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/*
* Copyright (C) 2000 Harri Porten (porten@kde.org)
* Copyright (c) 2000 Daniel Molkentin (molkentin@kde.org)
* Copyright (c) 2000 Stefan Schimanski (schimmi@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc.
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#include "third_party/blink/renderer/modules/mediastream/navigator_media_stream.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_surface.h"
#include "third_party/blink/renderer/bindings/core/v8/dictionary.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_media_stream_constraints.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_navigator_user_media_error_callback.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_navigator_user_media_success_callback.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/navigator.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/page/page.h"
#include "third_party/blink/renderer/modules/mediastream/identifiability_metrics.h"
#include "third_party/blink/renderer/modules/mediastream/user_media_client.h"
#include "third_party/blink/renderer/modules/mediastream/user_media_request.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/privacy_budget/identifiability_digest_helpers.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
namespace blink {
namespace {
class V8Callbacks final : public blink::UserMediaRequest::Callbacks {
public:
V8Callbacks(V8NavigatorUserMediaSuccessCallback* success_callback,
V8NavigatorUserMediaErrorCallback* error_callback)
: success_callback_(success_callback), error_callback_(error_callback) {}
~V8Callbacks() override = default;
void Trace(Visitor* visitor) const override {
visitor->Trace(success_callback_);
visitor->Trace(error_callback_);
UserMediaRequest::Callbacks::Trace(visitor);
}
void OnSuccess(const MediaStreamVector& streams,
CaptureController* capture_controller) override {
DCHECK_EQ(streams.size(), 1u);
success_callback_->InvokeAndReportException(nullptr, streams[0]);
}
void OnError(ScriptWrappable* callback_this_value,
const V8MediaStreamError* error,
CaptureController* capture_controller,
UserMediaRequestResult result) override {
error_callback_->InvokeAndReportException(callback_this_value, error);
}
private:
Member<V8NavigatorUserMediaSuccessCallback> success_callback_;
Member<V8NavigatorUserMediaErrorCallback> error_callback_;
};
} // namespace
void NavigatorMediaStream::getUserMedia(
Navigator& navigator,
const MediaStreamConstraints* options,
V8NavigatorUserMediaSuccessCallback* success_callback,
V8NavigatorUserMediaErrorCallback* error_callback,
ExceptionState& exception_state) {
DCHECK(success_callback);
DCHECK(error_callback);
if (!navigator.DomWindow()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kNotSupportedError,
"No user media client available; is this a detached window?");
return;
}
UserMediaClient* user_media = UserMediaClient::From(navigator.DomWindow());
// Navigator::DomWindow() should not return a non-null detached window, so we
// should also successfully get a UserMediaClient from it.
DCHECK(user_media) << "Missing UserMediaClient on a non-null DomWindow";
IdentifiableSurface surface;
constexpr IdentifiableSurface::Type surface_type =
IdentifiableSurface::Type::kNavigator_GetUserMedia;
if (IdentifiabilityStudySettings::Get()->ShouldSampleType(surface_type)) {
surface = IdentifiableSurface::FromTypeAndToken(
surface_type, TokenFromConstraints(options));
}
UserMediaRequest* request = UserMediaRequest::Create(
navigator.DomWindow(), user_media, UserMediaRequestType::kUserMedia,
options,
MakeGarbageCollected<V8Callbacks>(success_callback, error_callback),
exception_state, surface);
if (!request) {
DCHECK(exception_state.HadException());
return;
}
String error_message;
if (!request->IsSecureContextUse(error_message)) {
request->Fail(
mojom::blink::MediaStreamRequestResult::INVALID_SECURITY_ORIGIN,
error_message);
RecordIdentifiabilityMetric(
surface, navigator.GetExecutionContext(),
IdentifiabilityBenignStringToken(error_message));
return;
}
request->Start();
}
} // namespace blink
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