76 lines
2 KiB
Python
76 lines
2 KiB
Python
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from typing import Optional
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from fastapi import Depends, HTTPException, Request, status
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from passlib.context import CryptContext
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from sqlmodel import Session, select
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from .db import get_session
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from .models import User
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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def hash_password(password: str) -> str:
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"""Hash a password using bcrypt."""
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return pwd_context.hash(password)
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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"""Verify a password against a stored bcrypt hash."""
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return pwd_context.verify(plain_password, hashed_password)
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def get_current_user(
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request: Request,
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session: Session = Depends(get_session),
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) -> Optional[User]:
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"""
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Retrieve the currently logged-in user based on the session cookie.
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Returns None if no user is logged in or the user is inactive.
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"""
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user_id = request.session.get("user_id")
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if not user_id:
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return None
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user = session.get(User, user_id)
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if not user or not user.is_active:
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# Clear session if the user was deactivated.
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request.session.clear()
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return None
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return user
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def require_current_user(
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current_user: Optional[User] = Depends(get_current_user),
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) -> User:
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"""
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Require an authenticated user.
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If not authenticated, redirect to /login with a 303 status.
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"""
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if not current_user:
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raise HTTPException(
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status_code=status.HTTP_303_SEE_OTHER,
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headers={"Location": "/login"},
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)
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return current_user
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def require_admin(
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current_user: Optional[User] = Depends(get_current_user),
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) -> User:
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"""
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Require an authenticated admin user.
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Non-authenticated users are redirected to /login.
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Non-admins receive HTTP 403.
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"""
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if not current_user:
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raise HTTPException(
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status_code=status.HTTP_303_SEE_OTHER,
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headers={"Location": "/login"},
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)
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if not current_user.is_admin:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN)
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return current_user
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