> On 3/26/11 10:03 AM, Jonathan wrote:
> > This problem with Jmol appears to be multifaceted.
> > 1) The path to Jmol looks strange, although the error messages do
> > appear to come from Jmol.
> > 2) It looks like something is being added to the top of the script
> > file for Jmol and confusing it.
> > 3) Could also related to the JavaVM you are using. Jmol is only
> > tested against the Sun/Oracle VM.
> >
> > *We are working on patches to Jmol in the present notebook. There are
> > still some asychronicity issues that I think I've almost got a handle
> > on. Let's not try to move this stuff to the new notebook until that
> > is solved. I hope today :)
>
> I already applied all of your patches to my local copy of the flask
> notebook, and I think everything is probably good to go except for the
> problem I outline below.
>
> Short version: when jmol requests a file, flask doesn't think the
> request comes from an authenticated user, so it redirects jmol to the
> notebook homepage so that jmol can log in. I think jmol should pass the
> session cookie with its request to let flask know that the request is
> coming from an authenticated user.
>
> Long version:
>
> I applied the following patch to devel/sagenb/flask_version/base.py:
>
> diff -r 91e83c46bae5 flask_version/base.py
> --- a/flask_version/base.py Wed Mar 16 03:40:25 2011 -0700
> +++ b/flask_version/base.py Sat Mar 26 18:59:17 2011 -0500
> @@ -23,6 +23,9 @@
> self.add_static_path('/javascript', DATA)
> self.add_static_path('/static', DATA)
> self.add_static_path('/java', DATA)
> + import mimetypes
> + mimetypes.add_type('text/plain','.jmol')
> +
>
> #######
> # Doc #
> @@ -267,6 +270,8 @@
> @app.before_request
> def set_notebook_object():
> g.notebook = notebook
> + if not request.path.endswith('alive'):
> + print "REQUEST: ", request
>
> ########################
> # Register the modules #
>
>
> The first hunk (from Ira Hanson) ensures that ".jmol" files are
> delivered as text (otherwise, it seems that they are delivered as binary
> something-or-other). The second hunk prints out every request that is
> made of the server. Then I opened a new worksheet and tried to create a
> jmol plot. Here is the relevant logging info:
>
>
> REQUEST: <Request 'http://localhost:8000/home/admin/309/JmolApplet' [GET]>
> REQUEST: <Request
> 'http://localhost:8000/home/admin/309/cells/1/sage0-size500.jmol?1301173518
> ' [GET]>
> REQUEST: <Request
> 'http://localhost:8000/?next=http%3A%2F%2Flocalhost%3A8000%2Fhome%2Fadmin%2
> F309%2Fcells%2F1%2Fsage0-size500.jmol%3F1301173518' [GET]>
>
> Notice that jmol tries to get the .jmol file. However, it is redirected
> to the root with a next query parameter. This indicates to me that
> flask did not think that jmol had permissions to get the file, and
> redirected jmol to the root so it could log in. So I think the key
> problem here is that when jmol tries to request the .jmol file, it isn't
> giving the necessary cookies or whatever to let flask know that it is
> part of the current session.
>
> So how do we solve this? How does flask know that jmol's request is
> part of the current logged-in session? If jmol passed the right cookie,
> I think that would do it. We could also just turn off authentication
> checks for retrieving files from cells, though that sounds risky. I
> think that would be what was done with the old notebook, though.
> Another thing we could do is pass a secret key to jmol which would
> enable it to retrieve the file, even if it didn't send the session
> cookie back to flask with its request for the file.
>
> Rado or Mike: how do you think we should get jmol requests to be
> recognized as requests coming from an authenticated user?
>
> Jonathan: do you know any other places where jmol is used behind a
> login, so it has to request files and data with some sort of session
> cookie or something?
>
Where can we find the flask notebook code with all the dependencies needed?
And any patches needed for sage?
Would be cool to toy with this locally.
Francois
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