#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2016-2020 The Debian Live team
## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
##
## 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
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh

# Setting static variables
DESCRIPTION="Create configuration for live-build(7)"
USAGE="${PROGRAM} [--apt apt|apt-get|aptitude]\n\
\t    [--apt-ftp-proxy URL]\n\
\t    [--apt-http-proxy URL]\n\
\t    [--apt-indices true|false]\n\
\t    [--apt-options OPTION|\"OPTIONS\"]\n\
\t    [--apt-pipeline DEPTH]\n\
\t    [--apt-recommends true|false]\n\
\t    [--apt-secure true|false]\n\
\t    [--apt-source-archives true|false]\n\
\t    [--aptitude-options OPTION|\"OPTIONS\"]\n\
\t    [-a|--architecture ARCHITECTURE]\n\
\t    [--archive-areas ARCHIVE_AREA|\"ARCHIVE_AREAS\"]\n\
\t    [--backports true|false]\n\
\t    [--binary-filesystem fat16|fat32|ext2|ext3|ext4|ntfs]\n\
\t    [-b|--binary-image iso|iso-hybrid|netboot|tar|hdd]\n\
\t    [--bootappend-install PARAMETER|\"PARAMETERS\"]\n\
\t    [--bootappend-live PARAMETER|\"PARAMETERS\"]\n\
\t    [--bootappend-live-failsafe PARAMETER|\"PARAMETERS\"]\n\
\t    [--bootloaders grub-legacy|grub-pc|syslinux|grub-efi|\"BOOTLOADERS\"]\n\
\t    [--bootstrap-qemu-arch ARCH]\n\
\t    [--bootstrap-qemu-exclude PACKAGE|\"PACKAGES\"]\n\
\t    [--bootstrap-qemu-static PATH]\n\
\t    [--breakpoints]\n\
\t    [--build-with-chroot true|false]\n\
\t    [--cache true|false]\n\
\t    [--cache-indices true|false]\n\
\t    [--cache-packages true|false]\n\
\t    [--cache-stages STAGE|\"STAGES\"]\n\
\t    [--checksums md5|sha1|sha224|sha256|sha384|sha512|none]\n\
\t    [--chroot-filesystem ext2|ext3|ext4|squashfs|jffs2|none]\n\
\t    [--chroot-squashfs-compression-level LEVEL]\n\
\t    [--chroot-squashfs-compression-type gzip|lzma|lzo|lz4|xz|zstd]\n\
\t    [--clean]\n\
\t    [--color]\n\
\t    [--compression bzip2|gzip|lzip|xz|none]\n\
\t    [-c|--conffile FILE]\n\
\t    [--config GIT_URL::GIT_BRANCH]\n\
\t    [--debconf-frontend dialog|editor|noninteractive|readline]\n\
\t    [--debconf-priority low|medium|high|critical]\n\
\t    [--debian-installer cdrom|netinst|netboot|businesscard|live|none]\n\
\t    [--debian-installer-distribution daily|CODENAME]\n\
\t    [--debian-installer-gui true|false]\n\
\t    [--debian-installer-preseedfile FILE|URL]\n\
\t    [--debootstrap-options OPTION|\"OPTIONS\"]\n\
\t    [--debootstrap-script SCRIPT]\n\
\t    [--debug]\n\
\t    [-d|--distribution CODENAME]\n\
\t    [--distribution-binary CODENAME]\n\
\t    [--distribution-chroot CODENAME]\n\
\t    [--dm-verity]\n\
\t    [--dm-verity-fec NB_ROOTS]\n\
\t    [--dm-verity-sign SIGN_SCRIPT]\n\
\t    [--dump]\n\
\t    [--firmware-binary true|false]\n\
\t    [--firmware-chroot true|false]\n\
\t    [--force]\n\
\t    [--gzip-options OPTION|\"OPTIONS\"]\n\
\t    [--hdd-label LABEL]\n\
\t    [--hdd-partition-start START]\n\
\t    [--hdd-size SIZE]\n\
\t    [--ignore-system-defaults]\n\
\t    [--image-name NAME]\n\
\t    [--initramfs none|live-boot]\n\
\t    [--initramfs-compression bzip2|gzip|lzma]\n\
\t    [--initsystem sysvinit|systemd|none]\n\
\t    [--interactive true|shell|x11|xnest|false]\n\
\t    [--iso-application NAME]\n\
\t    [--iso-preparer NAME]\n\
\t    [--iso-publisher NAME]\n\
\t    [--iso-volume NAME]\n\
\t    [--jffs2-eraseblock SIZE]\n\
\t    [--keyring-packages PACKAGE|\"PACKAGES\"]\n\
\t    [-k|--linux-flavours FLAVOUR|\"FLAVOURS\"]\n\
\t    [--linux-packages PACKAGE|\"PACKAGES\"]\n\
\t    [--loadlin true|false]\n\
\t    [--memtest memtest86+|memtest86|none]\n\
\t    [--mirror-binary URL]\n\
\t    [--mirror-binary-security URL]\n\
\t    [--mirror-bootstrap URL]\n\
\t    [--mirror-chroot URL]\n\
\t    [--mirror-chroot-security URL]\n\
\t    [--mirror-debian-installer URL]\n\
\t    [--mode debian]\n\
\t    [--net-root-path PATH]\n\
\t    [--net-tarball true|false]\n\
\t    [--no-color]\n\
\t    [--onie true|false]\n\
\t    [--onie-kernel-cmdline OPTION|\"OPTIONS\"]\n\
\t    [--parent-archive-areas ARCHIVE_AREA|\"ARCHIVE_AREAS\"]\n\
\t    [--parent-debian-installer-distribution CODENAME]\n\
\t    [--parent-distribution CODENAME]\n\
\t    [--parent-distribution-binary CODENAME]\n\
\t    [--parent-distribution-chroot CODENAME]\n\
\t    [--parent-mirror-binary URL]\n\
\t    [--parent-mirror-binary-security URL]\n\
\t    [-m|--parent-mirror-bootstrap URL]\n\
\t    [--parent-mirror-chroot URL]\n\
\t    [--parent-mirror-chroot-security URL]\n\
\t    [--parent-mirror-debian-installer URL]\n\
\t    [--quiet]\n\
\t    [--security true|false]\n\
\t    [--source true|false]\n\
\t    [-s|--source-images iso|netboot|tar|hdd]\n\
\t    [--swap-file-path PATH]\n\
\t    [--swap-file-size MB]\n\
\t    [--system live|normal]\n\
\t    [--uefi-secure-boot auto|enable|disable]\n\
\t    [--updates true|false]\n\
\t    [--utc-time true|false]\n\
\t    [--validate]\n\
\t    [--verbose]\n\
\t    [--win32-loader true|false]\n\
\t    [--zsync true|false]"


