# -*- coding: utf-8 -*- # import os import tarfile from django.shortcuts import get_object_or_404, reverse from django.utils.translation import ugettext as _ from django.utils.encoding import escape_uri_path from django.http import FileResponse, HttpResponse from django.core.files.storage import default_storage from rest_framework import viewsets, views from rest_framework.response import Response from rest_framework.decorators import action from common.utils import model_to_json from .. import utils from common.const.http import GET from common.utils import is_uuid, get_logger, get_object_or_none from common.mixins.api import AsyncApiMixin from common.permissions import IsOrgAdminOrAppUser, IsOrgAuditor, IsAppUser from common.drf.filters import DatetimeRangeFilter from common.drf.renders import PassthroughRenderer from orgs.mixins.api import OrgBulkModelViewSet from orgs.utils import tmp_to_root_org, tmp_to_org from users.models import User from ..utils import find_session_replay_local, download_session_replay from ..hands import SystemUser from ..models import Session from .. import serializers __all__ = [ 'SessionViewSet', 'SessionReplayViewSet', 'SessionJoinValidateAPI' ] logger = get_logger(__name__) class SessionViewSet(OrgBulkModelViewSet): model = Session serializer_classes = { 'default': serializers.SessionSerializer, 'display': serializers.SessionDisplaySerializer, } permission_classes = (IsOrgAdminOrAppUser, ) search_fields = [ "user", "asset", "system_user", "remote_addr", "protocol", "is_finished", 'login_from', ] filterset_fields = search_fields + ['terminal'] date_range_filter_fields = [ ('date_start', ('date_from', 'date_to')) ] extra_filter_backends = [DatetimeRangeFilter] @staticmethod def prepare_offline_file(session, local_path): replay_path = default_storage.path(local_path) current_dir = os.getcwd() dir_path = os.path.dirname(replay_path) replay_filename = os.path.basename(replay_path) meta_filename = '{}.json'.format(session.id) offline_filename = '{}.tar'.format(session.id) os.chdir(dir_path) with open(meta_filename, 'wt') as f: f.write(model_to_json(session)) with tarfile.open(offline_filename, 'w') as f: f.add(replay_filename) f.add(meta_filename) file = open(offline_filename, 'rb') os.chdir(current_dir) return file @action(methods=[GET], detail=True, renderer_classes=(PassthroughRenderer,), url_path='replay/download', url_name='replay-download') def download(self, request, *args, **kwargs): session = self.get_object() local_path, url = utils.get_session_replay_url(session) if local_path is None: return Response({"error": url}, status=404) file = self.prepare_offline_file(session, local_path) response = FileResponse(file) response['Content-Type'] = 'application/octet-stream' # 这里要注意哦，网上查到的方法都是response['Content-Disposition']='attachment;filename="filename.py"', # 但是如果文件名是英文名没问题，如果文件名包含中文，下载下来的文件名会被改为url中的path。 filename = escape_uri_path('{}.tar'.format(session.id)) disposition = "attachment; filename*=UTF-8''{}".format(filename) response["Content-Disposition"] = disposition return response def filter_queryset(self, queryset): queryset = super().filter_queryset(queryset) # 解决guacamole更新session时并发导致幽灵会话的问题 if self.request.method in ('PATCH',): queryset = queryset.select_for_update() return queryset def perform_create(self, serializer): if hasattr(self.request.user, 'terminal'): serializer.validated_data["terminal"] = self.request.user.terminal sid = serializer.validated_data["system_user"] # guacamole提交的是id if is_uuid(sid): _system_user = get_object_or_404(SystemUser, id=sid) serializer.validated_data["system_user"] = _system_user.name return super().perform_create(serializer) def get_permissions(self): if self.request.method.lower() in ['get', 'options']: self.permission_classes = (IsOrgAdminOrAppUser | IsOrgAuditor, ) return super().get_permissions() class SessionReplayViewSet(AsyncApiMixin, viewsets.ViewSet): serializer_class = serializers.ReplaySerializer permission_classes = (IsOrgAdminOrAppUser | IsOrgAuditor,) session = None download_cache_key = "SESSION_REPLAY_DOWNLOAD_{}" def create(self, request, *args, **kwargs): session_id = kwargs.get('pk') session = get_object_or_404(Session, id=session_id) serializer = self.serializer_class(data=request.data) if serializer.is_valid(): file = serializer.validated_data['file'] name, err = session.save_replay_to_storage(file) if not name: msg = "Failed save replay `{}`: {}".format(session_id, err) logger.error(msg) return Response({'msg': str(err)}, status=400) url = default_storage.url(name) return Response({'url': url}, status=201) else: msg = 'Upload data invalid: {}'.format(serializer.errors) logger.error(msg) return Response({'msg': serializer.errors}, status=401) @staticmethod def get_replay_data(session, url): tp = 'json' if session.protocol in ('rdp', 'vnc'): tp = 'guacamole' download_url = reverse('api-terminal:session-replay-download', kwargs={'pk': session.id}) data = { 'type': tp, 'src': url, 'user': session.user, 'asset': session.asset, 'system_user': session.system_user, 'date_start': session.date_start, 'date_end': session.date_end, 'download_url': download_url, } return data def is_need_async(self): if self.action != 'retrieve': return False return True def retrieve(self, request, *args, **kwargs): session_id = kwargs.get('pk') session = get_object_or_404(Session, id=session_id) local_path, url = find_session_replay_local(session) if not local_path: local_path, url = download_session_replay(session) if not local_path: return Response({"error": url}, status=404) data = self.get_replay_data(session, url) return Response(data) class SessionJoinValidateAPI(views.APIView): permission_classes = (IsAppUser, ) serializer_class = serializers.SessionJoinValidateSerializer def post(self, request, *args, **kwargs): serializer = self.serializer_class(data=request.data) if not serializer.is_valid(): msg = str(serializer.errors) return Response({'ok': False, 'msg': msg}, status=401) user_id = serializer.validated_data['user_id'] session_id = serializer.validated_data['session_id'] with tmp_to_root_org(): session = get_object_or_none(Session, pk=session_id) if not session: msg = _('Session does not exist: {}'.format(session_id)) return Response({'ok': False, 'msg': msg}, status=401) if not session.can_join: msg = _('Session is finished or the protocol not supported') return Response({'ok': False, 'msg': msg}, status=401) user = get_object_or_none(User, pk=user_id) if not user: msg = _('User does not exist: {}'.format(user_id)) return Response({'ok': False, 'msg': msg}, status=401) with tmp_to_org(session.org): if not user.admin_or_audit_orgs: msg = _('User does not have permission') return Response({'ok': False, 'msg': msg}, status=401) return Response({'ok': True, 'msg': ''}, status=200)