Phase 1: identity, sessions, audit, frontend shell

AD sign-in over LDAPS (search with the service account, bind as the user,
nested groups through LDAP_MATCHING_RULE_IN_CHAIN, disabled accounts refused),
roles as the union of PS-* groups mapped by a table derived from the seeded
departments. Server-side sessions with idle, lock and absolute timeouts, Origin
and X-Requested-With check, step-up unlock. Optional Argon2id PIN set with the
domain password; PIN sign-in by employee ID on registered devices only; five
wrong attempts disable the PIN, three wrong at unlock or signature end the
session. Rate limits per account and per address before any bind. Devices,
signatures table and sign helper, audit rows for every identity event, SSE over
LISTEN/NOTIFY with presence. Account settings and Admin APIs and screens
(AD view, devices, PIN clearing, group map with missing-group flags, refresh
from AD now). CLI ad-groups --list and ad-refresh. Migration 0002.

Frontend: real sign-in (password tab, PIN keypad on registered devices), lock
screen, role switcher, Account settings, Admin shell, screen placeholders.

CI: Samba AD DC container (PSTEST.LOCAL) with a generated CA, 49 of the 50
groups plus one extra, 17 test users; wired into the CI compose overlay and
the Gitea workflow; Playwright sign-in scenario.

Verified on docker-1: 171 server tests green inside the CI stack against
PostgreSQL and the Samba DC, 48 frontend tests, 8 Playwright scenarios against
the live stack (password and PIN sign-in, lock and unlock, Admin group map).
Findings recorded in the docs: the DC needs CAP_SYS_ADMIN, a hidden tab locks
only after a minute as the old build did,
and the app uses the alias ps-app for Playwright because "app" is on
Chromium's HSTS preload list.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

tests/server/test_origin.py

@@ -0,0 +1,90 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import Any
+
+import pytest
+from fakedir import FakeDirectory
+from fastapi.testclient import TestClient
+from pshelpers import ORIGIN_HEADERS, make_settings
+
+from packetstation.api.origin import allowed
+from packetstation.main import create_app
+
+
+def scope(method: str = "POST", path: str = "/api/auth/lock", scheme: str = "https", **headers: str) -> dict[str, Any]:
+    return {
+        "type": "http",
+        "method": method,
+        "path": path,
+        "scheme": scheme,
+        "headers": [(k.replace("_", "-").encode(), v.encode()) for k, v in headers.items()],
+    }
+
+
+def test_allowed_rules() -> None:
+    good = {"host": "ps.pesco.com", "origin": "https://ps.pesco.com", "x_requested_with": "PacketStation"}
+    assert allowed(scope(**good))
+    assert allowed(scope(method="GET", host="ps.pesco.com"))  # safe methods pass
+    assert allowed(scope(path="/healthz", host="x"))  # outside /api
+    assert not allowed(scope(**{**good, "origin": "https://evil.example"}))
+    assert not allowed(scope(**{**good, "origin": "http://ps.pesco.com"}))  # scheme must match
+    assert not allowed(scope(host="ps.pesco.com", origin="https://ps.pesco.com"))  # marker missing
+    assert not allowed(scope(**{**good, "x_requested_with": "XMLHttpRequest"}))
+    no_origin = {"host": "ps.pesco.com", "x_requested_with": "PacketStation"}
+    assert not allowed(scope(**no_origin))
+    assert allowed(scope(**no_origin, referer="https://ps.pesco.com/account"))
+    assert not allowed(scope(**no_origin, referer="https://ps.pesco.com.evil.example/"))
+    for method in ("PUT", "PATCH", "DELETE"):
+        assert not allowed(scope(method=method, host="ps.pesco.com"))
+
+
+@pytest.fixture
+def client(tmp_path: Path, dev_visual: None) -> TestClient:
+    return TestClient(create_app(make_settings(tmp_path), directory=FakeDirectory()))
+
+
+def test_wrong_origin_refused_on_signin(client: TestClient) -> None:
+    body = {"login": "clerk.clara", "password": "x"}
+    r = client.post("/api/auth/signin/password", json=body, headers={**ORIGIN_HEADERS, "Origin": "http://evil.example"})
+    assert r.status_code == 403
+    assert r.json() == {"detail": "Cross-origin request refused", "code": "bad_origin"}
+    assert r.headers["x-frame-options"] == "DENY"
+    r = client.post("/api/auth/signin/password", json=body, headers={"Origin": "http://testserver"})
+    assert r.status_code == 403 and r.json()["code"] == "bad_origin"
+
+
+def test_right_origin_passes_the_check(client: TestClient) -> None:
+    # No database here, so the request gets past the Origin check and stops at the database
+    r = client.post("/api/auth/signin/password", json={"login": "a", "password": "b"}, headers=ORIGIN_HEADERS)
+    assert r.status_code == 503
+    assert r.json()["code"] == "database_unavailable"
+
+
+def test_me_without_cookie_is_no_session(client: TestClient) -> None:
+    r = client.get("/api/auth/me")
+    assert r.status_code == 401
+    assert r.json()["code"] == "no_session"
+    assert client.get("/api/events").json()["code"] == "no_session"
+    assert client.get("/api/account").status_code == 401
+
+
+def test_context_without_device(client: TestClient) -> None:
+    r = client.get("/api/auth/context")
+    assert r.status_code == 200
+    assert r.json() == {"device": None, "stack": "ci", "insecure_ldap": False, "pin_digits": {"min": 6, "max": 12}}
+
+
+def test_validation_error_carries_a_code(client: TestClient) -> None:
+    r = client.post("/api/auth/signin/password", json={"login": "x"}, headers=ORIGIN_HEADERS)
+    assert r.status_code == 422
+    assert r.json()["code"] == "invalid_request"
+
+
+def test_missing_session_key_fails_cleanly(tmp_path: Path, dev_visual: None) -> None:
+    s = make_settings(tmp_path, session_key_file=tmp_path / "missing")
+    c = TestClient(create_app(s, directory=FakeDirectory()))
+    r = c.post("/api/auth/signin/password", json={"login": "a", "password": "b"}, headers=ORIGIN_HEADERS)
+    assert r.status_code == 503
+    assert r.json()["code"] == "server_misconfigured"
+    assert str(tmp_path) not in r.json()["detail"]