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[PR #3162] [CLOSED] fix(main): safely guard realpathSync resolution during direct entrypoint check #5650

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opened 2026-10-31 01:08:16 +00:00 by bsakaguchi · 0 comments

bsakaguchi commented

2026-10-31 01:08:16 +00:00

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📋 Pull Request Information

Original PR: https://github.com/morluto/rea/pull/3162
Author: @qorvr
Created: 10/14/2026
Status: ❌ Closed

Base: main ← Head: fix/safe-entrypoint-resolution

📝 Commits (2)

4955893 fix(main): safely guard realpathSync during direct entrypoint check
ab10b36 test(main): test undefined entrypoint safely and guard parameter fallback

📊 Changes

2 files changed (+41 additions, -6 deletions)

View changed files

📝 src/main.ts (+17 -5)
📝 tests/boundary/mcp/mainErrors.test.ts (+24 -1)

📄 Description

Summary

When REA's MCP entrypoint module (src/main.ts) is imported in environments with synthetic, missing, bundled, or non-existent file paths in process.argv[1], the direct invocation check unconditionally called realpathSync(process.argv[1]). This throws an unhandled synchronous ENOENT / EINVAL error during module loading before any fallback or caller handling can execute.

Evaluated and error found by SubQ by Qorvr.

Problem and expected behavior

Smallest trigger: Importing src/main.ts or executing in a virtualized/bundled runtime where process.argv[1] does not point to an accessible on-disk file (or is undefined/invalid).
Observed failure: realpathSync(entryPath) throws an unhandled error immediately upon evaluation.
Expected behavior: Direct entrypoint check should safely evaluate whether argv[1] resolves to import.meta.url, and gracefully return false on any file-system resolution error without crashing module import.

Change and scope

Added an isDirectEntrypoint helper function that wraps pathToFileURL(realpathSync(entryPath)).href === currentUrl in a try / catch block.
Defaults safely to false when entryPath is undefined or cannot be resolved by realpathSync.
Added unit tests in tests/boundary/mcp/mainErrors.test.ts covering both undefined and invalid/non-existent entryPath.

Contract and boundary impact

Semantic owner and earliest changed stage: src/main.ts entrypoint guard.
Contribution scope fit and linked maintainer decision: not applicable (standard bug fix in existing boundary).
CLI and MCP/tool-catalog contract: none (internal guard).
Provider, bridge, target-format, or platform compatibility: improves resilience on environments where process.argv[1] may point to synthetic paths.
Evidence, artifact, provenance, or reconstruction contract: none.
Target selection, authority, upstream behavior, and cleanup details (if applicable): none.
Generated metadata impact: none.

Expected effects:

Read existing files or captured data.
Launch or attach to a process.
Inject instrumentation or run scripts/code.
Change process memory, registers, files, or configuration.
Contact network services.
Recover protected code or work around protections.
Documentation or usability only; no target interaction.
Not sure yet; investigation or maintainer guidance needed.

Evidence and regression coverage

Tests added or updated: Added tests in tests/boundary/mcp/mainErrors.test.ts to verify isDirectEntrypoint returns false safely for undefined and non-existent paths.
Base reproduction or other evidence: Calling realpathSync on a non-existent path throws ENOENT.
Remaining proof gaps: none.

For evidence-bearing changes:

Observed, derived, and inferred claims remain distinguishable.
Artifact identity, source provenance, and failed attempts remain preserved.
Unsupported, incomplete, unavailable, or uncertain outcomes remain visible.

Validation performed

npx vitest run tests/boundary/mcp/mainErrors.test.ts — 7 tests passed (including 2 new tests).
npm run format:check — oxfmt passed on all files.
npm run lint — oxlint passed with 0 errors; module boundary checks passed.
turbo run typecheck lint — passed.

Compatibility, safety, and release

Breaking changes or migration steps: none.
Real Hopper/Ghidra, browser, or OS coverage: cross-platform safe.
Package or release metadata impact: none.
Security, privacy, process, or containment review: safe exception handling.

Before merge

This PR addresses a concrete problem or an agreed enhancement.
Material scope and authority questions are resolved, and any required maintainer scope decision covers the final diff.
The PR has one focused outcome and the title follows type(scope): outcome.
Related issue is linked, or the reason for not linking one is stated above.
Tests cover changed observable behavior and meaningful failure paths.
Owning docs, contracts, and generated metadata are updated where needed.
User-visible CLI/MCP changes include representative output.
I checked the final diff for secrets, unrelated cleanup, and unsupported claims.

