init

src/map/natmap.cpp

@@ -0,0 +1,42 @@
+#include "natmap.h"
+
+namespace otonat
+{
+
+NatMap::NatMap(): NatMap(Tins::NetworkInterface::all())
+{
+    //ctor
+}
+
+NatMap::NatMap(std::vector<Tins::NetworkInterface> interfaceList) : interfaces(interfaceList)
+{
+}
+
+NatMap::~NatMap()
+{
+    //dtor
+}
+
+NatMap::NatMap(const NatMap& other) : interfaces(other.interfaces)
+{
+    //copy ctor
+}
+
+NatMap& NatMap::operator=(const NatMap& rhs)
+{
+    if (this == &rhs) return *this; // handle self assignment
+
+    interfaces = rhs.interfaces;
+    return *this;
+}
+
+const Tins::IPv4Address NatMap::mapIPv4Address(const Tins::IPv4Address & ip, const Tins::NetworkInterface::Info & interfaceInfo)
+{
+    const uint32_t & netmask = interfaceInfo.netmask;
+    const uint32_t & interfaceIp = interfaceInfo.ip_addr;
+    const uint32_t networkStartIp = interfaceIp & netmask;
+    const uint32_t resultIp = (ip & ~netmask) | networkStartIp;
+    return Tins::IPv4Address(resultIp);
+}
+
+}

src/map/natmap.h

@@ -0,0 +1,28 @@
+#ifndef NATMAP_H
+#define NATMAP_H
+
+#include <vector>
+#include <tins/tins.h>
+
+namespace otonat
+{
+class NatMap
+{
+public:
+    NatMap();
+    NatMap(std::vector<Tins::NetworkInterface> interfaceList);
+    virtual ~NatMap();
+    NatMap(const NatMap& other);
+    NatMap& operator=(const NatMap& other);
+    std::vector<Tins::NetworkInterface> interfaces;
+    static const Tins::IPv4Address mapIPv4Address(const Tins::IPv4Address & ip, const Tins::NetworkInterface::Info & interfaceInfo);
+
+protected:
+
+private:
+
+};
+}
+
+
+#endif // NATMAP_H