Adds support the variable rule

Issue #1016

src/variables/rule.cc

@@ -0,0 +1,103 @@
+/*
+ * ModSecurity, http://www.modsecurity.org/
+ * Copyright (c) 2015 Trustwave Holdings, Inc. (http://www.trustwave.com/)
+ *
+ * You may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * If any of the files related to licensing are missing or if you have any
+ * other questions related to licensing please contact Trustwave Holdings, Inc.
+ * directly using the email address security@modsecurity.org.
+ *
+ */
+
+#include "variables/rule.h"
+
+#include <time.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <libxml/xmlschemas.h>
+#include <libxml/xpath.h>
+#include <libxml/tree.h>
+#include <libxml/parser.h>
+#include <libxml/xpathInternals.h>
+
+#include <iostream>
+#include <string>
+#include <vector>
+#include <list>
+#include <utility>
+
+#include "modsecurity/transaction.h"
+#include "modsecurity/rules_properties.h"
+#include "modsecurity/rules.h"
+
+#include "src/request_body_processor/xml.h"
+#include "src/actions/action.h"
+#include "src/actions/severity.h"
+#include "src/actions/xmlns.h"
+#include "src/actions/log_data.h"
+#include "src/actions/msg.h"
+
+namespace modsecurity {
+namespace Variables {
+
+void Rule::evaluateInternal(Transaction *t,
+    modsecurity::Rule *rule,
+    std::vector<const collection::Variable *> *l) {
+    std::map<std::string, std::string> envs;
+
+    // id
+    envs.insert(std::pair<std::string, std::string>("RULE:id",
+        std::to_string(rule->rule_id)));    
+
+    // rev
+    envs.insert(std::pair<std::string, std::string>("RULE:rev",
+        rule->m_rev));
+
+    // severity
+    std::vector<actions::Action *> acts = rule->getActionsByName("severity");
+    for (actions::Action *i : acts) {
+        actions::Severity *a = reinterpret_cast<actions::Severity *>(i);
+        if (a) {
+            envs.insert(std::pair<std::string, std::string>("RULE:severity",
+                std::to_string(a->m_severity)));
+        }
+    }
+
+    // logdata
+    acts = rule->getActionsByName("logdata");
+    for (actions::Action *i : acts) {
+        actions::LogData *a = reinterpret_cast<actions::LogData *>(i);
+        if (a) {
+            envs.insert(std::pair<std::string, std::string>("RULE:logdata",
+                a->data(t)));
+        }
+    }
+
+    // msg
+    acts = rule->getActionsByName("msg");
+    for (actions::Action *i : acts) {
+        actions::Msg *a = reinterpret_cast<actions::Msg *>(i);
+        if (a) {
+            envs.insert(std::pair<std::string, std::string>("RULE:msg",
+                a->data(t)));
+        }
+    }
+
+    for (auto& x : envs) {
+        if ((x.first.substr(0, m_name.size() + 1).compare(m_name + ":") != 0)
+            && (x.first != m_name)) {
+            continue;
+        }
+        l->push_back(new collection::Variable(x.first, x.second));
+    }
+}
+
+}  // namespace Variables
+}  // namespace modsecurity

src/variables/rule.h

@@ -0,0 +1,43 @@
+/*
+ * ModSecurity, http://www.modsecurity.org/
+ * Copyright (c) 2015 Trustwave Holdings, Inc. (http://www.trustwave.com/)
+ *
+ * You may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * If any of the files related to licensing are missing or if you have any
+ * other questions related to licensing please contact Trustwave Holdings, Inc.
+ * directly using the email address security@modsecurity.org.
+ *
+ */
+
+#include <string>
+#include <vector>
+#include <list>
+
+#ifndef SRC_VARIABLES_RULE_H_
+#define SRC_VARIABLES_RULE_H_
+
+#include "variables/variable.h"
+
+namespace modsecurity {
+
+class Transaction;
+namespace Variables {
+
+class Rule : public Variable {
+ public:
+    explicit Rule(std::string _name)
+        : Variable(_name) { };
+
+    void evaluateInternal(Transaction *transaction,
+        modsecurity::Rule *rule,
+        std::vector<const collection::Variable *> *l) override;
+};
+
+}  // namespace Variables
+}  // namespace modsecurity
+
+#endif  // SRC_VARIABLES_RULE_H_