#!/bin/bash
#
#   Script to modify AVM FRITZ!Box firmware images (Freetz)
#
#   Copyright (C) 2005-2006 Daniel Eiband <eiband@online.de>
#   Copyright (C) 2006-2011 by the Freetz developers (http://freetz.org)
#
# Licensed under the GPL v2, see the file COPYING in this tarball.

# This script is based on Christian Volkmann's fritzbox mod-0.57.
# Legacy URL: http://www.ip-phone-forum.de/showthread.php?t=65894
#
# Special Thanks to Andreas Buehmann, Christian Volkmann, Enrik Berkhan,
# SpeedyBZ and all members on ip-phone-forum.de who contributed to this mod

SHELL=$BASH

usage()
{
	cat << 'EOF'
Usage: fwmod [-u|-m|-p|-a] [-i <cfg>] [-d <dir>] <orig_fw> [<tk_fw>]
  actions
    -u         unpack firmware image
    -m         modify previously unpacked image
    -p         pack firmware image
    -a         all: unpack, modify and pack firmware image (-u -m -p)
  input/output
    -i <cfg>   input file for configuration data (default: .config)
    -d <dir>   build directory (default: <orig_firmware>.mod)
    <orig_fw>  original firmware name
    <tk_fw>    2nd firmware name (e.g. for merging in web UI)
EOF
}

# Print usage info to stdout (no error, just info)
if [ $# -eq 0 ]; then
	usage
	exit 0
fi

# If we are not running in a fakeroot context, provide one and re-run
if [ $((FAKEROOTKEY)) -eq 0 ] || [ $UID -ne 0 ]; then
	"$(dirname "$0")/tools/build/bin/fakeroot" '--' "$0" "$@"
	exit $?
fi

L1='  '
L2='    '
BOLD=$(echo -e '\033[1m')
NORM=$(echo -e '\033[0m')

# Default values
FREETZ_VERBOSITY_LEVEL=0
DOT_CONFIG="$(dirname "$0")/.config"
CMDLINE_OPTS="umpad:i:"

# Default config override?
# NOTE: Both 'getopts' must have an identical argument list!
while getopts "$CMDLINE_OPTS" opt; do
	if [ "$opt" == "i" ]; then
		DOT_CONFIG="$OPTARG"
		echo $DOT_CCONFIG
	fi
done

DO_UNPACK=0
DO_MOD=0
DO_PACK=0

DIR=''
_OPT=0

# Reset command line option counter
OPTIND=0

# Get other options besides '-i <file>'
# NOTE: Both 'getopts' must have an identical argument list!
while getopts "$CMDLINE_OPTS" opt; do
	case "$opt" in
		u)
			DO_UNPACK=1
			_OPT=1
			;;
		m)
			DO_MOD=1
			_OPT=1
			;;
		p)
			DO_PACK=1
			_OPT=1
			;;
		a)
			DO_UNPACK=1
			DO_MOD=1
			DO_PACK=1
			_OPT=1
			;;
		d)
			DIR="$OPTARG"
			;;
		i)
			# Do nothing, DOT_CONFIG has been assigned already
			;;
		*)
			usage >&2
			exit 1
			;;
	esac
done
shift $(($OPTIND - 1))

if [ $# -ne 1 -a $# -ne 2 ]; then
	usage >&2
	exit 1
fi

if [ "$_OPT" -eq 0 ]; then
	DO_UNPACK=1
	DO_MOD=1
	DO_PACK=1
fi

FIRMWARE="$1"
FIRMWARE2="$2"

BASE_DIR="$(dirname "$0")"
if [ -z "$DIR" ]; then
	DIR="${FIRMWARE}.mod"
fi

ABS_BASE_DIR="$BASE_DIR"
if [[ "$ABS_BASE_DIR" != /* ]]; then
	ABS_BASE_DIR="$(pwd)/$ABS_BASE_DIR"
fi

TOOLS_SUBDIR="tools"
SOURCE_SUBDIR="source"
FIRMWARE_SUBDIR="firmware"
FILESYSTEM_SUBDIR="filesystem"
AVMPLUGINS_SUBDIR="plugins.image"
EXTERNAL_SUBDIR="external"
KERNEL_SUBDIR="kernel"
VARTAR_SUBDIR="var.tar"
HTML_SUBDIR="usr/www"
GRAPHICS_SUBDIR="graphics"

KERNEL_IMAGE="var/tmp/kernel.image"

AVMPLUGINS_FILE="var/tmp/plugins.update"
RAW_KERNEL_FILE="kernel.raw"
RAW_HIDDEN_FILE="kernelsquashfs.raw"
VARTAR_FILE="var.tar"

FINDSQUASHFS_TOOL="find-squashfs"
TICHKSUM_TOOL="tichksum"
RMTICHKSUM_TOOL="rmtichksum"
MAKEDEVS_TOOL="makedevs"
UNSQUASHFS_TOOL="unsquashfs3-lzma"
EXTERNAL_TOOL="external"

MKSQUASHFS_OPTIONS="-noappend -all-root -info"
UNSQUASHFS_OPTIONS="-no-progress"

TAR_TOOL="tar"

TOOLS_DIR="${ABS_BASE_DIR}/${TOOLS_SUBDIR}"
EXTERNAL="${TOOLS_DIR}/${EXTERNAL_TOOL}"
UNSQUASHFS="${TOOLS_DIR}/${UNSQUASHFS_TOOL}"
FINDSQUASHFS="${TOOLS_DIR}/${FINDSQUASHFS_TOOL}"
MKSQUASHFS="${TOOLS_DIR}/${MKSQUASHFS_TOOL}"
TICHKSUM="${TOOLS_DIR}/${TICHKSUM_TOOL}"
RMTICHKSUM="${TOOLS_DIR}/${RMTICHKSUM_TOOL}"
MAKEDEVS="${TOOLS_DIR}/${MAKEDEVS_TOOL}"
MAKEDEVS_FILE="${TOOLS_DIR}/device_table.txt"
TAR="${TOOLS_DIR}/${TAR_TOOL}"
#temporarily use system tar to unpack avm images
UNTAR="$(which tar)"

PACKAGES_DIR_ROOT="${BASE_DIR}/packages"
PATCHES_DIR="${BASE_DIR}/patches"
ROOT_DIR="${BASE_DIR}/root"
KERNEL_REP_DIR="${BASE_DIR}/kernel"
ADDON_DIR="${BASE_DIR}/addon"
GRAPHICS_DIR="${BASE_DIR}/${GRAPHICS_SUBDIR}"
FAVICON_DIR="${GRAPHICS_DIR}/favicon"
TAGGING_DIR="${GRAPHICS_DIR}/tagging"

STATIC_PACKAGES_FILE="${BASE_DIR}/.static"
DYNAMIC_PACKAGES_FILE="${BASE_DIR}/.dynamic"
STATIC_ADDON_FILE="${ADDON_DIR}/static.pkg"
DYNAMIC_ADDON_FILE="${ADDON_DIR}/dynamic.pkg"


# Config file readable?
if [ ! -r "$DOT_CONFIG" ]; then
	echo -e "ERROR: not configured" 1>&2
	exit 1
fi

# Load config
. "$DOT_CONFIG"

# After load config, needs FREETZ_TARGET_CROSS
NM="${ABS_BASE_DIR}/toolchain/target/bin/${FREETZ_TARGET_CROSS}nm"
STRIP="${ABS_BASE_DIR}/toolchain/target/bin/${FREETZ_TARGET_CROSS}strip"

