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- Avoids copying std::shared_ptr when lifetime of the RuleMessage is controlled by the caller. - The RuleMessage instance is created in RuleWithActions::evaluate and then used to call the overloaded version of this method that is specialized by subclasses. - Once the call to the overloaded method returns, the std::shared_ptr is destroyed as it's not stored by any of the callers, so it can be replaced with a stack variable and avoid paying the cost of copying the std::shared_ptr (and its control block that is guaranteed to be thread-safe and thus is not a straightforward pointer copy) - Introduced RuleMessage::reset because this is required by RuleWithActions::performLogging when it's not the 'last log', the rule has multimatch and it's to be logged. - The current version is creating allocating another instance of RuleMessage on the heap to copy the Rule & Transaction related state while all the other members in the RuleMessage are set to their default values. - The new version leverages the existent, unused and incomplete function 'clean' (renamed as 'reset') to do this on the current instance. - Notice that the current code preserves the value of m_saveMessage, so 'reset' provides an argument for the caller to control whether this member should be reinitialized.
49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
/*
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* ModSecurity, http://www.modsecurity.org/
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* Copyright (c) 2015 - 2021 Trustwave Holdings, Inc. (http://www.trustwave.com/)
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*
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* You may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* If any of the files related to licensing are missing or if you have any
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* other questions related to licensing please contact Trustwave Holdings, Inc.
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* directly using the email address security@modsecurity.org.
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*
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*/
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#include "src/operators/within.h"
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#include <string>
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#include "src/operators/operator.h"
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namespace modsecurity {
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namespace operators {
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bool Within::evaluate(Transaction *transaction, RuleWithActions *rule,
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const std::string &str, RuleMessage &ruleMessage) {
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bool res = false;
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size_t pos = 0;
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std::string paramTarget(m_string->evaluate(transaction));
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if (str.empty()) {
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return true;
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}
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pos = paramTarget.find(str);
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res = pos != std::string::npos;
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if (res) {
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logOffset(ruleMessage, pos, str.size());
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}
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return res;
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}
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} // namespace operators
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} // namespace modsecurity
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