"Fossies" - the Fresh Open Source Software Archive

Member "cryptsetup-2.4.3/tests/generators/generate-luks2-missing-segment-referenced-in-digest.img.sh" (24 Jul 2021, 1809 Bytes) of package /linux/misc/cryptsetup-2.4.3.tar.xz:

As a special service "Fossies" has tried to format the requested source page into HTML format using (guessed) Bash source code syntax highlighting (style: standard) with prefixed line numbers and code folding option. Alternatively you can here view or download the uninterpreted source code file. 
    1 #!/bin/bash
    2 
    3 . lib.sh
    4 
    5 #
    6 # *** Description ***
    7 #
    8 # generate primary header with missing segment object referenced
    9 # in digest 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 < $TMPDIR/json0
   29     arr_len=$(jq -c -M '.digests."0".segments | length' $TMPDIR/json0)
   30     # add missing keyslot reference in keyslots array of digest '0'
   31     json_str=$(jq -c 'def arr: ["digests", "0", "segments"];
   32            def missseg: getpath(["segments"]) | keys | max | tonumber + 1 | tostring;
   33            setpath(arr; getpath(arr) + [ missseg ])' $TMPDIR/json0)
   34     test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
   35 
   36     write_luks2_json "$json_str" $TMPDIR/json0
   37 
   38     merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
   39     erase_checksum $TMPDIR/area0
   40     chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
   41     write_checksum $chks0 $TMPDIR/area0
   42     write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
   43     kill_bin_hdr $TMPDIR/hdr1
   44     write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
   45 }
   46 
   47 function check()
   48 {
   49     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
   50     local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
   51     test "$str_res1" = "VACUUM" || exit 2
   52 
   53     read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
   54     chks_res0=$(read_sha256_checksum $TGT_IMG)
   55     test "$chks0" = "$chks_res0" || exit 2
   56     new_arr_len=$(jq -c -M '.digests."0".segments | length' $TMPDIR/json_res0)
   57     test $((arr_len+1)) -eq $new_arr_len || exit 2
   58 }
   59 
   60 function cleanup()
   61 {
   62     rm -f $TMPDIR/*
   63     rm -fd $TMPDIR
   64 }
   65 
   66 test $# -eq 2 || exit 1
   67 
   68 TGT_IMG=$1/$(test_img_name $0)
   69 SRC_IMG=$2
   70 
   71 prepare
   72 generate
   73 check
   74 cleanup