426 lines
12 KiB
C#
426 lines
12 KiB
C#
//
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// System.Net.NetworkInformation.IPGlobalProperties
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//
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// Authors:
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// Gonzalo Paniagua Javier (gonzalo@novell.com)
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// Atsushi Enomoto (atsushi@ximian.com)
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// Marek Safar (marek.safar@gmail.com)
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//
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// Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Collections.Generic;
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using System.Collections.Specialized;
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using System.Globalization;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace System.Net.NetworkInformation {
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abstract class CommonUnixIPGlobalProperties : IPGlobalProperties
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{
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[DllImport ("libc")]
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static extern int gethostname ([MarshalAs (UnmanagedType.LPArray, SizeParamIndex = 1)] byte [] name, int len);
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#if !ORBIS
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[DllImport ("libc")]
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static extern int getdomainname ([MarshalAs (UnmanagedType.LPArray, SizeParamIndex = 1)] byte [] name, int len);
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#else
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static int getdomainname ([MarshalAs (UnmanagedType.LPArray, SizeParamIndex = 1)] byte [] name, int len)
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{
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throw new PlatformNotSupportedException ();
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}
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#endif
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public override string DhcpScopeName {
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get { return String.Empty; }
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}
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public override string DomainName {
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get {
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byte [] bytes = new byte [256];
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if (getdomainname (bytes, 256) != 0)
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throw new NetworkInformationException ();
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int len = Array.IndexOf<byte> (bytes, 0);
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return Encoding.ASCII.GetString (bytes, 0, len < 0 ? 256 : len);
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}
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}
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public override string HostName {
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get {
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byte [] bytes = new byte [256];
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if (gethostname (bytes, 256) != 0)
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throw new NetworkInformationException ();
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int len = Array.IndexOf<byte> (bytes, 0);
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return Encoding.ASCII.GetString (bytes, 0, len < 0 ? 256 : len);
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}
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}
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public override bool IsWinsProxy {
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get { return false; } // no WINS
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}
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public override NetBiosNodeType NodeType {
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get { return NetBiosNodeType.Unknown; } // no NetBios
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}
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}
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class UnixIPGlobalProperties : CommonUnixIPGlobalProperties
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{
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public override TcpConnectionInformation [] GetActiveTcpConnections ()
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{
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throw new NotImplementedException ();
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}
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public override IPEndPoint [] GetActiveTcpListeners ()
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{
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throw new NotImplementedException ();
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}
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public override IPEndPoint [] GetActiveUdpListeners ()
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{
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throw new NotImplementedException ();
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}
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public override IcmpV4Statistics GetIcmpV4Statistics ()
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{
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throw new NotImplementedException ();
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}
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public override IcmpV6Statistics GetIcmpV6Statistics ()
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{
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throw new NotImplementedException ();
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}
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public override IPGlobalStatistics GetIPv4GlobalStatistics ()
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{
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throw new NotImplementedException ();
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}
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public override IPGlobalStatistics GetIPv6GlobalStatistics ()
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{
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throw new NotImplementedException ();
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}
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public override TcpStatistics GetTcpIPv4Statistics ()
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{
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throw new NotImplementedException ();
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}
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public override TcpStatistics GetTcpIPv6Statistics ()
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{
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throw new NotImplementedException ();
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}
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public override UdpStatistics GetUdpIPv4Statistics ()
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{
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throw new NotImplementedException ();
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}
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public override UdpStatistics GetUdpIPv6Statistics ()
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{
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throw new NotImplementedException ();
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}
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}
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#if MONODROID
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sealed class AndroidIPGlobalProperties : UnixIPGlobalProperties
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{
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public override string DomainName {
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get {
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return String.Empty;
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}
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}
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}
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#endif
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// It expects /proc/net/snmp (or /usr/compat/linux/proc/net/snmp),
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// formatted like:
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// http://www.linuxdevcenter.com/linux/2000/11/16/example5.html
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// http://www.linuxdevcenter.com/linux/2000/11/16/example2.html
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class MibIPGlobalProperties : UnixIPGlobalProperties
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{
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public const string ProcDir = "/proc";
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public const string CompatProcDir = "/usr/compat/linux/proc";
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public readonly string StatisticsFile, StatisticsFileIPv6, TcpFile, Tcp6File, UdpFile, Udp6File;
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public MibIPGlobalProperties (string procDir)
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{
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StatisticsFile = Path.Combine (procDir, "net/snmp");
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StatisticsFileIPv6 = Path.Combine (procDir, "net/snmp6");
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TcpFile = Path.Combine (procDir,"net/tcp");
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Tcp6File = Path.Combine (procDir,"net/tcp6");
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UdpFile = Path.Combine (procDir,"net/udp");
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Udp6File = Path.Combine (procDir,"net/udp6");
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}
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StringDictionary GetProperties4 (string item)
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{
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string file = StatisticsFile;
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string head = item + ": ";
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using (StreamReader sr = new StreamReader (file, Encoding.ASCII)) {
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string [] keys = null;
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string [] values = null;
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string s = String.Empty;
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do {
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s = sr.ReadLine ();
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if (String.IsNullOrEmpty (s))
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continue;
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if (s.Length <= head.Length || String.CompareOrdinal (s, 0, head, 0, head.Length) != 0)
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continue;
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if (keys == null)
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keys = s.Substring (head.Length).Split (' ');
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else if (values != null)
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// hmm, there may be better error type...
