Beispiel #1
0
    def post(self, request):
        """Add a group in address book.

        parent_group: -1 - no parent group;
                      > 0 - have parent group.
        group_owner: default to system admin
        group_staff: default to system admin
        """
        group_name = request.data.get('group_name', '').strip()
        if not group_name:
            error_msg = 'name %s invalid.' % group_name
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # Check whether group name is validate.
        if not validate_group_name(group_name):
            error_msg = _('Name can only contain letters, numbers, blank, hyphen or underscore.')
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # Check whether group name is duplicated.
        pattern_matched_groups = ccnet_api.search_groups(group_name, -1, -1)
        for group in pattern_matched_groups:
            if group.group_name == group_name:
                error_msg = _('There is already a group with that name.')
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # Group owner is 'system admin'
        group_owner = request.data.get('group_owner', '')

        try:
            parent_group = int(request.data.get('parent_group', -1))
        except ValueError:
            error_msg = 'parent_group invalid'
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        if parent_group < 0 and parent_group != -1:
            error_msg = 'parent_group invalid'
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # TODO: check parent group exists

        try:
            if is_org_context(request):
                # request called by org admin
                org_id = request.user.org.org_id
                group_id = ccnet_api.create_org_group(
                    org_id, group_name, group_owner,
                    parent_group_id=parent_group)
            else:
                group_id = ccnet_api.create_group(group_name, group_owner,
                                                  parent_group_id=parent_group)
            seafile_api.set_group_quota(group_id, -2)
        except SearpcError as e:
            logger.error(e)
            error_msg = 'Internal Server Error'
            return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)

        # get info of new group
        group_info = address_book_group_to_dict(group_id)

        return Response(group_info, status=status.HTTP_200_OK)
Beispiel #2
0
    def test_can_clean_department_repo_trash(self):
        if not LOCAL_PRO_DEV_ENV:
            return

        # create a department
        group_id = ccnet_api.create_group('department_test',
                                          'system admin',
                                          parent_group_id=-1)
        seafile_api.set_group_quota(group_id, -2)
        repo_id = seafile_api.add_group_owned_repo(group_id, 'dep_test', 'rw')
        repo_owner = seafile_api.get_repo_owner(repo_id)
        assert '@seafile_group' in repo_owner
        group_repos = seafile_api.get_repos_by_group(group_id)
        assert len(group_repos) == 1
        group = ccnet_api.get_group(group_id)

        # department add user
        ccnet_api.group_add_member(group_id, group.creator_name,
                                   self.user_name)
        ccnet_api.group_add_member(group_id, group.creator_name,
                                   self.tmp_user.username)
        ccnet_api.group_set_admin(group_id, self.user_name)
        ccnet_api.group_unset_admin(group_id, self.tmp_user.username)
        assert is_group_admin(group_id, self.user_name)
        assert not is_group_admin(group_id, self.tmp_user.username)

        file_name = 'dep_test.txt'
        self.create_file(repo_id=repo_id,
                         parent_dir='/',
                         filename=file_name,
                         username=self.user_name)

        # delete a file first
        seafile_api.del_file(repo_id, '/', file_name, self.user_name)

        # get trash item count
        self.login_as(self.user)
        resp = self.client.get(reverse('api-v2.1-repo-trash', args=[repo_id]))
        json_resp = json.loads(resp.content)
        assert len(json_resp['data']) > 0

        # department member can not clean trash
        self.logout()
        self.login_as(self.tmp_user)
        resp = self.client.delete(self.url)
        self.assertEqual(403, resp.status_code)

        # department admin can clean library trash
        self.logout()
        self.login_as(self.user)
        ccnet_api.group_set_admin(group_id, self.user_name)
        resp = self.client.delete(self.url)
        self.assertEqual(200, resp.status_code)

        # get trash item count again
        resp = self.client.get(self.url)
        json_resp = json.loads(resp.content)
        assert len(json_resp['data']) == 0
Beispiel #3
0
    def post(self, request):
        """Add a group in address book.