Local_arguments ()
{
	local LONG_OPTIONS
	LONG_OPTIONS="
		apt:,apt-ftp-proxy:,apt-http-proxy:,apt-indices:,aptitude-options:,
		apt-options:,apt-pipeline:,apt-recommends:,apt-secure:,
		apt-source-archives:,architecture:,architectures:,archive-areas:,
		backports:,binary-filesystem:,binary-image:,binary-images:,
		bootappend-install:,bootappend-live:,bootappend-live-failsafe:,
		bootloader:,bootloaders:,bootstrap-qemu-arch:,bootstrap-qemu-exclude:,
		bootstrap-qemu-static:,breakpoints,build-with-chroot:,
		cache:,cache-indices:,cache-packages:,cache-stages:,checksums:,
		chroot-filesystem:,chroot-squashfs-compression-level:,
		chroot-squashfs-compression-type:,clean,color,compression:,conffile:,
		config:,debconf-frontend:,debconf-priority:,debian-installer:,
		debian-installer-distribution:,debian-installer-gui:,
		debian-installer-preseedfile:,debootstrap-options:,debootstrap-script:,
		debug,dm-verity,dm-verity-fec:,dm-verity-sign:,
		distribution:,distribution-binary:,distribution-chroot:,dump,
		fdisk:,firmware-binary:,firmware-chroot:,force,
		grub-splash:,gzip-options:,
		hdd-label:,hdd-partition-start:,hdd-size:,help,
		ignore-system-defaults,image-name:,initramfs:,initramfs-compression:,
		initsystem:,interactive:,iso-application:,isohybrid-options:,
		iso-preparer:,iso-publisher:,iso-volume:,
		jffs2-eraseblock:,
		keyring-packages:,
		linux-flavours:,linux-packages:,loadlin:,losetup:,
		memtest:,mirror-binary:,mirror-binary-security:,mirror-bootstrap:,
		mirror-chroot:,mirror-chroot-security:,mirror-debian-installer:,mode:,
		net-cow-filesystem:,net-cow-mountoptions:,net-cow-path:,
		net-cow-server:,net-root-filesystem:,net-root-mountoptions:,
		net-root-path:,net-root-server:,net-tarball:,no-color,
		onie:,onie-kernel-cmdline:,
		parent-archive-areas:,parent-debian-installer-distribution:,
		parent-distribution:,parent-distribution-binary:,
		parent-distribution-chroot:,parent-mirror-binary:,
		parent-mirror-binary-security:,parent-mirror-bootstrap:,
		parent-mirror-chroot:,parent-mirror-chroot-security:,
		parent-mirror-debian-installer:,
		quiet,
		security:,source:,source-images:,swap-file-path:,swap-file-size:,system:,
		tasksel:,
		uefi-secure-boot:,updates:,utc-time:,usage,
		validate,verbose,version,
		win32-loader:,
		zsync:"
	# Remove spaces added by indentation
	LONG_OPTIONS="$(echo ${LONG_OPTIONS} | tr -d ' ')"

	local ARGUMENTS
	local ERR=0
	ARGUMENTS="$(getopt --longoptions ${LONG_OPTIONS} --name="${PROGRAM}" --options a:d:m:k:b:s:c:huv --shell sh -- "${@}")" || ERR=$?

	if [ $ERR -eq 1 ]; then
		Echo_error "invalid arguments"
		exit 1
	elif [ $ERR -ne 0 ]; then
		Echo_error "getopt failure"
		exit 1
	fi

	eval set -- "${ARGUMENTS}"

	while true
	do
		case "${1}" in

			# Config script specific options

			--clean)
				_CLEAN="true"
				shift
				;;

			--config)
				_CONFIG="${2}"
				shift 2
				;;

			-c|--conffile)
				_CONFFILE="${2}"
				shift 2
				;;

			--dump)
				# Dump version
				Echo "This is live-build version %s" "${VERSION}"
				if command -v dpkg-query >/dev/null; then
					Echo "Installed version reported by dpkg is %s" "$(dpkg-query -f='${Version}' --show live-build)"
				fi

				# Dump conffile contents
				Print_conffiles $(Common_conffiles)

				# Dump contents of directories that contain text files
				local DIRECTORY
				for DIRECTORY in config/package-lists config/apt config/preseed config/rootfs
				do
					if Find_files "${DIRECTORY}"
					then
						Echo_file "${DIRECTORY}"/*
					fi
				done

				# Dump directory listings of all directories under config/
				for DIRECTORY in $(find config/ -mindepth 1 -maxdepth 1 -type d)
				do
					if Find_files "${DIRECTORY}"
					then
						ls -lR "${DIRECTORY}" | while read LINE
						do
							echo "${DIRECTORY}: ${LINE}"
						done
					fi
				done

				exit 0
				;;

