synapse-old/docs/modules/account_validity_callbacks.md

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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.

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.