From b6b58ad5843754a6e4de30f706119e28e120691c Mon Sep 17 00:00:00 2001
From: zhuyijun <zhuyijun@hatech.com.cn>
Date: Thu, 22 Aug 2024 18:14:44 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9EDM=E7=9A=84TrustedDmFunctionE?=
 =?UTF-8?q?num=E6=9E=9A=E4=B8=BE?=
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---
 .../enums/dm/TrustedDmFunctionEnum.java       | 66 +++++++++++++++++++
 .../impl/dm/AbstractMapperByDm.java           |  3 +-
 ...st.java => TrustedDmFunctionEnumTest.java} |  2 +-
 3 files changed, 69 insertions(+), 2 deletions(-)
 create mode 100644 plugin/datasource/src/main/java/com/alibaba/nacos/plugin/datasource/enums/dm/TrustedDmFunctionEnum.java
 rename plugin/datasource/src/test/java/com/alibaba/nacos/plugin/datasource/enums/mysql/{TrustedMysqlFunctionEnumTest.java => TrustedDmFunctionEnumTest.java} (96%)

diff --git a/plugin/datasource/src/main/java/com/alibaba/nacos/plugin/datasource/enums/dm/TrustedDmFunctionEnum.java b/plugin/datasource/src/main/java/com/alibaba/nacos/plugin/datasource/enums/dm/TrustedDmFunctionEnum.java
new file mode 100644
index 000000000..559a265e5
--- /dev/null
+++ b/plugin/datasource/src/main/java/com/alibaba/nacos/plugin/datasource/enums/dm/TrustedDmFunctionEnum.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed 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 com.alibaba.nacos.plugin.datasource.enums.dm;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * The TrustedSqlFunctionEnum enum class is used to enumerate and manage a list of trusted built-in SQL functions.
+ * By using this enum, you can verify whether a given SQL function is part of the trusted functions list
+ * to avoid potential SQL injection risks.
+ *
+ * @author blake.qiu
+ */
+public enum TrustedDmFunctionEnum {
+
+    /**
+     * NOW().
+     */
+    NOW("NOW()", "NOW(3)");
+
+    private static final Map<String, TrustedDmFunctionEnum> LOOKUP_MAP = new HashMap<>();
+
+    static {
+        for (TrustedDmFunctionEnum entry : TrustedDmFunctionEnum.values()) {
+            LOOKUP_MAP.put(entry.functionName, entry);
+        }
+    }
+
+    private final String functionName;
+
+    private final String function;
+
+    TrustedDmFunctionEnum(String functionName, String function) {
+        this.functionName = functionName;
+        this.function = function;
+    }
+
+    /**
+     * Get the function name.
+     *
+     * @param functionName function name
+     * @return function
+     */
+    public static String getFunctionByName(String functionName) {
+        TrustedDmFunctionEnum entry = LOOKUP_MAP.get(functionName);
+        if (entry != null) {
+            return entry.function;
+        }
+        throw new IllegalArgumentException(String.format("Invalid function name: %s", functionName));
+    }
+}
diff --git a/plugin/datasource/src/main/java/com/alibaba/nacos/plugin/datasource/impl/dm/AbstractMapperByDm.java b/plugin/datasource/src/main/java/com/alibaba/nacos/plugin/datasource/impl/dm/AbstractMapperByDm.java
index 3ebf20794..d16948cca 100644
--- a/plugin/datasource/src/main/java/com/alibaba/nacos/plugin/datasource/impl/dm/AbstractMapperByDm.java
+++ b/plugin/datasource/src/main/java/com/alibaba/nacos/plugin/datasource/impl/dm/AbstractMapperByDm.java
@@ -16,6 +16,7 @@
 
 package com.alibaba.nacos.plugin.datasource.impl.dm;
 
+import com.alibaba.nacos.plugin.datasource.enums.dm.TrustedDmFunctionEnum;
 import com.alibaba.nacos.plugin.datasource.enums.mysql.TrustedMysqlFunctionEnum;
 import com.alibaba.nacos.plugin.datasource.mapper.AbstractMapper;
 
@@ -28,6 +29,6 @@ public abstract class AbstractMapperByDm extends AbstractMapper {
 
     @Override
     public String getFunction(String functionName) {
-        return TrustedMysqlFunctionEnum.getFunctionByName(functionName);
+        return TrustedDmFunctionEnum.getFunctionByName(functionName);
     }
 }
diff --git a/plugin/datasource/src/test/java/com/alibaba/nacos/plugin/datasource/enums/mysql/TrustedMysqlFunctionEnumTest.java b/plugin/datasource/src/test/java/com/alibaba/nacos/plugin/datasource/enums/mysql/TrustedDmFunctionEnumTest.java
similarity index 96%
rename from plugin/datasource/src/test/java/com/alibaba/nacos/plugin/datasource/enums/mysql/TrustedMysqlFunctionEnumTest.java
rename to plugin/datasource/src/test/java/com/alibaba/nacos/plugin/datasource/enums/mysql/TrustedDmFunctionEnumTest.java
index 7cb9dbcea..0358ec02a 100644
--- a/plugin/datasource/src/test/java/com/alibaba/nacos/plugin/datasource/enums/mysql/TrustedMysqlFunctionEnumTest.java
+++ b/plugin/datasource/src/test/java/com/alibaba/nacos/plugin/datasource/enums/mysql/TrustedDmFunctionEnumTest.java
@@ -24,7 +24,7 @@ import org.junit.jupiter.api.Test;
  *
  * @author blake.qiu
  */
-public class TrustedMysqlFunctionEnumTest {
+public class TrustedDmFunctionEnumTest {
 
     @Test
     void testGetFunctionByName() {