porchlight/tests/test_invite/test_service.py
Johan Lundberg 91a2277664
fix(security): store only a hash of magic-link tokens
Magic-link tokens were persisted in plaintext, so a database read disclosed
usable login/invite tokens. The service now hashes tokens (HMAC-SHA256 when a
pepper is configured, else SHA-256 of the high-entropy token) and persists
only the hash; the raw token is exposed solely in the registration URL and is
re-attached to objects returned to callers.

Refs: porchlight-42h

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-04 10:36:18 +02:00

125 lines
4.4 KiB
Python

from collections.abc import AsyncIterator
from datetime import UTC, datetime, timedelta
from pathlib import Path
import aiosqlite
import pytest
from porchlight.invite.service import MagicLinkService
from porchlight.store.sqlite.migrations import run_migrations
from porchlight.store.sqlite.repositories import SQLiteMagicLinkRepository
MIGRATIONS_DIR = (
Path(__file__).resolve().parent.parent.parent / "src" / "porchlight" / "store" / "sqlite" / "migrations"
)
@pytest.fixture
async def db() -> AsyncIterator[aiosqlite.Connection]:
conn = await aiosqlite.connect(":memory:")
conn.row_factory = aiosqlite.Row
await conn.execute("PRAGMA foreign_keys=ON")
await run_migrations(conn, MIGRATIONS_DIR)
yield conn
await conn.close()
@pytest.fixture
def repo(db: aiosqlite.Connection) -> SQLiteMagicLinkRepository:
return SQLiteMagicLinkRepository(db)
@pytest.fixture
def service(repo: SQLiteMagicLinkRepository) -> MagicLinkService:
return MagicLinkService(repo=repo, ttl=3600)
async def test_create_returns_magic_link(service: MagicLinkService) -> None:
link = await service.create(username="alice")
assert link.username == "alice"
assert link.token # non-empty
assert link.used is False
assert link.expires_at > datetime.now(UTC)
async def test_token_stored_hashed_not_plaintext(service: MagicLinkService, repo: SQLiteMagicLinkRepository) -> None:
# The raw token handed to the user must never be the value persisted in
# the store; a DB read must not yield a usable token.
link = await service.create(username="alice")
raw = link.token
assert await repo.get_by_token(raw) is None
# ...but the raw token must still validate through the service.
validated = await service.validate(raw)
assert validated is not None
assert validated.username == "alice"
async def test_create_generates_unique_tokens(service: MagicLinkService) -> None:
link1 = await service.create(username="alice")
link2 = await service.create(username="bob")
assert link1.token != link2.token
async def test_create_with_optional_fields(service: MagicLinkService) -> None:
link = await service.create(username="alice", created_by="admin-id", note="Welcome")
assert link.created_by == "admin-id"
assert link.note == "Welcome"
async def test_create_respects_ttl(service: MagicLinkService) -> None:
link = await service.create(username="alice")
expected_min = datetime.now(UTC) + timedelta(seconds=3500)
expected_max = datetime.now(UTC) + timedelta(seconds=3700)
assert expected_min < link.expires_at < expected_max
async def test_validate_valid_token(service: MagicLinkService) -> None:
link = await service.create(username="alice")
result = await service.validate(link.token)
assert result is not None
assert result.token == link.token
assert result.username == "alice"
async def test_validate_nonexistent_token(service: MagicLinkService) -> None:
result = await service.validate("nonexistent-token")
assert result is None
async def test_validate_used_token(service: MagicLinkService) -> None:
link = await service.create(username="alice")
await service.mark_used(link.token)
result = await service.validate(link.token)
assert result is None
async def test_validate_expired_token(service: MagicLinkService, repo: SQLiteMagicLinkRepository) -> None:
# Create a link that's already expired by using a negative TTL
expired_service = MagicLinkService(repo=repo, ttl=-1)
link = await expired_service.create(username="alice")
# The link expires_at is essentially now, so by the time we validate it should be expired
result = await service.validate(link.token)
assert result is None
async def test_mark_used_returns_true(service: MagicLinkService) -> None:
link = await service.create(username="alice")
result = await service.mark_used(link.token)
assert result is True
async def test_mark_used_nonexistent_returns_false(service: MagicLinkService) -> None:
result = await service.mark_used("nonexistent")
assert result is False
async def test_cleanup_expired(service: MagicLinkService, repo: SQLiteMagicLinkRepository) -> None:
# Create an expired link
expired_service = MagicLinkService(repo=repo, ttl=-3600)
await expired_service.create(username="expired-user")
# Create a valid link
await service.create(username="valid-user")
count = await service.cleanup_expired()
assert count == 1