1 | /* |
2 | * Copyright (C) 2006-2019 Apple 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 |
6 | * are met: |
7 | * |
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 | * 3. Neither the name of Apple Inc. ("Apple") nor the names of |
14 | * its contributors may be used to endorse or promote products derived |
15 | * from this software without specific prior written permission. |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
18 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
20 | * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
23 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
24 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | #include "config.h" |
30 | #include "SubresourceLoader.h" |
31 | |
32 | #include "CachedRawResource.h" |
33 | #include "CachedResourceLoader.h" |
34 | #include "CrossOriginAccessControl.h" |
35 | #include "DiagnosticLoggingClient.h" |
36 | #include "DiagnosticLoggingKeys.h" |
37 | #include "Document.h" |
38 | #include "DocumentLoader.h" |
39 | #include "Frame.h" |
40 | #include "FrameLoader.h" |
41 | #include "HTTPParsers.h" |
42 | #include "LinkLoader.h" |
43 | #include "Logging.h" |
44 | #include "MemoryCache.h" |
45 | #include "Page.h" |
46 | #include "ResourceLoadObserver.h" |
47 | #include "ResourceTiming.h" |
48 | #include "RuntimeEnabledFeatures.h" |
49 | #include "Settings.h" |
50 | #include <wtf/CompletionHandler.h> |
51 | #include <wtf/Ref.h> |
52 | #include <wtf/RefCountedLeakCounter.h> |
53 | #include <wtf/StdLibExtras.h> |
54 | #include <wtf/SystemTracing.h> |
55 | #include <wtf/text/CString.h> |
56 | |
57 | #if PLATFORM(IOS_FAMILY) |
58 | #include <RuntimeApplicationChecks.h> |
59 | #endif |
60 | |
61 | #if ENABLE(CONTENT_EXTENSIONS) |
62 | #include "ResourceLoadInfo.h" |
63 | #endif |
64 | |
65 | #if USE(QUICK_LOOK) |
66 | #include "PreviewConverter.h" |
67 | #include "PreviewLoader.h" |
68 | #endif |
69 | |
70 | #undef RELEASE_LOG_IF_ALLOWED |
71 | #undef RELEASE_LOG_ERROR_IF_ALLOWED |
72 | #define RELEASE_LOG_IF_ALLOWED(fmt, ...) RELEASE_LOG_IF(isAlwaysOnLoggingAllowed(), ResourceLoading, "%p - SubresourceLoader::" fmt, this, ##__VA_ARGS__) |
73 | #define RELEASE_LOG_ERROR_IF_ALLOWED(fmt, ...) RELEASE_LOG_ERROR_IF(isAlwaysOnLoggingAllowed(), ResourceLoading, "%p - SubresourceLoader::" fmt, this, ##__VA_ARGS__) |
74 | |
75 | namespace WebCore { |
76 | |
77 | DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, subresourceLoaderCounter, ("SubresourceLoader" )); |
78 | |
79 | SubresourceLoader::RequestCountTracker::RequestCountTracker(CachedResourceLoader& cachedResourceLoader, const CachedResource& resource) |
80 | : m_cachedResourceLoader(cachedResourceLoader) |
81 | , m_resource(resource) |
82 | { |
83 | m_cachedResourceLoader.incrementRequestCount(m_resource); |
84 | } |
85 | |
86 | SubresourceLoader::RequestCountTracker::~RequestCountTracker() |
87 | { |
88 | m_cachedResourceLoader.decrementRequestCount(m_resource); |
89 | } |
90 | |
91 | SubresourceLoader::SubresourceLoader(Frame& frame, CachedResource& resource, const ResourceLoaderOptions& options) |
92 | : ResourceLoader(frame, options) |
93 | , m_resource(&resource) |
94 | , m_state(Uninitialized) |
95 | , m_requestCountTracker(std::in_place, frame.document()->cachedResourceLoader(), resource) |
96 | { |
97 | #ifndef NDEBUG |
98 | subresourceLoaderCounter.increment(); |
99 | #endif |
100 | #if ENABLE(CONTENT_EXTENSIONS) |
101 | m_resourceType = ContentExtensions::toResourceType(resource.type()); |
102 | #endif |
103 | m_canCrossOriginRequestsAskUserForCredentials = resource.type() == CachedResource::Type::MainResource || frame.settings().allowCrossOriginSubresourcesToAskForCredentials(); |
104 | } |
105 | |
106 | SubresourceLoader::~SubresourceLoader() |
107 | { |
108 | ASSERT(m_state != Initialized); |
109 | ASSERT(reachedTerminalState()); |
110 | #ifndef NDEBUG |
111 | subresourceLoaderCounter.decrement(); |
112 | #endif |
113 | } |
114 | |
115 | void SubresourceLoader::create(Frame& frame, CachedResource& resource, ResourceRequest&& request, const ResourceLoaderOptions& options, CompletionHandler<void(RefPtr<SubresourceLoader>&&)>&& completionHandler) |
116 | { |
117 | auto subloader(adoptRef(*new SubresourceLoader(frame, resource, options))); |
118 | #if PLATFORM(IOS_FAMILY) |
119 | if (!IOSApplication::isWebProcess()) { |
120 | // On iOS, do not invoke synchronous resource load delegates while resource load scheduling |
121 | // is disabled to avoid re-entering style selection from a different thread (see <rdar://problem/9121719>). |
122 | // FIXME: This should be fixed for all ports in <https://bugs.webkit.org/show_bug.cgi?id=56647>. |
123 | subloader->m_iOSOriginalRequest = request; |
