64 lines
1.8 KiB
Bash
Executable file
64 lines
1.8 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 secondary header with one of allowed json area
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# size values. Test whether auto-recovery code is able
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# to validate secondary header with non-default json area
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# size.
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#
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# primary header is corrupted on purpose.
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#
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# $1 full target dir
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# $2 full source luks2 image
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function generate()
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{
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# 512 KiB metadata
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TEST_MDA_SIZE=$LUKS2_HDR_SIZE_512K
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TEST_MDA_SIZE_BYTES=$((TEST_MDA_SIZE*512))
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TEST_JSN_SIZE=$((TEST_MDA_SIZE-LUKS2_BIN_HDR_SIZE))
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KEYSLOTS_OFFSET=$((TEST_MDA_SIZE*1024))
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JSON_DIFF=$(((TEST_MDA_SIZE-LUKS2_HDR_SIZE)*1024))
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JSON_SIZE=$((TEST_JSN_SIZE*512))
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DATA_OFFSET=16777216
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json_str=$(jq -c --arg jdiff $JSON_DIFF --arg jsize $JSON_SIZE --arg off $DATA_OFFSET \
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'.keyslots[].area.offset |= ( . | tonumber + ($jdiff | tonumber) | tostring) |
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.config.json_size = $jsize |
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.segments."0".offset = $off' $TMPDIR/json0)
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test -n "$json_str" || exit 2
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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 $TEST_JSN_SIZE
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write_luks2_json "$json_str" $TMPDIR/json1 $TEST_JSN_SIZE
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write_bin_hdr_size $TMPDIR/hdr0 $TEST_MDA_SIZE_BYTES
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write_bin_hdr_size $TMPDIR/hdr1 $TEST_MDA_SIZE_BYTES
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write_bin_hdr_offset $TMPDIR/hdr1 $TEST_MDA_SIZE_BYTES
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lib_mangle_json_hdr0 $TEST_MDA_SIZE $TEST_JSN_SIZE kill
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lib_mangle_json_hdr1 $TEST_MDA_SIZE $TEST_JSN_SIZE
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}
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function check()
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{
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lib_hdr0_killed $TEST_MDA_SIZE || exit 2
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read_luks2_json1 $TGT_IMG $TMPDIR/json_res1 $TEST_JSN_SIZE
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jq -c --arg koff $KEYSLOTS_OFFSET --arg jsize $JSON_SIZE \
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'if ([.keyslots[].area.offset] | map(tonumber) | min | tostring != $koff) or
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(.config.json_size != $jsize)
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then error("Unexpected value in result json") else empty end' $TMPDIR/json_res1 || 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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