67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
from datetime import datetime, timedelta
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from typing import Optional
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from jose import JWTError, jwt
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from passlib.context import CryptContext
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from fastapi import Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer
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from sqlalchemy.orm import Session
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import os
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import models
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from database import get_db
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SECRET_KEY = os.environ.get(
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"SECRET_KEY", "insecure-default-key-change-in-production-use-env-var"
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)
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 60 * 24 * 7 # 7 days
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/token")
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def verify_password(plain: str, hashed: str) -> bool:
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return pwd_context.verify(plain, hashed)
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def get_password_hash(password: str) -> str:
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return pwd_context.hash(password)
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def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
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to_encode = data.copy()
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expire = datetime.utcnow() + (
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expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
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)
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to_encode["exp"] = expire
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return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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def get_current_user(
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token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)
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) -> models.User:
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exc = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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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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username: str = payload.get("sub")
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if not username:
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raise exc
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except JWTError:
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raise exc
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user = db.query(models.User).filter(models.User.username == username).first()
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if not user:
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raise exc
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return user
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def get_current_admin(
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current_user: models.User = Depends(get_current_user),
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) -> models.User:
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if not current_user.is_admin:
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raise HTTPException(status_code=403, detail="Admin access required")
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return current_user
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