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ASP 防XSS注入函数

 2009-05-04 10:40:34 来源:WEB开发网   
核心提示:'*'防XSS注入函数 更新于2009-04-21 by evio'与checkstr()相比, checkxss更加安全'*Function Checkxss(byVal ChkStr) Dim Str Str = ChkStr If IsNull(Str) Then Chec
'*************************************
'防XSS注入函数 更新于2009-04-21 by evio
'与checkstr()相比, checkxss更加安全
'*************************************
Function Checkxss(byVal ChkStr)
   Dim Str
   Str = ChkStr
   If IsNull(Str) Then
     CheckStr = ""
     Exit Function
   End If
   Str = Replace(Str, "&", "&")
   Str = Replace(Str, "'", "´")
   Str = Replace(Str, """", """)
     Str = Replace(Str, "<", "<")
     Str = Replace(Str, ">", ">")
     Str = Replace(Str, "/", "/")
     Str = Replace(Str, "*", "*")
   Dim re
   Set re = New RegExp
   re.IgnoreCase = True
   re.Global = True
   re.Pattern = "(w)(here)"
   Str = re.Replace(Str, "$1here")
   re.Pattern = "(s)(elect)"
   Str = re.Replace(Str, "$1elect")
   re.Pattern = "(i)(nsert)"
   Str = re.Replace(Str, "$1nsert")
   re.Pattern = "(c)(reate)"
   Str = re.Replace(Str, "$1reate")
   re.Pattern = "(d)(rop)"
   Str = re.Replace(Str, "$1rop")
   re.Pattern = "(a)(lter)"
   Str = re.Replace(Str, "$1lter")
   re.Pattern = "(d)(elete)"
   Str = re.Replace(Str, "$1elete")
   re.Pattern = "(u)(pdate)"
   Str = re.Replace(Str, "$1pdate")
   re.Pattern = "(\s)(or)"
   Str = re.Replace(Str, "$1or")
     re.Pattern = "(\n)"
   Str = re.Replace(Str, "$1or")
     '----------------------------------
     re.Pattern = "(java)(script)"
   Str = re.Replace(Str, "$1script")
     re.Pattern = "(j)(script)"
   Str = re.Replace(Str, "$1script")
     re.Pattern = "(vb)(script)"
   Str = re.Replace(Str, "$1script")
     '----------------------------------
     If Instr(Str, "exPRession") > 0 Then
         Str = Replace(Str, "expression", "e­xpression", 1, -1, 0) '防止xss注入
     End If
   Set re = Nothing
   Checkxss = Str
End Function

Tags:ASP XSS 注入

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