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# 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>
71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
package notification
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import (
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"context"
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"time"
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"github.com/zitadel/zitadel/internal/command"
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"github.com/zitadel/zitadel/internal/crypto"
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"github.com/zitadel/zitadel/internal/eventstore"
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"github.com/zitadel/zitadel/internal/eventstore/handler/v2"
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"github.com/zitadel/zitadel/internal/notification/handlers"
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_ "github.com/zitadel/zitadel/internal/notification/statik"
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"github.com/zitadel/zitadel/internal/query"
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"github.com/zitadel/zitadel/internal/query/projection"
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)
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var projections []*handler.Handler
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func Register(
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ctx context.Context,
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userHandlerCustomConfig, quotaHandlerCustomConfig, telemetryHandlerCustomConfig, backChannelLogoutHandlerCustomConfig projection.CustomConfig,
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telemetryCfg handlers.TelemetryPusherConfig,
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externalDomain string,
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externalPort uint16,
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externalSecure bool,
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commands *command.Commands,
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queries *query.Queries,
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es *eventstore.Eventstore,
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otpEmailTmpl, fileSystemPath string,
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userEncryption, smtpEncryption, smsEncryption, keysEncryptionAlg crypto.EncryptionAlgorithm,
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tokenLifetime time.Duration,
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) {
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q := handlers.NewNotificationQueries(queries, es, externalDomain, externalPort, externalSecure, fileSystemPath, userEncryption, smtpEncryption, smsEncryption)
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c := newChannels(q)
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projections = append(projections, handlers.NewUserNotifier(ctx, projection.ApplyCustomConfig(userHandlerCustomConfig), commands, q, c, otpEmailTmpl))
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projections = append(projections, handlers.NewQuotaNotifier(ctx, projection.ApplyCustomConfig(quotaHandlerCustomConfig), commands, q, c))
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projections = append(projections, handlers.NewBackChannelLogoutNotifier(
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ctx,
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projection.ApplyCustomConfig(backChannelLogoutHandlerCustomConfig),
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commands,
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q,
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es,
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keysEncryptionAlg,
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c,
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tokenLifetime,
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))
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if telemetryCfg.Enabled {
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projections = append(projections, handlers.NewTelemetryPusher(ctx, telemetryCfg, projection.ApplyCustomConfig(telemetryHandlerCustomConfig), commands, q, c))
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}
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}
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func Start(ctx context.Context) {
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for _, projection := range projections {
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projection.Start(ctx)
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}
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}
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func ProjectInstance(ctx context.Context) error {
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for _, projection := range projections {
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_, err := projection.Trigger(ctx)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func Projections() []*handler.Handler {
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return projections
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}
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