防盜鏈接ASP函數(shù)
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簡單介紹下功能吧:使用了ASP的一個對象ServerVariables(服務(wù)器環(huán)境變量),通過這個環(huán)境變量可以獲取到真正的下載地址再通過一些簡單的VBS內(nèi)置函數(shù)破壞其真正地址的完整性。達(dá)到欺騙下載軟件的功能?,F(xiàn)附上源碼提供大家學(xué)習(xí)。 代碼如下: <% FunctIon DownloadFIle(StrFIle) StrFIlename=StrFIle Response.Buffer=True Response.Clear Set S=Server.CreateObJect("ADODB.Stream") S.Open S.Type=1 on Error Resume Next Set Fso=Server.CreateObJect("ScrIptIng.FIleSystemObJect") If Not Fso.FIleExists(StrFIleName) Then From_Url=Cstr(Request.ServerVarIables("HTTP_REFERER")) Serv_Url=Cstr(Request.ServerVarIables("SERVER_NAME")) If MId(From_Url,8,len(Serv_Url)) <> Serv_Url Then Response.WrIte "該文件不存在或者已經(jīng)刪除." Response.End End If Response.RedIrect Request.ServerVarIables("HTTP_REFERER") Response.End End If FileExt=MId(StrFIlename,InStrRev(StrFIleName, ".")+1) Select Case UCase(FIleExt) Case "ASP", "ASA", "ASPX", "ASAX", "MDB", "PHP", "JSP", "SHTML", "HTML", "HTM", "TV", "DATA" From_Url=Cstr(Request.ServerVarIables("HTTP_REFERER")) Serv_Url=Cstr(Request.ServerVarIables("SERVER_NAME")) If MId(From_Url,8,len(Serv_Url)) <> Serv_Url Then Response.WrIte "該文件不存在或者已經(jīng)刪除." Response.End End If Response.RedIrect Request.ServerVarIables("HTTP_REFERER") Response.End End Select Set F=Fso.GetFIle(StrFIlename) IntFIlelength=F.SIze s.LoadFromFIle(StrFIlename) If Err Then From_Url=Cstr(Request.ServerVarIables("HTTP_REFERER")) Serv_Url=Cstr(Request.ServerVarIables("SERVER_NAME")) If MId(From_Url,8,len(Serv_Url)) <> Serv_Url Then Response.WrIte "該文件數(shù)據(jù)不完整或許已損壞." Response.End End If Response.RedIrect Request.ServerVarIables("HTTP_REFERER") Response.End End If Set Upload=Server.CreateObJect("PersIts.Upload") If Upload Is Nothing Then Response.AddHeader "Content-DIsposItIon","attachment; FIlename="&F.Name Response.AddHeader "Content-Length",IntFilelength Response.CharSet="UTF-8" Response.ContentType="application/x-download" Response.BinaryWrite S.Read Response.Flush S.Close Set s=NothIng Else Upload.SendBinary StrFIlename,True,"application/x-download",False End If End FunctIon %> 使用:<%Call DownloadFIle("DownloadFIle")%>。
該文章在 2011/2/15 22:58:08 編輯過 |
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