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/*
* Copyright (C) 2014-2021 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.
*/
#include "config.h"
#include "ContentExtensionRule.h"
#include <wtf/CrossThreadCopier.h>
#if ENABLE(CONTENT_EXTENSIONS)
namespace WebCore::ContentExtensions {
ContentExtensionRule::ContentExtensionRule(Trigger&& trigger, Action&& action)
: m_trigger(WTFMove(trigger))
, m_action(WTFMove(action))
{
ASSERT(!m_trigger.urlFilter.isEmpty());
}
template<size_t index, typename... Types>
struct VariantDeserializerHelper {
using VariantType = typename std::variant_alternative<index, std::variant<Types...>>::type;
static std::variant<Types...> deserialize(Span<const uint8_t> span, size_t i)
{
if (i == index)
return VariantType::deserialize(span);
return VariantDeserializerHelper<index - 1, Types...>::deserialize(span, i);
}
static size_t serializedLength(Span<const uint8_t> span, size_t i)
{
if (i == index)
return VariantType::serializedLength(span);
return VariantDeserializerHelper<index - 1, Types...>::serializedLength(span, i);
}
};
template<typename... Types>
struct VariantDeserializerHelper<0, Types...> {
using VariantType = typename std::variant_alternative<0, std::variant<Types...>>::type;
static std::variant<Types...> deserialize(Span<const uint8_t> span, size_t i)
{
ASSERT_UNUSED(i, !i);
return VariantType::deserialize(span);
}
static size_t serializedLength(Span<const uint8_t> span, size_t i)
{
ASSERT_UNUSED(i, !i);
return VariantType::serializedLength(span);
}
};
template<typename T> struct VariantDeserializer;
template<typename... Types> struct VariantDeserializer<std::variant<Types...>> {
static std::variant<Types...> deserialize(Span<const uint8_t> span, size_t i)
{
return VariantDeserializerHelper<sizeof...(Types) - 1, Types...>::deserialize(span, i);
}
static size_t serializedLength(Span<const uint8_t> span, size_t i)
{
return VariantDeserializerHelper<sizeof...(Types) - 1, Types...>::serializedLength(span, i);
}
};
DeserializedAction DeserializedAction::deserialize(Span<const uint8_t> serializedActions, uint32_t location)
{
RELEASE_ASSERT(location < serializedActions.size());
return { location, VariantDeserializer<ActionData>::deserialize(serializedActions.subspan(location + 1), serializedActions[location]) };
}
size_t DeserializedAction::serializedLength(Span<const uint8_t> serializedActions, uint32_t location)
{
RELEASE_ASSERT(location < serializedActions.size());
return 1 + VariantDeserializer<ActionData>::serializedLength(serializedActions.subspan(location + 1), serializedActions[location]);
}
Trigger Trigger::isolatedCopy() const
{
return {
urlFilter.isolatedCopy(),
urlFilterIsCaseSensitive,
topURLFilterIsCaseSensitive,
frameURLFilterIsCaseSensitive,
flags,
conditions.isolatedCopy()
};
}
Action Action::isolatedCopy() const
{
return { crossThreadCopy(m_data) };
}
} // namespace WebCore::ContentExtensions
#endif // ENABLE(CONTENT_EXTENSIONS)
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