n "${LIVE_ARCHITECTURE}" ]
then
	DEBOOTSTRAP_OPTIONS="${DEBOOTSTRAP_OPTIONS} --arch ${LIVE_ARCHITECTURE}"
fi

if [ -n "${LIVE_BOOTSTRAP_CONFIG}" ]
then
	LIVE_DEBOOTSTRAP_SCRIPT="/usr/lib/debootstrap/scripts/${LIVE_BOOTSTRAP_CONFIG}"
fi

if [ "${LH_VERBOSE}" = "true" ]
then
	DEBOOTSTRAP_OPTIONS="${DEBOOTSTRAP_OPTIONS} --verbose"
fi

if [ -x "/usr/sbin/debootstrap" ]
then
	for STAGE in ${LH_CACHE_STAGES}
	do
		if [ "${STAGE}" = "bootstrap" ] && [ -d cache/stages_bootstrap ]
		then
			# Restore old cache
			${LH_ROOT_COMMAND} cp -a cache/stages_bootstrap/* chroot

			if [ -n "${LH_ROOT_COMMAND}" ]
			then
				${LH_ROOT_COMMAND} chown -R `whoami`:`whoami` chroot
			fi

			# Creating stage file
			Create_stagefile .stage/bootstrap

			exit 0
		fi
	done

	if [ "${LH_CACHE_PACKAGES}" = "enabled" ]
	then
		if [ -d cache/packages_bootstrap ]
		then
			mkdir -p chroot/var/cache/apt/archives
			cp cache/packages_bootstrap/*.deb chroot/var/cache/apt/archives
		fi

		# Executing debootstrap (download-only)
		${LH_ROOT_COMMAND} debootstrap ${DEBOOTSTRAP_OPTIONS} --download-only "${LIVE_DISTRIBUTION}" chroot "${LIVE_MIRROR_BUILD}" "${LIVE_DEBOOTSTRAP_SCRIPT}"

		if [ -n "${LH_ROOT_COMMAND}" ]
		then
			${LH_ROOT_COMMAND} chown -R `whoami`:`whoami` chroot
		fi

		# Removing old cache
		if [ -d cache/packages_bootstrap ]
		then
			rm -f cache/packages_bootstrap/*.deb
		fi

		# Saving new cache
		if [ ! -d cache/packages_bootstrap ]
		then
			mkdir -p cache/packages_bootstrap
		fi

		cp chroot/var/cache/apt/archives/*.deb cache/packages_bootstrap
	fi

	# Executing debootstrap (regular run)
	${LH_ROOT_COMMAND} debootstrap ${DEBOOTSTRAP_OPTIONS} "${LIVE_DISTRIBUTION}" chroot "${LIVE_MIRROR_BUILD}" "${LIVE_DEBOOTSTRAP_SCRIPT}"

	if [ -n "${LH_ROOT_COMMAND}" ]
	then
		${LH_ROOT_COMMAND} chown -R `whoami`:`whoami` chroot
	fi

	# Removing bootstrap cache
	rm -f chroot/var/cache/apt/archives/*.deb

	# Saving new cache
	for STAGE in ${LH_CACHE_STAGES}
	do
		if [ "${STAGE}" = "bootstrap" ]
		then
			if [ -d cache/stages_bootstrap ]
			then
				rm -rf cache/stages_bootstrap
			fi

			${LH_ROOT_COMMAND} cp -a chroot cache/stages_bootstrap

			if [ -n "${LH_ROOT_COMMAND}" ]
			then
				${LH_ROOT_COMMAND} chown -R `whoami`:`whoami` cache/stages_bootstrap
			fi
		fi
	done

	# Creating stage file
	Create_stagefile .stage/bootstrap
else
	Echo_error "Can't process file /usr/bin/debootstrap (FIXME)"
	exit 1
fi