/* * Copyright (C) 1999 Lars Knoll ([email protected]) * (C) 1999 Antti Koivisto ([email protected]) * (C) 2001 Dirk Mueller ([email protected]) * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights * reserved. * Copyright (C) 2008 Nikolas Zimmermann <[email protected]> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. */ #include "third_party/blink/renderer/core/script/script_loader.h" #include "base/feature_list.h" #include "base/metrics/histogram_functions.h" #include "services/network/public/mojom/fetch_api.mojom-shared.h" #include "third_party/blink/public/common/features.h" #include "third_party/blink/public/mojom/fetch/fetch_api_request.mojom-blink.h" #include "third_party/blink/renderer/bindings/core/v8/sanitize_script_errors.h" #include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h" #include "third_party/blink/renderer/core/dom/document.h" #include "third_party/blink/renderer/core/dom/events/event.h" #include "third_party/blink/renderer/core/dom/scriptable_document_parser.h" #include "third_party/blink/renderer/core/dom/text.h" #include "third_party/blink/renderer/core/frame/attribution_src_loader.h" #include "third_party/blink/renderer/core/frame/csp/content_security_policy.h" #include "third_party/blink/renderer/core/frame/local_dom_window.h" #include "third_party/blink/renderer/core/frame/local_frame.h" #include "third_party/blink/renderer/core/html/html_document.h" #include "third_party/blink/renderer/core/html/parser/html_parser_idioms.h" #include "third_party/blink/renderer/core/html_names.h" #include "third_party/blink/renderer/core/inspector/console_message.h" #include "third_party/blink/renderer/core/loader/document_loader.h" #include "third_party/blink/renderer/core/loader/fetch_priority_attribute.h" #include "third_party/blink/renderer/core/loader/modulescript/module_script_creation_params.h" #include "third_party/blink/renderer/core/loader/modulescript/module_script_fetch_request.h" #include "third_party/blink/renderer/core/loader/render_blocking_resource_manager.h" #include "third_party/blink/renderer/core/loader/subresource_integrity_helper.h" #include "third_party/blink/renderer/core/loader/url_matcher.h" #include "third_party/blink/renderer/core/loader/web_bundle/script_web_bundle.h" #include "third_party/blink/renderer/core/script/classic_pending_script.h" #include "third_party/blink/renderer/core/script/classic_script.h" #include "third_party/blink/renderer/core/script/import_map.h" #include "third_party/blink/renderer/core/script/js_module_script.h" #include "third_party/blink/renderer/core/script/modulator.h" #include "third_party/blink/renderer/core/script/module_pending_script.h" #include "third_party/blink/renderer/core/script/pending_import_map.h" #include "third_party/blink/renderer/core/script/script.h" #include "third_party/blink/renderer/core/script/script_element_base.h" #include "third_party/blink/renderer/core/script/script_runner.h" #include "third_party/blink/renderer/core/script_type_names.h" #include "third_party/blink/renderer/core/speculation_rules/document_speculation_rules.h" #include "third_party/blink/renderer/core/speculation_rules/speculation_rule_set.h" #include "third_party/blink/renderer/core/speculation_rules/speculation_rules_metrics.h" #include "third_party/blink/renderer/core/svg_names.h" #include "third_party/blink/renderer/core/trustedtypes/trusted_types_util.h" #include "third_party/blink/renderer/platform/bindings/parkable_string.h" #include "third_party/blink/renderer/platform/heap/garbage_collected.h" #include "third_party/blink/renderer/platform/instrumentation/use_counter.h" #include "third_party/blink/renderer/platform/loader/fetch/fetch_client_settings_object_snapshot.h" #include "third_party/blink/renderer/platform/loader/fetch/fetch_parameters.h" #include "third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h" #include "third_party/blink/renderer/platform/loader/subresource_integrity.h" #include "third_party/blink/renderer/platform/network/mime/mime_type_registry.h" #include "third_party/blink/renderer/platform/runtime_enabled_features.h" #include "third_party/blink/renderer/platform/scheduler/public/task_attribution_tracker.h" #include "third_party/blink/renderer/platform/weborigin/security_origin.h" #include "third_party/blink/renderer/platform/weborigin/security_policy.h" #include "third_party/blink/renderer/platform/wtf/std_lib_extras.h" #include "third_party/blink/renderer/platform/wtf/text/string_builder.h" #include "third_party/blink/renderer/platform/wtf/text/string_hash.h" #include "third_party/blink/renderer/platform/wtf/text/string_view.h" namespace blink { namespace { scheduler::TaskAttributionInfo* GetRunningTask(ScriptState* script_state) { … } } // namespace ScriptLoader::ScriptLoader(ScriptElementBase* element, const CreateElementFlags flags) : … { … } ScriptLoader::~ScriptLoader() { … } void ScriptLoader::Trace(Visitor* visitor) const { … } // <specdef // href="https://html.spec.whatwg.org/C/#script-processing-model"> // // <spec>When a script element el that is not parser-inserted experiences one of // the events listed in the following list, the user agent must immediately // prepare the script element el:</spec> // // The following three `PrepareScript()` are for non-parser-inserted scripts and // thus // - Should deny ParserBlockingInline scripts. // - Should return nullptr, i.e. there should no PendingScript to be controlled // by parsers. // - TextPosition is not given. // <spec step="A">The script element becomes connected.</spec> void ScriptLoader::DidNotifySubtreeInsertionsToDocument() { … } // <spec step="B">The script element is connected and a node or document // fragment is inserted into the script element, after any script elements // inserted at that time.</spec> void ScriptLoader::ChildrenChanged( const ContainerNode::ChildrenChange& change) { … } // <spec step="C">The script element is connected and has a src attribute set // where previously the element had no such attribute.</spec> void ScriptLoader::HandleSourceAttribute(const String& source_url) { … } void ScriptLoader::HandleAsyncAttribute() { … } void ScriptLoader::Removed() { … } void ScriptLoader::DocumentBaseURLChanged() { … } namespace { // <specdef href="https://html.spec.whatwg.org/C/#prepare-the-script-element"> bool IsValidClassicScriptTypeAndLanguage(const String& type, const String& language) { … } bool IsSameSite(const KURL& url, const Document& element_document) { … } bool IsDocumentReloadedOrFormSubmitted(const Document& element_document) { … } // Common eligibility conditions for the interventions below. bool IsEligibleCommon(const Document& element_document) { … } // [Intervention, ForceInOrderScript, crbug.com/1344772] bool IsEligibleForForceInOrder(const Document& element_document) { … } // [Intervention, DelayAsyncScriptExecution, crbug.com/1340837] bool IsEligibleForDelay(const Resource& resource, const Document& element_document, const ScriptElementBase& element) { … } // [Intervention, LowPriorityScriptLoading, crbug.com/1365763] bool IsEligibleForLowPriorityScriptLoading(const Document& element_document, const ScriptElementBase& element, const KURL& url) { … } // [Intervention, SelectiveInOrderScript, crbug.com/1356396] bool IsEligibleForSelectiveInOrder(const Resource& resource, const Document& element_document) { … } ScriptRunner::DelayReasons DetermineDelayReasonsToWait( ScriptRunner* script_runner, bool is_eligible_for_delay) { … } } // namespace ScriptLoader::ScriptTypeAtPrepare ScriptLoader::GetScriptTypeAtPrepare( const String& type, const String& language) { … } bool ScriptLoader::BlockForNoModule(ScriptTypeAtPrepare script_type, bool nomodule) { … } // Corresponds to // https://html.spec.whatwg.org/C/#module-script-credentials-mode // which is a translation of the CORS settings attribute in the context of // module scripts. This is used in: // - Step 17 of // https://html.spec.whatwg.org/C/#prepare-the-script-element // - Step 6 of obtaining a preloaded module script // https://html.spec.whatwg.org/C/#link-type-modulepreload. network::mojom::CredentialsMode ScriptLoader::ModuleScriptCredentialsMode( CrossOriginAttributeValue cross_origin) { … } // <specdef href="https://html.spec.whatwg.org/C/#prepare-the-script-element"> PendingScript* ScriptLoader::PrepareScript( ParserBlockingInlineOption parser_blocking_inline_option, const TextPosition& script_start_position) { … } ScriptSchedulingType ScriptLoader::GetScriptSchedulingTypePerSpec( Document& element_document, ParserBlockingInlineOption parser_blocking_inline_option) const { … } void ScriptLoader::FetchModuleScriptTree( const KURL& url, ResourceFetcher* fetch_client_settings_object_fetcher, Modulator* modulator, const ScriptFetchOptions& options) { … } PendingScript* ScriptLoader::TakePendingScript( ScriptSchedulingType scheduling_type) { … } void ScriptLoader::NotifyFinished() { … } // <specdef href="https://html.spec.whatwg.org/C/#prepare-the-script-element"> bool ScriptLoader::IsScriptForEventSupported() const { … } String ScriptLoader::GetScriptText() const { … } void ScriptLoader::AddSpeculationRuleSet(SpeculationRuleSet::Source* source) { … } SpeculationRuleSet* ScriptLoader::RemoveSpeculationRuleSet() { … } } // namespace blink
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