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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 "JSDOMConvertBufferSource.h"
#include "JSDOMConvertInterface.h"
#include "JSDOMConvertStrings.h"
#include "JSDOMWindow.h"
#include "JSEventTarget.h"
#include "JSMessagePort.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: {
JSValue dataValue = event.dataAsScriptValue();
if (!dataValue)
result = jsNull();
else {
// 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());
else
result = jsNull();
} else
result = dataValue;
}
break;
}
case MessageEvent::DataTypeSerializedScriptValue:
if (RefPtr<SerializedScriptValue> serializedValue = event.dataAsSerializedScriptValue()) {
Vector<RefPtr<MessagePort>> ports = wrapped().ports();
// FIXME: Why does this suppress exceptions?
result = serializedValue->deserialize(state, globalObject(), ports, SerializationErrorMode::NonThrowing);
} else
result = jsNull();
break;
case MessageEvent::DataTypeString:
result = toJS<IDLDOMString>(state, event.dataAsString());
break;
case MessageEvent::DataTypeBlob:
result = toJS<IDLInterface<Blob>>(state, *globalObject(), event.dataAsBlob());
break;
case MessageEvent::DataTypeArrayBuffer:
result = toJS<IDLInterface<ArrayBuffer>>(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;
}
} // namespace WebCore
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