ManagedRoute, which applies C++ RAII to injected routes. Move RoutingTable to attic.

osdep/ManagedRoute.hpp

@@ -0,0 +1,95 @@
+#ifndef ZT_MANAGEDROUTE_HPP
+#define ZT_MANAGEDROUTE_HPP
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "../node/InetAddress.hpp"
+#include "../node/Utils.hpp"
+
+#include <stdexcept>
+#include <vector>
+
+namespace ZeroTier {
+
+/**
+ * A ZT-managed route that used C++ RAII semantics to automatically clean itself up on deallocate
+ */
+class ManagedRoute
+{
+public:
+	ManagedRoute() :
+		target(),
+		via(),
+		applied(false)
+	{
+		device[0] = (char)0;
+	}
+
+	~ManagedRoute()
+	{
+		this->remove();
+	}
+
+	/**
+	 * @param target Route target (e.g. 0.0.0.0/0 for default)
+	 * @param via Route next L3 hop or NULL InetAddress if local
+	 * @param device Device name/ID if 'via' is null and route is local, otherwise ignored
+	 * @return True if route was successfully set
+	 */
+	inline bool set(const InetAddress &target,const InetAddress &via,const char *device)
+	{
+		if ((!via)&&((!device)||(!device[0])))
+			return false;
+		this->remove();
+		this->target = target;
+		this->via = via;
+		this->applied = true;
+		Utils::scopy(this->device,sizeof(this->device),device);
+		return this->sync();
+	}
+
+	/**
+	 * Set or update currently set route
+	 *
+	 * This must be called periodically for routes that shadow others so that
+	 * shadow routes can be updated. In some cases it has no effect
+	 *
+	 * @return True if route add/update was successful
+	 */
+	bool sync();
+
+	/**
+	 * Remove and clear this ManagedRoute (also done automatically on destruct)
+	 *
+	 * This does nothing if this ManagedRoute is not set or has already been removed.
+	 */
+	void remove();
+
+private:
+	/*
+	static inline bool _viaCompare(const InetAddress &v1,const InetAddress &v2)
+	{
+		if (v1) {
+			if (v2)
+				return v1.ipsEqual(v2);
+			else return false;
+		} else if (v2)
+			return false;
+		else return true;
+	}
+	*/
+
+	// non-copyable
+	ManagedRoute(const ManagedRoute &mr) {}
+	inline ManagedRoute &operator=(const ManagedRoute &mr) { return *this; }
+
+	InetAddress target;
+	InetAddress via;
+	bool applied;
+	char device[128];
+};
+
+} // namespace ZeroTier
+
+#endif