88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
from datetime import datetime, timedelta
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from typing import Annotated
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from fastapi import Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer
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from jose import JWTError, jwt
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from passlib.context import CryptContext
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from sqlalchemy.orm import Session
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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.user import User, UserRole
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from app.schemas import TokenData
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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return pwd_context.verify(plain_password, hashed_password)
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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: timedelta | None = 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=settings.access_token_expire_minutes)
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)
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to_encode.update({"exp": expire})
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return jwt.encode(to_encode, settings.secret_key, algorithm=settings.algorithm)
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def get_user_by_username(db: Session, username: str) -> User | None:
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return db.query(User).filter(User.username == username).first()
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def get_user_by_email(db: Session, email: str) -> User | None:
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return db.query(User).filter(User.email == email).first()
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def authenticate_user(db: Session, username: str, password: str) -> User | None:
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user = get_user_by_username(db, username)
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if not user or not verify_password(password, user.hashed_password):
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return None
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return 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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) -> 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, settings.secret_key, algorithms=[settings.algorithm]
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)
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username: str | None = 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_by_username(db, username=token_data.username)
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if user is None:
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raise credentials_exception
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if not user.is_active:
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raise HTTPException(status_code=400, detail="Inactive user")
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return user
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async def get_current_admin(
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current_user: Annotated[User, Depends(get_current_user)],
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) -> User:
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if current_user.role != UserRole.admin:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="Admin privileges required",
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)
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return current_user
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