			--ignore-system-defaults)
				_IGNORE_SYSTEM_DEFAULTS="true"
				shift
				;;

			--validate)
				_VALIDATE_MODE="true"
				shift
				;;

			# General options

			--breakpoints|--debug|--force|-h|--help|--quiet|-u|--usage|--verbose|-v|--version)
				Handle_common_option "${1}"
				shift
				;;

			--color)
				_COLOR="true"
				shift
				;;

			--no-color)
				_COLOR="false"
				shift
				;;

			# Build config options

			--apt)
				LB_APT="${2}"
				shift 2
				;;

			--apt-ftp-proxy)
				LB_APT_FTP_PROXY="${2}"
				shift 2
				;;

			--apt-http-proxy)
				LB_APT_HTTP_PROXY="${2}"
				shift 2
				;;

			--apt-indices)
				LB_APT_INDICES="${2}"
				shift 2
				;;

			--apt-options)
				APT_OPTIONS="${2}"
				shift 2
				;;

			--apt-pipeline)
				LB_APT_PIPELINE="${2}"
				shift 2
				;;

			--apt-recommends)
				LB_APT_RECOMMENDS="${2}"
				shift 2
				;;

			--apt-secure)
				LB_APT_SECURE="${2}"
				shift 2
				;;

			--apt-source-archives)
				LB_APT_SOURCE_ARCHIVES="${2}"
				shift 2
				;;

			--aptitude-options)
				APTITUDE_OPTIONS="${2}"
				shift 2
				;;

			-a|--architecture|--architectures)
				LB_ARCHITECTURE="${2}"
				shift 2
				;;

			--archive-areas)
				LB_ARCHIVE_AREAS="${2}"
				shift 2
				;;

			--backports)
				LB_BACKPORTS="${2}"
				shift 2
				;;

			--binary-filesystem)
				LB_BINARY_FILESYSTEM="${2}"
				shift 2
				;;

			-b|--binary-image|--binary-images)
				LB_IMAGE_TYPE="${2}"
				shift 2
				;;

			--bootappend-install)
				LB_BOOTAPPEND_INSTALL="${2}"
				shift 2
				;;

			--bootappend-live)
				LB_BOOTAPPEND_LIVE="${2}"
				shift 2
				;;

			--bootappend-live-failsafe)
				LB_BOOTAPPEND_LIVE_FAILSAFE="${2}"
				shift 2
				;;

			--bootloaders|--bootloader)
				# This will be split up into BIOS and EFI selections by `Prepare_config()`
				LB_BOOTLOADERS="${2}"
				shift 2
				;;

			--bootstrap-qemu-arch)
				LB_BOOTSTRAP_QEMU_ARCHITECTURE="${2}"
				shift 2
				;;

			--bootstrap-qemu-exclude)
				LB_BOOTSTRAP_QEMU_EXCLUDE="${2}"
				shift 2
				;;

			--bootstrap-qemu-static)
				LB_BOOTSTRAP_QEMU_STATIC="${2}"
				shift 2
				;;

			--build-with-chroot)
				LB_BUILD_WITH_CHROOT="${2}"
				shift 2
				;;

			--cache)
				LB_CACHE="${2}"
				shift 2
				;;

			--cache-indices)
				LB_CACHE_INDICES="${2}"
				shift 2
				;;

			--cache-packages)
				LB_CACHE_PACKAGES="${2}"
				shift 2
				;;

			--cache-stages)
				LB_CACHE_STAGES="${2}"
				shift 2
				;;

			--checksums)
				LB_CHECKSUMS="${2}"
				shift 2
				;;

			--chroot-filesystem)
				LB_CHROOT_FILESYSTEM="${2}"
				shift 2
				;;

			--chroot-squashfs-compression-level)
				LB_CHROOT_SQUASHFS_COMPRESSION_LEVEL="${2}"
				shift 2
				;;

			--chroot-squashfs-compression-type)
				LB_CHROOT_SQUASHFS_COMPRESSION_TYPE="${2}"
				shift 2
				;;

			--compression)
				LB_COMPRESSION="${2}"
				shift 2
				;;

			--debconf-frontend)
				LB_DEBCONF_FRONTEND="${2}"
				shift 2
				;;

			--debconf-priority)
				LB_DEBCONF_PRIORITY="${2}"
				shift 2
				;;

			--debian-installer)
				LB_DEBIAN_INSTALLER="${2}"
				shift 2
				;;

			--debian-installer-distribution)
				LB_DEBIAN_INSTALLER_DISTRIBUTION="${2}"
				shift 2
				;;

			--debian-installer-gui)
				LB_DEBIAN_INSTALLER_GUI="${2}"
				shift 2
				;;

			--debian-installer-preseedfile)
				LB_DEBIAN_INSTALLER_PRESEEDFILE="${2}"
				shift 2
				;;

			--debootstrap-options)
				DEBOOTSTRAP_OPTIONS="${2}"
				shift 2
				;;

			--debootstrap-script)
				DEBOOTSTRAP_SCRIPT="${2}"
				shift 2
				;;

			-d|--distribution)
				LB_DISTRIBUTION="${2}"
				shift 2
				;;

			--distribution-binary)
				LB_DISTRIBUTION_BINARY="${2}"
				shift 2
				;;

			--distribution-chroot)
				LB_DISTRIBUTION_CHROOT="${2}"
				shift 2
				;;

			--dm-verity)
				LB_DM_VERITY="true"
				shift
				;;

			--dm-verity-fec)
				LB_DM_VERITY_FEC_ROOTS="${2}"
				shift 2
				;;

