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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/workers/worker_or_worklet_global_scope.h"
#include "third_party/blink/public/platform/task_type.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_abstract_event_listener.h"
#include "third_party/blink/renderer/bindings/core/v8/worker_or_worklet_script_controller.h"
#include "third_party/blink/renderer/core/dom/events/event_queue.h"
#include "third_party/blink/renderer/core/frame/deprecation.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/core/loader/modulescript/module_script_fetch_request.h"
#include "third_party/blink/renderer/core/loader/worker_fetch_context.h"
#include "third_party/blink/renderer/core/probe/core_probes.h"
#include "third_party/blink/renderer/core/workers/main_thread_worklet_global_scope.h"
#include "third_party/blink/renderer/core/workers/worker_reporting_proxy.h"
#include "third_party/blink/renderer/core/workers/worker_thread.h"
#include "third_party/blink/renderer/platform/cross_thread_functional.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
namespace blink {
WorkerOrWorkletGlobalScope::WorkerOrWorkletGlobalScope(
v8::Isolate* isolate,
WorkerClients* worker_clients,
WorkerReportingProxy& reporting_proxy)
: worker_clients_(worker_clients),
script_controller_(
WorkerOrWorkletScriptController::Create(this, isolate)),
reporting_proxy_(reporting_proxy),
used_features_(static_cast<int>(WebFeature::kNumberOfFeatures)) {
if (worker_clients_)
worker_clients_->ReattachThread();
}
WorkerOrWorkletGlobalScope::~WorkerOrWorkletGlobalScope() = default;
// EventTarget
const AtomicString& WorkerOrWorkletGlobalScope::InterfaceName() const {
NOTREACHED() << "Each global scope that uses events should define its own "
"interface name.";
return g_null_atom;
}
v8::Local<v8::Object> WorkerOrWorkletGlobalScope::Wrap(
v8::Isolate*,
v8::Local<v8::Object> creation_context) {
LOG(FATAL) << "WorkerOrWorkletGlobalScope must never be wrapped with wrap "
"method. The global object of ECMAScript environment is used "
"as the wrapper.";
return v8::Local<v8::Object>();
}
v8::Local<v8::Object> WorkerOrWorkletGlobalScope::AssociateWithWrapper(
v8::Isolate*,
const WrapperTypeInfo*,
v8::Local<v8::Object> wrapper) {
LOG(FATAL) << "WorkerOrWorkletGlobalScope must never be wrapped with wrap "
"method. The global object of ECMAScript environment is used "
"as the wrapper.";
return v8::Local<v8::Object>();
}
bool WorkerOrWorkletGlobalScope::HasPendingActivity() const {
// The global scope wrapper is kept alive as longs as its execution context is
// active.
return !ExecutionContext::IsContextDestroyed();
}
void WorkerOrWorkletGlobalScope::CountFeature(WebFeature feature) {
DCHECK(IsContextThread());
DCHECK_NE(WebFeature::kOBSOLETE_PageDestruction, feature);
DCHECK_GT(WebFeature::kNumberOfFeatures, feature);
if (used_features_.QuickGet(static_cast<int>(feature)))
return;
used_features_.QuickSet(static_cast<int>(feature));
ReportingProxy().CountFeature(feature);
}
void WorkerOrWorkletGlobalScope::CountDeprecation(WebFeature feature) {
DCHECK(IsContextThread());
DCHECK_NE(WebFeature::kOBSOLETE_PageDestruction, feature);
DCHECK_GT(WebFeature::kNumberOfFeatures, feature);
if (used_features_.QuickGet(static_cast<int>(feature)))
return;
used_features_.QuickSet(static_cast<int>(feature));
// Adds a deprecation message to the console.
DCHECK(!Deprecation::DeprecationMessage(feature).IsEmpty());
AddConsoleMessage(
ConsoleMessage::Create(kDeprecationMessageSource, kWarningMessageLevel,
Deprecation::DeprecationMessage(feature)));
ReportingProxy().CountDeprecation(feature);
}
ResourceFetcher* WorkerOrWorkletGlobalScope::EnsureFetcher() {
DCHECK(IsContextThread());
if (resource_fetcher_)
return resource_fetcher_;
WorkerFetchContext* fetch_context = WorkerFetchContext::Create(*this);
resource_fetcher_ = ResourceFetcher::Create(fetch_context);
DCHECK(resource_fetcher_);
return resource_fetcher_;
}
ResourceFetcher* WorkerOrWorkletGlobalScope::Fetcher() const {
DCHECK(IsContextThread());
DCHECK(resource_fetcher_);
return resource_fetcher_;
}
bool WorkerOrWorkletGlobalScope::IsJSExecutionForbidden() const {
return script_controller_->IsExecutionForbidden();
}
void WorkerOrWorkletGlobalScope::DisableEval(const String& error_message) {
script_controller_->DisableEval(error_message);
}
bool WorkerOrWorkletGlobalScope::CanExecuteScripts(
ReasonForCallingCanExecuteScripts) {
return !IsJSExecutionForbidden();
}
void WorkerOrWorkletGlobalScope::Dispose() {
DCHECK(script_controller_);
// Event listeners would keep DOMWrapperWorld objects alive for too long.
