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privacy_sandbox_settings_impl.cc
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// Copyright 2020 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/privacy_sandbox_settings_impl.h"
#include <cstddef>
#include <vector>
#include "base/containers/contains.h"
#include "base/feature_list.h"
#include "base/json/values_util.h"
#include "base/metrics/field_trial_params.h"
#include "base/metrics/histogram_functions.h"
#include "base/observer_list.h"
#include "base/ranges/algorithm.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/time/time.h"
#include "base/values.h"
#include "components/browsing_topics/common/common_types.h"
#include "components/browsing_topics/common/semantic_tree.h"
#include "components/content_settings/core/browser/cookie_settings.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/content_settings/core/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "components/privacy_sandbox/privacy_sandbox_features.h"
#include "components/privacy_sandbox/privacy_sandbox_prefs.h"
#include "content/public/common/content_features.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/cookies/site_for_cookies.h"
#include "third_party/blink/public/common/features.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace privacy_sandbox {
namespace {
constexpr char kBlockedTopicsTopicKey[] = "topic";
constexpr char kBlockedTopicsBlockTimeKey[] = "blockedOn";
bool IsCookiesClearOnExitEnabled(HostContentSettingsMap* map) {
return map->GetDefaultContentSetting(ContentSettingsType::COOKIES,
/*provider_id=*/nullptr) ==
ContentSetting::CONTENT_SETTING_SESSION_ONLY;
}
// Convert a stored FLEDGE block eTLD+1 into applicable content settings
// patterns. This ensures that if Public Suffix List membership changes, the
// stored item continues to match as when it was set. Multiple patterns are set
// to support IP address fallbacks, which do not support [*.] prefixes.
// TODO (crbug.com/1287153): This is somewhat hacky and can be removed when
// FLEDGE is controlled by a content setting directly.
std::vector<ContentSettingsPattern> FledgeBlockToContentSettingsPatterns(
const std::string& entry) {
return {ContentSettingsPattern::FromString("[*.]" + entry),
ContentSettingsPattern::FromString(entry)};
}
// Returns a base::Value::Dict for storage in prefs that represents |topic|
// blocked at the current time.
base::Value::Dict CreateBlockedTopicEntry(const CanonicalTopic& topic) {
return base::Value::Dict()
.Set(kBlockedTopicsTopicKey, topic.ToValue())
.Set(kBlockedTopicsBlockTimeKey, base::TimeToValue(base::Time::Now()));
}
} // namespace
// static
bool PrivacySandboxSettingsImpl::IsAllowed(Status status) {
return status == Status::kAllowed;
}
PrivacySandboxSettingsImpl::PrivacySandboxSettingsImpl(
std::unique_ptr<Delegate> delegate,
HostContentSettingsMap* host_content_settings_map,
scoped_refptr<content_settings::CookieSettings> cookie_settings,
PrefService* pref_service)
: delegate_(std::move(delegate)),
host_content_settings_map_(host_content_settings_map),
cookie_settings_(cookie_settings),
pref_service_(pref_service),
attestations_({}) {
DCHECK(pref_service_);
DCHECK(host_content_settings_map_);
DCHECK(cookie_settings_);
// "Clear on exit" causes a cookie deletion on shutdown. But for practical
// purposes, we're notifying the observers on startup (which should be
// equivalent, as no cookie operations could have happened while the profile
// was shut down).
if (IsCookiesClearOnExitEnabled(host_content_settings_map_)) {
OnCookiesCleared();
}
pref_change_registrar_.Init(pref_service_);
pref_change_registrar_.Add(
prefs::kPrivacySandboxFirstPartySetsEnabled,
base::BindRepeating(
&PrivacySandboxSettingsImpl::OnFirstPartySetsEnabledPrefChanged,
base::Unretained(this)));
}
PrivacySandboxSettingsImpl::~PrivacySandboxSettingsImpl() = default;
PrivacySandboxSettingsImpl::Status
PrivacySandboxSettingsImpl::GetM1TopicAllowedStatus() const {
auto control_status = GetM1PrivacySandboxApiEnabledStatus(
prefs::kPrivacySandboxM1TopicsEnabled);
auto has_appropriate_consent = delegate_->HasAppropriateTopicsConsent();
// If `control_status` indicates that Topics is allowed, then
// `has_appropriate_consent` should be true, as there is no pathway for a user
// to enable Topics controls without also granting consent. The inverse does
// not hold, as an extension or policy may disable Topics, without necessarily
// revoking user consent.
