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-rwxr-xr-xtests/generators/generate-luks2-metadata-size-4m.img.sh94
1 files changed, 94 insertions, 0 deletions
diff --git a/tests/generators/generate-luks2-metadata-size-4m.img.sh b/tests/generators/generate-luks2-metadata-size-4m.img.sh
new file mode 100755
index 0000000..21715fb
--- /dev/null
+++ b/tests/generators/generate-luks2-metadata-size-4m.img.sh
@@ -0,0 +1,94 @@
+#!/bin/bash
+
+. lib.sh
+
+#
+# *** Description ***
+#
+# generate primary with predefined json_size. There's only limited
+# set of values allowed as json size in config section of LUKS2
+# metadata
+#
+# secondary header is corrupted on purpose as well
+#
+
+# $1 full target dir
+# $2 full source luks2 image
+
+function prepare()
+{
+ cp $SRC_IMG $TGT_IMG
+ test -d $TMPDIR || mkdir $TMPDIR
+ read_luks2_json0 $TGT_IMG $TMPDIR/json0
+ read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
+ read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
+}
+
+function generate()
+{
+ # 4 MiB metadata
+ TEST_MDA_SIZE=$LUKS2_HDR_SIZE_4M
+
+ TEST_MDA_SIZE_BYTES=$((TEST_MDA_SIZE*512))
+ TEST_JSN_SIZE=$((TEST_MDA_SIZE-LUKS2_BIN_HDR_SIZE))
+ KEYSLOTS_OFFSET=$((TEST_MDA_SIZE*1024))
+ JSON_DIFF=$(((TEST_MDA_SIZE-LUKS2_HDR_SIZE)*1024))
+ JSON_SIZE=$((TEST_JSN_SIZE*512))
+ DATA_OFFSET=16777216
+
+ json_str=$(jq -c --arg jdiff $JSON_DIFF --arg jsize $JSON_SIZE --arg off $DATA_OFFSET \
+ '.keyslots[].area.offset |= ( . | tonumber + ($jdiff | tonumber) | tostring) |
+ .config.json_size = $jsize |
+ .segments."0".offset = $off' $TMPDIR/json0)
+ test -n "$json_str" || exit 2
+ test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
+
+ write_luks2_json "$json_str" $TMPDIR/json0 $TEST_JSN_SIZE
+
+ write_bin_hdr_size $TMPDIR/hdr0 $TEST_MDA_SIZE_BYTES
+ write_bin_hdr_size $TMPDIR/hdr1 $TEST_MDA_SIZE_BYTES
+
+ merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0 $TEST_JSN_SIZE
+ merge_bin_hdr_with_json $TMPDIR/hdr1 $TMPDIR/json0 $TMPDIR/area1 $TEST_JSN_SIZE
+
+ erase_checksum $TMPDIR/area0
+ chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
+ write_checksum $chks0 $TMPDIR/area0
+
+ erase_checksum $TMPDIR/area1
+ chks0=$(calc_sha256_checksum_file $TMPDIR/area1)
+ write_checksum $chks0 $TMPDIR/area1
+
+ kill_bin_hdr $TMPDIR/area1
+
+ write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG $TEST_MDA_SIZE
+ write_luks2_hdr1 $TMPDIR/area1 $TGT_IMG $TEST_MDA_SIZE
+}
+
+function check()
+{
+ read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1 $TEST_MDA_SIZE
+ local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
+ test "$str_res1" = "VACUUM" || exit 2
+ read_luks2_json0 $TGT_IMG $TMPDIR/json_res0 $TEST_JSN_SIZE
+ jq -c --arg koff $KEYSLOTS_OFFSET --arg jsize $JSON_SIZE \
+ 'if ([.keyslots[].area.offset] | map(tonumber) | min | tostring != $koff) or
+ (.config.json_size != $jsize)
+ then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
+}
+
+function cleanup()
+{
+ rm -f $TMPDIR/*
+ rm -fd $TMPDIR
+}
+
+test $# -eq 2 || exit 1
+
+TGT_IMG=$1/$(test_img_name $0)
+SRC_IMG=$2
+
+prepare
+generate
+check
+cleanup