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 程式師世界 >> 編程語言 >> 網頁編程 >> ASP編程 >> 關於ASP編程 >> asp防CC攻擊代碼分享

asp防CC攻擊代碼分享

編輯:關於ASP編程

    <%
    Dim CC_Info(4),strInfo,strTemp
    If Session("CC_Info") = "" Then
    CC_Info(0) = "cclog.txt" '日志文件名
    CC_Info(1) = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
    CC_Info(2) = Request.ServerVariables("REMOTE_ADDR")
    CC_Info(3) = 10 'N秒內禁止刷新當前頁面
    CC_Info(4) = "badip.txt" 'IP黑名單文件名
    Session("CC_Info") = CC_Info(0) &"|"& CC_Info(1) &"|"& CC_Info(2) &"|"& CC_Info(3) &"|"& CC_Info(4)
    Else
    strInfo = Split(Session("CC_Info"),"|")
    CC_Info(0) = strInfo(0)
    CC_Info(1) = strInfo(1)
    CC_Info(2) = strInfo(2)
    CC_Info(3) = strInfo(3)
    CC_Info(4) = strInfo(4)
    End If

    Const chkRefresh = 1 '0關閉防刷新
    Const chkProxy = 1 '0關閉代理驗證
    Const chkBadIP = 1 '0關閉IP黑名單

    If Session("BadIP") = "" Then
    strInfo = ReadFile(CC_Info(4))
    If strInfo = "" Then strInfo = "chinavb.net"
    Session("BadIP") = strInfo
    Else
    strInfo = Session("BadIP")
    End If

    '/*第一層判斷,N秒內禁止刷新*/
    If chkRefresh = 1 Then
    If Session("RefreshTime")="" Then
    Session("RefreshTime")=Now()
    Else
    If DateDiff("s", Session("RefreshTime"), Now()) < CInt(CC_Info(3)) Then
    Response.Write("系統繁忙,請稍候再試!錯誤代碼001")
    Response.End()
    Else
    Session("RefreshTime")=Now()
    End If
    End If
    End If

    '/*第二層判斷,代理禁止查看*/
    If chkProxy = 1 Then
    If CC_Info(1) <> "" Then
    If InStr(strInfo,CC_Info(1)) = 0 Then
    strTemp = CC_Info(1) & vbCrLf
    If InStr(strInfo,CC_Info(2)) = 0 Then
    strTemp = strTemp & "[" & CC_Info(2) & "]" & vbCrLf
    End If
    SaveLog CC_Info(4),strTemp
    strInfo = strInfo & strTemp
    Session("BadIP") = strInfo
    End If
    '記錄CC攻擊日志
    SaveLog CC_Info(0),CC_Info(1) & "["& CC_Info(2) & "]" & Now() &vbCrLf
    Response.Write("系統繁忙,請稍候再試!錯誤代碼002")
    Response.End()
    End If
    End If

    '/*第三層判斷,IP黑名單禁止查看*/
    If chkBadIP = 1 Then
    If InStr(strInfo,CC_Info(2))>0 Then
    Response.Write("系統繁忙,請稍候再試!錯誤代碼003")
    Response.End()
    End If
    End If

    'ForReading=1,ForWriting=2,ForAppending=8
    Function SaveLog(filename, filecontent)
    On Error Resume Next
    Dim fso, thisfile
    filename = Server.MapPath(filename)
    Set fso = CreateObject("Scripting.FileSystemObject")
    If Err <> 0 Then
    Response.Write("寫入文件"&filename&"失敗,可能您的系統不支持FSO!")
    Response.End()
    End If
    Set thisfile = fso.OpenTextFile(filename, 8, True)
    thisfile.write (filecontent)
    thisfile.Close
    Set fso = Nothing
    End Function

    Function ReadFile(filename)
    On Error Resume Next
    Dim fso, thisfile
    Set fso = CreateObject("Scripting.FileSystemObject")
    If Err <> 0 Then
    Response.Write("讀取文件"&filename&"失敗,可能您的系統不支持FSO!")
    Response.End()
    End If
    Set thisfile = fso.OpenTextFile(Server.MapPath(filename), 1, True)
    ReadFile = thisfile.ReadAll
    thisfile.Close
    Set thisfile = Nothing
    Set fso = Nothing
    End Function
    %>

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