mirror of https://github.com/jumpserver/jumpserver
451 lines
17 KiB
Python
451 lines
17 KiB
Python
# -*- coding: utf-8 -*-
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#
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import urllib.parse
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import json
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from typing import Callable
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import os
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import base64
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import ctypes
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from django.conf import settings
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from django.core.cache import cache
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from django.shortcuts import get_object_or_404
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from django.http import HttpResponse
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from django.utils import timezone
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from django.utils.translation import ugettext as _
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from rest_framework.response import Response
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from rest_framework.request import Request
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from rest_framework.viewsets import GenericViewSet
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from rest_framework.decorators import action
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from rest_framework.exceptions import PermissionDenied
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from rest_framework import serializers
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from applications.models import Application
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from authentication.signals import post_auth_failed
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from common.utils import get_logger, random_string
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from common.mixins.api import SerializerMixin
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from common.utils.common import get_file_by_arch
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from orgs.mixins.api import RootOrgViewMixin
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from common.http import is_true
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from perms.models.base import Action
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from perms.utils.application.permission import get_application_actions
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from perms.utils.asset.permission import get_asset_actions
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from ..serializers import (
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ConnectionTokenSerializer, ConnectionTokenSecretSerializer,
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)
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logger = get_logger(__name__)
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__all__ = ['UserConnectionTokenViewSet']
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class ClientProtocolMixin:
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"""
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下载客户端支持的连接文件，里面包含了 token，和 其他连接信息
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- [x] RDP
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- [ ] KoKo
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本质上，这里还是暴露出 token 来，进行使用
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"""
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request: Request
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get_serializer: Callable
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create_token: Callable
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def get_request_resource(self, serializer):
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asset = serializer.validated_data.get('asset')
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application = serializer.validated_data.get('application')
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system_user = serializer.validated_data['system_user']
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user = serializer.validated_data.get('user')
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if not user or not self.request.user.is_superuser:
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user = self.request.user
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return asset, application, system_user, user
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@staticmethod
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def parse_env_bool(env_key, env_default, true_value, false_value):
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return true_value if is_true(os.getenv(env_key, env_default)) else false_value
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def get_rdp_file_content(self, serializer):
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options = {
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'full address:s': '',
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'username:s': '',
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# 'screen mode id:i': '1',
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# 'desktopwidth:i': '1280',
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# 'desktopheight:i': '800',
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'use multimon:i': '0',
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'session bpp:i': '32',
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'audiomode:i': '0',
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'disable wallpaper:i': '0',
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'disable full window drag:i': '0',
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'disable menu anims:i': '0',
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'disable themes:i': '0',
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'alternate shell:s': '',
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'shell working directory:s': '',
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'authentication level:i': '2',
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'connect to console:i': '0',
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'disable cursor setting:i': '0',
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'allow font smoothing:i': '1',
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'allow desktop composition:i': '1',
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'redirectprinters:i': '0',
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'prompt for credentials on client:i': '0',
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'autoreconnection enabled:i': '1',
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'bookmarktype:i': '3',
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'use redirection server name:i': '0',
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'smart sizing:i': '0',
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#'drivestoredirect:s': '*',
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# 'domain:s': ''
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# 'alternate shell:s:': '||MySQLWorkbench',
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# 'remoteapplicationname:s': 'Firefox',
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# 'remoteapplicationcmdline:s': '',
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}
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asset, application, system_user, user = self.get_request_resource(serializer)
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height = self.request.query_params.get('height')
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width = self.request.query_params.get('width')
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full_screen = is_true(self.request.query_params.get('full_screen'))
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drives_redirect = is_true(self.request.query_params.get('drives_redirect'))
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token, secret = self.create_token(user, asset, application, system_user)
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# 设置磁盘挂载
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if drives_redirect:
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actions = 0
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if asset:
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actions = get_asset_actions(user, asset, system_user)
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elif application:
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actions = get_application_actions(user, application, system_user)
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if actions & Action.UPDOWNLOAD == Action.UPDOWNLOAD:
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options['drivestoredirect:s'] = '*'
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# 全屏
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options['screen mode id:i'] = '2' if full_screen else '1'
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# RDP Server 地址
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address = settings.TERMINAL_RDP_ADDR
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if not address or address == 'localhost:3389':
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address = self.request.get_host().split(':')[0] + ':3389'
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options['full address:s'] = address
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# 用户名
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options['username:s'] = '{}|{}'.format(user.username, token)
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if system_user.ad_domain:
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options['domain:s'] = system_user.ad_domain
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# 宽高
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if width and height:
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options['desktopwidth:i'] = width
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options['desktopheight:i'] = height
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else:
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options['smart sizing:i'] = '1'
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options['session bpp:i'] = os.getenv('JUMPSERVER_COLOR_DEPTH', '32')
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options['audiomode:i'] = self.parse_env_bool('JUMPSERVER_DISABLE_AUDIO', 'false', '2', '0')
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if asset:
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name = asset.hostname
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elif application:
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name = application.name
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application.get_rdp_remote_app_setting()
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app = f'||jmservisor'
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options['remoteapplicationmode:i'] = '1'
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options['alternate shell:s'] = app
