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fix(supervisor): bound authenticated computer request bodies - #747
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Included review availability: Your plan provides up to 8 included reviews per hour; 4 remain after this review. 📝 WalkthroughWalkthroughThe supervisor now limits request bodies on ChangesSupervisor body limits
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to Computer-route request bodies are now capped with stable 413 responses for oversized requests, while POST file writes retain their required larger allowance. The change is covered for both body-reading paths and is ready to merge. Sequence Diagram(s)sequenceDiagram
participant Client
participant Supervisor
participant ComputerEndpoint
Client->>Supervisor: Send request to /computers route
Supervisor->>Supervisor: Select and enforce method-specific body limit
alt Body exceeds limit
Supervisor-->>Client: Return 413 JSON error
else Body is within limit
Supervisor->>ComputerEndpoint: Continue request
ComputerEndpoint-->>Client: Return endpoint response
end
Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Greptile SummaryThe PR adds authenticated request-body limits to the sandbox supervisor’s protected computer routes.
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| Filename | Overview |
|---|---|
| infra/sandboxes/supervisor/src/index.ts | Adds post-authentication body-limit middleware and selects a larger allowance only for the exact file-write POST route. |
| infra/sandboxes/supervisor/src/index.test.ts | Adds coverage for declared and streamed oversized bodies and for exact file-route limit selection. |
| infra/sandboxes/supervisor/package.json | Raises the Hono minimum version while retaining compatibility with the lockfile’s resolved version. |
| pnpm-lock.yaml | Updates affected workspace importers consistently to the new Hono minimum range. |
Flowchart
%%{init: {'theme': 'neutral'}}%%
flowchart TD
A[Request to /computers route] --> B{Valid service bearer?}
B -- No --> C[401 unauthorized]
B -- Yes --> D{POST /computers/:id/files?}
D -- Yes --> E[Apply 16 MiB + 64 KiB limit]
D -- No --> F[Apply 1 MiB limit]
E --> G{Body within limit?}
F --> G
G -- No --> H[413 JSON response]
G -- Yes --> I[Route JSON parsing and validation]
Reviews (2): Last reviewed commit: "fix(supervisor): POST-only file body lim..." | Re-trigger Greptile
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Actionable comments posted: 2
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Inline comments:
In `@infra/sandboxes/supervisor/src/index.ts`:
- Line 104: Update supervisorRequestBodyLimit to accept c.req.method and apply
the 16 MiB allowance only when the pathname matches and the method is POST;
preserve the existing smaller limit for non-POST requests and add an assertion
covering the non-POST case.
- Line 110: Update all four package manifests that constrain Hono to ^4.9.6,
raising each constraint to ^4.9.7 or later while preserving the existing Hono
resolution and framing-header regression test.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: Repository UI
Review profile: CHILL
Plan: Team
Run ID: 4c0f4136-ca96-4ea7-8a1e-daa4dd261f87
📒 Files selected for processing (2)
infra/sandboxes/supervisor/src/index.test.tsinfra/sandboxes/supervisor/src/index.ts
Included review availability: Your plan provides up to 8 included reviews per hour; 5 remain after this review.
Playwright screenshotsNo new feature frames; gallery is suite-vs-main drift. Open screenshot gallery · Dashboard · CI run Updated for commit |
Reserve the larger /computers/:id/files body allowance for POST, and raise package.json Hono floors to ^4.9.7 so vulnerable 4.9.6 cannot resolve. Co-authored-by: Elie Steinbock <elie222@users.noreply.github.com>
Why
The sandbox supervisor protects its computer routes with a service bearer, but its seven JSON write paths read the complete request body before Zod validation. A malfunctioning or compromised authenticated caller can therefore force the shared supervisor to buffer an unbounded payload and disrupt every managed computer.
What
/computersroute after authentication and before route JSON parsing.413for both declared-length and streamed oversized bodies.No user-visible copy or UI changes.
Tests
pnpm check(22/22 tasks)pnpm --filter @rakazo/sandbox-supervisor test(148 passed, 3 skipped)pnpm exec biome check infra/sandboxes/supervisor/src/index.ts infra/sandboxes/supervisor/src/index.test.tsgit diff --checkSummary by CodeRabbit
413 Payload Too Largeresponse.