Basic L2/L3 filter for rules engine (not integrated yet) and some cleanup.

node/Filter.hpp

@@ -0,0 +1,73 @@
+/*
+ * 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_FILTER_HPP
+#define ZT_FILTER_HPP
+
+#include <stdint.h>
+
+#include "Constants.hpp"
+#include "../include/ZeroTierOne.h"
+
+namespace ZeroTier {
+
+class Address;
+class RuntimeEnvironment;
+class MAC;
+
+/**
+ * Network packet filter for rules engine
+ */
+class Filter
+{
+public:
+	/**
+	 * Apply a list of rules to a packet
+	 *
+	 * This returns the matching TARGET rule entry if there is a match or NULL
+	 * if no match is found.
+	 *
+	 * @param ztSource Source ZeroTier address
+	 * @param ztDest Destination ZeroTier address
+	 * @param macSource Ethernet layer source address
+	 * @param macDest Ethernet layer destination address
+	 * @param frameData Ethernet frame data
+	 * @param frameLen Ethernet frame payload length
+	 * @param etherType 16-bit ethernet type ID
+	 * @param vlanId 16-bit VLAN ID
+	 * @param rules Pointer to array of rules
+	 * @param ruleCount Number of rules
+	 * @return Pointer to rules[] to matching TARGET, or NULL if no match
+	 */
+	static const ZT_VirtualNetworkRule *run(
+		const RuntimeEnvironment *RR,
+		const Address &ztSource,
+		const Address &ztDest,
+		const MAC &macSource,
+		const MAC &macDest,
+		const uint8_t *frameData,
+		const unsigned int frameLen,
+		const unsigned int etherType,
+		const unsigned int vlanId,
+		const ZT_VirtualNetworkRule *rules,
+		const unsigned int ruleCount);
+};
+
+} // namespace ZeroTier
+
+#endif