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/*
* Copyright (C) 2007 Henry Mason (hmason@mac.com)
* Copyright (C) 2003-2018 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. ``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
* 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 "MessageEvent.h"
#include "Blob.h"
#include "EventNames.h"
#include "JSMessageEvent.h"
#include "SecurityOrigin.h"
#include <JavaScriptCore/JSCInlines.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
using namespace JSC;
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(MessageEvent);
MessageEvent::MessageEvent()
: Event(EventInterfaceType::MessageEvent)
{
}
inline MessageEvent::MessageEvent(const AtomString& type, Init&& initializer, IsTrusted isTrusted)
: Event(EventInterfaceType::MessageEvent, type, initializer, isTrusted)
, m_data(JSValueTag { })
, m_origin(initializer.origin)
, m_lastEventId(initializer.lastEventId)
, m_source(WTFMove(initializer.source))
, m_ports(WTFMove(initializer.ports))
, m_jsData(initializer.data)
{
}
inline MessageEvent::MessageEvent(const AtomString& type, DataType&& data, RefPtr<SecurityOrigin>&& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<Ref<MessagePort>>&& ports)
: Event(EventInterfaceType::MessageEvent, type, CanBubble::No, IsCancelable::No)
, m_data(WTFMove(data))
, m_origin(WTFMove(origin))
, m_lastEventId(lastEventId)
, m_source(WTFMove(source))
, m_ports(WTFMove(ports))
{
}
auto MessageEvent::create(JSC::JSGlobalObject& globalObject, Ref<SerializedScriptValue>&& data, RefPtr<SecurityOrigin>&& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<Ref<MessagePort>>&& ports) -> MessageEventWithStrongData
{
auto& vm = globalObject.vm();
Locker<JSC::JSLock> locker(vm.apiLock());
auto catchScope = DECLARE_CATCH_SCOPE(vm);
bool didFail = false;
auto deserialized = data->deserialize(globalObject, &globalObject, ports, SerializationErrorMode::NonThrowing, &didFail);
if (catchScope.exception()) [[unlikely]]
deserialized = jsUndefined();
JSC::Strong<JSC::Unknown> strongData(vm, deserialized);
auto& eventType = didFail ? eventNames().messageerrorEvent : eventNames().messageEvent;
Ref event = adoptRef(*new MessageEvent(eventType, MessageEvent::JSValueTag { }, WTFMove(origin), lastEventId, WTFMove(source), WTFMove(ports)));
JSC::Strong<JSC::JSObject> strongWrapper(vm, JSC::jsCast<JSC::JSObject*>(toJS(&globalObject, JSC::jsCast<JSDOMGlobalObject*>(&globalObject), event.get())));
event->jsData().set(vm, strongWrapper.get(), deserialized);
return MessageEventWithStrongData { event, WTFMove(strongWrapper) };
}
Ref<MessageEvent> MessageEvent::create(const AtomString& type, DataType&& data, RefPtr<SecurityOrigin>&& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<Ref<MessagePort>>&& ports)
{
return adoptRef(*new MessageEvent(type, WTFMove(data), WTFMove(origin), lastEventId, WTFMove(source), WTFMove(ports)));
}
Ref<MessageEvent> MessageEvent::create(DataType&& data, RefPtr<SecurityOrigin>&& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<Ref<MessagePort>>&& ports)
{
return create(eventNames().messageEvent, WTFMove(data), WTFMove(origin), lastEventId, WTFMove(source), WTFMove(ports));
}
Ref<MessageEvent> MessageEvent::createForBindings()
{
return adoptRef(*new MessageEvent);
}
Ref<MessageEvent> MessageEvent::create(const AtomString& type, Init&& initializer, IsTrusted isTrusted)
{
return adoptRef(*new MessageEvent(type, WTFMove(initializer), isTrusted));
}
MessageEvent::~MessageEvent() = default;
String MessageEvent::origin() const
{
return WTF::switchOn(m_origin, [](const RefPtr<SecurityOrigin>& origin) {
return origin ? origin->toString() : emptyString();
},
[](const String& origin) {
return origin;
});
}
const RefPtr<SecurityOrigin> MessageEvent::securityOrigin() const
{
auto* origin = std::get_if<RefPtr<SecurityOrigin>>(&m_origin);
return origin ? *origin : nullptr;
}
void MessageEvent::initMessageEvent(const AtomString& type, bool canBubble, bool cancelable, JSValue data, const String& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<Ref<MessagePort>>&& ports)
{
if (isBeingDispatched())
return;
initEvent(type, canBubble, cancelable);
{
Locker locker { m_concurrentDataAccessLock };
m_data = JSValueTag { };
}
// FIXME: This code is wrong: we should emit a write-barrier. Otherwise, GC can collect it.
// https://bugs.webkit.org/show_bug.cgi?id=236353
m_jsData.setWeakly(data);
m_cachedData.clear();
m_origin = origin;
m_lastEventId = lastEventId;
m_source = WTFMove(source);
m_ports = WTFMove(ports);
m_cachedPorts.clear();
}
size_t MessageEvent::memoryCost() const
{
Locker locker { m_concurrentDataAccessLock };
return WTF::switchOn(m_data, [](JSValueTag) -> size_t {
return 0;
}, [](const Ref<SerializedScriptValue>& data) -> size_t {
return data->memoryCost();
}, [](const String& string) -> size_t {
return string.sizeInBytes();
}, [](const Ref<Blob>& blob) -> size_t {
return blob->memoryCost();
}, [](const Ref<ArrayBuffer>& buffer) -> size_t {
return buffer->byteLength();
});
}
} // namespace WebCore
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