Imported Upstream version 5.18.0.142

Former-commit-id: 7467d4b717762eeaf652d77f1486dd11ffb1ff1f

mcs/class/System/System.Net.NetworkInformation/LinuxIPInterfaceProperties.cs

@@ -0,0 +1,89 @@
+//
+// System.Net.NetworkInformation.IPInterfaceProperties
+//
+// Authors:
+//	Gonzalo Paniagua Javier (gonzalo@novell.com)
+//	Atsushi Enomoto (atsushi@ximian.com)
+//
+// Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+
+namespace System.Net.NetworkInformation {
+	class LinuxIPInterfaceProperties : UnixIPInterfaceProperties
+	{
+		public LinuxIPInterfaceProperties (LinuxNetworkInterface iface, List <IPAddress> addresses)
+			: base (iface, addresses)
+		{
+		}
+
+		public override IPv4InterfaceProperties GetIPv4Properties ()
+		{
+			if (ipv4iface_properties == null)
+				ipv4iface_properties = new LinuxIPv4InterfaceProperties (iface as LinuxNetworkInterface);
+
+			return ipv4iface_properties;
+		}
+
+		IPAddressCollection ParseRouteInfo (string iface)
+		{
+			var col = new IPAddressCollection ();
+			try {
+				using (StreamReader reader = new StreamReader ("/proc/net/route")) {
+					string line;
+					reader.ReadLine (); // Ignore first line
+					while ((line = reader.ReadLine ()) != null) {
+						line = line.Trim ();
+						if (line.Length == 0)
+							continue;
+
+						string [] parts = line.Split ('\t');
+						if (parts.Length < 3)
+							continue;
+						string gw_address = parts [2].Trim ();
+						byte [] ipbytes = new byte [4];
+						if (gw_address.Length == 8 && iface.Equals (parts [0], StringComparison.OrdinalIgnoreCase)) {
+							for (int i = 0; i < 4; i++) {
+								if (!Byte.TryParse (gw_address.Substring (i * 2, 2), NumberStyles.HexNumber, null, out ipbytes [3 - i]))
+									continue;
+							}
+							IPAddress ip = new IPAddress (ipbytes);
+							if (!ip.Equals (IPAddress.Any) && !col.Contains (ip))
+								col.InternalAdd (ip);
+						}
+					}
+				}
+			} catch {
+			}
+
+			return col;
+		}
+
+		public override GatewayIPAddressInformationCollection GatewayAddresses {
+			get {
+				return SystemGatewayIPAddressInformation.ToGatewayIpAddressInformationCollection (ParseRouteInfo (this.iface.Name.ToString()));
+			}
+		}
+	}
+}