Add libLUKS2 tests.

tests/generators/generate-luks2-missing-trailing-null-byte-json0.img.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+
+. lib.sh
+
+#
+# *** Description ***
+#
+# generate primary header with well-formed json but missing
+# trailing null byte.
+#
+# secondary header is corrupted on purpose as well
+#
+
+# $1 full target dir
+# $2 full source luks2 image
+
+PATTERN="\"config\":{"
+KEY="\"config_key\":\""
+
+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()
+{
+	read -r json_str < $TMPDIR/json0
+	json_len=${#json_str}
+	pindex=$(strindex $json_str $PATTERN)
+	test $pindex -gt 0 || exit 2
+
+	offset=${#PATTERN}
+	offset=$((offset+pindex))
+	key_len=${#KEY}
+	remain=$((LUKS2_JSON_SIZE*512-key_len-json_len-1)) # -1: closing '"'
+	if [ ${json_str:offset:1} = "}" ]; then
+		format_str="%s%s%s"
+	else
+		format_str="%s%s,%s"
+		remain=$((remain-1)) # also count with separating ','
+	fi
+	test $remain -gt 0 || exit 2
+
+	fill=$(repeat_str "X" $remain)
+	fill=$(repeat_str "X" $remain)"\""
+
+	printf $format_str $KEY $fill ${json_str:$offset} | _dd of=$TMPDIR/json0 bs=1 seek=$offset conv=notrunc
+
+	merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
+	erase_checksum $TMPDIR/area0
+	chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
+	write_checksum $chks0 $TMPDIR/area0
+	write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
+	kill_bin_hdr $TMPDIR/hdr1
+	write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
+}
+
+function check()
+{
+	read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
+	local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
+	test "$str_res1" = "VACUUM" || exit 2
+
+	read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
+	chks_res0=$(read_sha256_checksum $TGT_IMG)
+	test "$chks0" = "$chks_res0" || exit 2
+	read -r json_str_res0 < $TMPDIR/json_res0
+	test ${#json_str_res0} -eq $((LUKS2_JSON_SIZE*512)) || exit 2
+}
+
+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