Download and save a webpage using vbscript - vbscript

Question

I am trying to give users the option to download and save a webpage to where ever they want. I have been looking all over for a solution but nothing seems to be working. I am using vbscript in classic asp.
This is what I tried last
dim xHttp: Set xHttp = createobject("Microsoft.XMLHTTP")
dim bStrm: Set bStrm = createobject("Adodb.Stream")
xHttp.Open "GET", "" &Session("ServerURL") & "/idautomation/IDAutomationStreamingLinear.aspx?D=MAPS$"&request.QueryString("catcode")&"%25"&request.QueryString("typecode")&"&X=0.09&BH=3&S=0&CC=T&LM=5&TM=7.5&ST=F", False
xHttp.Send
with bStrm
.type = 1 '//binary
.open
.write xHttp.responseBody
.savetofile "d:\DownloladPdf.pdf", 2 '//overwrite
end with
but its throwing a "Write to file failed. " on the .savetofile line.
I want the user to be able to chose where to save it to...

Answer 1

You can't save to the users computer from server side code VBscript directly as this would be a major security issue allowing drive by compromises of people browsing a web page. The reason possibly that it is throwing an error is that it is trying to save it server side, but there is no D: on the server.
Instead you want to serve the PDF to the browser using Response and let the browser display or save the PDF.
The below example is using a bytes array rather than a stream, but it should be similar. If you want to force it to download rather than show in the browser, change the content-disposition to attachment. You can also change the filename to whatever you like.
if Len(pdfBytes) > 0 then
Response.Clear()
Response.ContentType = "application/pdf"
Response.Charset = ""
Response.AddHeader "Cache-Control", "public, max-age=1" ' Setting Cache-Control to max-age=1 rather than no-cache due to IE8 bug
Response.AddHeader "content-disposition","inline; filename=filename.pdf"
Response.Buffer = True
Response.Expires = 0
Response.BinaryWrite(pdfBytes)
Response.Flush
Response.End
Response.Close
end if