#
# common settings and functions for cryptobox scripts
#

#################### some functions ####################

# get the path of a configuration file - local configuration files
# supersede default files
# parameter: base name of the configuration file
function get_config_file()
{
	[ -e "$LOCALCONF_DIR/$1" ] && echo "$LOCALCONF_DIR/$1" && return 0
	[ -e "$DEFAULTCONF_DIR/$1" ] && echo "$DEFAULTCONF_DIR/$1" && return 0
	echo "configuration file ($1) not found!" >&2
	exit 1
}

function error_die()
{
	echo "$2" >&2
	exit $1
}

function chroot_image()
{
	MNT_SRC=$IMAGE_DIR/opt/dfsruntime/runtimerd
	MNT_DST=$IMAGE_DIR/opt/dfsruntime/runtimemnt
	TMP_DIR=/tmp/cryptobox-chroot-$(basename $0)-$$
	[ -d "$TMP_DIR" ] && rm -rf "$TMP_DIR"

	cp -a "$MNT_SRC/." "$TMP_DIR"
	mount --bind "$TMP_DIR" "$MNT_DST"

	[ ! -e "$TMP_DIR/dev/null" ] && mknod "$TMP_DIR/dev/null" c 1 3 && chmod 666 "$TMP_DIR/dev/null"
	[ ! -e "$TMP_DIR/dev/urandom" ] && mknod "$TMP_DIR/dev/urandom" c 1 9 && chmod 444 "$TMP_DIR/dev/urandom"
	[ ! -e "$TMP_DIR/dev/console" ] && mknod "$TMP_DIR/dev/console" c 1 5 && chmod 660 "$TMP_DIR/dev/console"

	# remember, if proc was mounted before (e.g. because of a running chroot)
	local PROC_WAS_MOUNTED=no
	mount -t proc proc "$IMAGE_DIR/proc" 2>/dev/null || PROC_WAS_MOUNTED=yes

	# default language setting - prevents dpkg error messages
	# set default terminal (good if you are running in a screen session)
	LANG=C TERM=linux chroot "$IMAGE_DIR" /bin/bash

	umount "$MNT_DST"
	[ "$PROC_WAS_MOUNTED" = "no" ] && umount "$IMAGE_DIR/proc"
	rm -r "$TMP_DIR"
}

################### general settings ###################

# the base directory of your local development files
ROOT_DIR=$(dirname "$0")/..
ROOT_DIR=$(cd "$ROOT_DIR"; pwd)

# the template (default) configuration directory
DEFAULTCONF_DIR="$ROOT_DIR/etc-defaults.d"

# your local configuration directory (existing files supersede the defaults)
LOCALCONF_DIR="$ROOT_DIR/etc-local.d"

# local configuration directory - contains scripts to be executed after
# 'configure'
CUSTOM_CONFIGURE_DIR="$ROOT_DIR/configure-local.d"

# the chroot-wrapper within the cryptobox
CHROOT_START="/usr/lib/cryptobox-cd/chroot-start.sh"


############# include local configuration ##############

if [ -e "$(get_config_file cbox-dev.conf)" ]
	then	source "$(get_config_file cbox-dev.conf)"
	else	echo "local cbox-dev.conf ($(get_config_file cbox-dev.conf)) does not exist!" >&2
		exit 1
  fi

# image directory created by dfsbuild
# the BUILD_DIR is defined in the local cbox-dev.conf
IMAGE_DIR=$BUILD_DIR/target
IMAGEZ_DIR=$BUILD_DIR/target.z
IMAGEZ_FILE="${IMAGE_FILE%.iso}_compressed.iso"
UNCOMPRESSED_ITEMS="_offline autorun.inf start.html boot opt boot.catalog"

HD_IMAGE=$ROOT_DIR/test.img
HD_IMAGE_SIZE=256