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48 lines
1003 B
Bash
Executable File
48 lines
1003 B
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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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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lib_mangle_json_hdr0_kill_hdr1
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}
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check()
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{
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lib_hdr1_killed || exit 2
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lib_hdr0_checksum || exit 2
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read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
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_dd if=$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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