mirror of
https://mau.dev/maunium/synapse.git
synced 2024-12-17 15:23:53 +01:00
bbd244c7b2
Adds a new method, check_3pid_auth, which gives password providers the chance to allow authentication with third-party identifiers such as email or msisdn.
113 lines
4.8 KiB
ReStructuredText
113 lines
4.8 KiB
ReStructuredText
Password auth provider modules
|
|
==============================
|
|
|
|
Password auth providers offer a way for server administrators to integrate
|
|
their Synapse installation with an existing authentication system.
|
|
|
|
A password auth provider is a Python class which is dynamically loaded into
|
|
Synapse, and provides a number of methods by which it can integrate with the
|
|
authentication system.
|
|
|
|
This document serves as a reference for those looking to implement their own
|
|
password auth providers.
|
|
|
|
Required methods
|
|
----------------
|
|
|
|
Password auth provider classes must provide the following methods:
|
|
|
|
*class* ``SomeProvider.parse_config``\(*config*)
|
|
|
|
This method is passed the ``config`` object for this module from the
|
|
homeserver configuration file.
|
|
|
|
It should perform any appropriate sanity checks on the provided
|
|
configuration, and return an object which is then passed into ``__init__``.
|
|
|
|
*class* ``SomeProvider``\(*config*, *account_handler*)
|
|
|
|
The constructor is passed the config object returned by ``parse_config``,
|
|
and a ``synapse.module_api.ModuleApi`` object which allows the
|
|
password provider to check if accounts exist and/or create new ones.
|
|
|
|
Optional methods
|
|
----------------
|
|
|
|
Password auth provider classes may optionally provide the following methods.
|
|
|
|
*class* ``SomeProvider.get_db_schema_files``\()
|
|
|
|
This method, if implemented, should return an Iterable of ``(name,
|
|
stream)`` pairs of database schema files. Each file is applied in turn at
|
|
initialisation, and a record is then made in the database so that it is
|
|
not re-applied on the next start.
|
|
|
|
``someprovider.get_supported_login_types``\()
|
|
|
|
This method, if implemented, should return a ``dict`` mapping from a login
|
|
type identifier (such as ``m.login.password``) to an iterable giving the
|
|
fields which must be provided by the user in the submission to the
|
|
``/login`` api. These fields are passed in the ``login_dict`` dictionary
|
|
to ``check_auth``.
|
|
|
|
For example, if a password auth provider wants to implement a custom login
|
|
type of ``com.example.custom_login``, where the client is expected to pass
|
|
the fields ``secret1`` and ``secret2``, the provider should implement this
|
|
method and return the following dict::
|
|
|
|
{"com.example.custom_login": ("secret1", "secret2")}
|
|
|
|
``someprovider.check_auth``\(*username*, *login_type*, *login_dict*)
|
|
|
|
This method is the one that does the real work. If implemented, it will be
|
|
called for each login attempt where the login type matches one of the keys
|
|
returned by ``get_supported_login_types``.
|
|
|
|
It is passed the (possibly UNqualified) ``user`` provided by the client,
|
|
the login type, and a dictionary of login secrets passed by the client.
|
|
|
|
The method should return a Twisted ``Deferred`` object, which resolves to
|
|
the canonical ``@localpart:domain`` user id if authentication is successful,
|
|
and ``None`` if not.
|
|
|
|
Alternatively, the ``Deferred`` can resolve to a ``(str, func)`` tuple, in
|
|
which case the second field is a callback which will be called with the
|
|
result from the ``/login`` call (including ``access_token``, ``device_id``,
|
|
etc.)
|
|
|
|
``someprovider.check_3pid_auth``\(*medium*, *address*, *password*)
|
|
|
|
This method, if implemented, is called when a user attempts to register or
|
|
log in with a third party identifier, such as email. It is passed the
|
|
medium (ex. "email"), an address (ex. "jdoe@example.com") and the user's
|
|
password.
|
|
|
|
The method should return a Twisted ``Deferred`` object, which resolves to
|
|
a ``str`` containing the user's (canonical) User ID if authentication was
|
|
successful, and ``None`` if not.
|
|
|
|
As with ``check_auth``, the ``Deferred`` may alternatively resolve to a
|
|
``(user_id, callback)`` tuple.
|
|
|
|
``someprovider.check_password``\(*user_id*, *password*)
|
|
|
|
This method provides a simpler interface than ``get_supported_login_types``
|
|
and ``check_auth`` for password auth providers that just want to provide a
|
|
mechanism for validating ``m.login.password`` logins.
|
|
|
|
Iif implemented, it will be called to check logins with an
|
|
``m.login.password`` login type. It is passed a qualified
|
|
``@localpart:domain`` user id, and the password provided by the user.
|
|
|
|
The method should return a Twisted ``Deferred`` object, which resolves to
|
|
``True`` if authentication is successful, and ``False`` if not.
|
|
|
|
``someprovider.on_logged_out``\(*user_id*, *device_id*, *access_token*)
|
|
|
|
This method, if implemented, is called when a user logs out. It is passed
|
|
the qualified user ID, the ID of the deactivated device (if any: access
|
|
tokens are occasionally created without an associated device ID), and the
|
|
(now deactivated) access token.
|
|
|
|
It may return a Twisted ``Deferred`` object; the logout request will wait
|
|
for the deferred to complete but the result is ignored.
|