Home | History | Annotate | Download | only in web 
      1 /*
      2  * Copyright (C) 2009 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "web/SharedWorkerRepositoryClientImpl.h"
     33 
     34 #include "bindings/v8/ExceptionMessages.h"
     35 #include "bindings/v8/ExceptionState.h"
     36 #include "core/dom/ExceptionCode.h"
     37 #include "core/dom/ExecutionContext.h"
     38 #include "core/events/Event.h"
     39 #include "core/frame/csp/ContentSecurityPolicy.h"
     40 #include "core/inspector/InspectorInstrumentation.h"
     41 #include "core/workers/SharedWorker.h"
     42 #include "core/workers/WorkerScriptLoader.h"
     43 #include "core/workers/WorkerScriptLoaderClient.h"
     44 #include "platform/network/ResourceResponse.h"
     45 #include "public/platform/WebMessagePortChannel.h"
     46 #include "public/platform/WebString.h"
     47 #include "public/platform/WebURL.h"
     48 #include "public/web/WebContentSecurityPolicy.h"
     49 #include "public/web/WebFrameClient.h"
     50 #include "public/web/WebKit.h"
     51 #include "public/web/WebSharedWorker.h"
     52 #include "public/web/WebSharedWorkerRepositoryClient.h"
     53 #include "web/WebLocalFrameImpl.h"
     54 
     55 using namespace WebCore;
     56 
     57 namespace blink {
     58 
     59 // Callback class that keeps the SharedWorker and WebSharedWorker objects alive while connecting.
     60 class SharedWorkerConnector : private WebSharedWorkerConnector::ConnectListener {
     61 public:
     62     SharedWorkerConnector(PassRefPtrWillBeRawPtr<SharedWorker> worker, const KURL& url, const String& name, PassOwnPtr<WebMessagePortChannel> channel, PassOwnPtr<WebSharedWorkerConnector> webWorkerConnector)
     63         : m_worker(worker)
     64         , m_url(url)
     65         , m_name(name)
     66         , m_webWorkerConnector(webWorkerConnector)
     67         , m_channel(channel) { }
     68 
     69     virtual ~SharedWorkerConnector();
     70     void connect();
     71 
     72 private:
     73     // WebSharedWorkerConnector::ConnectListener overrides.
     74     virtual void connected() OVERRIDE;
     75     virtual void scriptLoadFailed() OVERRIDE;
     76 
     77     RefPtrWillBePersistent<SharedWorker> m_worker;
     78     KURL m_url;
     79     String m_name;
     80     OwnPtr<WebSharedWorkerConnector> m_webWorkerConnector;
     81     OwnPtr<WebMessagePortChannel> m_channel;
     82 };
     83 
     84 SharedWorkerConnector::~SharedWorkerConnector()
     85 {
     86     m_worker->unsetPreventGC();
     87 }
     88 void SharedWorkerConnector::connect()
     89 {
     90     m_worker->setPreventGC();
     91     m_webWorkerConnector->connect(m_channel.leakPtr(), this);
     92 }
     93 
     94 void SharedWorkerConnector::connected()
     95 {
     96     // Free ourselves (this releases the SharedWorker so it can be freed as well if unreferenced).
     97     delete this;
     98 }
     99 
    100 void SharedWorkerConnector::scriptLoadFailed()
    101 {
    102     m_worker->dispatchEvent(Event::createCancelable(EventTypeNames::error));
    103     // Free ourselves (this releases the SharedWorker so it can be freed as well if unreferenced).
    104     delete this;
    105 }
    106 
    107 static WebSharedWorkerRepositoryClient::DocumentID getId(void* document)
    108 {
    109     ASSERT(document);
    110     return reinterpret_cast<WebSharedWorkerRepositoryClient::DocumentID>(document);
    111 }
    112 
    113 void SharedWorkerRepositoryClientImpl::connect(PassRefPtrWillBeRawPtr<SharedWorker> worker, PassOwnPtr<WebMessagePortChannel> port, const KURL& url, const String& name, ExceptionState& exceptionState)
    114 {
    115     ASSERT(m_client);
    116 
    117     // No nested workers (for now) - connect() should only be called from document context.
    118     ASSERT(worker->executionContext()->isDocument());
    119     Document* document = toDocument(worker->executionContext());
    120     OwnPtr<WebSharedWorkerConnector> webWorkerConnector = adoptPtr(m_client->createSharedWorkerConnector(url, name, getId(document), worker->executionContext()->contentSecurityPolicy()->deprecatedHeader(), static_cast<blink::WebContentSecurityPolicyType>(worker->executionContext()->contentSecurityPolicy()->deprecatedHeaderType())));
    121     if (!webWorkerConnector) {
    122         // Existing worker does not match this url, so return an error back to the caller.
    123         exceptionState.throwDOMException(URLMismatchError, "The location of the SharedWorker named '" + name + "' does not exactly match the provided URL ('" + url.elidedString() + "').");
    124         return;
    125     }
    126 
    127     // The connector object manages its own lifecycle (and the lifecycles of the two worker objects).
    128     // It will free itself once connecting is completed.
    129     SharedWorkerConnector* connector = new SharedWorkerConnector(worker, url, name, port, webWorkerConnector.release());
    130     connector->connect();
    131 }
    132 
    133 void SharedWorkerRepositoryClientImpl::documentDetached(Document* document)
    134 {
    135     ASSERT(m_client);
    136     m_client->documentDetached(getId(document));
    137 }
    138 
    139 SharedWorkerRepositoryClientImpl::SharedWorkerRepositoryClientImpl(WebSharedWorkerRepositoryClient* client)
    140     : m_client(client)
    141 {
    142 }
    143 
    144 } // namespace blink
    145