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options['remoteapplicationprogram:s'] = app
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options['remoteapplicationname:s'] = name
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options['remoteapplicationcmdline:s'] = '- ' + self.get_encrypt_cmdline(application)
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else:
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name = '*'
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content = ''
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for k, v in options.items():
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content += f'{k}:{v}\n'
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return name, content
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def get_encrypt_cmdline(self, app: Application):
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parameters = app.get_rdp_remote_app_setting()['parameters']
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parameters = parameters.encode('ascii')
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lib_path = get_file_by_arch('xpack/libs', 'librailencrypt.so')
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lib = ctypes.CDLL(lib_path)
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lib.encrypt.argtypes = [ctypes.c_char_p, ctypes.c_int]
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lib.encrypt.restype = ctypes.c_char_p
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rst = lib.encrypt(parameters, len(parameters))
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rst = rst.decode('ascii')
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return rst
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@action(methods=['POST', 'GET'], detail=False, url_path='rdp/file')
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def get_rdp_file(self, request, *args, **kwargs):
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if self.request.method == 'GET':
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data = self.request.query_params
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else:
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data = self.request.data
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serializer = self.get_serializer(data=data)
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serializer.is_valid(raise_exception=True)
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name, data = self.get_rdp_file_content(serializer)
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response = HttpResponse(data, content_type='application/octet-stream')
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filename = "{}-{}-jumpserver.rdp".format(self.request.user.username, name)
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filename = urllib.parse.quote(filename)
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response['Content-Disposition'] = 'attachment; filename*=UTF-8\'\'%s' % filename
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return response
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def get_valid_serializer(self):
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if self.request.method == 'GET':
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data = self.request.query_params
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else:
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data = self.request.data
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serializer = self.get_serializer(data=data)
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serializer.is_valid(raise_exception=True)
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return serializer
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def get_client_protocol_data(self, serializer):
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asset, application, system_user, user = self.get_request_resource(serializer)
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protocol = system_user.protocol
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username = user.username
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if protocol == 'rdp':
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name, config = self.get_rdp_file_content(serializer)
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elif protocol == 'ssh':
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# Todo:
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name = ''
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config = 'ssh://system_user@asset@user@jumpserver-ssh'
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else:
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raise ValueError('Protocol not support: {}'.format(protocol))
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filename = "{}-{}-jumpserver".format(username, name)
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data = {
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"filename": filename,
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"protocol": system_user.protocol,
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"username": username,
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"config": config
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}
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return data
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@action(methods=['POST', 'GET'], detail=False, url_path='client-url')
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def get_client_protocol_url(self, request, *args, **kwargs):
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serializer = self.get_valid_serializer()
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try:
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protocol_data = self.get_client_protocol_data(serializer)
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except ValueError as e:
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return Response({'error': str(e)}, status=401)
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protocol_data = json.dumps(protocol_data).encode()
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protocol_data = base64.b64encode(protocol_data).decode()
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data = {
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'url': 'jms://{}'.format(protocol_data),
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}
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return Response(data=data)
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class SecretDetailMixin:
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valid_token: Callable
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request: Request
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get_serializer: Callable
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@staticmethod
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def _get_application_secret_detail(application):
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gateway = None
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remote_app = None
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asset = None
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if application.category_remote_app:
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remote_app = application.get_rdp_remote_app_setting()
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asset = application.get_remote_app_asset()
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domain = asset.domain
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else:
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domain = application.domain
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if domain and domain.has_gateway():
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gateway = domain.random_gateway()
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return {
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'asset': asset,
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'application': application,
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'gateway': gateway,
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'domain': domain,
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'remote_app': remote_app,
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}
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@staticmethod
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def _get_asset_secret_detail(asset):
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gateway = None
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if asset and asset.domain and asset.domain.has_gateway():
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gateway = asset.domain.random_gateway()
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return {
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'asset': asset,
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'application': None,
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'domain': asset.domain,
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'gateway': gateway,
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'remote_app': None,
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}
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@action(methods=['POST'], detail=False, url_path='secret-info/detail')
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def get_secret_detail(self, request, *args, **kwargs):
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perm_required = 'authentication.view_connectiontokensecret'
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# 非常重要的 api，再逻辑层再判断一下，双重保险
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if not request.user.has_perm(perm_required):
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raise PermissionDenied('Not allow to view secret')
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token = request.data.get('token', '')
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try:
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value, user, system_user, asset, app, expired_at, actions = self.valid_token(token)
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except serializers.ValidationError as e:
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post_auth_failed.send(
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sender=self.__class__, username='', request=self.request,
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reason=_('Invalid token')
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)
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raise e
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data = dict(
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id=token, secret=value.get('secret', ''),
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user=user, system_user=system_user,
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expired_at=expired_at, actions=actions
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)
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cmd_filter_kwargs = {
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'system_user_id': system_user.id,
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'user_id': user.id,
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}
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if asset:
