1 /*
2 Copyright (c) 2019 Intel Corporation
3 
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
7 
8       http://www.apache.org/licenses/LICENSE-2.0
9 
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15 */
16 #pragma once
17 
18 #include <systemd/sd-id128.h>
19 
20 #include <array>
21 #include <string>
22 
23 namespace redfish
24 {
25 
26 namespace systemd_utils
27 {
28 
29 /**
30  * @brief Retrieve service root UUID
31  *
32  * @return Service root UUID
33  */
34 
35 inline std::string getUuid()
36 {
37     std::string ret;
38     // This ID needs to match the one in ipmid
39     sd_id128_t appId{{0Xe0, 0Xe1, 0X73, 0X76, 0X64, 0X61, 0X47, 0Xda, 0Xa5,
40                       0X0c, 0Xd0, 0Xcc, 0X64, 0X12, 0X45, 0X78}};
41     sd_id128_t machineId{};
42 
43     if (sd_id128_get_machine_app_specific(appId, &machineId) == 0)
44     {
45         std::array<char, SD_ID128_STRING_MAX> str{};
46         ret = sd_id128_to_string(machineId, str.data());
47         ret.insert(8, 1, '-');
48         ret.insert(13, 1, '-');
49         ret.insert(18, 1, '-');
50         ret.insert(23, 1, '-');
51     }
52 
53     return ret;
54 }
55 
56 } // namespace systemd_utils
57 } // namespace redfish
58