From 478be44dd6deff328cca51306585779bfba7c535 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Sat, 5 Oct 2013 13:13:32 -0400
Subject: create platform-specific network manager implementation

---
 .../Networking/BaseNetworkManager.cs               | 163 +++++++++++++++++++++
 1 file changed, 163 insertions(+)
 create mode 100644 MediaBrowser.Common.Implementations/Networking/BaseNetworkManager.cs

(limited to 'MediaBrowser.Common.Implementations/Networking/BaseNetworkManager.cs')

diff --git a/MediaBrowser.Common.Implementations/Networking/BaseNetworkManager.cs b/MediaBrowser.Common.Implementations/Networking/BaseNetworkManager.cs
new file mode 100644
index 0000000000..ac6b9290ef
--- /dev/null
+++ b/MediaBrowser.Common.Implementations/Networking/BaseNetworkManager.cs
@@ -0,0 +1,163 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Net;
+using System.Net.NetworkInformation;
+using System.Net.Sockets;
+
+namespace MediaBrowser.Common.Implementations.Networking
+{
+    public abstract class BaseNetworkManager
+    {
+        /// <summary>
+        /// Gets the machine's local ip address
+        /// </summary>
+        /// <returns>IPAddress.</returns>
+        public IEnumerable<string> GetLocalIpAddresses()
+        {
+            var host = Dns.GetHostEntry(Dns.GetHostName());
+
+            // Reverse them because the last one is usually the correct one
+            // It's not fool-proof so ultimately the consumer will have to examine them and decide
+            return host.AddressList
+                .Where(i => i.AddressFamily == AddressFamily.InterNetwork)
+                .Select(i => i.ToString())
+                .Reverse();
+        }
+
+        /// <summary>
+        /// Gets a random port number that is currently available
+        /// </summary>
+        /// <returns>System.Int32.</returns>
+        public int GetRandomUnusedPort()
+        {
+            var listener = new TcpListener(IPAddress.Any, 0);
+            listener.Start();
+            var port = ((IPEndPoint)listener.LocalEndpoint).Port;
+            listener.Stop();
+            return port;
+        }
+
+        /// <summary>
+        /// Returns MAC Address from first Network Card in Computer
+        /// </summary>
+        /// <returns>[string] MAC Address</returns>
+        public string GetMacAddress()
+        {
+            return NetworkInterface.GetAllNetworkInterfaces()
+                .Where(i => i.NetworkInterfaceType != NetworkInterfaceType.Loopback)
+                .Select(i => BitConverter.ToString(i.GetPhysicalAddress().GetAddressBytes()))
+                .FirstOrDefault();
+        }
+        /// <summary>
+        /// Parses the specified endpointstring.
+        /// </summary>
+        /// <param name="endpointstring">The endpointstring.</param>
+        /// <returns>IPEndPoint.</returns>
+        public IPEndPoint Parse(string endpointstring)
+        {
+            return Parse(endpointstring, -1);
+        }
+
+        /// <summary>
+        /// Parses the specified endpointstring.
+        /// </summary>
+        /// <param name="endpointstring">The endpointstring.</param>
+        /// <param name="defaultport">The defaultport.</param>
+        /// <returns>IPEndPoint.</returns>
+        /// <exception cref="System.ArgumentException">Endpoint descriptor may not be empty.</exception>
+        /// <exception cref="System.FormatException"></exception>
+        private static IPEndPoint Parse(string endpointstring, int defaultport)
+        {
+            if (String.IsNullOrEmpty(endpointstring)
+                || endpointstring.Trim().Length == 0)
+            {
+                throw new ArgumentException("Endpoint descriptor may not be empty.");
+            }
+
+            if (defaultport != -1 &&
+                (defaultport < IPEndPoint.MinPort
+                || defaultport > IPEndPoint.MaxPort))
+            {
+                throw new ArgumentException(String.Format("Invalid default port '{0}'", defaultport));
+            }
+
+            string[] values = endpointstring.Split(new char[] { ':' });
+            IPAddress ipaddy;
+            int port = -1;
+
+            //check if we have an IPv6 or ports
+            if (values.Length <= 2) // ipv4 or hostname
+            {
+                port = values.Length == 1 ? defaultport : GetPort(values[1]);
+
+                //try to use the address as IPv4, otherwise get hostname
+                if (!IPAddress.TryParse(values[0], out ipaddy))
+                    ipaddy = GetIPfromHost(values[0]);
+            }
+            else if (values.Length > 2) //ipv6
+            {
+                //could [a:b:c]:d
+                if (values[0].StartsWith("[") && values[values.Length - 2].EndsWith("]"))
+                {
+                    string ipaddressstring = String.Join(":", values.Take(values.Length - 1).ToArray());
+                    ipaddy = IPAddress.Parse(ipaddressstring);
+                    port = GetPort(values[values.Length - 1]);
+                }
+                else //[a:b:c] or a:b:c
+                {
+                    ipaddy = IPAddress.Parse(endpointstring);
+                    port = defaultport;
+                }
+            }
+            else
+            {
+                throw new FormatException(String.Format("Invalid endpoint ipaddress '{0}'", endpointstring));
+            }
+
+            if (port == -1)
+                throw new ArgumentException(String.Format("No port specified: '{0}'", endpointstring));
+
+            return new IPEndPoint(ipaddy, port);
+        }
+
+        protected static readonly CultureInfo UsCulture = new CultureInfo("en-US");
+
+        /// <summary>
+        /// Gets the port.
+        /// </summary>
+        /// <param name="p">The p.</param>
+        /// <returns>System.Int32.</returns>
+        /// <exception cref="System.FormatException"></exception>
+        private static int GetPort(string p)
+        {
+            int port;
+
+            if (!Int32.TryParse(p, out port)
+             || port < IPEndPoint.MinPort
+             || port > IPEndPoint.MaxPort)
+            {
+                throw new FormatException(String.Format("Invalid end point port '{0}'", p));
+            }
+
+            return port;
+        }
+
+        /// <summary>
+        /// Gets the I pfrom host.
+        /// </summary>
+        /// <param name="p">The p.</param>
+        /// <returns>IPAddress.</returns>
+        /// <exception cref="System.ArgumentException"></exception>
+        private static IPAddress GetIPfromHost(string p)
+        {
+            var hosts = Dns.GetHostAddresses(p);
+
+            if (hosts == null || hosts.Length == 0)
+                throw new ArgumentException(String.Format("Host not found: {0}", p));
+
+            return hosts[0];
+        }
+    }
+}
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