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throw CreateException (file, String.Format ("Found duplicate line for values for the same item '{0}'", item));
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else {
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values = s.Substring (head.Length).Split (' ');
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break;
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}
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} while (!sr.EndOfStream);
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if (values == null)
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throw CreateException (file, String.Format ("No corresponding line was not found for '{0}'", item));
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if (keys.Length != values.Length)
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throw CreateException (file, String.Format ("The counts in the header line and the value line do not match for '{0}'", item));
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StringDictionary dic = new StringDictionary ();
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for (int i = 0; i < keys.Length; i++)
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dic [keys [i]] = values [i];
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return dic;
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}
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}
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StringDictionary GetProperties6 (string item)
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{
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if (!File.Exists (StatisticsFileIPv6))
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throw new NetworkInformationException ();
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string file = StatisticsFileIPv6;
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string head = item;
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using (StreamReader sr = new StreamReader (file, Encoding.ASCII)) {
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StringDictionary dic = new StringDictionary ();
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string s = String.Empty;
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do {
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s = sr.ReadLine ();
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if (String.IsNullOrEmpty (s))
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continue;
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if (s.Length <= head.Length || String.CompareOrdinal (s, 0, head, 0, head.Length) != 0)
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continue;
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int idx = s.IndexOfAny (wsChars, head.Length);
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if (idx < 0)
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throw CreateException (file, null);
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dic [s.Substring (head.Length, idx - head.Length)] = s.Substring (idx + 1).Trim (wsChars);
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} while (!sr.EndOfStream);
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return dic;
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}
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}
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static readonly char [] wsChars = new char [] {' ', '\t'};
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Exception CreateException (string file, string msg)
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{
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return new InvalidOperationException (String.Format ("Unsupported (unexpected) '{0}' file format. ", file) + msg);
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}
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IPEndPoint [] GetLocalAddresses (List<string []> list)
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{
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IPEndPoint [] ret = new IPEndPoint [list.Count];
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for (int i = 0; i < ret.Length; i++)
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ret [i] = ToEndpoint (list [i] [1]);
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return ret;
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}
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IPEndPoint ToEndpoint (string s)
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{
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int idx = s.IndexOf (':');
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int port = int.Parse (s.Substring (idx + 1), NumberStyles.HexNumber);
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if (s.Length == 13)
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return new IPEndPoint (long.Parse (s.Substring (0, idx), NumberStyles.HexNumber), port);
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else {
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byte [] bytes = new byte [16];
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for (int i = 0; (i << 1) < idx; i++)
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bytes [i] = byte.Parse (s.Substring (i << 1, 2), NumberStyles.HexNumber);
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return new IPEndPoint (new IPAddress (bytes), port);
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}
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}
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void GetRows (string file, List<string []> list)
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{
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if (!File.Exists (file))
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return;
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using (StreamReader sr = new StreamReader (file, Encoding.ASCII)) {
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sr.ReadLine (); // skip first line
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while (!sr.EndOfStream) {
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string [] item = sr.ReadLine ().Split (wsChars, StringSplitOptions.RemoveEmptyEntries);
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if (item.Length < 4)
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throw CreateException (file, null);
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list.Add (item);
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}
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}
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}
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static TcpState UnixTcpStateToTcpState (int unixState)
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{
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//The values of these states in Linux are listed here:
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//https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/net/tcp_states.h?id=HEAD
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switch (unixState) {
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case 1:
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return TcpState.Established;
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case 2:
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return TcpState.SynSent;
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case 3:
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return TcpState.SynReceived;
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case 4:
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return TcpState.FinWait1;
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case 5:
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return TcpState.FinWait2;
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case 6:
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return TcpState.TimeWait;
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case 7:
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return TcpState.Closed;
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case 8:
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return TcpState.CloseWait;
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case 9:
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return TcpState.LastAck;
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case 10:
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return TcpState.Listen;
