Adds first PoC for the operator offset feature

headers/modsecurity/variable_origin.h

@@ -0,0 +1,46 @@
+/*
+ * 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.
+ *
+ */
+
+#ifdef __cplusplus
+#include <string>
+#endif
+
+#ifndef HEADERS_MODSECURITY_VARIABLE_ORIGIN_H_
+#define HEADERS_MODSECURITY_VARIABLE_ORIGIN_H_
+
+
+#ifndef __cplusplus
+typedef struct DebugLog_t DebugLog;
+#endif
+
+#ifdef __cplusplus
+
+namespace modsecurity {
+
+
+/** @ingroup ModSecurity_CPP_API */
+class VariableOrigin {
+ public:
+    VariableOrigin() { }
+    virtual std::string toText() = 0;
+};
+
+
+}  // namespace modsecurity
+#endif
+
+#endif  // HEADERS_MODSECURITY_VARIABLE_ORIGIN_H_
+
+