89 lines
3.2 KiB
Plaintext
89 lines
3.2 KiB
Plaintext
/*
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "config.h"
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#import "PublicSuffix.h"
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#if ENABLE(PUBLIC_SUFFIX_LIST)
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#import <pal/spi/cf/CFNetworkSPI.h>
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#import <wtf/HashMap.h>
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#import <wtf/text/StringHash.h>
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#import <wtf/URL.h>
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#import <wtf/cocoa/NSURLExtras.h>
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namespace WebCore {
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bool isPublicSuffix(const String& domain)
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{
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// Explicitly cast the domain to a NSString before calling decodeHostName() so we get a NSString back instead of a String.
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NSString *host = decodeHostName((NSString *)domain);
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return host && _CFHostIsDomainTopLevel((__bridge CFStringRef)host);
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}
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String topPrivatelyControlledDomain(const String& domain)
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{
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if (domain.isEmpty())
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return { };
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if (!domain.isAllASCII())
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return domain;
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static Lock cacheLock;
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Locker locker { cacheLock };
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static NeverDestroyed<HashMap<String, String, ASCIICaseInsensitiveHash>> cache;
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auto isolatedDomain = domain.isolatedCopy();
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constexpr auto maximumSizeToPreventUnlimitedGrowth = 128;
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if (cache.get().size() == maximumSizeToPreventUnlimitedGrowth)
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cache.get().remove(cache.get().random());
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return cache.get().ensure(isolatedDomain, [&isolatedDomain] {
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const auto lowercaseDomain = isolatedDomain.convertToASCIILowercase();
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if (lowercaseDomain == "localhost")
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return lowercaseDomain;
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if (URL::hostIsIPAddress(lowercaseDomain))
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return lowercaseDomain;
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size_t separatorPosition;
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for (unsigned labelStart = 0; (separatorPosition = lowercaseDomain.find('.', labelStart)) != notFound; labelStart = separatorPosition + 1) {
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if (isPublicSuffix(lowercaseDomain.substring(separatorPosition + 1)))
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return lowercaseDomain.substring(labelStart);
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}
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return String();
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}).iterator->value.isolatedCopy();
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}
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String decodeHostName(const String& domain)
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{
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return WTF::decodeHostName(domain);
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}
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}
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#endif
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