# ar7 (FON WLAN) and ohio (7170) modules dir is 2.6.13.1-ar7/ohio
# ur8 (7270) and iks (7390) modules dir is 2.6.19.2
# ar9 (7320) modules dir is 2.6.28.10
MODULES_SUBDIR="lib/modules/${FREETZ_KERNEL_VERSION}"
if [ "$FREETZ_KERNEL_VERSION" = "2.6.13.1" ]; then
	MODULES_SUBDIR="$MODULES_SUBDIR-${FREETZ_KERNEL_LAYOUT}"
elif [ "$FREETZ_KERNEL_VERSION" = "2.6.28" ]; then
	MODULES_SUBDIR="${MODULES_SUBDIR}.10"
fi


if [ "$FREETZ_TARGET_ARCH_BE" == "y" ]; then
	MKSQUASHFS_OPTIONS+=" -be"
else
	MKSQUASHFS_OPTIONS+=" -le"
fi

if [ "$FREETZ_KERNEL_VERSION_2_6_13_1" -a ! "$FREETZ_REPLACE_KERNEL" == "y" ]; then
	MKSQUASHFS_TOOL="mksquashfs-lzma"
else
	MKSQUASHFS_TOOL="mksquashfs3-lzma"
	MKSQUASHFS_OPTIONS+=" -no-progress -no-exports -no-sparse"
fi

# Dot-include 'modpatch' shell function
. "${TOOLS_DIR}/freetz_patch"

# Dot-include some helper shell function (isFreetzType, rm_files)
. "${TOOLS_DIR}/freetz_functions"

if [ -z "$FIRMWARE" ]; then
	error 1 "no firmware filename supplied"
fi

# Does the firmware image exist ?
if [ -n "$FIRMWARE" -a ! -r "$FIRMWARE" ]; then
	error 1 "firmware image $(basename "$FIRMWARE") not found"
fi
if [ -n "$FIRMWARE2" -a ! -r "$FIRMWARE2" ]; then
	error 1 "firmware image $(basename "$FIRMWARE2") not found"
fi
if [ ! -e "$DIR" ]; then
	mkdir -p "$DIR"
fi

############################################
## Unpack and unsquash the firmware image ##
############################################


ORG_DIR="${DIR}/original"
FIRMWARE_DIR="${ORG_DIR}/${FIRMWARE_SUBDIR}"
FILESYSTEM_DIR="${ORG_DIR}/${FILESYSTEM_SUBDIR}"
KERNEL_DIR="${ORG_DIR}/${KERNEL_SUBDIR}"
AVMPLUGINS_DIR="${KERNEL_DIR}/${AVMPLUGINS_SUBDIR}"
VARTAR_DIR="${KERNEL_DIR}/${VARTAR_SUBDIR}"
HTML_DIR="${FILESYSTEM_DIR}/${HTML_SUBDIR}"

KERNEL="${FIRMWARE_DIR}/${KERNEL_IMAGE}"

RAW_KERNEL="${KERNEL_DIR}/${RAW_KERNEL_FILE}"
FILESYSTEM="${KERNEL_DIR}/${RAW_HIDDEN_FILE}"
AVMPLUGINS="${FIRMWARE_DIR}/${AVMPLUGINS_FILE}"
VARTAR="${FILESYSTEM_DIR}/${VARTAR_FILE}"

if [ "$DO_UNPACK" -gt 0 ]; then
	echo "${BOLD}STEP 1: UNPACK${NORM}"

	rm -rf "$ORG_DIR"
	mkdir "$ORG_DIR"

	echo "unpacking firmware image"
	mkdir "$FIRMWARE_DIR"
	"$UNTAR" -xf "$FIRMWARE" -C "$FIRMWARE_DIR" || exit 1

	# Do the images exist ?
	if [ ! -r "${FIRMWARE_DIR}/${KERNEL_IMAGE}" ]; then
		error 1 "cannot find kernel.image"
	fi

	# Do we have the tool ?
	if [ ! -x "$RMTICHKSUM" ]; then
		error 1 "cannot find the tool $RMTICHKSUM_TOOL"
	fi
	if [ ! -x "$UNSQUASHFS" ]; then
		error 1 "cannot find the tool $UNSQUASHFS_TOOL"
	fi
	if [ ! -x "$FINDSQUASHFS" ]; then
		error 1 "cannot find the very useful tool $FINDSQUASHFS_TOOL"
	fi

	"$RMTICHKSUM" -f "${FIRMWARE_DIR}/${KERNEL_IMAGE}" > /dev/null

	echo "splitting kernel image"
	mkdir "$KERNEL_DIR"
	( cd "$KERNEL_DIR" && "${TOOLS_DIR}/${FINDSQUASHFS_TOOL}" "../${FIRMWARE_SUBDIR}/${KERNEL_IMAGE}" > /dev/null 2>&1 )

	if [ ! -r "$RAW_KERNEL" -o ! -r "$FILESYSTEM" ]; then
		error 1 "kernel splitting failed"
	fi

	echo "unpacking filesystem image"
	modunsqfs "$FILESYSTEM_DIR" "$FILESYSTEM"

	if [ -r "$AVMPLUGINS" ]; then
		echo0 "unpacking AVM plugins"
		mkdir -p "$AVMPLUGINS_DIR"
		"$UNTAR" -xf "$AVMPLUGINS" -C "$AVMPLUGINS_DIR" || exit 1

		for i in "${AVMPLUGINS_DIR}/var/"*.image; do
			AVMPLUGIN="${i##*/plugin-}"
			AVMPLUGIN="${AVMPLUGIN%\.image}"
			echo2 "$AVMPLUGIN image"
			modunsqfs "$AVMPLUGINS_DIR/plugin-${AVMPLUGIN}" "$i" > /dev/null
		done
		chmod -R +w "$AVMPLUGINS_DIR"
	fi

	if [ ! -r "$FILESYSTEM_DIR/var" ]; then
		error 1 "could not unpack the filesystem image"
	fi

	if [ ! -r "$VARTAR" ]; then
		error 1 "no var.tar found"
	fi

	echo "unpacking var.tar"
	mkdir "$VARTAR_DIR"
	"$UNTAR" -xpf "$VARTAR" -C "$VARTAR_DIR" || exit 1

	# Unpacking second firmware image
	if [ -n "$FIRMWARE2" ]; then
		echo0 "unpacking tk image"
		rm -rf "${DIR}/.tk"
		"$0" -u -d "${DIR}/.tk" "$FIRMWARE2" > /dev/null
	fi

	touch "${DIR}/.unpacked"
	echo "done."
	echo
fi


###############################################
# Lets copy and modify the unpacked firmware ##
###############################################


MOD_DIR="${DIR}/modified"
FIRMWARE_MOD_DIR="${MOD_DIR}/${FIRMWARE_SUBDIR}"
FILESYSTEM_MOD_DIR="${MOD_DIR}/${FILESYSTEM_SUBDIR}"
EXTERNAL_MOD_DIR="${MOD_DIR}/${EXTERNAL_SUBDIR}"
KERNEL_MOD_DIR="${MOD_DIR}/${KERNEL_SUBDIR}"
AVMPLUGINS_MOD_DIR="${KERNEL_MOD_DIR}/${AVMPLUGINS_SUBDIR}"
AVMPLUGINS_FILESYSTEM_MOD_DIR="${FILESYSTEM_MOD_DIR}/usr/share/avmplugins"
VARTAR_MOD_DIR="${KERNEL_MOD_DIR}/${VARTAR_SUBDIR}"

