tests/generators/generate-luks2-corrupted-hdr0-with-correct-chks.img.sh

   1 #!/bin/bash
   2
   3 . lib.sh
   4
   5 #
   6 # *** Description ***
   7 #
   8 # generate header with malformed json but correct checksum in primary header
   9 #
  10
  11 # $1 full target dir
  12 # $2 full source luks2 image
  13
  14 function generate()
  15 {
  16         read -r json_str < $TMPDIR/json0
  17         json_len=${#json_str}
  18         json_len=$((json_len-1)) # to replace json closing '}'
  19         json_new_str="${json_str:0:json_len},\""
  20
  21         while [ ${#json_new_str} -le $((LUKS2_JSON_SIZE*512)) ]; do
  22                 json_new_str=$json_new_str"all_work_and_no_play_makes_Jack_a_dull_boy_"
  23         done
  24
  25         printf "%s" $json_new_str | _dd of=$TMPDIR/json0 bs=512 count=$LUKS2_JSON_SIZE
  26
  27         lib_mangle_json_hdr0
  28 }
  29
  30 function check()
  31 {
  32         lib_hdr0_checksum || exit 2
  33
  34         read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
  35         read -r json_str_res0 < $TMPDIR/json_res0
  36         test ${#json_str_res0} -eq $((LUKS2_JSON_SIZE*512)) || exit 2
  37 }
  38
  39 lib_prepare $@
  40 generate
  41 check
  42 lib_cleanup