It is not possible to do what you want in mod_wsgi as it doesn't aim
to provide a full on mechanism of writing arbitrary Apache handlers
for the different Apache phases.

For anything related to login and session management, suggest you look at:

http://www.openfusion.com.au/labs/mod_auth_tkt/

or if using Apache 2.4, the new mod_session module.

Also learn any necessary Apache configuration mechanism such as
mod_headers, mod_rewrite etc, so as to be able to do this sort of
thing in Apache itself in some way in conjunction with mod_session or
mod_auth_kit.

Graham

On 18 October 2012 12:50, Noorul Islam Kamal Malmiyoda
<[email protected]> wrote:
> On Monday, October 15, 2012 8:22:55 AM UTC+5:30, Graham Dumpleton wrote:
>>
>> The restriction on what mod_wsgi WSGIUserAuthScript does is because it
>> is implementing an Apache authentication provider and not a full
>> Apache handler. As such it isn't possible to override the status. That
>> is because of how Apache authentication providers work and not
>> mod_wsgi. The WSGIAccessScript is principally to do the equivalent of
>> 'All from host' so all it can do is signal whether forbidden or not.
>>
>> Anyway, post your existing mod_python access handler and may be able
>> to suggest something. If you were using an access handler to do
>> authentication you were technically abusing Apache in ways you
>> shouldn't. So not sure if will though have an answer.
>>
>
> What I am looking for is to get hold of access_checker phase of apache. See
> http://ci.apache.org/projects/httpd/trunk/doxygen/group__hooks.html
>
> It that possible using mod_wsgi?
>
> Thanks and Regards
> Noorul
>
>>
>> Graham
>>
>> On 15 October 2012 12:38, Noorul Islam Kamal Malmiyoda
>> <[email protected]> wrote:
>> > Hello all,
>> >
>> > In my current mod_python setup I have configured to serve some static
>> > files.
>> > See below snippet from httpd.conf
>> >
>> > Alias /files /path/to/static/files/folder
>> >
>> > <Location /files>
>> >      DirectoryIndex .files_index.html
>> >      AuthType Basic
>> >      AuthName "Library"
>> >      PythonPath "sys.path + ...."
>> >      PythonAccessHandler modpython_fileauth
>> >      PythonDebug Off
>> >      FileETag None
>> >      Header unset ETag
>> >      Header set Cache-Control "max-age=0, private"
>> >      Header set Expires "0"
>> > </Location>
>> >
>> > But these files can only be accessed by users based on some conditions.
>> > And
>> > these conditions are coded in modpython_fileauth. User can only see the
>> > Basic Auth pop-up based on some conditions because some of the paths
>> > based
>> > on several other conditions does not require authentication. This is
>> > achieved using req.get_basic_auth_pw() in mod_python. I am struggling to
>> > port this to mod_wsgi.
>> >
>> > As far as I know, it looks like mod_wsgi has two directives
>> > WSGIUserAuthScript and WSGIAccessScript. But these two have
>> > restrictions.
>> > From the corresponding python functions I am not able to request for
>> > Basic
>> > Auth from browser.  Yes, I can send 401 from application because it has
>> > start_response, but that is not possible from these methods because it
>> > is
>> > expecting to return True or False. And in the case of WSGIUserAuthScript
>> > the
>> > corresponding method is not called if "Require valid-user" is not set. I
>> > think it is not ideal to do something like this using wsgi application
>> > as I
>> > want Apache to serve all my files and python to do some validation
>> > before
>> > that.
>> >
>> > It will be helpful if those who encountered something similar could
>> > share
>> > their thoughts on this.
>> >
>> > Thanks and Regards
>> > Noorul
>> >
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