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

   1 #!/bin/bash
   2
   3 . lib.sh
   4
   5 #
   6 # *** Description ***
   7 #
   8 # generate primary header with config json size mismatching
   9 # value in binary header
  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 $TMPDIR/hdr1
  24 }
  25
  26 function generate()
  27 {
  28         JS=$(((LUKS2_HDR_SIZE-LUKS2_BIN_HDR_SIZE)*512))
  29         TEST_MDA_SIZE=$LUKS2_HDR_SIZE_32K
  30         TEST_MDA_SIZE_BYTES=$((TEST_MDA_SIZE*512))
  31         TEST_JSN_SIZE=$((TEST_MDA_SIZE-LUKS2_BIN_HDR_SIZE))
  32
  33         json_str=$(jq -c '.' $TMPDIR/json0)
  34
  35         write_luks2_json "$json_str" $TMPDIR/json0 $TEST_JSN_SIZE
  36
  37         write_bin_hdr_size $TMPDIR/hdr0 $TEST_MDA_SIZE_BYTES
  38         write_bin_hdr_size $TMPDIR/hdr1 $TEST_MDA_SIZE_BYTES
  39         write_bin_hdr_offset $TMPDIR/hdr1 $TEST_MDA_SIZE_BYTES
  40
  41         merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0 $TEST_JSN_SIZE
  42         merge_bin_hdr_with_json $TMPDIR/hdr1 $TMPDIR/json0 $TMPDIR/area1 $TEST_JSN_SIZE
  43
  44         erase_checksum $TMPDIR/area0
  45         chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
  46         write_checksum $chks0 $TMPDIR/area0
  47
  48         erase_checksum $TMPDIR/area1
  49         chks0=$(calc_sha256_checksum_file $TMPDIR/area1)
  50         write_checksum $chks0 $TMPDIR/area1
  51
  52         write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG $TEST_MDA_SIZE
  53         write_luks2_hdr1 $TMPDIR/area1 $TGT_IMG $TEST_MDA_SIZE
  54 }
  55
  56 function check()
  57 {
  58         read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr_res0
  59         local str_res1=$(head -c 4 $TMPDIR/hdr_res0)
  60         test "$str_res1" = "LUKS" || exit 2
  61
  62         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1 $TEST_MDA_SIZE
  63         local str_res1=$(head -c 4 $TMPDIR/hdr_res1)
  64         test "$str_res1" = "SKUL" || exit 2
  65
  66         read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
  67         jq -c --arg js $JS 'if .config.json_size != ( $js | tostring )
  68                then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
  69 }
  70
  71 function cleanup()
  72 {
  73         rm -f $TMPDIR/*
  74         rm -fd $TMPDIR
  75 }
  76
  77 test $# -eq 2 || exit 1
  78
  79 TGT_IMG=$1/$(test_img_name $0)
  80 SRC_IMG=$2
  81
  82 prepare
  83 generate
  84 check
  85 cleanup