Re: [Cppcms-users] Check space left on device before file upload

[Lee E. <lee...@gm...>]

On Wed, Jul 11, 2012 at 8:09 AM, <ele...@ex...> wrote:

> > 1) Check available disk space after client sent Content-Length header,
> > decide whether to accept the request or not
>
> I suppose, the header could be forged, just like content-type.
>
> Even if it was not forged - the multi threaded nature of web apps (and OS
for that matter) means that an available space now might not be there while
the file uploads.


> > 2) Notify the application code, that upload failed because of too less
> > disk space (maybe one could do this via the existing infrastructure of
> > invoking validate() on the upload form field's widget instance and
> > adding another method that would return any occurred errors)
>
> Please have a look at boost::filesystem::space_info as it should do the
> trick.
>
> boost::filesystem::space_info will not tell you if the upload failed - the
solution has to come from inside cppcms. The library needs to give some
status for the file upload widget that will say whether the file was
uploaded all right or not.
The set() member function should give you this indication but it does not
set to false if the upload fails to load completely

Petr
>
>
>
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lee
Lee Elenbaas
lee...@gm...