tests/generators/generate-luks2-uint64-overflow-segment-size.img.sh

   1 #!/bin/bash
   2
   3 . lib.sh
   4
   5 #
   6 # *** Description ***
   7 #
   8 # generate primary header with segment size set to UINT64_MAX + 1
   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 $TMPDIR/hdr1
  23 }
  24
  25 function generate()
  26 {
  27         json_str=$(jq -c '.segments."0".size = "18446744073709551616"' $TMPDIR/json0)
  28         test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
  29
  30         write_luks2_json "$json_str" $TMPDIR/json0
  31
  32         merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
  33         erase_checksum $TMPDIR/area0
  34         chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
  35         write_checksum $chks0 $TMPDIR/area0
  36         write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
  37         kill_bin_hdr $TMPDIR/hdr1
  38         write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
  39 }
  40
  41 function check()
  42 {
  43         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
  44         local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
  45         test "$str_res1" = "VACUUM" || exit 2
  46
  47         read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
  48         jq -c 'if .segments."0".size != "18446744073709551616"
  49                then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
  50 }
  51
  52 function cleanup()
  53 {
  54         rm -f $TMPDIR/*
  55         rm -fd $TMPDIR
  56 }
  57
  58 test $# -eq 2 || exit 1
  59
  60 TGT_IMG=$1/$(test_img_name $0)
  61 SRC_IMG=$2
  62
  63 prepare
  64 generate
  65 check
  66 cleanup