/* * Copyright (C) 2015-2017 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. AND ITS CONTRIBUTORS ``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 ITS 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. */ #import "config.h" #import "VersionChecks.h" #import <WebCore/RuntimeApplicationChecks.h> #import <mach-o/dyld.h> #import <mutex> namespace WebKit { static NSString * const WebKitLinkedOnOrAfterEverythingKey = @"WebKitLinkedOnOrAfterEverything"; bool linkedOnOrAfter(SDKVersion sdkVersion, AssumeSafariIsAlwaysLinkedOnAfter assumeSafariIsAlwaysLinkedOnAfter) { static bool linkedOnOrAfterEverything = false; static bool isSafari = false; static std::once_flag once; std::call_once(once, [] { #if PLATFORM(IOS_FAMILY) if (WebCore::IOSApplication::isMobileSafari()) isSafari = true; #elif PLATFORM(MAC) if (WebCore::MacApplication::isSafari()) isSafari = true; #endif if ([[NSUserDefaults standardUserDefaults] boolForKey:WebKitLinkedOnOrAfterEverythingKey]) linkedOnOrAfterEverything = true; }); if (UNLIKELY(linkedOnOrAfterEverything)) return true; if (isSafari && assumeSafariIsAlwaysLinkedOnAfter == AssumeSafariIsAlwaysLinkedOnAfter::Yes) return true; auto sdkVersionAsInteger = static_cast<uint32_t>(sdkVersion); return sdkVersionAsInteger && dyld_get_program_sdk_version() >= sdkVersionAsInteger; } }