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/*
* Copyright (C) 2011 Ericsson AB. All rights reserved.
* Copyright (C) 2012 Google Inc. All rights reserved.
* Copyright (C) 2013-2016 Apple Inc. All rights reserved.
* Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Ericsson nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "UserMediaRequest.h"
#if ENABLE(MEDIA_STREAM)
#include "Document.h"
#include "DocumentLoader.h"
#include "ExceptionCode.h"
#include "JSMediaStream.h"
#include "JSOverconstrainedError.h"
#include "MainFrame.h"
#include "MediaConstraintsImpl.h"
#include "RealtimeMediaSourceCenter.h"
#include "Settings.h"
#include "UserMediaController.h"
namespace WebCore {
ExceptionOr<void> UserMediaRequest::start(Document& document, Ref<MediaConstraintsImpl>&& audioConstraints, Ref<MediaConstraintsImpl>&& videoConstraints, DOMPromise<IDLInterface<MediaStream>>&& promise)
{
auto* userMedia = UserMediaController::from(document.page());
if (!userMedia)
return Exception { NOT_SUPPORTED_ERR }; // FIXME: Why is it better to return an exception here instead of rejecting the promise as we do just below?
if (!audioConstraints->isValid() && !videoConstraints->isValid()) {
promise.reject(TypeError);
return { };
}
adoptRef(*new UserMediaRequest(document, *userMedia, WTFMove(audioConstraints), WTFMove(videoConstraints), WTFMove(promise)))->start();
return { };
}
UserMediaRequest::UserMediaRequest(Document& document, UserMediaController& controller, Ref<MediaConstraintsImpl>&& audioConstraints, Ref<MediaConstraintsImpl>&& videoConstraints, DOMPromise<IDLInterface<MediaStream>>&& promise)
: ContextDestructionObserver(&document)
, m_audioConstraints(WTFMove(audioConstraints))
, m_videoConstraints(WTFMove(videoConstraints))
, m_controller(&controller)
, m_promise(WTFMove(promise))
{
}
UserMediaRequest::~UserMediaRequest()
{
}
SecurityOrigin* UserMediaRequest::userMediaDocumentOrigin() const
{
if (!m_scriptExecutionContext)
return nullptr;
return m_scriptExecutionContext->securityOrigin();
}
SecurityOrigin* UserMediaRequest::topLevelDocumentOrigin() const
{
if (!m_scriptExecutionContext)
return nullptr;
return &m_scriptExecutionContext->topOrigin();
}
static bool isSecure(DocumentLoader& documentLoader)
{
auto& response = documentLoader.response();
return response.url().protocolIs("https")
&& response.certificateInfo()
&& !response.certificateInfo()->containsNonRootSHA1SignedCertificate();
}
static bool canCallGetUserMedia(Document& document, String& errorMessage)
{
bool requiresSecureConnection = document.settings().mediaCaptureRequiresSecureConnection();
if (requiresSecureConnection && !isSecure(*document.loader())) {
errorMessage = "Trying to call getUserMedia from an insecure document.";
return false;
}
auto& topDocument = document.topDocument();
if (&document != &topDocument) {
auto& topOrigin = topDocument.topOrigin();
if (!document.securityOrigin().isSameSchemeHostPort(topOrigin)) {
errorMessage = "Trying to call getUserMedia from a document with a different security origin than its top-level frame.";
return false;
}
for (auto* ancestorDocument = document.parentDocument(); ancestorDocument != &topDocument; ancestorDocument = ancestorDocument->parentDocument()) {
if (requiresSecureConnection && !isSecure(*ancestorDocument->loader())) {
errorMessage = "Trying to call getUserMedia from a document with an insecure parent frame.";
return false;
}
if (!ancestorDocument->securityOrigin().isSameSchemeHostPort(topOrigin)) {
errorMessage = "Trying to call getUserMedia from a document with a different security origin than its top-level frame.";
return false;
}
}
}
return true;
}
void UserMediaRequest::start()
{
if (!m_scriptExecutionContext || !m_controller) {
deny(MediaAccessDenialReason::OtherFailure, emptyString());
return;
}
Document& document = downcast<Document>(*m_scriptExecutionContext);
// 10.2 - 6.3 Optionally, e.g., based on a previously-established user preference, for security reasons,
// or due to platform limitations, jump to the step labeled Permission Failure below.
String errorMessage;
if (!canCallGetUserMedia(document, errorMessage)) {
deny(MediaAccessDenialReason::PermissionDenied, emptyString());
document.domWindow()->printErrorMessage(errorMessage);
return;
}
m_controller->requestUserMediaAccess(*this);
}
void UserMediaRequest::allow(const String& audioDeviceUID, const String& videoDeviceUID)
{
m_allowedAudioDeviceUID = audioDeviceUID;
m_allowedVideoDeviceUID = videoDeviceUID;
RefPtr<UserMediaRequest> protectedThis = this;
RealtimeMediaSourceCenter::NewMediaStreamHandler callback = [this, protectedThis = WTFMove(protectedThis)](RefPtr<MediaStreamPrivate>&& privateStream) mutable {
if (!m_scriptExecutionContext)
return;
if (!privateStream) {
deny(MediaAccessDenialReason::HardwareError, emptyString());
return;
}
auto stream = MediaStream::create(*m_scriptExecutionContext, WTFMove(privateStream));
if (stream->getTracks().isEmpty()) {
deny(MediaAccessDenialReason::HardwareError, emptyString());
return;
}
for (auto& track : stream->getAudioTracks())
track->source().startProducingData();
for (auto& track : stream->getVideoTracks())
track->source().startProducingData();
m_promise.resolve(stream);
};
RealtimeMediaSourceCenter::singleton().createMediaStream(WTFMove(callback), m_allowedAudioDeviceUID, m_allowedVideoDeviceUID, &m_audioConstraints.get(), &m_videoConstraints.get());
}
void UserMediaRequest::deny(MediaAccessDenialReason reason, const String& invalidConstraint)
{
if (!m_scriptExecutionContext)
return;
switch (reason) {
case MediaAccessDenialReason::NoConstraints:
m_promise.reject(TypeError);
break;
case MediaAccessDenialReason::UserMediaDisabled:
m_promise.reject(SECURITY_ERR);
break;
case MediaAccessDenialReason::NoCaptureDevices:
m_promise.reject(NOT_FOUND_ERR);
break;
case MediaAccessDenialReason::InvalidConstraint:
m_promise.rejectType<IDLInterface<OverconstrainedError>>(OverconstrainedError::create(invalidConstraint, ASCIILiteral("Invalid constraint")).get());
break;
case MediaAccessDenialReason::HardwareError:
m_promise.reject(NotReadableError);
break;
case MediaAccessDenialReason::OtherFailure:
m_promise.reject(ABORT_ERR);
break;
case MediaAccessDenialReason::PermissionDenied:
m_promise.reject(NotAllowedError);
break;
}
}
void UserMediaRequest::contextDestroyed()
{
ContextDestructionObserver::contextDestroyed();
Ref<UserMediaRequest> protectedThis(*this);
if (m_controller) {
m_controller->cancelUserMediaAccessRequest(*this);
m_controller = nullptr;
}
}
Document* UserMediaRequest::document() const
{
return downcast<Document>(m_scriptExecutionContext);
}
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)
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