Consolidate routing table code.

osdep/RoutingTable.hpp

@@ -0,0 +1,77 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ZT_ROUTINGTABLE_HPP
+#define ZT_ROUTINGTABLE_HPP
+
+#include <vector>
+
+#include "../node/Constants.hpp"
+#include "../node/InetAddress.hpp"
+
+namespace ZeroTier {
+
+class RoutingTable
+{
+public:
+	struct Entry
+	{
+		/**
+		 * Destination IP and netmask bits (CIDR format)
+		 */
+		InetAddress destination;
+
+		/**
+		 * Gateway or null address if direct link-level route, netmask/port part of InetAddress not used
+		 */
+		InetAddress gateway;
+
+		/**
+		 * System device index or ID (not included in comparison operators, may not be set on all platforms)
+		 */
+		int deviceIndex;
+
+		/**
+		 * Metric or hop count -- higher = lower routing priority
+		 */
+		int metric;
+
+		/**
+		 * Interface scoped route? (always false if not meaningful on this OS)
+		 */
+		bool ifscope;
+
+		/**
+		 * System device name (may be empty if it doesn't exist or isn't important on this OS)
+		 */
+		char device[128];
+
+		/**
+		 * @return True if at least one required field is present (object is not null)
+		 */
+		inline operator bool() const { return ((destination)||(gateway)); }
+	};
+
+	static std::vector<RoutingTableEntry> get(bool includeLinkLocal,bool includeLoopback);
+
+	static RoutingTableEntry set(const InetAddress &destination,const InetAddress &gateway,const char *device,int metric,bool ifscope);
+};
+
+} // namespace ZeroTier
+
+#endif