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

79 lines
2.7 KiB
Python

#
# 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/>.
import re
from fastapi import Request, Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer
from gns3server import schemas
from gns3server.db.repositories.users import UsersRepository
from gns3server.db.repositories.rbac import RbacRepository
from gns3server.services import auth_service
from .database import get_repository
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/v3/users/login")
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(
request: Request,
current_user: schemas.User = Depends(get_user_from_token),
rbac_repo: RbacRepository = Depends(get_repository(RbacRepository))
) -> schemas.User:
# Super admin is always authorized
if current_user.is_superadmin:
return current_user
if not current_user.is_active:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Not an active user",
headers={"WWW-Authenticate": "Bearer"},
)
# remove the prefix (e.g. "/v3") from URL path
path = re.sub(r"^/v[0-9]", "", request.url.path)
# special case: always authorize access to the "/users/me" endpoint
if path == "/users/me":
return current_user
authorized = await rbac_repo.check_user_is_authorized(current_user.user_id, request.method, path)
if not authorized:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail=f"User is not authorized '{current_user.user_id}' on {request.method} '{path}'",
headers={"WWW-Authenticate": "Bearer"},
)
return current_user