Better encode/decode code for control bus.

node/Node.hpp

@@ -40,6 +40,45 @@ namespace ZeroTier {
 class Node
 {
 public:
+	/**
+	 * Client for controlling a local ZeroTier One node
+	 */
+	class LocalClient
+	{
+	public:
+		/**
+		 * Create a new node config client
+		 *
+		 * The result handler will be called from a different thread. Its
+		 * arguments are the request ID generated by send() and each line
+		 * of output. It may be called more than once per request result
+		 * if the command generates more than one line of output.
+		 *
+		 * @param authToken Authentication token
+		 * @param resultHandler Function to call when commands provide results
+		 */
+		LocalClient(const char *authToken,void (*resultHandler)(void *,unsigned long,const char *),void *arg)
+			throw();
+
+		~LocalClient();
+
+		/**
+		 * Send a command to the local node
+		 *
+		 * @param command
+		 * @return Request ID that will be provided to result handler when/if results are sent back
+		 */
+		unsigned long send(const char *command)
+			throw();
+
+	private:
+		// LocalClient is not copyable
+		LocalClient(const LocalClient&);
+		const LocalClient& operator=(const LocalClient&);
+
+		void *_impl;
+	};
+
 	/**
 	 * Returned by node main if/when it terminates
 	 */
@@ -108,6 +147,10 @@ public:
 	static unsigned int versionRevision() throw();
 
 private:
+	// Nodes are not copyable
+	Node(const Node&);
+	const Node& operator=(const Node&);
+
 	void *const _impl; // private implementation
 };