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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 "chrome/browser/android/persisted_tab_data/sensitivity_persisted_tab_data_android.h"
#include "chrome/browser/android/persisted_tab_data/sensitivity_data.pb.h"
#include "components/search_engines/template_url_service.h"
SensitivityPersistedTabDataAndroid::SensitivityPersistedTabDataAndroid(
TabAndroid* tab_android)
: PersistedTabDataAndroid(
tab_android,
SensitivityPersistedTabDataAndroid::UserDataKey()),
tab_(tab_android) {}
void SensitivityPersistedTabDataAndroid::RegisterPCAService(
page_content_annotations::PageContentAnnotationsService*
page_content_annotations_service) {
DCHECK(page_content_annotations_service);
if (page_content_annotations_service_ == page_content_annotations_service) {
return;
}
page_content_annotations_service_ = page_content_annotations_service;
page_content_annotations_service_->AddObserver(
page_content_annotations::AnnotationType::kContentVisibility, this);
}
SensitivityPersistedTabDataAndroid::~SensitivityPersistedTabDataAndroid() {
if (page_content_annotations_service_ != nullptr) {
page_content_annotations_service_->RemoveObserver(
page_content_annotations::AnnotationType::kContentVisibility, this);
}
}
void SensitivityPersistedTabDataAndroid::From(
TabAndroid* tab_android,
PersistedTabDataAndroid::FromCallback from_callback) {
PersistedTabDataAndroid::From(
tab_android->GetWeakPtr(),
SensitivityPersistedTabDataAndroid::UserDataKey(),
base::BindOnce([](TabAndroid* tab_android)
-> std::unique_ptr<PersistedTabDataAndroid> {
return std::make_unique<SensitivityPersistedTabDataAndroid>(
tab_android);
}),
std::move(from_callback));
}
std::unique_ptr<const std::vector<uint8_t>>
SensitivityPersistedTabDataAndroid::Serialize() {
sensitivity::SensitivityData sensitivity_data;
sensitivity_data.set_is_sensitive(is_sensitive_);
std::unique_ptr<std::vector<uint8_t>> data =
std::make_unique<std::vector<uint8_t>>(sensitivity_data.ByteSizeLong());
sensitivity_data.SerializeToArray(data->data(), data->size());
return data;
}
void SensitivityPersistedTabDataAndroid::Deserialize(
const std::vector<uint8_t>& data) {
sensitivity::SensitivityData sensitivity_data;
if (!sensitivity_data.ParseFromArray(data.data(), data.size())) {
sensitivity_data.Clear();
}
is_sensitive_ = sensitivity_data.is_sensitive();
}
void SensitivityPersistedTabDataAndroid::OnPageContentAnnotated(
const GURL& url,
const page_content_annotations::PageContentAnnotationsResult& result) {
if (tab_->GetURL() != url) {
return;
}
// Setting the cutoff value to 0.5 for binary classification of data
// sensitivity. This value ensures that we neither overclassify nor
// underclassify sensitive data
set_is_sensitive(result.GetContentVisibilityScore() < 0.5);
}
void SensitivityPersistedTabDataAndroid::ExistsForTesting(
TabAndroid* tab_android,
base::OnceCallback<void(bool)> exists_callback) {
PersistedTabDataAndroid::ExistsForTesting(
tab_android, SensitivityPersistedTabDataAndroid::UserDataKey(),
std::move(exists_callback));
}
TAB_ANDROID_USER_DATA_KEY_IMPL(SensitivityPersistedTabDataAndroid)
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