src/third_party/WebKit/Source/web/SharedWorkerRepositoryClientImpl.cpp

   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
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  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  29  */
  30
  31 #include "config.h"
  32 #include "SharedWorkerRepositoryClientImpl.h"
  33
  34 #include "WebContentSecurityPolicy.h"
  35 #include "WebFrameClient.h"
  36 #include "WebFrameImpl.h"
  37 #include "WebKit.h"
  38 #include "WebSharedWorker.h"
  39 #include "WebSharedWorkerRepositoryClient.h"
  40 #include "bindings/v8/ExceptionMessages.h"
  41 #include "bindings/v8/ExceptionState.h"
  42 #include "core/dom/ExceptionCode.h"
  43 #include "core/dom/ExecutionContext.h"
  44 #include "core/events/Event.h"
  45 #include "core/events/ThreadLocalEventNames.h"
  46 #include "core/frame/ContentSecurityPolicy.h"
  47 #include "core/inspector/InspectorInstrumentation.h"
  48 #include "core/workers/SharedWorker.h"
  49 #include "core/workers/WorkerScriptLoader.h"
  50 #include "core/workers/WorkerScriptLoaderClient.h"
  51 #include "platform/network/ResourceResponse.h"
  52 #include "public/platform/WebMessagePortChannel.h"
  53 #include "public/platform/WebString.h"
  54 #include "public/platform/WebURL.h"
  55
  56 using namespace WebCore;
  57
  58 namespace blink {
  59
  60 // Callback class that keeps the SharedWorker and WebSharedWorker objects alive while connecting.
  61 class SharedWorkerConnector : private WebSharedWorkerConnector::ConnectListener {
  62 public:
  63     SharedWorkerConnector(PassRefPtr<SharedWorker> worker, const KURL& url, const String& name, PassOwnPtr<WebMessagePortChannel> channel, PassOwnPtr<WebSharedWorkerConnector> webWorkerConnector)
  64         : m_worker(worker)
  65         , m_url(url)
  66         , m_name(name)
  67         , m_webWorkerConnector(webWorkerConnector)
  68         , m_channel(channel) { }
  69
  70     virtual ~SharedWorkerConnector();
  71     void connect();
  72
  73 private:
  74     // WebSharedWorkerConnector::ConnectListener overrides.
  75     virtual void connected() OVERRIDE;
  76     virtual void scriptLoadFailed() OVERRIDE;
  77
  78     RefPtr<SharedWorker> m_worker;
  79     KURL m_url;
  80     String m_name;
  81     OwnPtr<WebSharedWorkerConnector> m_webWorkerConnector;
  82     OwnPtr<WebMessagePortChannel> m_channel;
  83 };
  84
  85 SharedWorkerConnector::~SharedWorkerConnector()
  86 {
  87     m_worker->unsetPreventGC();
  88 }
  89 void SharedWorkerConnector::connect()
  90 {
  91     m_worker->setPreventGC();
  92     m_webWorkerConnector->connect(m_channel.leakPtr(), this);
  93 }
  94
  95 void SharedWorkerConnector::connected()
  96 {
  97     // Free ourselves (this releases the SharedWorker so it can be freed as well if unreferenced).
  98     delete this;
  99 }
 100
 101 void SharedWorkerConnector::scriptLoadFailed()
 102 {
 103     m_worker->dispatchEvent(Event::createCancelable(EventTypeNames::error));
 104     // Free ourselves (this releases the SharedWorker so it can be freed as well if unreferenced).
 105     delete this;
 106 }
 107
 108 static WebSharedWorkerRepositoryClient::DocumentID getId(void* document)
 109 {
 110     ASSERT(document);
 111     return reinterpret_cast<WebSharedWorkerRepositoryClient::DocumentID>(document);
 112 }
 113
 114 void SharedWorkerRepositoryClientImpl::connect(PassRefPtr<SharedWorker> worker, PassOwnPtr<WebMessagePortChannel> port, const KURL& url, const String& name, ExceptionState& exceptionState)
 115 {
 116     ASSERT(m_client);
 117
 118     // No nested workers (for now) - connect() should only be called from document context.
 119     ASSERT(worker->executionContext()->isDocument());
 120     Document* document = toDocument(worker->executionContext());
 121     OwnPtr<WebSharedWorkerConnector> webWorkerConnector = adoptPtr(m_client->createSharedWorkerConnector(url, name, getId(document), worker->executionContext()->contentSecurityPolicy()->deprecatedHeader(), static_cast<blink::WebContentSecurityPolicyType>(worker->executionContext()->contentSecurityPolicy()->deprecatedHeaderType())));
 122     if (!webWorkerConnector) {
 123         // Existing worker does not match this url, so return an error back to the caller.
 124         exceptionState.throwDOMException(URLMismatchError, "The location of the SharedWorker named '" + name + "' does not exactly match the provided URL ('" + url.elidedString() + "').");
 125         return;
 126     }
 127
 128     // The connector object manages its own lifecycle (and the lifecycles of the two worker objects).
 129     // It will free itself once connecting is completed.
 130     SharedWorkerConnector* connector = new SharedWorkerConnector(worker, url, name, port, webWorkerConnector.release());
 131     connector->connect();
 132 }
 133
 134 void SharedWorkerRepositoryClientImpl::documentDetached(Document* document)
 135 {
 136     ASSERT(m_client);
 137     m_client->documentDetached(getId(document));
 138 }
 139
 140 SharedWorkerRepositoryClientImpl::SharedWorkerRepositoryClientImpl(WebSharedWorkerRepositoryClient* client)
 141     : m_client(client)
 142 {
 143 }
 144
 145 } // namespace blink