2 commits

Author	SHA1	Message	Date
Airam Hernández Hernández	96f6976e00	🪂 fix: Automatic logout_hint Fallback for Oversized OpenID Token URLs (#12326) ... * fix: automatic logout_hint fallback for long OpenID tokens Implements OIDC RP-Initiated Logout cascading strategy to prevent errors when id_token_hint makes logout URL too long. Automatically detects URLs exceeding configurable length and falls back to logout_hint only when URL is too long, preserving previous behavior when token is missing. Adds OPENID_MAX_LOGOUT_URL_LENGTH environment variable. Comprehensive test coverage with 20 tests. Works with any OpenID provider. * fix: address review findings for OIDC logout URL length fallback - Replace two-boolean tri-state (useIdTokenHint/urlTooLong) with a single string discriminant ('use_token'|'too_long'|'no_token') for clarity - Fix misleading warning: differentiate 'url too long + no client_id' from 'no token + no client_id' so operators get actionable advice - Strict env var parsing: reject partial numeric strings like '500abc' that Number.parseInt silently accepted; use regex + Number() instead - Pre-compute projected URL length from base URL + token length (JWT chars are URL-safe), eliminating the set-then-delete mutation pattern - Extract parseMaxLogoutUrlLength helper for validation and early return - Add tests: invalid env values, url-too-long + missing OPENID_CLIENT_ID, boundary condition (exact max vs max+1), cookie-sourced long token - Remove redundant try/finally in 'respects custom limit' test - Use empty value in .env.example to signal optional config (default: 2000) --------- Co-authored-by: Airam Hernández Hernández <airam.hernandez@intelequia.com> Co-authored-by: Danny Avila <danny@librechat.ai>	2026-03-20 12:46:57 -04:00
Danny Avila	b18915a96b	🚪 fix: Complete OIDC RP-Initiated Logout With id_token_hint and Redirect Race Fix (#12024) ... * fix: complete OIDC logout implementation The OIDC logout feature added in #5626 was incomplete: 1. Backend: Missing id_token_hint/client_id parameters required by the RP-Initiated Logout spec. Keycloak 18+ rejects logout without these. 2. Frontend: The logout redirect URL was passed through isSafeRedirect() which rejects all absolute URLs. The redirect was silently dropped. Backend: Add id_token_hint (preferred) or client_id (fallback) to the logout URL for OIDC spec compliance. Frontend: Use window.location.replace() for logout redirects from the backend, bypassing isSafeRedirect() which was designed for user-input validation. Fixes #5506 * fix: accept undefined in setTokenHeader to properly clear Authorization header When token is undefined, delete the Authorization header instead of setting it to "Bearer undefined". Removes the @ts-ignore workaround in AuthContext. * fix: skip axios 401 refresh when Authorization header is cleared When the Authorization header has been removed (e.g. during logout), the response interceptor now skips the token refresh flow. This prevents a successful refresh from canceling an in-progress OIDC external redirect via window.location.replace(). * fix: guard against undefined OPENID_CLIENT_ID in logout URL Prevent literal "client_id=undefined" in the OIDC end-session URL when OPENID_CLIENT_ID is not set. Log a warning when neither id_token_hint nor client_id is available. * fix: prevent race condition canceling OIDC logout redirect The logout mutation wrapper's cleanup (clearStates, removeQueries) triggers re-renders and 401s on in-flight requests. The axios interceptor would refresh the token successfully, firing dispatchTokenUpdatedEvent which cancels the window.location.replace() navigation to the IdP's end_session_endpoint. Fix: - Clear Authorization header synchronously before redirect so the axios interceptor skips refresh for post-logout 401s - Add isExternalRedirectRef to suppress silentRefresh and useEffect side effects during the redirect - Add JSDoc explaining why isSafeRedirect is bypassed * test: add LogoutController and AuthContext logout test coverage LogoutController.spec.js (13 tests): - id_token_hint from session and cookie fallback - client_id fallback, including undefined OPENID_CLIENT_ID guard - Disabled endpoint, missing issuer, non-OpenID user - post_logout_redirect_uri (custom and default) - Missing OpenID config and end_session_endpoint - Error handling and cookie clearing AuthContext.spec.tsx (3 tests): - OIDC redirect calls window.location.replace + setTokenHeader - Non-redirect logout path - Logout error handling * test: add coverage for setTokenHeader, axios interceptor guard, and silentRefresh suppression headers-helpers.spec.ts (3 tests): - Sets Authorization header with Bearer token - Deletes Authorization header when called with undefined - No-op when clearing an already absent header request-interceptor.spec.ts (2 tests): - Skips refresh when Authorization header is cleared (the race fix) - Attempts refresh when Authorization header is present AuthContext.spec.tsx (1 new test): - Verifies silentRefresh is not triggered after OIDC redirect * test: enhance request-interceptor tests with adapter restoration and refresh verification - Store the original axios adapter before tests and restore it after all tests to prevent side effects. - Add verification for the refresh endpoint call in the interceptor tests to ensure correct behavior during token refresh attempts. * test: enhance AuthContext tests with live rendering and improved logout error handling - Introduced a new `renderProviderLive` function to facilitate testing with silentRefresh. - Updated tests to use the live rendering function, ensuring accurate simulation of authentication behavior. - Enhanced logout error handling test to verify that auth state is cleared without external redirects. * test: update LogoutController tests for OpenID config error handling - Renamed test suite to clarify that it handles cases when OpenID config is not available. - Modified test to check for error thrown by getOpenIdConfig instead of returning null, ensuring proper logging of the error message. * refactor: improve OpenID config error handling in LogoutController - Simplified error handling for OpenID configuration retrieval by using a try-catch block. - Updated logging to provide clearer messages when the OpenID config is unavailable. - Ensured that the end session endpoint is only accessed if the OpenID config is successfully retrieved. --------- Co-authored-by: cloudspinner <stijn.tastenhoye@gmail.com>	2026-03-02 21:34:13 -05:00