On Tue, 19 Aug 2003, Mohun Biswas wrote:

> I'm using libcurl (7.10.6) to do a multipart file upload and it works fine.
> But now I want one of those parts to be "fake"; in other words it should
> look just like every other file upload part except that the contents do not
> come from a file but rather from a buffer which I provide. The part would
> look like this
>
> Content-Disposition: form-data; name="foo";\ filename="/full/path/to/foo"
> Content-Type: application/binary
>
> <data from a buffer, not from file "foo">
>
> All the examples I can find show only how to do a "real" file upload. I've
> tried various permutations without success. In particular the documentation
> for CURLFORM_BUFFER ("followed by a string, tells libcurl that a buffer is
> to be used to upload data instead of using a file..." sounds good, e.g.
>
> res = curl_formadd(&(glb->hg_formpost), &(glb->hg_lastptr),
> CURLFORM_BUFFER, pnp->pn_path,
> CURLFORM_BUFFERPTR, strdup(lnkbuf),
> CURLFORM_CONTENTTYPE, "application/binary",
> CURLFORM_END);
>
> Can anyone give a sample curl_formadd() invocation for this?

There is in fact an example of this in the curl_formadd() man page that looks
like this:

 /* Add a buffer to upload */
 curl_formadd(&post, &last,
              CURLFORM_COPYNAME, "name",
              CURLFORM_BUFFER, "data",
              CURLFORM_BUFFERPTR, record,
              CURLFORM_BUFFERLENGTH, record_length,
              CURLFORM_END);

'name' is the name of this part, 'data' is the name set in the file name
field.

-- 
 Daniel Stenberg -- curl: been grokking URLs since 1998
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