WorkletGlobalScope.cpp   [plain text]

/*
 * Copyright (C) 2018-2020 Apple Inc. All Rights Reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    notice, this list of conditions and the following disclaimer in the
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 *
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 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#include "config.h"
#include "WorkletGlobalScope.h"

#if ENABLE(CSS_PAINTING_API)

#include "Frame.h"
#include "InspectorInstrumentation.h"
#include "JSWorkletGlobalScope.h"
#include "PageConsoleClient.h"
#include "SecurityOriginPolicy.h"
#include "Settings.h"
#include "WorkerEventLoop.h"
#include "WorkletScriptController.h"
#include <JavaScriptCore/Exception.h>
#include <JavaScriptCore/JSLock.h>
#include <JavaScriptCore/ScriptCallStack.h>
#include <wtf/IsoMallocInlines.h>

namespace WebCore {
using namespace Inspector;

WTF_MAKE_ISO_ALLOCATED_IMPL(WorkletGlobalScope);

WorkletGlobalScope::WorkletGlobalScope(Document& document, Ref<JSC::VM>&& vm, ScriptSourceCode&& code)
    : m_document(makeWeakPtr(document))
    , m_script(makeUnique<WorkletScriptController>(WTFMove(vm), this))
    , m_topOrigin(SecurityOrigin::createUnique())
    , m_code(WTFMove(code))
{
    auto addResult = allWorkletGlobalScopesSet().add(this);
    ASSERT_UNUSED(addResult, addResult);

    auto* frame = document.frame();
    m_jsRuntimeFlags = frame ? frame->settings().javaScriptRuntimeFlags() : JSC::RuntimeFlags();
    ASSERT(document.page());

    setSecurityOriginPolicy(SecurityOriginPolicy::create(m_topOrigin.copyRef()));
    setContentSecurityPolicy(makeUnique<ContentSecurityPolicy>(URL { m_code.url() }, *this));
}

WorkletGlobalScope::~WorkletGlobalScope()
{
    ASSERT(!m_script);
    removeFromContextsMap();
    auto removeResult = allWorkletGlobalScopesSet().remove(this);
    ASSERT_UNUSED(removeResult, removeResult);
}

void WorkletGlobalScope::prepareForDestruction()
{
    if (!m_script)
        return;
    if (m_defaultTaskGroup)
        m_defaultTaskGroup->stopAndDiscardAllTasks();
    stopActiveDOMObjects();
    removeAllEventListeners();
    if (m_eventLoop)
        m_eventLoop->clearMicrotaskQueue();
    removeRejectedPromiseTracker();
    m_script->vm().notifyNeedTermination();
    m_script = nullptr;
}

auto WorkletGlobalScope::allWorkletGlobalScopesSet() -> WorkletGlobalScopesSet&
{
    static NeverDestroyed<WorkletGlobalScopesSet> scopes;
    return scopes;
}

EventLoopTaskGroup& WorkletGlobalScope::eventLoop()
{
    if (UNLIKELY(!m_defaultTaskGroup)) {
        m_eventLoop = WorkerEventLoop::create(*this);
        m_defaultTaskGroup = makeUnique<EventLoopTaskGroup>(*m_eventLoop);
        if (activeDOMObjectsAreStopped())
            m_defaultTaskGroup->stopAndDiscardAllTasks();
    }
    return *m_defaultTaskGroup;
}

String WorkletGlobalScope::userAgent(const URL& url) const
{
    if (!m_document)
        return "";
    return m_document->userAgent(url);
}

void WorkletGlobalScope::evaluate()
{
    m_script->evaluate(m_code);
}

bool WorkletGlobalScope::isJSExecutionForbidden() const
{
    return !m_script || m_script->isExecutionForbidden();
}

void WorkletGlobalScope::disableEval(const String& errorMessage)
{
    m_script->disableEval(errorMessage);
}

void WorkletGlobalScope::disableWebAssembly(const String& errorMessage)
{
    m_script->disableWebAssembly(errorMessage);
}

URL WorkletGlobalScope::completeURL(const String& url, ForceUTF8) const
{
    if (url.isNull())
        return URL();
    return URL(m_code.url(), url);
}

void WorkletGlobalScope::logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, int columnNumber, RefPtr<ScriptCallStack>&& stack)
{
    if (!m_document || isJSExecutionForbidden())
        return;
    m_document->logExceptionToConsole(errorMessage, sourceURL, lineNumber, columnNumber, WTFMove(stack));
}

void WorkletGlobalScope::addConsoleMessage(std::unique_ptr<Inspector::ConsoleMessage>&& message)
{
    if (!m_document || isJSExecutionForbidden() || !message)
        return;
    m_document->addConsoleMessage(makeUnique<Inspector::ConsoleMessage>(message->source(), message->type(), message->level(), message->message(), 0));
}

void WorkletGlobalScope::addConsoleMessage(MessageSource source, MessageLevel level, const String& message, unsigned long requestIdentifier)
{
    if (!m_document || isJSExecutionForbidden())
        return;
    m_document->addConsoleMessage(source, level, message, requestIdentifier);
}

void WorkletGlobalScope::addMessage(MessageSource source, MessageLevel level, const String& messageText, const String& sourceURL, unsigned lineNumber, unsigned columnNumber, RefPtr<ScriptCallStack>&& callStack, JSC::JSGlobalObject*, unsigned long requestIdentifier)
{
    if (!m_document || isJSExecutionForbidden())
        return;
    m_document->addMessage(source, level, messageText, sourceURL, lineNumber, columnNumber, WTFMove(callStack), nullptr, requestIdentifier);
}

ReferrerPolicy WorkletGlobalScope::referrerPolicy() const
{
    return ReferrerPolicy::NoReferrer;
}

} // namespace WebCore
#endif