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case 11:
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return TcpState.Closing;
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default:
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return TcpState.Unknown;
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}
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}
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public override TcpConnectionInformation [] GetActiveTcpConnections ()
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{
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List<string []> list = new List<string []> ();
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GetRows (TcpFile, list);
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GetRows (Tcp6File, list);
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TcpConnectionInformation [] ret = new TcpConnectionInformation [list.Count];
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for (int i = 0; i < ret.Length; i++) {
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// sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode
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IPEndPoint local = ToEndpoint (list [i] [1]);
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IPEndPoint remote = ToEndpoint (list [i] [2]);
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TcpState state = UnixTcpStateToTcpState (int.Parse (list [i] [3], NumberStyles.HexNumber));
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ret [i] = new SystemTcpConnectionInformation (local, remote, state);
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}
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return ret;
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}
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public override IPEndPoint [] GetActiveTcpListeners ()
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{
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List<string []> list = new List<string []> ();
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GetRows (TcpFile, list);
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GetRows (Tcp6File, list);
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return GetLocalAddresses (list);
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}
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public override IPEndPoint [] GetActiveUdpListeners ()
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{
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List<string []> list = new List<string []> ();
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GetRows (UdpFile, list);
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GetRows (Udp6File, list);
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return GetLocalAddresses (list);
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}
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public override IcmpV4Statistics GetIcmpV4Statistics ()
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{
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return new MibIcmpV4Statistics (GetProperties4 ("Icmp"));
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}
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public override IcmpV6Statistics GetIcmpV6Statistics ()
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{
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return new MibIcmpV6Statistics (GetProperties6 ("Icmp6"));
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}
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public override IPGlobalStatistics GetIPv4GlobalStatistics ()
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{
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return new MibIPGlobalStatistics (GetProperties4 ("Ip"));
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}
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public override IPGlobalStatistics GetIPv6GlobalStatistics ()
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{
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return new MibIPGlobalStatistics (GetProperties6 ("Ip6"));
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}
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public override TcpStatistics GetTcpIPv4Statistics ()
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{
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return new MibTcpStatistics (GetProperties4 ("Tcp"));
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}
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public override TcpStatistics GetTcpIPv6Statistics ()
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{
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// There is no TCP info in /proc/net/snmp,
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// so it is shared with IPv4 info.
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return new MibTcpStatistics (GetProperties4 ("Tcp"));
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}
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public override UdpStatistics GetUdpIPv4Statistics ()
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{
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return new MibUdpStatistics (GetProperties4 ("Udp"));
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}
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public override UdpStatistics GetUdpIPv6Statistics ()
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{
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return new MibUdpStatistics (GetProperties6 ("Udp6"));
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}
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}
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internal static class UnixIPGlobalPropertiesFactoryPal {
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public static IPGlobalProperties Create ()
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{
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#if MONODROID
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return new AndroidIPGlobalProperties ();
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#elif MONOTOUCH || XAMMAC
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return new UnixIPGlobalProperties ();
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#elif MONO
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switch (Environment.OSVersion.Platform) {
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case PlatformID.Unix:
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MibIPGlobalProperties impl = null;
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if (Directory.Exists (MibIPGlobalProperties.ProcDir)) {
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impl = new MibIPGlobalProperties (MibIPGlobalProperties.ProcDir);
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if (File.Exists (impl.StatisticsFile))
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return impl;
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}
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if (Directory.Exists (MibIPGlobalProperties.CompatProcDir)) {
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impl = new MibIPGlobalProperties (MibIPGlobalProperties.CompatProcDir);
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if (File.Exists (impl.StatisticsFile))
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return impl;
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}
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return new UnixIPGlobalProperties ();
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default:
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#if !WIN_PLATFORM
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return new UnixIPGlobalProperties ();
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#endif
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return null;
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}
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#else
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(new NetworkInformationPermission (NetworkInformationAccess.Read)).Demand ();
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return new SystemIPGlobalProperties ();
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#endif
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}
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}
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}
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