ASP防注入之解決方案--加強版

防注入|解決 <%

'ASP防注入之解決方案
'特殊頁面處理
'因為有些頁通過流式傳遞(比如含有檔案上傳的表單)
'如果單一使用窮舉Form對象的操作就會出錯
'所以要把這些頁面過濾出來,同時在頁面中使用sql("檢測的字串")才行
'垃圾豬zero@new57.com
'http://blog.csdn.net/cfaq



'將本頁用include方法放在頭部以讓所有頁都可以調用,比如include在conn.asp裡
'如果有流式上傳的頁面請把該頁加到表page中,以防form衝突


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" '可以自己修改懷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()


'檢測當前頁是否是特殊頁是就調用 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



'檢測給定字串
sub N_sql(agsql)
'這裡是不記錄資料庫,如果要改請自己修改
N_check "CUS",req_Qs,"OTHER"
end sub

'檢測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

'檢測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

'檢測
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

'記錄並停止輸出
'ag 名稱
'agsql 內容
'sqltype 類型
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('請不要在參數中包含非法字元嘗試注入！');</Script>"
Response.Write "<span style='font-size:12px'>非法操作！系統做了如下記錄↓<br>"
Response.Write "操作ＩＰ："&N_userip&"<br>"
Response.Write "操作時間："&Now&"<br>"
Response.Write "操作頁面："&N_thispage&"<br>"
Response.Write "提交方式："&sqltype&"<br>"
Response.Write "提交參數："&ag&"<br>"
Response.Write "提交資料："&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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