#!/bin/bash

. lib.sh

#
# *** Description ***
#
# generate primary header with one area accessing luks
# header space
#
# secondary header is corrupted on purpose as well
#

# $1 full target dir
# $2 full source luks2 image

function generate()
{
	# make area 7 access the luks2 header space
	OFFS=$((2*LUKS2_HDR_SIZE*512-1))
	LEN=1
	json_str=$(jq -c --arg off $OFFS --arg len $LEN \
		   '.keyslots."0".area.offset = $off | .keyslots."0".area.size = $len' $TMPDIR/json0)
	test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2

	write_luks2_json "$json_str" $TMPDIR/json0

	lib_mangle_json_hdr0_kill_hdr1
}

function check()
{
	lib_hdr1_killed || exit 2

	read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
	jq -c --arg off $OFFS --arg len $LEN \
	    'if (.keyslots."0".area.offset != $off) or (.keyslots."0".area.size != $len)
	       then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
}

lib_prepare $@
generate
check
lib_cleanup