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// Copyright (c) 2010 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/browser/upgrade_detector.h"
#include <string>
#include "base/command_line.h"
#include "base/singleton.h"
#include "base/scoped_ptr.h"
#include "base/time.h"
#include "base/task.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/platform_util.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/chrome_version_info.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/notification_type.h"
#include "chrome/common/pref_names.h"
#include "chrome/installer/util/browser_distribution.h"
#if defined(OS_WIN)
#include "chrome/installer/util/install_util.h"
#elif defined(OS_MACOSX)
#include "chrome/browser/ui/cocoa/keystone_glue.h"
#elif defined(OS_POSIX)
#include "base/process_util.h"
#include "base/version.h"
#endif
namespace {
// How often to check for an upgrade.
int GetCheckForUpgradeEveryMs() {
// Check for a value passed via the command line.
int interval_ms;
const CommandLine& cmd_line = *CommandLine::ForCurrentProcess();
std::string interval =
cmd_line.GetSwitchValueASCII(switches::kCheckForUpdateIntervalSec);
if (!interval.empty() && base::StringToInt(interval, &interval_ms))
return interval_ms * 1000; // Command line value is in seconds.
// Otherwise check once an hour for dev channel and once a day for all other
// channels/builds.
const std::string channel = platform_util::GetVersionStringModifier();
int hours;
if (channel == "dev")
hours = 1;
else
hours = 24;
return hours * 60 * 60 * 1000;
}
// How long to wait before notifying the user about the upgrade.
const int kNotifyUserAfterMs = 0;
// This task checks the currently running version of Chrome against the
// installed version. If the installed version is newer, it runs the passed
// callback task. Otherwise it just deletes the task.
class DetectUpgradeTask : public Task {
public:
explicit DetectUpgradeTask(Task* upgrade_detected_task)
: upgrade_detected_task_(upgrade_detected_task) {
}
virtual ~DetectUpgradeTask() {
if (upgrade_detected_task_) {
// This has to get deleted on the same thread it was created.
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
new DeleteTask<Task>(upgrade_detected_task_));
}
}
virtual void Run() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
scoped_ptr<Version> installed_version;
#if defined(OS_WIN)
// Get the version of the currently *installed* instance of Chrome,
// which might be newer than the *running* instance if we have been
// upgraded in the background.
// TODO(tommi): Check if using the default distribution is always the right
// thing to do.
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
installed_version.reset(InstallUtil::GetChromeVersion(dist, false));
if (!installed_version.get()) {
// User level Chrome is not installed, check system level.
installed_version.reset(InstallUtil::GetChromeVersion(dist, true));
}
#elif defined(OS_MACOSX)
installed_version.reset(
Version::GetVersionFromString(UTF16ToASCII(
keystone_glue::CurrentlyInstalledVersion())));
#elif defined(OS_POSIX)
// POSIX but not Mac OS X: Linux, etc.
CommandLine command_line(*CommandLine::ForCurrentProcess());
command_line.AppendSwitch(switches::kProductVersion);
std::string reply;
if (!base::GetAppOutput(command_line, &reply)) {
DLOG(ERROR) << "Failed to get current file version";
return;
}
installed_version.reset(Version::GetVersionFromString(reply));
#endif
// Get the version of the currently *running* instance of Chrome.
chrome::VersionInfo version_info;
if (!version_info.is_valid()) {
NOTREACHED() << "Failed to get current file version";
return;
}
scoped_ptr<Version> running_version(
Version::GetVersionFromString(version_info.Version()));
if (running_version.get() == NULL) {
NOTREACHED() << "Failed to parse version info";
return;
}
// |installed_version| may be NULL when the user downgrades on Linux (by
// switching from dev to beta channel, for example). The user needs a
// restart in this case as well. See http://crbug.com/46547
if (!installed_version.get() ||
(installed_version->CompareTo(*running_version) > 0)) {
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
upgrade_detected_task_);
upgrade_detected_task_ = NULL;
}
}
private:
Task* upgrade_detected_task_;
};
} // namespace
// static
void UpgradeDetector::RegisterPrefs(PrefService* prefs) {
prefs->RegisterBooleanPref(prefs::kRestartLastSessionOnShutdown, false);
}
UpgradeDetector::UpgradeDetector()
: ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)),
notify_upgrade_(false) {
// Windows: only enable upgrade notifications for official builds.
// Mac: only enable them if the updater (Keystone) is present.
// Linux (and other POSIX): always enable regardless of branding.
#if (defined(OS_WIN) && defined(GOOGLE_CHROME_BUILD)) || defined(OS_POSIX)
#if defined(OS_MACOSX)
if (keystone_glue::KeystoneEnabled())
#endif
{
detect_upgrade_timer_.Start(
base::TimeDelta::FromMilliseconds(GetCheckForUpgradeEveryMs()),
this, &UpgradeDetector::CheckForUpgrade);
}
#endif
}
UpgradeDetector::~UpgradeDetector() {
}
// static
UpgradeDetector* UpgradeDetector::GetInstance() {
return Singleton<UpgradeDetector>::get();
}
void UpgradeDetector::CheckForUpgrade() {
method_factory_.RevokeAll();
Task* callback_task =
method_factory_.NewRunnableMethod(&UpgradeDetector::UpgradeDetected);
// We use FILE as the thread to run the upgrade detection code on all
// platforms. For Linux, this is because we don't want to block the UI thread
// while launching a background process and reading its output; on the Mac and
// on Windows checking for an upgrade requires reading a file.
BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
new DetectUpgradeTask(callback_task));
}
void UpgradeDetector::UpgradeDetected() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Stop the recurring timer (that is checking for changes).
detect_upgrade_timer_.Stop();
NotificationService::current()->Notify(
NotificationType::UPGRADE_DETECTED,
Source<UpgradeDetector>(this),
NotificationService::NoDetails());
// Start the OneShot timer for notifying the user after a certain period.
upgrade_notification_timer_.Start(
base::TimeDelta::FromMilliseconds(kNotifyUserAfterMs),
this, &UpgradeDetector::NotifyOnUpgrade);
}
void UpgradeDetector::NotifyOnUpgrade() {
notify_upgrade_ = true;
NotificationService::current()->Notify(
NotificationType::UPGRADE_RECOMMENDED,
Source<UpgradeDetector>(this),
NotificationService::NoDetails());
}
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