content: /*
   * 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.druid.bvt.filter.wall;
  
  import com.alibaba.druid.wall.WallConfig;
  import com.alibaba.druid.wall.WallUtils;
  import junit.framework.TestCase;
  
  /**
   * 这个场景，被攻击者用于测试当前SQL拥有多少字段
   *
   * @author wenshao
   */
  public class WallUnionTest4 extends TestCase {
      public static final String UNION_SQL1 = "SELECT id, product FROM T1 t where id=1 UNION (SELECT * FROM (SELECT 1,'x') X)";
      public static final String UNION_SQL2 = "SELECT id, product FROM T1 t where id=1 UNION (SELECT * FROM (SELECT 1,'x') X) -- ";
  
      public void testMySql() throws Exception {
          final WallConfig config = new WallConfig();
          config.setSelectUnionCheck(true);
          assertFalse(WallUtils.isValidateMySql(UNION_SQL1, config));
          assertFalse(WallUtils.isValidateMySql(UNION_SQL2, config));
  
          config.setSelectUnionCheck(false);
          config.setSelectWhereAlwayTrueCheck(false);
          config.setCommentAllow(true);
          assertTrue(WallUtils.isValidateMySql(UNION_SQL1, config));
          assertTrue(WallUtils.isValidateMySql(UNION_SQL2, config));
      }
  
      public void testORACLE() throws Exception {
          final WallConfig config = new WallConfig();
          config.setSelectUnionCheck(true);
          assertFalse(WallUtils.isValidateOracle(UNION_SQL1, config));
          assertFalse(WallUtils.isValidateOracle(UNION_SQL2, config));
  
          config.setSelectUnionCheck(false);
          config.setSelectWhereAlwayTrueCheck(false);
          config.setCommentAllow(true);
          assertTrue(WallUtils.isValidateOracle(UNION_SQL1, config));
          assertTrue(WallUtils.isValidateOracle(UNION_SQL2, config));
      }
  }
  