LeoVasanko
68dccc1378
Allows Paskia to authenticate the user to a client site. - User friendly client registration flow on the admin app - Redirect-based authentication flow (per spec) - Backchannel logout both ways to keep sessions synchronized - Groups integrated with Paskia's permission system - Adds email, preferred username and telephone fields on user profile - All new user basic info layout to show the new information, better looks - API and DB structures redesigned - Various unrelated fixes to theming and layout
114 lines
2.9 KiB
Python
114 lines
2.9 KiB
Python
"""
|
|
Authorization code management for OIDC and cookie exchange flows.
|
|
|
|
Codes are short-lived (60 seconds) and stored in-memory only.
|
|
Two separate stores maintain full isolation between OIDC and cookie flows.
|
|
"""
|
|
|
|
from __future__ import annotations
|
|
|
|
import asyncio
|
|
import logging
|
|
import secrets
|
|
from datetime import UTC, datetime, timedelta
|
|
|
|
import msgspec
|
|
|
|
_logger = logging.getLogger(__name__)
|
|
|
|
# Auth codes expire after this duration
|
|
AUTH_CODE_LIFETIME = timedelta(seconds=60)
|
|
|
|
|
|
class OIDCCode(msgspec.Struct):
|
|
"""An OIDC authorization code pending token exchange.
|
|
|
|
PKCE uses S256 only when provided (verified at token exchange).
|
|
"""
|
|
|
|
session_key: str
|
|
created: datetime
|
|
redirect_uri: str
|
|
scope: str
|
|
nonce: str | None = None
|
|
code_challenge: str | None = None
|
|
|
|
|
|
class CookieCode(msgspec.Struct):
|
|
"""A cookie exchange code for setting session cookie after WebSocket auth."""
|
|
|
|
session_key: str
|
|
created: datetime
|
|
|
|
|
|
# Separate stores for each code type
|
|
oidc_codes: dict[str, OIDCCode] = {}
|
|
cookie_codes: dict[str, CookieCode] = {}
|
|
|
|
# Background cleanup task
|
|
_cleanup_task: asyncio.Task | None = None
|
|
|
|
|
|
async def start():
|
|
"""Start the cleanup background task."""
|
|
global _cleanup_task
|
|
if _cleanup_task is None:
|
|
_cleanup_task = asyncio.create_task(_cleanup_loop())
|
|
|
|
|
|
async def stop():
|
|
"""Stop the cleanup background task."""
|
|
global _cleanup_task
|
|
if _cleanup_task:
|
|
_cleanup_task.cancel()
|
|
try:
|
|
await _cleanup_task
|
|
except asyncio.CancelledError:
|
|
pass
|
|
_cleanup_task = None
|
|
|
|
|
|
async def _cleanup_loop():
|
|
while True:
|
|
try:
|
|
await asyncio.sleep(30) # Check every 30 seconds
|
|
_cleanup_expired()
|
|
except asyncio.CancelledError:
|
|
break
|
|
except Exception:
|
|
_logger.exception("Error in auth code cleanup loop")
|
|
|
|
|
|
def _cleanup_expired():
|
|
oldest = datetime.now(UTC) - AUTH_CODE_LIFETIME
|
|
for code, auth_code in list(oidc_codes.items()):
|
|
if auth_code.created < oldest:
|
|
del oidc_codes[code]
|
|
for code, auth_code in list(cookie_codes.items()):
|
|
if auth_code.created < oldest:
|
|
del cookie_codes[code]
|
|
|
|
|
|
def store_oidc(code: OIDCCode) -> str:
|
|
"""Store an OIDC authorization code and return the code string."""
|
|
token = secrets.token_urlsafe(12)
|
|
oidc_codes[token] = code
|
|
return token
|
|
|
|
|
|
def consume_oidc(token: str) -> OIDCCode | None:
|
|
"""Consume an OIDC code, returning it if valid. Atomic removal."""
|
|
return oidc_codes.pop(token, None)
|
|
|
|
|
|
def store_cookie(code: CookieCode) -> str:
|
|
"""Store a cookie exchange code and return the code string."""
|
|
token = secrets.token_urlsafe(12)
|
|
cookie_codes[token] = code
|
|
return token
|
|
|
|
|
|
def consume_cookie(token: str) -> CookieCode | None:
|
|
"""Consume a cookie exchange code, returning it if valid. Atomic removal."""
|
|
return cookie_codes.pop(token, None)
|