if (control_status == Status::kAllowed && !has_appropriate_consent) {
// This status will be recorded via UMA, and is indicative of an error.
return Status::kMismatchedConsent;
}
return control_status;
}
const std::vector<browsing_topics::Topic>&
PrivacySandboxSettingsImpl::GetFinchDisabledTopics() {
if (finch_disabled_topics_.size() > 0) {
return finch_disabled_topics_;
}
std::string disabled_topics_string =
blink::features::kBrowsingTopicsDisabledTopicsList.Get();
if (disabled_topics_string.empty()) {
return finch_disabled_topics_;
}
std::vector<std::string> tokens = base::SplitString(
disabled_topics_string, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
for (const std::string& token : tokens) {
int disabled_topic_id;
CHECK(base::StringToInt(token, &disabled_topic_id));
finch_disabled_topics_.emplace_back(disabled_topic_id);
}
return finch_disabled_topics_;
}
bool PrivacySandboxSettingsImpl::IsTopicsAllowed() const {
// M1 specific
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status = GetM1TopicAllowedStatus();
base::UmaHistogramEnumeration("PrivacySandbox.IsTopicsAllowed", status);
return IsAllowed(status);
}
// Topics API calculation should be prevented if the user has blocked 3PC
// cookies, as there will be no context specific check.
const auto cookie_controls_mode =
static_cast<content_settings::CookieControlsMode>(
pref_service_->GetInteger(prefs::kCookieControlsMode));
const auto default_content_setting =
cookie_settings_->GetDefaultCookieSetting(/*provider_id=*/nullptr);
const bool third_party_cookies_blocked =
default_content_setting == ContentSetting::CONTENT_SETTING_BLOCK ||
cookie_controls_mode ==
content_settings::CookieControlsMode::kBlockThirdParty;
return IsPrivacySandboxEnabled() && !third_party_cookies_blocked;
}
bool PrivacySandboxSettingsImpl::IsTopicsAllowedForContext(
const url::Origin& top_frame_origin,
const GURL& url) const {
// Check for attestation on the calling context's site.
if (!attestations_.IsSiteAttested(
net::SchemefulSite(url),
PrivacySandboxAttestationsGatedAPI::kTopics)) {
base::UmaHistogramEnumeration("PrivacySandbox.IsTopicsAllowedForContext",
Status::kAttestationFailed);
return false;
}
// M1 specific
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status = GetM1TopicAllowedStatus();
if (IsAllowed(status)) {
status = GetSiteAccessAllowedStatus(top_frame_origin, url);
}
base::UmaHistogramEnumeration("PrivacySandbox.IsTopicsAllowedForContext",
status);
return IsAllowed(status);
}
// If the Topics API is disabled completely, it is not available in any
// context.
return IsTopicsAllowed() &&
IsPrivacySandboxEnabledForContext(top_frame_origin, url);
}
bool PrivacySandboxSettingsImpl::IsTopicAllowed(const CanonicalTopic& topic) {
const auto& blocked_topics =
pref_service_->GetList(prefs::kPrivacySandboxBlockedTopics);
std::vector<browsing_topics::Topic> ancestor_topics =
browsing_topics::SemanticTree().GetAncestorTopics(topic.topic_id());
for (const base::Value& item : blocked_topics) {
auto blocked_topic =
CanonicalTopic::FromValue(*item.GetDict().Find(kBlockedTopicsTopicKey));
if (!blocked_topic) {
continue;
}
if ((topic.topic_id() == blocked_topic->topic_id()) ||
(base::Contains(ancestor_topics, blocked_topic->topic_id()))) {
return false;
}
}
for (browsing_topics::Topic blocked_topic_id : GetFinchDisabledTopics()) {
if ((topic.topic_id() == blocked_topic_id) ||
(base::Contains(ancestor_topics, blocked_topic_id))) {
return false;
}
}
return true;
}
void PrivacySandboxSettingsImpl::SetTopicAllowed(const CanonicalTopic& topic,
bool allowed) {
ScopedListPrefUpdate scoped_pref_update(pref_service_,
prefs::kPrivacySandboxBlockedTopics);
// Presence in the preference list indicates that a topic is blocked, as
// there is no concept of explicitly allowed topics. Thus, allowing a topic
// is the same as removing it, if it exists, from the blocklist. Blocking
// a topic is the same as adding it to the blocklist, but as duplicate entries
// are undesireable, removing any existing reference first is desireable.
