tests/generators/generate-luks2-overlapping-areas-c0-json0.img.sh

   1 #!/bin/bash
   2
   3 . lib.sh
   4
   5 #
   6 # *** Description ***
   7 #
   8 # generate primary header with two exactly same areas in terms of 'offset' and 'length'.
   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 $TMPDIR/hdr1
  23 }
  24
  25 function generate()
  26 {
  27         # copy area 6 offset and length into area 7
  28         json_str=$(jq -c '.keyslots."7".area.offset = .keyslots."6".area.offset |
  29                .keyslots."7".area.size = .keyslots."6".area.size' $TMPDIR/json0)
  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 (.keyslots."6".area.offset != .keyslots."7".area.offset) or (.keyslots."6".area.size != .keyslots."7".area.size)
  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