# Which Problems Are Solved
Currently ZITADEL supports RP-initiated logout for clients. Back-channel
logout ensures that user sessions are terminated across all connected
applications, even if the user closes their browser or loses
connectivity providing a more secure alternative for certain use cases.
# How the Problems Are Solved
If the feature is activated and the client used for the authentication
has a back_channel_logout_uri configured, a
`session_logout.back_channel` will be registered. Once a user terminates
their session, a (notification) handler will send a SET (form POST) to
the registered uri containing a logout_token (with the user's ID and
session ID).
- A new feature "back_channel_logout" is added on system and instance
level
- A `back_channel_logout_uri` can be managed on OIDC applications
- Added a `session_logout` aggregate to register and inform about sent
`back_channel` notifications
- Added a `SecurityEventToken` channel and `Form`message type in the
notification handlers
- Added `TriggeredAtOrigin` fields to `HumanSignedOut` and
`TerminateSession` events for notification handling
- Exported various functions and types in the `oidc` package to be able
to reuse for token signing in the back_channel notifier.
- To prevent that current existing session termination events will be
handled, a setup step is added to set the `current_states` for the
`projections.notifications_back_channel_logout` to the current position
- [x] requires https://github.com/zitadel/oidc/pull/671
# Additional Changes
- Updated all OTEL dependencies to v1.29.0, since OIDC already updated
some of them to that version.
- Single Session Termination feature is correctly checked (fixed feature
mapping)
# Additional Context
- closes https://github.com/zitadel/zitadel/issues/8467
- TODO:
- Documentation
- UI to be done: https://github.com/zitadel/zitadel/issues/8469
---------
Co-authored-by: Hidde Wieringa <hidde@hiddewieringa.nl>
# Which Problems Are Solved
Zitadel never stored or returned the requested `response_mode` in oidc
Auth Requests. This caused the oidc library to fallback to the default
based on the response_type.
# How the Problems Are Solved
- Store the `response_mode` in the Auth request repo
- Store the `response_mode` in the Auth request v2 events
- Return the `resonse_mode` from the Auth Request v1 and v2
`ResponseMode()` methods. (Was hard-coded to an empty string)
# Additional Changes
- Populate the `response_modes_supported` to the oidc Discovery
Configuration. When it was empty, the standard specifies the default of
`query` and `fragment`. However, our oidc library also supports
`form_post` and by this fix, zitadel now also supports this.
# Additional Context
- Closes#6586
- Reported
https://discord.com/channels/927474939156643850/1151508313717084220
---------
Co-authored-by: Livio Spring <livio.a@gmail.com>
* add token exchange feature flag
* allow setting reason and actor to access tokens
* impersonation
* set token types and scopes in response
* upgrade oidc to working draft state
* fix tests
* audience and scope validation
* id toke and jwt as input
* return id tokens
* add grant type token exchange to app config
* add integration tests
* check and deny actors in api calls
* fix instance setting tests by triggering projection on write and cleanup
* insert sleep statements again
* solve linting issues
* add translations
* pin oidc v3.15.0
* resolve comments, add event translation
* fix refreshtoken test
* use ValidateAuthReqScopes from oidc
* apparently the linter can't make up its mind
* persist actor thru refresh tokens and check in tests
* remove unneeded triggers
* fix: if device Code is selected Auth Code no longer a hard requirement
* fix: create device code app without auth code as grant type
* fix: don't show redirect uris in overview for devicecode app wizard
* feat: reload component when oidc app is updated
* fix: oidcapp is valid grantTypes cannot be empty
* fix: auth code not mandatory if refresh token and device code combined
* device auth: implement the write events
* add grant type device code
* fix(init): check if default value implements stringer
---------
Co-authored-by: adlerhurst <silvan.reusser@gmail.com>
* fix: org tests
* fix: org tests
* fix: user grant test
* fix: user grant test
* fix: project and project role test
* fix: project grant test
* fix: project grant test
* fix: project member, grant member, app changed tests
* fix: application tests
* fix: application tests
* fix: add oidc app test
* fix: add oidc app test
* fix: add api keys test
* fix: iam policies
* fix: iam and org member tests
* fix: clock skew validation
* revert crypto changes
* fix: tests
* fix project grant member commands
Co-authored-by: Livio Amstutz <livio.a@gmail.com>