// Thus, regardless of |allowed|, removing any existing reference is the
// first step.
scoped_pref_update->EraseIf([&](const base::Value& value) {
auto* blocked_topic_value = value.GetDict().Find(kBlockedTopicsTopicKey);
auto converted_topic = CanonicalTopic::FromValue(*blocked_topic_value);
return converted_topic && *converted_topic == topic;
});
// If the topic is being blocked, it can be (re)added to the blocklist. If the
// topic was removed from the blocklist above, this is equivalent to updating
// the modified time associated with the entry to the current time. As data
// deletions are typically from the current time backwards, this makes it
// more likely to be removed - a privacy improvement.
if (!allowed) {
scoped_pref_update->Append(CreateBlockedTopicEntry(topic));
}
}
void PrivacySandboxSettingsImpl::ClearTopicSettings(base::Time start_time,
base::Time end_time) {
ScopedListPrefUpdate scoped_pref_update(pref_service_,
prefs::kPrivacySandboxBlockedTopics);
// Shortcut for maximum time range deletion.
if (start_time == base::Time() && end_time == base::Time::Max()) {
scoped_pref_update->clear();
return;
}
scoped_pref_update->EraseIf([&](const base::Value& value) {
auto blocked_time =
base::ValueToTime(value.GetDict().Find(kBlockedTopicsBlockTimeKey));
return start_time <= blocked_time && blocked_time <= end_time;
});
}
base::Time PrivacySandboxSettingsImpl::TopicsDataAccessibleSince() const {
return pref_service_->GetTime(
prefs::kPrivacySandboxTopicsDataAccessibleSince);
}
PrivacySandboxSettingsImpl::Status
PrivacySandboxSettingsImpl::GetM1AttributionReportingAllowedStatus(
const url::Origin& top_frame_origin,
const url::Origin& reporting_origin) const {
Status status = GetM1PrivacySandboxApiEnabledStatus(
prefs::kPrivacySandboxM1AdMeasurementEnabled);
if (!IsAllowed(status)) {
return status;
}
return GetSiteAccessAllowedStatus(top_frame_origin,
reporting_origin.GetURL());
}
bool PrivacySandboxSettingsImpl::IsAttributionReportingEverAllowed() const {
// M1 specific
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status = GetM1PrivacySandboxApiEnabledStatus(
prefs::kPrivacySandboxM1AdMeasurementEnabled);
base::UmaHistogramEnumeration(
"PrivacySandbox.IsAttributionReportingEverAllowed", status);
return IsAllowed(status);
}
return IsPrivacySandboxEnabled();
}
bool PrivacySandboxSettingsImpl::IsAttributionReportingAllowed(
const url::Origin& top_frame_origin,
const url::Origin& reporting_origin) const {
// M1 specific
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status = GetM1AttributionReportingAllowedStatus(top_frame_origin,
reporting_origin);
base::UmaHistogramEnumeration(
"PrivacySandbox.IsAttributionReportingAllowed", status);
return IsAllowed(status);
}
return IsPrivacySandboxEnabledForContext(top_frame_origin,
reporting_origin.GetURL());
}
bool PrivacySandboxSettingsImpl::MaySendAttributionReport(
const url::Origin& source_origin,
const url::Origin& destination_origin,
const url::Origin& reporting_origin) const {
// M1 specific
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status = GetM1AttributionReportingAllowedStatus(
/*top_frame_origin=*/source_origin,
/*reporting_origin=*/reporting_origin);
if (IsAllowed(status)) {
status = GetM1AttributionReportingAllowedStatus(
/*top_frame_origin=*/destination_origin,
/*reporting_origin=*/reporting_origin);
}
base::UmaHistogramEnumeration("PrivacySandbox.MaySendAttributionReport",
status);
return IsAllowed(status);
}
// The |reporting_origin| needs to have been accessible in both source
// and trigger contexts. These are both checked when they occur, but
// user settings may have changed between then and when the attribution report
// is sent.
