#!/bin/sh

# ------------------------------------------------------------
# opensecurity package file
#
# Autor: X-Net Services GmbH <office@x-net.at>
#
# Copyright 2013-2014 X-Net and AIT Austrian Institute of Technology
#
#
#     X-Net Technologies GmbH
#     Elisabethstrasse 1
#     4020 Linz
#     AUSTRIA
#     https://www.x-net.at
#
#     AIT Austrian Institute of Technology
#     Donau City Strasse 1
#     1220 Wien
#     AUSTRIA
#     http://www.ait.ac.at
#
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ------------------------------------------------------------

DEVICE="$1"

# This script makes sure that the stick is unmounted and unused
# Run this Script before the init process

# make sure to have "/dev/sdb" (not "/dev/sdb1")
#DEVICE="${DEVICE:0:8}" the bash way does not work in dash -.-
DEVICE="$(echo "$DEVICE" | awk '{print substr($1,0,9)}')"

# make sure the device is not mounted
chattr -i "/tmp/usbmount"
umount /tmp/usbmount/*
sleep 1
rmdir /tmp/usbmount/*
umount /media/usb*

# sometimes the umount fails with device bussy -> unknown why
# so try until it works
counter=0
while ( [ -n "$(mount | grep "$DEVICE" | head -n 1 | awk '{print $3}')" ] && [ $counter -lt 10 ] )
do
	sleep 1
	umount "$(mount | grep "$DEVICE" | head -n 1 | awk '{print $3}')"
	counter=$((counter + 1))
done



# search for already encrypted volumes
device=$(encryptionprovider.py -g)

if [ "$?" = "0" ]
then
	encryptionprovider.py -u $device
fi