mirror of
https://gitlab.com/cryptsetup/cryptsetup.git
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57 lines
1.4 KiB
Bash
Executable File
57 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 primary header with json area containing illegal bytes
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# beyond well-formed json format.
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#
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# secondary header is corrupted on purpose as well
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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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QUOTE="[Homer J. Simpson]: Keep looking shocked and move slowly towards the cake."
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SPACE=20
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function generate()
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{
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read -r json_str < $TMPDIR/json0
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json_len_orig=${#json_str}
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json_len=$((json_len_orig+${#QUOTE}+SPACE))
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test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
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printf '%s' "$QUOTE" | _dd of=$TMPDIR/json0 seek=$((json_len_orig+SPACE)) bs=1 conv=notrunc
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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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kill_bin_hdr $TMPDIR/hdr1
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write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
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}
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function check()
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{
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read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
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local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
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test "$str_res1" = "VACUUM" || exit 2
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read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
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chks_res0=$(read_sha256_checksum $TGT_IMG)
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test "$chks0" = "$chks_res0" || exit 2
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_dd if=$TMPDIR/json_res0 of=$TMPDIR/quote skip=$((json_len_orig+SPACE)) count=${#QUOTE} bs=1
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json_str_res0=$(head -c ${#QUOTE} $TMPDIR/quote)
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test "$json_str_res0" = "$QUOTE" || exit 2
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}
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lib_prepare $@
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generate
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check
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lib_cleanup
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