| /* |
| * 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 "web/WebEmbeddedWorkerImpl.h" |
| |
| #include "core/dom/CrossThreadTask.h" |
| #include "core/dom/Document.h" |
| #include "core/fetch/SubstituteData.h" |
| #include "core/frame/csp/ContentSecurityPolicy.h" |
| #include "core/inspector/InspectorInstrumentation.h" |
| #include "core/inspector/WorkerDebuggerAgent.h" |
| #include "core/inspector/WorkerInspectorController.h" |
| #include "core/loader/FrameLoadRequest.h" |
| #include "core/workers/WorkerClients.h" |
| #include "core/workers/WorkerGlobalScope.h" |
| #include "core/workers/WorkerInspectorProxy.h" |
| #include "core/workers/WorkerLoaderProxy.h" |
| #include "core/workers/WorkerScriptLoader.h" |
| #include "core/workers/WorkerThreadStartupData.h" |
| #include "modules/serviceworkers/ServiceWorkerContainerClient.h" |
| #include "modules/serviceworkers/ServiceWorkerThread.h" |
| #include "platform/SharedBuffer.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/network/ContentSecurityPolicyParsers.h" |
| #include "platform/network/ContentSecurityPolicyResponseHeaders.h" |
| #include "public/platform/Platform.h" |
| #include "public/platform/WebServiceWorkerProvider.h" |
| #include "public/platform/WebURLRequest.h" |
| #include "public/web/WebDevToolsAgent.h" |
| #include "public/web/WebServiceWorkerContextClient.h" |
| #include "public/web/WebServiceWorkerNetworkProvider.h" |
| #include "public/web/WebSettings.h" |
| #include "public/web/WebView.h" |
| #include "public/web/WebWorkerContentSettingsClientProxy.h" |
| #include "web/ServiceWorkerGlobalScopeClientImpl.h" |
| #include "web/ServiceWorkerGlobalScopeProxy.h" |
| #include "web/WebDataSourceImpl.h" |
| #include "web/WebLocalFrameImpl.h" |
| #include "web/WorkerContentSettingsClient.h" |
| #include "wtf/Functional.h" |
| |
| namespace blink { |
| |
| WebEmbeddedWorker* WebEmbeddedWorker::create(WebServiceWorkerContextClient* client, WebWorkerContentSettingsClientProxy* contentSettingsClient) |
| { |
| return new WebEmbeddedWorkerImpl(adoptPtr(client), adoptPtr(contentSettingsClient)); |
| } |
| |
| static HashSet<WebEmbeddedWorkerImpl*>& runningWorkerInstances() |
| { |
| DEFINE_STATIC_LOCAL(HashSet<WebEmbeddedWorkerImpl*>, set, ()); |
| return set; |
| } |
| |
| WebEmbeddedWorkerImpl::WebEmbeddedWorkerImpl(PassOwnPtr<WebServiceWorkerContextClient> client, PassOwnPtr<WebWorkerContentSettingsClientProxy> ContentSettingsClient) |
| : m_workerContextClient(client) |
| , m_contentSettingsClient(ContentSettingsClient) |
| , m_workerInspectorProxy(WorkerInspectorProxy::create()) |
| , m_webView(0) |
| , m_mainFrame(0) |
| , m_loadingShadowPage(false) |
| , m_askedToTerminate(false) |
| , m_waitingForDebuggerState(NotWaitingForDebugger) |
| { |
| runningWorkerInstances().add(this); |
| } |
| |
| WebEmbeddedWorkerImpl::~WebEmbeddedWorkerImpl() |
| { |
| // Prevent onScriptLoaderFinished from deleting 'this'. |
| m_askedToTerminate = true; |
| |
| if (m_workerThread) |
| m_workerThread->terminateAndWait(); |
| |
| ASSERT(runningWorkerInstances().contains(this)); |
| runningWorkerInstances().remove(this); |
| ASSERT(m_webView); |
| |
| // Detach the client before closing the view to avoid getting called back. |
| m_mainFrame->setClient(0); |
| |
| m_webView->close(); |
| m_mainFrame->close(); |
| if (m_loaderProxy) |
| m_loaderProxy->detachProvider(this); |
| } |
| |
| void WebEmbeddedWorkerImpl::startWorkerContext( |
| const WebEmbeddedWorkerStartData& data) |
| { |
| ASSERT(!m_askedToTerminate); |
| ASSERT(!m_mainScriptLoader); |
| m_workerStartData = data; |
| prepareShadowPageForLoader(); |
| } |
| |
| void WebEmbeddedWorkerImpl::terminateWorkerContext() |
| { |
| if (m_askedToTerminate) |
| return; |
| m_askedToTerminate = true; |
| if (m_loadingShadowPage) { |
| // This deletes 'this'. |
| m_workerContextClient->workerContextFailedToStart(); |
| return; |
| } |
| if (m_mainScriptLoader) { |
| m_mainScriptLoader->cancel(); |
| m_mainScriptLoader.clear(); |
