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'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'ASP通用防注入代码
'您可以把该代码COPY到头文件中.也可以单独作
'为一个文件存在,每次调用使用
'作者:y3gu - 2005-7-29
'http://www.dosu.cn
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Dim GetFlag Rem(提交方式)
Dim ErrorSql Rem(非法字符)
Dim RequestKey Rem(提交数据)
Dim ForI Rem(循环标记)
ErrorSql = "'~;~and~(~)~exec~update~count~*~%~chr~mid
~master~truncate~char~declare" Rem(每个敏感字符或者词语请使用半角
"~" 格开)
ErrorSql = split(ErrorSql,"~")
If Request.ServerVariables("REQUEST_METHOD")="GET"
Then
GetFlag=True
Else
GetFlag=False
End If
If GetFlag Then
For Each RequestKey In Request.QueryString
For ForI=0 To Ubound(ErrorSql)
If Instr(LCase(Request.QueryString(RequestKey)),
ErrorSql(ForI))<>0 Then
response.write "<script>alert(""警告:\n请不要使用敏感字符"");location.href=""Sql.asp"";</script>"
Response.End
End If
Next
Next
Else
For Each RequestKey In Request.Form
For ForI=0 To Ubound(ErrorSql)
If Instr(LCase(Request.Form(RequestKey)),
ErrorSql(ForI))<>0 Then
response.write "<script>alert(""警告:\n请不要使用敏感字符"");location.href=""Sql.asp"";</script>"
Response.End
End If
Next
Next
End If
%>
第二个
Function Checkstr(Str)
If Isnull(Str) Then
CheckStr = ""
Exit Function
End If
Str = Replace(Str,Chr(0),"", 1, －1, 1)
Str = Replace(Str, """", """,
1, －1, 1)
Str = Replace(Str,"<；","<；", 1,
－1, 1)
Str = Replace(Str,">；",">；", 1,
－1, 1)
Str = Replace(Str, "script", "script",
1, －1, 0)
Str = Replace(Str, "SCRIPT", "SCRIPT",
1, －1, 0)
Str = Replace(Str, "Script", "Script",
1, －1, 0)
Str = Replace(Str, "script", "Script",
1, －1, 1)
Str = Replace(Str, "object", "object",
1, －1, 0)
Str = Replace(Str, "OBJECT", "OBJECT",
1, －1, 0)
Str = Replace(Str, "Object", "Object",
1, －1, 0)
Str = Replace(Str, "object", "Object",
1, －1, 1)
Str = Replace(Str, "applet", "applet",
1, －1, 0)
Str = Replace(Str, "APPLET", "APPLET",
1, －1, 0)
Str = Replace(Str, "Applet", "Applet",
1, －1, 0)
Str = Replace(Str, "applet", "Applet",
1, －1, 1)
Str = Replace(Str, "[", "[")
Str = Replace(Str, "]", "]")
Str = Replace(Str, """", "",
1, －1, 1)
Str = Replace(Str, "=", "=", 1, －1,
1)
Str = Replace(Str, "’", "’’", 1, －1,
1)
Str = Replace(Str, "select", "select",
1, －1, 1)
Str = Replace(Str, "execute", "execute",
1, －1, 1)
Str = Replace(Str, "exec", "exec", 1,
－1, 1)
Str = Replace(Str, "join", "join", 1,
－1, 1)
Str = Replace(Str, "union", "union",
1, －1, 1)
Str = Replace(Str, "where", "where",
1, －1, 1)
Str = Replace(Str, "insert", "insert",
1, －1, 1)
Str = Replace(Str, "delete", "delete",
1, －1, 1)
Str = Replace(Str, "update", "update",
1, －1, 1)
Str = Replace(Str, "like", "like", 1,
－1, 1)
Str = Replace(Str, "drop", "drop", 1,
－1, 1)
Str = Replace(Str, "create", "create",
1, －1, 1)
Str = Replace(Str, "rename", "rename",
1, －1, 1)
Str = Replace(Str, "count", "count",
1, －1, 1)
Str = Replace(Str, "chr", "chr", 1,
－1, 1)
Str = Replace(Str, "mid", "mid", 1,
－1, 1)
Str = Replace(Str, "truncate", "truncate",
1, －1, 1)
Str = Replace(Str, "nchar", "nchar",
1, －1, 1)
Str = Replace(Str, "char", "char", 1,
－1, 1)
Str = Replace(Str, "alter", "alter",
1, －1, 1)
Str = Replace(Str, "cast", "cast", 1,
－1, 1)
Str = Replace(Str, "exists", "exists",
1, －1, 1)
Str = Replace(Str,Chr(13),"<；br>；", 1, －1,
1)
CheckStr = Replace(Str,"’","’’", 1,
－1, 1)
End Function
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