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fix(auth): preserve coarse project access fallback - #50

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bherila wants to merge 10 commits into
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codex/fix-project-membership-check-bypass
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bherila wants to merge 10 commits into
mainfrom
codex/fix-project-membership-check-bypass

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@bherila

@bherila bherila commented Aug 15, 2026

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Motivation

  • Fix an authorization bypass where project_permission_guard! treated Ok(None) from effective_project_permissions() as unrestricted and therefore skipped legacy coarse user_can_access_project() checks, allowing instance-level permissions to operate on projects a user should not touch.

Description

  • Change project_permission_guard! so that when effective_project_permissions() returns Ok(None) it falls back to calling ProjectAccessChecker::user_can_access_project(user_id, project_id) and enforces deny/fail-closed semantics.
  • Add a regression unit test permission_guard_preserves_legacy_coarse_project_denial that provides a LegacyDenyChecker (calls counter) to verify the fallback is invoked and denies access.
  • Add an Unreleased CHANGELOG.md entry describing the fix for the project-permission guard membership fallback.

Testing

  • Ran cargo check -p temps-auth --lib and it completed successfully.
  • Ran cargo fmt --all -- --check and it passed with no formatting changes required.
  • Ran cargo test -p temps-auth permission_guard::tests -- --nocapture and the suite (22 tests) passed successfully, including the new permission_guard_preserves_legacy_coarse_project_denial test.
  • Ran the single targeted test permission_guard_preserves_legacy_coarse_project_denial which passed, validating the legacy fallback behavior.

Codex Task

bherila and others added 10 commits August 15, 2026 07:45
Runs cargo check + lib tests on the tempsdev1 self-hosted runner for
pushes to main/feature/**/fix/** and manual dispatch. Scoped to push
and workflow_dispatch only (never pull_request/pull_request_target) so
fork PRs can never execute on the self-hosted host. Uses a persistent,
isolated CARGO_TARGET_DIR outside the runner work dir so the build
cache survives checkout cleans and is reused across runs.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
A warm CARGO_TARGET_DIR caches the example plugins' build-script fingerprint,
so after actions/checkout git-cleans the source tree the script is skipped and
include_dir!(".../web/dist") panics on the missing dir. Recreate the debug
placeholder assets up front so the check is independent of build-script cache.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
temps-cli embeds crates/temps-cli/dist via include_dir!; like the example
plugins its build.rs placeholder is skipped on a warm cache, so generalize the
prep step to cover every include_dir! dist target, not just the plugins.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…vy crates

cargo test --lib --workspace pulled in temps-domains' real-Pebble ACME tests,
which need a challenge-responder network this box can't provide. Match the
unit-a/unit-b crate list from rust-tests.yml instead (Docker+networking-heavy
crates run in hosted's dedicated integration jobs, not here).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Its local_provider tests launch a real bundled Chromium against live
example.com/github.com. The hosted ubuntu-latest image ships
google-chrome system-wide so headless_chrome reuses it; this self-hosted
box has no system browser, so headless_chrome auto-downloads one and the
parallel tests race on the binary (Text file busy) and debug ports (no
available ports between 8000 and 9000). It is a live-network browser
integration test, not a unit test, and hosted CI already covers it.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The tempsdev1 EC2 runner it targeted has been decommissioned (no
self-hosted runners are registered on this repo anymore), so every
push to main/feature/**/fix/** was queuing a job with nothing to pick
it up. Hosted CI (rust-tests.yml) already covers push and PR on
ubuntu-latest.
cargo fetch --locked warms the registry/deps cache synchronously, then
a full `cargo build --workspace --all-targets` kicks off in the
background (nohup, disowned) so opening the codespace isn't blocked
on it -- by the time you start editing, the workspace is already
compiled or close to it.
Full workspace builds/tests can pin every core and several GB of RAM
for minutes on this 51-crate workspace. Check load/memory before
running them locally, and prefer pushing to let hosted CI validate
when the box is already under load.
…ents

A single load check right before launching a build isn't enough when
multiple worktrees or subagents share a box -- builds kicked off
seconds apart can each pass the check and then land together, and a
few concurrent full/release builds is enough to thrash a shared host
(swap, OOM, runaway load). Re-check right before the build starts and
default to assuming something else may already be building.
@bherila
bherila force-pushed the codex/fix-project-membership-check-bypass branch from a704a5f to e3294fc Compare August 15, 2026 07:45
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📓 Changelog preview

This is what your commits will add to the generated CHANGELOG.md at release time (via git-cliff). Do not edit CHANGELOG.md by hand — it is generated from your Conventional Commit messages.

## [Unreleased]

### Added

- **devcontainer:** Prefetch cargo deps and background-build on create

### CI

- **self-hosted:** Add build/test workflow on push to bherila fork
- **self-hosted:** Recreate example-plugin web/dist before cargo check
- **self-hosted:** Also recreate temps-cli/dist placeholder
- **self-hosted:** Run hosted unit-test crate set, skip integration-heavy crates
- **self-hosted:** Exclude temps-screenshots live-browser tests

### Documentation

- Add local resource-awareness guidance to CLAUDE.md
- Emphasize local resource awareness with concurrent worktrees/agents

### Fixed

- **auth:** Preserve coarse project access fallback

### Miscellaneous

- **ci:** Remove dead self-hosted-ci workflow

@bherila

bherila commented Oct 11, 2026

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The functional change was carried into upstream security-hardening PR gotempsh#676 and its merged replacement gotempsh#677. Upstream gotempsh#676 explicitly lists this fork PR in its source coverage.

Fork main has now been fast-forwarded to upstream main at 7250ab59b38d3138014ade7f5d6391c856eaa4f7. Closing this obsolete fork PR as part of the upstream synchronization; its branch history is retained.

@bherila bherila closed this Oct 11, 2026
@bherila
bherila deleted the codex/fix-project-membership-check-bypass branch October 11, 2026 19:12
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