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https://github.com/owasp-modsecurity/ModSecurity.git
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Decodes the url content before assing values to varibles
This commit is contained in:
98
src/utils.cc
98
src/utils.cc
@@ -23,6 +23,10 @@
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#include <random>
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#include <memory>
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#include <functional>
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#include <string>
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#include <iostream>
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#include <sstream>
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#if defined _MSC_VER
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#include <direct.h>
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@@ -78,6 +82,100 @@ std::string ascTime(time_t *t) {
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}
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void chomp(std::string *str) {
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std::string::size_type pos = str->find_last_not_of("\n\t");
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if (pos != std::string::npos) {
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str->erase(pos+1, str->length()-pos-1);
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}
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}
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const char SAFE[256] = {
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/* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
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/* 0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* 1 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* 2 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* 3 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
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/* 4 */ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* 5 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
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/* 6 */ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* 7 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
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/* 8 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* 9 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* A */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* B */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* C */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* D */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* E */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* F */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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const char HEX2DEC[256] = {
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/* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
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/* 0 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* 1 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* 2 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* 3 */ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1,
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/* 4 */ -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* 5 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* 6 */ -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* 7 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* 8 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* 9 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* A */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* B */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* C */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* D */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* E */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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/* F */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
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};
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std::string uri_decode(const std::string & sSrc) {
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// Note from RFC1630: "Sequences which start with a percent
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// sign but are not followed by two hexadecimal characters
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// (0-9, A-F) are reserved for future extension"
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const unsigned char * pSrc = (const unsigned char *)sSrc.c_str();
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const int SRC_LEN = sSrc.length();
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const unsigned char * const SRC_END = pSrc + SRC_LEN;
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// last decodable '%'
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const unsigned char * const SRC_LAST_DEC = SRC_END - 2;
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char * const pStart = new char[SRC_LEN];
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char * pEnd = pStart;
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while (pSrc < SRC_LAST_DEC) {
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if (*pSrc == '%') {
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char dec1, dec2;
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if (-1 != (dec1 = HEX2DEC[*(pSrc + 1)])
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&& -1 != (dec2 = HEX2DEC[*(pSrc + 2)])) {
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*pEnd++ = (dec1 << 4) + dec2;
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pSrc += 3;
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continue;
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}
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}
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*pEnd++ = *pSrc++;
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}
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// the last 2- chars
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while (pSrc < SRC_END) {
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*pEnd++ = *pSrc++;
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}
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std::string sResult(pStart, pEnd);
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delete [] pStart;
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return sResult;
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}
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void createDir(std::string dir, int mode) {
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#if defined _MSC_VER
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_mkdir(dir.data());
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