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// Copyright 2013 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/prefs/pref_metrics_service.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/metrics/histogram.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/pref_service.h"
#include "base/strings/string_number_conversions.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/browser_shutdown.h"
#include "chrome/browser/prefs/pref_service_syncable.h"
#include "chrome/browser/prefs/session_startup_pref.h"
#include "chrome/browser/prefs/synced_pref_change_registrar.h"
#include "chrome/browser/profiles/incognito_helpers.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search_engines/template_url_prepopulate_data.h"
#include "chrome/browser/ui/tabs/pinned_tab_codec.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/keyed_service/content/browser_context_dependency_manager.h"
#include "components/rappor/rappor_service.h"
#include "crypto/hmac.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
namespace {
const int kSessionStartupPrefValueMax = SessionStartupPref::kPrefValueMax;
} // namespace
PrefMetricsService::PrefMetricsService(Profile* profile)
: profile_(profile),
prefs_(profile_->GetPrefs()),
local_state_(g_browser_process->local_state()),
weak_factory_(this) {
RecordLaunchPrefs();
PrefServiceSyncable* prefs = PrefServiceSyncable::FromProfile(profile_);
synced_pref_change_registrar_.reset(new SyncedPrefChangeRegistrar(prefs));
RegisterSyncedPrefObservers();
}
// For unit testing only.
PrefMetricsService::PrefMetricsService(Profile* profile,
PrefService* local_state)
: profile_(profile),
prefs_(profile->GetPrefs()),
local_state_(local_state),
weak_factory_(this) {
}
PrefMetricsService::~PrefMetricsService() {
}
void PrefMetricsService::RecordLaunchPrefs() {
bool show_home_button = prefs_->GetBoolean(prefs::kShowHomeButton);
bool home_page_is_ntp = prefs_->GetBoolean(prefs::kHomePageIsNewTabPage);
UMA_HISTOGRAM_BOOLEAN("Settings.ShowHomeButton", show_home_button);
if (show_home_button) {
UMA_HISTOGRAM_BOOLEAN("Settings.GivenShowHomeButton_HomePageIsNewTabPage",
home_page_is_ntp);
}
// For non-NTP homepages, see if the URL comes from the same TLD+1 as a known
// search engine. Note that this is only an approximation of search engine
// use, due to both false negatives (pages that come from unknown TLD+1 X but
// consist of a search box that sends to known TLD+1 Y) and false positives
// (pages that share a TLD+1 with a known engine but aren't actually search
// pages, e.g. plus.google.com). Additionally, record the TLD+1 of non-NTP
// homepages through the privacy-preserving Rappor service.
if (!home_page_is_ntp) {
GURL homepage_url(prefs_->GetString(prefs::kHomePage));
if (homepage_url.is_valid()) {
UMA_HISTOGRAM_ENUMERATION(
"Settings.HomePageEngineType",
TemplateURLPrepopulateData::GetEngineType(homepage_url),
SEARCH_ENGINE_MAX);
if (g_browser_process->rappor_service()) {
g_browser_process->rappor_service()->RecordSample(
"Settings.HomePage",
rappor::ETLD_PLUS_ONE_RAPPOR_TYPE,
net::registry_controlled_domains::GetDomainAndRegistry(homepage_url,
net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES));
}
}
}
int restore_on_startup = prefs_->GetInteger(prefs::kRestoreOnStartup);
UMA_HISTOGRAM_ENUMERATION("Settings.StartupPageLoadSettings",
restore_on_startup, kSessionStartupPrefValueMax);
if (restore_on_startup == SessionStartupPref::kPrefValueURLs) {
const base::ListValue* url_list =
prefs_->GetList(prefs::kURLsToRestoreOnStartup);
UMA_HISTOGRAM_CUSTOM_COUNTS("Settings.StartupPageLoadURLs",
url_list->GetSize(), 1, 50, 20);
// Similarly, check startup pages for known search engine TLD+1s.