        parent_group: -1 - no parent group;
                      > 0 - have parent group.
        group_owner: default to system admin
        group_staff: default to system admin
        """
        group_name = request.data.get('group_name', '').strip()
        if not group_name:
            error_msg = 'name %s invalid.' % group_name
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # Check whether group name is validate.
        if not validate_group_name(group_name):
            error_msg = _(u'Name can only contain letters, numbers, blank, hyphen or underscore.')
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # Check whether group name is duplicated.
        if check_group_name_conflict(request, group_name):
            error_msg = _(u'The name already exists.')
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # Group owner is 'system admin'
        group_owner = request.data.get('group_owner', '')

        try:
            parent_group = int(request.data.get('parent_group', -1))
        except ValueError:
            error_msg = 'parent_group invalid'
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        if parent_group < 0 and parent_group != -1:
            error_msg = 'parent_group invalid'
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # TODO: check parent group exists

        try:
            if is_org_context(request):
                # request called by org admin
                org_id = request.user.org.org_id
                group_id = ccnet_api.create_org_group(
                    org_id, group_name, group_owner,
                    parent_group_id=parent_group)
            else:
                group_id = ccnet_api.create_group(group_name, group_owner,
                                                  parent_group_id=parent_group)
            seafile_api.set_group_quota(group_id, -2)
        except SearpcError as e:
            logger.error(e)
            error_msg = 'Internal Server Error'
            return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)

        # get info of new group
        group_info = address_book_group_to_dict(group_id)

        return Response(group_info, status=status.HTTP_200_OK)
Beispiel #4
0
    def test_can_set_department_repo(self):
        if not LOCAL_PRO_DEV_ENV:
            return

        # create a department
        group_id = ccnet_api.create_group('department_test',
                                          'system admin',
                                          parent_group_id=-1)
        seafile_api.set_group_quota(group_id, -2)
        repo_id = seafile_api.add_group_owned_repo(group_id, 'dep_test', 'rw')
        repo_owner = seafile_api.get_repo_owner(repo_id)
        assert '@seafile_group' in repo_owner
        group_repos = seafile_api.get_repos_by_group(group_id)
        assert len(group_repos) == 1
        group = ccnet_api.get_group(group_id)

        # department add user
        ccnet_api.group_add_member(group_id, group.creator_name,
                                   self.user.username)
        ccnet_api.group_add_member(group_id, group.creator_name,
                                   self.tmp_user.username)
        ccnet_api.group_set_admin(group_id, self.user.username)
        ccnet_api.group_unset_admin(group_id, self.tmp_user.username)
        assert is_group_admin(group_id, self.user.username)
        assert not is_group_admin(group_id, self.tmp_user.username)

        url = reverse("api2-repo-history-limit", args=[repo_id])
        self.config.ENABLE_REPO_HISTORY_SETTING = True

        # department member can not set
        self.logout()
        self.login_as(self.tmp_user)
        data = 'keep_days=%s' % 6
        resp = self.client.put(url, data, 'application/x-www-form-urlencoded')
        self.assertEqual(403, resp.status_code)

        # department admin can set
        self.logout()
        self.login_as(self.user)
        data = 'keep_days=%s' % 6
        resp = self.client.put(url, data, 'application/x-www-form-urlencoded')
        self.assertEqual(200, resp.status_code)

        self.remove_group(group_id)
        self.remove_repo(repo_id)
Beispiel #5
0
    def post(self, request):
        """import department from work weixin

        permission: IsProVersion
        """

        if not request.user.admin_permissions.can_manage_user():
            return api_error(status.HTTP_403_FORBIDDEN, 'Permission denied.')

        # argument check
        department_id = request.data.get('work_weixin_department_id')
        try:
            department_id = int(department_id)
        except Exception as e:
            logger.error(e)
            error_msg = 'work_weixin_department_ids invalid.'
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        # is pro version and work weixin check
        if not IsProVersion or not admin_work_weixin_departments_check():
            error_msg = 'Feature is not enabled.'
            return api_error(status.HTTP_403_FORBIDDEN, error_msg)

        access_token = get_work_weixin_access_token()
        if not access_token:
            logger.error('can not get work weixin access_token')
            error_msg = '获取企业微信组织架构失败'
            return api_error(status.HTTP_404_NOT_FOUND, error_msg)

        # list departments from work weixin
        api_department_list = self._list_departments_from_work_weixin(
            access_token, department_id)
        if api_department_list is None:
            error_msg = '获取企业微信组织架构失败'
            return api_error(status.HTTP_404_NOT_FOUND, error_msg)

