| // Copyright (c) 2017 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/chromeos/policy/minimum_version_policy_handler.h" |
| |
| #include "base/bind.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/version.h" |
| #include "chromeos/settings/cros_settings_names.h" |
| #include "chromeos/settings/cros_settings_provider.h" |
| #include "components/version_info/version_info.h" |
| |
| namespace policy { |
| |
| MinimumVersionPolicyHandler::MinimumVersionPolicyHandler( |
| chromeos::CrosSettings* cros_settings) |
| : cros_settings_(cros_settings), weak_factory_(this) { |
| policy_subscription_ = cros_settings_->AddSettingsObserver( |
| chromeos::kMinimumRequiredChromeVersion, |
| base::Bind(&MinimumVersionPolicyHandler::OnPolicyChanged, |
| weak_factory_.GetWeakPtr())); |
| // Fire it once so we're sure we get an invocation on startup. |
| OnPolicyChanged(); |
| } |
| |
| MinimumVersionPolicyHandler::~MinimumVersionPolicyHandler() = default; |
| |
| void MinimumVersionPolicyHandler::AddObserver(Observer* observer) { |
| observers_.AddObserver(observer); |
| } |
| |
| void MinimumVersionPolicyHandler::RemoveObserver(Observer* observer) { |
| observers_.RemoveObserver(observer); |
| } |
| |
| // static |
| bool MinimumVersionPolicyHandler::AreRequirementsSatisfied( |
| const std::string& min_chrome_version_string) { |
| if (min_chrome_version_string.empty()) |
| return true; |
| |
| const base::Version required_version(min_chrome_version_string); |
| if (!required_version.IsValid()) { |
| LOG(ERROR) << "Version supplied by policy is not a valid version " |
| << required_version; |
| return true; |
| } |
| |
| return version_info::GetVersion().CompareTo(required_version) >= 0; |
| } |
| |
| void MinimumVersionPolicyHandler::NotifyMinimumVersionStateChanged() { |
| for (auto& observer : observers_) |
| observer.OnMinimumVersionStateChanged(); |
| } |
| |
| void MinimumVersionPolicyHandler::OnPolicyChanged() { |
| chromeos::CrosSettingsProvider::TrustedStatus status = |
| cros_settings_->PrepareTrustedValues( |
| base::Bind(&MinimumVersionPolicyHandler::OnPolicyChanged, |
| weak_factory_.GetWeakPtr())); |
| if (status != chromeos::CrosSettingsProvider::TRUSTED) |
| return; |
| |
| std::string min_chrome_version_string; |
| cros_settings_->GetString(chromeos::kMinimumRequiredChromeVersion, |
| &min_chrome_version_string); |
| requirements_met_ = AreRequirementsSatisfied(min_chrome_version_string); |
| NotifyMinimumVersionStateChanged(); |
| } |
| |
| } // namespace policy |