# StellaOps Reachability Benchmark (Public)

Deterministic, reproducible benchmark for reachability analysis tools.

## Goals
- Provide open cases with ground truth for reachable/unreachable sinks.
- Enforce determinism (hash-stable builds, fixed seeds, pinned deps).
- Enable fair scoring via the `rb-score` CLI and published schemas.

## Layout
- `cases/<lang>/<project>/` ƒ?" benchmark cases with deterministic Dockerfiles, pinned deps, oracle tests.
- `schemas/` ƒ?" JSON/YAML schemas for cases, entrypoints, truth, submissions.
- `benchmark/truth/` ƒ?" ground-truth labels (hidden/internal split optional).
- `benchmark/submissions/` ƒ?" sample submissions and format reference.
- `tools/scorer/` ƒ?" `rb-score` CLI and tests.
- `tools/build/` ƒ?" `build_all.py` (run all cases) and `validate_builds.py` (run twice and compare hashes).
- `baselines/` ƒ?" reference runners (Semgrep, CodeQL, Stella) with normalized outputs.
- `ci/` ƒ?" deterministic CI workflows and scripts.
- `website/` ƒ?" static site (leaderboard/docs/downloads).

Sample cases added (JS track):
- `cases/js/unsafe-eval` (reachable sink) ƒ+' `benchmark/truth/js-unsafe-eval.json`.
- `cases/js/guarded-eval` (unreachable by default) ƒ+' `benchmark/truth/js-guarded-eval.json`.
- `cases/js/express-eval` (admin eval reachable) ƒ+' `benchmark/truth/js-express-eval.json`.
- `cases/js/express-guarded` (admin eval gated by env) ƒ+' `benchmark/truth/js-express-guarded.json`.
- `cases/js/fastify-template` (template rendering reachable) ƒ+' `benchmark/truth/js-fastify-template.json`.

Sample cases added (Python track):
- `cases/py/unsafe-exec` (reachable eval) ƒ+' `benchmark/truth/py-unsafe-exec.json`.
- `cases/py/guarded-exec` (unreachable when FEATURE_ENABLE != 1) ƒ+' `benchmark/truth/py-guarded-exec.json`.
- `cases/py/flask-template` (template rendering reachable) ƒ+' `benchmark/truth/py-flask-template.json`.
- `cases/py/fastapi-guarded` (unreachable unless ALLOW_EXEC=true) ƒ+' `benchmark/truth/py-fastapi-guarded.json`.
- `cases/py/django-ssti` (template rendering reachable, autoescape off) ƒ+' `benchmark/truth/py-django-ssti.json`.

Sample cases added (Java track):
- `cases/java/spring-deserialize` (reachable Java deserialization) ƒ+' `benchmark/truth/java-spring-deserialize.json`.
- `cases/java/spring-guarded` (deserialization unreachable unless ALLOW_DESER=true) ƒ+' `benchmark/truth/java-spring-guarded.json`.
- `cases/java/micronaut-deserialize` (reachable Micronaut-style deserialization) ƒ+' `benchmark/truth/java-micronaut-deserialize.json`.
- `cases/java/micronaut-guarded` (unreachable unless ALLOW_MN_DESER=true) ƒ+' `benchmark/truth/java-micronaut-guarded.json`.
- `cases/java/spring-reflection` (reflection sink reachable via Class.forName) ƒ+' `benchmark/truth/java-spring-reflection.json`.

## Determinism & Offline Rules
- No network during build/test; pin images/deps; set `SOURCE_DATE_EPOCH`.
- Sort file lists; stable JSON/YAML emitters; fixed RNG seeds.
- All scripts must succeed on a clean machine with cached toolchain tarballs only.
- Java builds auto-use vendored Temurin 21 via `tools/java/ensure_jdk.sh` when `JAVA_HOME`/`javac` are absent.

## Licensing
- Apache-2.0 for all benchmark assets. Third-party snippets must be license-compatible and attributed.

## Quick Start (once populated)
```bash
# schema sanity checks (offline)
python tools/validate.py all schemas/examples

# score a submission (coming in task 513-008)
./tools/scorer/rb-score --cases cases --truth benchmark/truth --submission benchmark/submissions/sample.json

# deterministic case builds (skip a language when a toolchain is unavailable)
python tools/build/build_all.py --cases cases --skip-lang js
```

## Contributing
See CONTRIBUTING.md. Open issues/PRs welcome; please provide hashes and logs for reproducibility.