return IsPrivacySandboxEnabledForContext(/*top_frame_origin=*/source_origin,
reporting_origin.GetURL()) &&
IsPrivacySandboxEnabledForContext(
/*top_frame_origin=*/destination_origin,
reporting_origin.GetURL());
}
void PrivacySandboxSettingsImpl::SetFledgeJoiningAllowed(
const std::string& top_frame_etld_plus1,
bool allowed) {
ScopedDictPrefUpdate scoped_pref_update(
pref_service_, prefs::kPrivacySandboxFledgeJoinBlocked);
// Ensure that the provided etld_plus1 actually is an etld+1.
auto effective_top_frame_etld_plus1 =
net::registry_controlled_domains::GetDomainAndRegistry(
top_frame_etld_plus1,
net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
// Hosts are also accepted as a fallback. This may occur if the private
// registry has changed, and what the caller may be assuming is an eTLD+1 no
// longer is. Simply ignoring non-eTLD+1's may thus result in unexpected
// access.
if (effective_top_frame_etld_plus1 != top_frame_etld_plus1) {
// Add a dummy scheme and use GURL to confirm the provided string is a valid
// host.
const GURL url("https://" + top_frame_etld_plus1);
effective_top_frame_etld_plus1 = url.host();
}
// Ignore attempts to configure an empty etld+1. This will also catch the
// case where the eTLD+1 was not even a host, as GURL will have canonicalised
// it to empty.
if (effective_top_frame_etld_plus1.length() == 0) {
NOTREACHED() << "Cannot control FLEDGE joining for empty eTLD+1";
return;
}
if (allowed) {
// Existence of the key implies blocking, so simply removing the key is
// sufficient. If the key wasn't already present, the following is a no-op.
scoped_pref_update->Remove(effective_top_frame_etld_plus1);
} else {
// Overriding the creation date for keys which already exist is acceptable.
// Time range based deletions are typically started from the current time,
// and so this will be more aggressively removed. This decreases the chance
// a potentially sensitive website remains in preferences.
scoped_pref_update->Set(effective_top_frame_etld_plus1,
base::TimeToValue(base::Time::Now()));
}
}
void PrivacySandboxSettingsImpl::ClearFledgeJoiningAllowedSettings(
base::Time start_time,
base::Time end_time) {
ScopedDictPrefUpdate scoped_pref_update(
pref_service_, prefs::kPrivacySandboxFledgeJoinBlocked);
auto& pref_data = scoped_pref_update.Get();
// Shortcut for maximum time range deletion
if (start_time == base::Time() && end_time == base::Time::Max()) {
pref_data.clear();
return;
}
std::vector<std::string> keys_to_remove;
for (auto entry : pref_data) {
absl::optional<base::Time> created_time = base::ValueToTime(entry.second);
if (created_time.has_value() && start_time <= created_time &&
created_time <= end_time) {
keys_to_remove.push_back(entry.first);
}
}
for (const auto& key : keys_to_remove) {
pref_data.Remove(key);
}
}
bool PrivacySandboxSettingsImpl::IsFledgeJoiningAllowed(
const url::Origin& top_frame_origin) const {
ScopedDictPrefUpdate scoped_pref_update(
pref_service_, prefs::kPrivacySandboxFledgeJoinBlocked);
auto& pref_data = scoped_pref_update.Get();
for (auto entry : pref_data) {
if (base::ranges::any_of(FledgeBlockToContentSettingsPatterns(entry.first),
[&](const auto& pattern) {
return pattern.Matches(
top_frame_origin.GetURL());
})) {
return false;
}
}
return true;
}
PrivacySandboxSettingsImpl::Status
PrivacySandboxSettingsImpl::GetM1FledgeAllowedStatus(
const url::Origin& top_frame_origin,
const url::Origin& auction_party) const {
Status status = GetM1PrivacySandboxApiEnabledStatus(
prefs::kPrivacySandboxM1FledgeEnabled);
if (!IsAllowed(status)) {
return status;
}
return GetSiteAccessAllowedStatus(top_frame_origin, auction_party.GetURL());
}
bool PrivacySandboxSettingsImpl::IsFledgeAllowed(
const url::Origin& top_frame_origin,
const url::Origin& auction_party) const {
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status = GetM1FledgeAllowedStatus(top_frame_origin, auction_party);
base::UmaHistogramEnumeration("PrivacySandbox.IsFledgeAllowed", status);
return IsAllowed(status);
}
return IsPrivacySandboxEnabledForContext(top_frame_origin,
auction_party.GetURL());
}
bool PrivacySandboxSettingsImpl::IsSharedStorageAllowed(
const url::Origin& top_frame_origin,
const url::Origin& accessing_origin) const {
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status = GetPrivacySandboxAllowedStatus();
if (IsAllowed(status)) {
status = GetSiteAccessAllowedStatus(top_frame_origin,
accessing_origin.GetURL());
}
base::UmaHistogramEnumeration("PrivacySandbox.IsSharedStorageAllowed",
status);
return IsAllowed(status);
}
// Ensures that Shared Storage is only allowed if both Privacy Sandbox is
// enabled and full cookie access is enabled for this context.