			--dm-verity-sign)
				LB_DM_VERITY_SIGN="${2}"
				shift 2
				;;

			--fdisk)
				Echo_warning "--fdisk is an obsolete option"
				shift 2
				;;

			--firmware-binary)
				LB_FIRMWARE_BINARY="${2}"
				shift 2
				;;

			--firmware-chroot)
				LB_FIRMWARE_CHROOT="${2}"
				shift 2
				;;

			--grub-splash)
				Echo_warning "--grub-splash is an obsolete option"
				shift 2
				;;

			--gzip-options)
				GZIP_OPTIONS="${2}"
				shift 2
				;;

			--hdd-label)
				LB_HDD_LABEL="${2}"
				shift 2
				;;

			--hdd-partition-start)
				LB_HDD_PARTITION_START="${2}"
				shift 2
				;;

			--hdd-size)
				LB_HDD_SIZE="${2}"
				shift 2
				;;

			--image-name)
				LB_IMAGE_NAME="${2}"
				shift 2
				;;

			--initramfs)
				LB_INITRAMFS="${2}"
				shift 2
				;;

			--initramfs-compression)
				LB_INITRAMFS_COMPRESSION="${2}"
				shift 2
				;;

			--initsystem)
				LB_INITSYSTEM="${2}"
				shift 2
				;;

			--interactive)
				LB_INTERACTIVE="${2}"
				shift 2
				;;

			--iso-application)
				LB_ISO_APPLICATION="${2}"
				shift 2
				;;

			--iso-preparer)
				LB_ISO_PREPARER="${2}"
				shift 2
				;;

			--iso-publisher)
				LB_ISO_PUBLISHER="${2}"
				shift 2
				;;

			--iso-volume)
				LB_ISO_VOLUME="${2}"
				shift 2
				;;

			--isohybrid-options)
				Echo_warning "--isohybrid-options is an obsolete option"
				shift 2
				;;

			--jffs2-eraseblock)
				LB_JFFS2_ERASEBLOCK="${2}"
				shift 2
				;;

			--keyring-packages)
				LB_KEYRING_PACKAGES="${2}"
				shift 2
				;;

			-k|--linux-flavours)
				LB_LINUX_FLAVOURS_WITH_ARCH="${2}"
				shift 2
				;;

			--linux-packages)
				LB_LINUX_PACKAGES="${2}"
				shift 2
				;;

			--loadlin)
				LB_LOADLIN="${2}"
				shift 2
				;;

			--losetup)
				Echo_warning "--losetup is an obsolete option"
				shift 2
				;;

			--memtest)
				LB_MEMTEST="${2}"
				shift 2
				;;

			--mirror-binary)
				LB_MIRROR_BINARY="${2}"
				shift 2
				;;

			--mirror-binary-security)
				LB_MIRROR_BINARY_SECURITY="${2}"
				shift 2
				;;

			--mirror-bootstrap)
				LB_MIRROR_BOOTSTRAP="${2}"
				shift 2
				;;

			--mirror-chroot)
				LB_MIRROR_CHROOT="${2}"
				shift 2
				;;

			--mirror-chroot-security)
				LB_MIRROR_CHROOT_SECURITY="${2}"
				shift 2
				;;

			--mirror-debian-installer)
				LB_MIRROR_DEBIAN_INSTALLER="${2}"
				shift 2
				;;

			--mode)
				LB_MODE="${2}"
				shift 2
				;;

			--net-cow-filesystem)
				Echo_warning "--net-cow-filesystem is an obsolete option"
				shift 2
				;;

			--net-cow-mountoptions)
				Echo_warning "--net-cow-mountoptions is an obsolete option"
				shift 2
				;;

			--net-cow-path)
				Echo_warning "--net-cow-path is an obsolete option"
				shift 2
				;;

			--net-cow-server)
				Echo_warning "--net-cow-server is an obsolete option"
				shift 2
				;;

			--net-root-filesystem)
				Echo_warning "--net-root-filesystem is an obsolete option"
				shift 2
				;;

			--net-root-mountoptions)
				Echo_warning "--net-root-mountoptions is an obsolete option"
				shift 2
				;;

			--net-root-path)
				Echo_warning "--net-root-path is an obsolete option"
				shift 2
				;;

			--net-root-server)
				Echo_warning "--net-root-server is an obsolete option"
				shift 2
				;;

			--net-tarball)
				LB_NET_TARBALL="${2}"
				shift 2
				;;

			--onie)
				LB_ONIE="${2}"
				shift 2
				;;

			--onie-kernel-cmdline)
				LB_ONIE_KERNEL_CMDLINE="${2}"
				shift 2
				;;

			--parent-archive-areas)
				LB_PARENT_ARCHIVE_AREAS="${2}"
				shift 2
				;;

			--parent-debian-installer-distribution)
				LB_PARENT_DEBIAN_INSTALLER_DISTRIBUTION="${2}"
				shift 2
				;;

			--parent-distribution)
				LB_PARENT_DISTRIBUTION="${2}"
				shift 2
				;;

			--parent-distribution-binary)
				LB_PARENT_DISTRIBUTION_BINARY="${2}"
				shift 2
				;;

			--parent-distribution-chroot)
				LB_PARENT_DISTRIBUTION_CHROOT="${2}"
				shift 2
				;;

			--parent-mirror-binary)
				LB_PARENT_MIRROR_BINARY="${2}"
				shift 2
				;;

			--parent-mirror-binary-security)
				LB_PARENT_MIRROR_BINARY_SECURITY="${2}"
				shift 2
				;;

			-m|--parent-mirror-bootstrap)
				LB_PARENT_MIRROR_BOOTSTRAP="${2}"
				shift 2
				;;

