Adding upstream version 2:2.6.1.upstream/2%2.6.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 283 insertions, 0 deletions

diff --git a/tests/generators/lib.sh b/tests/generators/lib.sh
new file mode 100644
index 0000000..c0e9cc1
--- /dev/null
+++ b/tests/generators/lib.sh
@@ -0,0 +1,283 @@
+#!/bin/bash
+
+# all in 512 bytes blocks (including binary hdr (4KiB))
+LUKS2_HDR_SIZE=32		#  16 KiB
+LUKS2_HDR_SIZE_32K=64		#  32 KiB
+LUKS2_HDR_SIZE_64K=128		#  64 KiB
+LUKS2_HDR_SIZE_128K=256		# 128 KiB
+LUKS2_HDR_SIZE_256K=512		# 256 KiB
+LUKS2_HDR_SIZE_512K=1024	# 512 KiB
+LUKS2_HDR_SIZE_1M=2048		#   1 MiB
+LUKS2_HDR_SIZE_2M=4096		#   2 MiB
+LUKS2_HDR_SIZE_4M=8192		#   4 MiB
+
+LUKS2_BIN_HDR_SIZE=8		#   4 KiB
+LUKS2_JSON_SIZE=$((LUKS2_HDR_SIZE-LUKS2_BIN_HDR_SIZE))
+
+LUKS2_BIN_HDR_CHKS_OFFSET=0x1C0
+LUKS2_BIN_HDR_CHKS_LENGTH=64
+
+[ -z "$srcdir" ] && srcdir="."
+TMPDIR=$srcdir/tmp
+
+# to be set by individual generator
+TGT_IMG=""
+SRC_IMG=""
+
+repeat_str() {
+	printf "$1"'%.0s' $(eval "echo {1.."$(($2))"}");
+}
+
+function strindex()
+{
+	local x="${1%%$2*}"
+	[[ $x = $1 ]] && echo -1 || echo ${#x}
+}
+
+function test_img_name()
+{
+	local str=$(basename $1)
+	str=${str#generate-}
+	str=${str%%.sh}
+	echo $str
+}
+
+# read primary bin hdr
+# 1:from 2:to
+function read_luks2_bin_hdr0()
+{
+	_dd if=$1 of=$2 bs=512 count=$LUKS2_BIN_HDR_SIZE
+}
+
+# read primary json area
+# 1:from 2:to 3:[json only size (defaults to 12KiB)]
+function read_luks2_json0()
+{
+	local _js=${4:-$LUKS2_JSON_SIZE}
+	local _js=$((_js*512/4096))
+	_dd if=$1 of=$2 bs=4096 skip=1 count=$_js
+}
+
+# read secondary bin hdr
+# 1:from 2:to 3:[metadata size (defaults to 16KiB)]
+function read_luks2_bin_hdr1()
+{
+	_dd if=$1 of=$2 skip=${3:-$LUKS2_HDR_SIZE} bs=512 count=$LUKS2_BIN_HDR_SIZE
+}
+
+# read secondary json area
+# 1:from 2:to 3:[json only size (defaults to 12KiB)]
+function read_luks2_json1()
+{
+	local _js=${3:-$LUKS2_JSON_SIZE}
+	_dd if=$1 of=$2 bs=512 skip=$((2*LUKS2_BIN_HDR_SIZE+_js)) count=$_js
+}
+
+# read primary metadata area (bin + json)
+# 1:from 2:to 3:[metadata size (defaults to 16KiB)]
+function read_luks2_hdr_area0()
+{
+	local _as=${3:-$LUKS2_HDR_SIZE}
+	local _as=$((_as*512))
+	_dd if=$1 of=$2 bs=$_as count=1
+}
+
+# read secondary metadata area (bin + json)
+# 1:from 2:to 3:[metadata size (defaults to 16KiB)]
+function read_luks2_hdr_area1()
+{
+	local _as=${3:-$LUKS2_HDR_SIZE}
+	local _as=$((_as*512))
+	_dd if=$1 of=$2 bs=$_as skip=1 count=1
+}
+
+# write secondary bin hdr
+# 1:from 2:to 3:[metadata size (defaults to 16KiB)]
+function write_luks2_bin_hdr1()
+{
+	_dd if=$1 of=$2 bs=512 seek=${3:-$LUKS2_HDR_SIZE} count=$LUKS2_BIN_HDR_SIZE conv=notrunc
+}
+
+# write primary metadata area (bin + json)
+# 1:from 2:to 3:[metadata size (defaults to 16KiB)]
+function write_luks2_hdr0()
+{
+	local _as=${3:-$LUKS2_HDR_SIZE}
+	local _as=$((_as*512))
+	_dd if=$1 of=$2 bs=$_as count=1 conv=notrunc
+}
+
+# write secondary metadata area (bin + json)
+# 1:from 2:to 3:[metadata size (defaults to 16KiB)]
+function write_luks2_hdr1()
+{
+	local _as=${3:-$LUKS2_HDR_SIZE}
+	local _as=$((_as*512))
+	_dd if=$1 of=$2 bs=$_as seek=1 count=1 conv=notrunc
+}
+
+# write json (includes padding)
+# 1:json_string 2:to 3:[json size (defaults to 12KiB)]
+function write_luks2_json()
+{
+	local _js=${3:-$LUKS2_JSON_SIZE}
+	local len=${#1}
+	echo -n -E "$1" > $2
+	truncate -s $((_js*512)) $2
+}
+
+function kill_bin_hdr()
+{
+	printf "VACUUM" | _dd of=$1 bs=1 conv=notrunc
+}
+
+function erase_checksum()
+{
+	_dd if=/dev/zero of=$1 bs=1 seek=$(printf %d $LUKS2_BIN_HDR_CHKS_OFFSET) count=$LUKS2_BIN_HDR_CHKS_LENGTH conv=notrunc
