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/*
* Copyright (C) 2008 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.
*
*/
#include "config.h"
#include "NavigatorBase.h"
#include "Document.h"
#include "GPU.h"
#include "ScriptTelemetryCategory.h"
#include "ServiceWorkerContainer.h"
#include "StorageManager.h"
#include "WebCoreOpaqueRoot.h"
#include "WebLockManager.h"
#include <mutex>
#include <wtf/Language.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/NumberOfCores.h>
#include <wtf/TZoneMallocInlines.h>
#include <wtf/UniqueRef.h>
#include <wtf/WeakRandom.h>
#include <wtf/text/MakeString.h>
#include <wtf/text/WTFString.h>
#if OS(LINUX)
#include "sys/utsname.h"
#include <wtf/StdLibExtras.h>
#endif
#if PLATFORM(IOS_FAMILY)
#import <pal/system/ios/Device.h>
#endif
#ifndef WEBCORE_NAVIGATOR_PRODUCT
#define WEBCORE_NAVIGATOR_PRODUCT "Gecko"_s
#endif // ifndef WEBCORE_NAVIGATOR_PRODUCT
#ifndef WEBCORE_NAVIGATOR_PRODUCT_SUB
#define WEBCORE_NAVIGATOR_PRODUCT_SUB "20030107"_s
#endif // ifndef WEBCORE_NAVIGATOR_PRODUCT_SUB
#ifndef WEBCORE_NAVIGATOR_VENDOR
#define WEBCORE_NAVIGATOR_VENDOR "Apple Computer, Inc."_s
#endif // ifndef WEBCORE_NAVIGATOR_VENDOR
#ifndef WEBCORE_NAVIGATOR_VENDOR_SUB
#define WEBCORE_NAVIGATOR_VENDOR_SUB emptyString()
#endif // ifndef WEBCORE_NAVIGATOR_VENDOR_SUB
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(NavigatorBase);
NavigatorBase::NavigatorBase(ScriptExecutionContext* context)
: ContextDestructionObserver(context)
{
}
NavigatorBase::~NavigatorBase() = default;
String NavigatorBase::appName()
{
return "Netscape"_s;
}
String NavigatorBase::appVersion() const
{
// Version is everything in the user agent string past the "Mozilla/" prefix.
const String& agent = userAgent();
return agent.substring(agent.find('/') + 1);
}
String NavigatorBase::platform() const
{
#if OS(LINUX)
static LazyNeverDestroyed<String> platformName;
static std::once_flag onceKey;
std::call_once(onceKey, [] {
struct utsname osname;
platformName.construct(uname(&osname) >= 0 ? makeString(unsafeSpan(osname.sysname), " "_s, unsafeSpan(osname.machine)) : emptyString());
});
return platformName->isolatedCopy();
#elif PLATFORM(IOS_FAMILY)
return PAL::deviceName();
#elif OS(MACOS)
return "MacIntel"_s;
#elif OS(WINDOWS)
return "Win32"_s;
#else
return ""_s;
#endif
}
String NavigatorBase::appCodeName()
{
return "Mozilla"_s;
}
String NavigatorBase::product()
{
return WEBCORE_NAVIGATOR_PRODUCT;
}
String NavigatorBase::productSub()
{
return WEBCORE_NAVIGATOR_PRODUCT_SUB;
}
String NavigatorBase::vendor()
{
return WEBCORE_NAVIGATOR_VENDOR;
}
String NavigatorBase::vendorSub()
{
return WEBCORE_NAVIGATOR_VENDOR_SUB;
}
String NavigatorBase::language()
{
return defaultLanguage();
}
Vector<String> NavigatorBase::languages()
{
// We intentionally expose only the primary language for privacy reasons.
return { defaultLanguage() };
}
StorageManager& NavigatorBase::storage()
{
if (!m_storageManager)
m_storageManager = StorageManager::create(*this);
return *m_storageManager;
}
WebLockManager& NavigatorBase::locks()
{
if (!m_webLockManager)
m_webLockManager = WebLockManager::create(*this);
return *m_webLockManager;
}
ServiceWorkerContainer& NavigatorBase::serviceWorker()
{
ASSERT(!scriptExecutionContext() || scriptExecutionContext()->settingsValues().serviceWorkersEnabled);
if (!m_serviceWorkerContainer)
m_serviceWorkerContainer = ServiceWorkerContainer::create(protectedScriptExecutionContext().get(), *this).moveToUniquePtr();
return *m_serviceWorkerContainer;
}
ExceptionOr<ServiceWorkerContainer&> NavigatorBase::serviceWorker(ScriptExecutionContext& context)
{
if (RefPtr document = dynamicDowncast<Document>(context); document && document->isSandboxed(SandboxFlag::Origin))
return Exception { ExceptionCode::SecurityError, "Service Worker is disabled because the context is sandboxed and lacks the 'allow-same-origin' flag"_s };
return serviceWorker();
}
int NavigatorBase::hardwareConcurrency(ScriptExecutionContext& context)
{
static int numberOfCores;
if (context.requiresScriptExecutionTelemetry(ScriptTelemetryCategory::HardwareConcurrency)) {
auto randomSeed = static_cast<unsigned>(context.noiseInjectionHashSalt().value_or(0));
return 1 + WeakRandom { randomSeed }.getUint32(63);
}
static std::once_flag once;
std::call_once(once, [] {
// Enforce a maximum for the number of cores reported to mitigate
// fingerprinting for the minority of machines with large numbers of cores.
// If machines with more than 8 cores become commonplace, we should bump this number.
// see https://bugs.webkit.org/show_bug.cgi?id=132588 for the
// rationale behind this decision.
if (WTF::numberOfProcessorCores() < 8)
numberOfCores = 4;
else
numberOfCores = 8;
});
return numberOfCores;
}
WebCoreOpaqueRoot root(NavigatorBase* navigator)
{
return WebCoreOpaqueRoot { navigator };
}
} // namespace WebCore
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