From d8255edf84d4bb935178f5c739ea588b1721f02a Mon Sep 17 00:00:00 2001
From: RuoYi <yzz_ivy@163.com>
Date: Wed, 01 Nov 2023 16:02:53 +0800
Subject: [PATCH] 新增编程式判断资源访问权限
---
ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java | 33 +++++++++++++++++++++++++++++++++
1 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java
index ceff841..9f40118 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java
@@ -11,9 +11,19 @@
public class SqlUtil
{
/**
+ * 定义常用的 sql关键字
+ */
+ public static String SQL_REGEX = "and |extractvalue|updatexml|exec |insert |select |delete |update |drop |count |chr |mid |master |truncate |char |declare |or |+|user()";
+
+ /**
* 仅支持字母、数字、下划线、空格、逗号、小数点（支持多个字段排序）
*/
public static String SQL_PATTERN = "[a-zA-Z0-9_\\ \\,\\.]+";
+
+ /**
+ * 限制orderBy最大长度
+ */
+ private static final int ORDER_BY_MAX_LENGTH = 500;
/**
* 检查字符，防止注入绕过
@@ -24,6 +34,10 @@
{
throw new UtilException("参数不符合规范，不能进行查询");
}
+ if (StringUtils.length(value) > ORDER_BY_MAX_LENGTH)
+ {
+ throw new UtilException("参数已超过最大限制，不能进行查询");
+ }
return value;
}
@@ -34,4 +48,23 @@
{
return value.matches(SQL_PATTERN);
}
+
+ /**
+ * SQL关键字检查
+ */
+ public static void filterKeyword(String value)
+ {
+ if (StringUtils.isEmpty(value))
+ {
+ return;
+ }
+ String[] sqlKeywords = StringUtils.split(SQL_REGEX, "\\|");
+ for (String sqlKeyword : sqlKeywords)
+ {
+ if (StringUtils.indexOfIgnoreCase(value, sqlKeyword) > -1)
+ {
+ throw new UtilException("参数存在SQL注入风险");
+ }
+ }
+ }
}
--
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