78 lines
2.7 KiB
Python
78 lines
2.7 KiB
Python
import secrets
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from datetime import datetime, timedelta
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import bcrypt
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from fastapi import Depends, HTTPException, Request, status
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from sqlalchemy.orm import Session as DbSession
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from app.config import settings
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from app.database import get_db
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from app.models import Session, User
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SESSION_COOKIE = "session_token"
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def hash_password(password: str) -> str:
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return bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()
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def verify_password(plain: str, hashed: str) -> bool:
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return bcrypt.checkpw(plain.encode(), hashed.encode())
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def create_session_token() -> str:
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return secrets.token_urlsafe(32)
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def create_user_session(db: DbSession, user: User) -> Session:
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token = create_session_token()
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expires_at = datetime.utcnow() + timedelta(hours=settings.session_lifetime_hours)
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session = Session(user_id=user.id, token=token, expires_at=expires_at)
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db.add(session)
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db.commit()
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db.refresh(session)
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return session
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def get_session_by_token(db: DbSession, token: str) -> Session | None:
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session = db.query(Session).filter(Session.token == token, Session.is_active.is_(True)).first()
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if not session:
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return None
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if session.expires_at < datetime.utcnow():
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session.is_active = False
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db.commit()
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return None
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return session
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def get_current_user(request: Request, db: DbSession = Depends(get_db)) -> User:
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token = request.cookies.get(SESSION_COOKIE)
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if not token:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Not authenticated")
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session = get_session_by_token(db, token)
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if not session:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Session expired")
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user = db.query(User).filter(User.id == session.user_id).first()
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if not user:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User not found")
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return user
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def get_current_user_optional(request: Request, db: DbSession = Depends(get_db)) -> User | None:
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token = request.cookies.get(SESSION_COOKIE)
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if not token:
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return None
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session = get_session_by_token(db, token)
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if not session:
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return None
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return db.query(User).filter(User.id == session.user_id).first()
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def verify_api_key(request: Request) -> None:
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auth = request.headers.get("Authorization", "")
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if not auth.startswith("Bearer "):
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid API key")
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key = auth.removeprefix("Bearer ").strip()
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if not secrets.compare_digest(key, settings.api_key):
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Invalid API key")
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