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Member "cryptsetup-2.4.3/tests/generators/generate-luks2-corrupted-hdr1-with-correct-chks.img.sh" (24 Jul 2021, 1442 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 malformed json but correct checksum in secondary header
    9 #
   10 
   11 # $1 full target dir
   12 # $2 full source luks2 image
   13 
   14 function prepare()
   15 {
   16     cp $SRC_IMG $TGT_IMG
   17     test -d $TMPDIR || mkdir $TMPDIR
   18     read_luks2_json1 $TGT_IMG $TMPDIR/json1
   19     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
   20 }
   21 
   22 function generate()
   23 {
   24     read -r json_str < $TMPDIR/json1
   25     json_len=${#json_str}
   26     json_len=$((json_len-1)) # to replace json closing '}'
   27     json_new_str="${json_str:0:json_len},\""
   28 
   29     while [ ${#json_new_str} -le $((LUKS2_JSON_SIZE*512)) ]; do
   30         json_new_str=$json_new_str"all_work_and_no_play_makes_Jack_a_dull_boy_"
   31     done
   32 
   33     printf "%s" $json_new_str | _dd of=$TMPDIR/json1 bs=512 count=$LUKS2_JSON_SIZE
   34 
   35     merge_bin_hdr_with_json $TMPDIR/hdr1 $TMPDIR/json1 $TMPDIR/area1
   36     erase_checksum $TMPDIR/area1
   37     chks1=$(calc_sha256_checksum_file $TMPDIR/area1)
   38     write_checksum $chks1 $TMPDIR/area1
   39     write_luks2_hdr1 $TMPDIR/area1 $TGT_IMG
   40 }
   41 
   42 function check()
   43 {
   44     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
   45     chks_res1=$(read_sha256_checksum $TMPDIR/hdr_res1)
   46     test "$chks1" = "$chks_res1" || exit 2
   47     read_luks2_json1 $TGT_IMG $TMPDIR/json_res1
   48     read -r json_str_res1 < $TMPDIR/json_res1
   49     test ${#json_str_res1} -eq $((LUKS2_JSON_SIZE*512)) || exit 2
   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