Split EthernetTap into subclasses, work in progress...

1 files changed, 105 insertions, 0 deletions

diff --git a/node/UnixEthernetTap.hpp b/node/UnixEthernetTap.hpp
new file mode 100644
index 00000000..2d19b19f
--- /dev/null
+++ b/node/UnixEthernetTap.hpp
@@ -0,0 +1,105 @@
+/*
+ * 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_UNIXETHERNETTAP_HPP
+#define ZT_UNIXETHERNETTAP_HPP
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <stdexcept>
+
+#include "EthernetTap.hpp"
+#include "Mutex.hpp"
+#include "Thread.hpp"
+
+namespace ZeroTier {
+
+class RuntimeEnvironment;
+
+/**
+ * Tap device using Unix taps (contains special case code for Linux, OSX, etc. but they're all similar)
+ */
+class UnixEthernetTap : public EthernetTap
+{
+public:
+	/**
+	 * Construct a new TAP device
+	 *
+	 * Handler arguments: arg,from,to,etherType,data
+	 * 
+	 * @param renv Runtime environment
+	 * @param tryToGetDevice Unix device name (e.g. zt0)
+	 * @param mac MAC address of device
+	 * @param mtu MTU of device
+	 * @param desc If non-NULL, a description (not used on all OSes)
+	 * @param handler Handler function to be called when data is received from the tap
+	 * @param arg First argument to handler function
+	 * @throws std::runtime_error Unable to allocate tap device
+	 */
+	UnixEthernetTap(
+		const RuntimeEnvironment *renv,
+		const char *tryToGetDevice,
+		const MAC &mac,
+		unsigned int mtu,
+		void (*handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &),
+		void *arg)
+		throw(std::runtime_error);
+
+	virtual ~UnixEthernetTap();
+
+	virtual void setEnabled(bool en);
+	virtual bool enabled() const;
+	virtual void setDisplayName(const char *dn);
+	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 std::string persistentId() const;
+	virtual bool updateMulticastGroups(std::set<MulticastGroup> &groups);
+
+	/**
+	 * Thread main method; do not call elsewhere
+	 */
+	void threadMain()
+		throw();
+
+private:
+	const RuntimeEnvironment *_r;
+	void (*_handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &);
+	void *_arg;
+	Thread _thread;
+	std::string _dev;
+	int _fd;
+	int _shutdownSignalPipe[2];
+	volatile bool _enabled;
+};
+
+} // namespace ZeroTier
+
+#endif