使用asp代碼突破圖片的防盜連
2024-05-04 11:02:10
供稿：網友
從網上來的代碼，，稍微修改了一些地方，其實用的是cache類。。
保存代碼為，比如pic.asp
使用:http://www.xxx.com/pic.asp?url=http://www.aaaa.com/log.gif
不光是163，其實就是很多防盜連的圖片都可以這個實現。
<%
'盜鏈判斷
'If Instr(Request.ServerVariables("http_referer"),"http://"&Request.ServerVariables("server_name")&"") = 0 Then
'Response.Write "非法鏈接"
'Response.End
'End If
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
'取得數據
Public Function GetWebData(ByVal strUrl)
Dim curlpath
curlpath = Mid(strUrl,1,Instr(8,strUrl,"/"))
Dim Retrieval
Set Retrieval = Server.CreateObject("Microsoft.XMLHTTP")
With Retrieval
.Open "Get", strUrl, False,"",""
.setRequestHeader "Referer", curlpath
.Send
GetWebData =.ResponseBody
End With
Set Retrieval = Nothing
End Function
'cache類
class Cache
private obj 'cache內容
private expireTime '過期時間
private expireTimeName '過期時間application名
private cacheName 'cache內容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
'是否為空
if isempty(obj) then
blEmpty=true
else
blEmpty=false
end if
end property
public property get valid
'是否可用(過期)
if isempty(obj) or not isDate(expireTime) then
valid=false
elseif CDate(expireTime)<now then
valid=false
else
valid=true
end if
