rommapp_romm/backend/handler/auth/hybrid_auth.py
nendo ea5b7546aa refactor: address PR #3114 review feedback
- Use atomic getdel for pairing code exchange
- Add cascade="all, delete-orphan" to User.client_tokens
- Move generate/hash_client_token into AuthHandler as static methods
- Extract endpoint helpers to utils/client_tokens.py
2026-03-11 10:56:35 +09:00

97 lines
3.7 KiB
Python

from datetime import datetime, timezone
from fastapi.security.http import HTTPBasic
from starlette.authentication import AuthCredentials, AuthenticationBackend
from starlette.requests import HTTPConnection
from config import KIOSK_MODE
from handler.auth import auth_handler, oauth_handler
from handler.database import db_client_token_handler, db_user_handler
from models.user import User
from utils.datetime import to_utc
from .constants import READ_SCOPES
class HybridAuthBackend(AuthenticationBackend):
async def authenticate(
self, conn: HTTPConnection
) -> tuple[AuthCredentials, User] | None:
# Check if session key already stored in cache
user = await auth_handler.get_current_active_user_from_session(conn)
if user:
user.set_last_active()
return (AuthCredentials(user.oauth_scopes), user)
# Check if Authorization header exists
if "Authorization" in conn.headers:
scheme, token = conn.headers["Authorization"].split()
# Check if basic auth header is valid
if scheme.lower() == "basic":
credentials = await HTTPBasic().__call__(conn) # type: ignore[arg-type]
if not credentials:
return None
user = auth_handler.authenticate_user(
credentials.username, credentials.password
)
if user is None or not user.enabled:
return None
user.set_last_active()
return (AuthCredentials(user.oauth_scopes), user)
# Check if bearer auth header is valid
if scheme.lower() == "bearer":
# Client API tokens use the rmm_ prefix
if token.startswith("rmm_"):
hashed = auth_handler.hash_client_token(token)
client_token = db_client_token_handler.get_token_by_hash(hashed)
if client_token is None:
return None
if client_token.expires_at and to_utc(
client_token.expires_at
) < datetime.now(timezone.utc):
return None
user = db_user_handler.get_user(client_token.user_id)
if user is None or not user.enabled:
return None
token_scopes = set(client_token.scopes.split())
effective_scopes = list(token_scopes & set(user.oauth_scopes))
db_client_token_handler.update_last_used(client_token.id)
user.set_last_active()
conn.state.client_token_id = client_token.id
return (AuthCredentials(effective_scopes), user)
# OAuth JWT bearer tokens
(
user,
claims,
) = await oauth_handler.get_current_active_user_from_bearer_token(token)
if user is None or claims is None:
return None
# Only access tokens can request resources
if claims.get("type") != "access":
return None
# Only grant access to resources with overlapping scopes
token_scopes = set(list(claims.get("scopes", "").split(" ")))
overlapping_scopes = list(token_scopes & set(user.oauth_scopes))
user.set_last_active()
return (AuthCredentials(overlapping_scopes), user)
# Check if we're in KIOSK_MODE
if KIOSK_MODE:
user = User.kiosk_mode_user()
return (AuthCredentials(READ_SCOPES), user)
return None