tests/generators/generate-luks2-segment-wrong-backup-key-0.img.sh

   1 #!/bin/bash
   2
   3 . lib.sh
   4
   5 #
   6 # *** Description ***
   7 #
   8 # generate primary header with wrong backup segment id
   9 #
  10 # secondary header is corrupted on purpose as well
  11 #
  12
  13 # $1 full target dir
  14 # $2 full source luks2 image
  15
  16 function prepare()
  17 {
  18         cp $SRC_IMG $TGT_IMG
  19         test -d $TMPDIR || mkdir $TMPDIR
  20         read_luks2_json0 $TGT_IMG $TMPDIR/json0
  21         read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
  22         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
  23 }
  24
  25 function generate()
  26 {
  27         # create illegal backup segment key (used to be bug in 32bit implementations)
  28         json_str=$(jq -c '.segments[(.segments | length + 1 | tostring)] = { "type" : "linear", "offset" : "512", "size" : "512", "flags":["backup-x"]}' $TMPDIR/json0)
  29         test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
  30
  31         write_luks2_json "$json_str" $TMPDIR/json0
  32
  33         merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
  34         erase_checksum $TMPDIR/area0
  35         chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
  36         write_checksum $chks0 $TMPDIR/area0
  37         write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
  38         kill_bin_hdr $TMPDIR/hdr1
  39         write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
  40 }
  41
  42 function check()
  43 {
  44         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
  45         local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
  46         test "$str_res1" = "VACUUM" || exit 2
  47
  48         read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
  49         jq -c 'if .segments | length < 2
  50                then error("Unexpected segments count") else empty end' $TMPDIR/json_res0 || exit 5
  51 }
  52
  53 function cleanup()
  54 {
  55         rm -f $TMPDIR/*
  56         rm -fd $TMPDIR
  57 }
  58
  59 test $# -eq 2 || exit 1
  60
  61 TGT_IMG=$1/$(test_img_name $0)
  62 SRC_IMG=$2
  63
  64 prepare
  65 generate
  66 check
  67 cleanup