IT Dog
73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
from fastapi import Depends, HTTPException, status, Query
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from sqlalchemy.orm import Session
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from jose import JWTError, jwt
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from database import get_db, SECRET_KEY, ALGORITHM
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from models import User
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security = HTTPBearer()
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async def get_current_user(
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credentials: HTTPAuthorizationCredentials = Depends(security),
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db: Session = Depends(get_db)
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) -> User:
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"""Validate JWT token and return current user."""
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token = credentials.credentials
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Invalid or expired token",
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headers={"WWW-Authenticate": "Bearer"},
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)
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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user_id_str = payload.get("sub")
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if user_id_str is None:
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raise credentials_exception
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try:
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user_id = int(user_id_str)
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except (ValueError, TypeError):
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raise credentials_exception
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except JWTError:
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raise credentials_exception
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user = db.query(User).filter(User.id == user_id, User.is_active == True).first()
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if user is None:
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raise credentials_exception
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return user
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async def get_current_admin(current_user: User = Depends(get_current_user)) -> User:
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"""Ensure current user is an admin."""
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if current_user.role != "admin":
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="Admin access required"
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)
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return current_user
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async def get_current_user_from_query(
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token: str = Query(...),
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db: Session = Depends(get_db)
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) -> User:
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"""Validate JWT token from query parameter and return current user."""
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Invalid or expired token",
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headers={"WWW-Authenticate": "Bearer"},
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)
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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user_id_str = payload.get("sub")
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if user_id_str is None:
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raise credentials_exception
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user_id = int(user_id_str)
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except (JWTError, ValueError, TypeError):
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raise credentials_exception
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user = db.query(User).filter(User.id == user_id, User.is_active == True).first()
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if user is None:
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raise credentials_exception
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return user
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