mirror of
https://gitlab.com/cryptsetup/cryptsetup.git
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66 lines
1.4 KiB
Bash
Executable File
66 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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. lib.sh
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#
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# *** Description ***
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#
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# generate header with malformed json but correct checksum in primary header
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#
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# $1 full target dir
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# $2 full source luks2 image
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function prepare()
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{
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cp $SRC_IMG $TGT_IMG
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test -d $TMPDIR || mkdir $TMPDIR
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read_luks2_json0 $TGT_IMG $TMPDIR/json0
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read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
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}
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function generate()
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{
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read -r json_str < $TMPDIR/json0
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json_len=${#json_str}
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json_len=$((json_len-1)) # to replace json closing '}'
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json_new_str="${json_str:0:json_len},\""
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while [ ${#json_new_str} -le $((LUKS2_JSON_SIZE*512)) ]; do
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json_new_str=$json_new_str"all_work_and_no_play_makes_Jack_a_dull_boy_"
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done
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printf "%s" $json_new_str | _dd of=$TMPDIR/json0 bs=512 count=$LUKS2_JSON_SIZE
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merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
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erase_checksum $TMPDIR/area0
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chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
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write_checksum $chks0 $TMPDIR/area0
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write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
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}
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function check()
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{
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chks_res0=$(read_sha256_checksum $TGT_IMG)
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test "$chks0" = "$chks_res0" || exit 2
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read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
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read -r json_str_res0 < $TMPDIR/json_res0
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test ${#json_str_res0} -eq $((LUKS2_JSON_SIZE*512)) || exit 2
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}
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function cleanup()
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{
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rm -f $TMPDIR/*
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rm -fd $TMPDIR
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}
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test $# -eq 2 || exit 1
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TGT_IMG=$1/$(test_img_name $0)
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SRC_IMG=$2
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prepare
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generate
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check
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cleanup
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