100 lines
3.0 KiB
Python
100 lines
3.0 KiB
Python
from fastapi import status, HTTPException, Depends
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from fastapi.security import OAuth2PasswordBearer
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from sqlalchemy.orm import Session
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from jose import JWTError, jwt
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from typing import Annotated, Union
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from datetime import timedelta
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from passlib.context import CryptContext
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from ...db import models
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from . import schemas
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from ...dependencies import get_db
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from ...config import jwt_config
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
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def verify_password(plain_password, hashed_password):
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return pwd_context.verify(plain_password, hashed_password)
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def get_password_hash(password):
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return pwd_context.hash(password)
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def get_user_by_id(db: Session, user_id: int):
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return db.query(models.User).filter(models.User.id == user_id).first()
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def get_user_by_username(db: Session, username: int):
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return db.query(models.User).filter(models.User.username == username).first()
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def authenticate_user(db: Session, username: str, password: str):
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user = get_user_by_username(db, username)
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if not user:
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return False
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if not verify_password(password, user.hashed_password):
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return False
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return user
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def create_access_token(data: dict, expires_delta: Union[timedelta, None] = None):
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.now(timezone.utc) + expires_delta
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else:
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expire = datetime.now(timezone.utc) + timedelta(minutes=15)
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to_encode.update({"exp": expire})
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encoded_jwt = jwt.encode(
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to_encode, jwt_config.SECRET_KEY, algorithm=jwt_config.ALGORITHM
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)
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return encoded_jwt
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def create_user(
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db: Session, username: str, plain_password: str, name: Union[str, None] = None
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) -> schemas.User:
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user = models.User(
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username=username,
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name=name,
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hashed_password=get_password_hash(plain_password),
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)
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db.add(user)
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db.commit()
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return schemas.User(user)
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async def get_current_user(
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token: Annotated[str, Depends(oauth2_scheme)],
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db: Annotated[Session, Depends(get_db)],
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) -> schemas.User:
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credentials_exception = 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(
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token, jwt_config.SECRET_KEY, algorithms=[jwt_config.ALGORITHM]
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)
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username: str = payload.get("sub")
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if username is None:
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raise credentials_exception
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token_data = TokenData(username=username)
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except JWTError:
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raise credentials_exception
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user = get_user(fake_users_db, username=token_data.username)
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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_active_user(
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current_user: Annotated[schemas.User, Depends(get_current_user)],
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):
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if current_user.disabled:
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raise HTTPException(status_code=400, detail="Inactive user")
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return current_user
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