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Member "cryptsetup-2.4.3/tests/generators/generate-luks2-uint64-overflow-segment-size.img.sh" (24 Jul 2021, 1438 Bytes) of package /linux/misc/cryptsetup-2.4.3.tar.xz:

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    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