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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>
50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package senders
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import (
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"context"
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"github.com/zitadel/logging"
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"github.com/zitadel/zitadel/internal/api/authz"
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"github.com/zitadel/zitadel/internal/notification/channels"
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"github.com/zitadel/zitadel/internal/notification/channels/fs"
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"github.com/zitadel/zitadel/internal/notification/channels/instrumenting"
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"github.com/zitadel/zitadel/internal/notification/channels/log"
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"github.com/zitadel/zitadel/internal/notification/channels/set"
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)
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const setSpanName = "security_event_token.NotificationChannel"
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func SecurityEventTokenChannels(
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ctx context.Context,
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setConfig set.Config,
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getFileSystemProvider func(ctx context.Context) (*fs.Config, error),
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getLogProvider func(ctx context.Context) (*log.Config, error),
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successMetricName,
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failureMetricName string,
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) (*Chain, error) {
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if err := setConfig.Validate(); err != nil {
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return nil, err
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}
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channels := make([]channels.NotificationChannel, 0, 3)
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setChannel, err := set.InitChannel(ctx, setConfig)
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logging.WithFields(
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"instance", authz.GetInstance(ctx).InstanceID(),
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"callurl", setConfig.CallURL,
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).OnError(err).Debug("initializing SET channel failed")
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if err == nil {
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channels = append(
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channels,
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instrumenting.Wrap(
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ctx,
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setChannel,
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setSpanName,
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successMetricName,
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failureMetricName,
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),
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)
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}
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channels = append(channels, debugChannels(ctx, getFileSystemProvider, getLogProvider)...)
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return ChainChannels(channels...), nil
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}
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