124 | return completionHandler(WTFMove(subloader)); |
125 | } |
126 | #endif |
127 | subloader->init(WTFMove(request), [subloader = subloader.copyRef(), completionHandler = WTFMove(completionHandler)] (bool initialized) mutable { |
128 | if (!initialized) |
129 | return completionHandler(nullptr); |
130 | completionHandler(WTFMove(subloader)); |
131 | }); |
132 | } |
133 | |
134 | #if PLATFORM(IOS_FAMILY) |
135 | void SubresourceLoader::startLoading() |
136 | { |
137 | // FIXME: this should probably be removed. |
138 | ASSERT(!IOSApplication::isWebProcess()); |
139 | init(ResourceRequest(m_iOSOriginalRequest), [this, protectedThis = makeRef(*this)] (bool success) { |
140 | if (!success) |
141 | return; |
142 | m_iOSOriginalRequest = ResourceRequest(); |
143 | start(); |
144 | }); |
145 | } |
146 | #endif |
147 | |
148 | CachedResource* SubresourceLoader::cachedResource() |
149 | { |
150 | return m_resource; |
151 | } |
152 | |
153 | void SubresourceLoader::cancelIfNotFinishing() |
154 | { |
155 | if (m_state != Initialized) |
156 | return; |
157 | |
158 | ResourceLoader::cancel(); |
159 | } |
160 | |
161 | void SubresourceLoader::init(ResourceRequest&& request, CompletionHandler<void(bool)>&& completionHandler) |
162 | { |
163 | ResourceLoader::init(WTFMove(request), [this, protectedThis = makeRef(*this), completionHandler = WTFMove(completionHandler)] (bool initialized) mutable { |
164 | if (!initialized) |
165 | return completionHandler(false); |
166 | ASSERT(!reachedTerminalState()); |
167 | m_state = Initialized; |
168 | m_documentLoader->addSubresourceLoader(this); |
169 | m_origin = m_resource->origin(); |
170 | completionHandler(true); |
171 | }); |
172 | } |
173 | |
174 | bool SubresourceLoader::isSubresourceLoader() const |
175 | { |
176 | return true; |
177 | } |
178 | |
179 | void SubresourceLoader::willSendRequestInternal(ResourceRequest&& newRequest, const ResourceResponse& redirectResponse, CompletionHandler<void(ResourceRequest&&)>&& completionHandler) |
180 | { |
181 | // Store the previous URL because the call to ResourceLoader::willSendRequest will modify it. |
182 | URL previousURL = request().url(); |
183 | Ref<SubresourceLoader> protectedThis(*this); |
184 | |
185 | if (!newRequest.url().isValid()) { |
186 | cancel(cannotShowURLError()); |
187 | return completionHandler(WTFMove(newRequest)); |
188 | } |
189 | |
190 | if (newRequest.requester() != ResourceRequestBase::Requester::Main) { |
191 | tracePoint(SubresourceLoadWillStart); |
192 | ResourceLoadObserver::shared().logSubresourceLoading(m_frame.get(), newRequest, redirectResponse); |
193 | } |
194 | |
195 | auto continueWillSendRequest = [this, protectedThis = makeRef(*this), redirectResponse] (CompletionHandler<void(ResourceRequest&&)>&& completionHandler, ResourceRequest&& newRequest) mutable { |
196 | if (newRequest.isNull() || reachedTerminalState()) |
197 | return completionHandler(WTFMove(newRequest)); |
198 | |
199 | ResourceLoader::willSendRequestInternal(WTFMove(newRequest), redirectResponse, [this, protectedThis = WTFMove(protectedThis), completionHandler = WTFMove(completionHandler), redirectResponse] (ResourceRequest&& request) mutable { |
200 | if (reachedTerminalState()) |
201 | return completionHandler(WTFMove(request)); |
202 | |
203 | if (request.isNull()) { |
204 | cancel(); |
205 | return completionHandler(WTFMove(request)); |
206 | } |
207 | |
208 | if (m_resource->type() == CachedResource::Type::MainResource && !redirectResponse.isNull()) |
209 | m_documentLoader->willContinueMainResourceLoadAfterRedirect(request); |
210 | completionHandler(WTFMove(request)); |
211 | }); |
212 | }; |
213 | |
214 | ASSERT(!newRequest.isNull()); |
215 | if (!redirectResponse.isNull()) { |
216 | if (options().redirect != FetchOptions::Redirect::Follow) { |
217 | if (options().redirect == FetchOptions::Redirect::Error) { |
218 | ResourceError error { errorDomainWebKitInternal, 0, request().url(), makeString("Not allowed to follow a redirection while loading " , request().url().string()), ResourceError::Type::AccessControl }; |
219 | |
220 | if (m_frame && m_frame->document()) |
221 | m_frame->document()->addConsoleMessage(MessageSource::Security, MessageLevel::Error, error.localizedDescription()); |
222 | |
223 | RELEASE_LOG_IF_ALLOWED("willSendRequestinternal: resource load canceled because not allowed to follow a redirect (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
224 | |
225 | cancel(error); |
226 | return completionHandler(WTFMove(newRequest)); |
227 | } |
228 | |
229 | ResourceResponse opaqueRedirectedResponse = redirectResponse; |
230 | opaqueRedirectedResponse.setType(ResourceResponse::Type::Opaqueredirect); |
