mirror of
https://github.com/element-hq/synapse
synced 2024-08-20 13:10:20 +00:00
117 lines
4.5 KiB
Markdown
117 lines
4.5 KiB
Markdown
|
# 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.
|