f63f6011fa
This is to get name/version when the HAL is started from an APEX. This is the initial work and just prints name/version on startup. Bug: 268439003 Test: adb logcat | grep com.google.android.widevine Change-Id: I756c042d544f973999738f7d17022d916b9712cd
75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
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* Copyright 2023 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 "widevine_apex_info.h"
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#include <android-base/file.h>
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#include <android-base/strings.h>
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#include "apex_manifest_minimal.pb.h"
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using android::base::ConsumePrefix;
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using android::base::ErrnoError;
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using android::base::Error;
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using android::base::GetExecutablePath;
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using android::base::ReadFileToString;
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using android::base::Result;
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using apex::proto::ApexManifest;
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namespace widevine::apex {
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namespace {
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Result<std::string> GetApexNameFromPath(const std::string& path) {
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std::string_view sv{path};
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if (!ConsumePrefix(&sv, "/apex/")) {
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return Error() << "Not found an apex name: " << path;
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}
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return std::string{sv.substr(0, sv.find('/'))};
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}
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Result<ApexManifest> ParseApexManifest(const std::string& manifest_path) {
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std::string content;
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if (!ReadFileToString(manifest_path, &content)) {
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return ErrnoError() << "Failed to read manifest file: " << manifest_path;
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}
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ApexManifest manifest;
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if (!manifest.ParseFromString(content)) {
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return Error() << "Can't parse APEX manifest: " << manifest_path;
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}
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return manifest;
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}
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}
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Result<ApexInfo> GetApexInfo() {
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auto exe_path = GetExecutablePath();
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auto apex_name = GetApexNameFromPath(exe_path);
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if (!apex_name.ok()) {
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return apex_name.error();
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}
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auto manifest_path = fmt::format("/apex/{}/apex_manifest.pb", *apex_name);
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auto apex_manifest = ParseApexManifest(manifest_path);
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if (!apex_manifest.ok()) {
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return apex_manifest.error();
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}
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return ApexInfo {
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apex_manifest->name(),
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apex_manifest->version(),
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};
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}
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} // namespace widevine::apex
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