zitadel/internal/api/oidc/token_client_credentials.go
Livio Spring 041af26917
feat(OIDC): add back channel logout (#8837)
# 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>
2024-10-31 15:57:17 +01:00

57 lines
1.4 KiB
Go

package oidc
import (
"context"
"time"
"github.com/zitadel/oidc/v3/pkg/oidc"
"github.com/zitadel/oidc/v3/pkg/op"
"github.com/zitadel/zitadel/internal/domain"
"github.com/zitadel/zitadel/internal/telemetry/tracing"
"github.com/zitadel/zitadel/internal/zerrors"
)
func (s *Server) ClientCredentialsExchange(ctx context.Context, r *op.ClientRequest[oidc.ClientCredentialsRequest]) (_ *op.Response, err error) {
ctx, span := tracing.NewSpan(ctx)
defer func() {
span.EndWithError(err)
err = oidcError(err)
}()
client, ok := r.Client.(*clientCredentialsClient)
if !ok {
return nil, zerrors.ThrowInternal(nil, "OIDC-ga0EP", "Error.Internal")
}
scope, err := op.ValidateAuthReqScopes(client, r.Data.Scope)
if err != nil {
return nil, err
}
scope, err = s.checkOrgScopes(ctx, client.resourceOwner, scope)
if err != nil {
return nil, err
}
session, err := s.command.CreateOIDCSession(ctx,
client.userID,
client.resourceOwner,
client.clientID,
"", // backChannelLogoutURI not needed for service user session
scope,
domain.AddAudScopeToAudience(ctx, nil, r.Data.Scope),
[]domain.UserAuthMethodType{domain.UserAuthMethodTypePassword},
time.Now(),
"",
nil,
nil,
domain.TokenReasonClientCredentials,
nil,
false,
"",
)
if err != nil {
return nil, err
}
return response(s.accessTokenResponseFromSession(ctx, client, session, "", "", false, true, true, false))
}