KERNEL_MOD="${FIRMWARE_MOD_DIR}/${KERNEL_IMAGE}"

RAW_KERNEL_MOD="${KERNEL_MOD_DIR}/${RAW_KERNEL_FILE}"
FILESYSTEM_MOD="${KERNEL_MOD_DIR}/${RAW_HIDDEN_FILE}"
VARTAR_MOD="${FILESYSTEM_MOD_DIR}/${VARTAR_FILE}"
PACKAGES_DIR="${PACKAGES_DIR_ROOT}/target-${FREETZ_TARGET_ARCH}_uClibc-${FREETZ_TARGET_UCLIBC_VERSION}"
TARGET_SPECIFIC_ROOT_DIR="${PACKAGES_DIR}/root"

HTML_MOD_DIR="${FILESYSTEM_MOD_DIR}/${HTML_SUBDIR}"
# HTML_LANG_MOD_DIR can't be defined here
MODULES_DIR="${FILESYSTEM_MOD_DIR}/${MODULES_SUBDIR}"

if [ "$DO_MOD" -gt 0 ]; then
	echo "${BOLD}STEP 2: MODIFY${NORM}"

	# Check if firmware is unpacked
	if [ ! -r "${DIR}/.unpacked" ]; then
		error 1 "firmware image has to be unpacked before modifying"
	fi

	rm -rf "$MOD_DIR"
	rm -f "${DIR}/.modified"

	# Copy the unpacked directory
	mkdir -p "$MOD_DIR"
	[ "$FREETZ_HAS_UDEV" == y ] || exclude_dev="--exclude=./filesystem/dev"
	"$TAR" -c -C "$ORG_DIR" $exclude_dev . | "$TAR" -x -C "$MOD_DIR" || exit 1

	# Fix some permissions
	chmod -R u+w "$FILESYSTEM_MOD_DIR"
	find "${FILESYSTEM_MOD_DIR}" "${VARTAR_MOD_DIR}" -type d -exec chmod 755 {} '+'
	# Give all users write permissions to /var/tmp to allow it to be used as a temp-directory.
	# Set sticky bit to prevent users from deleting/renaming files they are not the owners of.
	# NB: The permissions set are the regular temp-directory permissions on Unix-like systems.
	chmod 1777 "${VARTAR_MOD_DIR}/var/tmp"

	echo0 -n "applying symlinks, deleting additional webinterfaces in:"
	oems="$(grep 'for i in  avm' "${FIRMWARE_MOD_DIR}/var/install" | head -n 1 | sed -e 's/^.*for i in\(.*\); do.*$/\1/')"
	for webdir in ${FILESYSTEM_MOD_DIR}/usr/www ${FILESYSTEM_MOD_DIR}/usr/www.nas; do
		if [ -d ${webdir}/avm* ]; then
			echo0 -n -l " ${webdir#${FILESYSTEM_MOD_DIR}/}"
			mv ${webdir}/avm* ${webdir}/all
			for i in $oems; do
				rm -rf ${webdir}/$i
				ln -s all ${webdir}/$i
			done
		fi
	done
	echo0 -l

	echo0 "applying patches"

	echo1 "applying patches (${FREETZ_TYPE_PREFIX}-${FREETZ_TYPE_LANGUAGE})"

	# Apply patches
	if [ ! -d "${PATCHES_DIR}/${FREETZ_TYPE_PREFIX}" ]; then
		error 1 "missing ${PATCHES_DIR}/${FREETZ_TYPE_PREFIX}"
	fi

	# Execute version specific patch scripts
	for i in "${PATCHES_DIR}/${FREETZ_TYPE_PREFIX}/${FREETZ_TYPE_LANGUAGE}/"*.sh \
		"${PATCHES_DIR}/${FREETZ_TYPE_PREFIX}/"*.sh; do
		[ -r "$i" ] || continue
		echo2 "applying patch file $i"
		. $i
	done

	# Now we are in place to check html directory
	for i in all/en all; do
		if [ -d "${HTML_MOD_DIR}/$i" ]; then
			HTML_LANG_MOD_DIR="${HTML_MOD_DIR}/$i"
			break
		fi
	done

	[ -z "$HTML_LANG_MOD_DIR" ] && error 1 "No HTML directory given."

	# Apply (general, version specific, language specific) patches
	shopt -s nullglob
	for i in "${PATCHES_DIR}/"*.patch \
		"${PATCHES_DIR}/${FREETZ_TYPE_PREFIX}/"*.patch \
		"${PATCHES_DIR}/${FREETZ_TYPE_PREFIX}/${FREETZ_TYPE_LANGUAGE}/"*.patch
	do
		modpatch "$FILESYSTEM_MOD_DIR" "$i"
	done
	shopt -u nullglob

	echo1 "creating symlinks /tmp, /mod and /home"
	rm -rf "$FILESYSTEM_MOD_DIR"/tmp
	ln -s var/{tmp,mod} "$FILESYSTEM_MOD_DIR"/
	ln -s var/mod/home "$FILESYSTEM_MOD_DIR"/

	echo1 "creating /mnt and /opt"
	mkdir -p "$FILESYSTEM_MOD_DIR"/mnt
	# 7390 labor preview: /opt is symlink to /var/InternerSpeicher/opt
	[ ! -L "$FILESYSTEM_MOD_DIR"/opt ] && mkdir -p "$FILESYSTEM_MOD_DIR"/opt

	# Set version and options
	SUBVERSION_FILE="${BASE_DIR}/.version"
	FIRMWAREVERSION_FILE="${FILESYSTEM_MOD_DIR}/etc/.version"
	FIRMWAREVERSION="$(cat $FIRMWAREVERSION_FILE)"
	PACKAGES_LIST_FILE="${BASE_DIR}/.packages"

	if [ ! -r "$SUBVERSION_FILE" ]; then
		error 1 "cannot determine version"
	fi

	if [ "$FREETZ_DEVELOPER_VERSION_STRING" == "y" ]; then
		# be compatible: older versions of svnversion need WC_PATH
		if SVN_VERSION="$(svnversion . | tr ":" "_")"; then
			[ "${SVN_VERSION:0:6}" == "export" ] && SVN_VERSION=""
			[ "$SVN_VERSION" != "" ] && SVN_VERSION="-$SVN_VERSION"
		fi
	fi

	SUBVERSION="$(cat $SUBVERSION_FILE)${SVN_VERSION}"
	#delete .packages file
	rm -f "${PACKAGES_LIST_FILE}"

	for i in $(set|grep -i "^FREETZ_REMOVE_.*=y$"|sed -e "s/^.\{14\}//;s/=.*//"|tr [A-Z] [a-z]|sort); do
		OPTIONS+=" -$i"
	done

	OPTIONS_ADD=" +busybox"
	for i in $(set|grep -i "^FREETZ_PATCH_.*=y$"|sed -e "s/^.\{13\}//;s/=.*//"|tr [A-Z] [a-z]); do
		OPTIONS_ADD+=" +$i"
	done

	for pkg in $(static_packages) $(static_addons); do
		OPTIONS_ADD+=" +$pkg"
		echo "$pkg" >> "${PACKAGES_LIST_FILE}"
	done

	if [ "$FREETZ_REPLACE_KERNEL" == "y" ] && [ "$FWMOD_PATCH_TEST" != "y" ]; then
		KERNEL_SUBVERSION_FILE="${KERNEL_REP_DIR}/.version-${FREETZ_KERNEL_LAYOUT}-${FREETZ_KERNEL_REF}-${FREETZ_AVM_VERSION_STRING}"

		if [ ! -r "$KERNEL_SUBVERSION_FILE" ]; then
			error 1 "cannot determine kernel version"
		fi