| // This deletes 'this'. |
| m_workerContextClient->workerContextFailedToStart(); |
| return; |
| } |
| if (m_workerThread) |
| m_workerThread->terminate(); |
| m_workerInspectorProxy->workerThreadTerminated(); |
| } |
| |
| void WebEmbeddedWorkerImpl::attachDevTools(const WebString& hostId) |
| { |
| WebDevToolsAgent* devtoolsAgent = m_mainFrame->devToolsAgent(); |
| if (devtoolsAgent) |
| devtoolsAgent->attach(hostId); |
| } |
| |
| void WebEmbeddedWorkerImpl::reattachDevTools(const WebString& hostId, const WebString& savedState) |
| { |
| WebDevToolsAgent* devtoolsAgent = m_mainFrame->devToolsAgent(); |
| if (devtoolsAgent) |
| devtoolsAgent->reattach(hostId, savedState); |
| resumeStartup(); |
| } |
| |
| void WebEmbeddedWorkerImpl::detachDevTools() |
| { |
| WebDevToolsAgent* devtoolsAgent = m_mainFrame->devToolsAgent(); |
| if (devtoolsAgent) |
| devtoolsAgent->detach(); |
| } |
| |
| void WebEmbeddedWorkerImpl::dispatchDevToolsMessage(const WebString& message) |
| { |
| if (m_askedToTerminate) |
| return; |
| WebDevToolsAgent* devtoolsAgent = m_mainFrame->devToolsAgent(); |
| if (devtoolsAgent) |
| devtoolsAgent->dispatchOnInspectorBackend(message); |
| } |
| |
| void WebEmbeddedWorkerImpl::postMessageToPageInspector(const String& message) |
| { |
| WorkerInspectorProxy::PageInspector* pageInspector = m_workerInspectorProxy->pageInspector(); |
| if (!pageInspector) |
| return; |
| pageInspector->dispatchMessageFromWorker(message); |
| } |
| |
| void WebEmbeddedWorkerImpl::postTaskToLoader(PassOwnPtr<ExecutionContextTask> task) |
| { |
| m_mainFrame->frame()->document()->postTask(FROM_HERE, task); |
| } |
| |
| bool WebEmbeddedWorkerImpl::postTaskToWorkerGlobalScope(PassOwnPtr<ExecutionContextTask> task) |
| { |
| if (m_askedToTerminate || !m_workerThread) |
| return false; |
| |
| m_workerThread->postTask(FROM_HERE, task); |
| return !m_workerThread->terminated(); |
| } |
| |
| 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); |
| WebSettings* settings = m_webView->settings(); |
| // FIXME: http://crbug.com/363843. This needs to find a better way to |
| // not create graphics layers. |
| settings->setAcceleratedCompositingEnabled(false); |
| // Currently we block all mixed-content requests from a ServiceWorker. |
| // FIXME: When we support FetchEvent.default(), we should relax this |
| // restriction. |
| settings->setStrictMixedContentChecking(true); |
| settings->setAllowDisplayOfInsecureContent(false); |
| settings->setAllowRunningOfInsecureContent(false); |
| m_mainFrame = toWebLocalFrameImpl(WebLocalFrame::create(WebTreeScopeType::Document, this)); |
| m_webView->setMainFrame(m_mainFrame); |
| m_mainFrame->setDevToolsAgentClient(this); |
| |
| // If we were asked to wait for debugger then it is the good time to do that. |
| m_workerContextClient->workerReadyForInspection(); |
| if (m_workerStartData.waitForDebuggerMode == WebEmbeddedWorkerStartData::WaitForDebugger) { |
| m_waitingForDebuggerState = WaitingForDebuggerBeforeLoadingScript; |
| return; |
| } |
| |
| loadShadowPage(); |
| } |
| |
| void WebEmbeddedWorkerImpl::loadShadowPage() |
| { |
| // 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)); |
| m_loadingShadowPage = true; |
| m_mainFrame->frame()->loader().load(FrameLoadRequest(0, ResourceRequest(m_workerStartData.scriptURL), SubstituteData(buffer, "text/html", "UTF-8", KURL()))); |
| } |
| |
| void WebEmbeddedWorkerImpl::willSendRequest( |
| WebLocalFrame* frame, unsigned, WebURLRequest& request, |
| const WebURLResponse& redirectResponse) |
| { |
| if (m_networkProvider) |
| m_networkProvider->willSendRequest(frame->dataSource(), request); |
| } |
| |
| void WebEmbeddedWorkerImpl::didFinishDocumentLoad(WebLocalFrame* frame, bool) |
| { |
| ASSERT(!m_mainScriptLoader); |
| ASSERT(!m_networkProvider); |
| ASSERT(m_mainFrame); |
| ASSERT(m_workerContextClient); |
| ASSERT(m_loadingShadowPage); |
| ASSERT(!m_askedToTerminate); |
| m_loadingShadowPage = false; |
