SSO using OpenID Connect (#3899)

* Add SSO functionality using OpenID Connect

Co-authored-by: Pablo Ovelleiro Corral <mail@pablo.tools>
Co-authored-by: Stuart Heap <sheap13@gmail.com>
Co-authored-by: Alex Moore <skiepp@my-dockerfarm.cloud>
Co-authored-by: Brian Munro <brian.alexander.munro@gmail.com>
Co-authored-by: Jacques B. <timshel@github.com>

* Improvements and error handling

* Stop rolling device token

* Add playwright tests

* Activate PKCE by default

* Ensure result order when searching for sso_user

* add SSO_ALLOW_UNKNOWN_EMAIL_VERIFICATION

* Toggle SSO button in scss

* Base64 encode state before sending it to providers

* Prevent disabled User from SSO login

* Review fixes

* Remove unused UserOrganization.invited_by_email

* Split SsoUser::find_by_identifier_or_email

* api::Accounts::verify_password add the policy even if it's ignored

* Disable signups if SSO_ONLY is activated

* Add verifiedDate to organizations::get_org_domain_sso_details

* Review fixes

* Remove OrganizationId guard from get_master_password_policy

* Add wrapper type OIDCCode OIDCState OIDCIdentifier

* Membership::confirm_user_invitations fix and tests

* Allow set-password only if account is unitialized

* Review fixes

* Prevent accepting another user invitation

* Log password change event on SSO account creation

* Unify master password policy resolution

* Upgrade openidconnect to 4.0.0

* Revert "Remove unused UserOrganization.invited_by_email"

This reverts commit 548e19995e141314af98a10d170ea7371f02fab4.

* Process org enrollment in accounts::post_set_password

* Improve tests

* Pass the claim invited_by_email in case it was not in db

* Add Slack configuration hints

* Fix playwright tests

* Skip broken tests

* Add sso identifier in admin user panel

* Remove duplicate expiration check, add a log

* Augment mobile refresh_token validity

* Rauthy configuration hints

* Fix playwright tests

* Playwright upgrade and conf improvement

* Playwright tests improvements

* 2FA email and device creation change

* Fix and improve Playwright tests

* Minor improvements

* Fix enforceOnLogin org policies

* Run playwright sso tests against correct db

* PKCE should now work with Zitadel

* Playwright upgrade maildev to use MailBuffer.expect

* Upgrades playwright tests deps

* Check email_verified in id_token and user_info

* Add sso verified endpoint for v2025.6.0

* Fix playwright tests

* Create a separate sso_client

* Upgrade openidconnect to 4.0.1

* Server settings for login fields toggle

* Use only css for login fields

* Fix playwright test

* Review fix

* More review fix

* Perform same checks when setting kdf

---------

Co-authored-by: Felix Eckhofer <felix@eckhofer.com>
Co-authored-by: Pablo Ovelleiro Corral <mail@pablo.tools>
Co-authored-by: Stuart Heap <sheap13@gmail.com>
Co-authored-by: Alex Moore <skiepp@my-dockerfarm.cloud>
Co-authored-by: Brian Munro <brian.alexander.munro@gmail.com>
Co-authored-by: Jacques B. <timshel@github.com>
Co-authored-by: Timshel <timshel@480s>

src/static/templates/scss/vaultwarden.scss.hbs

@@ -21,15 +21,33 @@ a[href$="/settings/sponsored-families"] {
 }
 
 /* Hide the sso `Email` input field */
+{{#if sso_disabled}}
 .vw-email-sso {
   @extend %vw-hide;
 }
+{{/if}}
+
+/* Hide the default/continue `Email` input field */
+{{#if (not sso_disabled)}}
+.vw-email-continue {
+  @extend %vw-hide;
+}
+{{/if}}
+
+/* Hide the `Continue` button on the login page */
+{{#if (not sso_disabled)}}
+.vw-continue-login {
+  @extend %vw-hide;
+}
+{{/if}}
 
 /* Hide the `Enterprise Single Sign-On` button on the login page */
 {{#if (webver ">=2025.5.1")}}
+{{#if sso_disabled}}
 .vw-sso-login {
   @extend %vw-hide;
 }
+{{/if}}
 {{else}}
 app-root ng-component > form > div:nth-child(1) > div > button[buttontype="secondary"].\!tw-text-primary-600:nth-child(4) {
   @extend %vw-hide;
@@ -53,9 +71,11 @@ app-root ng-component > form > div:nth-child(1) > div > button[buttontype="secon
 
 /* Hide the or text followed by the two buttons hidden above */
 {{#if (webver ">=2025.5.1")}}
+{{#if (or sso_disabled sso_only)}}
 .vw-or-text {
   @extend %vw-hide;
 }
+{{/if}}
 {{else}}
 app-root ng-component > form > div:nth-child(1) > div:nth-child(3) > div:nth-child(2) {
   @extend %vw-hide;
@@ -63,9 +83,11 @@ app-root ng-component > form > div:nth-child(1) > div:nth-child(3) > div:nth-chi
 {{/if}}
 
 /* Hide the `Other` button on the login page */
+{{#if (or sso_disabled sso_only)}}
 .vw-other-login {
   @extend %vw-hide;
 }
+{{/if}}
 
 /* Hide Two-Factor menu in Organization settings */
 bit-nav-item[route="settings/two-factor"],