Ooh.  I missed that.  I will look at connect's static.  Somebody really
ought to write a book on this stuff, but the book would have to be huge!
On Feb 18, 2012 11:12 AM, "tjholowaychuk" <[email protected]> wrote:

> connect's static() has security stuff built-in, so you can just use
> the session and a small middleware before static() to determine via
> database etc if they're allowed to access that file
>
> On Feb 18, 10:07 am, Avi Deitcher <[email protected]> wrote:
> > Played trivial pursuit with the kids today, it came up, I got the answer!
> >
> >
> >
> >
> >
> >
> >
> > On Sat, Feb 18, 2012 at 8:05 PM, C. Mundi <[email protected]> wrote:
> > > @deitcher: yeah. That's where I'm headed now.  I really messed myself
> up
> > > looking for something complicated when all I needed was to send a file.
> > > BTW...Dylan is always a good example.  :)
> > > On Feb 18, 2012 10:04 AM, "deitch" <[email protected]> wrote:
> >
> > >> Yeah, I would do that. However, I would not store the files that way,
> > >> because what if one file (dylan.mp3) is accessible to three users? So
> > >> I would do
> >
> > >> Files: /some/private/dir/music/files/dylan.mp3 (or some other naming
> > >> convention)
> > >> Path: /downloads/:user/:musicfile
> >
> > >> You *cannot* get to /some/private/dir/music/files/ directly by URL,
> > >> only to /downloads/:user/:musicfile, which first checks that the user
> > >> is authenticated to /downloads/:user, then checks if :musicfile is
> > >> allowed for user, and if it is, then fetches the file from its true
> > >> path.
> >
> > >> On Feb 18, 3:57 am, Edward Smith <[email protected]> wrote:
> > >> > I would put them in a directory not accessible by clients, and have
> node
> > >> > route urls with specific hashes, for each file for each user.  The
> route
> > >> > could be something like /$user/download/$hash (anything with a $ in
> > >> front
> > >> > of it will vary based off of user).  The combination of $user and
> $hash
> > >> > should be stored in a database so you can find out if it is valid
> and
> > >> what
> > >> > file it should be.  Then send the file.
> >
> > >> > I have never implemented something like this, but this is how I
> would
> > >> > probably do it.
> >
> > >> > On Fri, Feb 17, 2012 at 5:45 PM, C. Mundi <[email protected]> wrote:
> > >> > > This is obviously a solved problem.  I don't want to reinvent the
> > >> wheel.
> >
> > >> > > Imagine a digital music store.  I have a set of static files
> which I
> > >> need
> > >> > > to serve only to authenticated users.  So the set of accessible
> files
> > >> > > depends on the user.  How do I let each user get the files she is
> > >> entitled
> > >> > > to and no other files?
> >
> > >> > > Bad Idea 1: security by obscurity: hide the files behind query
> strings
> > >> > > generated on the fly for session.user in the form of nasty looking
> > >> hard to
> > >> > > guess hashes.  Ugly hack and vulnerable to brute force hash
> collision.
> > >> > > Yuck!
> >
> > >> > > Bad Idea 2: set up an instance of node-static.Server() for each
> > >> > > authenticated session, specifically serving a directory created on
> > >> the fly
> > >> > > for that session and containing symlinks to all (and only) files
> for
> > >> which
> > >> > > session.user has privileges.  The main server would redirect
> requests
> > >> for
> > >> > > files to the ad hoc static server.  Kludgus maximus!
> >
> > >> > > Good Idea: what you tell me.  :)
> >
> > >> > > --
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