# -*- coding: utf-8 -*-
#
from django.conf import settings
from django.core.cache import cache
from django.shortcuts import get_object_or_404
from django.http import HttpResponse
from rest_framework.response import Response
from rest_framework.viewsets import GenericViewSet
from rest_framework.decorators import action
from rest_framework.exceptions import PermissionDenied
from common.utils import get_logger, random_string
from common.drf.api import SerializerMixin2
from common.permissions import IsSuperUserOrAppUser, IsValidUser, IsSuperUser
from orgs.mixins.api import RootOrgViewMixin
from ..serializers import (
ConnectionTokenSerializer, ConnectionTokenSecretSerializer,
RDPFileSerializer
)
logger = get_logger(__name__)
__all__ = ['UserConnectionTokenViewSet']
class UserConnectionTokenViewSet(RootOrgViewMixin, SerializerMixin2, GenericViewSet):
permission_classes = (IsSuperUserOrAppUser,)
serializer_classes = {
'default': ConnectionTokenSerializer,
'get_secret_detail': ConnectionTokenSecretSerializer,
'get_rdp_file': RDPFileSerializer
}
CACHE_KEY_PREFIX = 'CONNECTION_TOKEN_{}'
@staticmethod
def check_resource_permission(user, asset, application, system_user):
from perms.utils.asset import has_asset_system_permission
from perms.utils.application import has_application_system_permission
if asset and not has_asset_system_permission(user, asset, system_user):
error = f'User not has this asset and system user permission: ' \
f'user={user.id} system_user={system_user.id} asset={asset.id}'
raise PermissionDenied(error)
if application and not has_application_system_permission(user, application, system_user):
error = f'User not has this application and system user permission: ' \
f'user={user.id} system_user={system_user.id} application={application.id}'
raise PermissionDenied(error)
return True
def create_token(self, user, asset, application, system_user):
if not settings.CONNECTION_TOKEN_ENABLED:
raise PermissionDenied('Connection token disabled')
if not user:
user = self.request.user
if not self.request.user.is_superuser and user != self.request.user:
raise PermissionDenied('Only super user can create user token')
self.check_resource_permission(user, asset, application, system_user)
token = random_string(36)
value = {
'user': str(user.id),
'username': user.username,
'system_user': str(system_user.id),
'system_user_name': system_user.name
}
if asset:
value.update({
'type': 'asset',
'asset': str(asset.id),
'hostname': asset.hostname,
})
elif application:
value.update({
'type': 'application',
'application': application.id,
'application_name': str(application)
})
key = self.CACHE_KEY_PREFIX.format(token)
cache.set(key, value, timeout=20)
return token
def create(self, request, *args, **kwargs):
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
asset = serializer.validated_data.get('asset')
application = serializer.validated_data.get('application')
system_user = serializer.validated_data['system_user']
user = serializer.validated_data.get('user')
token = self.create_token(user, asset, application, system_user)
return Response({"token": token}, status=201)
@action(methods=['POST', 'GET'], detail=False, url_path='rdp/file')
def get_rdp_file(self, request, *args, **kwargs):
options = {
'full address:s': '',
'username:s': '',
'screen mode id:i': '0',
'desktopwidth:i': '1280',
'desktopheight:i': '800',
'use multimon:i': '1',
'session bpp:i': '24',
'audiomode:i': '0',
'disable wallpaper:i': '0',
'disable full window drag:i': '0',
'disable menu anims:i': '0',
'disable themes:i': '0',
'alternate shell:s': '',
'shell working directory:s': '',
'authentication level:i': '2',
'connect to console:i': '0',
'disable cursor setting:i': '0',
'allow font smoothing:i': '1',
'allow desktop composition:i': '1',
'redirectprinters:i': '0',
'prompt for credentials on client:i': '0',
'autoreconnection enabled:i': '1',
'bookmarktype:i': '3',
