gns3-server/gns3server/api/routes/controller/dependencies/authentication.py

#
# Copyright (C) 2020 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


from fastapi import Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer

from gns3server import schemas
from gns3server.db.repositories.users import UsersRepository
from gns3server.services import auth_service

from .database import get_repository

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/v3/users/login")  # FIXME: URL prefix


async def get_user_from_token(
        token: str = Depends(oauth2_scheme),
        user_repo: UsersRepository = Depends(get_repository(UsersRepository))
) -> schemas.User:

    username = auth_service.get_username_from_token(token)
    user = await user_repo.get_user_by_username(username)
    if user is None:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Could not validate credentials",
            headers={"WWW-Authenticate": "Bearer"}
        )
    return user


async def get_current_active_user(current_user: schemas.User = Depends(get_user_from_token)) -> schemas.User:

    if not current_user.is_active:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Not an active user",
            headers={"WWW-Authenticate": "Bearer"}
        )
    return current_user