std::string url_text;
for (size_t i = 0; i < url_list->GetSize(); ++i) {
if (url_list->GetString(i, &url_text)) {
GURL start_url(url_text);
if (start_url.is_valid()) {
UMA_HISTOGRAM_ENUMERATION(
"Settings.StartupPageEngineTypes",
TemplateURLPrepopulateData::GetEngineType(start_url),
SEARCH_ENGINE_MAX);
}
}
}
}
#if !defined(OS_ANDROID)
StartupTabs startup_tabs = PinnedTabCodec::ReadPinnedTabs(profile_);
UMA_HISTOGRAM_CUSTOM_COUNTS("Settings.PinnedTabs",
startup_tabs.size(), 1, 50, 20);
for (size_t i = 0; i < startup_tabs.size(); ++i) {
GURL start_url(startup_tabs.at(i).url);
if (start_url.is_valid()) {
UMA_HISTOGRAM_ENUMERATION(
"Settings.PinnedTabEngineTypes",
TemplateURLPrepopulateData::GetEngineType(start_url),
SEARCH_ENGINE_MAX);
}
}
#endif
}
void PrefMetricsService::RegisterSyncedPrefObservers() {
LogHistogramValueCallback booleanHandler = base::Bind(
&PrefMetricsService::LogBooleanPrefChange, base::Unretained(this));
AddPrefObserver(prefs::kShowHomeButton, "ShowHomeButton", booleanHandler);
AddPrefObserver(prefs::kHomePageIsNewTabPage, "HomePageIsNewTabPage",
booleanHandler);
AddPrefObserver(prefs::kRestoreOnStartup, "StartupPageLoadSettings",
base::Bind(&PrefMetricsService::LogIntegerPrefChange,
base::Unretained(this),
kSessionStartupPrefValueMax));
}
void PrefMetricsService::AddPrefObserver(
const std::string& path,
const std::string& histogram_name_prefix,
const LogHistogramValueCallback& callback) {
synced_pref_change_registrar_->Add(path.c_str(),
base::Bind(&PrefMetricsService::OnPrefChanged,
base::Unretained(this),
histogram_name_prefix, callback));
}
void PrefMetricsService::OnPrefChanged(
const std::string& histogram_name_prefix,
const LogHistogramValueCallback& callback,
const std::string& path,
bool from_sync) {
PrefServiceSyncable* prefs = PrefServiceSyncable::FromProfile(profile_);
const PrefService::Preference* pref = prefs->FindPreference(path.c_str());
DCHECK(pref);
std::string source_name(
from_sync ? ".PulledFromSync" : ".PushedToSync");
std::string histogram_name("Settings." + histogram_name_prefix + source_name);
callback.Run(histogram_name, pref->GetValue());
};
void PrefMetricsService::LogBooleanPrefChange(const std::string& histogram_name,
const base::Value* value) {
bool boolean_value = false;
if (!value->GetAsBoolean(&boolean_value))
return;
base::HistogramBase* histogram = base::BooleanHistogram::FactoryGet(
histogram_name, base::HistogramBase::kUmaTargetedHistogramFlag);
histogram->Add(boolean_value);
}
void PrefMetricsService::LogIntegerPrefChange(int boundary_value,
const std::string& histogram_name,
const base::Value* value) {
int integer_value = 0;
if (!value->GetAsInteger(&integer_value))
return;
base::HistogramBase* histogram = base::LinearHistogram::FactoryGet(
histogram_name,
1,
boundary_value,
boundary_value + 1,
base::HistogramBase::kUmaTargetedHistogramFlag);
histogram->Add(integer_value);
}
// static
PrefMetricsService::Factory* PrefMetricsService::Factory::GetInstance() {
return Singleton<PrefMetricsService::Factory>::get();
}
// static
PrefMetricsService* PrefMetricsService::Factory::GetForProfile(
Profile* profile) {
return static_cast<PrefMetricsService*>(
GetInstance()->GetServiceForBrowserContext(profile, true));
}
PrefMetricsService::Factory::Factory()
: BrowserContextKeyedServiceFactory(
"PrefMetricsService",
BrowserContextDependencyManager::GetInstance()) {
}
PrefMetricsService::Factory::~Factory() {
}
KeyedService* PrefMetricsService::Factory::BuildServiceInstanceFor(
content::BrowserContext* profile) const {
return new PrefMetricsService(static_cast<Profile*>(profile));
}
bool PrefMetricsService::Factory::ServiceIsCreatedWithBrowserContext() const {
return true;
}
bool PrefMetricsService::Factory::ServiceIsNULLWhileTesting() const {
return false;
}
content::BrowserContext* PrefMetricsService::Factory::GetBrowserContextToUse(
content::BrowserContext* context) const {
return chrome::GetBrowserContextRedirectedInIncognito(context);
}
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