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/*
* Copyright (C) 2017 Apple Inc. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "ServiceWorker.h"
#if ENABLE(SERVICE_WORKER)
#include "Document.h"
#include "EventNames.h"
#include "Logging.h"
#include "MessagePort.h"
#include "SWClientConnection.h"
#include "ScriptExecutionContext.h"
#include "SerializedScriptValue.h"
#include "ServiceWorkerClientData.h"
#include "ServiceWorkerContainer.h"
#include "ServiceWorkerGlobalScope.h"
#include "ServiceWorkerProvider.h"
#include "ServiceWorkerThread.h"
#include "WorkerSWClientConnection.h"
#include <JavaScriptCore/JSCJSValueInlines.h>
#include <wtf/IsoMallocInlines.h>
#include <wtf/NeverDestroyed.h>
#define WORKER_RELEASE_LOG_IF_ALLOWED(fmt, ...) RELEASE_LOG_IF(isAlwaysOnLoggingAllowed(), ServiceWorker, "%p - ServiceWorker::" fmt, this, ##__VA_ARGS__)
#define WORKER_RELEASE_LOG_ERROR_IF_ALLOWED(fmt, ...) RELEASE_LOG_ERROR_IF(isAlwaysOnLoggingAllowed(), ServiceWorker, "%p - ServiceWorker::" fmt, this, ##__VA_ARGS__)
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(ServiceWorker);
Ref<ServiceWorker> ServiceWorker::getOrCreate(ScriptExecutionContext& context, ServiceWorkerData&& data)
{
if (auto existingServiceWorker = context.serviceWorker(data.identifier))
return *existingServiceWorker;
return adoptRef(*new ServiceWorker(context, WTFMove(data)));
}
ServiceWorker::ServiceWorker(ScriptExecutionContext& context, ServiceWorkerData&& data)
: ActiveDOMObject(&context)
, m_data(WTFMove(data))
{
suspendIfNeeded();
context.registerServiceWorker(*this);
relaxAdoptionRequirement();
updatePendingActivityForEventDispatch();
WORKER_RELEASE_LOG_IF_ALLOWED("ServiceWorker: ID: %llu, state: %hhu", identifier().toUInt64(), m_data.state);
}
ServiceWorker::~ServiceWorker()
{
if (auto* context = scriptExecutionContext())
context->unregisterServiceWorker(*this);
}
void ServiceWorker::updateState(State state)
{
WORKER_RELEASE_LOG_IF_ALLOWED("updateState: Updating service worker %llu state from %hhu to %hhu. Registration ID: %llu", identifier().toUInt64(), m_data.state, state, registrationIdentifier().toUInt64());
m_data.state = state;
if (state != State::Installing && !m_isStopped) {
ASSERT(m_pendingActivityForEventDispatch);
dispatchEvent(Event::create(eventNames().statechangeEvent, Event::CanBubble::No, Event::IsCancelable::No));
}
updatePendingActivityForEventDispatch();
}
SWClientConnection& ServiceWorker::swConnection()
{
ASSERT(scriptExecutionContext());
if (is<WorkerGlobalScope>(scriptExecutionContext()))
return downcast<WorkerGlobalScope>(scriptExecutionContext())->swClientConnection();
return ServiceWorkerProvider::singleton().serviceWorkerConnection();
}
ExceptionOr<void> ServiceWorker::postMessage(JSC::JSGlobalObject& globalObject, JSC::JSValue messageValue, PostMessageOptions&& options)
{
if (m_isStopped)
return Exception { InvalidStateError };
Vector<RefPtr<MessagePort>> ports;
auto messageData = SerializedScriptValue::create(globalObject, messageValue, WTFMove(options.transfer), ports, SerializationContext::WorkerPostMessage);
if (messageData.hasException())
return messageData.releaseException();
// Disentangle the port in preparation for sending it to the remote context.
auto portsOrException = MessagePort::disentanglePorts(WTFMove(ports));
if (portsOrException.hasException())
return portsOrException.releaseException();
auto& context = *scriptExecutionContext();
ServiceWorkerOrClientIdentifier sourceIdentifier;
if (is<ServiceWorkerGlobalScope>(context))
sourceIdentifier = downcast<ServiceWorkerGlobalScope>(context).thread().identifier();
else {
auto& connection = ServiceWorkerProvider::singleton().serviceWorkerConnection();
sourceIdentifier = ServiceWorkerClientIdentifier { connection.serverConnectionIdentifier(), downcast<Document>(context).identifier() };
}
MessageWithMessagePorts message { messageData.releaseReturnValue(), portsOrException.releaseReturnValue() };
swConnection().postMessageToServiceWorker(identifier(), WTFMove(message), sourceIdentifier);
return { };
}
EventTargetInterface ServiceWorker::eventTargetInterface() const
{
return ServiceWorkerEventTargetInterfaceType;
}
ScriptExecutionContext* ServiceWorker::scriptExecutionContext() const
{
return ContextDestructionObserver::scriptExecutionContext();
}
const char* ServiceWorker::activeDOMObjectName() const
{
return "ServiceWorker";
}
void ServiceWorker::stop()
{
m_isStopped = true;
removeAllEventListeners();
scriptExecutionContext()->unregisterServiceWorker(*this);
updatePendingActivityForEventDispatch();
}
void ServiceWorker::updatePendingActivityForEventDispatch()
{
// ServiceWorkers can dispatch events until they become redundant or they are stopped.
if (m_isStopped || state() == State::Redundant) {
m_pendingActivityForEventDispatch = nullptr;
return;
}
if (m_pendingActivityForEventDispatch)
return;
m_pendingActivityForEventDispatch = makePendingActivity(*this);
}
bool ServiceWorker::isAlwaysOnLoggingAllowed() const
{
auto* context = scriptExecutionContext();
if (!context)
return false;
auto* container = context->serviceWorkerContainer();
if (!container)
return false;
return container->isAlwaysOnLoggingAllowed();
}
} // namespace WebCore
#endif // ENABLE(SERVICE_WORKER)