		KERNEL_SUBVERSION="$(cat $KERNEL_SUBVERSION_FILE)"
		OPTIONS_ADD+=" +kernel ($KERNEL_SUBVERSION)"
	fi

	for i in $(echo ${OPTIONS_ADD}|sed -e's: +:\n+:g'|sort); do
		OPTIONS+=" $i"
	done

	echo1 "setting freetz-version '${SUBVERSION}'"
	echo "$SUBVERSION" > "${FILESYSTEM_MOD_DIR}/etc/.freetz-version"
	if [ "$FREETZ_SUBVERSION_STRING" == "y" ]; then
		echo1 "setting subversion '${SUBVERSION}'"
		echo "$SUBVERSION" > "${FILESYSTEM_MOD_DIR}/etc/.subversion"
		sed -i -e "s/\export\ FIRMWARE_SUBVERSION=.*\$/export\ FIRMWARE_SUBVERSION=\"${SUBVERSION}\"/g" "${FILESYSTEM_MOD_DIR}/etc/version"

		if [ ! -e "${FILESYSTEM_MOD_DIR}/etc/init.d/rc.init" ]; then
			AVM_SUBVERSION=`grep "SUBVERSION=" "${FILESYSTEM_MOD_DIR}/etc/init.d/rc.conf" | sed -e "s/[^-0-9]//g"`
			sed -i -e "s/SUBVERSION=\"$AVM_SUBVERSION\"/SUBVERSION=\"$SUBVERSION\"/" "${FILESYSTEM_MOD_DIR}/etc/init.d/rc.conf"
		fi
	fi

	sed -i -e "s/<subversion>/${SUBVERSION}/g" "${FILESYSTEM_MOD_DIR}/usr/bin/system_status"
	sed -i -e "s/<options>/${OPTIONS}/g" "${FILESYSTEM_MOD_DIR}/usr/bin/system_status"

	# Execute general patch scripts
	for i in "${PATCHES_DIR}/"*.sh; do
		[ -r "$i" ] || continue
		echo2 "applying patch file $i"
		. $i
	done

	# stop execution if in patch test mode
	if [ "$FWMOD_PATCH_TEST" == "y" ]; then
		echo "${BOLD}Patch test mode: exiting without error.${NORM}"
		exit
	fi

	# remove oems
	[ "$FREETZ_VERBOSITY_LEVEL" -ge 1 ] && echo -n "${L1}removing oem:"
	oem_removed=0
	oem_kept=0
	oem_list=

	oems=$(grep -E 'for i in  (avm|tcom)' "${FIRMWARE_MOD_DIR}/var/install" | head -n 1 | sed -e 's/^.*for i in\(.*\); do.*$/\1/')

	if [ -z "$oems" ]; then
		error 1 "no oems found"
	fi


	ln -sf /usr/www/cgi-bin/freetz_status "${HTML_LANG_MOD_DIR}/cgi-bin/freetz_status"
	[ "$FREETZ_PACKAGE_WOL_CGI" == "y" ] && ln -sf /usr/www/cgi-bin/freetz_wol "${HTML_LANG_MOD_DIR}/cgi-bin/freetz_wol"

	for i in $oems; do
		if [ "$(eval "echo \"\$FREETZ_REMOVE_BRANDING_${i}\"")" == "y" ]; then
			[ "$FREETZ_VERBOSITY_LEVEL" -ge 1 ] && echo -n " $i"
			# delete webinterface symlinks otherwise user can choose branding in status.cgi
			rm -rf "${FILESYSTEM_MOD_DIR}/usr/www/${i}"
			rm -rf "${FILESYSTEM_MOD_DIR}/usr/www.nas/${i}"
			find ${FILESYSTEM_MOD_DIR}/etc/default.* -name "*${i}*" | xargs rm -rf
			oem_removed=1
		else
			oem_list+=" $i"
			oem_kept=1
		fi
	done

	if [ "$FREETZ_VERBOSITY_LEVEL" -ge 1 ]; then
		[ "$oem_removed" -eq 0 ] && echo -n " none"
		echo
	fi

	if isFreetzType W501V; then
		oem_list="tcom avm"
	fi
	sed -i -r -e 's/for i in  (avm|tcom).*; do/for i in '"$oem_list"' ; do/g' "${FIRMWARE_MOD_DIR}/var/install"

	if [ "$oem_kept" -eq 0 ]; then
		error 1 "please choose at least one OEM (branding) in menuconfig: AVM, 1&1, Freenet etc."
	fi

	# Copy selected avmplugins into the firmware
	if [ "$FREETZ_AVMPLUGINS_ENABLED" == "y" ]; then
		echo0 "installing AVM plugins"
		echo "#" > ${FILESYSTEM_MOD_DIR}/sbin/start_plugin.sh
		rm -rf ${FIRMWARE_MOD_DIR}/${AVMPLUGINS_FILE}
		mkdir "${AVMPLUGINS_FILESYSTEM_MOD_DIR}"
		for i in `find "${AVMPLUGINS_MOD_DIR}" -maxdepth 1 -type d -name var -prune -false , -type d -name "plugin-*" 2>/dev/null`; do
			AVMPLUGIN="${i##*plugin-}"
			if [ "$(eval "echo \"\$FREETZ_AVMPLUGINS_$(echo "$AVMPLUGIN" | tr [:lower:] [:upper:])\"")" == "y" ]; then
				echo2 "$AVMPLUGIN plugin"
				cp -a "${AVMPLUGINS_MOD_DIR}/plugin-${AVMPLUGIN}" "${AVMPLUGINS_FILESYSTEM_MOD_DIR}/plugin-${AVMPLUGIN}"
				ln -s "/usr/share/avmplugins/plugin-${AVMPLUGIN}" "${VARTAR_MOD_DIR}/var/plugin-${AVMPLUGIN}"
				for module in `cd "${AVMPLUGINS_FILESYSTEM_MOD_DIR}/plugin-${AVMPLUGIN}";find -type f -name "*.ko"`; do
					echo2 "moving ${module##*/} to standard modules dir"
					mv "${AVMPLUGINS_FILESYSTEM_MOD_DIR}/plugin-${AVMPLUGIN}/$module" "${FILESYSTEM_MOD_DIR}/$module"
				done
			fi
		done
	fi

	if [ "$FREETZ_INSTALL_BASE" == "y" ]; then
		echo "installing mod base"

		MOD_CRON="${VARTAR_MOD_DIR}/var/spool/cron/crontabs"
		MOD_ROOT="${VARTAR_MOD_DIR}/var/mod"