return IsPrivacySandboxEnabledForContext(top_frame_origin,
accessing_origin.GetURL());
}
bool PrivacySandboxSettingsImpl::IsSharedStorageSelectURLAllowed(
const url::Origin& top_frame_origin,
const url::Origin& accessing_origin) const {
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status =
GetM1FledgeAllowedStatus(top_frame_origin, accessing_origin);
base::UmaHistogramEnumeration(
"PrivacySandbox.IsSharedStorageSelectURLAllowed", status);
return IsAllowed(status);
}
return IsSharedStorageAllowed(top_frame_origin, accessing_origin);
}
bool PrivacySandboxSettingsImpl::IsPrivateAggregationAllowed(
const url::Origin& top_frame_origin,
const url::Origin& reporting_origin) const {
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
Status status = GetM1AttributionReportingAllowedStatus(top_frame_origin,
reporting_origin);
base::UmaHistogramEnumeration("PrivacySandbox.IsPrivateAggregationAllowed",
status);
return IsAllowed(status);
}
return IsPrivacySandboxEnabledForContext(top_frame_origin,
reporting_origin.GetURL());
}
bool PrivacySandboxSettingsImpl::IsPrivacySandboxEnabled() const {
PrivacySandboxSettingsImpl::Status status = GetPrivacySandboxAllowedStatus();
if (!IsAllowed(status)) {
return false;
}
// For Measurement and Relevance APIs, we explicitly do not require the
// underlying pref to be enabled if there is a local flag enabling the APIs to
// allow for local testing.
if (base::FeatureList::IsEnabled(
privacy_sandbox::kOverridePrivacySandboxSettingsLocalTesting)) {
return true;
}
return pref_service_->GetBoolean(prefs::kPrivacySandboxApisEnabledV2);
}
void PrivacySandboxSettingsImpl::SetAllPrivacySandboxAllowedForTesting() {
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
pref_service_->SetBoolean(prefs::kPrivacySandboxM1FledgeEnabled, true);
pref_service_->SetBoolean(prefs::kPrivacySandboxM1TopicsEnabled, true);
pref_service_->SetBoolean(prefs::kPrivacySandboxM1AdMeasurementEnabled,
true);
return;
}
pref_service_->SetBoolean(prefs::kPrivacySandboxApisEnabledV2, true);
}
void PrivacySandboxSettingsImpl::SetTopicsBlockedForTesting() {
if (base::FeatureList::IsEnabled(privacy_sandbox::kPrivacySandboxSettings4)) {
pref_service_->SetBoolean(prefs::kPrivacySandboxM1TopicsEnabled, false);
return;
}
pref_service_->SetBoolean(prefs::kPrivacySandboxApisEnabledV2, false);
}
void PrivacySandboxSettingsImpl::SetPrivacySandboxEnabled(bool enabled) {
pref_service_->SetBoolean(prefs::kPrivacySandboxApisEnabledV2, enabled);
}
bool PrivacySandboxSettingsImpl::IsPrivacySandboxRestricted() const {
return delegate_->IsPrivacySandboxRestricted();
}
bool PrivacySandboxSettingsImpl::IsPrivacySandboxCurrentlyUnrestricted() const {
return delegate_->IsPrivacySandboxCurrentlyUnrestricted();
}
bool PrivacySandboxSettingsImpl::IsSubjectToM1NoticeRestricted() const {
return delegate_->IsSubjectToM1NoticeRestricted();
}
bool PrivacySandboxSettingsImpl::IsRestrictedNoticeEnabled() const {
return privacy_sandbox::kPrivacySandboxSettings4RestrictedNotice.Get();
}
void PrivacySandboxSettingsImpl::OnCookiesCleared() {
SetTopicsDataAccessibleFromNow();
}
void PrivacySandboxSettingsImpl::OnFirstPartySetsEnabledPrefChanged() {
if (!base::FeatureList::IsEnabled(features::kFirstPartySets)) {
return;
}
for (auto& observer : observers_) {
observer.OnFirstPartySetsEnabledChanged(
pref_service_->GetBoolean(prefs::kPrivacySandboxFirstPartySetsEnabled));
}
}
