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< h1 id = "account-validity-callbacks" > < a class = "header" href = "#account-validity-callbacks" > Account validity callbacks< / a > < / h1 >
< p > 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
< code > register_account_validity_callbacks< / code > method.< / p >
< p > The available account validity callbacks are:< / p >
< h3 id = "is_user_expired" > < a class = "header" href = "#is_user_expired" > < code > is_user_expired< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.39.0< / em > < / p >
< pre > < code class = "language-python" > async def is_user_expired(user: str) -> Optional[bool]
< / code > < / pre >
< p > Called when processing any authenticated request (except for logout requests). The module
can return a < code > bool< / code > to indicate whether the user has expired and should be locked out of
their account, or < code > None< / code > if the module wasn't able to figure it out. The user is
represented by their Matrix user ID (e.g. < code > @alice:example.com< / code > ).< / p >
< p > If the module returns < code > True< / code > , the current request will be denied with the error code
< code > ORG_MATRIX_EXPIRED_ACCOUNT< / code > and the HTTP status code 403. Note that this doesn't
invalidate the user's access token.< / p >
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > None< / code > , Synapse falls through to the next one. The value of the first
callback that does not return < code > None< / code > will be used. If this happens, Synapse will not call
any of the subsequent implementations of this callback.< / p >
< h3 id = "on_user_registration" > < a class = "header" href = "#on_user_registration" > < code > on_user_registration< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.39.0< / em > < / p >
< pre > < code class = "language-python" > async def on_user_registration(user: str) -> None
< / code > < / pre >
< p > 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.< / p >
< p > If multiple modules implement this callback, Synapse runs them all in order.< / p >
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