Introduction of sequential-API build variant, better thread safety (lwIP only)

2017-09-27 02:29:04 -07:00
parent e4620e4c85
commit 5f1e9fe795
176 changed files with 16494 additions and 20406 deletions
--- a/src/VirtualSocket.cpp
+++ b/src/VirtualSocket.cpp
@@ -0,0 +1,119 @@
+/*
+ * ZeroTier SDK - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  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/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
+ */
+
+/**
+ * @file
+ *
+ * Platform-agnostic implementation of a socket-like object
+ */
+
+#ifndef ZT_VIRTUALSOCKET_HPP
+#define ZT_VIRTUALSOCKET_HPP
+
+#include <ctime>
+#include <sys/socket.h>
+
+#include "VirtualSocket.h"
+#include "VirtualBindingPair.h"
+#include "RingBuffer.hpp"
+
+#define VS_STATE_INACTIVE             0x000000u // Default value for newly created VirtualSocket
+#define VS_STATE_ACTIVE               0x000001u // VirtualSocket is RX'ing or TX'ing without issue 
+#define VS_STATE_SHOULD_SHUTDOWN      0x000002u // Application, stack driver, or stack marked this VirtualSocket for death
+#define VS_STATE_SHUTDOWN             0x000004u // VirtualSocket and underlying protocol control structures will not RX/TX
+#define VS_STATE_CLOSED               0x000008u // VirtualSocket and underlying protocol control structures are closed
+#define VS_STATE_UNHANDLED_CONNECTED  0x000010u // stack callback has received a connection but we haven't dealt with it
+#define VS_STATE_CONNECTED            0x000020u // stack driver has akwnowledged new connection
+#define VS_STATE_LISTENING            0x000040u // virtual socket is listening for incoming connections
+
+#define VS_OPT_TCP_NODELAY            0x000000u // Nagle's algorithm
+#define VS_OPT_SO_LINGER              0x000001u // VirtualSocket waits for data transmission before closure
+/*
+#define VS_RESERVED                   0x000002u // 
+#define VS_RESERVED                   0x000004u //
+#define VS_RESERVED                   0x000008u // 
+#define VS_RESERVED                   0x000010u // 
+#define VS_RESERVED                   0x000020u //
+#define VS_RESERVED                   0x000040u //
+*/
+#define VS_OPT_FD_NONBLOCKING         0x000080u // Whether the VirtualSocket exhibits non-blocking behaviour
+/*
+#define VS_RESERVED                   0x000100u //
+#define VS_RESERVED                   0x000200u //
+#define VS_RESERVED                   0x000400u //
+#define VS_RESERVED                   0x000800u //
+#define VS_RESERVED                   0x001000u //
+#define VS_RESERVED                   0x002000u //
+#define VS_RESERVED                   0x004000u //
+#define VS_RESERVED                   0x008000u //
+#define VS_RESERVED                   0x010000u //
+#define VS_RESERVED                   0x020000u //
+#define VS_RESERVED                   0x040000u //
+#define VS_RESERVED                   0x080000u //
+#define VS_RESERVED                   0x100000u //
+#define VS_RESERVED                   0x200000u //
+#define VS_RESERVED                   0x400000u // 
+#define VS_RESERVED                   0x800000u // 
+*/
+
+#define vs_is_nonblocking(vs)  (((vs)->optflags & VS_OPT_FD_NONBLOCKING) != 0)
+
+namespace ZeroTier {
+
+	class VirtualTap;
+
+	class VirtualSocket
+	{
+	private:
+		int _state = VS_STATE_INACTIVE;
+	public:
+
+		/**
+		 * Sets the VirtualSocket's state value
+		 */
+		void apply_state(int state) {
+			_state &= state; 
+		}
+		/**
+		 * Sets the VirtualSocket's state value
+		 */
+		void set_state(int state) {
+			_state = state; 
+		}
+		/**
+		 * Gets the VirtualSocket's state value
+		 */
+		int get_state() {
+			return _state; 
+		}
+
+		VirtualSocket() {
+		}
+		~VirtualSocket() {
+		}
+	};
+}
+#endif