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/Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/DerivedSources/WebCore/unified-sources/UnifiedSource279.cpp
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 | |
| 10 | |
| 11 | |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 16 | |
| 17 | |
| 18 | |
| 19 | |
| 20 | |
| 21 | |
| 22 | |
| 23 | |
| 24 | |
| 25 | |
| 26 | #include "config.h" |
| 27 | #include "DocumentPrefetcher.h" |
| 28 | |
| 29 | #include "CachedRawResource.h" |
| 30 | #include "CachedResourceClient.h" |
| 31 | #include "CachedResourceLoader.h" |
| 32 | #include "CachedResourceRequest.h" |
| 33 | #include "Document.h" |
| 34 | #include "DocumentLoader.h" |
| 35 | #include "Frame.h" |
| 36 | #include "FrameLoader.h" |
| 37 | #include "MemoryCache.h" |
| 38 | #include "ReferrerPolicy.h" |
| 39 | #include "ResourceRequest.h" |
| 40 | #include "SecurityOrigin.h" |
| 41 | #include "SecurityPolicy.h" |
| 42 | |
| 43 | namespace WebCore { |
| 44 | |
| 45 | DocumentPrefetcher::DocumentPrefetcher(FrameLoader& frameLoader) |
| 46 | : m_frameLoader(frameLoader) |
| 47 | { |
| 48 | } |
| 49 | |
| 50 | DocumentPrefetcher::~DocumentPrefetcher() |
| 51 | { |
| 52 | for (auto& [url, data] : m_prefetchedData) { |
| 53 | if (data.resource && data.resource->hasClient(*this)) |
| 54 | data.resource->removeClient(*this); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | static bool isPassingSecurityChecks(const URL& url, Document& document) |
| 59 | { |
| 60 | Ref documentOrigin = document.securityOrigin(); |
| 61 | Ref urlOrigin = SecurityOrigin::create(url); |
| 62 | if (!documentOrigin->isSameOriginAs(urlOrigin)) { |
| 63 | document.addConsoleMessage(MessageSource::Security, MessageLevel::Error, |
| 64 | "Prefetch request denied: not same origin as document"_s); |
| 65 | return false; |
| 66 | } |
| 67 | |
| 68 | if (!SecurityOrigin::isSecure(url)) { |
| 69 | document.addConsoleMessage(MessageSource::Security, MessageLevel::Error, |
| 70 | "Prefetch request denied: URL must be secure (HTTPS)"_s); |
| 71 | return false; |
| 72 | } |
| 73 | |
| 74 | return true; |
| 75 | } |
| 76 | |
| 77 | static ResourceRequest makePrefetchRequest(URL&& url, const Vector<String>& tags, std::optional<ReferrerPolicy> referrerPolicy, const URL& referrerURL, const Document& document) |
| 78 | { |
| 79 | if (!referrerPolicy) |
| 80 | referrerPolicy = document.referrerPolicy(); |
| 81 | |
| 82 | String referrer = SecurityPolicy::generateReferrerHeader(*referrerPolicy, url, referrerURL, OriginAccessPatternsForWebProcess::singleton()); |
| 83 | |
| 84 | ResourceRequest request { WTF::move(url) }; |
| 85 | request.setPriority(ResourceLoadPriority::VeryLow); |
| 86 | |
| 87 | |
| 88 | if (!tags.isEmpty()) { |
| 89 | StringBuilder builder; |
| 90 | for (size_t i = 0; i < tags.size(); ++i) { |
| 91 | if (i > 0) |
| 92 | builder.append(", "_s); |
| 93 | if (tags[i] == nullAtom()) |
| 94 | builder.append("null"_s); |
| 95 | else |
| 96 | builder.append(tags[i]); |
| 97 | } |
| 98 | request.setHTTPHeaderField(HTTPHeaderName::SecSpeculationTags, builder.toString()); |
| 99 | } |
| 100 | request.setHTTPHeaderField(HTTPHeaderName::SecPurpose, "prefetch"_s); |
| 101 | |
| 102 | if (!referrer.isEmpty()) |
| 103 | request.setHTTPReferrer(WTF::move(referrer)); |
| 104 | |
| 105 | return request; |
| 106 | } |
| 107 | |
| 108 | void DocumentPrefetcher::prefetch(const URL& url, const Vector<String>& tags, std::optional<ReferrerPolicy> referrerPolicy, bool lowPriority) |
| 109 | { |
| 110 | WeakRef<FrameLoader> frameLoader = m_frameLoader; |
| 111 | if (!frameLoader.ptr()) |
| 112 | return; |
| 113 | RefPtr<Document> document = frameLoader->frame().document(); |
| 114 | if (!document) |
| 115 | return; |
| 116 | |
| 117 | if (!url.isValid()) |
| 118 | return; |
| 119 | |
| 120 | if (m_prefetchedData.contains(url)) |
| 121 | return; |
| 122 | |
| 123 | if (!isPassingSecurityChecks(url, *document.get())) |
| 124 | return; |
| 125 | |
| 126 | |
| 127 | if (url.hasFragmentIdentifier() && equalIgnoringFragmentIdentifier(url, document->url())) |
| 128 | return; |
| 129 | |
| 130 | ResourceRequest request = makePrefetchRequest(URL { url }, tags, referrerPolicy, frameLoader->outgoingReferrerURL(), *document); |
| 131 | |
| 132 | ResourceLoaderOptions prefetchOptions( |
| 133 | SendCallbackPolicy::SendCallbacks, |
| 134 | ContentSniffingPolicy::DoNotSniffContent, |
| 135 | DataBufferingPolicy::BufferData, |
| 136 | StoredCredentialsPolicy::Use, |
