#!/bin/bash

. lib.sh

#
# *** Description ***
#
# generate header with well-formed json format
# where keyslot area object size is UINT64_MAX and will overflow with added length
#

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

function generate()
{
	json_str=$(jq -c '.keyslots."0"."area".size = "18446744073709551615"' $TMPDIR/json0)
	test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2

	write_luks2_json "$json_str" $TMPDIR/json0
	write_luks2_json "$json_str" $TMPDIR/json1

	lib_mangle_json_hdr0
	lib_mangle_json_hdr1
}

function check()
{
	lib_hdr0_checksum || exit 2
	lib_hdr1_checksum || exit 2

	read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
	jq -c 'if (.keyslots."0"."area".size != "18446744073709551615")
	       then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
}

lib_prepare $@
generate
check
lib_cleanup