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// Copyright 2014 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/supervised_user/supervised_user_pref_store.h"
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/values.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/prefs/incognito_mode_prefs.h"
#include "chrome/browser/supervised_user/supervised_user_bookmarks_handler.h"
#include "chrome/browser/supervised_user/supervised_user_constants.h"
#include "chrome/browser/supervised_user/supervised_user_settings_service.h"
#include "chrome/browser/supervised_user/supervised_user_url_filter.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/bookmarks/common/bookmark_pref_names.h"
#include "components/prefs/pref_value_map.h"
#include "components/signin/core/common/signin_pref_names.h"
#include "content/public/browser/notification_source.h"
namespace {
struct SupervisedUserSettingsPrefMappingEntry {
const char* settings_name;
const char* pref_name;
};
SupervisedUserSettingsPrefMappingEntry kSupervisedUserSettingsPrefMapping[] = {
{
supervised_users::kContentPackDefaultFilteringBehavior,
prefs::kDefaultSupervisedUserFilteringBehavior,
},
{
supervised_users::kContentPackManualBehaviorHosts,
prefs::kSupervisedUserManualHosts,
},
{
supervised_users::kContentPackManualBehaviorURLs,
prefs::kSupervisedUserManualURLs,
},
{
supervised_users::kForceSafeSearch, prefs::kForceGoogleSafeSearch,
},
{
supervised_users::kForceSafeSearch, prefs::kForceYouTubeSafetyMode,
},
{
supervised_users::kRecordHistory, prefs::kRecordHistory,
},
{
supervised_users::kSafeSitesEnabled, prefs::kSupervisedUserSafeSites,
},
{
supervised_users::kSigninAllowed, prefs::kSigninAllowed,
},
{
supervised_users::kUserName, prefs::kProfileName,
},
};
} // namespace
SupervisedUserPrefStore::SupervisedUserPrefStore(
SupervisedUserSettingsService* supervised_user_settings_service) {
user_settings_subscription_ = supervised_user_settings_service->Subscribe(
base::Bind(&SupervisedUserPrefStore::OnNewSettingsAvailable,
base::Unretained(this)));
// Should only be nullptr in unit tests
// TODO(peconn): Remove this once SupervisedUserPrefStore is (partially at
// least) a KeyedService. The user_settings_subscription_ must be reset or
// destroyed before the SupervisedUserSettingsService is.
if (supervised_user_settings_service->GetProfile() != nullptr){
unsubscriber_registrar_.Add(this, chrome::NOTIFICATION_PROFILE_DESTROYED,
content::Source<Profile>(
supervised_user_settings_service->GetProfile()));
}
}
bool SupervisedUserPrefStore::GetValue(const std::string& key,
const base::Value** value) const {
// TODO(bauerb): Temporary CHECK to force a clean crash while investigating
// https://crbug.com/425785. Remove (or change back to DCHECK) once the bug
// is fixed.
CHECK(prefs_);
return prefs_->GetValue(key, value);
}
void SupervisedUserPrefStore::AddObserver(PrefStore::Observer* observer) {
observers_.AddObserver(observer);
}
void SupervisedUserPrefStore::RemoveObserver(PrefStore::Observer* observer) {
observers_.RemoveObserver(observer);
}
bool SupervisedUserPrefStore::HasObservers() const {
return observers_.might_have_observers();
}
bool SupervisedUserPrefStore::IsInitializationComplete() const {
return !!prefs_;
}
SupervisedUserPrefStore::~SupervisedUserPrefStore() {
}
void SupervisedUserPrefStore::OnNewSettingsAvailable(
const base::DictionaryValue* settings) {
scoped_ptr<PrefValueMap> old_prefs = std::move(prefs_);
prefs_.reset(new PrefValueMap);
if (settings) {
// Set hardcoded prefs and defaults.
prefs_->SetBoolean(prefs::kAllowDeletingBrowserHistory, false);
prefs_->SetInteger(prefs::kDefaultSupervisedUserFilteringBehavior,
SupervisedUserURLFilter::ALLOW);
prefs_->SetBoolean(prefs::kForceGoogleSafeSearch, true);
prefs_->SetBoolean(prefs::kForceYouTubeSafetyMode, true);
prefs_->SetBoolean(prefs::kHideWebStoreIcon, true);
prefs_->SetInteger(prefs::kIncognitoModeAvailability,
IncognitoModePrefs::DISABLED);
prefs_->SetBoolean(prefs::kRecordHistory, true);
prefs_->SetBoolean(prefs::kSigninAllowed, false);
// Copy supervised user settings to prefs.
for (const auto& entry : kSupervisedUserSettingsPrefMapping) {
const base::Value* value = NULL;
if (settings->GetWithoutPathExpansion(entry.settings_name, &value))
prefs_->SetValue(entry.pref_name, value->CreateDeepCopy());
}
// Manually set preferences that aren't direct copies of the settings value.
bool record_history;
if (settings->GetBoolean(supervised_users::kRecordHistory,
&record_history)) {
prefs_->SetBoolean(prefs::kAllowDeletingBrowserHistory, !record_history);
prefs_->SetInteger(prefs::kIncognitoModeAvailability,
record_history ? IncognitoModePrefs::DISABLED
: IncognitoModePrefs::ENABLED);
}
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableSupervisedUserManagedBookmarksFolder)) {
// Reconstruct bookmarks from split settings.
prefs_->SetValue(
bookmarks::prefs::kSupervisedBookmarks,
SupervisedUserBookmarksHandler::BuildBookmarksTree(*settings));
}
}
if (!old_prefs) {
FOR_EACH_OBSERVER(Observer, observers_, OnInitializationCompleted(true));
return;
}
std::vector<std::string> changed_prefs;
prefs_->GetDifferingKeys(old_prefs.get(), &changed_prefs);
// Send out change notifications.
for (const std::string& pref : changed_prefs) {
FOR_EACH_OBSERVER(Observer, observers_, OnPrefValueChanged(pref));
}
}
// Callback to unsubscribe from the supervised user settings service.
void SupervisedUserPrefStore::Observe(
int type,
const content::NotificationSource& src,
const content::NotificationDetails& details) {
DCHECK_EQ(chrome::NOTIFICATION_PROFILE_DESTROYED, type);
user_settings_subscription_.reset();
}
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