1 /*
2 * Copyright (C) 2019 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
18 #pragma once
19
20 #include <chrono>
21 #include <string>
22
23 #include <netinet/in.h>
24
25 #include <android-base/properties.h>
26 #include <android-modules-utils/sdk_level.h>
27
28 #include "Experiments.h"
29
30 socklen_t sockaddrSize(const sockaddr* sa);
31 socklen_t sockaddrSize(const sockaddr_storage& ss);
32
33 // TODO: getExperimentFlagString
34 // TODO: Migrate it to DnsResolverExperiments.cpp
35 int getExperimentFlagInt(const std::string& flagName, int defaultValue);
36
37 // Convert time_point to readable string format "hr:min:sec.ms".
38 std::string timestampToString(const std::chrono::system_clock::time_point& ts);
39
40 // When sdk X release branch is created, aosp's sdk version would still be X-1,
41 // internal would be X. Also there might be some different setting between real devices and
42 // CF. Below is the example for the sdk related properties in later R development stage. (internal
43 // should be cosidered as S and aosp should be considered as R.)
44 // R version is 30, rvc-dev aosp(CF) aosp(non-CF) internal
45 // ro.build.version.sdk: [30] [29] [29] [30]
46 // Note that, ro.product.first_api_level is device specific - so the value might be various.
47 // ro.product.first_api_level: [26-30] [31] [28] [26-30]
48 // ro.build.version.preview_sdk: [0] [1] [1] [1]
getApiLevel()49 inline uint64_t getApiLevel() {
50 uint64_t buildVersionSdk = android::base::GetUintProperty<uint64_t>("ro.build.version.sdk", 0);
51 uint64_t buildVersionPreviewSdk =
52 android::base::GetUintProperty<uint64_t>("ro.build.version.preview_sdk", 0);
53 uint64_t firstApiLevel =
54 android::base::GetUintProperty<uint64_t>("ro.product.first_api_level", 0);
55 return std::max(buildVersionSdk + !!buildVersionPreviewSdk, firstApiLevel);
56 }
57
58 // It's the identical strategy as frameworks/base/core/java/android/os/Build.java did.
59 // There's also equivalent C++ code in system/core/init/property_service.cpp
60 // (and it is CTS tested in BuildTest.java)
isDebuggable()61 inline bool isDebuggable() {
62 return android::base::GetBoolProperty("ro.debuggable", false);
63 }
64
isDoHEnabled()65 inline bool isDoHEnabled() {
66 static bool isAtLeastT = android::modules::sdklevel::IsAtLeastT();
67 return android::net::Experiments::getInstance()->getFlag("doh", isAtLeastT ? 1 : 0);
68 }
69
isAtLeastU()70 inline bool isAtLeastU() {
71 const static bool isAtLeastU = android::modules::sdklevel::IsAtLeastU();
72 return isAtLeastU;
73 }