Merge pull request alibaba#753 from yakolee/master

bugfix for alibaba#728

src/main/java/com/alibaba/druid/wall/spi/WallVisitorUtils.java

@@ -1028,6 +1028,10 @@ public static Object getValue(WallVisitor visitor, SQLBinaryOpExpr x) {
             }
             return null;
         }
+
+        boolean checkCondition = visitor != null
+                                 && (!visitor.getConfig().isConstArithmeticAllow()
+                                     || !visitor.getConfig().isConditionOpBitwseAllow() || !visitor.getConfig().isConditionOpXorAllow());
 
         if (x.getLeft() instanceof SQLName) {
             if (x.getRight() instanceof SQLName) {
@@ -1048,7 +1052,7 @@ public static Object getValue(WallVisitor visitor, SQLBinaryOpExpr x) {
                             break;
                     }
                 }
-            } else {
+            } else if (!checkCondition) {
                 switch (x.getOperator()) {
                     case Equality:
                     case NotEqual:
@@ -1078,15 +1082,14 @@ public static Object getValue(WallVisitor visitor, SQLBinaryOpExpr x) {
             }
         }
 
-        if (x.getOperator() == SQLBinaryOperator.Like || x.getOperator() == SQLBinaryOperator.NotLike) {
-            Object leftResult = getValue(visitor, x.getLeft());
-            Object rightResult = getValue(visitor, x.getRight());
+        Object leftResult = getValue(visitor, x.getLeft());
+        Object rightResult = getValue(visitor, x.getRight());
 
-            if (x.getOperator() == SQLBinaryOperator.Like && leftResult instanceof String
-                && leftResult.equals(rightResult)) {
-                addViolation(visitor, ErrorCode.SAME_CONST_LIKE, "same const like", x);
-            }
+        if (x.getOperator() == SQLBinaryOperator.Like && leftResult instanceof String && leftResult.equals(rightResult)) {
+            addViolation(visitor, ErrorCode.SAME_CONST_LIKE, "same const like", x);
+        }
 
+        if (x.getOperator() == SQLBinaryOperator.Like || x.getOperator() == SQLBinaryOperator.NotLike) {
             WallContext context = WallContext.current();
             if (context != null) {
                 if (rightResult instanceof Number || leftResult instanceof Number) {

src/test/java/com/alibaba/druid/bvt/bug/Issue_728.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 1999-2011 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.druid.bvt.bug;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.wall.WallConfig;
+import com.alibaba.druid.wall.WallUtils;
+
+public class Issue_728 extends TestCase {
+
+    public void test1() throws Exception {
+        String sql = "select * from city_list where city_id = 3-1";
+
+        WallConfig config = new WallConfig();
+        config.setConstArithmeticAllow(false);
+
+        Assert.assertFalse(WallUtils.isValidateMySql(sql, config));
+    }
+
+    public void test2() throws Exception {
+        String sql = "SELECT * from city_list where 2 = case when 2=1 then 1 else 2 END";
+
+        WallConfig config = new WallConfig();
+        config.setCaseConditionConstAllow(false);
+
+        Assert.assertFalse(WallUtils.isValidateMySql(sql, config));
+    }
+
+    public void test3() throws Exception {
+        String sql = "SELECT * from city_list where city_id = 1 & 2";
+
+        WallConfig config = new WallConfig();
+        config.setConditionOpBitwseAllow(false);
+
+        Assert.assertFalse(WallUtils.isValidateMySql(sql, config));
+    }
+}