8 # generate header with correct json of maximal size in primary slot.
9 # Secondary header is broken on purpose.
13 # $2 full source luks2 image
15 PATTERN="\"config\":{"
16 KEY="\"config_key\":\""
20 read -r json_str < $TMPDIR/json0
22 pindex=$(strindex $json_str $PATTERN)
23 test $pindex -gt 0 || exit 2
26 offset=$((offset+pindex))
28 remain=$((LUKS2_JSON_SIZE*512-json_len-key_len-2)) # -2: closing '"' and terminating '\0'
29 if [ ${json_str:offset:1} = "}" ]; then
33 remain=$((remain-1)) # also count with separating ','
35 test $remain -gt 0 || exit 2
37 fill=$(repeat_str "X" $remain)"\""
39 printf $format_str $KEY $fill ${json_str:$offset} | _dd of=$TMPDIR/json0 bs=1 seek=$offset conv=notrunc
41 lib_mangle_json_hdr0_kill_hdr1
46 lib_hdr1_killed || exit 2
47 lib_hdr0_checksum || exit 2
49 read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
50 #json_str_res0=$(< $TMPDIR/json_res0)
51 read -r json_str_res0 < $TMPDIR/json_res0
52 test ${#json_str_res0} -eq $((LUKS2_JSON_SIZE*512-1)) || exit 2