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Account validity callbacks
Account validity callbacks allow module developers to add extra steps to verify the
validity on an account, i.e. see if a user can be granted access to their account on the
Synapse instance. Account validity callbacks can be registered using the module API's
register_account_validity_callbacks method.
The available account validity callbacks are:
is_user_expired
async def is_user_expired(user: str) -> Optional[bool]
Called when processing any authenticated request (except for logout requests). The module
can return a bool to indicate whether the user has expired and should be locked out of
their account, or None if the module wasn't able to figure it out. The user is
represented by their Matrix user ID (e.g. @alice:example.com).
If the module returns True, the current request will be denied with the error code
ORG_MATRIX_EXPIRED_ACCOUNT and the HTTP status code 403. Note that this doesn't
invalidate the user's access token.
If multiple modules implement this callback, they will be considered in order. If a
callback returns None, Synapse falls through to the next one. The value of the first
callback that does not return None will be used. If this happens, Synapse will not call
any of the subsequent implementations of this callback.
on_user_registration
async def on_user_registration(user: str) -> None
Called after successfully registering a user, in case the module needs to perform extra operations to keep track of them. (e.g. add them to a database table). The user is represented by their Matrix user ID.
If multiple modules implement this callback, Synapse runs them all in order.