231 | opaqueRedirectedResponse.setTainting(ResourceResponse::Tainting::Opaqueredirect); |
232 | m_resource->responseReceived(opaqueRedirectedResponse); |
233 | if (reachedTerminalState()) { |
234 | RELEASE_LOG_IF_ALLOWED("willSendRequestinternal: reached terminal state (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
235 | return; |
236 | } |
237 | |
238 | RELEASE_LOG_IF_ALLOWED("willSendRequestinternal: resource load completed (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
239 | |
240 | NetworkLoadMetrics emptyMetrics; |
241 | didFinishLoading(emptyMetrics); |
242 | return completionHandler(WTFMove(newRequest)); |
243 | } else if (m_redirectCount++ >= options().maxRedirectCount) { |
244 | RELEASE_LOG_IF_ALLOWED("willSendRequestinternal: resource load canceled because too many redirects (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
245 | cancel(ResourceError(String(), 0, request().url(), "Too many redirections"_s , ResourceError::Type::General)); |
246 | return completionHandler(WTFMove(newRequest)); |
247 | } |
248 | |
249 | // CachedResources are keyed off their original request URL. |
250 | // Requesting the same original URL a second time can redirect to a unique second resource. |
251 | // Therefore, if a redirect to a different destination URL occurs, we should no longer consider this a revalidation of the first resource. |
252 | // Doing so would have us reusing the resource from the first request if the second request's revalidation succeeds. |
253 | if (newRequest.isConditional() && m_resource->resourceToRevalidate() && newRequest.url() != m_resource->resourceToRevalidate()->response().url()) { |
254 | newRequest.makeUnconditional(); |
255 | MemoryCache::singleton().revalidationFailed(*m_resource); |
256 | if (m_frame && m_frame->page()) |
257 | m_frame->page()->diagnosticLoggingClient().logDiagnosticMessageWithResult(DiagnosticLoggingKeys::cachedResourceRevalidationKey(), emptyString(), DiagnosticLoggingResultFail, ShouldSample::Yes); |
258 | } |
259 | |
260 | if (!m_documentLoader->cachedResourceLoader().updateRequestAfterRedirection(m_resource->type(), newRequest, options())) { |
261 | RELEASE_LOG_IF_ALLOWED("willSendRequestinternal: resource load canceled because something about updateRequestAfterRedirection (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
262 | cancel(); |
263 | return completionHandler(WTFMove(newRequest)); |
264 | } |
265 | |
266 | String errorDescription; |
267 | if (!checkRedirectionCrossOriginAccessControl(request(), redirectResponse, newRequest, errorDescription)) { |
268 | String errorMessage = "Cross-origin redirection to " + newRequest.url().string() + " denied by Cross-Origin Resource Sharing policy: " + errorDescription; |
269 | if (m_frame && m_frame->document()) |
270 | m_frame->document()->addConsoleMessage(MessageSource::Security, MessageLevel::Error, errorMessage); |
271 | RELEASE_LOG_IF_ALLOWED("willSendRequestinternal: resource load canceled because crosss-origin redirection denied by CORS policy (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
272 | cancel(ResourceError(String(), 0, request().url(), errorMessage, ResourceError::Type::AccessControl)); |
273 | return completionHandler(WTFMove(newRequest)); |
274 | } |
275 | |
276 | if (m_resource->isImage() && m_documentLoader->cachedResourceLoader().shouldDeferImageLoad(newRequest.url())) { |
277 | RELEASE_LOG_IF_ALLOWED("willSendRequestinternal: resource load canceled because it's an image that should be defered (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
278 | cancel(); |
279 | return completionHandler(WTFMove(newRequest)); |
280 | } |
281 | m_loadTiming.addRedirect(redirectResponse.url(), newRequest.url()); |
282 | m_resource->redirectReceived(WTFMove(newRequest), redirectResponse, [completionHandler = WTFMove(completionHandler), continueWillSendRequest = WTFMove(continueWillSendRequest)] (ResourceRequest&& request) mutable { |
283 | continueWillSendRequest(WTFMove(completionHandler), WTFMove(request)); |
284 | }); |
285 | return; |
286 | } |
287 | |
288 | continueWillSendRequest(WTFMove(completionHandler), WTFMove(newRequest)); |
289 | } |
290 | |
291 | void SubresourceLoader::didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent) |
292 | { |
293 | ASSERT(m_state == Initialized); |
294 | Ref<SubresourceLoader> protectedThis(*this); |
295 | m_resource->didSendData(bytesSent, totalBytesToBeSent); |
296 | } |
297 | |
298 | #if USE(QUICK_LOOK) |
299 | |
300 | bool SubresourceLoader::shouldCreatePreviewLoaderForResponse(const ResourceResponse& response) const |
301 | { |
302 | if (m_resource->type() != CachedResource::Type::MainResource) |
303 | return false; |
