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V3/collection re fix #2018

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V3/collection re fix #2018

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3334d2a
Regex search in collection data case insensitive fix
airween Feb 5, 2019
4e1b99a
Fixed regex case insensitive search bug in LMDB
airween Feb 5, 2019
640daa4
Added test cases
airween Feb 5, 2019
ea937cf
Increment OVECCOUNT value for bigger regex's
airween Feb 7, 2019
8040904
Removed pcre dependency from outside of regex class
airween Feb 19, 2019
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2 changes: 1 addition & 1 deletion src/collection/backend/in_memory-per_process.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -134,7 +134,7 @@ void InMemoryPerProcess::resolveRegularExpression(const std::string& var,
//std::string name = std::string(var, var.find(":") + 2,
// var.size() - var.find(":") - 3);
//size_t keySize = col.size();
Utils::Regex r(var, PCRE_CASELESS);
Utils::Regex r(var, true);

for (const auto& x : *this) {
//if (x.first.size() <= keySize + 1) {
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2 changes: 1 addition & 1 deletion src/collection/backend/lmdb.cc
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Expand Up @@ -538,7 +538,7 @@ void LMDB::resolveRegularExpression(const std::string& var,
MDB_cursor *cursor;
size_t pos;

Utils::Regex r(var, PCRE_CASELESS);
Utils::Regex r(var, true);

rc = mdb_txn_begin(m_env, NULL, 0, &txn);
lmdb_debug(rc, "txn", "resolveRegularExpression");
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19 changes: 5 additions & 14 deletions src/utils/regex.cc
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Expand Up @@ -38,24 +38,15 @@ namespace modsecurity {
namespace Utils {


Regex::Regex(const std::string& pattern_)
Regex::Regex(const std::string& pattern_, bool caseSensitive)
: pattern(pattern_.empty() ? ".*" : pattern_) {
const char *errptr = NULL;
int erroffset;
int flags = (PCRE_DOTALL|PCRE_MULTILINE);

m_pc = pcre_compile(pattern.c_str(), PCRE_DOTALL|PCRE_MULTILINE,
&errptr, &erroffset, NULL);

m_pce = pcre_study(m_pc, pcre_study_opt, &errptr);
}

Regex::Regex(const std::string& pattern_, int flags)
: pattern(pattern_.empty() ? ".*" : pattern_){
const char *errptr = NULL;
int erroffset;

flags |= (PCRE_DOTALL|PCRE_MULTILINE);

if (caseSensitive == true) {
flags |= PCRE_CASELESS;
}
m_pc = pcre_compile(pattern.c_str(), flags,
&errptr, &erroffset, NULL);

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3 changes: 1 addition & 2 deletions src/utils/regex.h
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Expand Up @@ -50,8 +50,7 @@ class SMatch {

class Regex {
public:
explicit Regex(const std::string& pattern_);
explicit Regex(const std::string& pattern_, int flags);
explicit Regex(const std::string& pattern_, bool caseSensitive = false);
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@zimmerle zimmerle Mar 11, 2019

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You may not need this to be explicit anylonger.

~Regex();

// m_pc and m_pce can't be easily copied
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