1 /*
2  * Copyright (C) 2020 The Android Open Source Project
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 
17 #pragma once
18 
19 namespace android::net {
20 
21 enum class PrivateDnsTransport : uint8_t {
22     kDot,  // DNS over TLS.
23     kDoh,  // DNS over HTTPS.
24 };
25 
26 // Validation status of a private DNS server on a specific netId.
27 enum class Validation : uint8_t {
28     in_process,
29     success,
30     success_but_expired,
31     fail,
32     unknown_server,
33     unknown_netid,
34 };
35 
36 // The private DNS mode on a specific netId.
37 enum class PrivateDnsMode : uint8_t {
38     OFF,
39     OPPORTUNISTIC,
40     STRICT,
41 };
42 
43 constexpr const char* validationStatusToString(Validation value) {
44     switch (value) {
45         case Validation::in_process:
46             return "in_process";
47         case Validation::success:
48             return "success";
49         case Validation::success_but_expired:
50             return "success_but_expired";
51         case Validation::fail:
52             return "fail";
53         case Validation::unknown_server:
54             return "unknown_server";
55         case Validation::unknown_netid:
56             return "unknown_netid";
57         default:
58             return "unknown_status";
59     }
60 }
61 
62 constexpr const char* getPrivateDnsModeString(PrivateDnsMode mode) {
63     switch (mode) {
64         case PrivateDnsMode::OFF:
65             return "OFF";
66         case PrivateDnsMode::OPPORTUNISTIC:
67             return "OPPORTUNISTIC";
68         case PrivateDnsMode::STRICT:
69             return "STRICT";
70     }
71 }
72 
73 }  // namespace android::net
74