#!/usr/bin/env bash

CRYPTSETUP=/sbin/cryptsetup

LOOPDEV=/dev/vn1
DEV_NAME=dummy
DEV_NAME2=dummy2
ORIG_IMG=luks-test-orig
IMG=luks-test
IMG1=luks-test1
KEY1=key1

LUKS_HEADER="S0-5 S6-7 S8-39 S40-71 S72-103 S104-107 S108-111 R112-131 R132-163 S164-167 S168-207 A0-591"
KEY_SLOT0="S208-211 S212-215 R216-247 S248-251 S251-255"
KEY_MATERIAL0="R4096-68096"
KEY_MATERIAL0_EXT="R4096-68096"

KEY_SLOT1="S256-259 S260-263 R264-295 S296-299 S300-303"
KEY_MATERIAL1="R69632-133632"
KEY_MATERIAL1_EXT="S69632-133632"

function remove_mapping()
{
	[ -e /dev/mapper/$DEV_NAME2 ] && dmsetup remove $DEV_NAME2
	[ -e /dev/mapper/$DEV_NAME ] && dmsetup remove $DEV_NAME
	vnconfig -u $LOOPDEV >/dev/null 2>&1
#	losetup -d $LOOPDEV >/dev/null 2>&1
	rm -f $ORIG_IMG $IMG $IMG1 $KEY1 >/dev/null 2>&1
}

function fail()
{
	echo "last ret: $?"
	remove_mapping
	echo "FAILED"
	exit 2
}

function prepare()
{
	if [ $(id -u) != 0 ]; then
		echo "WARNING: You must be root to run this test, test skipped."
		exit 0
	fi

	[ -e /dev/mapper/$DEV_NAME ] && dmsetup remove $DEV_NAME

	if [ ! -e $KEY1 ]; then
		dd if=/dev/urandom of=$KEY1 count=1 bs=32 >/dev/null 2>&1
	fi

	if [ ! -e $IMG ]; then
		bzip2 -cd compatimage.img.bz2 > $IMG
		vnconfig -u $LOOPDEV >/dev/null 2>&1
		vnconfig -S labels -T $LOOPDEV $IMG
#		losetup -d $LOOPDEV >/dev/null 2>&1
#		losetup $LOOPDEV $IMG
	fi

	cp $IMG $ORIG_IMG

	echo "CASE: $1"
}

function check()
{
	sync
	sync
	sync
	./fileDiffer.py $IMG $ORIG_IMG $1|| fail
}

function check_exists()
{
	[ -e /dev/mapper/$DEV_NAME ] || fail
	check $1
}

# LUKS tests

prepare	"[1] open - compat image - acceptance check"
echo "compatkey" | $CRYPTSETUP luksOpen $LOOPDEV $DEV_NAME || fail
check_exists

prepare "[2] open - compat image - denial check"
echo "wrongkey" | $CRYPTSETUP luksOpen $LOOPDEV $DEV_NAME && fail
check

# All headers items and first key material section must change
prepare "[3] format"
echo "key0" | $CRYPTSETUP -i 1000 -c aes-cbc-essiv:sha256 -s 128 luksFormat $LOOPDEV || fail
check "$LUKS_HEADER $KEY_SLOT0 $KEY_MATERIAL0"

prepare "[4] format using hash sha512"
echo "key0" | $CRYPTSETUP -i 1000 -h sha512 -c aes-cbc-essiv:sha256 -s 128 luksFormat $LOOPDEV || fail
check "$LUKS_HEADER $KEY_SLOT0 $KEY_MATERIAL0"

prepare "[5] open"
echo "key0" | $CRYPTSETUP luksOpen $LOOPDEV $DEV_NAME || fail
check_exists

# Key Slot 1 and key material section 1 must change, the rest must not.
prepare "[6] add key"
echo -e "key0\nkey1" | $CRYPTSETUP luksAddKey $LOOPDEV || fail
check "$KEY_SLOT1 $KEY_MATERIAL1"
echo "key1" | $CRYPTSETUP luksOpen $LOOPDEV $DEV_NAME || fail

# Unsuccessful Key Delete - nothing may change
prepare "[7] unsuccessful delete"
echo "invalid" | $CRYPTSETUP luksDelKey $LOOPDEV 1 && fail
check

