| New file |
| | |
| | | package org.springblade.core.mp.support; |
| | | |
| | | /** |
| | | * BladeX Commercial License Agreement |
| | | * Copyright (c) 2018-2099, https://bladex.cn. All rights reserved. |
| | | * <p> |
| | | * Use of this software is governed by the Commercial License Agreement |
| | | * obtained after purchasing a license from BladeX. |
| | | * <p> |
| | | * 1. This software is for development use only under a valid license |
| | | * from BladeX. |
| | | * <p> |
| | | * 2. Redistribution of this software's source code to any third party |
| | | * without a commercial license is strictly prohibited. |
| | | * <p> |
| | | * 3. Licensees may copyright their own code but cannot use segments |
| | | * from this software for such purposes. Copyright of this software |
| | | * remains with BladeX. |
| | | * <p> |
| | | * Using this software signifies agreement to this License, and the software |
| | | * must not be used for illegal purposes. |
| | | * <p> |
| | | * THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is |
| | | * not liable for any claims arising from secondary or illegal development. |
| | | * <p> |
| | | * Author: Chill Zhuang (bladejava@qq.com) |
| | | */ |
| | | |
| | | import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; |
| | | import lombok.SneakyThrows; |
| | | import org.springblade.core.tool.utils.DateUtil; |
| | | import org.springblade.core.tool.utils.Func; |
| | | import org.springblade.core.tool.utils.StringPool; |
| | | import org.springblade.core.tool.utils.StringUtil; |
| | | |
| | | import java.sql.SQLException; |
| | | import java.util.Map; |
| | | import java.util.regex.Pattern; |
| | | |
| | | /** |
| | | * 定义常用的 sql关键字 |
| | | * |
| | | * @author Chill |
| | | */ |
| | | public class SqlKeyword { |
| | | /** |
| | | * 常规sql字符匹配关键词 |
| | | */ |
| | | private final static String SQL_REGEX = "(?i)(?<![a-z])('|%|--|insert|delete|select|sleep|count|update|updatexml|group|union|drop|truncate|alter|grant|execute|exec|xp_cmdshell|call|declare|sql)(?![a-z])"; |
| | | /** |
| | | * 二次匹配防止双写等注入手段 |
| | | */ |
| | | private final static Pattern PATTERN = Pattern.compile("(?:--|[\"';%]|\\binsert\\b|\\bdelete\\b|\\bselect\\b|\\bcount\\b|\\bupdate\\b|\\bupdatexml\\b|\\bsleep\\b|group\\s+by|\\bunion\\b|\\bdrop\\b|\\btruncate\\b|\\balter\\b|\\bgrant\\b|\\bexecute\\b|\\bxp_cmdshell\\b|\\bcall\\b|\\bdeclare\\b|\\bsql\\b)"); |
| | | /** |
| | | * sql注入警告语 |
| | | */ |
| | | private final static String SQL_INJECTION_MESSAGE = "SQL keyword injection prevention processing!"; |
| | | /** |
| | | * sql关键字为空 |
| | | */ |
| | | private final static String SQL_EMPTY_MESSAGE = "SQL keyword is empty!"; |
| | | /** |
| | | * 等于 |
| | | */ |
| | | private static final String EQUAL = "_equal"; |
| | | /** |
| | | * 不等于 |
| | | */ |
| | | private static final String NOT_EQUAL = "_notequal"; |
| | | /** |
| | | * 模糊 |
| | | */ |
| | | private static final String LIKE = "_like"; |
| | | /** |
| | | * 左模糊 |
| | | */ |
| | | private static final String LIKE_LEFT = "_likeleft"; |
| | | /** |
| | | * 右模糊 |
| | | */ |
| | | private static final String LIKE_RIGHT = "_likeright"; |
| | | /** |
| | | * 不包含 |
| | | */ |
| | | private static final String NOT_LIKE = "_notlike"; |
| | | /** |
| | | * 大于等于 |
| | | */ |
| | | private static final String GE = "_ge"; |
| | | /** |
| | | * 小于等于 |
| | | */ |
| | | private static final String LE = "_le"; |
| | | /** |
| | | * 大于 |
| | | */ |
| | | private static final String GT = "_gt"; |
| | | /** |
| | | * 小于 |
| | | */ |
| | | private static final String LT = "_lt"; |
| | | /** |
| | | * 日期大于等于 |
| | | */ |
| | | private static final String DATE_GE = "_datege"; |
| | | /** |
| | | * 日期大于 |
| | | */ |
| | | private static final String DATE_GT = "_dategt"; |
| | | /** |
| | | * 日期等于 |
| | | */ |