			--parent-mirror-chroot)
				LB_PARENT_MIRROR_CHROOT="${2}"
				shift 2
				;;

			--parent-mirror-chroot-security)
				LB_PARENT_MIRROR_CHROOT_SECURITY="${2}"
				shift 2
				;;

			--parent-mirror-debian-installer)
				LB_PARENT_MIRROR_DEBIAN_INSTALLER="${2}"
				shift 2
				;;

			--security)
				LB_SECURITY="${2}"
				shift 2
				;;

			--source)
				LB_SOURCE="${2}"
				shift 2
				;;

			-s|--source-images)
				LB_SOURCE_IMAGES="${2}"
				shift 2
				;;

			--swap-file-path)
				LB_SWAP_FILE_PATH="${2}"
				shift 2
				;;

			--swap-file-size)
				LB_SWAP_FILE_SIZE="${2}"
				shift 2
				;;

			--system)
				LB_SYSTEM="${2}"
				shift 2
				;;

			--tasksel)
				Echo_warning "--tasksel is an obsolete option"
				shift 2
				;;

			--uefi-secure-boot)
				LB_UEFI_SECURE_BOOT="${2}"
				shift 2
				;;

			--updates)
				LB_UPDATES="${2}"
				shift 2
				;;

			--utc-time)
				LB_UTC_TIME="${2}"
				shift 2
				;;

			--win32-loader)
				LB_WIN32_LOADER="${2}"
				shift 2
				;;

			--zsync)
				LB_ZSYNC="${2}"
				shift 2
				;;

			# Other

			--)
				shift
				break
				;;

			*)
				Echo_error "Internal error, unhandled option: %s" "${1}"
				exit 1
				;;
		esac
	done
}

# Processing args such that we have a value for --config if given
# We can thus momentarily print an appropriate message that we are ignoring it under certain circumstances
Local_arguments "${@}"

# Ignoring --config if CWD is already a git repo
# Only print warning from direct execution, not when run from auto script redirection, to avoid repetition
if [ -e .git ] && [ -n "${_CONFIG}" ]
then
	if [ "${1}" != "noauto" ]
	then
		Echo_message "Ignoring --config ${_CONFIG}: ${PWD} is already a git repository"
	fi

	_CONFIG=""
fi

# Ignoring --config if CWD already has a config
# Only print warning from direct execution, not when run from auto script redirection, to avoid repetition
if Stagefile_exists && [ -n "${_CONFIG}" ]
then
	if [ "${1}" != "noauto" ]
	then
		Echo_message "Ignoring --config ${_CONFIG}: ${PWD} is already a live-build configuration tree"
	fi

	_CONFIG=""
fi

# Otherwise, handling --config request, copying specified config
if [ -n "${_CONFIG}" ]
then
	if [ -e "${_CONFIG}" ] || [ -e "/usr/share/live/images/${_CONFIG}" ]
	then
		if [ ! -e "${_CONFIG}" ] && [ -e "/usr/share/live/images/${_CONFIG}" ]
		then
			_CONFIG="/usr/share/live/images/${_CONFIG}"
		fi

		Echo_message "Copying ${_CONFIG}"
		tar -C "${_CONFIG}" -c . | tar -C ./ -x
	else
		_GIT_REPOSITORY="$(echo ${_CONFIG} | sed -e 's|::.*$||')"

		Echo_message "Cloning ${_GIT_REPOSITORY}"
		git clone ${_GIT_REPOSITORY} ./

		if [ "${_GIT_REPOSITORY}" != "${_CONFIG}" ]
		then
			_GIT_BRANCH="$(echo ${_CONFIG} | awk -F\:\: '{ print $NF }')"

			Echo_message "Checking out ${_GIT_BRANCH}"
			git checkout ${_GIT_BRANCH}
		fi
	fi

	if [ -e auto/config ]
	then
		_EXTRA_OPTIONS="$(echo ${@} | sed -e "s|--config ${_GIT_REPOSITORY}::${_GIT_BRANCH}||g" -e "s|--config ${_GIT_REPOSITORY}||g")"

		Echo_message "The following extra options specified to lb config are going to be added to auto/config: ${_EXTRA_OPTIONS}"
		sed -i -e "s|\"\${@}\"|${_EXTRA_OPTIONS} \"\${@}\"|" auto/config
	fi
fi

# "Auto" script redirection.
# Re-run via "auto" script to pick up saved command-line arguments, if not already redirected.
# See the documentation of the Maybe_auto_redirect function for more details.
if [ "${1}" = "noauto" ]; then
	shift
else
	Maybe_auto_redirect config "${@}"
fi

# Reading config defaults configured at system level
if ls /etc/live/build.conf > /dev/null 2>&1 || ls /etc/live/build/* > /dev/null 2>&1
then
	if [ "${_IGNORE_SYSTEM_DEFAULTS}" = "true" ]; then
		Echo_message "Ignoring defaults in %s" "/etc/live/build.conf"
	else
		Echo_message "Using defaults in %s" "/etc/live/build.conf"

		Read_conffiles /etc/live/build.conf /etc/live/build/*
	fi
fi

# Reading existing saved configuration
Read_conffiles $(Common_conffiles)

# Processing arguments again to overwrite just-read previously saved settings as necessary
Local_arguments "${@}"

# Loading user specified saved config file if specified
if [ -n "${_CONFFILE}" ]
then
	Read_conffiles "${_CONFFILE}"
fi

# Setting and validating config
Prepare_config
Validate_config

if [ "${_VALIDATE_MODE}" = "true" ]; then
	Echo_message "Validation check complete! Please address any problem notices given above."
	exit 0
fi

