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mirror of https://github.com/GNS3/gns3-server synced 2024-12-11 09:38:08 +00:00
gns3-server/gns3server/api/routes/compute/dependencies/authentication.py

84 lines
3.2 KiB
Python

#
# Copyright (C) 2021 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 secrets
import base64
import binascii
import logging
from fastapi import Depends, HTTPException, WebSocket, status
from fastapi.security import HTTPBasic, HTTPBasicCredentials
from fastapi.security.utils import get_authorization_scheme_param
from gns3server.config import Config
from typing import Optional, Union
log = logging.getLogger(__name__)
security = HTTPBasic()
def compute_authentication(credentials: Optional[HTTPBasicCredentials] = Depends(security)) -> None:
server_settings = Config.instance().settings.Server
username = secrets.compare_digest(credentials.username, server_settings.compute_username)
password = secrets.compare_digest(credentials.password, server_settings.compute_password.get_secret_value())
if not (username and password):
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Invalid compute username or password",
headers={"WWW-Authenticate": "Basic"},
)
async def ws_compute_authentication(websocket: WebSocket) -> Union[None, WebSocket]:
"""
"""
await websocket.accept()
# handle basic HTTP authentication
invalid_user_credentials_exc = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Basic"},
)
try:
authorization = websocket.headers.get("Authorization")
scheme, param = get_authorization_scheme_param(authorization)
if not authorization or scheme.lower() != "basic":
raise invalid_user_credentials_exc
try:
data = base64.b64decode(param).decode("ascii")
except (ValueError, UnicodeDecodeError, binascii.Error):
raise invalid_user_credentials_exc
username, separator, password = data.partition(":")
if not separator:
raise invalid_user_credentials_exc
server_settings = Config.instance().settings.Server
username = secrets.compare_digest(username, server_settings.compute_username)
password = secrets.compare_digest(password, server_settings.compute_password.get_secret_value())
if not (username and password):
raise invalid_user_credentials_exc
except HTTPException as e:
err_msg = f"Could not authenticate while connecting to compute WebSocket: {e.detail}"
websocket_error = {"action": "log.error", "event": {"message": err_msg}}
await websocket.send_json(websocket_error)
log.error(err_msg)
return await websocket.close(code=1008)
return websocket