43 lines
1.1 KiB
Bash
Executable file
43 lines
1.1 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 too large keyslots_size set in config section
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# (iow config.keyslots_size = data_offset - keyslots_offset + 512)
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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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# $2 full source luks2 image
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function generate()
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{
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# make area 7 being included in area 6
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OFFS=$((2*LUKS2_HDR_SIZE*512))
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json_str=$(jq -c --arg off $OFFS '.config.keyslots_size = (.segments."0".offset | tonumber - ($off | tonumber) + 4096 | tostring)' $TMPDIR/json0)
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test -n "$json_str" || exit 2
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# [.keyslots[].area.offset | tonumber] | max | tostring ---> max offset in keyslot areas
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test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
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write_luks2_json "$json_str" $TMPDIR/json0
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lib_mangle_json_hdr0_kill_hdr1
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}
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function check()
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{
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lib_hdr1_killed || exit 2
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read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
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jq -c --arg off $OFFS 'if .config.keyslots_size != ( .segments."0".offset | tonumber - ($off | tonumber) + 4096 | tostring )
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then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
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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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