Login callbacks

There are cases where we want any plugin to do some check or action as part of the require_login check.

after_require_login

Moodle 3.7

This callback allow a plugin to add additional behavior after require_login is called. Some use cases:

• replacing the sitepolicy feature with a more robust / advanced version
• augmenting the 'user fully setup' workflow to add more steps but outside their profile editing page
• adding extra layers of checks, eg an ip address check but doing this across whole courses instead of at the sitelevel which is too coarse, or at the activity level which is too fine.
• enforcing various types of course visibility dependencies, eg 'before you can do course X you need to complete course Y'

function tool_myplugin_after_require_login() {

   if (should_divert()) {
       redirect($somewhere);
   }

}

Implemented in https://tracker.moodle.org/browse/MDL-60470

check_password_policy

Moodle 3.6

This callback allows a plugin to add additional password tests.

https://tracker.moodle.org/browse/MDL-61694

print_password_policy

Moodle 3.8

This callback allows a plugin to explain the additional password added via check_password_policy

https://tracker.moodle.org/browse/MDL-66278