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 
27 socklen_t sockaddrSize(const sockaddr* sa);
28 socklen_t sockaddrSize(const sockaddr_storage& ss);
29 
30 // TODO: getExperimentFlagString
31 // TODO: Migrate it to DnsResolverExperiments.cpp
32 int getExperimentFlagInt(const std::string& flagName, int defaultValue);
33 
34 // Convert time_point to readable string format "hr:min:sec.ms".
35 std::string timestampToString(const std::chrono::system_clock::time_point& ts);
36 
37 // When sdk X release branch is created, aosp's sdk version would still be X-1,
38 // internal would be X. Also there might be some different setting between real devices and
39 // CF. Below is the example for the sdk related properties in later R development stage. (internal
40 // should be cosidered as S and aosp should be considered as R.)
41 // R version is 30,                          rvc-dev  aosp(CF)  aosp(non-CF)  internal
42 // ro.build.version.sdk:                     [30]     [29]      [29]          [30]
43 // Note that, ro.product.first_api_level is device specific - so the value might be various.
44 // ro.product.first_api_level:               [26-30]  [31]      [28]          [26-30]
45 // ro.build.version.preview_sdk:             [0]      [1]       [1]           [1]
46 inline uint64_t getApiLevel() {
47     uint64_t buildVersionSdk = android::base::GetUintProperty<uint64_t>("ro.build.version.sdk", 0);
48     uint64_t buildVersionPreviewSdk =
49             android::base::GetUintProperty<uint64_t>("ro.build.version.preview_sdk", 0);
50     uint64_t firstApiLevel =
51             android::base::GetUintProperty<uint64_t>("ro.product.first_api_level", 0);
52     return std::max(buildVersionSdk + !!buildVersionPreviewSdk, firstApiLevel);
53 }
54 
55 // It's the identical strategy as frameworks/base/core/java/android/os/Build.java did.
56 inline bool isUserDebugBuild() {
57     return (android::base::GetProperty("ro.build.type", "user") == "userdebug");
58 }
59