'use redirection server name:i': '0',
# 'alternate shell:s:': '||MySQLWorkbench',
# 'remoteapplicationname:s': 'Firefox',
# 'remoteapplicationcmdline:s': '',
}
if self.request.method == 'GET':
data = self.request.query_params
else:
data = request.data
serializer = self.get_serializer(data=data)
serializer.is_valid(raise_exception=True)
asset = serializer.validated_data.get('asset')
application = serializer.validated_data.get('application')
system_user = serializer.validated_data['system_user']
user = serializer.validated_data.get('user')
height = serializer.validated_data.get('height')
width = serializer.validated_data.get('width')
token = self.create_token(user, asset, application, system_user)
# Todo: 上线后地址是 JumpServerAddr:3389
address = self.request.query_params.get('address') or '1.1.1.1'
options['full address:s'] = address
options['username:s'] = '{}@{}'.format(user.username, token)
options['desktopwidth:i'] = width
options['desktopheight:i'] = height
data = ''
for k, v in options.items():
data += f'{k}:{v}\n'
response = HttpResponse(data, content_type='text/plain')
filename = "{}-{}-jumpserver.rdp".format(user.username, asset.hostname)
response['Content-Disposition'] = 'attachment; filename={}'.format(filename)
return response
@staticmethod
def _get_application_secret_detail(value):
from applications.models import Application
from perms.models import Action
application = get_object_or_404(Application, id=value.get('application'))
gateway = None
if not application.category_remote_app:
actions = Action.NONE
remote_app = {}
asset = None
domain = application.domain
else:
remote_app = application.get_rdp_remote_app_setting()
actions = Action.CONNECT
asset = application.get_remote_app_asset()
domain = asset.domain
if domain and domain.has_gateway():
gateway = domain.random_gateway()
return {
'asset': asset,
'application': application,
'gateway': gateway,
'remote_app': remote_app,
'actions': actions
}
@staticmethod
def _get_asset_secret_detail(value, user, system_user):
from assets.models import Asset
from perms.utils.asset import get_asset_system_users_id_with_actions_by_user
asset = get_object_or_404(Asset, id=value.get('asset'))
systemuserid_actions_mapper = get_asset_system_users_id_with_actions_by_user(user, asset)
actions = systemuserid_actions_mapper.get(system_user.id, [])
gateway = None
if asset and asset.domain and asset.domain.has_gateway():
gateway = asset.domain.random_gateway()
return {
'asset': asset,
'application': None,
'gateway': gateway,
'remote_app': None,
'actions': actions,
}
@action(methods=['POST'], detail=False, permission_classes=[IsSuperUserOrAppUser], url_path='secret-info/detail')
def get_secret_detail(self, request, *args, **kwargs):
from users.models import User
from assets.models import SystemUser
token = request.data.get('token', '')
key = self.CACHE_KEY_PREFIX.format(token)
value = cache.get(key, None)
if not value:
return Response(status=404)
user = get_object_or_404(User, id=value.get('user'))
system_user = get_object_or_404(SystemUser, id=value.get('system_user'))
data = dict(user=user, system_user=system_user)
if value.get('type') == 'asset':
asset_detail = self._get_asset_secret_detail(value, user=user, system_user=system_user)
data['type'] = 'asset'
data.update(asset_detail)
else:
app_detail = self._get_application_secret_detail(value)
data['type'] = 'application'
data.update(app_detail)
serializer = self.get_serializer(data)
return Response(data=serializer.data, status=200)
def get_permissions(self):
if self.action in ["create", "get_rdp_file"]:
if self.request.data.get('user', None):
self.permission_classes = (IsSuperUser,)
else:
self.permission_classes = (IsValidUser,)
return super().get_permissions()
def get(self, request):
token = request.query_params.get('token')
key = self.CACHE_KEY_PREFIX.format(token)
value = cache.get(key, None)
if not value:
return Response('', status=404)
return Response(value)