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yulichang 2023-03-28 18:36:40 +08:00
parent dfa9baea93
commit 1bdb91325a
2 changed files with 62 additions and 2 deletions
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61
mybatis-plus-join-core/src/main/java/com/github/yulichang/toolkit/MPJSqlInjectionUtils.java Normal file
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@ -0,0 +1,61 @@
/*
* Copyright (c) 2011-2022, baomidou (jobob@qq.com).
*
* 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.github.yulichang.toolkit;
import java.util.Objects;
import java.util.regex.Pattern;
/**
* SQL 注入验证工具类
*
* @author hubin
* @since 2021-08-15
*/
@SuppressWarnings("all")
public class MPJSqlInjectionUtils {
/**
* SQL语法检查正则：符合两个关键字（有先后顺序）才算匹配
*/
private static final Pattern SQL_SYNTAX_PATTERN = Pattern.compile("(insert|delete|update|select|create|drop|truncate|grant|alter|deny|revoke|call|execute|exec|declare|show|rename|set)" +
"\\s+.*(into|from|set|where|table|database|view|index|on|cursor|procedure|trigger|for|password|union|and|or)|(select\\s*\\*\\s*from\\s+)", Pattern.CASE_INSENSITIVE);
/**
* 使用'、;或注释截断SQL检查正则
*/
private static final Pattern SQL_COMMENT_PATTERN = Pattern.compile("'.*(or|union|--|#|/*|;)", Pattern.CASE_INSENSITIVE);
/**
* 检查参数是否存在 SQL 注入
*
* @param value 检查参数
* @return true 非法 false 合法
*/
public static boolean check(String value) {
Objects.requireNonNull(value);
// 处理是否包含SQL注释字符 || 检查是否包含SQL注入敏感字符
return SQL_COMMENT_PATTERN.matcher(value).find() || SQL_SYNTAX_PATTERN.matcher(value).find();
}
/**
* 刪除字段转义符单引号双引号
*
* @param text 待处理字段
* @return
*/
public static String removeEscapeCharacter(String text) {
Objects.nonNull(text);
return text.replaceAll("\"", "").replaceAll("'", "");
}
}

3
mybatis-plus-join-core/src/main/java/com/github/yulichang/toolkit/MPJStringUtils.java
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@ -17,7 +17,6 @@ package com.github.yulichang.toolkit;
import com.baomidou.mybatisplus.core.toolkit.ArrayUtils;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.sql.SqlInjectionUtils;
import com.baomidou.mybatisplus.core.toolkit.sql.StringEscape;
import com.baomidou.mybatisplus.core.toolkit.support.BiIntFunction;
@ -595,7 +594,7 @@ public final class MPJStringUtils {
* @param str 字符串
*/
public static String sqlInjectionReplaceBlank(String str) {
if (SqlInjectionUtils.check(str)) {
if (MPJSqlInjectionUtils.check(str)) {
/**
* 过滤sql黑名单字符，存在 SQL 注入，去除空白内容
*/