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Diffstat (limited to 'docs/modules')
| -rw-r--r-- | docs/modules/password_auth_provider_callbacks.md | 153 | ||||
| -rw-r--r-- | docs/modules/porting_legacy_module.md | 3 |
2 files changed, 156 insertions, 0 deletions
diff --git a/docs/modules/password_auth_provider_callbacks.md b/docs/modules/password_auth_provider_callbacks.md new file mode 100644 index 0000000000..36417dd39e --- /dev/null +++ b/docs/modules/password_auth_provider_callbacks.md @@ -0,0 +1,153 @@ +# Password auth provider callbacks + +Password auth providers offer a way for server administrators to integrate +their Synapse installation with an external authentication system. The callbacks can be +registered by using the Module API's `register_password_auth_provider_callbacks` method. + +## Callbacks + +### `auth_checkers` + +``` + auth_checkers: Dict[Tuple[str,Tuple], Callable] +``` + +A dict mapping from tuples of a login type identifier (such as `m.login.password`) and a +tuple of field names (such as `("password", "secret_thing")`) to authentication checking +callbacks, which should be of the following form: + +```python +async def check_auth( + user: str, + login_type: str, + login_dict: "synapse.module_api.JsonDict", +) -> Optional[ + Tuple[ + str, + Optional[Callable[["synapse.module_api.LoginResponse"], Awaitable[None]]] + ] +] +``` + +The login type and field names should be provided by the user in the +request to the `/login` API. [The Matrix specification](https://matrix.org/docs/spec/client_server/latest#authentication-types) +defines some types, however user defined ones are also allowed. + +The callback is passed the `user` field provided by the client (which might not be in +`@username:server` form), the login type, and a dictionary of login secrets passed by +the client. + +If the authentication is successful, the module must return the user's Matrix ID (e.g. +`@alice:example.com`) and optionally a callback to be called with the response to the +`/login` request. If the module doesn't wish to return a callback, it must return `None` +instead. + +If the authentication is unsuccessful, the module must return `None`. + +### `check_3pid_auth` + +```python +async def check_3pid_auth( + medium: str, + address: str, + password: str, +) -> Optional[ + Tuple[ + str, + Optional[Callable[["synapse.module_api.LoginResponse"], Awaitable[None]]] + ] +] +``` + +Called when a user attempts to register or log in with a third party identifier, +such as email. It is passed the medium (eg. `email`), an address (eg. `jdoe@example.com`) +and the user's password. + +If the authentication is successful, the module must return the user's Matrix ID (e.g. +`@alice:example.com`) and optionally a callback to be called with the response to the `/login` request. +If the module doesn't wish to return a callback, it must return None instead. + +If the authentication is unsuccessful, the module must return None. + +### `on_logged_out` + +```python +async def on_logged_out( + user_id: str, + device_id: Optional[str], + access_token: str +) -> None +``` +Called during a logout request for a user. 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. + +## Example + +The example module below implements authentication checkers for two different login types: +- `my.login.type` + - Expects a `my_field` field to be sent to `/login` + - Is checked by the method: `self.check_my_login` +- `m.login.password` (defined in [the spec](https://matrix.org/docs/spec/client_server/latest#password-based)) + - Expects a `password` field to be sent to `/login` + - Is checked by the method: `self.check_pass` + + +```python +from typing import Awaitable, Callable, Optional, Tuple + +import synapse +from synapse import module_api + + +class MyAuthProvider: + def __init__(self, config: dict, api: module_api): + + self.api = api + + self.credentials = { + "bob": "building", + "@scoop:matrix.org": "digging", + } + + api.register_password_auth_provider_callbacks( + auth_checkers={ + ("my.login_type", ("my_field",)): self.check_my_login, + ("m.login.password", ("password",)): self.check_pass, + }, + ) + + async def check_my_login( + self, + username: str, + login_type: str, + login_dict: "synapse.module_api.JsonDict", + ) -> Optional[ + Tuple[ + str, + Optional[Callable[["synapse.module_api.LoginResponse"], Awaitable[None]]], + ] + ]: + if login_type != "my.login_type": + return None + + if self.credentials.get(username) == login_dict.get("my_field"): + return self.api.get_qualified_user_id(username) + + async def check_pass( + self, + username: str, + login_type: str, + login_dict: "synapse.module_api.JsonDict", + ) -> Optional[ + Tuple[ + str, + Optional[Callable[["synapse.module_api.LoginResponse"], Awaitable[None]]], + ] + ]: + if login_type != "m.login.password": + return None + + if self.credentials.get(username) == login_dict.get("password"): + return self.api.get_qualified_user_id(username) +``` diff --git a/docs/modules/porting_legacy_module.md b/docs/modules/porting_legacy_module.md index a7a251e535..89084eb7b3 100644 --- a/docs/modules/porting_legacy_module.md +++ b/docs/modules/porting_legacy_module.md @@ -12,6 +12,9 @@ should register this resource in its `__init__` method using the `register_web_r method from the `ModuleApi` class (see [this section](writing_a_module.html#registering-a-web-resource) for more info). +There is no longer a `get_db_schema_files` callback provided for password auth provider modules. Any +changes to the database should now be made by the module using the module API class. + The module's author should also update any example in the module's configuration to only use the new `modules` section in Synapse's configuration file (see [this section](index.html#using-modules) for more info). |