		# Remove symlink before creating directory
		rm -rf ${VARTAR_MOD_DIR}/var/spool

		mkdir -p "$MOD_CRON"
		mkdir -p "${MOD_ROOT}/pkg" "${MOD_ROOT}/home" "${MOD_ROOT}/lib" "${MOD_ROOT}/root"
		mkdir -p "${MOD_ROOT}/bin" "${MOD_ROOT}/sbin"
		mkdir -p "${MOD_ROOT}/var/cache"
		mkdir -p "${MOD_ROOT}/usr/bin" "${MOD_ROOT}/usr/sbin" "${MOD_ROOT}/usr/share" \
			"${MOD_ROOT}/usr/lib" "${MOD_ROOT}/usr/lib/cgi-bin" "${MOD_ROOT}/usr/lib/freetz"
		mkdir -p "${MOD_ROOT}/etc/conf" "${MOD_ROOT}/etc/init.d" "${MOD_ROOT}/etc/reg"
		ln -s /tmp/flash/mod/.profile "${MOD_ROOT}/root/.profile"
		# AVM compatibility symlink
		ln -s ../sys "${VARTAR_MOD_DIR}/var/sysfs"

		echo "root:x:0:0:root:/mod/root:/bin/sh" > "${VARTAR_MOD_DIR}/var/tmp/passwd"
		echo 'root:$1$$zO6d3zi9DefdWLMB.OHaO.:12332:0:99999:7:::' > "${VARTAR_MOD_DIR}/var/tmp/shadow"
		echo "root:x:0:" > "${VARTAR_MOD_DIR}/var/tmp/group"
		echo "users:x:1:" >> "${VARTAR_MOD_DIR}/var/tmp/group"
		touch "${VARTAR_MOD_DIR}/var/tmp/ethers"
		touch "${VARTAR_MOD_DIR}/var/tmp/exports"
		touch "${VARTAR_MOD_DIR}/var/tmp/gshadow"
		chmod 644 "${VARTAR_MOD_DIR}/var/tmp/passwd" "${VARTAR_MOD_DIR}/var/tmp/group"
		chmod 600 "${VARTAR_MOD_DIR}/var/tmp/shadow" "${VARTAR_MOD_DIR}/var/tmp/gshadow"
		# Fix permissions set by AVM, in particular revoke write permissions for g- and o-users.
		chmod 644 "${VARTAR_MOD_DIR}/var/tmp/hosts" "${VARTAR_MOD_DIR}/var/tmp/resolv.conf"
		mkdir -p "${VARTAR_MOD_DIR}/var/tmp/onlinechanged"
		ln -s ../var/tmp/ethers "${FILESYSTEM_MOD_DIR}/etc/ethers"
		ln -s ../var/tmp/exports "${FILESYSTEM_MOD_DIR}/etc/exports"
		ln -s ../var/tmp/gshadow "${FILESYSTEM_MOD_DIR}/etc/gshadow"

		rm -f ${VARTAR_MOD_DIR}/var/*/.dummy

		echo1 "installing libs"
		for i in $(set | grep ^FREETZ_LIB_.*=y | grep -v ^FREETZ_LIB_STDCXXLIB); do
			found=0
			conf=${i%%=*}
			[ "$conf" != "${conf%%_WITH_*}" ] && continue # skip suboptions
			bn=${conf#FREETZ_LIB_}
			fn=${bn//_/[-+._]}
			echo2 "$bn"
			for dn in lib usr/lib usr/lib/freetz usr/lib/xtables; do
				files=$(shopt -s nullglob; echo ${TARGET_SPECIFIC_ROOT_DIR}/$dn/$fn[-.]*so*)
				if [ -z "$files" ]; then
					continue;
				fi
				found=1
				[ -d "${FILESYSTEM_MOD_DIR}/${dn}" ] || mkdir -p "${FILESYSTEM_MOD_DIR}/${dn}"
				cp -a $files "${FILESYSTEM_MOD_DIR}/${dn}/"
			done
			if [ "$found" = 0 ]; then
				warn "Library $bn selected, but no files found"
			fi
		done
		[ "$FREETZ_LIB_libuClibc" == "y" ] && cp -a "${TARGET_SPECIFIC_ROOT_DIR}/lib/libc.so.0" "${FILESYSTEM_MOD_DIR}/lib/"

		if [ "$FREETZ_SHARE_terminfo" == "y" ]; then
			echo1 "installing terminfos"
			for i in $(set | grep ^FREETZ_SHARE_terminfo_.*=y |grep -v '^FREETZ_SHARE_terminfo_showall=' ); do
				dn=usr/share/terminfo
				conf=${i%%=*}
				bn=${conf#FREETZ_SHARE_terminfo_}
				fn=$(echo "$bn" | sed 's/MINUS/-/g;s/PLUS/+/g;s/\DOT/./g')
				echo2 "$fn"
				fn="${fn:0:1}/$fn"
				file="${TARGET_SPECIFIC_ROOT_DIR}/$dn/$fn"
				if [ ! -e "$file" ]; then
					warn "Terminfo $bn selected, but no file found"
					continue;
				fi
				dest="${FILESYSTEM_MOD_DIR}/$dn/${fn:0:1}"
				[ -d "$dest" ] || mkdir -p "$dest"
				cp -a $file "$dest/"
			done
		fi
	else
		error 1 "installation of base system is mandatory"
	fi

	if [ "$FREETZ_REPLACE_BUSYBOX" == "y" ]; then
		echo0 "replacing busybox"

		echo1 "replacing busybox-${FREETZ_TARGET_REF}"

		if [ ! -r "${PACKAGES_DIR}/busybox/busybox-${FREETZ_TARGET_REF}" ]; then
			error 1 "cannot find busybox replacement"
		fi

		# Replace busybox
		cp -pf "${PACKAGES_DIR}/busybox/busybox-${FREETZ_TARGET_REF}" "${FILESYSTEM_MOD_DIR}/bin/busybox"

		echo1 "installing symlinks"

		if [ ! -r "${PACKAGES_DIR}/busybox/busybox-${FREETZ_TARGET_REF}.links" ]; then
			error 1 "cannot find busybox links"
		fi

		# Remove old busybox links
		# be compatible: do not use -delete (not found in older versions of find)
		find "$FILESYSTEM_MOD_DIR" \( -lname "busybox" -or -lname "*/busybox" \) -print0 | xargs -0 rm

		# Install new busybox links
		for link in $(cat "${PACKAGES_DIR}/busybox/busybox-${FREETZ_TARGET_REF}.links"); do
			LINK_DIR="$(dirname "$link")"
			LINK_NAME="$(basename "$link")"

			case "$LINK_DIR" in
				/)
					BUSYBOX_PATH="bin/busybox"
					;;
				/bin)
					BUSYBOX_PATH="busybox"
					;;
				/sbin)
					BUSYBOX_PATH="../bin/busybox"
					;;
				/usr/bin|/usr/sbin)
					BUSYBOX_PATH="../../bin/busybox"
					;;
				*)
					error 1 "unknown installation directory: $link"
					;;
			esac

			ln -sf "$BUSYBOX_PATH" "${FILESYSTEM_MOD_DIR}${LINK_DIR}/$LINK_NAME" ||
			error 1 "could not create link for $link"
		done || exit 1
	else
		error 1 "installation of busybox replacement is mandatory"
	fi

	if [ "$FREETZ_REPLACE_KERNEL" == "y" ]; then
		echo0 "replacing kernel"

		if [ ! -r "${KERNEL_REP_DIR}/kernel-${FREETZ_KERNEL_LAYOUT}-${FREETZ_KERNEL_REF}-${FREETZ_AVM_VERSION_STRING}.bin" ]; then
			error 1 "can't find kernel for ref ${FREETZ_KERNEL_LAYOUT}-${FREETZ_KERNEL_REF}-${FREETZ_AVM_VERSION_STRING}"
		fi

