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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 prepare()
{
cp $SRC_IMG $TGT_IMG
test -d $TMPDIR || mkdir $TMPDIR
read_luks2_json0 $TGT_IMG $TMPDIR/json0
read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
}
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
merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
erase_checksum $TMPDIR/area0
chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
write_checksum $chks0 $TMPDIR/area0
write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
}
function check()
{
chks_res0=$(read_sha256_checksum $TGT_IMG)
test "$chks0" = "$chks_res0" || 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
}
function cleanup()
{
rm -f $TMPDIR/*
rm -fd $TMPDIR
}
test $# -eq 2 || exit 1
TGT_IMG=$1/$(test_img_name $0)
SRC_IMG=$2
prepare
generate
check
cleanup
|
