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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/core/v8/ExceptionMessages.h"
35 #include "bindings/core/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 namespace blink {
56 
57 // Callback class that keeps the SharedWorker and WebSharedWorker objects alive while connecting.
58 class SharedWorkerConnector : private WebSharedWorkerConnector::ConnectListener {
59 public:
SharedWorkerConnector(PassRefPtrWillBeRawPtr<SharedWorker> worker,const KURL & url,const String & name,PassOwnPtr<WebMessagePortChannel> channel,PassOwnPtr<WebSharedWorkerConnector> webWorkerConnector)60     SharedWorkerConnector(PassRefPtrWillBeRawPtr<SharedWorker> worker, const KURL& url, const String& name, PassOwnPtr<WebMessagePortChannel> channel, PassOwnPtr<WebSharedWorkerConnector> webWorkerConnector)
61         : m_worker(worker)
62         , m_url(url)
63         , m_name(name)
64         , m_webWorkerConnector(webWorkerConnector)
65         , m_channel(channel) { }
66 
67     virtual ~SharedWorkerConnector();
68     void connect();
69 
70 private:
71     // WebSharedWorkerConnector::ConnectListener overrides.
72     virtual void connected() OVERRIDE;
73     virtual void scriptLoadFailed() OVERRIDE;
74 
75     RefPtrWillBePersistent<SharedWorker> m_worker;
76     KURL m_url;
77     String m_name;
78     OwnPtr<WebSharedWorkerConnector> m_webWorkerConnector;
79     OwnPtr<WebMessagePortChannel> m_channel;
80 };
81 
~SharedWorkerConnector()82 SharedWorkerConnector::~SharedWorkerConnector()
83 {
84     m_worker->setIsBeingConnected(false);
85 }
86 
connect()87 void SharedWorkerConnector::connect()
88 {
89     m_worker->setIsBeingConnected(true);
90     m_webWorkerConnector->connect(m_channel.leakPtr(), this);
91 }
92 
connected()93 void SharedWorkerConnector::connected()
94 {
95     // Free ourselves (this releases the SharedWorker so it can be freed as well if unreferenced).
96     delete this;
97 }
98 
scriptLoadFailed()99 void SharedWorkerConnector::scriptLoadFailed()
100 {
101     m_worker->dispatchEvent(Event::createCancelable(EventTypeNames::error));
102     // Free ourselves (this releases the SharedWorker so it can be freed as well if unreferenced).
103     delete this;
104 }
105 
getId(void * document)106 static WebSharedWorkerRepositoryClient::DocumentID getId(void* document)
107 {
108     ASSERT(document);
109     return reinterpret_cast<WebSharedWorkerRepositoryClient::DocumentID>(document);
110 }
111 
connect(PassRefPtrWillBeRawPtr<SharedWorker> worker,PassOwnPtr<WebMessagePortChannel> port,const KURL & url,const String & name,ExceptionState & exceptionState)112 void SharedWorkerRepositoryClientImpl::connect(PassRefPtrWillBeRawPtr<SharedWorker> worker, PassOwnPtr<WebMessagePortChannel> port, const KURL& url, const String& name, ExceptionState& exceptionState)
113 {
114     ASSERT(m_client);
115 
116     // No nested workers (for now) - connect() should only be called from document context.
117     ASSERT(worker->executionContext()->isDocument());
118     Document* document = toDocument(worker->executionContext());
119     OwnPtr<WebSharedWorkerConnector> webWorkerConnector = adoptPtr(m_client->createSharedWorkerConnector(url, name, getId(document), worker->executionContext()->contentSecurityPolicy()->deprecatedHeader(), static_cast<WebContentSecurityPolicyType>(worker->executionContext()->contentSecurityPolicy()->deprecatedHeaderType())));
120     if (!webWorkerConnector) {
121         // Existing worker does not match this url, so return an error back to the caller.
122         exceptionState.throwDOMException(URLMismatchError, "The location of the SharedWorker named '" + name + "' does not exactly match the provided URL ('" + url.elidedString() + "').");
123         return;
124     }
125 
126     // The connector object manages its own lifecycle (and the lifecycles of the two worker objects).
127     // It will free itself once connecting is completed.
128     SharedWorkerConnector* connector = new SharedWorkerConnector(worker, url, name, port, webWorkerConnector.release());
129     connector->connect();
130 }
131 
documentDetached(Document * document)132 void SharedWorkerRepositoryClientImpl::documentDetached(Document* document)
133 {
134     ASSERT(m_client);
135     m_client->documentDetached(getId(document));
136 }
137 
SharedWorkerRepositoryClientImpl(WebSharedWorkerRepositoryClient * client)138 SharedWorkerRepositoryClientImpl::SharedWorkerRepositoryClientImpl(WebSharedWorkerRepositoryClient* client)
139     : m_client(client)
140 {
141 }
142 
143 } // namespace blink
144