# Creating or updating saved config

if [ ! -e config ]
then
	Echo_message "Creating config tree for a ${LB_MODE}/${LB_DISTRIBUTION_BINARY}/${LB_ARCHITECTURE} system"
	mkdir config
else
	Echo_message "Updating config tree for a ${LB_MODE}/${LB_DISTRIBUTION_BINARY}/${LB_ARCHITECTURE} system"
fi

# Creating live-build configuration
cat > config/common << EOF
# config/common - common options for live-build(7)

# Version of live-build used to build config (config format version)
LB_CONFIGURATION_VERSION="${LB_CONFIGURATION_VERSION}"

# Set package manager
LB_APT="${LB_APT}"

# Set apt/aptitude/debootstrap ftp proxy
LB_APT_FTP_PROXY="${LB_APT_FTP_PROXY}"

# Set apt/aptitude/debootstrap http proxy
LB_APT_HTTP_PROXY="${LB_APT_HTTP_PROXY}"

# Set apt/aptitude pipeline depth
LB_APT_PIPELINE="${LB_APT_PIPELINE}"

# Set apt/aptitude recommends
LB_APT_RECOMMENDS="${LB_APT_RECOMMENDS}"

# Set apt/aptitude security
LB_APT_SECURE="${LB_APT_SECURE}"

# Set apt/aptitude source entries in sources.list
LB_APT_SOURCE_ARCHIVES="${LB_APT_SOURCE_ARCHIVES}"

# Control cache
LB_CACHE="${LB_CACHE}"

# Control if downloaded package indices should be cached
LB_CACHE_INDICES="${LB_CACHE_INDICES}"

# Control if downloaded packages files should be cached
LB_CACHE_PACKAGES="${LB_CACHE_PACKAGES}"

# Control if completed stages should be cached
LB_CACHE_STAGES="${LB_CACHE_STAGES}"

# Set debconf(1) frontend to use
LB_DEBCONF_FRONTEND="${LB_DEBCONF_FRONTEND}"

# Set debconf(1) priority to use
LB_DEBCONF_PRIORITY="${LB_DEBCONF_PRIORITY}"

# Set initramfs hook
LB_INITRAMFS="${LB_INITRAMFS}"

# Set initramfs compression
LB_INITRAMFS_COMPRESSION="${LB_INITRAMFS_COMPRESSION}"

# Set init system
LB_INITSYSTEM="${LB_INITSYSTEM}"

# Set distribution mode
LB_MODE="${LB_MODE}"

# Set system type
LB_SYSTEM="${LB_SYSTEM}"

# Set base name of the image
LB_IMAGE_NAME="${LB_IMAGE_NAME}"

# Set options to use with apt
APT_OPTIONS="${APT_OPTIONS}"

# Set options to use with aptitude
APTITUDE_OPTIONS="${APTITUDE_OPTIONS}"

# Set options to use with debootstrap
DEBOOTSTRAP_OPTIONS="${DEBOOTSTRAP_OPTIONS}"

# Set script to use with debootstrap
DEBOOTSTRAP_SCRIPT="${DEBOOTSTRAP_SCRIPT}"

# Set options to use with gzip
GZIP_OPTIONS="${GZIP_OPTIONS}"

# Enable UTC timestamps
LB_UTC_TIME="${LB_UTC_TIME}"

# live-build options

# Enable breakpoints
# If set here, overrides the command line option
#_BREAKPOINTS="${_BREAKPOINTS}"

# Enable debug
# If set here, overrides the command line option
#_DEBUG="${_DEBUG}"

# Enable color
# If set here, overrides the command line option
#_COLOR="${_COLOR}"

# Enable force
# If set here, overrides the command line option
#_FORCE="${_FORCE}"

# Enable quiet
# If set here, overrides the command line option
#_QUIET="${_QUIET}"

# Enable verbose
# If set here, overrides the command line option
#_VERBOSE="${_VERBOSE}"
EOF

# Creating lb_bootstrap_* configuration
cat > config/bootstrap << EOF
# config/bootstrap - options for live-build(7), bootstrap stage

# Select architecture to use
LB_ARCHITECTURE="${LB_ARCHITECTURE}"

# Select distribution to use
LB_DISTRIBUTION="${LB_DISTRIBUTION}"

# Select parent distribution to use
LB_PARENT_DISTRIBUTION="${LB_PARENT_DISTRIBUTION}"

# Select distribution to use in the chroot
LB_DISTRIBUTION_CHROOT="${LB_DISTRIBUTION_CHROOT}"

# Select parent distribution to use in the chroot
LB_PARENT_DISTRIBUTION_CHROOT="${LB_PARENT_DISTRIBUTION_CHROOT}"

# Select distribution to use in the final image
LB_DISTRIBUTION_BINARY="${LB_DISTRIBUTION_BINARY}"

# Select parent distribution to use in the final image
LB_PARENT_DISTRIBUTION_BINARY="${LB_PARENT_DISTRIBUTION_BINARY}"

# Select parent distribution for debian-installer to use
LB_PARENT_DEBIAN_INSTALLER_DISTRIBUTION="${LB_PARENT_DEBIAN_INSTALLER_DISTRIBUTION}"

# Select archive areas to use
LB_ARCHIVE_AREAS="${LB_ARCHIVE_AREAS}"

# Select parent archive areas to use
LB_PARENT_ARCHIVE_AREAS="${LB_PARENT_ARCHIVE_AREAS}"

# Set parent mirror to bootstrap from
LB_PARENT_MIRROR_BOOTSTRAP="${LB_PARENT_MIRROR_BOOTSTRAP}"

# Set parent mirror to fetch packages from
LB_PARENT_MIRROR_CHROOT="${LB_PARENT_MIRROR_CHROOT}"

# Set security parent mirror to fetch packages from
LB_PARENT_MIRROR_CHROOT_SECURITY="${LB_PARENT_MIRROR_CHROOT_SECURITY}"