        # list department members from work weixin
        api_user_list = self._list_department_members_from_work_weixin(
            access_token, department_id)
        if api_user_list is None:
            error_msg = '获取企业微信组织架构成员失败'
            return api_error(status.HTTP_404_NOT_FOUND, error_msg)

        # main
        success = list()
        failed = list()
        department_map_to_group_dict = dict()

        for index, department_obj in enumerate(api_department_list):
            # check department argument
            new_group_name = department_obj.get('name')
            department_obj_id = department_obj.get('id')
            if department_obj_id is None or not new_group_name or not validate_group_name(
                    new_group_name):
                failed_msg = self._api_department_failed_msg(
                    department_obj_id, new_group_name, '部门参数错误')
                failed.append(failed_msg)
                continue

            # check parent group
            if index == 0:
                parent_group_id = -1
            else:
                parent_department_id = department_obj.get('parentid')
                parent_group_id = department_map_to_group_dict.get(
                    parent_department_id)

            if parent_group_id is None:
                failed_msg = self._api_department_failed_msg(
                    department_obj_id, new_group_name, '父级部门不存在')
                failed.append(failed_msg)
                continue

            # check department exist by group name
            exist, exist_group = self._admin_check_group_name_conflict(
                new_group_name)
            if exist:
                department_map_to_group_dict[
                    department_obj_id] = exist_group.id
                failed_msg = self._api_department_failed_msg(
                    department_obj_id, new_group_name, '部门已存在')
                failed.append(failed_msg)
                continue

            # import department
            try:
                group_id = ccnet_api.create_group(
                    new_group_name,
                    DEPARTMENT_OWNER,
                    parent_group_id=parent_group_id)

                seafile_api.set_group_quota(group_id, -2)

                department_map_to_group_dict[department_obj_id] = group_id
                success_msg = self._api_department_success_msg(
                    department_obj_id, new_group_name, group_id)
                success.append(success_msg)
            except Exception as e:
                logger.error(e)
                failed_msg = self._api_department_failed_msg(
                    department_obj_id, new_group_name, '部门导入失败')
                failed.append(failed_msg)

        # todo filter ccnet User database
        social_auth_queryset = SocialAuthUser.objects.filter(
            provider=WORK_WEIXIN_PROVIDER,
            uid__contains=WORK_WEIXIN_UID_PREFIX)

        # import api_user
        for api_user in api_user_list:
            uid = WORK_WEIXIN_UID_PREFIX + api_user.get('userid', '')
            api_user['contact_email'] = api_user['email']
            api_user_name = api_user.get('name')

            #  determine the user exists
            if social_auth_queryset.filter(uid=uid).exists():
                email = social_auth_queryset.get(uid=uid).username
            else:
                # create user
                email = gen_user_virtual_id()
                create_user_success = _import_user_from_work_weixin(
                    email, api_user)
                if not create_user_success:
                    failed_msg = self._api_user_failed_msg(
                        '', api_user_name, department_id, '导入用户失败')
                    failed.append(failed_msg)
                    continue

            # bind user to department
            api_user_department_list = api_user.get('department')
            for department_obj_id in api_user_department_list:
                group_id = department_map_to_group_dict.get(department_obj_id)
                if group_id is None:
                    # the api_user also exist in the brother department which not import
                    continue

                if ccnet_api.is_group_user(group_id, email):
                    failed_msg = self._api_user_failed_msg(
                        email, api_user_name, department_obj_id, '部门成员已存在')
                    failed.append(failed_msg)
                    continue

                try:
                    ccnet_api.group_add_member(group_id, DEPARTMENT_OWNER,
                                               email)
                    success_msg = self._api_user_success_msg(
                        email, api_user_name, department_obj_id, group_id)
                    success.append(success_msg)
                except Exception as e:
                    logger.error(e)
                    failed_msg = self._api_user_failed_msg(
                        email, api_user_name, department_id, '导入部门成员失败')
                    failed.append(failed_msg)

        return Response({
            'success': success,
            'failed': failed,
        })
Beispiel #6
0
    def put(self, request, group_id):
        """ Admin update a group

        1. transfer a group.
        2. set group quota

        Permission checking:
        1. Admin user;
        """