void PrivacySandboxSettingsImpl::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void PrivacySandboxSettingsImpl::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void PrivacySandboxSettingsImpl::SetDelegateForTesting(
std::unique_ptr<Delegate> delegate) {
delegate_ = std::move(delegate);
}
void PrivacySandboxSettingsImpl::SetPrivacySandboxAttestationsMapForTesting(
const PrivacySandboxAttestationsMap& attestations_map) {
attestations_ = PrivacySandboxAttestations(attestations_map);
}
void PrivacySandboxSettingsImpl::AddPrivacySandboxAttestationOverride(
const GURL& url) {
attestations_.AddOverride(net::SchemefulSite(url));
}
const std::vector<net::SchemefulSite>
PrivacySandboxSettingsImpl::GetAttestationOverridesForTesting() const {
return attestations_.GetOverridesForTesting(); // IN-TEST
}
bool PrivacySandboxSettingsImpl::IsPrivacySandboxEnabledForContext(
const absl::optional<url::Origin>& top_frame_origin,
const GURL& url) const {
if (!IsPrivacySandboxEnabled()) {
return false;
}
// Third party cookies must also be available for this context. An empty site
// for cookies is provided so the context is always treated as a third party.
return cookie_settings_->IsFullCookieAccessAllowed(
url, net::SiteForCookies(), top_frame_origin,
net::CookieSettingOverrides());
}
void PrivacySandboxSettingsImpl::SetTopicsDataAccessibleFromNow() const {
pref_service_->SetTime(prefs::kPrivacySandboxTopicsDataAccessibleSince,
base::Time::Now());
for (auto& observer : observers_) {
observer.OnTopicsDataAccessibleSinceUpdated();
}
}
PrivacySandboxSettingsImpl::Status
PrivacySandboxSettingsImpl::GetSiteAccessAllowedStatus(
const url::Origin& top_frame_origin,
const GURL& url) const {
// Relying on |host_content_settings_map_| instead of |cookie_settings_|
// allows to query whether the site associated with the |url| is allowed to
// access Site data (aka ContentSettingsType::COOKIES) without considering any
// 3P cookie blocking setting.
return content_settings::CookieSettingsBase::IsAllowed(
host_content_settings_map_->GetContentSetting(
url, top_frame_origin.GetURL(), ContentSettingsType::COOKIES))
? Status::kAllowed
: Status::kSiteDataAccessBlocked;
}
PrivacySandboxSettingsImpl::Status
PrivacySandboxSettingsImpl::GetPrivacySandboxAllowedStatus(
bool should_ignore_restriction /*=false*/) const {
if (delegate_->IsIncognitoProfile()) {
return Status::kIncognitoProfile;
}
if (IsPrivacySandboxRestricted() && !should_ignore_restriction) {
return Status::kRestricted;
}
return Status::kAllowed;
}
PrivacySandboxSettingsImpl::Status
PrivacySandboxSettingsImpl::GetM1PrivacySandboxApiEnabledStatus(
const std::string& pref_name) const {
DCHECK(pref_name == prefs::kPrivacySandboxM1TopicsEnabled ||
pref_name == prefs::kPrivacySandboxM1FledgeEnabled ||
pref_name == prefs::kPrivacySandboxM1AdMeasurementEnabled);
bool should_ignore_restriction =
pref_name == prefs::kPrivacySandboxM1AdMeasurementEnabled &&
IsRestrictedNoticeEnabled();
PrivacySandboxSettingsImpl::Status status =
GetPrivacySandboxAllowedStatus(should_ignore_restriction);
if (!IsAllowed(status)) {
return status;
}
// For Measurement and Relevance APIs, we explicitly do not require the
// underlying pref to be enabled if there is a local flag enabling the APIs to
// allow for local testing.
if (base::FeatureList::IsEnabled(
privacy_sandbox::kOverridePrivacySandboxSettingsLocalTesting)) {
return Status::kAllowed;
}
status = (pref_service_->GetBoolean(pref_name)) ? Status::kAllowed
: Status::kApisDisabled;
return status;
}
} // namespace privacy_sandbox