101 lines
3.5 KiB
Python
101 lines
3.5 KiB
Python
# Copyright (c) 2025 Patrick Motsch
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# All rights reserved.
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"""
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Short-lived signed tickets for OAuth data-connection popups.
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The UI authenticates API calls with a Bearer token in localStorage, but
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``window.open(authUrl)`` cannot send that header. Cross-origin httpOnly cookies
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are unreliable in int/prod (UI on poweron-center.net, API on poweron.swiss).
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Login popups work without a session because ``/auth/login`` is public; connect
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popups hit ``/auth/connect``, which used to require ``getCurrentUser``.
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Flow: POST ``/api/connections/{id}/connect`` (Bearer-authenticated) issues a
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ticket; the popup opens ``/auth/connect?connectTicket=...`` which validates the
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ticket instead of cookies.
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"""
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import time
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from typing import Any, Dict, Tuple
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from fastapi import HTTPException, status
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from jose import JWTError, jwt as jose_jwt
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from modules.auth.jwtService import ALGORITHM, SECRET_KEY
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from modules.datamodels.datamodelUam import AuthAuthority, User, UserConnection
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from modules.interfaces.interfaceDbApp import getInterface, getRootInterface
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from modules.shared.i18nRegistry import apiRouteContext
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_msg = apiRouteContext("oauthConnectTicket")
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_CONNECT_TICKET_TTL_SEC = 600
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def issue_connect_ticket(flow: str, connection_id: str, user_id: str) -> str:
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"""Issue a short-lived JWT for starting a data-connection OAuth popup."""
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body = {
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"flow": flow,
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"connectionId": connection_id,
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"userId": str(user_id),
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"exp": int(time.time()) + _CONNECT_TICKET_TTL_SEC,
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}
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return jose_jwt.encode(body, SECRET_KEY, algorithm=ALGORITHM)
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def parse_connect_ticket(ticket: str, expected_flow: str) -> Dict[str, Any]:
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"""Validate connect ticket signature, expiry, and flow."""
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try:
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data = jose_jwt.decode(ticket, SECRET_KEY, algorithms=[ALGORITHM])
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except JWTError as e:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail=_msg("Invalid or expired connect ticket"),
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) from e
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if data.get("flow") != expected_flow:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail=_msg("Invalid connect ticket flow"),
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)
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connection_id = data.get("connectionId")
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user_id = data.get("userId")
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if not connection_id or not user_id:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail=_msg("Incomplete connect ticket"),
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)
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return data
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def resolve_connect_context(
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connect_ticket: str,
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connection_id: str,
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expected_flow: str,
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authority: AuthAuthority,
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) -> Tuple[User, UserConnection]:
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"""Validate ticket and return the user + connection for OAuth redirect."""
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state = parse_connect_ticket(connect_ticket, expected_flow)
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if state.get("connectionId") != connection_id:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail=_msg("Connection ID does not match connect ticket"),
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)
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root = getRootInterface()
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user = root.getUser(state["userId"])
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if not user:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail=_msg("User not found"),
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)
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interface = getInterface(user)
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connection = None
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for conn in interface.getUserConnections(user.id):
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if conn.id == connection_id and conn.authority == authority:
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connection = conn
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break
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if not connection:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail=_msg("Connection not found"),
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)
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return user, connection
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