/* * 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> namespace WebCore { using namespace JSC; 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()) { // FIXME: Why does this suppress exceptions? result = serializedValue->deserialize(state, globalObject(), wrapped().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