mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-11 09:38:08 +00:00
84 lines
3.2 KiB
Python
84 lines
3.2 KiB
Python
#
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# Copyright (C) 2021 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import secrets
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import base64
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import binascii
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import logging
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from fastapi import Depends, HTTPException, WebSocket, status
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from fastapi.security import HTTPBasic, HTTPBasicCredentials
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from fastapi.security.utils import get_authorization_scheme_param
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from gns3server.config import Config
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from typing import Optional, Union
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log = logging.getLogger(__name__)
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security = HTTPBasic()
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def compute_authentication(credentials: Optional[HTTPBasicCredentials] = Depends(security)) -> None:
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server_settings = Config.instance().settings.Server
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username = secrets.compare_digest(credentials.username, server_settings.compute_username)
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password = secrets.compare_digest(credentials.password, server_settings.compute_password.get_secret_value())
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if not (username and password):
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Invalid compute username or password",
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headers={"WWW-Authenticate": "Basic"},
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)
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async def ws_compute_authentication(websocket: WebSocket) -> Union[None, WebSocket]:
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"""
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"""
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await websocket.accept()
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# handle basic HTTP authentication
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invalid_user_credentials_exc = 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": "Basic"},
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)
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try:
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authorization = websocket.headers.get("Authorization")
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scheme, param = get_authorization_scheme_param(authorization)
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if not authorization or scheme.lower() != "basic":
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raise invalid_user_credentials_exc
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try:
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data = base64.b64decode(param).decode("ascii")
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except (ValueError, UnicodeDecodeError, binascii.Error):
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raise invalid_user_credentials_exc
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username, separator, password = data.partition(":")
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if not separator:
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raise invalid_user_credentials_exc
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server_settings = Config.instance().settings.Server
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username = secrets.compare_digest(username, server_settings.compute_username)
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password = secrets.compare_digest(password, server_settings.compute_password.get_secret_value())
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if not (username and password):
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raise invalid_user_credentials_exc
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except HTTPException as e:
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err_msg = f"Could not authenticate while connecting to compute WebSocket: {e.detail}"
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websocket_error = {"action": "log.error", "event": {"message": err_msg}}
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await websocket.send_json(websocket_error)
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log.error(err_msg)
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return await websocket.close(code=1008)
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return websocket
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