tests/generators/generate-luks2-invalid-keyslots-size-c2.img.sh

   1 #!/bin/bash
   2
   3 . lib.sh
   4
   5 #
   6 # *** Description ***
   7 #
   8 # generate primary header with keyslots_size less than sum of all keyslots area
   9 # in json
  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 $TMPDIR/hdr1
  24 }
  25
  26 function generate()
  27 {
  28         json_str=$(jq '.config.keyslots_size = ([.keyslots[].area.size] | map(tonumber) | add - 4096 | tostring )' $TMPDIR/json0)
  29         test -n "$json_str" || exit 2
  30         test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
  31
  32         write_luks2_json "$json_str" $TMPDIR/json0
  33
  34         merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
  35         erase_checksum $TMPDIR/area0
  36         chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
  37         write_checksum $chks0 $TMPDIR/area0
  38         write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
  39         kill_bin_hdr $TMPDIR/hdr1
  40         write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
  41 }
  42
  43 function check()
  44 {
  45         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
  46         local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
  47         test "$str_res1" = "VACUUM" || exit 2
  48
  49         read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
  50         jq -c 'if .config.keyslots_size != ([.keyslots[].area.size ] | map(tonumber) | add - 4096 | tostring)
  51                then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
  52 }
  53
  54 function cleanup()
  55 {
  56         rm -f $TMPDIR/*
  57         rm -fd $TMPDIR
  58 }
  59
  60 test $# -eq 2 || exit 1
  61
  62 TGT_IMG=$1/$(test_img_name $0)
  63 SRC_IMG=$2
  64
  65 prepare
  66 generate
  67 check
  68 cleanup