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Ebbe BaßandClaude Sonnet 5.5 73505ac717 feat: add audit, throttle and session foundations
Audit entries written only inside the caller's transaction, database
throttle counters that refuse to run inside a transaction that could roll
back, and a database session store with the user key in its own column,
end_sessions and idle and absolute limits. Ticket 1.3.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sk72AxLwQnYttF6VFSxQLt
2026-10-15 15:43:43 +02:00

53 lines
1.6 KiB
Python

"""Session user and the only way to end sessions (AD-3, AD-6)."""
from __future__ import annotations
import time
from dataclasses import dataclass
from .models import UserSession
from .session_store import CREATED_AT, USER_KEY, USER_SAM
@dataclass(frozen=True)
class SessionUser:
key: str # lower-case, used for every database key
sam: str # exact sAMAccountName from AD
@classmethod
def from_sam(cls, sam: str) -> SessionUser:
return cls(key=sam.lower(), sam=sam)
def start_session(request, sam: str) -> SessionUser:
"""Sign a user in on this request; the session key is rotated and old data dropped."""
user = SessionUser.from_sam(sam)
request.session.flush()
request.session[USER_KEY] = user.key
request.session[USER_SAM] = user.sam
request.session[CREATED_AT] = time.time()
return user
def current_user(request) -> SessionUser | None:
session = getattr(request, "session", None)
if session is None:
return None
key = session.get(USER_KEY)
sam = session.get(USER_SAM)
if not key or not sam:
return None
return SessionUser(key=key, sam=sam)
def end_sessions(user: SessionUser | str, except_session_key: str | None = None) -> int:
"""Delete every session of one user, optionally keeping one. Returns how many were ended."""
key = (user.key if isinstance(user, SessionUser) else str(user)).lower()
if not key:
return 0
qs = UserSession.objects.filter(username=key)
if except_session_key:
qs = qs.exclude(session_key=except_session_key)
deleted, _ = qs.delete()
return deleted