From e8e805dfd3fc937e63795e2118a68db7a73c7521 Mon Sep 17 00:00:00 2001
From: Milan Broz <gmazyland@gmail.com>
Date: Sun, 19 Dec 2010 21:17:36 +0000
Subject: [PATCH] Add simple checksum test.

git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@402 36d66b0a-2a48-0410-832c-cd162a569da5
---
 tests/mode-test | 54 +++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 39 insertions(+), 15 deletions(-)

diff --git a/tests/mode-test b/tests/mode-test
index 41872ef..9a8fe61 100755
--- a/tests/mode-test
+++ b/tests/mode-test
@@ -1,11 +1,7 @@
 #!/bin/bash
-
 #
 # Test mode compatibility, check input + kernel and cryptsetup cipher status
 #
-# FIXME: add checkum test of data
-#
-
 CRYPTSETUP=../src/cryptsetup
 DEV_NAME=dmc_test
 LOOPDEV=/dev/loop5
@@ -46,46 +42,74 @@ dmcrypt_check() # device outstring
 {
 	X=$(dmsetup table $1 2>/dev/null | cut -d' '  -f 4)
 	if [ $X = $2 ] ; then
-		echo -n "OK]"
+		echo -n "[table OK]"
 	else
-		echo -n "FAIL]"
+		echo "[table FAIL]"
 		echo " Expecting $2 got $X."
 		fail
 	fi
 
 	X=$($CRYPTSETUP status $1 | grep cipher | sed s/\.\*cipher:\\s*//)
 	if [ $X = $2 ] ; then
-		echo " [OK]"
+		echo -n "[status OK]"
 	else
-		echo " [FAIL]"
+		echo "[status FAIL]"
 		echo " Expecting $2 got $X."
 		fail
 	fi
+
+	dmsetup remove $1 >/dev/null 2>&1
+}
+
+dmcrypt_check_sum() # cipher device outstring
+{
+	EXPSUM="c036cbb7553a909f8b8877d4461924307f27ecb66cff928eeeafd569c3887e29"
+	# Fill device with zeroes and reopen it
+	dd if=/dev/zero of=/dev/mapper/$2 bs=1M count=6 >/dev/null 2>&1
+	sync
+	dmsetup remove $2
+	echo $PASSWORD | $CRYPTSETUP create -c $1 -s 256 $2 /dev/mapper/$DEV_NAME >/dev/null 2>&1
+	ret=$?
+	VSUM=$(sha256sum /dev/mapper/$2 | cut -d' ' -f 1)
+	if [ $ret -eq 0 -a "$VSUM" = "$EXPSUM" ] ; then
+		echo -n "[OK]"
+	else
+		echo "[FAIL]"
+		echo " Expecting $EXPSUM got $VSUM."
+		fail
+	fi
+
+	dmsetup remove $2 >/dev/null 2>&1
 }
 
 dmcrypt()
 {
 	OUT=$2
 	[ -z "$OUT" ] && OUT=$1
+	printf "%-25s" "$1"
 
-	echo -n -e "TESTING(PLAIN): $1 ["
 	echo $PASSWORD | $CRYPTSETUP create -c $1 -s 256 "$DEV_NAME"_"$1" /dev/mapper/$DEV_NAME >/dev/null 2>&1
 	if [ $? -eq 0 ] ; then
+		echo -n -e "PLAIN:"
 		dmcrypt_check "$DEV_NAME"_"$1" $OUT
-		dmsetup remove "$DEV_NAME"_"$1" >/dev/null 2>&1
 	else
-		echo "SKIPPED]"
+		echo -n "[n/a]"
 	fi
 
-	echo -n -e "TESTING(LUKS): $1 ["
 	echo $PASSWORD | $CRYPTSETUP luksFormat -i 1 -c $1 -s 256 /dev/mapper/$DEV_NAME >/dev/null 2>&1
 	if [ $? -eq 0 ] ; then
+		echo -n -e " LUKS:"
 		echo $PASSWORD | $CRYPTSETUP luksOpen /dev/mapper/$DEV_NAME "$DEV_NAME"_"$1" >/dev/null 2>&1
 		dmcrypt_check "$DEV_NAME"_"$1" $OUT
-		dmsetup remove "$DEV_NAME"_"$1" >/dev/null 2>&1
-	else
-		echo "SKIPPED]"
 	fi
+
+	# repeated device creation must return the same checksum
+	echo $PASSWORD | $CRYPTSETUP create -c $1 -s 256 "$DEV_NAME"_"$1" /dev/mapper/$DEV_NAME >/dev/null 2>&1
+	if [ $? -eq 0 ] ; then
+		echo -n -e " CHECKSUM:"
+		dmcrypt_check_sum "$1" "$DEV_NAME"_"$1"
+	fi
+	echo
 }
 
 if [ $(id -u) != 0 ]; then
-- 
2.7.4