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/*
* Copyright (C) 2019 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.
*/
#pragma once
#include "PublicSuffix.h"
#include "SecurityOriginData.h"
#include <wtf/HashTraits.h>
#include <wtf/URL.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class RegistrableDomain {
WTF_MAKE_FAST_ALLOCATED;
public:
RegistrableDomain() = default;
explicit RegistrableDomain(const URL& url)
: RegistrableDomain(registrableDomainFromHost(url.host().toString()))
{
}
explicit RegistrableDomain(const SecurityOriginData& origin)
: RegistrableDomain(registrableDomainFromHost(origin.host))
{
}
bool isEmpty() const { return m_registrableDomain.isEmpty() || m_registrableDomain == "nullOrigin"_s; }
String& string() { return m_registrableDomain; }
const String& string() const { return m_registrableDomain; }
bool operator!=(const RegistrableDomain& other) const { return m_registrableDomain != other.m_registrableDomain; }
bool operator==(const RegistrableDomain& other) const { return m_registrableDomain == other.m_registrableDomain; }
bool operator==(const char* other) const { return m_registrableDomain == other; }
bool matches(const URL& url) const
{
return matches(url.host());
}
bool matches(const SecurityOriginData& origin) const
{
return matches(origin.host);
}
RegistrableDomain isolatedCopy() const { return RegistrableDomain { m_registrableDomain.isolatedCopy() }; }
RegistrableDomain(WTF::HashTableDeletedValueType)
: m_registrableDomain(WTF::HashTableDeletedValue) { }
bool isHashTableDeletedValue() const { return m_registrableDomain.isHashTableDeletedValue(); }
unsigned hash() const { return m_registrableDomain.hash(); }
struct RegistrableDomainHash {
static unsigned hash(const RegistrableDomain& registrableDomain) { return registrableDomain.m_registrableDomain.hash(); }
static bool equal(const RegistrableDomain& a, const RegistrableDomain& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = false;
};
static RegistrableDomain uncheckedCreateFromRegistrableDomainString(const String& domain)
{
return RegistrableDomain { domain };
}
static RegistrableDomain uncheckedCreateFromHost(const String& host)
{
#if ENABLE(PUBLIC_SUFFIX_LIST)
auto registrableDomain = topPrivatelyControlledDomain(host);
if (registrableDomain.isEmpty())
return uncheckedCreateFromRegistrableDomainString(host);
return RegistrableDomain { registrableDomain };
#else
return uncheckedCreateFromRegistrableDomainString(host);
#endif
}
template<class Encoder> void encode(Encoder&) const;
template<class Decoder> static Optional<RegistrableDomain> decode(Decoder&);
protected:
private:
explicit RegistrableDomain(const String& domain)
: m_registrableDomain { domain.isEmpty() ? "nullOrigin"_s : domain }
{
}
bool matches(StringView host) const
{
if (host.isEmpty() && m_registrableDomain == "nullOrigin"_s)
return true;
if (!host.endsWith(m_registrableDomain))
return false;
if (host.length() == m_registrableDomain.length())
return true;
return host[host.length() - m_registrableDomain.length() - 1] == '.';
}
static inline String registrableDomainFromHost(const String& host)
{
#if ENABLE(PUBLIC_SUFFIX_LIST)
auto domain = topPrivatelyControlledDomain(host);
#else
auto domain = host;
#endif
if (host.isEmpty())
domain = "nullOrigin"_s;
else if (domain.isEmpty())
domain = host;
return domain;
}
String m_registrableDomain;
};
template<class Encoder>
void RegistrableDomain::encode(Encoder& encoder) const
{
encoder << m_registrableDomain;
}
template<class Decoder>
Optional<RegistrableDomain> RegistrableDomain::decode(Decoder& decoder)
{
Optional<String> domain;
decoder >> domain;
if (!domain)
return WTF::nullopt;
RegistrableDomain registrableDomain;
registrableDomain.m_registrableDomain = WTFMove(*domain);
return registrableDomain;
}
inline bool areRegistrableDomainsEqual(const URL& a, const URL& b)
{
return RegistrableDomain(a).matches(b);
}
} // namespace WebCore
namespace WTF {
template<> struct DefaultHash<WebCore::RegistrableDomain> {
using Hash = WebCore::RegistrableDomain::RegistrableDomainHash;
};
template<> struct HashTraits<WebCore::RegistrableDomain> : SimpleClassHashTraits<WebCore::RegistrableDomain> { };
}