Work on in-place testnet support.

testnet/TestEthernetTap.hpp

@@ -0,0 +1,130 @@
+/*
+ * ZeroTier One - Global Peer to Peer Ethernet
+ * Copyright (C) 2011-2014  ZeroTier Networks LLC
+ *
+ * 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/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#ifndef ZT_TESTETHERNETTAP_HPP
+#define ZT_TESTETHERNETTAP_HPP
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <stdexcept>
+#include <queue>
+#include <string>
+
+#include "../node/AtomicCounter.hpp"
+#include "../node/SharedPtr.hpp"
+#include "../node/EthernetTap.hpp"
+#include "../node/Thread.hpp"
+#include "../node/Mutex.hpp"
+#include "Condition.hpp"
+
+// Ethernet frame type to use on fake testnet
+#define ZT_TEST_ETHERNET_ETHERTYPE 0xdead
+
+namespace ZeroTier {
+
+class TestEthernetTapFactory;
+
+class TestEthernetTap : public EthernetTap
+{
+	friend class SharedPtr<TestEthernetTap>;
+
+private:
+	struct TestFrame
+	{
+		TestFrame() : len(0) {}
+		TestFrame(const MAC &f,const MAC &t,const void *d,unsigned int l) :
+			from(f),
+			to(t),
+			len(l)
+		{
+			memcpy(data,d,l);
+		}
+		MAC from;
+		MAC to;
+		unsigned int len;
+		char data[4096];
+	};
+
+public:
+	TestEthernetTap(
+		TestEthernetTapFactory *parent,
+		const MAC &mac,
+		unsigned int mtu,
+		unsigned int metric,
+		uint64_t nwid,
+		const char *desiredDevice,
+		const char *friendlyName,
+		void (*handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &),
+		void *arg);
+
+	virtual ~TestEthernetTap();
+
+	virtual void setEnabled(bool en);
+	virtual bool enabled() const;
+	virtual bool addIP(const InetAddress &ip);
+	virtual bool removeIP(const InetAddress &ip);
+	virtual std::set<InetAddress> ips() const;
+	virtual void put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len);
+	virtual std::string deviceName() const;
+	virtual void setFriendlyName(const char *friendlyName);
+	virtual bool updateMulticastGroups(std::set<MulticastGroup> &groups);
+
+	void threadMain()
+		throw();
+
+	inline void sendFromHost(const MAC &from,const MAC &to,const void *data,unsigned int len)
+	{
+		if (!len)
+			return;
+		{
+			Mutex::Lock _l(_pq_m);
+			_pq.push(TestFrame(from,to,data,len));
+		}
+		_pq_c.signal();
+	}
+
+private:
+	TestEthernetTapFactory *_parent;
+
+	void (*_handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &);
+	void *_arg;
+	Thread _thread;
+	std::string _dev;
+	volatile bool _enabled;
+
+	std::queue< TestFrame > _pq;
+	Mutex _pq_m;
+	Condition _pq_c;
+
+	AtomicCounter __refCount;
+};
+
+} // namespace ZeroTier
+
+#endif