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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) | 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) |
4 * (C) 2001 Dirk Mueller (mueller@kde.org) | 4 * (C) 2001 Dirk Mueller (mueller@kde.org) |
5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserv
ed. | 5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserv
ed. |
6 * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org> | 6 * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org> |
7 * | 7 * |
8 * This library is free software; you can redistribute it and/or | 8 * This library is free software; you can redistribute it and/or |
9 * modify it under the terms of the GNU Library General Public | 9 * modify it under the terms of the GNU Library General Public |
10 * License as published by the Free Software Foundation; either | 10 * License as published by the Free Software Foundation; either |
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29 #include "core/SVGNames.h" | 29 #include "core/SVGNames.h" |
30 #include "core/dom/Document.h" | 30 #include "core/dom/Document.h" |
31 #include "core/dom/IgnoreDestructiveWriteCountIncrementer.h" | 31 #include "core/dom/IgnoreDestructiveWriteCountIncrementer.h" |
32 #include "core/dom/ScriptLoaderClient.h" | 32 #include "core/dom/ScriptLoaderClient.h" |
33 #include "core/dom/ScriptRunner.h" | 33 #include "core/dom/ScriptRunner.h" |
34 #include "core/dom/ScriptableDocumentParser.h" | 34 #include "core/dom/ScriptableDocumentParser.h" |
35 #include "core/dom/Text.h" | 35 #include "core/dom/Text.h" |
36 #include "core/events/Event.h" | 36 #include "core/events/Event.h" |
37 #include "core/fetch/AccessControlStatus.h" | 37 #include "core/fetch/AccessControlStatus.h" |
38 #include "core/fetch/FetchRequest.h" | 38 #include "core/fetch/FetchRequest.h" |
| 39 #include "core/fetch/MemoryCache.h" |
39 #include "core/fetch/ResourceFetcher.h" | 40 #include "core/fetch/ResourceFetcher.h" |
40 #include "core/fetch/ScriptResource.h" | 41 #include "core/fetch/ScriptResource.h" |
41 #include "core/frame/LocalFrame.h" | 42 #include "core/frame/LocalFrame.h" |
42 #include "core/frame/SubresourceIntegrity.h" | 43 #include "core/frame/SubresourceIntegrity.h" |
43 #include "core/frame/UseCounter.h" | 44 #include "core/frame/UseCounter.h" |
44 #include "core/frame/csp/ContentSecurityPolicy.h" | 45 #include "core/frame/csp/ContentSecurityPolicy.h" |
45 #include "core/html/CrossOriginAttribute.h" | 46 #include "core/html/CrossOriginAttribute.h" |
46 #include "core/html/HTMLScriptElement.h" | 47 #include "core/html/HTMLScriptElement.h" |
47 #include "core/html/imports/HTMLImport.h" | 48 #include "core/html/imports/HTMLImport.h" |
48 #include "core/html/parser/HTMLParserIdioms.h" | 49 #include "core/html/parser/HTMLParserIdioms.h" |
49 #include "core/inspector/ConsoleMessage.h" | 50 #include "core/inspector/ConsoleMessage.h" |
50 #include "core/svg/SVGScriptElement.h" | 51 #include "core/svg/SVGScriptElement.h" |
51 #include "platform/MIMETypeRegistry.h" | 52 #include "platform/MIMETypeRegistry.h" |
52 #include "platform/weborigin/SecurityOrigin.h" | 53 #include "platform/weborigin/SecurityOrigin.h" |
| 54 #include "public/platform/WebCachePolicy.h" |
53 #include "public/platform/WebFrameScheduler.h" | 55 #include "public/platform/WebFrameScheduler.h" |
54 #include "wtf/StdLibExtras.h" | 56 #include "wtf/StdLibExtras.h" |
55 #include "wtf/text/StringBuilder.h" | 57 #include "wtf/text/StringBuilder.h" |