304 | |
305 | if (m_previewLoader) |
306 | return false; |
307 | |
308 | return PreviewConverter::supportsMIMEType(response.mimeType()); |
309 | } |
310 | |
311 | #endif |
312 | |
313 | void SubresourceLoader::didReceiveResponse(const ResourceResponse& response, CompletionHandler<void()>&& policyCompletionHandler) |
314 | { |
315 | ASSERT(!response.isNull()); |
316 | ASSERT(m_state == Initialized); |
317 | |
318 | CompletionHandlerCallingScope completionHandlerCaller(WTFMove(policyCompletionHandler)); |
319 | |
320 | #if USE(QUICK_LOOK) |
321 | if (shouldCreatePreviewLoaderForResponse(response)) { |
322 | m_previewLoader = PreviewLoader::create(*this, response); |
323 | if (m_previewLoader->didReceiveResponse(response)) |
324 | return; |
325 | } |
326 | #endif |
327 | #if ENABLE(SERVICE_WORKER) |
328 | // Implementing step 10 of https://fetch.spec.whatwg.org/#main-fetch for service worker responses. |
329 | if (response.source() == ResourceResponse::Source::ServiceWorker && response.url() != request().url()) { |
330 | auto& loader = m_documentLoader->cachedResourceLoader(); |
331 | if (!loader.allowedByContentSecurityPolicy(m_resource->type(), response.url(), options(), ContentSecurityPolicy::RedirectResponseReceived::Yes)) { |
332 | RELEASE_LOG_IF_ALLOWED("didReceiveResponse: canceling load because not allowed by content policy (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
333 | cancel(ResourceError({ }, 0, response.url(), { }, ResourceError::Type::General)); |
334 | return; |
335 | } |
336 | } |
337 | #endif |
338 | |
339 | // We want redirect responses to be processed through willSendRequestInternal. Exceptions are |
340 | // redirection with no Location headers and fetch in manual redirect mode. Or in rare circumstances, |
341 | // cases of too many redirects from CFNetwork (<rdar://problem/30610988>). |
342 | #if !PLATFORM(COCOA) |
343 | ASSERT(response.httpStatusCode() < 300 || response.httpStatusCode() >= 400 || response.httpStatusCode() == 304 || !response.httpHeaderField(HTTPHeaderName::Location) || response.type() == ResourceResponse::Type::Opaqueredirect); |
344 | #endif |
345 | |
346 | // Reference the object in this method since the additional processing can do |
347 | // anything including removing the last reference to this object; one example of this is 3266216. |
348 | Ref<SubresourceLoader> protectedThis(*this); |
349 | |
350 | if (shouldIncludeCertificateInfo()) |
351 | response.includeCertificateInfo(); |
352 | |
353 | if (m_resource->resourceToRevalidate()) { |
354 | if (response.httpStatusCode() == 304) { |
355 | // 304 Not modified / Use local copy |
356 | // Existing resource is ok, just use it updating the expiration time. |
357 | ResourceResponse revalidationResponse = response; |
358 | revalidationResponse.setSource(ResourceResponse::Source::MemoryCacheAfterValidation); |
359 | m_resource->setResponse(revalidationResponse); |
360 | MemoryCache::singleton().revalidationSucceeded(*m_resource, revalidationResponse); |
361 | if (m_frame && m_frame->page()) |
362 | m_frame->page()->diagnosticLoggingClient().logDiagnosticMessageWithResult(DiagnosticLoggingKeys::cachedResourceRevalidationKey(), emptyString(), DiagnosticLoggingResultPass, ShouldSample::Yes); |
363 | if (!reachedTerminalState()) |
364 | ResourceLoader::didReceiveResponse(revalidationResponse, [completionHandlerCaller = WTFMove(completionHandlerCaller)] { }); |
365 | return; |
366 | } |
367 | // Did not get 304 response, continue as a regular resource load. |
368 | MemoryCache::singleton().revalidationFailed(*m_resource); |
369 | if (m_frame && m_frame->page()) |
370 | m_frame->page()->diagnosticLoggingClient().logDiagnosticMessageWithResult(DiagnosticLoggingKeys::cachedResourceRevalidationKey(), emptyString(), DiagnosticLoggingResultFail, ShouldSample::Yes); |
371 | } |
372 | |
373 | String errorDescription; |
374 | if (!checkResponseCrossOriginAccessControl(response, errorDescription)) { |
375 | if (m_frame && m_frame->document()) |
376 | m_frame->document()->addConsoleMessage(MessageSource::Security, MessageLevel::Error, errorDescription); |
377 | RELEASE_LOG_IF_ALLOWED("didReceiveResponse: canceling load because of cross origin access control (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
378 | cancel(ResourceError(String(), 0, request().url(), errorDescription, ResourceError::Type::AccessControl)); |
379 | return; |
380 | } |
381 | |
382 | m_resource->responseReceived(response); |
383 | if (reachedTerminalState()) |
384 | return; |
385 | |
386 | bool isResponseMultipart = response.isMultipart(); |
387 | if (options().mode != FetchOptions::Mode::Navigate) |
