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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/privacy_sandbox/tracking_protection_settings.h"
#include "base/check.h"
#include "base/feature_list.h"
#include "base/time/time.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/content_settings/core/common/content_settings.h"
#include "components/content_settings/core/common/content_settings_types.h"
#include "components/content_settings/core/common/features.h"
#include "components/content_settings/core/common/pref_names.h"
#include "components/policy/core/common/management/platform_management_service.h"
#include "components/prefs/pref_change_registrar.h"
#include "components/prefs/pref_service.h"
#include "components/privacy_sandbox/privacy_sandbox_features.h"
#include "components/privacy_sandbox/privacy_sandbox_prefs.h"
#include "components/privacy_sandbox/tracking_protection_prefs.h"
#include "components/privacy_sandbox/tracking_protection_settings_observer.h"
#include "net/base/features.h"
#include "url/gurl.h"
namespace privacy_sandbox {
TrackingProtectionSettings::TrackingProtectionSettings(
PrefService* pref_service,
HostContentSettingsMap* host_content_settings_map,
policy::ManagementService* management_service,
bool is_incognito)
: pref_service_(pref_service),
host_content_settings_map_(host_content_settings_map),
management_service_(management_service),
is_incognito_(is_incognito) {
CHECK(pref_service_);
CHECK(host_content_settings_map_);
pref_change_registrar_.Init(pref_service_);
pref_change_registrar_.Add(
prefs::kEnableDoNotTrack,
base::BindRepeating(
&TrackingProtectionSettings::OnDoNotTrackEnabledPrefChanged,
base::Unretained(this)));
pref_change_registrar_.Add(
prefs::kIpProtectionEnabled,
base::BindRepeating(
&TrackingProtectionSettings::OnIpProtectionPrefChanged,
base::Unretained(this)));
pref_change_registrar_.Add(
prefs::kFingerprintingProtectionEnabled,
base::BindRepeating(
&TrackingProtectionSettings::OnFpProtectionPrefChanged,
base::Unretained(this)));
pref_change_registrar_.Add(
prefs::kBlockAll3pcToggleEnabled,
base::BindRepeating(
&TrackingProtectionSettings::OnBlockAllThirdPartyCookiesPrefChanged,
base::Unretained(this)));
pref_change_registrar_.Add(
prefs::kTrackingProtection3pcdEnabled,
base::BindRepeating(
&TrackingProtectionSettings::OnTrackingProtection3pcdPrefChanged,
base::Unretained(this)));
// For enterprise status
pref_change_registrar_.Add(
prefs::kCookieControlsMode,
base::BindRepeating(
&TrackingProtectionSettings::OnEnterpriseControlForPrefsChanged,
base::Unretained(this)));
pref_change_registrar_.Add(
prefs::kPrivacySandboxRelatedWebsiteSetsEnabled,
base::BindRepeating(
&TrackingProtectionSettings::OnEnterpriseControlForPrefsChanged,
base::Unretained(this)));
// It's possible enterprise status changed while profile was shut down.
OnEnterpriseControlForPrefsChanged();
}
TrackingProtectionSettings::~TrackingProtectionSettings() = default;
void TrackingProtectionSettings::Shutdown() {
observers_.Clear();
host_content_settings_map_ = nullptr;
management_service_ = nullptr;
pref_change_registrar_.Reset();
pref_service_ = nullptr;
}
bool TrackingProtectionSettings::IsTrackingProtection3pcdEnabled() const {
// True if either debug flag or pref is enabled.
return base::FeatureList::IsEnabled(
content_settings::features::kTrackingProtection3pcd) ||
pref_service_->GetBoolean(prefs::kTrackingProtection3pcdEnabled);
}
bool TrackingProtectionSettings::AreAllThirdPartyCookiesBlocked() const {
return IsTrackingProtection3pcdEnabled() &&
(pref_service_->GetBoolean(prefs::kBlockAll3pcToggleEnabled) ||
is_incognito_);
}
bool TrackingProtectionSettings::IsIpProtectionEnabled() const {
return pref_service_->GetBoolean(prefs::kIpProtectionEnabled) &&
base::FeatureList::IsEnabled(kIpProtectionUx);
}
bool TrackingProtectionSettings::IsFpProtectionEnabled() const {
return pref_service_->GetBoolean(prefs::kFingerprintingProtectionEnabled) &&
is_incognito_ &&
base::FeatureList::IsEnabled(kFingerprintingProtectionUx);
}
bool TrackingProtectionSettings::IsDoNotTrackEnabled() const {
return pref_service_->GetBoolean(prefs::kEnableDoNotTrack);
}
void TrackingProtectionSettings::AddTrackingProtectionException(
const GURL& first_party_url) {
host_content_settings_map_->SetContentSettingCustomScope(
ContentSettingsPattern::Wildcard(),
ContentSettingsPattern::FromURLToSchemefulSitePattern(first_party_url),
ContentSettingsType::TRACKING_PROTECTION, CONTENT_SETTING_ALLOW);
}
void TrackingProtectionSettings::RemoveTrackingProtectionException(
const GURL& first_party_url) {
// Exceptions added via `AddTrackingProtectionException` are site scoped. This
// resets both origin scoped and site scoped exceptions.
