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AdministrationItDepartmens/backend/app/core/auth.py
2025-01-05 06:10:42 +06:00

92 lines
3.3 KiB
Python

from datetime import datetime, timedelta
from typing import Optional, Union, Any
from jose import JWTError, jwt
from passlib.context import CryptContext
from fastapi import Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer
from sqlalchemy.orm import Session
from app.database import get_db
from app.core.config import settings
from app.models.user import User
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
oauth2_scheme = OAuth2PasswordBearer(tokenUrl=f"{settings.API_V1_STR}/auth/login")
def verify_password(plain_password: str, hashed_password: str) -> bool:
"""Verify a password against a hash."""
return pwd_context.verify(plain_password, hashed_password)
def get_password_hash(password: str) -> str:
"""Generate password hash."""
return pwd_context.hash(password)
def authenticate_user(db: Session, email: str, password: str) -> Optional[User]:
"""Authenticate user by email and password."""
user = db.query(User).filter(User.email == email).first()
if not user:
return None
if not verify_password(password, user.hashed_password):
return None
return user
def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
"""Create access token."""
to_encode = data.copy()
if expires_delta:
expire = datetime.utcnow() + expires_delta
else:
expire = datetime.utcnow() + timedelta(minutes=15)
to_encode.update({"exp": expire})
encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm="HS256")
return encoded_jwt
async def get_current_user(
db: Session = Depends(get_db),
token: str = Depends(oauth2_scheme)
) -> User:
"""Get current user from token."""
credentials_exception = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Bearer"},
)
try:
payload = jwt.decode(token, settings.SECRET_KEY, algorithms=["HS256"])
email: str = payload.get("sub")
if email is None:
raise credentials_exception
except JWTError:
raise credentials_exception
user = db.query(User).filter(User.email == email).first()
if user is None:
raise credentials_exception
return user
async def get_current_user_ws(websocket: WebSocket, db: Session = Depends(get_db)) -> Optional[User]:
try:
# Получаем токен из параметров запроса
token = websocket.query_params.get("token")
if not token:
await websocket.close(code=status.WS_1008_POLICY_VIOLATION)
return None
# Проверяем токен
payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
email: str = payload.get("sub")
if email is None:
await websocket.close(code=status.WS_1008_POLICY_VIOLATION)
return None
# Получаем пользователя
user = db.query(User).filter(User.email == email).first()
if user is None:
await websocket.close(code=status.WS_1008_POLICY_VIOLATION)
return None
return user
except JWTError:
await websocket.close(code=status.WS_1008_POLICY_VIOLATION)
return None