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/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "AdvancedPrivacyProtections.h"
#include "EventLoop.h"
#include "Microtasks.h"
#include "ReferrerPolicy.h"
#include "ScriptExecutionContext.h"
#include "SecurityOrigin.h"
#include <wtf/TZoneMalloc.h>
namespace WebCore {
class EmptyScriptExecutionContext final : public RefCounted<EmptyScriptExecutionContext>, public ScriptExecutionContext {
public:
static Ref<EmptyScriptExecutionContext> create(JSC::VM& vm)
{
return adoptRef(*new EmptyScriptExecutionContext(vm));
}
~EmptyScriptExecutionContext()
{
m_eventLoop->removeAssociatedContext(*this);
}
bool isSecureContext() const final { return false; }
bool isJSExecutionForbidden() const final { return false; }
EventLoopTaskGroup& eventLoop() final
{
ASSERT_NOT_REACHED();
return *m_eventLoopTaskGroup;
}
const URL& url() const final { return m_url; }
const URL& cookieURL() const final { return url(); }
URL completeURL(const String&, ForceUTF8 = ForceUTF8::No) const final { return { }; };
String userAgent(const URL&) const final { return emptyString(); }
ReferrerPolicy referrerPolicy() const final { return ReferrerPolicy::EmptyString; }
void disableEval(const String&) final { };
void disableWebAssembly(const String&) final { };
void setRequiresTrustedTypes(bool) final { };
IDBClient::IDBConnectionProxy* idbConnectionProxy() final { return nullptr; }
SocketProvider* socketProvider() final { return nullptr; }
void addConsoleMessage(std::unique_ptr<Inspector::ConsoleMessage>&&) final { }
void addConsoleMessage(MessageSource, MessageLevel, const String&, unsigned long) final { };
SecurityOrigin& topOrigin() const final { return m_origin.get(); };
OptionSet<AdvancedPrivacyProtections> advancedPrivacyProtections() const final { return { }; }
std::optional<uint64_t> noiseInjectionHashSalt() const { return std::nullopt; }
OptionSet<NoiseInjectionPolicy> noiseInjectionPolicies() const { return { }; }
void postTask(Task&&) final { ASSERT_NOT_REACHED(); }
EventTarget* errorEventTarget() final { return nullptr; };
std::optional<Vector<uint8_t>> wrapCryptoKey(const Vector<uint8_t>&) final { return std::nullopt; }
std::optional<Vector<uint8_t>> serializeAndWrapCryptoKey(CryptoKeyData&&) final { return std::nullopt; }
std::optional<Vector<uint8_t>> unwrapCryptoKey(const Vector<uint8_t>&) final { return std::nullopt; }
JSC::VM& vm() final { return m_vm; }
JSC::VM* vmIfExists() const final { return m_vm.ptr(); }
using RefCounted::ref;
using RefCounted::deref;
private:
EmptyScriptExecutionContext(JSC::VM& vm)
: ScriptExecutionContext(Type::EmptyScriptExecutionContext)
, m_vm(vm)
, m_origin(SecurityOrigin::createOpaque())
, m_eventLoop(EmptyEventLoop::create(vm))
, m_eventLoopTaskGroup(makeUnique<EventLoopTaskGroup>(m_eventLoop))
{
relaxAdoptionRequirement();
m_eventLoop->addAssociatedContext(*this);
}
void addMessage(MessageSource, MessageLevel, const String&, const String&, unsigned, unsigned, RefPtr<Inspector::ScriptCallStack>&&, JSC::JSGlobalObject* = nullptr, unsigned long = 0) final { }
void logExceptionToConsole(const String&, const String&, int, int, RefPtr<Inspector::ScriptCallStack>&&) final { }
const Settings::Values& settingsValues() const final { return m_settingsValues; }
#if ENABLE(NOTIFICATIONS)
NotificationClient* notificationClient() final { return nullptr; }
#endif
class EmptyEventLoop final : public EventLoop {
public:
static Ref<EmptyEventLoop> create(JSC::VM& vm)
{
return adoptRef(*new EmptyEventLoop(vm));
}
MicrotaskQueue& microtaskQueue() final { return m_queue; };
private:
explicit EmptyEventLoop(JSC::VM& vm)
: m_queue(MicrotaskQueue(vm, *this))
{
}
void scheduleToRun() final { ASSERT_NOT_REACHED(); }
bool isContextThread() const final { return true; }
MicrotaskQueue m_queue;
};
Ref<JSC::VM> m_vm;
Ref<SecurityOrigin> m_origin;
URL m_url;
Ref<EmptyEventLoop> m_eventLoop;
std::unique_ptr<EventLoopTaskGroup> m_eventLoopTaskGroup;
Settings::Values m_settingsValues;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::EmptyScriptExecutionContext)
static bool isType(const WebCore::ScriptExecutionContext& context) { return context.isEmptyScriptExecutionContext(); }
SPECIALIZE_TYPE_TRAITS_END()
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