56 #include "wtf/text/StringHash.h" | 58 #include "wtf/text/StringHash.h" |
57 | 59 |
58 namespace blink { | 60 namespace blink { |
59 | 61 |
60 ScriptLoader::ScriptLoader(Element* element, bool parserInserted, bool alreadySt
arted, bool createdDuringDocumentWrite) | 62 ScriptLoader::ScriptLoader(Element* element, bool parserInserted, bool alreadySt
arted, bool createdDuringDocumentWrite, bool blockedDocWriteScriptAsyncFetch) |
61 : m_element(element) | 63 : m_element(element) |
62 , m_startLineNumber(WTF::OrdinalNumber::beforeFirst()) | 64 , m_startLineNumber(WTF::OrdinalNumber::beforeFirst()) |
63 , m_parserInserted(parserInserted) | 65 , m_parserInserted(parserInserted) |
64 , m_isExternalScript(false) | 66 , m_isExternalScript(false) |
65 , m_alreadyStarted(alreadyStarted) | 67 , m_alreadyStarted(alreadyStarted) |
66 , m_haveFiredLoad(false) | 68 , m_haveFiredLoad(false) |
67 , m_willBeParserExecuted(false) | 69 , m_willBeParserExecuted(false) |
68 , m_readyToBeParserExecuted(false) | 70 , m_readyToBeParserExecuted(false) |
69 , m_willExecuteInOrder(false) | 71 , m_willExecuteInOrder(false) |
70 , m_willExecuteWhenDocumentFinishedParsing(false) | 72 , m_willExecuteWhenDocumentFinishedParsing(false) |
71 , m_forceAsync(!parserInserted) | 73 , m_forceAsync(!parserInserted) |
72 , m_createdDuringDocumentWrite(createdDuringDocumentWrite) | 74 , m_createdDuringDocumentWrite(createdDuringDocumentWrite) |
| 75 , m_documentWriteIntervention(DocumentWriteIntervention::DocumentWriteInterv
entionNone) |
73 { | 76 { |
74 DCHECK(m_element); | 77 DCHECK(m_element); |
75 if (parserInserted && element->document().scriptableDocumentParser() && !ele
ment->document().isInDocumentWrite()) | 78 if (parserInserted && element->document().scriptableDocumentParser() && !ele
ment->document().isInDocumentWrite()) |
76 m_startLineNumber = element->document().scriptableDocumentParser()->line
Number(); | 79 m_startLineNumber = element->document().scriptableDocumentParser()->line
Number(); |
| 80 if (blockedDocWriteScriptAsyncFetch) { |
| 81 DCHECK(!m_createdDuringDocumentWrite); |
| 82 m_documentWriteIntervention = DocumentWriteIntervention::AsyncLowPriorit
yFetchForBlockedScript; |
| 83 } |
77 } | 84 } |
78 | 85 |
79 ScriptLoader::~ScriptLoader() | 86 ScriptLoader::~ScriptLoader() |
80 { | 87 { |
81 } | 88 } |
82 | 89 |
83 DEFINE_TRACE(ScriptLoader) | 90 DEFINE_TRACE(ScriptLoader) |
84 { | 91 { |
85 visitor->trace(m_element); | 92 visitor->trace(m_element); |
86 visitor->trace(m_resource); | 93 visitor->trace(m_resource); |
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231 if (!isScriptForEventSupported()) | 238 if (!isScriptForEventSupported()) |
232 return false; | 239 return false; |
233 | 240 |
234 if (!client->charsetAttributeValue().isEmpty()) | 241 if (!client->charsetAttributeValue().isEmpty()) |
235 m_characterEncoding = client->charsetAttributeValue(); | 242 m_characterEncoding = client->charsetAttributeValue(); |
236 else | 243 else |
237 m_characterEncoding = elementDocument.characterSet(); | 244 m_characterEncoding = elementDocument.characterSet(); |
238 | 245 |
239 if (client->hasSourceAttribute()) { | 246 if (client->hasSourceAttribute()) { |
240 FetchRequest::DeferOption defer = FetchRequest::NoDefer; | 247 FetchRequest::DeferOption defer = FetchRequest::NoDefer; |
241 if (!m_parserInserted || client->asyncAttributeValue() || client->deferA
ttributeValue()) | 248 if (!m_parserInserted || client->asyncAttributeValue() || client->deferA
ttributeValue() |
| 249 || m_documentWriteIntervention == DocumentWriteIntervention::AsyncLo
