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// Copyright 2018 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 "third_party/blink/renderer/core/frame/dactyloscoper.h"
#include "third_party/blink/public/common/privacy_budget/identifiability_metric_builder.h"
#include "third_party/blink/public/common/privacy_budget/identifiability_study_settings.h"
#include "third_party/blink/public/common/privacy_budget/identifiable_token_builder.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/loader/document_loader.h"
#include "third_party/blink/renderer/core/svg/svg_string_list_tear_off.h"
#include "third_party/blink/renderer/platform/privacy_budget/identifiability_digest_helpers.h"
namespace blink {
Dactyloscoper::Dactyloscoper() = default;
void Dactyloscoper::Record(WebFeature feature) {
// TODO(mkwst): This is a stub. We'll pull in more interesting functionality
// here over time.
}
namespace {
bool ShouldSample(WebFeature feature) {
return IdentifiabilityStudySettings::Get()->ShouldSample(
IdentifiableSurface::FromTypeAndToken(
IdentifiableSurface::Type::kWebFeature, feature));
}
} // namespace
// static
void Dactyloscoper::Record(ExecutionContext* context, WebFeature feature) {
// TODO: Workers.
if (!context)
return;
if (auto* window = DynamicTo<LocalDOMWindow>(context)) {
if (auto* frame = window->GetFrame())
frame->Loader().GetDocumentLoader()->GetDactyloscoper().Record(feature);
}
}
// static
void Dactyloscoper::RecordDirectSurface(ExecutionContext* context,
WebFeature feature,
const IdentifiableToken& value) {
if (!context || !ShouldSample(feature))
return;
auto* window = DynamicTo<LocalDOMWindow>(context);
if (!window)
return;
Document* document = window->document();
IdentifiabilityMetricBuilder(document->UkmSourceID())
.SetWebfeature(feature, value)
.Record(document->UkmRecorder());
}
// static
void Dactyloscoper::RecordDirectSurface(ExecutionContext* context,
WebFeature feature,
const String& str) {
if (!context || !ShouldSample(feature))
return;
if (str.IsEmpty())
return;
Dactyloscoper::RecordDirectSurface(context, feature,
IdentifiabilitySensitiveStringToken(str));
}
// static
void Dactyloscoper::RecordDirectSurface(ExecutionContext* context,
WebFeature feature,
const Vector<String>& strs) {
if (!context || !ShouldSample(feature))
return;
if (strs.IsEmpty())
return;
IdentifiableTokenBuilder builder;
for (const auto& str : strs) {
builder.AddToken(IdentifiabilitySensitiveStringToken(str));
}
Dactyloscoper::RecordDirectSurface(context, feature, builder.GetToken());
}
// static
void Dactyloscoper::RecordDirectSurface(ExecutionContext* context,
WebFeature feature,
const DOMArrayBufferView* buffer) {
if (!context || !ShouldSample(feature))
return;
if (!buffer || buffer->byteLength() == 0)
return;
IdentifiableTokenBuilder builder(base::make_span(
static_cast<uint8_t*>(buffer->BaseAddress()), buffer->byteLength()));
Dactyloscoper::RecordDirectSurface(context, feature, builder.GetToken());
}
// static
void Dactyloscoper::RecordDirectSurface(ExecutionContext* context,
WebFeature feature,
SVGStringListTearOff* strings) {
RecordDirectSurface(context, feature, strings->Values());
}
} // namespace blink
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