| /* |
| * Copyright (C) 2013 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 "WebEmbeddedWorkerImpl.h" |
| |
| #include "ServiceWorkerGlobalScopeProxy.h" |
| #include "WebDataSourceImpl.h" |
| #include "WebFrameImpl.h" |
| #include "WebServiceWorkerContextClient.h" |
| #include "WebView.h" |
| #include "WebWorkerPermissionClientProxy.h" |
| #include "WorkerPermissionClient.h" |
| #include "core/dom/Document.h" |
| #include "core/loader/FrameLoadRequest.h" |
| #include "core/loader/SubstituteData.h" |
| #include "core/workers/WorkerClients.h" |
| #include "core/workers/WorkerLoaderProxy.h" |
| #include "core/workers/WorkerScriptLoader.h" |
| #include "core/workers/WorkerScriptLoaderClient.h" |
| #include "core/workers/WorkerThreadStartupData.h" |
| #include "modules/serviceworkers/ServiceWorkerThread.h" |
| #include "platform/NotImplemented.h" |
| #include "platform/SharedBuffer.h" |
| #include "wtf/Functional.h" |
| |
| using namespace WebCore; |
| |
| namespace blink { |
| |
| // A thin wrapper for one-off script loading. |
| class WebEmbeddedWorkerImpl::Loader : public WorkerScriptLoaderClient { |
| public: |
| static PassOwnPtr<Loader> create(ExecutionContext* loadingContext, const KURL& scriptURL, const Closure& callback) |
| { |
| return adoptPtr(new Loader(loadingContext, scriptURL, callback)); |
| } |
| |
| virtual ~Loader() |
| { |
| m_scriptLoader->setClient(0); |
| } |
| |
| virtual void notifyFinished() OVERRIDE |
| { |
| m_callback(); |
| } |
| |
| void cancel() |
| { |
| m_scriptLoader->cancel(); |
| } |
| |
| bool failed() const { return m_scriptLoader->failed(); } |
| const KURL& url() const { return m_scriptLoader->responseURL(); } |
| String script() const { return m_scriptLoader->script(); } |
| |
| private: |
| Loader(ExecutionContext* loadingContext, const KURL& scriptURL, const Closure& callback) |
| : m_scriptLoader(WorkerScriptLoader::create()) |
| , m_callback(callback) |
| { |
| m_scriptLoader->setTargetType(ResourceRequest::TargetIsServiceWorker); |
| m_scriptLoader->loadAsynchronously( |
| loadingContext, scriptURL, DenyCrossOriginRequests, this); |
| } |
| |
| RefPtr<WorkerScriptLoader> m_scriptLoader; |
| Closure m_callback; |
| }; |
| |
| class WebEmbeddedWorkerImpl::LoaderProxy : public WorkerLoaderProxy { |
| public: |
| static PassOwnPtr<LoaderProxy> create(WebEmbeddedWorkerImpl& embeddedWorker) |
| { |
| return adoptPtr(new LoaderProxy(embeddedWorker)); |
| } |
| |
| virtual void postTaskToLoader(PassOwnPtr<ExecutionContextTask> task) OVERRIDE |
| { |
| m_embeddedWorker.m_loadingContext->postTask(task); |
| } |
| |
| virtual bool postTaskForModeToWorkerGlobalScope(PassOwnPtr<ExecutionContextTask> task, const String& mode) OVERRIDE |
| { |
| if (m_embeddedWorker.m_askedToTerminate || !m_embeddedWorker.m_workerThread) |
| return false; |
| return m_embeddedWorker.m_workerThread->runLoop().postTaskForMode(task, mode); |
| } |
| |
| private: |
| explicit LoaderProxy(WebEmbeddedWorkerImpl& embeddedWorker) |
| : m_embeddedWorker(embeddedWorker) |
| { |
| } |
| |
| // Not owned, embedded worker owns this. |
| WebEmbeddedWorkerImpl& m_embeddedWorker; |
| }; |
| |
| WebEmbeddedWorker* WebEmbeddedWorker::create( |
| WebServiceWorkerContextClient* client, |
| WebWorkerPermissionClientProxy* permissionClient) |
| { |
| return new WebEmbeddedWorkerImpl(adoptPtr(client), adoptPtr(permissionClient)); |
| } |
| |
| WebEmbeddedWorkerImpl::WebEmbeddedWorkerImpl( |
| PassOwnPtr<WebServiceWorkerContextClient> client, |
| PassOwnPtr<WebWorkerPermissionClientProxy> permissionClient) |
| : m_workerContextClient(client) |
| , m_permissionClient(permissionClient) |
| , m_askedToTerminate(false) |
| { |
| } |
| |
| WebEmbeddedWorkerImpl::~WebEmbeddedWorkerImpl() |
| { |
| ASSERT(m_webView); |