wPriorityFetchForBlockedScript) |
242 defer = FetchRequest::LazyLoad; | 250 defer = FetchRequest::LazyLoad; |
243 if (!fetchScript(client->sourceAttributeValue(), defer)) | 251 if (!fetchScript(client->sourceAttributeValue(), defer)) |
244 return false; | 252 return false; |
245 } | 253 } |
246 | 254 |
| 255 // Since the asynchronous, low priority fetch for doc.written blocked |
| 256 // script is not for execution, return early from here. Watch for its |
| 257 // completion to be able to remove it from the memory cache. |
| 258 if (m_documentWriteIntervention == DocumentWriteIntervention::AsyncLowPriori
tyFetchForBlockedScript) { |
| 259 m_pendingScript = PendingScript::create(m_element, m_resource.get()); |
| 260 m_pendingScript->watchForLoad(this); |
| 261 return true; |
| 262 } |
| 263 |
247 if (client->hasSourceAttribute() && client->deferAttributeValue() && m_parse
rInserted && !client->asyncAttributeValue()) { | 264 if (client->hasSourceAttribute() && client->deferAttributeValue() && m_parse
rInserted && !client->asyncAttributeValue()) { |
248 m_willExecuteWhenDocumentFinishedParsing = true; | 265 m_willExecuteWhenDocumentFinishedParsing = true; |
249 m_willBeParserExecuted = true; | 266 m_willBeParserExecuted = true; |
250 } else if (client->hasSourceAttribute() && m_parserInserted && !client->asyn
cAttributeValue()) { | 267 } else if (client->hasSourceAttribute() && m_parserInserted && !client->asyn
cAttributeValue()) { |
251 m_willBeParserExecuted = true; | 268 m_willBeParserExecuted = true; |
252 } else if (!client->hasSourceAttribute() && m_parserInserted && !elementDocu
ment.isScriptExecutionReady()) { | 269 } else if (!client->hasSourceAttribute() && m_parserInserted && !elementDocu
ment.isScriptExecutionReady()) { |
253 m_willBeParserExecuted = true; | 270 m_willBeParserExecuted = true; |
254 m_readyToBeParserExecuted = true; | 271 m_readyToBeParserExecuted = true; |
255 } else if (client->hasSourceAttribute() && !client->asyncAttributeValue() &&
!m_forceAsync) { | 272 } else if (client->hasSourceAttribute() && !client->asyncAttributeValue() &&
!m_forceAsync) { |
256 m_pendingScript = PendingScript::create(m_element, m_resource.get()); | 273 m_pendingScript = PendingScript::create(m_element, m_resource.get()); |
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310 } | 327 } |
311 request.setDefer(defer); | 328 request.setDefer(defer); |
312 | 329 |
313 String integrityAttr = m_element->fastGetAttribute(HTMLNames::integrityA
ttr); | 330 String integrityAttr = m_element->fastGetAttribute(HTMLNames::integrityA
ttr); |
314 if (!integrityAttr.isEmpty()) { | 331 if (!integrityAttr.isEmpty()) { |
315 IntegrityMetadataSet metadataSet; | 332 IntegrityMetadataSet metadataSet; |
316 SubresourceIntegrity::parseIntegrityAttribute(integrityAttr, metadat
aSet, elementDocument); | 333 SubresourceIntegrity::parseIntegrityAttribute(integrityAttr, metadat
aSet, elementDocument); |
317 request.setIntegrityMetadata(metadataSet); | 334 request.setIntegrityMetadata(metadataSet); |
318 } | 335 } |
319 | 336 |
| 337 if (m_documentWriteIntervention == DocumentWriteIntervention::AsyncLowPr
iorityFetchForBlockedScript) { |
| 338 // Set interventions info in resourceRequest so that priority can |
| 339 // be set accordingly. |
| 340 request.mutableResourceRequest().setInterventionsInfo(InterventionsF
lag::InterventionBlockedDocWriteScriptAsyncFetch); |
| 341 request.mutableResourceRequest().setHTTPHeaderField("Intervention",