+}
+
+function read_sha256_checksum()
+{
+	_dd if=$1 bs=1 skip=$(printf %d $LUKS2_BIN_HDR_CHKS_OFFSET) count=32 | xxd -c 32 -p
+}
+
+# 1 - string with checksum
+function write_checksum()
+{
+	test $# -eq 2 || return 1
+	test $((${#1}/2)) -le $LUKS2_BIN_HDR_CHKS_LENGTH || { echo "too long"; return 1; }
+
+	echo $1 | xxd -r -p | _dd of=$2 bs=1 seek=$(printf %d $LUKS2_BIN_HDR_CHKS_OFFSET) conv=notrunc
+}
+
+function calc_sha256_checksum_file()
+{
+	sha256sum $1 | cut -d ' ' -f 1
+}
+
+function calc_sha256_checksum_stdin()
+{
+	sha256sum - | cut -d ' ' -f 1
+}
+
+# merge bin hdr with json to form metadata area
+# 1:bin_hdr 2:json 3:to 4:[json size (defaults to 12KiB)]
+function merge_bin_hdr_with_json()
+{
+	local _js=${4:-$LUKS2_JSON_SIZE}
+	local _js=$((_js*512/4096))
+	_dd if=$1 of=$3 bs=4096 count=1
+	_dd if=$2 of=$3 bs=4096 seek=1 count=$_js
+}
+
+function _dd()
+{
+	dd $@ status=none
+}
+
+function write_bin_hdr_size() {
+	printf '%016x' $2 | xxd -r -p -l 16 | _dd of=$1 bs=8 count=1 seek=1 conv=notrunc
+}
+
+function write_bin_hdr_offset() {
+	printf '%016x' $2 | xxd -r -p -l 16 | _dd of=$1 bs=8 count=1 seek=32 conv=notrunc
+}
+
+# generic header helpers
+# $TMPDIR/json0 - JSON hdr1
+# $TMPDIR/json1 - JSON hdr2
+# $TMPDIR/hdr0  - bin hdr1
+# $TMPDIR/hdr1  - bin hdr2
+
+# 1:target_dir 2:source_image
+function lib_prepare()
+{
+	test $# -eq 2 || exit 1
+
+	TGT_IMG=$1/$(test_img_name $0)
+	SRC_IMG=$2
+
+	# wipe checksums
+	CHKS0=0
+	CHKS1=0
+
+	cp $SRC_IMG $TGT_IMG
+	test -d $TMPDIR || mkdir $TMPDIR
+	read_luks2_json0 $TGT_IMG $TMPDIR/json0
+	read_luks2_json1 $TGT_IMG $TMPDIR/json1
+	read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
+	read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
+}
+
+function lib_cleanup()
+{
+	rm -f $TMPDIR/*
+	rm -fd $TMPDIR
+}
+
+function lib_mangle_json_hdr0()
+{
+	local mda_sz=${1:-}
+	local jsn_sz=${2:-}
+	local kill_hdr=${3:-}
+
+	merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0 $jsn_sz
+	erase_checksum $TMPDIR/area0
+	CHKS0=$(calc_sha256_checksum_file $TMPDIR/area0)
+	write_checksum $CHKS0 $TMPDIR/area0
+	test -n "$kill_hdr" && kill_bin_hdr $TMPDIR/area0
+	write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG $mda_sz
+}
+
+function lib_mangle_json_hdr1()
+{
+	local mda_sz=${1:-}
+	local jsn_sz=${2:-}
+	local kill_hdr=${3:-}
+
+	merge_bin_hdr_with_json $TMPDIR/hdr1 $TMPDIR/json1 $TMPDIR/area1 $jsn_sz
+	erase_checksum $TMPDIR/area1
+	CHKS1=$(calc_sha256_checksum_file $TMPDIR/area1)
+	write_checksum $CHKS1 $TMPDIR/area1
+	test -n "$kill_hdr" && kill_bin_hdr $TMPDIR/area1
+	write_luks2_hdr1 $TMPDIR/area1 $TGT_IMG $mda_sz
+}
+
+function lib_mangle_json_hdr0_kill_hdr1()
+{
+	lib_mangle_json_hdr0
+
+	kill_bin_hdr $TMPDIR/hdr1
+	write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
+}
+
+function lib_hdr0_killed()
+{
+	local mda_sz=${1:-}
+
+	read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr_res0 $mda_sz
+	local str_res0=$(head -c 6 $TMPDIR/hdr_res0)
+	test "$str_res0" = "VACUUM"
+}
+
+function lib_hdr1_killed()
+{
+	local mda_sz=${1:-}
+
+	read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1 $mda_sz
+	local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
+	test "$str_res1" = "VACUUM"
+}
+
+function lib_hdr0_checksum()
+{
+	local chks_res0=$(read_sha256_checksum $TGT_IMG)
+	test "$CHKS0" = "$chks_res0"
+}
+
+function lib_hdr1_checksum()
+{
+	read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
+	local chks_res1=$(read_sha256_checksum $TMPDIR/hdr_res1)
+	test "$CHKS1" = "$chks_res1"
+}