		echo1 "replacing kernel-${FREETZ_KERNEL_LAYOUT}-${FREETZ_KERNEL_REF}-${FREETZ_AVM_VERSION_STRING} (${KERNEL_SUBVERSION})"
		cp "${KERNEL_REP_DIR}/kernel-${FREETZ_KERNEL_LAYOUT}-${FREETZ_KERNEL_REF}-${FREETZ_AVM_VERSION_STRING}.bin" "$RAW_KERNEL_MOD"
	fi

	echo0 "installing modules"
	for i in \
	$( \
		cd "${KERNEL_REP_DIR}/modules-${FREETZ_KERNEL_LAYOUT}-${FREETZ_KERNEL_REF}-${FREETZ_AVM_VERSION_STRING}" && \
		find . -type d -name .svn -prune -false , -type f \( -name modules.dep -o -name "*.ko" \) \
	)
	do
		bn="$(basename "$i")"
		mod="${bn%\.ko}"

		if [ "$FREETZ_MODULES_ALL" = "y" -o "$(eval "echo \"\$FREETZ_MODULE_$(echo "$mod" | tr '\-+' '_x')\"")" == "y" ]; then
			echo2 "${bn}"
			dn="$(dirname "$i")"
			[ -d "${MODULES_DIR}/kernel/${dn}" ] || mkdir -p "${MODULES_DIR}/kernel/${dn}"
			cp -a "${KERNEL_REP_DIR}/modules-${FREETZ_KERNEL_LAYOUT}-${FREETZ_KERNEL_REF}-${FREETZ_AVM_VERSION_STRING}/${i}" "${MODULES_DIR}/kernel/${dn}/"
		fi
	done

	echo1 "generating modules.dep"
	NM=$NM ${TOOLS_SUBDIR}/depmod.pl -b "$MODULES_DIR" \
		-F ${KERNEL_REP_DIR}/System-${FREETZ_KERNEL_LAYOUT}-${FREETZ_KERNEL_REF}-${FREETZ_AVM_VERSION_STRING}.map 2> /dev/null
	# add plugin kernel modules for 7270 if plugins are not enabled
	if [ "$FREETZ_TYPE_FON_WLAN_7270_V1" == "y" -a ! "$FREETZ_AVMPLUGINS_ENABLED" == "y" ]; then
		echo -e "kernel/drivers/net/rfcntl/rfcntl.ko: kernel/drivers/char/audio/avm_audio.ko\nkernel/drivers/char/audio/avm_audio.ko:\n" >> $MODULES_DIR/modules.dep
	fi

	echo0 "installing packages"
	for pkg in $(static_packages); do
		echo1 "${pkg}"
		pkg_name=$(pkg_name "$pkg")

		"$TAR" -c -C "${PACKAGES_DIR}/${pkg}/root" \
			$(
				[ -r "${PACKAGES_DIR}/${pkg}/.exclude" ] \
						&& echo "--exclude-from=${PACKAGES_DIR}/${pkg}/.exclude"
			) . | \
		"$TAR" -x -C "$FILESYSTEM_MOD_DIR" || exit 1

		[ -d "${PACKAGES_DIR}/${pkg}/${VARTAR_SUBDIR}" ] && \
			$(
				"$TAR" -c -C "${PACKAGES_DIR}/${pkg}/${VARTAR_SUBDIR}" . | \
				"$TAR" -x -C ${VARTAR_MOD_DIR} || exit 1
			)

		[ -r "${PACKAGES_DIR}/${pkg}/.language" ] && \
			modlang "${PACKAGES_DIR}/${pkg}/.language" "${FILESYSTEM_MOD_DIR}"

		grep -q "^$pkg_name$" "${FILESYSTEM_MOD_DIR}/etc/static.pkg" >/dev/null 2>&1 || ( echo "$pkg_name" >> "${FILESYSTEM_MOD_DIR}/etc/static.pkg" )
	done
	for pkg in $(static_addons); do
		echo1 "${pkg} (addon)"
		pkg_name=$(pkg_name "$pkg")

		if [ -e "${ADDON_DIR}/${pkg}/etc/init.d/rc.${pkg_name}" ]; then
			echo "NOTICE: addon '$pkg' is in old-style format (no language support)." 1>&2
			"$TAR" -c -C "${ADDON_DIR}/${pkg}" . | "$TAR" -x -C "$FILESYSTEM_MOD_DIR" || exit 1
		else
			"$TAR" -c -C "${ADDON_DIR}/${pkg}/root" \
				$(
					[ -r "${ADDON_DIR}/${pkg}/.exclude" ] \
							&& echo "--exclude-from=${ADDON_DIR}/${pkg}/.exclude" \
				) . | \
			"$TAR" -x -C "$FILESYSTEM_MOD_DIR" || exit 1

			[ -d "${ADDON_DIR}/${pkg}/${VARTAR_SUBDIR}" ] && \
				$(
					"$TAR" -c -C "${ADDON_DIR}/${pkg}/${VARTAR_SUBDIR}" . | \
					"$TAR" -x -C ${VARTAR_MOD_DIR} || exit 1
				)

			[ -r "${ADDON_DIR}/${pkg}/.language" ] && \
				modlang "${ADDON_DIR}/${pkg}/.language" "${FILESYSTEM_MOD_DIR}"
		fi

		grep -q "^$pkg_name$" "${FILESYSTEM_MOD_DIR}/etc/static.pkg" >/dev/null 2>&1 || ( echo "$pkg_name" >> "${FILESYSTEM_MOD_DIR}/etc/static.pkg" )
	done

	if [ -x "${BASE_DIR}/fwmod_custom" ]; then
		echo "invoking custom script"

