improve sql wall

src/test/java/com/alibaba/druid/bvt/filter/wall/MySqlWallTest140.java

@@ -0,0 +1,35 @@
+/*
+ * 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.filter.wall;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.wall.WallProvider;
+import com.alibaba.druid.wall.spi.MySqlWallProvider;
+
+public class MySqlWallTest140 extends TestCase {
+
+    public void test_false() throws Exception {
+        WallProvider provider = new MySqlWallProvider();
+
+        String sql = "SELECT name, '******' password, createTime from user " //
+                     + "where name like 'admin%' "//
+                     + "    AND 8600=CONVERT(INT,(SELECT CHAR(113)+CHAR(118)+CHAR(100)+CHAR(114)+CHAR(113)+(SELECT (CASE WHEN (8600=8600) THEN CHAR(49) ELSE CHAR(48) END))+CHAR(113)+CHAR(118)+CHAR(98)+CHAR(97)+CHAR(113))) AND '%'=''";
+        Assert.assertFalse(provider.checkValid(sql));
+    }
+}

src/test/java/com/alibaba/druid/bvt/filter/wall/MySqlWallTest141.java

@@ -0,0 +1,33 @@
+/*
+ * 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.filter.wall;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.wall.WallProvider;
+import com.alibaba.druid.wall.spi.MySqlWallProvider;
+
+public class MySqlWallTest141 extends TestCase {
+
+    public void test_false() throws Exception {
+        WallProvider provider = new MySqlWallProvider();
+
+        String sql = "SELECT name, '******' password, createTime from user where length(name) = 999999.9 or ascii(substring((database()),1,1))=127";
+        Assert.assertFalse(provider.checkValid(sql));
+    }
+}