- Define sitepolicy handler manager class, base class and the core handler
- Allow to set a plugin as sitepolicyhandler that implements the sitepolicy API
- Modify web services to return information from the 3rd party handler instead of core if needed
The patch introduces a new site setting 'sitepolicyhandler' that can be
either empty or contain a plugin component name. If it is empty, the
site policy feature keeps working as before and the core keeps the
control over it.
If a plugin is specified, it is expected to implement the callback
'site_policy_handler' in its lib.php file. The callback should return a
URL to a script where the user can accept the site policies. The plugin
itself is responsible for setting the 'policyagreed' flag in the users
table. The callback may return an empty value, in which case the user
can continue using the site without being redirected.
The patch adds support for a new pre-config flag NO_SITEPOLICY_CHECK.
This constant should be defined and set to true if we should not check
the user's policyagreed status during the require_login().
This is for pages where the user actually accepts the site policies and
helps to avoid the redirect loop.
If the admin specifies a Policy Agreement (via URL in the config variables)
then each user is required to see and agree to that document once before
continuing.
To get everyone to see it again (on an update, say) one just needs to issue:
UPDATE user SET policyagreed = 0
