function sma_waitforlisten() {
	local sma_addr=${1:-127.0.0.1}
	local sma_port=${2:-8080}

	for ((i = 0; i < 5; i++)); do
		if nc -z $sma_addr $sma_port; then
			return 0
		fi
		sleep 1s
	done
	return 1
}

function uuid2base64() {
	python <<- EOF
		import base64, uuid
		print(base64.b64encode(uuid.UUID("$1").bytes).decode())
	EOF
}

get_cipher() {
	case "$1" in
		AES_CBC) echo 0 ;;
		AES_XTS) echo 1 ;;
		*) echo "$1" ;;
	esac
}

format_key() {
	base64 <(echo -n "$1")
}

uuid2nguid() {
	# The NGUID returned by the RPC is UPPERCASE
	local uuid=${1^^}
	echo ${uuid//-/}
}