		# syntax check
		$SHELL -n "${BASE_DIR}/fwmod_custom"

		if [ $? -ne 0 ]; then
			error 1 "syntax error in custom script"
		fi

		( cd "$MOD_DIR" && ../../fwmod_custom all ) || exit 1

		if [ $? -ne 0 ]; then
			error 1 "custom script returned error"
		fi
	fi

	# Processing some options, must be done after base package is in place
	if [ "$FREETZ_INSTALL_BASE" == "y" ]; then
		echo0 "processing mod base options"
		# color scheme
		if [ "$FREETZ_STYLE" == "grey" ]; then
			echo1 "setting grey style as default"
			ln -s colorscheme-grey.css ${FILESYSTEM_MOD_DIR}/usr/share/style/colorscheme.css
		else
			echo1 "setting colored style as default"
			ln -s colorscheme-colored.css ${FILESYSTEM_MOD_DIR}/usr/share/style/colorscheme.css
		fi
		# favicon
		if [ "$FREETZ_FAVICON_STRING" != "none" ]; then
			echo1 "adding favicon(s) (${FREETZ_FAVICON_STRING})"
			cp "${FAVICON_DIR}/${FREETZ_FAVICON_STRING}/freetz.ico" "${FILESYSTEM_MOD_DIR}/usr/share/favicon.ico"
			ln -s "../share/favicon.ico" "${FILESYSTEM_MOD_DIR}/usr/mww/favicon.ico"
			if [ -e "${FAVICON_DIR}/${FREETZ_FAVICON_STRING}/box.ico" ]; then
				cp "${FAVICON_DIR}/${FREETZ_FAVICON_STRING}/box.ico" "${HTML_LANG_MOD_DIR}/html/favicon.ico"
				ln -fs "./html/favicon.ico" "${HTML_LANG_MOD_DIR}/favicon.ico"
			fi
		fi
		# security level
		echo1 "patching security level"
		sed -i -e "s/sec_level=1/sec_level=$FREETZ_SECURITY_LEVEL/g" ${FILESYSTEM_MOD_DIR}/usr/lib/libmodcgi.sh
		# external
		[ ! "$EXTERNAL_ENABLED" == "y" ] && echo1 "rc.external was not integrated into image"
		# freetz mount
		[ ! "$FREETZ_PATCH_FREETZMOUNT" == "y" ] && echo1 "libmodmount.sh was not integrated into image"
		# Box-Info
		[ "$FREETZ_REMOVE_BOX_INFO" == "y" ] && echo1 "Box-Info cgi was not integrated into image"
		# FREETZ-Info
		[ "$FREETZ_REMOVE_FREETZ_INFO" == "y" ] && echo1 "FREETZ-Info cgis were not integrated into image"
		# Packing .config into image
		if [ ! "$FREETZ_REMOVE_DOT_CONFIG" == "y" ]; then
			echo1 "integrating stripped .config file into image"
			dot_config_file="$MOD_DIR/filesystem/etc/.config"
			cat .config | sed -e "s/#.*//g;/^$/d" > "$dot_config_file"
		fi
		# tagging
		if [ "$FREETZ_TAGGING_STRING" != "none" ]; then
			echo1 "tagging avm webif (tag by ${FREETZ_TAGGING_STRING})"
			# newer (small logo @left, eg 7270 04.88)
			if [ -z "$tagging_files" ]; then
				tagging_files="$(find ${HTML_MOD_DIR} -name kopfbalken_links.gif)"
				tagging_position="center"
				tagging_geometry="+0+0"
			fi
			# older (big header @top, eg 7141 04.76)
			if [ -z "$tagging_files" ]; then
				tagging_files="$(find ${HTML_MOD_DIR} -name fw_header980.gif)"
				tagging_position="west"
				tagging_geometry="+0+0"
			fi
			# even older (big header @top, eg 7050 04.03)
			if [ -z "$tagging_files" ]; then
				tagging_files="$(find ${HTML_MOD_DIR} -name fw_header.gif)"
				tagging_position="west"
				tagging_geometry="+0-5"
			fi
			# tagging
			[ -z "$tagging_files" ] && error 1 "tagging failed, no files to tag found."
			tagging_picture="${TAGGING_DIR}/${FREETZ_TAGGING_STRING}.png"
			for tagging_file in $tagging_files; do
				echo2 "${tagging_file}"
				composite -dissolve 100% -gravity $tagging_position -geometry $tagging_geometry -quality 100 $tagging_picture $tagging_file $tagging_file
				[ $? -ne 0 ] && error 1 "tagging failed while processing ${tagging_file#${FILESYSTEM_MOD_DIR}/}"
			done
		fi
	fi

	if [ "$FREETZ_STRIP_LIBRARIES" == "y" ]; then
		echo0 "shrinking shared libs"
		. ${TOOLS_DIR}/freetz_mklibs
		mklibs || error 1 "mklibs returned an error. Please see mklibs.log."
	fi

	echo0 "stripping leftover unstripped binaries"
	for i in `find ${FILESYSTEM_MOD_DIR} ! \( -name '*.ko' -o -path '*/usr/www/*' -o -path '*/etc/default*' -o -path '*/lib/modules*' \) \
		\( -perm +100 -o -name "*.so*" \) -type f -exec file {} '+'|sed -n 's|^\(.*\):.*MIPS.*not stripped.*|\1|p'`; do
		echo2 $i
		chmod u+r $i
		$STRIP -p --remove-section={.comment,.note,.pdr} $i
	done

	# external should run after modifying and stripping and so on
	# only run, if packaging is enabled

	if [ "$DO_PACK" -gt 0 ]; then
		if [ "$EXTERNAL_ENABLED" == "y" ]; then
			echo0 "processing external"
			[ ! -x "$EXTERNAL" ] && error 1 "cannot find the tool $EXTERNAL_TOOL"
			. "${EXTERNAL}"
		fi
	fi

	touch "${DIR}/.modified"
	echo "done."
	echo
fi


################################
## Pack the modified firmware ##
################################


if [ "$DO_PACK" -gt 0 ]; then
	echo "${BOLD}STEP 3: PACK${NORM}"

	if [ ! "$DO_MOD" -gt 0 ]; then
		echo "WARNING: Modifications (STEP 2) and this step should never" 1>&2
		echo "         ever be run with different configurations!" 1>&2
		echo "         This can result in invalid images!!!" 1>&2
	fi

	# Check if firmware is unpacked
	if [ ! -r "${DIR}/.unpacked" ]; then
		error 1 "firmware image has to be unpacked before packing"
	fi

	# Check if firmware is modified by the script
	if [ ! -r "${DIR}/.modified" ]; then
		warn "firmware does not seem to be modified by the script"

		if [ ! -d "$MOD_DIR" ]; then
			# Copy the unpacked directory
			cp -r "$ORG_DIR" "$MOD_DIR"
		fi
	fi

	# Remove left over Subversion directories
	echo1 "checking for left over Subversion directories"
	find "$MOD_DIR" -type d -name .svn | xargs rm -rf

	# Delete all files that we are going to re-create now
	rm -f "$VARTAR_MOD"
	rm -f "$KERNEL_MOD"
	rm -f "$FILESYSTEM_MOD"
	rm -f "${DIR}/*.image"

	if [ "$FREETZ_SQUASHFS_BLOCKSIZE_ORIG" == "y" ]; then
		FILESYSTEM_BLOCKSIZE="$((1<<$(od -i -N 1 -j 34 "$FILESYSTEM" | sed -n -e '1s#.* ##' -e 1p)))"
	else
		FILESYSTEM_BLOCKSIZE=$(set | sed -rn 's/FREETZ_SQUASHFS_BLOCKSIZE_([^=]+)=y/\1/p')
	fi

	modmakedate=$(date +%Y%m%d-%H%M%S)
	modbaseimagename="${FREETZ_TYPE_PREFIX_ALIEN_HARDWARE}${FREETZ_TYPE_PREFIX}_${FIRMWAREVERSION}${SUBVERSION}.${FREETZ_TYPE_LANGUAGE}"
	if [ "$FREETZ_CUSTOM_IMAGE_NAME" == "y" -a ! -z "$FREETZ_USER_DEFINED_COMMENT" ]; then
		modcustomimagestring=$(echo $FREETZ_USER_DEFINED_COMMENT | sed -e "s/ /_/g" | tr -cd 'a-zA-Z0-9_+-.<->')
	else
		modcustomimagestring=""
	fi
	if [ "$FREETZ_CUSTOM_IMAGE_NAME" == "y" -a ! -z "${modcustomimagestring}" ]; then
		if [ "$FREETZ_CUSTOM_IMAGE_NAME_PREFIX" == "y" ]; then
			modimagenameprefix="${modcustomimagestring}_"
			modimagenamesuffix=""
		else
			modimagenameprefix=""
			modimagenamesuffix="_${modcustomimagestring}"
		fi
	else
		modimagenameprefix=""
		modimagenamesuffix=""
	fi
	modimage="${modimagenameprefix}${modbaseimagename}${modimagenamesuffix}_$modmakedate.image"

