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Member "cryptsetup-2.4.3/tests/generators/generate-luks2-correct-full-json0.img.sh" (24 Jul 2021, 1979 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 header with correct json of maximal size in primary slot.
    9 # Secondary header is broken on purpose.
   10 #
   11 
   12 # $1 full target dir
   13 # $2 full source luks2 image
   14 
   15 PATTERN="\"config\":{"
   16 KEY="\"config_key\":\""
   17 
   18 function prepare()
   19 {
   20     cp $SRC_IMG $TGT_IMG
   21     test -d $TMPDIR || mkdir $TMPDIR
   22     read_luks2_json0 $TGT_IMG $TMPDIR/json0
   23     read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
   24     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
   25 }
   26 
   27 function generate()
   28 {
   29     read -r json_str < $TMPDIR/json0
   30     json_len=${#json_str}
   31     pindex=$(strindex $json_str $PATTERN)
   32     test $pindex -gt 0 || exit 2
   33 
   34     offset=${#PATTERN}
   35     offset=$((offset+pindex))
   36     key_len=${#KEY}
   37     remain=$((LUKS2_JSON_SIZE*512-json_len-key_len-2)) # -2: closing '"' and terminating '\0'
   38     if [ ${json_str:offset:1} = "}" ]; then
   39         format_str="%s%s%s"
   40     else
   41         format_str="%s%s,%s"
   42         remain=$((remain-1)) # also count with separating ','
   43     fi
   44     test $remain -gt 0 || exit 2
   45 
   46     fill=$(repeat_str "X" $remain)"\""
   47 
   48     printf $format_str $KEY $fill ${json_str:$offset} | _dd of=$TMPDIR/json0 bs=1 seek=$offset conv=notrunc
   49 
   50     merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
   51     erase_checksum $TMPDIR/area0
   52     chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
   53     write_checksum $chks0 $TMPDIR/area0
   54     write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
   55     kill_bin_hdr $TMPDIR/hdr1
   56     write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
   57 }
   58 
   59 function check()
   60 {
   61     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
   62     local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
   63     test "$str_res1" = "VACUUM" || exit 2
   64 
   65     read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
   66     chks_res0=$(read_sha256_checksum $TGT_IMG)
   67     test "$chks0" = "$chks_res0" || exit 2
   68     #json_str_res0=$(< $TMPDIR/json_res0)
   69     read -r json_str_res0 < $TMPDIR/json_res0
   70     test ${#json_str_res0} -eq $((LUKS2_JSON_SIZE*512-1)) || exit 2
   71 }
   72 
   73 function cleanup()
   74 {
   75     rm -f $TMPDIR/*
   76     rm -fd $TMPDIR
   77 }
   78 
   79 test $# -eq 2 || exit 1
   80 
   81 TGT_IMG=$1/$(test_img_name $0)
   82 SRC_IMG=$2
   83 
   84 prepare
   85 generate
   86 check
   87 cleanup