388 | LinkLoader::loadLinksFromHeader(response.httpHeaderField(HTTPHeaderName::Link), m_documentLoader->url(), *m_frame->document(), LinkLoader::MediaAttributeCheck::SkipMediaAttributeCheck); |
389 | ResourceLoader::didReceiveResponse(response, [this, protectedThis = WTFMove(protectedThis), isResponseMultipart, completionHandlerCaller = WTFMove(completionHandlerCaller)]() mutable { |
390 | if (reachedTerminalState()) |
391 | return; |
392 | |
393 | // FIXME: Main resources have a different set of rules for multipart than images do. |
394 | // Hopefully we can merge those 2 paths. |
395 | if (isResponseMultipart && m_resource->type() != CachedResource::Type::MainResource) { |
396 | m_loadingMultipartContent = true; |
397 | |
398 | // We don't count multiParts in a CachedResourceLoader's request count |
399 | m_requestCountTracker = WTF::nullopt; |
400 | if (!m_resource->isImage()) { |
401 | RELEASE_LOG_IF_ALLOWED("didReceiveResponse: canceling load because something about a multi-part non-image (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
402 | cancel(); |
403 | return; |
404 | } |
405 | } |
406 | |
407 | auto* buffer = resourceData(); |
408 | if (m_loadingMultipartContent && buffer && buffer->size()) { |
409 | // The resource data will change as the next part is loaded, so we need to make a copy. |
410 | m_resource->finishLoading(buffer->copy().ptr()); |
411 | clearResourceData(); |
412 | // Since a subresource loader does not load multipart sections progressively, data was delivered to the loader all at once. |
413 | // After the first multipart section is complete, signal to delegates that this load is "finished" |
414 | NetworkLoadMetrics emptyMetrics; |
415 | m_documentLoader->subresourceLoaderFinishedLoadingOnePart(this); |
416 | didFinishLoadingOnePart(emptyMetrics); |
417 | } |
418 | |
419 | checkForHTTPStatusCodeError(); |
420 | |
421 | if (m_inAsyncResponsePolicyCheck) |
422 | m_policyForResponseCompletionHandler = completionHandlerCaller.release(); |
423 | }); |
424 | } |
425 | |
426 | void SubresourceLoader::didReceiveResponsePolicy() |
427 | { |
428 | ASSERT(m_inAsyncResponsePolicyCheck); |
429 | m_inAsyncResponsePolicyCheck = false; |
430 | if (auto completionHandler = WTFMove(m_policyForResponseCompletionHandler)) |
431 | completionHandler(); |
432 | } |
433 | |
434 | void SubresourceLoader::didReceiveData(const char* data, unsigned length, long long encodedDataLength, DataPayloadType dataPayloadType) |
435 | { |
436 | #if USE(QUICK_LOOK) |
437 | if (auto previewLoader = m_previewLoader.get()) { |
438 | if (previewLoader->didReceiveData(data, length)) |
439 | return; |
440 | } |
441 | #endif |
442 | |
443 | didReceiveDataOrBuffer(data, length, nullptr, encodedDataLength, dataPayloadType); |
444 | } |
445 | |
446 | void SubresourceLoader::didReceiveBuffer(Ref<SharedBuffer>&& buffer, long long encodedDataLength, DataPayloadType dataPayloadType) |
447 | { |
448 | #if USE(QUICK_LOOK) |
449 | if (auto previewLoader = m_previewLoader.get()) { |
450 | if (previewLoader->didReceiveBuffer(buffer.get())) |
451 | return; |
452 | } |
453 | #endif |
454 | |
455 | didReceiveDataOrBuffer(nullptr, 0, WTFMove(buffer), encodedDataLength, dataPayloadType); |
456 | } |
457 | |
458 | void SubresourceLoader::didReceiveDataOrBuffer(const char* data, int length, RefPtr<SharedBuffer>&& buffer, long long encodedDataLength, DataPayloadType dataPayloadType) |
459 | { |
460 | ASSERT(m_resource); |
461 | |
462 | if (m_resource->response().httpStatusCode() >= 400 && !m_resource->shouldIgnoreHTTPStatusCodeErrors()) |
463 | return; |
464 | ASSERT(!m_resource->resourceToRevalidate()); |
465 | ASSERT(!m_resource->errorOccurred()); |
466 | ASSERT(m_state == Initialized); |
467 | // Reference the object in this method since the additional processing can do |
468 | // anything including removing the last reference to this object; one example of this is 3266216. |
469 | Ref<SubresourceLoader> protectedThis(*this); |
470 | |
471 | ResourceLoader::didReceiveDataOrBuffer(data, length, buffer.copyRef(), encodedDataLength, dataPayloadType); |
472 | |
473 | if (!m_loadingMultipartContent) { |
474 | if (auto* resourceData = this->resourceData()) |
475 | m_resource->updateBuffer(*resourceData); |
476 | else |
477 | m_resource->updateData(buffer ? buffer->data() : data, buffer ? buffer->size() : length); |
478 | } |
479 | } |
480 | |
481 | bool SubresourceLoader::checkForHTTPStatusCodeError() |
482 | { |
483 | if (m_resource->response().httpStatusCode() < 400 || m_resource->shouldIgnoreHTTPStatusCodeErrors()) |
484 | return false; |
485 | |
486 | m_state = Finishing; |
487 | m_resource->error(CachedResource::LoadError); |
488 | cancel(); |
489 | return true; |
490 | } |
491 | |
