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// Copyright (c) 2011 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/policy/cloud_policy_subsystem.h"
#include <algorithm>
#include <string>
#include "base/command_line.h"
#include "chrome/browser/policy/cloud_policy_cache_base.h"
#include "chrome/browser/policy/cloud_policy_controller.h"
#include "chrome/browser/policy/cloud_policy_identity_strategy.h"
#include "chrome/browser/policy/configuration_policy_provider.h"
#include "chrome/browser/policy/device_management_service.h"
#include "chrome/browser/policy/device_token_fetcher.h"
#include "chrome/browser/policy/policy_notifier.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "content/common/notification_details.h"
#include "content/common/notification_source.h"
#include "content/common/notification_type.h"
namespace {
// Default refresh rate.
const int kDefaultPolicyRefreshRateMs = 3 * 60 * 60 * 1000; // 3 hours.
// Refresh rate sanity interval bounds.
const int64 kPolicyRefreshRateMinMs = 30 * 60 * 1000; // 30 minutes
const int64 kPolicyRefreshRateMaxMs = 24 * 60 * 60 * 1000; // 1 day
} // namespace
namespace policy {
CloudPolicySubsystem::ObserverRegistrar::ObserverRegistrar(
CloudPolicySubsystem* cloud_policy_subsystem,
CloudPolicySubsystem::Observer* observer)
: observer_(observer) {
policy_notifier_ = cloud_policy_subsystem->notifier();
policy_notifier_->AddObserver(observer);
}
CloudPolicySubsystem::ObserverRegistrar::~ObserverRegistrar() {
if (policy_notifier_)
policy_notifier_->RemoveObserver(observer_);
}
CloudPolicySubsystem::CloudPolicySubsystem(
CloudPolicyIdentityStrategy* identity_strategy,
CloudPolicyCacheBase* policy_cache)
: prefs_(NULL) {
net::NetworkChangeNotifier::AddIPAddressObserver(this);
notifier_.reset(new PolicyNotifier());
CommandLine* command_line = CommandLine::ForCurrentProcess();
if (command_line->HasSwitch(switches::kDeviceManagementUrl)) {
device_management_service_.reset(new DeviceManagementService(
command_line->GetSwitchValueASCII(switches::kDeviceManagementUrl)));
cloud_policy_cache_.reset(policy_cache);
cloud_policy_cache_->set_policy_notifier(notifier_.get());
cloud_policy_cache_->Load();
device_token_fetcher_.reset(
new DeviceTokenFetcher(device_management_service_.get(),
cloud_policy_cache_.get(),
notifier_.get()));
cloud_policy_controller_.reset(
new CloudPolicyController(device_management_service_.get(),
cloud_policy_cache_.get(),
device_token_fetcher_.get(),
identity_strategy,
notifier_.get()));
}
}
CloudPolicySubsystem::~CloudPolicySubsystem() {
DCHECK(!prefs_);
cloud_policy_controller_.reset();
device_token_fetcher_.reset();
cloud_policy_cache_.reset();
device_management_service_.reset();
net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
}
void CloudPolicySubsystem::OnIPAddressChanged() {
if (state() == CloudPolicySubsystem::NETWORK_ERROR &&
cloud_policy_controller_.get()) {
cloud_policy_controller_->Retry();
}
}
void CloudPolicySubsystem::Initialize(
PrefService* prefs,
net::URLRequestContextGetter* request_context) {
DCHECK(!prefs_);
prefs_ = prefs;
if (device_management_service_.get())
device_management_service_->Initialize(request_context);
policy_refresh_rate_.Init(prefs::kPolicyRefreshRate, prefs_, this);
UpdatePolicyRefreshRate();
}
void CloudPolicySubsystem::Shutdown() {
if (device_management_service_.get())
device_management_service_->Shutdown();
cloud_policy_controller_.reset();
cloud_policy_cache_.reset();
policy_refresh_rate_.Destroy();
prefs_ = NULL;
}
CloudPolicySubsystem::PolicySubsystemState CloudPolicySubsystem::state() {
return notifier_->state();
}
CloudPolicySubsystem::ErrorDetails CloudPolicySubsystem::error_details() {
return notifier_->error_details();
}
void CloudPolicySubsystem::StopAutoRetry() {
cloud_policy_controller_->StopAutoRetry();
device_token_fetcher_->StopAutoRetry();
}
ConfigurationPolicyProvider* CloudPolicySubsystem::GetManagedPolicyProvider() {
if (cloud_policy_cache_.get())
return cloud_policy_cache_->GetManagedPolicyProvider();
return NULL;
}
ConfigurationPolicyProvider*
CloudPolicySubsystem::GetRecommendedPolicyProvider() {
if (cloud_policy_cache_.get())
return cloud_policy_cache_->GetRecommendedPolicyProvider();
return NULL;
}
// static
void CloudPolicySubsystem::RegisterPrefs(PrefService* pref_service) {
pref_service->RegisterIntegerPref(prefs::kPolicyRefreshRate,
kDefaultPolicyRefreshRateMs);
}
void CloudPolicySubsystem::UpdatePolicyRefreshRate() {
if (cloud_policy_controller_.get()) {
// Clamp to sane values.
int64 refresh_rate = policy_refresh_rate_.GetValue();
refresh_rate = std::max(kPolicyRefreshRateMinMs, refresh_rate);
refresh_rate = std::min(kPolicyRefreshRateMaxMs, refresh_rate);
cloud_policy_controller_->SetRefreshRate(refresh_rate);
}
}
void CloudPolicySubsystem::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
if (type == NotificationType::PREF_CHANGED &&
policy_refresh_rate_.GetPrefName() ==
*(Details<std::string>(details).ptr()) &&
prefs_ == Source<PrefService>(source).ptr()) {
UpdatePolicyRefreshRate();
} else {
NOTREACHED();
}
}
} // namespace policy
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