| | | private static final String DATE_EQUAL = "_dateequal"; |
| | | /** |
| | | * 日期小于 |
| | | */ |
| | | private static final String DATE_LT = "_datelt"; |
| | | /** |
| | | * 日期小于等于 |
| | | */ |
| | | private static final String DATE_LE = "_datele"; |
| | | /** |
| | | * 为空 |
| | | */ |
| | | private static final String IS_NULL = "_null"; |
| | | /** |
| | | * 不为空 |
| | | */ |
| | | private static final String NOT_NULL = "_notnull"; |
| | | /** |
| | | * 忽略 |
| | | */ |
| | | private static final String IGNORE = "_ignore"; |
| | | |
| | | /** |
| | | * 条件构造器 |
| | | * |
| | | * @param query 查询字段 |
| | | * @param qw 查询包装类 |
| | | */ |
| | | public static void buildCondition(Map<String, Object> query, QueryWrapper<?> qw) { |
| | | if (Func.isEmpty(query)) { |
| | | return; |
| | | } |
| | | query.forEach((k, v) -> { |
| | | if (Func.hasEmpty(k, v) || k.endsWith(IGNORE)) { |
| | | return; |
| | | } |
| | | // 过滤sql注入关键词 |
| | | k = filter(k); |
| | | if (k.endsWith(EQUAL)) { |
| | | qw.eq(getColumn(k, EQUAL), v); |
| | | } else if (k.endsWith(NOT_EQUAL)) { |
| | | qw.ne(getColumn(k, NOT_EQUAL), v); |
| | | } else if (k.endsWith(LIKE_LEFT)) { |
| | | qw.likeLeft(getColumn(k, LIKE_LEFT), v); |
| | | } else if (k.endsWith(LIKE_RIGHT)) { |
| | | qw.likeRight(getColumn(k, LIKE_RIGHT), v); |
| | | } else if (k.endsWith(NOT_LIKE)) { |
| | | qw.notLike(getColumn(k, NOT_LIKE), v); |
| | | } else if (k.endsWith(GE)) { |
| | | qw.ge(getColumn(k, GE), v); |
| | | } else if (k.endsWith(LE)) { |
| | | qw.le(getColumn(k, LE), v); |
| | | } else if (k.endsWith(GT)) { |
| | | qw.gt(getColumn(k, GT), v); |
| | | } else if (k.endsWith(LT)) { |
| | | qw.lt(getColumn(k, LT), v); |
| | | } else if (k.endsWith(DATE_GE)) { |
| | | qw.ge(getColumn(k, DATE_GE), DateUtil.parse(String.valueOf(v), DateUtil.PATTERN_DATETIME)); |
| | | } else if (k.endsWith(DATE_GT)) { |
| | | qw.gt(getColumn(k, DATE_GT), DateUtil.parse(String.valueOf(v), DateUtil.PATTERN_DATETIME)); |
| | | } else if (k.endsWith(DATE_EQUAL)) { |
| | | qw.eq(getColumn(k, DATE_EQUAL), DateUtil.parse(String.valueOf(v), DateUtil.PATTERN_DATETIME)); |
| | | } else if (k.endsWith(DATE_LE)) { |
| | | qw.le(getColumn(k, DATE_LE), DateUtil.parse(String.valueOf(v), DateUtil.PATTERN_DATETIME)); |
| | | } else if (k.endsWith(DATE_LT)) { |
| | | qw.lt(getColumn(k, DATE_LT), DateUtil.parse(String.valueOf(v), DateUtil.PATTERN_DATETIME)); |
| | | } else if (k.endsWith(IS_NULL)) { |
| | | qw.isNull(getColumn(k, IS_NULL)); |
| | | } else if (k.endsWith(NOT_NULL)) { |
| | | qw.isNotNull(getColumn(k, NOT_NULL)); |
| | | } else { |
| | | qw.like(getColumn(k, LIKE), v); |
| | | } |
| | | }); |
| | | } |
| | | |
| | | /** |
| | | * 获取数据库字段 |
| | | * |
| | | * @param column 字段名 |
| | | * @param keyword 关键字 |
| | | * @return string |
| | | */ |
| | | private static String getColumn(String column, String keyword) { |
| | | return StringUtil.humpToUnderline(StringUtil.removeSuffix(column, keyword)); |
| | | } |
| | | |
| | | /** |
| | | * 把SQL关键字替换为空字符串 |
| | | * |
| | | * @param param 关键字 |
| | | * @return string |
| | | */ |
| | | @SneakyThrows(SQLException.class) |
| | | public static String filter(String param) { |
| | | // 清除特殊字符 |
| | | String cleaned = StringUtil.cleanIdentifier(param); |
| | | if (cleaned == null) { |
| | | throw new SQLException(SQL_EMPTY_MESSAGE); |
| | | } |
| | | // 将校验到的sql关键词替换为空字符串 |
| | | String sql = cleaned.replaceAll(SQL_REGEX, StringPool.EMPTY); |
| | | // 二次校验,避免双写绕过等情况出现 |
| | | if (match(sql)) { |
| | | throw new SQLException(SQL_INJECTION_MESSAGE); |
| | | } |
| | | return sql; |
| | | } |
| | | |
| | | /** |
| | | * 判断字符是否包含SQL关键字 |
| | | * |
| | | * @param param 关键字 |
| | | * @return boolean |
| | | */ |
| | | public static Boolean match(String param) { |
| | | return Func.isNotEmpty(param) && PATTERN.matcher(param).find(); |
| | | } |
| | | |
| | | } |