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#!/bin/bash
. lib.sh
#
# *** Description ***
#
# generate header with malformed json but correct checksum in primary header
#
# $1 full target dir
# $2 full source luks2 image
function generate()
{
read -r json_str < $TMPDIR/json0
json_len=${#json_str}
json_len=$((json_len-1)) # to replace json closing '}'
json_new_str="${json_str:0:json_len},\""
while [ ${#json_new_str} -le $((LUKS2_JSON_SIZE*512)) ]; do
json_new_str=$json_new_str"all_work_and_no_play_makes_Jack_a_dull_boy_"
done
printf "%s" $json_new_str | _dd of=$TMPDIR/json0 bs=512 count=$LUKS2_JSON_SIZE
lib_mangle_json_hdr0
}
function check()
{
lib_hdr0_checksum || exit 2
read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
read -r json_str_res0 < $TMPDIR/json_res0
test ${#json_str_res0} -eq $((LUKS2_JSON_SIZE*512)) || exit 2
}
lib_prepare $@
generate
check
lib_cleanup
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