1/* 2 * Copyright (C) 2009 Google Inc. All rights reserved. 3 * Copyright (C) 2010 Apple Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include "config.h" 33 34#if ENABLE(SHARED_WORKERS) 35 36#include "SharedWorker.h" 37 38#include "ExceptionCode.h" 39#include "FeatureObserver.h" 40#include "InspectorInstrumentation.h" 41#include "KURL.h" 42#include "MessageChannel.h" 43#include "MessagePort.h" 44#include "ScriptExecutionContext.h" 45#include "SecurityOrigin.h" 46#include "SharedWorkerRepository.h" 47 48namespace WebCore { 49 50inline SharedWorker::SharedWorker(ScriptExecutionContext* context) 51 : AbstractWorker(context) 52{ 53} 54 55PassRefPtr<SharedWorker> SharedWorker::create(ScriptExecutionContext* context, const String& url, const String& name, ExceptionCode& ec) 56{ 57 ASSERT(isMainThread()); 58 FeatureObserver::observe(static_cast<Document*>(context)->domWindow(), FeatureObserver::SharedWorkerStart); 59 60 RefPtr<SharedWorker> worker = adoptRef(new SharedWorker(context)); 61 62 RefPtr<MessageChannel> channel = MessageChannel::create(context); 63 worker->m_port = channel->port1(); 64 OwnPtr<MessagePortChannel> remotePort = channel->port2()->disentangle(); 65 ASSERT(remotePort); 66 67 worker->suspendIfNeeded(); 68 69 KURL scriptURL = worker->resolveURL(url, ec); 70 if (scriptURL.isEmpty()) 71 return 0; 72 73 // We don't currently support nested workers, so workers can only be created from documents. 74 ASSERT_WITH_SECURITY_IMPLICATION(context->isDocument()); 75 Document* document = static_cast<Document*>(context); 76 if (!document->securityOrigin()->canAccessSharedWorkers(document->topOrigin())) { 77 ec = SECURITY_ERR; 78 return 0; 79 } 80 81 SharedWorkerRepository::connect(worker.get(), remotePort.release(), scriptURL, name, ec); 82 83 return worker.release(); 84} 85 86SharedWorker::~SharedWorker() 87{ 88} 89 90const AtomicString& SharedWorker::interfaceName() const 91{ 92 return eventNames().interfaceForSharedWorker; 93} 94 95} // namespace WebCore 96 97#endif // ENABLE(SHARED_WORKERS) 98