| |
| // Detach the client before closing the view to avoid getting called back. |
| toWebFrameImpl(m_mainFrame)->setClient(0); |
| |
| m_webView->close(); |
| m_mainFrame->close(); |
| } |
| |
| void WebEmbeddedWorkerImpl::startWorkerContext( |
| const WebEmbeddedWorkerStartData& data) |
| { |
| ASSERT(!m_askedToTerminate); |
| ASSERT(!m_mainScriptLoader); |
| m_workerStartData = data; |
| |
| prepareShadowPageForLoader(); |
| |
| m_mainScriptLoader = Loader::create( |
| m_loadingContext.get(), |
| data.scriptURL, |
| bind(&WebEmbeddedWorkerImpl::onScriptLoaderFinished, this)); |
| } |
| |
| void WebEmbeddedWorkerImpl::terminateWorkerContext() |
| { |
| if (m_askedToTerminate) |
| return; |
| m_askedToTerminate = true; |
| if (m_mainScriptLoader) |
| m_mainScriptLoader->cancel(); |
| if (m_workerThread) |
| m_workerThread->stop(); |
| } |
| |
| void WebEmbeddedWorkerImpl::prepareShadowPageForLoader() |
| { |
| // Create 'shadow page', which is never displayed and is used mainly to |
| // provide a context for loading on the main thread. |
| // |
| // FIXME: This does mostly same as WebSharedWorkerImpl::initializeLoader. |
| // This code, and probably most of the code in this class should be shared |
| // with SharedWorker. |
| ASSERT(!m_webView); |
| m_webView = WebView::create(0); |
| m_mainFrame = WebFrame::create(this); |
| m_webView->setMainFrame(m_mainFrame); |
| |
| WebFrameImpl* webFrame = toWebFrameImpl(m_webView->mainFrame()); |
| |
| // Construct substitute data source for the 'shadow page'. We only need it |
| // to have same origin as the worker so the loading checks work correctly. |
| CString content(""); |
| int length = static_cast<int>(content.length()); |
| RefPtr<SharedBuffer> buffer(SharedBuffer::create(content.data(), length)); |
| webFrame->frame()->loader().load(FrameLoadRequest(0, ResourceRequest(m_workerStartData.scriptURL), SubstituteData(buffer, "text/html", "UTF-8", KURL()))); |
| |
| // This document context will be used as 'loading context' for the worker. |
| m_loadingContext = webFrame->frame()->document(); |
| } |
| |
| void WebEmbeddedWorkerImpl::didCreateDataSource(WebFrame*, WebDataSource* ds) |
| { |
| // Tell the loader to load the data into the 'shadow page' synchronously, |
| // so we can grab the resulting Document right after load. |
| static_cast<WebDataSourceImpl*>(ds)->setDeferMainResourceDataLoad(false); |
| } |
| |
| void WebEmbeddedWorkerImpl::onScriptLoaderFinished() |
| { |
| ASSERT(m_mainScriptLoader); |
| |
| if (m_mainScriptLoader->failed() || m_askedToTerminate) { |
| m_workerContextClient->workerContextFailedToStart(); |
| m_mainScriptLoader.clear(); |
| return; |
| } |
| |
| WorkerThreadStartMode startMode = |
| (m_workerStartData.startMode == WebEmbeddedWorkerStartModePauseOnStart) |
| ? PauseWorkerGlobalScopeOnStart : DontPauseWorkerGlobalScopeOnStart; |
| |
| OwnPtr<WorkerClients> workerClients = WorkerClients::create(); |
| providePermissionClientToWorker(workerClients.get(), m_permissionClient.release()); |
| |
| OwnPtr<WorkerThreadStartupData> startupData = |
| WorkerThreadStartupData::create( |
| m_mainScriptLoader->url(), |
| m_workerStartData.userAgent, |
| m_mainScriptLoader->script(), |
| startMode, |
| // FIXME: fill appropriate CSP info and policy type. |
| String(), |
| ContentSecurityPolicy::Enforce, |
| workerClients.release()); |
| |
| m_mainScriptLoader.clear(); |
| |
| m_workerGlobalScopeProxy = ServiceWorkerGlobalScopeProxy::create(*this, *m_loadingContext, m_workerContextClient.release()); |
| m_loaderProxy = LoaderProxy::create(*this); |
| |
| m_workerThread = ServiceWorkerThread::create(*m_loaderProxy, *m_workerGlobalScopeProxy, startupData.release()); |
| m_workerThread->start(); |
| } |
| |
| } // namespace blink |