492 | static void logResourceLoaded(Frame* frame, CachedResource::Type type) |
493 | { |
494 | if (!frame || !frame->page()) |
495 | return; |
496 | |
497 | String resourceType; |
498 | switch (type) { |
499 | case CachedResource::Type::MainResource: |
500 | resourceType = DiagnosticLoggingKeys::mainResourceKey(); |
501 | break; |
502 | case CachedResource::Type::ImageResource: |
503 | resourceType = DiagnosticLoggingKeys::imageKey(); |
504 | break; |
505 | #if ENABLE(XSLT) |
506 | case CachedResource::Type::XSLStyleSheet: |
507 | #endif |
508 | case CachedResource::Type::CSSStyleSheet: |
509 | resourceType = DiagnosticLoggingKeys::styleSheetKey(); |
510 | break; |
511 | case CachedResource::Type::Script: |
512 | resourceType = DiagnosticLoggingKeys::scriptKey(); |
513 | break; |
514 | case CachedResource::Type::FontResource: |
515 | #if ENABLE(SVG_FONTS) |
516 | case CachedResource::Type::SVGFontResource: |
517 | #endif |
518 | resourceType = DiagnosticLoggingKeys::fontKey(); |
519 | break; |
520 | case CachedResource::Type::Beacon: |
521 | case CachedResource::Type::Ping: |
522 | case CachedResource::Type::MediaResource: |
523 | case CachedResource::Type::Icon: |
524 | case CachedResource::Type::RawResource: |
525 | resourceType = DiagnosticLoggingKeys::rawKey(); |
526 | break; |
527 | case CachedResource::Type::SVGDocumentResource: |
528 | resourceType = DiagnosticLoggingKeys::svgDocumentKey(); |
529 | break; |
530 | #if ENABLE(APPLICATION_MANIFEST) |
531 | case CachedResource::Type::ApplicationManifest: |
532 | resourceType = DiagnosticLoggingKeys::applicationManifestKey(); |
533 | break; |
534 | #endif |
535 | case CachedResource::Type::LinkPrefetch: |
536 | #if ENABLE(VIDEO_TRACK) |
537 | case CachedResource::Type::TextTrackResource: |
538 | #endif |
539 | resourceType = DiagnosticLoggingKeys::otherKey(); |
540 | break; |
541 | } |
542 | |
543 | frame->page()->diagnosticLoggingClient().logDiagnosticMessage(DiagnosticLoggingKeys::resourceLoadedKey(), resourceType, ShouldSample::Yes); |
544 | } |
545 | |
546 | bool SubresourceLoader::checkResponseCrossOriginAccessControl(const ResourceResponse& response, String& errorDescription) |
547 | { |
548 | if (!m_resource->isCrossOrigin() || options().mode != FetchOptions::Mode::Cors) |
549 | return true; |
550 | |
551 | #if ENABLE(SERVICE_WORKER) |
552 | if (response.source() == ResourceResponse::Source::ServiceWorker) |
553 | return response.tainting() != ResourceResponse::Tainting::Opaque; |
554 | #endif |
555 | |
556 | ASSERT(m_origin); |
557 | |
558 | return passesAccessControlCheck(response, options().credentials == FetchOptions::Credentials::Include ? StoredCredentialsPolicy::Use : StoredCredentialsPolicy::DoNotUse, *m_origin, errorDescription); |
559 | } |
560 | |
561 | bool SubresourceLoader::checkRedirectionCrossOriginAccessControl(const ResourceRequest& previousRequest, const ResourceResponse& redirectResponse, ResourceRequest& newRequest, String& errorMessage) |
562 | { |
563 | bool crossOriginFlag = m_resource->isCrossOrigin(); |
564 | bool isNextRequestCrossOrigin = m_origin && !m_origin->canRequest(newRequest.url()); |
565 | |
566 | if (isNextRequestCrossOrigin) |
567 | m_resource->setCrossOrigin(); |
568 | |
569 | ASSERT(options().mode != FetchOptions::Mode::SameOrigin || !m_resource->isCrossOrigin()); |
570 | |
571 | // Implementing https://fetch.spec.whatwg.org/#concept-http-redirect-fetch step 7 & 8. |
572 | if (options().mode == FetchOptions::Mode::Cors) { |
573 | if (m_resource->isCrossOrigin() && !isValidCrossOriginRedirectionURL(newRequest.url())) { |
574 | errorMessage = "URL is either a non-HTTP URL or contains credentials."_s ; |
575 | return false; |
576 | } |
577 | |
578 | ASSERT(m_origin); |
579 | if (crossOriginFlag && !passesAccessControlCheck(redirectResponse, options().storedCredentialsPolicy, *m_origin, errorMessage)) |
580 | return false; |
581 | } |
582 | |
583 | bool redirectingToNewOrigin = false; |
584 | if (m_resource->isCrossOrigin()) { |
585 | if (!crossOriginFlag && isNextRequestCrossOrigin) |
586 | redirectingToNewOrigin = true; |
587 | else |
588 | redirectingToNewOrigin = !protocolHostAndPortAreEqual(previousRequest.url(), newRequest.url()); |
589 | } |
590 | |
591 | // Implementing https://fetch.spec.whatwg.org/#concept-http-redirect-fetch step 10. |
592 | if (crossOriginFlag && redirectingToNewOrigin) |
593 | m_origin = SecurityOrigin::createUnique(); |
594 | |
595 | // Implementing https://fetch.spec.whatwg.org/#concept-http-redirect-fetch step 14. |
596 | updateReferrerPolicy(redirectResponse.httpHeaderField(HTTPHeaderName::ReferrerPolicy)); |
597 | |
598 | if (options().mode == FetchOptions::Mode::Cors && redirectingToNewOrigin) { |
