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https://github.com/owasp-modsecurity/ModSecurity.git
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c680ddf2cd
Among of other things the merge process was improved to detect if certain properties were set on the origin rule set.
83 lines
1.8 KiB
C++
83 lines
1.8 KiB
C++
/*
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* ModSecurity, http://www.modsecurity.org/
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* Copyright (c) 2015 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 "actions/transformations/parity_even_7bit.h"
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#include <iostream>
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#include <string>
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#include <algorithm>
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#include <functional>
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#include <cctype>
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#include <locale>
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#include <cstring>
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#include "modsecurity/transaction.h"
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#include "actions/transformations/transformation.h"
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namespace modsecurity {
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namespace actions {
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namespace transformations {
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std::string ParityEven7bit::evaluate(std::string value,
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Transaction *transaction) {
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std::string ret;
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unsigned char *input = NULL;
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input = reinterpret_cast<unsigned char *>
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(malloc(sizeof(char) * value.length()+1));
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if (input == NULL) {
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return "";
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}
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std::memcpy(input, value.c_str(), value.length()+1);
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inplace(input, value.length());
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ret.assign(reinterpret_cast<char *>(input), value.length());
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free(input);
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return ret;
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}
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bool ParityEven7bit::inplace(unsigned char *input, u_int64_t input_len) {
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u_int64_t i;
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i = 0;
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while (i < input_len) {
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unsigned int x = input[i];
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input[i] ^= input[i] >> 4;
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input[i] &= 0xf;
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if ((0x6996 >> input[i]) & 1) {
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input[i] = x | 0x80;
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} else {
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input[i] = x & 0x7f;
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}
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i++;
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}
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return true;
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}
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} // namespace transformations
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} // namespace actions
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} // namespace modsecurity
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