        # recourse check
        group_id = int(group_id)  # Checked by URL Conf
        group = ccnet_api.get_group(group_id)
        if not group:
            error_msg = 'Group %d not found.' % group_id
            return api_error(status.HTTP_404_NOT_FOUND, error_msg)

        new_owner = request.data.get('new_owner', '')
        if new_owner:
            if not is_valid_username(new_owner):
                error_msg = 'new_owner %s invalid.' % new_owner
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

            # check if new_owner exists,
            # NOT need to check old_owner for old_owner may has been deleted.
            try:
                User.objects.get(email=new_owner)
            except User.DoesNotExist:
                error_msg = 'User %s not found.' % new_owner
                return api_error(status.HTTP_404_NOT_FOUND, error_msg)

            old_owner = group.creator_name
            if new_owner == old_owner:
                error_msg = _(u'User %s is already group owner.') % new_owner
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

            # transfer a group
            try:
                if not is_group_member(group_id, new_owner):
                    ccnet_api.group_add_member(group_id, old_owner, new_owner)

                if not is_group_admin(group_id, new_owner):
                    ccnet_api.group_set_admin(group_id, new_owner)

                ccnet_api.set_group_creator(group_id, new_owner)
                ccnet_api.group_unset_admin(group_id, old_owner)
            except SearpcError as e:
                logger.error(e)
                error_msg = 'Internal Server Error'
                return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR,
                                 error_msg)

            # send admin operation log signal
            admin_op_detail = {
                "id": group_id,
                "name": group.group_name,
                "from": old_owner,
                "to": new_owner,
            }
            admin_operation.send(sender=None,
                                 admin_name=request.user.username,
                                 operation=GROUP_TRANSFER,
                                 detail=admin_op_detail)

        # set group quota
        group_quota = request.data.get('quota', '')
        if group_quota:
            try:
                group_quota = int(group_quota)
            except ValueError:
                error_msg = 'quota invalid.'
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

            if not (group_quota > 0 or group_quota == -2):
                error_msg = 'quota invalid.'
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

            try:
                seafile_api.set_group_quota(group_id, group_quota)
            except Exception as e:
                logger.error(e)
                error_msg = 'Internal Server Error'
                return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR,
                                 error_msg)

        group_info = get_group_info(group_id)
        return Response(group_info)
Beispiel #7
0
    def post(self, request):
        """import department from dingtalk
        """

        if not ENABLE_DINGTALK:
            error_msg = 'Feature is not enabled.'
            return api_error(status.HTTP_403_FORBIDDEN, error_msg)

        if not request.user.admin_permissions.can_manage_user():
            return api_error(status.HTTP_403_FORBIDDEN, 'Permission denied.')

        # argument check
        department_id = request.data.get('department_id')
        try:
            department_id = int(department_id)
        except Exception as e:
            logger.error(e)
            error_msg = 'department_id invalid.'
            return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

        access_token = dingtalk_get_access_token()
        if not access_token:
            error_msg = '获取钉钉组织架构失败'
            return api_error(status.HTTP_404_NOT_FOUND, error_msg)

        # get department list
        # https://developers.dingtalk.com/document/app/obtain-the-department-list
        data = {'access_token': access_token, 'id': department_id}
        current_department_resp_json = requests.get(DINGTALK_DEPARTMENT_GET_DEPARTMENT_URL, params=data).json()
        current_department_list = [current_department_resp_json]
        sub_department_resp_json = requests.get(DINGTALK_DEPARTMENT_LIST_DEPARTMENT_URL, params=data).json()
        sub_department_list = sub_department_resp_json.get('department', [])
        department_list = current_department_list + sub_department_list
        department_list = sorted(department_list, key=lambda x:x['id'])

        # get department user list
        data = {
            'access_token': access_token,
            'department_id': department_id,
            'offset': 0,
            'size': DINGTALK_DEPARTMENT_USER_SIZE,
        }
        user_resp_json = requests.get(DINGTALK_DEPARTMENT_GET_DEPARTMENT_USER_LIST_URL, params=data).json()
        api_user_list = user_resp_json.get('userlist', [])

