ruslan
c8c77048c7
main.py was ~3000 lines with models, routes, Docker ops, maintenance all mixed. Split into 7 focused modules: - config.py: env vars and constants - database.py: SQLAlchemy engine, SessionLocal, Base, get_db - models.py: ORM models and enums - utils.py: logging, formatting, icon handling, misc helpers - auth.py: password hashing, cookies, CSRF, user dependency - runtime.py: all Docker operations, pool management, session lifecycle - maintenance.py: cleanup loop, schema bootstrap, startup logic - main.py: FastAPI app, middleware, all route handlers only
103 lines
3.0 KiB
Python
103 lines
3.0 KiB
Python
import secrets
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from typing import Optional
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from fastapi import Depends, HTTPException, Request, status
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from fastapi.responses import RedirectResponse
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from itsdangerous import BadSignature, URLSafeTimedSerializer
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from passlib.context import CryptContext
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from sqlalchemy.orm import Session
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from config import COOKIE_MAX_AGE, COOKIE_NAME, CSRF_COOKIE
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from database import get_db
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from models import User, UserServiceAccess
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from utils import now_utc
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from sqlalchemy import select
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import os
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_SIGNING_KEY = os.getenv("SIGNING_KEY", secrets.token_urlsafe(32))
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serializer = URLSafeTimedSerializer(_SIGNING_KEY, salt="portal-auth")
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pwd_context = CryptContext(schemes=["argon2"], deprecated="auto")
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def hash_password(password: str) -> str:
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return pwd_context.hash(password)
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def verify_password(password: str, password_hash: str) -> bool:
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return pwd_context.verify(password, password_hash)
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def user_is_valid(user: User) -> bool:
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return bool(user.active and user.expires_at > now_utc())
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def issue_auth_cookie(response: RedirectResponse, user: User) -> None:
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token = serializer.dumps({"user_id": user.id})
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response.set_cookie(
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key=COOKIE_NAME,
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value=token,
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httponly=True,
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secure=True,
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samesite="strict",
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max_age=COOKIE_MAX_AGE,
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path="/",
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)
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def issue_csrf_cookie(response: RedirectResponse) -> str:
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token = secrets.token_urlsafe(24)
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response.set_cookie(
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key=CSRF_COOKIE,
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value=token,
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httponly=False,
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secure=True,
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samesite="lax",
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max_age=COOKIE_MAX_AGE,
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path="/",
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)
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return token
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def get_current_user(request: Request, db: Session = Depends(get_db)) -> Optional[User]:
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raw = request.cookies.get(COOKIE_NAME)
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if not raw:
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return None
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try:
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payload = serializer.loads(raw, max_age=COOKIE_MAX_AGE)
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except BadSignature:
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return None
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user = db.get(User, int(payload["user_id"]))
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if not user or not user_is_valid(user):
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return None
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return user
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def require_user(user: Optional[User] = Depends(get_current_user)) -> User:
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if not user:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Unauthorized")
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return user
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def require_admin(user: User = Depends(require_user)) -> User:
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if not user.is_admin:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Admin only")
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return user
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def validate_csrf(request: Request) -> None:
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cookie = request.cookies.get(CSRF_COOKIE)
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form_val = request.headers.get("X-CSRF-Token")
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if request.headers.get("content-type", "").startswith("application/x-www-form-urlencoded"):
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return
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if not cookie or not form_val or cookie != form_val:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="CSRF failed")
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def has_access(db: Session, user_id: int, service_id: int) -> bool:
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q = select(UserServiceAccess).where(
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UserServiceAccess.user_id == user_id,
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UserServiceAccess.service_id == service_id,
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)
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return db.scalar(q) is not None
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