#!/bin/bash
# https://wiki.ubuntuusers.de/Archiv/LUKS/Schl%C3%BCsseldatei/
#-------------------------------------------------------------
# LUKS Crypto Datenträger per Script öffnen und schliessen
#-------------------------------------------------------------
if [ $# = 0 ]; then
	echo "Usage: cryptdisk.sh (open|close)"
	exit 0
fi

DID=$(blkid -t TYPE=crypto_LUKS -o value -s PARTUUID)

open() {
	echo "Open Crypto Disk with PARTUUID: $DID"
	cryptsetup luksOpen /dev/disk/by-partuuid/$DID crypt_$DID --key-file /etc/.luks-keys/$DID.key
	mount /dev/mapper/crypt_$DID /mnt/crypt-disk
}

close() {
	echo "Close Crypto Disk with PARTUUID: $DID"
	umount /dev/mapper/crypt_$DID
	cryptsetup luksClose $DID
}

if [ $1 = "open" ]; then
	open
elif [ $1 = "close" ]; then
	close
fi