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