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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/updater/app/app_recover.h"
#include <string>
#include <utility>
#include <vector>
#include "base/barrier_closure.h"
#include "base/check.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/memory/scoped_refptr.h"
#include "base/path_service.h"
#include "base/process/launch.h"
#include "base/strings/string_util.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/version.h"
#include "chrome/updater/activity.h"
#include "chrome/updater/app/app.h"
#include "chrome/updater/branded_constants.h"
#include "chrome/updater/constants.h"
#include "chrome/updater/persisted_data.h"
#include "chrome/updater/prefs.h"
#include "chrome/updater/registration_data.h"
#include "chrome/updater/service_proxy_factory.h"
#include "chrome/updater/update_service.h"
namespace updater {
namespace {
class AppRecover : public App {
public:
AppRecover(const base::Version& browser_version,
const std::string& browser_app_id)
: browser_version_(browser_version), browser_app_id_(browser_app_id) {}
private:
~AppRecover() override = default;
[[nodiscard]] int Initialize() override;
void FirstTaskRun() override;
std::vector<RegistrationRequest> RecordRegisteredApps() const;
int ReinstallUpdater() const;
base::FilePath GetUpdaterSetupPath() const;
void RegisterApps(const std::vector<RegistrationRequest>& registrations,
int reinstall_result);
const base::Version browser_version_;
const std::string browser_app_id_;
scoped_refptr<GlobalPrefs> global_prefs_;
};
int AppRecover::Initialize() {
global_prefs_ = CreateGlobalPrefs(updater_scope());
return kErrorOk;
}
void AppRecover::FirstTaskRun() {
if (!global_prefs_) {
VLOG(0) << "Recovery task could not acquire global prefs.";
// If global prefs cannot be acquired, it's possible that an active updater
// is running but is stuck. Issuing a GetVersion RPC to the updater may
// unstick it, and won't do harm if it is actively working.
scoped_refptr<UpdateService> update_service =
CreateUpdateServiceProxy(updater_scope());
update_service->GetVersion(
base::BindOnce(
[](scoped_refptr<UpdateService> /*update_service*/,
const base::Version& version) {
VLOG(0) << "GetVersion returned " << version;
},
update_service)
.Then(base::BindOnce(&AppRecover::Shutdown, this,
kErrorFailedToLockPrefsMutex)));
return;
}
const std::vector<RegistrationRequest> registrations = RecordRegisteredApps();
// Release global prefs lock so that the updater may run concurrently.
global_prefs_ = nullptr;
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::WithBaseSyncPrimitives()},
base::BindOnce(&AppRecover::ReinstallUpdater, this),
base::BindOnce(&AppRecover::RegisterApps, this, registrations));
}
std::vector<RegistrationRequest> AppRecover::RecordRegisteredApps() const {
CHECK(global_prefs_);
scoped_refptr<PersistedData> data = base::MakeRefCounted<PersistedData>(
updater_scope(), global_prefs_->GetPrefService(), nullptr);
std::vector<RegistrationRequest> apps;
bool found_browser_registration = false;
for (const std::string& app : data->GetAppIds()) {
if (base::EqualsCaseInsensitiveASCII(app, kUpdaterAppId)) {
continue;
}
RegistrationRequest registration;
registration.app_id = app;
registration.brand_code = data->GetBrandCode(app);
registration.brand_path = data->GetBrandPath(app);
registration.ap = data->GetAP(app);
registration.existence_checker_path = data->GetExistenceCheckerPath(app);
if (app == browser_app_id_) {
found_browser_registration = true;
}
if (app == browser_app_id_ && browser_version_.IsValid()) {
registration.version = browser_version_;
} else {
registration.version = data->GetProductVersion(app);
}
apps.push_back(registration);
}
if (!found_browser_registration) {
RegistrationRequest registration;
registration.app_id = browser_app_id_;
registration.version = browser_version_;
apps.emplace_back(registration);
}
return apps;
}
int AppRecover::ReinstallUpdater() const {
base::FilePath setup_path;
if (!base::PathService::Get(base::FILE_EXE, &setup_path)) {
LOG(ERROR) << "PathService failed.";
return kErrorPathServiceFailed;
}
int exit_code = -1;
base::CommandLine uninstall_command(setup_path);
uninstall_command.AppendSwitch(kUninstallSwitch);
if (IsSystemInstall(updater_scope())) {
uninstall_command.AppendSwitch(kSystemSwitch);
}
const base::Process uninstall_process =
base::LaunchProcess(uninstall_command, {});
if (!uninstall_process.IsValid() ||
!uninstall_process.WaitForExit(&exit_code)) {
VLOG(0) << "Failed to wait for the uninstaller to exit.";
return kErrorWaitFailedUninstall;
}
VLOG(0) << "Uninstaller returned " << exit_code << ".";
if (exit_code) {
return exit_code;
}
base::CommandLine install_command(setup_path);
install_command.AppendSwitch(kInstallSwitch);
install_command.AppendSwitch(kSilentSwitch);
if (IsSystemInstall(updater_scope())) {
install_command.AppendSwitch(kSystemSwitch);
}
const base::Process install_process =
base::LaunchProcess(install_command, {});
if (!install_process.IsValid() || !install_process.WaitForExit(&exit_code)) {
VLOG(0) << "Failed to wait for the installer to exit.";
return kErrorWaitFailedInstall;
}
VLOG(0) << "Installer returned " << exit_code << ".";
return exit_code;
}
void AppRecover::RegisterApps(
const std::vector<RegistrationRequest>& registrations,
int reinstall_result) {
if (reinstall_result) {
Shutdown(reinstall_result);
return;
}
scoped_refptr<UpdateService> service =
CreateUpdateServiceProxy(updater_scope());
base::RepeatingClosure barrier = base::BarrierClosure(
registrations.size(),
base::BindOnce(&AppRecover::Shutdown, this, kErrorOk));
for (const RegistrationRequest& registration : registrations) {
service->RegisterApp(registration,
base::BindOnce(
[](const std::string& app,
base::RepeatingClosure barrier, int result) {
VLOG(0) << "Registration for " << app
<< " result: " << result << ".";
barrier.Run();
},
registration.app_id, barrier));
}
}
} // namespace
scoped_refptr<App> MakeAppRecover() {
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
return base::MakeRefCounted<AppRecover>(
base::Version(command_line->GetSwitchValueUTF8(kBrowserVersionSwitch)),
command_line->GetSwitchValueUTF8(kAppGuidSwitch));
}
} // namespace updater
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