        # main
        success = list()
        failed = list()
        department_map_to_group_dict = dict()

        for index, department_obj in enumerate(department_list):
            # check department argument
            new_group_name = department_obj.get('name')
            department_obj_id = department_obj.get('id')
            parent_department_id = department_obj.get('parentid', 0)
            if department_obj_id is None or not new_group_name or not validate_group_name(new_group_name):
                failed_msg = self._api_department_failed_msg(
                    department_obj_id, new_group_name, '部门参数错误')
                failed.append(failed_msg)
                continue

            # check parent group
            if index == 0:
                parent_group_id = -1
            else:
                parent_group_id = department_map_to_group_dict.get(parent_department_id)

            if parent_group_id is None:
                failed_msg = self._api_department_failed_msg(
                    department_obj_id, new_group_name, '父级部门不存在')
                failed.append(failed_msg)
                continue

            # check department exist
            exist_department = ExternalDepartment.objects.get_by_provider_and_outer_id(
                DINGTALK_PROVIDER, department_obj_id)
            if exist_department:
                department_map_to_group_dict[department_obj_id] = exist_department.group_id
                failed_msg = self._api_department_failed_msg(
                    department_obj_id, new_group_name, '部门已存在')
                failed.append(failed_msg)
                continue

            # import department
            try:
                group_id = ccnet_api.create_group(
                    new_group_name, DEPARTMENT_OWNER, parent_group_id=parent_group_id)

                seafile_api.set_group_quota(group_id, -2)

                ExternalDepartment.objects.create(
                    group_id=group_id,
                    provider=DINGTALK_PROVIDER,
                    outer_id=department_obj_id,
                )

                department_map_to_group_dict[department_obj_id] = group_id
                success_msg = self._api_department_success_msg(
                    department_obj_id, new_group_name, group_id)
                success.append(success_msg)
            except Exception as e:
                logger.error(e)
                failed_msg = self._api_department_failed_msg(
                    department_obj_id, new_group_name, '部门导入失败')
                failed.append(failed_msg)

        # todo filter ccnet User database
        social_auth_queryset = SocialAuthUser.objects.filter(provider='dingtalk')

        # import api_user
        for api_user in api_user_list:
            uid = api_user.get('unionid', '')
            api_user['contact_email'] = api_user['email']
            api_user_name = api_user.get('name')

            #  determine the user exists
            if social_auth_queryset.filter(uid=uid).exists():
                email = social_auth_queryset.get(uid=uid).username
            else:
                # create user
                email = gen_user_virtual_id()
                try:
                    User.objects.create_user(email)
                    SocialAuthUser.objects.add(email, 'dingtalk', uid)
                except Exception as e:
                    logger.error(e)
                    failed_msg = self._api_user_failed_msg(
                        '', api_user_name, department_id, '导入用户失败')
                    failed.append(failed_msg)
                    continue

            # bind user to department
            api_user_department_list = api_user.get('department')
            for department_obj_id in api_user_department_list:
                group_id = department_map_to_group_dict.get(department_obj_id)
                if group_id is None:
                    # the api_user also exist in the brother department which not import
                    continue

                if ccnet_api.is_group_user(group_id, email, in_structure=False):
                    failed_msg = self._api_user_failed_msg(
                        email, api_user_name, department_obj_id, '部门成员已存在')
                    failed.append(failed_msg)
                    continue

                try:
                    ccnet_api.group_add_member(group_id, DEPARTMENT_OWNER, email)
                    success_msg = self._api_user_success_msg(
                        email, api_user_name, department_obj_id, group_id)
                    success.append(success_msg)
                except Exception as e:
                    logger.error(e)
                    failed_msg = self._api_user_failed_msg(
                        email, api_user_name, department_id, '导入部门成员失败')
                    failed.append(failed_msg)

                try:
                    update_dingtalk_user_info(email,
                                              api_user.get('name'),
                                              api_user.get('contact_email'),
                                              api_user.get('avatar'))
                except Exception as e:
                    logger.error(e)

        return Response({
            'success': success,
            'failed': failed,
        })
    def create_and_add_group_to_db(self, dn_name, group, group_dn_db,
                                   group_data_ldap):
        if group.is_department and group_dn_db.has_key(dn_name):
            return group_dn_db[dn_name]

        super_user = None
        if group.is_department:
            super_user = '******'
        else:
            super_user = LdapGroupSync.get_super_user()

