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‘ASP防注入之解决方案

‘特殊页面处理

‘因为有些页通过流式传递(比如含有文件上传的表单)

‘如果单一使用穷举Form对象的操作就会出错

‘所以要把这些页面过滤出来,同时在页面中使用sql(“检测的字串”)才行

‘垃圾猪zero@new57.com

‘http://blog.csdn.net/cfaq

‘将本页用include方法放在头部以让所有页都可以调用,比如include在conn.asp里

‘如果有流式上传的页面请把该页加到表page中,以防form冲突

Dim N_no,N_noarray,req_Qs,req_F,N_i,N_dbstr,Conn,N_rs,N_userIP,N_thispage

N_userip = Request.ServerVariables(“REMOTE_ADDR”)

N_thispage = LCase(Request.ServerVariables(“URL”))

N_no = “‘|;|and|exec|insert|select|delete|update|count|*|%|chr|mid|master|truncate|char|declare” ‘可以自己修改怀疑是注入操作的字串

N_noarray = split(LCase(N_no),”|”)

Call DBopen()

Call N_check_Qs()

Call N_checkPage()

Call DBCLose()

‘检测当前页是否是特殊页是就调用 N_check_form()

sub N_checkPage()

set N_rs = server.CreateObject(“ADODB.RecordSet”)

N_rs.open “select * from page where spcpage like ‘%”&N_thispage&”%'”,conn,1,1

if (N_rs.eof AND N_rs.Bof) then

Call N_check_form()

end if

N_rs.Close()

set N_rs = nothing

end sub

‘检测给定字串

sub N_sql(agsql)

‘这里是不记录数据库,如果要改请自己修改

N_check “CUS”,req_Qs,”OTHER”

end sub

‘检测Request.Form

sub N_check_form()

If Request.Form<>”” Then

For Each req_F In Request.Form

N_check req_F,Request.Form(req_F),”POST”

Next

end if

end sub

‘检测Request.QueryString

sub N_check_Qs()

If Request.QueryString<>”” Then

For Each req_Qs In Request.QueryString

N_check req_Qs,Request.QueryString(req_Qs),”GET”

Next

end if

end sub

‘检测

sub N_check(ag,agsql,sqltype)

For N_i=0 To Ubound(N_noarray)

If Instr(LCase(agsql),N_noarray(N_i))<>0 Then

call N_regsql(ag,agsql,sqltype)

Response.Write “MO”

end if

Next

end sub

‘记录并停止输出

‘ag 名称

‘agsql 内容

‘sqltype 类型

sub N_regsql(ag,agsql,sqltype)

if(sqltype<>”OTHER”) then

Conn.Execute(“insert into SqlIn(Sqlin_IP,SqlIn_Web,SqlIn_FS,SqlIn_CS,SqlIn_SJ) values(‘”&N_userip&”‘,'”&N_thispage&”‘,'”&sqltype&”‘,'”&ag&”‘,'”&agsql&”‘)”)

end if

Response.Write “<Script Language=JavaScript>alert(‘请不要在参数中包含非法字符尝试注入!’);</Script>”

Response.Write “<span style=’font-size:12px’>非法操作!系统做了如下记录↓<br>”

Response.Write “操作IP:”&N_userip&”<br>”

Response.Write “操作时间:”&Now&”<br>”

Response.Write “操作页面:”&N_thispage&”<br>”

Response.Write “提交方式:”&sqltype&”<br>”

Response.Write “提交参数:”&ag&”<br>”

Response.Write “提交数据:”&agsql&”</span>”

Response.end

end sub

Sub DBopen()

N_dbstr=”DBQ=”+server.mappath(“Sql.mdb”)+”;DefaultDir=;DRIVER={Microsoft Access Driver (*.mdb)};”

Set Conn=Server.CreateObject(“ADODB.CONNECTION”)

Conn.open N_dbstr

end SUB

Sub DBCLose()

Conn.close

Set Conn = Nothing

End sub

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