# Set parent mirror which ends up in the image
LB_PARENT_MIRROR_BINARY="${LB_PARENT_MIRROR_BINARY}"

# Set security parent mirror which ends up in the image
LB_PARENT_MIRROR_BINARY_SECURITY="${LB_PARENT_MIRROR_BINARY_SECURITY}"

# Set debian-installer parent mirror
LB_PARENT_MIRROR_DEBIAN_INSTALLER="${LB_PARENT_MIRROR_DEBIAN_INSTALLER}"

# Set mirror to bootstrap from
LB_MIRROR_BOOTSTRAP="${LB_MIRROR_BOOTSTRAP}"

# Set mirror to fetch packages from
LB_MIRROR_CHROOT="${LB_MIRROR_CHROOT}"

# Set security mirror to fetch packages from
LB_MIRROR_CHROOT_SECURITY="${LB_MIRROR_CHROOT_SECURITY}"

# Set mirror which ends up in the image
LB_MIRROR_BINARY="${LB_MIRROR_BINARY}"

# Set security mirror which ends up in the image
LB_MIRROR_BINARY_SECURITY="${LB_MIRROR_BINARY_SECURITY}"

# Set debian-installer mirror
LB_MIRROR_DEBIAN_INSTALLER="${LB_MIRROR_DEBIAN_INSTALLER}"

# Set architectures to use foreign bootstrap
LB_BOOTSTRAP_QEMU_ARCHITECTURE="${LB_BOOTSTRAP_QEMU_ARCHITECTURE}"

# Set packages to exclude during foreign bootstrap
LB_BOOTSTRAP_QEMU_EXCLUDE="${LB_BOOTSTRAP_QEMU_EXCLUDE}"

# Set static qemu binary for foreign bootstrap
LB_BOOTSTRAP_QEMU_STATIC="${LB_BOOTSTRAP_QEMU_STATIC}"
EOF

# Creating lb_chroot_* configuration
cat > config/chroot << EOF
# config/chroot - options for live-build(7), chroot stage

# Set chroot filesystem
LB_CHROOT_FILESYSTEM="${LB_CHROOT_FILESYSTEM}"

# Set chroot squashfs compression level
LB_CHROOT_SQUASHFS_COMPRESSION_LEVEL="${LB_CHROOT_SQUASHFS_COMPRESSION_LEVEL}"

# Set chroot squashfs compression type
LB_CHROOT_SQUASHFS_COMPRESSION_TYPE="${LB_CHROOT_SQUASHFS_COMPRESSION_TYPE}"

# Set union filesystem
LB_UNION_FILESYSTEM="${LB_UNION_FILESYSTEM}"

# Set interactive build
LB_INTERACTIVE="${LB_INTERACTIVE}"

# Set keyring packages
LB_KEYRING_PACKAGES="${LB_KEYRING_PACKAGES}"

# Set kernel flavour to use (with arch)
LB_LINUX_FLAVOURS_WITH_ARCH="${LB_LINUX_FLAVOURS_WITH_ARCH}"

# Set kernel packages to use
LB_LINUX_PACKAGES="${LB_LINUX_PACKAGES}"

# Enable security updates
LB_SECURITY="${LB_SECURITY}"

# Enable updates updates
LB_UPDATES="${LB_UPDATES}"

# Enable backports updates
LB_BACKPORTS="${LB_BACKPORTS}"
EOF

# Creating lb_binary_* configuration
cat > config/binary << EOF
# config/binary - options for live-build(7), binary stage

# Set image type
LB_IMAGE_TYPE="${LB_IMAGE_TYPE}"

# Set image filesystem
LB_BINARY_FILESYSTEM="${LB_BINARY_FILESYSTEM}"

# Set apt/aptitude generic indices
LB_APT_INDICES="${LB_APT_INDICES}"

# Set boot parameters
LB_BOOTAPPEND_LIVE="${LB_BOOTAPPEND_LIVE}"

# Set boot parameters
LB_BOOTAPPEND_INSTALL="${LB_BOOTAPPEND_INSTALL}"

# Set boot parameters
LB_BOOTAPPEND_LIVE_FAILSAFE="${LB_BOOTAPPEND_LIVE_FAILSAFE}"

# Set BIOS bootloader
LB_BOOTLOADER_BIOS="${LB_BOOTLOADER_BIOS}"

# Set EFI bootloader
LB_BOOTLOADER_EFI="${LB_BOOTLOADER_EFI}"

# Set checksums
LB_CHECKSUMS="${LB_CHECKSUMS}"

# Set compression
LB_COMPRESSION="${LB_COMPRESSION}"

# Support dm-verity on rootfs
LB_DM_VERITY="${LB_DM_VERITY}"

# Support FEC on dm-verity rootfs
LB_DM_VERITY_FEC_ROOTS="${LB_DM_VERITY_FEC_ROOTS}"

# Set sign script for roothash for dm-verity rootfs
LB_DM_VERITY_SIGN="${LB_DM_VERITY_SIGN}"

# Set zsync
LB_ZSYNC="${LB_ZSYNC}"

# Control if we build binary images chrooted
# NEVER, *EVER*, *E*V*E*R* SET THIS OPTION to false.
LB_BUILD_WITH_CHROOT="${LB_BUILD_WITH_CHROOT}"