"<https://www.chromestatus.com/feature/5718547946799104>"); |
| 342 } |
| 343 |
320 m_resource = ScriptResource::fetch(request, elementDocument->fetcher()); | 344 m_resource = ScriptResource::fetch(request, elementDocument->fetcher()); |
321 | 345 |
322 m_isExternalScript = true; | 346 m_isExternalScript = true; |
323 } | 347 } |
324 | 348 |
325 if (m_resource) | 349 if (!m_resource) { |
326 return true; | 350 dispatchErrorEvent(); |
| 351 return false; |
| 352 } |
327 | 353 |
328 dispatchErrorEvent(); | 354 if (m_createdDuringDocumentWrite && m_resource->resourceRequest().getCachePo
licy() == WebCachePolicy::ReturnCacheDataDontLoad) { |
329 return false; | 355 m_documentWriteIntervention = DocumentWriteIntervention::DisallowedFetch
ForDocWrittenScript; |
| 356 } |
| 357 |
| 358 return true; |
330 } | 359 } |
331 | 360 |
332 bool isHTMLScriptLoader(Element* element) | 361 bool isHTMLScriptLoader(Element* element) |
333 { | 362 { |
334 DCHECK(element); | 363 DCHECK(element); |
335 return isHTMLScriptElement(*element); | 364 return isHTMLScriptElement(*element); |
336 } | 365 } |
337 | 366 |
338 bool isSVGScriptLoader(Element* element) | 367 bool isSVGScriptLoader(Element* element) |
339 { | 368 { |
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452 else | 481 else |
453 dispatchErrorEvent(); | 482 dispatchErrorEvent(); |
454 } | 483 } |
455 m_resource = nullptr; | 484 m_resource = nullptr; |
456 } | 485 } |
457 | 486 |
458 void ScriptLoader::notifyFinished(Resource* resource) | 487 void ScriptLoader::notifyFinished(Resource* resource) |
459 { | 488 { |
460 DCHECK(!m_willBeParserExecuted); | 489 DCHECK(!m_willBeParserExecuted); |
461 | 490 |
| 491 // We do not need this script in the memory cache. The primary goals of |
| 492 // sending this fetch request are to let the third party server know |
| 493 // about the document.write scripts intervention and populate the http |
| 494 // cache for subsequent uses. |
| 495 if (m_documentWriteIntervention == DocumentWriteIntervention::AsyncLowPriori
tyFetchForBlockedScript) { |
| 496 memoryCache()->remove(resource); |
| 497 m_pendingScript->stopWatchingForLoad(); |
| 498 return; |
| 499 } |
| 500 |
462 Document* contextDocument = m_element->document().contextDocument(); | 501 Document* contextDocument = m_element->document().contextDocument(); |
463 if (!contextDocument) { | 502 if (!contextDocument) { |
464 detach(); | 503 detach(); |
465 return; | 504 return; |
466 } | 505 } |
467 | 506 |
468 ASSERT_UNUSED(resource, resource == m_resource); | 507 ASSERT_UNUSED(resource, resource == m_resource); |
469 | 508 |
470 ScriptRunner::ExecutionType runOrder = m_willExecuteInOrder ? ScriptRunner::
IN_ORDER_EXECUTION : ScriptRunner::ASYNC_EXECUTION; | 509 ScriptRunner::ExecutionType runOrder = m_willExecuteInOrder ? ScriptRunner::
IN_ORDER_EXECUTION : ScriptRunner::ASYNC_EXECUTION; |
471 if (m_resource->errorOccurred()) { | 510 if (m_resource->errorOccurred()) { |
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519 if (isHTMLScriptLoader(element)) | 558 if (isHTMLScriptLoader(element)) |
520 return toHTMLScriptElement(element)->loader(); | 559 return toHTMLScriptElement(element)->loader(); |
521 | 560 |
522 if (isSVGScriptLoader(element)) | 561 if (isSVGScriptLoader(element)) |
523 return toSVGScriptElement(element)->loader(); | 562 return toSVGScriptElement(element)->loader(); |
524 | 563 |
525 return 0; | 564 return 0; |
526 } | 565 } |
527 | 566 |
528 } // namespace blink | 567 } // namespace blink |
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