破解图片防盗链asp代码

<% Dim url, body, myCache    url = Request.QueryString("url") Set myCache = new cache  myCache.name = "picindex"&url If myCache.valid Then body = myCache.value Else body = GetWebData(url) myCache.add body,dateadd("d",1,now) End If If Err.Number = 0 Then Response.CharSet = "UTF-8" Response.ContentType = "application/octet-stream" Response.BinaryWrite body  Response.Flush Else Wscript.Echo Err.Description End if '取得数据  Public Function GetWebData(ByVal strUrl) Dim curlpath  curlpath = Mid(strUrl,1,Instr(8,strUrl,"/")) Dim Retri Set Retri = Server.CreateObject("Microsoft.XMLHTTP") With Retri  .Open "Get", strUrl, False,"","" .setRequestHeader "Referer", curlpath  .Send  GetWebData =.ResponseBody End With Set Retri = Nothing End Function 'cache类    class Cache  private obj 'cache内容  private expireTime '过期时间  private expireTimeName '过期时间application名  private cacheName 'cache内容application名  private path 'url    private sub class_initialize() path=request.servervariables("url") path=left(path,instrRev(path,"/")) end sub private sub class_terminate() end sub public property get blEmpty  '是否为空 if isempty(obj) then blEmpty=true else blEmpty=false end if end property    public property get valid  '是否可用(过期) if isempty(obj) or not isDate(expireTime) then valid=false elseif CDate(expireTime)<now then valid=false else valid=true end if end property    public property let name(str) '设置cache名  cacheName=str & path  obj=application(cacheName) expireTimeName=str & "expires" & path  expireTime=application(expireTimeName) end property    public property let expires(tm) '重设置过期时间  expireTime=tm  application.lock application(expireTimeName)=expireTime  application.unlock end property    public sub add(var,expire) '赋值 if isempty(var) or not isDate(expire) then exit sub end if obj=var  expireTime=expire  application.lock application(cacheName)=obj  application(expireTimeName)=expireTime  application.unlock end sub public property get value  '取值 if isempty(obj) or not isDate(expireTime) then value=null elseif CDate(expireTime)<now then value=null else value=obj end if end property    public sub makeEmpty() '释放application  application.lock application(cacheName)=empty  application(expireTimeName)=empty  application.unlock obj=empty  expireTime=empty end sub public function equal(var2) '比较 if typename(obj)<>typename(var2) then equal=false elseif typename(obj)="Object" then if obj is var2 then equal=true else equal=false end if elseif typename(obj)="Variant()" then if join(obj,"^")=join(var2,"^") then equal=true else equal=false end if else if obj=var2 then equal=true else equal=false end if end if end function end class  %>