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Member "cryptsetup-2.4.3/tests/generators/generate-luks2-invalid-keyslots-size-c0.img.sh" (24 Jul 2021, 1847 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 too large keyslots_size set in config section
    9 # (iow config.keyslots_size = data_offset - keyslots_offset + 512)
   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 $TMPDIR/hdr1
   24 }
   25 
   26 function generate()
   27 {
   28     # make area 7 being included in area 6
   29     OFFS=$((2*LUKS2_HDR_SIZE*512))
   30     json_str=$(jq -c --arg off $OFFS '.config.keyslots_size = (.segments."0".offset | tonumber - ($off | tonumber) + 4096 | tostring)' $TMPDIR/json0)
   31     test -n "$json_str" || exit 2
   32     # [.keyslots[].area.offset | tonumber] | max | tostring ---> max offset in keyslot areas
   33     test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
   34 
   35     write_luks2_json "$json_str" $TMPDIR/json0
   36 
   37     merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
   38     erase_checksum $TMPDIR/area0
   39     chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
   40     write_checksum $chks0 $TMPDIR/area0
   41     write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
   42     kill_bin_hdr $TMPDIR/hdr1
   43     write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
   44 }
   45 
   46 function check()
   47 {
   48     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
   49     local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
   50     test "$str_res1" = "VACUUM" || exit 2
   51 
   52     read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
   53     jq -c --arg off $OFFS 'if .config.keyslots_size != ( .segments."0".offset | tonumber - ($off | tonumber) + 4096 | tostring )
   54            then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
   55 }
   56 
   57 function cleanup()
   58 {
   59     rm -f $TMPDIR/*
   60     rm -fd $TMPDIR
   61 }
   62 
   63 test $# -eq 2 || exit 1
   64 
   65 TGT_IMG=$1/$(test_img_name $0)
   66 SRC_IMG=$2
   67 
   68 prepare
   69 generate
   70 check
   71 cleanup