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ASP 中的 asp 实现对SQL注入危险字符进行重编码处理的函数
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-13 浏览: 51 ::
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<%
'******************************
'函数：CheckStr(byVal ChkStr)
'参数：ChkStr,待验证的字符
'作者：阿里西西
'日期：2007/7/15
'描述：对SQL注入危险字符进行重编码处理
'示例：CheckStr("and 1=1 or select * from")
'******************************
Function CheckStr(byVal ChkStr)
Dim Str:Str=ChkStr
Str=Trim(Str)
If IsNull(Str) Then
CheckStr = ""
Exit Function
End If
Dim re
Set re=new RegExp
re.IgnoreCase =True
re.Global=True
re.Pattern="(\r\n){3,}"
Str=re.Replace(Str,"$1$1$1")
Set re=Nothing
Str = Replace(Str,"'","''")
Str = Replace(Str, "select", "select")
Str = Replace(Str, "join", "join")
Str = Replace(Str, "union", "union")
Str = Replace(Str, "where", "where")
Str = Replace(Str, "insert", "insert")
Str = Replace(Str, "delete", "delete")
Str = Replace(Str, "update", "update")
Str = Replace(Str, "like", "like")
Str = Replace(Str, "drop", "drop")
Str = Replace(Str, "create", "create")
Str = Replace(Str, "modify", "modify")
Str = Replace(Str, "rename", "rename")
Str = Replace(Str, "alter", "alter")
Str = Replace(Str, "cast", "cast")
CheckStr=Str
End Function
'反编上面函数处理过的字符串
Function UnCheckStr(Str)
Str = Replace(Str, "select", "select")
Str = Replace(Str, "join", "join")
Str = Replace(Str, "union", "union")
Str = Replace(Str, "where", "where")
Str = Replace(Str, "insert", "insert")
Str = Replace(Str, "delete", "delete")
Str = Replace(Str, "update", "update")
Str = Replace(Str, "like", "like")
Str = Replace(Str, "drop", "drop")
Str = Replace(Str, "create", "create")
Str = Replace(Str, "modify", "modify")
Str = Replace(Str, "rename", "rename")
Str = Replace(Str, "alter", "alter")
Str = Replace(Str, "cast", "cast")
UnCheckStr=Str
End Function
%>
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