Attachment 148734 Details for Bug 194660 – Use netstat to get routes if no /proc/net/route

[patch] Use netstat to get routes if no /proc/net/route

patch-mcs__class__System__System.Net.NetworkInformation__IPInterfaceProperties.cs (text/plain), 3.53 KB, created by Ben Woods on 2014-10-28 13:48:13 UTC

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Creator: Ben Woods

Created: 2014-10-28 13:48:13 UTC

Size: 3.53 KB

patch

obsolete

>--- mcs/class/System/System.Net.NetworkInformation/IPInterfaceProperties.cs.orig	2014-09-25 21:31:42.717533580 +0800
>+++ mcs/class/System/System.Net.NetworkInformation/IPInterfaceProperties.cs	2014-09-25 21:49:47.154529125 +0800
>@@ -27,6 +27,7 @@
> // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
> //
> using System.Collections.Generic;
>+using System.Diagnostics;
> using System.Globalization;
> using System.IO;
> using System.Net.Sockets;
>@@ -77,29 +78,67 @@
> 		void ParseRouteInfo (string iface)
> 		{
> 			try {
>-				gateways = new IPAddressCollection ();
>-				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))
>-								gateways.Add (ip);
>-						}
>+				if (File.Exists ("/proc/net/route")) {
>+					gateways = new IPAddressCollection ();
>+					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))
>+									gateways.Add (ip);
>+							}
>+						}
>+					}
>+				} else {
>+					ProcessStartInfo ps = new ProcessStartInfo ("netstat", "-rnW");
>+					ps.UseShellExecute = false;
>+					ps.RedirectStandardOutput = true;
>+					using (Process p = Process.Start (ps)) {
>+						string line;
>+						int iface_part = 0;
>+						int gw_part = 0;
>+						while ((line = p.StandardOutput.ReadLine ()) != null) {
>+							line = line.Trim ();
>+							if (line.Length == 0)
>+								continue;
>+
>+							string [] parts = line.Split (new char[0], StringSplitOptions.RemoveEmptyEntries);
>+							if (parts.Length < 6)
>+								continue;
>+
>+							if (iface_part == gw_part) {
>+								for (int i = 0; i < parts.Length; i++) {
>+									if (parts[i].Equals ("gateway", StringComparison.OrdinalIgnoreCase))
>+										gw_part = i;
>+									if (parts[i].Equals ("netif", StringComparison.OrdinalIgnoreCase))
>+										iface_part = i;
>+								}
>+							}
>+
>+							if (iface.Equals (parts [iface_part], StringComparison.OrdinalIgnoreCase)) {
>+								IPAddress ip;
>+								if (IPAddress.TryParse (parts [gw_part], out ip)) {
>+									if (!ip.Equals (IPAddress.Any))
>+										gateways.Add (ip);
>+								}
>+							}
>+						}
>+						p.WaitForExit ();
> 					}
> 				}
> 			} catch {

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Attachments on bug 194660: 148734 | 149029 | 149451 | 149452 | 149739 | 150260