599 | cleanHTTPRequestHeadersForAccessControl(newRequest, options().httpHeadersToKeep); |
600 | updateRequestForAccessControl(newRequest, *m_origin, options().storedCredentialsPolicy); |
601 | } |
602 | |
603 | updateRequestReferrer(newRequest, referrerPolicy(), previousRequest.httpReferrer()); |
604 | |
605 | return true; |
606 | } |
607 | |
608 | void SubresourceLoader::updateReferrerPolicy(const String& referrerPolicyValue) |
609 | { |
610 | if (auto referrerPolicy = parseReferrerPolicy(referrerPolicyValue, ReferrerPolicySource::HTTPHeader)) { |
611 | ASSERT(*referrerPolicy != ReferrerPolicy::EmptyString); |
612 | setReferrerPolicy(*referrerPolicy); |
613 | } |
614 | } |
615 | |
616 | void SubresourceLoader::didFinishLoading(const NetworkLoadMetrics& networkLoadMetrics) |
617 | { |
618 | RELEASE_LOG_IF_ALLOWED("didFinishLoading: (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
619 | |
620 | #if USE(QUICK_LOOK) |
621 | if (auto previewLoader = m_previewLoader.get()) { |
622 | if (previewLoader->didFinishLoading()) |
623 | return; |
624 | } |
625 | #endif |
626 | |
627 | if (m_state != Initialized) |
628 | return; |
629 | ASSERT(!reachedTerminalState()); |
630 | ASSERT(!m_resource->resourceToRevalidate()); |
631 | // FIXME (129394): We should cancel the load when a decode error occurs instead of continuing the load to completion. |
632 | ASSERT(!m_resource->errorOccurred() || m_resource->status() == CachedResource::DecodeError || !m_resource->isLoading()); |
633 | LOG(ResourceLoading, "Received '%s'." , m_resource->url().string().latin1().data()); |
634 | logResourceLoaded(m_frame.get(), m_resource->type()); |
635 | |
636 | Ref<SubresourceLoader> protectedThis(*this); |
637 | CachedResourceHandle<CachedResource> protectResource(m_resource); |
638 | |
639 | // FIXME: Remove this with deprecatedNetworkLoadMetrics. |
640 | m_loadTiming.setResponseEnd(MonotonicTime::now()); |
641 | |
642 | if (networkLoadMetrics.isComplete()) |
643 | reportResourceTiming(networkLoadMetrics); |
644 | else { |
645 | // This is the legacy path for platforms (and ResourceHandle paths) that do not provide |
646 | // complete load metrics in didFinishLoad. In those cases, fall back to the possibility |
647 | // that they populated partial load timing information on the ResourceResponse. |
648 | reportResourceTiming(m_resource->response().deprecatedNetworkLoadMetrics()); |
649 | } |
650 | |
651 | if (m_resource->type() != CachedResource::Type::MainResource) |
652 | tracePoint(SubresourceLoadDidEnd); |
653 | |
654 | m_state = Finishing; |
655 | m_resource->finishLoading(resourceData()); |
656 | |
657 | if (wasCancelled()) { |
658 | RELEASE_LOG_IF_ALLOWED("didFinishLoading: was canceled (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
659 | return; |
660 | } |
661 | |
662 | m_resource->finish(); |
663 | ASSERT(!reachedTerminalState()); |
664 | didFinishLoadingOnePart(networkLoadMetrics); |
665 | notifyDone(LoadCompletionType::Finish); |
666 | |
667 | if (reachedTerminalState()) { |
668 | RELEASE_LOG_IF_ALLOWED("didFinishLoading: reached terminal state (frame = %p, frameLoader = %p, resourceID = %lu)" , frame(), frameLoader(), identifier()); |
669 | return; |
670 | } |
671 | releaseResources(); |
672 | } |
673 | |
674 | void SubresourceLoader::didFail(const ResourceError& error) |
675 | { |
676 | RELEASE_LOG_IF_ALLOWED("didFail: (frame = %p, frameLoader = %p, resourceID = %lu, type = %d, code = %d)" , frame(), frameLoader(), identifier(), static_cast<int>(error.type()), error.errorCode()); |
677 | |
678 | #if USE(QUICK_LOOK) |
679 | if (auto previewLoader = m_previewLoader.get()) |
680 | previewLoader->didFail(); |
681 | #endif |
682 | |
683 | if (m_state != Initialized) |
684 | return; |
685 | |
686 | ASSERT(!reachedTerminalState()); |
687 | LOG(ResourceLoading, "Failed to load '%s'.\n" , m_resource->url().string().latin1().data()); |
688 | |
689 | if (m_frame->document() && error.isAccessControl() && m_resource->type() != CachedResource::Type::Ping) |
690 | m_frame->document()->addConsoleMessage(MessageSource::Security, MessageLevel::Error, error.localizedDescription()); |
691 | |
692 | Ref<SubresourceLoader> protectedThis(*this); |
693 | CachedResourceHandle<CachedResource> protectResource(m_resource); |
694 | m_state = Finishing; |
695 | |
696 | if (m_resource->type() != CachedResource::Type::MainResource) |
697 | tracePoint(SubresourceLoadDidEnd); |
698 | |
699 | if (m_resource->resourceToRevalidate()) |
700 | MemoryCache::singleton().revalidationFailed(*m_resource); |
701 | m_resource->setResourceError(error); |
702 | if (!m_resource->isPreloaded()) |
703 | MemoryCache::singleton().remove(*m_resource); |
