tests/generators/generate-luks2-missing-keyslot-referenced-in-token.img.sh

   1 #!/bin/bash
   2
   3 . lib.sh
   4
   5 #
   6 # *** Description ***
   7 #
   8 # generate primary header with missing keyslot object referenced
   9 # in token 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 < $TMPDIR/json0
  29         # add missing keyslot reference in keyslots array of token '0'
  30         json_str=$(jq -r -c -M 'def missks: getpath(["keyslots"]) | keys | max | tonumber + 1 | tostring;
  31               .tokens += {"0":{"type":"dummy","keyslots":[ "0", missks ]}}' $TMPDIR/json0)
  32         test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
  33
  34         write_luks2_json "$json_str" $TMPDIR/json0
  35
  36         merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
  37         erase_checksum $TMPDIR/area0
  38         chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
  39         write_checksum $chks0 $TMPDIR/area0
  40         write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
  41         kill_bin_hdr $TMPDIR/hdr1
  42         write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
  43 }
  44
  45 function check()
  46 {
  47         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
  48         local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
  49         test "$str_res1" = "VACUUM" || exit 2
  50
  51         read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
  52         chks_res0=$(read_sha256_checksum $TGT_IMG)
  53         test "$chks0" = "$chks_res0" || exit 2
  54         new_arr_len=$(jq -c -M '.tokens."0".keyslots | length' $TMPDIR/json_res0)
  55         test $new_arr_len -eq 2 || exit 2
  56 }
  57
  58 function cleanup()
  59 {
  60         rm -f $TMPDIR/*
  61         rm -fd $TMPDIR
  62 }
  63
  64 test $# -eq 2 || exit 1
  65
  66 TGT_IMG=$1/$(test_img_name $0)
  67 SRC_IMG=$2
  68
  69 prepare
  70 generate
  71 check
  72 cleanup