On Thu, 6 Nov 2008 08:34:42 +1300 "Jo Anonymous" <jojoanon_at_gmail.com> wrote:
> Cheers for your replies..
> Have tried both methods with no luck.
>
> Thorben, tried your method but it also didn't work for me, the results said:
>
> there was no no filename in the headers... Failed writing body

well, either the format of the header is different and the regular expression
does not match, or there is some kind of other problem... (see below)

> The problem I think is that the actual file itself does not exist on the
> server. It is just generated, so bascially all I need is a way to bypass the
> download prompt and have it somehow let me download without any user
> interaction.

it does, as far as curl (or for that matter http) is concerened, not make any
difference at all if the file is static or dynamically generated.
 
> Will give it another go, any other suggestions are greatly appreciated.

also, would you __PLEASE__ __CLARIFY__ what you mean by "download the file"???
do you want to store it in a file on your server?
do you even care about the name it would be saved as by a browser???
or do you maybe want to pass it through to the caller of your php script
(which is Stephen now assumes in his response).

also, "download to your server without any prompts" does not make any sense
at all, because curl (or php for that matter) would have no way to (even if it
wanted to!) display such a dialog like a browser would.
the browser shows the dialog because the server asks it to (using the
Content-Dispostion header), which a non-browser client (curl, wget, ...)
will simply ignore.

from your current responses, it seems most likely that the server
you are requesting the file from sends you a different response when you
request the file with curl than when you request it with a browser.

this could be due to some authentication scheme (do you need to be logged in?
cookies?, maybe limited by IP?),
or maybe some user-agent or similar check that is meant to prevent exactly what
you are doing?

another possibility would be that the server does not actually return data with a
content-disposition, but returnsn a redirect to another url (maybe a static file).

in the end, the only (and easy!) way to find out is to find out what response
curl actually gets from the server (statuscode, headers, and body), instead of
just saying that it "doesn't work", while you are not even specifying what your
intended result (=definition of "works") is.

and before you ask, here is some code to do just that.
please run it with your url, and post the output
(at least the headers).

<?
$handle=curl_init("http://blog.ninedays.org/demo/direct-to-download-images-and-pdfs/download.image.php");
curl_setopt($handle,CURLOPT_HEADER,1);
curl_exec($handle);
curl_close($handle);
?>

- Thorben

> On Wed, Nov 5, 2008 at 12:01 AM, Thorben Thuermer <
> t.thuermer_at_mediaclipping.de> wrote:
> > this is actually scarily related to the unanswered question i signed up to
> > this
> > list for...
> >
> > proper solution without downloading the file twice:
> > (but also using global variables)
> >
> > <?
> > // these should really be stored inside the curl context
> > global $filename;
> > global $outfile;
> >
> > function header_cb($handle,$h){
> > global $filename;
> > if(preg_match("/^Content-Disposition:
> > .*filename\=([^\\n|\\r]+)[\\n\\r]/", $h, $m)){
> > $filename=$m[1];
> > echo "got filename: ".$filename."\n";
> > }
> > return strlen($h);
> > }
> >
> > function data_cb($handle,$d){
> > global $filename;
> > global $outfile;
> > if (!$outfile){
> > $status=curl_getinfo($handle,CURLINFO_HTTP_CODE);
> > if ($status != 200){
> > echo "bad http status\n";
> > return -1;
> > }
> > if ($filename == null){
> > echo "there was no no filename in the headers...\n";
> > return -1;
> > }
> > $outfile=fopen($filename,"w");
> > }
> > return fwrite($outfile,$d);
> > };
> >
> > // testcase urls found via google:
> > $handle=curl_init("
> > http://blog.ninedays.org/demo/direct-to-download-images-and-pdfs/download.image.php
> > ");
> > //$handle=curl_init("
> > http://blog.ninedays.org/demo/direct-to-download-images-and-pdfs/original.jpg
> > ");
> >
> > curl_setopt($handle,CURLOPT_WRITEFUNCTION,"data_cb");
> > curl_setopt($handle,CURLOPT_HEADERFUNCTION,"header_cb");
> > $filename=null;
> > if (!curl_exec($handle)){
> > echo curl_error($handle)."\n";
> > }
> > if ($outfile) fclose($outfile);
> > curl_close($handle);
> >
> > ?>
> >
> > - Thorben
> >
> > On Mon, 3 Nov 2008 17:44:01 -0500
> > "Stephen Pynenburg" <spynenburg_at_gmail.com> wrote:
> > > There's probably a way to do it in one request, but I think you could
> > just
> > > as easily do this:
> > > <?PHP
> > > $ch = curl_init();
> > > curl_setopt($ch, CURLOPT_URL, "site/page.php");
> > > curl_setopt($ch, CURLOPT_HEADER, 1);
> > > curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
> > > $res = curl_exec($ch);
> > > preg_match("/filename\=(.*)\\n/", $res, $matches);
> > > echo $matches[1]; //the filename
> > > ?>
> > >
> > > Then do another request with the filename gleaned from that request.
> > >
> > > -Stephen
> > >
> > > 2008/11/3 Jo Anonymous <jojoanon_at_gmail.com>
> > >
> > > > Hello,
> > > >
> > > > I am trying to download a csv file which is generated from the url.
> > > >
> > > > I can login to the website using curl succesfully but I can't download
> > the
> > > > file I want.
> > > >
> > > > The download url looks something like this:
> > > >
> > > > http://www.websitename.com/file.aspx?type=all&download=1
> > > >
> > > > The website has this line in the header:
> > > >
> > > > header("Content-Disposition: attachment; filename=dada.csv");
> > > >
> > > > which brings up a download prompt.
> > > >
> > > > I just want to download the csv file to my server without any prompts.
> > > >
> > > > I've been trying for ages to figure this out, there must be a way.
> > > >
> > > > Many thanks in advance.
> > > >

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Received on 2008-11-06