Regex search in collection data case insensitive fix

Author: airween

src/collection/backend/in_memory-per_process.cc

@@ -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);
+    Utils::Regex r(var, PCRE_CASELESS);
 
     for (const auto& x : *this) {
         //if (x.first.size() <= keySize + 1) {

src/utils/regex.cc

@@ -49,6 +49,18 @@ Regex::Regex(const std::string& pattern_)
     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);
+
+    m_pc = pcre_compile(pattern.c_str(), flags,
+        &errptr, &erroffset, NULL);
+
+    m_pce = pcre_study(m_pc, pcre_study_opt, &errptr);
+}
 
 Regex::~Regex() {
     if (m_pc != NULL) {

src/utils/regex.h

@@ -27,7 +27,7 @@
 namespace modsecurity {
 namespace Utils {
 
-#define OVECCOUNT 30
+#define OVECCOUNT 50
 
 class SMatch {
  public:
@@ -51,6 +51,7 @@ class SMatch {
 class Regex {
  public:
     explicit Regex(const std::string& pattern_);
+    explicit Regex(const std::string& pattern_, int flags);
     ~Regex();
 
     // m_pc and m_pce can't be easily copied