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#!/bin/bash
. lib.sh
#
# *** Description ***
#
# generate primary header with one area included within another one (in terms of 'offset' + 'length')
#
# secondary header is corrupted on purpose as well
#
# $1 full target dir
# $2 full source luks2 image
function generate()
{
# make area 7 being included in area 6
json_str=$(jq -c '.keyslots."7".area.offset = (.keyslots."6".area.offset | tonumber + 1 | tostring ) |
.keyslots."7".area.size = ( .keyslots."6".area.size | tonumber - 1 | tostring)' $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 'if (.keyslots."7".area.offset != (.keyslots."6".area.offset | tonumber + 1 | tostring)) or
(.keyslots."7".area.size != (.keyslots."6".area.size | tonumber - 1 | tostring)) or
(.keyslots."7".area.size | tonumber <= 0)
then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
}
lib_prepare $@
generate
check
lib_cleanup
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