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