        parent_id = 0
        if not group.is_department:
            parent_id = 0
        else:
            if not group.parent_dn:
                parent_id = -1
            elif group_dn_db.has_key(group.parent_dn):
                parent_id = group_dn_db[group.parent_dn]
            else:
                parent_group = group_data_ldap[group.parent_dn]
                parent_id = self.create_and_add_group_to_db(
                    group.parent_dn, parent_group, group_dn_db,
                    group_data_ldap)

        group_id = ccnet_api.create_group(group.cn, super_user, 'LDAP',
                                          parent_id)
        if group_id < 0:
            logger.warning('create ldap group [%s] failed.' % group.cn)
            return

        ret = add_group_dn_pair(group_id, dn_name)
        if ret < 0:
            logger.warning('add group dn pair %d<->%s failed.' %
                           (group_id, dn_name))
            # admin should remove created group manually in web
            return
        logger.debug('create group %d, and add dn pair %s<->%d success.' %
                     (group_id, dn_name, group_id))
        self.agroup += 1
        group.group_id = group_id
        if group.is_department:
            if group.config.default_department_quota > 0:
                quota_to_set = group.config.default_department_quota * 1000000
            else:
                quota_to_set = group.config.default_department_quota
            ret = seafile_api.set_group_quota(group_id, quota_to_set)
            if ret < 0:
                logger.warning('Failed to set group [%s] quota.' % group.cn)
            if group.config.create_department_library:
                ret = seafile_api.add_group_owned_repo(group_id, group.cn,
                                                       'rw')
                if not ret:
                    logger.warning(
                        'Failed to create group owned repo for %s.' % group.cn)

        for member in group.members:
            ret = group_add_member(group_id, super_user, member)
            if ret < 0:
                logger.warning('add member %s to group %d failed.' %
                               (member, group_id))
                return
            logger.debug('add member %s to group %d success.' %
                         (member, group_id))

        group_dn_db[dn_name] = group_id

        return group_id
Beispiel #9
0
    def put(self, request, group_id):
        """ Admin update a group

        1. transfer a group.
        2. set group quota

        Permission checking:
        1. Admin user;
        """

        # recourse check
        group_id = int(group_id) # Checked by URL Conf
        group = ccnet_api.get_group(group_id)
        if not group:
            error_msg = 'Group %d not found.' % group_id
            return api_error(status.HTTP_404_NOT_FOUND, error_msg)

        new_owner = request.data.get('new_owner', '')
        if new_owner:
            if not is_valid_username(new_owner):
                error_msg = 'new_owner %s invalid.' % new_owner
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

            # check if new_owner exists,
            # NOT need to check old_owner for old_owner may has been deleted.
            try:
                User.objects.get(email=new_owner)
            except User.DoesNotExist:
                error_msg = 'User %s not found.' % new_owner
                return api_error(status.HTTP_404_NOT_FOUND, error_msg)

            old_owner = group.creator_name
            if new_owner == old_owner:
                error_msg = _(u'User %s is already group owner.') % new_owner
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

            # transfer a group
            try:
                if not is_group_member(group_id, new_owner):
                    ccnet_api.group_add_member(group_id, old_owner, new_owner)

                if not is_group_admin(group_id, new_owner):
                    ccnet_api.group_set_admin(group_id, new_owner)

                ccnet_api.set_group_creator(group_id, new_owner)
                ccnet_api.group_unset_admin(group_id, old_owner)
            except SearpcError as e:
                logger.error(e)
                error_msg = 'Internal Server Error'
                return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)

            # send admin operation log signal
            admin_op_detail = {
                "id": group_id,
                "name": group.group_name,
                "from": old_owner,
                "to": new_owner,
            }
            admin_operation.send(sender=None, admin_name=request.user.username,
                    operation=GROUP_TRANSFER, detail=admin_op_detail)

        # set group quota
        group_quota = request.data.get('quota', '')
        if group_quota:
            try:
                group_quota = int(group_quota)
            except ValueError:
                error_msg = 'quota invalid.'
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

            if not (group_quota > 0 or group_quota == -2):
                error_msg = 'quota invalid.'
                return api_error(status.HTTP_400_BAD_REQUEST, error_msg)

            try:
                seafile_api.set_group_quota(group_id, group_quota)
            except Exception as e:
                logger.error(e)
                error_msg = 'Internal Server Error'
                return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)

        group_info = get_group_info(group_id)
        return Response(group_info)