feat(sso): SAML/OIDC single sign-on by 0ski · Pull Request #3911 · triggerdotdev/trigger.dev

0ski · 2026-06-11T17:23:55Z

SAML/OIDC Single Sign-On

Vendor-neutral SSO feature for Trigger.dev, built as a plugin contract + host wiring. With no SSO plugin installed, everything degrades to a no-op fallback — OSS / self-hosted deployments are completely unaffected.

Plugin contract + fail-open fallback

Contract in @trigger.dev/plugins (packages/plugins/src/sso.ts) — the vendor-neutral interface.
Lazy loader + OSS fallback in the new internal-packages/sso package. It dynamically imports the cloud plugin on first use; if absent, it swaps in a no-op SsoFallback. Every method returns a neverthrow Result, and the fallback is fail-open (decideRouteForEmail → no_sso, mutations → feature_disabled).
Gated behind SSO_ENABLED (default off) so the feature ships dark until its backing plugin is available.

Login & sign-in flows

A "Sign in with SSO" entry on the login page, plus a dedicated /login/sso flow and /auth/sso + /auth/sso/callback routes (SP- and IdP-initiated).
Auto-discovery: magic-link, GitHub, Google, and Vercel onboarding all check whether the email's domain requires SSO and reroute into the SSO flow before establishing a session.
IP + email rate limiting on the SSO entry point, reusing the magic-link limiter infrastructure.

Org settings → SSO page

Delivers plan-tier upsell, connection status, verified-domain list, enforcement toggle, JIT provisioning config, default-role selection, and an admin-portal link dialog.

Session lifecycle & enforcement

AuthUser carries an optional signed sso marker, so SSO-established sessions are self-describing.
Those sessions are periodically re-validated against the IdP — single-flight (Redis SET NX), hard-timeout, fail-open, logging out only on an explicit invalid result. Cadence via SSO_SESSION_REVALIDATION_INTERVAL_SECONDS.
JIT org provisioning via a new ensureOrgMember helper (idempotent, seat-check-exempt, RBAC-role-aware).

Data model

A new UserSsoIdentity-style relation (Prisma schema + migration) linking host users to IdP identities, enabling the fast existing-user-by-IdP login path.

changeset-bot · 2026-06-11T17:24:01Z

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coderabbitai · 2026-06-11T17:24:13Z

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Walkthrough

This PR introduces end-to-end SSO support across the monorepo. A new @trigger.dev/sso internal package provides a lazy plugin loader with a full OSS fallback controller. The webapp gains SSO environment variables, a database AuthenticationMethod.SSO enum value, a ssoController singleton, and new user/org-member server models for SSO-based JIT provisioning. Authentication services are extended with a SsoStrategy, auto-discovery helpers, and Redis-backed rate limiting. New Remix routes handle the SSO login page, authorization action, and callback with MFA carry-through. Existing GitHub, Google, and magic-link auth flows add domain-policy enforcement gates. Server-side SSO session revalidation runs on every authenticated request via a Redis-throttled check, with client-side window.fetch interception and EventSource probing for expired sessions. A new organization SSO settings route and updated navigation expose configuration to Enterprise org admins. An accounts webhook route and background worker process inbound IdP events.

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Commit unit tests in branch oskar/feat-sso

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pkg-pr-new · 2026-06-11T17:27:16Z

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commit: 44a124f

- vercel.onboarding: already-authenticated users whose domain requires SSO were redirected to /login/sso, which bounces authed users home and dropped the single-use Vercel code. Destroy the session first via authenticator.logout so /login/sso accepts them and the resume URL survives the round-trip (addresses PR #3911 review). - auth.sso.callback: sanitize redirectTo at the exit point (IdP-initiated values come from relay-state and never passed the host sanitizer) and attribute the referral source, matching the other auth callbacks. - ssoAuth: extract private early-return helpers (resolveSsoUserId, attachSsoIdentityBestEffort, provisionJitMembershipBestEffort, runPostAuthentication) and fail closed if the user can't be confirmed post-resolution instead of minting a session.

Vendor-neutral plugin contract plus the host wiring that consumes it. With no SSO plugin installed, everything degrades to a no-op fallback, so OSS deployments are unaffected. - Plugin contract (@trigger.dev/plugins) + lazy loader/fallback in internal-packages/sso: status, portal-link, enforce/JIT config, route-decision, begin/complete authorization, identity resolution, JIT evaluation, and periodic session validation. All methods return neverthrow Results; the fallback is fail-open. - Login: 'Sign in with SSO' entry + dedicated /login/sso flow and /auth/sso(.callback) routes, plus auto-discovery from magic-link/OAuth. - Org settings -> SSO page: plan-tier upsell, connection status, verified-domain list, enforcement + JIT provisioning + default-role configuration, and an admin-portal link dialog. - AuthUser carries an optional signed 'sso' marker; SSO-established sessions are periodically re-validated against the identity provider on a single-flight, throttled, fail-open basis and logged out only on an explicit invalid result. - SSO_ENABLED gate (default off) so the feature ships dark until its backing plugin is available; SSO_SESSION_REVALIDATION_INTERVAL_SECONDS controls the cadence.

ensureOrgMember's create + rbac.setUserRole + compensating delete are not transactional (the RBAC plugin writes on its own connection). The common single-failure case already recovers — a failed setUserRole deletes the row, so the next login retries cleanly. But if the compensating delete ALSO fails, the placeholder MEMBER row is orphaned and the findFirst no-op short-circuits every future login, stranding the user on the wrong role. When an existing membership is found and a JIT role is requested, complete the assignment if (and only if) the RBAC layer shows no role assigned. Gated on 'no role assigned' so it can never demote a deliberately-set role; best-effort so it never throws or rolls back a valid pre-existing membership. Addresses PR #3911 review.

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0ski marked this pull request as ready for review June 11, 2026 17:24

0ski self-assigned this Jun 11, 2026

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devin-ai-integration Bot reviewed Jun 18, 2026

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Comment thread apps/webapp/app/routes/login._index/route.tsx

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SAML/OIDC Single Sign-On

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