/* * Copyright (C) 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. ``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 "UTIRegistry.h" #if USE(CG) #include <wtf/HashSet.h> #include <wtf/NeverDestroyed.h> #include <ImageIO/ImageIO.h> #if ENABLE(WEB_ARCHIVE) || ENABLE(MHTML) #include "ArchiveFactory.h" #endif namespace WebCore { HashSet<String>& allowedImageUTIs() { // CG at least supports the following standard image types: static NeverDestroyed<HashSet<String>> s_allowedImageUTIs = std::initializer_list<String> { "com.compuserve.gif", "com.microsoft.bmp", "com.microsoft.cur", "com.microsoft.ico", "public.jpeg", "public.jpeg-2000", "public.mpo-image", "public.png", "public.tiff", }; #ifndef NDEBUG // But make sure that all of them are really supported. static bool checked = false; if (!checked) { RetainPtr<CFArrayRef> systemImageUTIs = adoptCF(CGImageSourceCopyTypeIdentifiers()); CFIndex count = CFArrayGetCount(systemImageUTIs.get()); for (auto& imageUTI : s_allowedImageUTIs.get()) { RetainPtr<CFStringRef> string = imageUTI.createCFString(); ASSERT(CFArrayContainsValue(systemImageUTIs.get(), CFRangeMake(0, count), string.get())); } checked = true; } #endif return s_allowedImageUTIs.get(); } bool isAllowedImageUTI(const String& imageUTI) { return !imageUTI.isEmpty() && allowedImageUTIs().contains(imageUTI); } } #endif