704 | m_resource->error(CachedResource::LoadError); |
705 | cleanupForError(error); |
706 | notifyDone(LoadCompletionType::Cancel); |
707 | if (reachedTerminalState()) |
708 | return; |
709 | releaseResources(); |
710 | } |
711 | |
712 | void SubresourceLoader::willCancel(const ResourceError& error) |
713 | { |
714 | RELEASE_LOG_IF_ALLOWED("willCancel: (frame = %p, frameLoader = %p, resourceID = %lu, type = %d, code = %d)" , frame(), frameLoader(), identifier(), static_cast<int>(error.type()), error.errorCode()); |
715 | |
716 | #if PLATFORM(IOS_FAMILY) |
717 | // Since we defer initialization to scheduling time on iOS but |
718 | // CachedResourceLoader stores resources in the memory cache immediately, |
719 | // m_resource might be cached despite its loader not being initialized. |
720 | if (m_state != Initialized && m_state != Uninitialized) |
721 | #else |
722 | if (m_state != Initialized) |
723 | #endif |
724 | return; |
725 | |
726 | ASSERT(!reachedTerminalState()); |
727 | LOG(ResourceLoading, "Cancelled load of '%s'.\n" , m_resource->url().string().latin1().data()); |
728 | |
729 | Ref<SubresourceLoader> protectedThis(*this); |
730 | #if PLATFORM(IOS_FAMILY) |
731 | m_state = m_state == Uninitialized ? CancelledWhileInitializing : Finishing; |
732 | #else |
733 | m_state = Finishing; |
734 | #endif |
735 | auto& memoryCache = MemoryCache::singleton(); |
736 | if (m_resource->resourceToRevalidate()) |
737 | memoryCache.revalidationFailed(*m_resource); |
738 | m_resource->setResourceError(error); |
739 | memoryCache.remove(*m_resource); |
740 | } |
741 | |
742 | void SubresourceLoader::didCancel(const ResourceError&) |
743 | { |
744 | if (m_state == Uninitialized) |
745 | return; |
746 | |
747 | if (m_resource->type() != CachedResource::Type::MainResource) |
748 | tracePoint(SubresourceLoadDidEnd); |
749 | |
750 | m_resource->cancelLoad(); |
751 | notifyDone(LoadCompletionType::Cancel); |
752 | } |
753 | |
754 | void SubresourceLoader::notifyDone(LoadCompletionType type) |
755 | { |
756 | if (reachedTerminalState()) |
757 | return; |
758 | |
759 | m_requestCountTracker = WTF::nullopt; |
760 | bool shouldPerformPostLoadActions = true; |
761 | #if PLATFORM(IOS_FAMILY) |
762 | if (m_state == CancelledWhileInitializing) |
763 | shouldPerformPostLoadActions = false; |
764 | #endif |
765 | m_documentLoader->cachedResourceLoader().loadDone(type, shouldPerformPostLoadActions); |
766 | if (reachedTerminalState()) |
767 | return; |
768 | m_documentLoader->removeSubresourceLoader(type, this); |
769 | } |
770 | |
771 | void SubresourceLoader::releaseResources() |
772 | { |
773 | ASSERT(!reachedTerminalState()); |
774 | #if PLATFORM(IOS_FAMILY) |
775 | if (m_state != Uninitialized && m_state != CancelledWhileInitializing) |
776 | #else |
777 | if (m_state != Uninitialized) |
778 | #endif |
779 | m_resource->clearLoader(); |
780 | m_resource = nullptr; |
781 | ResourceLoader::releaseResources(); |
782 | } |
783 | |
784 | void SubresourceLoader::reportResourceTiming(const NetworkLoadMetrics& networkLoadMetrics) |
785 | { |
786 | if (!RuntimeEnabledFeatures::sharedFeatures().resourceTimingEnabled()) |
787 | return; |
788 | |
789 | if (!ResourceTimingInformation::shouldAddResourceTiming(*m_resource)) |
790 | return; |
791 | |
792 | Document* document = m_documentLoader->cachedResourceLoader().document(); |
793 | if (!document) |
794 | return; |
795 | |
796 | SecurityOrigin& origin = m_origin ? *m_origin : document->securityOrigin(); |
797 | auto resourceTiming = ResourceTiming::fromLoad(*m_resource, m_resource->initiatorName(), m_loadTiming, networkLoadMetrics, origin); |
798 | |
799 | // Worker resources loaded here are all CachedRawResources loaded through WorkerThreadableLoader. |
800 | // Pass the ResourceTiming information on so that WorkerThreadableLoader may add them to the |
801 | // Worker's Performance object. |
802 | if (options().initiatorContext == InitiatorContext::Worker) { |
803 | ASSERT(m_origin); |
804 | ASSERT(is<CachedRawResource>(m_resource)); |
805 | downcast<CachedRawResource>(*m_resource).finishedTimingForWorkerLoad(WTFMove(resourceTiming)); |
806 | return; |
807 | } |
808 | |
809 | ASSERT(options().initiatorContext == InitiatorContext::Document); |
810 | m_documentLoader->cachedResourceLoader().resourceTimingInformation().addResourceTiming(*m_resource, *document, WTFMove(resourceTiming)); |
811 | } |
812 | |
813 | const HTTPHeaderMap* SubresourceLoader::() const |
814 | { |
815 | return (m_resource && m_resource->originalRequest()) ? &m_resource->originalRequest()->httpHeaderFields() : nullptr; |
816 | } |
817 | |
818 | } |
819 | |
820 | #undef RELEASE_LOG_IF_ALLOWED |
821 | #undef RELEASE_LOG_ERROR_IF_ALLOWED |
822 | |