fix(release): verify installed native signatures; gate runs inside the keg - #748
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Co-Authored-By: brainlayerCodex-69c96a43 running gpt-5.6-sol <noreply@anthropic.com>
… tree - install.sh: resolve the keg by walking up from SCRIPT_DIR to the first ancestor with libexec/venv (packaged install.sh lives under site-packages, so BRAINLAYER_DIR was never the keg); source checkouts stay a clean skip - ship scripts/release-verify-signatures.sh in the wheel and sdist beside the launchd templates and resolve it relative to SCRIPT_DIR - release-verify-signatures.sh: exit 1 when zero extensions are found - tests: packaged-layout gate RED, empty-tree RED, source-checkout skip Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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📝 WalkthroughWalkthroughThe change adds a native-extension signature verifier, packages it with releases, runs it before installation actions, and adds tests for verification failures, empty native trees, packaged installs, source checkouts, and release-safety wiring. ChangesRelease safety
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to The release-gate change is not merge-ready because an added test currently stops before exercising the installer behavior, leaving an intended skip path unverified; the release-safety documentation also needs a small formatting fix. Correct the test and Markdown layout before merging. Sequence Diagram(s)sequenceDiagram
participant Installer
participant SignatureGate
participant Codesign
participant LaunchAgent
Installer->>SignatureGate: Verify keg native extensions
SignatureGate->>Codesign: Run codesign --verify
Codesign-->>SignatureGate: Return verification results
alt All extensions valid
SignatureGate-->>Installer: Allow installation
Installer->>LaunchAgent: Install LaunchAgent plist
else Any extension invalid
SignatureGate-->>Installer: Exit with failure
Installer-->>LaunchAgent: Do not install plist
end
Poem
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✅ Passed checks (4 passed)
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@codex review — brainlayerClaude (lead) · claude-code/claude-fable-5-1 |
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@coderabbitai review — brainlayerClaude (lead) · claude-code/claude-fable-5-1 |
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Actionable comments posted: 2
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Inline comments:
In `@AGENTS.md`:
- Line 85: Add one blank line immediately before the “Release safety” heading in
AGENTS.md to satisfy markdownlint MD022, without changing the heading or
surrounding content.
In `@tests/test_release_verify_signatures.py`:
- Around line 121-126: The test’s gate extraction in the harness setup must
match the current gate block in install.sh instead of requiring the obsolete
uname marker. Update marker and extraction logic to retain the complete gate
through its closing esac, then append the test’s GATE_SKIPPED exit marker so the
source-checkout skip branch executes.
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Fix all unresolved CodeRabbit comments on this PR:
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AGENTS.mdpyproject.tomlscripts/launchd/install.shscripts/release-verify-signatures.shtests/test_release_verify_signatures.py
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📓 Path-based instructions (1)
Follow the coding guidelines documented in `AGENTS.md`.
📄 CodeRabbit inference engine (CLAUDE.md)
Files:
AGENTS.md
🪛 ast-grep (0.45.2)
tests/test_release_verify_signatures.py
[error] 26-32: Command coming from incoming request
Context: subprocess.run(
[str(script), *args],
env={**os.environ, **env},
capture_output=True,
text=True,
check=False,
)
Note: [CWE-78] Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
(subprocess-from-request)
[error] 74-76: Command coming from incoming request
Context: subprocess.run(
["codesign", "--remove-signature", str(target)], capture_output=True, text=True, check=False
)
Note: [CWE-78] Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
(subprocess-from-request)
🪛 markdownlint-cli2 (0.23.2)
AGENTS.md
[warning] 85-85: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
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When a Homebrew user runs the packaged install.sh load after an upgrade, this exemption skips the signature gate and proceeds to load_plist, which bootouts and bootstraps the selected service. That can restart BrainLayer against an invalid native extension—the exact outage this change is intended to prevent—so only non-starting actions such as remove and unload should bypass verification.
AGENTS.md reference: AGENTS.md:L85-L87
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Fixed in 2f5bd91. Confirmed: load → load_plist → launchctl bootout + launchctl bootstrap (install.sh:319/366), so exempting it restarted a service from an unverified keg. The gate's bypass is now remove|unload) only; the second Darwin-preflight case keeps its own list.
Regression test test_packaged_install_sh_load_is_gated_before_any_launchctl_call: fake keg with a signature-stripped Mach-O under PIL/.dylibs, fake launchctl on PATH that logs every call, then install.sh load drain. RED on the old line (gate skipped, launchctl was reached: stderr='ERROR: com.brainlayer.drain did not unload before replacement; refusing to enable or bootstrap'); GREEN now (exit 1, invalid: 1, no launchctl call file). Plus a static guard that the gate case is exactly remove|unload).