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asset_detail = self._get_asset_secret_detail(asset)
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system_user.load_asset_more_auth(asset.id, user.username, user.id)
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data['type'] = 'asset'
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data.update(asset_detail)
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cmd_filter_kwargs['asset_id'] = asset.id
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else:
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app_detail = self._get_application_secret_detail(app)
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system_user.load_app_more_auth(app.id, user.username, user.id)
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data['type'] = 'application'
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data.update(app_detail)
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cmd_filter_kwargs['application_id'] = app.id
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from assets.models import CommandFilterRule
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cmd_filter_rules = CommandFilterRule.get_queryset(**cmd_filter_kwargs)
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data['cmd_filter_rules'] = cmd_filter_rules
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serializer = self.get_serializer(data)
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return Response(data=serializer.data, status=200)
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class UserConnectionTokenViewSet(
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RootOrgViewMixin, SerializerMixin, ClientProtocolMixin,
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SecretDetailMixin, GenericViewSet
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):
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serializer_classes = {
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'default': ConnectionTokenSerializer,
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'get_secret_detail': ConnectionTokenSecretSerializer,
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}
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CACHE_KEY_PREFIX = 'CONNECTION_TOKEN_{}'
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rbac_perms = {
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'GET': 'authentication.view_connectiontoken',
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'create': 'authentication.add_connectiontoken',
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'get_secret_detail': 'authentication.view_connectiontokensecret',
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'get_rdp_file': 'authentication.add_connectiontoken',
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'get_client_protocol_url': 'authentication.add_connectiontoken',
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}
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@staticmethod
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def check_resource_permission(user, asset, application, system_user):
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from perms.utils.asset import has_asset_system_permission
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from perms.utils.application import has_application_system_permission
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if asset and not has_asset_system_permission(user, asset, system_user):
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error = f'User not has this asset and system user permission: ' \
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f'user={user.id} system_user={system_user.id} asset={asset.id}'
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raise PermissionDenied(error)
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if application and not has_application_system_permission(user, application, system_user):
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error = f'User not has this application and system user permission: ' \
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f'user={user.id} system_user={system_user.id} application={application.id}'
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raise PermissionDenied(error)
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return True
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def create_token(self, user, asset, application, system_user, ttl=5 * 60):
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# 再次强调一下权限
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perm_required = 'authentication.add_superconnectiontoken'
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if user != self.request.user and not self.request.user.has_perm(perm_required):
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raise PermissionDenied('Only can create user token')
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self.check_resource_permission(user, asset, application, system_user)
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token = random_string(36)
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secret = random_string(16)
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value = {
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'id': token,
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'secret': secret,
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'user': str(user.id),
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'username': user.username,
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'system_user': str(system_user.id),
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'system_user_name': system_user.name,
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'created_by': str(self.request.user),
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'date_created': str(timezone.now())
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}
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if asset:
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value.update({
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'type': 'asset',
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'asset': str(asset.id),
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'hostname': asset.hostname,
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})
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elif application:
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value.update({
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'type': 'application',
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'application': application.id,
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'application_name': str(application)
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})
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key = self.CACHE_KEY_PREFIX.format(token)
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cache.set(key, value, timeout=ttl)
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return token, secret
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def create(self, request, *args, **kwargs):
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serializer = self.get_serializer(data=request.data)
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serializer.is_valid(raise_exception=True)
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asset, application, system_user, user = self.get_request_resource(serializer)
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token, secret = self.create_token(user, asset, application, system_user)
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tp = 'app' if application else 'asset'
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data = {
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"id": token, 'secret': secret,
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'type': tp, 'protocol': system_user.protocol
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}
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return Response(data, status=201)
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def valid_token(self, token):
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from users.models import User
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from assets.models import SystemUser, Asset
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from applications.models import Application
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from perms.utils.asset.permission import validate_permission as asset_validate_permission
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from perms.utils.application.permission import validate_permission as app_validate_permission
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key = self.CACHE_KEY_PREFIX.format(token)
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value = cache.get(key, None)
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if not value:
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raise serializers.ValidationError('Token not found')
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user = get_object_or_404(User, id=value.get('user'))
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if not user.is_valid:
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raise serializers.ValidationError("User not valid, disabled or expired")
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system_user = get_object_or_404(SystemUser, id=value.get('system_user'))
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asset = None
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app = None
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if value.get('type') == 'asset':
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asset = get_object_or_404(Asset, id=value.get('asset'))
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if not asset.is_active:
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raise serializers.ValidationError("Asset disabled")
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has_perm, actions, expired_at = asset_validate_permission(user, asset, system_user)
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else:
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app = get_object_or_404(Application, id=value.get('application'))
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has_perm, actions, expired_at = app_validate_permission(user, app, system_user)
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if not has_perm:
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raise serializers.ValidationError('Permission expired or invalid')
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return value, user, system_user, asset, app, expired_at, actions
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def get(self, request):
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token = request.query_params.get('token')
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key = self.CACHE_KEY_PREFIX.format(token)
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value = cache.get(key, None)
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if not value:
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return Response('', status=404)
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return Response(value)
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