1 /*
2 * Copyright (C) 2009 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2009, 2011 Google Inc. All Rights Reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27
28 #include "config.h"
29 #include "core/workers/WorkerScriptLoader.h"
30
31 #include "core/dom/ExecutionContext.h"
32 #include "core/html/parser/TextResourceDecoder.h"
33 #include "core/loader/WorkerThreadableLoader.h"
34 #include "core/workers/WorkerGlobalScope.h"
35 #include "core/workers/WorkerScriptLoaderClient.h"
36 #include "platform/network/ResourceResponse.h"
37 #include "public/platform/WebURLRequest.h"
38
39 #include "wtf/OwnPtr.h"
40 #include "wtf/RefPtr.h"
41
42 namespace blink {
43
WorkerScriptLoader()44 WorkerScriptLoader::WorkerScriptLoader()
45 : m_client(0)
46 , m_failed(false)
47 , m_identifier(0)
48 , m_finishing(false)
49 , m_requestContext(blink::WebURLRequest::RequestContextWorker)
50 {
51 }
52
~WorkerScriptLoader()53 WorkerScriptLoader::~WorkerScriptLoader()
54 {
55 }
56
loadSynchronously(ExecutionContext & executionContext,const KURL & url,CrossOriginRequestPolicy crossOriginRequestPolicy)57 void WorkerScriptLoader::loadSynchronously(ExecutionContext& executionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy)
58 {
59 m_url = url;
60
61 OwnPtr<ResourceRequest> request(createResourceRequest());
62 if (!request)
63 return;
64
65 ASSERT_WITH_SECURITY_IMPLICATION(executionContext.isWorkerGlobalScope());
66
67 ThreadableLoaderOptions options;
68 options.crossOriginRequestPolicy = crossOriginRequestPolicy;
69 // FIXME: Should we add EnforceScriptSrcDirective here?
70 options.contentSecurityPolicyEnforcement = DoNotEnforceContentSecurityPolicy;
71
72 ResourceLoaderOptions resourceLoaderOptions;
73 resourceLoaderOptions.allowCredentials = AllowStoredCredentials;
74
75 WorkerThreadableLoader::loadResourceSynchronously(toWorkerGlobalScope(executionContext), *request, *this, options, resourceLoaderOptions);
76 }
77
loadAsynchronously(ExecutionContext & executionContext,const KURL & url,CrossOriginRequestPolicy crossOriginRequestPolicy,WorkerScriptLoaderClient * client)78 void WorkerScriptLoader::loadAsynchronously(ExecutionContext& executionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy, WorkerScriptLoaderClient* client)
79 {
80 ASSERT(client);
81 m_client = client;
82 m_url = url;
83
84 OwnPtr<ResourceRequest> request(createResourceRequest());
85 if (!request)
86 return;
87
88 ThreadableLoaderOptions options;
89 options.crossOriginRequestPolicy = crossOriginRequestPolicy;
90
91 ResourceLoaderOptions resourceLoaderOptions;
92 resourceLoaderOptions.allowCredentials = AllowStoredCredentials;
93
94 // During create, callbacks may happen which remove the last reference to this object.
95 RefPtr<WorkerScriptLoader> protect(this);
96 m_threadableLoader = ThreadableLoader::create(executionContext, this, *request, options, resourceLoaderOptions);
97 }
98
responseURL() const99 const KURL& WorkerScriptLoader::responseURL() const
100 {
101 ASSERT(!failed());
102 return m_responseURL;
103 }
104
createResourceRequest()105 PassOwnPtr<ResourceRequest> WorkerScriptLoader::createResourceRequest()
106 {
107 OwnPtr<ResourceRequest> request = adoptPtr(new ResourceRequest(m_url));
108 request->setHTTPMethod("GET");
109 request->setRequestContext(m_requestContext);
110 return request.release();
111 }
112
didReceiveResponse(unsigned long identifier,const ResourceResponse & response)113 void WorkerScriptLoader::didReceiveResponse(unsigned long identifier, const ResourceResponse& response)
114 {
115 if (response.httpStatusCode() / 100 != 2 && response.httpStatusCode()) {
116 m_failed = true;
117 return;
118 }
119 m_responseURL = response.url();
120 m_responseEncoding = response.textEncodingName();
121 if (m_client)
122 m_client->didReceiveResponse(identifier, response);
123 }
124
didReceiveData(const char * data,int len)125 void WorkerScriptLoader::didReceiveData(const char* data, int len)
126 {
127 if (m_failed)
128 return;
129
130 if (!m_decoder) {
131 if (!m_responseEncoding.isEmpty())
132 m_decoder = TextResourceDecoder::create("text/javascript", m_responseEncoding);
133 else
134 m_decoder = TextResourceDecoder::create("text/javascript", "UTF-8");
135 }
136
137 if (!len)
138 return;
139
140 if (len == -1)
141 len = strlen(data);
142
143 m_script.append(m_decoder->decode(data, len));
144 }
145
didFinishLoading(unsigned long identifier,double)146 void WorkerScriptLoader::didFinishLoading(unsigned long identifier, double)
147 {
148 if (m_failed) {
149 notifyError();
150 return;
151 }
152
153 if (m_decoder)
154 m_script.append(m_decoder->flush());
155
156 m_identifier = identifier;
157 notifyFinished();
158 }
159
didFail(const ResourceError &)160 void WorkerScriptLoader::didFail(const ResourceError&)
161 {
162 notifyError();
163 }
164
didFailRedirectCheck()165 void WorkerScriptLoader::didFailRedirectCheck()
166 {
167 notifyError();
168 }
169
notifyError()170 void WorkerScriptLoader::notifyError()
171 {
172 m_failed = true;
173 notifyFinished();
174 }
175
cancel()176 void WorkerScriptLoader::cancel()
177 {
178 if (m_threadableLoader)
179 m_threadableLoader->cancel();
180 }
181
script()182 String WorkerScriptLoader::script()
183 {
184 return m_script.toString();
185 }
186
notifyFinished()187 void WorkerScriptLoader::notifyFinished()
188 {
189 if (!m_client || m_finishing)
190 return;
191
192 m_finishing = true;
193 m_client->notifyFinished();
194 }
195
196 } // namespace blink
197