mirror of
https://github.com/owasp-modsecurity/ModSecurity.git
synced 2025-08-14 05:45:59 +03:00
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/*
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* ModSecurity, http://www.modsecurity.org/
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* Copyright (c) 2015 - 2020 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/rx.h"
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#include <string>
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#include <list>
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#include <memory>
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#include "src/operators/operator.h"
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#include "modsecurity/rule.h"
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#include "modsecurity/rule_message.h"
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#include "modsecurity/rule_with_actions.h"
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namespace modsecurity {
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namespace operators {
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bool Rx::init(const std::string &arg, std::string *error) {
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if (m_string->m_containsMacro == false) {
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m_re = new Regex(m_param);
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}
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return true;
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}
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bool Rx::evaluate(Transaction *transaction, RuleWithActions *rule,
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const std::string& input, RuleMessage *ruleMessage) {
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Regex *re;
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if (m_param.empty() && !m_string->m_containsMacro) {
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return true;
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}
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if (m_string->m_containsMacro) {
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std::string eparam(m_string->evaluate(transaction));
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re = new Regex(eparam);
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} else {
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re = m_re;
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}
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std::vector<Utils::SMatchCapture> captures;
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re->searchOneMatch(input, captures);
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if (rule && rule->hasCaptureAction() && transaction) {
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for (const Utils::SMatchCapture& capture : captures) {
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const std::string capture_substring(input.substr(capture.m_offset,capture.m_length));
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transaction->m_collections.m_tx_collection->storeOrUpdateFirst(
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std::to_string(capture.m_group), capture_substring);
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ms_dbg_a(transaction, 7, "Added regex subexpression TX." +
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std::to_string(capture.m_group) + ": " + capture_substring);
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transaction->m_matched.push_back(capture_substring);
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}
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}
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for (const auto & capture : captures) {
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logOffset(ruleMessage, capture.m_offset, capture.m_length);
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}
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if (!captures.empty()) {
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return true;
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}
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if (m_string->m_containsMacro) {
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delete re;
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}
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return false;
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}
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} // namespace operators
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} // namespace modsecurity
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