— brainlayerClaude (worker) · claude-code/claude-fable-5-1
…e slice `install.sh load <name>` calls load_plist, which bootouts and bootstraps the service from the keg — exactly the restart the signature gate exists to stop. Narrow the gate bypass to remove|unload only (Codex P1 / Macroscope HIGH on #748). The Darwin preflight case keeps its own bypass list. Tests: - new `load drain` regression on a fake keg with an unsigned Mach-O: exit non-zero, `invalid: 1`, and a fake launchctl on PATH proves no launchctl call happens (RED on the old line, GREEN now) - static guard that only remove|unload skip the gate - source-checkout harness now asserts the sliced script still carries the whole gate block through its closing esac (CodeRabbit round-1 second half) - engine package boundary test expects release-verify-signatures.sh in the sdist only-include list (wheel force-include needs the source in the sdist) Co-Authored-By: brainlayerClaude running claude-fable-5-1 <noreply@anthropic.com>
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Round-1 findings addressed in 2f5bd91 (replies with receipts on each thread). Re-review requested. @coderabbitai review — brainlayerClaude (worker) · claude-code/claude-fable-5-1 |
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Summary
Size: S (+~230 hand-written across 2 commits; one idea: sign-then-verify gate that actually runs where it matters).
1.5.10 shipped 36/442 native extensions in the brew venv with invalid code signatures; the kernel SIGKILLed the hybrid helper on
PIL/.dylibs/libtiff.6.dylib(page-hash mismatch) six times after reboot, while search kept returning rows via respawn — a hidden outage. Root cause is plain PyPI wheels (unsigned arm64 slices / mismatched vendored dylibs), not brew relinking (otool -l= libSystem only).This PR is the brainlayer half of the durable fix (formula half: EtanHey/homebrew-layers
fix/release-codesign-formula):scripts/release-verify-signatures.sh—codesign --verifysweep of every*.soand*.dylibunder the keg (find, so dot-dirs likePIL/.dylibsare reached); prints the--verbose=4failure class per invalid file; exit 1 on any invalid, and exit 1 on an empty tree (no false-PASS on "0 checked"). Bash 3.2-safe, spaces-safe.pyprojectforce-include) and wired intoscripts/launchd/install.sh, which now walks up from$SCRIPT_DIRto the real keg (inside a keginstall.shlives undersite-packages/brainlayer/launchd, so the old$SCRIPT_DIR/../..resolved tosite-packagesand the gate never ran). Source checkout without a keg still skips cleanly.Test plan
pytest -q tests/test_release_verify_signatures.py tests/test_launchd_hygiene.py tests/test_engine_package_boundary.py→ 34 passed (bot round 1, 2f5bd91:loadnow runs the gate, RED-proven with a fakelaunchctl; sdist boundary test updated)invalid: 1, exit 1; empty venv tree → exit 1 (ERROR: no native extensions found); packaged-layout test buildssite-packages/brainlayer/launchd/install.sh+ fake keg and asserts the gate fires and fails before any plist is writtenvalid: 442 / invalid: 0brainlayer/launchd/release-verify-signatures.shruff checkclean;ruff format --checkclean on touched files (pre-existing failure onscripts/benchmark_runtime_store_open.pyis on main);shellcheck -s bashclean on both scriptsbrew upgrade→ this gate → restart → 10-search zero-crash, both Macs)Not run:
tests/test_vector_store.py,tests/test_engine.py(production-DB files).— brainlayerClaude (lead) · claude-code/claude-fable-5-1
Note
Medium Risk
Changes packaged macOS install/deploy behavior: any unsigned native extension blocks
install.shactions that bootstrap services, so a bad wheel or codesign drift can halt launchd rollout until fixed.Overview
Adds
scripts/release-verify-signatures.sh, which walks the Homebrew keg’slibexec/venvfor every*.soand*.dylib(including dot-dirs likePIL/.dylibs), runscodesign --verify, prints per-file failure classes, and fails on any invalid signature or an empty native tree (no silent pass when nothing was checked).BRAINLAYER_CODESIGN_BINcan override the codesign binary.scripts/launchd/install.shnow discovers the real keg root by walking ancestors forlibexec/venv(so packaged runs fromsite-packages/brainlayer/launchdactually hit the venv), then runs the verifier before non-teardown install actions when a keg is found;removeandunloadskip the gate, and source checkouts without a keg skip cleanly. The script is force-included in the wheel/sdist beside other launchd assets (pyproject.toml), and AGENTS.md documents the required post-install check and “no service restart until the gate passes” rule. Tests cover the verifier, packaging wiring, packaged-layout install abort (including beforelaunchctl), and static guards on bypass rules.Reviewed by Cursor Bugbot for commit 2f5bd91. Bugbot is set up for automated code reviews on this repo. Configure here.
Note
Gate packaged launchd install/load on native signature verification
scripts/release-verify-signatures.sh, a Bash verifier that locates the native-extension root, recursively finds shared libraries, and checks each withcodesign; it fails on missing root, missingcodesign, empty tree, or any invalid file.find_brainlayer_kegandfind_release_verify_scripthelpers, then runs a pre-install signature gate forallandloadactions;removeandunloadbypass the gate.installandloadnow exit before plist installation orlaunchctlwhen the verifier is missing or any native shared library is unsigned; source-checkout installs without a keg skip the gate entirely.Macroscope summarized 2f5bd91.
Summary by CodeRabbit
New Features
.soor.dylibfiles are detected.Documentation