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【ASP】防CC攻击代码

作者:newhandan / 发布于2012/11/15/ 746

<%

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) = 5 'N秒内禁止刷新当前页面
 CC_Info(4) = "/badip.txt" 'IP黑名单文件名
 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关闭防刷新
Const chkProxy = 1 '0关闭代理验证
Const chkBadIP = 1 '0关闭IP黑名单
If Session("BadIP") = "" Then
 strInfo = ReadFile(CC_Info(4))
 If strInfo = "" Then strInfo = "chinavb.net"
 Session("BadIP") = strInfo
Else
 strInfo = Session("BadIP")
End If
'/*第一层判断，N秒内禁止刷新*/
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("系统繁忙，请稍候再试！错误代码001")
   Response.End()
  Else
   Session("RefreshTime")=Now()
  End If
 End If
End If
'/*第二层判断，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
  '记录CC攻击日志
  SaveLog CC_Info(0),CC_Info(1) & "["& CC_Info(2) & "]" & Now() &vbCrLf
  Response.Write("系统繁忙，请稍候再试！错误代码002")
  Response.End()
 End If
End If
'/*第三层判断，IP黑名单禁止查看*/
If chkBadIP = 1 Then
 If InStr(strInfo,CC_Info(2))>0 Then
    Response.Write("系统繁忙，请稍候再试！错误代码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("写入文件"&filename&"失败，可能您的系统不支持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("读取文件"&filename&"失败，可能您的系统不支持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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