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// Copyright 2020 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/browser/upgrade_detector/get_installed_version.h"
#include <string>
#include <utility>
#include "base/command_line.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/logging.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 "chrome/common/chrome_switches.h"
namespace {
// On Linux, the Chrome binary may have been replaced by an update. Ask it to
// report its version.
InstalledAndCriticalVersion GetInstalledVersionSynchronous() {
base::CommandLine command_line(*base::CommandLine::ForCurrentProcess());
command_line.AppendSwitch(switches::kProductVersion);
base::Version installed_version;
std::string reply;
if (base::GetAppOutput(command_line, &reply)) {
installed_version =
base::Version(base::TrimWhitespaceASCII(reply, base::TRIM_ALL));
}
// Failure may be a result of invoking a Chrome that predates the introduction
// of the --product-version switch in https://crrev.com/48795 (6.0.424.0).
DLOG_IF(ERROR, !installed_version.IsValid())
<< "Failed to get current file version; child process replied with: "
<< reply;
return InstalledAndCriticalVersion(std::move(installed_version));
}
} // namespace
void GetInstalledVersion(InstalledVersionCallback callback) {
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE,
{base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN, base::MayBlock()},
base::BindOnce(&GetInstalledVersionSynchronous), std::move(callback));
}
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