Adds support to SecRuleRemoveByMsg

Author: Felipe Zimmerle

headers/modsecurity/rule.h

@@ -76,6 +76,7 @@ class Rule {
     std::vector<std::string> getActionNames();
     std::vector<actions::Action *> getActionsByName(const std::string& name);
     bool containsTag(const std::string& name, Transaction *t);
+    bool containsMsg(const std::string& name, Transaction *t);
     bool containsDisruptiveAction();
 
     int refCountDecreaseAndCheck() {

headers/modsecurity/rules_exceptions.h

@@ -50,6 +50,8 @@ class RulesExceptions {
     bool contains(int a);
     bool merge(RulesExceptions& from);
 
+    bool loadRemoveRuleByMsg(const std::string &msg, std::string *error);
+
     bool loadUpdateTargetByTag(const std::string &tag,
         std::unique_ptr<std::vector<std::unique_ptr<Variables::Variable> > > var,
         std::string *error);
@@ -60,6 +62,7 @@ class RulesExceptions {
 
     std::unordered_multimap<std::string, std::unique_ptr<Variables::Variable>> m_variable_update_target_by_tag;
     std::unordered_multimap<double, std::unique_ptr<Variables::Variable>> m_variable_update_target_by_id;
+    std::list<std::string> m_remove_rule_by_msg;
 
  private:
     std::list<std::pair<int, int> > m_ranges;