🔑 feat: SAML authentication (#6169)

* feat: add SAML authentication

* refactor: change SAML icon

* refactor: resolve SAML metadata paths using paths.js

* test: add samlStrategy tests

* fix: update setupSaml import

* test: add SAML settings tests in config.spec.js

* test: add client tests

* refactor: improve SAML button label and fallback localization

* feat: allow only one authentication method OpenID or SAML at a time

* doc: add SAML configuration sample to docker-compose.override

* fix: require SAML_SESSION_SECRET to enable SAML

* feat: update samlStrategy

* test: update samle tests

* feat: add SAML login button label to translations and remove default value

* fix: update SAML cert file binding

* chore: update override example with SAML cert volume

* fix: update SAML session handling with Redis backend

---------

Co-authored-by: Ruben Talstra <RubenTalstra1211@outlook.com>

api/server/routes/oauth.js

@@ -189,4 +189,24 @@ router.post(
   oauthHandler,
 );
 
+/**
+ * SAML Routes
+ */
+router.get(
+  '/saml',
+  passport.authenticate('saml', {
+    session: false,
+  }),
+);
+
+router.post(
+  '/saml/callback',
+  passport.authenticate('saml', {
+    failureRedirect: `${domains.client}/oauth/error`,
+    failureMessage: true,
+    session: false,
+  }),
+  oauthHandler,
+);
+
 module.exports = router;