Adds support for basic Multipart process

Adjustments will be needed, for instance: the logging support is still missing

src/request_body_processor/multipart.h

@@ -0,0 +1,52 @@
+/*
+ * 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 <iostream>
+
+
+#ifndef SRC_REQUEST_BODY_PROCESSOR_MULTIPART_H_
+#define SRC_REQUEST_BODY_PROCESSOR_MULTIPART_H_
+
+#include "modsecurity/assay.h"
+
+namespace ModSecurity {
+namespace RequestBodyProcessor {
+
+class Multipart {
+ public:
+    explicit Multipart(std::string header);
+    bool init();
+
+    bool boundaryContainsOnlyValidCharacters();
+    bool conuntBoundaryParameters();
+    bool process(std::string data);
+
+    ModSecurityStringVariables variables;
+ private:
+    void debug(int a, std::string str) {
+        std::cout << "Debug: " << str << std::endl;
+    }
+    std::string m_boundary;
+    std::string m_header;
+
+    bool m_boundaryStartsWithWhiteSpace = false;
+    bool m_boundaryIsQuoted = false;
+};
+
+}  // namespace RequestBodyProcessor
+}  // namespace ModSecurity
+
+#endif  // SRC_REQUEST_BODY_PROCESSOR_MULTIPART_H_