# Which Problems Are Solved
ZITADEL currently selects the instance context based on a HTTP header
(see https://github.com/zitadel/zitadel/issues/8279#issue-2399959845 and
checks it against the list of instance domains. Let's call it instance
or API domain.
For any context based URL (e.g. OAuth, OIDC, SAML endpoints, links in
emails, ...) the requested domain (instance domain) will be used. Let's
call it the public domain.
In cases of proxied setups, all exposed domains (public domains) require
the domain to be managed as instance domain.
This can either be done using the "ExternalDomain" in the runtime config
or via system API, which requires a validation through CustomerPortal on
zitadel.cloud.
# How the Problems Are Solved
- Two new headers / header list are added:
- `InstanceHostHeaders`: an ordered list (first sent wins), which will
be used to match the instance.
(For backward compatibility: the `HTTP1HostHeader`, `HTTP2HostHeader`
and `forwarded`, `x-forwarded-for`, `x-forwarded-host` are checked
afterwards as well)
- `PublicHostHeaders`: an ordered list (first sent wins), which will be
used as public host / domain. This will be checked against a list of
trusted domains on the instance.
- The middleware intercepts all requests to the API and passes a
`DomainCtx` object with the hosts and protocol into the context
(previously only a computed `origin` was passed)
- HTTP / GRPC server do not longer try to match the headers to instances
themself, but use the passed `http.DomainContext` in their interceptors.
- The `RequestedHost` and `RequestedDomain` from authz.Instance are
removed in favor of the `http.DomainContext`
- When authenticating to or signing out from Console UI, the current
`http.DomainContext(ctx).Origin` (already checked by instance
interceptor for validity) is used to compute and dynamically add a
`redirect_uri` and `post_logout_redirect_uri`.
- Gateway passes all configured host headers (previously only did
`x-zitadel-*`)
- Admin API allows to manage trusted domain
# Additional Changes
None
# Additional Context
- part of #8279
- open topics:
- "single-instance" mode
- Console UI
This fix provides a possibility to pass a domain on the session, which
will be used (as rpID) to create a passkey / u2f assertion and
attestation. This is useful in cases where the login UI is served under
a different domain / origin than the ZITADEL API.
* command/crypto: DRY the code
- reuse the the algorithm switch to create a secret generator
- add a verifyCryptoCode function
* command: crypto code tests
* migrate webauthn package
* finish integration tests with webauthn mock client
* fix: WebAuthN when running under non default port
* fix: remove notification schema from list of views / failed events
* fix: auth method column type in user auth methods
* fix passwordless session handling
* only check passwordless when enabled in policy
* set preferred user name in webauthn
* fix tests
* add passwordless in setup
* fix(console): exclude credentials for passwordless (#1115)
* fix: exclude creds
* fix i18n type loginpolicy
* fix enter on dialog input
* remove arg
Co-authored-by: Max Peintner <max@caos.ch>
* fix: typo ZITADEL uppercase for OTP Issuer
* fix: password validation after change in current user agent
* fix: otp validation after setup in current user agent
* add waiting
* add waiting
* show u2f state
* regenerate css
* add useragentID to webauthn verify
* return mfa attribute in mgmt
* switch between providers
* use preferredLoginName for webauthn display
* some fixes
* correct translations for login
* add some missing event translations
* fix usersession test
* remove unnecessary cancel button on password change done
