tests/generators/generate-luks2-missing-segment-referenced-in-digest.img.sh

   1 #!/bin/bash
   2
   3 . lib.sh
   4
   5 #
   6 # *** Description ***
   7 #
   8 # generate primary header with missing segment object referenced
   9 # in digest object
  10 #
  11 # secondary header is corrupted on purpose as well
  12 #
  13
  14 # $1 full target dir
  15 # $2 full source luks2 image
  16
  17 function prepare()
  18 {
  19         cp $SRC_IMG $TGT_IMG
  20         test -d $TMPDIR || mkdir $TMPDIR
  21         read_luks2_json0 $TGT_IMG $TMPDIR/json0
  22         read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
  23         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
  24 }
  25
  26 function generate()
  27 {
  28         read -r json_str_orig < $TMPDIR/json0
  29         arr_len=$(jq -c -M '.digests."0".segments | length' $TMPDIR/json0)
  30         # add missing keyslot reference in keyslots array of digest '0'
  31         json_str=$(jq -c 'def arr: ["digests", "0", "segments"];
  32                def missseg: getpath(["segments"]) | keys | max | tonumber + 1 | tostring;
  33                setpath(arr; getpath(arr) + [ missseg ])' $TMPDIR/json0)
  34         test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
  35
  36         write_luks2_json "$json_str" $TMPDIR/json0
  37
  38         merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
  39         erase_checksum $TMPDIR/area0
  40         chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
  41         write_checksum $chks0 $TMPDIR/area0
  42         write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
  43         kill_bin_hdr $TMPDIR/hdr1
  44         write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
  45 }
  46
  47 function check()
  48 {
  49         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
  50         local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
  51         test "$str_res1" = "VACUUM" || exit 2
  52
  53         read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
  54         chks_res0=$(read_sha256_checksum $TGT_IMG)
  55         test "$chks0" = "$chks_res0" || exit 2
  56         new_arr_len=$(jq -c -M '.digests."0".segments | length' $TMPDIR/json_res0)
  57         test $((arr_len+1)) -eq $new_arr_len || exit 2
  58 }
  59
  60 function cleanup()
  61 {
  62         rm -f $TMPDIR/*
  63         rm -fd $TMPDIR
  64 }
  65
  66 test $# -eq 2 || exit 1
  67
  68 TGT_IMG=$1/$(test_img_name $0)
  69 SRC_IMG=$2
  70
  71 prepare
  72 generate
  73 check
  74 cleanup