auto pattern =
ContentSettingsPattern::FromURLToSchemefulSitePattern(first_party_url);
content_settings::SettingInfo info;
host_content_settings_map_->GetContentSetting(
GURL(), first_party_url, ContentSettingsType::TRACKING_PROTECTION, &info);
if (!info.secondary_pattern.HasDomainWildcard()) {
pattern = info.secondary_pattern;
}
host_content_settings_map_->SetContentSettingCustomScope(
ContentSettingsPattern::Wildcard(), pattern,
ContentSettingsType::TRACKING_PROTECTION, CONTENT_SETTING_DEFAULT);
}
bool TrackingProtectionSettings::HasTrackingProtectionException(
const GURL& first_party_url,
content_settings::SettingInfo* info) const {
return host_content_settings_map_->GetContentSetting(
GURL(), first_party_url, ContentSettingsType::TRACKING_PROTECTION,
info) == CONTENT_SETTING_ALLOW;
}
bool TrackingProtectionSettings::IsIpProtectionDisabledForEnterprise() {
if (pref_service_->IsManagedPreference(prefs::kIpProtectionEnabled)) {
return !pref_service_->GetBoolean(prefs::kIpProtectionEnabled);
}
if (net::features::kIpPrivacyDisableForEnterpriseByDefault.Get()) {
// Disable IP Protection for managed profiles and managed devices when the
// admins haven't explicitly opted in to it via enterprise policy.
return management_service_->IsManaged() ||
policy::PlatformManagementService::GetInstance()->IsManaged();
}
return false;
}
// TODO(https://b/333527273): Delete with Mode B cleanup
void TrackingProtectionSettings::OnEnterpriseControlForPrefsChanged() {
if (!IsTrackingProtection3pcdEnabled()) {
return;
}
// Stop showing users new UX and using new prefs if old prefs become managed.
if (pref_service_->IsManagedPreference(prefs::kCookieControlsMode) ||
pref_service_->IsManagedPreference(
prefs::kPrivacySandboxRelatedWebsiteSetsEnabled)) {
pref_service_->SetBoolean(prefs::kTrackingProtection3pcdEnabled, false);
}
}
void TrackingProtectionSettings::OnDoNotTrackEnabledPrefChanged() {
for (auto& observer : observers_) {
observer.OnDoNotTrackEnabledChanged();
}
}
void TrackingProtectionSettings::OnIpProtectionPrefChanged() {
for (auto& observer : observers_) {
observer.OnIpProtectionEnabledChanged();
}
}
void TrackingProtectionSettings::OnFpProtectionPrefChanged() {
for (auto& observer : observers_) {
observer.OnFpProtectionEnabledChanged();
}
}
void TrackingProtectionSettings::OnBlockAllThirdPartyCookiesPrefChanged() {
for (auto& observer : observers_) {
observer.OnBlockAllThirdPartyCookiesChanged();
}
}
void TrackingProtectionSettings::OnTrackingProtection3pcdPrefChanged() {
for (auto& observer : observers_) {
observer.OnTrackingProtection3pcdChanged();
// 3PC blocking may change as a result of entering/leaving the experiment.
observer.OnBlockAllThirdPartyCookiesChanged();
}
}
void TrackingProtectionSettings::AddObserver(
TrackingProtectionSettingsObserver* observer) {
observers_.AddObserver(observer);
}
void TrackingProtectionSettings::RemoveObserver(
TrackingProtectionSettingsObserver* observer) {
observers_.RemoveObserver(observer);
}
} // namespace privacy_sandbox
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