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/morluto/rea/pull/3162 **Author:** [@qorvr](https://github.com/qorvr) **Created:** 10/14/2026 **Status:** ❌ Closed **Base:** `main` ← **Head:** `fix/safe-entrypoint-resolution` --- ### 📝 Commits (2) - [`4955893`](https://github.com/morluto/rea/commit/4955893c0bc9bae221c1fc8f570da05dec483e39) fix(main): safely guard realpathSync during direct entrypoint check - [`ab10b36`](https://github.com/morluto/rea/commit/ab10b36ae8df06a2542cba7555d65c8d4ecce504) test(main): test undefined entrypoint safely and guard parameter fallback ### 📊 Changes **2 files changed** (+41 additions, -6 deletions) <details> <summary>View changed files</summary> 📝 `src/main.ts` (+17 -5) 📝 `tests/boundary/mcp/mainErrors.test.ts` (+24 -1) </details> ### 📄 Description ## Summary When REA's MCP entrypoint module (`src/main.ts`) is imported in environments with synthetic, missing, bundled, or non-existent file paths in `process.argv[1]`, the direct invocation check unconditionally called `realpathSync(process.argv[1])`. This throws an unhandled synchronous `ENOENT` / `EINVAL` error during module loading before any fallback or caller handling can execute. Evaluated and error found by SubQ by Qorvr. ## Problem and expected behavior - **Smallest trigger:** Importing `src/main.ts` or executing in a virtualized/bundled runtime where `process.argv[1]` does not point to an accessible on-disk file (or is undefined/invalid). - **Observed failure:** `realpathSync(entryPath)` throws an unhandled error immediately upon evaluation. - **Expected behavior:** Direct entrypoint check should safely evaluate whether `argv[1]` resolves to `import.meta.url`, and gracefully return `false` on any file-system resolution error without crashing module import. ## Change and scope - Added an `isDirectEntrypoint` helper function that wraps `pathToFileURL(realpathSync(entryPath)).href === currentUrl` in a `try / catch` block. - Defaults safely to `false` when `entryPath` is `undefined` or cannot be resolved by `realpathSync`. - Added unit tests in `tests/boundary/mcp/mainErrors.test.ts` covering both undefined and invalid/non-existent `entryPath`. ## Contract and boundary impact - Semantic owner and earliest changed stage: `src/main.ts` entrypoint guard. - Contribution scope fit and linked maintainer decision: not applicable (standard bug fix in existing boundary). - CLI and MCP/tool-catalog contract: none (internal guard). - Provider, bridge, target-format, or platform compatibility: improves resilience on environments where `process.argv[1]` may point to synthetic paths. - Evidence, artifact, provenance, or reconstruction contract: none. - Target selection, authority, upstream behavior, and cleanup details (if applicable): none. - Generated metadata impact: none. Expected effects: - [x] Read existing files or captured data. - [ ] Launch or attach to a process. - [ ] Inject instrumentation or run scripts/code. - [ ] Change process memory, registers, files, or configuration. - [ ] Contact network services. - [ ] Recover protected code or work around protections. - [ ] Documentation or usability only; no target interaction. - [ ] Not sure yet; investigation or maintainer guidance needed. ## Evidence and regression coverage - Tests added or updated: Added tests in `tests/boundary/mcp/mainErrors.test.ts` to verify `isDirectEntrypoint` returns `false` safely for undefined and non-existent paths. - Base reproduction or other evidence: Calling `realpathSync` on a non-existent path throws `ENOENT`. - Remaining proof gaps: none. For evidence-bearing changes: - [x] Observed, derived, and inferred claims remain distinguishable. - [x] Artifact identity, source provenance, and failed attempts remain preserved. - [x] Unsupported, incomplete, unavailable, or uncertain outcomes remain visible. ## Validation performed - `npx vitest run tests/boundary/mcp/mainErrors.test.ts` — 7 tests passed (including 2 new tests). - `npm run format:check` — oxfmt passed on all files. - `npm run lint` — oxlint passed with 0 errors; module boundary checks passed. - `turbo run typecheck lint` — passed. ## Compatibility, safety, and release - Breaking changes or migration steps: none. - Real Hopper/Ghidra, browser, or OS coverage: cross-platform safe. - Package or release metadata impact: none. - Security, privacy, process, or containment review: safe exception handling. ## Before merge - [x] This PR addresses a concrete problem or an agreed enhancement. - [x] Material scope and authority questions are resolved, and any required maintainer scope decision covers the final diff. - [x] The PR has one focused outcome and the title follows `type(scope): outcome`. - [x] Related issue is linked, or the reason for not linking one is stated above. - [x] Tests cover changed observable behavior and meaningful failure paths. - [x] Owning docs, contracts, and generated metadata are updated where needed. - [x] User-visible CLI/MCP changes include representative output. - [x] I checked the final diff for secrets, unrelated cleanup, and unsupported claims. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

bsakaguchi

2026-10-31 01:08:16 +00:00

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bsakaguchi referenced this issue

2026-11-01 21:44:42 +00:00

[PR #5650] [MERGED] fix(apple): read LC_LAZY_LOAD_DYLIB_INFO dependency payloads #7013

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