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diango app, mod_python, and httpd

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How Django application could work with mod_python in a httpd server.

we need leverage on mod_python's AuthenHandler to implement a authentication provider for HTTPD server.  It will be used to providing authentication service on Proxy for the backend Plone site.

mod_python PythonAuthenHandler Implementation Based-on Session

The basic ideas, on session management on Database.

  • set SESSION_COOKIE_AGE=1800, which is 30 minutes session time out!
  • method authenhandler will get cookie value for SESSION_COOKIE_NAME (default is sessionid) from request!
  • check the Sessions database to make sure the session is exist and valid:
    • django.contrib.sessions.models.Session
    • expire_date should not be the future from now.
  • update the expire_date based on current date time, so user will keep get 30 minutes time out if they are keep working on this site.
  • set up corn job to run the session clean up script at daily base!
    $ python cleanup
  • introduced 2 Django settings attributes to set up the Plone authentication URL and the cookie name used by Plone session:

How to debug mod_python program?

The directive PythonEnablePdb is designed for debuging mod_python program.  It has to use with HTTPD's -DONE_PROCESS option together.  Check the following link for more details:

Using the default Django AuthenHandler

The following example is try to show how to use the default PythonAuthenHandler form Django to implement basic authentication for a proxy location.

ProxyRequests Off
ProxyPreserveHost On

<Proxy *>
 Order deny,allow
 Allow from all

<Location /external/site>

    AuthType Basic
    AuthName "External Proxy"
    AuthUserFile /dev/null
    AuthBasicAuthoritative Off
    Require valid-user

    PythonAuthenHandler django.contrib.auth.handlers.modpython
    PythonOption DJANGO_SETTINGS_MODULE leocornus.django.ploneproxy.settings
    PythonDebug On


Tracking History

When Who What Done
2010-05-17 06:24 Sean Chen the full workable prototype is ready now. revision r407
-- 2.0 Hours, 100.0% Done
2010-05-14 07:24 Sean Chen provide another implementation for PythonAuthenHanlder to use a customized authentication backend to do Plone user authentication. revision: r401
-- 2.0 Hours, 100.0% Done
2010-05-10 12:10 Sean Chen finished the simple and workable authentication handler based on Django Session, check in at revision: r400. story can be complete!
-- 1.0 Hours, 100.0% Done
2010-05-10 11:24 Sean Chen created a simple PythonAuthenHandler based on Django's default Session management! revision: r399, expire_date hasn't got updated yet!
-- 2.0 Hours, 80.0% Done
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