	# Create freetz-info
	echo1 "integrate freetz info file into image"
	freetz_info_file="$MOD_DIR/filesystem/etc/freetz_info.cfg"
	echo "export FREETZ_INFO_BOXTYPE='${FREETZ_TYPE_PREFIX_ALIEN_HARDWARE}${FREETZ_TYPE_PREFIX}'" > "$freetz_info_file"
	echo "export FREETZ_INFO_FIRMWAREVERSION='${FIRMWAREVERSION}'" >> "$freetz_info_file"
	echo "export FREETZ_INFO_SUBVERSION='${SUBVERSION}'" >> "$freetz_info_file"
	echo "export FREETZ_INFO_LANG='${FREETZ_TYPE_LANGUAGE}'" >> "$freetz_info_file"
	echo "export FREETZ_INFO_MAKEDATE='$modmakedate'" >> "$freetz_info_file"
	echo "export FREETZ_INFO_IMAGE_NAME='$modimage'" >> "$freetz_info_file"
	echo "export FREETZ_INFO_COMMENT='${FREETZ_USER_DEFINED_COMMENT}'" >> "$freetz_info_file"
	externalised_files=$(find build/modified/external/ -type f 2>/dev/null | sed -e '/\.external/d;s,build/modified/external/,,')
	echo "export FREETZ_INFO_EXTERNAL_FILES='${externalised_files}'" >> "$freetz_info_file"

	# Pack var.tar (use old tar for compatibility)
	echo0 "packing var.tar"
	"$TAR" -c -C "$VARTAR_MOD_DIR" . > "$VARTAR_MOD" || exit 1

	if [ ! -s "$VARTAR_MOD" ]; then
		error 1 "packing of var.tar failed"
	fi
	# Do we have the tool ?
	if [ ! -x "$MKSQUASHFS" ]; then
		error 1 "cannot find $MKSQUASHFS_TOOL"
	fi

	echo0 "creating filesystem image"
	echo1 "squashfs blocksize: $FILESYSTEM_BLOCKSIZE"
	[ "$FREETZ_HAS_UDEV" == "y" ] || \
		$MAKEDEVS -d $MAKEDEVS_FILE $FILESYSTEM_MOD_DIR > $MOD_DIR/filesystem.log 2>&1
	$TOOLS_DIR/$MKSQUASHFS_TOOL $FILESYSTEM_MOD_DIR/* $ABS_BASE_DIR/$FILESYSTEM_MOD $MKSQUASHFS_OPTIONS -b $FILESYSTEM_BLOCKSIZE >> $MOD_DIR/filesystem.log 2>&1

	if [ ! -s "$FILESYSTEM_MOD" ]; then
		error 1 "creation of filesystem failed"
	fi

	echo0 "merging kernel image"
	dd if="$RAW_KERNEL_MOD" of="$KERNEL_MOD" bs=256 conv=sync 2> /dev/null
	cat "$FILESYSTEM_MOD" >> "$KERNEL_MOD"

	if [ ! -s "$KERNEL_MOD" ]; then
		error 1 "kernel merging failed"
	fi

	# Check size of kernel image
	let KERNEL_LIMIT="$FREETZ_KERNEL_MTD_SIZE*65536"
	let KERNEL_SIZE="$(wc -c < "$KERNEL_MOD")"
	let DIFF="KERNEL_SIZE-KERNEL_LIMIT"

	echo1 "kernel image size: $KERNEL_SIZE (max: $KERNEL_LIMIT, free: $((-DIFF)))"

	if [ "$KERNEL_SIZE" -eq 0 ]; then
		error 1 "kernel image is empty"
	fi
	if [ "$KERNEL_SIZE" -gt "$KERNEL_LIMIT" ]; then
		error 1 "kernel image is $DIFF bytes too big. See http://trac.freetz.org/wiki/FAQ#Filesystemimagetoobig for details."
	fi
	if [ "$FREETZ_VERBOSITY_LEVEL" -ge 1 ]; then
		if [ "$FREETZ_HAS_TAM" = "y" ]; then
			# Calculate aproximately free space in seconds for the answering machine
			FREE_BYTE_JFFS2=$((($KERNEL_LIMIT - $KERNEL_SIZE - 233472)))
			FREE_MINUTES=$((($FREE_BYTE_JFFS2 / 2017 / 60)))
			if [ "$FREE_BYTE_JFFS2" -gt 0 ]; then
				echo "${L1}Aproximately free time for the answering machine: $((($FREE_BYTE_JFFS2 / 2017)))s (${FREE_MINUTES}min $((($FREE_BYTE_JFFS2 / 2017 - $FREE_MINUTES * 60)))s)"
			else
				echo "${L1}WARNING: Not enough free flash space for answering machine!"
			fi
		fi
	fi
	# Do we have the tool ?
	if [ ! -x "$TICHKSUM" ]; then
		error 1 "cannot find wonderful tool $TICHKSUM_TOOL"
	fi

	# Write checksum
	"$TICHKSUM" "$KERNEL_MOD" > "${MOD_DIR}/kernelchksum.log"

	# Consistency check
	if [ -s "${FIRMWARE_DIR}/${KERNEL_IMAGE}" -a ! -s "${FIRMWARE_MOD_DIR}/${KERNEL_IMAGE}" ] || \
		[ ! -s "${FIRMWARE_DIR}/${KERNEL_IMAGE}" -a -s "${FIRMWARE_MOD_DIR}/${KERNEL_IMAGE}" ]
	then
		error 1 "inconsistency comparing size of old and new kernel.image"
	fi

	# Last, but not least, include .config and addon/static.pkg into firmware
	# image for further reference, e.g. user support
	[ -r "$DOT_CONFIG" ] && cp "$DOT_CONFIG" "$FIRMWARE_MOD_DIR/var"
	[ -r "$STATIC_ADDON_FILE" ] && cp "$STATIC_ADDON_FILE" "$FIRMWARE_MOD_DIR/var"
	[ -r "$PACKAGES_LIST_FILE" ] && cp "$PACKAGES_LIST_FILE" "$FIRMWARE_MOD_DIR/var"

	# Pack firmware image (use old tar for compatibility)
	echo0 "packing ${modimage}"
	"$TAR" -c -C "$FIRMWARE_MOD_DIR" . > "${DIR}/${modimage}" || exit 1

	if [ ! -s "${DIR}/${modimage}" ]; then
		rm -f "${DIR}/${modimage}"
		error 1 "packing of firmware image failed"
	fi

	if [ "$EXTERNAL_CREATEPAK" == "y" ] && [ -n "$externalised_files" ]; then
		modexternal="${modimagenameprefix}${modbaseimagename}${modimagenamesuffix}_$modmakedate.external"
		echo "packing ${modexternal}"
		"$TAR" -c -C "$EXTERNAL_MOD_DIR" . > "${DIR}/${modexternal}" || exit 1

		if [ ! -s "${DIR}/${modexternal}" ]; then
			rm -f "${DIR}/${modexternal}"
			error 1 "packing of external tar failed"
		fi
	fi
	if [ -s "${DIR}/${modimage}" ]; then
		echo0 "Image files can be found in the ./${FW_IMAGES_DIR}/ subfolder"
		if [ "$FREETZ_REPLACE_SSL_LIBS" == "y" ]; then
			[ "$FREETZ_LIB_libcrypto" == "y" -o "$FREETZ_LIB_libssl" == "y" ] && echo "Caution: Replacing libcrypto or libssl may cause an unusable image. See http://trac.freetz.org/wiki/FAQ#NachdemFlashenistdasAVM-Webinterfacenichtmehrerreichbar for details."
		fi
	fi
	echo0 "done."
	echo

	echo "${BOLD}FINISHED${NORM}"
fi

exit 0