104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "os/system_properties.h"
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#include <cutils/properties.h>
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#include <array>
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#include <cctype>
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#include "common/strings.h"
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#include "os/log.h"
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namespace bluetooth {
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namespace os {
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std::optional<std::string> GetSystemProperty(const std::string& property) {
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std::array<char, PROPERTY_VALUE_MAX> value_array{0};
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auto value_len = property_get(property.c_str(), value_array.data(), nullptr);
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if (value_len <= 0) {
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return std::nullopt;
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}
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return std::string(value_array.data(), value_len);
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}
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bool SetSystemProperty(const std::string& property, const std::string& value) {
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if (value.size() >= PROPERTY_VALUE_MAX) {
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LOG_ERROR("Property value's maximum size is %d, but %zu chars were given", PROPERTY_VALUE_MAX - 1, value.size());
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return false;
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}
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auto ret = property_set(property.c_str(), value.c_str());
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if (ret != 0) {
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LOG_ERROR("Set property %s failed with error code %d", property.c_str(), ret);
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return false;
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}
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return true;
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}
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bool IsRootCanalEnabled() {
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auto value = GetSystemProperty("ro.vendor.build.fingerprint");
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if (value.has_value()) {
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LOG_INFO("ro.vendor.build.fingerprint='%s', length=%zu", value->c_str(), value->length());
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} else {
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LOG_INFO("ro.vendor.build.fingerprint is not found");
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}
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// aosp_cf_x86_64_phone is just one platform that currently runs root canal
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// When other platforms appears, or there is a better signal, add them here
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if (value->find("generic/aosp_cf_x86_64_phone") == std::string::npos) {
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LOG_INFO("Not on generic/aosp_cf_x86_64_phone and hence not root canal");
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return false;
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}
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return true;
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}
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int GetAndroidVendorReleaseVersion() {
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auto value = GetSystemProperty("ro.vendor.build.version.release_or_codename");
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if (!value) {
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LOG_INFO("ro.vendor.build.version.release_or_codename does not exist");
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return 0;
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}
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LOG_INFO("ro.vendor.build.version.release_or_codename='%s', length=%zu", value->c_str(), value->length());
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auto int_value = common::Int64FromString(*value);
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if (int_value) {
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return static_cast<int>(*int_value);
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}
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LOG_INFO("value '%s' cannot be parsed to int", value->c_str());
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if (value->empty()) {
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LOG_INFO("value '%s' is empty", value->c_str());
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return 0;
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}
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if (value->length() > 1) {
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LOG_INFO("value '%s' length is %zu, which is > 1", value->c_str(), value->length());
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}
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char release_code = toupper(value->at(0));
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switch (release_code) {
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case 'S':
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return 11;
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case 'R':
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return 10;
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case 'P':
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return 9;
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case 'O':
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return 8;
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default:
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// Treble not enabled before Android O
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return 0;
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}
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}
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} // namespace os
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} // namespace bluetooth
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