| m_networkProvider = adoptPtr(m_workerContextClient->createServiceWorkerNetworkProvider(frame->dataSource())); |
| m_mainScriptLoader = adoptPtr(new WorkerScriptLoader()); |
| m_mainScriptLoader->setRequestContext(WebURLRequest::RequestContextServiceWorker); |
| m_mainScriptLoader->loadAsynchronously( |
| *m_mainFrame->frame()->document(), |
| m_workerStartData.scriptURL, |
| DenyCrossOriginRequests, |
| nullptr, |
| bind(&WebEmbeddedWorkerImpl::onScriptLoaderFinished, this)); |
| // Do nothing here since onScriptLoaderFinished() might have been already |
| // invoked and |this| might have been deleted at this point. |
| } |
| |
| void WebEmbeddedWorkerImpl::sendProtocolMessage(int callId, const WebString& message, const WebString& state) |
| { |
| m_workerContextClient->sendDevToolsMessage(callId, message, state); |
| } |
| |
| void WebEmbeddedWorkerImpl::resumeStartup() |
| { |
| WaitingForDebuggerState waitingForDebuggerState = m_waitingForDebuggerState; |
| m_waitingForDebuggerState = NotWaitingForDebugger; |
| if (waitingForDebuggerState == WaitingForDebuggerBeforeLoadingScript) |
| loadShadowPage(); |
| else if (waitingForDebuggerState == WaitingForDebuggerAfterScriptLoaded) |
| startWorkerThread(); |
| } |
| |
| void WebEmbeddedWorkerImpl::onScriptLoaderFinished() |
| { |
| ASSERT(m_mainScriptLoader); |
| |
| if (m_askedToTerminate) |
| return; |
| |
| if (m_mainScriptLoader->failed()) { |
| m_mainScriptLoader.clear(); |
| // This deletes 'this'. |
| m_workerContextClient->workerContextFailedToStart(); |
| return; |
| } |
| |
| Platform::current()->histogramCustomCounts("ServiceWorker.ScriptSize", m_mainScriptLoader->script().length(), 1000, 5000000, 50); |
| if (m_mainScriptLoader->cachedMetadata()) |
| Platform::current()->histogramCustomCounts("ServiceWorker.ScriptCachedMetadataSize", m_mainScriptLoader->cachedMetadata()->size(), 1000, 50000000, 50); |
| |
| startWorkerThread(); |
| } |
| |
| void WebEmbeddedWorkerImpl::startWorkerThread() |
| { |
| ASSERT(!m_askedToTerminate); |
| |
| Document* document = m_mainFrame->frame()->document(); |
| |
| WorkerThreadStartMode startMode = DontPauseWorkerGlobalScopeOnStart; |
| if (InspectorInstrumentation::shouldPauseDedicatedWorkerOnStart(document)) |
| startMode = PauseWorkerGlobalScopeOnStart; |
| |
| // FIXME: this document's origin is pristine and without any extra privileges. (crbug.com/254993) |
| SecurityOrigin* starterOrigin = document->securityOrigin(); |
| |
| OwnPtrWillBeRawPtr<WorkerClients> workerClients = WorkerClients::create(); |
| provideContentSettingsClientToWorker(workerClients.get(), m_contentSettingsClient.release()); |
| provideServiceWorkerGlobalScopeClientToWorker(workerClients.get(), ServiceWorkerGlobalScopeClientImpl::create(*m_workerContextClient)); |
| provideServiceWorkerContainerClientToWorker(workerClients.get(), adoptPtr(m_workerContextClient->createServiceWorkerProvider())); |
| |
| // We need to set the CSP to both the shadow page's document and the ServiceWorkerGlobalScope. |
| document->initContentSecurityPolicy(m_mainScriptLoader->releaseContentSecurityPolicy()); |
| |
| KURL scriptURL = m_mainScriptLoader->url(); |
| OwnPtr<WorkerThreadStartupData> startupData = WorkerThreadStartupData::create( |
| scriptURL, |
| m_workerStartData.userAgent, |
| m_mainScriptLoader->script(), |
| m_mainScriptLoader->releaseCachedMetadata(), |
| startMode, |
| document->contentSecurityPolicy()->headers(), |
| starterOrigin, |
| workerClients.release(), |
| static_cast<V8CacheOptions>(m_workerStartData.v8CacheOptions)); |
| |
| m_mainScriptLoader.clear(); |
| |
| m_workerGlobalScopeProxy = ServiceWorkerGlobalScopeProxy::create(*this, *document, *m_workerContextClient); |
| m_loaderProxy = WorkerLoaderProxy::create(this); |
| m_workerThread = ServiceWorkerThread::create(m_loaderProxy, *m_workerGlobalScopeProxy); |
| m_workerThread->start(startupData.release()); |
| m_workerInspectorProxy->workerThreadCreated(document, m_workerThread.get(), scriptURL); |
| } |
| |
| } // namespace blink |