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/*
* Copyright (C) 2014, 2015 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"
#if ENABLE(CONTENT_EXTENSIONS)
namespace WebCore {
namespace ContentExtensions {
ContentExtensionRule::ContentExtensionRule(Trigger&& trigger, Action&& action)
: m_trigger(WTFMove(trigger))
, m_action(WTFMove(action))
{
ASSERT(!m_trigger.urlFilter.isEmpty());
}
static String deserializeString(const SerializedActionByte* actions, const uint32_t actionsLength, uint32_t beginIndex)
{
uint32_t prefixLength = sizeof(uint32_t) + sizeof(bool);
uint32_t stringStartIndex = beginIndex + prefixLength;
RELEASE_ASSERT(actionsLength >= stringStartIndex);
uint32_t stringLength = *reinterpret_cast<const uint32_t*>(&actions[beginIndex]);
bool wideCharacters = actions[beginIndex + sizeof(uint32_t)];
if (wideCharacters) {
RELEASE_ASSERT(actionsLength >= stringStartIndex + stringLength * sizeof(UChar));
return String(reinterpret_cast<const UChar*>(&actions[stringStartIndex]), stringLength);
}
RELEASE_ASSERT(actionsLength >= stringStartIndex + stringLength * sizeof(LChar));
return String(reinterpret_cast<const LChar*>(&actions[stringStartIndex]), stringLength);
}
Action Action::deserialize(const SerializedActionByte* actions, const uint32_t actionsLength, uint32_t location)
{
RELEASE_ASSERT(location < actionsLength);
auto actionType = static_cast<ActionType>(actions[location]);
switch (actionType) {
case ActionType::BlockCookies:
case ActionType::BlockLoad:
case ActionType::IgnorePreviousRules:
case ActionType::MakeHTTPS:
return Action(actionType, location);
case ActionType::CSSDisplayNoneSelector:
case ActionType::Notify:
return Action(actionType, deserializeString(actions, actionsLength, location + sizeof(ActionType)), location);
}
RELEASE_ASSERT_NOT_REACHED();
}
ActionType Action::deserializeType(const SerializedActionByte* actions, const uint32_t actionsLength, uint32_t location)
{
RELEASE_ASSERT(location < actionsLength);
ActionType type = static_cast<ActionType>(actions[location]);
switch (type) {
case ActionType::BlockCookies:
case ActionType::BlockLoad:
case ActionType::Notify:
case ActionType::IgnorePreviousRules:
case ActionType::CSSDisplayNoneSelector:
case ActionType::MakeHTTPS:
return type;
}
RELEASE_ASSERT_NOT_REACHED();
}
uint32_t Action::serializedLength(const SerializedActionByte* actions, const uint32_t actionsLength, uint32_t location)
{
RELEASE_ASSERT(location < actionsLength);
switch (static_cast<ActionType>(actions[location])) {
case ActionType::BlockCookies:
case ActionType::BlockLoad:
case ActionType::IgnorePreviousRules:
case ActionType::MakeHTTPS:
return sizeof(ActionType);
case ActionType::Notify:
case ActionType::CSSDisplayNoneSelector: {
uint32_t prefixLength = sizeof(ActionType) + sizeof(uint32_t) + sizeof(bool);
uint32_t stringStartIndex = location + prefixLength;
RELEASE_ASSERT(actionsLength >= stringStartIndex);
uint32_t stringLength = *reinterpret_cast<const unsigned*>(&actions[location + sizeof(ActionType)]);
bool wideCharacters = actions[location + sizeof(ActionType) + sizeof(uint32_t)];
if (wideCharacters)
return prefixLength + stringLength * sizeof(UChar);
return prefixLength + stringLength * sizeof(LChar);
}
}
RELEASE_ASSERT_NOT_REACHED();
}
Trigger Trigger::isolatedCopy() const
{
return {
urlFilter.isolatedCopy(),
urlFilterIsCaseSensitive,
topURLConditionIsCaseSensitive,
flags,
conditions.isolatedCopy(),
conditionType
};
}
Action Action::isolatedCopy() const
{
if (hasStringArgument(m_type)) {
return {
m_type,
m_stringArgument.isolatedCopy(),
m_actionID
};
} else {
return {
m_type,
m_actionID
};
}
}
} // namespace ContentExtensions
} // namespace WebCore
#endif // ENABLE(CONTENT_EXTENSIONS)
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