blob: 6da95309f7bb57fc46b85b4620f67d5c2956dd2e [file] [log] [blame]
// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/updater/installer.h"
#include <utility>
#include "base/callback.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "chrome/updater/updater_constants.h"
#include "chrome/updater/util.h"
#include "components/crx_file/crx_verifier.h"
#include "components/update_client/update_client_errors.h"
#include "components/update_client/utils.h"
namespace updater {
namespace {
// Version "0" corresponds to no installed version.
const char kNullVersion[] = "0.0.0.0";
// Returns the full path to the installation directory for the application
// identified by the |app_id|.
base::FilePath GetAppInstallDir(const std::string& app_id) {
base::FilePath app_install_dir;
if (GetProductDirectory(&app_install_dir)) {
app_install_dir = app_install_dir.AppendASCII(kAppsDir);
app_install_dir = app_install_dir.AppendASCII(app_id);
}
return app_install_dir;
}
} // namespace
Installer::InstallInfo::InstallInfo() : version(kNullVersion) {}
Installer::InstallInfo::~InstallInfo() = default;
Installer::Installer(const std::string& app_id)
: app_id_(app_id), install_info_(std::make_unique<InstallInfo>()) {}
Installer::~Installer() = default;
update_client::CrxComponent Installer::MakeCrxComponent() {
update_client::CrxComponent component;
component.installer = scoped_refptr<Installer>(this);
component.requires_network_encryption = false;
component.crx_format_requirement =
crx_file::VerifierFormat::CRX3_WITH_PUBLISHER_PROOF;
component.app_id = app_id_;
component.name = app_id_;
component.version = install_info_->version;
component.fingerprint = install_info_->fingerprint;
return component;
}
void Installer::FindInstallOfApp() {
VLOG(1) << __func__ << " for " << app_id_;
const base::FilePath app_install_dir = GetAppInstallDir(app_id_);
if (app_install_dir.empty() || !base::PathExists(app_install_dir)) {
install_info_ = std::make_unique<InstallInfo>();
return;
}
base::Version latest_version(kNullVersion);
base::FilePath latest_path;
std::vector<base::FilePath> older_paths;
base::FileEnumerator file_enumerator(app_install_dir, false,
base::FileEnumerator::DIRECTORIES);
for (auto path = file_enumerator.Next(); !path.value().empty();
path = file_enumerator.Next()) {
const base::Version version(path.BaseName().MaybeAsASCII());
// Ignore folders that don't have valid version names.
if (!version.IsValid())
continue;
// The |version| not newer than the latest found version is marked for
// removal. |kNullVersion| is also removed.
if (version.CompareTo(latest_version) <= 0) {
older_paths.push_back(path);
continue;
}
// New valid |version| folder found.
if (!latest_path.empty())
older_paths.push_back(latest_path);
latest_version = version;
latest_path = path;
}
install_info_->version = latest_version;
install_info_->install_dir = latest_path;
install_info_->manifest = update_client::ReadManifest(latest_path);
base::ReadFileToString(latest_path.AppendASCII("manifest.fingerprint"),
&install_info_->fingerprint);
for (const auto& older_path : older_paths)
base::DeleteFile(older_path, true);
}
Installer::Result Installer::InstallHelper(const base::FilePath& unpack_path) {
auto local_manifest = update_client::ReadManifest(unpack_path);
if (!local_manifest)
return Result(update_client::InstallError::BAD_MANIFEST);
std::string version_ascii;
local_manifest->GetStringASCII("version", &version_ascii);
const base::Version manifest_version(version_ascii);
VLOG(1) << "Installed version=" << install_info_->version.GetString()
<< ", installing version=" << manifest_version.GetString();
if (!manifest_version.IsValid())
return Result(update_client::InstallError::INVALID_VERSION);
if (install_info_->version.CompareTo(manifest_version) > 0)
return Result(update_client::InstallError::VERSION_NOT_UPGRADED);
const base::FilePath app_install_dir = GetAppInstallDir(app_id_);
if (app_install_dir.empty())
return Result(update_client::InstallError::NO_DIR_COMPONENT_USER);
if (!base::CreateDirectory(app_install_dir)) {
return Result(
static_cast<int>(update_client::InstallError::CUSTOM_ERROR_BASE) +
kCustomInstallErrorCreateAppInstallDirectory);
}
const auto versioned_install_dir =
app_install_dir.AppendASCII(manifest_version.GetString());
if (base::PathExists(versioned_install_dir)) {
if (!base::DeleteFile(versioned_install_dir, true))
return Result(update_client::InstallError::CLEAN_INSTALL_DIR_FAILED);
}
VLOG(1) << "Install_path=" << versioned_install_dir.AsUTF8Unsafe();
if (!base::Move(unpack_path, versioned_install_dir)) {
PLOG(ERROR) << "Move failed.";
base::DeleteFile(versioned_install_dir, true);
return Result(update_client::InstallError::MOVE_FILES_ERROR);
}
DCHECK(!base::PathExists(unpack_path));
DCHECK(base::PathExists(versioned_install_dir));
install_info_->manifest = std::move(local_manifest);
install_info_->version = manifest_version;
install_info_->install_dir = versioned_install_dir;
base::ReadFileToString(
versioned_install_dir.AppendASCII("manifest.fingerprint"),
&install_info_->fingerprint);
return Result(update_client::InstallError::NONE);
}
void Installer::OnUpdateError(int error) {
LOG(ERROR) << "updater error: " << error << " for " << app_id_;
}
void Installer::Install(const base::FilePath& unpack_path,
const std::string& public_key,
Callback callback) {
std::unique_ptr<base::DictionaryValue> manifest;
base::Version version;
base::FilePath install_path;
const auto result = InstallHelper(unpack_path);
base::DeleteFile(unpack_path, true);
std::move(callback).Run(result);
}
bool Installer::GetInstalledFile(const std::string& file,
base::FilePath* installed_file) {
return false;
}
bool Installer::Uninstall() {
return false;
}
} // namespace updater