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Member "cryptsetup-2.4.3/tests/generators/generate-luks2-non-null-byte-beyond-json0.img.sh" (24 Jul 2021, 1575 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 json area concluded with illegal
    9 # byte beyond terminating '}' character.
   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 < $TMPDIR/json0
   29     json_str="$json_str"X # add illegal 'X' beyond json format
   30     test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
   31 
   32     printf '%s' $json_str | _dd of=$TMPDIR/json0 bs=1 conv=notrunc
   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 $TMPDIR/json_res0
   50     chks_res0=$(read_sha256_checksum $TGT_IMG)
   51     test "$chks0" = "$chks_res0" || exit 2
   52     read -r json_str_res0 < $TMPDIR/json_res0
   53     local len=${#json_str_res0}
   54     len=$((len-1))
   55     test ${json_str_res0:len:1} = "X" || exit 2
   56 }
   57 
   58 function cleanup()
   59 {
   60     rm -f $TMPDIR/*
   61     rm -fd $TMPDIR
   62 }
   63 
   64 test $# -eq 2 || exit 1
   65 
   66 TGT_IMG=$1/$(test_img_name $0)
   67 SRC_IMG=$2
   68 
   69 prepare
   70 generate
   71 check
   72 cleanup