# Delete Key Test
# Key Slot 1 and key material section 1 must change, the rest must not
prepare "[8] successful delete"
$CRYPTSETUP -q luksDelKey $LOOPDEV 1 || fail
check "$KEY_SLOT1 $KEY_MATERIAL1_EXT"
echo "key1" | $CRYPTSETUP luksOpen $LOOPDEV $DEV_NAME && fail
echo "key0" | $CRYPTSETUP luksOpen $LOOPDEV $DEV_NAME || fail

# Key Slot 1 and key material section 1 must change, the rest must not
prepare "[9] add key test for key files"
echo "key0" | $CRYPTSETUP luksAddKey $LOOPDEV $KEY1 || fail
check "$KEY_SLOT1 $KEY_MATERIAL1"
$CRYPTSETUP -d $KEY1 luksOpen $LOOPDEV $DEV_NAME || fail

# Key Slot 1 and key material section 1 must change, the rest must not
prepare "[10] delete key test with key1 as remaining key"
$CRYPTSETUP -d $KEY1 luksDelKey $LOOPDEV 0 || fail
check "$KEY_SLOT0 $KEY_MATERIAL0_EXT"
echo "key0" | $CRYPTSETUP luksOpen $LOOPDEV $DEV_NAME && fail
$CRYPTSETUP luksOpen -d $KEY1 $LOOPDEV $DEV_NAME || fail

# Delete last slot
prepare "[11] delete last key"
echo "key0" | $CRYPTSETUP luksFormat $LOOPDEV || fail
echo "key0" | $CRYPTSETUP luksKillSlot $LOOPDEV 0 || fail
echo "key0" | $CRYPTSETUP luksOpen $LOOPDEV $DEV_NAME && fail

# Format test for ESSIV, and some other parameters.
prepare "[12] parameter variation test"
$CRYPTSETUP -q -i 1000 -c aes-cbc-essiv:sha256 -s 128 luksFormat $LOOPDEV $KEY1 || fail
check "$LUKS_HEADER $KEY_SLOT0 $KEY_MATERIAL0"
$CRYPTSETUP -d $KEY1 luksOpen $LOOPDEV $DEV_NAME || fail

prepare	"[13] open/close - stacked devices"
echo "key0" | $CRYPTSETUP -q luksFormat $LOOPDEV || fail
echo "key0" | $CRYPTSETUP -q luksOpen $LOOPDEV $DEV_NAME || fail
echo "key0" | $CRYPTSETUP -q luksFormat /dev/mapper/$DEV_NAME || fail
echo "key0" | $CRYPTSETUP -q luksOpen /dev/mapper/$DEV_NAME $DEV_NAME2 || fail
$CRYPTSETUP -q luksClose  $DEV_NAME2 || fail
$CRYPTSETUP -q luksClose  $DEV_NAME || fail

prepare	"[14] format/open - passphrase on stdin & new line"
# stdin defined by "-" must take even newline
echo -n $'foo\nbar' | $CRYPTSETUP -q luksFormat $LOOPDEV - || fail
echo -n $'foo\nbar' | $CRYPTSETUP -q --key-file=- luksOpen $LOOPDEV $DEV_NAME || fail
$CRYPTSETUP -q luksClose  $DEV_NAME || fail
echo -n $'foo\nbar' | $CRYPTSETUP -q luksOpen $LOOPDEV $DEV_NAME && fail
# now also try --key-file
echo -n $'foo\nbar' | $CRYPTSETUP -q luksFormat $LOOPDEV --key-file=- || fail
echo -n $'foo\nbar' | $CRYPTSETUP -q --key-file=- luksOpen $LOOPDEV $DEV_NAME || fail
$CRYPTSETUP -q luksClose  $DEV_NAME || fail
# process newline if from stdin
echo -n $'foo\nbar' | $CRYPTSETUP -q luksFormat $LOOPDEV || fail
echo 'foo' | $CRYPTSETUP -q luksOpen $LOOPDEV $DEV_NAME || fail
$CRYPTSETUP -q luksClose  $DEV_NAME || fail

remove_mapping
exit 0