The collective.pwexpiry package is an add-on Product for Plone that brings the feature of controlling the password expiration in Plone. It is useful when there's a need of forcing the portal's members to follow the specific password policy. Created to emulate Active Directory password policies.

• Possibility to register and define custom password validation methods
• Possibility to define user's passwords period of validity
• Possibility to register custom notification actions to be triggered when the password's period of validity is getting closer
• Provides a script that can be periodically executed from the command line (i.e. by cron). The script checks for the user's passwords expiration dates and triggers the registered notification actions (i.e. sending email to the relevant users).
• Provides a protection mechanizm to avoid notifying given user twice the same day

1. Add collective.pwexpiry to your plone.recipe.zope2instance section's eggs:

   [instance]
   recipe = plone.recipe.zope2instance
   ...
   eggs =
       ...
       collective.pwexpiry

2. Install the Product via portal_quickinstaller.

The password's period of validity is set in the configuration registry tool, and have a default value of 90 days. It can be easily customized by creating a registry.xml file in your custom pakage's gereric setup profile containing the configuration code:

<registry>
    <record name="collective.pwexpiry.validity_period">
        <field type="plone.registry.field.Int">
            <title>Number od days for password validity</title>
        </field>
        <value>90</value>
    </record>
</registry>

By default - there is a notification action defined that sends the notification email to the user when his password period of validity is going to end in 15 days. But there is a possibility to register a custom methods that would be triggered according to their implementation.

To register your own notification action you need to::

1. Register adapter providing IExpirationCheck interface:

   <configure xmlns="http://namespaces.zope.org/zope">
     <adapter
       name="last_few_days_before_expiration"
       factory=".actions.LastFewDaysBeforeExpiration"
       provides="collective.pwexpiry.interfaces.IExpirationCheck"
       for="zope.interface.Interface"
       />
   </configure>

2. Implement the adapter's __call__ and notification_action methods:

   class LastFewDaysBeforeExpiration(object):
       implements(IExpirationCheck)
   
       # Trigger on number of days before password expiration
       notify_on = (7, 4, 3, 2, 1)
   
       def __init__(self, context):
           self.context = context
   
       def __call__(self, days_to_expire):
           """
           Returns True whe n the notification_action
           method have to be executed
           """
           try:
               notify_on = iter(self.notify_on)
           except TypeError:
               notify_on = (self.notify_on,)
   
           if days_to_expire in notify_on:
               return True
           else:
               return False
   
       def notification_action(self, userdata, days_to_expire):
           """
           Implementation of the notification action.
           In this case it's sendin an email notification
           """
           send_notification_email(userdata, days_to_expire)

The package allows to define your own password valdation methods executed when the user set his initial password on registration or changing his actual password by in the change password form or throught the password reset mechanizm.

To register your own notification action you need to:

1. Register adapter providing ``ICustomPasswordValidator`` interface::

    <configure xmlns="http://namespaces.zope.org/zope">
      <adapter
        name="my_password_policy"
        factory=".password_validators.MyPasswordValidator"
        provides="collective.pwexpiry.interfaces.ICustomPasswordValidator"
        for="zope.interface.Interface"
        />
    </configure>

2. Implement the adapter's ``__call__`` and ``notification_action`` methods::

     class MyPasswordValidator(object):
         implements(ICustomPasswordValidator)

         def __init__(self, context):
             self.context = context

         def validate(self, password, data):
             if len(password) < 8:
                 return _(u'Passwords must be at least 8 characters in length.')

The notification script should be executed once a day to check the user's passwords expiration dates and trigger relevant notification actions.

Here's an example of how the script can be executed from the command line:

$ cd ${buildoout:directory}
$ ./bin/instance run src/collective.pwexpiry/collective/pwexpiry/scripts/notify_and_expire.py ${your-plonesite-id}

The collective.pwexpiry package creates new user's properties:

• password_date - the date when the user has changed his passoword
• last_notification_date - the date when the last notification action has been performed for the user

In order to be able to control manually the new user's properties manually - there's a control panel form available under url: /@@pwexpiry-controlpanel.

Author

• Enfold Systems info@enfoldsystems.com

This package is licensed under the Zope Public License.