| 137 | ClientCredentialPolicy::MayAskClientForCredentials, |
| 138 | FetchOptions::Credentials::Include, |
| 139 | SecurityCheckPolicy::DoSecurityCheck, |
| 140 | FetchOptions::Mode::Navigate, |
| 141 | CertificateInfoPolicy::IncludeCertificateInfo, |
| 142 | ContentSecurityPolicyImposition::DoPolicyCheck, |
| 143 | DefersLoadingPolicy::AllowDefersLoading, |
| 144 | CachingPolicy::AllowCachingMainResourcePrefetch |
| 145 | ); |
| 146 | prefetchOptions.destination = FetchOptions::Destination::Document; |
| 147 | CachedResourceRequest prefetchRequest(WTF::move(request), prefetchOptions); |
| 148 | if (lowPriority) |
| 149 | prefetchRequest.setPriority(ResourceLoadPriority::Low); |
| 150 | |
| 151 | auto resourceErrorOr = protect(document->cachedResourceLoader())->requestRawResource(WTF::move(prefetchRequest)); |
| 152 | |
| 153 | if (!resourceErrorOr) |
| 154 | return; |
| 155 | auto& prefetchedResource = resourceErrorOr.value(); |
| 156 | m_prefetchedData.set(url, PrefetchedResourceData { CachedResourceHandle { prefetchedResource.get() }, { } }); |
| 157 | prefetchedResource->addClient(*this); |
| 158 | } |
| 159 | |
| 160 | void DocumentPrefetcher::responseReceived(const CachedResource&, const ResourceResponse&, CompletionHandler<void()>&& completionHandler) |
| 161 | { |
| 162 | if (completionHandler) |
| 163 | completionHandler(); |
| 164 | } |
| 165 | |
| 166 | void DocumentPrefetcher::notifyFinished(CachedResource& resource, const NetworkLoadMetrics& metrics, LoadWillContinueInAnotherProcess) |
| 167 | { |
| 168 | URL resourceURL = resource.url(); |
| 169 | auto it = m_prefetchedData.find(resourceURL); |
| 170 | if (it != m_prefetchedData.end()) |
| 171 | it->value.metrics = Box<NetworkLoadMetrics>::create(metrics); |
| 172 | |
| 173 | if (!resource.response().isSuccessful()) { |
| 174 | if (resource.hasClient(*this)) |
| 175 | resource.removeClient(*this); |
| 176 | m_prefetchedData.remove(resourceURL); |
| 177 | MemoryCache::singleton().remove(resource); |
| 178 | } |
| 179 | |
| 180 | |
| 181 | |
| 182 | } |
| 183 | |
| 184 | void DocumentPrefetcher::removePrefetch(const URL& url) |
| 185 | { |
| 186 | auto it = m_prefetchedData.find(url); |
| 187 | if (it == m_prefetchedData.end()) |
| 188 | return; |
| 189 | |
| 190 | if (auto& resource = it->value.resource) { |
| 191 | if (resource->hasClient(*this)) |
| 192 | resource->removeClient(*this); |
| Call argument for 'this' parameter is uncounted and unsafe |
| 193 | MemoryCache::singleton().remove(*resource); |
| 194 | } |
| 195 | m_prefetchedData.remove(it); |
| 196 | } |
| 197 | |
| 198 | bool DocumentPrefetcher::wasPrefetched(const URL& url) const |
| 199 | { |
| 200 | return m_prefetchedData.contains(url); |
| 201 | } |
| 202 | |
| 203 | Box<NetworkLoadMetrics> DocumentPrefetcher::takePrefetchedResourceMetrics(const URL& url) |
| 204 | { |
| 205 | auto it = m_prefetchedData.find(url); |
| 206 | if (it != m_prefetchedData.end() && it->value.metrics) { |
| 207 | auto metrics = WTF::move(it->value.metrics); |
| 208 | if (auto& resource = it->value.resource) { |
| 209 | if (resource->hasClient(*this)) |
| 210 | resource->removeClient(*this); |
| 211 | MemoryCache::singleton().remove(*resource); |
| 212 | } |
| 213 | m_prefetchedData.remove(it); |
| 214 | return metrics; |
| 215 | } |
| 216 | return { }; |
| 217 | } |
| 218 | |
| 219 | void DocumentPrefetcher::clearPrefetchedResourcesExcept(const URL& url) |
| 220 | { |
| 221 | m_prefetchedData.removeIf([&](auto& entry) { |
| 222 | if (entry.key != url) { |
| 223 | if (auto& resourceHandle = entry.value.resource) { |
| 224 | RefPtr resource = resourceHandle.get(); |
| 225 | if (resource->hasClient(*this)) |
| 226 | resource->removeClient(*this); |
| 227 | MemoryCache::singleton().remove(*resource); |
| 228 | } |
| 229 | return true; |
| 230 | } |
| 231 | return false; |
| 232 | }); |
| 233 | } |
| 234 | |
| 235 | |
| 236 | void DocumentPrefetcher::clearPrefetchedResourcesForOrigin(const SecurityOrigin& origin) |
| 237 | { |
| 238 | m_prefetchedData.removeIf([&](auto& entry) { |
| 239 | Ref urlOrigin = SecurityOrigin::create(entry.key); |
| 240 | if (origin.isSameOriginAs(urlOrigin)) { |
| 241 | if (auto& resourceHandle = entry.value.resource) { |
| 242 | RefPtr resource = resourceHandle.get(); |
| 243 | if (resource->hasClient(*this)) |
| 244 | resource->removeClient(*this); |
| 245 | MemoryCache::singleton().remove(*resource); |
| 246 | } |
| 247 | return true; |
| 248 | } |
| 249 | return false; |
| 250 | }); |
| 251 | } |
| 252 | |
| 253 | } |