// Also, they have references to JS objects, which become dangling once Heap
// is destroyed.
HeapHashSet<Member<V8AbstractEventListener>> listeners;
listeners.swap(event_listeners_);
while (!listeners.IsEmpty()) {
for (const auto& listener : listeners)
listener->ClearListenerObject();
listeners.clear();
// Pick up any additions made while iterating.
listeners.swap(event_listeners_);
}
RemoveAllEventListeners();
script_controller_->Dispose();
script_controller_.Clear();
if (resource_fetcher_) {
resource_fetcher_->StopFetching();
resource_fetcher_->ClearContext();
}
}
void WorkerOrWorkletGlobalScope::RegisterEventListener(
V8AbstractEventListener* event_listener) {
// TODO(sof): remove once crbug.com/677654 has been diagnosed.
CHECK(&ThreadState::FromObject(this)->Heap() ==
&ThreadState::FromObject(event_listener)->Heap());
bool new_entry = event_listeners_.insert(event_listener).is_new_entry;
CHECK(new_entry);
}
void WorkerOrWorkletGlobalScope::DeregisterEventListener(
V8AbstractEventListener* event_listener) {
auto it = event_listeners_.find(event_listener);
CHECK(it != event_listeners_.end() || IsClosing());
event_listeners_.erase(it);
}
void WorkerOrWorkletGlobalScope::SetModulator(Modulator* modulator) {
modulator_ = modulator;
}
scheduler::WorkerScheduler* WorkerOrWorkletGlobalScope::GetScheduler() {
DCHECK(IsContextThread());
return GetThread()->GetScheduler();
}
scoped_refptr<base::SingleThreadTaskRunner>
WorkerOrWorkletGlobalScope::GetTaskRunner(TaskType type) {
DCHECK(IsContextThread());
return GetThread()->GetTaskRunner(type);
}
void WorkerOrWorkletGlobalScope::InitContentSecurityPolicyFromVector(
const Vector<CSPHeaderAndType>& headers) {
if (!GetContentSecurityPolicy()) {
ContentSecurityPolicy* csp = ContentSecurityPolicy::Create();
SetContentSecurityPolicy(csp);
}
for (const auto& policy_and_type : headers) {
GetContentSecurityPolicy()->DidReceiveHeader(
policy_and_type.first, policy_and_type.second,
kContentSecurityPolicyHeaderSourceHTTP);
}
}
void WorkerOrWorkletGlobalScope::BindContentSecurityPolicyToExecutionContext() {
DCHECK(IsContextThread());
GetContentSecurityPolicy()->BindToExecutionContext(GetExecutionContext());
}
// Implementation of the "fetch a module worker script graph" algorithm in the
// HTML spec:
// https://html.spec.whatwg.org/multipage/webappapis.html#fetch-a-module-worker-script-tree
void WorkerOrWorkletGlobalScope::FetchModuleScript(
const KURL& module_url_record,
FetchClientSettingsObjectSnapshot* fetch_client_settings_object,
WebURLRequest::RequestContext destination,
network::mojom::FetchCredentialsMode credentials_mode,
ModuleScriptCustomFetchType custom_fetch_type,
ModuleTreeClient* client) {
// Step 2: "Let options be a script fetch options whose cryptographic nonce is
// the empty string,
String nonce;
// integrity metadata is the empty string,
String integrity_attribute;
// parser metadata is "not-parser-inserted,
ParserDisposition parser_state = kNotParserInserted;
// credentials mode is credentials mode, and referrer policy is the empty
// string."
ScriptFetchOptions options(nonce, IntegrityMetadataSet(), integrity_attribute,
parser_state, credentials_mode,
kReferrerPolicyDefault);
Modulator* modulator = Modulator::From(ScriptController()->GetScriptState());
// Step 3. "Perform the internal module script graph fetching procedure ..."
modulator->FetchTree(module_url_record, fetch_client_settings_object,
destination, options, custom_fetch_type, client);
}
void WorkerOrWorkletGlobalScope::Trace(blink::Visitor* visitor) {
visitor->Trace(resource_fetcher_);
visitor->Trace(script_controller_);
visitor->Trace(event_listeners_);
visitor->Trace(modulator_);
EventTargetWithInlineData::Trace(visitor);
ExecutionContext::Trace(visitor);
SecurityContext::Trace(visitor);
}
} // namespace blink
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