# Set debian-installer
LB_DEBIAN_INSTALLER="${LB_DEBIAN_INSTALLER}"

# Set debian-installer suite
LB_DEBIAN_INSTALLER_DISTRIBUTION="${LB_DEBIAN_INSTALLER_DISTRIBUTION}"

# Set debian-installer preseed filename/url
LB_DEBIAN_INSTALLER_PRESEEDFILE="${LB_DEBIAN_INSTALLER_PRESEEDFILE}"

# Toggle use of GUI debian-installer
LB_DEBIAN_INSTALLER_GUI="${LB_DEBIAN_INSTALLER_GUI}"

# Set hdd label
LB_HDD_LABEL="${LB_HDD_LABEL}"

# Set hdd filesystem size
LB_HDD_SIZE="${LB_HDD_SIZE}"

# Set start of partition for the hdd target for BIOSes that expect a specific boot partition start (e.g. "63s"). If empty, use optimal layout.
LB_HDD_PARTITION_START="${LB_HDD_PARTITION_START}"

# Set iso author
LB_ISO_APPLICATION="${LB_ISO_APPLICATION}"

# Set iso preparer
LB_ISO_PREPARER="${LB_ISO_PREPARER}"

# Set iso publisher
LB_ISO_PUBLISHER="${LB_ISO_PUBLISHER}"

# Set iso volume (max 32 chars)
LB_ISO_VOLUME="${LB_ISO_VOLUME}"

# Set jffs2 eraseblock size
LB_JFFS2_ERASEBLOCK="${LB_JFFS2_ERASEBLOCK}"

# Set memtest
LB_MEMTEST="${LB_MEMTEST}"

# Set loadlin
LB_LOADLIN="${LB_LOADLIN}"

# Set win32-loader
LB_WIN32_LOADER="${LB_WIN32_LOADER}"

# Set net tarball
LB_NET_TARBALL="${LB_NET_TARBALL}"

# Set onie
LB_ONIE="${LB_ONIE}"

# Set onie additional kernel cmdline options
LB_ONIE_KERNEL_CMDLINE="${LB_ONIE_KERNEL_CMDLINE}"

# Set inclusion of firmware packages in debian-installer
LB_FIRMWARE_BINARY="${LB_FIRMWARE_BINARY}"

# Set inclusion of firmware packages in the live image
LB_FIRMWARE_CHROOT="${LB_FIRMWARE_CHROOT}"

# Set swap file path
LB_SWAP_FILE_PATH="${LB_SWAP_FILE_PATH}"

# Set swap file size
LB_SWAP_FILE_SIZE="${LB_SWAP_FILE_SIZE}"

# Enable/disable UEFI secure boot support
LB_UEFI_SECURE_BOOT="${LB_UEFI_SECURE_BOOT}"
EOF

# Creating lb_source_* configuration
cat > config/source << EOF
# config/source - options for live-build(7), source stage

# Set source option
LB_SOURCE="${LB_SOURCE}"

# Set image type
LB_SOURCE_IMAGES="${LB_SOURCE_IMAGES}"
EOF

mkdir -p auto
mkdir -p config/apt
mkdir -p config/archives
mkdir -p config/bootloaders
mkdir -p config/debian-installer
mkdir -p config/hooks/live
mkdir -p config/hooks/normal
mkdir -p config/includes
mkdir -p config/includes.binary
mkdir -p config/includes.bootstrap
mkdir -p config/includes.chroot_after_packages
mkdir -p config/includes.chroot_before_packages
mkdir -p config/includes.installer
mkdir -p config/includes.source
mkdir -p config/package-lists
mkdir -p config/packages
mkdir -p config/packages.binary
mkdir -p config/packages.chroot
mkdir -p config/preseed
mkdir -p config/rootfs
mkdir -p local/bin

Echo_message "Symlinking hooks..."

for _HOOK in "${LIVE_BUILD}"/share/hooks/normal/*.hook* /usr/share/live/build/hooks/normal/*.hook*
do
	if [ -e "${_HOOK}" ] && [ ! -e "config/hooks/normal/$(basename ${_HOOK})" ]
	then
		ln -s "${_HOOK}" "config/hooks/normal/$(basename ${_HOOK})"
	fi
done

for _HOOK in "${LIVE_BUILD}"/share/hooks/live/*.hook* /usr/share/live/build/hooks/live/*.hook*
do
	if [ -e "${_HOOK}" ] && [ ! -e "config/hooks/live/$(basename ${_HOOK})" ]
	then
		ln -s "${_HOOK}" "config/hooks/live/$(basename ${_HOOK})"
	fi
done

LIVE_PKG_LIST="config/package-lists/live.list.chroot"
if [ ! -e "${LIVE_PKG_LIST}" ]; then
	NEEDED_PACKAGES=""
	if [ "${LB_INITRAMFS}" = "live-boot" ]; then
		NEEDED_PACKAGES="live-boot live-config"
		case "${LB_INITSYSTEM}" in
			systemd)
				NEEDED_PACKAGES="${NEEDED_PACKAGES} live-config-systemd"
				;;

			sysvinit)
				NEEDED_PACKAGES="${NEEDED_PACKAGES} live-config-sysvinit sysvinit-core"
				;;
		esac
	fi
	for PKG in $NEEDED_PACKAGES; do
		echo "${PKG}" >> "${LIVE_PKG_LIST}"
	done
fi

# Remove empty directories (if user has requested via --clean)
if [ "${_CLEAN}" = "true" ]; then
	# Note, the point of the error handling here is for avoiding failure and messy output
	# should a permissions failure block deletion.
	rmdir --ignore-fail-on-non-empty auto >/dev/null 2>&1 || true
	rmdir --ignore-fail-on-non-empty config/*/ >/dev/null 2>&1 || true
	rmdir --ignore-fail-on-non-empty config >/dev/null 2>&1 || true
	rmdir --ignore-fail-on-non-empty local/*/ >/dev/null 2>&1 || true
	rmdir --ignore-fail-on-non-empty local >/dev/null 2>&1 || true
fi

# Creating stage file
Create_stagefile