-'AbortLogin': DEPRECATED since 1.27! Create a PreAuthenticationProvider instead.
-Return false to cancel account login.
-$user: the User object being authenticated against
-$password: the password being submitted, not yet checked for validity
-&$retval: a LoginForm class constant to return from authenticateUserData();
- default is LoginForm::ABORTED. Note that the client may be using a machine
- API rather than the HTML user interface.
-&$msg: the message identifier for abort reason (new in 1.18, not available
- before 1.18)
-
-'AbortNewAccount': DEPRECATED since 1.27! Create a PreAuthenticationProvider
-instead. Return false to cancel explicit account creation.
-$user: the User object about to be created (read-only, incomplete)
-&$msg: out parameter: HTML to display on abort
-&$status: out parameter: Status object to return, replaces the older $msg param
- (added in 1.23)
- Create the object with Status::newFatal() to ensure proper API error
- messages are returned when creating account through API clients.
-