spiritxishi commented on code in PR #12146:
URL: https://github.com/apache/inlong/pull/12146#discussion_r3449525716


##########
inlong-common/src/main/java/org/apache/inlong/common/util/PathValidationUtils.java:
##########
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.inlong.common.util;
+
+import java.util.Set;
+
+/**
+ * Utility class for validating file path patterns, providing protection
+ * against path traversal attacks and allowed-directory enforcement.
+ */
+public class PathValidationUtils {
+
+    /**
+     * Check whether the given path contains path traversal patterns.
+     * A traversal is detected when ".." appears as a complete path segment.
+     *
+     * @param path the path string to validate, may be null or empty
+     * @return true if the path contains a traversal segment, false otherwise
+     */
+    public static boolean containsPathTraversal(String path) {
+        if (path == null || path.isEmpty()) {
+            return false;
+        }
+        // Normalize backslashes to forward slashes and split into segments
+        String normalized = path.replace('\\', '/');
+        for (String segment : normalized.split("/")) {

Review Comment:
   InlongConstants.java is in module  'manager-common', depends on 
'inlong-common',and this code is in 'inlong-common'. Should I add an var in 
inlong.common.constant.Constatns.java(in 'inlong-common' module) and named 
'SLASH'  and 'SLASH_CHAR'?



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