feat: SAML auth through deeplink by yash-rajpal · Pull Request #3458 · RocketChat/Rocket.Chat.Electron

yash-rajpal · 2026-08-13T19:56:15Z

Implements deeplink auth for SAML.

The web client passes the saml credential token in form of deeplink. The electron app parses the credential token and navigates the required host to saml/token path where web client is set to redeem the saml credential token.

CORE-2598

Summary by CodeRabbit

New Features
- Added support for SAML authentication through deep links.
- Credential tokens can now be securely encoded in SAML links and redeemed automatically.
- Added support for multiple authentication tokens and unknown server addresses.
- Existing authentication links continue to use the standard resume flow when applicable.

coderabbitai · 2026-08-13T19:56:27Z

Walkthrough

The deep-link handler now supports SAML credential-token redemption through /saml/:token. It validates SAML parameters, encodes tokens, resolves unknown servers, preserves standard authentication fallback, and adds focused test coverage.

Changes

SAML authentication deep links

Layer / File(s)	Summary
Authentication parameter dispatch `src/deepLinks/main.ts`	Adds `SamlAuthenticationParams` and routes `type=saml` links to `performAuthDeepLink`. Standard links retain `host`, `token`, and `userId` handling.
SAML token redemption and validation `src/deepLinks/main.ts`, `src/deepLinks/main.spec.ts`	Resolves or adds target servers, percent-encodes credential tokens, loads the `/saml/<token>` route, handles missing and distinct tokens, and preserves the existing resume-token fallback.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: 🟡 Moderate · up to 0e874

The PR adds SAML deeplink authentication, but navigation can be interrupted when multiple SAML links arrive before the first completes, risking an incorrect authentication flow. Test argument state can also leak after failures. Merge should wait for the navigation sequencing fix and guaranteed test cleanup.

Sequence Diagram(s)

sequenceDiagram
  participant AuthenticationDeepLinkDispatch
  participant performAuthDeepLink
  participant ServerWebContents
  AuthenticationDeepLinkDispatch->>performAuthDeepLink: dispatch type=saml with host and credentialToken
  performAuthDeepLink->>ServerWebContents: resolve or add target server
  performAuthDeepLink->>ServerWebContents: load /saml/{encoded credentialToken}

Suggested labels: type: feature, area: authentication

Suggested reviewers: jeanfbrito

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding SAML authentication through deep links.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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🔧 ESLint

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src/deepLinks/main.spec.ts

ESLint skipped: missing config or dependency (missing-dependency). The ESLint configuration references a package that is not available in the sandbox.

src/deepLinks/main.ts

ESLint skipped: the matched ESLint configuration already failed (missing-dependency).

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Errors (1)

CORE-2598: Request failed with status code 401

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Actionable comments posted: 2

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Inline comments:
In `@src/deepLinks/main.spec.ts`:
- Around line 791-798: Update the runSamlDeepLink helper to restore process.argv
in a finally block around processDeepLinksInArgs(), ensuring the original
arguments are restored even when deep-link processing rejects.

In `@src/deepLinks/main.ts`:
- Around line 185-197: Update performSamlAuthentication to await
webContents.loadURL before returning from the performOnServer callback,
preserving sequential processing of SAML deep links; add coverage for two queued
SAML links where the first navigation remains pending.

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Reviewing files that changed from the base of the PR and between 69a476f and 0e8745f.

📒 Files selected for processing (2)

src/deepLinks/main.spec.ts
src/deepLinks/main.ts

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**/*.{ts,tsx}