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//
// Copyright (C) 2019 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "super_image_mixer.h"
#include <sys/stat.h>
#include <algorithm>
#include <cstdio>
#include <functional>
#include <memory>
#include <android-base/strings.h>
#include <glog/logging.h>
#include "common/libs/utils/archive.h"
#include "common/libs/utils/files.h"
#include "common/libs/utils/subprocess.h"
#include "host/libs/config/cuttlefish_config.h"
#include "host/libs/config/fetcher_config.h"
namespace {
using cvd::FileExists;
using vsoc::DefaultHostArtifactsPath;
std::string TargetFilesZip(const cvd::FetcherConfig& fetcher_config,
cvd::FileSource source) {
for (const auto& file_iter : fetcher_config.get_cvd_files()) {
const auto& file_path = file_iter.first;
const auto& file_info = file_iter.second;
if (file_info.source != source) {
continue;
}
std::string expected_filename = "target_files-" + file_iter.second.build_id + ".zip";
if (!android::base::EndsWith(file_path, expected_filename)) {
continue;
}
return file_path;;
}
return "";
}
const std::string kMiscInfoPath = "META/misc_info.txt";
const std::set<std::string> kDefaultTargetImages = {
"IMAGES/boot.img",
"IMAGES/cache.img",
"IMAGES/recovery.img",
"IMAGES/userdata.img",
"IMAGES/vendor.img",
};
bool CombineTargetZipFiles(const std::string& default_target_zip,
const std::string& system_target_zip,
const std::string& output_path) {
cvd::Archive default_target_archive(default_target_zip);
cvd::Archive system_target_archive(system_target_zip);
auto default_target_contents = default_target_archive.Contents();
if (default_target_contents.size() == 0) {
LOG(ERROR) << "Could not open " << default_target_zip;
return false;
}
auto system_target_contents = system_target_archive.Contents();
if (system_target_contents.size() == 0) {
LOG(ERROR) << "Could not open " << system_target_zip;
return false;
}
if (mkdir(output_path.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) < 0) {
LOG(ERROR) << "Could not create directory " << output_path;
return false;
}
if (std::find(default_target_contents.begin(), default_target_contents.end(), kMiscInfoPath)
== default_target_contents.end()) {
LOG(ERROR) << "Default target files zip does not have " << kMiscInfoPath;
return false;
}
if (!default_target_archive.ExtractFiles({kMiscInfoPath}, output_path)) {
LOG(ERROR) << "Failed to write misc info to output directory";
return false;
}
for (const auto& name : default_target_contents) {
if (!android::base::StartsWith(name, "IMAGES/")) {
continue;
} else if (!android::base::EndsWith(name, ".img")) {
continue;
} else if (kDefaultTargetImages.count(name) == 0) {
continue;
}
LOG(INFO) << "Writing " << name;
if (!default_target_archive.ExtractFiles({name}, output_path)) {
LOG(ERROR) << "Failed to extract " << name << " from the default target zip";
return false;
}
}
for (const auto& name : system_target_contents) {
if (!android::base::StartsWith(name, "IMAGES/")) {
continue;
} else if (!android::base::EndsWith(name, ".img")) {
continue;
} else if (kDefaultTargetImages.count(name) > 0) {
continue;
}
LOG(INFO) << "Writing " << name;
if (!system_target_archive.ExtractFiles({name}, output_path)) {
LOG(ERROR) << "Failed to extract " << name << " from the system target zip";
return false;
}
}
return true;
}
bool BuildSuperImage(const std::string& combined_target_zip,
const std::string& output_path) {
std::string build_super_image_binary;
std::string otatools_path;
if (FileExists(DefaultHostArtifactsPath("otatools/bin/build_super_image"))) {
build_super_image_binary =
DefaultHostArtifactsPath("otatools/bin/build_super_image");
otatools_path = DefaultHostArtifactsPath("otatools");
} else if (FileExists(DefaultHostArtifactsPath("bin/build_super_image"))) {
build_super_image_binary =
DefaultHostArtifactsPath("bin/build_super_image");
otatools_path = DefaultHostArtifactsPath("");
} else {
LOG(ERROR) << "Could not find otatools";
return false;
}
return cvd::execute({
build_super_image_binary,
"--path=" + otatools_path,
combined_target_zip,
output_path,
}) == 0;
}
} // namespace
bool SuperImageNeedsRebuilding(const cvd::FetcherConfig& fetcher_config,
const vsoc::CuttlefishConfig&) {
bool has_default_build = false;
bool has_system_build = false;
for (const auto& file_iter : fetcher_config.get_cvd_files()) {
if (file_iter.second.source == cvd::FileSource::DEFAULT_BUILD) {
has_default_build = true;
} else if (file_iter.second.source == cvd::FileSource::SYSTEM_BUILD) {
has_system_build = true;
}
}
return has_default_build && has_system_build;
}
bool RebuildSuperImage(const cvd::FetcherConfig& fetcher_config,
const vsoc::CuttlefishConfig& config,
const std::string& output_path) {
std::string default_target_zip =
TargetFilesZip(fetcher_config, cvd::FileSource::DEFAULT_BUILD);
if (default_target_zip == "") {
LOG(ERROR) << "Unable to find default target zip file.";
return false;
}
std::string system_target_zip =
TargetFilesZip(fetcher_config, cvd::FileSource::SYSTEM_BUILD);
if (system_target_zip == "") {
LOG(ERROR) << "Unable to find system target zip file.";
return false;
}
std::string combined_target_path = config.PerInstanceInternalPath("target_combined");
// TODO(schuffelen): Use otatools/bin/merge_target_files
if (!CombineTargetZipFiles(default_target_zip, system_target_zip,
combined_target_path)) {
LOG(ERROR) << "Could not combine target zip files.";
return false;
}
bool success = BuildSuperImage(combined_target_path, output_path);
if (!success) {
LOG(ERROR) << "Could not write the final output super image.";
}
return success;
}
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