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/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 "JSMessageEvent.h"
#include "JSBlob.h"
#include "JSDOMBinding.h"
#include "JSDOMWindow.h"
#include "JSEventTarget.h"
#include "JSMessagePortCustom.h"
#include "MessageEvent.h"
#include <runtime/JSArray.h>
#include <runtime/JSArrayBuffer.h>
using namespace JSC;
namespace WebCore {
JSValue JSMessageEvent::data(ExecState& state) const
{
if (JSValue cachedValue = m_data.get()) {
// We cannot use a cached object if we are in a different world than the one it was created in.
if (!cachedValue.isObject() || &worldForDOMObject(cachedValue.getObject()) == ¤tWorld(&state))
return cachedValue;
ASSERT_NOT_REACHED();
}
MessageEvent& event = wrapped();
JSValue result;
switch (event.dataType()) {
case MessageEvent::DataTypeScriptValue: {
Deprecated::ScriptValue scriptValue = event.dataAsScriptValue();
if (scriptValue.hasNoValue())
result = jsNull();
else {
JSValue dataValue = scriptValue.jsValue();
// We need to make sure MessageEvents do not leak objects in their state property across isolated DOM worlds.
// Ideally, we would check that the worlds have different privileges but that's not possible yet.
if (dataValue.isObject() && &worldForDOMObject(dataValue.getObject()) != ¤tWorld(&state)) {
RefPtr<SerializedScriptValue> serializedValue = event.trySerializeData(&state);
if (serializedValue)
result = serializedValue->deserialize(&state, globalObject(), nullptr);
else
result = jsNull();
} else
result = dataValue;
}
break;
}
case MessageEvent::DataTypeSerializedScriptValue:
if (RefPtr<SerializedScriptValue> serializedValue = event.dataAsSerializedScriptValue()) {
MessagePortArray ports = wrapped().ports();
// FIXME: Why does this suppress exceptions?
result = serializedValue->deserialize(&state, globalObject(), &ports, NonThrowing);
} else
result = jsNull();
break;
case MessageEvent::DataTypeString:
result = jsStringWithCache(&state, event.dataAsString());
break;
case MessageEvent::DataTypeBlob:
result = toJS(&state, globalObject(), event.dataAsBlob());
break;
case MessageEvent::DataTypeArrayBuffer:
result = toJS(&state, globalObject(), event.dataAsArrayBuffer());
break;
}
// Save the result so we don't have to deserialize the value again.
m_data.set(state.vm(), this, result);
return result;
}
static JSC::JSValue handleInitMessageEvent(JSMessageEvent* jsEvent, JSC::ExecState& state)
{
const String& typeArg = state.argument(0).toString(&state)->value(&state);
bool canBubbleArg = state.argument(1).toBoolean(&state);
bool cancelableArg = state.argument(2).toBoolean(&state);
const String originArg = state.argument(4).toString(&state)->value(&state);
const String lastEventIdArg = state.argument(5).toString(&state)->value(&state);
DOMWindow* sourceArg = JSDOMWindow::toWrapped(state.argument(6));
std::unique_ptr<MessagePortArray> messagePorts;
std::unique_ptr<ArrayBufferArray> arrayBuffers;
if (!state.argument(7).isUndefinedOrNull()) {
messagePorts = std::make_unique<MessagePortArray>();
arrayBuffers = std::make_unique<ArrayBufferArray>();
fillMessagePortArray(state, state.argument(7), *messagePorts, *arrayBuffers);
if (state.hadException())
return jsUndefined();
}
Deprecated::ScriptValue dataArg = Deprecated::ScriptValue(state.vm(), state.argument(3));
if (state.hadException())
return jsUndefined();
MessageEvent& event = jsEvent->wrapped();
event.initMessageEvent(typeArg, canBubbleArg, cancelableArg, dataArg, originArg, lastEventIdArg, sourceArg, WTFMove(messagePorts));
jsEvent->m_data.set(state.vm(), jsEvent, dataArg.jsValue());
return jsUndefined();
}
JSC::JSValue JSMessageEvent::initMessageEvent(JSC::ExecState& state)
{
return handleInitMessageEvent(this, state);
}
JSC::JSValue JSMessageEvent::webkitInitMessageEvent(JSC::ExecState& state)
{
return handleInitMessageEvent(this, state);
}
} // namespace WebCore
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